CAPROCK COMMUNICATIONS CORP
S-4, 1998-06-22
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<PAGE>
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 22, 1998
                                                   REGISTRATION NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549
                         ------------------------------
                                    FORM S-4
 
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                         ------------------------------
                          CAPROCK COMMUNICATIONS CORP.
 
             (Exact Name of Registrant as Specified in Its Charter)
 
<TABLE>
<S>                              <C>                            <C>
            TEXAS                            1731                  75-2765572
 (State or Other Jurisdiction    (Primary Standard Industrial   (I.R.S. Employer
              of                    Classification Number)       Identification
Incorporation or Organization)                                      Number)
</TABLE>
 
                         TWO GALLERIA TOWER, SUITE 1925
                                13455 NOEL ROAD
                             DALLAS, TX 75240-6638
                                 (972) 982-9500
 
         (Address, Including Zip Code, and Telephone Number, Including
            Area Code, of Registrant's Principal Executive Offices)
                         ------------------------------
                           MR. JERE W. THOMPSON, JR.
                            CHIEF EXECUTIVE OFFICER
                          CAPROCK COMMUNICATIONS CORP.
                         TWO GALLERIA TOWER, SUITE 1925
                                13455 NOEL ROAD
                             DALLAS, TX 75240-6638
                                 (972) 982-9500
 
           (Name, Address, Including Zip Code, and Telephone Number,
                   Including Area Code, of Agent For Service)
                         ------------------------------
                                   COPIES TO:
 
<TABLE>
<S>                              <C>                            <C>
A. MICHAEL HAINSFURTHER, ESQ.      MR. IGNATIUS W. LEONARDS        DUDLEY W.
  MARK A. KOPIDLANSKY, ESQ.               PRESIDENT               MURREY, ESQ.
   MUNSCH HARDT KOPF HARR &      CAPROCK COMMUNICATIONS CORP.    HUGHES & LUCE,
         DINAN, P.C.               12000 AEROSPACE AVENUE,           L.L.P.
  1445 ROSS AVE., SUITE 4000              SUITE 200                1717 MAIN
    DALLAS, TX 75202-2790             HOUSTON, TX 77034          STREET, SUITE
        (214) 855-7500                  (281) 482-0289                2800
                                                                DALLAS, TX 75201
                                                                 (214) 939-5500
</TABLE>
 
    Approximate date of commencement of proposed sale to the public: As soon as
practicable after the effectiveness of this Registration Statement and the
effective time ("Effective Time") of the merger of one subsidiary of CapRock
Communications Corp. ("Holdings") with and into IWL Communications, Incorporated
("IWL"), the consummation of the exchange (the "Interest Exchange") of Holdings
common stock for all of the partnership interests of CapRock Fiber Network, Ltd.
(the "Partnership") that are validly tendered to and accepted by Holdings, and
the merger (such mergers collectively, the "Mergers") of another subsidiary of
Holdings with and into CapRock Telecommunications Corp. ("Telecommunications"),
all as described in the Agreement and Plan of Merger and Plan of Exchange dated
as of February 16, 1998, as amended (the Mergers and the Interest Exchange are
collectively referred to as the "Transaction").
 
    If the securities being registered on this form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box. / /
                         ------------------------------
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
                                                                   PROPOSED MAXIMUM    PROPOSED MAXIMUM       AMOUNT OF
           TITLE OF EACH CLASS OF                AMOUNT TO BE     OFFERING PRICE PER  AGGREGATE OFFERING   REGISTRATION FEE
        SECURITIES TO BE REGISTERED             REGISTERED (1)         UNIT (2)           PRICE (2)              (3)
<S>                                           <C>                 <C>                 <C>                 <C>
Common stock, par value $.01 per share......      29,738,607            $2.54           $75,667,054.05        $22,321.78
</TABLE>
 
(1) Consists of (i) up to 22,590,768 shares of Holdings common stock issuable
    upon the conversion, pursuant to the Mergers, of 3,986,718 currently
    outstanding shares of IWL common stock and 10,398,954 currently outstanding
    shares of Telecommunications common stock, (ii) up to 6,319,454 shares of
    Holdings common stock issuable upon exchange of partnership interests in the
    Partnership pursuant to the Interest Exchange, and (iii) up to 828,385
    shares of Holdings common stock issuable upon the exercise of 474,073 IWL
    options and warrants and 198,047 CapRock options that are outstanding and
    unexercised at the Effective Time and that, pursuant to the Mergers, will be
    assumed by Holdings and converted into options to purchase shares of
    Holdings common stock.
 
(2) Estimated pursuant to Rule 457(f)(1) and Rule 457(c) solely for purposes of
    calculating the amount of the registration fee, based upon the sum of (a)
    the product of (i) $16.25 (the average of the high of $16.50 and low of
    $16.00 prices per share of IWL common stock on the Nasdaq National Market on
    June 18, 1998) multiplied by (ii) 3,986,718 (the aggregate number of shares
    of IWL common stock outstanding), (b) the product of (i) $0.30 (the book
    value per share of Telecommunications common stock as of March 31, 1998, the
    latest practicable date prior to the filing) multiplied by (ii) 10,398,954
    (the aggregate number of shares of Telecommunications common stock
    outstanding), and (c) $100 (such amount represents a nominal value of all of
    the partnership interests in the Partnership as the book value of a
    partnership interest is a negative number and there is no par value or
    stated value of the partnership interests).
 
(3) Pursuant to Rule 457(b), includes the fee of $15,316.41 previously paid in
    connection with the filing with the Securities and Exchange Commission (the
    "Commission") of the preliminary proxy materials relating to the
    transactions described herein on May 1, 1998.
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933, AS AMENDED, OR UNTIL THE REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SUCH
SECTION 8(A), MAY DETERMINE.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                            [IWL PRESIDENT'S LETTER]
 
             , 1998
 
Dear Fellow Shareholder:
 
    You are cordially invited to attend a special meeting of the shareholders of
IWL Communications, Incorporated ("IWL") on          , 1998 (the "IWL Special
Meeting"), at which shareholders of IWL will be asked to approve the combination
of the businesses of IWL, CapRock Telecommunications Corp. (formerly known as
CapRock Communications Corp.) ("Telecommunications") and CapRock Fiber Network,
Ltd. (the "Partnership"). Upon the consummation of this business combination,
IWL and Telecommunications will become wholly owned subsidiaries of a newly
formed holding company, CapRock Communications Corp. (formerly known as IWL
Holdings Corp.) ("Holdings"), and Holdings will become a substitute limited
partner in the Partnership, with Telecommunications becoming a substitute
general partner in the Partnership. In addition, at the IWL Special Meeting, the
shareholders of IWL will be asked to approve the adoption of the CapRock
Communications Corp. 1998 Equity Incentive Plan (the "Equity Incentive Plan")
and the CapRock Communications Corp. 1998 Director Stock Option Plan (the
"Director Stock Option Plan").
 
    Upon the completion of the business combination:
 
    - each outstanding share of IWL common stock will be converted into one
      share of Holdings common stock;
 
    - each outstanding share of Telecommunications common stock will be
      converted into 1.789030878 shares of Holdings common stock; and
 
    - each one percent (1%) of the general and limited partnership interests in
      the Partnership that is validly tendered to and accepted by Holdings will
      be exchanged for 63,194.54 shares of Holdings common stock.
 
    The accompanying Joint Proxy Statement/Prospectus provides you with detailed
information concerning the IWL Special Meeting, the proposed business
combination and the Holdings common stock to be issued in connection with the
transaction, the Equity Incentive Plan, the Director Stock Option Plan and
certain other matters. Please read the accompanying Joint Proxy
Statement/Prospectus carefully and give this information your careful attention.
 
    Your Board of Directors (the "Board") has carefully reviewed and considered
the terms and conditions of the proposed business combination and believes that
the proposed business combination will provide opportunities to achieve
substantial benefits for IWL shareholders and customers through the more
efficient utilization of the combined assets, management and personnel of IWL,
Telecommunications and the Partnership. Your Board further believes that
Holdings will be better able to capitalize on growth opportunities in the
telecommunications industry, both domestically and internationally, and be
better positioned to compete effectively in the rapidly changing
telecommunications industry.
 
    Cruttenden Roth Incorporated, the Board's financial advisor in connection
with this transaction, has delivered a written opinion to the Board, a copy of
which is attached to the accompanying Joint Proxy Statement/Prospectus, to the
effect that, as of the date of such opinion and based on and subject to the
assumptions, limitations and qualifications set forth therein, from a financial
point of view, the relative exchange ratio of Holdings common stock to IWL
common stock is fair to the shareholders of IWL.
 
    Your Board, by unanimous vote, has determined that the terms and provisions
of the proposed business combination are fair to, and in the best interests of,
IWL and the shareholders of IWL, and recommends that you vote FOR the proposal
to approve the business combination.
 
    Your Board also has carefully reviewed and considered the Equity Incentive
Plan and the Director Stock Option Plan and unanimously recommends that you vote
FOR the proposals to approve each of these plans.
<PAGE>
    Please complete, sign and date the enclosed proxy card and return it in the
enclosed prepaid envelope as soon as possible. This action will not limit your
right to revoke your proxy by attending the IWL Special Meeting and voting in
person.
 
                                          Sincerely yours,
 
                                          Ignatius W. Leonards
 
                                          CHIEF EXECUTIVE OFFICER AND
 
                                          CHAIRMAN OF THE BOARD
<PAGE>
                        IWL COMMUNICATIONS, INCORPORATED
                             12000 Aerospace Avenue
                                   Suite 200
                              Houston, Texas 77034
                   NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                         TO BE HELD ON          , 1998
 
                                                                  Houston, Texas
 
                                                                          , 1998
 
    Notice is hereby given that a special meeting of the shareholders (the "IWL
Special Meeting") of IWL Communications, Incorporated ("IWL") will be held on
         , 1998 at 10:00 a.m. local time, at                         , for the
following purposes:
 
        1.  To consider and vote on a proposal to approve and adopt the
    Agreement and Plan of Merger and Plan of Exchange dated as of February 16,
    1998, as amended (as so amended, the "Merger Agreement"), among IWL, CapRock
    Communications Corp., a Texas corporation formerly known as IWL Holdings
    Corp. ("Holdings"), IWL Acquisition Corp., a Texas corporation ("I-Sub"),
    CapRock Telecommunications Corp., a Texas corporation formerly known as
    CapRock Communications Corp. ("Telecommunications"), CapRock Acquisition
    Corp., a Texas corporation ("C-Sub"), and CapRock Fiber Network, Ltd., a
    Texas limited partnership (the "Partnership"), pursuant to which (i) I-Sub,
    a newly formed subsidiary of Holdings, will be merged with and into IWL,
    (ii) the general partnership interest and all of the limited partnership
    interests in the Partnership that are validly tendered to and accepted by
    Holdings will be exchanged (the "Interest Exchange") for shares of Holdings
    common stock and (iii) C-Sub, a newly formed subsidiary of Holdings, will be
    merged with and into Telecommunications (the mergers described in (i) and
    (iii) are collectively referred to herein as the "Mergers"). As a result of
    the Mergers and the Interest Exchange, and assuming that the general
    Partnership Interest and at least 80% of the limited Partnership Interests
    are validly tendered and accepted, IWL and Telecommunications will become
    wholly owned subsidiaries of Holdings, Telecommunications will become a
    substitute general partner in the Partnership and Holdings will become a
    substitute limited partner in the Partnership. Upon the consummation of the
    Mergers, each outstanding share of IWL common stock will be converted into
    one share of Holdings common stock and each outstanding share of
    Telecommunications common stock will be converted into 1.789030878 shares of
    Holdings common stock. Upon consummation of the Interest Exchange, each one
    percent (1%) general or limited partnership interest in the Partnership that
    is validly tendered to and accepted by Holdings will be exchanged for
    63,194.54 shares of Holdings common stock.
 
        2.  To consider and vote on a proposal to approve the CapRock
    Communications Corp. 1998 Equity Incentive Plan (the "Equity Incentive
    Plan").
 
        3.  To consider and vote on a proposal to approve the CapRock
    Communications Corp. 1998 Director Stock Option Plan (the "Director Stock
    Option Plan").
 
        4.  To grant authorization to IWL to adjourn the IWL Special Meeting to
    solicit additional proxies.
 
        5.  To transact such other business as may properly come before the
    Special Meeting.
 
    Shareholders of record at the close of business on          , 1998 will be
entitled to receive notice of, and to vote at, the IWL Special Meeting. The
presence, in person or by proxy, of the holders of a majority of the outstanding
shares of IWL common stock entitled to vote is necessary to constitute a quorum
at the IWL Special Meeting. Under the Texas Business Corporation Act and
pursuant to IWL's Articles of Incorporation, as amended, the affirmative vote,
in person or by proxy, of the holders of a majority of the shares of IWL common
stock outstanding and entitled to vote at a meeting at which a quorum is
present, is required to approve and adopt the Merger Agreement. The affirmative
vote of a majority of the votes cast by the holders of IWL common stock, in
person or by proxy, at the IWL Special Meeting at which a quorum is present is
also required to approve all other action proposed, including the Equity
Incentive Plan and the Director Stock Option Plan, except that the affirmative
vote of the holders
<PAGE>
of a majority of the IWL common stock represented at the IWL Special Meeting and
entitled to vote thereon is required to approve the adjournment of the IWL
Special Meeting if no quorum is present.
 
    Please note that attendance at the IWL Special Meeting will be limited to
shareholders of IWL as of the record date (or their authorized representatives).
If your shares are held by a bank or broker, please bring to the IWL Special
Meeting evidence from your bank or broker of your beneficial ownership of IWL
common stock. A complete list of shareholders entitled to vote at the IWL
Special Meeting will be maintained in IWL's offices at 12000 Aerospace Avenue,
Suite 200, Houston, Texas 77034, for ten (10) days prior to the IWL Special
Meeting and will be open to the examination of any shareholder during ordinary
business hours of IWL.
 
    Please advise IWL's transfer agent, American Securities Transfer & Trust,
Inc., 1825 Lawrence Street, Suite 444, Denver, Colorado 80202, of any changes in
your address.
 
    WHETHER OR NOT YOU INTEND TO BE PRESENT AT THE IWL SPECIAL MEETING, PLEASE
PROMPTLY MARK, SIGN AND DATE THE ACCOMPANYING PROXY CARD AND RETURN IT IN THE
ENCLOSED ADDRESSED ENVELOPE. SHAREHOLDERS WHO DECIDE TO ATTEND THE IWL SPECIAL
MEETING MAY REVOKE THEIR PROXIES AT OR PRIOR TO THE IWL SPECIAL MEETING AND VOTE
IN PERSON EVEN IF THEY HAVE PREVIOUSLY RETURNED A PROXY.
 
                                          By Order of the Board of Directors,
 
                                          Richard H. Roberson
 
                                          SECRETARY
<PAGE>
                    [TELECOMMUNICATIONS PRESIDENT'S LETTER]
 
                   , 1998
 
Dear Fellow Shareholder:
 
    You are cordially invited to attend a special meeting of the shareholders of
CapRock Telecommunications Corp. (formerly known as CapRock Communications
Corp.)("Telecommunications") on                    , 1998 (the
"Telecommunications Special Meeting"), at which the shareholders of
Telecommunications will be asked to approve the combination of the businesses of
Telecommunications, CapRock Fiber Network, Ltd. (the "Partnership"), and IWL
Communications, Incorporated ("IWL"). Upon the consummation of this business
combination, Telecommunications and IWL will become wholly owned subsidiaries of
a newly formed holding company, CapRock Communications Corp. (formerly known as
IWL Holdings Corp.) ("Holdings"), and Holdings will become a substitute limited
partner in the Partnership, with Telecommunications becoming a substitute
general partner in the Partnership. In addition, at the Telecommunications
Special Meeting, the shareholders of Telecommunications will be asked to approve
the adoption of the CapRock Communications Corp. 1998 Equity Incentive Plan (the
"Equity Incentive Plan") and the CapRock Communications Corp. 1998 Director
Stock Option Plan (the "Director Stock Option Plan").
 
    Upon the completion of the business combination:
 
    - each outstanding share of Telecommunications common stock will be
      converted into 1.789030878 shares of Holdings common stock;
 
    - each one percent (1%) of the general and limited partnership interests in
      the Partnership that is validly tendered to and accepted by Holdings will
      be exchanged for 63,194.54 shares of Holdings common stock; and
 
    - each outstanding share of IWL common stock will be converted into one
      share of Holdings common stock.
 
    The accompanying Joint Proxy Statement/Prospectus provides you with detailed
information concerning the Telecommunications Special Meeting, the proposed
business combination and the Holdings common stock to be issued in connection
with the transaction, the Equity Incentive Plan, the Director Stock Option Plan
and certain other matters. Please read the accompanying Joint Proxy
Statement/Prospectus carefully and give this information your careful attention.
 
    Your Board of Directors (the "Board") has carefully reviewed and considered
the terms and conditions of the proposed business combination and believes that
the proposed business combination will provide opportunities to achieve
substantial benefits for Telecommunications shareholders and customers through
the more efficient utilization of the combined assets, management and personnel
of Telecommunications, the Partnership and IWL. Your Board further believes that
Holdings will be better able to capitalize on growth opportunities in the
telecommunications industry, both domestically and internationally, and be
better positioned to compete effectively in the rapidly changing
telecommunications industry.
 
    Your Board, by unanimous vote, has determined that the terms and provisions
of the proposed business combination are fair to, and in the best interests of,
Telecommunications and the shareholders of Telecommunications and recommends
that you vote FOR the proposal to approve the business combination.
 
    Your Board also has carefully reviewed and considered the Equity Incentive
Plan and the Director Stock Option Plan and unanimously recommends that you vote
FOR the proposals to approve each of these plans.
 
    Please complete, sign and date the enclosed proxy card and return it in the
enclosed prepaid envelope as soon as possible. This action will not limit your
right to revoke your proxy by attending the Telecommunications Special Meeting
and voting in person.
 
Sincerely yours,
 
Jere W. Thompson, Jr.
PRESIDENT
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                               TWO GALLERIA TOWER
                                13455 NOEL ROAD
                                   SUITE 1925
                              DALLAS, TEXAS 75240
                   NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                    TO BE HELD ON                    , 1998
 
                                                                   Dallas, Texas
                                                                          , 1998
 
    Notice is hereby given that a special meeting of the shareholders (the
"Telecommunications Special Meeting") of CapRock Telecommunications Corp.
(formerly known as CapRock Communications Corp.) ("Telecommunications") will be
held on                    , 1998 at 10:00 a.m. local time, at
                   , for the following purposes:
 
        1.  To consider and vote on a proposal to approve and adopt the
    Agreement and Plan of Merger and Plan of Exchange dated as of February 16,
    1998, as amended (as so amended, the "Merger Agreement"), among
    Telecommunications, CapRock Communications Corp., a Texas corporation
    formerly known as IWL Holdings Corp. ("Holdings"), IWL Acquisition Corp., a
    Texas corporation ("I-Sub"), IWL Communications, Incorporated, a Texas
    corporation ("IWL"), CapRock Acquisition Corp., a Texas corporation
    ("C-Sub"), and CapRock Fiber Network, Ltd., a Texas limited partnership (the
    "Partnership"), pursuant to which (i) I-Sub, a newly formed subsidiary of
    Holdings, will be merged with and into IWL, (ii) the general partnership
    interest and all of the limited partnership interests in the Partnership
    that are validly tendered to and accepted by Holdings will be exchanged (the
    "Interest Exchange") for shares of Holdings common stock and (iii) C-Sub, a
    newly formed subsidiary of Holdings, will be merged with and into
    Telecommunications (the mergers described in (i) and (iii) are collectively
    referred to herein as the "Mergers"). As a result of the Mergers and the
    Interest Exchange, and assuming that the general Partnership Interest and at
    least 80% of the limited Partnership Interests are validly tendered and
    accepted, Telecommunications and IWL will become wholly owned subsidiaries
    of Holdings, Telecommunications will become a substitute general partner in
    the Partnership and Holdings will become a substitute limited partner in the
    Partnership. Upon the consummation of the Mergers, each outstanding share of
    Telecommunications common stock will be converted into 1.789030878 shares of
    Holdings common stock and each outstanding share of IWL common stock will be
    converted into one share of Holdings common stock. Upon consummation of the
    Interest Exchange, each one percent (1%) general or limited partnership
    interest in the Partnership that is validly tendered to and accepted by
    Holdings will be exchanged for 63,194.54 shares of Holdings common stock.
 
        2.  To consider and vote on a proposal to approve the CapRock
    Communications Corp. 1998 Equity Incentive Plan (the "Equity Incentive
    Plan").
 
        3.  To consider and vote on a proposal to approve the CapRock
    Communications Corp. 1998 Director Stock Option Plan (the "Director Stock
    Option Plan").
 
        4.  To grant authorization to Telecommunications to adjourn the
    Telecommunications Special Meeting to solicit additional proxies.
 
        5.  To transact such other business as may properly come before the
    Telecommunications Special Meeting.
 
    Shareholders of record at the close of business on                    , 1998
will be entitled to receive notice of, and to vote at, the Telecommunications
Special Meeting. The presence, in person or by proxy, of the holders of a
majority of the outstanding shares of Telecommunications common stock entitled
to vote is necessary to constitute a quorum at the Telecommunications Special
Meeting. Under the Texas Business Corporation Act, the affirmative vote, in
person or by proxy, of the holders of at least two-thirds
<PAGE>
of the shares of Telecommunications common stock outstanding on the
Telecommunications record date and entitled to vote is required to approve and
adopt the Merger Agreement at a meeting at which a quorum is present. The
affirmative vote of a majority of the votes cast by the holders of
Telecommunications common stock, in person or by proxy, at the
Telecommunications Special Meeting at which a quorum is present and entitled to
vote thereon is required to approve all other action proposed, including the
Equity Incentive Plan and the Director Stock Option Plan, except that the
affirmative vote of the holders of a majority of the Telecommunications common
stock represented at the Telecommunications Special Meeting and entitled to vote
thereon is required to approve the adjournment of the Telecommunications Special
Meeting, if no quorum is present.
 
    Please note that attendance at the Telecommunications Special Meeting will
be limited to shareholders of Telecommunications as of the record date (or their
authorized representatives). If your shares are held by a bank or broker, please
bring to the Telecommunications Special Meeting evidence from your bank or
broker of your beneficial ownership of Telecommunications common stock. A
complete list of shareholders entitled to vote at the Telecommunications Special
Meeting will be maintained in Telecommunications' offices at Two Galleria Tower,
13455 Noel Road, Suite 1925, Dallas, Texas 75240, for ten (10) days prior to the
Telecommunications Special Meeting and will be open to the examination of any
shareholder during ordinary business hours of Telecommunications.
 
    Please advise Telecommunications, at its offices at such address to the
attention of its Corporate Secretary, of any changes in your address.
 
    WHETHER OR NOT YOU INTEND TO BE PRESENT AT THE TELECOMMUNICATIONS SPECIAL
MEETING, PLEASE PROMPTLY MARK, SIGN AND DATE THE ACCOMPANYING PROXY CARD AND
RETURN IT IN THE ENCLOSED ADDRESSED ENVELOPE. SHAREHOLDERS WHO DECIDE TO ATTEND
THE TELECOMMUNICATIONS SPECIAL MEETING MAY REVOKE THEIR PROXIES AT OR PRIOR TO
THE TELECOMMUNICATIONS SPECIAL MEETING AND VOTE IN PERSON EVEN IF THEY HAVE
PREVIOUSLY RETURNED A PROXY.
 
By Order of the Board of Directors,
- ------------------------------------
SECRETARY
<PAGE>
               [GENERAL PARTNER'S PRESIDENT'S LETTER AND NOTICE]
 
                   , 1998
 
Dear Partner:
 
    Notice is hereby given of the proposed combination of the businesses of
CapRock Fiber Network, Ltd. (the "Partnership"), CapRock Telecommunications
Corp. (formerly known as CapRock Communications Corp.)("Telecommunications") and
IWL Communications, Incorporated ("IWL"). Upon the consummation of this business
combination, Telecommunications and IWL will become wholly owned subsidiaries of
a newly formed holding company, CapRock Communications Corp. (formerly known as
IWL Holdings Corp.) ("Holdings"), and Holdings will become a substitute limited
partner in the Partnership, with Telecommunications becoming a substitute
general partner in the Partnership. In addition, in connection with such
transaction, Holdings intends to adopt the CapRock Communications Corp. 1998
Equity Incentive Plan (the "Equity Incentive Plan") and the CapRock
Communications Corp. 1998 Director Stock Option Plan (the "Director Stock Option
Plan").
 
    Upon the completion of the business combination:
 
    - each one percent (1%) of the general and limited partnership interests in
      the Partnership that is validly tendered to and accepted by Holdings will
      be exchanged for 63,194.54 shares of Holdings common stock;
 
    - each outstanding share of Telecommunications common stock will be
      converted into 1.789030878 shares of Holdings common stock; and
 
    - each outstanding share of IWL common stock will be converted into one
      share of Holdings common stock.
 
    Each partner of the Partnership is being provided with a contribution
agreement (the "Contribution Agreement") pursuant to which each partner may
elect, among other things, to:
 
        1.  Approve and adopt the Agreement and Plan of Merger and Plan of
    Exchange dated as of February 16, 1998, as amended (as so amended, the
    "Merger Agreement"), among the Partnership, Telecommunications, Holdings,
    IWL, IWL Acquisition Corp., a Texas corporation ("I-Sub"), and CapRock
    Acquisition Corp., a Texas corporation ("C-Sub"), pursuant to which (i)
    C-Sub and I-Sub, two newly formed subsidiaries of Holdings, will be merged
    with and into Telecommunications and IWL, respectively (the "Mergers"), and
    (ii) immediately after the effective time of the Merger of
    I-Sub into IWL and immediately prior to the effective time of the Merger of
    C-Sub into Telecommunications, the general partnership interest and all of
    the limited partnership interests in the Partnership that are validly
    tendered to and accepted by Holdings will be exchanged (the "Interest
    Exchange") for shares of Holdings common stock.
 
        2.  Transfer and contribute the partner's entire Partnership Interest in
    the Partnership to Holdings in exchange for shares of Holdings common stock
    at the exchange ratio set forth above, and consent to all other transfers of
    Partnership Interests in the Interest Exchange, including the transfer of
    the general Partnership Interest (i) from CapRock Systems, Inc., a Texas
    corporation that is the current general partner in the Partnership (the
    "General Partner") to Holdings, (ii) from Holdings to C-Sub, and (iii) from
    C-Sub to Telecommunications.
 
        3.  Consent to the substitution of Holdings as a substitute limited
    partner in the Partnership in respect of the limited Partnership Interests
    accepted by it in the Interest Exchange.
 
        4.  Consent to the substitution of Telecommunications as a substitute
    general partner in the Partnership in respect of the general Partnership
    Interest accepted by Holdings in the Interest Exchange and then transferred
    indirectly to Telecommunications.
 
        5.  Approve the Equity Incentive Plan.
<PAGE>
        6.  Approve the Director Stock Option Plan.
 
    The accompanying Joint Proxy Statement/Prospectus provides you with detailed
information concerning the Interest Exchange, the special meetings of the
shareholders of IWL and Telecommunications for the Mergers, the proposed
business combination and the Holdings common stock to be issued in connection
with the transaction, the Equity Incentive Plan, the Director Stock Option Plan
and certain other matters. Please read the accompanying Joint Proxy
Statement/Prospectus carefully and give this information your careful attention.
 
    The Board of Directors of the General Partner has carefully reviewed and
considered the terms and conditions of the proposed business combination and
believes that the proposed business combination will provide opportunities to
achieve substantial benefits for the Partnership's partners and customers
through the more efficient utilization of the combined assets, management and
personnel of the Partnership, Telecommunications and IWL. The General Partner's
Board of Directors further believes that Holdings will be better able to
capitalize on growth opportunities in the telecommunications industry, both
domestically and internationally, and be better positioned to compete
effectively in the rapidly changing telecommunications industry.
 
    The Board of Directors of the General Partner, by unanimous vote, has
determined that the terms and provisions of the proposed business combination
are fair to, and in the best interests of the Partnership and the holders of
partnership interests in the Partnership and recommends that you approve the
business combination and the Interest Exchange and, in connection therewith, the
substitution of Holdings and Telecommunications as a substitute limited partner
and general partner, respectively, in the Partnership.
 
    The Board of Directors of the General Partner also has carefully reviewed
and considered the Equity Incentive Plan and the Director Stock Option Plan and
unanimously recommends that you approve each of these plans.
 
    Please complete and sign the enclosed Contribution Agreement and return it
in the enclosed prepaid envelope as soon as possible (please leave the
Contribution Agreement undated; it will be dated as of the effective time of the
Mergers).
 
Sincerely yours,
Jere W. Thompson, Jr.
PRESIDENT, CAPROCK SYSTEMS, INC.
<PAGE>
                        JOINT PROXY STATEMENT/PROSPECTUS
                      FOR SPECIAL MEETINGS OF SHAREHOLDERS
                                       OF
                        IWL COMMUNICATIONS, INCORPORATED
                                      AND
                        CAPROCK TELECOMMUNICATIONS CORP.
 
                         TO BE HELD ON           , 1998
 
                            ------------------------
 
                          CAPROCK COMMUNICATIONS CORP.
 
                29,738,607 SHARES OF $.01 PAR VALUE COMMON STOCK
                               ------------------
 
                                   PROSPECTUS
 
    This Joint Proxy Statement/Prospectus is being furnished to holders of
common stock, par value $.01 per share ("IWL Common Stock"), of IWL
Communications, Incorporated, a Texas corporation ("IWL"), and holders of common
stock, $.01 par value per share ("Telecommunications Common Stock"), of CapRock
Telecommunications Corp., a Texas corporation formerly known as CapRock
Communications Corp. ("Telecommunications"), in connection with the solicitation
of proxies by the respective Boards of Directors of IWL and Telecommunications
for use at their respective special meetings of shareholders, and at any
adjournment or postponement thereof (the "IWL Special Meeting" and the
"Telecommunications Special Meeting," respectively, and, collectively, the
"Special Meetings"), called to consider and vote upon (i) a proposal to approve
and adopt the Agreement and Plan of Merger and Plan of Exchange, dated as of
February 16, 1998, as amended (as so amended, the "Merger Agreement"), among
IWL, Telecommunications, CapRock Communications Corp., a Texas corporation
formerly known as IWL Holdings Corp. ("Holdings"), IWL Acquisition Corp., a
Texas corporation ("I-Sub"), CapRock Acquisition Corp., a Texas corporation
("C-Sub"), and CapRock Fiber Network, Ltd., a Texas limited partnership (the
"Partnership"), and (ii) proposals (collectively, the "Plan Proposals") to
approve each of the CapRock Communications Corp. 1998 Equity Incentive Plan (the
"Equity Incentive Plan") and the CapRock Communications Corp. 1998 Director
Stock Option Plan (the "Director Stock Option Plan"). This Joint Proxy
Statement/Prospectus is also being furnished in connection with the issuance of
shares of Holdings Common Stock (as defined below) to holders of IWL Common
Stock, holders of Telecommunications Common Stock, and holders of Partnership
Interests (as defined below) upon the consummation of the Mergers and the
Interest Exchange (as defined below). The combination of the businesses of IWL,
Telecommunications and the Partnership contemplated by the Merger Agreement is
referred to herein as the "Transaction." Prior to the mailing of this Joint
Proxy Statement/Prospectus, Holdings, which was incorporated as "IWL Holdings
Corp.," changed its name to "CapRock Communications Corp." and, in connection
therewith, Telecommunications changed its name from "CapRock Communications
Corp." to "CapRock Telecommunications Corp."
 
    The Merger Agreement provides, among other things, for (a) the merger of
I-Sub with and into IWL (the "IWL Merger"), with IWL surviving the IWL Merger as
a wholly owned subsidiary of Holdings, (b) the exchange (the "Interest
Exchange") of the general partnership interest and at least 80% of the limited
partnership interests (collectively, the "Partnership Interests") in the
Partnership that are validly tendered to and accepted by Holdings pursuant to
the Exchange Offer (as defined below) for shares of the common stock, par value
$.01 per share, of Holdings (the "Holdings Common Stock") and (c) the merger of
C-Sub with and into Telecommunications (the "Telecommunications Merger" and,
together with the IWL Merger, the "Mergers"), with Telecommunications surviving
the Telecommunications Merger as a wholly owned subsidiary of Holdings. Upon the
effectiveness of the Mergers, the shares of IWL Common Stock and the shares of
Telecommunications Common Stock will be converted into shares of Holdings Common
Stock, and the holders of such shares will become shareholders of Holdings, on
the terms described in the Merger Agreement and this Joint Proxy
Statement/Prospectus. The Mergers are expected to become effective after the
receipt of the requisite regulatory and shareholder approvals (the "Effective
Time"). As part of the Interest Exchange, Holdings will contribute to C-Sub the
general Partnership Interest in the Partnership received by Holdings in the
Interest Exchange. At the Effective Time of the Telecommunications Merger,
Telecommunications, as successor by merger to C-Sub, will acquire the general
Partnership Interest in the Partnership and will become a substitute general
partner in the Partnership. In addition, the Interest Exchange will result in
Holdings becoming a substitute limited partner in the Partnership in respect of
the limited Partnership Interests received by it in the Interest Exchange.
Holders of Partnership Interests that are validly tendered in the Exchange Offer
to and are accepted by Holdings will receive shares of Holdings Common Stock in
exchange for their interests in the Partnership and will become shareholders of
Holdings on the terms described in the Merger Agreement and this Joint Proxy
Statement/Prospectus. Holders of Telecommunications Common Stock will be
entitled to appraisal rights but holders of IWL Common Stock and holders of
Partnership Interests will not have such appraisal rights. See "The Transaction"
and "The Merger Agreement."
 
                                       1
<PAGE>
    SEE "RISK FACTORS" BEGINNING ON PAGE 38 OF THIS JOINT PROXY
STATEMENT/PROSPECTUS FOR A DISCUSSION OF CERTAIN MATTERS WHICH SHOULD BE
CAREFULLY CONSIDERED BY HOLDERS OF IWL COMMON STOCK AND HOLDERS OF
TELECOMMUNICATIONS COMMON STOCK IN DETERMINING HOW TO VOTE WITH RESPECT TO THE
MERGER AGREEMENT AND BY HOLDERS OF PARTNERSHIP INTERESTS IN DETERMINING WHETHER
TO PARTICIPATE IN THE INTEREST EXCHANGE.
 
    Holdings has filed a registration statement on Form S-4 (together with all
amendments, schedules and exhibits filed or incorporated by reference as a part
thereof, the "Registration Statement") under the Securities Act of 1933, as
amended (the "Securities Act"), with respect to up to 29,738,607 shares of
Holdings Common Stock that are proposed to be issued (i) in connection with the
Mergers to holders of outstanding shares of IWL Common Stock and to holders of
outstanding shares of Telecommunications Common Stock, (ii) in connection with
the Interest Exchange to holders of outstanding Partnership Interests in the
Partnership, and (iii) upon the exercise of IWL and Telecommunications stock
options and warrants that are outstanding and unexercised at the Effective Time
and that, pursuant to the Merger Agreement, will be assumed by Holdings and
converted into options and warrants to purchase shares of Holdings Common Stock.
This Joint Proxy Statement/Prospectus also constitutes the Prospectus of
Holdings filed as part of the Registration Statement. Upon completion of the
Transaction, the former holders of IWL Common Stock, stock options and warrants,
the former holders of Telecommunications Common Stock and stock options, and the
former holders of the Partnership Interests (assuming all Partnership Interests
are validly tendered to and accepted by Holdings in the Exchange Offer) will
hold approximately 15%, 63.8% and 21.2%, respectively, of the issued and
outstanding shares of Holdings Common Stock, on a diluted basis.
 
    Prior to the Effective Time, IWL shall use its best efforts to obtain the
approval for listing on the Nasdaq National Market, subject to official notice
of issuance, of the Holdings Common Stock registered under the Registration
Statement. It is a condition to the closing of the Transaction that such
approval be obtained. See "The Merger Agreement--Consideration to be Received in
the Mergers," "--Treatment of Stock Options" and "--Certain Conditions."
 
    This Joint Proxy Statement/Prospectus and the accompanying form of proxy are
first being mailed to holders of IWL Common Stock, holders of Telecommunications
Common Stock and holders of Partnership Interests on or about June   , 1998.
 
    THE EXCHANGE OFFER WILL EXPIRE AT 12:00 MIDNIGHT, EASTERN TIME, ON JULY   ,
1998, UNLESS EXTENDED. SEE "THE INTEREST EXCHANGE."
 
                         ------------------------------
 
    THE IWL BOARD HAS DETERMINED THAT THE TERMS OF THE MERGER AGREEMENT ARE FAIR
TO, AND IN THE BEST INTERESTS OF THE HOLDERS OF IWL COMMON STOCK AND RECOMMENDS
THAT HOLDERS OF IWL COMMON STOCK VOTE FOR THE APPROVAL OF THE MERGER AGREEMENT.
THE TELECOMMUNICATIONS BOARD HAS DETERMINED THAT THE TERMS OF THE MERGER
AGREEMENT ARE FAIR TO, AND IN THE BEST INTERESTS OF, TELECOMMUNICATIONS AND THE
HOLDERS OF TELECOMMUNICATIONS COMMON STOCK AND RECOMMENDS THAT THE HOLDERS OF
TELECOMMUNICATIONS COMMON STOCK VOTE FOR THE APPROVAL OF THE MERGER AGREEMENT.
 
    THE GENERAL PARTNER'S BOARD OF DIRECTORS HAS DETERMINED THAT THE TERMS OF
THE MERGER AGREEMENT AND THE EXCHANGE OFFER ARE FAIR TO, AND IN THE BEST
INTERESTS OF, THE PARTNERSHIP AND THE HOLDERS OF PARTNERSHIP INTERESTS AND
RECOMMENDS THAT THE HOLDERS OF PARTNERSHIP INTEREST PARTICIPATE IN THE INTEREST
EXCHANGE AND, IN CONNECTION THEREWITH, EXCHANGE THEIR PARTNERSHIP INTERESTS FOR
SHARES OF HOLDINGS COMMON STOCK PURSUANT TO THE MERGER AGREEMENT AND THE
EXCHANGE OFFER.
 
                         ------------------------------
 THE SECURITIES TO BE ISSUED PURSUANT TO THIS JOINT PROXY STATEMENT/PROSPECTUS
     HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND EXCHANGE
   COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE COMMISSION OR
     ANY STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY
       OF THIS JOINT PROXY STATEMENT/ PROSPECTUS. ANY REPRESENTATION TO
                      THE CONTRARY IS A CRIMINAL OFFENSE.
 
    This Joint Proxy Statement/Prospectus does not cover any resales of the
Holdings Common Stock to be received by the holders of IWL Common Stock or the
holders of Telecommunications Common Stock upon the consummation of the Mergers
or to be received by holders of Partnership Interests upon consummation of the
Interest Exchange. No person is authorized to make any use of this Joint Proxy
Statement/Prospectus in connection with any such resale.
 
      THE DATE OF THIS JOINT PROXY STATEMENT/PROSPECTUS IS JUNE   , 1998.
 
                                       2
<PAGE>
                             AVAILABLE INFORMATION
 
    IWL is subject to the information reporting requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports, proxy and information statements and other information
with the Securities and Exchange Commission (the "Commission"). Upon
consummation of the Transaction, Holdings will be subject to the information
reporting requirements of the Exchange Act, and in accordance therewith, will be
required to file reports, proxy and information statements and other information
with the Commission. Such reports, proxy and information statements and other
information filed with the Commission can be inspected and copied at the public
reference facilities maintained by the Commission at Judiciary Plaza, 450 Fifth
Street, Room 1024, N.W., Washington, D.C. 20549 and at the Regional Offices of
the Commission at Seven World Trade Center, 13th Floor, New York, New York 10048
and Citicorp Center, 500 West Madison Street, Suite 1400, Chicago, Illinois
60661-2511. Copies of such material can also be obtained at prescribed rates
from the Public Reference Section of the Commission at 450 Fifth Street, N.W.,
Judiciary Plaza, Washington, D.C. 20549. The Commission maintains a Web site on
the Internet that contains reports, proxy and information statements and other
information regarding registrants that file electronically with the Commission
including IWL (http: / / www.sec.gov). IWL Common Stock is listed on the Nasdaq
National Market and such information with respect to IWL may also be inspected
at the offices of the National Association of Securities Dealers, Inc., 1735 K
Street, N.W., Washington, D.C. 20006. Upon consummation of the Transaction,
Holdings' Common Stock will be listed on the Nasdaq National Market and such
information with respect to Holdings may also be inspected at the offices of the
National Association of Securities Dealers, Inc., 1735 K Street, N.W.,
Washington, D.C. 20006.
 
    This Joint Proxy Statement/Prospectus does not include all of the
information set forth in the Registration Statement filed by Holdings with the
Commission under the Securities Act, as permitted by the rules and regulations
of the Commission. The Registration Statement is available for inspection and
copying as set forth above. Statements contained in this Joint Proxy
Statement/Prospectus or in any document incorporated herein by reference or
included herein concerning the contents of any contract or other document
referred to herein or therein are not necessarily complete and in each instance
reference is made to the copy of such contract or other document filed as an
exhibit to the Registration Statement or such other document, and each statement
shall be deemed qualified in its entirety by such reference.
 
    NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR MAKE ANY
REPRESENTATION OTHER THAN THOSE CONTAINED OR INCORPORATED BY REFERENCE IN THIS
JOINT PROXY STATEMENT/PROSPECTUS, AND, IF GIVEN OR MADE, SUCH INFORMATION OR
REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED. THIS JOINT
PROXY STATEMENT/PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR A
SOLICITATION OF AN OFFER TO BUY THE SECURITIES COVERED BY THIS JOINT PROXY
STATEMENT/ PROSPECTUS OR A SOLICITATION OF A PROXY IN ANY JURISDICTION WHERE, OR
TO OR FROM ANY PERSON TO WHOM, IT IS UNLAWFUL TO MAKE SUCH OFFER OR
SOLICITATION. NEITHER THE DELIVERY OF THIS JOINT PROXY STATEMENT/PROSPECTUS NOR
ANY DISTRIBUTION OF SECURITIES MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES,
CREATE ANY IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF IWL,
TELECOMMUNICATIONS, THE PARTNERSHIP OR HOLDINGS SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED OR INCORPORATED HEREIN BY REFERENCE IS CORRECT AS OF
ANY TIME SUBSEQUENT TO ITS DATE.
 
    Neither Telecommunications nor the Partnership is currently subject to the
reporting requirements of the Exchange Act, and neither has any class of
securities listed on a national securities exchange or quoted on the Nasdaq
National Market.
 
                                       3
<PAGE>
           CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS
 
    This Joint Proxy Statement/Prospectus contains certain forward-looking
statements (as defined in the Private Securities Litigation Reform Act of 1995),
including, without limitation, the information concerning possible, assumed or
projected future results of operations of Holdings set forth under "The
Transaction--Recommendation of IWL Board,"--"Recommendation of
Telecommunications Board," "--Reasons for the Transaction," "--Fairness Opinion
of IWL Financial Advisor," "Business of Holdings," "Summary--Summary Selected
Unaudited Pro Forma Combined Condensed Financial Data" and "Unaudited Pro Forma
Combined Condensed Financial Statements," statements preceded by, followed by or
that include the words "believes," "expects," "anticipates," "intends," "plans,"
"estimates," "may," "will," "could," "should," or "continue" or the negative
thereof or other variations thereof and other similar expressions and all other
statements that are not historical facts. All forward-looking statements in this
report are based on management's current expectations of the near term results
of Holdings based on certain assumptions and current information available
pertaining to Holdings, including the risk factors described below under the
caption "Risk Factors." All forward-looking statements involve risks and
uncertainties and do not purport to be predictions of future events or
circumstances and actual results could differ materially. Readers are cautioned
that the following important factors, in addition to those discussed elsewhere
herein (including, without limitation, the matters discussed under "Risk
Factors"), could affect the future results of Holdings and cause those results
to differ materially from those expressed in such forward-looking statements:
the ability to service substantial indebtedness and to comply with the
restrictive covenants associated therewith, the ability of Holdings to manage
rapid change and to integrate the business of three companies and achieve the
benefits of the Transaction, Holdings' ability to fund its significant capital
requirements, risks related to building a fiber network, risks associated with
the development of provisioning, billing, customer service and management
information systems, competition and technological advances, dependence on other
long distance and local carriers, dependence on key personnel, risks associated
with industry concentration, and dependence on major customers, risks associated
with international customers, risks of government regulation, risks of possible
service interruptions and natural disasters, risks associated with being an
Internet service provider, risks of obtaining and maintaining rights of way for
the fiber network, risks associated with variability of operating results, risks
of claims relating to ownership of proprietary rights, risks associated with the
Year 2000 issues and risks associated with general business and economic
conditions.
 
                                       4
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<S>                                                                                     <C>
AVAILABLE INFORMATION.................................................................          3
 
CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS............................          4
 
SUMMARY...............................................................................         11
  The Companies.......................................................................         11
  The Special Meetings................................................................         17
  The Mergers.........................................................................         20
  Risk Factors........................................................................         27
  The Plan Proposals..................................................................         27
  Summary Selected Unaudited Pro Forma
    Combined Condensed Financial Data.................................................         28
  Summary Selected Historical Financial Data of IWL...................................         30
  Summary Selected Historical Financial Data of Telecommunications....................         32
  Summary Selected Historical Financial Data of the Partnership.......................         34
  Comparative Per Share Information...................................................         36
  Comparative Per Share Market Price Information......................................         37
  Listing of Holdings Common Stock....................................................         37
  Dividend Policy.....................................................................         37
 
RISK FACTORS..........................................................................         38
  Fixed Exchange Ratio................................................................         38
  Sustantial Indebtedness; Restrictive Covenants......................................         38
  Holding Company Structure; Structural Subordination.................................         39
  Managing Rapid Change; Integration of Combined Businesses...........................         40
  Significant Capital Requirements....................................................         40
  Risks Related to the Fiber Network..................................................         41
  Development of Provisioning, Billing, Customer Service
    and Management Information Systems................................................         42
  Competition.........................................................................         42
  Dependence on Other Long Distance Carriers..........................................         44
  Dependence on Incumbent Local Exchange Carriers.....................................         45
  Dependence on Key Personnel.........................................................         45
  Dependence on Major Customers.......................................................         45
  Risks Associated with International Customers.......................................         46
  Regulation of Long Distance and Local Telephone Services............................         46
  Possible Service Interruptions; Natural Disasters...................................         47
  Potential Liability of Internet Service Providers...................................         48
  Need to Obtain and Maintain Rights-of-Way...........................................         48
  Failure to Consummate Transaction; Proceeds in Escrow Account May Be Insufficient to
    Repurchase Proposed Notes.........................................................         48
  Variability in Operating Results....................................................         49
  Possible Claims Relating to Ownership of Proprietary Rights.........................         49
  Lack of Dividends...................................................................         49
  Concentration of Ownership..........................................................         50
  Change of Control of IWL............................................................         50
  Year 2000 Compliance................................................................         50
  Certain Anti-Takeover Matters.......................................................         50
  Assumption of General Partner Liabilities...........................................         51
 
THE TRANSACTION.......................................................................         52
  General.............................................................................         52
</TABLE>
 
                                       5
<PAGE>
<TABLE>
<S>                                                                                     <C>
  Background of the Transaction.......................................................         52
  Recommendation of IWL Board.........................................................         58
  Recommendation of Telecommunications Board..........................................         59
  Recommendation of General Partner Board.............................................         59
  Reasons for the Transaction.........................................................         60
  Fairness Opinion of IWL Financial Advisor...........................................         62
  Interests of Certain Persons in the Transaction.....................................         66
  Accounting Treatment................................................................         68
  Certain United States Federal Income Tax Consequences of the Mergers................         68
  Certain United States Federal Income Tax Consequences of the Interest Exchange......         70
  Regulatory Approvals................................................................         71
  Nasdaq Listing......................................................................         71
  Delisting and Deregistration of IWL Common Stock;
    Cessation of Periodic Reporting...................................................         72
  Federal Securities Laws Consequences................................................         72
  Appraisal Rights....................................................................         72
 
BUSINESS OF HOLDINGS..................................................................         76
 
DIRECTORS AND MANAGEMENT OF HOLDINGS..................................................         78
  Directors...........................................................................         78
  Committees of Holdings..............................................................         78
  Compensation of Directors and Officers..............................................         78
  Executive Compensation..............................................................         80
 
OWNERSHIP OF HOLDINGS.................................................................         80
 
COMPARATIVE PER SHARE MARKET PRICE AND DIVIDEND INFORMATION...........................         83
 
SELECTED HISTORICAL FINANCIAL DATA OF TELECOMMUNICATIONS..............................         84
 
SELECTED HISTORICAL FINANCIAL DATA OF THE PARTNERSHIP.................................         86
 
SELECTED HISTORICAL FINANCIAL DATA OF IWL.............................................         88
 
UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL STATEMENTS...........................         90
 
NOTES TO UNAUDITED PRO FORMA
  COMBINED CONDENSED FINANCIAL STATEMENTS.............................................         96
 
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
  AND RESULTS OF OPERATIONS OF TELECOMMUNICATIONS.....................................         97
  Overview............................................................................         97
  Results of Operations...............................................................         97
  New Accounting Pronouncements.......................................................         99
  Liquidity and Capital Resources.....................................................        100
  Contingencies.......................................................................        101
  Year 2000...........................................................................        101
 
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
  AND RESULTS OF OPERATIONS OF THE PARTNERSHIP........................................        102
  Overview............................................................................        102
  Results of Operations...............................................................        102
  New Accounting Pronouncements.......................................................        104
  Liquidity and Capital Resources.....................................................        105
  Contingencies.......................................................................        106
  Year 2000...........................................................................        106
</TABLE>
 
                                       6
<PAGE>
<TABLE>
<S>                                                                                     <C>
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
  AND RESULTS OF OPERATIONS OF IWL....................................................        107
  Overview............................................................................        107
  New Accounting Pronouncements.......................................................        112
  Liquidity and Capital Resources.....................................................        113
  Contingencies.......................................................................        114
  Year 2000...........................................................................        114
 
OFFERING OF PROPOSED NOTES............................................................        114
 
INFORMATION REGARDING TELECOMMUNICATIONS..............................................        116
  Business............................................................................        116
  Products and Services...............................................................        116
  Carrier Services....................................................................        118
  Sales and Marketing.................................................................        118
  Competition and Government Regulation...............................................        119
  Customer Care and Support Systems...................................................        120
  Employees...........................................................................        120
  Properties..........................................................................        120
  Legal Proceedings...................................................................        121
  Directors and Executive Officers....................................................        121
  Executive Compensation..............................................................        122
  Employee Benefit Plans and Arrangements.............................................        122
  Related Party Transactions..........................................................        123
  Security Ownership of Certain Beneficial Owners
    and Management of Telecommunications..............................................        124
 
INFORMATION REGARDING THE PARTNERSHIP.................................................        126
  Business............................................................................        126
  Network.............................................................................        126
  Service Agreements..................................................................        127
  Competition.........................................................................        127
  Employees...........................................................................        127
  Properties..........................................................................        127
  Legal Proceedings...................................................................        127
  Directors and Executive Officers....................................................        127
  Executive Compensation..............................................................        127
  Related Party Transactions..........................................................        128
  Ownership of Certain Beneficial Owners and Management of the Partnership............        128
 
INFORMATION REGARDING IWL.............................................................        130
  Business............................................................................        130
  Service Offerings...................................................................        131
  Project Management Services.........................................................        131
  Offshore Services...................................................................        131
  Internet Service Provider...........................................................        131
  Wireless Services...................................................................        131
  Sales and Marketing.................................................................        131
  Customer Service....................................................................        132
  Competition and Government Regulation...............................................        132
  Employees...........................................................................        132
  Licenses and Certifications.........................................................        132
  Properties..........................................................................        133
</TABLE>
 
                                       7
<PAGE>
<TABLE>
<S>                                                                                     <C>
  Legal Proceedings...................................................................        133
  Directors and Executive Officers....................................................        134
  Board Committees....................................................................        135
  Director Compensation...............................................................        136
  Compensation Committee Interlocks and Insider Participation.........................        136
  Executive Compensation..............................................................        136
  Summary Compensation Table..........................................................        137
  Option Grants in Last Fiscal Year...................................................        137
  Fiscal Year-End Option Values Table.................................................        138
  Incentive Bonus Program.............................................................        138
  Related Party Transactions..........................................................        138
  Security Ownership of Certain Beneficial Owners and Management of IWL...............        138
COMPETITION...........................................................................        140
REGULATION AND LICENSES...............................................................        143
  Government Regulation...............................................................        143
  Licenses............................................................................        148
 
THE SPECIAL MEETINGS..................................................................        149
  General.............................................................................        149
  Record Dates........................................................................        149
  Times and Places; Purposes..........................................................        149
  Voting Rights; Votes Required for Approval..........................................        150
  Proxies.............................................................................        151
 
THE MERGER AGREEMENT..................................................................        152
  General.............................................................................        152
  Consideration to be Received in the Mergers.........................................        153
  Dissenter's Rights..................................................................        154
  Treatment of Stock Options..........................................................        154
  Holdings Following the Merger.......................................................        154
  Certain Conditions..................................................................        155
  Certain Representations and Warranties..............................................        156
  Certain Covenants...................................................................        156
  No Solicitation of Transactions.....................................................        157
  Control of Other Party's Business...................................................        157
  Employment Agreements...............................................................        157
  Pooling Accounting..................................................................        158
  Termination.........................................................................        158
  Effect of Termination...............................................................        159
  Expenses............................................................................        159
  Modification or Amendment...........................................................        160
 
THE INTEREST EXCHANGE.................................................................        160
  Terms of the Exchange; Expiration Date..............................................        160
  Acceptance for Exchange.............................................................        161
  Conditions..........................................................................        161
  Procedure for Tendering Partnership Interests.......................................        162
  Withdrawal Rights...................................................................        163
  Representations, Appointments, Waivers and Covenants................................        163
  Extension of Tender Period; Termination; Amendment..................................        164
 
THE PLAN PROPOSALS....................................................................        165
  The Equity Incentive Plan...........................................................        165
</TABLE>
 
                                       8
<PAGE>
<TABLE>
<S>                                                                                     <C>
  The Director Stock Option Plan......................................................        168
  Certain Federal Income Tax Consequences.............................................        169
 
COMPARISON OF SHAREHOLDER RIGHTS......................................................        171
  Comparison of Shareholder Rights of IWL and Holdings................................        172
  Comparison of Shareholder Rights of Telecommunications and Holdings.................        172
 
COMPARISON OF PARTNERSHIP INTERESTS AND HOLDINGS COMMON STOCK.........................        174
  Issuer..............................................................................        175
  Taxation............................................................................        175
  Distributions and Dividends.........................................................        175
  Management..........................................................................        176
  Voting Rights.......................................................................        176
  Special Meetings....................................................................        177
  Conversion Rights...................................................................        177
  Liquidation Rights..................................................................        177
  Right to Compel Dissolution.........................................................        177
  Limited Liability...................................................................        178
  Liquidity and Marketability.........................................................        178
  Continuity of Existence.............................................................        178
  Financial Reporting.................................................................        178
  Certain Legal Rights................................................................        178
  Right to List of Holders; Inspection of Books and Records...........................        179
 
DESCRIPTION OF HOLDINGS CAPITAL STOCK.................................................        179
  Authorized Capital Stock............................................................        179
  Common Stock........................................................................        179
  Preferred Stock.....................................................................        180
  Preemptive Rights...................................................................        180
  Transfer Agent and Registrar........................................................        180
  Certain Anti-Takeover Effects.......................................................        180
 
LEGAL MATTERS.........................................................................        181
 
EXPERTS...............................................................................        181
 
ACCOUNTANTS...........................................................................        181
 
FUTURE STOCKHOLDER PROPOSALS..........................................................        182
CAPROCK TELECOMMUNICATIONS CORP. (FORMERLY CAPROCK COMMUNICATIONS CORP.)
 
Independent Auditors' Report of KPMG Peat Marwick LLP.................................        F-1
Independent Auditors' Report of Burds, Reed and Mercer, P.C...........................        F-2
Balance Sheets as of December 31, 1996 and 1997 and March 31, 1998....................        F-3
Statements of Operations for the years ended December 31, 1995, 1996 and 1997 and for
  the three months ended March 31, 1997 and 1998......................................        F-4
Statements of Stockholders' Equity for the years ended December 31, 1995, 1996 and
  1997 and the three months ended March 31, 1998......................................        F-5
Statements of Cash Flows for the years ended December 31, 1995, 1996 and 1997 and for
  the three months ended March 31, 1997 and 1998......................................        F-6
Notes to Financial Statements.........................................................        F-7
 
CAPROCK FIBER NETWORK, LTD.
 
Independent Auditors' Report of KPMG Peat Marwick LLP.................................       F-16
</TABLE>
 
                                       9
<PAGE>
<TABLE>
<S>                                                                                     <C>
Independent Auditors' Report of Burds, Reed and Mercer, P.C...........................       F-17
Balance Sheets as of December 31, 1996 and 1997 and March 31, 1998....................       F-18
Statements of Operations for the years ended December 31, 1995, 1996 and 1997 and for
  the three months ended March 31, 1997 and 1998......................................       F-19
Statements of Partners' Deficit for the years ended December 31, 1995, 1996 and 1997
  and the three months ended March 31, 1998...........................................       F-20
Statements of Cash Flows for the years ended December 31, 1995, 1996 and 1997 and for
  the three months ended March 31, 1997 and 1998......................................       F-21
Notes to Financial Statements.........................................................       F-22
 
IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
Independent Auditors' Report..........................................................       F-27
Consolidated Balance Sheets as of June 30, 1996 and 1997 and December 31, 1997........       F-28
Consolidated Statements of Operations for the years ended June 30, 1995, 1996 and 1997
  and for the six months ended December 31, 1996 and 1997.............................       F-29
Consolidated Statements of Stockholders' Equity for the years ended June 30, 1995,
  1996 and 1997 and for the six months ended December 31, 1997........................       F-30
Consolidated Statements of Cash Flows for the years ended June 30, 1995, 1996 and 1997
  and for the six months ended December 31, 1996 and 1997.............................       F-31
Notes to Consolidated Financial Statements............................................       F-33
Consolidated Balance Sheets as of December 31, 1997 and March 31, 1998................       F-49
Consolidated Statements of Operations for the three months ended March 31, 1997 and
  1998................................................................................       F-50
Consolidated Statements of Cash Flows for the three months ended March 31, 1997 and
  1998................................................................................       F-51
Notes to Consolidated Financial Statements............................................       F-52
 
CAPROCK COMMUNICATIONS CORP. (FORMERLY IWL HOLDINGS CORP.)
 
Independent Auditors' Report..........................................................       F-54
Consolidated Balance Sheet as of March 31, 1998.......................................       F-55
Notes to Balance Sheet................................................................       F-56
</TABLE>
 
<TABLE>
<S>            <C>          <C>
Appendix I              -   Merger Agreement, as amended
Appendix II             -   Opinion of Cruttenden Roth Incorporated
Appendix III            -   Articles of Incorporation of CapRock
                            Communications Corp.
Appendix IV             -   Bylaws of CapRock Communications Corp.
Appendix V              -   Articles 5.11 through 5.13 of the
                            the Texas Business Corporation Act
Appendix VI             -   CapRock Communications Corp. 1998
                            Equity Incentive Plan
Appendix VII            -   CapRock Communications Corp. 1998
                            Director Stock Option Plan
</TABLE>
 
                                       10
<PAGE>
                                    SUMMARY
 
    THIS SUMMARY IS NOT INTENDED TO BE COMPLETE AND IS QUALIFIED IN ITS ENTIRETY
BY THE MORE DETAILED INFORMATION CONTAINED ELSEWHERE IN THIS JOINT PROXY
STATEMENT/PROSPECTUS, THE APPENDICES HERETO AND THE DOCUMENTS OTHERWISE REFERRED
TO HEREIN, INCLUDING THE FINANCIAL STATEMENTS AND THE NOTES THERETO OF
TELECOMMUNICATIONS, THE PARTNERSHIP AND IWL. HOLDERS OF TELECOMMUNICATIONS
COMMON STOCK, HOLDERS OF PARTNERSHIP INTERESTS AND HOLDERS OF IWL COMMON STOCK
SHOULD CAREFULLY CONSIDER THE FACTORS SET FORTH HEREIN UNDER THE CAPTION "RISK
FACTORS" AND ARE URGED TO READ THIS JOINT PROXY STATEMENT/PROSPECTUS. UNLESS THE
CONTEXT OTHERWISE INDICATES, ALL REFERENCES TO TELECOMMUNICATIONS, THE
PARTNERSHIP AND IWL HEREIN INCLUDE SUCH COMPANIES AND THEIR RESPECTIVE
SUBSIDIARIES AND PREDECESSORS. UNLESS THE CONTEXT OTHERWISE REQUIRES OR AS
OTHERWISE EXPRESSLY PROVIDED HEREIN, REFERENCES IN THIS JOINT PROXY
STATEMENT/PROSPECTUS TO HOLDINGS REFER TO CAPROCK COMMUNICATIONS CORP. AND ITS
SUBSIDIARIES, COLLECTIVELY, INCLUDING, AFTER CONSUMMATION OF THE MERGERS AND THE
INTEREST EXCHANGE, TELECOMMUNICATIONS, THE PARTNERSHIP AND IWL AND THEIR
RESPECTIVE SUBSIDIARIES. ALL REFERENCES HEREIN TO YEARS ARE REFERENCES TO
CALENDAR YEARS AND NOT NECESSARILY FISCAL YEARS UNLESS OTHERWISE STATED. IN
CONNECTON WITH THE TRANSACTION, IN MAY 1998, IWL CHANGED ITS FISCAL YEAR END
FROM JUNE 30 TO DECEMBER 31.
 
                                 THE COMPANIES
 
HOLDINGS
 
    Holdings is a Texas corporation that was formed on February 3, 1998 to be a
holding company for IWL, Telecommunications and the Partnership and their
respective subsidiaries following the consummation of the Mergers and the
Interest Exchange. Prior to the consummation of the Transaction, Holdings has
had and will have no operations other than those incident to its formation, its
execution of the Merger Agreement, the preparation of this Joint Proxy
Statement/Prospectus and, possibly, the incurrence of the Proposed Notes (as
defined below). See "Offering of Proposed Notes." Holdings currently has no
operations and nominal or no assets and liabilities, and, unless the context
otherwise requires, all discussions herein of the historical and planned
business operations and strategy of Holdings assumes, on a pro forma basis, that
the proposed business combination to be effected by the Mergers and Interest
Exchange has been consummated. On such pro forma basis, Holdings would have had
1997 revenues and net income of approximately $75.3 million and $2.6 million,
respectively. Prior to the mailing of this Joint Proxy Statement/Prospectus,
Holdings, which was incorporated as "IWL Holdings Corp.," changed its name to
"CapRock Communications Corp." and, in connection therewith, Telecommunications
changed its name from "CapRock Communications Corp." to "CapRock
Telecommunications Corp."
 
    Holdings intends to become the leading facilities-based integrated
communications provider ("ICP") in Texas, Louisiana, Oklahoma and Arkansas
("Texas and the Gulf Coast region"). The combined businesses will offer a
complete suite of telecommunications services including local, long distance,
Internet, data and private line services to small and medium-sized businesses.
Holdings will also provide switched and dedicated access, domestic and
international long distance, private lines and dark fiber to carrier customers.
Holdings believes the Transaction will enable it to significantly accelerate the
implementation of its business plan and to more rapidly achieve its business
objectives by: (i) enhancing its revenue opportunities by leveraging the
existing and planned fiber and switching network infrastructure of each company
to offer voice, data, and broadband services in markets geographically clustered
along or near Holdings' infrastructure, (ii) creating greater organizational
depth through the combination of the sales, customer service and networking
strengths of Telecommunications with the technological, project management, and
last mile distribution expertise of IWL and the fiber network construction and
operational expertise of the Partnership, (iii) providing the opportunity to
cross-sell its products and provide single source onshore and offshore
communications solutions to IWL's existing base of oil and gas customers and to
Telecommunications' existing base of business and carrier customers throughout
Texas and the Gulf Coast region, (iv) capitalizing on international revenue
opportunities through the combination of Telecommunications' customer base, the
Partnership's planned network and IWL's relationships with foreign
 
                                       11
<PAGE>
regulators and communications providers and (v) reducing the combined capital
expenditures of the three companies through the construction of a single
communications infrastructure.
 
BUSINESS STRATEGY
 
    Holdings' business objectives are (i) to become the leading ICP in Texas and
the Gulf Coast region, offering local, long distance, data and private line
services to end-user customers, (ii) to establish itself as the premier
carriers' carrier in Texas and the Gulf Coast region, providing voice, data and
broadband services over the most extensive alternative fiber optic network in
Texas and the Gulf Coast region, and (iii) to capitalize on the growing
opportunities to provide international long distance and international project
services. To achieve these objectives, Holdings intends to:
 
    BECOME A SINGLE SOURCE PROVIDER OF COMMUNICATIONS AND NETWORK INTEGRATION
SERVICES.  Holdings believes that there is significant demand among small and
medium-sized business customers in its target markets for an integrated package
of communications services and equipment tailored to satisfy the customer's
total communications needs. Holdings intends to offer its customers local,
domestic and international long distance, data (including asynchronous transfer
mode ("ATM"), frame relay, digital subscriber line and Internet) and broadband
(including T-1/E-1, DS-3, OC-N and dark fiber) services. Holdings believes that
its ability to provide an integrated package of communications services, to
provide, install and maintain a broad range of communications equipment and to
invoice these services on a single, convergent bill will enable it to rapidly
penetrate its targeted markets, capture virtually all of its customers'
expenditures for telecommunications services and equipment, increase customer
satisfaction and reduce customer turnover.
 
    STRATEGICALLY BUILD OUT ITS REGIONAL FIBER NETWORK.  Holdings intends to
expand the Partnership's fiber optic network to approximately 4,300 miles
throughout Texas and the Gulf Coast region. Holdings' fiber optic backbone will
provide it with a platform to offer an integrated package of voice, data and
broadband services, as well as to access primary, secondary and tertiary cities
and the tandems of incumbent local exchange carriers ("ILECs") throughout Texas
and the Gulf Coast region. The Partnership owns and operates 260 route miles of
fiber network in Texas extending from Houston to Victoria and Corpus Christi,
and is currently constructing an additional 500 route miles in Texas from San
Antonio to Laredo, McAllen, Harlingen, Brownsville and Corpus Christi. The
completion of Holdings' network will allow it to originate and terminate most of
its customers' voice and data traffic within the region on-net, dramatically
increase its available broadband capacity and link together more markets than
other competitive providers of communications services in the region.
 
    OFFER DATA, INTERNET AND ENHANCED SERVICES TO ACCELERATE MARKET PENETRATION
AND MINIMIZE POTENTIAL CHURN.  Data services represent one of the fastest
growing product segments in the communications industry. Holdings believes it
can accelerate new account penetration and minimize potential churn by offering
local area network ("LAN") interconnections, frame relay, ATM, Internet
services, Integrated Services Digital Network ("ISDN"), digital subscriber line
("DSL"), Web page design, Web server hosting, and other enhanced services not
generally available from the ILECs (or available only at prices higher than
those Holdings intends to charge). Holdings intends to leverage its expertise in
providing data services by targeting small and medium-sized business customers,
as well as data-intensive and multi-point customers, such as banks, financial
institutions and health care providers.
 
    BUILD MARKET SHARE THROUGH PERSONALIZED SALES AND CUSTOMER
SERVICE.  Holdings believes the most effective method of acquiring and retaining
a high quality customer base is through a consultative, face-to-face sales
process to develop creative solutions and respond rapidly to customers'
communications needs, as well as providing superior and personalized customer
service. Holdings believes that small and medium-sized business customers in its
target markets have been neglected by the ILECs with respect to these
approaches. Holdings intends to significantly increase the size of its direct
and agent sales forces over the next three years.
 
                                       12
<PAGE>
    DEVELOP EFFICIENT AUTOMATED BACK OFFICE SYSTEMS.  Holdings will handle its
provisioning, customer care, convergent billing and traffic reporting functions
on a proprietary software platform currently being jointly developed by
Telecommunications and a related party. These operations support systems ("OSS")
and other back office systems are required to enter, schedule and track a
customer's order from the point of sale to the installation and testing of
service. These systems also include or interface with trouble management,
inventory, billing, collection and customer service systems. The system is
scalable and flexible to support Holdings' expected future back office
requirements. The system, when fully implemented, will enable Holdings to: (i)
minimize the time to initiate local and long distance services for new customers
internally and through the ILEC (commonly referred to as provisioning), (ii)
provide detailed and customized customer billing information, (iii) respond
quickly to customers' needs and information requests, and (iv) monitor and
analyze traffic, financial and operating trends. Holdings believes that this
system, when fully implemented, will provide a significant competitive advantage
in terms of cost, ability to process large order volumes, and customer service
as compared to ILECs using legacy systems and CLECs that outsource back-office
services or that do not have an advanced OSS platform.
 
    EXPAND INTERNATIONAL SERVICE OFFERINGS.  Holdings believes that it can
leverage IWL's existing international commercial relationships, regulatory
expertise and points of presence in Texas, Russia and Scotland with
Telecommunications' extensive relationships with domestic carriers to
significantly increase Holdings' international traffic.
 
    PURSUE ACQUISITIONS AND STRATEGIC ALLIANCES.  In Holdings' target markets, a
large number of small private companies provide local and long distance
services, data services, Internet services, and telecommunications equipment.
This fragmentation creates numerous opportunities for Holdings to acquire
industry participants that can provide technical support, management talent,
customers and product extensions and could enable Holdings to accelerate the
implementation of its business plan. Holdings also intends to pursue strategic
relationships with utilities, state transportation departments and other
governmental authorities.
 
    LEVERAGE ITS EXPERIENCED MANAGEMENT TEAM.  Holdings' management team will
include individuals with significant experience in the deployment and marketing
of communications services. Jere W. Thompson, Jr., President of
Telecommunications and Chief Executive Officer of Holdings, founded the
Partnership in 1992. Ignatius W. Leonards, Chief Executive Officer of IWL and
President of Holdings, founded IWL in 1981 and has over 23 years of experience
in the telecommunications industry. Timothy W. Rogers, Timothy M. Terrell and
Scott L. Roberts, each Executive Vice Presidents of Telecommunications and
Holdings, founded Telecommunications in 1991 and have a combined 33 years of
telecommunications experience working at Sprint Corporation ("Sprint"), Qwest
Communications International Inc. ("Qwest") and Telecommunications in carrier
and commercial sales. Byron M. Allen, President of IWL and an Executive Vice
President of Holdings, has five years of experience in the domestic and
international telecommunications industry, and Kevin W. McAleer, Holding's Chief
Financial Officer, has over 16 years of experience as the chief financial
officer of publicly-held companies.
 
    The mailing address of Holdings' principal executive offices is Two Galleria
Tower, 13455 Noel Road, Suite 1925, Dallas, Texas 75240 and its telephone number
is (972) 982-9500.
 
TELECOMMUNICATIONS
 
    Telecommunications commenced operations in Dallas, Texas in 1992. It is a
facilities-based provider of voice, data and broadband communications services
to interexchange carriers and other communications entities and to businesses
and consumers. In 1997, Telecommunications' revenues more than doubled, growing
from $23.2 million in 1996 to $46.7 million, and net income was $1.8 million as
compared to a net loss of $183,000 in 1996. Telecommunications' volume of
monthly long distance minutes of traffic has grown from approximately 2.6
million minutes in April 1994 to approximately 75 million minutes in
 
                                       13
<PAGE>
April 1998. The number of Telecommunications' full-time direct and contract
employees has increased from 42 on December 31, 1996 to 85 on April 30, 1998.
 
    Telecommunications' early strategy was to double in size every year, to grow
from internal cash flow, to develop the internal systems and processes to
support its growth, and once cash flow from carrier services generated excess
capital, to build a commercial services division. In mid-1996,
Telecommunications began investing in the infrastructure to support commercial
sales activities. As a result, Telecommunications' commercial sales grew
five-fold in 1997 over 1996 and now represents approximately 30% of sales.
Telecommunications currently has a direct sales force of five carrier and 23
commercial sales people and an agent sales force numbering approximately 100
independent agents throughout Texas.
 
    Telecommunications owns a DSC DEX 600 switch in Dallas, Texas, and a smaller
PC-based switch used to provide calling card services. To extend
Telecommunications' reach across the Southwest and to lower its terminating
costs in the Western United States, Telecommunications has acquired a second DEX
600 switch, which is currently being installed in Phoenix, Arizona.
Telecommunications intends to install an advanced mainframe switch capable of
providing local and long distance services in Houston, Texas in the second half
of 1998.
 
    Telecommunications' provisioning, customer care, convergent billing and
network traffic reporting functions are performed on a proprietary software
platform, which is being developed jointly with Thompson Technology, Inc.
Telecommunications believes that this platform is scalable, flexible and well
suited to support Telecommunications' strategy to minimize the time to initiate
local and long distance services for new customers, to provide detailed and
customized customer billing information, to respond quickly to customers' needs
and information requests, and to provide convergent billing for local, long
distance, data and private line services. See "Information Regarding
Telecommunications--Business-- Billing and Information Systems."
 
    Telecommunications currently has over 30 carrier customers including AT&T
Corporation ("AT&T"), IXC Communications, Inc. ("IXC"), MCI Communications
Corporation ("MCI"), Qwest and Sprint, as well as various regional independent
telephone companies, such as Century Telephone Enterprises, Inc. and Lufkin
Conroe Telephone. Telecommunications offers its commercial customers flat rate
pricing with rates generally lower than those of AT&T, MCI, Sprint and WorldCom,
Inc. ("WorldCom"). Telecommunications has introduced various local exchange
services ("LEC Services") to customers by acquiring such services from various
ILECs on a bundled basis and reselling them. Telecommunications also offers
frame-relay and ATM data products, as well as broadband services that it resells
over the networks of other carriers.
 
    The mailing address of Telecommunications' principal executive offices is
Two Galleria Tower, 13455 Noel Road, Suite 1925, Lock Box 46, Dallas, Texas
75240-6638 and its telephone number is (972) 982-9500.
 
THE PARTNERSHIP
 
    The Partnership is a facilities-based provider of broadband
telecommunications services ("Telecommunications Services") to interexchange
carriers, other communications entities and businesses. The Partnership had no
revenues in 1996. In 1997 it had revenues and a net loss of $1.9 million and
$104,000, respectively.
 
    The Partnership began operations in 1992 to design, manage the construction
of, operate, maintain and market a 185 route mile fiber optic network in South
Texas. In 1996, the Partnership entered into a ten year contract for the lease
of dark fiber over a 260 route mile fiber network between Houston and Corpus
Christi, Texas. The Partnership completed construction of the network in January
1997. In January 1998, the Partnership entered into a contract for the sale of
dark fiber between San Antonio and Laredo, Texas. The Partnership expects to
complete the construction of approximately 500 additional route miles of fiber
 
                                       14
<PAGE>
network from San Antonio to Laredo, McAllen, Harlingen, Brownsville and Corpus
Christi, Texas by the end of 1998. The Partnership intends to expand its
regional fiber network to approximately 4,300 route miles throughout Texas and
the Gulf Coast region by the end of 2000. The Partnership's ability to expand
its network and grow its revenues will be dependent upon a number of factors,
including the availability of financing, and, as a result, no assurance can be
given that its expansion plans will be met.
 
    The Partnership provides dedicated line services over the Partnership's
owned fiber network to interexchange carriers and other telecommunications
providers for terms of one year or longer. High volume capacity service
agreements and dedicated line service agreements generally provide for "take or
pay" monthly payments at fixed rates based on the capacity term and length of
circuit used. Customers are typically billed on a monthly basis and also may
incur an installation charge or certain ancillary charges for equipment. After
contract expiration, the contracts may be renewed or the services may be
provided on a month-to-month basis. The Partnership is expanding its network to
increase its revenue stream and reduce per unit costs, targeting capacity sales
on a segment-by-segment basis as the Partnership's network is deployed and
activated, and is increasingly seeking longer-term, high-volume capacity
agreements from major carriers. In addition to traditional telecommunications
carriers, the Partnership is marketing to Internet service providers and other
data service companies.
 
    As of December 31, 1997, substantially all of the Partnership's revenues
were derived from two customers. One of the customers provided for approximately
93% of total revenues and comprised 78% of the trade receivable balance. The
other significant customer provided for approximately 5% of total revenues in
1997 and comprised 22% of the trade receivable balance. The lease terms are
through August 2004 and July 2006, respectively.
 
    The mailing address of the Partnership's principal executive offices is Two
Galleria Tower, 13455 Noel Road, Suite 1925, Lock Box 46, Dallas, Texas
75240-6638 and its telephone number is (972) 982-9500.
 
IWL
 
    IWL's total revenues are derived from the provision of a variety of
services, including telecommunications services, project and other services and
product resales. IWL had revenues and net income of $30.3 million and $689,000
for its fiscal year ended June 30, 1997 compared to revenues and net income of
$27.8 million and $734,000 for its fiscal year 1996. Telecommunications services
include the resale of long distance telecommunications services, the provision
of private leased lines and the rental of telecommunications equipment and
systems. IWL operates a tandem switch at its facility in Houston, Texas to
provide services as a switch-based long distance carrier and is currently
completing the installation of its Gulf Coast regional network. Project and
other services consist of the installation of telecommunications system projects
and the sale, service and maintenance of communications systems.
 
    In connection with product resales, IWL serves as the exclusive
manufacturer's representative of products of Alcatel Network Systems, Inc.
("Alcatel") to the U.S. oil and gas industry. In fiscal 1996 and 1997, IWL
provided services to a subsidiary of Shell Oil Company ("Shell"), which included
the resale of a significant amount of Alcatel products. For the years ended June
30, 1996 and 1997, the Shell subsidiary purchased from IWL approximately $10.6
million and $7.6 million, respectively, of Alcatel products and other equipment
and hardware, representing approximately 38.0% and 25.2%, respectively, of total
sales during such periods. Although profitable, the sale of Alcatel products to
the Shell subsidiary significantly reduced IWL's gross margin in these periods.
The Shell project was substantially completed in May 1997 and, therefore, is not
expected to contribute in a material manner to IWL's total sales in future
periods.
 
    IWL was founded in 1981 as a contract supplier of communications technology
installation and equipment leasing services and over the ensuing years broadened
the scope of its service offerings to include microwave, two-way radio and
related wireless services and technologies for an expanded customer base,
primarily comprised of major oil and gas companies operating in the Gulf of
Mexico region. During this period, IWL began to provide an increasing variety of
services to its oil and gas customers in other
 
                                       15
<PAGE>
remote and underdeveloped regions around the world, including communications
services for special projects with critical timing and other extreme or unusual
challenges.
 
    To support its international expansion, in 1994 IWL began providing
telecommunications services and network support inside the former Soviet Union
to United States oil and gas customers. As IWL expanded its service offerings
and developed greater infrastructure, it commenced service as a switchless
reseller of long distance services in the United States in 1994. IWL is
continuing to expand its network through its tandem switch and the installation
of fiber optic cable and microwave radios in targeted service areas. In
connection with such expansion, IWL has also received CLEC status in Texas and
Louisiana.
 
    While annual growth rates of IWL's total sales since 1992 have ranged from
6.3% to 76.0%, IWL's quarterly operating results have varied significantly in
the past and can be expected to vary in the future. These fluctuations in
operating results generally are caused by a number of factors, including changes
in IWL's services and product mix, levels of product resales, adverse weather
conditions in customer locations, the degree to which IWL encounters competition
in its existing or target markets, general economic conditions, the volume and
timing of orders received during the period, sales and marketing expenses
related to entering new markets, the timing of new product or service
introductions by IWL or its competitors and changes in billing rates by IWL or
its competitors. IWL's ability to grow its revenues will be dependent upon a
number of factors, many of which are not within its control and, as a result, no
assurance can be given that such objectives will be met.
 
    In May 1998, IWL changed its fiscal year to a December 31 year end to
coincide with the fiscal years of Holdings, Telecommunications and the
Partnership. Within the time period required under the Exchange Act (as defined
below), IWL will file a December 31, 1997 transition period Form 10-K for the
transition period from June 30, 1997 to December 31, 1997.
 
    The mailing address of IWL's principal executive offices is 12000 Aerospace
Avenue, Suite 200, Houston, Texas 77034 and its telephone number is (281)
482-0289. IWL also has domestic offices in Friendswood, Texas, and Lafayette and
New Orleans, Louisiana, and international offices in Moscow, Russia, and
Aberdeen, Scotland.
 
OFFERING OF PROPOSED NOTES
 
    It is expected that after the date of this Joint Proxy Statement/Prospectus
and prior to the Effective Time, Holdings, Telecommunications and the
Partnership (collectively, the "Note Issuer") (with IWL as a guarantor of
certain obligations with respect to the Proposed Notes) will offer, through a
private placement under Rule 144A under the Securities Act, senior notes (the
"Proposed Notes"), although there is no assurance that the Proposed Notes will,
in fact, be offered or, if offered, will be sold. The following is a description
of the Proposed Notes that Holdings currently anticipates offering, but there is
no assurance that the terms of any Proposed Notes actually offered and sold, if
any, will not vary significantly from the terms described in this Joint Proxy
Statement/Prospectus. Holdings currently expects that the aggregate principal
amount of the certain obligations with respect to Proposed Notes to be offered
will be approximately $150 million, but may be more or less. The maturity date
of the Proposed Notes will be ten years after the date of their issuance, and
interest on the Proposed Notes will be payable semi-annually in cash, commencing
approximately six months after the date of issuance. The Proposed Notes will be
senior unsecured obligations of Holdings, and as such, will rank PARI PASSU in
right of payment with all existing and future unsecured and unsubordinated
indebtedness of Holdings. Holdings, Telecommunications and the Partnership (with
IWL as a guarantor) will be required to make a special offer to purchase the
Proposed Notes at 101% of their principal amount, plus accrued and unpaid
interest to the date of repayment, in the event that the Transaction is not
consummated and certain other conditions are not satisfied by August 31, 1998,
or if it appears, in the sole judgment of the Note Issuer, that the Transaction
will not be consummated or such conditions will not be satisfied by such date.
Prior to the earlier of (i) the date on which the Transaction is consummated and
certain other conditions are satisfied and (ii) the date
 
                                       16
<PAGE>
on which payment is made for all Proposed Notes tendered in such special offer
to purchase, the net proceeds from the offering of the Proposed Notes will be
held in an escrow account pursuant to the terms of an escrow and security
agreement (the "Escrow Agreement"). To the extent amounts held in the Escrow
Account are insufficient to repurchase Proposed Notes tendered pursuant to the
special offer to purchase, Holdings, Telecommunications, the Partnership and IWL
(as guarantor) have jointly and severally agreed to repay such amounts (with an
estimated contingent liability of not more than $6 million). There can be no
assurance that Holdings, Telecommunications, the Partnership and IWL will have
sufficient funds available at the time of the special offer to purchase to repay
all Proposed Notes tendered. Following payment of all Proposed Notes tendered in
the special offer to purchase, if any Proposed Notes remain outstanding,
Holdings and IWL will be released from their obligations under the Proposed
Notes and Telecommunications and the Partnership will be required to effect
either a statutory merger or interest exchange within 60 days after the payment
of all Proposed Notes tendered in the special offer to purchase (so that
Telecommunications will be the sole obligor under the Proposed Notes). In the
event the Transaction is consummated by August 31, 1998, Telecommunications and
the Partnership will be released from the Proposed Notes (and IWL will be
released from its obligations under such special offer to purchase), and
Holdings will be the sole obligor thereunder. See "Offering of Proposed Notes."
 
                              THE SPECIAL MEETINGS
 
TELECOMMUNICATIONS
 
    The Telecommunications Special Meeting will be held at           on
          , 1998, starting at     a.m., local time. At the Telecommunications
Special Meeting, holders of Telecommunications Common Stock will be asked to (i)
approve and adopt the Merger Agreement, (ii) approve the Plan Proposals, (iii)
grant authorization to Telecommunications to adjourn the Telecommunications
Special Meeting to solicit additional proxies, and (iv) approve such other
business as may properly come before the Telecommunications Special Meeting. See
"The Transaction," "The Merger Agreement" and "The Plan Proposals."
 
    Holders of record of Telecommunications Common Stock at the close of
business on           , 1998 (the "Telecommunications Record Date") have the
right to receive notice of, and to vote at, the Telecommunications Special
Meeting. On the Telecommunications Record Date, there were approximately
10,398,954 shares of Telecommunications Common Stock outstanding. Each share of
Telecommunications Common Stock is entitled to one vote on each matter that is
properly presented to shareholders for a vote at the Telecommunications Special
Meeting. Under the Texas Business Corporation Act (the "TBCA") and pursuant to
the provisions of Telecommunications' Articles of Incorporation, the affirmative
vote of the holders of at least two-thirds of the outstanding shares of
Telecommunications Common Stock entitled to vote thereon is required to approve
and adopt the Merger Agreement. The affirmative vote of a majority of the votes
cast by the holders of Telecommunications Common Stock at the Telecommunications
Special Meeting at which a quorum is present is required to approve the Plan
Proposals and any other matter that properly comes before the Telecommunications
Special Meeting. The affirmative vote of the holders of a majority of the
Telecommunications Common Stock represented in person or by proxy at the
Telecommunications Special Meeting at which a quorum is not present is required
to approve the adjournment of the Special Meeting. The Merger Agreement and the
Plan Proposals are also subject to approval by the holders of IWL Common Stock
as described below. IWL, in its capacity as the current sole shareholder of
Holdings, has adopted and approved the Equity Incentive Plan and the Director
Stock Option Plan. Proxies may be revoked by notice of revocation or a later
signed and dated proxy or by attending the Special meeting and voting in person.
Attendance at the Special Meeting will not in itself constitute the revocation
of a proxy. See "The Special Meeting--Voting Rights, Vote Required for Approval"
and "--Proxies."
 
    As of the Telecommunications Record Date, CapRock Investors, a Texas joint
venture ("CapRock Investors"), owned 23.5% by Jere W. Thompson, Jr., the
President and a director of Telecommunications,
 
                                       17
<PAGE>
42.5% by Mark Langdale, a director of Telecommunications, and 30.9% by Jere W.
Thompson, Sr., a director of Telecommunications, owned 4,835,514 shares of
Telecommunications Common Stock, which represented approximately 46.5% of the
outstanding shares of Telecommunications Common Stock as of such date. As of the
Telecommunications Record Date, each of Scott L. Roberts, Timothy W. Rogers and
Timothy M. Terrell, each of whom is an Executive Vice President of
Telecommunications, owned 1,611,838 shares of Telecommunications Common Stock,
which represented in the aggregate approximately 46.5% of the outstanding shares
of Telecommunications Common Stock as of such date. CapRock Investors and
Messrs. Roberts, Rogers and Terrell entered into the CapRock Owners Agreement
(as hereinafter defined) with IWL pursuant to which they have agreed to vote all
of their respective shares of Telecommunications Common Stock in favor of the
approval of the Merger Agreement, subject to the conditions set forth in the
CapRock Owners Agreement. If the conditions set forth in the CapRock Owners
Agreement are satisfied, approval of the Merger Agreement by the holders of
Telecommunications Common Stock is assured. See "The Transaction--Interests of
Certain Persons in the Transaction--CapRock Owners Agreement."
 
IWL
 
    The IWL Special Meeting will be held at           , on           , 1998,
starting at     a.m., local time. At the IWL Special Meeting, holders of IWL
Common Stock will be asked to (i) approve and adopt the Merger Agreement, (ii)
approve the Plan Proposals, (iii) grant authorization to IWL to adjourn the IWL
Special Meeting to solicit additional proxies, and (iv) approve such other
business as may properly come before the IWL Special Meeting. See "The
Transaction," "The Merger Agreement" and "The Plan Proposals."
 
    Holders of record of IWL Common Stock at the close of business on
          , 1998 (the "IWL Record Date") have the right to receive notice of,
and to vote at, the IWL Special Meeting. On the IWL Record Date, there were
approximately    shares of IWL Common Stock issued and outstanding and entitled
to vote. Each share of IWL Common Stock is entitled to one vote on each matter
that is properly presented to shareholders for a vote at the IWL Special
Meeting. Under the TBCA, and pursuant to the provisions of IWL's Articles of
Incorporation, the affirmative vote of the holders of a majority of the
outstanding shares of IWL Common Stock entitled to vote thereon is required to
approve and adopt the Merger Agreement. The affirmative vote of a majority of
the votes cast by the holders of IWL Common Stock at the IWL Special Meeting at
which a quorum is present is required to approve the Plan Proposals and any
other matter that properly comes before the IWL Special Meeting. The affirmative
vote of the holders of a majority of the IWL Common Stock represented in person
or proxy at the IWL Special Meeting at which a quorum is not present is required
to approve an adjournment of the IWL Special Meeting. The Merger Agreement and
the Plan Proposals are also subject to approval by the holders of
Telecommunications Common Stock as described above. IWL, in its capacity as the
current sole shareholder of Holdings, has adopted and approved the Equity
Incentive Plan and the Director Stock Option Plan. Proxies may be revoked by
notice of revocation or a later signed and dated proxy or by attending the
Special meeting and voting in person. Attendance at the IWL Special Meeting will
not in itself constitute the revocation of a proxy. See "The Special
Meetings--Voting Rights, Vote Required for Approval" and "--Proxies."
 
    As of the IWL Record Date, Ignatius W. Leonards, the Chief Executive Officer
and Chairman of the Board of IWL, beneficially owned 1,897,528 shares of IWL,
which represented approximately 47.6% of the outstanding shares of IWL Common
Stock as of such date. As of the IWL Record Date, Byron M. Allen, President and
a director of IWL, beneficially owned 222,200 shares of IWL, which represented
approximately 5.6% of the outstanding shares of IWL Common Stock as of such
date. Messrs. Leonards and Allen entered into the IWL Shareholders Agreement (as
hereunder defined) with Telecommunications and the Partnership pursuant to which
they have agreed to vote all of their respective shares of IWL Common Stock in
favor of the approval of the Merger Agreement, subject to the conditions set
forth in the IWL Shareholders Agreement. If the conditions set forth in the IWL
Shareholders Agreement are satisfied,
 
                                       18
<PAGE>
approval of the Merger Agreement by the holders of IWL Common Stock is assured.
See "The Transaction--Interests of Certain Persons in the Transaction--IWL
Shareholders Agreement."
 
THE PARTNERSHIP
 
    The consent of the limited partners of the Partnership is not required to
approve the Merger Agreement, the Mergers and the transactions contemplated
thereby. The Interest Exchange is not a statutory interest exchange; as a
result, the partners of the Partnership will not vote on or consent to the
Interest Exchange, but will each make his or its own decision whether to accept
the Exchange Offer. However, the consummation of the Transaction, including the
consummation of the Mergers, is conditioned on the receipt by Holdings of a
Contribution Agreement (as defined below) from the General Partner and from
Limited Partners holding, in the aggregate, at least 80% of the limited
Partnership Interests in the Partnership pursuant to which such partner, among
other things, shall approve and adopt the Merger Agreement, transfer and
contribute the partner's entire Partnership Interest in the Partnership to
Holdings in exchange for shares of Holdings Common Stock at the exchange ratio
set forth in the Merger Agreement, consent to all transfers of Partnership
Interests contemplated by the Interest Exchange, consent to the substitution of
Holdings as a substitute limited partner in the Partnership, consent to the
substitution of Telecommunications as a substitute general partner in the
Partnership, approve the Equity Incentive Plan and approve the Director Stock
Option Plan. See "The Interest Exchange."
 
                                       19
<PAGE>
                                  THE MERGERS
 
CONSIDERATION TO BE RECEIVED BY SHAREHOLDERS
 
    Pursuant to the Merger Agreement, I-Sub will be merged with and into IWL,
with IWL surviving the IWL Merger as a wholly owned subsidiary of Holdings. Upon
consummation of the IWL Merger, (i) each outstanding share of IWL Common Stock
will be converted into the right to receive one share of Holdings Common Stock
(the "IWL Exchange Ratio") and (ii) any outstanding shares of IWL Common Stock
held by IWL in its treasury will be canceled and will cease to exist. See "The
Merger Agreement--Consideration to be Received in the Mergers." For a
description of Holdings Common Stock, see "Description of Holdings Capital
Stock." For a summary of the principal differences between the rights of holders
of IWL Common Stock and holders of Holdings Common Stock, see "Comparison of
Shareholders' Rights."
 
    Pursuant to the Merger Agreement, C-Sub will be merged with and into
Telecommunications, with Telecommunications surviving the Telecommunications
Merger as a wholly owned subsidiary of Holdings. Upon consummation of the
Telecommunications Merger, (i) each outstanding share of Telecommunications
Common Stock will be converted into 1.789030878 shares (the "Telecommunications
Exchange Ratio") of Holdings Common Stock (the "Telecommunications Merger
Consideration") and (ii) any outstanding shares of Telecommunications Common
Stock held by Telecommunications in its treasury will be canceled and will cease
to exist. Fractional shares of Holdings Common Stock will not be issued in
connection with the Telecommunications Merger. For a discussion of the treatment
of fractional shares that would otherwise be issued, see "The Merger
Agreement--Consideration to be Received in the Mergers." For a description of
Holdings Common Stock, see "Description of Holdings Capital Stock." For a
summary of the principal differences between the rights of holders of
Telecommunications Common Stock and holders of Holdings Common Stock, see
"Comparison of Shareholders' Rights."
 
    For a description of the treatment of outstanding options to purchase IWL
Common Stock and outstanding options to purchase Telecommunications Common Stock
upon the consummation of the Mergers, see "The Merger Agreement--Treatment of
Stock Options."
 
    HOLDERS OF TELECOMMUNICATIONS COMMON STOCK AND HOLDERS OF IWL COMMON STOCK
SHOULD NOT SEND IN THEIR STOCK CERTIFICATES WITH THEIR PROXY CARDS. A LETTER OF
TRANSMITTAL WITH INSTRUCTIONS REGARDING THE EXCHANGE OF SHARES OF HOLDINGS'
COMMON STOCK WILL BE SENT TO FORMER HOLDERS OF TELECOMMUNICATIONS COMMON STOCK
AND IWL COMMON STOCK AS SOON AS PRACTICABLE FOLLOWING THE EFFECTIVE TIME.
 
    The following table sets forth the exchange ratio and the value of the
shares of Holdings Common Stock to be received upon the Mergers and the Interest
Exchange calculated based on the high and the low sales price of shares of IWL
Common Stock as reported on the Nasdaq National Market from June 12, 1997
through June 12, 1998:
 
<TABLE>
<CAPTION>
                                                                              TOTAL VALUE TO
                                                                                    BE
                                                                             RECEIVED AT THE    TOTAL VALUE TO BE
                                                               EXCHANGE             52         RECEIVED AT THE 52
                                                                RATIO        WEEK LOW - $5.00  WEEK HIGH - $26.375
                                                           ----------------  ----------------  -------------------
<S>                                                        <C>               <C>               <C>
IWL......................................................               1:1   $   19,933,590     $   105,149,687
Telecommunications.......................................     1.789030878:1       93,020,250         490,681,819
The Partnership..........................................       63,194.54:1%      31,597,270         166,675,599
</TABLE>
 
    These values are shown for illustrative purposes only. Actual values
received will be dependent upon the market value of Holdings Common Stock. There
can be no assurance that the values reflected in this table will be achieved and
the prices of the IWL Common Stock may vary after the modified exchange ratios
are announced on June 22, 1998.
 
                                       20
<PAGE>
    Each one percent (1%) of the Partnership Interests issued and outstanding
immediately before the Effective Time and all rights in respect thereof at the
Effective Time shall, if validly tendered to and accepted by Holdings, be
exchanged for 63,194.54 shares of Holdings Common Stock.
 
THE INTEREST EXCHANGE
 
    In connection with the Mergers, holders of all Partnership Interests in the
Partnership are being offered the opportunity to tender their Partnership
Interests to Holdings in exchange for Holdings Common Stock (the "Exchange
Offer"). Each one percent (1%) of the Partnership Interests issued and
outstanding immediately before the Effective Time and all rights in respect
thereof at the Effective Time shall, if validly tendered to and accepted by
Holdings, be exchanged for 63,194.54 (the "Partnership Exchange Ratio") shares
of Holdings Common Stock (the "Interest Exchange Consideration").
 
    The consent of the limited partners of the Partnership is not required to
approve the Merger Agreement, the Mergers and the transactions contemplated
thereby. The Interest Exchange is not a statutory interest exchange; as a
result, the limited partners of the Partnership will not vote on or consent to
the Interest Exchange, but will each make his or its own decision whether to
exchange such partner's Partnership Interests for Holdings Common Stock.
However, it is a condition to the consummation of the Transaction, including the
Mergers, that the General Partner and limited partners holding, in the
aggregate, at least 80% of the limited Partnership Interests in the Partnership
shall have executed and delivered to Holdings a Contribution Agreement in
respect of such holder's Partnership Interest, shall have consented to the
transfers of Partnership Interests contemplated by the Interest Exchange, shall
have consented to the substitution of Telecommunications as a substitute General
Partner in the Partnership and of Holdings as a substitute limited partner in
the Partnership and shall have approved the Plan Proposals.
 
    For additional information regarding the Interest Exchange and the Exchange
Offer, see "The Interest Exchange" and "The Transaction--Certain United States
Federal Income Tax Consequences of the Interest Exchange."
 
OWNERSHIP OF HOLDINGS AFTER THE TRANSACTION
 
    Immediately following the Mergers and the Interest Exchange, assuming all
Partnership Interests are validly tendered and accepted, the former holders of
IWL Common Stock will collectively hold approximately 13.8% of the issued and
outstanding shares of Holdings Common Stock, the former holders of
Telecommunications Common Stock will collectively hold approximately 64.4% of
the issued and outstanding shares of Holdings Common Stock, and the former
partners of the Partnership will hold approximately 21.8% of the issued and
outstanding shares of Holdings Common Stock. On a diluted basis, the holders of
common stock, options, warrants, and partnership interests of IWL,
Telecommunications and the Partnership will own approximately 15%, 63.8% and
21.2% of equity interests in Holdings, respectively. Consequently, the former
holders of the Telecommunications Common Stock and options and the former
holders of Partnership Interests in the Partnership will hold over 50% of the
shares of Holdings to be outstanding immediately after the consummation of the
Transaction.
 
                                       21
<PAGE>
    The following two charts show the ownership structure of the various parties
to the Merger Agreement prior to the consummation of the Transaction and
following the consummation of the Transaction.
 
                           PRE-TRANSACTION STRUCTURE
 
                                     [LOGO]
 
                           POST-TRANSACTION STRUCTURE
 
                                    [GRAPH]
 
                                       22
<PAGE>
RECOMMENDATION OF IWL'S BOARD OF DIRECTORS
 
    The Board of Directors of IWL (the "IWL Board"), by unanimous vote, has
determined that the terms and provisions of the Merger Agreement are fair to,
and in the best interests of, IWL and the holders of IWL Common Stock and
recommends that holders of IWL Common Stock vote in favor of approval of the
Merger Agreement. The decision of the IWL Board to enter into the Merger
Agreement and to recommend that holders of IWL Common Stock vote in favor of the
approval of the Merger Agreement is based upon its evaluation of a number of
factors, including, among others, the written opinion of Cruttenden Roth
Incorporated ("Cruttenden Roth"), IWL's financial advisor in connection with the
Transaction, dated June 19, 1998 and updated as of the date of this Joint Proxy
Statement/Prospectus, stating that, as of such dates and based on and subject to
the assumptions, limitations and qualifications set forth therein, from a
financial point of view, the relative exchange ratios were fair to the
shareholders of IWL. See "The Transaction--Recommendation of IWL Board" and
"--Fairness Opinions--Fairness Opinion of IWL's Financial Advisor."
 
RECOMMENDATION OF TELECOMMUNICATIONS' BOARD OF DIRECTORS
 
    The Board of Directors of Telecommunications (the "Telecommunications
Board"), by unanimous vote, has determined that the Transaction is fair to and
in the best interests of Telecommunications and the holders of
Telecommunications Common Stock and recommends that the holders of
Telecommunications Common Stock vote in favor of approval of the Merger
Agreement. See "The Transaction--Recommendation of Telecommunications Board."
 
RECOMMENDATION OF BOARD OF DIRECTORS OF GENERAL PARTNER
 
    The Board of Directors of CapRock Systems, Inc. (the "General Partner
Board"), a Texas corporation that is the current general partner of the
Partnership (the "General Partner"), by unanimous vote, has determined that the
Transaction is in the best interests of the Partnership and the holders of
Partnership Interests and recommends that the holders of Partnership Interests
participate in the Interest Exchange by accepting the Exchange Offer and that,
in connection therewith, they deliver to Holdings their Contribution Agreement
with respect to their Partnership Interests. See "The
Transaction--Recommendation of General Partner Board."
 
REASONS FOR THE TRANSACTION
 
    The combination of IWL, Telecommunications and the Partnership will create
an integrated communications company with extensive assets and customers in
Texas and the Gulf Coast region. The IWL Board, the Telecommunications Board and
the General Partner Board (collectively, the "Boards") believe that the
Transaction will provide opportunities to achieve substantial benefits for the
respective shareholders and partners of the three companies. The Boards further
believe that the combined entities will be better and more quickly able to
capitalize on opportunities in the telecommunications industry, both
domestically and internationally, and be better positioned to compete
effectively in the rapidly changing telecommunications industry than any of the
entities on a stand-alone basis.
 
    The primary strategic advantages of the Transaction that were considered by
the Boards in reaching their determinations to recommend the Transaction were
(i) enhanced revenue opportunities from the integration of the existing fiber
and switching network infrastructure of each company, (ii) greater
organizational depth through the combination of the marketing, customer service
and networking strengths of Telecommunications with the technological, project
management and last mile distribution expertise of IWL, (iii) opportunities to
leverage the Partnership's fiber network by offering voice, data and
 
                                       23
<PAGE>
broadband services in markets geographically clustered along or near the
existing and planned infrastructure of the three companies, and (iv)
opportunities for international revenue growth through the combination of
Telecommunications' customer base, the Partnership's planned network and IWL's
relationships with numerous foreign regulators and communications providers.
 
    In addition to the joint reasons for the Transaction described above, in
reaching its determination to recommend the Transaction, the IWL Board
considered the benefits of obtaining access to the existing Partnership network,
which will enable IWL to avoid the cost, delay and management time commitment
required to build new network infrastructures.
 
    In addition to the joint reasons for the Transaction described above, in
reaching their determination to recommend the Transaction, the
Telecommunications Board and the General Partner Board considered the benefits
of being able to quickly access the public capital markets to help grow their
businesses, including to finance capital expenditures.
 
    For a more complete discussion of IWL's, Telecommunications' and the
Partnership's reasons for the Transaction, see "The Transaction--Reasons for the
Transaction."
 
OPINION OF FINANCIAL ADVISOR TO IWL
 
    On June 19, 1998, Cruttenden Roth delivered its written opinion to the IWL
Board to the effect that, as of such date and based on and subject to the
assumptions, limitations and qualifications set forth therein, from a financial
point of view, the relative exchange ratios were fair to the shareholders of
IWL. Cruttenden Roth subsequently updated such opinion by delivery of its
written opinion dated as of the date of this Joint Proxy Statement/Prospectus. A
copy of the Cruttenden Roth opinion, dated as of the date of this Joint Proxy
Statement/Prospectus, which sets forth the assumptions made and matters
considered by Cruttenden Roth in rendering its opinion, is attached as Appendix
II to this Joint Proxy Statement/ Prospectus. Holders of IWL Common Stock are
urged to read such opinion in its entirety. See "The Transaction--Fairness
Opinion of IWL Financial Advisor."
 
BOARD OF DIRECTORS AND MANAGEMENT OF HOLDINGS, IWL AND TELECOMMUNICATIONS
 
    It is expected that, following the consummation of the Transaction, the
Board of Directors of Holdings (the "Holdings Board") will consist of Ignatius
W. Leonards, Chairman of the IWL Board and a director of IWL, Byron M. Allen,
President and a director of IWL, Jere W. Thompson, Jr., President and a director
of Telecommunications, Mark Langdale, a director of Telecommunications, Timothy
W. Rogers, Executive Vice President and a director of Telecommunications, one
outside director designated by IWL (who will initially be Christopher J.
Amenson, a director of IWL) and one outside director designated by
Telecommunications (who will initially be John R. Harris).
 
    Following the consummation of the Transaction, Mr. Thompson will be Chief
Executive Officer and Chairman of the Board of Holdings, Mr. Leonards will be
President and Vice Chairman of the Board of Holdings, Kevin W. McAleer will be
Senior Vice President and Chief Financial Officer of Holdings (and is currently
serving in that position in anticipation of the Transaction), Byron M. Allen,
Scott L. Roberts, Timothy W. Rogers and Timothy M. Terrell each will be an
Executive Vice President of Holdings, and Richard H. Roberson will be
Controller, Treasurer and Secretary of Holdings. Messrs. Roberts, Rogers and Mr.
Terrell are currently Executive Vice Presidents and directors of
Telecommunications. Mr. Roberson is currently the Chief Financial Officer,
Secretary and a director of IWL.
 
    Holdings has entered, or prior to the Effective Time will enter, into new
employment agreements with, among other persons, each of Jere W. Thompson, Jr.,
Ignatius W. Leonards, Kevin W. McAleer, Byron M. Allen, Scott L. Roberts,
Timothy W. Rogers, Timothy M. Terrell and Richard H. Roberson (collectively, the
"Employment Agreements"). See "The Transaction--Interests of Certain Persons in
the Transaction--Employment Agreements."
 
                                       24
<PAGE>
ACCOUNTING TREATMENT
 
    IWL, Telecommunications and the Partnership expect that the Mergers and the
Interest Exchange will be accounted for using the pooling of interests method of
accounting. The pooling of interests method of accounting assumes that the
combining companies were merged from inception and the historical financial
statements for the periods prior to consummation of the Mergers and the Interest
Exchange are restated as though the companies had been combined from inception.
It is a condition to closing that IWL, Telecommunications and the Partnership
shall each have received from KPMG Peat Marwick LLP, their independent auditors,
letters, dated the date of or shortly prior to the Effective Date, stating its
opinion that the Mergers and the Interest Exchange qualify for
pooling-of-interests accounting treatment. See "The Transaction--Accounting
Treatment."
 
    The unaudited pro forma financial information contained in this Joint Proxy
Statement/Prospectus has been prepared using the pooling of interests accounting
method to account for the Mergers and the Interest Exchange. See "Unaudited Pro
Forma Condensed Combined Financial Statements."
 
CONDITIONS TO THE MERGERS
 
    The respective obligations of IWL, Telecommunications and the Partnership to
consummate the Mergers and the Interest Exchange are subject to the satisfaction
of certain conditions, including, among others, (a) receipt of material
regulatory approvals from the FCC and various state regulatory agencies in the
states of Texas, Louisiana, Arkansas and Oklahoma, (b) receipt of tax opinions
by each of Telecommunications, the Partnership and IWL from their respective
special tax counsel, (c) receipt by IWL of a regulatory opinion from
Telecommunications' and the Partnership's regulatory counsel, and by
Telecommunications and the Partnership of a regulatory opinion from IWL's
regulatory counsel, (d) receipt of letters by IWL, Telecommunications and the
Partnership from KPMG Peat Marwick LLP, their independent auditors, letters,
dated the date of or shortly prior to the Effective Time, stating its opinion
that the Mergers and the Interest Exchange qualify for pooling-of-interests
accounting treatment, and (e) the absence of any event that has had or could
reasonably be expected to have a Material Adverse Effect (as defined in the
Merger Agreement) on the other or on Holdings. The Transaction requires the
consent of the existing lenders to IWL, the Partnership and Telecommunications,
which consents have been obtained. See "The Merger Agreement--Certain
Conditions."
 
TERMINATION OF THE MERGER AGREEMENT; TERMINATION FEE
 
    The Merger Agreement may be terminated prior to the Effective Time under
certain circumstances by either IWL, Telecommunications or the Partnership if,
among other events, (a) the Mergers and the Interest Exchange are not
consummated on or before December 31, 1998 (the "Termination Date"), unless such
failure to consummate is caused solely by reason of the failure to obtain
certain regulatory approvals, in which case the Termination Date shall be
extended to February 16, 1999, (b) a court of competent jurisdiction or
governmental, regulatory or administrative agency or commission shall have
issued an order, decree or ruling or taken any other action in each case
permanently restraining, enjoining or otherwise prohibiting the Mergers or the
Interest Exchange; (c) another party shall have breached, or failed to comply
with, in any material respect, any of its obligations under the Merger Agreement
or any representation or warranty shall have been incorrect in any material
respect when made or shall have since ceased to be true and correct and such
breach, failure or incorrect representation or warranty shall have resulted or
be reasonably expected to result in a Material Adverse Effect on the other, (d)
a Material Adverse Effect or an event which could reasonably be expected to
result in a Material Adverse Effect on another party or on Holdings occurs, (e)
the Board of Directors of another party (or of the General Partner as the case
may be), or any committee thereof, withdraws or modifies in any adverse manner
its approval or recommendation of the Merger Agreement, the Mergers or the
Interest Exchange, (f) any of the required approvals of the shareholders or
partners, as the case may be, of another party shall fail to be obtained, or (g)
under certain situations and subject to certain conditions, prior to the
approval of the
 
                                       25
<PAGE>
Merger Agreement by the holders of common stock (or partnership interests, if
applicable) of the other party, the Board of Directors of the other party (or of
the General Partner as the case may be) determines in good faith that its
fiduciary obligations under applicable law require such action. See "The Merger
Agreement--Termination."
 
    Under certain circumstances, the Merger Agreement obligates IWL to pay to
Telecommunications and the Partnership a fee of $2.5 million in the aggregate if
the Merger Agreement is terminated (of which $1,875,000 is to be paid to
Telecommunications and $625,000 is to be paid to the Partnership) and under
certain circumstances obligates Telecommunications and the Partnership to pay to
IWL a fee of $2.5 million in the aggregate if the Merger Agreement is terminated
(of which $1,875,000 is to be paid by Telecommunications and $625,000 is to be
paid by the Partnership). See "The Merger Agreement--No Solicitation of
Transactions" and "The Merger Agreement--Termination Fee."
 
REGULATORY APPROVALS
 
    The Transaction is subject to review by the applicable state regulatory
authorities governing telecommunications services in each of the states in which
IWL, Telecommunications or the Partnership provides telephone service and to
receipt of the approval of the FCC. See "The Transaction--Regulatory Approvals."
 
CERTAIN UNITED STATES FEDERAL INCOME TAX CONSEQUENCES
 
    The Transaction has been structured to qualify as a nontaxable transaction
under the Internal Revenue Code of 1986, as amended (the "Code"), and the
obligations of each of IWL, Telecommunications and the Partnership under the
Merger Agreement are conditioned on the receipt by the parties thereto of
certain legal opinions described herein. It is a condition to the obligations of
IWL under the Merger Agreement that IWL receive an opinion (the "Munsch Hardt
Tax Opinion") from Munsch Hardt Kopf Harr & Dinan, P.C., counsel to IWL ("Munsch
Hardt"), to the effect that no gain or loss will be recognized by IWL or the
holders of IWL Common Stock in connection with the Mergers and that
Telecommunications and the Partnership receive the Hughes & Luce Tax Opinion (as
hereinafter defined). Likewise, it is a condition to the obligations of
Telecommunications and the Partnership under the Merger Agreement that
Telecommunications and the Partnership receive an opinion (the "Hughes & Luce
Tax Opinion") from Hughes & Luce, L.L.P., counsel to Telecommunications and the
Partnership ("Hughes & Luce"), to the effect that no gain or loss will be
recognized by Telecommunications or the Partnership or their respective holders
of common stock or Partnership Interests in connection with the Mergers and the
Interest Exchange and that IWL receive the Munsch Hardt Tax Opinion. For a
summary of the opinions of tax counsel as to the material United States federal
income tax consequences of the Transaction, see "The Transaction--Certain United
States Federal Income Tax Consequences of the Mergers" and "--Certain United
States Federal Income Tax Consequences of the Interest Exchange."
 
APPRAISAL RIGHTS
 
    The TBCA provides for certain appraisal rights for shareholders who do not
desire to participate in a merger of their corporation. These appraisal rights
are available for the shareholders of Telecommunications, but not for the
shareholders of IWL and not for the holders of Partnership Interests. See "The
Transaction--Appraisal Rights."
 
                                       26
<PAGE>
                                  RISK FACTORS
 
    SEE "RISK FACTORS" FOLLOWING THIS SUMMARY FOR A DISCUSSION OF CERTAIN
FACTORS THAT SHOULD BE CONSIDERED BY THE IWL SHAREHOLDERS AND TELECOMMUNICATIONS
SHAREHOLDERS IN EVALUATING WHETHER TO VOTE IN FAVOR OF THE MERGERS AND THE
LIMITED PARTNERS IN THE PARTNERSHIP WITH RESPECT TO THE INTEREST EXCHANGE.
 
                               THE PLAN PROPOSALS
 
THE EQUITY INCENTIVE PLAN
 
    The Equity Incentive Plan is intended to provide a means by which selected
employees of and consultants to Holdings may be given an opportunity to acquire
an equity interest in Holdings. Awards granted under the Equity Incentive Plan
("Awards") may consist of stock options, stock appreciation rights, restricted
stock, deferred stock, stock reload options and/or other stock-based awards.
Options granted under the Equity Incentive Plan may be either options that
qualify for treatment as "incentive stock options" under Section 422 of the Code
("Incentive Stock Options") or options that do not so qualify ("Nonqualified
Stock Options"). Stock options may be granted under the Equity Incentive Plan to
any person who is an officer or other employee (including, subject to certain
conditions, officers and employees who are also directors) of Holdings or any of
its subsidiaries. The exercise price of Incentive Stock Options must be at least
the fair market value of a share of Holdings Common Stock on the date of grant
(and not less than 110% of the fair market value in the case of an Incentive
Stock Option granted to an optionee owning 10% or more of Holdings Common
Stock). The exercise price of Nonqualified Stock Options may be less than 100%
of the fair market value of a share of Holdings Common Stock on the date of
grant. A total of 5,000,000 shares of Holdings Common Stock have been reserved
for issuance in satisfaction of Awards granted under the Equity Incentive Plan
and the maximum number of shares which may be issued to any participant pursuant
to Awards granted under the Equity Incentive Plan is 2,500,000.
 
THE DIRECTOR STOCK OPTION PLAN
 
    The Director Stock Option Plan is intended to encourage ownership of
Holdings by eligible non-employee directors of Holdings whose continued services
are considered essential to Holdings' future progress and to provide them with a
further incentive to remain as directors of Holdings. All options to be granted
under the Director Stock Option Plan will be Nonqualified Stock Options that
will not be eligible for treatment as Incentive Stock Options. The exercise
price per share of each option granted under the Director Stock Option Plan may
be less than 100% of the fair market value of Holdings Common Stock on the date
of grant. A total of 400,000 shares of Holdings Common Stock have been reserved
for issuance upon the exercise of options to be granted under the Director Stock
Option Plan.
 
    For a more detailed description of the Equity Incentive Plan and the
Director Stock Option Plan, see "The Plan Proposals."
 
    The adoption of each of the Equity Incentive Plan and the Director Stock
Option Plan has been unanimously approved by each of the IWL Board, the
Telecommunications Board, the General Partner Board and the Holdings Board, in
each case subject to the approval of the holders of IWL Common Stock,
Telecommunications Common Stock and the Partnership Interests. IWL, in its
capacity as the current sole shareholder of Holdings, has adopted and approved
the Equity Incentive Plan and the Director Stock Option Plan. The IWL Board
recommends that holders of IWL Common Stock vote FOR the approval of the Plan
Proposals, the Telecommunications Board recommends that holders of
Telecommunications Common Stock vote FOR the approval of the Plan Proposals and
the General Partner Board recommends that holders of Partnership Interests
execute and deliver their Contribution Agreements, which will, among other
things, consent to the adoption by Holdings of the Plan Proposals. See "The Plan
Proposals."
 
                                       27
<PAGE>
                      SUMMARY SELECTED UNAUDITED PRO FORMA
                       COMBINED CONDENSED FINANCIAL DATA
 
    The following unaudited pro forma balance sheet and income statement data of
Holdings illustrates the effect of the Transaction as if the Transaction had
occurred on March 31, 1998 for the pro forma balance sheet data and as of the
beginning of the period for the pro forma income statement data. In May 1998,
IWL changed its fiscal year end to coincide with the fiscal years of Holdings,
Telecommunications and the Partnership. Accordingly, the pro forma statement of
operations data for 1997 is presented for the 12 months ended December 31, 1997
on a combined basis for all three entities. The unaudited combined condensed
statement of operations data for the three-month period ended March 31, 1998 and
1997 combine the financial statements of IWL with those of Telecommunications
and the Partnership. The unaudited pro forma combined condensed statements of
operations for the years ended December 31, 1996 and 1995 combine IWL's
consolidated statements of operations data for the years ended June 30, 1996 and
1995 with the Telecommunications and Partnership statements of operations data
for the years ended December 31, 1996 and 1995. The revenue and net income of
IWL for the six month period ended December 31, 1996 was excluded from the pro
forma combined condensed statement of operations in the amounts of $15.6 million
and $260,000, respectively. The pro forma data is not necessarily indicative of
the results of operations or the financial condition that would have been
reported by Holdings had the Transaction been in effect during those periods, or
as of those dates, or that may be reported in the future. Pro forma combined per
share data of IWL, Telecommunications and the Partnership give effect to the
exchange of each share of IWL Common Stock for one share of Holdings Common
Stock, each share of Telecommunications Common Stock for 1.789030878 shares of
Holdings Common Stock, and each 1% of the Partnership Interests for 63,194.54
shares of Holdings Common Stock.
 
    This information should be read in conjunction with, and is qualified in its
entirety by, the consolidated financial statements of IWL, and the financial
statements of Telecommunications and the Partnership and the related notes
thereto included elsewhere herein and the Unaudited Pro Forma Combined Condensed
Financial Statements and the related notes thereto included elsewhere herein.
See "Unaudited Pro Forma Combined Condensed Financial Statements."
 
<TABLE>
<CAPTION>
                                                                                           THREE MONTHS ENDED
                                                             YEAR ENDED DECEMBER 31,           MARCH 31,
                                                         -------------------------------  --------------------
                                                           1995       1996       1997       1997       1998
                                                         ---------  ---------  ---------  ---------  ---------
                                                         (IN THOUSANDS, EXCEPT PER SHARE
                                                                      DATA)
<S>                                                      <C>        <C>        <C>        <C>        <C>
STATEMENTS OF OPERATIONS:
Revenues:
  Telecommunications services..........................  $  18,194  $  29,705  $  57,892  $  11,355  $  19,162
  Projects and other...................................     11,213     10,711     14,512      3,161      5,251
  Product resales(1)...................................     --         10,554      2,946      2,506     --
                                                         ---------  ---------  ---------  ---------  ---------
    Total revenues.....................................     29,407     50,970     75,350     17,022     24,413
Operating costs and expenses...........................     29,696     49,876     69,892     16,651     21,729
                                                         ---------  ---------  ---------  ---------  ---------
Operating income (loss)................................       (289)     1,094      5,458        371      2,684
Other income (expense).................................        150         41        220        114        (17)
Interest expense, net..................................       (484)      (585)    (1,603)      (368)      (433)
                                                         ---------  ---------  ---------  ---------  ---------
Income before income taxes and extraordinary item......       (623)       550      4,075        117      2,234
Income taxes...........................................         37        143      1,475          2        874
                                                         ---------  ---------  ---------  ---------  ---------
Income before extraordinary item.......................       (660)       407      2,600        115      1,360
Extraordinary item.....................................        645     --         --         --         --
                                                         ---------  ---------  ---------  ---------  ---------
Net income (loss)......................................  $     (15) $     407  $   2,600  $     115  $   1,360
                                                         ---------  ---------  ---------  ---------  ---------
                                                         ---------  ---------  ---------  ---------  ---------
Net income (loss) per share(2):
  Basic................................................  $  --      $    0.01  $    0.09  $  --      $    0.05
  Diluted..............................................  $  --      $    0.01  $    0.09  $  --      $    0.05
</TABLE>
 
                                       28
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                AT MARCH 31,
                                                                                                    1998
                                                                                                -------------
                                                                                                     (IN
                                                                                                 THOUSANDS)
<S>                                                 <C>        <C>        <C>        <C>        <C>
BALANCE SHEET DATA:
Cash and cash equivalents.........................                                                $   1,378
Working capital (deficit).........................                                                   (4,751)
Property and equipment, net.......................                                                   30,000
Total assets......................................                                                   54,335
Long-term debt and capital lease obligations,
  including current portion.......................                                                   13,044
Stockholders' equity..............................                                                   14,045
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                            THREE MONTHS ENDED
                                                             YEAR ENDED DECEMBER 31,            MARCH 31,
                                                         --------------------------------  --------------------
                                                           1995       1996        1997       1997       1998
                                                         ---------  ---------  ----------  ---------  ---------
                                                                  (IN THOUSANDS)
<S>                                                      <C>        <C>        <C>         <C>        <C>
OTHER DATA:
EBITDA(3)..............................................  $   1,691  $   2,670  $    9,023  $   1,118  $   3,730
Depreciation and amortization..........................      1,185      1,535       3,345        633      1,063
Cash flows provided by operations......................        827        781       3,177        426      2,235
Cash flows used in investing activities................     (1,919)    (9,350)    (12,051)    (2,140)    (7,408)
Cash flows provided by financing activities............        902      8,606      12,113     (2,623)       717
</TABLE>
 
- ------------------------
 
(1) Includes the resale of Alcatel products and other equipment and hardware to
    a subsidiary of Shell Oil Company ("Shell"). For the 12 months ended June
    30, 1996 and December 31, 1997, the Shell subsidiary purchased from Holdings
    approximately $10.6 million and $2.9 million of Alcatel products and other
    equipment and hardware. The Shell project was substantially completed in May
    1997 and, therefore, is not expected to contribute in a material manner to
    total sales in future periods.
 
(2) Net income (loss) per share amounts have been calculated in accordance with
    SFAS No. 128, "Earnings Per Share," for all periods presented.
 
(3) EBITDA consists of earnings before interest, income taxes, depreciation and
    amortization. EBITDA is a measure commonly used in the communications
    industry to analyze companies on the basis of operating performance. EBITDA
    is not a measure of financial performance under generally accepted
    accounting principles and should not be considered as an alternative to net
    income as a measure of performance nor as an alternative to cash flow as a
    measure of liquidity. See IWL's consolidated financial statements and the
    financial statements of Telecommunications and the Partnership included
    elsewhere in this Joint Proxy Statement/Prospectus. EBITDA for 1995 includes
    a $645,000 extraordinary gain on extinguishment of lease obligations. EBITDA
    is calculated as set forth below:
 
<TABLE>
<CAPTION>
                                                                                      THREE MONTHS ENDED
                                                       YEAR ENDED DECEMBER 31,            MARCH 31,
                                                   --------------------------------  --------------------
                                                     1995       1996        1997       1997       1998
                                                   ---------  ---------  ----------  ---------  ---------
                                                                       (IN THOUSANDS)
<S>                                                <C>        <C>        <C>         <C>        <C>
Net income (loss)................................  $     (15) $     407  $     2600  $     115  $    1360
Interest expense, net............................        484        585       1,603        368        433
Income tax expense...............................         37        143       1,475          2        874
Depreciation and amortization....................      1,185      1,535       3,345        633      1,063
                                                   ---------  ---------  ----------  ---------  ---------
EBITDA...........................................  $   1,691  $   2,670  $    9,023  $   1,118  $   3,730
                                                   ---------  ---------  ----------  ---------  ---------
                                                   ---------  ---------  ----------  ---------  ---------
</TABLE>
 
                                       29
<PAGE>
         SUMMARY SELECTED CONSOLIDATED HISTORICAL FINANCIAL DATA OF IWL
 
    The following selected consolidated historical financial data for each of
the four fiscal years ended June 30, 1997 and for the six months ended December
31, 1997, are derived from IWL's consolidated financial statements, which have
been audited by KPMG Peat Marwick LLP, independent certified public accountants,
whose report with respect to the three-year period ended June 30, 1997 appears
elsewhere herein. The following selected consolidated historical financial data
for the fiscal year ended June 30, 1993 are derived from IWL's unaudited
consolidated financial statements. The following selected consolidated
historical financial data for the six months ended December 31, 1996 and 1997
and for the three months ended March 31, 1997 and 1998 are derived from
unaudited consolidated financial statements of IWL which, in the opinion of
IWL's management, contain all adjustments (consisting only of normal recurring
adjustments) necessary for a fair presentation thereof. The results of
operations for an interim period are not necessarily indicative of the results
of operations to be expected for a full year. The data set forth below in this
table are qualified in their entirety by, and should be read in conjunction
with, the financial statements of IWL and the related notes thereto included
elsewhere herein and "Management's Discussion and Analysis of Financial
Condition and Results of Operations of IWL."
<TABLE>
<CAPTION>
                                                                                                                   THREE
                                                                                             SIX MONTHS ENDED     MONTHS
                                                                                                                   ENDED
                                                     YEAR ENDED JUNE 30,                       DECEMBER 31,      MARCH 31,
                                    -----------------------------------------------------  --------------------  ---------
                                      1993       1994       1995       1996       1997       1996       1997       1997
                                    ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                            (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                 <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
STATEMENTS OF OPERATIONS DATA:
Revenues:
  Telecommunications services.....  $   2,238  $   3,301  $   5,790  $   6,531  $   7,993  $   3,646  $   4,856  $   2,298
  Project and other...............     10,722     11,559     10,004     10,711     14,708      7,303      7,107      3,161
  Product resales(1)..............     --         --         --         10,554      7,641      4,695     --          2,506
                                    ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Total revenues................     12,960     14,860     15,794     27,796     30,342     15,644     11,963      7,965
Cost of revenues..................      8,641     10,071      9,639     20,416     21,737     11,684      6,557      5,674
                                    ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Gross profit......................      4,319      4,789      6,155      7,380      8,605      3,960      5,406      2,291
Operating expenses:
  Selling, general and
    administrative................      3,132      4,070      4,399      5,099      5,845      2,736      3,631      1,611
  Depreciation and amortization...        359        571        821      1,003      1,403        635        982        347
                                    ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Total operating expenses......      3,491      4,641      5,220      6,102      7,248      3,371      4,613      1,958
                                    ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Operating income..................        828        148        935      1,278      1,357        589        793        333
Interest expense, net.............        (10)      (215)      (244)      (270)      (514)      (214)      (218)      (125)
Other income (expense)............        (86)       252        139         42        129         19        110        114
                                    ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Income before income taxes........        732        185        830      1,050        972        394        685        322
Income taxes......................        249         41        294        316        283        134        264         95
                                    ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Net income........................  $     483  $     144  $     536  $     734  $     689  $     260  $     421  $     227
                                    ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                    ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
Earnings per share amounts(2):
  Basic...........................  $    0.24  $    0.07  $    0.24  $    0.33  $    0.30  $    0.12  $    0.11  $    0.10
  Diluted.........................  $    0.24  $    0.07  $    0.24  $    0.33  $    0.30  $    0.11  $    0.11  $    0.10
Weighted average shares
  outstanding:
  Basic...........................      2,000      2,001      2,222      2,222      2,298      2,226      3,737      2,234
  Diluted.........................      2,011      2,011      2,233      2,233      2,323      2,261      3,908      2,298
 
<CAPTION>
 
                                      1998
                                    ---------
 
<S>                                 <C>
STATEMENTS OF OPERATIONS DATA:
Revenues:
  Telecommunications services.....  $   2,804
  Project and other...............      5,251
  Product resales(1)..............     --
                                    ---------
    Total revenues................      8,055
Cost of revenues..................      4,421
                                    ---------
Gross profit......................      3,634
Operating expenses:
  Selling, general and
    administrative................      2,188
  Depreciation and amortization...        647
                                    ---------
    Total operating expenses......      2,835
                                    ---------
Operating income..................        799
Interest expense, net.............       (155)
Other income (expense)............          1
                                    ---------
Income before income taxes........        645
Income taxes......................        254
                                    ---------
Net income........................  $     391
                                    ---------
                                    ---------
Earnings per share amounts(2):
  Basic...........................  $    0.10
  Diluted.........................  $    0.09
Weighted average shares
  outstanding:
  Basic...........................      3,912
  Diluted.........................      4,199
</TABLE>
 
                                       30
<PAGE>
 
<TABLE>
<CAPTION>
                                                                       JUNE 30,
                                                 -----------------------------------------------------  DECEMBER 31,    MARCH 31,
                                                   1993       1994       1995       1996       1997         1997          1998
                                                 ---------  ---------  ---------  ---------  ---------  -------------  -----------
                                                                                  (IN THOUSANDS)
<S>                                              <C>        <C>        <C>        <C>        <C>        <C>            <C>
BALANCE SHEET DATA:
Cash and cash equivalents......................  $      72  $  --      $     291  $     361  $   7,660    $   3,345     $     720
Working capital (deficit)......................        709       (367)      (265)     1,811      9,721        1,330          (398)
Total assets...................................      5,748      7,437      8,232     12,409     26,062       26,284        29,834
Long-term debt and capital lease obligations,
  net of current portion.......................        533      1,108      1,329      2,944      7,692        3,588         3,948
Stockholders' equity...........................      1,511      2,419      2,955      3,698     11,394       12,166        14,135
</TABLE>
<TABLE>
<CAPTION>
                                                                                                                      THREE
                                                                                                SIX MONTHS ENDED     MONTHS
                                                                                                                      ENDED
                                                        YEAR ENDED JUNE 30,                       DECEMBER 31,      MARCH 31,
                                       -----------------------------------------------------  --------------------  ---------
                                         1993       1994       1995       1996       1997       1996       1997       1997
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                                           (IN THOUSANDS)
<S>                                    <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
OTHER DATA:
EBITDA(3)............................  $   1,101  $     971  $   1,895  $   2,323  $   2,889  $   1,243  $   1,885  $     794
Cash flows provided by (used in)
  operating activities(4)............                  (510)       696        341      2,545        334       (932)       502
Cash flows used in investing
  activities(4)......................                  (983)    (1,231)      (631)    (6,919)    (2,453)    (4,701)      (798)
Cash flows provided by financing
  activities(4)......................                 1,422        825        360     11,673      2,040      1,318        354
Capital expenditures(4)..............                 1,439      1,585      1,492      6,988      2,432      9,811      1,049
 
<CAPTION>
 
                                         1998
                                       ---------
 
<S>                                    <C>
OTHER DATA:
EBITDA(3)............................  $   1,447
Cash flows provided by (used in)
  operating activities(4)............        974
Cash flows used in investing
  activities(4)......................     (4,308)
Cash flows provided by financing
  activities(4)......................        704
Capital expenditures(4)..............      3,772
</TABLE>
 
- ------------------------------
 
(1) Comprised of the resale of Alcatel products and other equipment and hardware
    to a subsidiary of Shell.
 
(2) Earnings per share amounts have been calculated in accordance with SFAS No.
    128, "Earnings Per Share," in 1997 and 1998. Prior year amounts have been
    restated on a comparable basis.
 
(3) EBITDA consists of earnings before interest, income taxes, depreciation and
    amortization. EBITDA is a measure commonly used in the communications
    industry to analyze companies on the basis of operating performance. EBITDA
    is not a measure of financial performance under generally accepted
    accounting principles and should not be considered as an alternative to net
    income as a measure of performance nor as an alternative to cash flow as a
    measure of liquidity. EBITDA may not be comparable with other similarly
    titled measures of other companies. See IWL's consolidated financial
    statements and the notes thereto included elsewhere in this Joint Proxy
    Statement/Prospectus. EBITDA is calculated as set forth below:
<TABLE>
<CAPTION>
                                                                                                                        THREE
                                                                                                  SIX MONTHS ENDED     MONTHS
                                                                                                                        ENDED
                                                        YEAR ENDED DECEMBER 31,                     DECEMBER 31,      MARCH 31,
                                         -----------------------------------------------------  --------------------  ---------
                                           1993       1994       1995       1996       1997       1997       1998       1997
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                                             (IN THOUSANDS)
<S>                                      <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
Net income.............................  $     483  $     144  $     536  $     734  $     689  $     260  $     421  $     227
Interest expense, net..................         10        215        244        270        514        214        218        125
Income taxes...........................        249         41        294        316        283        134        264         95
Depreciation and amortization..........        359        571        821      1,003      1,403        635        982        347
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
EBITDA.................................  $   1,101  $     971  $   1,895  $   2,323  $   2,889  $   1,243  $   1,885  $     794
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------  ---------
 
<CAPTION>
 
                                           1998
                                         ---------
 
<S>                                      <C>
Net income.............................  $     391
Interest expense, net..................        155
Income taxes...........................        254
Depreciation and amortization..........        647
                                         ---------
EBITDA.................................  $   1,447
                                         ---------
                                         ---------
</TABLE>
 
(4) Cash flow and capital expenditures information for the fiscal year 1993 is
    not available.
 
                                       31
<PAGE>
        SUMMARY SELECTED HISTORICAL FINANCIAL DATA OF TELECOMMUNICATIONS
 
    The following selected historical financial data for Telecommunications for
the years ended and as of December 31, 1993 and 1994 have been derived from the
unaudited financial statements of Telecommunications. The financial data for the
years ended and as of December 31, 1995 and 1996 have been derived from
Telecommunications' financial statements and related notes which have been
audited by Burds, Reed & Mercer, P.C., independent certified public accountants.
The financial data for the year ended and as of December 31, 1997 have been
derived from Telecommunications' financial statements and related notes which
have been audited by KPMG Peat Marwick LLP, independent certified public
accountants. The financial data for the three months ended March 31, 1997 and
1998 are derived from unaudited financial statements of Telecommunications,
which in the opinion of Telecommunication's management, contain all adjustments
(consisting only of normal recurring adjustments) necessary for a fair
presentation thereof. The results of operations for an interim period are not
necessarily indicative of the results of operations to be expected for a full
year. The data set forth below in this table are qualified in their entirety by,
and should be read in conjunction with, the financial statements of
Telecommunications and the related notes thereto and "Management's Discussion
and Analysis of Financial Condition and Results of Operations of
Telecommunications."
 
<TABLE>
<CAPTION>
                                                                                                 THREE MONTHS ENDED
                                                        YEAR ENDED DECEMBER 31,                      MARCH 31,
                                         -----------------------------------------------------  --------------------
                                           1993       1994       1995       1996       1997       1997       1998
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                            (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                      <C>        <C>        <C>        <C>        <C>        <C>        <C>
STATEMENTS OF OPERATIONS DATA:
Total revenues.........................  $     526  $   5,965  $  13,440  $  23,174  $  46,745  $   8,697  $  15,770
Cost of revenues.......................         39      4,780     11,043     18,941     35,776      7,118     11,802
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------
Gross profit...........................        487      1,185      2,397      4,233     10,969      1,579      3,968
Operating expenses:
  Selling, general and
    administrative.....................        426      1,038      2,601      3,711      7,049      1,487      2,176
  Depreciation and amortization........          4         10        333        478        694        142        231
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------
  Total operating expenses.............        430      1,048      2,934      4,189      7,743      1,629      2,407
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------
Operating income (loss)................         57        137       (537)        44      3,226        (50)     1,561
Interest expense.......................     --             (9)      (240)      (315)      (311)       (78)       (86)
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------
Income (loss) before income taxes......         57        128       (777)      (271)     2,915       (128)     1,475
Income taxes (benefit).................          3         36       (245)       (88)     1,100        (65)       578
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------
Net income (loss)......................  $      54  $      92  $    (532) $    (183) $   1,815  $     (63) $     897
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------
Earnings (loss) per common share(1):
  Basic................................  $    0.01  $    0.01  $   (0.05) $   (0.02) $    0.17  $   (0.01) $    0.09
  Diluted..............................  $    0.01  $    0.01  $   (0.05) $   (0.02) $    0.17  $   (0.01) $    0.08
</TABLE>
 
<TABLE>
<CAPTION>
                                                                          DECEMBER 31,                        MARCH 31,
                                                      -----------------------------------------------------  -----------
                                                        1993       1994       1995       1996       1997        1998
                                                      ---------  ---------  ---------  ---------  ---------  -----------
                                                                                (IN THOUSANDS)
<S>                                                   <C>        <C>        <C>        <C>        <C>        <C>
BALANCE SHEET DATA:
Working capital (deficit)...........................  $      37  $     104  $    (533) $  (1,348) $    (576)  $     (38)
Property and equipment, net.........................         34        118      2,214      2,858      3,693       4,162
Total assets........................................        111      1,716      4,953      7,356     13,327      14,552
Long-term debt and capital lease obligations, net of
  current portion...................................          3        113      1,114        720        453         431
Stockholders' equity (deficit)......................         (3)       375        593        411      2,247       3,165
</TABLE>
 
                                       32
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                          THREE MONTHS ENDED
                                                                 YEAR ENDED DECEMBER 31,                      MARCH 31,
                                                  -----------------------------------------------------  --------------------
                                                    1993       1994       1995       1996       1997       1997       1998
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                                                (IN THOUSANDS)
<S>                                               <C>        <C>        <C>        <C>        <C>        <C>        <C>
OTHER DATA:
EBITDA(2).......................................  $      61  $     147  $    (204) $     522  $   3,920  $      92  $   1,792
Cash flows provided by (used in) operating
  activities....................................         48       (312)       296        513      2,091        (73)       177
Cash flows used in investing activities.........        (31)      (366)      (696)    (1,118)    (1,500)      (148)      (612)
Cash flows provided by (used in) financing
  activities....................................          4        997         77        580       (589)       221        433
Capital expenditures............................         31        366        696      1,118      1,500        148        612
</TABLE>
 
- ------------------------
 
(1) Earnings (loss) per share amounts have been calculated in accordance with
    SFAS No. 128, "Earnings Per Share," in 1997. Prior year amounts have been
    restated on a comparable basis.
 
(2) EBITDA consists of earnings before interest, income taxes, depreciation and
    amortization. EBITDA is a measure commonly used in the communications
    industry to analyze companies on the basis of operating performance. EBITDA
    is not a measure of financial performance under generally accepted
    accounting principles and should not be considered as an alternative to net
    income as a measure of performance nor as an alternative to cash flow as a
    measure of liquidity. EBITDA may not be comparable with other similarly
    titled measures of other companies. See Telecommunications' financial
    statements and the notes thereto included elsewhere in this Joint Proxy
    Statement/Prospectus. EBITDA is calculated as set forth below:
 
<TABLE>
<CAPTION>
                                                                                                                 THREE MONTHS ENDED
                                                                       YEAR ENDED DECEMBER 31,                       MARCH 31,
                                                       -------------------------------------------------------  --------------------
                                                          1993        1994       1995       1996       1997       1997       1998
                                                          -----     ---------  ---------  ---------  ---------  ---------  ---------
                                                                           (IN THOUSANDS)
<S>                                                    <C>          <C>        <C>        <C>        <C>        <C>        <C>
Net income (loss)....................................   $      54   $      92  $    (532) $    (183) $   1,815  $     (63) $     897
Interest expense, net................................      --               9        240        315        311         78         86
Income taxes (benefit)...............................           3          36       (245)       (88)     1,100        (65)       578
Depreciation and amortization........................           4          10        333        478        694        142        231
                                                              ---   ---------  ---------  ---------  ---------  ---------  ---------
EBITDA...............................................   $      61   $     147  $    (204) $     522  $   3,920  $      92  $   1,792
                                                              ---   ---------  ---------  ---------  ---------  ---------  ---------
                                                              ---   ---------  ---------  ---------  ---------  ---------  ---------
</TABLE>
 
                                       33
<PAGE>
         SUMMARY SELECTED HISTORICAL FINANCIAL DATA OF THE PARTNERSHIP
 
    The following selected historical financial data for the Partnership for the
years ended and as of December 31, 1993, 1994, 1995 and 1996 have been derived
from the Partnership's financial statements and related notes which have been
audited by Burds, Reed & Mercer, P.C., independent certified public accountants.
The financial data for the year ended and as of December 31, 1997 have been
derived from the Partnership's financial statements and related notes which have
been audited by KPMG Peat Marwick LLP, independent certified public accountants.
The financial data for the three months ended March 31, 1997 and 1998 are
derived from unaudited financial statements of the Partnership, which in the
opinion of the Partnership's management, contain all adjustments (consisting
only of normal recurring adjustments) necessary for a fair presentation thereof.
The results of operations for an interim period are not necessarily indicative
of the results of operations to be expected for a full year. The data set forth
below in this table are qualified in their entirety by, and should be read in
conjunction with, the financial statements of the Partnership and the related
notes thereto and "Management's Discussion and Analysis of Financial Condition
and Results of Operations of the Partnership."
 
<TABLE>
<CAPTION>
                                                                                                              THREE MONTHS ENDED
                                                                     YEAR ENDED DECEMBER 31,                      MARCH 31,
                                                      -----------------------------------------------------  --------------------
                                                        1993       1994       1995       1996       1997       1997       1998
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                                         (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                   <C>        <C>        <C>        <C>        <C>        <C>        <C>
STATEMENTS OF OPERATIONS DATA:
Revenues:
  Telecommunications services.......................  $  --      $  --      $  --      $  --      $   1,945  $     360  $     588
  Projects and other................................        240        334        173     --         --         --         --
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Total revenues..................................        240        334        173     --          1,945        360        588
Operating expenses:
  Network access expenses...........................     --            444        503     --             86         41         12
  Selling, general and administrative...............        245        457        326        174        286         65         67
  Depreciation and amortization.....................         18         50         31         54        902        166        185
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Total operating costs and expenses..............        263        951        860        228      1,274        272        264
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
Operating income (loss).............................        (23)      (617)      (687)      (228)       671         88        324
Interest expense....................................     --         --         --         --           (774)      (165)      (210)
Other income (expense)..............................         15          4         12     --             (1)    --         --
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
Income (loss) before income taxes and extraordinary
  item..............................................         (8)      (613)      (675)      (228)      (104)       (77)       114
Income taxes(1).....................................     --         --         --         --         --         --            (42)
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
Income (loss) before extraordinary item.............         (8)      (613)      (675)      (228)      (104)       (77)        72
Extraordinary item (2)..............................     --         --            645     --         --         --         --
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
Net income (loss)...................................  $      (8) $    (613) $     (30) $    (228) $    (104) $     (77) $      72
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                DECEMBER 31,                         MARCH 31,
                                                           -------------------------------------------------------  -----------
                                                             1993       1994        1995        1996       1997        1998
                                                           ---------  ---------     -----     ---------  ---------  -----------
                                                                                      (IN THOUSANDS)
<S>                                                        <C>        <C>        <C>          <C>        <C>        <C>
BALANCE SHEET DATA:
Working capital (deficit)................................  $     497  $    (178)  $       1   $  (2,616) $  (1,059)  $  (1,314)
Property and equipment, net..............................        239        206      --           8,552      9,300       9,168
Total assets.............................................        788        443          13       8,757      9,779       9,949
Long-term debt and capital lease obligations, net of
  current portion........................................     --         --          --           6,336      8,665       8,665
Partners' capital (deficit)..............................        742         34           4        (223)      (327)       (255)
</TABLE>
 
                                       34
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                        THREE MONTHS ENDED
                                                               YEAR ENDED DECEMBER 31,                      MARCH 31,
                                                -----------------------------------------------------  --------------------
                                                  1993       1994       1995       1996       1997       1997       1998
                                                ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                                              (IN THOUSANDS)
<S>                                             <C>        <C>        <C>        <C>        <C>        <C>        <C>
OTHER DATA:
EBITDA(3).....................................  $      10  $    (563) $       1  $    (174) $   1,572  $     254  $     509
  Cash flows provided by (used in) operating
    activities................................       (444)       229       (165)       (73)      (194)        (3)       992
  Cash flows provided by (used in) investing
    activities................................       (256)       (17)         8     (7,665)    (1,384)    (1,195)       (31)
  Cash flows provided by (used in) financing
    activities................................        750        (95)    --          7,639      1,751      2,048       (476)
  Capital expenditures........................        256         17          8      7,601      1,384      1,195         31
</TABLE>
 
- ------------------------
 
(1) Effective January 1, 1998, the Partnership elected to be taxed as a
    corporation and as such has recorded income taxes of $42,000 relating to the
    three months ended March 31, 1998. Prior to January 1, 1998, the Partnership
    allocated net income and net losses to its Partnership Interests and
    therefore no income taxes were recorded for periods ended prior to January
    1, 1998.
 
(2) Extraordinary gain of approximately $645,000 relates to extinguishment of
    certain lease obligations in 1995.
 
(3) EBITDA consists of earnings before interest, income taxes, depreciation and
    amortization. EBITDA is a measure commonly used in the communications
    industry to analyze companies on the basis of operating performance. EBITDA
    is not a measure of financial performance under generally accepted
    accounting principles and should not be considered as an alternative to net
    income as a measure of performance nor as an alternative to cash flow as a
    measure of liquidity. EBITDA may not be comparable with other similarly
    titled measures of other companies. See the Partnership's financial
    statements and the notes thereto included elsewhere in this Joint Proxy
    Statement/Prospectus. EBITDA is calculated as set forth below.
 
<TABLE>
<CAPTION>
                                                                                                                 THREE MONTHS ENDED
                                                                       YEAR ENDED DECEMBER 31,                       MARCH 31,
                                                       -------------------------------------------------------  --------------------
                                                          1993        1994       1995       1996       1997       1997       1998
                                                          -----     ---------  ---------  ---------  ---------  ---------  ---------
                                                                           (IN THOUSANDS)
<S>                                                    <C>          <C>        <C>        <C>        <C>        <C>        <C>
  Net income (loss)..................................   $      (8)  $    (613) $     (30) $    (228) $    (104) $     (77) $      72
  Interest expense...................................      --          --         --         --            774        165        210
  Income taxes.......................................      --          --         --         --         --         --             42
  Depreciation and amortization......................          18          50         31         54        902        166        185
                                                               --
                                                                    ---------        ---  ---------  ---------  ---------  ---------
  EBITDA.............................................   $      10   $    (563) $       1  $    (174) $   1,572  $     254  $     509
                                                               --
                                                               --
                                                                    ---------        ---  ---------  ---------  ---------  ---------
                                                                    ---------        ---  ---------  ---------  ---------  ---------
</TABLE>
 
                                       35
<PAGE>
                       COMPARATIVE PER SHARE INFORMATION
 
    The following table sets forth, for the periods indicated, selected pro
forma per share amounts for Holdings Common Stock, pro forma per share
equivalent amounts for Telecommunications Common Stock, pro forma per one
percent equivalent amounts for Partnership Interests, giving effect to the
Transaction, and the corresponding historical per share data for IWL Common
Stock, Telecommunications Common Stock and historical data for each one percent
Partnership Interest in the Partnership. Net income per share data is computed
using diluted share information. The information presented is based upon, and is
qualified in its entirety by, the Consolidated Financial Statements and the
related notes thereto of IWL and the Financial Statements and related notes
thereto of Telecommunications and the Partnership included elsewhere herein.
These data are not necessarily indicative of the results of the future
operations of Holdings or the actual results that would have occurred if the
Transaction had been consummated prior to the periods indicated. See "Unaudited
Pro Forma Combined Condensed Financial Statements."
 
<TABLE>
<CAPTION>
                                                                                                     THREE MONTHS
                                                              AS OF OR FOR THE YEAR ENDED DECEMBER   ENDED MARCH
                                                                               31,                       31,
                                                              -------------------------------------  ------------
                                                                 1995        1996          1997          1998
                                                              ----------  -----------  ------------  ------------
<S>                                                           <C>         <C>          <C>           <C>
UNAUDITED PRO FORMA COMBINED(1)
Net income (loss) per share--diluted........................  $   --      $      0.01  $       0.09  $       0.05
Book value per share........................................                                         $       0.49
TELECOMMUNICATIONS PER SHARE EQUIVALENTS(2)
Net income (loss) per share--diluted........................  $   --      $      0.03  $       0.16  $       0.08
Book value per share........................................                                         $       0.87
PARTNERSHIP ONE PERCENT EQUIVALENTS(3)
Net income (loss) per one percent interest..................  $   (36.55) $    947.09  $   5,785.62  $   2,951.19
Book deficit per one percent interest.......................                                         $  30,720.18
IWL HISTORICAL(4)
Net income per share--diluted...............................  $     0.24  $      0.33  $       0.30  $       0.08
Book value per share........................................                                         $       3.56
TELECOMMUNICATIONS HISTORICAL
Net income (loss) per share.................................  $    (0.05) $     (0.02) $       0.17  $       0.09
Book value per share........................................                                         $       0.30
PARTNERSHIP HISTORICAL
Net loss per one percent interest...........................  $  (301.61) $ (2,274.03) $  (1,037.98) $     716.40
Book deficit per one percent interest.......................                                         $  (2,552.98)
</TABLE>
 
- ------------------------
 
(1) The pro forma IWL per share equivalents are equal to the Unaudited Pro Forma
    Combined per share amounts as the exchange ratio of IWL Common Stock to
    Holdings Common Stock is 1 to 1.
 
(2) The Telecommunications Per Share Equivalents were calculated by multiplying
    the Unaudited Pro Forma Combined per share amounts by the Telecommunications
    Exchange Ratio to reflect the exchange of 1.789030878 shares of Holdings
    Common Stock for each share of Telecommunications Common Stock pursuant to
    the Merger Agreement.
 
(3) The Partnership One Percent Equivalents were calculated by multiplying the
    Unaudited Pro Forma Combined per share amounts by the Partnership Exchange
    Ratio to reflect the exchange of 63,194.54 shares of Holdings Common Stock
    for each one percent (1%) of the Partnership Interests pursuant to the
    Merger Agreement.
 
                                       36
<PAGE>
(4) The IWL historical net income per share amounts are presented for the years
    ended June 30, 1995 and 1996 and for the twelve months ended December 31,
    1997 to correspond with the periods used to prepare the unaudited pro forma
    combined condensed financial statements.
 
                 COMPARATIVE PER SHARE MARKET PRICE INFORMATION
 
    IWL Common Stock is listed on the Nasdaq National Market under the trading
symbol "IWLC." On February 12, 1998, the last full trading day prior to the
public announcement of the proposed Mergers, the closing price of IWL Common
Stock on the Nasdaq National Market was $9.875 per share. On            , 1998,
the most recent practicable date prior to the mailing of this Joint Proxy
Statement/ Prospectus, the closing price of IWL Common Stock on the Nasdaq
National Market was $      per share. Holders of IWL Common Stock are urged to
obtain current market quotations of the IWL Common Stock prior to making any
decision with respect to the Mergers. There has previously been no public market
for the shares of Telecommunications Common Stock or Partnership Interests. See
"Comparative Per Share Market Price and Dividend Information."
 
                        LISTING OF HOLDINGS COMMON STOCK
 
    Holdings intends to apply for listing of the Holdings Common Stock on the
Nasdaq National Market and anticipates that its shares will trade on the Nasdaq
National Market, upon official notice of issuance, under the symbol "CPRK."
There has previously been no public market for the shares of Holdings Common
Stock. See "The Transaction--Stock Exchange Listing."
 
                                DIVIDEND POLICY
 
    Holdings currently intends to retain all future earnings for use in the
operation of its business and, therefore, does not anticipate paying any cash
dividends in the foreseeable future. The declaration and payment in the future
of any cash dividends will be at the discretion of the Holdings Board and will
depend upon, among other factors, the earnings, capital requirements and
financial position of Holdings, existing and/or future covenants contained in
Holdings' bank credit agreements or other financing documents and general
economic conditions. IWL has not paid any dividends to date. Telecommunications
has not paid any dividends to date. The Partnership made a one time,
extraordinary distribution in April 1994 to its partners, but otherwise has not
paid any distributions to date.
 
                                       37
<PAGE>
                                  RISK FACTORS
 
    THIS SECTION DESCRIBES CERTAIN RISK FACTORS THAT SHOULD BE CONSIDERED BY THE
IWL SHAREHOLDERS AND TELECOMMUNICATIONS SHAREHOLDERS IN EVALUATING WHETHER TO
VOTE IN FAVOR OF THE MERGERS AND THE LIMITED PARTNERS IN THE PARTNERSHIP WITH
RESPECT TO THE INTEREST EXCHANGE, AND INCLUDES SUCH RISK FACTORS FOR THE
COMBINED BUSINESSES OF IWL, TELECOMMUNICATIONS AND THE PARTNERSHIP AS WELL AS
RISK FACTORS THAT RELATE ONLY TO EITHER TELECOMMUNICATIONS, IWL OR THE
PARTNERSHIP.
 
FIXED EXCHANGE RATIO
 
    The IWL Exchange Ratio, Telecommunications Exchange Ratio and Partnership
Exchange Ratio are expressed as fixed ratios in the Merger Agreement. The Merger
Agreement does not contain any provisions for adjustment of the IWL Exchange
Ratio, the Telecommunications Exchange Ratio or the Partnership Exchange Ratio
based upon fluctuations in the market price of IWL Common Stock. Accordingly,
the value of the stock consideration to be received by holders of IWL Common
Stock, Telecommunications Common Stock and Partnership Interests upon the
consummation of the Mergers and the Interest Exchange, as determined by
reference to the market price of the IWL Common Stock on the Nasdaq National
Market, is not presently ascertainable and will depend upon the market price of
Holdings Common Stock at the Effective Time, which in turn will be affected by,
among other factors, the market price of IWL Common Stock immediately prior to
the Effective Time and the value of the business of Telecommunications and the
Partnership at the Effective Time. The exchange ratio was initially determined
on February 16, 1998, which is also the date prior to the date the Mergers were
announced. On February 12, 1998, the most recent day in which trading occurred
in the stock of IWL prior to such date, the closing price of IWL's stock on the
Nasdaq National Market was $9 7/8 per share. The exchange ratio was recalculated
on June 20, 1998. From February 17, 1998 until June 19, 1998, the date prior to
the date the exchange ratio was recalculated, the highest and lowest closing
prices of IWL's stock were $22.375 per share and $11.75 per share, respectively.
From June 20, 1998, through June   , 1998, the highest and lowest closing prices
of IWL's stock were $      per share and $      per share, respectively. On June
  , 1998, the most recent practicable date prior to the mailing of this Joint
Proxy Statement/ Prospectus, the closing price of IWL Common Stock on the Nasdaq
National Market was $      per share. These variations may result from changes
in the business, operations or prospects of IWL, Telecommunications or the
Partnership, market assessment of the Transaction, general economic conditions
or other factors. The IWL Common Stock is the only publicly traded security of
the parties to the Transaction and it has a one for one exchange ratio for the
Holdings Common Stock. As the market value of the shares of IWL Common Stock
increases or decreases, the value (and not the number of such shares of stock)
to be received by the shareholders or partners of IWL, Telecommunications or the
Partnership, as applicable, will also increase or decrease. Holders of IWL
Common Stock, Telecommunications Common Stock and Partnership Interests are
urged to obtain current market quotations prior to making any decision with
respect to the Mergers and the Interest Exchange. There has previously been no
public market for the shares of Holdings Common Stock, Telecommunications Common
Stock or the Partnership Interests. The Merger Agreement provides that
fluctuations in the price of IWL Common Stock shall be deemed to be an event
that does not have a Material Adverse Effect (as defined in the Merger
Agreement) on any other party or on Holdings.
 
SUBSTANTIAL INDEBTEDNESS; RESTRICTIVE COVENANTS
 
    It is expected that after the date of this Joint Proxy Statement/Prospectus
and prior to the Effective Time, Holdings, Telecommunications and the
Partnership (with IWL as a guarantor of certain obligations with respect to the
Proposed Notes) will offer, through a private placement under Rule 144A under
the Securities Act, the Proposed Notes, although there is no assurance that the
Proposed Notes will, in fact, be offered or, if offered, will be sold. Holdings
currently expects that the aggregate principal amount of the certain obligations
with respect to the Proposed Notes to be offered will be approximately
$150,000,000,
 
                                       38
<PAGE>
but may be more or less. As a result of the issuance of the Proposed Notes (the
"Proposed Offering"), Holdings will be highly leveraged. At March 31, 1998, on a
pro forma basis after giving effect to the consummation of the Transaction and
the Proposed Offering and the application of the net proceeds therefrom,
Holdings would have had total consolidated indebtedness of $150 million before
the costs of the Transaction and the Proposed Offering (or approximately 92% of
the total capitalization of Holdings) and the total liabilities of Holdings
(including trade accounts payable and accrued liabilities) would have been
approximately $168.6 million. The degree to which Holdings is leveraged may
adversely affect Holdings' ability to finance its future operations, to compete
effectively against better capitalized companies, to be flexible in planning
for, or reacting to, changes in its business, to withstand downturns in its
business or the economy generally, and to pursue business opportunities that may
be in the best interests of Holdings.
 
    The successful implementation of Holdings' strategy, including expansion of
its network, increase in its sales force and obtaining and retaining a
significant number of customers in order to generate significant and sustained
growth in Holdings' cash flow, will be necessary for Holdings to be able to meet
its debt service requirements, including its obligations under the Proposed
Notes. There can be no assurance that Holdings will successfully implement its
strategy or that Holdings will be able to generate sufficient cash flow from
operating activities to meet its debt service obligations and working capital
requirements. In the event the implementation of Holdings' strategy is delayed
or is unsuccessful or Holdings does not generate sufficient cash flow to meet
its debt service and working capital requirements, Holdings may need to seek
additional financing. There can be no assurance that any such financing could be
obtained on terms that are acceptable to Holdings, or at all. In the absence of
such financing, Holdings could be forced to dispose of assets in order to make
up for any shortfall in the payments due on its indebtedness under circumstances
that might not be favorable to realizing the highest price for such assets. As a
result, there can be no assurance that Holdings' assets could be sold quickly
enough or for sufficient amounts to enable Holdings to meet its obligations,
including its obligations with respect to the Proposed Notes.
 
    Holdings is currently negotiating with a lender to obtain a senior credit
facility (the "Credit Facility") which the Company expects will become available
upon consummation of the Transaction. The Credit Facility and the Indenture (as
defined below) will impose operating and financial restrictions on Holdings and
its subsidiaries. These restrictions will affect, and in certain cases
significantly limit or prohibit, among other things, the ability of Holdings and
its subsidiaries to incur additional indebtedness, create liens upon assets,
apply the proceeds from the disposal of assets, make investments, make dividend
payments and other distributions on capital stock (other than to Holdings) and
redeem capital stock. In addition, the Credit Facility is expected to require
Holdings to maintain certain financial ratios and meet certain financial
covenants relating to Holdings. There can be no assurance that Holdings will be
able to maintain such ratios or that such covenants will not adversely affect
Holdings' ability to finance its future operations or capital needs or to engage
in other business activities that may be in the best interest of Holdings.
 
HOLDING COMPANY STRUCTURE; STRUCTURAL SUBORDINATION
 
    Holdings is a holding company with no direct operations and no significant
assets other than its direct and indirect ownership interests in the
Subsidiaries. Upon completion of the Transaction, the Proposed Notes will be
general unsecured obligations of Holdings and will rank pari passu in right of
payment with all future senior indebtedness of Holdings, if any, and senior in
right of payment to all future subordinated indebtedness of Holdings, if any.
Holdings does not currently have any other existing debt other than debt of the
Subsidiaries. Each of Holdings' Subsidiaries is a separate legal entity that
upon completion of the Transaction has no obligation to pay any amounts that may
be due pursuant to the Proposed Notes (if the offering thereof is completed) or
to make any funds available therefor, whether by dividends, loans or other
payments. Because upon completion of the Transaction the Proposed Notes will not
be guaranteed by the Subsidiaries, all indebtedness of the Subsidiaries,
including the Subsidiaries' borrowings under the
 
                                       39
<PAGE>
Credit Facility and trade payables, will be structurally senior to the Proposed
Notes. In addition, Holdings may be required to pledge the stock of
Telecommunications and IWL, its direct wholly owned Subsidiaries, to secure the
borrowings under the Credit Facility and other vendor financing and the
Subsidiaries and any other subsidiaries will grant liens on substantially all of
their assets as security for the obligations under the Credit Facility. In the
event of any dissolution, bankruptcy or liquidation or reorganization of the
Subsidiaries, the right of Holdings to receive assets of the Subsidiaries upon
such liquidation or reorganization (and the consequent right of holders of the
Proposed Notes to participate in the distribution or realize proceeds from those
assets) will be effectively subordinated to the claims of the Subsidiaries'
creditors (including trade creditors and holders of other indebtedness of such
Subsidiaries) except if and to the extent Holdings is itself a creditor of such
Subsidiary, in which case the claims of Holdings would still be effectively
subordinated to any security interest in the assets of such Subsidiary held by
other creditors. As of March 31, 1998, after giving effect to the Transaction
and the Proposed Offering, the Subsidiaries would have had $18.6 million of
total outstanding liabilities (excluding intercompany payables and the Proposed
Notes), all of which would have been structurally senior to the Proposed Notes.
See "Unaudited Pro Forma Combined Condensed Financial Statements." Holdings is
dependent on the cash flow of the Subsidiaries to meet its obligations,
including the payment of interest and principal obligations on the Proposed
Notes when due. Accordingly, Holdings' ability to make principal, interest and
other payments to holders of the Proposed Notes when due will be dependent on
the receipt of sufficient funds from the Subsidiaries. Receipt of such funds
will be restricted by the terms of existing and future indebtedness of the
Subsidiaries, including the Credit Facility.
 
MANAGING RAPID CHANGE; INTEGRATION OF COMBINED BUSINESSES
 
    IWL, Telecommunications and the Partnership each have experienced a recent
period of significant growth and expansion that has placed, and if sustained
would continue to place, a significant strain on their respective
administrative, operational and financial resources. This growth has resulted in
an increase in the level of responsibility for management personnel. The
Transaction is intended in part to help fuel additional growth and expansion,
which could add additional strain on Holdings' resources and increase demands on
its systems and controls. Holdings' ability to continue to manage its growth
successfully will require Holdings to enhance its operational, management,
financial and information systems and controls and to hire and retain qualified
sales, marketing, administrative, operating and technical personnel. There can
be no assurance that Holdings will be able to do so.
 
    The Transaction involves the integration of three companies which will
impose many risks on Holdings, including risks associated with assimilating the
operations, services, products and personnel of the three companies. No
assurance can be given that Holdings will not encounter significant difficulties
in integrating the respective operations of IWL, Telecommunications and the
Partnership or that the benefits and revenue growth expected from such
integration will be realized. The achievement of the benefits and revenue growth
expected from such integration will require Holdings to, among other things,
access significant amounts of growth capital, to complete successfully the
approximately 4,300 route mile fiber network planned by the Partnership, to
provide cost-effective services in many new markets, to expand rapidly its sales
force and customer service department, to introduce new data products as they
become available, and in regards to the Transaction, to incur significant costs
in connection with the integration of IWL's, Telecommunications' and the
Partnership's operations, financial reporting and accounting systems, and
networks, as well as other costs relating to transitional planning and
implementation. The incurrence of any such costs, as well as any unexpected
costs or delays in connection with such integration, could have a material
adverse effect on Holdings' financial condition, results of operations and cash
flow.
 
SIGNIFICANT CAPITAL REQUIREMENTS
 
    Following the Transaction, the expansion of Holdings' fiber network, the
installation of additional switches, the opening of new sales offices, the
recruiting and training of new personnel, additional and
 
                                       40
<PAGE>
increased marketing expenses and other expenses related to Holdings' growth will
require substantial capital and operating funds. Holdings currently estimates
that its aggregate capital expenditure requirements will total approximately $50
million during the second half of 1998 and $140 million for 1999. Holdings
anticipates making substantial capital expenditures thereafter. Capital
expenditures and working capital will be required to (i) fund the construction
and operation of the fiber optic network, (ii) fund the installation of voice
and data switches, and (iii) open sales offices and add sales support and
customer service personnel in markets throughout Texas and the Gulf Coast
region. Holdings believes that the estimated net proceeds from the offering of
the Proposed Notes, together with cash flow from operations, borrowings under
the Credit Facility which Holdings is currently negotiating with a bank lender
and vendor financing, will provide sufficient funds to enable Holdings to fund
its capital expenditures and working capital requirements for the next 18
months. No assurance can be given, however, as to when and if Holdings will
enter into the Credit Facility or any other substitute senior credit facility or
as to the amount or terms of the Credit Facility or any other substitute credit
facility. Additional capital will be required after such time to finance
additional expansion of Holdings network. There can be no assurance that the
offering of the Proposed Notes will be successful, or if successful, as to the
terms and conditions thereof.
 
    The actual amount and timing of Holdings' future capital requirements may
differ materially from Holdings' estimates, depending on the demand for
Holdings' services and as a result of regulatory, technological and competitive
developments, including new market developments and new opportunities, in
Holdings' industry. Holdings may also require additional capital in the future,
or sooner than currently anticipated, for new business activities related to its
current and planned businesses, or in the event it decides to make additional
acquisitions or enter into joint ventures and strategic alliances. Sources of
additional capital may include cash flow from operations and public and private
equity and debt financings. There can be no assurance, however, that Holdings
will be successful in producing sufficient cash flow or raising sufficient debt
or capital to meet its strategic objectives or that such funds, if available,
will be available on a timely basis, on terms that are acceptable to Holdings
and within the limitations contained in Holdings' financing arrangements. See
"--Substantial Indebtedness; Restrictive Covenants." Failure to generate or
raise sufficient funds whether in the Proposed Offering, the Credit Facility or
otherwise may require Holdings to delay or abandon some or all of its future
expansion plans or expenditures, which could have a material adverse effect on
Holdings' financial condition, results of operations and cash flow. Such failure
could also limit the ability of Holdings to make principal and interest payments
on its indebtedness, including the Proposed Notes.
 
RISKS RELATED TO THE FIBER NETWORK
 
    Holdings' ability to achieve its strategic objectives will depend in large
part upon the successful, timely and cost-effective completion of its planned
4,300 route mile fiber network. Additionally, Holdings must achieve substantial
traffic volume over the expanded network in order to fully realize the expected
cash flows, operating efficiencies and cost benefits. The construction of
Holdings' fiber network may be affected by a variety of factors, uncertainties
and contingencies, many of which are beyond Holdings' control, including but not
limited to, Holdings' access to sufficient capital, access to rights-of-way, the
timely granting of franchise agreements, availability of construction
contractors, timing conflicts with other fiber projects which could increase
contractor costs, the pricing and availability of advanced fiber optic cable,
construction delays and cost overruns. Although Holdings believes that its cost
estimates and build-out schedule are reasonable, there can be no assurance that
the actual construction costs or time required to complete the construction of
Holdings' fiber network will not exceed current estimates. Holdings believes
that it is likely that broadband prices for carriers' carrier services and
end-user services will continue to decline over the next several years due
primarily to (i) the construction of additional fiber networks that will supply
substantially more transmission capacity than historically has been demanded,
(ii) technological advances that permit substantial increases in the
transmission capacity of fiber at costs lower than building new fiber networks,
and (iii) strategic alliances, such as long distance capacity purchasing
alliances among certain Regional Bell Operating Companies, ("RBOCs"), that
increase customer purchasing power. There
 
                                       41
<PAGE>
can be no assurance that Holdings will be able to achieve increased capacity and
traffic volumes at prices necessary to support the expanded network. A
significant delay, or the inability to complete Holdings' fiber network or to
successfully market the capacity of the network, could have a material adverse
effect on Holdings' financial condition, results of operations and cash flow.
 
DEVELOPMENT OF PROVISIONING, BILLING, CUSTOMER SERVICE AND MANAGEMENT
  INFORMATION SYSTEMS
 
    Sophisticated OSS systems are vital to Holdings' ability to add new
customers and new products, manage network capacity, monitor costs, render
monthly invoices for services, process customer orders, provide customer service
and achieve operating efficiencies. Holdings intends to develop internally or
acquire the information and support systems necessary to manage its growth and
provide its services efficiently. However, there can be no assurance that
Holdings will be able to timely and successfully develop, acquire or operate
such systems. As Holdings begins to provide local switched services, the need
for sophisticated billing and information systems will also increase
significantly and Holdings will have significant additional requirements for
electronic data interfaces with ILECs and other CLECs. Additionally, any
acquisitions would place additional burdens on Holdings' accounting, information
and other systems. Unanticipated problems in any of the above areas, or
Holdings' inability to implement solutions in a timely manner or to establish or
upgrade systems as necessary, could have a material adverse impact on the
ability of Holdings to reach its objectives and on its financial condition,
results of operations and cash flow.
 
COMPETITION
 
    OVERVIEW.  The communications services industry is highly competitive,
rapidly evolving and subject to constant technological change. In particular,
there are numerous companies offering long distance and local services, and
Holdings expects competition to increase in the future. Holdings believes that
existing competitors are likely to continue to expand their service offerings to
appeal to existing or potential customers of Holdings. Many of Holdings's
existing competitors have financial, personnel and other resources, including
brand name recognition, substantially greater than those of Holdings. Moreover,
Holdings expects that new competitors are likely to enter the communications
market, and some of these new competitors may market communications services
similar to Holdings' services. In addition, some of these new competitors may
have financial, personnel and other resources, including brand name recognition,
substantially greater than those of Holdings.
 
    In addition, the regulatory environment in which Holdings operates is
undergoing significant change. As this regulatory environment evolves, changes
may occur which could create greater or unique competitive advantages for all or
some of Holdings' current or potential competitors, or could make it easier for
additional parties to provide services. Other providers currently offer one or
more of each of the services offered by Holdings, and many communications
companies operate generally in the same long distance and local service
submarkets as Holdings. As a service provider in the long distance
communications industry, Holdings competes with several well established
providers, as well as many other long distance providers with less significant
market shares.
 
    DOMESTIC AND INTERNATIONAL LONG DISTANCE.  Holdings provides long distance
services using its own facilities and by reselling the facilities of other
carriers in the United States and between the United States and other countries.
The long distance communications industry is intensely competitive and
significantly influenced by the marketing and pricing decisions of the larger
industry participants such as AT&T, MCI, Sprint and WorldCom. Moreover, the
industry is undergoing significant consolidation that has created and will
continue to create numerous other entities with substantial resources to compete
for long distance business, such as Excel Communications, Inc., Frontier
Communications Service, Inc. and Qwest. In addition, as a result of the
Telecommunications Act of 1996 (the "1996 Telecommunications Act"), RBOCs and
GTE Operating Companies ("GTOCs") are able or will be able in the future to
enter the long distance market. These larger competitors have significantly
greater name recognition, financial, technical, network
 
                                       42
<PAGE>
and marketing resources. They may also offer a broader portfolio of services and
have long standing relationships with customers targeted by Holdings. Moreover,
there can be no assurances that certain of Holdings' competitors will not be
better situated to negotiate contracts with suppliers of telecommunications
services which are more favorable than contracts negotiated by Holdings. Many of
Holdings' competitors enjoy economies of scale that can result in a lower cost
structure for transmission and related terminating costs, which could cause
significant pricing pressures on Holdings.
 
    Holdings competes in the long distance market primarily on the basis of
price, customer service and the ability to provide a variety of communications
products and services. Customers frequently change long distance providers in
response to the offering of lower rates or promotional incentives by
competitors. Prices for domestic and international long distance calls have
declined in recent years and are likely to continue to decrease. Competition in
all of the relevant markets is expected to increase which could adversely affect
net revenue per minute and gross margins as a percentage of net revenue. There
can be no assurance that Holdings will be able to compete effectively in the
domestic or international long distance markets.
 
    LOCAL EXCHANGE SERVICE.  Holdings seeks to expand significantly its
operations to provide services typically provided by ILECs. The local service
market has only recently been opened broadly to new service providers following
enactment of the 1996 Telecommunications Act. The services intended to be
offered by Holdings will compete with those offered by ILECs, such as BellSouth,
Southwestern Bell and the GTOCs, as well as very large interexchange carriers
("IXCs"), such as AT&T, MCI, Sprint and WorldCom. The ILECs currently dominate
the provision of local services in their respective markets and the ILECs and
the IXCs have greater name recognition, financial, technical, network, marketing
and personnel resources than the new entrants, as well as longer standing
relationships with regulatory authorities at the federal and state levels.
Moreover, there can be no assurance that certain of Holdings' competitors will
not be better situated to negotiate contracts with suppliers of
telecommunications services which are more favorable than contracts negotiated
by Holdings. Holdings also may face competition from other current and potential
market entrants, including other CLECs, cable companies, electric utilities,
local exchange carriers ("LECs") operating outside their current local service
areas, other long distance carriers, wireless telephone system owners, microwave
owners, satellite carriers, private networks built by large companies, and
start-up telecommunications ventures. There can be no assurance that Holdings
will be able to compete effectively in the local service markets.
 
    FIBER NETWORKS.  Holdings intends to expand its fiber optic network to
approximately 4,300 route miles throughout Texas and the Gulf Coast region.
Holdings will compete with numerous established and start-up national and
regional fiber optic networks owned by IXCs, ILECs and CLECs throughout Texas
and the Gulf Coast region. These competitors include very large companies such
as AT&T, MCI, WorldCom, Sprint, IXC and Qwest, each of whom has greater name
recognition, financial, personnel, technical and marketing resources than
Holdings. Holdings is aware that other facilities-based providers of local and
long distance telecommunications services are planning and constructing fiber
networks and/or purchasing or leasing dark fiber in order to build additional
networks that, if and when completed, could compete with Holdings' network. In
addition to IXCs and LECs, entities potentially capable of offering broadband
services in competition with Holdings' existing and planned network include
other facilities-based communications service providers, cable television
companies, electric utilities, microwave carriers, satellite carriers, wireless
telephone system operators and large companies who build private networks. Such
competing networks may also have advanced fiber and operating capabilities
similar to those of Holdings' existing and planned network and may be positioned
geographically to compete directly with Holdings' existing and planned network
for many of the same customers along a significant portion of the same routes.
 
    INTERNET TELEPHONY.  Internet services are currently deemed enhanced
services by the FCC and therefore are not subject to federal and state common
carrier regulations, including long distance
 
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<PAGE>
interstate and intra-state access fees. Certain Internet service providers
("ISPs") have recently announced plans to use Internet protocol technologies
("IP Telephony") to introduce domestic and international long distance services
at rates 30% to 50% below standard long distance rates. Although the FCC intends
to review this issue, IP Telephony could increase pressure on IXCs and other
communications companies to reduce prices and margins from domestic and
international long distance services. There can be no assurance that Holdings or
the carrier customers of Holdings will not experience substantial decreases in
call volume, pricing and/or margins due to IP Telephony. There can also be no
assurance that Holdings will be able to offer its telecommunications services to
end users at a price which is competitive with the IP Telephony services offered
by these new companies. IWL also is an ISP. There can be no assurance that
Internet services will not be subject to additional regulation in the future,
although Holdings seeks to compete by introducing IP Telephony in late 1998. The
Internet services market is highly competitive although there are no substantial
barriers to entry, and Holdings expects that competition will continue to
intensify. Holdings' competitors in this market include ISPs, other
telecommunications companies, online services providers and Internet software
providers. Many of these competitors have greater financial, technical and
marketing resources than those available to Holdings.
 
    TECHNOLOGICAL ADVANCES.  In the future, Holdings may be subject to intense
competition due to the development of new technologies resulting in an increased
supply of domestic and international transmission capacity. The
telecommunications industry is experiencing a period of rapid and significant
technological evolution, marked by the introduction of new product and service
offerings and increasing satellite transmission capacity for services similar to
those to be provided by Holdings. For instance, recent advances in wave division
multiplexing technology permit substantial increases in transmission capacity of
both new and older fiber. The introduction of new products or emergence of new
technologies may cause capacity to greatly exceed the demand, reducing the
pricing of certain services to be provided by Holdings. There can be no
assurance that Holdings' services will satisfy future customer needs, that
Holdings' technologies will not become obsolete in light of future technological
developments, or that Holdings will not have to make significant additional
capital investments to upgrade or replace its system and equipment. The effect
on Holdings' operations of technological changes cannot be predicted, and if
Holdings is unable to keep pace with advances, it could have a material adverse
effect on the financial condition, results of operations and cash flow of
Holdings.
 
    OFFSHORE AND REMOTE TELECOMMUNICATIONS SERVICES.  Currently, Holdings
provides telecommunications services to oil and gas customers in the Gulf of
Mexico, the North Sea and other oil and gas producing regions around the world.
In the Gulf of Mexico, Holdings competes directly with Autocomm Communications
Engineering Corp., Sola Communications, Inc., Datacom, Shell, as well as
cellular carriers such as Petrocom and Coastel, and with Data Marine Systems and
EAE Ltd. in the North Sea. Shell currently provides competing services through
its microwave network in the Gulf of Mexico and has announced plans to become a
full service telecommunications provider to the oil and gas industry in the
region. Holdings provides private-line telecommunications services in Russia. In
Russia, the major competitors for networks are SOVAMTEL and AMRUSCOM. Although
Holdings believes that it competes successfully in each of its markets today,
there can be no assurance that Holdings will be able to continue to compete
successfully in the future. Holdings believes that most of its larger
competitors have generally not made it a priority to provide remote,
difficult-access telecommunications services. Should one or more of the
competitors decide to focus on such services, it could have a material adverse
effect on the financial condition, results of operations and cash flow of
Holdings.
 
DEPENDENCE ON OTHER LONG DISTANCE CARRIERS
 
    Holdings has agreements with many carriers to terminate domestic and
international long distance traffic. Certain of these agreements allow for the
termination of domestic traffic, particularly intrastate traffic, at rates
significantly lower than those which Holdings could obtain by terminating
directly with the ILEC at tariffed rates. A termination of service by these
carriers, a reduction in their quality of service or a
 
                                       44
<PAGE>
change in the rates these carriers charge for their services could have a
material adverse effect on Holdings' financial condition, results of operations
and cash flow.
 
    More than half of Holdings' international traffic is to Mexico. Most of
Holdings' traffic into Mexico is terminated by carriers offering rates in some
instances significantly below official settlement rates. In January and February
1998, many carriers, including one used by Holdings, were temporarily unable to
terminate traffic into Mexico. Most of these carriers have since regained their
ability to terminate traffic, and they, along with many other new carriers,
continue to offer terminating rates significantly below international settlement
rates. If competing carriers can provide Holdings' customers with quality and
rates Holdings is unable to match, Holdings could lose a significant portion of
its traffic into Mexico or any foreign country, which could have a material
adverse effect on Holdings' financial condition, results of operations and cash
flow.
 
DEPENDENCE ON INCUMBENT LOCAL EXCHANGE CARRIERS
 
    In addition to reselling local service from ILECs, Holdings intends to
significantly expand its existing efforts to utilize unbundled network elements
that are the components of those services. Such resale will play an important
part in Holdings' local exchange service business strategy. Although the 1996
Telecommunications Act requires the ILECs to allow such resale, there can be no
assurance (i) that the implementation of the 1996 Telecommunications Act, which
has been challenged in federal court by the ILECs, will be concluded on a timely
basis and on co-location terms favorable to Holdings or (ii) that Holdings will
be successful in negotiating with ILECs the necessary interconnection and resale
agreements, particularly the unbundled network elements that Holdings intends to
resell, on terms that will be favorable to Holdings. Any substantial limitation
on Holdings' ability to secure reasonable and timely access to ILEC services and
unbundled network elements could have a material adverse effect on Holdings'
financial condition, results of operations and cash flow.
 
DEPENDENCE ON KEY PERSONNEL
 
    The success of Holdings' business will depend, in part, on the continued
services of certain members of the management of Holdings, IWL,
Telecommunications and the Partnership. In particular, the loss of the services
of one or more of Jere W. Thompson, Jr., Chief Executive Officer and Chairman of
the Board of Holdings, President of Telecommunications and President of the
General Partner, Ignatius W. Leonards, President and Vice Chairman of the Board
of Holdings and Chief Executive Officer and Chairman of the Board of IWL, Byron
M. Allen, Executive Vice President of Holdings and President of IWL and Scott L.
Roberts, Timothy W. Rogers or Timothy M. Terrell, each Executive Vice Presidents
of Holdings and each Executive Vice Presidents of Telecommunications, could have
a material adverse effect on the business, results of operations and financial
condition of Holdings. The competition for qualified managers and employees in
the telecommunications industry is intense. Accordingly, there can be no
assurance that Holdings and its operating subsidiaries will be able to retain
their key employees or that they will be able to attract or retain skilled
personnel in the future.
 
DEPENDENCE ON MAJOR CUSTOMERS
 
    Holdings' carrier customers generally use more than one service provider for
switched access services and can quickly reduce their use of Holdings' services
and move to other providers without incurring significant expense. Holdings'
private line agreements with its customers generally provide that the customer
may terminate service without penalty in the event of certain prolonged outages
in service and for certain other defined causes. As a result of these and other
factors, there can be no assurance that Holdings will be able to retain its
carrier customers. For the year ended December 31, 1997, revenues from services
provided to MCI accounted for more than 10% of Holdings' combined pro forma
revenues. The loss of or a significant decrease of business from any of
Holdings' largest customers would have a material adverse effect on Holdings'
financial condition, results of operations and cash flow.
 
                                       45
<PAGE>
    Customers in the oil and gas industry accounted for substantially all of
Holdings' offshore and project related sales in the fiscal year ended December
31, 1997. Price decreases in oil and gas and other market forces negatively
affecting the oil and gas industry as a whole could affect funding for drilling
activities in the Gulf of Mexico, the North Sea and elsewhere, which could have
a material adverse effect on Holdings' financial condition, results of
operations and cash flow.
 
RISKS ASSOCIATED WITH INTERNATIONAL CUSTOMERS
 
    A portion of IWL's project-related sales to date have been made to customers
located outside of the United States, including customers located in Moscow,
Russia and Quito, Ecuador. Risks inherent in Holdings' international business
activities include changes in regulatory requirements, costs and risks of
localizing systems in foreign countries, customs matters, longer payment cycles,
higher tax rates or additional withholding requirements, difficulty in enforcing
agreements, military, political and transportation obstacles, political and
economic instability, expropriation, nationalization, insurrection, war,
difficulties in staffing and managing foreign operations, fluctuations in
currency exchange rates, regulations which restrict or prohibit repatriation of
funds, technology export and import restrictions or prohibitions, the burden of
complying with a wide variety of complex foreign laws and treaties, changes in
local laws and difficulty in accounts receivable collections. There can be no
assurance that any of these factors will not have a material adverse effect on
Holdings' financial condition, results of operations and cash flow.
 
REGULATION OF LONG DISTANCE AND LOCAL TELEPHONE SERVICES
 
    Telecommunications services are subject to significant regulation at the
federal, state, local and international levels, affecting Holdings and its
existing and potential competitors. Delays in receiving required regulatory
approvals or the enactment of new and adverse legislation, regulations or
regulatory requirements may have a material adverse effect on Holdings'
financial condition, results of operations and cash flow. In addition, future
legislative, judicial and regulatory agency actions could alter competitive
conditions in the markets in which Holdings intends to operate, in ways not
necessarily to Holdings' advantage.
 
    Holdings is currently subject to federal and state government regulation of
its long distance and local telephone services. Holdings is regulated at the
federal level by the FCC and is required to maintain both domestic and
international tariffs for interstate services containing the currently effective
rates, terms and conditions of service. The FCC has proposed, however, to
eliminate the tariffing requirement for domestic interstate non-dominant
carriers, although such detariffing is being reviewed by a federal court and
carriers must continue to file such tariffs during the pendency of the
litigation. In addition, Holdings is required to obtain and maintain a
certificate, issued by the FCC, in connection with its international services.
Holdings holds global authority from the FCC to provide resale of switched
services, and holds global authority from the FCC to provide private line (where
permitted by the FCC) and facilities-based services. Holdings also maintains
numerous licenses in the satellite earth station, microwave and business radio
services which are subject to detailed licensing, operations and technical
requirements established by the FCC. The FCC generally retains the right to
sanction a carrier or revoke its authorization if a carrier violates applicable
laws of regulations. Intrastate long distance telecommunications operations are
also subject to various state laws and regulations, including prior
certifications, notification, or registration requirements. Holdings generally
must obtain and maintain certificates of public convenience and necessity from
regulatory authorities in most states in which it offers intrastate long
distance service. In most of these jurisdictions, Holdings must file and obtain
prior regulatory approval of tariffs for intrastate services. In addition,
Holdings must update or amend the tariffs and, in some cases, the certificates
of public convenience and necessity when rates are adjusted or new products are
added to the long distance services. The FCC and numerous state agencies also
impose prior approval requirements on transfers of control, including pro forma
transfers of control and corporate reorganizations, and assignments of
regulatory authorizations. As a result, Telecommunications, IWL and Holdings
filed notices and/or applications for
 
                                       46
<PAGE>
approval of the Transaction, and the receipt of certain of such approvals is a
condition to the consummation of the Transaction. While Holdings expects to
receive all such approvals that have been requested, there can be no assurance
that such approvals will be granted in a timely fashion.
 
    Holdings' CLEC operations are subject to specific state certification and
compliance requirements. Most states require a certification or other
authorization to offer local exchange services. These certifications generally
require a showing that the carrier has adequate financial, managerial and
technical resources to offer the proposed services in a manner consistent with
the public interest. States generally retain the right to sanction a carrier or
to revoke certifications if a carrier violates applicable laws and/or
regulations.
 
    Holdings' cost of providing long distance service, and its revenues from
providing local services, will both be affected by changes in "access charges"
and universal services. In 1997, the FCC released an order establishing a
significantly expanded federal universal service subsidy regime to be funded by
interstate carriers and certain other entities. The FCC established new
universal service funds to support telecommunications and information services
provided to qualifying schools, libraries and rural health care providers, and
expanded the federal subsidies for local telephone services provided to
low-income consumers. If the federal and state regulations requiring the LECs to
provide equal access for the origination and termination of calls by long
distance subscribers change or if the regulations governing access charge rates
or universal service contribution change, such changes could have a material
adverse effect upon Holdings' financial conditions, results of operations and
cash flow. On July 18, 1997, the United States Court of Appeals for the Eighth
Circuit overturned many of the rules the FCC had established pursuant to the
1996 Telecommunications Act. The Eighth Circuit decision substantially limits
the FCC's jurisdiction and expands state regulators' jurisdiction to set and
enforce rules governing the development of local competition. As a result, it is
more likely that the rules governing local competition will vary substantially
from state to state. If a patchwork of state regulations were to develop, it
could increase Holdings' cost of regulatory compliance and could make entry into
and conducting business in some markets more expensive than in others. The U.S.
Supreme Court has decided to review the Eighth Circuit's decision. There can be
no assurance as to how or when the U.S. Supreme Court will act on the appeal or
that the outcome of the appeal will not have a material adverse effect on
Holdings' financial condition, results of operations and cash flow. See
"Competition" and "Regulation and Licenses."
 
POSSIBLE SERVICE INTERRUPTIONS; NATURAL DISASTERS
 
    Holdings' operations are dependent on its ability, and the ability of third
parties from whom it obtains services, to protect its network and equipment
against damage that may be caused by fire, equipment failures, weather, power
loss, failures, fiber cuts, failure or loss of satellites, human error,
unauthorized intrusion, natural disasters or occurrences, acts of sabotage and
other similar events. Almost all of Telecommunications' voice traffic currently
passes through its single Dallas switch. A second switch is not planned to be
operational until the third quarter of 1998, and no assurance can be given that
such additional switch will be installed on a timely basis or at all. IWL's
operations in remote and underdeveloped areas of the world make IWL's
operations, equipment and employees susceptible to extreme environmental
conditions and political instability. A significant portion of the satellite
communications equipment and foreign circuits used by IWL to provide services is
housed in a single location in IWL's network operations center without a back-up
center and a second center is not planned to be operational until the fourth
quarter of 1998, and no assurance can be given that such additional center will
be operational on a timely basis or at all. In addition, IWL owned or leased
equipment located in the Gulf of Mexico is susceptible to hurricanes. There can
be no assurance that fire, equipment failure or other events would not disable
Telecommunications', the Partnership's or IWL's equipment, which could have a
material adverse effect on Holdings' financial condition, results of operations
and cash flow. Also, networks and switching facilities experience periodic
service interruptions and equipment failures, and the operation of such networks
will be subject to international, national and regional telecommunications
outages or
 
                                       47
<PAGE>
regulatory issues from time to time. It is therefore possible that the networks
and facilities utilized by IWL, Telecommunications and the Partnership may from
time to time experience service interruptions or equipment failures that would
have a material adverse effect on Holdings' financial condition, results of
operations and cash flow.
 
POTENTIAL LIABILITY OF INTERNET SERVICE PROVIDERS
 
    IWL is an ISP. The law governing the liability of on-line services providers
and Internet access providers for participating in the hosting or transmission
of objectionable materials or information currently is unsettled. Under the
terms of the 1996 Telecommunications Act, both civil and criminal penalties can
be imposed for the use of interactive computer services for the transmission of
certain indecent or obscene communications. However, this provision as it
relates to indecent, but not obscene, communications was recently found to be
unconstitutional by the United States Supreme Court in AMERICAN CIVIL LIBERTIES
UNION V. JANET RENO. Nonetheless, many states have adopted or are considering
adopting similar requirements, and the constitutionality of such state
requirements remains unsettled at this time. In addition, several private
lawsuits have been filed seeking to hold Internet access providers accountable
for information which they transmit, such as libelous material and copyrighted
material. While the outcome of these activities is uncertain, the ultimate
imposition of potential liability on Internet access providers for information
which they host, distribute or transport could materially change the way they
must conduct business and could impact the determination of Holdings to expand
or continue this business and could subject IWL, Telecommunications or the
Partnership to litigation which could have a material adverse effect on
Holdings' financial condition, results of operations and cash flow.
 
NEED TO OBTAIN AND MAINTAIN RIGHTS-OF-WAY
 
    The Partnership must obtain rights-of-way and other permits to install
underground conduits from railroads, utilities, state highway authorities, local
governments and transit authorities. There can be no assurance that the
Partnership will be able to obtain and maintain the additional rights and
permits needed to implement its business plan on acceptable terms. Loss of
substantial rights and permits or the failure to enter into and maintain
required arrangements for the fiber network could have a material adverse effect
on Holdings' financial condition, results of operations and cash flow.
 
FAILURE TO CONSUMMATE TRANSACTION; PROCEEDS IN ESCROW ACCOUNT MAY BE
  INSUFFICIENT TO REPURCHASE PROPOSED NOTES
 
    Consummation of the Transaction is subject to certain closing conditions,
including, among other conditions, approval of the respective Mergers by the
shareholders of IWL and Telecommunications, the agreement of each of the
partners in the Partnership to contribute their Partnership Interests to
Holdings in exchange for shares of Holdings Common Stock, and receipt of
material regulatory approvals from the FCC and various state regulatory agencies
in states in which IWL, Telecommunications or the Partnership provide
communications services. The failure to satisfy such conditions would permit
Holdings or the other parties thereto to refuse to consummate the Transaction.
Accordingly, there can be no assurance that the Transaction will be consummated.
The Merger Agreement provides for the Transaction to be consummated no later
than December 31, 1998, although such date may be modified by the parties to the
Merger Agreement.
 
    The net proceeds from the Proposed Offering, if completed, will be deposited
into the Escrow Account and invested in temporary cash investments. If the
Proposed Offering is completed, and if the Transaction is not consummated by
August 31, 1998, Holdings, Telecommunications and the Partnership will be
required to repurchase the Proposed Notes at 101% of their original principal
amount, plus accrued and upaid interest to the date of repurchase (the "Special
Offer to Purchase"). See "Offering of Proposed Notes". The amounts held in the
Escrow Account may be insufficient to repurchase all tendered Notes, and will be
insufficient if all or substantially all of the Proposed Notes are tendered.
Although each of
 
                                       48
<PAGE>
Holdings, Telecommunications, the Partnership and IWL have jointly and severally
agreed to fund any such deficiency (and IWL has guaranteed such obligation),
they do not currently have the financial ability to fund any such deficiency. In
addition, the ability of Holdings, Telecommunications, the Partnership and IWL
to repurchase the Proposed Notes in the event of a Special Offer to Purchase may
be limited by the terms of their respective then existing contractual
obligations.
 
    In the event the Special Offer to Purchase is consummated and any Proposed
Notes remain outstanding thereafter, Holdings and IWL shall be released from
their respective obligations under the Proposed Notes and the Partnership will
be required to engage in either a statutory merger or interest exchange. No
assurance can be given however, that the Partnership and Telecommunications will
consummate such merger or interest exchange.
 
VARIABILITY IN OPERATING RESULTS
 
    The timing of IWL's project-related sales have varied significantly in the
past and are expected to vary significantly in the future. This could cause
Holdings future quarterly or fiscal year operating results to vary significantly
from the prior period and, because of the possibility of these fluctuations,
results for any particular quarter or fiscal year should not be relied upon as
being indicative of future performance. See "Management's Discussion and
Analysis of Financial Condition and Results of Operations of IWL."
 
POSSIBLE CLAIMS RELATING TO OWNERSHIP OF PROPRIETARY RIGHTS
 
    Notwithstanding that Holdings has registered the use of the mark CAPROCK
COMMUNICATIONS in the United States, numerous other companies, particularly in
West Texas, in many different industries have preexisting rights to the name
"Caprock" within defined territories, including one company that may have the
right to use the name for long distance services within an established area, and
these companies could seek to require Holdings to obtain a license from them for
the use of the name "CapRock" within those defined territories or require
Holdings to change its name, either of which could require Holdings to incur
additional expenses. Additionally, if Holdings were required to change its name,
it could lose goodwill, if any, associated with the CapRock name.
 
LACK OF DIVIDENDS
 
    Neither IWL nor Telecommunications has ever paid dividends on its common
stock, and the Partnership has never made a distribution to its partners (other
than an one-time, extraordinary distribution in 1994) and Holdings does not
anticipate paying any cash dividends on the Holdings Common Stock in the
foreseeable future and, in certain circumstances, will be prohibited from doing
so under the terms of its bank credit facility and other loan documents. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operation of IWL" and "Management's Discussion and Analysis of Financial
Condition and Results of Operations of Telecommunications."
 
CONCENTRATION OF OWNERSHIP
 
    Following the consummation of the Transaction, and assuming all Partnership
Interests are tendered pursuant to the Exchange Offer and accepted, the current
officers and directors of IWL, Telecommunications and the General Partner will
beneficially own, in the aggregate, approximately 90.0% of the outstanding
shares of Holdings Common Stock (on a non-diluted basis). Accordingly, the
current officers and directors of IWL, Telecommunications and the General
Partner, acting as a group, will have the ability to elect all of the directors
of Holdings and to control Holdings' management, operations and affairs. In
addition, following the consummation of the Transaction, and assuming all of the
Partnership Interests are validly tendered pursuant to the Exchange Offer and
accepted, the current officers and directors of Telecommunications will
beneficially own, in the aggregate, approximately 85.9% of the outstanding
shares of Holdings Common Stock (on a non-diluted basis).
 
                                       49
<PAGE>
CHANGE OF CONTROL OF IWL
 
    After the Transaction is consummated, and assuming all of the Partnership
Interests are validly tendered pursuant to the Exchange Offer and accepted, the
former shareholders and optionholders of Telecommunications and the former
partners of the Partnership will own, in the aggregate, 85% of the Holdings
Common Stock and the former shareholders, optionholders and warrantholders of
IWL will own 15% of the Holdings Common Stock on a diluted basis. This will
effectively constitute substantial dilution of the voting interest of IWL
shareholders in IWL and an effective change of control of IWL.
 
YEAR 2000 COMPLIANCE
 
    IWL, Telecommunications and the Partnership each utilizes a significant
number of computer software programs and operating systems in its operations,
including applications used in product development, financial business systems,
and various administrative functions. To the extent that their software
applications contain source code that is unable to appropriately interpret the
upcoming calendar year "2000," some level of modification or even possibly
replacement of such applications will be necessary. IWL, Telecommunications and
the Partnership are each currently in the process of completing its
identification of applications that are not "Year 2000" compliant. Given
information known at this time about their systems having such issues, coupled
with their on-going, normal course-of-business efforts to upgrade or replace
business critical systems, as necessary, it is currently not anticipated that
these "Year 2000" costs will have any material adverse impact on Holdings'
financial condition or its results of operations or cash flow. To the extent
that either Holdings' systems or the systems of the entities with which Holdings
contracts with are not fully Year 2000 compliant, potential systems
interruptions or the cost necessary to update software by IWL,
Telecommunications and the Partnership or one of their major vendors or
customers could have a material adverse effect on Holdings' financial condition,
results of operations and cash flow.
 
CERTAIN ANTI-TAKEOVER MATTERS
 
    Upon the consummation of the Transaction, and assuming all of the
Partnership Interests are validly tendered pursuant to the Exchange Offer and
accepted by Holdings, there will be 171,089,778 authorized and unissued shares
of Common Stock and 20,000,000 authorized and unissued shares of Preferred
Stock, par value $.01 per share (the "Preferred Stock") of Holdings. The
existence of authorized but unissued Common Stock and Preferred Stock may enable
the Board of Directors to render more difficult or to discourage an attempt to
obtain control of Holdings by means of a merger, tender offer, proxy
solicitation or otherwise. Holdings is also subject to prior regulatory approval
by the FCC and various state regulatory agencies for a transfer of control of
Holdings or for the assignment of Holdings' (or its subsidiaries') intrastate
certification authority, its international authority and other FCC licenses and
authorizations. The Communications Act of 1934, as amended (the "1934
Communications Act"), generally limits direct foreign ownership of wireless
licenses to 20 percent, but provides for indirect foreign ownership holdings
above 25 percent upon FCC approval. In addition, because Holdings (or its
subsidiaries) holds FCC authority to provide international service, the FCC will
scrutinize an ownership interest in Holdings of greater than 25%, or a
controlling interest at any level, by a dominant foreign carrier. International
carriers, such as Holdings, must notify the FCC 60 days in advance of an
acquisition by a foreign carrier or by an entity that controls a foreign carrier
of a 25% or greater or a controlling interest in such carriers. However, new
rules allow for up to 100% indirect ownership of most wireless licenses upon FCC
review and approval by foreign interests from countries that have participated
in the 1997 World Trade Organization ("WTO") Agreement on Basic
Telecommunications Services, in which the United States and 68 other countries
committed to open their telecommunications markets to competition starting in
1998. Furthermore, the Indenture will provide for a mandatory purchase of the
Notes upon a change of control and the Credit Facility and any indenture
governing the issuance of indebtedness including, but not limited to the Notes
are expected to provide that an event of default or redemption event thereunder
will occur if all or a
 
                                       50
<PAGE>
controlling interest in Holdings' capital stock is sold, assigned or otherwise
transferred. Any of the foregoing factors could have the effect of delaying,
deferring or preventing a change of control of Holdings. The Articles of
Incorporation of Holdings provide that Article 13.03 of the Texas Business
Corporation Act, which includes statutory anti-takeover measures, will not apply
to Holdings. "Regulation and Licenses" and "Description of Capital
Stock--Preferred Stock" and "Certain Anti-Takeover Matters."
 
ASSUMPTION OF GENERAL PARTNER LIABILITIES
 
    After giving effect to the Interest Exchange, and assuming all Partnership
Interests are validly tendered pursuant to the Exchange Offer and accepted,
Telecommunications will become a substitute general partner in the Partnership.
As a general partner, Telecommunications will become generally liable for the
debts and obligations of the Partnership, including debts and obligations that
may be contingent or unknown at the time of the acquisition. The liabilities of
the Partnership outstanding at March 31, 1998 consisted of trade accounts
payable and accrued expenses of $1.1 million and a term construction loan of
$9.1 million, due December 31, 2001. The Partnership was in violation of certain
debt covenants as of December 31, 1996 and 1997. The Partnership has obtained a
waiver for its covenant violations. The Partnership's lender has consented to
consummation of the Transaction. There can be no assurance that these
obligations will not have a material adverse effect on Holdings' financial
condition, results of operations and cash flow.
 
                                       51
<PAGE>
                                THE TRANSACTION
 
GENERAL
 
    The Merger Agreement provides for a business combination between IWL,
Telecommunications and for a plan of exchange with the partners in the
Partnership. Pursuant to the Merger Agreement and subject to the satisfaction of
the conditions set forth therein, I-Sub will be merged with and into IWL and
C-Sub will be merged with and into Telecommunications, with IWL and
Telecommunications each continuing as the surviving corporations of the Mergers.
Pursuant to the Interest Exchange, immediately after the consummation of the IWL
Merger and immediately prior to the consummation of the Telecommunications
Merger, all of the Partnership Interests that are validly tendered to and
accepted by Holdings pursuant to the Exchange Offer will be exchanged for shares
of Holdings Common Stock. Upon the Effective Time of the Mergers, the holders of
IWL Common Stock and the holders of Telecommunications Common Stock will become
shareholders of Holdings, with each outstanding share of IWL Common Stock being
converted into one share of Holdings Common Stock and each outstanding share of
Telecommunications Common Stock being converted into 1.789030878 shares of
Holdings Common Stock. After the Interest Exchange and prior to the
Telecommunications Merger, Holdings will contribute to C-Sub the general
Partnership Interest received by Holdings in the Interest Exchange. As a result,
upon consummation of the Telecommunications Merger, Telecommunications (which
will acquire the general Partnership Interest from C-Sub in the
Telecommunications Merger) will become a substitute general partner of the
Partnership in respect of the general Partnership Interest transferred to it,
Holdings will become a substitute limited partner in the Partnership in respect
of the limited Partnership Interests transferred to it and the holders of the
Partnership Interests will become shareholders of Holdings, with each one
percent (1%) of the Partnership Interests being exchanged for 63,194.54 shares
of Holdings Common Stock. As a result of the Mergers and the Interest Exchange,
assuming all Partnership Interests are validly tendered pursuant to the Exchange
Offer and accepted, the former holders of IWL Common Stock and stock options and
warrants to acquire IWL Common Stock collectively will hold 15% of the issued
and outstanding shares of Holdings Common Stock, and the former holders of
Telecommunications Common Stock and stock options to acquire Telecommunications
Common Stock and the former holders of the Partnership Interests collectively
will hold 85% of the issued and outstanding shares of Holdings Common Stock, all
on a diluted basis.
 
BACKGROUND OF THE TRANSACTION
 
    Prior to entering into negotiations relating to the Transaction, IWL had in
September 1997 entered into a commercial relationship with Telecommunications
and the Partnership to lease fiber from the Partnership. See "Interests of
Certain Persons in the Transaction."
 
    IWL, Telecommunications and the Partnership each regularly evaluated
strategic opportunities, including possible alliances, joint ventures,
acquisitions and other business combinations with various industry participants.
Under appropriate circumstances, representatives of IWL, Telecommunications or
the Partnership established direct or indirect contact with potential
candidates. Set forth below is a summary of the background of these
negotiations.
 
    On Friday, October 10, 1997, Norman Bagwell of Bank One, Texas, N.A.
suggested to Jere W. Thompson, Jr., President of Telecommunications and of the
General Partner, that he meet with representatives of IWL to discuss each
company's strategy for growing their respective businesses.
 
    On Friday, October 17, 1997, Richard H. Roberson, the Chief Financial
Officer of IWL, and Byron M. Allen, the President of IWL, were introduced to
Mark Langdale, a director and principal shareholder of Telecommunications and
Secretary and a director of the General Partner, and Mr. Thompson by Mark Wade
and Norman Bagwell of Bank One, Texas, N.A. A meeting was held in Dallas, Texas.
During the meeting, the discussions were limited to general conversation
regarding each company's business and the similarities between the companies and
their respective strategies for growth. An invitation was extended to Messrs.
Thompson and Langdale to visit the IWL facilities in Houston.
 
                                       52
<PAGE>
    On Friday, October 31, 1997, Messrs. Roberson, Allen and Ignatius W.
Leonards, the Chief Executive Officer of IWL, met with Messrs. Thompson and
Langdale in Houston, Texas, where the discussion included the possible benefits
of a merger of the two companies and the Partnership. Between October 31, 1997
and November 20, 1997, Mr. Thompson and Mr. Allen had several telephone
conversations to discuss the possible organizational structure of the combined
companies.
 
    On Thursday, November 20, 1997, Mr. Thompson met with Messrs. Allen and
Leonards and a representative of Cruttenden Roth to discuss a potential
transaction by IWL with Telecommunications and the Partnership.
 
    On Friday, November 21, 1997, Messrs. Leonards, Allen and Roberson met with
Mr. Thompson and Timothy W. Rogers, Timothy M. Terrell and Scott L. Roberts,
each an Executive Vice President of Telecommunications, to discuss and describe
to each other the respective business of their companies.
 
    On Monday, December 1, 1997, Messrs. Leonards and Thompson had a conference
call from their respective offices to discuss the benefits of a possible
combination of their companies.
 
    On Tuesday, December 2, 1997, IWL and Telecommunications executed a
Confidentiality Agreement and Messrs. Leonards and Thompson met in Houston,
Texas, to discuss the benefits of a merger. Mr. Allen joined the meeting to
discuss transactions being considered by IWL.
 
    On Friday, December 5, 1997, the Board of Directors of IWL held a scheduled
Board meeting telephonically. During the meeting, Mr. Leonards briefed the IWL
Board regarding the discussions with Telecommunications and the Partnership. A
representative of Munsch Hardt explained the fiduciary duties of the IWL Board
in such a transaction.
 
    On Monday, December 15, 1997, Mr. Allen and Myron Goins, an outside director
of IWL, together with a representative of Cruttenden Roth, met with Messrs.
Rogers, Thompson and Langdale. Extensive discussions and negotiations were held
regarding various operational strengths of each organization and, among other
things, the terms and structure of a possible merger, pooling versus purchase
accounting, board representation of the combined company, executive officers of
the combined company, termination fees, proposed exchange ratios, valuation of
each organization and other legal, tax and financial considerations relating to
a possible transaction.
 
    On Tuesday and Wednesday, December 16 and 17, 1997, Messrs. Thompson,
Leonards and Allen had various telephone conversations regarding the proposed
business combination and the business synergies which would make the combined
companies more successful.
 
    On Thursday, December 18, 1997, representatives of IWL, Telecommunications
and the Partnership met at the offices of IWL's counsel, Munsch Hardt, in
Dallas, Texas. Those present included Messrs. Thompson and Langdale of
Telecommunications and Mr. Allen of IWL. A representative of Cruttenden Roth was
present, as well as representatives of Munsch Hardt and representatives of
Hughes & Luce, counsel to Telecommunications and the Partnership. At this
meeting the parties discussed the need for maintenance of confidentiality of the
discussions and, among other things, the structure of the merger, pooling
issues, exchange ratios, caps and collars, timing for preparation and execution
of a definitive agreement, the selection of an auditor and the need for audited
financial statements, the potential need to raise additional capital, due
diligence issues, existing options, break up fees, and members of the Board of
Directors of the new public entity.
 
    On Thursday, December 18, 1997, Telecommunications retained Hoak, Breedlove
& Wesneski, Inc. ("Hoak Breedlove") as its financial advisor pursuant to an
agreement dated as of December 18, 1997. No report, opinion or appraisal was
provided by Hoak Breedlove.
 
    From Friday, December 26, 1997, through the execution of the Merger
Agreement, management of IWL, Telecommunications and the Partnership had
numerous telephone conferences and held numerous due diligence meetings and
numerous other meetings to consider organizational and operational issues of the
combined businesses and the terms of the proposed business combination.
 
                                       53
<PAGE>
    On Friday, January 2, 1998, Messrs. Thompson, Leonards and Allen met in
Houston where they discussed management structure and international
opportunities for the combined companies.
 
    On Tuesday, January 6, 1998, IWL retained Cruttenden Roth pursuant to a
letter dated January 6, 1998, to assist IWL as a financial advisor with respect
to a potential transaction with Telecommunications and the Partnership.
 
    On Friday, January 9, 1998, Messrs. Thompson, Terrell and Rogers of
Telecommunications met in Houston with Mr. Allen and other members of IWL
management to discuss their respective companies and the proposed business
combination.
 
    On Thursday, January 15, 1998, a special meeting of the IWL Board was held
telephonically to discuss and approve the acquisition by IWL of the shares of
stock of ICEL. Also present at the meeting was a representative from Munsch
Hardt. During that meeting Mr. Leonards provided an update to the IWL Board on
the status of the discussions with Telecommunications and the Partnership and
responded, along with Messrs. Allen and Roberson, to various questions by the
directors about the Transaction and about Telecommunications and the
Partnership.
 
    On Monday, January 19, 1998, a special meeting of the IWL Board was held
telephonically, although Messrs. Leonards and Allen were in the offices of
Telecommunications after having meetings with Mr. Thompson to discuss the
proposed business combination. Also present via teleconference were
representatives of Munsch Hardt and a representative of Cruttenden Roth. At this
meeting the representative of Cruttenden Roth reviewed in detail among other
things (i) the operations of Telecommunications and the Partnership, (ii) sales
and marketing department of Telecommunications, (iii) customer mix, (iv) the
opportunities for growth both domestically and internationally, (v) potential
synergies of the combined businesses, (vi) the basis for the valuations being
considered, (vii) the value of the IWL shares, (viii) pooling issues, (ix)
expectations for revenue growth but little, if any, expectations for cost
savings from the termination of redundant operations, although cost savings may
result from avoidance of redundancy in the future, (x) the need for future
capital for the combined business, and (xi) the network capacity of the combined
businesses.
 
    On Friday, January 23, 1998, Messrs. Allen and Leonards met with Mr.
Thompson to continue the negotiation of the relative values of both businesses
and the respective exchange ratios and issues regarding termination of traffic
in Mexico and Texas.
 
    On Thursday, January 29, 1998, Messrs. Thompson and Langdale and a
representative of Hoak Breedlove, on the one hand, and Messrs. Leonards, Allen
and a representative of Cruttenden Roth, on the other hand, had numerous
telephone conversations regarding the proposed exchange ratios for the proposed
business combination. These discussions continued through the next day and were
culminated when Messrs. Thompson and Leonards agreed upon an exchange ratio,
subject to the other terms and provisions of the Merger Agreement being
finalized.
 
    On Tuesday, February 3, 1998, the IWL Board held a special meeting at the
offices of Telecommunications in Dallas which enabled outside directors of IWL
to tour the facilities of Telecommunications and the Partnership and to have
personal meetings with the members of the executive team of Telecommunications
and the Partnership. Also present at the meeting were representatives of Munsch
Hardt and a representative of Cruttenden Roth. At this meeting a representative
of Munsch Hardt reviewed the material terms of the agreements for the
transaction. Mr. Allen explained to the IWL Board that, since the ICEL
transaction had just occurred, both the value of ICEL and the shares of stock of
IWL issued to acquire ICEL were excluded from the calculation of values and
ratios which the IWL Board considered and ultimately approved when it approved
the Transaction. The representative from Cruttenden Roth then presented its
valuation materials to the IWL Board and made his presentation to the IWL Board,
discussing among other things: (i) the analysis prepared by Cruttenden Roth of
each entity, (ii) the relationship between EBITDA and gross revenues in the
various analyses, and (iii) the likely impact on the business of
Telecommunications and the Partnership and the proposed combined business if the
rates to be charged to Telecommunications for terminating traffic in Mexico and
in certain areas of Texas were increased. The
 
                                       54
<PAGE>
IWL Board requested that Cruttenden Roth prepare revised materials showing an
increase in the rates charged to Telecommunications for business in Mexico and
certain areas of Texas and lower margins for such business. Mr. Allen reviewed
with the IWL Board the perceived competitive advantages of each company,
including for Telecommunications and the Partnership (i) strong sales growth,
(ii) fiber and switch infrastructure, (iii) strong management team, and (iv)
carrier billing system. Mr. Allen explained how these strengths complemented
IWL's (i) deployed fiber, microwave and switches, (ii) oil company and
international customer base, (iii) technical and service personnel, and (iv)
status as a CLEC in Texas and Louisiana.
 
    Mr. Allen then explained to the IWL Board the strategy for the combined
business of building an infrastructure in Texas, Louisiana and Oklahoma
utilizing the Partnership's existing network and fiber and IWL's existing
network to grow the business. The representative of Cruttenden Roth then
summarized the results of its analysis and delivered its oral opinion to the IWL
Board that, as of such date and subject to certain assumptions, limitations and
qualifications from a financial point of view, the relative exchange ratios
agreed upon in the Transaction were fair to the shareholders of IWL.
 
    Mr. Thompson joined the meeting to discuss with the IWL Board the strategy
of Telecommunications and the Partnership, his vision and implementation plans
for the Transaction and the combined business.
 
    On Thursday, February 5, 1998, the Telecommunications Board met to discuss
the Transaction and its terms. At that time, it determined that the provisions
and terms of the Merger Agreement were fair to and in the best interest of
Telecommunications and its shareholders and authorized the officers of
Telecommunications to execute the Merger Agreement and the related agreements on
behalf of Telecommunications.
 
    On Thursday, February 5, 1998, the General Partner Board determined that the
provisions and terms of the Merger Agreement were fair to and in the best
interest of the Partnership and the partners and authorized the officers of the
General Partner to execute the Merger Agreement and the related agreements on
behalf of the Partnership.
 
    On Saturday, February 7, 1998, Messrs. Thompson called Leonards to inform
him that one of Telecommunications' underlying long distance carriers into
Mexico could no longer complete Telecommunications' traffic to Mexico.
 
    On Sunday, February 8, 1998, Mr. Thompson met with Messrs. Allen and
Leonards in Houston to discuss the transactions and the impact, if any, on
Telecommunications and the proposed business combination of the loss of one of
Telecommunications' underlying long distance carriers into Mexico.
 
    On Tuesday, February 10, 1998, the IWL Board held a special telephonic board
meeting to discuss the proposed business combination. Each director had received
a revised analysis from Cruttenden Roth that had been revised to address changes
in the pricing and the potential decline in revenues for Telecommunications'
traffic into Mexico and certain areas of Texas. The representative from
Cruttenden Roth made a presentation summarizing the Transaction and the history
of the negotiations and discussions including (i) caps and collars, (ii) pooling
of interests, (iii) the accretive nature of the transaction, (iv) strategic
implications for the combined companies, (v) the financial markets viewpoint of
telecommunications companies, (vi) enhanced speed to market for IWL because of
the existing network of the Partnership, (vii) the synergy of IWL's technical
expertise with the marketing expertise of Telecommunications, (viii) the
additional minutes which would be provided for use on the Partnership's network
from IWL customers, (ix) growth areas in the international markets, and (x) the
enhanced ability for the combined business to provide more traditional
telecommunications services and products including long distance and LEC
Services to customers.
 
    Mr. Allen then gave a report on the status of Telecommunications' traffic
into Mexico. IWL's staff had been working with another carrier in Mexico to
enter into an agreement for the termination of calls into Mexico, and Mr. Allen
believed that such an agreement was imminent. The analysis prepared by
Cruttenden Roth contemplated such a potential service interruption occurrence in
Mexico. The analysis reflected that Telecommunications, like many other long
distance carriers, has agreements with many
 
                                       55
<PAGE>
carriers to terminate domestic and international long distance traffic, and the
termination of certain of these contracts or a change in the rates these
carriers charge for their services would impact Telecommunications. Mr. Allen
and the representative of Cruttenden Roth pointed out to the IWL Board that the
exchange ratios had been previously adjusted due to the potential risk of lost
traffic into Mexico and Texas.
 
    The IWL Board decided to defer any decision on the Transaction until it had
received a report from Telecommunications' management regarding the impact of
traffic into Mexico.
 
    On Thursday, February 12, 1998, the IWL Board held a special telephonic
board meeting to discuss the proposed business combination. Also participating
in the meeting by invitation of the IWL Board were representatives of Cruttenden
Roth and representatives of Munsch Hardt. Each director confirmed that they had
received reports from Cruttenden Roth reflecting changes in the assumptions for
the discounted cash flow analysis of IWL and for Telecommunications and the
Partnership. The assumptions of Telecommunications and the Partnership were
adjusted to reflect possible changes in tariffs and rates both in Mexico and
other areas for Telecommunications and the Partnership. Mr. Allen advised the
IWL Board that Telecommunications had retained a significant portion of its
traffic into Mexico and that an agreement between IWL and a long distance
carrier based in Mexico to terminate traffic into Mexico had been negotiated.
Mr. Allen also provided support for the reasonableness of the assumptions used
by Cruttenden Roth. A representative from Cruttenden Roth confirmed that its
analysis showed that the transaction would be accretive on a going forward basis
in 1998. A representative of Cruttenden Roth then reconfirmed that its opinion
regarding the transaction remained unchanged after review of the various matters
that had transpired since the February 3, 1998, IWL Board meeting, and that
based upon its analysis of the Transaction it was its opinion that as of that
date, subject to the certain assumptions, limitations, and qualifications, from
a financial point of view, the exchange ratios were fair to the IWL
Shareholders. After deliberations with respect thereto, the IWL Board
unanimously determined that the provisions and terms of the Merger Agreement
were fair to and in the best interest of IWL and the IWL shareholders,
recommended that the holders of IWL Common Stock vote for the approval of the
Merger Agreement and authorized the officers of IWL to execute the Merger
Agreement and the related agreements on behalf of IWL.
 
    Following the IWL Board meeting on Thursday, February 12, 1998, Messrs.
Leonards, Allen, Roberson, Thompson and Langdale, as well as representatives of
Munsch Hardt and of Hughes & Luce, met at the offices of Telecommunications in
Dallas to finalize the terms of the Merger Agreement, which contained exchange
ratios that would have resulted in holders of IWL Common Stock and options and
warrants owning 29% and holders of Telecommunications Common Stock and options
and warrants and of Partnership Interests (assuming they were all tendered to
and accepted by Holdings in the Exchange Offer) owning 71% of the Holdings
Common Stock, on a diluted basis, upon consummation of the Transaction.
 
    On Monday, February 16, 1998, IWL, Telecommunications and the Partnership
executed the Merger Agreement, certain owners of Telecommunications and the
Partnership and IWL executed the CapRock Owners Agreement and certain IWL
shareholders and Telecommunications and the Partnership executed the IWL
Shareholders Agreement. February 16, 1998 was a holiday. The closing price on
the Nasdaq National Market on Friday, February 12, 1998, the last business day
prior to February 16, 1998 on which IWL Common Stock was traded, was $9 7/8 per
share, which, under the original exchange ratio (as amended in April 1998) would
have resulted in the shareholders of IWL receiving $37,073,021, the shareholders
of Telecommunications receiving $77,320,495 and the holders of the Partnership
Interests receiving $26,287,053 if the Transaction was effected that day and all
of the Partnership Interests were validly tendered to and accepted by Holdings
in the Exchange Offer.
 
    On Tuesday, February 17, 1998, prior to the opening of trading on the Nasdaq
National Market, IWL issued a press release announcing the Transaction.
 
    On April 30, 1998, the IWL Board, the General Partner Board, the
Telecommunications Board, the Holdings Board and the boards of each merger
subsidiary approved, and the appropriate officers executed,
 
                                       56
<PAGE>
the First Amendment to the Merger Agreement to make minor adjustments to the
Telecommunications Exchange Ratio to address calculation errors in the number of
shares of Telecommunications Common Stock and of Telecommunications options that
were outstanding. Such amendment did not change any of the other exchange ratios
or change the total number of shares that had been approved for issuance by
Holdings.
 
    On Thursday, June 11, 1998, the Board of Directors of Holdings and the IWL
Board each held meetings to authorize the issuance and guarantee of the Proposed
Notes. The Boards of Directors of Telecommunications and of the General Partner
approved the issuance of the Proposed Notes on Thursday June 18, 1998.
 
    On Saturday, June 13, 1998, Mr. Thompson called Mr. Leonards to assert that,
in Mr. Thompson's opinion, contract delays causing lower IWL revenues than those
set forth in the IWL business plan furnished to CapRock in connection with the
original regulations of the Merger Agreement, among other factors, constituted a
Material Adverse Effect (as defined in the Merger Agreement) with respect to IWL
which could reasonably be expected to have a Material Adverse Effect on
Telecommunications and the Partnership. As a result of such asserted Material
Adverse Effect, Mr. Thompson asserted that Telecommunications and the
Partnership believed that they had the right to terminate the Merger Agreement,
but that in lieu of exercising such right of termination, they would be willing
to complete the Transaction with modified exchange ratios.
 
    On Saturday, June 13, 1998, following the conversation between Messrs.
Leonards and Thompson, the IWL Board held a special meeting. Also participating
in this meeting by invitation of the IWL Board was a representative of
Cruttenden Roth and a representative of Munsch Hardt. At this meeting, Mr.
Leonards provided a summary to the IWL Board of his conversations with Mr.
Thompson. Mr. Roberson then provided an update to the IWL Board of the status of
IWL's operations as compared with its business plan which had been provided to
Telecommunications and the Partnership prior to execution of the Merger
Agreement. A representative of Munsch Hardt then provided a summary of the terms
of the Merger Agreement and the legal alternatives available. After significant
discussion, the IWL Board determined that the alternative that was in the best
interest of IWL and the shareholders of IWL was to pursue the Mergers with
altered exchange ratios. A representative of Cruttenden Roth was directed to
provide an updated opinion to the IWL Board regarding the modified exchange
ratios once they were tentatively determined. Mr. Leonards was authorized to
approach Mr. Thompson to discuss alternative exchange ratios.
 
    Between June 13, 1998, and June 18, 1998, Messrs. Leonards and Thompson had
numerous telephone conversations regarding the proposed Transaction and the
existing exchange ratios, as well as proposed modifications thereto. As a result
of these discussions, it was proposed that the exchange ratios be changed so
that the holders of IWL Common Stock and options and warrants would own 15% of
Holding Common Stock, holders of Telecommunications Common Stock and options
would own 63.8% of Holdings Common Stock and the holders of Partnership
Interests (assuming they were all validly tendered to and accepted by Holdings
in the Exchange Offer) would own 21.2% of Holdings Common Stock, on a diluted
basis, upon consummation of the Transaction.
 
    On Thursday, June 18, 1998, the IWL Board held a special meeting. Also
participating in this meeting by invitation of the IWL Board was a
representative of Cruttenden Roth and a representative of Munsch Hardt. Mr.
Leonards provided a summary of his conversations with Mr. Thompson which
included the modifications to the exchange ratios as requested by Mr. Thompson.
A representative of Munsch Hardt discussed the terms of the proposed amendment
to the Merger Agreement, which in addition to modifying the exchange ratios
removed many of the conditions to the Merger. Each director confirmed that he
had received revised reports from Cruttenden Roth. The report showed the
disparities between IWL's actual operations and those of the forecasts used
internally by IWL and provided to Telecommunications and the Partnership in
connection with negotiation of the Merger Agreement. The report also reflected
changes in the assumptions in the discounted cash flow analysis of
Telecommunications and the Partnership. The
 
                                       57
<PAGE>
assumptions for IWL were adjusted to reflect its performance to date for the
year and management's expectations for the remainder of the year. The
assumptions for Telecommunications and the Partnership were adjusted to reflect
their performance to date for the year and management's expectations for the
remainder of the year and 1999. A representative of Cruttenden Roth then
provided its oral opinion that, based upon its analysis of the Transaction and
the proposed modified exchange ratios, it was its opinion that, as of that date,
subject to certain assumptions, limitations and qualifications, from a financial
point of view, the modified exchange ratios were fair to the IWL shareholders.
After deliberations with respect thereto, the IWL Board determined that the
amendment to the Merger Agreement containing the modified exchange ratios was
fair to and in the best interest of IWL and the IWL shareholders, recommended
that the holders of IWL Common Stock vote for the approval of the Merger
Agreement with the modified exchange ratios and authorized the officers of IWL
to execute an amendment to the Merger Agreement to reflect such modified
exchange ratios.
 
    On Thursday, June 18, 1998, the Telecommunications Board determined that the
amendment to the Merger Agreement containing the modified exchange ratios was
fair to and in the best interest of Telecommunications and its shareholders and
authorized the officers of Telecommunications to execute an amendment to the
Merger Agreement to reflect the modified exchange ratios.
 
    On Thursday, June 18, 1998, the General Partner Board determined that the
amendment to the Merger Agreement containing the modified exchange ratios were
fair to and in the best interest of the partners and the Partnership and
authorized the officers of the General Partner to execute an amendment to the
Merger Agreement to reflect the modified exchange ratios.
 
    On Thursday, June 18, 1998, following the meetings of the boards of IWL,
Telecommunications and the General Partner, Mr. Thompson learned of and then
called Mr. Leonards to advise him of uncertainties regarding the size and timing
of the offering of the Proposed Notes. Mr. Leonards then called a meeting of the
IWL Board to be held on Saturday, June 20, 1998, in order to consider the new
information prior to his execution of the amendment to the Merger Agreement.
 
    On Saturday, June 20, the IWL Board met again and, following review of the
information regarding the uncertainties of the size and timing of the offering
of the Proposed Notes, confirmed their decisions made on Thursday, June 18,
1998, and reauthorized the officers to execute an amendment to the Merger
Agreement to reflect, among other things, the modified exchange ratios.
 
    On Monday, June 22, 1998, IWL issued a press release announcing the
amendment to the Merger Agreement and the change in the exchange ratios. The
closing price on the Nasdaq National Market on Monday June 22, 1998 was $
per share which under the modified exchange ratios would have resulted in the
shareholders of IWL receiving $       , the shareholders of Telecommunications
receiving $       , and the holders of the Partnership Interests receiving
$       if the Transaction was effected that day and assuming that all of the
Partnership Interests were valid tendered and accepted by Holdings.
 
RECOMMENDATION OF IWL BOARD
 
    THE IWL BOARD, BY UNANIMOUS VOTE, HAS DETERMINED THAT THE TERMS OF THE
MERGER AGREEMENT ARE FAIR TO, AND IN THE BEST INTERESTS OF THE HOLDERS OF IWL
COMMON STOCK AND RECOMMENDS THAT HOLDERS OF IWL COMMON STOCK VOTE FOR THE
APPROVAL OF THE MERGER AGREEMENT.
 
    In reaching its determination to approve the Merger Agreement and the
transactions contemplated thereby, the IWL Board consulted with IWL management
and financial and legal advisors and considered the proposed terms of the Merger
Agreement and the related agreements. In reaching its conclusions, the IWL Board
also considered the strategic advantages of the Transaction described below, as
well as, among other things: (i) information concerning the financial
performance and condition, business operations, capital levels, asset quality
and prospects of Telecommunications and the Partnership and the projected future
financial performance of IWL as a separate entity and of IWL, Telecommunications
and the Partnership on a combined basis; (ii) current industry, economic and
market conditions and trends,
 
                                       58
<PAGE>
including the likelihood of continuing consolidation and increasing competition
in the telecommunications industry; (iii) the opinion of Cruttenden Roth
described below as to the fairness, from a financial point of view, of the
relative exchange ratios (which were determined through arm's-length
negotiations among IWL, Telecommunications and the Partnership) to the
shareholders of IWL; (iv) the likelihood of obtaining required regulatory
approvals and the possibility that regulatory authorities may impose burdensome
conditions to the grant of such approvals; (v) presentations by IWL management
and its financial and legal advisors regarding Telecommunications and the
Partnership; and (vi) the risks associated with the Transaction which, among
other things, included the ability of all three businesses to manage change and
to maintain operations during the merger process, the ability to integrate the
business, the impact upon employees and customers, the need for capital to
achieve the business plan of the combined organizations, and competition.
 
RECOMMENDATION OF TELECOMMUNICATIONS BOARD
 
    THE TELECOMMUNICATIONS BOARD, BY UNANIMOUS VOTE, HAS DETERMINED THAT THE
TERMS OF THE MERGER AGREEMENT ARE FAIR TO, AND IN THE BEST INTERESTS OF,
TELECOMMUNICATIONS AND THE HOLDERS OF TELECOMMUNICATIONS COMMON STOCK AND
RECOMMENDS THAT THE HOLDERS OF TELECOMMUNICATIONS COMMON STOCK VOTE FOR THE
APPROVAL OF THE MERGER AGREEMENT.
 
    In reaching its determination to approve the Merger Agreement and the
transactions contemplated thereby, the Telecommunications Board consulted with
Telecommunications management and financial and legal advisors and considered
the proposed Merger Agreement and the related agreements although no financial
report, opinion or appraisal was provided. In reaching its conclusions, the
Telecommunications Board also considered the strategic advantages of the
Transaction described below, as well as, among other things, the following: (i)
the terms of the Merger Agreement and the ability of the holders of
Telecommunications Common Stock to receive Holdings Common Stock, which upon
consummation of the Mergers will, subject to applicable securities laws, be
publicly traded, in exchange for their Telecommunications Common Stock; (ii) its
knowledge of the business, operations, properties, assets, financial condition,
operating results and prospects of Telecommunications, the Partnership and IWL;
(iii) current industry, economic and market conditions; (iv) presentations by
Telecommunications management and its financial and legal advisors regarding IWL
and the Partnership; (v) the compatibility of the respective business
philosophies of Telecommunications, the Partnership and IWL; (vi) the
opportunity for the holders of Telecommunications Common Stock to participate in
a larger, stronger and more competitive telecommunications company; (vii) the
benefits of being able to access the public capital markets to help grow its
business and finance its operations; (viii) continuing the existing business
plan of Telecommunications as an independent organization; and (ix) the risks
associated with the Transaction which, among other things, included the ability
of all three businesses to manage change and to maintain operations during the
merger process, the ability to integrate the business, the impact upon
customers, the need for capital to achieve the business plan of the combined
organizations, and competition.
 
RECOMMENDATION OF GENERAL PARTNER BOARD
 
    THE GENERAL PARTNER BOARD, BY UNANIMOUS VOTE, HAS DETERMINED THAT THE TERMS
OF THE MERGER AGREEMENT AND THE EXCHANGE OFFER ARE FAIR TO, AND IN THE BEST
INTERESTS OF, THE PARTNERSHIP AND THE HOLDERS OF PARTNERSHIP INTERESTS AND
RECOMMENDS THAT THE HOLDERS OF PARTNERSHIP INTERESTS PARTICIPATE IN THE INTEREST
EXCHANGE AND, IN CONNECTION THEREWITH, EXCHANGE THEIR PARTNERSHIP INTERESTS FOR
SHARES OF HOLDINGS COMMON STOCK PURSUANT TO THE MERGER AGREEMENT AND THE
EXCHANGE OFFER.
 
    In reaching its determination to approve the Merger Agreement and the
transactions contemplated thereby, the General Partner Board consulted with
Partnership management and financial and legal advisors and considered the
proposed Merger Agreement and the related agreements although no
 
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financial report, opinion or appraisal was provided. In reaching its
conclusions, the General Partner Board also considered the strategic advantages
of the Transaction described below, as well as, among other things, the
following: (i) the terms of the Merger Agreement, and the ability of the holders
of Partnership Interests to receive Holdings Common Stock, which, upon
consummation of the Interest Exchange, will, subject to applicable securities
laws, be publicly traded, in exchange for their Partnership Interests; (ii) its
knowledge of the business, operations, properties, assets, financial condition,
operating results and prospects of Telecommunications, the Partnership and IWL;
(iii) current industry, economic and market conditions; (iv) presentations by
Partnership management and its financial and legal advisors regarding IWL and
Telecommunications; (v) the compatibility of the respective business
philosophies of Telecommunications, the Partnership and IWL; (vi) the
opportunity for the holders of Partnership Interests to participate in a larger,
stronger and more competitive telecommunications company; (vii) the benefits of
being able to access the public capital markets to help finance the expansion
and construction of its fiber network; (viii) continuing the existing business
plan of the Partnership as an independent entity; and (ix) the risks associated
with the Transaction which, among other things, included the ability of all
three businesses to manage change and the ability to maintain operations during
the merger process, the ability to integrate the business, the impact upon
employees and customers, the need for capital to achieve the business plan of
the combined organizations, and competition.
 
REASONS FOR THE TRANSACTION
 
    The IWL Board, the Telecommunications Board and the General Partner Board
believe that the combination of businesses of IWL, Telecommunications and the
Partnership will create the platform for Holdings to become a leading
facilities-based provider of integrated communications services in Texas and the
Gulf Coast region. The IWL Board, the Telecommunications Board and the General
Partner Board believe that the Transaction will provide opportunities to achieve
substantial benefits for the respective shareholders and partners of each
company by combining their respective assets, management, personnel and
customers. The Boards further believe that the combined entities will be better
and more quickly able to capitalize on opportunities in the rapidly changing
communications industry, both domestically and internationally, than any of the
entities on a stand-alone basis.
 
    The Boards believe that the Transaction enables Holdings to offer a complete
suite of communications services, including local and long distance, data and
dedicated long distance capacity. The primary strategic advantages of the
Transaction that were considered by the Boards in reaching their determinations
to recommend the Transaction were (i) enhanced revenue opportunities from the
integration of the existing fiber and switching network infrastructure of each
company, (ii) greater organizational depth through the combination of the
marketing, customer service and networking strengths of Telecommunications with
the technological, project management and last mile distribution expertise of
IWL, (iii) opportunities to leverage the Partnership's fiber network by offering
voice, data and broadband services in markets geographically clustered near or
along the existing and planned infrastructure of the three companies; and (iv)
opportunities for international revenue growth through the combination of
Telecommunications' customer base, the Partnership's planned network and IWL's
relationships with numerous foreign regulators and communications providers.
 
    In addition to the joint reasons for the Transaction described above, in
reaching its determination to recommend the Transaction the IWL Board considered
the benefits of obtaining access to an existing network, which will enable IWL
to avoid the cost, delay and management time commitment required to build a new
network infrastructure.
 
    In addition to the joint reasons for the Transaction described above, in
reaching their determination to recommend the Transaction, the
Telecommunications Board and the General Partner Board considered the benefits
of being able to access the public capital markets to help grow their
businesses, including to finance capital expenditures.
 
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    The following are the primary strategic advantages of the Transaction that
were considered by the Boards in reaching their determinations to recommend the
Transaction:
 
    COMBINED NETWORK INFRASTRUCTURE.  The IWL Board, the Telecommunications
Board and the General Partner Board believe that the Transaction will create
revenue opportunities from the combination of existing switching fiber and
microwave network infrastructure of the three companies in Texas and the Gulf
Coast region. The Partnership's existing fiber network extends from Houston to
Corpus Christi, Texas. Telecommunications owns a DSC DEX 600 switch and a
smaller PC based switch installed in Dallas, Texas with an extensive originating
and terminating network throughout Texas and Oklahoma. IWL owns multiple earth
stations and leases access to satellites having footprints covering parts of the
U.S. and Europe. IWL also owns a digital microwave network in and along the
Texas Gulf Coast connecting drilling rigs, and 15 towns and cities to the
Partnership's existing fiber network.
 
    BRINGING THE IWL CUSTOMER BASE TO THE PARTNERSHIP'S NETWORK.  The Boards
believe that the margins for the combined business will be enhanced by utilizing
the Partnership's network for IWL's existing traffic and that additional
services will be available for sale to such customers as a result.
 
    ENHANCED MANAGEMENT CAPABILITIES.  The Boards believe that the marketing,
customer service and networking strengths of Telecommunications will be able to
expand the business of the customers and contacts of IWL and that the technology
and project expertise of IWL will help the expansion of the business of
Telecommunications and the Partnership.
 
    REVENUE GROWTH INTERNATIONALLY.  The Boards have seen the combined teams of
IWL and Telecommunications and the Partnership work together to address the
delivery of long distance service into Mexico and believe that this will be an
opportunity for additional growth. The Boards also believe that the contacts,
customers, expertise and presence of IWL in various other international markets
will, when combined with the marketing talents of Telecommunications, provide
additional opportunities for growth.
 
    CLEC.  IWL is licensed to provide LEC Services in Louisiana and Texas, and
IWL has negotiated agreements with Southwestern Bell and Bell South to purchase
unbundled network elements. Telecommunications has a Service Provider
Certificates of Authority ("SPCOA") in Texas, Oklahoma, Kansas and Arkansas to
sell LEC Services, and has negotiated agreements with Southwestern Bell and Bell
South to resell their local and enhanced services. The Boards believe these
agreements (together with the completed fiber network of the Partnership) will
create opportunities for revenue growth.
 
    In addition to the joint reasons for the Transaction described above, in
reaching its determination to recommend the Transaction the IWL Board
considered:
 
    ACCELERATION OF FIBER NETWORK BUILD OUT.  One of IWL's business strategies
has been to develop company-owned fiber infrastructure. The Transaction will
accelerate the achievement of this strategy by providing IWL with access to the
Partnership's existing fiber network, expansion plans and management, thereby
enabling IWL to avoid the cost, delay and management time commitment required to
build its own fiber network infrastructure.
 
    In addition to the joint reasons for the Transaction described above in
reaching its determination to recommend the Transaction, the Telecommunications
Board and the General Partner Board considered:
 
    ACCESS TO PUBLIC CAPITAL MARKETS.  The Telecommunications Board and the
General Partner Board believe the combination with IWL will give
Telecommunications and the Partnership, respectively, enhanced and quicker
access to the public capital markets, making it easier to finance the capital
expenditures and the growth of the businesses of Telecommunications and the
Partnership. Additionally, the Transaction will provide liquidity to the holders
of Telecommunications Common Stock and the Partnership Interests who, upon
consummation of the Transaction, will receive Holdings Common Stock which will
be publicly traded, subject to applicable securities laws.
 
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<PAGE>
    There can be no assurance that any of the potential advantages, efficiencies
or opportunities described above under "Reasons for the Transaction" will be
achieved through the consummation of the Transaction. See "Cautionary Statement
Concerning Forward-Looking Statements" and "Risk Factors."
 
    The foregoing discussion of the information and factors considered by the
Boards is not intended to be exhaustive, but is intended to include the material
factors considered by each Board. In view of the wide variety of factors
considered by each of the Boards, the directors of each Board did not find it
practical to, and did not, quantify or otherwise assign relative weight to the
specific factors considered and individual directors may have ascribed different
weights to different factors.
 
FAIRNESS OPINION OF IWL FINANCIAL ADVISOR
 
    Cruttenden Roth acted as financial advisor to IWL in connection with the
Merger with Telecommunications and the Partnership and delivered a written
opinion to the IWL Board dated June 19, 1998 (such written opinion, the
"Cruttenden Roth Opinion"), stating that as of the date of the Cruttenden Roth
Opinion, and based on and subject to the assumptions, limitations and
qualifications set forth therein, from a financial point of view, the
consideration to be paid by Holdings and the relative exchange ratios are fair
to the shareholders of IWL.
 
    THE FULL TEXT OF CRUTTENDEN ROTH'S WRITTEN OPINION IS ATTACHED AS ANNEX II
TO THIS JOINT PROXY STATEMENT/PROSPECTUS AND IS INCORPORATED HEREIN BY
REFERENCE. IWL STOCKHOLDERS SHOULD READ THE CRUTTENDEN ROTH OPINION IN ITS
ENTIRETY FOR ASSUPTIONS MADE, PROCEDURES FOLLOWED AND OTHER MATTERS CONSIDERED.
 
    No limitations were imposed by IWL on the scope of Cruttenden Roth's
investigation or the procedures to be followed by Cruttenden Roth in rendering
its opinion. Cruttenden Roth was not requested to and did not make any
recommendation to the IWL Board as to the form or amount of the consideration to
be paid by IWL, which was determined through arm's-length negotiations among the
parties. In arriving at its opinion, Cruttenden Roth did not ascribe a specific
range of values to Telecommunications, the Partnership or IWL, but rather made
its determination as to the fairness, from a financial point of view, to the
Shareholders of IWL, of the consideration to be paid by Holdings in the Merger
on the basis of the financial and comparative analyses described below.
Cruttenden Roth's opinion, is for the use and benefit of the IWL Board and was
rendered to the IWL Board in connection with its consideration of the Merger.
Cruttenden Roth's opinion is not intended to be and does not constitute a
recommendation to any stockholder of IWL as to how such stockholder should vote
with respect to the IWL Share Issuance Proposal. Cruttenden Roth was not
requested to opine as to, and its opinion does not address, IWL's underlying
business decision to proceed with or effect the Merger.
 
    In arriving at its opinion, Cruttenden Roth reviewed and analyzed: (1) the
Merger Agreement, as amended, and the specific terms of the Proposed
Transaction, (2) such publicly available information relating to IWL,
Telecommunications and the Partnership which it believed to be relevant to
Cruttenden Roth's analysis, (3) historical and projected financial and operating
information with respect to the business, operations and prospects of IWL
furnished to Cruttenden Roth by IWL, (4) historical and projected financial and
operating information with respect to the business, operations and prospects of
Telecommunications and the Partnership furnished to Cruttenden Roth by
Telecommunications, the Partnership and by IWL, (5) the trading history of IWL's
common stock from its initial public offering date to the present and a
comparison of that trading history with those of other companies that it deemed
relevant, (6) a comparison of the historical financial results and present
financial condition of IWL with those of other companies that Cruttenden Roth
deemed relevant, (7) a comparison of the historical financial results and the
present financial condition of Telecommunications and the Partnership with those
of other companies that Cruttenden Roth deemed relevant, (8) a comparison of the
quarterly and annual earnings estimates of Cruttenden Roth's research analyst
for IWL with IWL's actual and projected results, (9) the potential pro forma
financial effects of the proposed Transaction, (10) a comparison of the
financial
 
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<PAGE>
terms of the proposed Transaction with the financial terms of certain other
transactions that Cruttenden Roth deemed relevant and (11) the projections of
IWL, Telecommunications and the Partnership on a combined basis and the relative
contribution of the business to the projected combined operating results in
relation to the relative exchange ratios. In addition, Cruttenden Roth had
discussions with the managements of IWL, Telecommunications and the Partnership
concerning their respective businesses, operations, assets, financial conditions
and prospects and the potential strategic benefits of the proposed Transaction
and have undertaken such other studies, analyses and investigations as
Cruttenden Roth deemed appropriate.
 
    In arriving at its opinion, Cruttenden Roth assumed and relied upon the
accuracy and completeness of the financial and other information used by
Cruttenden Roth without assuming any responsibility for independent verification
of such information and further relied upon the assurances of management of IWL,
Telecommunications and the Partnership that they are not aware of any facts that
would make such information inaccurate or misleading. With respect to the
financial projections of IWL, Telecommunications and the Partnership, upon
advice of IWL, Cruttenden Roth assumed that such projections were reasonably
prepared on a basis reflecting the best currently available estimates and
judgments of the management of IWL, Telecommunications, and the Partnership, as
to the future financial performance of IWL, Telecommunications, the Partnership
and the combined company (not including the cost savings and operating
synergies, if any, which may result from a combination of IWL,
Telecommunications and the Partnership.) In arriving at its opinion, Cruttenden
Roth did not make or obtain any evaluations or appraisals of the assets or
liabilities of IWL, Telecommunications and the Partnership. Upon advice of IWL
and its legal and accounting advisors, Cruttenden Roth assumed that the Merger
will qualify as a tax-free transaction to the shareholders of IWL,
Telecommunications and the Partnership. Cruttenden Roth's opinion necessarily is
based upon market, economic and other conditions as they existed on, and could
be evaluated as of, the date of its opinion.
 
    In connection with the delivery of its opinion, Cruttenden Roth performed a
variety of financial and comparative analyses, the principal elements of which
are described below. The preparation of a fairness opinion involves various
determinations as to the most appropriate and relevant methods of financial and
comparative analysis and the application of those methods to the particular
circumstances, and, therefore, such an opinion is not readily susceptible to
summary description. Furthermore, in arriving at its opinion, Cruttenden Roth
did not attribute any particular weight to any analysis or factor considered by
it but, rather, made qualitative judgments as to the significance and relevance
of each analysis and factor. Accordingly, Cruttenden Roth believes that its
analyses must be considered as a whole and that considering any portion of such
analyses and factors, without considering all analyses and factors, could create
a misleading or incomplete view of the process underlying its opinion. In its
analyses, Cruttenden Roth made numerous assumptions with respect to industry
performance, general business and economic conditions and other matters, many of
which are beyond the control of IWL and Telecommunications and the Partnership.
Any estimates contained in these analyses are not necessarily indicative of
actual values or predictive of future results or values, which may be
significantly more or less favorable than as set forth therein. In addition,
analyses relating to the value of businesses do not purport to be appraisals or
to reflect the prices at which businesses actually may be sold.
 
    COMPARABLE COMPANY ANALYSIS.  Using publicly available information,
Cruttenden Roth compared the financial performance of Telecommunications and the
Partnership with the following companies which were selected based on general
business, operating and financial characteristics representative of local, long
distance and fiber communications based communications companies: Winstar
Communications Inc., ICG Communications Inc., Qwest Communications International
Inc., Intermedia Communications Inc., McLeodUSA Inc., Nextlink Communications
Inc., E Spire Communications Inc. (formerly American Communications Services
Inc, ITC Deltacom Inc., Startec Global Communications Inc., Trescom
International Inc., US Wats Inc., IXC Communications Inc., Star
Telecommunications Inc., and Pacific Gateway Exchange Inc.(the "Comparable
Public Companies"). Cruttenden Roth calculated the median multiples for the
Comparable Public Companies for the equity market value plus net indebtedness,
preferred stock
 
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and minority interests ("Firm Value") to latest twelve months revenue and to
estimated fiscal 1998 and 1999 revenues. The median multiples were 7.9x, 4.9,
3.4x, respectively. The range of multiples was from 0.7x to 24.5x, 0.4x to 21.9x
and 0.3x to 6.0x, respectively. These compared to multiples of 4.8x, 3.4x and
2.1x for Telecommunications and the Partnership. Cruttenden Roth calculated the
median multiples for the Comparable Public Companies for the equity market value
plus net indebtedness, preferred stock and minority interests ("Firm Value") to
latest twelve months EBITDA and to estimated 1998 and 1999 EBITDA. The median
multiples were -13.6x, 12.3x, 12.0x, respectively. The range of multiples was
from -109.6x to 531.3x, -348.3x to 141.8x and -40.9x to 55.4x, respectively.
These compared to multiples of 36.0x, 28.3x and 16.6x for Telecommunications and
the Partnership. The ratios for Telecommunications and the Partnership are based
on financial statements for the last twelve months and period ending March 31,
1998 and the ratios for the Comparable Public Companies are based on the most
recently reported public financial statements for the last twelve months of
operations, and closing stock market prices on June 18, 1998 and the most recent
Cruttenden Roth and third party equity research reports available to Cruttenden
Roth as of June 18, 1998 that contained revenue and EBITDA projections.
 
    Cruttenden Roth noted that all of the foregoing multiples were within the
range of multiples for the Comparable Public Companies. However, because of the
inherent differences between the businesses, operations and prospects of
Telecommunications and the Partnership and the businesses, operations and
prospects of the Comparable Public Companies, Cruttenden Roth believed that it
was inappropriate to, and therefore did not, rely solely on the quantitative
result of the analysis, and accordingly also made qualitative judgments
concerning differences between the characteristics of Telecommunications and the
Partnership and the Comparable Public Companies that would affect the public
trading values of Telecommunications and the Partnership and the Comparable
Public Companies.
 
    COMPARABLE TRANSACTION ANALYSIS.  Using publicly available information,
Cruttenden Roth reviewed certain terms and financial characteristics of seven
telecommunications company merger or acquisition transactions which Cruttenden
Roth deemed to be comparable to the Merger. The transactions considered by
Cruttenden Roth in its analysis consisted of (identified by acquirer/acquiree):
Excel Communications Inc./Telco Communications Inc., LCI International Inc./USLD
Communications Corp., WorldCom Inc./ MCI Communications Corp., Teleport
Communications Group/ACC Corp., AT&T Corp./Teleport Communications Group, AvTel
Communications Inc./Matrix Telecom Inc., IXC Communications Inc./Network Long
Distance Inc., World Access Inc./NACT Telecommunications, Primus
Telecommunications/TresCom International Inc., Qwest Communications Corp./LCI
International Inc., ALLTEL Corp./360 Communications Co., and SBC Communications
Inc./Ameritech Corp. (the "Cruttenden Roth Comparable Transactions"). The median
Firm Value (using the transaction price for equity market value) to latest
twelve months revenue and EBITDA multiple for the Cruttenden Roth Comparable
Transactions was 2.9x, and 24.1x, respectively. The range of multiples was from
0.9x to 7.7x and 19.1x to 280.6x, respectively. This compared to a transaction
multiple of 4.8x and 46.7x, respectively, for the Merger based on the
consideration described in the Merger Agreement.
 
    Cruttenden Roth noted that for each of the foregoing multiples, the
transaction multiples for the Merger were within the range of multiples for the
Cruttenden Roth Comparable Transactions. However, because the reasons for and
the circumstances surrounding each of the Cruttenden Roth Comparable
Transactions analyzed were specific to each transaction and because of the
inherent differences in the businesses, operations and prospects of IWL,
Telecommunications and the Partnership and the businesses, operations and
prospects of the acquired companies included in the Cruttenden Roth Comparable
Transactions, Cruttenden Roth believed that it was inappropriate to, and
therefore did not, rely solely on the quantitative results of the analysis, and
accordingly also made qualitative judgments concerning differences between the
characteristics of these transactions and the Mergers that would affect the
acquisition values of Telecommunications and the Partnership and such acquired
companies.
 
    DISCOUNTED CASH FLOW ANALYSIS OF TELECOMMUNICATIONS AND THE
PARTNERSHIP.  Cruttenden Roth calculated the present value of the streams of
after-tax cash flows that Telecommunications and the Partnership
 
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could be expected to produce over a five and ten year period. The analysis
utilized financial and operating information relating to the business,
operations and prospects of Telecommunications and the Partnership provided by
management of Telecommunications and the Partnership and relied on certain
assumptions with respect to future business and operations. After-tax cash flows
for the five and ten year period beginning on January 1, 1998 and ending on
December 31, 2002 and 2007, respectively, were calculated as unlevered after-tax
earnings plus amortization and depreciation less net changes in non-cash,
non-debt working capital and capital expenditures. Cruttenden Roth calculated
terminal values for Telecommunications and the Partnership in 2002 and 2007 by
applying to projected EBITDA a range of multiples of 7x to 10x. Cruttenden
Roth's determination of the appropriate range of multiples was based on an
assessment of forward EBITDA trading multiples in the current market of the
Comparable Public Companies and on Cruttenden Roth's general experience in
valuations of companies. The cash flow streams and terminal values were then
discounted to present values using a range of discount rates of 16% to 25%,
which were chosen based on several assumptions regarding factors such as the
inflation rate, interest rates, the inherent business risk in Telecommunications
and the Partnership's business, and the cost of capital of Telecommunications
and the Partnership.
 
    The management of Telecommunications and the Partnership provided Cruttenden
Roth with a set of projections reflecting current expectations for
Telecommunications and the Partnership results of operations (the
"Telecommunications Case Projections"). Cruttenden Roth performed discounted
cash flow analyses and generated per share equity value ranges based on these
projections. The Telecommunications Case Projections generated a five-year per
share value range of $13.71 to $33.02. The Telecommunications Case Projections
generated a ten-year per share value range of $12.32 to $37.27.
 
    PRO FORMA MERGER ANALYSIS.  Using IWL management's financial projections for
1998 with respect to IWL and the Telecommunications Case Projections for 1998
with respect to Telecommunications and the Partnership, and making such other
assumptions it deemed necessary, Cruttenden Roth performed discounted cash flow
analysis on the pro forma forecasted results of operations and compared IWL's
estimated EPS for calendar year 1998 both on a stand-alone basis and assuming
consummation of the Merger. These estimates assume that each share of
Telecommunications Common Stock and the Partnership Interests will be exchanged
for consideration as described in the Merger Agreement. Based upon the
assumptions and estimates relied upon and including financings and other costs
associated with the build out of the combined company fiber network, Cruttenden
Roth noted that the Merger would not result in EPS accretion in the near term
for current holders of IWL Common Stock.
 
    RELATIVE PERFORMANCE ANALYSIS.  Using IWL management's financial projections
for 1998 with respect to IWL and the Telecommunications Case Projections for
1998 with respect to Telecommunications and the Partnership, and making such
other assumptions it deemed necessary, Cruttenden Roth compared the actual
results operations for the period ended March 31, 1998 for IWL,
Telecommunications and the Partnership to those results internally forecasted
prior to the announcement date of the proposed merger. Cruttenden Roth
considered revised growth rates and revenue and EBITDA variances between the
forecasted and actual results of operations in arriving at its opinion.
 
    Cruttenden Roth is a nationally recognized investment banking firm and, as
part of its investment banking activities, is regularly engaged in the
evaluation of businesses and their securities in connection with mergers and
acquisitions, negotiated underwritings, competitive bids, secondary
distributions of listed and unlisted securities, private placements and
valuations for corporate and other purposes. The IWL Board selected Cruttenden
Roth because of its expertise, reputation and familiarity with IWL in particular
and the telecommunications industry in general and because its investment
banking professionals have substantial experience in transactions similar to the
Transaction.
 
    As compensation for its services in connection with the Transaction, IWL has
agreed to pay Cruttenden Roth a fee for acting as financial advisor in
connection with the Transaction, including rendering its opinion. This fee,
which was determined by IWL and Cruttenden Roth, includes (i) a $25,000 retainer
which was payable upon signing of the engagement letter between IWL and
Cruttenden Roth,
 
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dated January 6, 1998, and which is to be credited against the remainder of the
fee to be paid as set forth in (ii) and (iii) below, (ii) $125,000 payable upon
the signing of the Merger Agreement and (iii) $225,000 payable upon the closing
the Transaction. In addition, IWL has agreed to indemnify Cruttenden Roth and
certain related persons for certain liabilities that may arise out of its
engagement by IWL and the rendering of its services.
 
    In the ordinary course of its business, Cruttenden Roth may actively trade
in IWL Common Stock and Holdings Common Stock for its own account and for the
accounts of its customers and, accordingly, may at any time hold a long or short
position in such securities. Cruttenden Roth underwrote the initial public
offering of common stock of IWL which occurred on June 12, 1997 and as a result
was paid commissions of approximately $635,000 and received a non-accountable
expense allowance of approximately $272,000 and received warrants to purchase
145,000 shares of IWL Common Stock at an exercise price per share of $7.20,
subject to adjustment pursuant to the terms of the Warrant Purchase Agreement.
 
INTERESTS OF CERTAIN PERSONS IN THE TRANSACTION
 
    In considering the respective recommendations of the IWL Board, the
Telecommunications Board and the General Partner Board with respect to the
Transaction, the holders of IWL Common Stock and the holders of
Telecommunications Common Stock and holders of the Partnership Interests should
be aware that certain members of the management of IWL and Telecommunications
have interests in the Transaction that are different from, or in addition to,
the interests of the holders of IWL Common Stock and the holders of
Telecommunications Common Stock and the holders of Partnership Interests
generally.
 
    IWL has entered into agreements with the Partnership to use the
Partnership's network for DS-3s services for five years in three segments in
Texas. The agreement regarding the first segment was entered into in September
1997 and became operative in March 1998, the agreement regarding the second
segment was entered into in September 1997 and became operative in April 1998,
and the agreement regarding the third segment was entered into in October 1997
and became operative in April 1998. The three leases each has a term of not to
exceed 60 months, with monthly payments of approximately $3,000 each once the
service is initiated. In addition, once the service is initiated, a
telecommunications agreement is entered into for traffic, with charges based
upon time and location called.
 
    EMPLOYMENT AGREEMENTS
 
    Pursuant to the terms of the Merger Agreement, upon execution thereof,
Holdings entered into an employment agreement with, among other persons, each of
Jere W. Thompson, Jr., Ignatius W. Leonards, Byron M. Allen, Richard H.
Roberson, Scott L. Roberts, Timothy W. Rogers, and Timothy M. Terrell. In
addition, on May 11, 1998, Holdings entered into an Employment Agreement with
Kevin W. McAleer. The following is a summary of the principal terms of the
Employment Agreements.
 
    Each of the Employment Agreements will be for an initial term of three
years, subject to the right of either party to terminate such agreement upon 30
days' advance written notice at any time.
 
    Pursuant to their Employment Agreements, Messrs. Thompson and Leonards have
agreed to serve as Chief Executive Officer and President of Holdings,
respectively. Each of Messrs. Thompson and Leonards will receive an annual base
salary of $180,000 and $168,000, respectively, subject to increase upon review
annually by the Board of Directors of Holdings.
 
    Pursuant to their Employment Agreements, Mr. McAleer has agreed to serve as
Senior Vice President and Chief Financial Officer of Holdings, Messrs. Allen,
Roberts, Rogers and Terrell have agreed to serve as Executive Vice Presidents of
Holdings and Mr. Roberson has agreed to serve as Controller, Treasurer and
Secretary of Holdings. Messrs. McAleer, Allen, Roberts, Rogers, Terrell and
Roberson will receive annual salaries of $200,000, $125,000, $133,333, $133,333,
$133,333 and $92,000, respectively, in each case subject to increase upon review
annually by the Board of Directors of Holdings.
 
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    Each of the Employment Agreements will provide that, at the discretion of
the Board of Directors, each employee may be paid bonus compensation and/or may
be allowed to participate in a management incentive bonus plan should one be
adopted by Holdings. Each of the Employment Agreements also provides for certain
insurance benefits and provides that the employee is eligible to participate in
all retirement and other benefit plans generally available to employees of
Holdings and any equity or other employee benefit plan of Holdings or
Telecommunications, as the case may be, that is generally available to senior
executive officers of such company. In addition, each of the Employment
Agreements will provide for certain payments and benefits in the event the
employee is terminated without cause or due to death or permanent disability.
 
    Each Employment Agreement generally provides that the employee will keep
confidential certain non-public information regarding Holdings and further
provides that, during the period specified therein (generally during the term of
employment and for two years thereafter), the employee will not, subject to
certain exceptions, own, manage, control, or participate in the ownership,
management or control of, or be employed by or otherwise associated with, or
receive compensation from or otherwise engage in, any business in which Holdings
is engaged during such restricted period, including the provision of local and
long distance telecommunications services. The restricted territory under the
Employment Agreement is generally the entire United States but in certain cases
is limited to certain southern states. Each employee further agrees that during
the restricted period he will not (i) solicit or engage the business of any
clients of Holdings or its affiliates or (ii) solicit any employee of Holdings
or its affiliates to terminate any relationship that person may have with
Holdings or its affiliates, or engage, employ or compensate any employee of
Holdings or its affiliates.
 
    CAPROCK OWNERS AGREEMENT
 
    Pursuant to the CapRock Owners Agreement dated as of February 16, 1998 (the
"CapRock Owners Agreement"), among IWL, the General Partner, certain of the
shareholders of Telecommunications and each of the partners in the Partnership,
including the General Partner (such shareholders and partners each being called
an "Owner" and collectively called the "Owners"), each Owner agreed, among other
things, to vote (or cause to be voted) the shares in Telecommunications and/or
the Partnership Interests beneficially owned by such Owner, whether theretofore
owned or thereafter acquired (and, if applicable, agreed to grant any required
consents under the limited partnership agreement of the Partnership), (i) in
favor of approval of the Merger Agreement, the Telecommunications Merger and the
Interest Exchange, in each case on the terms and subject to the conditions set
forth in the Merger Agreement, and any actions required in furtherance thereof,
including the issuance of shares of Holding Common Stock in connection with the
Mergers; (ii) against any action or agreement that would result in a breach in
any respect of any covenant, representation or warranty or any other obligation
or agreement of Telecommunications or the Partnership under the Merger Agreement
(after giving effect to any materiality or similar qualifications contained
therein); and (iii) except to the extent the action is not prohibited to be
taken by Telecommunications or the Partnership under the Merger Agreement or as
otherwise agreed to in writing in advance by IWL, against any action which is
intended, or could reasonably be expected, to impede, interfere with, materially
delay or postpone, or materially adversely affect the Telecommunications Merger,
the Interest Exchange or the transactions contemplated by the CapRock Owners
Agreement and the Merger Agreement. The foregoing agreements contained in the
CapRock Owners Agreement are subject to the condition that such agreements will
terminate upon the earlier of the Effective Time and the termination of the
Merger Agreement. As a result of these provisions of the CapRock Owners
Agreement (but subject to the condition described above), the requisite approval
of the Merger Agreement by the holders of Telecommunications Common Stock and
the holders of the Partnership Interests is assured.
 
    Each Owner has further agreed that, during the period commencing thirty days
prior to the Effective Time and continuing until the first to occur of the
Effective Time and the termination of the Merger
 
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Agreement in accordance with its terms, such Owner shall not, directly or
indirectly, except as contemplated by the Merger Agreement, offer for sale,
sell, transfer, tender, pledge, encumber, assign or otherwise dispose of, or
enter into any contract, option or other arrangement or understanding with
respect to or consent to the offer for sale, sale, transfer, tender, pledge,
encumbrance, assignment or other disposition of, any or all of such Owner's
shares in Telecommunications and/or interests in the Partnership or, in either
case, any interest therein.
 
    IWL SHAREHOLDERS AGREEMENT
 
    Pursuant to the IWL Shareholders Agreement, dated as of February 16, 1998
(the "IWL Shareholders Agreement"), among Messrs. Leonards and Allen and their
spouses (collectively, the "IWL Shareholders"), Telecommunications, and the
Partnership, each of the IWL Shareholders has agreed, among other things, to
vote (or cause to be voted) the shares of IWL Common Stock held or beneficially
owned by such IWL Shareholder (i) in favor of approval of the Merger Agreement
and any actions required in furtherance thereof, including the issuance of
shares of Holdings Common Stock in connection with the Mergers; (ii) against any
action that would result in a breach in any respect of any covenant,
representation or warranty or any other obligation or agreement of IWL under the
Merger Agreement (after giving effect to any materiality or similar
qualifications contained therein); and (iii) except to the extent any action is
not prohibited to be taken by IWL under the Merger Agreement or as otherwise
agreed to in writing in advance by Telecommunications or the Partnership,
against any action which is intended, or could reasonably be expected, to
impede, interfere with, materially delay or postpone, or materially adversely
affect the IWL Merger or the transactions contemplated by the IWL Shareholders
Agreement and the Merger Agreement. The foregoing agreement is subject to the
condition that such agreement will terminate upon the earlier of the Effective
Time and the termination of the Merger Agreement. As a result of these
provisions of the IWL Shareholders Agreement (but subject to the condition
described above), the requisite approval of the Merger Agreement by the holders
of IWL Common Stock is assured.
 
    Each of the IWL Shareholders has further agreed that, until the earlier of
the termination of the Merger Agreement and the Effective Time, such IWL
Shareholder will not, directly or indirectly, sell or otherwise transfer any of
its shares of IWL Common Stock.
 
ACCOUNTING TREATMENT
 
    IWL, Telecommunications and the Partnership expect that the Mergers and the
Interest Exchange will be accounted for using the pooling of interests method of
accounting. The pooling of interests method of accounting assumes that the
combining companies were merged from inception and the historical financial
statements for the periods prior to consummation of the Mergers and the Interest
Exchange are restated as though the companies had been combined from inception
subject to certain adjustments. It is a condition to closing that IWL,
Telecommunications and the Partnership shall each have received from KPMG Peat
Marwick LLP, their independent auditors, letters, dated the date of or shortly
prior to the Effective Time, stating its opinion that the Mergers and the
Interest Exchange all qualify for pooling of interests accounting treatment. See
"The Transaction--Accounting Treatment."
 
    The unaudited pro forma financial information contained in this Joint Proxy
Statement/Prospectus has been prepared using the pooling of interests accounting
method to account for the Mergers and the Interest Exchange. See "Unaudited Pro
Forma Condensed Combined Financial Statements."
 
CERTAIN UNITED STATES FEDERAL INCOME TAX CONSEQUENCES OF THE MERGERS
 
    The discussion below contains a summary of the opinion of tax counsel as to
the material United States federal income tax consequences of the Transaction.
The following discussion is a general summary of the material federal income tax
consequences of the Transaction and is based on the Code, the final,
 
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proposed and temporary Treasury regulations promulgated thereunder,
administrative rulings and interpretations, and judicial decisions, in each case
as in effect as of the date hereof. All of the foregoing are subject to change
at any time, possibly with retroactive effect. The discussion set forth below
does not address all aspects of federal income taxation that may be relevant to
a shareholder in light of such shareholder's particular circumstances or to
shareholders subject to special rules under the federal income tax laws, such as
non-United States persons, financial institutions, tax-exempt organizations,
insurance companies, dealers in securities or shareholders who acquired their
IWL or Telecommunications shares pursuant to the exercise of employee stock
options or otherwise as compensation, nor any consequences arising under the
laws of any state, locality or foreign jurisdiction. This discussion assumes
that holders of IWL Common Stock and holders of Telecommunications Common Stock
hold their respective shares of stock as capital assets within the meaning of
Section 1221 of the Code.
 
    None of IWL, Telecommunications, the Partnership or Holdings intends to
secure a ruling from the Internal Revenue Service with respect to the tax
consequences of the Transaction. It is a condition to the obligation of IWL to
consummate the Transaction that IWL shall have received an opinion from Munsch
Hardt to the effect that no gain or loss will be recognized by Holdings, IWL or
I-Sub as a result of the Merger of I-Sub with and into IWL in the IWL Merger and
that no gain or loss will be recognized by holders of IWL Common Stock as a
result of the IWL Merger. It is a condition to the obligation of
Telecommunications and the Partnership to consummate the Transaction that
Telecommunications shall have received an opinion from Hughes & Luce to the
effect that no gain or loss will be recognized by Holdings, Telecommunications
or C-Sub as a result of the Merger of C-Sub with and into Telecommunications in
the Telecommunications Merger, no gain or loss will be recognized by holders of
Telecommunications Common Stock as a result of the Telecommunications Merger and
no gain or loss will be recognized by the Partners as a result of the Interest
Exchange. The opinions of Munsch Hardt and Hughes & Luce referred to in this
section will be based on facts existing at the date hereof and at the Effective
Time. In rendering the opinions of counsel referred to in this section, Munsch
Hardt and Hughes & Luce assume the absence of changes in existing facts and will
rely on representations and covenants made by Holdings, IWL, Telecommunications
and the Partnership and others.
 
    TAX IMPLICATIONS TO IWL SHAREHOLDERS.  As will be set forth in the opinion
of Munsch Hardt referred to above, no gain or loss will be recognized for
federal income tax purposes by holders of IWL Common Stock who exchange their
IWL Common Stock for Holdings Common Stock pursuant to the IWL Merger.
 
    The aggregate tax basis of Holdings Common Stock received as a result of the
IWL Merger will be the same as the shareholder's aggregate tax basis in the IWL
Common Stock surrendered in the exchange. The holding period of the Holdings
Common Stock held by former holders of IWL Common Stock as a result of the
exchange will include the period during which such shareholders held the IWL
Common Stock exchanged.
 
    TAX IMPLICATIONS TO TELECOMMUNICATIONS SHAREHOLDERS.  As will be set forth
in the opinion of Hughes & Luce referred to above, no gain or loss will be
recognized for federal income tax purposes by holders of Telecommunications
Common Stock as a result of the Telecommunications Merger.
 
    The aggregate tax basis of Holdings Common Stock received as a result of the
Telecommunications Merger will be the same as the shareholder's aggregate tax
basis in the Telecommunications Common Stock surrendered in the exchange. The
holding period of the Holdings Common Stock held by former holders of
Telecommunications Common Stock as a result of the exchange will include the
period during which such shareholder held the Telecommunications Common Stock
exchanged.
 
    TAX IMPLICATIONS TO HOLDINGS, IWL, TELECOMMUNICATIONS, I-SUB AND C-SUB.  No
gain or loss will be recognized for federal income tax purposes by Holdings,
IWL, Telecommunications, I-Sub or C-Sub as a result of the formation of
Holdings, I-Sub and C-Sub and the Mergers.
 
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<PAGE>
    SHAREHOLDERS SHOULD CONSULT THEIR OWN TAX ADVISORS AS TO THE PARTICULAR TAX
CONSEQUENCES TO THEM OF THE TRANSACTION, INCLUDING THE APPLICABILITY AND EFFECT
OF FOREIGN, STATE, LOCAL AND OTHER TAX LAWS AND THE EFFECT OF ANY PROPOSED
CHANGES IN THE TAX LAWS.
 
CERTAIN UNITED STATES FEDERAL INCOME TAX CONSEQUENCES OF THE INTEREST EXCHANGE
 
    The following discussion is a general summary of the material federal income
tax consequences of the Interest Exchange and is based on the provisions of the
Code, the final, proposed and temporary Treasury regulations promulgated
thereunder, administrative rulings and interpretations, and judicial decisions,
in each case as in effect as of the date hereof. All of the foregoing are
subject to change at any time, possibly with retroactive effect. The discussion
set forth below does not address all aspects of federal income taxation that may
be relevant to a holder of a Partnership Interest (a "Partner") in light of such
Partner's particular circumstances or to Partners subject to special rules under
the federal income tax laws, such as non-United States persons, financial
institutions, tax-exempt organizations, insurance companies, dealers in
securities or Partners who acquired their Partnership Interest pursuant to the
exercise of employee equity options or otherwise as compensation, nor any
consequences arising under the laws of any state, locality or foreign
jurisdiction. This discussion assumes that Partners hold their Partnership
Interest as a capital asset within the meaning of Section 1221 of the Code.
 
    None of the Partnership, the General Partner or Holdings intends to secure a
ruling from the Internal Revenue Service with respect to the tax consequences of
the Interest Exchange. It is a condition to the obligation of the Partnership to
consummate the Interest Exchange that the Partnership shall have received an
opinion from Hughes & Luce to the effect that no gain or loss will be recognized
for federal income tax purposes by the Partners upon their exchange of
Partnership Interests for shares of Holdings Common Stock pursuant to the
Interest Exchange. The opinions of Hughes & Luce referred to in this section
will be based on facts existing at the date hereof and at the Effective Time. In
rendering the opinion of counsel referred to in this section, Hughes & Luce will
assume the absence of changes in existing facts and will rely on representations
and covenants made by Holdings, IWL, Telecommunications and the Partnership and
others.
 
    PRE-INTEREST EXCHANGE OPERATIONS OF THE PARTNERSHIP.  The Partnership has
elected for federal income tax purposes to be taxed as a corporation as of
January 1, 1998. Although this election does not change the Partnership's
characterization as a partnership for state law purposes, the Partnership will
be regarded as a corporation for all federal income tax purposes as of such
time. Consequently, as of January 1, 1998, the Partnership itself will be
subject to the federal corporate income tax, and the Partnership's income and
deductions will no longer be allocated among and reported by the Partners.
 
    The tax consequences to a Partner who receives shares of Holdings Common
Stock as a result of the Interest Exchange will be as follows:
 
    NON-RECOGNITION.  No gain or loss will be recognized for federal income tax
purposes by the Partners who exchange their Partnership Interests for Holdings
Common Stock.
 
    TAX BASIS AND HOLDING PERIOD.  A Partner's aggregate tax basis in all shares
of Holdings Common Stock received in the Interest Exchange will equal the
Partner's aggregate tax basis in the Partner's Partnership Interest. This basis
will be prorated among all shares of Holdings Common Stock received by the
Partner. The holding period required for taxation of long-term capital gains at
a maximum rate of twenty percent (20%) is more than eighteen (18) months. A
Partner's holding period for the Holdings Common Stock received in the Interest
Exchange will include the holding period of the Partnership Interest surrendered
in exchange therefor.
 
    CONTROL ASSUMPTION.  The above conclusions are based on the assumption that
the Partners, together with the holders of IWL Common Stock and the holders of
Telecommunications Common Stock, will
 
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remain in control (within the meaning of Section 351 of the Code) of Holdings
immediately following the Interest Exchange (the "Control Assumption"). Neither
the Partnership nor the General Partner is aware of any contracts that have been
or will be entered into prior to the Interest Exchange which would make the
Control Assumption incorrect. If the Control Assumption were not correct, each
Partner might be required to recognize gain or loss on the transfer of their
Partnership Interests to Holdings as if such Partner had sold the Partner's
Partnership Interest in exchange for an amount equal to the value of the
Holdings Common Stock received in the Interest Exchange. Moreover, each
Partner's basis in the Holdings Common Stock received would be increased (or
reduced) by the gain (or loss) recognized, and each Partner's holding period in
the shares of Holdings Common Stock received would begin on the day after the
Interest Exchange.
 
    PARTNERS SHOULD CONSULT THEIR OWN TAX ADVISORS AS TO THE PARTICULAR TAX
CONSEQUENCES TO THEM OF THE INTEREST EXCHANGE, INCLUDING THE APPLICABILITY AND
EFFECT OF FOREIGN, STATE, LOCAL AND OTHER TAX LAWS AND THE EFFECT OF ANY
PROPOSED CHANGES IN THE TAX LAWS.
 
REGULATORY APPROVALS
 
    STATE AND FEDERAL REGULATORY APPROVALS.  The Transaction is also subject to
certain other state and federal regulatory approvals. It is expected that the
Transaction will require prior approval by the appropriate telecommunications
agencies, commonly known as public service commissions or public utility
commissions, governing telecommunications services (the "State Commissions") in
approximately eight states. All such requests for approval have been filed.
Although the Transaction does not require approval of the State Commissions in
the remaining states, notice of the Transaction has been filed with each of
those State Commissions. The governing legal standard varies from state to
state, but approval of the Transaction generally requires a showing that it is
consistent with the public interest.
 
    IWL and Telecommunications each hold global authority from the FCC to
provide resale of switched services, and IWL holds global authority from the FCC
to provide private line and facilities-based services. IWL and
Telecommunications each maintain an international tariff on file with the FCC.
As a result, the Transaction will require the prior approval of the FCC. A
request for such approval has been filed. The standard for approval by the FCC
is that the Transaction must be consistent with the public interest.
 
    It is possible that the FCC or one or more of the State Commissions may fail
to provide the requested approval, or may seek, as a condition of approval,
various regulatory concessions. Under the Merger Agreement, receipt of all
regulatory approvals by each of IWL, Telecommunications and the Partnership, as
applicable, from the FCC and the State Commissions of Texas, Louisiana, Arkansas
and Oklahoma is a condition to the obligation of each of IWL, Telecommunications
and the Partnership to consummate the Transaction, and either party may deem
that this condition has not been satisfied if any of such regulatory bodies
conditions its approval upon concessions which would be expected to have a
Material Adverse Effect on Holdings, IWL, Telecommunications or the Partnership.
There can be no assurance that the required regulatory approvals will be
obtained within the time frame contemplated by the Merger Agreement or on terms
that are satisfactory to the parties.
 
NASDAQ LISTING
 
    Holdings has applied for the listing of Holdings Common Stock on the Nasdaq
National Market and anticipates that its shares will trade on the Nasdaq
National Market, upon official notice of issuance, under the symbol "CPRK." It
is a condition to the Mergers and the Interest Exchange that the shares of
Holdings Common Stock issuable in the Mergers and the Interest Exchange be
approved for listing on the Nasdaq National Market.
 
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<PAGE>
DELISTING AND DEREGISTRATION OF IWL COMMON STOCK; CESSATION OF PERIODIC
  REPORTING
 
    If the Mergers are consummated, IWL Common Stock will cease to be listed on
the Nasdaq National Market. In such event, IWL intends to apply to the
Commission for the deregistration of such securities.
 
FEDERAL SECURITIES LAWS CONSEQUENCES
 
    All shares of Holdings Common Stock received by holders of IWL Common Stock,
holders of Telecommunications Common Stock and holders of Partnership Interests
in the Mergers and the Interest Exchange will be freely transferable, except
that shares of Holdings Common Stock received by persons who are deemed to be
"affiliates" (as such term is defined under the Securities Act) of IWL,
Telecommunications or the Partnership prior to the Transaction may be resold by
them only in transactions permitted by the resale provisions of Rule 145
promulgated under the Securities Act (or Rule 144 in the case of such persons
who become affiliates of Holdings) or as otherwise permitted under the
Securities Act. Persons who may be deemed to be affiliates of IWL,
Telecommunications, the Partnership or Holdings generally include individuals or
entities that control, are controlled by, or are under common control with, such
party and may include certain officers and directors of such party as well as
principal shareholders of such party. Each affiliate of IWL, Telecommunications
and the Partnership has agreed that such person will not offer or sell or
otherwise dispose of any of the shares of Holdings Common Stock issued to such
person in the Mergers and the Interest Exchange in violation of the Securities
Act or the rules and regulations promulgated thereunder.
 
APPRAISAL RIGHTS
 
    Article 5.11 of the TBCA provides for appraisal rights in the case of a plan
of merger or exchange or a sale of all or substantially all of the corporation's
assets where shareholder approval is required. No appraisal rights are available
for a plan of merger or plan of exchange if (i) the shares of the corporation
held by the shareholder are listed on a national securities exchange or on the
Nasdaq Stock Market or are held of record by not less than 2,000 holders and
(ii) the shareholder is not required to accept any consideration other than (a)
shares of a corporation that will be listed or authorized for listing upon
official notice of issuance on a national securities exchange or approved for
quotation as a national market security by the NASD or will be held of record by
not less than 2,000 holders and (b) cash in lieu of fractional shares.
Accordingly, holders of Telecommunications Common Stock will be entitled to
appraisal rights in the Telecommunications Merger, but holders of IWL Common
Stock will not.
 
    Set forth below is a summary of the procedures relating to the exercise of
the right to dissent as provided in the TBCA. The summary does not purport to be
complete and is qualified in its entirety by reference to Articles 5.11, 5.12
and 5.13 of the TBCA, copies of which are attached hereto as Appendix V. FAILURE
TO COMPLY WITH ANY OF THE REQUIRED STEPS MAY RESULT IN TERMINATION OF A
SHAREHOLDER'S RIGHT TO DISSENT.
 
    Each Telecommunications shareholder has a right to dissent which can be
exercised only by complying with the following procedures: (i) with respect to
the proposal to approve the Merger Agreement that is being submitted to a vote
of the Telecommunications shareholders at the Telecommunications Special
Meeting, the shareholder must file with Telecommunications, prior to the
Telecommunications Special Meeting, a written objection to the Merger Agreement,
setting out that the shareholder's right to dissent will be exercised if the
Telecommunications Merger is effected and giving the shareholder's address to
which notice thereof shall be delivered or mailed in the event that the
Telecommunications Merger is effected; and (ii) if the Telecommunications Merger
is effected and the shareholder shall not have voted in favor of the Merger
Agreement, Telecommunications shall, within ten days after the
Telecommunications Merger is effective, deliver or mail to the shareholder
written notice that the Telecommunications Merger has been effected, and the
shareholder may, within ten days from the delivery or mailing of the notice,
 
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make written demand on Telecommunications for payment of the fair value of the
shareholder's shares of Telecommunications Common Stock.
 
    A shareholder who votes in favor of the Merger Agreement will be deemed to
have waived the right to dissent. However, as described above, a vote against
the Merger Agreement alone will not satisfy the requirements of the TBCA
relative to the right to dissent.
 
    The fair value of the Telecommunications Common Stock shall be the value
thereof as of the day immediately preceding the Telecommunications Special
Meeting, excluding any appreciation or depreciation in anticipation of the
Telecommunications Merger. The demand shall state the number of shares of
Telecommunications Common Stock owned by the shareholder and the fair value of
such shares as estimated by the shareholder. Any shareholder failing to make
demand within the ten-day period shall be bound by the Merger Agreement and the
Telecommunications Merger. Within twenty days after demanding payment for his
shares, each holder of certificates formerly representing shares of
Telecommunications Common Stock so demanding payment shall submit such
certificates to Telecommunications for notation thereon that such demand has
been made. The failure of holders of such certificates to do so shall, at the
option of Telecommunications, terminate such shareholder's rights to dissent,
unless a court of competent jurisdiction for good and sufficient cause shown
shall otherwise direct.
 
    Any shareholder who has demanded payment for his shares in accordance with
the TBCA shall not thereafter be entitled to vote or exercise any other rights
of a shareholder except the right to receive payment for his shares of
Telecommunications Common Stock in accordance with the TBCA and the right to
maintain an appropriate action to obtain relief on the ground that the
Telecommunications Merger would be or was fraudulent. The respective shares of
Telecommunications Common Stock for which payment has been properly demanded
shall not thereafter be considered outstanding for the purposes of any
subsequent vote of Telecommunications shareholders.
 
    Within twenty (20) days after receipt by Telecommunications of a demand for
payment made by a dissenting shareholder, Telecommunications shall deliver or
mail to the dissenting shareholder a written notice that shall either: (i) state
that Telecommunications accepts the amount claimed in the demand and agrees to
pay that amount within ninety (90) days after the date on which the
Telecommunications Merger was effected, upon the surrender of the share
certificates duly endorsed, or (ii) contain an estimate by Telecommunications of
the fair value of the shares of Telecommunications Common Stock, together with
an offer to pay the amount of that estimate within ninety (90) days after the
date on which the Telecommunications Merger was effected, upon receipt of notice
within sixty (60) days after that date from the shareholder that the shareholder
agrees to accept that amount, upon the surrender of the certificates duly
endorsed.
 
    If, within sixty (60) days after the date on which the Telecommunications
Merger was effected, the value of the shares of Telecommunications Common Stock
is agreed upon between the shareholder and Telecommunications, payment for the
shares shall be made within ninety (90) days after the date on which the
Telecommunications Merger was effected and, in the case of shares represented by
certificates, upon surrender of the share certificates duly endorsed.
 
    If, within the period of sixty (60) days after the date on which the
Telecommunications Merger was effected, the dissenting shareholder and
Telecommunications do not so agree, then the shareholder or Telecommunications
may, within sixty (60) days after the expiration of such sixty (60) day period,
file a petition in any court of competent jurisdiction in Dallas County, Texas
asking for a finding and determination of the fair value of the shareholder's
shares of Telecommunications Common Stock. The clerk of the court shall give
notice of the time and place fixed for the hearing of the petition by registered
mail to Telecommunications and to the shareholders who have demanded payment for
their shares and with whom agreements as to the value of their shares have not
been reached by Telecommunications. Telecommunications and all
Telecommunications shareholders so notified shall be bound by the final judgment
of such court.
 
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<PAGE>
    After the hearing on the petition, the court shall determine the
shareholders who have complied with the provisions of Article 5.12 of the TBCA
and have become entitled to the valuation of and payment for their shares, and
shall appoint one or more qualified appraisers to determine that value. In
addition to having the power to examine the books and records of
Telecommunications, the appraisers shall afford a reasonable opportunity to the
interested parties to submit to the appraisers pertinent evidence as to the
value of the shares of Telecommunications Common Stock.
 
    The appraisers shall determine the fair value of the shares of the
shareholders adjudged by the court to be entitled to payment for their shares
and shall file their report of that value in the office of the court clerk.
Notice of the filing of the report shall be given by the clerk to the parties in
interest. The report shall be subject to exceptions to be heard before the court
both upon the law and the facts. The court shall by its judgment determine the
fair value of the shares of the shareholders entitled to payment for their
shares and shall direct the payment of that value by Telecommunications together
with interest thereon, beginning 91 days after the date on which the
Telecommunications Merger was effected to the date of such judgment, to the
shareholders entitled to payment. The judgment shall be payable to the holders
of shares represented by certificates only upon, and simultaneously with, the
surrender to Telecommunications of duly endorsed certificates for those shares.
Upon payment of the judgment, the dissenting shareholders shall cease to have
any interest in those shares or in Telecommunications. The court shall allow the
appraisers a reasonable fee as court costs, and all costs shall be allocated
between the parties in the manner that the court determines to be fair and
equitable.
 
    Pursuant to the Merger Agreement, Telecommunications shareholders exercising
their right to dissent under the TBCA will be entitled to payment solely out of
the historic assets of Telecommunications.
 
    Any Telecommunications shareholder who ultimately receives payment for
Telecommunications Common Stock pursuant to Article 5.11 through 5.13 of the
TBCA, will not be converted into Holdings Common Stock pursuant to the Merger
Agreement, but the holder thereof will only be entitled to such rights as are
granted by the TBCA.
 
    Any shareholder who has demanded payment for his shares of
Telecommunications Common Stock in accordance with the TBCA may withdraw such
demand at any time before payment for his shares or before any petition has been
filed pursuant to the TBCA asking for a finding and determination of the fair
value of such shares, but no such demand may be withdrawn after such payment has
been made or, unless Telecommunications shall consent thereto, after any such
petition has been filed. However, if: (i) such demand shall be withdrawn as
hereinbefore provided, (ii) pursuant to the TBCA, Telecommunications shall
terminate the shareholder's rights to dissent under the TBCA, (iii) no petition
asking for a finding and determination of fair value of such shares of
Telecommunications Common Stock by a court shall have been filed within the time
provided in the TBCA, or (iv) after the hearing of a petition filed pursuant to
the TBCA, the court shall determine that such shareholder is not entitled to the
relief provided by the TBCA, then, in any such case, such shareholder and all
persons claiming under him shall be conclusively presumed to have approved and
ratified the Telecommunications Merger and shall be bound thereby, the right of
such shareholder to be paid the fair value of his shares shall cease, his status
as a shareholder shall be restored without prejudice to any corporate
proceedings which may have been taken during the interim, and such shareholder
shall be entitled to receive any dividends or other distributions made to
shareholders in the interim.
 
    If after the Effective Time a dissenter loses the right to receive payment
pursuant to Articles 5.11 through 5.13 of the TBCA, then upon the occurrence of
such event, such holder's shares will automatically be converted into Holdings
Common Stock effective as of the Effective Time, but upon surrender of the
certificate representing such shares, without prejudice to any corporate
proceedings which may have been taken during the interim period between the
Effective Time and the occurrence of such event, and such shareholder will be
entitled to receive any dividends or other distributions made to shareholders
during such interim period.
 
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    Exercise of the right to dissent under the TBCA, if such right is available,
may result in a judicial determination that the "fair value" of a dissenting
shareholder's shares of Telecommunications Common Stock is higher or lower than
the value of the consideration to be received pursuant to the Merger Agreement.
 
    In general, a dissenting shareholder receiving cash for his
Telecommunications shares pursuant to the exercise of his or her appraisal
rights will recognize gain or loss for federal income tax purposes upon receipt
of the payment of the cash. See "--Federal Income Tax Consequences."
 
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<PAGE>
                              BUSINESS OF HOLDINGS
 
    Holdings is a Texas corporation that was formed on February 3, 1998 to be a
holding company for IWL, Telecommunications and the Partnership and their
respective subsidiaries following the consummation of the Mergers and the
Interest Exchange. Prior to the consummation of the Transaction, Holdings has
had and will have no operations other than those incident to its formation, its
execution of the Merger Agreement, the preparation of this Joint Proxy
Statement/Prospectus and, possibly, the incurrence of the Proposed Notes. See
"Offering of Proposed Notes." Holdings currently has no operations and nominal
or no assets and liabilities, and, unless the context otherwise requires, all
discussions herein of the historical and planned business operations and
strategy of Holdings assumes, on a pro forma basis, that the proposed business
combination to be effected by the Mergers and Interest Exchange has been
consummated. On such pro forma basis, Holdings would have had 1997 revenues and
net income of approximately $75.3 million and $2.6 million, respectively. Prior
to the mailing of this Joint Proxy Statement/Prospectus, Holdings, which was
incorporated as "IWL Holdings Corp.," changed its name to "CapRock
Communications Corp." and, in connection therewith, Telecommunications changed
its name from "CapRock Communications Corp." to "CapRock Telecommunications
Corp."
 
    Holdings intends to become the leading facilities-based ICP in Texas and the
Gulf Coast region. The combined businesses will offer a complete suite of
telecommunications services including local, long distance, Internet, data and
private line services to small and medium-sized businesses. Holdings will also
provide switched and dedicated access, domestic and international long distance,
private lines and dark fiber to carrier customers. Holdings believes the
Transaction will enable it to significantly accelerate the implementation of its
business plan and to more rapidly achieve its business objectives by: (i)
enhancing its revenue opportunities by leveraging the existing and planned fiber
and switching network infrastructure of each company to offer voice, data, and
broadband services in markets geographically clustered along or near the
Company's infrastructure, (ii) creating greater organizational depth through the
combination of the sales, customer service and networking strengths of
Telecommunications with the technological, project management, and last mile
distribution expertise of IWL and the fiber network construction and operational
expertise of the Partnership, (iii) providing the opportunity to cross-sell its
products and provide single source onshore and offshore communications solutions
to IWL's existing base of oil and gas customers and to Telecommunications'
existing base of business and carrier customers throughout Texas and the Gulf
Coast region, (iv) capitalizing on international revenue opportunities through
the combination of Telecommunications' customer base, the Partnership's planned
network and IWL's relationships with foreign regulators and communications
providers and (v) reducing the combined capital expenditures of the three
companies through the construction of a single communications infrastructure.
 
BUSINESS STRATEGY
 
    Holdings' business objectives are (i) to become the leading ICP in Texas and
the Gulf Coast region, offering local, long distance, data and private line
services to end-user customers, (ii) to establish itself as the premier
carriers' carrier in Texas and the Gulf Coast region, providing voice, data and
broadband services over the most extensive alternative fiber optic network in
Texas and the Gulf Coast region, and (iii) to capitalize on the growing
opportunities to provide international long distance and international project
services. To achieve these objectives, Holdings intends to:
 
    BECOME A SINGLE SOURCE PROVIDER OF COMMUNICATIONS AND NETWORK INTEGRATION
SERVICES.  Holdings believes that there is significant demand among small and
medium-sized business customers in its target markets for an integrated package
of communications services and equipment tailored to satisfy the customer's
total communications needs. Holdings intends to offer its customers local,
domestic and international long distance, data (including ATM, frame relay,
digital subscriber line and Internet) and broadband (including T-1/E-1, DS-3,
OC-N and dark fiber) services. Holdings believes that its ability to provide an
integrated package of communications services, to provide, install and maintain
a broad range of communications equipment and to invoice these services on a
single, convergent bill will enable it to
 
                                       76
<PAGE>
rapidly penetrate its targeted markets, capture virtually all of its customers'
expenditures for telecommunications services and equipment, increase customer
satisfaction and reduce customer turnover.
 
    STRATEGICALLY BUILD OUT ITS REGIONAL FIBER NETWORK.  Holdings intends to
expand the Partnership's fiber optic network to approximately 4,300 miles
throughout Texas and the Gulf Coast region. Holdings' fiber optic backbone will
provide it with a platform to offer an integrated package of voice, data and
broadband services, as well as to access primary, secondary and tertiary cities
and the tandems of ILECs throughout Texas and the Gulf Coast region. The
Partnership owns and operates 260 route miles of fiber network in Texas
extending from Houston to Victoria and Corpus Christi, and is currently
constructing an additional 500 route miles in Texas from San Antonio to Laredo,
McAllen, Harlingen, Brownsville and Corpus Christi. The completion of Holdings'
network will allow it to originate and terminate most of its customers voice and
data traffic within the region on-net, dramatically increase its available
broadband capacity and link together more markets than other competitive
providers of communications services in the region.
 
    OFFER DATA, INTERNET AND ENHANCED SERVICES TO ACCELERATE MARKET PENETRATION
AND MINIMIZE POTENTIAL CHURN.  Data services represent one of the fastest
growing product segments in the communications industry. Holdings believes it
can accelerate new account penetration and minimize potential churn by offering
LAN interconnections, frame relay, ATM, Internet services, ISDN, DSL, Web page
design, Web server hosting, and other enhanced services not generally available
or from the ILECs (or available only at prices higher than those Holdings
intends to charge). Holdings intends to leverage its expertise in providing data
services by targeting small and medium-sized business customers, as well as
data-intensive and multi-point customers, such as banks, financial institutions
and health care providers.
 
    BUILD MARKET SHARE THROUGH PERSONALIZED SALES AND CUSTOMER
SERVICE.  Holdings believes the most effective method of acquiring and retaining
a high quality customer base is through a consultative, face-to-face sales
process to develop creative solutions and respond rapidly to customers'
communications needs, as well as providing superior and personalized customer
service. Holdings believes that small and medium-sized business customers in its
target markets have been neglected by the ILECs with respect to these
approaches. Holdings intends to significantly increase the size of its direct
and agent sales forces over the next three years.
 
    DEVELOP EFFICIENT AUTOMATED BACK OFFICE SYSTEMS.  Holdings will handle its
provisioning, customer care, convergent billing and traffic reporting functions
on a proprietary software platform currently being jointly developed by
Telecommunications and a related party. These OSS and other back office systems
are required to enter, schedule and track a customer's order from the point of
sale to the installation and testing of service. These systems also include or
interface with trouble management, inventory, billing, collection and customer
service systems. The system is scalable and flexible to support Holdings'
expected future back office requirements. The system, when fully implemented,
will enable Holdings to: (i) minimize the time to initiate local and long
distance services for new customers internally and through the ILEC (commonly
referred to as provisioning), (ii) provide detailed and customized customer
billing information, (iii) respond quickly to customers' needs and information
requests, and (iv) monitor and analyze traffic, financial and operating trends.
Holdings believes that this system, when fully implemented, will provide a
significant competitive advantage in terms of cost, ability to process large
order volumes, and customer service as compared to ILECs using legacy systems
and CLECs that outsource back-office services or that do not have an advanced
OSS platform.
 
    EXPAND INTERNATIONAL SERVICE OFFERINGS.  Holdings believes that it can
leverage IWL's existing international commercial relationships, regulatory
expertise and points of presence in Texas, Russia and Scotland with
Telecommunications' extensive relationships with domestic carriers to
significantly increase Holdings' international traffic.
 
                                       77
<PAGE>
    PURSUE ACQUISITIONS AND STRATEGIC ALLIANCES.  In Holdings' target markets, a
large number of small private companies provide local and long distance
services, data services, Internet services, and telecommunications equipment.
This fragmentation creates numerous opportunities for Holdings to acquire
industry participants that can provide technical support, management talent,
customers and product extensions and could enable Holdings to accelerate the
implementation of its business plan. Holdings also intends to pursue strategic
relationships with utilities, state transportation departments and other
governmental authorities.
 
    LEVERAGE ITS EXPERIENCED MANAGEMENT TEAM.  Holdings' management team will
include individuals with significant experience in the deployment and marketing
of communications services. Jere W. Thompson, Jr., President of
Telecommunications and Chief Executive Officer of Holdings, founded the
Partnership in 1992. Ignatius W. Leonards, Chief Executive Officer of IWL and
President of Holdings, founded IWL in 1981 and has over 23 years of experience
in the telecommunications industry. Timothy W. Rogers, Timothy M. Terrell and
Scott L. Roberts, each Executive Vice Presidents of Telecommunications and
Holdings founded Telecommunications in 1991 and have a combined 33 years of
telecommunications experience working at Sprint, Qwest and Telecommunications in
carrier and commercial sales. Byron M. Allen, President of IWL and an Executive
Vice President of Holdings, has five years of experience in the domestic and
international telecommunications industry, and Kevin W. McAleer, Holding's Chief
Financial Officer, has over 16 years of experience as the chief financial
officer of publicly-held companies.
 
                      DIRECTORS AND MANAGEMENT OF HOLDINGS
 
DIRECTORS
 
    BOARD.  It is expected that, following the consummation of the Transaction,
the Board of Directors of Holdings will consist of Jere W. Thompson, Jr.,
Ignatius W. Leonards, Byron M. Allen, Mark Langdale, Timothy W. Rogers, one
outside director designated by IWL (who will initially be Christopher J.
Amenson) and one outside director designated by Telecommunications (who will
initially be John R. Harris) provided that IWL and Telecommunications each has
the right to veto the other's designee.
 
COMMITTEES OF HOLDINGS
 
    The Holdings Board has established a Compensation Committee ("Holdings
Compensation Committee") consisting of Christopher J. Amenson and John R. Harris
(effective upon consummation of the Transaction). All members of the Holdings
Compensation Committee will be "Non-Employee Directors" within the meaning of
Rule 16b-3 of the Exchange Act and "outside directors" within the meaning of
Section 162(m) of the Code. The Holdings Compensation Committee will be
responsible for establishing salaries, bonuses, and other compensation for
Holdings' executive officers and for administering the Equity Incentive Plan
(including granting options and other awards and setting the terms thereof
pursuant to such plan) and Holdings' other executive compensation plans and
programs. In the event that at any time any members of the Holdings Compensation
Committee fail to qualify as "Non-Employee Directors" within the meaning of Rule
16b-3 under the Exchange Act, the entire board of directors will also approve
stock option grants and other awards.
 
    The Holdings Board has established an audit committee consisting of
Christopher J. Amenson and John R. Harris (effective upon consummation of the
Transaction). The audit committee will be responsible for reviewing Holdings'
annual audit and meeting with Holdings' independent accountants to review
Holdings' internal controls and financial management practices.
 
COMPENSATION OF DIRECTORS AND OFFICERS
 
    Directors who are employees of Holdings or its subsidiaries will not receive
any compensation for service on the Holdings Board, but employee directors will
be reimbursed by Holdings for expenses incurred in attending meetings of the
Holdings Board or any committees thereof. In order to more closely
 
                                       78
<PAGE>
align the interests of directors and shareholders, non-employee directors of
Holdings will be eligible to participate in the Director Stock Option Plan,
pursuant to which each will be eligible to receive Nonqualified Options. See
"The Plan Proposals--The Director Stock Option Plan."
 
    The directors and the senior management team of Holdings is expected to be
comprised of the following individuals, upon consummation of the Transaction,
many of whom are currently officers and/or directors of IWL or
Telecommunications:
 
<TABLE>
<CAPTION>
<S>                                                       <C>
Jere W. Thompson, Jr....................................  Chairman of the Board, Chief Executive Officer and
                                                            Director
Ignatius W. Leonards....................................  Vice Chairman of the Board, President and Director
Kevin W. McAleer........................................  Senior Vice President and Chief Financial Officer
Byron M. Allen..........................................  Executive Vice President and Director
Timothy M. Terrell......................................  Executive Vice President
Timothy W. Rogers.......................................  Executive Vice President and Director
Scott L. Roberts........................................  Executive Vice President
Richard H. Roberson.....................................  Controller, Treasurer and Secretary
Mark Langdale...........................................  Director
Christopher J. Amenson..................................  Director
John R. Harris..........................................  Director Nominee*
</TABLE>
 
- ------------------------
 
*Mr. Harris has consented to becoming a director upon consummation of the
 Transaction.
 
    The following provides certain information regarding Messrs. McAleer and
Harris as of June 1, 1998:
 
    Mr. Kevin W. McAleer, age 47, has served as Senior Vice President and Chief
Financial Officer of the Company since April 1998. From 1996 to 1998, Mr.
McAleer served as Chief Financial Officer, Secretary and as a member of the
Executive Management Committee of American Pad and Paper Co., one of the largest
manufacturers and marketers of paper-based office products in North America.
From 1990 to 1996, Mr. McAleer served as Executive Vice President, Chief
Financial Officer and as a member of the Executive Management Committee of
Rexene Corporation, which manufactures plastic film and plastic resins. From
1985 to 1990, Mr. McAleer served as Senior Vice President--Administration, Chief
Financial Officer, Secretary and Treasurer, and as a member of the Executive
Management Committee and the Board of Directors of Varo, Inc., which
manufactures electronics supplied primarily to U.S. military agencies, such as
proprietary night vision systems, high-reliability power systems and airborne
missile launchers. From 1981 to 1985, Mr. McAleer served as Vice President
Finance, Chief Financial Officer, Secretary and Treasurer, and as a member of
the Executive Management Committee of Tocom, Inc., which designs and
manufactures high-technology communications products and services for the cable
industry. Mr. McAleer is a certified public accountant and is a member of the
American Institute of Certified Public Accountants and the Texas Society of
Certified Public Accountants. Mr. McAleer has a B.S. in Accounting/ Economics
from LaSalle University in Philadelphia, Pennsylvania.
 
    Mr. John R. Harris, age 49, has been a Corporate Vice President at
Electronic Data Systems Corp. ("EDS") since 1997 where he is responsible for
marketing and corporate strategy. From 1989 to 1997, he served as a Vice
President of the Communications Industry Group at EDS where he was responsible
for four business units directed toward wirelines, wireless, media and
interactive services. Mr. Harris is on the Board of Directors of Applied
Graphics Technologies, Inc., an independent provider of digital prepress
services. Mr. Harris received his undergraduate and graduate degrees in business
administration from West Georgia University.
 
    For biographical and other information regarding Messrs. Thompson, Terrell,
Rogers, Roberts and Langdale, see "Information Regarding
Telecommunications--Directors and Executive Officers." For
 
                                       79
<PAGE>
biographical and other information regarding Messrs. Leonards, Allen, Roberson
and Amenson, see "Information Regarding IWL--Directors and Executive Officers."
 
EXECUTIVE COMPENSATION
 
    For information regarding compensation paid to executive officers of
Telecommunications, the General Partner and IWL in 1997, including the
individuals named above, see "Information Regarding
Telecommunications--Executive Compensation," "Information Regarding the
Partnership--Executive Compensation," and "Information Regarding IWL--Executive
Compensation," respectively. The Holdings Board will rely on the Holdings
Compensation Committee, which will be composed of Non-Employee Directors, to
recommend the form and amount of compensation to be paid to executive officers
of Holdings who do not have an employment agreement with Holdings. For
information regarding employment agreements with certain of the above
individuals, see "The Transaction--Interests of Certain Persons in the
Transaction--Employment Agreements."
 
                             OWNERSHIP OF HOLDINGS
 
    There are currently 1,000 shares of Holdings Common Stock outstanding, all
of which are owned by IWL and will be canceled in the IWL Merger. It is
anticipated that, after giving effect to the Mergers, approximately 28,910,222
shares of Holdings Common Stock will be issued and outstanding, approximately
828,385 additional shares will be reserved for issuance upon the exercise of
options and warrants to acquire IWL Common Stock and Telecommunications Common
Stock assumed by Holdings and approximately 5,400,000 additional shares will be
available for issuance in connection with grants made after the Effective Time
under the Equity Incentive Plan and the Director Stock Option Plan.
 
    The following table sets forth information concerning the beneficial
ownership of Holdings Common Stock after giving effect to the Mergers and the
Interest Exchange, (and assuming all Partnership Interests are tendered pursuant
to the Exchange Offer,) by (i) each person or group of persons known to IWL,
Telecommunications or the Partnership expected to beneficially own more than
five percent (5%) of the outstanding shares of Holdings Common Stock, (ii) each
person who is (or, upon consummation of the Mergers and the Interest Exchange,
will be) an executive officer, director or director nominee of Holdings and
(iii) all such executive officers and directors of Holdings as a group. The
information contained in this table with respect to beneficial ownership
reflects "beneficial ownership" as defined in Rule 13d-3 under the Exchange Act,
which means generally any person who, directly or indirectly, has or shares
voting power or investment power with respect to a security. Shares of Holdings
Common Stock not outstanding but deemed beneficially owned by virtue of the
right of an individual or group to acquire shares within 60 days after May 31,
1998 are treated as outstanding only when determining the amount and percentage
of Holdings Common Stock owned by such individual or group. All information with
respect to the beneficial ownership of any principal shareholder was furnished
by such principal shareholder and Holdings believes that, except as otherwise
noted or pursuant to community property laws, each shareholder has sole voting
and investment power with respect to shares shown. The address for Messrs.
Leonards, Allen and Roberson is 12000 Aerospace Ave., Suite 200, Houston, Texas
77034. The address for Messrs. Thompson, Rogers, Roberts, Terrell, McAleer and
CapRock Investors is Two Galleria Tower, 13455 Noel Road, Suite 1925, Dallas,
Texas 75240.
 
<TABLE>
<CAPTION>
                                                                                            SHARES OF COMMON STOCK
                                                                                             BENEFICIALLY OWNED(1)
                                                                                          ---------------------------
                                                                                             NUMBER      PERCENTAGE
NAME                                                                                       OF SHARES      OWNERSHIP
- ----------------------------------------------------------------------------------------  ------------  -------------
<S>                                                                                       <C>           <C>
Jere W. Thompson, Jr.(2)................................................................    10,773,897         37.3%
Ignatius W. Leonards(3).................................................................     1,897,528          6.6%
Byron M. Allen(4).......................................................................       222,200        *
Timothy W. Rogers.......................................................................     2,883,628         10.0%
</TABLE>
 
                                       80
<PAGE>
<TABLE>
<CAPTION>
                                                                                            SHARES OF COMMON STOCK
                                                                                             BENEFICIALLY OWNED(1)
                                                                                          ---------------------------
                                                                                             NUMBER      PERCENTAGE
NAME                                                                                       OF SHARES      OWNERSHIP
- ----------------------------------------------------------------------------------------  ------------  -------------
<S>                                                                                       <C>           <C>
Scott L. Roberts........................................................................     2,883,628         10.0%
Timothy M. Terrell......................................................................     2,883,628         10.0%
Kevin W. McAleer........................................................................       --            --
Richard H. Roberson(5)..................................................................         3,400        *
Mark Langdale(6)........................................................................    11,224,352         38.8%
    5950 Berkshire, Suite 990
    Dallas, TX 75225
Christopher J. Amenson..................................................................         2,000        *
    c/o SBS Technologies, Inc.
    2400 Louisiana Blvd., N.E.
    AFC Building 5, Suite 600
    Albuquerque, NM 87110
Jere W. Thompson, Sr.(7)................................................................    10,657,169         36.9%
    Two Turtle Creek Village
    3838 Oak Lawn Ave., Suite 1850
    Dallas, TX 75219
Greenway Holdings, L.P.(2)..............................................................     2,014,081          7.0%
CapRock Investors(2)....................................................................     8,650,884         30.0%
All executive officers and directors as a group (ten persons)(8)........................    24,014,445         83.1%
</TABLE>
 
- ------------------------
 
* Less than 1% of the outstanding shares of the class.
 
(1) Based upon 28,910,222 shares of Holdings Common Stock issued and
    outstanding.
 
(2) Represents 8,650,884 shares held of record by CapRock Investors 108,932
    shares held of record of by CapRock Systems, Inc. and 2,014,081 shares held
    of record by Greenway Holdings, L.P. CapRock Investors is a Texas joint
    venture, of which Jere W. Thompson, Jr. is the managing venturer and in
    which he owns a controlling interest. The Joint Venture Agreement of CapRock
    Investors grants to Mr. Thompson, Jr. certain authorities, including
    deciding and casting all votes on behalf of CapRock Investors as a
    shareholder of Telecommunications. As a consequence, both CapRock Investors
    and Mr. Thompson may each be deemed to be the beneficial owner of all of the
    shares. CapRock Systems, Inc. is a Texas corporation of which Mr. Thompson,
    Jr. owns 50% of the outstanding common stock and is an officer and a
    director; as a result he has shared voting, investment, and dispositive
    power with respect to the 108,932 shares held by CapRock Systems, Inc.
    Greenway Holdings, L.P. is a Texas limited partnership of which Mr.
    Thompson, Jr. is the general partner and has sole voting, investment and
    dispositive power; as a result, he may be deemed to be the beneficial owner
    of all of the shares held of record by Greenway Holdings, L.P.
 
(3) Includes 6,666 shares held by Ignatius W. Leonards as custodian for minor
    children.
 
(4) Includes 7,300 shares held by Byron M. Allen as custodian for minor children
    and 7,300 shares held by Mr. Allen's daughters, the voting investment and
    dispositive power of which are shared by Mr. Allen with his daughters.
 
(5) Includes 100 shares held by spouse of Richard H. Roberson and 200 shares
    held by Richard H. Roberson as custodian for minor children, the voting,
    investment and disposition power of which are shared by Mr. Roberson with
    his spouse. Includes 3,000 shares subject to options exercisable within 60
    days of April 15, 1998. Does not include 27,000 shares subject to options
    not yet vested.
 
                                       81
<PAGE>
(6) Includes 8,650,884 shares held of record by CapRock Investors and 108,932
    shares held of record of CapRock Systems, Inc. Under the Joint Venture
    Agreement of CapRock Investors, the approval of a majority-in-interest of
    the venturers is required to approve the disposition of the shares. Because
    of the ownership interest of Jere W. Thompson, Jr., Mark Langdale, and Jere
    W. Thompson, Sr. (23.5%, 42.5% and 30.9%, respectively), two of the three
    acting together can authorize or prevent a disposition of the shares. As a
    result, each may be deemed to be the beneficial owner of all of the shares.
    CapRock Systems, Inc. is a Texas corporation of which Mr. Langdale owns 50%
    of the outstanding common stock and is an officer and a director; as a
    result he has shared voting, investment, and dispositive power with respect
    to the 108,932 shares held by CapRock Systems, Inc.
 
(7) Includes 1,302,282 shares held of record by The Williamsburg Corporation,
    8,650,884 shares held of record by CapRock Investors and 289,677 shares held
    of record by his spouse. Under the Joint Venture Agreement of CapRock
    Investors, the approval of a majority-in-interest of the venturers is
    required to approve the disposition of the shares. Because of the ownership
    interest of Jere W. Thompson, Jr., Mark Langdale, and Jere W. Thompson, Sr.,
    two of the three acting together can authorize or prevent a disposition of
    the shares. As a result, each may be deemed to be the beneficial owner of
    all of the shares. The Williamsburg Corporation is a Texas corporation, of
    which Mr. Thompson, Sr. is the president and a director; as a result he has
    shared voting, investment, and dispositive power with respect to the
    1,302,282 shares held by The Williamsburg Corporation.
 
(8) Includes 3,000 shares subject to options exercisable within 60 days of June
    15, 1998 granted to the executive officers of Holdings as a group.
 
                                       82
<PAGE>
          COMPARATIVE PER SHARE MARKET PRICE AND DIVIDEND INFORMATION
 
    IWL consummated the initial public offering of its common stock in June
1997, and the IWL Common Stock has been listed on the Nasdaq National Market
since June 1997 under the symbol "IWLC." There is currently no public market for
the Holdings Common Stock, the Telecommunications Common Stock or the
Partnership Interest.
 
    The table below sets forth, for the calendar quarters indicated, the
reported high and low sale prices of IWL Common Stock as reported on the Nasdaq
National Market based on published financial sources.
 
<TABLE>
<CAPTION>
                                                                                 IWL COMMON STOCK MARKET
                                                                                          PRICE
                                                                                 -----------------------
                                                                                    HIGH         LOW
                                                                                    -----     ----------
<S>                                                                              <C>          <C>
1997
 
Second Quarter beginning on June 12, 1997......................................   $       6   $       51/4
Third Quarter..................................................................   $       81/2 $       5
Fourth Quarter.................................................................   $      13   $       81/4
 
1998
 
First Quarter..................................................................   $      263/8 $       81/4
Second Quarter (through May 31, 1998)..........................................   $      22   $      131/2
</TABLE>
 
    During the calendar quarters indicated above, no dividends or distributions
were declared or made by IWL, Telecommunications, the Partnership or Holdings.
 
    On February 12, 1998, the last full trading day prior to the public
announcement of the proposed Mergers, the closing price of IWL Common Stock on
Nasdaq National Market was $9.875 per share. On June 19, 1998, the most recent
practicable date prior to the mailing of this Joint Proxy Statement/ Prospectus,
the closing price of IWL Common Stock on Nasdaq National Market was $15.00 per
share. Holders of IWL Common Stock, Telecommunications Common Stock or
Partnership Interests are urged to obtain current market quotations prior to
making any decision with respect to the Mergers and the Interest Exchange. See
"Summary--Comparative Per Share Information."
 
                                       83
<PAGE>
            SELECTED HISTORICAL FINANCIAL DATA OF TELECOMMUNICATIONS
 
    The following selected historical financial data for Telecommunications for
the years ended and as of December 31, 1993 and 1994 have been derived from the
unaudited financial statements of Telecommunications. The financial data for the
years ended and as of December 31, 1995 and 1996 have been derived from
Telecommunications' financial statements and related notes which have been
audited by Burds, Reed & Mercer, P.C., independent certified public accountants.
The financial data for the year ended and as of December 31, 1997 have been
derived from Telecommunications' financial statements and related notes which
have been audited by KPMG Peat Marwick LLP, independent certified public
accountants. The financial data for the three months ended March 31, 1997 and
1998 are derived from unaudited financial statements of Telecommunications,
which in the opinion of Telecommunication's management, contain all adjustments
(consisting only of normal recurring adjustments) necessary for a fair
presentation thereof. The results of operations for an interim period are not
necessarily indicative of the results of operations to be expected for a full
year. The data set forth below in this table are qualified in their entirety by,
and should be read in conjunction with, the financial statements of
Telecommunications and the related notes thereto and "Management's Discussion
and Analysis of Financial Condition and Results of Operations of
Telecommunications."
 
<TABLE>
<CAPTION>
                                                                                                     THREE MONTHS ENDED
                                                            YEAR ENDED DECEMBER 31,                      MARCH 31,
                                             -----------------------------------------------------  --------------------
                                               1993       1994       1995       1996       1997       1997       1998
                                             ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                                (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                          <C>        <C>        <C>        <C>        <C>        <C>        <C>
STATEMENTS OF OPERATIONS DATA:
Total revenues.............................  $     526  $   5,965  $  13,440  $  23,174  $  46,745  $   8,697  $  15,770
Cost of revenues...........................         39      4,780     11,043     18,941     35,776      7,118     11,802
                                             ---------  ---------  ---------  ---------  ---------  ---------  ---------
Gross profit...............................        487      1,185      2,397      4,233     10,969      1,579      3,968
Operating expenses:
  Selling, general and administrative......        426      1,038      2,601      3,711      7,049      1,487      2,176
  Depreciation and amortization............          4         10        333        478        694        142        231
                                             ---------  ---------  ---------  ---------  ---------  ---------  ---------
  Total operating expenses.................        430      1,048      2,934      4,189      7,743      1,629      2,407
                                             ---------  ---------  ---------  ---------  ---------  ---------  ---------
Operating income (loss)....................         57        137       (537)        44      3,226        (50)     1,561
Interest expense...........................     --             (9)      (240)      (315)      (311)       (78)       (86)
                                             ---------  ---------  ---------  ---------  ---------  ---------  ---------
Income (loss) before income taxes..........         57        128       (777)      (271)     2,915       (128)     1,475
Income taxes (benefit).....................          3         36       (245)       (88)     1,100        (65)       578
                                             ---------  ---------  ---------  ---------  ---------  ---------  ---------
Net income (loss)..........................  $      54         92  $    (532) $    (183) $   1,815  $     (63) $     897
                                             ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                             ---------  ---------  ---------  ---------  ---------  ---------  ---------
EARNINGS (LOSS) PER COMMON SHARE(1):
Basic......................................  $    0.01  $    0.01  $   (0.05) $   (0.02) $    0.17  $   (0.01) $    0.09
Diluted....................................  $    0.01  $    0.01  $   (0.05) $   (0.02) $    0.17  $   (0.01) $    0.08
</TABLE>
 
<TABLE>
<CAPTION>
                                                                           DECEMBER 31,                        MARCH 31,
                                                       -----------------------------------------------------  -----------
                                                         1993       1994       1995       1996       1997        1998
                                                       ---------  ---------  ---------  ---------  ---------  -----------
                                                                                 (IN THOUSANDS)
<S>                                                    <C>        <C>        <C>        <C>        <C>        <C>
BALANCE SHEET DATA:
Working capital (deficit)............................  $      37  $     104  $    (533) $  (1,348) $    (576)  $     (39)
Property and equipment, net..........................         34        118      2,214      2,858      3,693       4,162
Total assets.........................................        111      1,716      4,953      7,356     13,327      14,552
Long-term debt and capital lease obligations.........          3        113      1,114        720        453         431
Stockholders' equity (deficit).......................         (3)       375        593        411      2,247       3,165
</TABLE>
 
                                       84
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                             THREE MONTHS ENDED
                                                                   YEAR ENDED DECEMBER 31,                       MARCH 31,
                                                   -------------------------------------------------------  --------------------
                                                      1993        1994       1995       1996       1997       1997       1998
                                                      -----     ---------  ---------  ---------  ---------  ---------  ---------
                                                                                  (IN THOUSANDS)
<S>                                                <C>          <C>        <C>        <C>        <C>        <C>        <C>
OTHER DATA:
EBITDA(2)........................................   $      61   $     147  $    (204) $     522  $   3,920  $      92  $   1,792
Cash flows provided by (used in) operating
  activities.....................................          48        (312)       296        513      2,091        (73)       177
Cash flows used in investing activities..........         (31)       (366)      (696)    (1,118)    (1,500)      (148)      (612)
Cash flows provided by (used in) financing
  activities.....................................           4         997         77        580       (589)       221        433
Capital expenditures.............................          31         366        696      1,118      1,500        148        612
</TABLE>
 
- ------------------------
 
(1) Earnings (loss) per share amounts have been calculated in accordance with
    SFAS No. 128, "Earnings Per Share," in 1997. Prior year amounts have been
    restated on a comparable basis.
 
(2) EBITDA consists of earnings before interest, income taxes, depreciation and
    amortization. EBITDA is a measure commonly used in the communications
    industry to analyze companies on the basis of operating performance. EBITDA
    is not a measure of financial performance under generally accepted
    accounting principles and should not be considered as an alternative to net
    income as a measure of performance nor as an alternative to cash flow as a
    measure of liquidity. EBITDA may not be comparable with other similarly
    titled measures of other companies. See Telecommunications' financial
    statements and the notes thereto included elsewhere in this Joint Proxy
    Statement/Prospectus. EBITDA is calculated as set forth below.
 
<TABLE>
<CAPTION>
                                                                                                             THREE MONTHS ENDED
                                                                   YEAR ENDED DECEMBER 31,                       MARCH 31,
                                                   -------------------------------------------------------  --------------------
                                                      1993        1994       1995       1996       1997       1997       1998
                                                      -----     ---------  ---------  ---------  ---------  ---------  ---------
                                                                                  (IN THOUSANDS)
<S>                                                <C>          <C>        <C>        <C>        <C>        <C>        <C>
Net income (loss)................................   $      54   $      92  $    (532) $    (183) $   1,815  $     (63) $     897
 
Interest expense.................................      --               9        240        315        311         78         86
 
Income tax expense (benefit).....................           3          36       (245)       (88)     1,100        (65)       578
 
Depreciation and amortization....................           4          10        333        478        694        142        231
                                                          ---   ---------  ---------  ---------  ---------  ---------  ---------
 
EBITDA...........................................   $      61   $     147  $    (204) $     522  $   3,920  $      92  $   1,792
                                                          ---   ---------  ---------  ---------  ---------  ---------  ---------
                                                          ---   ---------  ---------  ---------  ---------  ---------  ---------
</TABLE>
 
                                       85
<PAGE>
             SELECTED HISTORICAL FINANCIAL DATA OF THE PARTNERSHIP
 
    The following selected historical financial data for the Partnership for the
years ended and as of December 31, 1993, 1994, 1995 and 1996 have been derived
from the Partnership's financial statements and related notes which have been
audited by Burds, Reed & Mercer, P.C., independent certified public accountants.
The financial data for the year ended and as of December 31, 1997 have been
derived from the Partnership's financial statements and related notes which have
been audited by KPMG Peat Marwick LLP, independent certified public accountants.
The financial data for the three months ended March 31, 1997 and 1998 are
derived from unaudited financial statements of the Partnership, which in the
opinion of the Partnership's management, contain all adjustments (consisting
only of normal recurring adjustments) necessary for a fair presentation thereof.
The results of operations for an interim period are not necessarily indicative
of the results of operations to be expected for a full year. The data set forth
below in this table are qualified in their entirety by, and should be read in
conjunction with, the financial statements of the Partnership and the related
notes thereto and "Management's Discussion and Analysis of Financial Condition
and Results of Operations of the Partnership."
 
<TABLE>
<CAPTION>
                                                                                                              THREE MONTHS ENDED
                                                                     YEAR ENDED DECEMBER 31,                      MARCH 31,
                                                      -----------------------------------------------------  --------------------
                                                        1993       1994       1995       1996       1997       1997       1998
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                                                    (IN THOUSANDS)
<S>                                                   <C>        <C>        <C>        <C>        <C>        <C>        <C>
STATEMENTS OF OPERATIONS DATA:
 
REVENUES:
 
  Telecommunications services.......................  $  --      $  --      $  --      $  --      $   1,945  $     360  $     588
  Projects and other................................        240        334        173     --         --         --         --
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Total revenues..................................        240        334        173     --          1,945        360        588
 
OPERATING EXPENSES:
 
  Network access expenses...........................     --            444        503     --             86         41         12
  Selling, general and administrative...............        245        457        326        174        286         65         67
  Depreciation and amortization.....................         18         50         31         54        902        166        185
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Total operating costs and expenses..............        263        951        860        228      1,274        272        264
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
Operating income (loss).............................        (23)      (617)      (687)      (228)       671         88        324
Interest expense....................................     --         --         --         --           (774)      (165)      (210)
Other income (expense)..............................         15          4         12     --             (1)    --         --
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
Income (loss) before income taxes and extraordinary
  item..............................................         (8)      (613)      (675)      (228)      (104)       (77)       114
Income taxes(1).....................................     --         --         --         --         --         --            (42)
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
Income (loss) before extraordinary item.............         (8)      (613)      (675)      (228)      (104)       (77)        72
Extraordinary item(2)...............................     --         --            645     --         --         --         --
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
Net income (loss)...................................  $      (8) $    (613) $     (30) $    (228) $    (104) $     (77) $      72
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                DECEMBER 31,                         MARCH 31,
                                                           -------------------------------------------------------  -----------
                                                             1993       1994        1995        1996       1997        1998
                                                           ---------  ---------     -----     ---------  ---------  -----------
                                                                                      (IN THOUSANDS)
<S>                                                        <C>        <C>        <C>          <C>        <C>        <C>
 
BALANCE SHEET DATA:
 
Working capital (deficit)................................  $     497  $    (178)  $       1   $  (2,616) $  (1,059)  $  (1,314)
Property and equipment, net..............................        239        206      --           8,552      9,300       9,168
Total assets.............................................        788        443          13       8,757      9,779       9,949
Long-term debt and capital lease obligations, net of
  current portion........................................     --         --          --           6,336      8,665       8,665
Partners' capital (deficit)..............................        742         34           4        (223)      (327)       (255)
</TABLE>
 
                                       86
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                                        THREE MONTHS ENDED
                                                               YEAR ENDED DECEMBER 31,                      MARCH 31,
                                                -----------------------------------------------------  --------------------
                                                  1993       1994       1995       1996       1997       1997       1998
                                                ---------  ---------  ---------  ---------  ---------  ---------  ---------
<S>                                             <C>        <C>        <C>        <C>        <C>        <C>        <C>
 
OTHER DATA:
 
EBITDA(3).....................................  $      10  $    (563) $       1  $    (174) $   1,572  $     254  $     509
Cash flows provided by (used in) operating
  activities..................................       (444)       229       (165)       (73)      (194)        (3)       992
Cash flows provided by (used in) investing
  activities..................................       (256)       (17)         8     (7,665)    (1,384)    (1,195)       (31)
Cash flows provided by (used in) financing
  activities..................................        750        (95)    --          7,639      1,751      2,048       (476)
Capital expenditures..........................        256         17          8      7,601      1,384      1,195         31
</TABLE>
 
- ------------------------
 
(1) Effective January 1, 1998, the Partnership elected to be taxed as a
    corporation and as such has recorded income taxes of $42,000 relating to the
    three months ended March 31, 1998. Prior to January 1, 1998, the Partnership
    allocated net income and net losses to its Partnership Interests and
    therefore no income taxes were recorded for periods ended prior to January
    1, 1998.
 
(2) Extraordinary gain of approximately $645,000 relates to extinguishment of
    certain lease obligations in 1995.
 
(3) EBITDA consists of earnings before interest, income taxes, depreciation and
    amortization. EBITDA is a measure commonly used in the communications
    industry to analyze companies on the basis of operating performance. EBITDA
    is not a measure of financial performance under generally accepted
    accounting principles and should not be considered as an alternative to net
    income as a measure of performance nor as an alternative to cash flow as a
    measure of liquidity. EBITDA may not be comparable with other similarly
    titled measures of other companies. See the Partnership's financial
    statements and the notes thereto included elsewhere herein in this Joint
    Proxy Statement/Prospectus. EBITDA is calculated as set forth below.
 
<TABLE>
<CAPTION>
                                                                                                          THREE MONTHS ENDED
                                                            YEAR ENDED DECEMBER 31,                           MARCH 31,
                                            -------------------------------------------------------  ----------------------------
                                               1993        1994       1995       1996       1997          1997           1998
                                               -----     ---------  ---------  ---------  ---------  ---------------  -----------
                                                                               (IN THOUSANDS)
<S>                                         <C>          <C>        <C>        <C>        <C>        <C>              <C>
Net income (loss).........................   $      (8)  $    (613) $     (30) $    (228) $    (104)    $     (77)     $      72
Interest expense..........................      --          --         --         --            774           165            210
Income taxes (benefit)....................      --          --         --         --         --            --                 42
Depreciation and amortization.............          18          50         31         54        902           166            185
                                                    --
                                                         ---------        ---  ---------  ---------         -----          -----
EBITDA....................................   $      10   $    (563) $       1  $    (174) $   1,572     $     254      $     509
                                                    --
                                                    --
                                                         ---------        ---  ---------  ---------         -----          -----
                                                         ---------        ---  ---------  ---------         -----          -----
</TABLE>
 
                                       87
<PAGE>
                   SELECTED HISTORICAL FINANCIAL DATA OF IWL
 
    The following selected consolidated historical financial data for each of
the four fiscal years ended June 30, 1997 and for the six months ended December
31, 1997, are derived from IWL's consolidated financial statements, which have
been audited by KPMG Peat Marwick LLP, independent certified public accountants,
whose report with respect to the three-year period ended June 30, 1997 appears
elsewhere herein. The following selected consolidated historical financial data
for the fiscal year ended June 30, 1993 are derived from IWL's unaudited
consolidated financial statements. The following selected consolidated
historical financial data for the six months ended December 31, 1996 and for the
three months ended March 31, 1997 and 1998 are derived from unaudited
consolidated financial statements of IWL which, in the opinion of IWL's
management, contain all adjustments (consisting only of normal recurring
adjustments) necessary for a fair presentation thereof. The results of
operations for the three months ended March 31, 1998 are not necessarily
indicative of the results of operations to be expected for the year ending
December 31, 1998. The data set forth below in this table are qualified in their
entirety by, and should be read in conjunction with, the financial statements of
IWL and the related notes thereto included elsewhere herein and "Management's
Discussion and Analysis of Financial Condition and Results of Operations of
IWL."
<TABLE>
<CAPTION>
                                                                                                        SIX MONTHS ENDED
                                                                YEAR ENDED JUNE 30,                       DECEMBER 31,
                                               -----------------------------------------------------  --------------------
                                                 1993       1994       1995       1996       1997       1996       1997
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                                  (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                            <C>        <C>        <C>        <C>        <C>        <C>        <C>
STATEMENTS OF OPERATIONS DATA:
Revenues:
  Telecommunication services.................  $   2,238  $   3,301  $   5,790  $   6,531  $   7,993  $   3,646  $   4,856
  Project and other..........................     10,722     11,559     10,004     10,711     14,708      7,303      7,107
  Product resales(1).........................     --         --         --         10,554      7,641      4,695     --
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Total revenues...........................     12,960     14,860     15,794     27,796     30,342     15,644     11,963
Cost of revenues.............................      8,641     10,071      9,639     20,416     21,737     11,684      6,557
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
Gross profit.................................      4,319      4,789      6,155      7,380      8,605      3,960      5,406
Operating expenses:
  Selling, general and administrative........      3,132      4,070      4,399      5,099      5,845      2,736      3,631
  Depreciation and amortization..............        359        571        821      1,003      1,403        635        982
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Total operating expenses.................      3,491      4,641      5,220      6,102      7,248      3,371      4,613
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
Operating income.............................        828        148        935      1,278      1,357        589        793
Interest expense, net........................        (10)      (215)      (244)      (270)      (514)      (214)      (218)
Other income (expense).......................        (86)       252        139         42        129         19        110
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
Income before income taxes...................        732        185        830      1,050        972        394        685
Income taxes.................................        249         41        294        316        283        134        264
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
Net income...................................  $     483  $     144  $     536  $     734  $     689  $     260  $     421
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                               ---------  ---------  ---------  ---------  ---------  ---------  ---------
Earnings per share amounts(2):
  Basic......................................  $    0.24  $    0.07  $    0.24  $    0.33  $    0.30  $    0.12  $    0.11
  Diluted....................................  $    0.24  $    0.07  $    0.24  $    0.33  $    0.30  $    0.11  $    0.11
Weighted average shares outstanding:
  Basic......................................      2,000      2,001      2,222      2,222      2,298      2,226      3,737
  Diluted....................................      2,011      2,011      2,233      2,233      2,323      2,261      3,908
 
<CAPTION>
 
                                                THREE MONTHS ENDED
                                                    MARCH 31,
                                               --------------------
                                                 1997       1998
                                               ---------  ---------
 
<S>                                            <C>        <C>
STATEMENTS OF OPERATIONS DATA:
Revenues:
  Telecommunication services.................  $   2,298  $   2,804
  Project and other..........................      3,161      5,251
  Product resales(1).........................      2,506     --
                                               ---------  ---------
    Total revenues...........................      7,965      8,055
Cost of revenues.............................      5,674      4,421
                                               ---------  ---------
Gross profit.................................      2,291      3,634
Operating expenses:
  Selling, general and administrative........      1,611      2,188
  Depreciation and amortization..............        347        647
                                               ---------  ---------
    Total operating expenses.................      1,958      2,835
                                               ---------  ---------
Operating income.............................        333        799
Interest expense, net........................       (125)      (155)
Other income (expense).......................        114          1
                                               ---------  ---------
Income before income taxes...................        322        645
Income taxes.................................         95        254
                                               ---------  ---------
Net income...................................  $     227  $     391
                                               ---------  ---------
                                               ---------  ---------
Earnings per share amounts(2):
  Basic......................................  $    0.10  $    0.10
  Diluted....................................  $    0.10  $    0.09
Weighted average shares outstanding:
  Basic......................................      2,234      3,912
  Diluted....................................      2,298      4,199
</TABLE>
 
                                       88
<PAGE>
<TABLE>
<CAPTION>
                                                                            JUNE 30,
                                                      -----------------------------------------------------  DECEMBER 31,
                                                        1993       1994       1995       1996       1997         1997
                                                      ---------  ---------  ---------  ---------  ---------  -------------
                                                                                 (IN THOUSANDS)
<S>                                                   <C>        <C>        <C>        <C>        <C>        <C>
BALANCE SHEET DATA:
Cash and cash equivalents...........................  $      72  $  --      $     291  $     361  $   7,660    $   3,345
Working capital (deficit)...........................        709       (367)      (265)     1,811      9,721        1,330
Total assets........................................      5,748      7,437      8,232     12,409     26,062       26,284
Long-term debt and capital lease obligations, net of
  current portion...................................        533      1,108      1,329      2,944      7,692        3,588
Stockholders' equity................................      1,511      2,419      2,955      3,698     11,394       12,166
 
<CAPTION>
 
                                                       MARCH 31,
                                                         1998
                                                      -----------
 
<S>                                                   <C>
BALANCE SHEET DATA:
Cash and cash equivalents...........................   $     720
Working capital (deficit)...........................        (398)
Total assets........................................      29,834
Long-term debt and capital lease obligations, net of
  current portion...................................       3,948
Stockholders' equity................................      14,135
</TABLE>
<TABLE>
<CAPTION>
                                                                                                           SIX MONTHS ENDED
                                                                   YEAR ENDED JUNE 30,                       DECEMBER 31,
                                                  -----------------------------------------------------  --------------------
                                                    1993       1994       1995       1996       1997       1996       1997
                                                  ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                                                (IN THOUSANDS)
<S>                                               <C>        <C>        <C>        <C>        <C>        <C>        <C>
OTHER DATA:
EBITDA(3).......................................  $   1,101  $     971  $   1,895  $   2,323  $   2,889  $   1,243  $   1,885
Cash flows provided by (used in) operating
  activities(4).................................                  (510)       696        341      2,545        334       (932)
Cash flows used in investing activities(4)......                  (983)    (1,231)      (631)    (6,919)    (2,453)    (4,701)
Cash flows provided by financing
  activities(4).................................                 1,422        825        360     11,673      2,040      1,318
Capital expenditures(4).........................                 1,439      1,585      1,492      6,988      2,432      9,811
 
<CAPTION>
 
                                                   THREE MONTHS ENDED
                                                       MARCH 31,
                                                  --------------------
                                                    1997       1998
                                                  ---------  ---------
 
<S>                                               <C>        <C>
OTHER DATA:
EBITDA(3).......................................  $     794  $   1,447
Cash flows provided by (used in) operating
  activities(4).................................        502        974
Cash flows used in investing activities(4)......       (798)    (4,308)
Cash flows provided by financing
  activities(4).................................        354        704
Capital expenditures(4).........................      1,049      3,772
</TABLE>
 
- ------------------------------
 
(1) Comprised of the resale of Alcatel products and other equipment and hardware
    to a Shell subsidiary.
 
(2) Earnings per share amounts have been calculated in accordance with SFAS No.
    128, "Earnings Per Share," in 1997 and 1998. Prior year amounts have been
    restated on a comparable basis.
 
(3) EBITDA consists of earnings before interest, income taxes, depreciation and
    amortization. EBITDA is a measure commonly used in the communications
    industry to analyze companies on the basis of operating performance. EBITDA
    is not a measure of financial performance under generally accepted
    accounting principles and should not be considered as an alternative to net
    income as a measure of performance nor as an alternative to cash flow as a
    measure of liquidity. EBITDA may not be comparable with other similarly
    titled measures of other companies. See IWL's consolidated financial
    statements and the notes thereto included elsewhere in this Joint Proxy
    Statement/Prospectus. EBITDA is calculated as set forth below.
<TABLE>
<CAPTION>
                                                                                                         SIX MONTHS ENDED
                                                               YEAR ENDED DECEMBER 31,                     DECEMBER 31,
                                                -----------------------------------------------------  --------------------
                                                  1993       1994       1995       1996       1997       1997       1998
                                                ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                                              (IN THOUSANDS)
<S>                                             <C>        <C>        <C>        <C>        <C>        <C>        <C>
Net income....................................  $     483  $     144  $     536  $     734  $     689  $     260  $     421
Interest expense, net.........................         10        215        244        270        514        214        218
Income taxes..................................        249         41        294        316        283        134        264
Depreciation and amortization.................        359        571        821      1,003      1,403        635        982
                                                ---------  ---------  ---------  ---------  ---------  ---------  ---------
EBITDA........................................  $   1,101  $     971  $   1,895  $   2,323  $   2,889  $   1,243  $   1,885
                                                ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                ---------  ---------  ---------  ---------  ---------  ---------  ---------
 
<CAPTION>
 
                                                 THREE MONTHS ENDED
 
                                                     MARCH 31,
                                                --------------------
                                                  1997       1998
                                                ---------  ---------
 
<S>                                             <C>        <C>
Net income....................................  $     227  $     391
Interest expense, net.........................        125        155
Income taxes..................................         95        254
Depreciation and amortization.................        347        647
                                                ---------  ---------
EBITDA........................................  $     794  $   1,447
                                                ---------  ---------
                                                ---------  ---------
</TABLE>
 
(4) Cash flow and capital expenditures information for the fiscal year 1993 is
    not available.
 
                                       89
<PAGE>
          UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL STATEMENTS
 
    The following unaudited pro forma combined condensed financial statements
give effect to the Transaction under the pooling of interests method of
accounting. The unaudited pro forma combined condensed financial statements are
based upon the respective historical financial statements of IWL,
Telecommunications, and the Partnership and should be read in conjunction with
such historical financial statements and the notes thereto, which are included
elsewhere in this Joint Proxy Statement/Prospectus. In May 1998, IWL changed its
fiscal year end to coincide with the fiscal years of Holdings,
Telecommunications and the Partnership. Accordingly, the pro forma statement of
operations for 1997 is presented for the 12 months ended December 31, 1997 on a
combined basis for all three entities. The unaudited combined condensed
statement of operations for the three months ended March 31, 1998 combine the
financial statements of IWL with those of Telecommunications and the
Partnership. The unaudited pro forma combined condensed statements of operations
for the years ended December 31, 1995 and 1996 combine IWL's consolidated
statements of operations for the years ended June 30, 1995 and 1996 with the
Telecommunications and Partnership statements of operations for the years ended
December 31, 1995 and 1996. The revenues and net income of IWL for the six month
period ended December 31, 1996 were excluded from the pro forma combined
condensed statement of operations for the year ended December 31, 1996 in the
amount of $15.6 million and $260,000, respectively.
 
    The pro forma information is presented for illustrative purposes only and is
not necessarily indicative of the operating results or financial position that
would have occurred if the Transaction had been consummated as presented in the
accompanying unaudited pro forma combined financial information, nor is it
necessarily indicative of future operating results or financial position.
 
                                       90
<PAGE>
                          CAPROCK COMMUNICATIONS CORP.
 
              PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
 
                   FOR THE THREE MONTHS ENDED MARCH 31, 1998
 
                                  (UNAUDITED)
 
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                              HISTORICAL                          PRO FORMA
                                             --------------------------------------------  ------------------------
                                                IWL     TELECOMMUNICATIONS   PARTNERSHIP   ADJUSTMENTS   COMBINED
                                             ---------  ------------------  -------------  -----------  -----------
<S>                                          <C>        <C>                 <C>            <C>          <C>
Revenues:
  Telecommunications services..............  $   2,804      $   15,770        $     588     $  --        $  19,162
  Projects and other.......................      5,251          --               --            --            5,251
                                             ---------         -------            -----    -----------  -----------
    Total revenues.........................      8,055          15,770              588        --           24,413
Cost of services...........................      4,421          11,802               12        --           16,235
                                             ---------         -------            -----    -----------  -----------
Gross profit...............................      3,634           3,968              576        --            8,178
Operating expenses
  Selling, general and administrative......      2,188           2,176               67        --            4,431
  Depreciation and amortization............        647             231              185        --            1,063
                                             ---------         -------            -----    -----------  -----------
  Total operating costs and expenses.......      2,835           2,407              252        --            5,494
                                             ---------         -------            -----    -----------  -----------
Operating income...........................        799           1,561              324        --            2,684
Interest expense, net......................       (155)            (68)            (210)       --             (433)
Other income (expense).....................          1             (18)          --            --              (17)
                                             ---------         -------            -----    -----------  -----------
Income before income taxes.................        645           1,475              114        --            2,234
Income taxes...............................        254             578               42        --              874
                                             ---------         -------            -----    -----------  -----------
Net income.................................  $     391      $      897        $      72     $  --        $   1,360
                                             ---------         -------            -----    -----------  -----------
                                             ---------         -------            -----    -----------  -----------
Earnings per common share:
  Basic....................................  $    0.10      $     0.09        $  --            --        $    0.05
  Diluted..................................  $    0.09      $     0.08        $  --            --        $    0.05
Weighted average common and common
  equivalent shares outstanding:
  Basic....................................      3,912          10,399           --            14,525(a)     28,836
  Diluted..................................      4,199          10,581           --            14,342(a)     29,122
</TABLE>
 
   See accompanying Notes to Unaudited Pro Forma Combined Condensed Financial
                                  Statements.
 
                                       91
<PAGE>
                          CAPROCK COMMUNICATIONS CORP.
 
              PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
 
                      FOR THE YEAR ENDED DECEMBER 31, 1997
 
                                  (UNAUDITED)
 
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                            HISTORICAL                         PRO FORMA
                                            ------------------------------------------  ------------------------
                                               IWL     TELECOMMUNICATIONS  PARTNERSHIP  ADJUSTMENTS   COMBINED
                                            ---------  ------------------  -----------  -----------  -----------
<S>                                         <C>        <C>                 <C>          <C>          <C>
Revenues:
  Telecommunication services..............  $   9,202      $   46,745       $   1,945    $  --        $  57,892
  Projects and other......................     14,512                          --           --           14,512
  Product resales.........................      2,946          --              --           --            2,946
                                            ---------         -------      -----------  -----------  -----------
    Total revenues........................     26,660          46,745           1,945       --           75,350
Cost of services..........................     14,261          35,776              86       --           50,123
Cost of product resales...................      2,347          --              --           --            2,347
                                            ---------         -------      -----------  -----------  -----------
Gross profit..............................     10,052          10,969           1,859       --           22,880
Operating expenses:
  Selling, general, and
    administrative........................      6,742           7,049             286       --           14,077
  Depreciation and amortization...........      1,749             694             902       --            3,345
                                            ---------         -------      -----------  -----------  -----------
    Total operating cost and expenses.....      8,491           7,743           1,188       --           17,422
                                            ---------         -------      -----------  -----------  -----------
Operating income..........................      1,561           3,226             671       --            5,458
Interest income (expense), net............       (518)           (311)           (774)      --           (1,603)
Other income (expense)....................        221          --                  (1)      --              220
                                            ---------         -------      -----------  -----------  -----------
Income before income taxes................      1,264           2,915            (104)      --            4,075
Income taxes (benefit)....................        413           1,100          --              (38)(b)      1,475
                                            ---------         -------      -----------  -----------  -----------
Net income (loss).........................  $     851      $    1,815       $    (104)   $      38    $   2,600
                                            ---------         -------      -----------  -----------  -----------
                                            ---------         -------      -----------  -----------  -----------
Earnings per common share:
  Basic...................................  $    0.28      $     0.17       $  --        $  --        $    0.09
  Diluted.................................  $    0.26      $     0.17       $  --        $  --        $    0.09
Weighted average common and common
  equivalent shares outstanding:
  Basic...................................      3,060          10,399          --           14,525(a)     27,984
  Diluted.................................      3,231          10,581          --           14,527(a)     28,339
</TABLE>
 
   See accompanying Notes to Unaudited Pro Forma Combined Condensed Financial
                                  Statements.
 
                                       92
<PAGE>
                          CAPROCK COMMUNICATIONS CORP.
 
              PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
 
                                  (UNAUDITED)
 
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                            HISTORICAL
                                           --------------------------------------------
                                                        FOR THE YEAR ENDED
                                           --------------------------------------------
                                           JUNE 30,      DECEMBER 31,     DECEMBER 31,
                                             1996            1996             1996              PRO FORMA
                                           ---------  ------------------  -------------  ------------------------
                                              IWL     TELECOMMUNICATIONS   PARTNERSHIP   ADJUSTMENTS   COMBINED
                                           ---------  ------------------  -------------  -----------  -----------
<S>                                        <C>        <C>                 <C>            <C>          <C>
Revenues:
  Telecommunication services.............  $   6,531      $   23,174        $  --         $  --        $  29,705
  Project and other......................     10,711                           --            --           10,711
  Product resales........................     10,554          --               --            --           10,554
                                           ---------         -------            -----    -----------  -----------
    Total revenues.......................     27,796          23,174           --            --           50,970
  Cost of services.......................     10,744          18,941           --            --           29,685
  Cost of product resales................      9,672          --               --            --            9,672
                                           ---------         -------            -----    -----------  -----------
  Gross profit...........................      7,380           4,233           --            --           11,613
Operating costs and expenses:
  Selling, general, and administrative...      5,099           3,711              174        --            8,984
  Depreciation and amortization..........      1,003             478               54        --            1,535
                                           ---------         -------            -----    -----------  -----------
    Total operating expenses.............      6,102           4,189              228        --           10,519
                                           ---------         -------            -----    -----------  -----------
Operating income.........................      1,278              44             (228)       --            1,094
Interest expense, net....................       (270)           (315)          --            --             (585)
Other income.............................         41          --               --            --               41
                                           ---------         -------            -----    -----------  -----------
Income before income taxes...............      1,049            (271)            (228)       --              550
Income taxes (benefit)...................        315             (88)          --               (84)(b)        143
                                           ---------         -------            -----    -----------  -----------
Net income (loss)........................  $     734      $     (183)       $    (228)    $      84    $     407
                                           ---------         -------            -----    -----------  -----------
                                           ---------         -------            -----    -----------  -----------
Earnings (loss) per common share:
  Basic..................................  $    0.33      $    (0.02)       $  --         $  --        $    0.01
  Diluted................................  $    0.33      $    (0.02)       $  --         $  --        $    0.01
Weighted average shares outstanding:
  Basic..................................      2,222          10,399           --            14,525(a)     27,146
  Diluted................................      2,233          10,399           --            14,525(a)     27,157
</TABLE>
 
   See accompanying Notes to Unaudited Pro Forma Combined Condensed Financial
                                  Statements.
 
                                       93
<PAGE>
                          CAPROCK COMMUNICATIONS CORP.
 
              PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
 
                                  (UNAUDITED)
 
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                            HISTORICAL
                                           --------------------------------------------
                                                        FOR THE YEAR ENDED
                                           --------------------------------------------
                                           JUNE 30,      DECEMBER 31,     DECEMBER 31,
                                             1995            1995             1995              PRO FORMA
                                           ---------  ------------------  -------------  ------------------------
                                              IWL     TELECOMMUNICATIONS   PARTNERSHIP   ADJUSTMENTS   COMBINED
                                           ---------  ------------------  -------------  -----------  -----------
<S>                                        <C>        <C>                 <C>            <C>          <C>
Revenues:
  Telecommunication services.............  $   5,790      $   12,231        $  --         $  --        $  18,021
  Projects and other.....................     10,004           1,209              173        --           11,386
                                           ---------         -------            -----    -----------  -----------
    Total revenues.......................     15,794          13,440              173        --           29,407
  Cost of services.......................      9,639          11,043              503        --           21,185
                                           ---------         -------            -----    -----------  -----------
  Gross profit...........................      6,155           2,397             (330)       --            8,222
Operating expenses:
  Selling, general, and administrative...      4,399           2,601              326        --            7,326
  Depreciation and amortization..........        821             333               31        --            1,185
                                           ---------         -------            -----    -----------  -----------
  Total operating expenses...............      5,220           2,934              357        --            8,511
                                           ---------         -------            -----    -----------  -----------
Operating income.........................        935            (537)            (687)       --             (289)
Interest expense, net....................       (244)           (240)          --            --             (484)
Other....................................        138          --                   12        --              150
                                           ---------         -------            -----    -----------  -----------
Income before income taxes and
  extraordinary item.....................        829            (777)            (675)       --               22
Income taxes (benefit)...................        293            (245)          --               (11)(b)         37
                                           ---------         -------            -----    -----------  -----------
Income (loss) before extraordinary item          536            (532)            (675)           11         (660)
Extraordinary item                            --              --                  645        --              645
                                           ---------         -------            -----    -----------  -----------
Net income (loss)........................  $     536      $     (532)       $     (30)    $      11    $     (15)
                                           ---------         -------            -----    -----------  -----------
                                           ---------         -------            -----    -----------  -----------
Earnings (loss) per common share:
  Basic..................................  $    0.24      $    (0.05)       $  --            --        $  --
  Diluted................................  $    0.24      $    (0.05)       $  --            --        $  --
Weighted average shares outstanding:
  Basic..................................      2,222           9,717           --            13,987(a)     25,926
  Diluted................................      2,233           9,717           --            13,987(a)     25,937
</TABLE>
 
   See accompanying Notes to Unaudited Pro Forma Combined Condensed Financial
                                  Statements.
 
                                       94
<PAGE>
                          CAPROCK COMMUNICATIONS CORP.
 
                   PRO FORMA COMBINED CONDENSED BALANCE SHEET
 
                              AS OF MARCH 31, 1998
 
                                  (UNAUDITED)
 
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                            HISTORICAL                         PRO FORMA
                                            ------------------------------------------  ------------------------
                                               IWL     TELECOMMUNICATIONS  PARTNERSHIP  ADJUSTMENTS   COMBINED
                                            ---------  ------------------  -----------  -----------  -----------
 
<S>                                         <C>        <C>                 <C>          <C>          <C>
ASSETS
 
Current assets:
  Cash and cash equivalents...............  $     720      $   --           $     658    $  --        $   1,378
  Accounts receivable, net................      8,056           9,319              44       --           17,419
  Inventories.............................        998          --              --           --              998
  Prepaid expenses and other..............        924             447               4       --            1,375
  Deferred income taxes...................        242             624          --           --              866
                                            ---------         -------      -----------  -----------  -----------
    Total current assets..................     10,940          10,390             706       --           22,036
Property, plant and equipment, net........     16,670           4,162           9,168       --           30,000
Other assets..............................      2,224          --                  75       --            2,299
                                            ---------         -------      -----------  -----------  -----------
    Total assets..........................  $  29,834      $   14,552       $   9,949    $  --        $  54,335
                                            ---------         -------      -----------  -----------  -----------
                                            ---------         -------      -----------  -----------  -----------
 
LIABILITIES AND STOCKHOLDERS' EQUITY
 
Current liabilities:
  Current portion of long-term debt.......  $   6,354      $    1,642       $     891    $  --        $   8,887
  Accounts payable and accrued expenses...      3,975           7,710             388        3,000(c)     15,073
  Accrued commitment and guarantor fees...     --              --                 418       --              418
  Customer deposits.......................        360              35          --           --              395
  Current installments under capital
    lease.................................     --                 247          --           --              247
  Income taxes payable....................        490             642          --           --            1,132
  Unearned revenue........................        159             153             323       --              635
                                            ---------         -------      -----------  -----------  -----------
    Total current liabilities.............     11,338          10,429           2,020        3,000       26,787
Long-term debt............................      3,948             128           8,814       --           12,260
Deferred income taxes.....................        413             527          --           --              940
Obligations under capital lease...........     --                 303          --           --              303
                                            ---------         -------      -----------  -----------  -----------
    Total liabilities.....................     15,699          11,387          10,204        3,000       40,290
Stockholders' equity
  Common Stock............................         40           1,458          --           (1,353)(a)        145
  Additional paid-in capital..............      9,173          --                (255)       1,353(a)     10,271
  Retained earnings.......................      4,922           2,082          --           (3,000)(c)      4,004
  Unearned compensation...................     --                (375)         --           --             (375)
                                            ---------         -------      -----------  -----------  -----------
    Total stockholders' equity............     14,135           3,165            (255)      (3,000)      14,045
                                            ---------         -------      -----------  -----------  -----------
    Total liabilities and stockholders'
      equity..............................  $  29,834      $   14,552       $   9,949    $  --        $  54,335
                                            ---------         -------      -----------  -----------  -----------
                                            ---------         -------      -----------  -----------  -----------
</TABLE>
 
   See accompanying Notes to Unaudited Pro Forma Combined Condensed Financial
                                  Statements.
 
                                       95
<PAGE>
                          NOTES TO UNAUDITED PRO FORMA
 
                    COMBINED CONDENSED FINANCIAL STATEMENTS
 
(a) The Merger Agreement was entered into on February 16, 1998, as amended, with
    Telecommunications, the Partnership and Holdings and other subsidiaries
    created to facilitate the Transaction. Under terms of the Merger Agreement,
    each share of IWL Common Stock will be exchanged for one share of Holdings
    Common Stock, each share of Telecommunications Common Stock will be
    exchanged for 1.789030878 shares of Holdings Common Stock and each one
    percent (1%) of the general and limited partnership interests in the
    Partnership will be exchanged for 63,194.54 shares of Holdings Common Stock.
    The following table details the pro forma issuances in connection with the
    Transaction as if the Transaction had occurred on March 31, 1998:
 
<TABLE>
<CAPTION>
                                                     COMMON
                                                     SHARES                       NUMBER OF
                                                  OUTSTANDING   EXCHANGE RATIO  HOLDING SHARES
                                                  ------------  --------------  --------------
<S>                                               <C>           <C>             <C>
Holdings Common Shares to be issued to the
  shareholders of Telecommunications............    10,398,954     1.789030878     18,604,050
 
Holdings Common Shares to be issued to the
  partners of the Partnership...................                                    6,319,454
 
Holdings Common Shares to be issued to the
  shareholders of IWL...........................     3,968,607             1.0      3,968,607
                                                                                --------------
 
Total Holdings Common Shares outstanding after
  completion of the Merger......................                                   28,892,111
                                                                                --------------
                                                                                --------------
</TABLE>
 
        The actual number of Holdings Common Shares to be issued will be
        determined at the effective time of the Transaction based on the number
        of shares of IWL and Telecommunications Common Stock outstanding. The
        adjustments to the balance sheet as of March 31, 1998 result in the
        recapitalization of Holdings.
 
(b) The net adjustments to tax expense for the Partnership for the years ended
    December 31, 1995, 1996 and 1997 included in the pro forma adjustments were
    estimated at 37%. These adjustments were made to reflect the tax expense and
    the deferred tax assets and liabilities that would have been recorded if the
    Partnership had been taxed as a C Corporation in those years.
 
(c) Since the Transaction has not been completed, costs of the Transaction can
    only be estimated at this time. IWL, Telecommunications and the Partnership
    estimate they will incur certain direct transaction costs of approximately
    $3.0 million associated with the Transaction consisting of transaction fees
    for investment bankers, attorneys, accountants, financial printing and other
    related charges. The pro forma combined condensed balance sheet as of March
    31, 1998 includes the effect of these costs as if the Transaction occurred
    on March 31, 1998 and the pro forma combined condensed statement of
    operations for all prior periods presented exclude the effects of these
    costs. Such costs will be expenses in the period in which the Transaction is
    consummated.
 
                                       96
<PAGE>
          MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
                AND RESULTS OF OPERATIONS OF TELECOMMUNICATIONS
 
    THE FOLLOWING DISCUSSION AND ANALYSIS SHOULD BE READ IN CONJUNCTION WITH THE
SELECTED HISTORICAL FINANCIAL DATA, FINANCIAL STATEMENTS AND NOTES THERETO AND
THE OTHER HISTORICAL FINANCIAL INFORMATION OF TELECOMMUNICATIONS CONTAINED
ELSEWHERE IN THIS JOINT PROXY STATEMENT/PROSPECTUS.
 
OVERVIEW
 
    Telecommunications is a facilities-based provider of voice, data and
broadband communications services to interexchange carriers, other
communications entities and to businesses and consumers ("Telecommunications
Services"). Revenue from Telecommunications Services is recognized primarily on
a minutes-of-use basis. Telecommunications experiences slight seasonal
reductions of revenues around the Thanksgiving and Christmas holidays.
 
    TELECOMMUNICATIONS SERVICES.  Telecommunications Services includes switched
services over owned and leased network facilities to interexchange carriers and
other telecommunications providers, as well as voice and data services to
businesses and consumers. Telecommunications plans to expand its presence in the
market by developing its brand identity and aggressively marketing its existing
and planned voice, data and other products and services. Telecommunications also
plans to further build direct, end-user relationships by significantly
increasing the size of its direct and agent sales forces, providing competitive
pricing and superior network quality and offering enhanced, market-driven
services to businesses and consumers. Telecommunications' ability to grow its
revenues will be dependent upon a number of factors, many of which are not
within its control and as a result no assurance can be given that such
objectives will be met. For the year ended December 31, 1997,
Telecommunications' five largest carrier customers accounted for approximately
41% of Telecommunications Services revenue, and MCI accounted for more than 10%
of Telecommunications' revenues.
 
RESULTS OF OPERATIONS
 
    THREE MONTHS ENDED MARCH 31, 1998 COMPARED TO THREE MONTHS ENDED MARCH 31,
     1997
 
    REVENUE.  Total revenue was $15.8 million for the three months ended March
31, 1998, as compared to $8.7 million for the same period in 1997. The 82%
increase was due to increases in both domestic and international switched
services and to growth in switched services provided to small and medium-sized
businesses as a result of continued expansion of Telecommunications' direct and
agent sales channels. For the three months ended March 31, 1998, revenues from
international operations was $4.4 million, or 28% of total revenues, as compared
to $2.3 million for the three months ended March 31, 1997, or 26% of total
revenues.
 
    OPERATING COSTS AND EXPENSES.  Telecommunications' principal operating costs
and expenses consist of cost of revenues, SG&A, and depreciation.
 
    Total operating costs and expenses increased to approximately $14.2 million
as compared to $8.7 million for the same period in 1997. Cost of revenues
increased to $11.8 million for the three months ended March 31, 1998, as
compared to $7.1 million for the same period in 1997. The growth in cost of
revenues was primarily attributable to the continued growth in switched services
and network operations. The increase in gross margin from 18% to 25% resulted
from, among other things, favorable pricing attributable to the higher traffic
and new vendors, as well as a more favorable mix of international and domestic
traffic. Gross margins may vary in the future periods as a result of these
factors.
 
    SG&A includes the cost of salaries, benefits, occupancy costs, commissions,
sales and marketing expenses and administrative expenses. SG&A increased to $2.2
million for the three months ended March 31, 1998 as compared to $1.5 million
for the same period in 1997. The increase resulted from the expanded
administrative and information activities needed to support Telecommunications'
growth,
 
                                       97
<PAGE>
recruitment of additional personnel and additional sales commission payments.
SG&A expenses, in terms of absolute costs, will increase in subsequent periods
as Telecommunications continues to expand its telecommunications services,
expand its agent and direct sales operations, open additional commercial sales
offices in selected Texas markets, and recruit experienced telecommunications
industry personnel to implement Telecommunications' strategy.
 
    Telecommunications' depreciation and amortization expense increased to
$231,000 for the three months ended March 31, 1998 as compared to $142,000 for
the same period in 1997. The increase resulted primarily from purchases of
additional equipment and other fixed assets to accommodate Telecommunications'
growth. Telecommunications expects that depreciation and amortization expense
will continue to increase in subsequent periods as Telecommunications continues
to expand its facilities.
 
    INTEREST EXPENSE.  For the three months ended March 31, 1998,
Telecommunications' interest expense increased to $86,000 as compared to $78,000
for the same period in 1997.
 
    INCOME TAXES.  Telecommunications' income tax expense was $578,000 for the
three months ended March 31, 1998, as compared to an income tax benefit of
$65,000 for the same period in 1997.
 
    NET INCOME (LOSS).  Telecommunications reported net income of $897,000 for
the three months ended March 31, 1998, compared to a net loss of $63,000 for the
three months ended March 31, 1997 as a result of the factors discussed above.
 
    YEAR ENDED DECEMBER 31, 1997 COMPARED TO YEAR ENDED DECEMBER 31, 1996
 
    REVENUE.  Total revenues increased to approximately $46.7 million during the
year ended December 31, 1997, as compared to approximately $23.2 million in
1996. The 101% increase was due to increases in revenues from both domestic and
international switched services and to growth in switched services provided to
small and medium-sized businesses and to consumers as a result of continued
expansion of Telecommunications' direct and agent sales channels. In 1997,
revenues from international operations were $14.0 million, or 30% of total
revenues, as compared to $4.2 million in 1996, or 18% of total revenues.
 
    OPERATING COSTS AND EXPENSES.  Telecommunications' principal operating costs
and expenses consist of cost of revenues, SG&A, and depreciation.
 
    Total operating costs and expenses increased to approximately $43.5 million
during the year ended December 31, 1997 as compared to approximately $23.1
million during the corresponding period in 1996. Cost of revenues increased to
approximately $35.8 million for the year ended December 31, 1997, as compared to
approximately $18.9 million for 1996. The growth in cost of revenues was
primarily attributable to the continued growth in switched services and network
operations. The increase in gross margin from 18% to 23% resulted from, among
other things, favorable pricing attributable to the higher traffic and the
efficient utilization of Telecommunications' switching network.
 
    SG&A includes the cost of salaries, benefits, occupancy costs, commissions,
sales and marketing expenses and administrative expenses. SG&A increased to $7.0
million for the year ended December 31, 1997, as compared to approximately $3.7
million in 1996. The increase resulted from the expanded administrative and
information activities needed to support Telecommunications' growth, recruitment
of additional personnel and additional sales commission payments.
 
    Telecommunications' depreciation and amortization expense increased to
approximately $694,000 during the year ended December 31, 1997 as compared to
approximately $478,000 in 1996. This increase resulted primarily from purchases
of additional equipment and other fixed assets to accommodate
Telecommunications' growth. Telecommunications expects that depreciation and
amortization expense will continue to increase in subsequent periods as
Telecommunications continues to expand its facilities.
 
                                       98
<PAGE>
    INTEREST EXPENSE.  During 1997, Telecommunications' interest expense
decreased slightly to approximately $311,000 as compared to approximately
$315,000 in 1996.
 
    INCOME TAXES.  Telecommunications' income tax expense was approximately $1.1
million during the year ended December 31, 1997 as compared to an income tax
benefit of approximately $88,000 in 1996. This increase was attributable to the
improved profitability of Telecommunications in 1997.
 
    NET EARNINGS (LOSS).  Telecommunications realized net earnings of
approximately $1.8 million in the year ended December 31, 1997, as compared to a
net loss of approximately $183,000 in the corresponding period of 1996 as a
result of the factors discussed above.
 
    YEAR ENDED DECEMBER 31, 1996 COMPARED TO YEAR ENDED DECEMBER 31, 1995
 
    REVENUE.  Total revenues increased to approximately $23.2 million during the
year ended December 31, 1996 from approximately $13.4 million in 1995 due to
significantly higher revenues from Telecommunications Services. This 73%
increase was largely attributable to growth in domestic switched services
provided to carriers.
 
    OPERATING COSTS AND EXPENSES.  Total operating costs and expenses increased
to approximately $23.1 million from approximately $14.0 million in 1996, due
primarily to increases in cost of revenues and SG&A. Expenses for cost of
revenues increased to approximately $18.9 million for the year ended December
31, 1996 as compared to approximately $11.0 million for 1995. The growth in cost
of revenues was primarily attributable to the continued growth in switched
services and network operations.
 
    SG&A includes the cost of salaries, benefits, occupancy costs, commissions,
sales and marketing expenses and administrative expenses. SG&A increased to $3.7
million for the year ended December 31, 1996 as compared to $2.6 million in
1995. The increase resulted from the expanded administrative and information
activities needed to support Telecommunications' growth, recruitment of
additional personnel and additional sales commission payments.
 
    Telecommunications' depreciation and amortization expense increased to
approximately $478,000 from approximately $333,000 in 1995. This increase was
primarily due to Telecommunications' purchases of additional equipment and other
fixed assets to accommodate Telecommunications' growth.
 
    INTEREST EXPENSE.  During 1996, Telecommunications' net interest expense
increased to approximately $315,000 from approximately $240,000 in 1995. This
increase is primarily attributable to increases in revolving line borrowings to
support Telecommunications' working capital requirements.
 
    INCOME TAXES.  Telecommunications' income tax benefit was approximately
$88,000 during the year ended December 31, 1996 as compared to a benefit of
approximately $245,000 in 1995.
 
    NET LOSS.  Telecommunications experienced a net loss of approximately
$183,000 in 1996 compared to a net loss of approximately $532,000 in 1995 as a
result of the factors discussed above.
 
NEW ACCOUNTING PRONOUNCEMENTS
 
    In February 1997, the Financial Accounting Standards Board ("FASB") issued
Statement No. 128, "Earnings Per Share" ("SFAS 128") effective for financial
statements issued for periods ending after December 15, 1997. SFAS 128
establishes standards for computing and presenting earnings per share and
supersedes APB No. 15, "Earnings Per Share." Telecommunications adopted SFAS 128
and all prior periods have been restated to conform with the requirements of
this statement.
 
    In June 1997, the FASB issued SFAS No. 130, "Reporting Comprehensive Income"
("SFAS 130") which establishes standards for reporting and display of
comprehensive income and its components. The required disclosures for SFAS 130
will be adopted in 1998. The adoption of SFAS 130 will have no impact
 
                                       99
<PAGE>
on Telecommunications' results of operations, financial position or cash flows
and any effect will be limited to the presentation of its disclosures.
 
    In June 1997, the FASB issued Statement of Financial Accounting Standards
No. 131, "Disclosure About Segments of an Enterprise and Related Information"
("SFAS 131"). SFAS 131 establishes standards for the manner in which business
enterprises are to report information about operating segments in its annual
statements and requires those enterprises to report selected information
regarding operating segments in interim financial reports issued to
shareholders. It also establishes standards for related disclosures about
products and services, geographic areas and major customers. SFAS 131 is
effective for fiscal years beginning after December 15, 1997. Financial
statements disclosures for prior periods are required to be restated.
Telecommunications is in the process of evaluating the disclosure requirements.
The adoption of SFAS 131 will not have an impact on Telecommunications' results
of operations, financial position or cash flows and any effect will be limited
to the presentation of its disclosures.
 
LIQUIDITY AND CAPITAL RESOURCES
 
    From January 1, 1995 through December 31, 1997, Telecommunications funded
capital expenditures, debt service and cash used in operations through a
combination of stockholder loans, the sale of common stock, a revolving credit
facility with a bank and a note payable to a bank guaranteed by certain
shareholders of Telecommunications. Total cash expended during the three years
ended December 31, 1997 to fund capital expenditures and repayments of long-term
debt to third parties, was $3.3 million and $1.1 million, respectively. Total
cash generated from operations was $2.9 million during the same period. Total
cash provided during this same period from revolving loans was $1.2 million. As
of December 31, 1997, Telecommunications had a working capital deficit of
$576,000. At December 31, 1996, Telecommunications had a working capital deficit
of approximately $1.3 million. As of March 31, 1998, Telecommunications had a
working capital deficit of $39,000. Telecommunications has a $2.5 million
secured revolving line of credit with Bank One, Texas, N.A. The amount to be
drawn has certain borrowing base limitations, primarily relating to the accounts
receivable balance. Interest is at prime plus 2%. The loan agreement contains
affirmative and negative prohibitions on the payment of dividends.
Telecommunications has previously been in technical default of a covenant
requiring lender consent to the Transaction. The bank has waived such default,
consented to the Transaction and has renewed the line of credit through the
earlier of consummation of the Transaction or August 31, 1998, The balance
outstanding at December 31, 1997 was approximately $1.2 million. Throughout
1997, Telecommunications also had a $1.5 million secured line of credit. In June
1998 Telecommunications increased its bank line of credit to $7 million, subject
to a borrowing base based on accounts receivable. Telecommunications can advance
a maximum of $2.5 million to the Partnership. The line of credit will mature on
the earlier of consummation of the Transaction or August 31, 1998.
 
    Telecommunications anticipates that, based on current plans and assumptions
relating to its operations, its financial resources and equipment financing
arrangements will be sufficient to fund Telecommunications' growth and
operations for approximately 12 months from the date of this Joint Proxy
Statement/ Prospectus. Telecommunications believes that its capital needs at the
end of such period will continue to be significant and, therefore,
Telecommunications may continue to seek additional sources of capital. Further,
in the event Telecommunications' plans or assumptions change or prove to be
inaccurate, or if Telecommunications consummates any unplanned acquisitions of
businesses or assets, Telecommunications may be required to seek additional
sources of capital sooner than currently anticipated. Sources of additional
capital may include public and private equity and debt financings, sales of
non-strategic assets and other financing arrangements. See "Offering of Proposed
Notes."
 
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CONTINGENCIES
 
    Telecommunications is party to ordinary litigation incidental to its
business, none of which is expected to have a material adverse effect on the
results of operations, financial position or liquidity of Telecommunications.
 
YEAR 2000
 
    As the year 2000 approaches, Telecommunications recognizes the need to
ensure its operations will not be adversely impacted by Year 2000 computer
software failures. Telecommunications is addressing this issue to ensure the
availability and integrity of its financial systems and the reliability of its
operational systems. Telecommunications has established processes for evaluating
and managing the risks and costs associated with this problem.
Telecommunications has and will continue to make certain investments in its
software systems and applications to ensure Telecommunications is Year 2000
compliant. The financial impact to Telecommunications has not yet been fully
determined, however such impact is not anticipated to have a material adverse
effect on the financial condition, results of operations or cash flow of
Telecommunications.
 
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          MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
                  AND RESULTS OF OPERATIONS OF THE PARTNERSHIP
 
    THE FOLLOWING DISCUSSION AND ANALYSIS SHOULD BE READ IN CONJUNCTION WITH THE
SELECTED HISTORICAL FINANCIAL DATA, FINANCIAL STATEMENTS AND NOTES THERETO AND
THE OTHER HISTORICAL FINANCIAL INFORMATION OF THE PARTNERSHIP CONTAINED
ELSEWHERE IN THIS JOINT PROXY STATEMENT/PROSPECTUS.
 
OVERVIEW
 
    The Partnership is a facilities-based provider of broadband
Telecommunications Services to interexchange carriers, other communications
entities and businesses. The Partnership had no revenues in 1996. In 1997 it had
revenues and a net loss of $1.9 million and $104,000, respectively.
 
    The Partnership began operations in 1992 to design, manage the construction
of, operate, maintain and market a 185 route mile fiber optic network in South
Texas. In 1996, the Partnership entered into a ten year contract for the lease
of dark fiber over a 260 route mile fiber network between Houston and Corpus
Christi, Texas. The Partnership completed construction of the network in January
1997. In January 1998, the Partnership entered into a contract for the sale of
dark fiber between San Antonio and Laredo, Texas. The Partnership expects to
complete the construction of approximately 500 additional route miles of fiber
network from San Antonio to Laredo, McAllen, Harlingen, Brownsville and Corpus
Christi, Texas by the end of 1998. The Partnership intends to expand its
regional fiber network to approximately 4,300 route miles throughout Texas and
the Gulf Coast region by the end of 2000. The Partnership's ability to expand
its network and grow its revenues will be dependent upon a number of factors,
including the availability of financing, and as a result no assurance can be
given that its expansion plans will be met.
 
    The Partnership provides dedicated line services over the Partnership's
owned fiber network to interexchange carriers and other telecommunications
providers for terms of one year or longer. High volume capacity service
agreements and dedicated line service agreements generally provide for "take or
pay" monthly payments at fixed rates based on the capacity term and length of
circuit used. Customer are typically billed on a monthly basis and also may
incur an installation charge or certain ancillary charges for equipment. After
contract expiration, the contracts may be renewed or the services may be
provided on a month-to-month basis. The Partnership is expanding its network to
increase its revenue stream and reduce per unit costs, targeting capacity sales
on a segment-by-segment basis as the Partnership's network is deployed and
activated, and is increasingly seeking longer-term, high-volume capacity
agreements from major carriers. In addition to traditional telecommunications
carriers, the Partnership is marketing to ISPs and other data service companies.
 
    As of December 31, 1997, substantially all of the Partnership's revenues
were derived from two customers. One of the customers provided for approximately
93% of total revenues in 1997 and comprised 78% of the trade receivable balance.
The other significant customer provided for approximately 5% of total revenues
in 1997 and comprised 22% of the trade receivable balance. The lease terms are
through August 2004 and July 2006, respectively.
 
RESULTS OF OPERATIONS
 
    THREE MONTHS ENDED MARCH 31, 1998 COMPARED TO THREE MONTHS ENDED MARCH 31,
     1997
 
    REVENUE.  Total revenues were $588,000 for the three months ended March 31,
1998, as compared to $360,000 for the same period in 1997. Telecommunications
Services revenues represented 100% of the revenue for these periods. This
reflected the completion of the Partnership's fiber optic network between
Houston and Corpus Christi, Texas in January 1997.
 
    OPERATING EXPENSES.  The Partnership's principal operating expenses consist
of expenses for SG&A, and depreciation and amortization. Total operating
expenses remained comparable with $264,000 for the three months ended March 31,
1998 and $272,000 for the same period in 1997.
 
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    SG&A includes cost of salaries, benefits, occupancy costs, commissions,
sales and marketing expenses and administrative expenses. SG&A remained
comparable with $67,000 for the three months ended March 31, 1998 and $65,000
for the same period in 1997. SG&A expenses will increase as the Partnership
continues to expand it telecommunications services, initiate its direct sales
operations and recruit experienced telecommunications industry personnel to
implement the Partnership's network expansion strategy.
 
    The Partnership's depreciation and amortization expense increased to
$185,000 for the three months ended March 31, 1998 as compared to $166,000 for
the same period in 1997. This increase resulted primarily from activating the
initial segment of the Partnership's fiber network during 1997, purchases of
additional equipment used in constructing the Partnership's fiber network and
purchases of other fixed assets to accommodate the Partnership's growth. The
Partnership expects that depreciation and amortization expense will continue to
increase in subsequent periods as the Partnership continues to activate
additional segments of the Partnership's planned fiber network.
 
    INTEREST EXPENSE.  For the three months ended March 31, 1998, the
Partnership's interest expense increased to $210,000 as compared to $165,000 for
the same period in 1997. The increase resulted from an increase in long-term
indebtedness.
 
    INCOME TAXES.  Effective January 1, 1998, the Partnership elected to be
taxed as a corporation and as such has recorded income taxes of $42,000 relating
to the three months ended March 31, 1998. Prior to January 1, 1998, the
Partnership allocated net income and net losses to its Partnership Interests and
therefore no income taxes were recorded for periods ended prior to January 1,
1998.
 
    NET INCOME (LOSS).  The Partnership reported net income of $114,000 for the
three months ended March 31, 1998, compared to a net loss of $77,000 for the
three months ended March 31, 1997 as a result of the factors discussed above.
 
    YEAR ENDED DECEMBER 31, 1997 COMPARED TO YEAR ENDED DECEMBER 31, 1996
 
    REVENUE.  Total revenues were approximately $1.9 million, during the year
ended December 31, 1997, as compared to $0 in 1996. Telecommunications Services
revenue represented 100% of 1997 revenues which reflected the completion of the
Partnership's fiber optic network between Houston and Corpus Christi, Texas in
January 1997.
 
    OPERATING EXPENSES.  The Partnership's principal operating expenses consist
of expenses for network access expenses, SG&A, and depreciation and
amortization. Total operating expenses increased to approximately $1.3 million
during the year ended December 31, 1997 as compared to approximately $228,000 in
the corresponding period in 1996. Network access expenses were $86,000 in 1997,
as compared to $0 in 1996, as the fiber network was placed in service in January
1997.
 
    SG&A includes the cost of salaries, benefits, occupancy costs, commissions,
sales and marketing expenses and administrative expenses. SG&A increased to
approximately $286,000 in the year ended December 31, 1997, as compared to
approximately $174,000 in 1996. The increase was due primarily to increases in
expenses related to the Partnership's first full year of operating the initial
segment of its fiber network.
 
    The Partnership's depreciation and amortization expense increased to
approximately $902,000 during the year ended December 31, 1997 as compared to
approximately $54,000 in 1996. This increase resulted primarily from activating
the initial segment of the Partnership's fiber network during 1997, purchases of
additional equipment used in constructing the Partnership's fiber network and
purchases of other fixed assets to accommodate the Partnership's growth.
 
    INTEREST EXPENSE.  During 1997, the Partnership's net interest expense
increased to approximately $774,000 as compared to $0 in 1996. The increase
resulted from an increase in interest on long-term
 
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indebtedness, and expensing interest as opposed to capitalizing interest during
the construction phase in 1996. In 1996, the Partnership capitalized
approximately $143,000 of interest. None was capitalized in 1997.
 
    INCOME TAXES.  The Partnership allocated net income and net losses to its
Partnership Interests. Therefore, no income taxes were recorded for 1997 or
1996.
 
    NET LOSS.  The Partnership realized a net loss of approximately $104,000 in
the year ended December 31, 1997, as compared to a net loss of approximately
$228,000 in the corresponding period of 1996 as a result of the factors
discussed above.
 
    YEAR ENDED DECEMBER 31, 1996 COMPARED TO YEAR ENDED DECEMBER 31, 1995
 
    REVENUE.  Total revenue decreased to $0 during the year ended December 31,
1996 from approximately $173,000 in 1995, due to the termination of both a lease
agreement and a maintenance and operating agreement between the Partnership and
the owner of the 185 route mile fiber network between Corpus Christi and
McAllen, Texas, which the Partnership designed, managed the construction of,
maintained, operated and marketed. The parties agreed to terminate the
agreements in the third quarter of 1995 due to a disagreement on the strategy of
extending the fiber network to Houston. The Partnership's sole activity in 1996
was the construction of the 260 route mile fiber network between Houston and
Corpus Christi, Texas.
 
    OPERATING EXPENSES.  Total operating expenses decreased to approximately
$228,000 from approximately $860,000 during 1995 and network access expenses
were $0 in 1996 and $503,000 in 1995 due to the discontinuation of operating and
maintenance activities in late 1995 related to the fiber network line between
Corpus Christi and McAllen, Texas.
 
    SG&A expenses decreased from approximately $326,000 in 1995 to approximately
$174,000 in 1996. The Partnership incurred lower SG&A expenses due to the
discontinuation of operating and maintenance activities in late 1995 related to
the fiber network line between Corpus Christi and McAllen, Texas.
 
    The Partnership and the owner of the 185 mile fiber network between Corpus
Christi and McAllen, Texas terminated their lease and maintenance and operating
agreements due to a disagreement on the strategy of extending the fiber network
line to Houston.
 
    The Partnership's depreciation and amortization expense increased from
approximately $31,000 in 1995 to approximately $54,000 in 1996. This increase
was primarily due to the Partnership's investment in the initial segment of its
fiber network between Houston and Corpus Christi, Texas.
 
    EXTRAORDINARY ITEM.  The Partnership recorded a gain on extinguishment of
debt of approximately $645,000 in 1995 which related to forgiveness of lease
amounts due in exchange for property and equipment provided to the owner of the
Corpus Christi to McAllen fiber network line, and the forgiveness by such owner
of current and future lease payments due from the Partnership.
 
    INCOME TAXES.  The Partnership allocated net income and net losses to its
Partnership Interests. Therefore, no income taxes were recorded for 1996 or
1995.
 
    NET LOSS.  The Partnership had a net loss of approximately $228,000 in 1996
compared to a net loss of approximately $30,000 in 1995 as a result of the
factors discussed above.
 
NEW ACCOUNTING PRONOUNCEMENTS
 
    In June 1997, the FASB issued SFAS No. 130, "Reporting Comprehensive Income"
("SFAS 130") which establishes standards for reporting and display of
comprehensive income and its components. The required disclosures for SFAS 130
will be adopted in 1998. The adoption of SFAS 130 will have no impact on the
Partnership's results of operations, financial position or cash flows and any
effect will be limited to the presentation of its disclosures.
 
                                      104
<PAGE>
    In June 1997, the FASB issued Statement of Financial Accounting Standards
No. 131, Disclosure About Segments of an Enterprise and Related Information
("SFAS 131"). SFAS 131 establishes standards for the manner in which business
enterprises are to report information about operating segments in its annual
statements and requires those enterprises to report selected information
regarding operating segments in interim financial reports issued to
shareholders. It also establishes standards for related disclosures about
products and services, geographic areas and major customers. SFAS 131 is
effective for fiscal years beginning after December 15, 1997. Financial
statements disclosures for prior periods are required to be restated. The
Partnership is in the process of evaluating the disclosure requirements. The
adoption of SFAS 131 will not have an impact on the Partnership's results of
operations, financial position or cash flows and any effect will be limited to
the presentation of its disclosures.
 
LIQUIDITY AND CAPITAL RESOURCES
 
    From January 1, 1995 through December 31, 1995, the Partnership funded
capital expenditures and cash used in operations with operating cash flow and
partners' capital contributions. From January 1, 1996 through December 31, 1997,
the Partnership funded capital expenditures and cash used in operations with the
proceeds from a $10 million long term bank loan. The Partnership intends to
finance its operations in the future through internally and externally generated
funds without relying on contributions or guarantees from its general and
limited partners. Total cash expended during the three years ended December 31,
1997 to fund capital expenditures and loan fees of long-term debt was $9.5
million. Total cash used in operations was approximately $431,362 during the
same period. Total cash provided during this same period from proceeds under the
long-term note agreement was $9.9 million. As of December 31, 1997, the
Partnership had a working capital deficit of approximately $1.1 million. As of
March 31, 1998, the Partnership had a working capital deficit of $1.3 million.
As of January 1998, the Partnership had obtained approximately $5.0 million of
contracts for sale of dark fiber, which amounts will be paid as the Partnership
completes certain milestones under the contracts (which is expected to occur in
the fourth quarter of 1998). In addition, the Partnership obtained a loan
agreement with a bank to borrow up to $10 million for the construction, start-up
and related expenses of the Houston to Corpus Christi fiber optic network.
Approximately $9.1 million was outstanding at March 31, 1998. Accrued interest
is payable monthly. Principal payments began on March 31, 1997. Principal
payment amounts escalate from .5% to 3.5% of the outstanding principal balance
existing at March 31, 1997. Additional principal payments began on June 30, 1997
based upon excess cash flow, as defined in the agreement. All unpaid principal
and accrued interest is due in full December 31, 2001, subject to acceleration
upon the earlier of consummation of the Transaction or August 31, 1998. Interest
is charged at the bank's prime rate (8.25% and 8.5% at December 31, 1996 and
1997, respectively). The current portion outstanding under this loan agreement
at December 31, 1996 and 1997 was $506,981 and $886,304, respectively. The
Partnership was in violation of certain covenants requiring maintenance of debt
as a percentage of adjusted net income as of December 31, 1996 and 1997 and
April 30, 1998, and also was in technical default of a covenant requiring the
lender's consent to the Transaction. The Partnership has obtained a waiver of
these covenant violations and has obtained the lender's consent to the
Transaction and has executed an amendment revising these covenants. The
Partnership anticipates that the amended covenant requirements will be met
through December 31, 1998.
 
    The Partnership anticipates that, based on current plans and assumptions
relating to its operations, its financial resources and equipment financing
arrangements will be sufficient to fund the Partnership's growth and operations
for approximately 12 months from the date of this Joint Proxy Statement/
Prospectus only if the Partnership limits its current construction efforts and
plans. The Partnership plans to seek sources of additional capital which may
include public and private equity and debt financings and other financing
arrangements. There can be no assurance that Holdings will be successful in
raising the funds. If unsuccessful, the scope and plans for expansion of
Telecommunications' business and the Partnership's fiber network will be
significantly curtailed. See "Offering of Proposed Notes."
 
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<PAGE>
CONTINGENCIES
 
    The Partnership has never been a party to any litigation.
 
YEAR 2000
 
    As the year 2000 approaches, the Partnership recognizes the need to ensure
its operations will not be adversely impacted by Year 2000 computer software
failures. The Partnership is addressing this issue to ensure the availability
and integrity of its financial systems and the reliability of its operational
systems. The Partnership has established processes for evaluating and managing
the risks and costs associated with this problem. The Partnership has and will
continue to make certain investments in its software systems and applications to
ensure the Partnership is Year 2000 compliant. The financial impact to the
Partnership has not yet been fully determined, however such impact is not
anticipated to have a material adverse effect on the financial condition,
results of operations or cash flow of the Partnership.
 
                                      106
<PAGE>
          MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
                        AND RESULTS OF OPERATIONS OF IWL
 
    THE FOLLOWING DISCUSSION AND ANALYSIS SHOULD BE READ IN CONJUNCTION WITH THE
SELECTED CONSOLIDATED HISTORICAL FINANCIAL DATA, CONSOLIDATED FINANCIAL
STATEMENTS AND NOTES THERETO AND THE OTHER HISTORICAL FINANCIAL INFORMATION OF
IWL CONTAINED ELSEWHERE IN THIS JOINT PROXY STATEMENT/PROSPECTUS.
 
OVERVIEW
 
    IWL's total revenues are derived from the provision of a variety of
services, including telecommunications services, project and other services and
product resales. Telecommunications services include the resale of long distance
telecommunications services, the provision of private leased lines and the
rental of telecommunications equipment and systems. IWL operates a tandem switch
at its facility in Houston, Texas to provide services as a switch-based long
distance carrier and is currently completing the installation of its Gulf Coast
regional network. Project and other services consist of the installation of
telecommunications system projects and the sale, service and maintenance of
communications systems.
 
    In connection with product resales, IWL serves as the exclusive
manufacturer's representative of Alcatel products to the U.S. oil and gas
industry. In fiscal 1996 and 1997, IWL provided services to a subsidiary of
Shell, which included the resale of a significant amount of Alcatel products.
For the years ended June 30, 1996 and 1997, the Shell subsidiary purchased from
IWL approximately $10.6 million and $7.6 million, respectively, of Alcatel
products and other equipment and hardware, representing approximately 38.0% and
25.2%, respectively, of total sales during such periods. Although profitable,
the sale of Alcatel products to the Shell subsidiary significantly reduced IWL's
gross margin in these periods. The Shell project was substantially completed in
fiscal 1997 and, therefore, is not expected to contribute in a material manner
to IWL's total sales in future periods.
 
    IWL was founded in 1981 as a contract supplier of communications technology
installation and equipment leasing services, and over the ensuing years
broadened the scope of its service offerings to include microwave, two-way radio
and related wireless services and technologies for an expanded customer base,
primarily comprised of major oil and gas companies operating in the Gulf of
Mexico region. During this period, IWL began to provide an increasing variety of
services to its oil and gas customers in other remote and underdeveloped regions
around the world, including communications services for special projects with
critical timing and other extreme or unusual challenges.
 
    To support its international expansion, in 1994 IWL began providing
telecommunications services and network support inside the former Soviet Union
to United States oil and gas customers. As IWL expanded its service offerings
and developed greater infrastructure, it commenced service as a switchless
reseller of long distance services in the United States in 1994. IWL is
continuing to expand its network through its tandem switch and the installation
of fiber optic cable and microwave radios in targeted service areas. In
connection with such expansion, IWL has also received CLEC status in Texas and
Louisiana.
 
    While annual growth rates of IWL's total sales since 1992 have ranged from
6.3% to 76.0%, IWL's quarterly operating results have varied significantly in
the past, and can be expected to vary in the future. These fluctuations in
operating results generally are caused by a number of factors, including changes
in IWL's services and product mix, levels of product resales, adverse weather
conditions in customer locations, the degree to which IWL encounters competition
in its existing or target markets, general economic conditions, the volume and
timing of orders received during the period, sales and marketing expenses
related to entering new markets, the timing of new product or service
introductions by IWL or its competitors and changes in billing rates by IWL or
its competitors. IWL's ability to grow its revenues will be dependent upon a
number of factors, many of which are not within its control and as a result no
assurance can be given that such objectives will be met.
 
                                      107
<PAGE>
    In May 1998, IWL changed its fiscal year to a December 31 year end to
coincide with the fiscal years of CapRock, Telecommunications and the
Partnership. Within the time period required under the Exchange Act (as defined
below), IWL will file a December 31, 1997 transition period Form 10-K for the
transition period from June 30, 1997 to December 31, 1997.
 
COMPARISON OF THREE MONTHS ENDED MARCH 31, 1998 AND 1997
 
    TOTAL REVENUES.  Total revenues increased approximately $90,000 or
approximately 1.1% to approximately $8.1 million for the three months ended
March 31, 1998 from approximately $8.0 million for the three months ended March
31, 1997. This increase was comprised of an increase of approximately $506,000
or approximately 22.0% in the IWL's telecommunications services revenues, an
increase of approximately $2.1 million or approximately 65.6% in IWL's project
and other services revenues and a decrease of approximately $2.5 million or 100%
in product resales to a single customer. The increase in telecommunications
services revenues was largely attributable to increased traffic on IWL's telecom
network in the Gulf Mexico from the continued expansion of IWL's ODDS services.
The increase in projects and other revenue resulted from increased sales of
telecommunications equipment and related services. The product resales to a
single customer were substantially completed in May 1997.
 
    GROSS PROFIT.  Gross profit increased approximately $1.3 million or
approximately 56.5% to approximately $3.6 million for the three months ended
March 31, 1998 from approximately $2.3 million for the three months ended March
31, 1997, representing gross profit of approximately 45.1% and approximately
28.8%, respectively. The increase in gross profit was due in principal part to
the completion of the product resales to a single customer in May 1997 and from
increased demand for higher margin services. Excluding product resales, gross
profit for the three months ended March 31, 1997 would have been approximately
$1.7 million representing a gross profit of approximately 31.5%.
 
    SELLING EXPENSES.  Selling expenses increased approximately $109,000 or
approximately 32.3% to approximately $446,000 for the three months ended March
31, 1998 from approximately $337,000 for the three months ended March 31, 1997.
Selling expenses as a percentage of total revenues increased to approximately
5.5% from approximately 4.2% during these respective periods. The increase in
selling expenses resulted from the addition of sales personnel and from
increases in travel and advertising.
 
    GENERAL AND ADMINISTRATIVE EXPENSES.  General and administrative expenses
increased approximately $467,000 or approximately 35.9% to approximately $1.7
million for the three months ended March 31, 1998 from approximately $1.3
million for the three months ended March 31, 1997. As a percentage of total
revenues, general and administrative expenses increased to approximately 21.6%
for the three months ended March 31, 1998 from approximately 16.0% for the three
months ended March 31, 1997. The increases in general and administrative
expenses as a percentage of sales was primarily due to the decline in product
resales overall. The increases in the dollar amount of general and
administrative expenses over these periods were due in principal part to
increased telephone expense, insurance expense, provision for bad debts, rent
expense and legal expenses.
 
    DEPRECIATION AND AMORTIZATION.  Depreciation and amortization expense
increased approximately $300,000 or approximately 86.5% to approximately
$647,000 for the three months ended March 31, 1998 from approximately $347,000
for the three months ended March 31, 1997. This increase was primarily
attributable to the acquisition of an additional $10.7 million of property,
plant and equipment, comprised of approximately $9.5 million in satellite,
microwave and other telecommunications equipment, approximately $1.1 million for
computers, furniture and fixtures, service vehicles and test equipment and
approximately $127,000 for building and improvements.
 
    NET INTEREST EXPENSE.  Net interest expense increased approximately $30,000
or approximately 24.0% to approximately $155,000 for the three months ended
March 31, 1998 from approximately $125,000 for the three months ended March 31,
1997. IWL's borrowings increased to approximately $10.3 million for the
 
                                      108
<PAGE>
three months ended March 31, 1998 from approximately $7.3 million for the three
months ended March 31, 1997. The increase in borrowings was used to fund
acquisitions of property, plant and equipment.
 
    OTHER INCOME NET.  Other income for the three months ended March 31, 1997
included IWL's 50% ownership interest in the earnings of Kenwood Systems Group
("Kenwood") as well as certain other asset dispositions.
 
    INCOME TAX EXPENSE.  Provision for income taxes increased approximately
$160,000 or approximately 168.4% to approximately $254,000 for the three months
ended March 31, 1998 from approximately $95,000 for the three months ended March
31, 1997 which represents an effective tax rate of approximately 39.4% and
approximately 29.3% for each period, respectively.
 
COMPARISON OF SIX MONTHS ENDED DECEMBER 31, 1997 AND 1996
 
    TOTAL REVENUES.  Total revenues decreased approximately $3.7 million or
approximately 23.5% to approximately $12.0 million for the six months ended
December 31, 1997 from approximately $15.6 million for the six months ended
December 31, 1996. This decrease was comprised of an increase of approximately
$1.2 million or approximately 33.2% in IWL's telecommunications services, a
decrease of approximately $196,000 or approximately 2.7% in IWL's project and
other services and a decrease of approximately $4.7 million or 100% in product
resales to a single customer. The increase in telecommunications services was
largely attributable to increased traffic on IWL's telecom network in the Gulf
of Mexico and the continued expansion of IWL's ODDS services in the Gulf of
Mexico. The decrease in project and other services resulted from a decrease in
product and project sales. The product resales were substantially completed in
May 1997.
 
    GROSS PROFIT.  Gross profit increased approximately $1.4 million or
approximately 36.5% to approximately $5.4 million for the six months ended
December 31, 1997 from $4.0 million for the six months ended December 31, 1996,
representing gross margins of approximately 45.2% and approximately 25.3%,
respectively. The increase in margin was due in principal part to the completion
of the product resales to a single customer in May 1997, which had lower
margins, and from changes in IWL's sales mix to higher margin services.
Excluding product resales, gross profit for the six months ended December 31,
1996 would have been approximately $3.9 million representing a gross margin of
approximately 36.0%.
 
    SELLING EXPENSES.  Selling expenses increased approximately $298,000 or
approximately 60.2% to approximately $793,000 for the six months ended December
31, 1997 from approximately $495,000 for the six months ended December 31, 1996.
The increase in selling expenses resulted from increased salary expenses related
to the addition of sales personnel and from increases in travel and advertising
expenses.
 
    GENERAL AND ADMINISTRATIVE EXPENSES.  General and administrative expenses
increased approximately $598,000 or approximately 26.7% to approximately $2.8
million for the six months ended December 31, 1997 from approximately $2.2
million for the six months ended December 31, 1996. The increase in the dollar
amount of general and administrative expenses over these periods were due in
principal part to increases in salaries and personnel cost and increases in
telephone, insurance, rent, and legal expenses.
 
    DEPRECIATION AND AMORTIZATION.  Depreciation and amortization expense
increased approximately $347,000 or approximately 54.5% to approximately
$982,000 for the six months ended December 31, 1997 from approximately $635,000
in the six months ended December 31, 1996. This increase was primarily due to
infrastructure and network expansion.
 
    NET INTEREST EXPENSE.  Net interest expense increased approximately $4,000
or approximately 1.9% to approximately $218,000 for the six months ended
December 31, 1997 from approximately $214,000 for the six months ended December
31, 1996. The increase was comprised of an increase in interest expense of
approximately $116,000 to approximately $348,000 from approximately $232,000 for
the comparable six
 
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month period in 1996. This increase was offset by an increase in interest income
of approximately $112,000 to approximately $130,000 from approximately $18,000
for the same six month period in 1996.
 
    OTHER INCOME, NET.  Other income for the six months ended December 31, 1997
included the gain of approximately $66,000 resulting primarily from the
disposition of IWL's 50% ownership in Kenwood, as well as certain other asset
dispositions, and from IWL's 50% ownership interest in the earnings of Kenwood
through the date of sale. Other income for the six months ended December 31,
1996 included IWL's 50% ownership interest in the earnings of Kenwood, as well
as certain other asset dispositions.
 
    INCOME TAX EXPENSE.  Provision for income taxes increased approximately
$130,000 or approximately 97.0% to approximately $265,000 for the six months
ended December 31, 1997 from approximately $134,000 for the six months ended
December 31, 1996 which represents an effective tax rate of 38.6% and 34% for
each period, respectively.
 
COMPARISON OF FISCAL YEARS ENDED JUNE 30, 1997 AND 1996
 
    TOTAL REVENUES.  Total revenues increased approximately $2.5 million or
approximately 9.0% to approximately $30.3 million for fiscal 1997 from
approximately $27.8 million for fiscal 1996. This increase was comprised of an
increase of approximately $1.5 million or approximately 23.1% in IWL's
telecommunications services, an increase of approximately $4.0 million or
approximately 37.4% in IWL's project and other services and a decrease of
approximately $2.9 million or approximately 27.6% in product resales to a single
customer. The increase in telecommunications services was largely attributable
to increased traffic on IWL's telecom network in the Gulf of Mexico, an increase
in the number of ODDS units in the Gulf of Mexico, and expansion of IWL's
business outside the Gulf of Mexico. The increase in project and other services
was largely due to increases in the winning of larger projects and the
associated support revenues. The product resales were substantially completed in
May 1997 and, therefore, are not expected to contribute in a material manner to
IWL's total sales in future periods.
 
    GROSS PROFIT.  Gross profit increased approximately $1.2 million or
approximately 16.6% to approximately $8.6 million for fiscal 1997 from
approximately $7.4 million for fiscal 1996, representing gross profit of
approximately 28.4% and 26.6%, respectively. The increase in gross profit was
due in principal part to the completion of the product resales to a single
customer in May 1997. Excluding product resales, gross profit for fiscal 1997
and fiscal 1996 would have been approximately $8.0 million and $6.5 million,
respectively, representing a gross profit of approximately 35.2% and 37.7%,
respectively. The decrease in gross profit was attributable to the increase of
land mobile services (which yield lower margins) in IWL's overall service mix.
 
    SELLING EXPENSES.  Selling expenses increased approximately $299,000 or
approximately 35.5% to approximately $1.1 million for fiscal 1997 from
approximately $842,000 for fiscal 1996. Selling expenses as a percentage of
total sales increased to approximately 3.8% from 3.0% during these respective
periods. The increase in selling expenses resulted from the addition of sales
personnel and from increases in travel and advertising.
 
    GENERAL AND ADMINISTRATIVE EXPENSES.  General and administrative expenses
increased approximately $447,000 or approximately 10.5% to approximately $4.7
million for fiscal 1997 from approximately $4.3 million for fiscal 1996. As a
percentage of total sales, general and administrative expenses increased to
approximately 15.5% for fiscal 1997 from approximately 15.3% for fiscal 1996.
The increase in general and administrative expenses as a percentage of sales was
primarily due to the decline in product resales overall. The increase in the
dollar amount of general and administrative expenses over these periods were due
in principal part to increased telephone expenses, insurance expenses, rent
expenses and legal expenses relating to facilities and personnel additions in
Houston, Texas and Lafayette, Louisiana.
 
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    DEPRECIATION AND AMORTIZATION.  Depreciation and amortization expense
increased approximately $400,000 or approximately 39.9% to approximately $1.4
million for fiscal 1997 from approximately $1.0 million in fiscal 1996. This
increase was primarily attributable to the acquisition of an additional
approximately $5.9 million of property, plant and equipment, comprised of
approximately $4.7 million in equipment for satellite, microwave and other
equipment, approximately $936,000 for computers, furniture and fixtures, service
vehicles and test equipment and approximately $285,000 for buildings and
improvements.
 
    NET INTEREST EXPENSE.  Net interest expense increased approximately $244,000
or approximately 90.4% to approximately $514,000 for fiscal 1997 from
approximately $270,000 for fiscal 1996. IWL's borrowings increased to
approximately $8.7 million for fiscal 1997 from approximately $3.9 million for
fiscal 1996. Borrowings were reduced in fiscal 1996 due to the receipt of
approximately $2.0 million from a subsidiary of Shell as a deposit under a
product resale contract. The increase in borrowings was used to fund
acquisitions of property, plant and equipment.
 
    OTHER INCOME, NET.  Other income for fiscal 1997 and 1996 resulted from
IWL's 50% ownership interest in Kenwood, as well as certain asset dispositions
affected in such periods. Such items were not material to IWL's operating
results for fiscal 1997 and 1996.
 
    INCOME TAX EXPENSE.  Provision for income taxes decreased approximately
$33,000 or approximately 10.4% to approximately $283,000 for fiscal 1997 from
approximately $316,000 for fiscal 1996 which represents an effective tax rate of
29.0% and 30.1% for each period, respectively.
 
COMPARISON OF FISCAL YEARS ENDED JUNE 30, 1996 AND 1995
 
    TOTAL REVENUES.  Total revenues increased by approximately $12.0 million or
approximately 75.9% to approximately $27.8 million for fiscal 1996 from
approximately $15.8 million for fiscal 1995. Of this increase, approximately
$741,000 or approximately 12.8% resulted from increases in IWL's
telecommunications services, project and other services accounted for
approximately $707,000 or approximately 7.1%, and approximately $10.6 million,
or approximately 88%, resulted in part from product resales to a single
customer. While revenues related to project and other services were relatively
constant, the increase in sales of telecommunications services reflected
continued growth of IWL's offshore network. Excluding product resales, total
sales for fiscal 1996 would have been approximately $17.3 million. Since such
product resales are expected to be substantially completed in fiscal 1997, they
are not expected to contribute in a material manner to IWL's total sales in
future periods after fiscal 1997.
 
    GROSS PROFIT.  Gross profit increased approximately $1.2 million or
approximately 19.7% to approximately $7.34 million in fiscal 1996 from
approximately $6.2 million in fiscal 1995, representing gross profit of
approximately 26.5% and 39.0%, respectively. The decrease in gross profit
primarily was due to the lower profit margin from product resales. Excluding
product resales, gross profit would have been approximately $6.5 million in
fiscal 1996, representing a gross profit of approximately 37.7%.
 
    SELLING EXPENSES.  Selling expenses decreased approximately $20,000 or
approximately 2.4% to approximately $842,000, or approximately 3.0% of total
sales, in fiscal 1996 from approximately $862,000, or approximately 5.5% of
total sales, in fiscal 1995. Advertising and promotion expenditures increased
approximately $81,000, travel expenses increased approximately $21,000 and
salaries and employee benefits decreased approximately $110,000, which reflected
the reassignment of certain employees to other departments.
 
    GENERAL AND ADMINISTRATIVE EXPENSES.  General and administrative expenses
increased approximately $720,000 or approximately 20.4% to approximately $4.2
million in fiscal 1996 from approximately $3.5 million in fiscal 1995. As a
percentage of total sales, general and administrative expenses decreased to
approximately 15.3% for fiscal 1996 from approximately 22.4% for fiscal 1995.
The increase in general and
 
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administrative expenses was primarily due to a higher level of expenses in
fiscal 1996 associated with the expansion of IWL's international operations and
related travel, including increased activity in Russia and South America as well
as a project in Bosnia that was started and completed in fiscal 1996. In
addition, general and administrative expenses were higher in fiscal 1996 due to
increased development of IWL's infrastructure to accommodate growth, which
resulted in increases in insurance costs and employee compensation through an
increased number of employees, increased telephone expenses relating to
increased activity in IWL's international operations and costs associated with
opening offices in Lafayette and New Orleans, Louisiana.
 
    DEPRECIATION AND AMORTIZATION.  Depreciation and amortization expense
increased approximately $182,000 or approximately 22.3% to approximately $1.0
million in fiscal 1996 from approximately $820,000 in fiscal 1995. This increase
was principally attributable to an additional $1.2 million of property, plant
and equipment, comprised of approximately $621,000 for satellite, microwave and
other telecommunications equipment, and approximately $579,000 for computers,
furniture and fixtures, service vehicles and test equipment.
 
    NET INTEREST EXPENSE.  Net interest expense increased approximately $26,000
or approximately 10.6% to approximately $270,000 in fiscal 1996 from
approximately $244,000 in fiscal 1995. The increase in interest expense was due
to an increase of approximately $350,000 in borrowings under IWL's credit lines.
Interest expense was minimized during fiscal 1996 as a result of a $2.0 million
deposit received from Shell under a product resale contract.
 
    OTHER INCOME, NET.  Other income in fiscal 1996 and fiscal 1995 resulted
from IWL's 50% ownership interest in Kenwood, as well as certain asset
dispositions affected in such periods. Such items were not material to IWL's
operating results in fiscal 1996 or fiscal 1995.
 
    INCOME TAX EXPENSE.  Provision for income taxes increased approximately
$23,000 or approximately 7.8% to approximately $316,000 in fiscal 1996,
representing an effective income tax rate of 30.0%, from approximately $293,000
in fiscal 1995, representing an effective tax rate of 35.4%. The decrease in the
effective tax rate in fiscal 1996 primarily was due to the availability of
foreign tax credits in such year.
 
NEW ACCOUNTING PRONOUNCEMENTS
 
    In February 1997, the FASB issued SFAS 128 effective for financial
statements issued for periods ending after December 15, 1997. SFAS 128
establishes standards for computing and presenting earnings per share and
supersedes APB No. 15, "Earnings Per Share." IWL adopted SFAS 128 and all prior
periods have been restated to conform with the requirements of this statement.
 
    In June 1997, the FASB issued SFAS No. 130, "Reporting Comprehensive Income"
("SFAS 130") which establishes standards for reporting and display of
comprehensive income and its components. The required disclosures for SFAS 130
will be included in the quarterly reports on Form 10-Q in 1998. The adoption of
SFAS 130 will have no impact on IWL's results of operations, financial position
or cash flows and any effect will be limited to the presentation of its
disclosures.
 
    In June 1997, the FASB issued SFAS No. 131, Disclosure About Segments of an
Enterprise and Related Information ("SFAS 131"). SFAS 131 establishes standards
for the manner in which business enterprises are to report information about
operating segments in its annual statements and requires those enterprises to
report selected information regarding operating segments in interim financial
reports issued to shareholders. It also establishes standards for related
disclosures about products and services, geographic areas and major customers.
SFAS 131 is effective for fiscal years beginning after December 15, 1997.
Financial statements disclosures for prior periods are required to be restated.
IWL is in the process of evaluating the disclosure requirements. The adoption of
SFAS 131 will not have an impact on IWL's results of operations, financial
position or cash flows and any effect will be limited to the presentation of its
disclosures.
 
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LIQUIDITY AND CAPITAL RESOURCES
 
    During the three months ended March 31, 1998, IWL borrowed an additional net
amount of approximately $679,000 from credit facilities, and received
approximately $25,000 from the sale and issuance of IWL's common stock. IWL
invested approximately $2.8 million in property and equipment (net of proceeds
of approximately $73,000 from certain dispositions of assets) and also expended
approximately $610,000 to acquire Integrated Telecommunications and Engineering,
LTD. in January, 1998. IWL's cash balance decreased by approximately $2.6
million to a balance of approximately $720,000 at March 31, 1998. IWL's working
capital was a deficit of approximately $400,000 at March 31, 1998. The reduction
in IWL's working capital at March 31, 1998 was the result of, among other
factors, the reclassification of IWL's Working Capital Loan (as defined below)
to current liabilities from long-term debt. The Working Capital Loan will be due
on October 31, 1998. During the twelve months ended December 31, 1997, IWL
generated approximately $1.1 million of cash in operating activities, borrowed
an additional net amount of approximately $3.6 million from credit facilities,
and received approximately $7.3 million from the sale and issuance of IWL common
stock. IWL invested approximately $9.7 million in property and equipment (net of
proceeds of approximately $115,000 from certain dispositions of assets) and
realized proceeds of approximately $529,000 from the disposition of its
investment in an unconsolidated subsidiary. These activities increased IWL's
cash balance by approximately $2.9 million to a balance of approximately $3.3
million at December 31, 1997. IWL's working capital was approximately $1.3
million at December 31, 1997.
 
    IWL has three credit facilities with Bank One, Texas, N.A., its primary
lender, to provide working capital and to finance equipment to be leased by IWL
to its customers. IWL has a secured revolving line of credit (the "Working
Capital Loan"), a secured guidance line of credit (the "Guidance Line"), and a
term facility (the "Term Loan") from Bank One, Texas, N.A. The maximum amount of
the Working Capital Loan is $5.0 million subject to a borrowing base based on
accounts receivables and inventory. The maximum amount of the Guidance Line is
$5.0 million, which will be used to finance IWL's purchase and subsequent lease
of telecommunications equipment. The Term Loan and the Working Capital Loan are
collateralized by substantially all of the personal property of IWL. IWL had
approximately $1.2 million available under the Working Capital Loan at March 31,
1998 and $4.0 million available under the Guidance Line. The Guidance Line is
reduced by the term loan created as the leased equipment is deployed. The
interest rate on each facility is, at IWL's option, Bank One's base rate or 30,
60 or 90 day adjusted LIBOR plus 2.40%. The interest rate will be subject to
downward adjustment in certain circumstances as specified in the credit
agreement. The Guidance Line, which was scheduled to expire on May 1, 1998, has
been extended to June 30, 1998. The Term Loan matures on September 1, 2001.
Borrowing availability under the Working Capital Loan is based upon eligible
accounts receivable and inventory, and a fee equal to 0.25% will be charged on
any unused portion of the Working Capital Loan. IWL was in violation of the
financial covenant requiring maintenance of a current ratio as of March 31, 1998
and was in technical default of a covenant requiring the lender's consent to the
Transaction. IWL has obtained a waiver of these covenant violations and has
obtained the lender's consent to the Transaction. In June 1998, IWL was extended
additional credit under the Working Capital Loan by the lender of up to $4.0
million. The Working Capital Loan will mature on the earlier of consummation of
the Transaction or August 31, 1998. See "Management's Discussion and Analysis of
Financial Condition and Results of Operations of Holdings--New Accounting
Pronouncements," "--Contingencies" and "--Year 2000."
 
    IWL anticipates that, based on current plans and assumptions relating to its
operations, its financial resources and equipment financing arrangements will be
sufficient to fund IWL's growth and operations for approximately 12 months from
the date of this Joint Proxy Statement/Prospectus. IWL believes that its capital
needs at the end of such period will continue to be significant and, therefore,
IWL will continue to seek additional sources of capital. Further, in the event
IWL's plans or assumptions change or prove to be inaccurate, or if IWL
consummates any unplanned acquisitions of businesses or assets, IWL may be
required to seek additional sources of capital sooner than currently
anticipated. Sources of additional
 
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capital may include public and private equity and debt financings, sales of
nonstrategic assets and other financing arrangements. See "Offering of Proposed
Notes."
 
CONTINGENCIES
 
    IWL is not currently a party to any litigation. However, IWL is from time to
time a party to ordinary litigation incidental to its business, none of which is
expected to have a material adverse effect on the results of operations,
financial position or liquidity of IWL.
 
YEAR 2000
 
    As the year 2000 approaches, IWL recognizes the need to ensure its
operations will not be adversely impacted by Year 2000 computer software
failures. IWL is addressing this issue to ensure the availability and integrity
of its financial systems and the reliability of its operational systems. IWL has
established processes for evaluating and managing the risks and costs associated
with this problem. IWL has and will continue to make certain investments in its
software systems and applications to ensure IWL is Year 2000 compliant. The
financial impact to IWL has not yet been fully determined, however such impact
is not anticipated to have a material adverse effect on the financial condition,
results of operations or cash flow of IWL.
 
                           OFFERING OF PROPOSED NOTES
 
    It is expected that after the date of this Joint Proxy Statement/Prospectus
and prior to the Effective Time, Holdings, Telecommunications and the
Partnership (with IWL as a guarantor of certain obligations with respect to the
Proposed Notes) will offer, through a private placement under Rule 144A under
the Securities Act, the Proposed Notes, although there is no assurance that the
Proposed Notes will, in fact, be offered or, if offered, will be sold. The
following is a description of the Proposed Notes that Holdings currently
anticipates offering, but there is no assurance that the terms of any Proposed
Notes actually offered and sold, if any, will not vary significantly from the
terms described in this Joint Proxy Statement/ Prospectus. Holdings currently
expects that the aggregate principal amount of the certain obligations with
respect to Proposed Notes to be offered will be approximately $150 million, but
may be more or less. The maturity date of the Proposed Notes will be ten years
after the date of their issuance, and interest on the Proposed Notes will be
payable semi-annually in cash, commencing approximately six months after the
date of issuance. The Proposed Notes will be senior unsecured obligations of
Holdings, and as such, will rank PARI PASSU in right of payment with all
existing and future unsecured and unsubordinated indebtedness of Holdings.
Holdings, Telecommunications and the Partnership (with IWL as a guarantor) will
be required to make a special offer to purchase the Proposed Notes at 101% of
their principal amount, plus accrued and unpaid interest to the date of
repayment, in the event that the Transaction is not consummated and certain
other conditions are not satisfied by August 31, 1998, or if it appears, in the
sole judgment of the Note Issuer, that the Transaction will not be consummated
or such conditions will not be satisfied by such date. Prior to the earlier of
(i) the date on which the Transaction is consummated and certain other
conditions are satisfied and (ii) the date on which payment is made for all
Proposed Notes tendered in such special offer to purchase, the net proceeds from
the offering of the Proposed Notes will be held in an escrow account pursuant to
the terms of the Escrow Agreement. To the extent amounts held in the Escrow
Account are insufficient to repurchase Proposed Notes tendered pursuant to the
special offer to purchase, Holdings, Telecommunications, the Partnership and IWL
(as guarantor) have jointly and severally agreed to repay such amounts (with an
estimated contingent liability of not more than $6 million). There can be no
assurance that Holdings, Telecommunications, the Partnership and IWL will have
sufficient funds available at the time of the special offer to purchase to repay
all Proposed Notes tendered. Following payment of all Proposed Notes tendered in
the special offer to purchase, if any Proposed Notes remain outstanding,
Holdings and IWL will be released from their obligations under the Proposed
Notes and Telecommunications and the Partnership will be required to effect
either a statutory merger or interest
 
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exchange within 60 days after the payment of all Proposed Notes tendered in the
special offer to purchase (so that Telecommunications will be the sole obligor
under the Proposed Notes). In the event the Transaction is consummated by August
31, 1998, Telecommunications and the Partnership will be released from the
Proposed Notes (and IWL will be released from its obligations under such special
offer to purchase), and Holdings will be the sole obligor thereunder.
 
    Assuming the Transaction is consummated prior to August 31, 1998, Holdings
intends to use the net proceeds from the Proposed Offering, which are expected
to be approximately $144.4 million after deduction of discounts and estimated
expenses payable by Holdings (i) to fund additional capital expenditures for the
construction and operation of its fiber optic network, (ii) fund the
installation of voice and data switches, (iii) open sales offices and add sales
support and customer service personnel, in markets throughout Texas and the Gulf
Coast region, (iv) to repay approximately $21.7 million of outstanding
indebtedness, and (v) for potential acquisitions and additional working capital
and other general corporate purposes.
 
    The indenture (the "Indenture") governing the Proposed Notes is expected to
contain certain covenants including, among other things, covenants with respect
to the following matters: (i) limitation on additional indebtedness, (ii)
limitation on certain restricted payments, (iii) limitation on dividends and
other payment restrictions affecting certain restricted subsidiaries, (iv)
limitation on issuances and sales of capital stock of certain restricted
subsidiaries, (v) limitation on issuances of guarantees by certain restricted
subsidiaries, (vi) limitation on transactions with stockholders and affiliates,
(vii) limitation on liens, (viii) limitation on any sale lease-back
transactions, (ix) limitation on certain asset sales, and (x) reports. All of
the covenants are expected to be subject to a number of important qualifications
and exceptions. The Proposed Notes will not initially be registered under the
Securities Act, provided that Holdings will, pursuant to a registration rights
agreement to be entered into concurrently with the offering of the Proposed
Notes, agree to file a registration statement with respect to an offer to
exchange the Proposed Notes for senior debt securities of Holdings with terms
identical to the Proposed Notes (except that such exchange Proposed Notes will
not contain terms with respect to transfer restrictions).
 
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<PAGE>
                    INFORMATION REGARDING TELECOMMUNICATIONS
 
BUSINESS
 
    Telecommunications commenced operations in Dallas, Texas in 1992. It is a
facilities-based provider of voice, data and broadband communications services
to interexchange carriers and other communications entities and to businesses
and consumers. Communications was a switchless, non-facilities based reseller of
long distance services prior to the investment by CapRock Investors in April
1994. The decision to become facilities based was made in October 1994.
Thereafter, how Communications delivered products changed, but the products were
essentially the same. In 1997, Telecommunications' revenues more than doubled,
growing from $23.2 million in 1996 to $46.7 million, and a $183,000 loss in 1996
improved to $1.8 million of net income in 1997. Telecommunications' volume of
monthly long distance minutes of traffic has grown from approximately 2.6
million minutes in April 1994 to approximately 75 million minutes in April 1998.
The number of Telecommunications' full-time direct and contract employees has
increased from 42 on December 31, 1996 to 85 on April 30, 1998.
 
    Telecommunications' early strategy was to double in size every year, to grow
from internal cash flow, to develop the internal systems and processes to
support its growth, and once cash flow from carrier services generated excess
capital, to build a commercial services division. In mid-1996,
Telecommunications began investing in the infrastructure to support commercial
sales activities. As a result, Telecommunications' commercial sales grew
five-fold in 1997 over 1996 and now represents approximately 30% of sales.
Telecommunications currently has a direct sales force of five carrier and 23
commercial sales people and an agent sales force numbering approximately 100
independent agents throughout Texas.
 
    Telecommunications owns a DSC DEX 600 switch in Dallas, Texas, and a smaller
PC-based switch used to provide calling card services. To extend
Telecommunications' reach across the Southwest and to lower its terminating
costs in the Western United States, Telecommunications has acquired a second DEX
600 switch, which is currently being installed in Phoenix, Arizona.
Telecommunications intends to install an advanced mainframe switch capable of
providing local and long distance services in Houston, Texas in the second half
of 1998.
 
    Telecommunications' provisioning, customer care, convergent billing and
network traffic reporting functions are performed on a proprietary software
platform, which is being developed jointly with Thompson Technology, Inc.
Telecommunications believes that this platform is scalable, flexible and well
suited to support Telecommunications' strategy to minimize the timing to
initiate local and long distance services for new customers, to provide detailed
and customized customer billing information, to respond quickly to customers'
needs and information requests, and to provide convergent billing for local,
long distance, data and private line services. See "Information Regarding
Telecommunications--Business-- Billing and Information Systems."
 
    Telecommunications currently has over 30 carrier customers including AT&T,
IXC, MCI, Qwest and Sprint, as well as various regional independent telephone
companies, such as Century Telephone Enterprises, Inc. and Lufkin Conroe
Telephone. Telecommunications offers its commercial customers flat rate pricing
with rates generally lower than those of AT&T, MCI, Sprint and WorldCom.
Telecommunications has introduced various LEC Services to customers by acquiring
such services from various ILECs on a bundled basis and reselling them.
Telecommunications also offers frame-relay and ATM data products, as well as
broadband services that it resells over the networks of other carriers.
 
PRODUCTS AND SERVICES
 
    INTEGRATED COMMUNICATIONS SERVICES
 
    Telecommunications currently offers, on a non-integrated basis, local,
domestic and international long distance, data (including ATM, frame relay, and
Internet) and broadband (including T-1, DS-3 and dark fiber) services. By the
end of 1998, Telecommunications intends to offer these services to customers as
an
 
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integrated suite of products that will be invoiced on a single, convergent bill.
Telecommunications believes that its ability to provide an integrated package of
communications services, to provide, install and maintain a broad range of
communications equipment and to invoice these services on a single, convergent
bill will enable it to (i) rapidly penetrate its targeted markets, (ii) capture
virtually all of its existing and newly acquired customers' expenditures for
telecommunications services and equipment, (iii) increase customer satisfaction,
and (iv) reduce customer turnover.
 
    Telecommunications offers (or, where indicated, intends to offer) the
following products:
 
    ONE PLUS LONG DISTANCE.  This service offers customers the ability to make
outbound switched long distance calls by simply dialing a 1, plus the area code
and phone number. Customers select Telecommunications as their primary long
distance provider by placing an order with it. This service may be used for both
domestic and international calling.
 
    LONG DISTANCE DEDICATED SERVICE.  This service is designed for larger users
with sufficient long distance traffic volume to warrant the use of dedicated
lines directly to the customer to originate calls. Instead of long distance
calls switched through the ILEC, this service uses a dedicated line that
directly connects the end user and Telecommunications' switch. This eliminates
ILEC originating access fees and reduces per minute rates to the user.
 
    LOCAL EXCHANGE SERVICES.  These services offer customers local switched and
enhanced services. Telecommunications intends to continue to obtain local
telephone services from ILECs on a wholesale basis and resell such services to
end-users. As the demand for LEC services in an area economically justifies the
introduction of a local switch, Telecommunications intends to purchase unbundled
network elements from ILECs and to begin utilizing its own value-added switching
facilities. Telecommunications believes this approach will significantly boost
its margins and return on invested capital, and will reduce the time required to
enter new markets.
 
    INTERNET.  Telecommunications currently provides Internet services to
approximately 1,000 customers. The services include a mail server, news server,
and hosting of customer web pages.
 
    INTERNET TELEPHONY.  Telecommunications plans to introduce Internet
Telephony services based on voice over IP protocols in major Texas markets.
Service will be expanded to other Texas markets in conjunction with the planned
fiber network build out. Telecommunications plans to offer its Internet
customers long distance services at significant discounts to basic rates offered
by most IXCs.
 
    DATA.  Telecommunications' fiber network has been designed with SONET
technology and broadband capabilities to provide a platform to support high
capacity, bandwidth intensive products such as frame relay, ATM, multi-media,
and Internet-related applications. Telecommunications currently resells data
products and intends to migrate those services onto its own network as that
network is built out.
 
    CUSTOMER PREMISE EQUIPMENT.  Telecommunications currently sells and installs
telephone and switchboard equipment to its offshore customers.
Telecommunications intends to add office switchboard and private branch exchange
equipment for its small and medium-sized business customers. Telecommunications
already has and intends to build its relationships with local customer premise
equipment installation companies in all of its markets for the purpose of
selling and installing customer premise equipment not otherwise provided by
Telecommunications.
 
    TOLL FREE 800/888.  This inbound service, where the receiving party pays for
the call, is accessed by dialing an 800/888 area code. This is used in a wide
variety of applications, many of which generate revenue for the user (such as
reservation centers or customer service centers).
 
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    CALLING CARD.  These traditional, basic telephone calling cards allow the
user to place calls from anywhere in the United States or Canada.
Telecommunications offers additional features such as conference calling,
international origination and speed dialing.
 
    PREPAID CARD.  Prepaid cards allow a customer to purchase and pay in advance
for a card with a fixed amount of calling time. The card is then used as a
standard calling card from which time is deducted when used. Prepaid cards may
be purchased with enhanced features similar to those of calling cards and also
may be renewed by purchasing additional time.
 
CARRIER SERVICES
 
    Telecommunications' business objective is to establish itself as the premier
carriers' carrier within Texas and the Gulf Coast region, providing voice, data
and bandwidth services over the approximately 4,300 route mile advanced fiber
network Telecommunications intends to build throughout the region.
Telecommunications carrier services consist of three principal products: the
transmission of long distance traffic processed through Telecommunications'
switches ("long distance switched services"), the sale and leasing of dark fiber
over Telecommunications' facilities ("dark fiber"), and the transmission of
voice and data over dedicated circuits ("private lines"). Telecommunications'
carrier customer base includes more than 30 national carriers, including AT&T,
WorldCom, MCI, Sprint, IXC, Qwest, as well as regional independents such as
Century Telephone, Lufkin Conroe Telephone and Pioneer Telephone Company.
 
    LONG DISTANCE SWITCHED SERVICES.  The domestic and international long
distance switched services provided by Telecommunications are processed through
Telecommunications' digital switches and carried over long distance circuits and
other transmission facilities owned or leased by Telecommunications.
Telecommunications sells these services on a per-call basis, charging by minutes
of use ("MOU"), with payment due monthly after services are rendered.
Telecommunications' volume of monthly long distance minutes of traffic has grown
from 2 million minutes in April 1994 to approximately 75 million minutes in
April 1998, which included 4.5 million minutes of traffic terminated in Mexico.
 
    PRIVATE LINE SERVICES.  Telecommunications' private line customers include
non-facilities based carriers requiring dedicated long distance transmission
capacity to carry their customers' long distance traffic and facilities-based
carriers that require long distance transmission capacity where they have
geographic gaps in their facilities, and additional capacity or require
geographically diverse routing. Services are provided through private line
contracts, requiring fixed monthly payments, generally in advance, some of which
contain "take or pay" commitments.
 
SALES AND MARKETING
 
    INTEGRATED COMMUNICATIONS SERVICES.  Telecommunications focuses its retail
sales efforts on small to medium-sized businesses in Texas and the Gulf Coast
region. Telecommunications markets its integrated telecommunications services
primarily through two channels: Telecommunications' direct sales force and its
network of independent sales agents.
 
    Telecommunications' direct sales force consisted of 23 account executives in
Dallas and Houston as of May 31, 1998. Telecommunications also has 100 sales
agents located throughout Texas. Telecommunications intends to recruit, train
and deploy an additional 75 account executives by the end of 1998 and an
additional 100 account executives by the end of 1999. Telecommunications' sales
personnel call on prospective and existing business customers, conduct analyses
of business customers' telecommunications usage histories and service needs, and
demonstrate how Telecommunications' various service packages will improve a
customer's communications capabilities in a cost-effective manner. Sales
personnel identify potential business customers by several methods, including
customer referral, marketing research, telemarketing and other networking
alliances such as endorsement agreements with trade associations and local
chambers of commerce. Telecommunications' sales personnel work closely with
Telecommunications'
 
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<PAGE>
engineers and field support specialists to address customers' network and
service delivery needs and to design new service products and applications for
customers.
 
    Telecommunications' Agent program, established in 1996, is a network of
independent telephone equipment vendors and other agents authorized by
Telecommunications to market its products and services. As of May 31, 1998,
approximately 100 agents were participating in the Corporate Agent program.
Authorized dealers receive recurring commissions based on products and services
sold, volume of usage and retention of the customer. Telecommunications has four
agent managers who actively recruit new agents. Telecommunications intends to
add an additional 25 agents by the end of 1998 and an additional 50 agents by
the end of 1999.
 
    Telecommunications' direct sales force and its authorized dealer agents are
trained to emphasize Telecommunications' customer focused sales and customer
service approach. Telecommunications reinforces this approach by tying a portion
of each sales representative's and dealer agent's compensation directly to the
longevity of their customer accounts. Telecommunications' marketing strategy is
built upon the belief that customers prefer to have one company serve all of
their telecommunications needs. As part of this strategy, Telecommunications
generally assigns to each customer its own dedicated field support specialist,
thereby providing the customer with a single point of contact to address its
telecommunications needs with a combination of products and services designed to
meet the customer's needs. Telecommunications believes that this personalized
attention to a business needs, coupled with Telecommunications' ability to
provide one fully integrated billing statement for all of the services that it
offers, is appealing to both existing and prospective customers.
 
    Telecommunications intends to rapidly build its direct sales force
throughout Texas, Louisiana and Oklahoma over the next two years.
Telecommunications intends to recruit new sales representatives by emphasizing
the Company's extensive and advanced fiber communications network, attractive
compensation and commission plans, stock option programs, and marketing support
plans. Additionally, Telecommunications believes it will be able to attract and
retain highly qualified sales and support personnel by offering them the
opportunity to: (i) work with an experienced and success proven management team
in building a developing, entrepreneurial company; (ii) market an integrated
package of communications products and services; and (iii) participate in the
potential economic returns made available through a results oriented
compensation package emphasizing sales commissions and equity incentives.
 
    CARRIER SERVICES.  Telecommunications established a carrier services sales
force in 1992. This group markets carrier services to telecommunications
carriers and other large end-user customers. Telecommunications believes it can
compete effectively in this market based on a combination of price, reliability,
advanced technology, rout diversity, ease of ordering and customer service.
Telecommunications markets its carrier services primarily through five direct
sales personnel and four support specialists located in Telecommunications'
headquarters in Dallas. In general, these sales professionals locate potential
customers for Telecommunications' carrier services through customer referrals,
trade shows and industry alliances. When calling on a potential customer,
Telecommunications' sales professionals work with network engineers to gain a
better understanding of the customer's operations and bulk telecommunications
transmission needs to develop innovative application-specific solutions to each
customer's requirements. Telecommunications also markets its carrier services
through trade forums and generally attends industry trade shows.
 
COMPETITION AND GOVERNMENT REGULATION
 
    The telecommunications industry and Telecommunications' provision of
communications services is subject to intense competition and extensive federal
and state regulation. See "Competition" and "Regulation and Licenses."
 
                                      119
<PAGE>
CUSTOMER CARE AND SUPPORT SYSTEMS
 
    Telecommunications strives to provide superior customer care and support for
its customers and believes that personal contact with its customers through
customer service representatives is a significant factor in customer acquisition
and retention. Telecommunications intends for the number of customer service
agents to grow rapidly through 1999 as the number of direct and agent sales
representatives grows.
 
    Telecommunications operates a call center in Dallas, Texas staffed by
Telecommunications" customer service employees, who have completed a
certification and training program provided by Telecommunications. To enhance
the effectiveness of the customer service representatives, Telecommunications,
in addition to the initial training program, provides ongoing training to all
customer service representatives. Telecommunications' customer service
department uses on-line, real-time automated systems that provide notes from all
prior contacts with the customer, and provide a complete account and payment
history for customers directly billed by Telecommunications. Through this
proprietary contact management software, Telecommunications is able to provide a
high level of customer care. As Telecommunications' sales force and operations
expand, Telecommunications intends to recruit and train additional sales
personnel to support its operations.
 
    Telecommunications handles its provisioning, customer care, convergent
billing and reporting functions on a proprietary software platform ("System"),
which is being jointly developed by Telecommunications and Thompson Technology,
Inc., a Texas corporation ("TTI"). TTI and Telecommunications jointly own the
System, which has been in use since January 1997 and continues to be enhanced.
These OSS and other back office systems are required to enter, schedule,
provision, and track a customer's order from the point of sale to the
installation and testing of service and also include or interface with trouble
management, inventory, billing, collection and customer service systems. The
system is scalable and flexible to support Telecommunications' expected future
back office requirements. The system, when fully implemented, will enable
Telecommunications to: (i) minimize the time to initiate local and long distance
services for new customers through the LEC (commonly referred to as
provisioning), (ii) provide detailed and customized customer billing
information, (iii) respond quickly to customer's needs and information requests,
and (iv) monitor and analyze traffic, financial and operating trends.
Telecommunications believes that this system, when fully implemented, will
provide a significant competitive advantage in terms of cost, processing large
order volumes, and customer service as compared to ILECs using legacy systems
and CLECs that outsource back-office services or that do not have a modern OSS
platform. See "--Related Party Transactions."
 
EMPLOYEES
 
    As of April 30, 1998, Telecommunications employed 85 employees of which
approximately 42 perform corporate and administrative services, approximately
ten provide Network Construction Services, approximately 23 provide Commercial
Services, approximately 9 provide Carrier Services, and approximately 13 perform
network operations and related functions.
 
PROPERTIES
 
    Telecommunications operates out of three separate locations in Dallas, Texas
consisting of approximately 19,200 square feet of general and administrative
office space under leases that expire at various times in the future. As of
April 30, 1998, Telecommunications was negotiating leases for switch sites in
both Phoenix, Arizona and Houston, Texas. Telecommunications believes that
suitable additional space will be available, as needed, to accommodate further
physical expansion of corporate operations.
 
                                      120
<PAGE>
LEGAL PROCEEDINGS
 
    Telecommunications is party to ordinary litigation incidental to its
business, none of which is expected to have a material adverse effect on the
results of operations, financial position or cash flow of Telecommunications.
 
                        DIRECTORS AND EXECUTIVE OFFICERS
 
    The following table provides certain information regarding the directors and
executive officers of Telecommunications as of December 31, 1997:
 
<TABLE>
<CAPTION>
NAME                                  AGE                            POSITIONS
- --------------------------------      ---      ------------------------------------------------------
<S>                               <C>          <C>
Jere W. Thompson, Sr............          65   Chairman of the Board and Director
Jere W. Thompson, Jr............          41   President and Director
Timothy M. Terrell..............          35   Executive Vice President and Director
Timothy W. Rogers...............          35   Executive Vice President and Director
Scott L. Roberts................          36   Executive Vice President and Director
Mark Langdale...................          43   Director
</TABLE>
 
    Jere W. Thompson, Sr. has served as Chairman and a Director of
Telecommunications since April 1994. Mr. Thompson joined The Southland
Corporation in 1956 and served in various capacities, including President from
1973 and President and Chief Executive Officer from May 1986 to March 1991, and
as a director from 1962 through 1996. Mr. Thompson is president of The
Williamsburg Corporation, an investment company which owns shares of
Telecommunications Common Stock and has served in such capacity since its
inception in 1958. Mr. Thompson currently serves as Chairman of the National
Center of Policy Analysis, and on the Boards of the Communities Foundation of
Texas, the Brady Center, The University of Texas Chancellor's Council, The
University of Texas Development Board, the Longhorn Foundation, the St. Paul
Medical Center Foundation and the Catholic Charities Foundation. Mr. Thompson
has a B.A. in Business from The University of Texas.
 
    Jere W. Thompson, Jr. has served as President of Telecommunications since
April 1994. In July 1992, Mr. Thompson founded the Partnership and is President
of its General Partner. From 1978 to 1980, Mr. Thompson worked at Goldman, Sachs
& Co. as an analyst in its Investment Banking Division. From 1980 through 1982,
Mr. Thompson attended graduate school at The University of Texas Graduate School
of Business. From 1982 to 1986, Mr. Thompson worked in commercial real estate as
a broker and then with Trammell Crow Community Development Company. In 1987, he
joined The Thompson Company where he became a Vice President and assisted in the
acquisition and management of several of The Thompson Company portfolio
companies. Since 1989, Mr. Thompson has been a member of the Board and since
1995 he served as Chairman of the North Texas Tollway Authority and its
predecessor, the Texas Turnpike Authority. Mr. Thompson is also a board member
of the Cistercian Preparatory School. Mr. Thompson has a B.A. in Economics from
Stanford University and an M.B.A. from the University of Texas Graduate School
of Business.
 
    Timothy M. Terrell has served as Executive Vice President and a Director of
Telecommunications since April 1994. In 1992, Mr. Terrell co-founded Synergy
Telecommunications, Inc. ("Synergy"), a telecommunications company responsible
for marketing a fiber optic network in West Texas, Oklahoma, Colorado and New
Mexico and from February 1993 to April 1994 served as one of its three executive
officers. In April 1994, CapRock Investors purchased half of Synergy and
subsequently Synergy changed its name to Telecommunications. From November 1986
to June 1988, Mr. Terrell was a major account representative with Sprint. From
July 1988 to January 1989, Mr. Terrell held the same position at Metromedia Long
Distance. From February 1989 to January 1993, Mr. Terrell was Director of Sales
of Qwest and acted as Vice President of Sales during a transition period
following Qwest's buyout by MCI. Mr. Terrell has a BBA in Marketing from
Southwest Texas State University.
 
                                      121
<PAGE>
    Timothy W. Rogers has served as Executive Vice President and a Director of
Telecommunications since April 1994. In 1992, Mr. Rogers was a co-founder of
Synergy and from February 1992 to April 1994 served as one of its three
executive officers. From August 1989 to December 1991, Mr. Rogers was a sales
manager of Qwest. From July 1988 to August 1989, Mr. Rogers was a Senior Account
Executive for Southwest Network Services. From April 1987 to June 1988, Mr.
Rogers was an account executive with Sprint. Mr. Rogers has a BBA in Marketing
from Southwest Texas State University.
 
    Scott L. Roberts has served as Executive Vice President and a Director of
Telecommunications since April 1994. In 1992, Mr. Roberts co-founded Synergy and
served as one of its three executive officers from February 1992 to April 1994.
From September 1989 to February 1992, Mr. Roberts was a carrier sales manager of
Qwest. From April 1987 to September 1989, Mr. Roberts was a major account
representative with Sprint. Mr. Roberts has a B.S. in Business Administration
from the University of Nebraska.
 
    Mark Langdale has served as a Director of Telecommunications since April
1994 and Secretary of the General Partner since 1992. Mr. Langdale is President
of Posadas USA, Inc., a subsidiary of Grupo Posadas S.A. De C.V., a hotel
management company domiciled in Mexico, a position he has held since 1989. From
1987 to 1989, he served as Vice President for Thompson Realty Company, a real
estate investment company. Mr. Langdale currently serves as a member of the
Board of Directors of Grupo Posadas S.A. De C.V., a director of the Texas
Department of Commerce Policy Board and as Chairman of the Texas Department of
Economic Development.
 
EXECUTIVE COMPENSATION
 
    SUMMARY COMPENSATION TABLE.  The following table set forth certain
compensation awarded or paid by Telecommunications to its Chairman of the Board
and President and the other executive officers of Telecommunications whose total
annual salary and bonus for services to Telecommunications exceeded $100,000 in
the fiscal year ended December 31, 1997.
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                                       LONG-TERM
                                                                                     COMPENSATION
                                                             ANNUAL COMPENSATION        AWARDS
                                                          -------------------------     OPTIONS       ALL OTHER
NAME AND PRINCIPAL POSITION                                 SALARY        BONUS        (SHARES)     COMPENSATION
- --------------------------------------------------------  ----------  -------------  -------------  -------------
<S>                                                       <C>         <C>            <C>            <C>
Jere W. Thompson, Jr....................................  $  122,283  $  100,000(1)       --             --
  Chairman of the Board and
  President
Timothy M. Terrell......................................  $  125,781  $  125,000(1)       --             --
  Executive Vice President
Timothy W. Rogers.......................................  $  126,814  $  125,000(1)       --             --
  Executive Vice President
Scott L. Roberts........................................  $  124,521  $  125,000(1)       --        $    4,937(2)
  Executive Vice President
</TABLE>
 
- ------------------------
 
(1) Represents bonus amount earned in fiscal year 1997 and paid in fiscal year
    1998.
 
(2) Represents payment of club dues for Mr. Roberts.
 
EMPLOYEE BENEFIT PLANS AND ARRANGEMENTS
 
    Telecommunications entered into employment agreements with Vice Presidents
Timothy W. Rogers, Timothy M. Terrell and Scott L. Roberts in April 1994. The
agreements had contract terms from April 1994 to April 2000, with base
compensation as provided for in the agreements. The agreements
 
                                      122
<PAGE>
included an annual bonus of $25,000 per individual to be paid April 15th (or
accrued if not paid), through April 2000. The agreements were terminated in
connection with new agreements entered into with Holdings in connection with the
Mergers.
 
    Telecommunications established a nonqualified stock option plan in September
1997. Options granted under this plan vest 20% per year and have a term of 10
years. Vesting accelerates in the event of an initial public offering or a
change of control; however, the Mergers do not cause such acceleration of
vesting to occur. In September 1997, Telecommunications granted approximately
208,550 options to employees. These options will be assumed by Holdings in
connection with the Mergers.
 
    Telecommunications established a 401(k) Savings Plan as of July 1, 1996.
Contributions to the plan include employer discretionary contributions and
discretionary matching contributions. Employees vest in employer match and are
fully vested after 6 years of service. A favorable determination letter was
received by the IRS on November 17, 1997.
 
                           RELATED PARTY TRANSACTIONS
 
    Telecommunications' OSS System is being developed by TTI, which is owned by
David E. Thompson, a brother of Jere W. Thompson, Jr. Telecommunications
currently is spending approximately $25,000 to $30,000 a month for the OSS
System's development. No marketing or sales to third parties have been made. The
agreement between Telecommunications and TTI transfered all rights to the OSS
System developed by Telecommunications and TTI into RiverRock Systems Ltd., a
Texas limited partnership ("River Rock"), with Telecommunications owning a 49%
limited partnership interest, David E. Thompson owning a 50% limited partnership
interest and TTI becoming the general partner and owning a 1% general
partnership interest. Telecommunications has a royalty-free, perpetual and
non-exclusive license for the use of the OSS System. Telecommunications also
receives upgrades, modifications and other support for three years, without the
payment of any fees or royalties. Thereafter, Telecommunications pays the same
fees and royalties for OSS System upgrades, modifications and support as other
licensees of River Rock. Telecommunications has committed up to $700,000 to fund
future, continued development of the OSS System. See "--Customer Care and
Support Systems."
 
    The Williamsburg Corporation, a Texas corporation of which Jere W. Thompson,
Sr., Chairman of the Board and a director of Telecommunications, is the
president, lent Telecommunications $1,170,000 in 1995 at the rate of 13% per
annum and payable on demand or the due date of March 31, 1998. During the fiscal
year ending December 31, 1996, The Williamsburg Corporation converted $750,000
of the outstanding principal amount of such note into 727,925 shares of
Telecommunications common stock. The remaining principal balance of the note,
together with interest thereon, was repaid by Telecommunications during the
fiscal year ending December 31, 1997. Jere W. Thompson, Sr. is the father of
Jere W. Thompson, Jr.
 
    The Partnership has an administrative services agreement with
Telecommunications pursuant to which Telecommunications and its employees
provide administrative and management services for the Partnership. The
Partnership reimburses Telecommunications for the direct costs of the network,
plus 5%. The total general and administrative expenses reimbursed was $0,
$77,000 and $150,948 for the years ended December 31, 1995, 1996 and 1997,
respectively. In addition, as payment for marketing services, the Partnership
will pay 7% of any additional lease payments generated as a result of
Telecommunications efforts. There were no payments made in 1995, 1996 and 1997.
Holdings intends to terminate the administrative services agreement upon
completion of the Transaction.
 
    Telecommunications currently leases private line services from TISP, Inc.,
("TISP") which is owned by Patrick J. Thompson, a brother of Jere W. Thompson,
Jr. Total payments to TISP in 1997 were $764,742. Pricing of private line
services is a function of the capacity, term and distance of the circuit
involved. Circuits are usually available from multiple vendors, and vendors are
selected on the basis of price, speed of provisioning and circuit diversity.
Rates are fixed and payable monthly, generally in advance. The actual rates paid
to TISP are determined in the same manner as rates for unrelated parties.
 
                                      123
<PAGE>
    In 1994, Telecommunications entered into executed promissory notes each
payable to the order of Scott L. Roberts, Timothy M. Terrell and Timothy W.
Rogers, each Executive Vice Presidents of Holdings and of Telecommunications,
relating to 334 shares of common stock of Telecommunications repurchased from
each of them with such shares of stock pledged by Telecommunications to repay
the notes. The aggregate purchase price for the 334 shares from each individual
was $50,000. Each of the original note agreements are in the amount of $50,000
with no stated interest rate. The notes have been discounted using an interest
rate of 5.8% and are payable in three annual installments beginning April 1998.
The aggregate amount outstanding relating to these notes, net of unamortized
discount was $112,827 and $128,166 as of December 31, 1996 and 1997,
respectively. The unamortized discount was $37,173 and $21,834 as of December
31, 1996 and 1997, respectively. Upon completion of the Transaction, Holdings
intends to repay the notes.
 
    Telecommunications has a revolving credit facility with Bank One Texas N.A.
in the amount of $2,500,000, which is guaranteed by Jere W. Thompson, Jr. The
release of this guaranty is a condition to the closing of the Transaction. See
"Information Regarding the Partnership--Related Party Transactions."
 
                SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS
                      AND MANAGEMENT OF TELECOMMUNICATIONS
 
    The following table sets forth certain information regarding the beneficial
ownership of Telecommunications' Common Stock as of April 15, 1998 (and prior to
giving effect to the Mergers and the Interest Exchange) by (i) each person who
is known by Telecommunications to own beneficially more than five percent (5%)
of Telecommunications Common Stock, (ii) each of Telecommunications' executive
officers, directors and director nominees, and (iii) all of the current
executive officers and directors of Telecommunications as a group. The
information contained in this table with respect to beneficial ownership
reflects "beneficial ownership" as defined in Rule 13d-3 under the Exchange Act
which means generally any person who, directly or indirectly, has or shares
voting power or investment power with respect to a security. Shares of
Telecommunications Common Stock not outstanding but deemed beneficially owned by
virtue of the right of an individual or group to acquire shares within 60 days
after April 15, 1998 are treated as outstanding only when determining the amount
and percentage of Telecommunications Common Stock owned by such individual or
group. All information with respect to the beneficial ownership of any principal
shareholder was furnished by such principal shareholder and Holdings believes
that except as otherwise noted or pursuant to community property laws, each
shareholder has sole voting and sole investment power with respect to the shares
shown. The address of each person listed is Two Galleria Tower, 13455 Noel Road,
Suite 1925, Dallas, Texas 75240, except as otherwise indicated.
 
                                      124
<PAGE>
                          SHARES OF TELECOMMUNICATIONS
 
<TABLE>
<CAPTION>
                                                                    COMMON STOCK BENEFICIALLY
                                                                              OWNED
                                                                   ---------------------------
                                                                    NUMBER OF     PERCENTAGE
NAME                                                                  SHARES     OWNERSHIP(1)
- -----------------------------------------------------------------  ------------  -------------
<S>                                                                <C>           <C>
CapRock Investors(2).............................................     4,835,514         46.5%
Jere W. Thompson, Jr.(2).........................................     4,835,514         46.5%
Mark Langdale(3)
  5950 Berkshire, Suite 990
  Dallas, TX 75225...............................................     4,835,514         46.5%
Scott L. Roberts.................................................     1,611,838         15.5%
Timothy M. Terrell...............................................     1,611,838         15.5%
Timothy W. Rogers................................................     1,611,838         15.5%
The Williamsburg Corporation(4)
  Two Turtle Creek Village
  3838 Oak Lawn Ave., Suite 1850
  Dallas, TX 75219...............................................       727,926          7.0%
Jere W. Thompson, Sr.(5)
  Two Turtle Creek Village
  3838 Oak Lawn Ave., Suite 1850
  Dallas, TX 75219...............................................     5,563,440         53.5%
All executive officers and directors as a group (six persons)....    10,398,954        100.0%
</TABLE>
 
- ------------------------
 
(1) Based upon 10,398,954 shares of Telecommunications Common Stock issued and
    outstanding.
 
(2) Represents 4,835,514 shares held of record by CapRock Investors. CapRock
    Investors is a Texas joint venture, of which Jere W. Thompson, Jr. is the
    managing venturer and in which he owns a controlling interest. The Joint
    Venture Agreement of CapRock Investors grants to Mr. Thompson, Jr. certain
    authorities, including deciding and casting all votes on behalf of CapRock
    Investors as a shareholder of Telecommunications. As a consequence, both
    CapRock Investors and Mr. Thompson may each be deemed to be the beneficial
    owner of all of the shares.
 
(3) Represents 4,835,514 shares held of record by CapRock Investors. Under the
    Joint Venture Agreement of CapRock Investors, the approval of a
    majority-in-interest of the venturers is required to approve the disposition
    of the shares. Because of the ownership interest of Jere W. Thompson, Jr.,
    Mark Langdale, and Jere W. Thompson, Sr. (23.5%, 42.5% and 30.9%,
    respectively), two of the three acting together can authorize or prevent a
    disposition of shares. As a result, each may be deemed to be the beneficial
    owner of all of the shares.
 
(4) The Williamsburg Corporation, which is the record owner of 727,926 shares of
    Telecommunications Common Stock, is a Texas corporation, of which Mr. Jere
    W. Thompson, Sr. is the president and a director; as a result each of them
    has shared voting, investment, and dispositive power with respect to the
    727,926 shares held by The Williamsburg Corporation.
 
(5) Represents 727,926 shares held of record by The Williamsburg Corporation and
    4,835,514 shares held of record by CapRock Investors. Under the Joint
    Venture Agreement of CapRock Investors, the approval of a
    majority-in-interest of the venturers is required to approve the disposition
    of the shares. Because of the ownership interest of Jere W. Thompson, Jr.,
    Mark Langdale, and Jere W. Thompson, Sr., two of the three acting together
    can authorize or prevent a disposition of shares. As a result, each may be
    deemed to be the beneficial owner of all of the shares.
 
                                      125
<PAGE>
                     INFORMATION REGARDING THE PARTNERSHIP
 
BUSINESS
 
    The Partnership is a facilities-based provider of broadband
Telecommunications Services to interexchange carriers, other communications
entities and businesses. The Partnership had no revenues in 1996. In 1997 it had
revenues and a net loss of $1.9 million and $104,000, respectively.
 
    The Partnership began operations in 1992 to design, manage the construction
of, operate, maintain and market a 185 route mile fiber optic network in South
Texas. In 1996, the Partnership entered into a ten year contract for the lease
of dark fiber over a 260 route mile fiber network between Houston and Corpus
Christi, Texas. The Partnership completed construction of the network in January
1997. In January 1998, the Partnership entered into a contract for the sale of
dark fiber between San Antonio and Laredo, Texas. The Partnership expects to
complete the construction of approximately 500 additional route miles of fiber
network from San Antonio to Laredo, McAllen, Harlingen, Brownsville and Corpus
Christi, Texas by the end of 1998. The Partnership intends to expand its
regional fiber network to approximately 4,300 route miles throughout Texas and
the Gulf Coast region by the end of 2000. The Partnership's ability to expand
its network and grow its revenues will be dependent upon a number of factors,
including the availability of financing, and as a result no assurance can be
given that its expansion plans will be met.
 
    The Partnership provides dedicated line services over the Partnership's
owned fiber network to interexchange carriers and other telecommunications
providers for terms of one year or longer. High volume capacity service
agreements and dedicated line service agreements generally provide for "take or
pay" monthly payments at fixed rates based on the capacity term and length of
circuit used. Customers are typically billed on a monthly basis and also may
incur an installation charge or certain ancillary charges for equipment. After
contract expiration, the contracts may be renewed or the services may be
provided on a month-to-month basis. The Partnership is expanding its network to
increase its revenue stream and reduce per unit costs, targeting capacity sales
on a segment-by-segment basis as the Partnership's network is deployed and
activated, and is increasingly seeking longer-term, high-volume capacity
agreements from major carriers. In addition to traditional telecommunications
carriers, the Partnership is marketing to ISPs and other data service companies.
 
    As of December 31, 1997, substantially all of the Partnership's revenues
were derived from two customers. One of the customers provided for approximately
93% of total revenues in 1997 and comprised 78% of the trade receivable balance.
The other significant customer provided for approximately 5% of total revenues
in 1997 and comprised 22% of the trade receivable balance. The lease terms are
through August 2004 and July 2006, respectively.
 
NETWORK
 
    The Partnership owns a 260 route mile fiber optic network along the Texas
Gulf Coast, linking Houston, Victoria and Corpus Christi, Texas, and is
currently constructing approximately 500 additional route miles of fiber network
in Texas. The Partnership expects to expand its regional network to
approximately 4,300 route miles by the end of 2000. The Partnership's fiber
network, once completed, is expected to create the most extensive alternative
fiber network in Texas and the Gulf Coast region and will enable the Partnership
to serve nearly every primary, secondary and tertiary city in Texas, Louisiana,
Oklahoma and Arkansas. By installing 96 fibers, capable of supporting dense wave
division multiplexing, and two spare ducts, the network will be scalable and
will have significant flexibility to add capacity to meet future demand. The
routes of the network expansion are planned to be generally geographically
diverse from the existing fiber networks of AT&T, MCI, Sprint, WorldCom, IXC and
Qwest. The network will provide other carriers with diverse routing, and will
meet their anticipated significant future demands for capacity. The fiber
network will also interconnect with the fiber networks of selected Mexican
carriers at multiple border crossings. See "Offering of the Proposed Notes."
 
                                      126
<PAGE>
SERVICE AGREEMENTS
 
    The Partnership provides high volume transmission capacity services through
service agreements for terms of one year or longer. Dedicated line services are
generally offered under service agreements for an initial term of one year. High
volume capacity service agreements and dedicated line service agreements
generally provide for "take or pay" monthly payments at fixed rates based on the
capacity term and length of circuit used. Customers are typically billed on a
monthly basis and also may incur an installation charge of certain ancillary
charges for equipment. After contract expiration, the contracts may be renewed
or the services may be provided on a month-to-month basis.
 
COMPETITION
 
    The telecommunications industry and the Partnership's provision of
communications services is subject to intense competition and extensive federal
and state regulation. See "Competition" and "Regulation and Licenses."
 
EMPLOYEES
 
    As of April 30, 1998, the Partnership leased the services of two fiber
technicians and five network construction personnel from Telecommunications. The
Partnership uses the services of independent contractors for installation and
maintenance of portions of its network.
 
PROPERTIES
 
    The Partnership's network, including the completed portions and the portions
currently being constructed, and its component assets are the principal
properties owned by the Partnership. The Partnership owns substantially all of
the telecommunications equipment required for its business and owns or leases
various sites for transmission facilities. The Partnership installed fiber optic
cable is laid under various public and private rights-of-ways. Other fixed
assets are located at various locations in geographic areas served by the
Partnership.
 
LEGAL PROCEEDINGS
 
    The Partnership is not currently a party to any litigation.
 
DIRECTORS AND EXECUTIVE OFFICERS
 
    Jere W. Thompson, Jr. is the President and a director of the General
Partner. Mark Langdale is the Secretary and a director of the General Partner.
Mr Thompson received compensation from the Partnership totaling $24,638 in 1997.
Additionally, Mr. Thompson received $205,908 from the General Partner in 1997,
which was based upon the total construction services revenue earned by the
General Partner, which has a construction management agreement with the
Partnership. Mr. Langdale earned loan commitment fees, loan guaranty fees and a
subsequent guarantee fee in return for guaranteeing the entire amount of the
construction loan. As of March 31, 1998, guaranty and commitment fees together
with accrued interest due to Mark Langdale amounted to approximately $157,000.
Additionally the general partner, CapRock Systems, Inc. agreed to pay Mr.
Langdale a $20,000 guaranty fee which was paid in May 1998. See "Information
Regarding the Partnership--Related Party Transactions." See "Information
Regarding Telecommunications--Directors and Executive Officers."
 
EXECUTIVE COMPENSATION
 
    The following table sets forth certain compensation awarded or paid by the
General Partner or the Partnership to the President of the General Partner.
 
                                      127
<PAGE>
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                                                 LONG-TERM
                                                                 ANNUAL COMPENSATION           COMPENSATION
                                                          ---------------------------------   AWARDS OPTIONS      ALL OTHER
NAME AND PRINCIPAL POSITION                                 YEARS     SALARY       BONUS         (SHARES)       COMPENSATION
- --------------------------------------------------------  ---------  ---------  -----------  -----------------  -------------
<S>                                                       <C>        <C>        <C>          <C>                <C>
Jere W. Thompson, Jr....................................       1997  $  24,628          --              --      $  205,908(1)
  President of the General Partner
</TABLE>
 
- ------------------------
 
(1) Such amounts represent the fees paid by the General Partner and were based
    upon the total construction services revenues earned by the General Partner
    in 1996 and 1997.
 
RELATED PARTY TRANSACTIONS
 
    Mark Langdale, Joe C. Thompson, Jr., The Florida Company (which is owned by
Joe C. Thompson, the uncle of Jere W. Thompson, Jr.), The Hayden Company (which
is owned by John P. Thompson, the uncle of Jere W. Thompson, Jr.) and Jere W.
Thompson, Sr., who are partners of the Partnership, guaranteed portions of the
$10,000,000 loan from Bank One, Texas, N.A. to the Partnership in 1996 and each
received in exchange for each $1 million of indebtedness guaranteed (i) a 2.67%
limited partnership interest in the Partnership, (ii) a commitment fee equal to
1% of the amount guaranteed, which accrued interest at the rate of 12% per annum
commencing July 1, 1997 and increases 2% on each July 1 thereafter that the
commitment fee remains unpaid and (iii) an annual loan guaranty fee equal to 7%
of the amount of each partner's guarantee multiplied by a fraction, the
numerator being the lesser of $8 million or the average outstanding daily
principal of the loan guaranteed and the denominator being $8 million. The
guarantees (other than the joint and several guarantees of Mark Langdale and
Jere W. Thompson, Jr.) were released in April 1997 and, therefore, no guaranty
fees have been accrued subsequent to April 1, 1997 other than the accrued
interest. The total commitment fees, loan guarantee fees and accrued as of
December 31, 1996 and 1997 were approximately $208,000 and $406,000,
respectively. Additionally, in exchange for Mark Langdale remaining on his joint
and several guaranty, the General Partner agreed to pay him $20,000 which was
paid in 1998.
 
    The Partnership retained Telecommunications to manage and administer the
operations of the network. In consideration for these services, the Partnership
will reimburse direct costs of the network plus 5%, payable monthly. The total
general and administrative expenses paid to the General Partner was $0, $77,000
and $150,948, respectively for the years ended December 31, 1995, 1996 and 1997.
In addition, as payment for marketing services, the Partnership will pay 7% of
any additional lease payments generated as a result of Telecommunications'
efforts. There were no payments made in 1995, 1996 and 1997 under this
agreement. See "Information Regarding Telecommunications--Related Party
Transactions."
 
    The Partnership entered into an agreement with the General Partner to manage
the construction of the Houston to Corpus Christi fiber optic network. Under
this agreement, the Partnership paid approximately 4% of the costs of
constructing the network to the General Partner. The Partnership paid management
fees of $285,964 in 1997 and a total of $450,964 under the contract.
 
    OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT OF THE PARTNERSHIP
 
    The following table sets forth certain information regarding the beneficial
ownership of Partnership Interests as of May 31, 1998 (and prior to giving
effect to the Mergers and the Interest Exchange) for the executive officers,
directors and five percent (5%) shareholders of Telecommunications who also hold
 
                                      128
<PAGE>
Partnership Interests in the Partnership. The address of each person listed
below is Two Galleria Tower, 13455 Noel Road, Suite 1925, Dallas, Texas 75240,
except as otherwise indicated.
 
<TABLE>
<CAPTION>
                                                                           INTERESTS
                                                                      BENEFICIALLY OWNED
                                                                     ---------------------
                                                                     INTERESTS    TYPE OF
NAME                                                                   OWNED     INTEREST
- -------------------------------------------------------------------  ----------  ---------
<S>                                                                  <C>         <C>
CapRock Systems, Inc.(1)...........................................     1.72375%   General
 
Mark Langdale(2)...................................................    38.99919%   Limited
  5950 Berkshire, Suite 990
  Dallas, TX 75225
 
Jere W. Thompson, Sr.(3)...........................................    11.14024%   Limited
  Two Turtle Creek Village
  3838 Oak Lawn Avenue, Suite 1850
  Dallas, TX 75219
 
Jere W. Thompson, Jr.(4)...........................................    31.87113%   Limited
 
Greenway Holdings, L.P.(4).........................................    31.87113%   Limited
</TABLE>
 
- ------------------------
 
(1) CapRock Systems, Inc. is a Texas corporation of which Mr. Thompson, Jr. and
    Mr. Langdale each own 50% of the outstanding common stock and is each an
    officer and director.
 
(2) Does not include the 1.7238% general partnership interest held by CapRock
    Systems, Inc. See footnote (1).
 
(3) Represents a 6.55635% interest held by Mr. Thompson, Sr. and a 4.58389%
    interest held by his spouse.
 
(4) Represents a 31.87113% interest held of record by Greenway Holdings, L.P., a
    Texas limited partnership of which Mr. Thompson, Jr. is the general partner.
 
                                      129
<PAGE>
                           INFORMATION REGARDING IWL
 
BUSINESS
 
    IWL's total revenues are derived from the provision of a variety of
services, including telecommunications services, project and other services and
product resales. Telecommunications services include the resale of long distance
telecommunications services, the provision of private leased lines, and the
rental of telecommunications equipment and systems. IWL operates a tandem switch
at its facility in Houston, Texas to provide services as a switch-based long
distance carrier and is currently completing the installation of its Gulf Coast
regional network. Project and other services consist of the installation of
telecommunications system projects and the sale, service and maintenance of
communications systems.
 
    In connection with product resales, IWL serves as the exclusive
manufacturer's representative of Alcatel products to the U.S. oil and gas
industry. In fiscal 1996 and 1997, IWL provided services to a subsidiary of
Shell, which included the resale of a significant amount of Alcatel products.
For the years ended June 30, 1996 and 1997, the Shell subsidiary purchased from
IWL approximately $10.6 million and $7.6 million, respectively, of Alcatel
products and other equipment and hardware, representing approximately 38.0% and
25.2%, respectively, of total sales during such periods. Although profitable,
the sale of Alcatel products to the Shell subsidiary significantly reduced IWL's
gross margin in these periods. The Shell project was substantially completed in
fiscal 1997 and, therefore, is not expected to contribute in a material manner
to IWL's total sales in future periods.
 
    IWL was founded in 1981 as a contract supplier of communications technology
installation and equipment leasing services, and over the ensuing years
broadened the scope of its service offerings to include microwave, two-way radio
and related wireless services and technologies for an expanded customer base,
primarily comprised of major oil and gas companies operating in the Gulf of
Mexico region. During this period, IWL began to provide an increasing variety of
services to its oil and gas customers in other remote and underdeveloped regions
around the world, including communications services for special projects with
critical timing and other extreme or unusual challenges.
 
    To support its international expansion, in 1994 IWL began providing
telecommunications services and network support inside the former Soviet Union
to United States oil and gas customers. On January 22, 1998 to expand its
presence in the North Sea, IWL purchased all of the issued share capital of
Integrated Communications and Engineering Limited, a limited company
incorporated in Scotland ("ICEL") from its three foreign shareholders, and paid
the sum of L230,540.06 or U.S.$377,854 and issued to such shareholders 207,266
shares of IWL Common Stock. As IWL expanded its service offerings and developed
greater infrastructure, it commenced service as a switchless reseller of long
distance services in the United States in 1994. IWL is continuing to expand its
network through its tandem switch and the installation of fiber optic cable and
microwave radios in targeted service areas. In connection with such expansion,
IWL has also received CLEC status in Texas and Louisiana.
 
    While annual growth rates of IWL's total sales since 1992 have ranged from
6.3% to 76.0%, IWL's quarterly operating results have varied significantly in
the past, and can be expected to vary in the future. These fluctuations in
operating results generally are caused by a number of factors, including changes
in IWL's services and product mix, levels of product resales, adverse weather
conditions in customer locations, the degree to which IWL encounters competition
in its existing or target markets, general economic conditions, the volume and
timing of orders received during the period, sales and marketing expenses
related to entering new markets, the timing of new product or service
introductions by IWL or its competitors and changes in billing rates by IWL or
its competitors. IWL's ability to grow its revenues will be dependent upon a
number of factors, many of which are not within its control and as a result no
assurance can be given that such objectives will be met.
 
    In May 1998, IWL changed its fiscal year to a December 31 year end to
coincide with the fiscal years of CapRock, Telecommunications and the
Partnership. Within the time period required under the
 
                                      130
<PAGE>
Exchange Act (as defined below), IWL will file a December 31, 1997 transition
period Form 10-K for the transition period from June 30, 1997 to December 31,
1997.
 
SERVICE OFFERINGS
 
    IWL's service offerings include project management services, offshore
services, Internet services and wireless services.
 
PROJECT MANAGEMENT SERVICES
 
    To provide its customers with total, integrated communications services, IWL
performs many functions, including system specification, project engineering,
integration, equipment procurement, test, installation and maintenance and
network management. IWL's expertise in planning, designing and implementing
communications solutions for customers with operations in remote regions or
underdeveloped areas allows IWL, from time to time, to provide communications
services for special projects with critical-timing requirements or other extreme
and unusual challenges. IWL utilizes satellite, microwave and fiber solutions
for voice and data applications to meet its customers' specifications.
 
OFFSHORE SERVICES
 
    IWL provides offshore voice and data services to the oil and gas industry in
the Gulf of Mexico and the North Sea. Satellite and microwave transmission media
are used depending on the type and location of the drilling rig involved. IWL's
communications systems are flexible and can be quickly readjusted as rigs move
to new locations. IWL's telecom services also provide the connection between
other carriers' networks and a customer's location. Although this connection can
span large distances, it is commonly referred to as last-mile connectivity.
IWL's Offshore Dedicated Digital Services program ("ODDS"), which delivers
connectivity to offshore locations, exemplifies IWL's last-mile connectivity
services in the Gulf of Mexico. ODDS is a fully digital communications system
that is flexible enough to be reconfigured to a new location after the
customer's drilling rig changes locations.
 
INTERNET SERVICE PROVIDER
 
    IWL provides Internet access to retail, commercial and other ISPs in the
Houston area and in Moscow. The services include a mail server, news server, and
hosting of customer web pages. IWL is linked to the Internet backbone via a
direct connection with a global service provider in Houston on dedicated lines.
 
WIRELESS SERVICES
 
    IWL provides two-way radio sales and maintenance services to oil and gas
companies, governmental agencies and petrochemical plants located on the Texas
and Louisiana Gulf Coast through its wireless division. IWL resells a broad line
of two-way and trunking radios, paging products and wireless systems for both
voice and data applications. IWL also engineers and designs new systems and
modifies existing systems to meet its customers' specifications. In addition,
IWL provides complete turnkey design and implementation of conventional and
trunking radio networks, integrates new equipment into existing networks, and
engineers and designs new systems or updates existing systems to meet new FCC
regulations as they are adopted.
 
SALES AND MARKETING
 
    IWL targets domestic and international customers that require turnkey system
solutions and other telecommunications services. IWL's sales force sells
frequency bandwidth and call completion and system solutions, which allows IWL
to further develop its own telecommunications infrastructure. Current and
prospective customers are assigned to account managers, who are principally
responsible for providing
 
                                      131
<PAGE>
high levels of contact and customer service. In addition, IWL utilizes business
development managers to focus on specific customer requirements and
opportunities. The business development manager typically is involved in major
projects and the installation of infrastructure domestically or internationally.
IWL currently has a sales force of approximately 23 sales representatives, with
sales personnel located in Houston, Texas, New Orleans, Louisiana, Moscow,
Russia and Aberdeen, Scotland. IWL's direct sales approach enables it to provide
a high level of customer service. To complement IWL's direct sales efforts, IWL
often participates in various domestic and international industry trade shows
and conducts advertising campaigns in trade publications.
 
CUSTOMER SERVICE
 
    IWL also provides customer support for its project management and offshore
products and services through its full-service support teams in Friendswood,
Texas, Lafayette and New Orleans, Louisiana, Moscow, Russia and Aberdeen,
Scotland. Support services include: (i) on-site maintenance, with over 50
technical specialists on call for immediate dispatch when customers'
communications systems require maintenance; (ii) a network operations center in
Friendswood, Texas where IWL's professionals remotely monitor customers'
communications systems throughout the Gulf of Mexico and around the world seven
days a week, 24 hours a day; (iii) customer support through its wireless
division, (iv) training programs designed to maximize the customers'
communications investment, classroom training at customers' sites and multimedia
video training tools; and (v) research and development for unique applications
where IWL's engineers can custom design or modify hardware to improve its
performance within a particular system.
 
COMPETITION AND GOVERNMENT REGULATION
 
    The telecommunications industry and IWL's provision of communications
services is subject to intense competition and extensive federal and state
regulation. See "Competition" and "Government Regulation. and Licenses"
 
EMPLOYEES
 
    As of March 31, 1998, IWL employed approximately 166 people, including
approximately 23 in sales and marketing, approximately 100 in engineering and
technical services and approximately 43 in management, administration and
finance. None of IWL's employees is represented by a labor union or is subject
to a collective bargaining agreement. IWL believes that its relations with its
employees are good.
 
LICENSES AND CERTIFICATIONS
 
    IWL has owned and maintained a variety of telecommunications infrastructures
and holds many FCC and international licenses to transmit voice and data. FCC
radio licenses issued to IWL allow it to provide land mobile, microwave and
satellite communications services. IWL currently holds approximately 30 FCC
licenses, with approximately 250 frequency pairs, for commercial mobile radio
service. These licenses have varying terms which expire and will require renewal
between July 1998 and March 2002. As licenses come due for renewal, IWL
evaluates the need for such license and elects to either renew the license or
let it expire. For example, the license that will expire in July 1998 is for a
location in Arkansas that is no longer used by IWL and which is not anticipated
to be used in the future. As a result, IWL does not intend to renew it. These
licenses allow IWL to provide two-way wireless radio services along the Texas
and Louisiana Gulf Coast region and offshore to oil and gas-related companies.
Each frequency pair allows two-way transmission and reception. IWL holds five
microwave FCC licenses providing voice and data services along the Texas and
Louisiana Gulf Coast region and offshore to drilling, production and related
companies. IWL holds and operates seven Ku band and two C band fixed earth
stations and holds FCC licenses that allow IWL to locate earth stations in Texas
and other U.S. locations.
 
                                      132
<PAGE>
    IWL operates as a FCC licensed 214 carrier to provide resold switched
telecommunications services. IWL has also obtained broader common carrier
authority from the FCC to provide global resale of switched and private line
services as well as global facilities-based service. IWL currently provides
international facilities-based private line service on a private carrier basis
into Bolivia, Bosnia, Croatia, Ecuador, Hungary and Russia. In 1997, IWL
installed a Class 4 tandem switch and value-added services platform at its
facility in Houston, Texas as part of its new point-of-presence for its IWL
Connect-TM- division. As part of IWL's plans to increase its service offerings,
IWL has obtained authority to provide dedicated services in Louisiana and CLEC
and long distance services in Texas and Louisiana. In addition, IWL has been
approved to have pole attachment rights to existing or future facilities of
Entergy, BellSouth and the State of Louisiana. Pole attachment rights allow IWL
to attach its own fiber optic cable to such parties' respective utility poles.
 
PROPERTIES
 
    IWL occupies buildings that contain approximately 70,000 square feet of
floor space. IWL owns an office building in Friendswood, Texas and Lafayette,
Louisiana and leases additional space in Friendswood and Houston, Texas, New
Orleans, Louisiana, Moscow, Russia and Aberdeen, Scotland under agreements that
expire at various dates through 2004. The principal facilities are located as
follows:
 
<TABLE>
<CAPTION>
                                        APPROXIMATE
LOCATION                                SQUARE FEET                           DESCRIPTION
- -------------------------------------  -------------  ------------------------------------------------------------
<S>                                    <C>            <C>
Houston, Texas (Aerospace)...........       18,940    Corporate headquarters for administration, finance and sales
                                                        functions, and IWL Connect.
 
Friendswood, Texas...................       12,500    Engineering, Research and Development, Network Operations
                                                        Center, Production, and Warehouse.
 
Lafayette, Louisiana.................        8,450    Administration, Sales, Production, Shipping/Receiving, and
                                                        Warehouse.
 
Friendswood, Texas...................        7,000    Administration, Sales, Production and Warehouse.
 
New Orleans, Louisiana...............        6,470    Administration, Sales, Production, Shipping/Receiving, and
                                                        Warehouse.
 
Friendswood, Texas...................        5,000    Procurement, Inventory, Shipping/Receiving and Warehouse.
 
Aberdeen, Scotland...................        4,200    Administrative, Sales, Shipping/Receiving and Warehouse
 
Moscow, Russia.......................        1,800    Administrative and Engineering
</TABLE>
 
    IWL considers its current facilities adequate for its current needs and
believes that suitable additional space will be available, as needed, to
accommodate further physical expansion of corporate operations and for
additional sales and service.
 
LEGAL PROCEEDINGS
 
    IWL is not currently a party to any litigation. However, IWL is from time to
time a party to ordinary litigation incidental to its business, none of which is
expected to have a material adverse effect on the results of operations,
financial position or liquidity of IWL.
 
                                      133
<PAGE>
                        DIRECTORS AND EXECUTIVE OFFICERS
 
    The following table provides certain information regarding the directors and
executive officers of IWL as of June 15, 1998:
 
<TABLE>
<CAPTION>
NAME                                                    AGE                             POSITIONS
- --------------------------------------------------      ---      --------------------------------------------------------
<S>                                                 <C>          <C>
Ignatius W. Leonards..............................          44   Chairman, Chief Executive Officer and Director
Byron M. Allen....................................          50   President and Director
Richard H. Roberson...............................          39   Chief Financial Officer, Secretary and Director
James T. Gordon...................................          59   Vice President-Telecom Operations
J. Keith Johnson..................................          36   Vice President-Marketing
Bryan L. Olivier(1)...............................          36   Vice President-IWL Connect Division
Errol J. Olivier(1)...............................          35   Vice President-Telecom Sales
Christopher J. Amenson............................          48   Director
Myron J. Goins....................................          37   Director
</TABLE>
 
- ------------------------
 
(1) The Oliviers are not related.
 
    Mr. Ignatius W. Leonards has served as Chairman of the Board, Chief
Executive Officer and a director of IWL since founding IWL in 1981 and served as
President from 1981 until February 1997. Mr. Leonards was employed by Bibbins &
Rice Electronics as Telecom Service Manager until 1981. Mr. Leonards has an
industrial electronics degree from the T.H. Harris Technical Institute in
Opelousas, Louisiana.
 
    Mr. Byron M. Allen has served as President and a director of IWL since
February 1997 and served as a Vice President of IWL from December 1993 until
February 1997. From 1986 to 1993, Mr. Allen served as Executive Vice President
of SBS Technologies, Inc., a manufacturer of computer components. Mr. Allen was
a co-founder of SBS Technologies, Inc. In 1985 and 1986, Mr. Allen served as a
senior principal staff member at BDM Corporation, a defense consulting firm. In
1984 and 1985, he served as manager of Navy New Business Development for the
Singer Link Corporation. From 1983 to 1984, Mr. Allen served as the managing
director of European operations of Intermetrics, Inc. He served as manager of
Houston operations of Intermetrics, Inc. from 1977 to 1983. Mr. Allen graduated
from the University of Alabama with a degree in Mathematics. He attended
graduate school at Wright State University in Dayton, Ohio where he studied
systems engineering.
 
    Mr. Richard H. Roberson has served as Chief Financial Officer of IWL since
joining IWL in October 1996 and has served as a director of IWL since February
1997. From November 1995 until October 1996, Mr. Roberson was Director of
Administration at Weaver and Tidwell, LLP., a certified public accounting firm.
From May 1989 until October 1995, Mr. Roberson was Chief Financial Officer and
Controller of Local and Western of Texas, Inc., a wholesaler of meat and other
food products. Mr. Roberson is a certified public accountant and is a member of
the American Institute of Certified Public Accountants and the Texas Society of
Certified Public Accountants. Mr. Roberson has a BBA in Accounting from the
University of Texas at Austin.
 
    Mr. James T. Gordon has served as Vice President-Telecom Operations of IWL
since October 1996. Prior to joining IWL, he was an independent
telecommunications consultant. From September 1992 through December 1994, Mr.
Gordon was Director-Installation and Test Engineering Services for Alcatel
Network Systems, Inc. and, from April 1991 to September 1992, he served as
Manager-Customer Account Services-Independent Operating Cos. for Alcatel Network
Systems, Inc. Mr. Gordon was employed by Rockwell International Corporation in
various capacities from 1970 until 1991. Mr. Gordon received a BBA in Production
Management from the University of North Texas.
 
    Mr. J. Keith Johnson has served as Vice President of Marketing since
December 1992 and was Director of Sales and Marketing of IWL from December 1986
to December 1992. From June 1985 to
 
                                      134
<PAGE>
December 1986, Mr. Johnson was an Account Executive with ARGO Communications,
Inc., a long distance carrier, where he sold long-distance voice and data lines
to medium and large commercial users. Mr. Johnson worked for AT&T from May 1983
until June 1985, where he sold telephone systems to small and medium-sized
companies. Mr. Johnson graduated from Houston Baptist University with a double
major in marketing and management.
 
    Mr. Bryan L. Olivier has served as a Vice President of IWL's IWL Connect-TM-
division since January 1996. Prior thereto, he served as Director of Engineering
for Spacelink Systems, Inc. from May 1992 to December 1995. From January 1992 to
March 1992, he was a member of the strategic planning group of Wiltel
Communications, a long distance carrier. From May 1981 to December 1988, he was
the manager of the International Telecommunications Group of Tenneco Oil
E&P/Operators Inc. Mr. Olivier graduated with a B.S. Degree in Electrical
Engineering from the University of Southwest Louisiana with a concentration in
telecommunications management and from T.H. Harris Technical Institute in
Opelousas, Louisiana in the field of industrial engineering.
 
    Mr. Errol J. Olivier has served as Vice President of Telecom Sales since
September 1996 and served as Vice President of Telecom Services from July 1995
until September 1996. From February 1995 until July 1995, Mr. Olivier served as
Director of Telecom Services and was responsible for the opening of IWL's
Lafayette and New Orleans offices. Mr. Olivier joined IWL in March 1990 and
served as an Account Manager from March 1990 until January 1992 and as the
Regional Manager of IWL's New Orleans office from January 1992 until February
1995. Mr. Olivier has an electronics technology degree from T.H. Harris
Technical Institute in Opelousas, Louisiana.
 
    Mr. Christopher J. Amenson has served as a director of IWL since June 1997.
Mr. Amenson has served as President and Chief Operating Officer of SBS
Technologies, Inc. since April 1992 and as a director since August 1992. In
October 1996, he became the Chief Executive Officer of SBS Technologies, Inc.
For five years prior to joining SBS Technologies, Inc., Mr. Amenson was
President of Industrial Analytics, Inc., a Boston-based investment banking firm.
Mr. Amenson holds a B.A. Degree in Government from the University of Notre Dame
and a Master's Degree in Business Management from the Sloan Fellows Program at
the Massachusetts Institute of Technology.
 
    Mr. Myron J. Goins has served as a director of IWL since June 1997. Mr.
Goins has served as a Managing Director of Seruus Ventures LLC, an investment
firm specializing in telecommunications-related investments, since September
1996. From September 1995 until the founding of Seruus, Mr. Goins was employed
by National Telemanagement Corporation, a diversified telecom company, as its
Chief Financial Officer. From April 1994 until Corporate Telemanagement Group's
sale to LCI International in September of 1995, Mr. Goins was Vice President of
Corporate Development for Corporate Telemanagement Group, a long distance
company. From 1988 to April 1994, Mr. Goins was Director of Financial Analysis
at Sprint, where he was involved in numerous merger and acquisition transactions
including the $3.5 billion merger of Sprint and Centel and various local, long
distance, satellite and other infrastructure investments. Mr. Goins received his
BBA degree from the University of Memphis and his MBA from Vanderbilt
University's Owen Graduate School of Management.
 
    Each director serves until the next annual meeting of shareholders and until
his successor is duly elected and qualified. The IWL Board is currently composed
of five directors. Officers serve at the discretion of the IWL Board. There are
no family relationships among any of the directors or IWL Named Executive
Officers (as defined below).
 
    Pursuant to IWL's By-Laws, the next annual meeting of shareholders of IWL
will be held in 1998.
 
BOARD COMMITTEES
 
    Effective upon the consummation of IWL's initial public offering in June
1997, the IWL Board established two standing committees: the Audit Committee and
the Compensation Committee. The
 
                                      135
<PAGE>
functions of the Audit Committee, of which Mr. Amenson and Mr. Goins are the
initial members, is to make recommendations regarding the engagement of IWL's
independent auditors and to review with management and the independent auditors
IWL's financial statements, basic accounting and financial policies and
practices, audit scope and competency of control personnel. The functions of the
Compensation Committee, of which Mr. Amenson and Mr. Goins are the members, is
to review and recommend to the IWL Board the compensation of executive officers
of IWL and to administer and make awards and take all other action as prescribed
under the employee benefit plans of IWL (other than the 1997 Director Option
Plan, which is administered by the entire IWL Board). All members of the
Compensation Committee are and will continue to be "non-employee directors"
within the meaning of Rule 16b-3(b) promulgated under the Exchange Act and
"outside directors" as contemplated by Section 162(m)(4)(C)(i) of the Code.
 
DIRECTOR COMPENSATION
 
    Non-employee directors of the IWL Board are paid $1,000 per meeting for
attending or participating in meetings of the IWL Board or any committee
thereof, and receive reimbursement for out-of-pocket expenses incurred for
attendance at meetings. Non-employee directors will also receive from time to
time non-statutory stock options under the 1997 Director Option Plan (as defined
below). IWL granted options to acquire 10,000 shares of Common Stock at a per
share exercise price of $6.00 under the 1997 Director Option Plan to each of
Messrs. Amenson and Goins effective upon their commencing to serve as directors
of IWL in June 1997. IWL's policy is not to pay any additional compensation to
employees of IWL for their services as a director.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
    Messrs. Amenson and Goins were the sole members of the Compensation
Committee during the fiscal year ended June 30, 1997. The IWL Board established
the Compensation Committee effective upon consummation of IWL's initial public
offering in June 1997. Prior thereto, IWL had no Compensation Committee or other
committee of the IWL Board performing similar functions, and accordingly, the
IWL Board determined the compensation for the executive officers and related
matters.
 
    During the last fiscal year, no executive officer of IWL served as a member
of the board of directors or compensation committee of any entity that has one
or more executive officers serving as a member of IWL's Board or Compensation
Committee.
 
    Caroline Fontenot, the sister of Mr. Leonards, IWL's Chairman of the Board
and Chief Executive Officer, lent IWL $75,000 on June 1, 1992, of which a
balance of $39,460, bearing interest at the rate of 12% per annum, remained
outstanding as of December 31, 1997 and a balance of $43,693 remained
outstanding as of June 30, 1997.
 
EXECUTIVE COMPENSATION
 
    SUMMARY COMPENSATION TABLE.  The following table sets forth certain
compensation awarded or paid by IWL to its Chairman of the Board and Chief
Executive Officer and the other executive officers of IWL whose total annual
salary and bonus for services to IWL exceeded $100,000 in the fiscal year ended
June 30, 1997 (the "IWL Named Executive Officers").
 
                                      136
<PAGE>
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                                         LONG-TERM
                                                                                       COMPENSATION
                                                         ANNUAL COMPENSATION              AWARDS
                                                   --------------------------------  -----------------    ALL OTHER
NAME AND PRINCIPAL POSITION                          YEARS      SALARY      BONUS    OPTIONS (SHARES)   COMPENSATION
- -------------------------------------------------  ---------  ----------  ---------  -----------------  -------------
<S>                                                <C>        <C>         <C>        <C>                <C>
Ignatius W. Leonards ............................       1997  $  157,427  $  --             --            $  29,254(1)
 Chairman of the Board and Chief Executive              1996     150,000     --                              36,522(2)
 Officer
 
J. Keith Johnson ................................       1997  $  115,485     --              5,000(3)         1,801(4)
 Vice President--Marketing                              1996     100,604     12,250         36,141(5)         1,655(4)
</TABLE>
 
- ------------------------
 
(1) Represents (i) $8,998 earned by Mr. Leonards pursuant to an agreement (the
    "Kenwood Agreement") between IWL and Kenwood Americas Corporation ("KAC")
    whereby Mr. Leonards is paid 10% of the net profits of Kenwood Systems
    Group, Inc. (IWL owns 50% of the outstanding capital stock of Kenwood
    Systems Group, Inc., with the other 50% owned by KAC); (ii) $2,448 of
    matching payments made by IWL to Mr. Leonards' account under IWL's
    Retirement and Savings Plan (the "401(k) Plan"); (iii) $10,500 in management
    fees ($1,500 a month, terminating in January 1997) paid to Mr. Leonards by
    IWL for management rights granted by Mr. Leonards to IWL with respect to a
    condominium owned by Mr. Leonards and used by IWL; and (iv) $7,308 for the
    Company car provided to Mr. Leonards.
 
(2) Represents (i) $9,000 earned by Mr. Leonards pursuant to the Kenwood
    Agreement; (ii) $2,214 of matching payments made by IWL to Mr. Leonards'
    account under IWL's 401(k) Plan; (iii) $18,000 in management fees ($1,500 a
    month for the entire fiscal year) paid to Mr. Leonards by IWL for management
    rights granted by Mr. Leonards to IWL with respect to a condominium owned by
    Mr. Leonards and used by IWL; and (iv) $7,308 for the Company car provided
    to Mr. Leonards.
 
(3) Represents stock options granted pursuant to IWL's 1997 Stock Option Plan,
    which have an exercise price of $6.00 per share and are subject to vesting
    requirements.
 
(4) Represents matching payments made by IWL to Mr. Johnson's account under
    IWL's 401(k) Plan.
 
(5) Represents stock options granted pursuant to IWL's Employee Incentive Stock
    Option Plan, which have an exercise price of $3.56 per share. The vesting of
    all such options was accelerated upon consummation of IWL's initial public
    offering in June 1997.
 
    OPTION GRANTS TABLE.  The following table provides information on grants of
stock options pursuant to the Incentive Stock Option Plan during the fiscal year
ended June 30, 1997 to the IWL Named Executive Officers:
 
                       OPTION GRANTS IN LAST FISCAL YEAR
 
<TABLE>
<CAPTION>
                                                                                                      POTENTIAL REALIZABLE
                                                                                                        VALUE AT ASSUMED
                                                                                                        ANNUAL RATES OF
                                                                                                          STOCK PRICE
                                      NUMBER OF       PERCENT OF TOTAL                                  APPRECIATION FOR
                                     SECURITIES      OPTIONS GRANTED TO    EXERCISE OR                  OPTION TERM (1)
                                     UNDERLYING      EMPLOYEES IN FISCAL   BASE PRICE    EXPIRATION   --------------------
NAME                               OPTIONS GRANTED          YEAR           (PER SHARE)      DATE         5%         10%
- --------------------------------  -----------------  -------------------  -------------  -----------  ---------  ---------
<S>                               <C>                <C>                  <C>            <C>          <C>        <C>
J. Keith Johnson................          5,000(2)              3.6%        $    6.00(3)     5/8/07   $  18,867  $  77,813
</TABLE>
 
- ------------------------
 
(1) The 5% and 10% assumed annual compound rates of stock appreciation are
    mandated by the rules of the Commission and do not represent IWL's estimate
    or projection of future IWL Common Stock prices. The actual value realized
    may be greater or less than the potential realizable value set forth in the
    table.
 
                                      137
<PAGE>
(2) These options were granted to Mr. Johnson in May 1997 pursuant to IWL's 1997
    Stock Option Plan and vest in five installments of 20% each and become fully
    vested five years after due date of grant.
 
(3) These options were granted at a price per share of $6.00, which was equal to
    the initial public offering price of IWL's Common Stock in its initial
    public offering and, accordingly, was at least equal to the fair market
    value of the IWL Common Stock on the date of grant, as determined by the IWL
    Board.
 
                      FISCAL YEAR-END OPTION VALUES TABLE
 
<TABLE>
<CAPTION>
                                                                NUMBER OF SECURITIES         VALUE OF UNEXERCISED
                                                               UNDERLYING UNEXERCISED        IN-THE-MONEY OPTIONS
                                                             OPTIONS AT FISCAL YEAR-END     AT FISCAL YEAR-END(1)
                                                            ----------------------------  --------------------------
NAME                                                        EXERCISABLE   UNEXERCISABLE   EXERCISABLE  UNEXERCISABLE
- ----------------------------------------------------------  -----------  ---------------  -----------  -------------
<S>                                                         <C>          <C>              <C>          <C>
J. Keith Johnson..........................................      36,141(2)        5,000     $ 341,171    $    35,000
</TABLE>
 
- ------------------------
 
(1) Based on the fair market value of the IWL Common Stock of $13.00 per share
    as reported on the Nasdaq National Market on December 31, 1997.
 
(2) The IWL Board accelerated the vesting of all outstanding options granted
    under the Employee Incentive Stock Option Plan effective upon completion of
    IWL's initial public offering in June 1997.
 
                            INCENTIVE BONUS PROGRAM
 
    The bonuses available to the executive officers are based upon the
subjective evaluation of the performance of each individual and are not
contingent on the achievement of any specific performance targets. Such bonuses
are designed to maximize the shareholder value.
 
                           RELATED PARTY TRANSACTIONS
 
    Since the beginning of IWL's 1994 fiscal year, IWL has entered into the
various transaction with officers, directors and affiliates of IWL described
below.
 
    Byron M. Allen, IWL's President and a director, loaned IWL $150,000 in
September 1994, which loan is evidenced by a promissory note payable to Mr.
Allen bearing interest at the rate of 10% per annum. During the fiscal year
ending June 30, 1995, Mr. Allen loaned IWL an additional $100,000 evidenced by
another promissory note payable to Mr. Allen bearing interest at the rate of 2%
per annum in excess of Mr. Allen's cost of funds in his margin account at his
brokerage firm. The full amount of such notes, together with interest thereon,
was repaid by IWL in December 1995.
 
    Caroline Fontenot, the sister of Mr. Leonards, IWL's Chairman of the Board
and Chief Executive Officer, loaned IWL $75,000 on June 1, 1992, of which a
balance of $39,460, bearing interest at the rate of 12% per annum, remained
outstanding as of December 31, 1997 and a balance of $43,693 remained
outstanding as of June 30, 1997.
 
    IWL paid to Mr. Leonards during fiscal year 1996 and fiscal year 1997,
$18,000 and $10,500, respectively, in management fees ($1,500 a month) for
management rights granted by Mr. Leonards to IWL with respect to a condominium
owned by Mr. Leonards and used by IWL. Such fees were equal to $1,500 a month
and terminated in January 1997.
 
     SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT OF IWL
 
    The following table sets forth certain information regarding the beneficial
ownership of IWL's Common Stock as of May 31, 1998 by (i) each person who is
known by IWL to own beneficially more than five percent (5%) of IWL Common
Stock, (ii) each of IWL's Named Executive Officers, directors and director
nominees, and (iii) all of the current executive officers and directors of IWL
as a group. The information contained in this table with respect to beneficial
ownership reflects "beneficial ownership" as defined in Rule 13d-3 under the
Exchange Act which means generally any person who, directly or
 
                                      138
<PAGE>
indirectly, has or shares voting power or investment power with respect to a
security. Shares of IWL Common Stock not outstanding but deemed beneficially
owned by virtue of the right of an individual or group to acquire shares within
60 days after May 31, 1998 are treated as outstanding only when determining the
amount and percentage of IWL Common Stock owned by such individual or group. All
information with respect to the beneficial ownership of any principal
shareholder was supplied in a Schedule 13D or 13G filed with the Commission by
or on behalf of such principal shareholder under the Exchange Act and/or was
furnished by such principal shareholder and Holdings believes that, except as
otherwise noted or pursuant to community property laws, each shareholder has
sole voting and sole investment power with respect to the shares shown. The
address of each person listed is 12000 Aerospace Avenue, Suite 200, Houston,
Texas 77034, except as otherwise indicated.
 
<TABLE>
<CAPTION>
                                                                                            SHARES OF COMMON STOCK
                                                                                             BENEFICIALLY OWNED(1)
                                                                                           -------------------------
                                                                                           NUMBER OF    PERCENTAGE
NAME                                                                                         SHARES      OWNERSHIP
- -----------------------------------------------------------------------------------------  ----------  -------------
<S>                                                                                        <C>         <C>
Ignatius W. Leonards(2)..................................................................   1,897,528         47.6%
Byron M. Allen(3)........................................................................     222,200          5.6%
J. Keith Johnson(4)......................................................................      37,949        *
Richard H. Roberson(5)...................................................................       3,400        *
Christopher J. Amenson...................................................................       2,000        *
  c/o SBS Technologies, Inc.
  2400 Louisiana Boulevard, NE
  AFC Building 5, Suite 600
  Albuquerque, New Mexico 87110
Myron J. Goins...........................................................................      --           --
  200 North Main Street, Suite 301
  Greenville, South Carolina 29601
Wellington Management Company, LLP(6)....................................................     360,000          9.0%
  75 State Street
  Boston, MA 02109
All executive officers and directors as a group (nine persons)(7)........................   2,250,203         54.8%
                                                                                           ----------          ---
</TABLE>
 
- ------------------------
*   Less than 1% of the outstanding shares of the class.
 
(1) Based upon 3,986,718 shares of IWL Common Stock issued and outstanding.
 
(2) Includes 6,666 shares held by Ignatius W. Leonards as custodian for minor
    children.
 
(3) Includes 7,300 shares held by Byron M. Allen as custodian for minor children
    and 7,300 shares held by Mr. Allen's daughters, the voting, investment and
    dispositive power of which are shared by Mr. Allen with his daughters.
 
(4) Includes 36,141 shares of IWL Common Stock subject to currently exercisable
    options and 1,000 shares of IWL Common Stock subject to options exercisable
    within 60 days of May 31, 1998. Does not include 4,000 shares of IWL Common
    Stock subject to options not yet vested.
 
(5) Includes 100 shares of IWL Common Stock held by spouse of Richard H.
    Roberson and 200 shares of IWL Common Stock held by Richard H. Roberson as
    custodian for minor children, the voting, investment and dispositive power
    of which are shared by Mr. Roberson with his spouse. Includes 3,000 shares
    of IWL Common Stock subject to options exercisable within 60 days of May 31,
    1998. Does not include 27,000 shares of IWL Common Stock subject to options
    not yet vested.
 
(6) Address and current ownership information obtained from review of Commission
    Form 13G filed by Wellington Management Company, LLP on February 9, 1998.
 
(7) Includes 102,807 shares of IWL Common Stock subject to currently exercisable
    options, and 20,200 shares of IWL Common Stock subject to options
    exercisable within 60 days of May 31, 1998, granted to the executive
    officers of IWL, as a group.
 
                                      139
<PAGE>
                                  COMPETITION
 
    OVERVIEW.  The communications services industry is highly competitive,
rapidly evolving and subject to constant technological change. In particular,
there are numerous companies offering long distance and local services, and
Holdings expects competition to increase in the future. Holdings believes that
existing competitors are likely to continue to expand their service offerings to
appeal to existing or potential customers of Holdings. Many of Holdings'
existing customers have financial, personnel and other resources, including
brand name recognition, substantially greater than that of Holdings. Moreover,
Holdings expects that new competitors are likely to enter the communications
market, and some of these new competitors may market communications services
similar to Holdings' services. Some of these new competitors may have financial,
personnel and other resources, including brand name recognition, substantially
greater than that of Holdings.
 
    In addition, the regulatory environment in which Holdings operates is
undergoing significant change. As this regulatory environment evolves, changes
may occur which could create greater or unique competitive advantages for all or
some of Holdings' current or potential competitors, or could make it easier for
additional parties to provide services. Other providers currently offer one or
more of each of the services offered by Holdings and, many communications
companies operate generally in the same long distance and local services
submarkets as Holdings. As a service provider in the long distance
communications industry, Holdings competes with several well established
providers, as well as many other long distance providers with less significant
market shares.
 
    DOMESTIC AND INTERNATIONAL LONG DISTANCE.  Holdings provides long distance
services using its own facilities and by reselling the facilities of other
carriers in the United States and between the United States and other countries.
The long distance communications industry is intensely competitive and
significantly influenced by the marketing and pricing decisions of the larger
industry participants such as AT&T, MCI, Sprint and WorldCom. Moreover, the
industry is undergoing significant consolidation that has created and will
continue to create numerous other entities with substantial resources to compete
for long distance business, such as Excel Communications, Inc., Frontier
Communications Service, Inc. and Qwest. In addition, as a result of the 1996
Telecommunications Act, RBOCs and GTOCs are able or will be able in the future
to enter the long distance market. These larger competitors have significantly
greater name recognition, financial, technical, network and marketing resources.
They may also offer a broader portfolio of services and have longer standing
relationships with customers targeted by Holdings. Moreover, there can be no
assurance that certain of Holdings's competitors will not be better situated to
negotiate contracts with suppliers of telecommunications services which are more
favorable than contracts negotiated by Holdings. Many of Holdings' competitors
enjoy economies of scale that can result in a lower cost structure for
transmission and related terminating costs, which could cause significant
pricing pressures on Holdings.
 
    Holdings competes in the long distance market primarily on the basis of
price, customer service and the ability to provide a variety of communications
products and services. Customers frequently change long distance providers in
response to the offering of lower rates or promotional incentives by
competitors. Prices for domestic and international long distance calls have
declined in recent years and are likely to continue to decrease. Competition in
all of the relevant markets is expected to increase which could adversely affect
net revenue per minute and gross margins as a percentage of net revenue. There
can be no assurance that Holdings will be able to compete effectively in the
domestic or international long distance markets.
 
    LOCAL EXCHANGE SERVICE.  Holdings seeks to expand significantly its
operations to provide LEC services typically provided by ILECs. The local
service market has only recently been opened broadly to new service providers
following enactment of the 1996 Telecommunications Act. The services intended to
be offered by Holdings will compete with those offered by ILECs, such as
BellSouth, Southwestern Bell and the GTOCs, as well as very large IXCs, such as
AT&T, MCI, Sprint and WorldCom. The ILECs currently dominate the provision of
local services in their respective markets, and the ILECs and IXCs
 
                                      140
<PAGE>
have greater name recognition, financial, technical, network, marketing and
personnel resources, as well as longer standing relationships with regulatory
authorities at the federal and state levels than the new entrants. Moreover,
there can be no assurance that certain of Holdings' competitors will not be
better situated to negotiate contracts with suppliers of telecommunications
services which are more favorable than contracts negotiated by Holdings.
Holdings also may face competition from other current and potential market
entrants, including other CLECs, cable companies, electric utilities, LECs
operating outside their current local service areas, other long distance
carriers, wireless telephone system owners, microwave owners, satellite
carriers, private networks built by large companies, and start-up
telecommunications ventures. There can be no assurance that Holdings will be
able to compete effectively in the local service markets.
 
    FIBER NETWORKS
 
    Holdings intends to expand the fiber optic network to approximately 4,300
route miles throughout Texas and the Gulf Coast region. Holdings will compete
with numerous established and start-up national and regional fiber optic
networks owned by IXCs, ILECs and CLECs throughout Texas and the Gulf Coast
region. These competitors include very large companies such as AT&T, MCI,
WorldCom, Sprint, IXC and Qwest, each of whom has greater name recognition,
financial, personnel, technical and marketing resources than Holdings. Holdings
is aware that other facilities-based providers of local and long distance
telecommunications services are planning and constructing fiber networks and/or
purchasing or leasing dark fiber in order to build additional networks that, if
and when completed, could compete with Holdings' network. In addition to IXCs
and LECs, entities potentially capable of offering broadband services in
competition with Holdings' existing and planned network include other
facilities-based communications service providers, cable television companies,
electric utilities, microwave carriers, satellite carriers, wireless telephone
system operators and large companies who build private networks. Such competing
networks may also have advanced fiber and operating capabilities similar to
those of Holdings' existing and planned network and may be positioned
geographically to compete directly with Holdings' existing and planned network
for many of the same customers along a significant portion of the same routes.
 
    INTERNET SERVICE PROVIDER AND INTERNET TELEPHONY
 
    IWL is an ISP and Holdings plans to introduce Internet Telephony in late
1998. Internet services are currently deemed enhanced services by the FCC and
therefore are not subject to federal and state common carrier regulations,
including long distance interstate and intra-state access fees. Certain ISPs
have recently announced plans to use IP Telephony to introduce domestic and
international long distance services at rates 30% to 50% below standard long
distance rates. Although the FCC intends to review this issue, IP Telephony
could increase pressure on IXCs and other communications companies to reduce
prices and margins from domestic and international long distance services. There
can be no assurance that Holdings or the carrier customers of Holdings will not
experience substantial decreases in call volume, pricing and/or margins due to
IP Telephony. There can also be no assurance that Holdings will be able to offer
its telecommunications services to end users at a price which is competitive
with the IP Telephony services offered by these new companies, or that Internet
services will not be subject to additional regulation in the future, although
Holdings seeks to compete by introducing IP Telephony in late 1998. The Internet
services market is highly competitive, although there are no substantial
barriers to entry, and Holdings expects that competition will continue to
intensify. Holdings's competitors in this market include ISPs, other
telecommunications companies, online services providers and Internet software
providers. Many of these competitors have greater financial, technological and
marketing resources than those available to Holdings.
 
    TECHNOLOGICAL ADVANCES
 
    In the future, Holdings may be subject to intense competition due to the
development of new technologies resulting in an increased supply of domestic and
international transmission capacity. The
 
                                      141
<PAGE>
telecommunications industry is experiencing a period of rapid and significant
technological evolution, marked by the introduction of new product and service
offerings and increasing satellite transmission capacity for services similar to
those to be provided by Holdings. For instance, recent advances in wave division
multiplexing technology permit substantial increases in transmission capacity of
both new and older fiber. The introduction of new products or emergence of new
technologies may cause capacity to greatly exceed the demand, reducing the
pricing of certain services to be provided by Holdings. There can be no
assurance that Holdings' services will satisfy future customer needs, that
Holdings' technologies will not become obsolete in light of future technological
developments, or that Holdings will not have to make significant additional
capital investments to upgrade or replace its system and equipment. The effect
on Holdings's operations of technological changes cannot be predicted and if
Holdings is unable to keep pace with advances, it could have a material adverse
effect on the financial condition, results of operations and cash flow of
Holdings.
 
    OFFSHORE AND REMOTE AND TELECOMMUNICATIONS SERVICES
 
    Currently, Holdings provides telecommunications services to oil and gas
customers in the Gulf of Mexico, the North sea and other oil and gas producing
regions around the world. In the Gulf of Mexico, Holdings competes directly with
Autocomm Communications Engineering Corp., Sola Communications, Inc., Datacom,
Shell, as well as cellular carriers such as Petrocom and Coastel, and with Data
Marine Systems and EAE Ltd. in the North Sea. Shell currently provides competing
services through its microwave network in the Gulf of Mexico and has announced
plans to become a full service telecommunications provider to the oil and gas
industry in the region. Holdings provides private-line telecommunications
services in Russia. In Russia, the major competitors for networks are SOVAMTEL
and AMRUSCOM. Although Holdings believes that it competes successfully in each
of its markets today, there can be no assurance that Holdings will be able to
continue to compete successfully in the future. Holdings believes that most of
its larger competitors have generally not made it a priority to provide remote,
difficult-access telecommunications services. Should one or more of the
competitors decide to focus on such services, it could have a material adverse
effect on the financial condition, results of operations and cash flow of
Holdings.
 
                                      142
<PAGE>
                            REGULATION AND LICENSES
 
GOVERNMENT REGULATION
 
    THE FOLLOWING SUMMARY OF REGULATORY DEVELOPMENTS AND LEGISLATION DOES NOT
PURPORT TO DESCRIBE ALL PRESENT AND PROPOSED FEDERAL, STATE AND LOCAL
REGULATIONS AND LEGISLATION AFFECTING THE TELECOMMUNICATIONS INDUSTRY. OTHER
EXISTING FEDERAL, STATE AND LOCAL LEGISLATION AND REGULATIONS ARE CURRENTLY THE
SUBJECT OF JUDICIAL PROCEEDINGS, LEGISLATIVE HEARINGS, AND ADMINISTRATIVE
PROPOSALS WHICH COULD CHANGE, IN VARYING DEGREES, THE MANNER IN WHICH THIS
INDUSTRY OPERATES. NEITHER THE OUTCOME OF THESE PROCEEDINGS, NOR THEIR IMPACT
UPON THE TELECOMMUNICATIONS INDUSTRY OR HOLDINGS, CAN BE PREDICTED AT THIS TIME.
THIS SECTION ALSO SETS FORTH A BRIEF DESCRIPTION OF REGULATORY AND TARIFF ISSUES
PERTAINING TO THE OPERATION OF HOLDINGS.
 
    Holdings provides domestic and international services that are subject to
varying degrees of U.S. federal, state and local regulation. In the United
States, the provision of telecommunications services is subject to the 1934
Communications Act, as amended, including as amended by the 1996 Telecommunica-
tions Act and the regulations thereunder promulgated by the FCC, as well as the
applicable laws and regulations of the various states and state regulatory
commissions. The FCC exercises jurisdiction under Title II of the 1934
Communications Act over all facilities of, and services offered by,
telecommunications common carriers to the extent such services involve
jurisdictionally interstate communications, including international
communications, while state regulatory authorities retain jurisdiction over
jurisdictionally intrastate communications. Under Title III of the 1934
Communications Act, the FCC is also charged with regulating the licensing and
use of the radio frequency spectrum. Local governments sometimes impose
franchise or licensing requirements on local service competitors and/or
facilities companies. Services provided in other countries are subject to the
telecommunications laws and regulations of those countries.
 
    Holdings is subject to the authority of the FCC and the state regulatory
agencies to enforce applicable regulatory requirements. The FCC and the state
regulatory agencies may address regulatory non-compliance with a variety of
enforcement mechanisms, including monetary forfeitures, refund orders,
injunctive relief, license conditions, and/or license revocation.
 
    The regulation of the telecommunications industry is changing rapidly and
the regulatory environment varies substantially from state to state. Moreover,
as deregulation at the federal level occurs, some states are reassessing the
level and scope of regulation that may be applicable to carriers. There can be
no assurance that future regulatory, judicial or legislative activities will not
have a material adverse effect on the financial condition, results of operations
or cash flow of Holdings or that domestic or international regulators or third
parties will not raise material issues with regard to compliance or
non-compliance with applicable regulations.
 
    U.S. FEDERAL REGULATION
 
    LOCAL SERVICE REGULATION UNDER THE 1996 TELECOMMUNICATIONS ACT.  The 1934
Communications Act was substantially amended by the 1996 Telecommunications Act,
which provides for comprehensive reform of the United States' telecommunications
laws. The 1996 Telecommunications Act may have potentially significant effects
on the financial condition, results of operations or cash flow of Holdings. The
1996 Telecommunications Act is designed to enhance competition in, among other
markets, the local telecommunications marketplace by, among other things: (i)
removing state and local entry barriers, (ii) requiring ILECs to provide
interconnection to their facilities, (iii) facilitating the end users' choice to
switch service providers from ILECs to CLECs, and (iv) requiring access to
rights-of-way. The legislation also is designed to increase local competition by
newer competitors such as long distance carriers, cable companies and public
utility companies. Under the 1996 Telecommunications Act, RBOCs have the
opportunity to provide out of region long distance services immediately and in
region long distance services if certain conditions are met and are no longer
prohibited (in most instances) from providing certain cable TV services. Entry
of such companies into the domestic and international long distance business and
the
 
                                      143
<PAGE>
emergence of other new local competitors could result in substantial competition
to CapRock and may have a material adverse effect on the financial condition,
results of operations or cash flow of CapRock.
 
    The 1996 Telecommunications Act specifically requires all LECs (including
ILECs and CLECs): (i) not to prohibit or unduly restrict resale of their
services; (ii) to provide dialing parity, number portability and
nondiscriminatory access to telephone numbers, operator services, directory
assistance and directory listings; (iii) to afford access to poles, ducts,
conduits and rights-of-way; and (iv) to establish reciprocal compensation
arrangements for the transport and termination of telecommunications. ILECs are
specifically required to provide interconnection on certain terms and
conditions, as well as unbundled network elements, resold local services at
wholesale rates, reasonable public notice of any changes in the information
needed for transmission and routing services over their communications
facilities and physical collocation of equipment necessary for interconnection
and access to unbundled network elements at the LECs' premises. An RBOC can
enter the market for in-region long distance services within the area where it
provides local exchange service upon FCC approval based on a showing that
facilities-based competition is present and that interconnection agreements
meeting a 14-point checklist are in place in the states to be entered. RBOCs are
permitted to enter the out of region long distance market immediately upon
enactment. The provision of inter-LATA services by RBOCs is expected to reduce
the market share of major IXCs, and consequently, may have an adverse effect on
the ability of CLECs to generate access revenues from the IXCs.
 
    On August 8, 1996, the FCC released the Interconnection Decision, which
established a framework of minimum, national rules enabling state commissions
and the FCC to begin implementing many of the local competition provisions of
the 1996 Telecommunications Act. Among other things, the Interconnection
Decision prescribed certain minimum points of interconnection, adopted a minimum
list of unbundled network elements that ILECs must make available to
competitors, and adopted a methodology for states to use when setting wholesale
prices for retail services. The U.S. Court of Appeals for the Eighth Circuit
issued a decision vacating certain portions of the Interconnection Decision and
the United States Supreme Court has agreed to consider the challenges to the
Eighth Circuit Court's decision filed by the FCC and interested carriers.
Whether the Eighth Circuit decisions will stand, or what further actions the FCC
may or may not take in response to these appellate decisions cannot be
predicted.
 
    In a separate case, on December 31, 1997, the U.S. District Court for the
Northern District of Texas ruled that Sections 271 to 275 of the 1996
Telecommunications Act, which establish the conditions the RBOCs must satisfy
before they may provide in-region long distance telecommunications services, are
unconstitutional (the "SBC Decision"). The SBC Decision has been stayed and is
being reviewed by higher courts, and could ultimately be reviewed by the Supreme
Court. The outcome of that review cannot be predicted. If, however, the SBC
Decision were upheld on appeal it would likely have an unfavorable effect on the
ability of new entrants to compete because the SBC Decision removes the
incentive for RBOCs to open their local markets to competition.
 
    DOMESTIC INTERSTATE SERVICES.  Domestic interstate common carriers without
market power, such as Holdings, are deemed nondominant and are subject to
minimal FCC regulation. Interstate carriers offering services to the public must
comply with the federal statutory and regulatory requirements of common carriage
under the 1934 Communications Act. Among other things, interstate common
carriers must offer service on a non-discriminatory basis at just and reasonable
rates. Nondominant carriers are exempt from the requirement to obtain specific
prior FCC approval to initiate or expand domestic interstate services, although
they are required to file a tariff at the FCC and remain subject to the FCC's
complaint jurisdiction. The FCC has issued an order eliminating the requirement
that nondominant carriers maintain tariffs for their domestic interstate
services on file at the FCC. The FCC order has been appealed to the U.S. Court
of Appeals for the District of Columbia and stayed pending resolution of the
appeal. If the FCC order becomes effective, nondominant interexchange carriers
will need to find new means of providing notice to customers of prices, terms
and conditions on which they offer their interstate services. Elimination of
tariffs will require that Holdings secure with each of its customers contractual
 
                                      144
<PAGE>
agreements containing the terms of the services offered. To the extent that
disputes arise over such contacts, carriers such as Holdings may no longer
resort to the legal doctrine that the terms of a filed tariff supersede
individual contract language.
 
    INTERNATIONAL SERVICE REGULATION.  Holdings is a nondominant international
carrier and must comply with the federal statutory and regulatory requirements
of common carriage under the 1934 Communications Act. International common
carriers are required to obtain authority under Section 214 of the 1934
Communications Act and to file a tariff containing the rates, terms, and
conditions applicable to their services prior to initiating their international
telecommunications services. Holdings holds global authority from the FCC to
provide resale of switched services and to provide private line (where permitted
by the FCC) and facilities-based services. Holdings maintains an international
tariff on file with the FCC. International telecommunications service providers
are also required to file copies of their contracts with other carriers,
including foreign carrier agreements, and a variety of reports regarding their
international revenue, traffic flows and use of international facilities.
Carriers holding Section 214 authority are also subject to FCC rules requiring,
among other things, prior approval for transfers of control and assignments.
 
    Authorized international carriers are subject to the FCC's international
service regulations, including the International Settlements Policy ("ISPY")
that governs the payment settlements between U.S. common carriers and their
foreign correspondents for terminating traffic over each other's networks, the
accounting rates for such settlement and permissible deviations from these
policies. The FCC recently enacted certain changes in its rules designed to
permit alternative arrangements outside of its ISPY as a means of encouraging
competition and lower, cost-based accounting rates. As a part of implementing
the ISPY, the FCC maintains a private line resale policy that prohibits carriers
from reselling international private leased circuits to provide switched
services to or from a country unless the FCC has found that the country affords
U.S. carriers equivalent resale opportunities to engage in similar activities in
that country. The FCC recently revised this and other policies to accommodate
the 1997 WTO Agreement on basic services, a compact that addresses market
access, foreign investment, and procompetitive regulatory principles in areas
currently generating a vast majority of the world's telecommunications revenue.
Currently, the FCC's rules permit U.S. carriers to provide switched service over
international leased lines or facilities-based private lines between the U.S.
and WTO countries where the local telecommunications provider generally charges
U.S. carriers at or below an FCC-determined rate for terminating the U.S.
carriers' traffic or equivalent resale opportunities are available.
 
    The FCC has adopted measures intended to overhaul the system of
international settlements by, among other things, establishing lower ceilings
("Benchmarks") for the rates that U.S. carriers will pay foreign carriers for
the termination of international services. Several parties have sought
reconsideration and/or filed appeals of the FCC's benchmark decision. While
these rule changes may provide carriers with more flexibility to respond more
rapidly to changes in the global telecommunications market, they will also
likely increase the level of competition in the international telecommunications
marketplace.
 
    WIRELESS SERVICES.  Holdings owns and maintains a variety of
telecommunications infrastructures and holds various FCC and international
licenses to transmit voice and data. Holdings currently holds numerous FCC
licenses to provide land mobile, microwave and satellite communications
services. Holdings holds approximately 35 FCC licenses, with approximately 300
frequency pairs for business radio service. These licenses allow Holdings to
provide two-way wireless radio services along the Texas and Louisiana Gulf Coast
region and offshore to oil and gas-related companies. Each frequency pair allows
two way transmission and reception. Holdings holds approximately 20 microwave
licenses providing voice and data services along the Texas and Louisiana Gulf
Coast region and offshore to drilling, production and related companies. IWL
holds and operates a network of fixed earth stations and Very Small Aperture
Terminal ("VSAT") networks, which include seven KU band and two C band fixed
earth station authorizations.
 
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    Facilities licensed by the FCC to provide microwave, satellite earth station
and land mobile service are subject, under Title III of the 1934 Communications
Act, to a variety of detailed licensing, operational and technical requirements
specific to each service. Among other requirements, licensees seeking to
continue operating beyond the expiration date of the licenses must renew their
authority. FCC rules also impose prior approval requirements on proposed
transfers of control or license assignments. The FCC continues to refine its
wireless rules for each service area to accommodate advances in technology,
developing markets and new service arrangements, to implement certain provisions
of the 1996 Telecommunications Act, and to eliminate confusing, outdated,
redundant or otherwise burdensome regulation. Opportunities to obtain new common
carrier wireless licenses are often limited by the FCC's auction process under
which wireless licenses are assigned to the highest bidder.
 
    The 1934 Communications Act generally limits direct foreign ownership of
wireless licenses to 20%, but provides for indirect foreign ownership holdings
above 25% upon FCC approval. In its order implementing the U.S. commitment under
the WTO Agreement, the FCC established new rules that effectively relax the
foreign ownership limits for common carrier wireless licenses. Specifically, the
new rules allow for up to 100% indirect ownership of wireless licenses by
foreign interests from countries that have participated in the WTO Agreement
upon FCC review and approval.
 
    ACCESS CHARGES.  The cost of providing long distance and local exchange
services will be affected by changes in the "access charge" rates imposed by
ILECs on long-distance carriers for origination and termination of calls over
local facilities. On May 8, 1997, the FCC released an order intended to reform
its system of interstate access charges to make that regime compatible with the
pro-competitive deregulatory framework of the 1996 Telecommunications Act.
Access service is the use of local exchange facilities for the origination and
termination of interexchange communications. The FCC's recent access reform
order adopts various changes to its policies governing interstate access service
pricing designed to move access charges, over time, to more economically
efficient levels and rate structures. Among other things, the FCC modified rate
structures for certain non-traffic sensitive access rate elements, moving some
costs from a per-minute-of-use basis to flat-rate recovery, including one new
flat rate element; changed its structure for interstate transport services; and
affirmed that ISPs may not be assessed interstate access charges. In response to
claims that existing access charge levels are excessive, the FCC stated that it
would rely on market forces first to drive prices for interstate access to
levels that would be achieved through competition but that a "prescriptive"
approach, specifying the nature and timing of changes to existing access rate
levels, might be adopted in the absence of competition. The FCC has indicated
that it will promulgate additional rules sometime in 1998 that may grant
increased pricing flexibility to price cap LECs (i.e., the RBOCs, GTE and
certain independents that are permitted flexibility to establish rates at or
below a designated price ceiling and are no longer regulated based on cost of
service) upon demonstrations of increased competition (or potential competition)
in relevant markets.
 
    UNIVERSAL SERVICE CHARGES.  In 1997, the FCC released an order establishing
a significantly expanded federal universal service subsidy regime to be funded
by interstate carriers and certain other entities. The FCC established new
universal service funds to support telecommunications and information services
provided to qualifying schools, libraries and rural health care providers, and
expanded the federal subsidies for local telephone services provided to
low-income consumers. In accordance with the 1996 Telecommunications Act, the
FCC adopted plans to implement the recommendations of a Federal-State Joint
Board to preserve universal service, including a definition of services to be
supported, and defining carriers eligible for contributing to and receiving from
universal service subsidies. The FCC plans to revise its rules for subsidizing
service provided to consumers in high cost areas, which may result in further
substantial increases in the overall cost of the subsidy program. The FCC issued
a public notice in April 1998 seeking comment on proposals to revise the
methodology for determining universal service support. In a recent report to
Congress, the FCC clarified that transmission services supplied to ISPs are
revenue subject to the contribution. The FCC plans to address in the future the
contribution obligations, if any, of ISPs using their own facilities and ISPs
providing phone-to-phone IP telephony. The outcome of these proceedings or
 
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their effect on the companies, cannot be predicted. Several parties have
appealed the FCC's order and those appeals are pending before the Fifth Circuit
Court of Appeals. The outcome of the further FCC proceedings or of the pending
judicial appeals or petitions for FCC reconsideration on its operations cannot
be predicted.
 
    INTERNET SERVICES.  Federal and state regulations generally treat ISPs as
"enhanced service providers" and exempt from federal and state common carrier
regulations. Accordingly, Internet access services are exempt from tariffing,
certification and rate regulation. In December 1996, the FCC initiated a Notice
of Inquiry regarding whether to impose regulations or surcharges upon providers
of Internet access and Information Services (the "Internet NOI"). The Internet
NOI sought public comment upon whether to impose or continue to forebear from
regulation of Internet and other packet-switched network service providers and
specifically identifies Internet telephony as a subject for FCC consideration.
Additionally, regulations governing disclosure of confidential communications,
copyright, excise tax, and other requirements may apply to the provision of
Internet access services. The extent to which federal and state regulatory
authorities will impose additional regulation on Internet service providers
cannot be predicted.
 
    The Eighth Circuit is currently considering the issue of whether the FCC has
a reasonable basis for not requiring Internet service providers to pay access
charges. The FCC is expected to address this issue in future rule making
proceedings. In June 1997, every RBOC advised CLECs that they did not consider
calls in the same local calling area from their customers to CLEC customers, who
are ISPs, to be local calls under the interconnection agreements between the
RBOCs and the CLECs. The RBOCs claimed, however, that the FCC exempted these
calls from access charges so that no compensation is owed to the CLECs for
transporting and terminating such calls. As a result, the RBOCs threatened to
withhold, and in many cases did withhold, reciprocal compensation for the
transport and termination of such calls. To date, numerous state commissions
have ruled on this issue in the context of state commission arbitration
proceedings or enforcement proceedings. In every state, to date, the state
commission has determined that reciprocal compensation is owed for such calls
although in at least one state, such a decision has been stayed. Several of
these cases are presently on appeal. The outcome of these appeals, or of
additional pending cases, cannot be predicted.
 
    STATE REGULATION
 
    Most states require a certification or other authorization to offer local
exchange and long distance intrastate services. These certifications generally
require a showing that the carrier has adequate financial, managerial and
technical resources to offer the proposed services in a manner consistent with
the public interest. In addition to tariff requirements, most states require
that common carriers charge just and reasonable rates and not discriminate among
similarly situated customers. Some states also require the filing of periodic
reports, the payment of various regulatory fees and surcharges, and compliance
with service standards and consumer protection rules. States also often require
prior approvals or notifications for certain transfers of assets, customers, or
ownership. States generally retain the right to sanction a carrier or to revoke
certifications if a carrier violates relevant laws and/or regulations. If any
state regulatory agency were to conclude that Holdings is or was providing
intrastate service without the appropriate authority, the agency could initiate
enforcement actions, which could include the imposition of fines, the disgorging
of revenues, or the refusal to grant the regulatory authority necessary for the
future provision of intrastate telecommunications services. Holdings holds
authority to provide interexchange and competitive local exchange services in
certain service areas in Arkansas, Kansas, Louisiana, Oklahoma and Texas, and
has had its application for interexchange authority granted or is permitted to
offer interexchange service on a deregulated basis in at least 35 states.
 
    In addition, carriers are subject to the outcome of proceedings held by
state utility commissions to determine state regulatory policies with respect to
ILEC and CLEC competition, geographic build-out, mandatory de-tariffing and
other matters. Certain states have adopted specific universal service funding
obligations. Proceedings to adopt state universal service funding obligations
rules are also pending or
 
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contemplated in numerous other states. State commissions generally have
authority to impose sanctions on carriers ranging from fines to license
revocation to address non-compliance with the states' particular regulatory
policies and requirements.
 
    State regulatory agencies also regulate access charges and other pricing for
telecommunications services within each state. The RBOCs and other LECs have
been seeking reduction of state regulatory requirements, including greater
pricing flexibility. If regulations are changed to allow variable pricing of
access charges based on volume Holdings could be placed at a competitive
disadvantage over larger long distance carriers. Holdings also could face
increased price competition from the RBOCs and other LECs for local and long
distance services, which competition may be increased by the removal of former
restrictions on long distance service offerings by the RBOCs as a result of the
1996 Telecommunications Act. The impact of such rule changes on Holdings cannot
be predicted.
 
    LOCAL GOVERNMENT AUTHORIZATIONS
 
    Holdings may own telecommunications facilities that may be subject to
certain local government requirements. In particular, facilities companies must
obtain street use and construction permits and licenses and/or franchises to
install and expand fiber optic networks using municipal rights of way.
Termination of the existing franchise or license agreements prior to their
expiration dates or failure to renew such agreements and any resulting
requirement to remove facilities could have a material adverse effect on
Holdings' financial condition, results of operations and cash flow. In some
municipalities carriers must pay license or franchise fees based on a percentage
of gross revenues or on a per linear foot basis, as well as post performance
bonds or letters of credit. There can be no assurance that following expiration
of existing franchises, fees will remain at their current levels.
 
    FOREIGN REGULATION
 
    International telecommunications providers are subject to varying degrees of
regulation in each of the jurisdictions in which they provide services. Local
laws and regulations, and the interpretation of such laws and regulations,
differ significantly from country to country. To the extent that Holdings
provides, now or in the future, services in non-U.S. countries, it will be
subject to the laws and regulations of foreign countries. The nature and extent
of telecommunications regulation varies significantly from country to country
and may include requirements that reflect closed or limited market access and/or
requirements Holdings may also face to obtain initial licensing, operational and
rate requirements in the relevant countries.
 
LICENSES
 
    Holdings has had its application for state certification granted or is
authorized, by virtue of state certification, tariff, registration, or on a
deregulated basis, to provide resold long distance services in at least 35
states. In order to provide its wireless mobile services, Holdings owns various
radio systems that provide two-way voice communications and has obtained
approximately 35 FCC licenses with approximately 300 frequency pairs. These
licenses have varying terms which expire and will require renewal between July
1998 and August 2002. As each license comes due for renewal, Holdings will
evaluate the need for such license and elect to either renew the license or let
it expire. For example, the license that will expire in July 1998 is for a
location in Arkansas that is no longer used by Holdings and which is not
anticipated to be used in the future. As a result, Holdings does not intend to
renew it. These licenses allow Holdings to provide two-way wireless radio
services along the Texas and Louisiana Gulf Coast region and offshore to oil and
gas-related companies. Each frequency pair allows two-way transmission and
reception. Holdings holds approximately 20 microwave FCC licenses providing
voice and data services along the Texas and Louisiana Gulf Coast region and
offshore to drilling, production and related companies. Holdings holds and
operates seven Ku band and two C band fixed earth stations and holds FCC
licenses that allow Holdings to locate VSAT earth stations in Texas and other
U.S. locations.
 
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    Holdings operates as a FCC certificated section 214 carrier to provide
resold switched telecommunications services. Holdings has also obtained broader
common carrier authority from the FCC to provide global resale of switched and
private line services as well as global facilities-based service. Holdings
currently provides international facilities-based private line service on a
private carrier basis into Bolivia, Bosnia, Croatia, Ecuador, Hungary and
Russia. As part of Holdings' plans to increase its service offerings, Holdings
has obtained authority to provide dedicated services in Louisiana and CLEC and
long distance services in Arkansas, Kansas, Louisiana, Oklahoma and Texas. In
addition, Holdings has been approved to have pole attachment rights to existing
or future facilities of Entergy, BellSouth and the State of Louisiana. Pole
attachment rights allow Holdings to attach its own fiber optic cable to such
parties' respective utility poles. In addition, Holdings' installed fiber optic
cable is laid under various public and private rights-of-ways.
 
                              THE SPECIAL MEETINGS
 
GENERAL
 
    IWL.  This Joint Proxy Statement/Prospectus is being furnished to holders of
IWL Common Stock in connection with the solicitation of proxies by the IWL Board
for use at the IWL Special Meeting to consider and vote upon the approval and
adoption of the Merger Agreement and the approval of the Plan Proposals and to
transact such other business as may properly come before the IWL Special
Meeting.
 
    THE IWL BOARD HAS UNANIMOUSLY APPROVED THE MERGER AGREEMENT AND RATIFIED THE
PLAN PROPOSALS AND UNANIMOUSLY RECOMMENDS THAT THE HOLDERS OF IWL COMMON STOCK
VOTE FOR THE APPROVAL AND ADOPTION OF THE MERGER AGREEMENT AND FOR THE APPROVAL
OF THE PLAN PROPOSALS.
 
    TELECOMMUNICATIONS.  This Joint Proxy Statement/Prospectus is being
furnished to holders of Telecommunications Common Stock in connection with the
solicitation of proxies by the Telecommunications Board for use at the
Telecommunications Special Meeting to consider and vote upon the approval and
adoption of the Merger Agreement and the approval of the Plan Proposals and to
transact such other business as may properly come before the Telecommunications
Special Meeting.
 
    THE TELECOMMUNICATIONS BOARD HAS UNANIMOUSLY APPROVED THE MERGER AGREEMENT
AND RATIFIED THE PLAN PROPOSALS AND UNANIMOUSLY RECOMMENDS THAT THE HOLDERS OF
TELECOMMUNICATIONS COMMON STOCK VOTE FOR THE APPROVAL AND ADOPTION OF THE MERGER
AGREEMENT AND FOR APPROVAL OF THE PLAN PROPOSALS.
 
RECORD DATES
 
    IWL.  The IWL Board has fixed the close of business on             , 1998 as
the IWL Record Date for the determination of the holders of IWL Common Stock
entitled to receive notice of, and to vote at, the IWL Special Meeting.
 
    TELECOMMUNICATIONS.  The Telecommunications Board has fixed the close of
business on             , 1998 as the Telecommunications Record Date for the
determination of the holders of Telecommunications Common Stock entitled to
receive notice of, and to vote at, the Telecommunications Special Meeting.
 
TIMES AND PLACES; PURPOSES
 
    IWL.  The IWL Special Meeting will be held at             on             ,
1998, starting at     a.m. local time. At the IWL Special Meeting, the holders
of IWL Common Stock will be asked to consider and vote upon (i) the Merger
Agreement, (ii) the Plan Proposals and (iii) such other matters as may properly
come before the IWL Special Meeting.
 
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    TELECOMMUNICATIONS.  The Telecommunications Special Meeting will be held at
            on             , 1998, starting at     a.m. local time. At the
Telecommunications Special Meeting, the holders of Telecommunications Common
Stock will be asked to consider and vote upon (i) the Merger Agreement, (ii) the
Plan Proposals and (iii) such other matters as may properly come before the
Telecommunications Special Meeting.
 
VOTING RIGHTS; VOTES REQUIRED FOR APPROVAL
 
    IWL.  Only holders of record of shares of IWL Common Stock on the IWL Record
Date are entitled to notice of, and to vote at, the IWL Special Meeting. On the
IWL Record Date, there were approximately         shares of IWL Common Stock
outstanding and entitled to vote at the IWL Special Meeting held by
approximately         shareholders of record.
 
    Each holder of record of IWL Common Stock, as of the IWL Record Date, is
entitled to cast one vote per share. The presence, in person or by proxy, of the
holders of a majority of the outstanding shares of IWL Common Stock entitled to
vote is necessary to constitute a quorum at the IWL Special Meeting. Under the
TCBA and pursuant to IWL's Articles of Incorporation, the affirmative vote, in
person or by proxy, of the holders of a majority of the shares of IWL Common
Stock outstanding and entitled to vote is required to approve and adopt the
Merger Agreement. The affirmative vote of a majority of the votes cast by the
holders of IWL Common Stock at the IWL Special Meeting at which a quorum is
present is required to approve all other action proposed, including the Plan
Proposals, except that the affirmative vote of the holders of a majority of the
IWL Common Stock represented in person or by proxy at the IWL Special Meeting is
required to approve an adjournment of the IWL Special Meeting at which a quorum
is not present. The Merger Agreement and the Plan Proposals must also be
approved by the shareholders of Telecommunications as described below.
 
    As of the IWL Record Date, Ignatius W. Leonards, the Chief Executive Officer
and Chairman of the Board of IWL, beneficially owned 1,897,528 shares of IWL
Common Stock, which represented approximately 47.6% of the outstanding shares of
IWL Common Stock as of such date. As of the IWL Record Date, Byron M. Allen,
President and a director of IWL, beneficially owned 222,200 shares of IWL Common
Stock, which represented approximately 5.6% of the outstanding shares of IWL
Common Stock as of such date. Messrs. Leonards and Allen entered into the IWL
Shareholders Agreement with Telecommunications and the Partnership pursuant to
which they have agreed to vote all of their respective shares of IWL Common
Stock in favor of the approval of the Merger Agreement, subject to the
conditions set forth in the IWL Shareholders Agreement. If the conditions set
forth in the IWL Shareholders Agreement are satisfied, approval of the Merger
Agreement by the holders of IWL Common Stock is assured. See "The
Transaction--Interests of Certain Persons in the Transaction--IWL Shareholders
Agreement."
 
    TELECOMMUNICATIONS.  Only holders of record of shares of Telecommunications
Common Stock on the Telecommunications Record Date are entitled to notice of and
to vote at the Telecommunications Special Meeting. On the Telecommunications
Record Date, there were approximately 10,398,954 shares of Telecommunications
Common Stock outstanding and entitled to vote at the Telecommunications Special
Meeting held by five shareholders of record.
 
    Each holder of record of Telecommunications Common Stock, as of the
Telecommunications Record Date, is entitled to cast one vote per share. The
presence, in person or by proxy, of the holders of a majority of the outstanding
shares of Telecommunications Common Stock entitled to vote is necessary to
constitute a quorum at the Telecommunications Special Meeting. Under the TBCA
and pursuant to the provisions of Telecommunications' Articles of Incorporation,
the affirmative vote, in person or by proxy, of the holders of at least
two-thirds of the shares of Telecommunications Common Stock outstanding on the
Telecommunications Record Date and entitled to vote is required to approve and
adopt the Merger Agreement. The affirmative vote of a majority of the shares of
Telecommunications Common Stock represented at the Telecommunications Special
Meeting at which a quorum is present is required to
 
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approve all other action proposed, including the Plan Proposals, except that the
affirmative vote of the holders of a majority of the Telecommunications Common
Stock represented in person or by proxy at the Telecommunications Special
Meeting is required to approve an adjournment of the Telecommunications Special
Meeting at which a quorum is not present. The Merger Agreement and the Plan
Proposals must also be approved by the shareholders of IWL as described above.
 
    As of the Telecommunications Record Date, CapRock Investors, a Texas joint
venture owned 23.5% by Jere W. Thompson, Jr., the President and a director of
Telecommunications, 42.5% by Mark Langdale, a director of Telecommunications,
and 30.9% by Jere W. Thompson, Sr., a director of Telecommunications, owned
4,835,514 shares of Telecommunications Common Stock, which represent 46.5% of
the outstanding shares of Telecommunications Common Stock as of such date. As of
the Telecommunications Record Date, each of Scott L. Roberts, Timothy W. Rogers
and Timothy M. Terrell, each of whom is an Executive Vice President of
Telecommunications, owned 1,611,838 shares of Telecommunications Common Stock,
which represented in the aggregate 46.5% of the outstanding shares of
Telecommunications Common Stock as of such date. CapRock Investors and Messrs.
Roberts, Rogers and Terrell entered into the CapRock Owners Agreement with IWL
pursuant to which they have agreed to vote all of their respective shares of
Telecommunications Common Stock in favor of the approval of the Merger
Agreement, subject to the conditions set forth in the CapRock Owners Agreement.
If the conditions set forth in the CapRock Owners Agreement are satisfied,
approval of the Merger Agreement by the holders of Telecommunications Common
Stock is assured. See "The Transaction--Interests of Certain Persons in the
Transaction-- CapRock Owners Agreement."
 
PROXIES
 
    All shares of IWL Common Stock and Telecommunications Common Stock
represented by properly executed proxies received prior to or at the IWL Special
Meeting or Telecommunications Special Meeting, respectively, and not
subsequently revoked will be voted in accordance with the instructions indicated
on such proxies. If no instructions are indicated on a properly executed and
returned proxy, such proxy will be voted FOR the approval of the Merger
Agreement and FOR the approval of the Plan Proposals. A properly executed proxy
marked "ABSTAIN," although counted for purposes of determining whether there is
a quorum and for purposes of determining the aggregate voting power and number
of shares represented and entitled to vote at the applicable Special Meeting,
will not be voted. Accordingly, as the affirmative vote of a majority of the
outstanding shares is required for the approval of the Merger Agreement, a proxy
marked "ABSTAIN" will have the effect of a vote against the proposal.
 
    A broker non-vote occurs when an agent holding shares for a beneficial owner
does not vote on a particular proposal because the agent does not have
discretionary voting power with respect to that proposal and has not received
instructions from the beneficial owner. In accordance with Nasdaq National
Market rules, brokers and nominees are precluded from exercising their voting
discretion with respect to the approval and adoption of the Merger Agreement and
approval of the Plan Proposals and, therefore, absent specific instructions from
the beneficial owner of such shares, are not empowered to vote such shares with
respect to such proposals. Shares represented by broker non-votes will be
counted for purposes of determining whether there is a quorum at the applicable
Special Meeting, but will not be counted for purposes of determining the number
of shares entitled to vote with respect to a particular proposal for which
authorization to vote was withheld. With respect to the Merger Agreement,
however, since the affirmative vote of a majority or two-thirds, as the case may
be, of the outstanding shares is required for approval of the Merger Agreement,
a broker non-vote with respect to such proposal will have the effect of a vote
against such proposal. For other matters to come before a meeting, broker
non-votes have the practical effect of reducing the number of affirmative votes
required to achieve the requisite vote for such proposal by reducing the total
number of shares of common stock from which the requisite vote is calculated.
Accordingly, broker non-votes with respect to a proposal will not be considered
shares entitled to vote and, therefore, will not be counted as votes for or
against such proposal in determining whether such proposal is approved.
 
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    The IWL Board and the Telecommunications Board are not currently aware of
any business to be acted upon at their respective Special Meetings other than as
described herein. If, however, other matters are properly brought before either
Special Meeting, or any adjournments or postponements thereof, the persons
appointed as proxies will have discretion to vote or act thereon according to
their best judgment. Such adjournment may be for the purpose of soliciting
additional proxies. Shares represented by proxies voting against the approval
and adoption of the Merger Agreement or against the approval of the Plan
Proposals will be voted against a proposal to adjourn the respective Special
Meeting for the purpose of soliciting additional proxies with respect to such
matter.
 
    Holders of IWL Common Stock and holders of Telecommunications Common Stock
will not be entitled to present any matter for consideration at either of the
Special Meetings.
 
    A holder of IWL Common Stock or a holder of Telecommunications Common Stock
may revoke his or her proxy at any time prior to the voting of the proxy by
delivering to the Secretary of IWL or Telecommunications, as the case may be, a
signed notice of revocation or a later dated signed proxy or by attending the
applicable Special Meeting and voting in person. Attendance at the IWL Special
Meeting or the Telecommunications Special Meeting will not itself constitute the
revocation of a proxy.
 
    The cost of solicitation of proxies will be paid by IWL for IWL proxies and
by Telecommunications for Telecommunications proxies. In addition to
solicitation by mail, arrangements may be made with brokerage houses and other
custodians, nominees and fiduciaries to send proxy material to beneficial
owners, and IWL or Telecommunications, as the case may be, will, upon request,
reimburse them for their reasonable expenses in so doing.
 
    HOLDERS OF IWL COMMON STOCK AND HOLDERS OF TELECOMMUNICATIONS COMMON STOCK
SHOULD NOT SEND IN ANY STOCK OR SHARE CERTIFICATES WITH THEIR PROXY CARDS. A
TRANSMITTAL FORM WITH INSTRUCTIONS FOR THE SURRENDER OF CERTIFICATES FOR IWL
COMMON STOCK AND TELECOMMUNICATIONS STOCK WILL BE MAILED BY IWL AND
TELECOMMUNICATIONS TO THEIR RESPECTIVE HOLDERS OF COMMON STOCK AS SOON AS
PRACTICABLE AFTER THE CONSUMMATION OF THE TRANSACTION. SEE "THE
TRANSACTION--APPRAISAL RIGHTS."
 
                              THE MERGER AGREEMENT
 
GENERAL
 
    The Merger Agreement contemplates the Mergers of I-Sub and C-Sub, two wholly
owned subsidiaries of Holdings, with and into IWL and Telecommunications,
respectively, with IWL and Telecommunications surviving the Mergers as wholly
owned subsidiaries of Holdings, and upon the consummation of the IWL Mergers,
but before the consummation of the Telecommunications Merger, the Interest
Exchange of the Partnership Interests for shares of Holdings Common Stock,
resulting in the Partnership becoming an indirect subsidiary of Holdings (with
Telecommunications becoming a substitute general partner of the Partnership in
respect to the general Partnership Interest transferred to Holdings and then to
Telecommunications and Holdings becoming a substitute limited partner of the
Partnership in respect of the limited Partnership Interests transferred to it).
The Mergers will become effective by filing Articles of Merger with the
Secretary of State of the State of Texas. It is anticipated that such filings
will be made immediately on the closing under the Merger Agreement. The Merger
Agreement obligates Holdings to use its best efforts to obtain listing of the
Holdings Common Stock on the Nasdaq National Market upon the official notice of
issuance and obtaining such listing approval is a condition to the consummation
of the Mergers. The following description of the Merger Agreement is qualified
by reference to the complete text of the Merger Agreement, which is incorporated
by reference herein and attached hereto as Appendix I. Capitalized terms used in
the description of the Merger Agreement that are defined in the Merger Agreement
and not otherwise defined are used herein as defined in the Merger Agreement.
 
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CONSIDERATION TO BE RECEIVED IN THE MERGERS
 
    IWL MERGER.  At the Effective Time, (a) each outstanding share of IWL Common
Stock (excluding those held in the treasury of IWL) and all rights in respect
thereof will be converted into one share of Holdings Common Stock and (b) each
outstanding share of IWL Common Stock held in the treasury of IWL will be
canceled and cease to exist.
 
    TELECOMMUNICATIONS MERGER.  At the Effective Time, (a) each outstanding
share of Telecommunications Common Stock (excluding those held in the treasury
of Telecommunications and any Dissenter's Shares) and all rights in respect
thereof will be converted into 1.789030878 shares of Holdings Common Stock and
(b) each outstanding share of Telecommunications Common Stock held in the
treasury of Telecommunications will be canceled and cease to exist.
 
    INTEREST EXCHANGE.  Prior to the Effective Time, the holders of each issued
and outstanding one percent (1%) Partnership Interest and all rights in respect
thereof will be offered the opportunity to participate in the Exchange Offer and
tender such Partnership Interests to Holdings in exchange for 63,194.54 shares
of Holdings Common Stock.
 
    EXCHANGE OF SHARES.  Subject to the terms and conditions of the Merger
Agreement, at or prior to the Effective Time, Holdings will appoint an exchange
agent (the "Exchange Agent") to effect the exchange of IWL Common Stock,
Telecommunications Common Stock and Partnership Interests for Holdings Common
Stock. Holdings will upon the Effective Time deposit certificates representing
shares of Holdings Common Stock with the Exchange Agent for conversion of IWL
Common Stock and Telecommunications Common Stock and exchange of Partnership
Interests. Commencing immediately after the Effective Time, holders of IWL
Common Stock or Telecommunications Common Stock may surrender their certificates
to the Exchange Agent (or, if at the time of such surrender there is no Exchange
Agent, to Holdings directly). In exchange for such share certificates, holders
will receive Holdings Common Stock certificates representing such number of
shares as described under "--Consideration to be Received in the Mergers."
Holders of unexchanged certificates that, prior to the Effective Time,
represented shares of IWL Common Stock or Telecommunications Common Stock will
not be entitled to receive any dividends or other distributions payable by
Holdings until their certificates are surrendered. Upon surrender, however,
subject to applicable laws, such holders will receive accumulated dividends and
distributions, without interest.
 
    In order to validly tender Partnership Interests pursuant to the Exchange
Offer, each tendering holder of Partnership Interests will need to execute and
deliver to Holdings a Contribution Agreement in respect of such holder's
Partnership Interest. By executing and delivering a Contribution Agreement, the
holder of a Partnership Interest, among other things, (a) tenders the
Partnership Interest in the Exchange Offer; (b) consents to and approves the
Merger Agreement; (c) approves the Plan Proposals; (d) consents to all of the
transfers of Partnership Interests in the Interest Exchange, including the
transfer of the general Partnership Interest first to Holdings, then to C-Sub
and finally to Telecommunications; (e) consents to the substitution of Holdings
as a limited partner in the Partnership in respect of the transferred limited
Partnership Interests and the substitution of Telecommunications as a substitute
general partner in respect of the transferred general Partnership Interest; (f)
waives any right to purchase any of the Partnership Interests transferred to
Holdings in the Interest Exchange or to C-Sub and/or Telecommunications
following the Interest Exchange; and (g) consents to the continuation of the
business of the Partnership to the extent any of the actions described above
would dissolve the Partnership. See "Interest Exchange-- Representations,
Approvals, Appointments, Waivers and Covenants."
 
    No fractional shares of Holdings Common Stock will be issued. Each holder of
shares of Telecommunications Common Stock and each holder of Partnership
Interests who would otherwise be entitled to a fraction of a share of Holdings
Common Stock (after aggregating all fractional shares of Holdings Common Stock
to be received by such holder) shall be entitled to receive a whole share of
Holdings Common Stock.
 
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DISSENTER'S RIGHTS
 
    Holders of shares of Telecommunications Common Stock have dissenter's rights
under Articles 5.11 through 5.13 of the TBCA. Any shares of capital stock of
Telecommunications with respect to which the holder thereof ("Dissenter")
ultimately receives payment pursuant to Articles 5.11 through 5.13 of the TBCA,
will not be converted into Holdings Common Stock pursuant to the Agreement, but
the holder thereof will only be entitled to such rights as are granted by the
TBCA. Pursuant to Article 5.11.B of the TBCA, holders of IWL Common Stock will
not have dissenters' rights. See "The Transaction--Appraisal Rights."
 
    If, after the Effective Time a Dissenter loses the right to receive payment
pursuant to Articles 5.11 through 5.13 of the TBCA, then such holder's shares
will automatically be converted into and represent only the Holdings Common
Stock into which such shares would have been converted under the Merger
Agreement if there had been no dissent, effective as of the Effective Time. Upon
surrender of the certificate representing such shares, without prejudice to any
corporate proceedings which may have been taken during the interim period
between the Effective Time and the occurrence of such event, such shareholder
will be entitled to receive any dividends or other distributions made to
shareholders during such interim period. See "The Transaction--Appraisal
Rights."
 
TREATMENT OF STOCK OPTIONS
 
    At the Effective Time, (a) each outstanding and unexercised option to
purchase shares of IWL Common Stock or Telecommunications Common Stock (an
"Option") will be assumed by Holdings and converted into an option to purchase
shares of Holdings Common Stock. The number of shares of Holdings Common Stock
to be subject to the Holdings Option into which an Option is converted (a
"Converted Option") shall be equal to the product of (x) the number of shares of
IWL Common Stock or Telecommunications Common Stock subject to the Option that
is converted immediately prior to the Effective Time and (y) the IWL Exchange
Ratio or the Telecommunications Exchange Ratio, as applicable, each rounded down
to the nearest whole share. The exercise price per share of Holdings Common
Stock for each particular Holdings Option shall be equal to (x) if such Holdings
Option resulted from a Converted Option to acquire IWL Common Stock, the
exercise price per share under the Converted Option, or (y) if such Holdings
Option resulted from a Converted Option to acquire Telecommunications Common
Stock, (1) the exercise price per share under the Converted Option divided by
(2) the Telecommunications Exchange Ratio, each of which shall be rounded up to
the nearest whole cent.
 
    For a further discussion of the treatment of IWL and Telecommunications
stock options and other employee benefit plans for each of IWL,
Telecommunications and the Partnership under the Merger Agreement, see "The
Merger Agreement--Treatment of Stock Options" and "The Transaction--Interests of
Certain Persons in the Transaction." For a description of Holdings Common Stock,
see "Description of Holdings Capital Stock Common Stock."
 
HOLDINGS FOLLOWING THE MERGER
 
    BOARD.  The Merger Agreement provides that following the consummation of the
Mergers, Holdings shall use commercially reasonable efforts to cause the Board
of Directors of Holdings to consist of Ignatius W. Leonards, Byron M. Allen,
Jere W. Thompson, Jr., Mark Langdale, Timothy W. Rogers, one outside director
designated by IWL (who will initially be Christopher J. Amenson) and one outside
director designated by the Telecommunications (who will initially be John R.
Harris) (provided that IWL and the Telecommunications shall each have the right
to veto the other's designee). See "Directors and Management of
Holdings--Directors."
 
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CERTAIN CONDITIONS
 
    CONDITIONS OF EACH PARTY'S OBLIGATION TO EFFECT THE MERGERS.  In addition to
approval by shareholders of IWL and Telecommunications and the partners of the
Partnership, the obligation of each party to the Merger Agreement to consummate
the Mergers and the Interest Exchange is subject to the following conditions:
(a) no federal, state or foreign statute, rule, regulation, executive order,
decree or injunction shall have been enacted, entered, promulgated or enforced
by any court or governmental authority which makes the Mergers or the Interest
Exchange illegal or otherwise prohibits their consummation, (b) all material
authorizations, consents, orders and approvals of, or declarations and filings
with, and all expirations of waiting periods imposed by the Federal
Communications Commission ("FCC"), the state pubic utility commissions or other
authority which governs the provision of telecommunications services in the
states of Texas, Louisiana, Arkansas and Oklahoma, (c) the Registration
Statement, of which this Joint Proxy Statement/Prospectus forms a part, shall
have become effective prior to mailing by IWL, Telecommunications and the
Partnership of this Joint Proxy Statement/Prospectus to their respective
shareholders and Partners and no stop order suspending the effectiveness of the
Registration Statement, of which this Joint Proxy Statement/Prospectus forms a
part, shall be then threatened, initiated or in effect, (d) all required state
securities and blue sky permits or approvals shall have been received, and (e)
the Holdings Common Stock shall have been duly approved for listing on the
Nasdaq National Market.
 
    ADDITIONAL CONDITIONS TO THE OBLIGATIONS OF IWL AND THE MERGER
SUBSIDIARIES.  The obligations of IWL, I-Sub and C-Sub (I-Sub and C-Sub being
referred to collectively as the "Merger Subsidiaries") to effect the
transactions contemplated by the Merger Agreement are further subject to all of
the following conditions, among others: (a) the representations and warranties
of Telecommunications and the Partnership contained in the Merger Agreement
shall be true and correct as of the Effective Time with the same effect as
though made on and as of such time (except to the extent such representations
and warranties speak as of an earlier date); (b) Telecommunications and the
Partnership shall have performed or complied in all material respects with all
covenants, obligations and conditions required to be performed and complied with
as of the Effective Time; (c) Telecommunications and the Partnership shall have
obtained certain required third-party consents with respect to the transactions;
(d) IWL and the Merger Subsidiaries and Telecommunications and the Partnership
shall have received certain legal opinions with respect to corporate, regulatory
and tax matters; (e) there shall not have occurred any event, fact or condition
which has had or reasonably would be expected to have a Material Adverse Effect
on Holdings, Telecommunications, the Partnership or the surviving corporations
since the date of the Merger Agreement; (f) the General Partner and the holders
of at least 80% of the limited Partnership Interests shall have executed and
delivered to Holdings and not withdrawn a Contribution Agreement in respect of
such partner's Partnership Interests; and (g) IWL shall have received a letter
from KPMG Peat Marwick, LLP to the effect that the Mergers and the Interest
Exchange qualify for "pooling of interests" accounting treatment under
Accounting Principles Board Opinion No. 16 if consummated in accordance with the
Merger Agreement. -
 
    ADDITIONAL CONDITIONS TO THE OBLIGATIONS OF TELECOMMUNICATIONS AND THE
PARTNERSHIP.  The obligations of Telecommunications and the Partnership to
effect the transactions contemplated by the Merger Agreement are further subject
to all of the following conditions, among others: (a) the representations and
warranties of IWL and the Merger Subsidiaries contained in the Merger Agreement
shall be true and correct as of the Effective Time with the same effect as
though made as of such time (except to the extent such representations and
warranties speak as of an earlier date); (b) IWL and the Merger Subsidiaries
shall have performed or compiled in all material respects with all covenants,
obligations and conditions required to be performed and complied with as of the
Effective Time; (c) Telecommunications and the Partnership and IWL and the
Merger Subsidiaries shall have received certain legal opinions with respect to
corporate, regulatory and tax matters; (d) there shall not have occurred any
event that has had or could reasonably be expected to have a Material Adverse
Effect on IWL; (e) each of Telecommunications and the Partnership shall have
received a letter from KPMG Peat Marwick, LLP to the effect that the Mergers
 
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<PAGE>
and the Interest Exchange qualify for "pooling of interests " accounting
treatment under Accounting Principles Board Opinion No. 16 if consummated in
accordance with the Merger Agreement.
 
    "Material Adverse Effect," as defined in the Merger Agreement, means any
change in or effect on the business of the referenced corporation or any of its
subsidiaries that is or will be materially adverse to the business, operations
(including the income statement), properties (including intangible properties),
condition (financial or otherwise), assets, liabilities or regulatory status of
such referenced corporation and its subsidiaries taken as a whole, but shall not
include the effects of changes that are generally applicable in (A) the United
States economy or (B) the United States securities markets if, in either of (A)
or (B), the effect on IWL, Telecommunications or the Partnership (as the case
may be) and its respective Subsidiaries, taken as a whole, is not
disproportionate relative to the effect on the other and its Subsidiaries, taken
as a whole. The parties to the Merger Agreement have agreed that the increase or
decrease in the price of the shares of IWL Common Stock as reported on the
NASDAQ National Market System shall be deemed to not have a Material Adverse
Effect on any of the parties to the Merger Agreement. The parties have further
agreed that the modification made to the IWL Exchange Ratio, the Company
Exchange Ratio and the Interest Exchange Consideration address and take into
account all changes of which they are aware to the business of IWL since the
execution of the Merger Agreement including, but not limited to, IWL's failure
to meet earnings or income projections or models.
 
CERTAIN REPRESENTATIONS AND WARRANTIES
 
    The Merger Agreement contains certain representations and warranties of IWL,
Telecommunications and the Partnership as to, among other things, due
organization and good standing, authorized capital stock, authorized Partnership
Interests, ownership of subsidiaries, corporate or partnership authority to
enter into the contemplated transactions, recent filings with the Commission (if
applicable), financial statements, ownership of and title to assets and
properties, material contracts, tax matters, regulatory matters, information
supplied for use in this Registration Statement and Joint Proxy
Statement/Prospectus, the absence of certain undisclosed liabilities, the
absence of material changes or events, compliance with laws, agreements,
contracts or commitments with third parties, ownership of personal property,
litigation, employee benefit plans, intellectual property, labor matters and
environmental matters.
 
CERTAIN COVENANTS
 
    The Merger Agreement provides that from the date thereof to the Effective
Time, except as otherwise permitted by the Merger Agreement, Telecommunications
and the Partnership will each conduct its business in the ordinary course
consistent with past practices. By way of illustration and without limiting the
foregoing, the Merger Agreement places restrictions on the ability of
Telecommunications and the Partnership to, among other things, (a) enter into
any commitment or transaction involving more than $500,000 of products and
services of Telecommunications and the Partnership; (b) grant any severance or
termination pay in excess of $10,000; (c) transfer intellectual property rights,
subject to certain exceptions; (d) enter into, amend or terminate or assign any
agreements pursuant to which any other party is granted exclusive marketing or
other rights with respect to any products of Telecommunications or the
Partnership; (e) violate or amend any contracts or agreements required to be set
forth in the disclosure schedule to the Merger Agreement; (f) subject to certain
exceptions, commence any litigation except for normal collection actions; (g)
declare or pay dividends, make distributions with respect to Telecommunications
stock, or split, combine or reclassify Telecommunications' stock or issue
securities; (h) issue or sell shares, unless pursuant to an employee stock
option granted prior to the execution of the Merger Agreement; (i) amend
Telecommunications' Articles of Incorporation or Bylaws or the Partnership's
Agreement of Limited Partnership except as provided in the Articles of Merger;
(j) acquire assets of any entity or dispose of any assets which are material to
the business of the Telecommunications or the Partnership; (k) incur
indebtedness; (l) adopt or amend employee compensation and severance benefits;
(m) revalue any of its assets, other than in the ordinary course of business;
(n) pay more than $25,000 in any one case (or
 
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<PAGE>
$100,000 in the aggregate) of any obligation except in the ordinary course of
business or liabilities reflected or reserved against in certain of
Telecommunications' or the Partnership's financial statements; (o) change any
material election or any accounting method in respect of Taxes; or (p) take any
action which would jeopardize the ability of the business combination to be
effected by the Mergers and the Interest Exchange from being accounted for as a
pooling of interests.
 
    The Merger Agreement also requires IWL, except as otherwise permitted by the
Merger Agreement, to conduct its business in the ordinary course consistent with
past practices and places restrictions on the ability of IWL to (a) enter into
any commitment or transaction involving more than $500,000 of products and
services of IWL; (b) grant any severance or termination pay in excess of
$10,000; (c) transfer intellectual property rights, subject to certain
exceptions; (d) enter into, amend or terminate or assign any agreements pursuant
to which any other party is granted exclusive marketing or other rights with
respect to any products of IWL; (e) violate or amend any contracts or agreements
required to be set forth in the disclosure schedule to the Merger Agreement; (f)
subject to certain exceptions, commence any litigation except for normal
collection actions; (g) declare or pay dividends, make distributions with
respect to IWL stock, or split, combine or reclassify IWL's stock or issue
securities; (h) issue or sell shares, unless pursuant to an employee stock
option granted prior to the execution of the Merger Agreement; (i) amend IWL's
Articles of Incorporation or Bylaws except as provided in the Articles of
Merger; (j) acquire assets of any entity or dispose of any assets which are
material to the business of IWL; (k) incur indebtedness; (l) adopt or amend
employee compensation and severance benefits; (m) revalue any of its assets,
other than in the ordinary course of business; (n) pay more than $25,000 in any
one case (or $100,000 in the aggregate) of any obligation except in the ordinary
course of business or liabilities reflected or reserved against in certain of
IWL's financial statements; (o) change any material election or any accounting
method in respect of taxes; or (p) take any action which would jeopardize the
ability of the business combination to be effected by the Mergers and the
Interest Exchange from being accounted for as a pooling of interests.
 
NO SOLICITATION OF TRANSACTIONS
 
    The Merger Agreement provides that Telecommunications and the Partnership
will not nor will it allow any of its officers, directors, or shareholders
affiliated with any officer, director, or Telecommunications' agents, directly
or indirectly, solicit, initiate, encourage or participate in any discussions or
negotiations relating to an Acquisition Proposal (as defined below) or cooperate
with any Acquisition Proposal. Except for disclosures made in the ordinary
course of business, Telecommunications and the Partnership will not disclose
information concerning its business and properties.
 
    As defined in the Merger Agreement, "Acquisition Proposal" means a proposal
or offer for a tender or exchange offer, merger, consolidation or other business
combination involving Telecommunications or the Partnership or any proposal to
acquire in any manner a substantial equity interest in, or all or substantially
all the assets of, Telecommunications or the Partnership.
 
CONTROL OF OTHER PARTY'S BUSINESS
 
    Nothing in the Merger Agreement grants (i) IWL the right to control or
direct Telecommunications or the Partnership's operations prior to the Effective
Time, or (ii) Telecommunications or the Partnership the right to control or
direct IWL's operations prior to the Effective Time.
 
EMPLOYMENT AGREEMENTS
 
    The Merger Agreement provides that on or prior to the date thereof, each of
Ignatius W. Leonards, Byron M. Allen, Errol J. Olivier, Richard H. Roberson and
Bryan L. Olivier, who are currently IWL employees, and Jere W. Thompson, Jr.,
Scott L. Roberts, Timothy W. Rogers and Timothy M. Terrell, who are currently
Telecommunications' employees, will enter into an employment agreements (which
shall include covenants not to compete) with Holdings. Under the terms of the
Merger Agreement, prior to the
 
                                      157
<PAGE>
Effective Time, Telecommunications is responsible for the performance of all of
Holdings' obligations under the Employment Agreements of Telecommunications
employees and IWL is responsible for the performance of all of Holdings'
obligations under the Employment Agreements with the IWL employees, in each case
including obligations to pay base compensation and bonus (if any), tax
withholding and payment obligations (including with respect to FICA, Medicare
and all other similar taxes) and employee expense reimbursement obligations.
 
POOLING ACCOUNTING
 
    IWL, the Partnership and Telecommunications are each required under the
Merger Agreement to use commercially reasonable efforts to cause the business
combination to be effected by the Mergers and the Interest Exchange to be
accounted for as a pooling of interests. Each of IWL, the Partnership and
Telecommunications are also required under the Merger Agreement to use
commercially reasonable efforts to cause their respective "affiliates" (within
the meaning of Rule 145 promulgated under the Securities Act) not to take any
action that would adversely affect the ability of the parties to account for the
business combination to be effected by the Mergers and the Interest Exchange as
a pooling of interests.
 
TERMINATION
 
    At any time prior to the Effective Time, the Merger Agreement may be
terminated, in each case as authorized by the respective Boards of Directors of
IWL, on the one hand, or of Telecommunications or the General Partner, on the
other hand, as follows: (a) by mutual written consent of IWL, Telecommunications
and the General Partner; (b) by either IWL, on the one hand (referred to as
"party" to the Transaction), or Telecommunications and the Partnership, on the
other hand (also collectively referred to as a "party" to the Transaction), if
the Mergers and the Interest Exchange shall not have been consummated on or
before December 31, 1998 (unless such failure to consummate is caused solely by
reason of the failure to obtain certain regulatory approvals, in which case the
Termination Date shall be extended to February 16, 1999) unless the terminating
party caused the failure to consummate; (c) by either party if the other party
shall have made a misrepresentation or breached an obligation under the Merger
Agreement, and such breach or misrepresentation is not cured within 30 days
after notice thereof and such breaches or misrepresentations result or would
reasonably be expected to result in a Material Adverse Effect on the terminating
party; (d) by either party upon the occurrence of a Material Adverse Effect on
the other party or an event which could reasonably be expected to result in a
Material Adverse Effect on the other party; (e) by either party (the
"terminating party") (i) if the other party's Board of Directors or any
committee of the Board of Directors or the General Partner, as applicable, shall
withdraw or modify in any adverse manner its approval or recommendation of the
Merger Agreement or the Mergers or the Interest Exchange or (ii) if the
terminating party's own Board of Directors or any committee of the Board of
Directors or General Partner, as applicable (x) shall withdraw or modify in any
adverse manner its approval or recommendation of the Merger Agreement or the
Mergers or the Interest Exchange; (f) by either party if any of the required
approvals of the shareholders or Partners, as the case may be, shall fail to
have been obtained; (g) by either party prior to the approval of the Merger
Agreement by the shareholders or the partners of such party, as applicable, upon
two business days' prior notice to the other party, if, as a result of an
Acquisition Proposal received from a person other than a party to the
Transaction or any of its affiliates, the Board of Directors or the General
Partner, as applicable, of such party determines in good faith, on the basis of
oral or written advice of outside counsel, that their fiduciary obligations
under applicable law require that such Acquisition Proposal be accepted;
provided, however, that (i) the Board of Directors or the General Partner of
such party shall have concluded in good faith, after considering applicable
provisions of law, on the basis of oral or written advice of outside counsel,
that such action is necessary for the Board of Directors or the General Partner
of such party to act in a manner consistent with its fiduciary duties under
applicable law and (ii) prior to any such termination, the terminating party
shall, and shall cause its respective financial and legal advisors to, negotiate
with the non-terminating party to adjust the terms and conditions of the Merger
Agreement to provide the opportunity for the terminating
 
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<PAGE>
party to proceed with the transactions contemplated thereby; or (h) by IWL,
Telecommunications or the Partnership if there exists a final, nonappealable
order or a ruling by a court of competent jurisdiction or governmental,
regulatory or administrative agency or commission permanently restraining,
enjoining or otherwise prohibiting the transactions contemplated by the Merger
Agreement. See "--Certain Covenants."
 
EFFECT OF TERMINATION
 
    The Merger Agreement obligates IWL to pay to Telecommunications and the
Partnership, or Telecommunications and the Partnership to pay to IWL, in certain
circumstances set forth in the Merger Agreement, a termination fee of 2.5
million in cash in the aggregate (the "Termination Fee") on the date the Merger
Agreement is terminated. The Merger Agreement obligates Telecommunications and
the Partnership to pay to IWL the Termination Fee if (i) IWL (or in certain
cases, Telecommunications and the Partnership) terminates the Merger Agreement
because the Board of Directors or any committee thereof of Telecommunications or
the General Partner withdraws or modifies in any adverse manner its approval or
recommendation of the Merger Agreement, the Mergers or the Interest Exchange,
(ii) IWL or Telecommunications or the Partnership terminate the Merger Agreement
due to the failure to obtain the required approval from the Telecommunications
shareholders or the Partnership's partners, (iii) Telecommunications and the
Partnership terminate the Merger Agreement prior to the approval of the Merger
Agreement by the Telecommunications shareholders or the partners of the
Partnership, upon Telecommunications or the Partnership having received an
Acquisition Proposal and the Telecommunications Board or the General Partner
Board having concluded that its fiduciary obligations under applicable law
require that such Acquisition Proposal be accepted, or (iv) IWL terminates the
Merger Agreement as a result of Telecommunications and the Partnership's failure
to take all action necessary to obtain approval of the Transaction from their
respective shareholders and partners. In such event, $1,875,000 of the
Termination Fee will be paid by Telecommunications and $625,000 will be paid by
the Partnership.
 
    In addition, the Merger Agreement obligates IWL to pay to Telecommunications
and the Partnership the Termination Fee if (i) Telecommunications and the
Partnership (or in certain cases, IWL) terminate the Merger Agreement because
the IWL Board or any committee thereof withdraws or modifies in any adverse
manner its approval or recommendation of the Merger Agreement, the Mergers, or
the Interest Exchange; (ii) IWL or Telecommunications or the Partnership
terminate the Merger Agreement due to the failure to obtain the required
approval from the IWL shareholders, (iii) IWL terminates the Merger Agreement
prior to the approval of the Merger Agreement by the IWL shareholders upon IWL
having received an Acquisition Proposal and the IWL Board having concluded that
its fiduciary obligations under applicable law require that such Acquisition
Proposal be accepted, or (iv) Telecommunications or the Partnership terminates
the Merger Agreement as a result of IWL's failure to take all action necessary
to obtain approval of the Transaction from IWL's shareholders. In such event,
IWL will pay $1,875,000 of the Termination Fee to Telecommunications and will
pay $625,000 of the Termination Fee to the Partnership.
 
EXPENSES
 
    Each of the parties to the Merger Agreement will bear its own costs and
expenses incurred in connection with the Merger Agreement and the transactions
contemplated thereby, except that the expenses incurred in connection with the
printing of this Joint Proxy Statement/Prospectus and the Registration Statement
will be shared equally by Telecommunications and IWL.
 
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<PAGE>
MODIFICATION OR AMENDMENT
 
    The Merger Agreement may be amended by action taken in writing by all of the
parties at any time before the Effective Time, but after approval of the Mergers
and the Interest Exchange by the shareholders of IWL or Telecommunications or
the partners of the Partnership (whichever shall occur first), no amendment may
be made that would (a) alter or change the amounts or kinds of consideration to
be received by the holders of IWL Common Stock or Telecommunications Common
Stock or holders of Partnership Interests upon consummation of the Mergers and
the Interest Exchange, (b) alter or change any term of the Articles of
Incorporation of either of the Surviving Corporations or (c) alter or change any
of the terms and conditions of the Merger Agreement if such alteration or change
would adversely affect the holders of any class or series of securities of
Holdings, IWL, Telecommunications or the Partnership. The Merger Agreement has
been amended twice and the amendments are included in the Appendix hereto. The
original Merger Agreement (as amended April 30, 1998) provided that each
outstanding share of IWL common stock would be converted into one share of
Holdings common stock, a Telecommunications Ratio of .75295288 and, Interest
Exchange Consideration of 26,619.8. On June 20, 1998, the original Merger
Agreement was amended for the second time. The First Amendment to the Merger
Agreement was made on April 30, 1998 to make minor adjustments to the
Telecommunications Exchange Ratio in order to address calculation errors in the
number of options and shares of Telecommunications common stock that were
outstanding. Such amendment did not change any of the other exchange ratios or
change the total number of shares that had been approved for issuance by
Holdings. The Second Amendment provided that a Telecommunications Exchange Ratio
of 1.789030878 and Interest Exchange Consideration of 63,194.54. The amendment
is expected to result in an additional 14,639,148 shares of Holdings common
stock being issued, for a total of 29,738,607 (assuming all of the Partnership
interests are validly tendered to and accepted by Holdings in the exchange
offer). The Second Amendment and the revised exchange ratios were prompted by
assertions by Telecommunications and the Partnership that the reduction in IWL's
revenues from its plan and the delays in contracts, among other factors,
constituted a Material Adverse Effect (as defined in the Merger Agreement) with
respect to IWL which could reasonably be expected to have a Material Adverse
Effect on Telecommunications and the Partnership. In lieu of terminating the
Merger Agreement or disputing whether such a right to terminate existed, the
parties agreed to modify the exchange ratios. In modifying the exchange ratios,
the parties considered, among other factors, (i) contract delays causing lower
IWL project revenues and operating income than those set forth in the IWL
business plan furnished to Telecommunications and the Partnership in connection
with the original negotiations of the Merger Agreement, (ii) the continued
improvement in Telecommunications' and the Partership's operations, and (iii)
the significant expansion in Telecommunications' and the Partnership's business
plans from the plans furnished to IWL in connection with the original
negotiations of the Merger Agreement. The second amendment was entered into on
June 20, 1998 to adjust the IWL Exchange Ratio, the Telecommunications Exchange
Ratio and the Interest Exchange Consideration, to remove various conditions to
closing that had been met or which had been determined to not be material, and
to allow for the issuance by Holdings, Telecommunications and the Partnership of
the Proposed Notes and their guarantee by IWL.
 
                               INTEREST EXCHANGE
 
TERMS OF THE EXCHANGE OFFER; EXPIRATION DATE
 
    Partners in the Partnership are being offered the opportunity to tender
their Partnership Interests in exchange for Holdings Common Stock (the "Exchange
Offer"). Each one percent (1%) of the Partnership Interests issued and
outstanding immediately before the Effective Time and all rights in respect
thereof at the Effective Time shall, upon the execution and delivery by the
holder thereof of a Contribution Agreement with respect to such Partnership
Interests and the acceptance thereof by Holdings, be exchanged for 63,194.54
shares of Holdings Common Stock. Upon the terms and subject to the conditions of
the Exchange Offer, as stated herein, Holdings will accept for exchange all
Partnership Interests validly
 
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tendered on or prior to the Expiration Date and not withdrawn in accordance with
the procedures set forth in this section. For purposes of the Exchange Offer,
the term "Expiration Date" shall mean 12:00 midnight, Eastern Time, on July
           , 1998, unless Holdings, in its sole discretion, shall have extended
the period of time for which the Exchange Offer is open, in which event the term
"Expiration Date" shall mean the latest time and date on which the Exchange
Offer, as extended by Holdings, shall expire. See "Interest Exchange--Extension
of Tender Period" for a description of Holdings' right to extend the period of
time during which the Exchange Offer is open and to amend or terminate the
Exchange Offer.
 
    If, prior to the Expiration Date, Holdings increases the consideration
offered for Partnership Interests pursuant to the Exchange Offer, the increased
consideration will be delivered for all Partnership Interests accepted for
exchange pursuant to the Exchange Offer, regardless of whether the Partnership
Interests were tendered prior to the increase in the consideration offered.
 
    The Exchange Offer is conditioned upon satisfaction of certain conditions.
See "Interest Exchange-- Conditions," which describes the conditions of the
Exchange Offer. Holdings reserves the right (but in no event shall be
obligated), in its sole discretion, to waive any or all of those conditions. If,
on or prior to the Expiration Date, any or all of the Exchange Offer Conditions
(as described below) have not been satisfied or waived, Holdings reserves the
right to (i) decline to exchange any of the Partnership Interests tendered and
terminate the Exchange Offer, (ii) waive all of the unsatisfied Exchange Offer
Conditions and, subject to complying with applicable rules and regulations of
the Commission, exchange all Partnership Interests validly tendered, (iii)
extend the period of time during which the Exchange Offer is open and, subject
to the right of the holders of Partnership Interests to withdraw such
Partnership Interests until the Expiration Date, retain the Partnership
Interests that are tendered prior to the Expiration Date and/or (iv) amend the
Exchange Offer.
 
    By executing and delivering a Contribution Agreement, a partner will not
only tender its Parnership Interest but will, among other things, also make
certain representations, waive ceratin rights, agree to certain actions and
appoint certain proxies and attorney-in-fact, all as described under
"--Represenations, Approvals, Appointments, Waivers, and Covenants." The
partners in the Partnership do not have rights equivalent to a corporate
shareholder's appraisal rights. Any partner not executing a Contribution
Agreement will remain a partner in the Partnership. See "Merger
Agreement--Certain Conditions."
 
    For a discussion of federal tax consequences applicable to the proposed
Interest Exchange, see "The Transaction--Certain United States Federal Income
Tax Consequences of the Interest Exchange."
 
    This Joint Proxy Statement/Prospectus and the accompanying Contribution
Agreement are being mailed by Holdings to the persons shown by the Partnership's
records to have been holding Partnership Interests as of          1998.
 
ACCEPTANCE FOR EXCHANGE
 
    Upon the terms of the Exchange Offer and subject to the satisfaction of the
Exchange Offer Conditions (as described below), Holdings will accept for
exchange all Partnership Interests validly tendered and not withdrawn in
accordance with the procedures specified in this section as promptly as
practicable following the Expiration Date. In all cases, exchanges of
Partnership Interests made pursuant to the Exchange Offer will be made only
after timely receipt by Holdings of a properly completed and duly executed
Contribution Agreement. If any tendered Partnership Interests are not exchanged
for shares of Holdings Common Stock for any reason, the Contribution Agreement
with respect to such Partnership Interests will be destroyed by Holdings and the
holders shall retain such Partnership Interests with all current rights,
obligations and liabilities.
 
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CONDITIONS
 
    Satisfaction of the following conditions (the "Exchange Offer Conditions")
is a condition of the Interest Exchange:
 
    MINIMUM ACCEPTANCE.  The General Partner and partners holding, in the
aggregate, at least 80% of the limited Partnership Interests in the Partnership
shall have executed and delivered to Holdings a Contribution Agreement in
respect of such partner's Partnership Interest.
 
    MERGERS.  If the Mergers are not approved by the requisite vote of all
shareholders eligible to vote for the Mergers or not consummated for some other
reason, no tenders will be accepted by Holdings and the Interest Exchange will
not be consummated.
 
    OTHER CONDITIONS.  The Interest Exchange is also subject to satisfaction of
those conditions described under "The Merger Agreement--Certain Conditions" as
well as qualifications under the applicable securities laws of the states in
which the partners and Holdings reside. Any determination by Holdings concerning
the events set forth above will be final and binding on all parties. The
foregoing conditions are for the sole benefit of Holdings and may be waived by
it in its sole discretion, in whole or in part.
 
PROCEDURE FOR TENDERING PARTNERSHIP INTERESTS
 
    VALID TENDER.  In order for a tendering general or limited partner of the
Partnership to participate in the Interest Exchange, such partner's Partnership
Interests must be validly tendered and not withdrawn on or prior to the
Expiration Date. To validly tender Partnership Interests, a properly completed
and duly executed Contribution Agreement, together with any requisite
assignments, releases or other documents indicated in the Contribution
Agreement, must be received by Holdings on or prior to the Expiration Date.
 
    DELIVERY OF CONTRIBUTION AGREEMENT.  The method of delivery of the
Contribution Agreement is at the option and risk of the tendering partner, and
delivery will be deemed made only when actually received by Holdings. In all
cases, sufficient time should be allowed to assure timely delivery.
 
    DETERMINATION OF VALIDITY; REJECTION OF INTERESTS'; WAIVER OF DEFECTS; NO
OBLIGATION TO GIVE NOTICE OF DEFECTS.  All questions as to the validity, form,
eligibility (including time of receipt) and acceptance for exchange of any
tender (or subsequent withdrawal) of Partnership Interests pursuant to the
Exchange Offer will be determined by Holdings, in its sole discretion, which
determination shall be final and binding. Holdings reserves the absolute right
to reject any or all tenders or withdrawals of any particular Partnership
Interests determined by it not to be in proper form or if the acceptance of or
exchange for those Partnership Interests may, in the opinion of Holdings's
counsel, be unlawful. Holdings also reserves the absolute right to waive or
amend any of the conditions of the Exchange Offer that it is legally permitted
to waive as to the tender of any particular Partnership Interests and to waive
any defect or irregularity in any tender or withdrawal with respect to any
particular Partnership Interests of any particular partner. Holdings'
interpretation of the terms and conditions of the Exchange Offer (including the
Contribution Agreement) will be final and binding. No tender or withdrawal of
Partnership Interests will be deemed to have been validly made until all defects
and irregularities have been cured or waived. None of Holdings or any other
person will be under any duty to give notification of any defects or
irregularities in the tender or subsequent withdrawal of any Partnership
Interests or will incur any liability for failure to give any such notification.
 
    SPECIAL REQUIREMENTS OF CERTAIN PARTNERS.  Some of the partners of the
Partnership are corporations. With respect to Partnership Interests tendered by
any such entities, Holdings will require that each Contribution Agreement be
accompanied by evidence acceptable to Holdings that such entity has met all
requirements of its governing instruments, such as its applicable articles of
incorporation or bylaws, and is authorized to tender such Partnership Interests
under the laws of the jurisdiction in which such entity was organized. There may
also be required an opinion of counsel for each such partners of the
Partnership, in a
 
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form acceptable to Holdings, to the effect that the tender of Partnership
Interests by such entity has been duly authorized and does not violate its
governing instruments and is legal, valid, and binding on such entity.
 
    Holders of Partnership Interests who are individuals living in community
property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico,
Texas, and Washington) may be required to present evidence acceptable to
Holdings that the transfer of Partnership Interests to Holdings is not done in
violation of the applicable community property laws.
 
    BINDING OBLIGATION.  A tender of Partnership Interests pursuant to and in
accordance with the procedures described in this section and the acceptance of
shares of Holdings Common Stock by a partner in exchange for such Partnership
Interests will constitute a binding agreement between the tendering partner and
Holdings on the terms set forth in this Joint Proxy Statement/Prospectus and in
the Contribution Agreement.
 
WITHDRAWAL RIGHTS
 
    Tenders of Partnership Interests made pursuant to the Exchange Offer are
irrevocable, except that Partnership Interests tendered pursuant to the Exchange
Offer may be withdrawn at any time prior to the Expiration Date and, unless
already accepted for exchange as provided in this Exchange Offer, may also be
withdrawn at any time after August 31, 1998. For withdrawal to be effective, a
written notice of withdrawal must be timely received by Holdings. Any such
notice of withdrawal must specify the name of the partner who tendered the
Partnership Interests to be withdrawn and must be signed by the person(s) who
signed the Contribution Agreement in the same manner as the Contribution
Agreement was signed. Partnership Interests properly withdrawn will be deemed to
not be validly tendered for purposes of the Exchange Offer. Withdrawn
Partnership Interests may be re-tendered, however, by following the procedures
described in this section at any time prior to the Expiration Date.
 
REPRESENTATIONS, APPOINTMENTS, WAIVERS AND COVENANTS
 
    REPRESENTATIONS.  By executing and delivering a Contribution Agreement, each
tendering partner will represent in the Contribution Agreement that, among other
things, (i) such partner has the right and authority to transfer the tendered
Partnership Interest, (ii) such Partnership Interest is free and clear of all
liens, encumbrances, and adverse claims other than those liens securing
indebtedness of the Partnership or which were otherwise taken into account in
the calculation of the exchange value of such Partnership Interest, (iii) the
partner has not made any binding commitment requiring such partner to dispose of
the shares of Holdings Common Stock to be received by such partner in the
Interest Exchange and (iv) such partner has no plan or intention of making such
a disposition.
 
    APPROVALS.  By executing and delivering a Contribution Agreement, each
tendering partner will approve and consent to a number of items, including the
following: (i) the Merger Agreement, (ii) the Plan Proposals, (iii) the
transfers of the Partnership Interests to Holdings in the Exchange Offer and the
subsequent transfer of the Partnership Interest of the General Partner to C-Sub,
which, as a result of the Telecommunications Merger, will be transferred to
Telecommunications, (iv) the substitution of Telecommunications as a general
partner of the Partnership in respect of the Partnership Interests transferred
to it without the necessity of signing the Shareholders Agreement as otherwise
required by the Partnership Agreement and the substitution of Holdings as a
limited partner in respect of the Partnership Interests transferred to it, (v)
the continuation of the business of the Partnership to the extent any of the
actions effected pursuant to the Transaction would cause a dissolution of the
Partnership, and (vi) any amendment to the Partnership Agreement necessary to
permit any of the actions effected pursuant to the foregoing or the Transaction.
 
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    WAIVERS.  By executing and delivering a Contribution Agreement, a partner
will waive (i) any rights it may have to purchase Partnership Interests that are
transferred in the Interest Exchange or subsequently transferred by Holdings to
C-Sub or in the Telecommunications Merger, including those rights of first
refusal granted in the Partnership Agreement and (ii) any default that exists
under the Partnership Agreement as a result of the Interest Exchange or any of
the other matters consented to by the partner in the Contribution Agreement.
 
    COVENANTS.  Each partner who executes and delivers a Contribution Agreement
will agree to take such further action and execute such further documents as
Holdings may request in order to effect or confirm the Interest Exchange and the
other matters addressed by the Contribution Agreement.
 
    APPOINTMENT OF PROXY AND ATTORNEY-IN-FACT.  By executing and delivering a
Contribution Agreement, a tendering partner will irrevocably appoint Holdings
and its executive officers and designees as the partner's proxies, in the manner
set forth in the Contribution Agreement, each with full power of substitution,
to the full extent of the partner's rights with respect to the Partnership
Interests tendered by the partner and accepted for exchange by Holdings. Each
such proxy shall be considered coupled with an interest in the tendered
Partnership Interests. Such appointment will be effective when, and only to the
extent that, Holdings accepts the tendered Partnership Interests for exchange.
Upon such acceptance for exchange, all prior proxies given by the partner with
respect to the Partnership Interests will, without further action, be revoked,
and no subsequent proxies may be given (and if given will not be effective).
Holdings and its executive officers and designees will, as to those Partnership
Interests, be empowered to exercise all voting and other rights of the partner
as they in their sole discretion may deem proper at any meeting of partners, by
written consent or otherwise. Holdings reserves the right to require that, in
order for Partnership Interests to be deemed validly tendered, immediately upon
Holding's acceptance for exchange of the Partnership Interests, Holdings must be
able to exercise full voting rights with respect to the Partnership Interests,
including voting at any meeting of partners then scheduled or acting by written
consent without a meeting.
 
    By executing and delivering a Contribution Agreement, a tendering partner
will also irrevocably constitute and appoint Holdings and its executive officers
and designees as the partner's attorneys-in-fact, each with full power of
substitution, to the full extent of the partner's rights with respect to the
Partnership Interests tendered by the partner and accepted for exchange by
Holdings. Such appointment will be effective when, and only to the extent that,
Holdings accepts the tendered Partnership Interests for exchange. The tendering
partner agrees not to exercise any rights pertaining to the tendered Partnership
Interests without the prior consent of Holdings. Upon such acceptance for
exchange, all prior powers of attorney granted by the partner with respect to
such Partnership Interests will, without further action, be revoked, and no
subsequent powers of attorney may be granted (and if granted will not be
effective). Pursuant to such appointment as attorneys-in-fact, Holdings and its
executive officers and designees each will have the power, among other things to
transfer ownership of such Partnership Interests on the Partnership books (and
execute and deliver any accompanying evidences of transfer and authenticity any
of them may deem necessary or appropriate in connection therewith).
 
EXTENSION OF TENDER PERIOD; TERMINATION; AMENDMENT
 
    Holdings expressly reserves the right, in its sole discretion, at any time
and from time to time, (i) to extend the period of time during which the
Exchange Offer is open and thereby delay acceptance for exchange of validly
tendered Partnership Interests, (ii) to terminate the Exchange Offer and not
accept for exchange any Partnership Interests not already accepted for exchange,
or (iii) to amend the Exchange Offer in any respect. In the case of an extension
of the Exchange Offer, the extension will be followed by a press release or
public announcement that will be issued no later than 9:00 a.m., Eastern Time,
on the next business day after the then scheduled Expiration Date, in accordance
with Rule 14e-1(d) under the Exchange Act.
 
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    If Holdings makes a material change in the terms of the Exchange Offer or
the information concerning the Exchange Offer or waives an Exchange Offer
Condition, Holdings will extend the Exchange Offer and disseminate additional
tender offer materials to the extent required by Rules 14d-4(c) and 14d-6(d)
under the Exchange Act. The minimum period during which an offer must remain
open following a material change in the terms of the offer or information
concerning the Exchange Offer will depend upon the facts and circumstances,
including the relative materiality of the change in the terms or information. In
the Commission's view, an offer should remain open for a minimum of five
business days from the date the material change is first published, sent or
given to security holders, and if material changes are made with respect to
information that approaches the significance of price or the percentage of
securities sought, a minimum of ten business days may be required to allow for
adequate dissemination to security holders and investor response. As used in
this section, "business day" means any day other than a Saturday, Sunday or a
federal holiday, and consists of the time period from 12:01 a.m. through 12:00
midnight, Eastern Time.
 
                               THE PLAN PROPOSALS
 
    Terms not otherwise defined in this discussion of the Plan Proposals shall
have the meanings ascribed to them in Equity Incentive Plan, a copy of which is
attached as Appendix VI.
 
THE EQUITY INCENTIVE PLAN
 
    IN GENERAL.  The Equity Incentive Plan was adopted and approved in June 1998
by the Holdings Board and was approved by the IWL Board and the
Telecommunications Board, in each case subject to the approval of the holders of
the common stock of their respective companies. The Equity Incentive Plan is
intended to provide a means by which selected employees of and consultants to
Holdings and its subsidiaries may be given an opportunity to acquire an equity
interest in Holdings. Holdings, by means of the Equity Incentive Plan, will seek
to retain the services of persons who are or become employees of or consultants
to Holdings and its subsidiaries and to provide incentives for such persons to
exert maximum efforts for the success of Holdings and its subsidiaries.
 
    ADMINISTRATION.  The Equity Incentive Plan will be administered by a
Compensation Committee ("Committee") appointed by the Holdings Board, whose
members will serve at the pleasure of the Holdings Board. The Committee will
have two or more members, each of whom will be an "outside director" within the
meaning of Treasury Regulation Section 1.162-27(e)(3). In addition, such
committee members will also be Non-Employee Directors within the meaning of Rule
16b-3 promulgated under the Exchange Act. If no Committee is so designated, then
the Equity Incentive Plan will be administered by the entire Holdings Board. The
Committee will have full authority, subject to the provisions of the Equity
Incentive Plan, to award (i) Stock Options, (ii) Stock Appreciation Rights,
(iii) Restricted Stock, (iv) Deferred Stock, (v) Stock Reload Options and/or
(vi) Other Stock-Based Awards (collectively, "Awards").
 
    Subject to the provisions of the Equity Incentive Plan, the Committee will
determine, among other things, the persons to whom from time to time Awards may
be granted ("Participants"), the specific type of Awards to be granted (e.g.,
Stock Options, Restricted Stock, etc.), the number of shares subject to each
Award, share prices, any restrictions or limitations on such Awards and any
vesting, exchange, deferral, surrender, cancellation, acceleration, termination,
exercise or forfeiture provisions related to such Awards. The interpretation and
construction by the Committee of any provisions of, and the determination of any
questions arising under the Equity Incentive Plan or any rule or regulation
established by the Committee pursuant to the Equity Incentive Plan will be
final, conclusive and binding on all persons interested in the Equity Incentive
Plan.
 
    SHARES SUBJECT TO THE PLAN, GENERAL TERMS.  The Equity Incentive Plan
authorizes the granting of Awards which would allow up to an aggregate of
5,000,000 shares of Holdings Common Stock to be
 
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acquired by the Holders and provides that a maximum of 2,500,000 shares of
Holdings Common Stock may be issued to any one Holder. In order to prevent the
dilution or enlargement of the rights of Participants under the Equity Incentive
Plan, the number of shares of Holdings Common Stock authorized by the Equity
Incentive Plan is subject to adjustment by the Holdings Board in the event of
any increase or decrease in the number of shares of outstanding Holdings Common
Stock resulting from a stock dividend, stock split, reverse stock split, merger,
reorganization, consolidation, recapitalization or other change in corporate
structure affecting the Holdings Common Stock. If any shares granted under the
Equity Incentive Plan are forfeited or terminated, such shares will again be
available for distribution in connection with Awards subsequently granted under
the Equity Incentive Plan.
 
    ELIGIBILITY.  Subject to the provisions of the Equity Incentive Plan, Awards
may be granted to key employees, officers, directors, and other persons who are
deemed to have rendered or to be able to render significant services to Holdings
or its subsidiaries and are deemed to have contributed or to have the potential
to contribute to the success of Holdings. Incentive Stock Options may be awarded
only to persons who, at the time of such awards, are employees of Holdings or
its subsidiaries.
 
    STOCK OPTIONS.  Options granted under the Equity Incentive Plan may be
either options that are intended to qualify for treatment as "incentive stock
options" under Section 422 of the Code or options that do not so qualify.
Options may be granted under the Equity Incentive Plan to any person who is an
officer or other employee (including an officer or other employee who is also a
director) or consultants of Holdings or any of its subsidiaries. The exercise
price of Incentive Stock Options must be at least the fair market value of a
share of Holdings Common Stock on the date of grant (and not less than 110% of
the fair market value in the case of an Incentive Stock Option granted to an
optionee owning 10% or more of Holdings Common Stock). The exercise price of
Non-qualified Stock Options may be less than 100% of the fair market value of a
share of Holdings Common Stock on the date of grant. The term of an option may
not exceed 10 years (five years in the case of an Incentive Stock Option granted
to an optionee owning 10% or more of Holdings Common Stock).
 
    STOCK APPRECIATION RIGHTS.  The Committee may grant Stock Appreciation
Rights ("SARs" or singularly "SAR") in conjunction with all or part of any
Option granted under the Equity Incentive Plan or may grant SARs on a
freestanding basis. In conjunction with Non-qualified Stock Options, SARs may be
granted either at or after the time of the grant of such Non-qualified Stock
Options. In conjunction with Incentive Options, SARs may be granted only at the
time of the grant of such Incentive Stock Options. An SAR entitles the Holder
thereof to receive an amount (payable in cash and/or shares of Common Stock, as
determined by the Committee) equal to the excess fair market value of one share
of Common Stock of the Company over the SAR price or the exercise price of the
related Option, multiplied by the number of shares subject to the SAR.
 
    RESTRICTED STOCK AWARDS.  The Committee may award shares of restricted stock
("Restricted Stock") either alone or in addition to other Awards granted under
the Equity Incentive Plan. The Committee shall determine the restricted period
during which the shares of stock may be forfeited if, for example, the Holder's
employment is terminated. In order to enforce the forfeiture provisions, the
Equity Incentive Plan requires that all shares of Restricted Stock awarded to
the Holder remain in the physical custody of Holdings until the restrictions on
such shares have terminated.
 
    DEFERRED STOCK.  The Committee may award shares of deferred stock ("Deferred
Stock") either alone or in addition to other Awards granted under the Equity
Incentive Plan. The Committee shall determine the deferral period during which
time the receipt of the stock is deferred. The Award may specify, for example,
that the Holder must remain employed by Holdings during the entire deferral
period in order to be issued the stock.
 
    STOCK RELOAD OPTIONS.  The Committee may grant Stock Reload Options in
conjunction with any Option granted under the Equity Incentive Plan. In
conjunction with Incentive Options, Stock Reload
 
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Options may be granted only at the time of the grant of such Incentive Option.
In conjunction with Non-qualified Options, Stock Reload Options may be granted
either at or after the time of the grant of such Non-qualified Options. A Stock
Reload Option permits a Holder who exercises an Option by delivering already
owned stock (i.e., the stock-for-stock method) to receive back from Holdings a
new Option (at the current market price) for the same number of shares delivered
to exercise the Option, which new Option may not be exercised until one year
after it was granted and expires on the date the original option would have
expired (had it not been previously exercised).
 
    OTHER STOCK-BASED AWARDS.  The Committee may grant performance shares and
shares of stock valued with reference to the performance of Holdings, either
alone or in addition to or in tandem with Stock Options, Restricted Stock or
Deferred Stock. Subject to the terms of the Equity Incentive Plan, the Committee
has complete discretion to determine the terms and conditions applicable to any
such stock-based awards. Such terms and conditions may require, among other
things, continued employment and/or the attainment of specified performance
objectives.
 
    CHANGE IN CONTROL
 
    Awards may be granted under the Equity Incentive Plan that at any time after
the Effective Time of the Mergers, in the event of (i) any person or group of
persons becoming for the first time the beneficial owner, directly or
indirectly, of more than 50% of the total voting stock of Holdings, other than
as a result of a transfer or series of related transfers of voting stock from a
person or group of persons who immediately prior to such transfer or transfers
was the beneficial owner, and who after giving effect to such transfer or
transfers continues to be the beneficial owner, of more than 50% of the voting
stock of Holdings; (ii) a merger (other than the Mergers) or consolidation of
Holdings as a result of which the holders of all of the voting stock of Holdings
prior to such event do not continue to hold either directly or indirectly at
least a majority of Holdings voting stock after such event, (iii) a sale of all
or substantially all of the assets of Holdings or (iv) certain changes in the
majority of the Holdings Board during any 12 consecutive month period any
portion of which is after the Effective Time of the Mergers, the Awards may be
exercised in whole or in part without regard to any provisions thereof. The
accelerated vesting of outstanding Awards upon the occurrence of such a "change
in control" transaction could have the effect of delaying, deferring, or
preventing a change in control of Holdings.
 
    TERMS AND TERMINATION OF THE EQUITY INCENTIVE PLAN.  The Equity Incentive
Plan will be effective upon shareholder approval of the Equity Incentive Plan
("Effective Date"). Any Awards granted under the Equity Incentive Plan prior to
such approval shall be effective when made (unless otherwise specified by the
Committee at the time of grant), but shall be conditioned upon, and subject to,
the approval of the Equity Incentive Plan by Holdings' stockholders. If the
Equity Incentive Plan is not so approved, all Awards granted thereunder shall be
of no effect and any Holdings Common Stock received by a Participant shall be
deemed forfeited and returned to Holdings by the Holder. Unless terminated by
the Board, the Equity Incentive Plan shall continue to remain effective until
such time as no further Awards may be granted and all Awards granted under the
Equity Incentive Plan are no longer outstanding. Notwithstanding the foregoing,
grants of Incentive Stock Options may only be made during the ten-year period
following the Effective Date.
 
    AMENDMENTS TO THE PLAN.  The Equity Incentive Plan provides that the
Holdings Board may amend or terminate the Equity Incentive Plan in any respect
whatsoever, provided that any such amendment or termination will not affect
Awards previously granted. If required by Rule 16b-3 under the Exchange Act, or
any Code or NASD requirements, the Holdings Board will not amend or terminate
the Equity Incentive Plan without shareholder approval.
 
    REGISTRATION OF SHARES.  Holdings will file with the Commission a
Registration Statement on Form S-8, which will become effective upon filing,
covering the issuance of shares of Holdings Common Stock pursuant to an Award
granted under the Equity Incentive Plan.
 
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    SHAREHOLDER APPROVAL.  The affirmative vote of a majority of the outstanding
shares of IWL Common Stock and Telecommunications Common Stock represented at
the IWL Special Meeting and the Telecommunications Special Meeting,
respectively, and entitled to vote is required for approval of the Equity
Incentive Plan.
 
    EACH OF THE IWL BOARD AND THE TELECOMMUNICATIONS BOARD RECOMMENDS A VOTE FOR
THE APPROVAL OF THE EQUITY INCENTIVE PLAN. UNLESS INDICATED OTHERWISE BY YOUR
PROXY VOTE, THE SHARES REPRESENTED BY SUCH PROXY WILL BE VOTED FOR THE APPROVAL
OF THE EQUITY INCENTIVE PLAN.
 
THE DIRECTOR STOCK OPTION PLAN
 
    The Director Stock Option Plan was approved in June 1998 by each of the IWL
Board, the Telecommunications Board and the Holdings Board, in each case subject
to the approval of the holders of the common stock of their respective
companies. The purpose of the Director Stock Option Plan is to encourage
ownership of Holdings Common Stock by eligible non-employee directors of
Holdings whose continued services are considered essential to Holdings' future
progress and to provide them with a further incentive to remain as directors of
Holdings. All options to be granted under the Director Stock Option Plan will be
Non-qualified Stock Options. A total of 400,000 shares of Holdings Common Stock
have been reserved for issuance under the Director Stock Option Plan.
 
    The Director Stock Option Plan will be administered by the Holdings Board.
The Holdings Board will have full and final authority in their discretion,
subject to the provisions of the Director Stock Option Plan, to (i) determine
the individuals to whom, and the time or times at which, options will be granted
and the number of shares of Common Stock covered by each Option and (ii)
construe and interpret the terms of the Director Stock Option Plan and the
options granted thereunder. Holdings expects that each new non-employee director
of Holdings, upon becoming a director, will receive option grants under the
Director Stock Option Plan. The Holdings Board will also have the authority to
make additional option grants to existing non-employee directors.
 
    Each option will expire ten years from the date of grant. Outstanding
options will expire earlier if an optionee terminates service as a director
before the end of the first ten-year term. If an optionee terminates service as
a director for any reason, including disability or death, the option will
automatically expire three months after the date of termination (but in no event
later than the expiration of the ten-year term). Options are not assignable and
may not be transferred other than by will or the laws of descent and
distribution or pursuant to a qualified domestic relations order. Upon a
dissolution or liquidation of Holdings, each outstanding option will terminate
unless otherwise provided by the Holdings Board. In the event of a proposed sale
of all or substantially all of the assets of Holdings or upon certain mergers in
which the shareholders of Holdings receive cash or securities of another issuer,
the options will be assumed by the successor entity or substituted with an
equivalent option.
 
    The Director Stock Option Plan provides that the Holdings Board may amend or
terminate the Director Stock Option Plan in any respect whatsoever, provided
that any such amendment or termination will not affect options previously
granted. If required by Rule 16b-3 under the Exchange Act or any Code or NASD
requirements, the Holdings Board will not amend or terminate the Director Stock
Option Plan without shareholder approval.
 
    Holdings will file with the Commission a Registration Statement on Form S-8,
which will become effective upon filing, covering the issuance of shares of
Holdings Common Stock upon exercise of options to be granted under the Director
Stock Option Plan.
 
    The affirmative vote of a majority of the outstanding shares of IWL Common
Stock and Telecommunications Common Stock represented at the IWL Special Meeting
and the Telecommunications Special Meeting, respectively, and entitled to vote
is required for approval of the Director Stock Option Plan.
 
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    EACH OF THE IWL BOARD AND THE TELECOMMUNICATIONS BOARD RECOMMENDS A VOTE FOR
THE APPROVAL OF THE DIRECTOR STOCK OPTION PLAN. UNLESS INDICATED OTHERWISE BY
YOUR PROXY VOTE, THE SHARES REPRESENTED BY SUCH PROXY WILL BE VOTED FOR THE
APPROVAL OF THE DIRECTOR STOCK OPTION PLAN.
 
CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
    The following discussion of the principal federal income tax consequences of
participation in the Equity Incentive Plan and the Director Stock Option Plan is
based on statutory authority, as well as judicial and administrative
interpretations as of the date of this Joint Proxy Statement/Prospectus, all of
which are subject to change at any time (possibly with retroactive effect). As
the law is technical and complex, the discussion below necessarily represents
only a general summary.
 
    INCENTIVE STOCK OPTIONS.  Incentive Stock Options granted under the Equity
Incentive Plan are intended to meet the definitional requirements of Section
422(b) of the Code for "incentive stock options."
 
    An employee who receives an Incentive Stock Option does not recognize any
taxable income upon the grant of such Incentive Stock Option. Similarly, the
exercise of an Incentive Stock Option generally does not give rise to federal
income tax to the employee, PROVIDED THAT (i) the federal "alternative minimum
tax," which depends on the employee's particular tax situation, does not apply
and (ii) the employee is employed by Holdings from the date of grant of the
option until 3 months prior to the exercise thereof, except where such
employment terminates by reason of disability (where the 3 month period is
extended to 1 year) or death (where this requirement does not apply). If an
employee exercises an Incentive Stock Option after these requisite periods, the
Incentive Stock Option will be treated as a Non-qualified Stock Option and will
be subject to the rules set forth below under the caption "Non-qualified
Options."
 
    Further, if after exercising an Incentive Stock Option, an employee disposes
of the shares so acquired more than two years from the date of grant and more
than one year from the date of receipt of the shares upon exercise of such
Incentive Stock Option (the "applicable holding period"), the employee will
normally recognize a capital gain or loss equal to the difference, if any,
between the amount received for the shares and the employee's tax basis in such
shares.
 
    If, however, an employee does not hold the shares so acquired for the
applicable holding period, thereby making a "disqualifying disposition," the
employee would realize ordinary income on the excess of the fair market value of
the shares at the time the Incentive Stock Option was exercised over the
exercise price and the balance, if any, would be short-term, mid-term or
long-term capital gain depending on the length of the employee's holding period
and provided that the employee held such shares as a capital asset at such time.
If the sales price of the stock sold in a disqualifying disposition is less than
its fair market value on the exercise date, the ordinary income is limited to
the amount of the gain (if any) realized on the sale. If the sales price of the
stock sold in a disqualifying disposition is less than the exercise price, the
employee will recognize a capital loss.
 
    An employee who exercises an Incentive Stock Option by delivering shares
previously acquired pursuant to the exercise of an Incentive Stock Option is
treated as making a "disqualifying disposition" of his or her shares if the
employee delivers them before the expiration of their applicable holding period.
Upon the exercise of an Incentive Stock Option with previously-acquired shares
as to which no disqualifying disposition occurs, despite some uncertainty, it
appears that the employee would not recognize gain or loss with respect to such
previously-acquired shares.
 
    Holdings will not be allowed a federal income tax deduction upon the grant
or exercise of an Incentive Stock Option or the disposition, after the
applicable holding period, of the shares acquired upon exercise of an Incentive
Stock Option. In the event of a disqualifying disposition, Holdings generally
will be entitled to a deduction equal to the ordinary income recognized by the
employee, provided that such amount
 
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constitutes an ordinary and necessary business expense to Holdings and is
reasonable and the limitations of Sections 280G and 162(m) of the Code do not
apply.
 
    NON-QUALIFIED OPTIONS.  Non-qualified Stock Options granted under the Equity
Incentive Plan or the Director Stock Option Plan are options that do not qualify
as Incentive Stock Options. An individual who receives a Non-qualified Stock
Option generally will not recognize any taxable income upon the grant of such
Non-qualified Stock Option. However, the individual generally will recognize
ordinary income upon exercise of a Non-qualified Stock Option in an amount equal
to the excess of (i) the fair market value of the shares at the time of exercise
over (ii) the exercise price.
 
    The ordinary income recognized with respect to the receipt of shares upon
exercise of a Non-qualified Stock Option will be subject to both wage
withholding and employment taxes.
 
    As a result of Section 16(b) of the Exchange Act, any individual who is an
officer or director of Holdings or a beneficial owner of more than ten percent
(10%) of any class of equity securities of Holdings should consult with his or
her tax advisor as to whether the timing of income recognition is deferred for
any period following the exercise of a Non-qualified Stock Option (i.e., the
"Deferral Period"). Absent an election pursuant to Section 83(b) of the Code
filed with the Internal Revenue Service within 30 days after the date of
transfer of such shares pursuant to the option (the "Section 83(b) election"),
recognition of income by such an individual will be deferred until the
expiration of the Deferral Period, if any.
 
    An individual's tax basis in the shares received on exercise of a
Non-qualified Stock Option will be equal to the amount of any cash paid on
exercise, plus the amount of ordinary income recognized by such individual as a
result of the receipt of such shares. The holding period for such shares would
begin just after the transfer of the shares or, in the case of an officer,
director or beneficial owner of more than 10% of any class of equity securities
of Holdings who does not make a Section 83(b) election, just after the
expiration of the Deferral Period, if any. A federal income tax deduction
generally will be allowed to Holdings in an amount equal to the ordinary income
included by the individual with respect to his or her Non-qualified Stock
Option, provided that such amount constitutes an ordinary and necessary business
expense to Holdings and is reasonable and the limitations of Sections 280G and
162(m) of the Code do not apply.
 
    If an individual exercises a Non-qualified Stock Option by delivering shares
to Holdings, other than shares previously acquired pursuant to the exercise of
an Incentive Stock Option which is treated as a "disqualifying disposition" as
described above, the individual will not recognize gain or loss with respect to
the exchange of such shares, even if their then fair market value is different
from the individual's tax basis. The individual, however, will be taxed as
described above with respect to the exercise of the Non-qualified Stock Option
as if he or she had paid the exercise price in cash, and Holdings likewise
generally will be entitled to an equivalent tax deduction. So long as the
individual receives a separate identifiable stock certificate therefor, the tax
basis and the holding period for that number of shares received on such exercise
that is equal to the number of shares surrendered on such exercise will be equal
to the tax basis and include the holding period of those shares surrendered. The
individual's tax basis and holding period for the additional shares received on
exercise of a Non-qualified Stock Option paid for, in whole or in part, with
shares will be the same as if the individual had exercised the Non-qualified
Stock Option solely for cash.
 
    As described above, upon a Change of Control of Holdings, some or all of the
then-outstanding stock options and other Awards may immediately become
exercisable. In general, if the total amount of payments to an individual that
are contingent upon a "change of control" of Holdings (as defined in Section
280G of the Code), including payments under the Equity Incentive Plan that vest
upon a Change of Control, equals or exceeds three times the individual's "base
amount" (generally, such individual's average annual compensation for the five
complete years preceding the "change of control"), then, subject to certain
exceptions, the payments may be treated as "parachute payments" under the Code,
in which case
 
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a portion of such payments would be non-deductible to Holdings and the
individual would be subject to a 20% excise tax.
 
    STOCK APPRECIATION RIGHTS.  Recipients of SARs do not recognize income upon
the grant of such rights. When a participant elects to receive payment of an
SAR, the participant recognizes ordinary income in an amount equal to the cash
and fair market value of Holdings Common Shares received, and the employer of
such participant is entitled to a deduction equal to such amount.
 
    RESTRICTED STOCK AWARDS.  In the absence of a Section 83(b) election,
grantees of Restricted Stock do not recognize income at the time of the grant of
such stock. When shares of Restricted Stock are no longer subject to a
substantial risk of forfeiture, grantees recognize ordinary income in an amount
equal to the fair market value of the stock less the amount paid, if any, for
the stock. Alternatively, the recipient may elect under Section 83(b) to report
the fair market value of the Restricted Stock as income on the date the stock is
transferred to the recipient, and the employer will be entitled to a
compensation deduction for the same amount.
 
    DEFERRED STOCK.  A recipient of an award of Deferred Stock under the Equity
Incentive Plan will be taxed at ordinary income rates on the fair market value
of the award at the later of the time when the Deferred Stock is transferred to
the recipient or when the recipient's rights in such Deferred Stock become
vested. At that time the employer will be entitled to a deduction equal to the
amount which is includible in the recipient's income.
 
    STOCK RELOAD OPTIONS.  A recipient who receives Stock Reload Options under
the Equity Incentive Plan will be taxed on such Options in the manner described
above under the heading "Incentive Stock Options" or "Nonqualified Options," as
appropriate, and the consequences to the employer will follow that discussion as
well. The recipient will not be taxed on the grant of the Stock Reload Options,
but will be taxed upon their exercise or on a later sale of the underlying
Stock, depending on the nature of the Options.
 
    OTHER STOCK-BASED AWARDS.  The tax consequences arising from the issuance of
Other Stock-Based Awards will depend on the specific terms of the Award, but in
most cases the recipient will be taxed at ordinary income rates on the fair
market value of the Award at the later of the time when cash or Stock is
transferred to the recipient pursuant to the Award or when the recipient's
rights in the subject of the Award become vested.
 
    CERTAIN LIMITATIONS ON DEDUCTIBILITY OF EXECUTIVE COMPENSATION.  With
certain exceptions, Section 162(m) of the Code denies a deduction to
publicly-held corporations for compensation paid to certain executive officers
in excess of $1 million per executive per taxable year (including any deduction
with respect to the exercise of a Non-qualified Stock Option or the
disqualifying disposition of stock purchased pursuant to an Incentive Stock
Option). One such exception applies to certain performance-based compensation
that has been approved by shareholders in a separate vote where certain other
requirements are met. Holdings presently intends that any new Stock Options
granted under the Equity Incentive Plan with an exercise price of not less than
fair market value at the date of grant will qualify for the performance-based
compensation exception to Section 162(m).
 
                        COMPARISON OF SHAREHOLDER RIGHTS
 
    If the Mergers are consummated, IWL's and Telecommunications' shareholders
will receive shares of Holdings Common Stock, and the rights of such
shareholders will be governed by Texas state law, the Articles of Incorporation
of Holdings and the Bylaws of Holdings. The following is a summary of the
material differences between (i) the rights of holders of IWL Common Stock and
the rights of holders of Holdings Common Stock and (ii) the rights of holders of
Telecommunications Common Stock and the rights of holders of Holdings Common
Stock. As each of IWL, Telecommunications and Holdings are
 
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companies incorporated under the laws of the State of Texas, these differences
arise primarily from various provisions of the articles of incorporation and
bylaws of the companies. This summary does not purport to be a complete
statement of the rights of holders of IWL Common Stock, Telecommunications
Common Stock and Holdings Common Stock, and is qualified in its entirety by
reference to, the Texas Business Corporation Act ("TBCA") and the respective
articles of incorporation and bylaws of IWL, Telecommunications and Holdings.
 
COMPARISON OF SHAREHOLDER RIGHTS OF IWL AND HOLDINGS
 
    Since the Articles of Incorporation and Bylaws of Holdings and IWL are
substantially identical, and both companies are incorporated in Texas, the
rights of holders of IWL Common Stock and Holdings Common Stock are
substantially identical and have no material differences.
 
COMPARISON OF SHAREHOLDER RIGHTS OF TELECOMMUNICATIONS AND HOLDINGS
 
AUTHORIZED CAPITAL
 
    TELECOMMUNICATIONS.  The authorized capital stock of Telecommunications is
one hundred thousand (100,000) shares of common stock, par value $.01 per share.
 
    HOLDINGS.  The authorized capital stock of Holdings is two hundred and
twenty million (220,000,000) shares of stock in the aggregate, including two
hundred million (200,000,000) shares of common stock and twenty million
(20,000,000) shares of preferred stock, each having a par value of $.01 per
share.
 
PREFERRED SHARES
 
    TELECOMMUNICATIONS.  The Articles of Incorporation of Telecommunications do
not authorize the issuance of preferred stock.
 
    HOLDINGS.  The Articles of Incorporation of Holdings authorize the Board of
Directors to issue preferred stock in one or more series and to fix or determine
from time to time the designations, preferences, limitations and relative rights
including voting rights of the shares of any series to the same extent that such
designations, preferences, limitations, and relative rights could be stated if
fully set forth in the Articles of Incorporation. Such authority includes,
without limitation, the dividend rights, dividend rate, conversion rights,
voting rights, rights and terms of redemption, redemption price or prices, and
the liquidation preferences of any wholly unissued series of preferred stock.
The holders of common stock may receive distributions and have liquidation
rights subject to the prior rights and preferences of the preferred stock.
 
PREEMPTIVE RIGHTS
 
    TELECOMMUNICATIONS.  The Telecommunications shareholders have the preemptive
right to acquire additional, unissued, or treasury shares of Telecommunications,
or securities of Telecommunications convertible into or carrying a right to
subscribe to or to acquire shares except to the extent limited by Article 2.22
of the TBCA.
 
    HOLDINGS.  The Holdings shareholders are denied the right of any preemptive,
preferential or presumptive right to receive, purchase or subscribe to and
treasury shares, evidences of indebtedness or other securities of Holdings,
subscriptions, warrants or options, but the Telecommunications Board may by
contract grant preemptive rights from time to time.
 
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<PAGE>
MEETINGS OF SHAREHOLDERS
 
    TELECOMMUNICATIONS.  Meetings of shareholders of Telecommunications may be
held within or without the State of Texas, provided that no meeting of
shareholders be held at any place outside of Dallas County, Texas unless all
shareholders agree to the place and time in writing before the meeting is held.
 
    HOLDINGS.  Meetings of shareholders of Holdings may be held inside or
outside the State of Texas, without the consent of the shareholders as to
location.
 
SPECIAL MEETINGS
 
    TELECOMMUNICATIONS.  Special meetings of shareholders of Telecommunications
may be called for any purpose or purposes by the President, the
Telecommunications Board, or the holders of not less than 50% of all shares
entitled to vote at the meeting.
 
    HOLDINGS.  Special meetings of shareholders of Holdings may be called for
any purpose or purposes by the Chief Executive Officer, the President, the
Telecommunications Board, or the holders of not less than 10% of all shares
entitled to vote at the meeting.
 
NOTICE
 
    TELECOMMUNICATIONS.  Written notice of a meeting or special meeting must be
delivered not less than 10 nor more than 50 days before the date of the meeting
to each shareholder of record of Telecommunications entitled to vote at the
meeting.
 
    HOLDINGS.  Written notice of a meeting or special meeting must be delivered
not less than 10 nor more than 60 days before the date of the meeting to each
shareholder of record of Holdings entitled to vote at the meeting; provided,
however in the event of a merger or consolidation, such notice shall be
delivered not less than 20 days before the meeting.
 
VOTING
 
    TELECOMMUNICATIONS.  The vote of the holders of a majority of the shares
having voting power present in person or represented by proxy at a meeting at
which a quorum is present shall decide any question (including election of
directors) brought before a meeting, unless the question is one which under a
statute, the Articles of Incorporation of Telecommunications or the Bylaws of
Telecommunications, a different vote is required. The TBCA requires the
affirmative vote of at least two-thirds of the outstanding shares entitles to
vote in a merger, exchange, acquisition and a sale, lease or disposition of
substantially all assets (if not in the ordinary course of business).
 
    HOLDINGS.  With respect to any matter other than election of a director, the
affirmative vote of the holders of a majority of the shares entitled to vote on
that matter and represented in person or by proxy at a meeting of shareholders
at which a quorum is present shall decide any question brought before a meeting,
unless otherwise provided by statute, the Articles of Incorporation of Holdings
or the Bylaws of Holdings, a different vote is required. The TBCA requires the
affirmative vote of at least a majority of the outstanding shares entitled to
vote in a merger, exchange, acquisition and a sale, lease or disposition of
substantially all assets (if not in the ordinary course of business). With
respect to election of directors, a plurality of the votes cast by the holders
of shares entitled to vote at a meeting at which a quorum is present will
determine the directors.
 
DIRECTORS
 
    TELECOMMUNICATIONS.  The Telecommunications Board consists of three
directors. If any vacancies occur in the Telecommunications Board by reason
other than increase in the number of directors, a
 
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successor may be elected by either a majority of the remaining directors, though
less than a quorum, or by the shareholders at a special meeting called for that
purpose.
 
    HOLDINGS.  The Holdings Board shall consist of not less than one director.
Directors shall be elected by a plurality of votes cast by holders of shares
entitled to vote in the election of directors at each annual meeting and, if a
vacancy occurs in the Holdings Board by reason of increase in the number of
directors, at a special meeting of shareholders called for that purpose. If any
vacancies occur in the Holdings Board by reason other than increase in the
number of directors, a successor may be elected by a majority of the remaining
directors, though less than a quorum.
 
FIXING RECORD DATE
 
    TELECOMMUNICATIONS.  The Telecommunications Board may fix in advance a
record date for the purpose of determining shareholders entitled to receive
payment of any dividend, such record date not to be more than 50 days prior to
the payment date (and under the TBCA, not less than 10 days prior to the payment
date), or the Telecommunications Board may close the stock transfer books for
such purpose for a period of not more than 50 days prior to the payment date of
such dividend.
 
    HOLDINGS.  The Holdings Board may fix in advance a record date for the
purpose of determining shareholders entitled to receive payment of any dividend,
such record date not to be more than 60 days prior to the payment date and not
less than 10 days prior to the payment date, or the Holdings Board may close the
stock transfer books for such purpose for a period of not more than 60 days
prior to the payment date of such dividend.
 
ANTI-TAKEOVER PROVISION
 
    TBCA Part Thirteen prevents an "affiliated shareholder" (defined generally
as a shareholder owning 20% or more of a corporation's outstanding voting
shares) from engaging in a "business combination" (as defined in the TBCA) with
a Texas corporation for three years following the date such person became an
affiliated shareholder, subject to certain exceptions such as transactions done
with the approval of the board of directors and of the holders of at least
two-thirds of the outstanding voting shares not owned by the interested
shareholder ("Business Combination Laws"). The existence of this provision
generally is expected to have an anti-takeover effect, including possibly
discouraging takeover attempts that might result in a premium over the market
price for the shares of Holdings Common Stock.
 
    TELECOMMUNICATIONS.  Telecommunications has not elected to opt out of the
Business Combinations Laws of the TBCA. The Business Combinations Law has not
applied to Telecommunications as of the date of the Merger Agreement because
Telecommunications is not an "issuing public corporation" as defined in Part
Thirteen of the TBCA.
 
    HOLDINGS.  Holdings has expressly elected not to be governed by Part
Thirteen of the TBCA. Therefore, if Holdings qualifies as "an issuing public
corporation" under Part Thirteen of the TBCA and a shareholder of Holdings who
owns 20% or more of Holdings enters into certain mergers, sales of assets,
reclassifications and other transactions with Holdings, the approval of
two-thirds of the nonaffiliated shareholders will not need to be obtained.
 
         COMPARISON OF PARTNERSHIP INTERESTS AND HOLDINGS COMMON STOCK
 
    If the Interest Exchange is consummated, tendering holders of Partnership
Interests whose valid tenders are accepted will receive shares of Holdings
Common Stock, and the right of such shareholders will be governed by Texas state
law, the Articles of Incorporation of Holdings and the Bylaws of Holdings. The
following summary discusses the material differences between ownership of
Partnership Interests and ownership of Holdings Common Stock and the effects
relating thereto.
 
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ISSUER
 
    PARTNERSHIP INTERESTS
 
    The Partnership, a Texas limited partnership, is the issuer.
 
    HOLDINGS COMMON STOCK
 
    Holdings, a Texas corporation, is the issuer.
 
TAXATION
 
    PARTNERSHIP INTERESTS
 
    As a result of the Partnership's election to be taxed as a corporation for
federal income tax purposes as of January 1, 1998, the Partnership is a taxable
entity with respect to its income after allowable deductions and credits.
Partners will have taxable income from the Partnership's operations only to the
extent that taxable dividends and other distributions are declared and paid by
the Partnership. See "The Transaction--Certain United States Federal Income Tax
Consequences of the Interest Exchange."
 
    HOLDINGS COMMON STOCK
 
    Holdings is a taxable entity with respect to its income after allowable
deductions and credits. Shareholders will have taxable income from Holding's
operations only to the extent that taxable dividends and other distributions are
declared and paid on Holdings Common Stock. See "The Transaction--Certain United
States Federal Income Tax Consequences of the Mergers."
 
    No portion of the earnings of, or any dividends received from, Holdings will
constitute unrelated business taxable income to tax-exempt shareholders, except
to the extent their investment in stock of Holdings is considered debt-financed.
See "The Transaction--Certain United States Federal Income Tax Consequences of
the Mergers."
 
DISTRIBUTIONS AND DIVIDENDS
 
    PARTNERSHIP INTERESTS
 
    The Partnership is required under the Agreement of Limited Partnership of
the Partnership (the "Partnership Agreement") to distribute Cash Flow (as
defined below) from activities arising in the ordinary course of business or
from a major capital event arising other than in the ordinary course of
business. Under the Partnership Agreement, Cash Flow is distributed as follows:
(i) first to guarantors under the Partnership Agreement, (ii) next, to the
partners pro rata in accordance with their respective Partnership Interests
until the guarantors (other than Mark Langdale) have been released, and (iii)
thereafter, 1% to the General Partner, 19.5% to Jere W. Thompson, Jr., 4.5% to
Mark Langdale and the remainder among the partners (including Messrs. Thompson
and Langdale) pro rata in accordance with their respective Partnership
Interests. Under the Partnership Agreement, "Cash Flow" means the amount by
which the aggregate cash receipts of the Partnership from any source exceed the
sum of the cash expenditures of the Partnership plus a cash reserve in the
amount determined by the General Partner to be sufficient to meet the working
capital requirements of the Partnership.
 
    HOLDINGS COMMON STOCK
 
    The Board of Directors of Holdings has the discretion to determine whether
or not and when to declare and pay dividends and the amount of any dividend.
Holders of Holdings Common Stock will have no contractual right to receive
dividends.
 
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MANAGEMENT
 
    PARTNERSHIP INTERESTS
 
    The business and affairs of the Partnership are managed by the General
Partner. The Partnership Agreement does not expressly specify any actions that
may be taken by the General Partner only with the consent of the Limited
Partners.
 
    HOLDINGS COMMON STOCK
 
    The business and affairs of Holdings will be managed by or under the
direction of the Holdings Board. The holders of Holdings Common Stock will have
the ability to elect members of the Holdings Board with a plurality of the votes
cast for such election and to remove the Holdings Board with a majority vote of
the Common Stock outstanding and entitled to vote.
 
VOTING RIGHTS
 
    PARTNERSHIP INTERESTS
 
    Under the Partnership Agreement, Limited Partners have voting rights with
respect to amendments to the Partnership Agreement. The General Partner and
partners owning more than 50% of the Partnership Interests must approve the
amendment.
 
    HOLDINGS COMMON STOCK
 
    Holders of Holdings Common Stock will have the right to vote on all matters
on which shareholders must be permitted to vote under Texas law and which affect
the structure of Holdings, including election of directors, mergers,
acquisitions, share exchanges, conversions, dissolution, sale of all or
substantially all of the assets of Holdings not in the ordinary course of
business, and amendments to the articles of incorporation or bylaws.
 
    Each share of Holdings Common Stock entitles its holder to cast one vote on
each matter presented to shareholders.
 
    Except for election of directors and voting on matters, if any, under which
Texas law requires the affirmative vote of two-thirds of the shareholders
entitled to vote, approval of any matter submitted to shareholders generally
requires the affirmative vote of the holders of a majority of the Common Stock
outstanding and entitled to vote.
 
    Amendment of the articles of incorporation requires the adoption of a
resolution of the Holdings Board and the affirmative vote of the holders of a
majority of the Common Stock outstanding and entitled to vote. Amendments to the
bylaws require either a resolution of the Holdings Board or the affirmative vote
of the majority of the shareholders entitled to vote thereon. If shareholders
adopt a bylaw with the stipulation that only the shareholders may amend such
bylaw, the Holdings Board does not have the authority to amend such bylaw.
 
    A merger, share exchange, acquisition, conversion and sale of substantially
all assets not in the ordinary course of business requires the adoption of a
resolution by the Holdings Board and the affirmative vote of the holders of a
majority of the Common Stock outstanding and entitled to vote, or the written
consent of all shareholders.
 
    The dissolution of Holdings requires either the adoption of a resolution by
the Holdings Board with the approval of the holders of a majority of the Common
Stock outstanding and entitled to vote.
 
    Shareholders may act by written consent in lieu of a meeting with a number
of votes sufficient for such action.
 
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<PAGE>
SPECIAL MEETINGS
 
    PARTNERSHIP INTERESTS
 
    The Partnership Agreement does not address the issue of special meetings.
The General Partner, as part of its management duties, may call a special
meeting. Texas law does not prohibit a limited partner or limited partners from
calling meetings. Under Texas law, a limited partner will not be considered as
participating in the management of the Partnership by virtue of having called a
meeting or meetings of partners.
 
    HOLDINGS COMMON STOCK
 
    Shareholders are permitted to call a special meeting of shareholders or
require that the board of directors call a special meeting of shareholders if
such meeting is called or requested by holders of at least 10% of outstanding
Holdings Common Stock.
 
CONVERSION RIGHTS
 
    PARTNERSHIP INTERESTS
 
    The Partnership Interests are not convertible into any other securities.
 
    HOLDINGS COMMON STOCK
 
    Shares of Holdings Common Stock are not convertible into any other
securities.
 
LIQUIDATION RIGHTS
 
    PARTNERSHIP INTERESTS
 
    In the event of the liquidation of the Partnership, the assets of the
Partnership remaining shall be applied in the following order of priority: (i)
to satisfy all debts and liabilities of the Partnership; (ii) to set up a
reserve account which the General Partner deems reasonably necessary for
contingent or unforseen liabilities or obligations of the Partnership; and (iii)
to the partners in accordance with each partner's interest in the Partnership.
 
    HOLDINGS COMMON STOCK
 
    In the event of a liquidation of Holdings, the holders of Holdings Common
Stock would be entitled to share ratably in any assets remaining after
satisfaction of obligations to creditors and any liquidation preferences on any
series of preferred stock of Holdings that may then be outstanding.
 
RIGHT TO COMPEL DISSOLUTION
 
    PARTNERSHIP INTERESTS
 
    Under the Partnership Agreement, the General Partner may compel dissolution
of the Partnership. Under Texas law, all partners may compel dissolution by
unanimous written consent. The Limited Partners acting alone are not expressly
granted the authority under the Partnership Agreement to compel dissolution.
 
    HOLDINGS COMMON STOCK
 
    Under Texas law, holders of Holdings Common Stock may compel dissolution of
Holdings, absent prior action by the board of directors, only if all holders
consent in writing. A plan of dissolution adopted by the board of directors must
be approved by the holders of a majority of the Holdings Common Stock
outstanding and entitled to vote.
 
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LIMITED LIABILITY
 
    PARTNERSHIP INTERESTS
 
    In general, holders of Partnership Interests are limited partners in a Texas
limited partnership, and do not have personal liability for obligations of the
Partnership.
 
    HOLDINGS COMMON STOCK
 
    Shares of Holdings Common Stock will be fully paid and nonassessable.
Shareholders generally will not have personal liability for obligations of
Holdings.
 
LIQUIDITY AND MARKETABILITY
 
    PARTNERSHIP INTERESTS
 
    The Partnership Interests are not freely transferable, except for a transfer
to another partner, unless the (i) written consent of the General Partner is
obtained and (ii) the Partnership Interests are first offered to the other
partners pursuant to the right of first refusal contained in the Partnership
Agreement.
 
    HOLDINGS COMMON STOCK
 
    The Holdings Common Stock will be freely transferable and application has
been made for listing the Holdings Common Stock on the Nasdaq National Market
and subject to satisfaction of applicable securities laws.
 
CONTINUITY OF EXISTENCE
 
    PARTNERSHIP INTERESTS
 
    The Partnership Agreement provides for the Partnership to continue in
existence until December 31, 2025, unless earlier terminated in accordance with
the Partnership Agreement.
 
    HOLDINGS COMMON STOCK
 
    Holdings' Articles of Incorporation provides for perpetual existence,
subject to Texas law.
 
FINANCIAL REPORTING
 
    PARTNERSHIP INTERESTS
 
    The Partnership provides annual reports to its Limited Partners at the end
of each fiscal year and notifies limited partners of any significant development
materially adversely affecting the Partnership.
 
    HOLDINGS COMMON STOCK
 
    Holdings will be subject to the reporting requirements of the Exchange Act
and will file annual and quarterly reports thereunder. Holdings also will
provide annual and quarterly reports to its shareholders.
 
CERTAIN LEGAL RIGHTS
 
    PARTNERSHIP INTERESTS
 
    Texas law allows a limited partner to institute legal action in a court of
competent jurisdiction on behalf of the Partnership (a partnership derivative
action) to recover a judgment in the Partnership's favor where the General
Partner has failed to institute the action.
 
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<PAGE>
    HOLDINGS COMMON STOCK
 
    Texas law affords shareholders of Holdings rights to bring shareholder
derivative actions when, after the shareholder has made proper demand to the
Holdings Board, the Holdings Board has failed to institute an action against
third parties or directors of Holdings.
 
RIGHT TO LIST OF HOLDERS; INSPECTION OF BOOKS AND RECORDS
 
    PARTNERSHIP INTERESTS
 
    Upon reasonable demand, at the Limited Partner's own expense and for a
purpose reasonably related to his interest in the Partnership, a Limited Partner
may have access, at reasonable times, to certain information regarding the
status of the business and financial condition of the Partnership, tax returns,
governing instruments of the Partnership and a current list of the partners of
the Partnership.
 
    HOLDINGS COMMON STOCK
 
    Under Texas law, any person who shall have been a shareholder for at least
six (6) months immediately preceding the demand or shall be the holder of at
least five percent (5%) of the outstanding shares of the corporation, upon
written request, at reasonable times and for a proper purpose reasonably related
to a shareholder's interest as a shareholder, shall have the right to examine
and copy the corporation's books and records of account, minutes, and share
transfer records.
 
                     DESCRIPTION OF HOLDINGS CAPITAL STOCK
 
    The summary of the terms of the capital stock of Holdings set forth below
does not purport to be complete and is subject to and qualified in its entirety
by reference to the Holdings Articles of Incorporation and the Holdings Bylaws.
Copies of the Holdings Articles of Incorporation, in substantially the form to
be adopted prior to the Effective Time, and the Holdings Bylaws are attached to
this Joint Proxy Statement/Prospectus as Appendix III and Appendix IV,
respectively.
 
AUTHORIZED CAPITAL STOCK
 
    Under the Holdings Articles of Incorporation, the total number of shares of
all classes of stock that Holdings will have authority to issue is 220,000,000
shares, of which 200,000,000 are shares of Holdings Common Stock and 20,000,000
are shares of Holdings Preferred Stock.
 
COMMON STOCK
 
    Each share of Holdings Common Stock has identical rights and privileges in
every respect. The holders of Holdings Common Stock are entitled to vote upon
all matters submitted to a vote of the stockholders of Holdings and are entitled
to one vote for each share of Holdings Common Stock held.
 
    Subject to the prior rights and preferences, if any, applicable to shares of
Holdings Preferred Stock or any series thereof, the holders of Holdings Common
Stock are entitled to receive such dividends (payable in cash, stock or
otherwise) as may be declared thereon by the Holdings Board at any time and from
time to time out of any funds of Holdings legally available therefor.
 
    In the event of any voluntary or involuntary liquidation, dissolution or
winding-up of Holdings, after distribution in full of the preferential amounts,
if any, to be distributed to the holders of Holdings Preferred Stock or any
series thereof, the holders of Holdings Common Stock will be entitled to receive
all of the remaining assets of Holdings available for distribution to its
stockholders, ratably in proportion to the number of shares of Holdings Common
Stock held by them.
 
    The shares of Holdings Common Stock, when issued to holders of outstanding
shares of IWL Common Stock or Telecommunications Common Stock in connection with
the Mergers, will be validly issued, fully paid and non-assessable.
 
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    Holders of Holdings Common Stock will have no preferences or any preemptive,
conversion or exchange rights.
 
PREFERRED STOCK
 
    The Holdings Board is authorized at any time and from time to time to
provide for the issuance of shares of Holdings Preferred Stock in one or more
series, and to fix for each such series such voting powers, full or limited, or
no voting powers, and such designations, preferences and relative,
participating, optional or other special rights and such qualifications,
limitations or restrictions thereof as are set forth in a resolution providing
for the issuance of such series adopted by the Holdings Board. The Holdings
Board could authorize the issuance of shares of Holdings Preferred Stock with
terms and conditions which could discourage a takeover or other transaction that
holders of some or a majority of shares of Holdings Common Stock might believe
to be in their best interests or in which such holders might receive a premium
for their shares of stock over the then market price of such shares. As of the
date hereof, no shares of Holdings Preferred Stock are outstanding and the
Holdings Board has no present intention to issue any shares of Holdings
Preferred Stock after the Effective Time.
 
PREEMPTIVE RIGHTS
 
    No holder of any shares of any class of stock of Holdings will have any
preemptive or preferential right to acquire or subscribe for any unissued shares
of any class of stock or any authorized securities convertible into or carrying
any right, option or warrant to subscribe for or acquire shares of any class of
stock.
 
TRANSFER AGENT AND REGISTRAR
 
    The principal transfer agent and registrar for Holdings Common Stock will be
designated by IWL prior to the consummation of the Mergers.
 
CERTAIN ANTI-TAKEOVER EFFECTS
 
    Upon consummation of the Transaction (based on the number of shares of
common stock of IWL and Telecommunications issued and outstanding as of May 31,
1998), there will be 171,089,778 authorized and unissued shares of Common Stock
and 20,000,000 authorized and unissued shares of Preferred Stock of Holdings.
The existence of authorized but unissued Common Stock and Preferred Stock may
enable the Board of Directors to render more difficult or to discourage an
attempt to obtain control of Holdings by means of a merger, tender offer, proxy
solicitation or otherwise. Holdings is also subject to prior regulatory approval
by the FCC and various state regulatory agencies for a transfer of control of
Holdings or for the assignment of Holdings's (or its subsidiaries') intrastate
certification authority and its international authority. The 1934 Communications
Act provides that non-U.S. citizens, foreign governments or their
representatives or corporations organized under the laws of a foreign country
may not own in the aggregate more than 20% of a company that owns common carrier
radio licenses such as IWL. In addition, because Holdings (or its subsidiaries)
holds FCC authority to provide international service, the FCC will scrutinize an
ownership interest in Holdings of greater than 25%, or a controlling interest at
any level, by a dominant foreign carrier. International carriers, such as
Holdings, must notify the FCC 60 days in advance of an acquisition by a foreign
carrier or by an entity that controls a foreign carrier of a 25% or greater or a
controlling interest in such carriers. However, new rules allow for up to 100%
indirect ownership of wireless licenses by foreign interests from countries that
have participated in the 1997 WTO Agreement on Basic Telecommunications
Services, in which the United States and 68 other countries committed to open
their telecommunications markets to competition starting in 1998. Furthermore,
the Indenture will provide for a mandatory purchase of the Notes upon a change
of control and the Credit Facility and any indenture governing the issuance of
indebtedness is expected to provide that an event of default or redemption event
thereunder will occur if all or a controlling interest in Holdings' capital
stock is sold, assigned or otherwise transferred. Furthermore, the Credit
Facility is expected to provide that an event of default thereunder will occur
if all or a controlling interest in Holdings's capital stock is sold, assigned
or otherwise transferred.
 
                                      180
<PAGE>
Any of the foregoing factors could have the effect of delaying, deferring or
preventing a change of control of Holdings. The Articles provide that Article
13.03 of the Texas Business Corporation Act, which includes statutory
anti-takeover measures, will not apply to Holdings. See "Risk Factors - Certain
Anti-Takeover Effects."
 
                                 LEGAL MATTERS
 
    The validity of the Holdings Common Stock to be issued in connection with
the Transaction will be passed upon by Munsch Hardt Kopf Harr & Dinan, P.C.,
Dallas, Texas. Matters entered under the heading "The Transaction--Certain
United States Federal Income Tax Consequences of the Mergers" have been passed
upon by Munsch Hardt and Hughes & Luce and are included herein in reliance upon
the authority of such firms as experts. Matters entered under the heading "The
Transaction--Certain United States Federal Income Tax Consequences of the
Interest Exchange" have been passed upon by Hughes & Luce and are included
herein in reliance upon the authority of such firm as experts.
 
                                    EXPERTS
 
    The consolidated financial statements of IWL at December 31, 1997 and June
30, 1997 and 1996 and for the six months ended December 31, 1997 and for each of
the three years in the period ended June 30, 1997 included herein and made a
part of the Registration Statement of which this Joint Proxy Statement/
Prospectus is a part, have been audited by KPMG Peat Marwick LLP, independent
certified public accountants, as set forth in their report thereon included
elsewhere herein. Such consolidated financial statements of IWL and the
consolidated balance sheet of Holdings are included herein in reliance upon such
reports given upon the authority of such firm as experts in accounting and
auditing.
 
    The balance sheet of Holdings as December 31, 1997, and the financial
statements of Telecommunications and the Partnership at December 31, 1996 and
for the years ended December 31, 1995 and 1996, included herein and made part of
the Registration Statement of which this Joint Proxy Statement/ Prospectus is a
part, have been audited by Burds, Reed & Mercer, P.C., independent certified
public accountants, as set forth in their reports therein included elsewhere
herein. Such financial statements of Telecommunications and the Partnership are
included herein in reliance upon such reports given upon the authority of such
firm as experts in accounting and auditing.
 
    The financial statements of Telecommunications and the Partnership at
December 31, 1997 and for the year ended December 31, 1997, included herein and
made part of the Registration Statement of which this Joint Proxy
Statement/Prospectus is a part, have been audited by KPMG Peat Marwick, LLP,
independent certified public accountants, as set forth in their reports thereon
included elsewhere herein. The consolidated balance sheet of Holdings as of
March 31, 1998 has also been audited by KPMG Peat Marwick LLP, as set forth in
their report therein also included elsewhere herein. Such financial statements
of Holdings, Telecommunications, and the Partnership are included herein in
reliance upon such reports given upon the authority of such firm as experts in
accounting and auditing.
 
    It is expected that representatives of KPMG Peat Marwick LLP will be present
at the Special Meetings to respond to appropriate questions of shareholders and
to make a statement if they desire.
 
                                  ACCOUNTANTS
 
    On January 20, 1998, Burds, Reed & Mercer, P.C. resigned as the independent
certified public accountants of Telecommunications and the Partnership. On the
same day, the Board of Directors of Telecommunications and the Board of
Directors of the general partner of the Partnership approved the appointment of
KPMG Peat Marwick LLP to replace Burds, Reed & Mercer, P.C. as independent
certified public accountants. As a result, Burds, Reed & Mercer, P.C. did not
perform the audit of the financial statements of Telecommunications or the
Partnership for the fiscal year ended December 31, 1997. The accountant's report
on the financial statements for the fiscal year ended December 31, 1996 did not
contain any adverse opinion or disclaimer of opinion or qualification or
modification as to uncertainty,
 
                                      181
<PAGE>
audit scope, or accounting principles. During Telecommunications' and the
Partnership's fiscal years ended December 31, 1995 and 1996, and through the
date of their replacement, there have been no disagreements between
Telecommunications or the Partnership and Burds, Reed & Mercer, P.C. on any
matters of accounting principles or practices, financial statement disclosure,
or auditing scope or procedures and there were no "reportable events," as that
term is defined in item 304(a)(1)(v) of Regulation S-K under the Securities Act.
 
                          FUTURE STOCKHOLDER PROPOSALS
 
    The timing of the first annual meeting of the public stockholders of
Holdings will depend upon when the Mergers are consummated.
 
    If the Mergers are not completed by the third quarter of 1998, IWL expects
to hold its annual meeting of stockholders in the fourth quarter of 1998.
Commission rules set forth standards as to what stockholder proposals are
required to be included in a proxy statement. Any IWL shareholder who intends to
submit a proposal for inclusion in the proxy materials for the 1998 annual
meeting of IWL must submit such proposal to the Secretary of IWL by       .
 
                                      182
<PAGE>
                          INDEPENDENT AUDITORS' REPORT
 
The Board of Directors
CapRock Telecommunications Corp.
(formerly CapRock Communications Corp.)
 
    We have audited the accompanying balance sheet of CapRock Telecommunications
Corp. (formerly CapRock Communications Corp.) as of December 31, 1997, and the
related statements of operations, stockholders' equity, and cash flows for the
year then ended. These financial statements are the responsibility of the
Company's management. Our responsibility is to express an opinion on the
financial statements based on our audit.
 
    We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.
 
    In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of CapRock Telecommunications
Corp. (formerly CapRock Communications Corp.) as of December 31, 1997, and the
results of its operations and its cash flows for the year then ended in
conformity with generally accepted accounting principles.
 
                                          KPMG Peat Marwick LLP
 
Dallas, Texas
February 11, 1998, except as to note 13,
  which is as of February 16, 1998
 
                                      F-1
<PAGE>
                          INDEPENDENT AUDITORS' REPORT
 
The Board of Directors
CapRock Telecommunications Corp.:
(formerly CapRock Communications Corp.)
 
    We have audited the accompanying balance sheet of CapRock Telecommunications
Corp. (formerly CapRock Communications Corp.), as of December 31, 1996, and the
related statements of operations, stockholders' equity, and cash flows for the
years ended December 31, 1995 and 1996. These financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements based on our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
    In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of CapRock Telecommunications
Corp. (formerly CapRock Communications Corp.) as of December 31, 1996, and the
results of its operations and its cash flows for the years ended December 31,
1995 and 1996 in conformity with generally accepted accounting principles.
 
                                          Burds, Reed and Mercer, P.C.
 
Dallas, Texas
May 28, 1997
 
                                      F-2
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                                 BALANCE SHEETS
 
<TABLE>
<CAPTION>
                                                                              DECEMBER 31,
                                                                       ---------------------------
                                                                           1996          1997
                                                                       ------------  -------------    MARCH 31,
                                                                                                    -------------
                                                                                                        1998
                                                                                                    -------------
                                                                                                     (UNAUDITED)
<S>                                                                    <C>           <C>            <C>
                                                     ASSETS
 
Current assets:
  Cash...............................................................  $    --       $       2,162  $    --
  Accounts receivable and unbilled services, less allowance for
    doubtful accounts of $324,703, $1,640,722 and $675,408 at
    December 31, 1996 and 1997, and March 31, 1998, respectively.....     3,514,390      8,325,352      9,318,928
  Prepaid expenses and other.........................................       225,996        571,650        447,117
  Deferred income taxes (note 8).....................................       735,430        624,095        624,095
                                                                       ------------  -------------  -------------
    Total current assets.............................................     4,475,816      9,523,259     10,390,140
Property and equipment, net (note 2).................................     2,857,622      3,692,670      4,162,199
Other assets.........................................................        22,125        110,741       --
                                                                       ------------  -------------  -------------
    Total assets.....................................................  $  7,355,563  $  13,326,670  $  14,552,339
                                                                       ------------  -------------  -------------
                                                                       ------------  -------------  -------------
 
                                      LIABILITIES AND STOCKHOLDERS' EQUITY
 
Current liabilities:
  Accounts payable...................................................  $  3,786,838  $   7,320,590  $   7,242,599
  Bank line of credit (note 4).......................................       814,422      1,152,329      1,642,290
  Accrued liabilities (note 6).......................................       376,350        534,323        501,503
  Current installments of obligations under capital lease (note 3)...       212,695        239,672        246,934
  Note payable (note 4)..............................................       521,835       --             --
  Income taxes payable (note 8)......................................       --             324,550        642,198
  Unearned revenue...................................................       111,352        527,774        153,089
                                                                       ------------  -------------  -------------
    Total current liabilities........................................     5,823,492     10,099,238     10,428,613
Deferred income taxes (note 8).......................................       401,270        527,394        527,394
Obligations under capital leases and other long-term debt (notes 3
  and 4).............................................................       719,993        452,938        431,135
                                                                       ------------  -------------  -------------
    Total liabilities................................................     6,944,755     11,079,570     11,387,142
Stockholders' equity:
  Common stock, no par value; 100,000,000 shares authorized,
    10,398,954 shares issued and outstanding; 9,680 shares held in
    treasury.........................................................     1,041,173      1,458,273      1,458,273
  Unearned compensation (note 7).....................................       --            (396,244)      (375,388)
  Retained earnings (accumulated deficit)............................      (630,365)     1,185,071      2,082,312
                                                                       ------------  -------------  -------------
                                                                            410,808      2,247,100      3,165,197
Commitments (notes 3 and 9)
                                                                       ------------  -------------  -------------
    Total liabilities and stockholder's equity.......................  $  7,355,563  $  13,326,670  $  14,552,339
                                                                       ------------  -------------  -------------
                                                                       ------------  -------------  -------------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-3
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                            STATEMENTS OF OPERATIONS
 
<TABLE>
<CAPTION>
                                                                                      THREE MONTHS ENDED MARCH
                                                 YEARS ENDED DECEMBER 31,                        31,
                                        -------------------------------------------  ---------------------------
                                            1995           1996           1997           1997          1998
                                        -------------  -------------  -------------  ------------  -------------
<S>                                     <C>            <C>            <C>            <C>           <C>
                                                                                             (UNAUDITED)
Telecommunication services............  $  13,439,658  $  23,173,904  $  46,744,549  $  8,696,632  $  15,770,312
Cost of revenues......................     11,042,775     18,941,122     35,776,468     7,117,540     11,802,008
                                        -------------  -------------  -------------  ------------  -------------
    Gross profit......................      2,396,883      4,232,782     10,968,081     1,579,092      3,968,304
Operating expenses:
  Selling, general and administrative
    expenses..........................      2,600,682      3,710,671      7,047,418     1,487,354      2,175,885
  Depreciation and amortization.......        333,282        478,506        694,475       142,123        231,420
                                        -------------  -------------  -------------  ------------  -------------
    Income (loss) from operations.....       (537,081)        43,605      3,226,188       (50,385)     1,560,999
Interest expense......................       (240,370)      (314,833)      (310,543)      (77,283)       (86,110)
                                        -------------  -------------  -------------  ------------  -------------
    Income (loss) before income
      taxes...........................       (777,451)      (271,228)     2,915,645      (127,668)     1,474,889
Income tax expense (benefit) (note
  8)..................................       (245,600)       (88,560)     1,100,209       (65,014)       577,648
                                        -------------  -------------  -------------  ------------  -------------
    Net income (loss).................  $    (531,851) $    (182,668) $   1,815,436  $    (62,654) $     897,241
                                        -------------  -------------  -------------  ------------  -------------
                                        -------------  -------------  -------------  ------------  -------------
Net income (loss) per share:
  Basic...............................  $        (.05) $        (.02) $        0.17  $       (.01) $         .09
                                        -------------  -------------  -------------  ------------  -------------
                                        -------------  -------------  -------------  ------------  -------------
  Diluted.............................  $        (.05) $        (.02) $        0.17  $       (.01) $         .08
                                        -------------  -------------  -------------  ------------  -------------
                                        -------------  -------------  -------------  ------------  -------------
Weighted average shares outstanding:
  Basic...............................      9,717,030     10,398,954     10,398,954    10,398,954     10,398,954
  Diluted.............................      9,717,030     10,398,954     10,581,435    10,398,954     10,581,435
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-4
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                       STATEMENTS OF STOCKHOLDERS' EQUITY
 
<TABLE>
<CAPTION>
                                                                                              RETAINED
                                                    COMMON                                    EARNINGS       TOTAL
                                                    SHARES        COMMON       UNEARNED     (ACCUMULATED  STOCKHOLDERS'
                                                    ISSUED        STOCK      COMPENSATION     DEFICIT)       EQUITY
                                                 ------------  ------------  -------------  ------------  ------------
<S>                                              <C>           <C>           <C>            <C>           <C>
Balance at December 31, 1994...................     9,671,198  $    291,173   $   --         $   84,154    $  375,327
Issuance of common stock upon conversion of
  note payable (note 4)........................       727,756       750,000       --             --           750,000
Net loss.......................................       --            --            --           (531,851)     (531,851)
                                                 ------------  ------------  -------------  ------------  ------------
Balance at December 31, 1995...................    10,398,954     1,041,173       --           (447,697)      593,476
Net loss.......................................       --            --            --           (182,668)     (182,668)
                                                 ------------  ------------  -------------  ------------  ------------
Balance at December 31, 1996...................    10,398,954     1,041,173       --           (630,365)      410,808
Deferred compensation from compensatory stock
  option grants................................       --            417,100      (417,100)       --            --
Amortization of deferred compensation..........       --            --             20,856        --            20,856
Net income.....................................       --            --            --          1,815,436     1,815,436
                                                 ------------  ------------  -------------  ------------  ------------
Balance at December 31, 1997...................    10,398,954     1,458,273      (396,244)    1,185,071     2,247,100
Amortization of deferred compensation..........       --            --             20,856        --            20,856
Net income (unaudited).........................       --            --            --            897,241       897,241
                                                 ------------  ------------  -------------  ------------  ------------
Balance at March 31, 1998 (unaudited)..........    10,398,954  $  1,458,273   $  (375,388)   $2,082,312    $3,165,197
                                                 ------------  ------------  -------------  ------------  ------------
                                                 ------------  ------------  -------------  ------------  ------------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-5
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                            STATEMENTS OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                                                          THREE MONTHS ENDED
                                                        YEARS ENDED DECEMBER 31,               MARCH 31,
                                                  ------------------------------------  -----------------------
                                                     1995        1996         1997         1997        1998
                                                  ----------  -----------  -----------  ----------  -----------
                                                                                              (UNAUDITED)
<S>                                               <C>         <C>          <C>          <C>         <C>
Cash flows from operating activities:
  Net income (loss).............................  $ (531,851) $  (182,668) $ 1,815,436  $  (62,654) $   897,241
  Adjustments to reconcile net income (loss) to
    net cash provided by operating activities:
    Depreciation and amortization...............     333,282      478,506      694,475     142,123      142,123
    Amortization of discount on notes payable...       6,930        7,338        7,338      --          --
    Compensation expense related to stock option
      grants....................................      --          --            20,856      --           20,856
    Deferred income taxes.......................    (245,600)     (88,560)     237,459     (65,013)     --
    Allowance for doubtful accounts.............      67,698      356,223    1,316,019     237,831      164,940
    Changes in operating assets and liabilities:
      Accounts receivable.......................  (1,493,899)  (1,481,237)  (6,126,981) (2,099,443)  (1,158,516)
      Prepaid expenses and other................     205,499     (172,231)    (463,585)    171,011      235,274
      Accounts payable and accrued
        liabilities.............................   1,937,495    1,528,907    3,849,004   1,217,977      (68,089)
      Income taxes payable......................      --          --           324,550      --          317,648
      Unearned revenue..........................      16,097       66,375      416,422     385,337     (374,685)
                                                  ----------  -----------  -----------  ----------  -----------
        Net cash provided by (used in) operating
          activities............................     295,651      512,653    2,090,993     (72,831)     176,792
                                                  ----------  -----------  -----------  ----------  -----------
Cash flows from investing activities--purchases
  of property and equipment.....................    (696,407)  (1,118,357)  (1,500,208)   (147,796)    (611,652)
                                                  ----------  -----------  -----------  ----------  -----------
Cash flows from financing activities:
  Proceeds from issuance of long-term debt......     196,045      200,000      --           --          --
  Principal payments on notes payable...........    (118,526)    (305,602)    (713,835)   (200,000)     --
  Proceeds from line of credit..................      --       18,564,432   40,742,755   7,591,860   14,946,744
  Principal payments on line of credit..........      --      (17,750,010) (40,404,848) (7,120,416) (14,456,693)
  Principal payments under capital lease
    obligations.................................      --         (128,324)    (212,695)    (50,817)     (57,353)
                                                  ----------  -----------  -----------  ----------  -----------
        Net cash provided by (used in) financing
          activities............................      77,519      580,496     (588,623)    220,627      432,698
                                                  ----------  -----------  -----------  ----------  -----------
Net increase (decrease) in cash.................    (323,237)     (25,208)       2,162      --           (2,162)
Cash at beginning of period.....................     348,445       25,208      --           --            2,162
                                                  ----------  -----------  -----------  ----------  -----------
Cash at end of period...........................  $   25,208  $   --       $     2,162  $   --      $   --
                                                  ----------  -----------  -----------  ----------  -----------
                                                  ----------  -----------  -----------  ----------  -----------
Supplemental disclosure of cash flow
  information:
  Cash paid for interest........................  $  138,535  $   251,786  $   338,151  $   93,677  $    67,610
                                                  ----------  -----------  -----------  ----------  -----------
                                                  ----------  -----------  -----------  ----------  -----------
  Cash paid for income taxes....................  $   --      $   --       $   538,200  $   --      $   260,000
                                                  ----------  -----------  -----------  ----------  -----------
                                                  ----------  -----------  -----------  ----------  -----------
Noncash financing activities:
  Network equipment acquired under capital
    lease.......................................  $1,732,000  $   --       $   --       $   --      $   --
                                                  ----------  -----------  -----------  ----------  -----------
                                                  ----------  -----------  -----------  ----------  -----------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-6
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                         NOTES TO FINANCIAL STATEMENTS
              (INFORMATION AS OF MARCH 31, 1998 AND FOR THE THREE
               MONTHS ENDED MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
(1) GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
    (A) GENERAL INFORMATION
 
    CapRock Telecommunications Corp. (formerly CapRock Communications Corp.)
("the Company") is a Texas corporation formed in 1991. The Company is a
facilities-based provider of voice, data and broadband services to interexchange
carriers and businesses and consumers. The Company's revenues are derived from
the sale of telecommunication services to interexchange and other
telecommunications providers and from the sale of voice and data services to
businesses and consumers. The Company extends credit to customers on an
unsecured basis with the risk of loss limited to outstanding amounts. The
Company markets its services through its internal sales representatives and a
network of independent agents.
 
    The Company declared a 2,420 to 1 stock split effective October 31, 1997.
The financial statements, including all references to the number of shares of
common stock and all per share information, have been adjusted to reflect the
stock dividend on a retroactive basis.
 
    (B) PROPERTY AND EQUIPMENT
 
    Property and equipment are recorded at cost and are depreciated over
estimated lives ranging from three to fifteen years using the straight-line
method. Property and equipment held under capital leases and leasehold
improvements are amortized on the straight-line method over the shorter of the
lease term or estimated useful life of the related asset.
 
    (C) REVENUES, COST OF REVENUES AND COMMISSIONS EXPENSE
 
    Revenues from telecommunication services are recognized when customer calls
are completed. Cost of revenues is based primarily on the direct costs
associated with owned and leased transmission capacity and the cost of
transmitting and terminating traffic on other carriers' facilities. Commissions
paid to acquire customer call traffic are expensed in the period when associated
call revenues are recognized.
 
    (D) BUSINESS AND CREDIT CONCENTRATION
 
    Financial instruments which potentially expose the Company to a
concentration of credit risk, as defined by SFAS No. 105, DISCLOSURE OF
INFORMATION ABOUT FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK AND
FINANCIAL INSTRUMENTS WITH CONCENTRATIONS OF CREDIT RISK, consist primarily of
accounts receivable from carrier and commercial customers.
 
    (E) INCOME TAXES
 
    Income taxes are accounted for under the asset and liability method.
Deferred tax assets and liabilities are recognized for the future tax
consequences attributable to differences between the financial statement
carrying amounts of existing assets and liabilities and their respective tax
bases and operating loss and tax credit carryforwards. Deferred tax assets and
liabilities are measured using enacted tax rates expected to apply to taxable
income in the years in which those temporary differences are expected to be
recovered or settled. The effect on deferred tax assets and liabilities of a
change in tax rates is recognized in income in the period that includes the
enactment date.
 
                                      F-7
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                         NOTES TO FINANCIAL STATEMENTS
 
(1) GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    (F) STOCK-BASED COMPENSATION
 
    The Company accounts for its stock-based employee compensation plan using
the intrinsic value based method prescribed by Accounting Principles Board
Opinion No. 25, ACCOUNTING FOR STOCK ISSUED TO EMPLOYEES, (APB No. 25). As such,
compensation expense is recorded on the date of grant to the extent the current
market price of the underlying stock exceeds the exercise price. The Company has
provided pro forma disclosures as if the fair value-based method of accounting
for these plans, as prescribed by Statement of Financial Accounting Standards
(SFAS) No. 123, ACCOUNTING FOR STOCK-BASED COMPENSATION (SFAS No. 123), had been
applied.
 
    (G) IMPAIRMENT OF LONG-LIVED ASSETS
 
    The Company reviews long-lived assets and certain identifiable intangibles
for impairment whenever events or changes in circumstances indicate that the
carrying amount of an asset may not be recoverable. Recoverability of assets to
be held and used is measured by a comparison of the carrying amount of an asset
to future net cash flows expected to be generated by the asset. If such assets
are considered to be impaired, the impairment to be recognized is measured by
the amount by which the carrying amount of the assets exceed the fair value of
the assets. Assets to be disposed of are reported at the lower of the carrying
amount or fair value less costs to sell.
 
    (H) FAIR VALUE OF FINANCIAL INSTRUMENTS
 
    The fair values of accounts receivable, accounts payable and lease
obligations are estimated to approximate carrying value due to the short-term
maturities of these financial instruments. The carrying value of the Company's
line of credit approximates fair value as the interest rate is indexed to
changes in the bank's prime lending rate.
 
    (I) USE OF ESTIMATES
 
    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect certain reported amounts and disclosures. Accordingly,
actual results could differ from those estimates.
 
    (J) EARNINGS PER SHARE
 
    In February 1997, the Financial Accounting Standards Board issued Statement
of Financial Accounting Standards No. 128, EARNINGS PER SHARE ("SFAS No. 128").
SFAS No. 128 revised the previous calculation methods and presentations of
earnings per share under APB 15 and requires that all prior-period earnings
(loss) per share data be restated. The Company adopted SFAS No. 128 in 1997 as
required by this Statement. In accordance with SFAS No. 128, the Company has
presented basic earnings (loss) per share, computed on the basis of the weighted
average number of common shares outstanding during the year, and diluted loss
per share, computed on the basis of the weighted average number of common shares
and all dilutive potential common shares outstanding during the year. All prior
period loss per share amounts have been restated in accordance with this
Statement.
 
    Basic earnings per share has been computed by dividing income available to
common shareholders by the weighted-average number of shares of common stock
outstanding for the year.
 
    Diluted earnings per share reflects the dilution that could occur if
securities or other contracts to issue common stock were exercised or converted
into common stock or resulted in the issuance of common
 
                                      F-8
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                         NOTES TO FINANCIAL STATEMENTS
 
(1) GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
stock that then shared in the earnings of the entity. Diluted earnings per share
has been computed by dividing the income available to common shareholders by the
weighted average number of shares outstanding for the year plus the weighted
average number of shares that would be issued upon exercise of dilutive options
assuming proceeds were used to repurchase shares pursuant to the treasury stock
method.
 
<TABLE>
<CAPTION>
                                 BASIC EARNINGS PER SHARE
                          --------------------------------------
                                       DECEMBER 31,                       MARCH 31,
                          --------------------------------------  --------------------------
                             1995         1996          1997          1997          1998
                          ----------  ------------  ------------  ------------  ------------
<S>                       <C>         <C>           <C>           <C>           <C>
Weighted average number
  of common shares......   9,717,030    10,398,954    10,398,954    10,398,954    10,398,954
                          ----------  ------------  ------------  ------------  ------------
                          ----------  ------------  ------------  ------------  ------------
</TABLE>
 
<TABLE>
<CAPTION>
                                DILUTED EARNINGS PER SHARE
                          --------------------------------------
                                       DECEMBER 31,                       MARCH 31,
                          --------------------------------------  --------------------------
                             1995         1996          1997          1997          1998
                          ----------  ------------  ------------  ------------  ------------
<S>                       <C>         <C>           <C>           <C>           <C>
Weighted average number
  of common shares......   9,717,030    10,398,954    10,398,954    10,398,954    10,398,954
Dilutive stock options
  computed using
  treasury stock
  method................      --           --            182,481       --            182,481
                          ----------  ------------  ------------  ------------  ------------
                           9,717,030    10,398,954    10,581,435    10,398,954    10,581,435
                          ----------  ------------  ------------  ------------  ------------
                          ----------  ------------  ------------  ------------  ------------
</TABLE>
 
    (K) UNAUDITED INTERIM FINANCIAL INFORMATION
 
    Interim information for the three months ended March 31, 1997 and 1998,
including such information in the notes to the financial statements, is
unaudited. This information has been prepared on the same basis as the annual
financial statements and, in the opinion of the Company's management, reflects
all adjustments, consisting of normal recurring adjustments considered necessary
for a fair presentation of the results of such period. Financial results for the
interim period are not necessarily indicative of the results for a full year.
 
                                      F-9
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                         NOTES TO FINANCIAL STATEMENTS
 
(2) PROPERTY AND EQUIPMENT
 
    Property and equipment, including assets acquired under capital leases of
$1,732,000 as of December 31, 1996 and 1997 and March 31, 1998, is comprised of
the following:
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                               USEFUL     --------------------------
                                                LIVES         1996          1997
                                             -----------  ------------  ------------   MARCH 31,
                                                                                          1998
                                                                                      ------------
                                                                                      (UNAUDITED)
<S>                                          <C>          <C>           <C>           <C>
Leasehold improvements.....................          15   $    134,164  $    222,903  $    736,407
Furniture, fixtures and office equipment...         5-7        114,613       194,967       336,209
Computer equipment and purchased
  software.................................           5        522,383       896,654       933,183
Network equipment..........................           5      2,912,529     3,869,376     3,908,364
                                                          ------------  ------------  ------------
    Total property and equipment...........                  3,683,689     5,183,900     5,914,163
Less accumulated deprecation, including
  amounts applicable to assets acquired
  under capital leases of $474,238 and
  $721,667 and $783,524 as of December 31,
  1996 and 1997, and March 31, 1998,
  respectively.............................                    826,067     1,491,230     1,751,964
                                                          ------------  ------------  ------------
    Net property and equipment.............               $  2,857,622  $  3,692,670  $  4,162,199
                                                          ------------  ------------  ------------
                                                          ------------  ------------  ------------
</TABLE>
 
(3) LEASES
 
    The Company leases certain network equipment under capital leases and leases
office space under operating leases. Future minimum lease payments under these
lease agreements for each of the next five years are summarized as follows:
 
<TABLE>
<CAPTION>
                                                                       CAPITAL     OPERATING
                                                                       LEASES        LEASES
                                                                     -----------  ------------
<S>                                                                  <C>          <C>
Year ending December 31,:
  1998.............................................................  $   299,632  $    403,387
  1999.............................................................      299,632       315,105
  2000.............................................................       99,877       218,462
  2001.............................................................      --            147,813
  2002.............................................................      --            141,247
  Thereafter.......................................................      --            261,106
                                                                     -----------  ------------
    Total minimum lease payments...................................      699,141  $  1,487,120
                                                                                  ------------
                                                                                  ------------
  Less amount representing interest based upon 12% interest rate...      (91,976)
                                                                     -----------
  Present value of future minimum lease payments...................      607,165
  Less current installments........................................     (239,672)
                                                                     -----------
  Obligations under capital leases, excluding current
    installments...................................................  $   367,493
                                                                     -----------
                                                                     -----------
</TABLE>
 
                                      F-10
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                         NOTES TO FINANCIAL STATEMENTS
 
(3) LEASES (CONTINUED)
    As operating leases expire, it is expected that they will be replaced with
similar leases. Rent expense under operating leases totaled $197,345, $210,596
and $259,699 for each of the years ended December 31, 1995, 1996 and 1997,
respectively.
 
(4) DEBT
 
    In March 1996, the Company entered into a revolving credit facility with a
bank for borrowings up to $1,500,000. In December 1997, the Company entered into
an amended agreement that provides for borrowings up to $2,500,000. Borrowings
under the amended line of credit agreement are due in December, 1998 and bear
interest at the prime rate plus 2% (10.5% at December 31, 1997.) The line of
credit is subject to certain borrowing base limitations, primarily relating to
the accounts receivable balance. The line of credit is secured by accounts
receivable and certain shareholder guarantees. The balance outstanding as of
December 31, 1996 and 1997 under the line of credit was $814,422 and $1,152,329,
respectively; and the amount of unused line of credit was $1,347,671 as of
December 31, 1997.
 
    The Company was in violation of a debt covenant as of December 31, 1997. The
Company has obtained a waiver for this covenant violation. The Company
anticipates that the debt covenant requirements will be met through December 31,
1998.
 
    At December 31, 1995, the Company had outstanding a note payable to a
related party totaling $1,170,000. The payment terms were upon demand or the due
date of March 31, 1998, bearing an interest rate of 13%. In 1995, the related
party converted $750,000 relating to the note payable and accrued interest into
approximately 7% of the outstanding stock of the Company, at that time. The
principal balance outstanding as of December 31, 1996 was $521,835 and was paid
in full in 1997.
 
    In 1994, the Company entered into note payable agreements with three
officers of the Company relating to stock repurchased by the Company. Each of
the original note agreements are in the amount of $50,000 with no stated
interest rate. The notes have been discounted using an interest rate of 5.8% and
are payable in three annual installments beginning April 1998. The aggregate
amount outstanding relating to these notes, net of unamortized discount was
$112,827 and $128,166 as of December 31, 1996 and 1997, respectively. The
unamortized discount was $37,173 and $21,834 as of December 31, 1996 and 1997,
respectively.
 
    At December 31, 1996, the Company had outstanding a note payable to a bank
for $200,000. The note was paid in full in 1997.
 
    The aggregate maturities of long-term debt, exclusive of the unamortized
discount of $15,339, for each of the years subsequent to December 31, 1997 are
as follows: 1998--$50,000; 1999--$50,000 and 2000-- $50,000.
 
(5) RELATED PARTIES
 
    During 1997, the Company provided general and administrative services for an
affiliate. The Company was reimbursed for the general and administrative
expenses plus a mark-up of 5%. The total general and administrative expenses
reimbursed was $-0-, $77,000 and $150,948 for the years ended December 31, 1995,
1996 and 1997, respectively.
 
                                      F-11
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                         NOTES TO FINANCIAL STATEMENTS
 
(6) ACCRUED LIABILITIES
 
    Accrued liabilities consisted of the following:
 
<TABLE>
<CAPTION>
                                                                           1996        1997
                                                                        ----------  ----------
<S>                                                                     <C>         <C>
Compensation-related..................................................  $   10,728  $  443,575
Current portion of long-term debt (note 4)............................     200,000      42,722
Other.................................................................     165,622      48,026
                                                                        ----------  ----------
                                                                        $  376,350  $  534,323
                                                                        ----------  ----------
                                                                        ----------  ----------
</TABLE>
 
(7) STOCKHOLDERS' EQUITY
 
    STOCK OPTION PLAN
 
    In September 1997, the Company adopted a stock option plan (the "Plan")
pursuant to which the Company's Board of Directors may grant nonqualified
options to employees. The Plan authorizes grants of option to purchase up to 10%
of the common shares outstanding. All stock options have a ten-year term and
cannot be exercised prior to September 1, 1998. The options are exercisable in
20% increments over a five-year vesting period. All options expire August 31,
2007.
 
    In 1997, the Company granted 213,177 nonqualified stock options with an
exercise price of $1.00 per share. The Company recorded deferred compensation of
$417,100 related to these stock option grants which will be recognized in the
income statement over the vesting period. As of December 31, 1997, 4,627 of the
options previously granted were cancelled and no options were exercised.
 
    The Company applied the intrinsic value method prescribed by APB Opinion No.
25 in accounting for its Plan. Had the Company determined compensation cost
based on the fair value at the grant date for its stock options under SFAS No.
123, the Company's net income and basic earnings per share would have been:
 
<TABLE>
<CAPTION>
                                                                        DECEMBER 31, 1997
                                                                    --------------------------
                                                                    AS REPORTED    PRO FORMA
                                                                    ------------  ------------
<S>                                                                 <C>           <C>
Net income........................................................  $  1,815,436  $  1,779,177
                                                                    ------------  ------------
                                                                    ------------  ------------
Basic earnings per share..........................................  $       0.17  $       0.17
                                                                    ------------  ------------
                                                                    ------------  ------------
</TABLE>
 
    Diluted earnings per share yields substantially similar results. The Company
estimated the fair value of stock options granted using the minimum value method
as defined in SFAS No. 123. The minimum value method is applicable for privately
held companies and does not consider the expected volatility of the underlying
stock. Input variables used in the minimum value computation included a risk
free rate of interest of 5.7%, no expected dividend yield, and an estimated
option life of 2.5 years. The pro forma impact on income assumes no options will
be forfeited.
 
                                      F-12
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                         NOTES TO FINANCIAL STATEMENTS
 
(8) INCOME TAXES
 
    Income tax expense is comprised of the following:
 
<TABLE>
<CAPTION>
                                                            1995         1996         1997
                                                         -----------  ----------  ------------
<S>                                                      <C>          <C>         <C>
Current:
  Federal..............................................  $   --       $   --      $  1,229,208
  State................................................      --           --           108,459
                                                         -----------  ----------  ------------
    Total current......................................      --           --         1,337,667
Deferred:
  Federal..............................................     (221,810)    (78,209)     (218,205)
  State................................................      (23,790)    (10,351)      (19,253)
                                                         -----------  ----------  ------------
    Total deferred.....................................     (245,600)    (88,560)     (237,458)
                                                         -----------  ----------  ------------
    Income tax expense (benefit).......................  $  (245,600) $  (88,560) $  1,100,209
                                                         -----------  ----------  ------------
                                                         -----------  ----------  ------------
</TABLE>
 
    Income tax expense (benefit) differs from the amount computed by applying
the federal income tax rate of 34% to earnings before taxes, as follows:
 
<TABLE>
<CAPTION>
                                                            1995         1996         1997
                                                         -----------  ----------  ------------
<S>                                                      <C>          <C>         <C>
Expected federal income tax expense (benefit)..........  $  (264,333) $  (92,217) $    991,319
State income tax expense (benefit), net of federal
  effect...............................................      (23,790)    (10,351)       89,206
Other..................................................       42,523      14,008        19,684
                                                         -----------  ----------  ------------
                                                         $  (245,600) $  (88,560) $  1,100,209
                                                         -----------  ----------  ------------
                                                         -----------  ----------  ------------
</TABLE>
 
    The tax effect of significant temporary differences giving rise to deferred
income tax assets and liabilities are shown below:
 
<TABLE>
<CAPTION>
                                                                           1996        1997
                                                                        ----------  ----------
<S>                                                                     <C>         <C>
Deferred income tax liabilities--property and equipment, principally
  depreciation adjustments............................................  $  401,270  $  527,394
Deferred income tax assets:
  Net operating loss carryover........................................     587,459      --
  Allowance for doubtful accounts.....................................     124,199     607,067
  Unearned compensation...............................................      --           7,717
  Other...............................................................      23,772       9,311
                                                                        ----------  ----------
    Total gross deferred tax assets...................................     735,430     624,095
                                                                        ----------  ----------
    Net deferred tax asset............................................  $  334,160  $   96,701
                                                                        ----------  ----------
                                                                        ----------  ----------
</TABLE>
 
    The net operating loss carryover was fully utilized in 1997. No valuation
allowance for deferred taxes at December 31, 1996 and 1997 was considered
necessary. The ultimate realization of deferred tax assets is dependent upon the
generation of future taxable income during the periods in which those temporary
 
                                      F-13
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                         NOTES TO FINANCIAL STATEMENTS
 
(8) INCOME TAXES (CONTINUED)
differences become deductible. The Company considered the scheduled reversal of
deferred tax liabilities, projected future taxable income, and tax planning
strategies in making this assessment.
 
(9) COMMITMENTS
 
    The Company has an agreement with various vendors which require minimum
usage. In the event such monthly commitments are not met, the Company is
required to remit to the vendor the difference between the commitments and the
actual usage. Such amount, if necessary, would be recorded as cost of revenue in
the period incurred.
 
(10) RETIREMENT PLAN
 
    Effective July 1, 1996, the Company adopted a 401(k) Retirement Savings Plan
(the "Plan"). The Plan is a defined contribution plan covering all employees of
the Company who have one year of service and have attained the age of 21.
Participants may contribute up to 15% of their base pay in pretax dollars. The
Company will match employee contributions on a discretionary basis. Vesting in
Company contributions is 100% after five years in the Plan. The Company made no
contributions to the Plan in 1996 or 1997.
 
(11) BUSINESS SEGMENT
 
    The Company operates in a single industry segment. The geographic
termination of revenue is as follows:
 
<TABLE>
<CAPTION>
                                                      1995           1996           1997
                                                  -------------  -------------  -------------
<S>                                               <C>            <C>            <C>
United States...................................  $  13,439,658  $  18,979,427  $  32,760,482
International...................................       --            2,433,261      7,488,849
Mexico..........................................       --            1,761,216      6,495,218
                                                  -------------  -------------  -------------
                                                  $  13,439,658  $  23,173,904  $  46,744,549
                                                  -------------  -------------  -------------
                                                  -------------  -------------  -------------
</TABLE>
 
(12) CONCENTRATION OF CUSTOMERS AND SUPPLIERS
 
    All revenue was derived from unaffiliated customers. For the year ended
December 31, 1995, three customers provided 19%, 14% and 10% of the Company's
revenue. For the year ended December 31, 1996, three customers provided 15%, 14%
and 10% of the Company's revenue. For the year ended December 31, 1997,
approximately 20% of the Company's total revenues were derived from a single
customer.
 
    Two suppliers accounted for 78% of the purchases in 1995 and three suppliers
accounted for 50% of the purchases in 1996. For the year ended December 31,
1997, approximately 40% of the Company's total cost of sales were attributable
to three suppliers.
 
(13) SUBSEQUENT EVENTS
 
    On February 16, 1998, the Company entered into a definitive agreement to
merge with IWL Communications, Inc., a public company listed on NASDAQ and
CapRock Fiber Network, Ltd. The merger is subject, among other matters, to
approval by the shareholders of IWL Communications, Inc., the Company and the
Partnership.
 
                                      F-14
<PAGE>
                        CAPROCK TELECOMMUNICATIONS CORP.
                    (FORMERLY CAPROCK COMMUNICATIONS CORP.)
                         NOTES TO FINANCIAL STATEMENTS
 
(13) SUBSEQUENT EVENTS (CONTINUED)
    In June 1998, the Company increased its bank line of credit discussed in
Note 4 to $7 million. The Company can advance a maximum of $2.5 million to
CapRock Fiber Network, Ltd. The line of credit will mature on the earlier of the
consummation of the merger with IWL Communications, Inc. and CapRock Fiber
Network, Ltd. or August 31, 1998.
 
                                      F-15
<PAGE>
                          INDEPENDENT AUDITORS' REPORT
 
The Partners of
CapRock Fiber Network, Ltd.:
 
    We have audited the accompanying balance sheet of CapRock Fiber Network,
Ltd., as of December 31, 1997, and the related statements of operations,
partners' deficit, and cash flows for the year then ended. These financial
statements are the responsibility of the Partnership's management. Our
responsibility is to express an opinion on these financial statements based on
our audit.
 
    We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.
 
    In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of CapRock Fiber Network, Ltd.,
as of December 31, 1997, and the results of its operations and its cash flows
for the year then ended in conformity with generally accepted accounting
principles.
 
                                          KPMG Peat Marwick LLP
 
Dallas, Texas
February 11, 1998, except as to note 8,
  which is as of February 16, 1998
 
                                      F-16
<PAGE>
                          INDEPENDENT AUDITORS' REPORT
 
The Partners of
CapRock Fiber Network, Ltd.:
 
    We have audited the accompanying balance sheet of CapRock Fiber Network,
Ltd., as of December 31, 1996, and the related statements of operations,
partners' capital, and cash flows for the years ended December 31, 1995 and
1996. These financial statements are the responsibility of the Partnership's
management. Our responsibility is to express an opinion on these financial
statements based on our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
    In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of CapRock Fiber Network, Ltd.,
as of December 31, 1996, and the results of its operations and its cash flows
for the years ended December 31, 1995 and 1996 in conformity with generally
accepted accounting principles.
 
                                          Burds, Reed and Mercer, P.C.
 
Dallas, Texas
March 19, 1997
 
                                      F-17
<PAGE>
                          CAPROCK FIBER NETWORK, LTD.
                                 BALANCE SHEETS
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                                 DECEMBER 31,
                                                                          --------------------------
                                                                              1996          1997
                                                                          ------------  ------------   MARCH 31,
                                                                                                      ------------
                                                                                                          1998
                                                                                                      ------------
                                                                                                      (UNAUDITED)
<S>                                                                       <C>           <C>           <C>
Current assets:
  Cash..................................................................  $    --       $    172,543  $    657,599
  Restricted cash (note 1(b))...........................................        25,415       --            --
  Trade receivables.....................................................       --            206,404        44,373
  Prepaid expenses......................................................         2,733         3,602         3,602
                                                                          ------------  ------------  ------------
    Total current assets................................................        28,148       382,549       705,574
Property, plant and equipment, net (note 2).............................     8,552,360     9,299,859     9,167,778
Other assets, net.......................................................       176,804        96,797        75,227
                                                                          ------------  ------------  ------------
    Total assets........................................................  $  8,757,312  $  9,779,205  $  9,948,579
                                                                          ------------  ------------  ------------
                                                                          ------------  ------------  ------------
 
                                        LIABILITIES AND PARTNERS' DEFICIT
 
Current liabilities:
  Bank overdraft........................................................  $    957,497  $    --       $    --
  Accounts payable......................................................       894,977        81,904       279,236
  Accrued commitment and guarantor fees
    (note 6)............................................................       208,020       406,010       418,312
  Accrued liabilities...................................................        77,131        67,337       107,871
  Current portion of long-term debt (note 3)............................       506,981       886,304       410,470
  Unearned revenue......................................................       --            --            323,400
                                                                          ------------  ------------  ------------
    Total current liabilities...........................................     2,644,606     1,441,555     1,539,289
Long-term debt, excluding current portion
  (note 3)..............................................................     6,335,846     8,664,588     8,664,588
Partners' deficit:
  General partner.......................................................        (2,231)       (3,273)       (2,553)
  Limited partners......................................................      (220,909)     (323,665)     (252,745)
                                                                          ------------  ------------  ------------
                                                                              (223,140)     (326,938)     (255,298)
Commitments (note 4)
                                                                          ------------  ------------  ------------
    Total liabilities and partners' deficit.............................  $  8,757,312  $  9,779,205  $  9,948,579
                                                                          ------------  ------------  ------------
                                                                          ------------  ------------  ------------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-18
<PAGE>
                          CAPROCK FIBER NETWORK, LTD.
                            STATEMENTS OF OPERATIONS
 
<TABLE>
<CAPTION>
                                                                                                  THREE MONTHS ENDED
                                                              YEARS ENDED DECEMBER 31,                MARCH 31,
                                                       --------------------------------------  ------------------------
                                                          1995         1996          1997         1997         1998
                                                       -----------  -----------  ------------  -----------  -----------
                                                                                                     (UNAUDITED)
<S>                                                    <C>          <C>          <C>           <C>          <C>
Telecommunication services and other revenues........  $   173,227  $   --       $  1,944,778  $   359,913  $   587,533
Operating expenses:
  Network access expenses............................      502,881      --             86,410       40,981       12,261
  Selling, general and administrative (note 6).......      325,956      173,618       285,219       65,392       67,028
  Depreciation and amortization......................       31,481       54,078       901,990      165,566      184,926
                                                       -----------  -----------  ------------  -----------  -----------
    Total operating expenses.........................      860,318      227,696     1,273,619      271,939      264,215
                                                       -----------  -----------  ------------  -----------  -----------
    Income (loss) from operations....................     (687,091)    (227,696)      671,159       87,974      323,318
 
Other income (expense):
  Interest expense (note 3)..........................      --              (422)     (775,327)    (165,648)    (209,944)
  Interest income....................................      --               715         1,286          309          340
  Other..............................................       12,278      --               (916)     --           --
                                                       -----------  -----------  ------------  -----------  -----------
    Loss before income taxes and extraordinary item
      ...............................................     (674,813)    (227,403)     (103,798)     (77,365)     113,714
    Income taxes.....................................      --           --            --           --            42,074
                                                       -----------  -----------  ------------  -----------  -----------
    Loss before extraordinary item...................     (674,813)    (227,403)     (103,798)     (77,365)      71,640
  Extraordinary item--extinguishment of debt (note
    1(a))............................................      644,652      --            --           --           --
                                                       -----------  -----------  ------------  -----------  -----------
    Net loss.........................................  $   (30,161) $  (227,403) $   (103,798) $   (77,365) $    71,640
                                                       -----------  -----------  ------------  -----------  -----------
                                                       -----------  -----------  ------------  -----------  -----------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-19
<PAGE>
                          CAPROCK FIBER NETWORK, LTD.
                        STATEMENTS OF PARTNERS' DEFICIT
 
<TABLE>
<CAPTION>
                                                                                GENERAL     LIMITED
                                                                                PARTNER     PARTNER       TOTAL
                                                                               ---------  -----------  -----------
<S>                                                                            <C>        <C>          <C>
Balance at December 31, 1994.................................................  $     343  $    34,081  $    34,424
Net loss.....................................................................       (300)     (29,861)     (30,161)
                                                                               ---------  -----------  -----------
Balance at December 31, 1995.................................................         43        4,220        4,263
Net loss.....................................................................     (2,274)    (225,129)    (227,403)
                                                                               ---------  -----------  -----------
Balance at December 31, 1996.................................................     (2,231)    (220,909)    (223,140)
Net loss.....................................................................     (1,042)    (102,756)    (103,798)
                                                                               ---------  -----------  -----------
Balance at December 31, 1997.................................................     (3,273)    (323,665)    (326,938)
Net income (unaudited).......................................................      1,137      112,577       71,640
                                                                               ---------  -----------  -----------
Balance at March 31, 1998 (unaudited)........................................  $  (2,136) $  (211,088) $  (255,298)
                                                                               ---------  -----------  -----------
                                                                               ---------  -----------  -----------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-20
<PAGE>
                          CAPROCK FIBER NETWORK, LTD.
                            STATEMENTS OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                                                            THREE MONTHS ENDED
                                                            YEARS ENDED DECEMBER 31,             MARCH 31,
                                                        ---------------------------------  ---------------------
                                                          1995        1996        1997        1997       1998
                                                        ---------  ----------  ----------  ----------  ---------
                                                                                                (UNAUDITED)
<S>                                                     <C>        <C>         <C>         <C>         <C>
Cash flows from operating activities:
  Net income (loss)...................................  $ (30,161) $ (227,403) $ (103,798) $  (77,365) $  71,640
  Adjustments to reconcile net loss to net cash
    provided by operating activities:
    Extraordinary gain on extinguishment of debt......   (644,652)     --          --          --         --
    Depreciation and amortization.....................     31,481      54,078     901,990     165,566    184,926
    Allowance for doubtful accounts...................     49,183      --          --          --         --
    Changes in operating assets and liabilities:
    Restricted cash...................................     --         (25,415)     25,415      --         --
    Trade receivable..................................      4,453      --        (206,404)     --        162,031
    Prepaid expenses..................................      5,310      (2,087)       (869)     --         --
    Other assets......................................      4,937      --        (185,131)   (190,305)    --
    Accounts payable and accrued liabilities..........    414,568     128,020    (624,877)     99,192    250,168
    Unearned revenue..................................     --          --          --          --        323,400
                                                        ---------  ----------  ----------  ----------  ---------
      Net cash used in operating activities...........   (164,881)    (72,807)   (193,674)     (2,912)   992,165
                                                        ---------  ----------  ----------  ----------  ---------
Cash flows from investing activities:
  Capital expenditures................................     --      (7,601,034) (1,384,351) (1,194,784)   (31,275)
  Proceeds from sale of equipment.....................      7,852      --          --          --         --
                                                        ---------  ----------  ----------  ----------  ---------
      Net cash provided by (used in) investing
        opportunities.................................      7,852  (7,601,034) (1,384,351) (1,194,784)   (31,275)
                                                        ---------  ----------  ----------  ----------  ---------
Cash flows from financing activities:
  Proceeds under long-term note agreement.............     --       6,842,827   3,055,000   3,004,999     --
  Principal payments under long-term note agreement...     --          --          --          --       (475,834)
  Loan fees paid under long-term note agreement.......     --        (135,749)   (346,935)     --         --
  Net change in bank overdraft........................     --         957,497    (957,497)   (957,497)    --
                                                        ---------  ----------  ----------  ----------  ---------
      Net cash provided by (used in) financing
        activities....................................     --       7,664,575   1,750,568   2,047,502   (475,834)
                                                        ---------  ----------  ----------  ----------  ---------
Net increase (decrease) in cash.......................   (157,029)     (9,266)    172,543     849,806    485,056
Cash at beginning of year.............................    166,295       9,266      --          --        172,543
                                                        ---------  ----------  ----------  ----------  ---------
Cash at end of year...................................  $   9,266  $   --      $  172,543  $  849,806  $ 657,599
                                                        ---------  ----------  ----------  ----------  ---------
                                                        ---------  ----------  ----------  ----------  ---------
Supplemental disclosure of cash flow information:
  Cash paid during the year for interest..............  $  --      $   --      $  785,121  $  165,648  $ 209,944
                                                        ---------  ----------  ----------  ----------  ---------
                                                        ---------  ----------  ----------  ----------  ---------
  Noncash investing and financing activities (note
    7)................................................
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-21
<PAGE>
                          CAPROCK FIBER NETWORK, LTD.
                         NOTES TO FINANCIAL STATEMENTS
        (INFORMATION AS OF MARCH 31, 1998 AND FOR THE THREE MONTHS ENDED
                     MARCH 31, 1997 AND 1998 IS UNAUDITED)
 
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
    (A) GENERAL DESCRIPTION
 
    CapRock Fiber Network, Ltd. ("CapRock Fiber" or "the Partnership"), is a
facilities-based provider of dark fiber bandwidth services to interexchange
carriers and other communications entities as well as to businesses and
consumers. The Partnership operates a digital fiber optic network between
Houston, Victoria and to Corpus Christi, Texas. CapRock Fiber is a Texas limited
partnership formed in December 1992. The general partner is responsible for,
among other things, the management of the affairs of the Partnership and has
unlimited liability for the debts, liabilities and obligations of the
Partnership to third parties. No limited partner shall be personally responsible
for any debts of the Partnership nor any of the losses thereof beyond the amount
of the capital contributions of each to the Partnership, except as to any debt
guarantees provided by two of the limited partners. The fiber network became
operational in January 1997. Prior to 1997, CapRock Fiber was a development
stage enterprise.
 
    In 1995, the Partnership terminated a fiber lease agreement entered into in
June 1994 with a vendor to lease fiber capacity. The Partnership entered into
various agreements to maintain the fiber network and sublease the fiber
capacity. CapRock recorded maintenance revenues in the amount of $173,227 for
the year ended December 31, 1995. CapRock provided property and equipment to the
vendor in exchange for the forgiveness of amounts then due under the lease
agreements and the remaining future obligation. CapRock recorded an
extraordinary gain of approximately $644,000 in 1995 as a result of the
transaction.
 
    (B) RESTRICTED CASH
 
    Restricted cash represents cash which is restricted as security for a surety
bond. The surety bond expired on May 17, 1997, and as such there was no
restricted cash balance at December 31, 1997. The restricted cash balance was
$25,415 at December 31, 1996.
 
    (C) PROPERTY, PLANT AND EQUIPMENT
 
    Property, plant and equipment are stated at cost and include certain costs
which were capitalized during the installation and expansion of
telecommunications networks including interest costs related to construction of
approximately $143,255, which was incurred in 1996. No interest was capitalized
in 1997, as the fiber network was placed in service in January 1997.
Depreciation is computed using the straight-line method over the estimated usefu
lives of the assets. Leasehold improvements are amortized using the
straight-line method over the shorter of the estimated useful lives of the
assets or the remaining terms of the leases. The estimated useful lives of owned
assets are as follows:
 
<TABLE>
<S>                                                                 <C>
Land..............................................................     --
Buildings.........................................................   20 years
Leasehold improvements............................................   20 years
Telecommunication network.........................................   20 years
Equipment.........................................................    5 years
</TABLE>
 
    (D) PARTNERS' CAPITAL
 
    The partners' capital balances are determined in accordance with the
partnership agreement which requires a tax basis computation. The financial
statements have been prepared in accordance with
 
                                      F-22
<PAGE>
                          CAPROCK FIBER NETWORK, LTD.
                         NOTES TO FINANCIAL STATEMENTS
 
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
generally accepted accounting principles (GAAP), therefore differences exist
between the capital accounts maintained on a GAAP basis and tax basis. Net
income or loss is allocated amongst the partners based upon the provisions of
the partnership agreement.
 
    (E) REVENUE RECOGNITION
 
    Telecommunication service revenues are recognized when the services are
provided. The revenue from long-term leases of fiber optic cable is recognized
monthly over the terms of the related leases.
 
    (F) TRADE RECEIVABLES
 
    As of December 31, 1997 the trade receivables balance consisted of unsecured
amounts due from customers obligated under operating lease agreements. No
allowance for doubtful accounts was recorded as of December 31, 1997. There were
no trade receivables as of December 31, 1996.
 
    (G) IMPAIRMENT OF LONG-LIVED ASSETS AND LONG-LIVED ASSETS TO BE DISPOSED OF
 
    Effective January 1, 1996, the Partnership has adopted the provisions of
SFAS No. 121, ACCOUNTING FOR THE IMPAIRMENT OF LONG-LIVED ASSETS AND FOR
LONG-LIVED ASSETS TO BE DISPOSED OF. This Statement requires that long-lived
assets and certain identifiable intangibles be reviewed for impairment whenever
events or changes in circumstances indicate that the carrying amount of an asset
may not be recoverable. Recoverability of assets to be held and used is measured
by a comparison of the carrying amount of an asset to future net cash flows
expected to be generated by the asset. If such assets are considered to be
impaired, the impairment to be recognized is measured by the amount by which the
carrying amount of the assets exceed the fair value of the assets. Assets to be
disposed of are reported at the lower of the carrying amount or fair value less
costs to sell.
 
    (H) FAIR VALUE OF FINANCIAL INSTRUMENTS
 
    The fair values of cash, receivables, and accounts payable are estimated to
approximate carrying value due to the short-term maturities of these financial
instruments. The carrying value of the Partnership's long-term debt approximates
fair value as the interest rate is indexed to changes in the bank's prime
lending rate.
 
    (I) USE OF ESTIMATES
 
    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect certain reported amounts and disclosures. Accordingly,
actual results could differ from those estimates.
 
    (J) INCOME TAXES
 
    The Partnership is not subject to federal income tax and, accordingly, no
provision for federal income taxes is required. Net income or loss of the
Partnership is taxed in the income tax returns of the Partners.
 
    Effective January 1, 1998, the Partnership elected to be taxed as a C
Corporation. Consequently, the Partnership will be subject to federal income
taxes effective January 1, 1998. The unaudited pro forma effect on income taxes
as if the Partnership had been taxed as a C Corporation for all periods
presented would have been to provide an income tax benefit of approximately
$11,000, $84,000 and $38,000 for the years ended December 31, 1995, 1996 and
1997, respectively, and $42,000 for the three months ended
 
                                      F-23
<PAGE>
                          CAPROCK FIBER NETWORK, LTD.
                         NOTES TO FINANCIAL STATEMENTS
 
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
March 31, 1998. The pro forma effect on the balance sheet would provide for the
establishment of deferred income tax assets of approximately $0, $82,000 and
$82,000 as of December 31, 1996 and 1997 and March 31, 1998, respectively, which
is primarily attributed to depreciation and amortization.
 
    (K) UNAUDITED INTERIM FINANCIAL INFORMATION
 
    Interim information for the three months ended March 31, 1997 and 1998,
including such information in the notes to the financial statements, is
unaudited. This information has been prepared on the same basis as the annual
financial statements, and, in the opinion of the Partnership's management,
reflects all adjustments, consisting of normal recurring adjustments considered
necessary for a fair presentation of the results of such period. Financial
results for the interim period are not necessarily indicative of the results for
a full year.
 
(2) PROPERTY, PLANT AND EQUIPMENT
 
    The components of property, plant and equipment at are as follows:
 
<TABLE>
<CAPTION>
                                                             DECEMBER 31,
                                                      --------------------------
                                                          1996          1997
                                                      ------------  ------------   MARCH 31,
                                                                                      1998
                                                                                  ------------
                                                                                  (UNAUDITED)
<S>                                                   <C>           <C>           <C>
Land................................................  $     10,243  $     10,243  $     10,243
Buildings...........................................       --            186,286       186,286
Leasehold improvements..............................       103,002       107,565       107,565
Telecommunications network..........................     8,201,258     8,505,917     8,505,917
Equipment...........................................       237,857     1,126,700     1,157,975
                                                      ------------  ------------  ------------
                                                         8,552,360     9,936,711     9,967,986
Accumulated depreciation............................       --           (636,852)     (805,054)
                                                      ------------  ------------  ------------
                                                      $  8,552,360  $  9,299,859  $  9,162,932
                                                      ------------  ------------  ------------
                                                      ------------  ------------  ------------
</TABLE>
 
    The Partnership has also leased dark fiber included in the
telecommunications network to unrelated long-distance carriers (see note 5).
 
(3) LONG-TERM DEBT
 
    The Partnership has a loan agreement with a bank whereby it borrowed $10
million used for the construction, start-up and related expenses of the fiber
optic network. The loan was initially secured by the network, investment
securities of a limited partner, accounts receivable and guarantees of both the
general partner and certain limited partners, and currently is guaranteed by two
of the limited partners (see note 6). The Partnership is required to maintain
certain financial covenants as a condition of this loan. Accrued interest is
payable monthly. Quarterly principal payments began on March 31, 1997. Principal
payment amounts gradually increase from .5% to 3.5% of the outstanding principal
balance existing at March 31, 1997. Additional principal payments began on June
30, 1997 based upon excess cash flow, as defined in the agreement. All unpaid
principal and accrued interest is due in full December 31, 2001. Interest is
charged at either the bank's prime rate (8.25% and 8.5% at December 31, 1996 and
1997, respectively), or a spread over LIBOR. Under the loan agreement, the
Partnership has the ability to secure a fixed rate of interest on certain
portions of the outstanding balance, subject to certain restrictions. The
balance outstanding under this loan agreement at December 31, 1996 and 1997 was
$6,842,827 and
 
                                      F-24
<PAGE>
                          CAPROCK FIBER NETWORK, LTD.
                         NOTES TO FINANCIAL STATEMENTS
 
(3) LONG-TERM DEBT (CONTINUED)
$9,550,892, respectively. The current portion outstanding under this loan
agreement at December 31, 1996 and 1997 was $506,981 and $886,304, respectively.
Principal maturities are as follows:
 
<TABLE>
<S>                                                               <C>
1998............................................................  $ 886,304
1999............................................................  1,034,022
2000............................................................  1,230,978
2001............................................................  6,399,588
                                                                  ---------
                                                                  $9,550,892
                                                                  ---------
                                                                  ---------
</TABLE>
 
    The Partnership was in violation of certain debt covenants as of December
31, 1996 and 1997. The Partnership has obtained a waiver for these covenant
violations. The Partnership anticipates that debt covenant requirements will be
met through December 31, 1998.
 
(4) COMMITMENTS
 
    The Partnership leases office space and land used for transmission sites.
These lease terms are for initial terms of five and twenty years, respectively.
Rent expense for the years ended December 31, 1995, 1996 and 1997 was $7,625,
$2,473 and $12,439, respectively. Future minimum lease commitments under these
agreement are as follows:
 
<TABLE>
<S>                                                                 <C>
1998..............................................................  $  22,303
1999..............................................................     22,303
2000..............................................................     22,303
2001..............................................................     21,727
2002..............................................................     21,000
2003 and thereafter...............................................    320,500
                                                                    ---------
                                                                    $ 430,136
                                                                    ---------
                                                                    ---------
</TABLE>
 
    The Partnership also is obligated to pay a telecommunications franchise fee
to a municipality. These payments are due quarterly, and amount to the greater
of $3,000 or 5% of gross income generated within the municipality.
 
(5) FIBER OPTIC LINE RENTAL
 
    As of December 31, 1997, multiple lease agreements had been signed with
customers to lease capacity over the fiber optic line. Substantially all of the
Partnership's revenues in 1997 have been derived from two customers. One of the
customers provided for approximately 93% of total revenues in 1997 and comprised
78% of the trade receivable balance. The other significant customer provided for
approximately 5% of total revenues in 1997 and comprised 22% of the trade
receivable balance. The lease terms are through August 2004 and July 2006. These
lease agreements include various renewal options.
 
(6) RELATED PARTY TRANSACTIONS
 
    LOAN FEES:
 
    Certain partners have guaranteed the bank loan. In consideration, the
Partnership has agreed to pay a one-time commitment fee equal to 1% of each
partner's guarantee. No commitment fees were accrued in
 
                                      F-25
<PAGE>
                          CAPROCK FIBER NETWORK, LTD.
                         NOTES TO FINANCIAL STATEMENTS
 
(6) RELATED PARTY TRANSACTIONS (CONTINUED)
1997. These loan commitment fees in 1996 were $80,000, and these fees began
accruing interest at 12% on July 1, 1997. This rate increases 2% each July 1
thereafter. The guarantors were also paid a loan guaranty fee by the Partnership
equal to 7% of the amount of the lesser of $8,000,000 or the average outstanding
daily principal of the loan. The bank released the guaranty requirement in April
1997 for certain limited partners. No guaranty fees will be paid prospectively
to the remaining guarantors and therefore, no guaranty fees have been accrued
subsequent to April 1997, other than accrued interest. The total accrued
commitment fees and loan guarantor fees as of December 31, 1996 and 1997 was
approximately $208,000 and $406,000, respectively. The Partnership has not paid
any amounts related to these agreements as of December 31, 1997.
 
    GENERAL AND ADMINISTRATION SERVICES
 
    The Partnership retained a related party to manage and administer the
operations of the network. In consideration for these services, the Partnership
will reimburse direct costs of the network plus 5%, payable monthly. The total
general and administrative expenses paid to the affiliate was $-0-, $77,000 and
$150,948, respectively for the years ended December 31, 1995, 1996 and 1997. In
addition, as payment for marketing services, the Partnership will pay 7% of any
additional lease payments generated as a result of the related party's efforts.
There were no payments made in 1995, 1996 and 1997 under this agreement.
 
    The Partnership has entered into an agreement with a related party to manage
the construction of the fiber optic network. Under this agreement, the
Partnership paid 4% of the costs of constructing the network, payable monthly at
a minimum of $15,000 per month. The Partnership paid management fees of $296,576
in 1997 and $461,576, cumulative under the arrangement since construction
commenced.
 
(7) NONCASH INVESTING AND FINANCING ACTIVITIES
 
    During the year ended December 31, 1996, the Partnership capitalized
property and equipment of $1,171,818 and loan costs of $80,000 through an
increase in accounts payable and accrued liabilities.
 
(8) SUBSEQUENT EVENTS
 
    MERGER
 
    On February 16, 1998, the Partnership entered into a definitive agreement to
merge with CapRock Communications Corp. and IWL Communications, Inc., a public
company listed on NASDAQ. The merger is subject to approval by the shareholders
of IWL Communications, Inc. and CapRock Communications Corp.
 
    INDEFEASIBLE RIGHT TO USE
 
    The Partnership is constructing a fiber optic network between San Antonio
and Laredo, and Corpus Christi, McAllen, Harlingen, and Brownsville, Texas. On
February 6, 1998, the Partnership entered into an indefeasible right to use
contract for dark fiber. The customer will lease twelve optical fibers with an
option to lease additional fibers. The Partnership is not currently committed to
any vendors for the capital expenditures to build the fiber network.
 
                                      F-26
<PAGE>
                          INDEPENDENT AUDITORS' REPORT
 
The Stockholders
 
IWL Communications, Inc. and Subsidiaries:
 
    We have audited the accompanying consolidated balance sheets of IWL
Communications, Inc. and Subsidiaries (the Company) as of June 30, 1996 and
1997, and as of December 31, 1997 and the related consolidated statements of
operations, stockholders' equity, and cash flows for each of the years in the
three-year period ended June 30, 1997 and for the six months ended December 31,
1997. These consolidated financial statements are the responsibility of the
Company's management. Our responsibility is to express an opinion on these
consolidated financial statements based on our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
    In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the consolidated financial position of
IWL Communications, Inc. and Subsidiaries as of June 30, 1996 and 1997 and
December 31, 1997 and the results of their operations and their cash flows for
each of the years in the three-year period ended June 30, 1997 and for the six
months ended December 31, 1997 in conformity with generally accepted accounting
principles.
 
                                          KPMG Peat Marwick LLP
 
Houston, Texas
April 3, 1998,
except as to the
second paragraph of
Note 1 which is as of May 7, 1998
 
                                      F-27
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
                          CONSOLIDATED BALANCE SHEETS
                  JUNE 30, 1996 AND 1997 AND DECEMBER 31, 1997
 
<TABLE>
<CAPTION>
                                                                          JUNE 30,      JUNE 30,    DECEMBER 31,
                                                                            1996          1997          1997
                                                                        ------------  ------------  ------------
<S>                                                                     <C>           <C>           <C>
                                                     ASSETS
 
Current assets:
  Cash and cash equivalents...........................................  $    360,930  $  7,659,983  $  3,345,312
  Accounts receivable:
    Trade, less allowance for doubtful accounts of $74,513, $100,936
      and $140,613, respectively......................................     5,501,317     5,710,344     6,342,127
    Affiliate.........................................................        73,234        67,074        30,344
    Other.............................................................         7,172       116,020       239,298
  Notes receivable-trade, current portion.............................       230,429       --            --
  Inventory...........................................................       851,380     1,856,617     1,022,927
  Costs and estimated earnings in excess of billings on uncompleted
    contracts.........................................................       135,675       242,862       --
  Deferred tax asset-current..........................................        74,659       242,317       107,750
  Prepaid expenses and deposits.......................................       132,266       388,272       447,067
                                                                        ------------  ------------  ------------
      Total current assets............................................     7,367,062    16,283,489    11,534,825
                                                                        ------------  ------------  ------------
Property, plant and equipment.........................................     8,385,538    14,281,182    20,387,102
  Accumulated depreciation............................................    (3,894,863)   (5,164,829)   (6,039,032)
                                                                        ------------  ------------  ------------
      Net property, plant and equipment...............................     4,490,675     9,116,353    14,348,070
                                                                        ------------  ------------  ------------
Investment in unconsolidated subsidiary...............................       297,153       428,374       --
Other assets..........................................................       254,448       233,527       400,681
                                                                        ------------  ------------  ------------
      Total assets....................................................  $ 12,409,338  $ 26,061,743  $ 26,283,576
                                                                        ------------  ------------  ------------
                                                                        ------------  ------------  ------------
 
                                      LIABILITIES AND STOCKHOLDERS' EQUITY
 
Current liabilities:
  Notes payable-current portion.......................................  $    997,904  $    963,595  $  6,035,069
  Trade accounts payable and accrued expenses.........................     3,907,185     5,436,445     3,626,519
  Customer deposits...................................................       388,993        23,365       171,972
  Federal income taxes payable........................................        37,418       --            264,964
  Deferred revenue-current portion....................................       175,977        53,480        14,667
  Billings in excess of costs and estimated earnings on uncompleted
    contracts.........................................................        48,892        85,553        92,022
                                                                        ------------  ------------  ------------
      Total current liabilities.......................................     5,556,369     6,562,438    10,205,213
                                                                        ------------  ------------  ------------
Notes payable, noncurrent portion.....................................     2,943,837     7,692,332     3,588,308
Deferred revenue, noncurrent portion..................................        66,748       --            --
Deferred income taxes.................................................       144,034       413,071       323,913
                                                                        ------------  ------------  ------------
      Total liabilities...............................................     8,710,988    14,667,841    14,117,434
                                                                        ------------  ------------  ------------
Stockholders' equity:
  Common stock, $.01 par value; 100,000,000 authorized, issued and
    outstanding 2,225,008, 3,677,816 and 3,754,230 shares,
    respectively......................................................        22,250        36,778        37,542
  Additional paid-in capital..........................................       259,626     7,251,600     7,601,589
  Retained earnings...................................................     3,416,474     4,105,524     4,527,011
                                                                        ------------  ------------  ------------
      Total stockholders' equity......................................     3,698,350    11,393,902    12,166,142
                                                                        ------------  ------------  ------------
Commitment and contingencies
      Total liabilities and stockholders' equity......................  $ 12,409,338  $ 26,061,743  $ 26,283,576
                                                                        ------------  ------------  ------------
                                                                        ------------  ------------  ------------
</TABLE>
 
          See accompanying notes to consolidated financial statements.
 
                                      F-28
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                  YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND
                  SIX MONTHS ENDED DECEMBER 31, 1996 AND 1997
 
<TABLE>
<CAPTION>
                                                                                                            SIX MONTHS
                                                        YEARS ENDED JUNE 30,                                  ENDED
                                          -------------------------------------------------                DECEMBER 31,
                                              1995             1996               1997                         1997
                                          ------------  -------------------  --------------   SIX MONTHS   ------------
                                                                                                ENDED
                                                                                             DECEMBER 31,
                                                                                                 1996
                                                                                             ------------
                                                                                             (UNAUDITED)
<S>                                       <C>           <C>                  <C>             <C>           <C>
Sales:
  Telecommunication services............  $  5,789,570    $     6,530,887    $    7,993,104  $  3,645,771  $  4,855,428
  Project/other revenue.................    10,004,504         10,711,346        14,707,698     7,303,096     7,107,213
  Product resales.......................       --              10,553,846         7,640,788     4,695,225       --
                                          ------------  -------------------  --------------  ------------  ------------
    Total sales.........................    15,794,074         27,796,079        30,341,590    15,644,092    11,962,641
Cost of sales (exclusive of items shown
  separately below).....................    (9,639,347)       (10,743,266)      (14,709,249)   (7,004,414)   (6,556,544)
Cost of sales-product resales...........       --              (9,672,078)       (7,027,061)   (4,680,001)      --
                                          ------------  -------------------  --------------  ------------  ------------
Gross profit............................     6,154,727          7,380,735         8,605,280     3,959,677     5,406,097
Selling expenses........................       862,183            842,038         1,140,953       494,702       792,667
General and administrative expenses.....     3,537,004          4,257,067         4,704,302     2,240,224     2,838,058
Depreciation and amortization...........       820,957          1,003,296         1,403,036       635,415       981,733
                                          ------------  -------------------  --------------  ------------  ------------
Income from operations..................       934,583          1,278,334         1,356,989       589,336       793,639
                                          ------------  -------------------  --------------  ------------  ------------
Other income and (expense):
  Interest income.......................        52,036             46,300            20,374        17,764       130,024
  Interest expense......................      (296,299)          (316,412)         (534,218)     (231,490)     (347,844)
  Gain from sale of investment in
    unconsolidated subsidiary...........       --               --                 --             --             66,266
  Equity in earnings (loss) of
    unconsolidated subsidiary...........       105,829            (25,873)           81,221           776        34,662
  Gain from sale of assets..............        24,926             67,021            47,690        18,148         9,240
  Other.................................         8,123          --                 --                  28       --
                                          ------------  -------------------  --------------  ------------  ------------
Total other income (expense)............      (105,385)          (228,964)         (384,933)     (194,774)     (107,652)
                                          ------------  -------------------  --------------  ------------  ------------
Income before income taxes..............       829,198          1,049,370           972,056       394,562       685,987
Income tax expense......................       293,557            315,708           283,006       134,154       264,500
                                          ------------  -------------------  --------------  ------------  ------------
Net income..............................  $    535,641    $       733,662    $      689,050  $    260,408  $    421,487
                                          ------------  -------------------  --------------  ------------  ------------
                                          ------------  -------------------  --------------  ------------  ------------
Net income per share:
  Basic.................................  $       0.24    $          0.33    $         0.30  $       0.12  $       0.11
                                          ------------  -------------------  --------------  ------------  ------------
                                          ------------  -------------------  --------------  ------------  ------------
  Diluted...............................  $       0.24    $          0.33    $         0.30  $       0.11  $       0.11
                                          ------------  -------------------  --------------  ------------  ------------
                                          ------------  -------------------  --------------  ------------  ------------
Weighted average shares outstanding:
  Basic.................................     2,222,200          2,222,416         2,298,377     2,225,939     3,736,967
  Diluted...............................     2,232,751          2,232,967         2,323,330     2,261,149     3,907,877
</TABLE>
 
          See accompanying notes to consolidated financial statements.
 
                                      F-29
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
                CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
                  YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND
                       SIX MONTHS ENDED DECEMBER 31, 1997
 
<TABLE>
<CAPTION>
                                                    COMMON STOCK        ADDITIONAL
                                                ---------------------    PAID-IN       RETAINED
                                                  SHARES     AMOUNT      CAPITAL       EARNINGS        TOTAL
                                                ----------  ---------  ------------  ------------  -------------
<S>                                             <C>         <C>        <C>           <C>           <C>
Balances at June 30, 1994.....................   2,222,200  $  22,222  $    249,658  $  2,147,171  $   2,419,051
Net income....................................      --         --           --            535,641        535,641
                                                ----------  ---------  ------------  ------------  -------------
Balances at June 30, 1995.....................   2,222,200     22,222       249,658     2,682,812      2,954,692
Issuance of stock.............................       2,808         28         9,968       --               9,996
Net income....................................      --         --           --            733,662        733,662
                                                ----------  ---------  ------------  ------------  -------------
Balances at June 30, 1996.....................   2,225,008     22,250       259,626     3,416,474      3,698,350
Issuance of stock.............................       2,808         28         9,969       --               9,997
Proceeds from initial public common stock
  offering, net of expenses...................   1,450,000     14,500     6,982,005       --           6,996,505
Net income....................................      --         --           --            689,050        689,050
                                                ----------  ---------  ------------  ------------  -------------
Balances at June 30, 1997.....................   3,677,816     36,778     7,251,600     4,105,524     11,393,902
Issuance of stock.............................      76,414        764       386,260       --             387,024
Additional expenses from initial public
  offering....................................      --         --           (36,271)      --             (36,271)
Net income....................................      --         --           --            421,487        421,487
                                                ----------  ---------  ------------  ------------  -------------
Balance at December 31, 1997..................   3,754,230  $  37,542  $  7,601,589  $  4,527,011  $  12,166,142
                                                ----------  ---------  ------------  ------------  -------------
                                                ----------  ---------  ------------  ------------  -------------
</TABLE>
 
          See accompanying notes to consolidated financial statements.
 
                                      F-30
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
 
                 YEARS ENDED JUNE 30, 1995, 1996, AND 1997 AND
                  SIX MONTHS ENDED DECEMBER 31, 1996 AND 1997
 
<TABLE>
<CAPTION>
                                                                                                             SIX MONTHS
                                                                                             SIX MONTHS        ENDED
                                                        YEARS ENDED JUNE 30,                   ENDED        DECEMBER 31,
                                                1995            1996            1997        DECEMBER 31,        1997
                                           --------------  --------------  --------------       1996       --------------
                                                                                           --------------
                                                                                            (UNAUDITED)
<S>                                        <C>             <C>             <C>             <C>             <C>
Cash flows from operating activities:
Net income...............................  $      535,641  $      733,662  $      689,050  $      260,408  $      421,487
Adjustments to reconcile net income to
  net cash provided by (used in)
  operating activities: Depreciation and
  amortization...........................         820,957       1,003,296       1,403,036         635,415         981,733
Gain from sale of KSG....................        --              --              --              --               (66,266)
Gain from sale of assets.................         (24,926)        (67,021)        (47,690)        (18,148)         (9,240)
Deferred income taxes....................          78,903          (9,528)        101,379          34,509          45,409
Equity in (earnings) loss of
  unconsolidated subsidiary..............        (105,829)         25,873         (81,221)           (776)        (34,662)
Changes in operating assets and
  liabilities:
Accounts receivable......................        (296,166)     (3,903,405)       (311,715)        468,269        (718,331)
Inventory................................         374,297        (253,022)        (70,003)       (868,242)        833,690
Costs and estimated earnings in excess of
  billings...............................          (2,881)       (132,794)       (107,187)         52,410         242,862
Prepaid expenses and deposits............         (43,997)            (58)       (256,006)       (232,870)        (58,795)
Other assets.............................          32,274        (101,611)        (91,197)       (151,430)       (205,805)
Trade accounts payable and accrued
  expenses...............................        (640,238)      2,762,020       1,871,807         (34,128)     (1,809,926)
Customer deposits........................        (118,485)        327,692        (365,628)       (274,894)        148,607
Deferred revenue.........................         177,296        (130,359)       (189,245)        378,151         (38,813)
Billings in excess of costs and estimated
  earnings...............................        --                48,892          36,661          86,609           6,469
Federal income taxes payable.............         (90,559)         37,418         (37,418)         (1,643)        264,964
                                           --------------  --------------  --------------  --------------  --------------
Net cash provided by (used in) operating
  activities.............................         696,287         341,055       2,544,623         333,640           3,383
                                           --------------  --------------  --------------  --------------  --------------
Cash flows from investing activities:
Purchase of property, plant, and
  equipment..............................      (1,585,103)     (1,492,487)     (6,987,778)     (2,431,532)     (6,189,659)
Proceeds from disposal of property,
  plant, and equipment...................          70,525         201,550         119,210          28,776          24,140
Proceeds from notes receivable...........         283,755         659,972        --              --              --
Proceeds from sale of KSG................        --              --              --              --               529,262
Investment in unconsolidated
  subsidiary.............................        --              --               (50,000)        (50,000)       --
                                           --------------  --------------  --------------  --------------  --------------
Net cash used in investing activities....      (1,230,823)       (630,965)     (6,918,568)     (2,452,756)     (5,636,257)
                                           --------------  --------------  --------------  --------------  --------------
</TABLE>
 
                                      F-31
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
               CONSOLIDATED STATEMENTS OF CASH FLOWS (CONTINUED)
 
                 YEARS ENDED JUNE 30, 1995, 1996, AND 1997 AND
                  SIX MONTHS ENDED DECEMBER 31, 1996 AND 1997
 
<TABLE>
<CAPTION>
                                                                                                            SIX MONTHS
                                                                                             SIX MONTHS       ENDED
                                                         YEARS ENDED JUNE 30,                  ENDED       DECEMBER 31,
                                                 1995            1996            1997       DECEMBER 31,       1997
                                            --------------  --------------  --------------      1996      --------------
                                                                                            ------------
                                                                                            (UNAUDITED)
<S>                                         <C>             <C>             <C>             <C>           <C>
Cash flows from financing activities:
Proceeds from debt........................       2,350,729       8,352,398       5,902,612     2,684,377      14,280,634
Debt payments.............................      (1,496,470)     (8,002,183)     (1,236,116)     (654,706)    (13,313,184)
Proceeds from issuance of common stock....        --                 9,996       7,006,502         9,997         350,753
Decrease in cash overdraft................         (29,094)       --              --                            --
                                            --------------  --------------  --------------  ------------  --------------
Net cash provided by financing
  activities..............................         825,165         360,211      11,672,998     2,039,668       1,318,203
                                            --------------  --------------  --------------  ------------  --------------
Net increase (decrease) in cash for
  period..................................         290,629          70,301       7,299,053       (79,448)     (4,314,671)
Cash and cash equivalents at beginning of
  period..................................        --               290,629         360,930       360,930       7,659,983
                                            --------------  --------------  --------------  ------------  --------------
Cash and cash equivalents at end of
  period..................................  $      290,629  $      360,930  $    7,659,983  $    281,482  $    3,345,312
                                            --------------  --------------  --------------  ------------  --------------
                                            --------------  --------------  --------------  ------------  --------------
Supplemental disclosures of cash flow
  information:
Cash paid during the year for
  interest................................  $      317,404  $      298,546  $      509,931  $    220,185  $      347,759
Cash paid during the year for income
  taxes...................................  $      367,267  $      150,866  $      320,424  $     57,500  $     --
Supplemental schedule of noncash investing
  activities:
Conversion of accounts receivable to notes
  receivable..............................  $      331,983  $      395,637        --             --             --
Offset of notes receivable in lieu of
  accounts payable to vendor..............  $     --        $     --        $      342,547  $    --       $     --
                                            --------------  --------------  --------------  ------------  --------------
                                            --------------  --------------  --------------  ------------  --------------
</TABLE>
 
          See accompanying notes to consolidated financial statements.
 
                                      F-32
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
                      YEARS ENDED JUNE 30, 1995, 1996 AND
                  1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
NATURE OF BUSINESS
 
    The Company provides communications solutions to customers with operations
in remote, difficult-access regions and in areas around the world where
government deregulation has created new market opportunities. The Company
delivers communications services to its customers by utilizing a broad range of
analog and digital technologies, including satellite, microwave radio,
conventional two-way radio and fiber optic cable. The Company has operations in
Friendswood and Houston, Texas, New Orleans and Lafayette, Louisiana and Moscow,
Russia.
 
CHANGE IN FISCAL YEAR-END
 
    The Company changed its fiscal year end from June 30 to December 31 on May
7, 1998. These audited consolidated financial statements reflect the results of
operations and statement of cash flows for the transition six-month period ended
December 31, 1997. The results of operations and statement of cash flows for the
comparable six-month period ended December 31, 1996 are derived from unaudited
consolidated financial statements of IWL which in the opinion of IWL's
management, contain all adjustments (consisting only of normal recurring
adjustments) necessary for a fair presentation thereof.
 
BASIS OF PRESENTATION
 
    The consolidated financial statements include the accounts of IWL
Communications, Inc. and its wholly-owned subsidiaries, Spacelink Systems, Inc.,
Spacelink Systems FSC, Inc. and IWL Communications Ltd. (Russia). All material
intercompany accounts and transactions have been eliminated. The Company's
investment in and operating results of Kenwood Systems Group, which was a 50%
owned entity for the years ended June 30, 1995, 1996 and 1997 and for the six
months ended December 31, 1997 until the date of sale are included in the
accompanying financial statements on the basis of the equity method of
accounting.
 
CASH EQUIVALENTS
 
    The Company considers all highly liquid investments with an original
maturity of three months or less to be cash equivalents.
 
CONCENTRATION OF CREDIT RISK
 
    The Company performs credit evaluations of its customers, but does not
require collateral.
 
MAJOR CUSTOMERS AND SUPPLIERS
 
    For the years ended June 30, 1996 and 1997, approximately $11,688,251 (42%)
and $9,818,000 (32%), respectively of the Company's sales were from one
customer. None of the Company's sales to customers accounted for more than 10%
of sales for the year ended June 30, 1995 or the six months ended December 31,
1997. At June 30, 1997, accounts receivable-trade included balances of
approximately $880,100 and $594,200 from two of the Company's major customers.
At December 31, 1997, no customer balances accounted for more than 10% of
accounts receivable-trade.
 
                                      F-33
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                      YEARS ENDED JUNE 30, 1995, 1996 AND
                  1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    The majority of the sales to the major customer for the year ended June 30,
1996 and 1997 ($10,553,846 and $7,640,800, respectively) were attributable to a
one-time project, which included a significant equipment resale component, that
the Company substantially completed in 1997, and, therefore, is not expected to
contribute in a material manner to the Company's revenue in future periods.
 
    Customers in the oil and gas industry account for substantially all of the
Company's offshore and project related sales. Price decreases in oil and gas and
other market forces which negatively affect the oil and gas industry as a whole,
could affect funding for drilling activities in the Gulf of Mexico, North Sea
and elsewhere, and could impact the Company's financial condition, results of
operations and cash flows.
 
    The Company purchases substantially all of its telecommunications equipment
for use in the oil and gas industry from one supplier pursuant to an exclusive
distributorship agreement.
 
INVENTORY
 
    Inventory substantially consists of parts and equipment held for resale.
Inventory that can be specifically identified using a unique identification
number is stated at the lower of specific cost or market. Inventory that cannot
be specifically identified is stated at the lower of cost or market where cost
is determined using the first in-first out method. Market value, in all cases,
represents the lower of replacement cost or net realizable value.
 
PROPERTY, PLANT AND EQUIPMENT/DEPRECIATION
 
    Property and equipment is stated at cost. Depreciation is computed using the
straight-line method over the estimated useful lives of the assets as indicated
below:
 
<TABLE>
<S>                                                               <C>
Buildings and improvements......................................  7-31 years
Vehicles........................................................     5 years
Furniture and fixtures..........................................   5-7 years
Leasehold improvements..........................................  Lease term
Equipment for rent/lease........................................  7-10 years
Computers, office and test equipment............................   5-7 years
</TABLE>
 
    Significant expenditures that add materially to the utility or useful lives
of property, plant and equipment are capitalized. All other maintenance and
repair costs are charged to current operations. The cost and related accumulated
depreciation of assets replaced, retired or otherwise disposed of are eliminated
from the property accounts and any gain or loss is reflected as other income and
expense.
 
REVENUE RECOGNITION
 
    The Company provides services such as telecommunication services whose
revenue is recognized based on the monthly service provided. Lease revenues from
equipment rentals are recorded over the life of the lease contract.
Communication systems contracts are typically fixed price and revenue is
recognized based on the percentage-of-completion method, primarily based on
contract cost incurred to date compared with total estimated contract costs.
Costs and estimated earnings or losses, if any, recognized in
 
                                      F-34
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                      YEARS ENDED JUNE 30, 1995, 1996 AND
                  1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
excess of amounts billed are classified as current assets. It is anticipated
that the incurred costs associated with work in progress at the end of the
respective periods will be billed and collected within the next year. Amounts
received from clients in excess of revenues recognized to date are classified as
current liabilities.
 
STOCK OPTION PLAN
 
    Prior to July 1, 1996, the Company accounted for its stock option plan in
accordance with the provision of Accounting Principles Board (APB) Opinion No.
25, Accounting for Stock Issued to Employees, and related interpretations. As
such, compensation expense would be recorded on the date of grant only if the
current market price of the underlying stock exceeded the exercise price. On
July 1, 1996, the Company adopted SFAS No. 123, Accounting for Stock-Based
Compensation, which permits entities to recognize as expense over the vesting
period the fair value of all stock-based awards on the date of grant.
Alternatively, SFAS No. 123 allows entities to continue to apply the provisions
of APB Opinion No. 25 and provide pro forma net income and pro forma earnings
per share disclosures for employee stock option grants made in 1995 and future
years as if the fair-value-based method defined in SFAS No. 123 had been
applied. The Company has elected to continue to apply the provisions of APB
Opinion No. 25 and provide the pro forma disclosure provisions of SFAS No. 123
commencing in its June 30, 1997 financial statements.
 
INCOME TAXES
 
    The Company uses the liability method of accounting for income taxes. Under
this method, deferred tax assets and liabilities are determined based on
differences between financial reporting and tax bases of assets and liabilities
and are measured using the enacted tax rate and laws that will be in effect when
the differences are expected to reverse.
 
    The provision for income taxes includes federal, foreign, state and local
income taxes currently payable and those deferred because of temporary
differences between the financial statement and tax bases of assets and
liabilities.
 
FAIR VALUE
 
    The Company believes that the carrying amounts of its financial instruments
included in current assets and current liabilities approximate the fair value of
such items due to their short-term nature. The carrying amount of long-term
notes payable approximates their fair value because interest rates approximate
market.
 
ESTIMATES
 
    Management of the Company has made a number of estimates and assumptions
relating to the reporting of assets and liabilities and the disclosure of
contingent assets and liabilities to prepare this balance sheet in conformity
with generally accepted accounting principles. Actual results could differ from
those estimates.
 
                                      F-35
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
                      YEARS ENDED JUNE 30, 1995, 1996 AND
                  1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
NET INCOME PER SHARE
 
    In February 1997, the FASB issued Statement of Financial Accounting
Standards No. 128, Earnings per Share ("SFAS 128"). SFAS 128 establishes new
standards for computing and presenting earnings per share ("EPS") amounts for
companies with publicly held common stock. The new standards require the
presentation of both basic and diluted EPS amounts for companies with complex
capital structures. Basic EPS is computed by dividing income available to common
stockholders by the weighted-average number of common shares outstanding for the
period, and excludes the effect of potentially dilutive securities (such as
options, warrants and convertible securities) which are converted into common
stock. Dilutive EPS reflects the potential dilution related to the incremental
shares from such convertible securities. Incremental shares of 10,551, 10,551,
and 24,953 for the years ended June 30, 1995, 1996, and 1997, respectively were
used in the calculation of diluted EPS. Incremental shares of 35,210 and 170,910
for the six-month periods ended December 31, 1996 and 1997, respectively, were
used in the calculation of diluted EPS.
 
    Effective October 1, 1997, the Company adopted the requirements of SFAS 128
and has presented basic and diluted EPS for all periods presented.
 
    On November 1, 1995, the Board of Directors declared a two hundred- for-one
common stock split effective November 1, 1995. All share amounts and numbers of
shares have been restated to reflect the stock split.
 
(2) COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS
 
<TABLE>
<CAPTION>
                                                                           JUNE 30,     JUNE 30,     DECEMBER 31,
                                                                             1996         1997           1997
                                                                          ----------  -------------  ------------
<S>                                                                       <C>         <C>            <C>
Costs incurred on uncompleted contracts.................................  $  271,100  $     958,295   $  381,074
Estimated earnings......................................................     127,332        315,106      281,869
                                                                          ----------  -------------  ------------
                                                                             398,432      1,273,401      662,943
Less billings to date...................................................     311,649      1,116,092      754,965
                                                                          ----------  -------------  ------------
                                                                          $   86,783  $     157,309   $  (92,022)
                                                                          ----------  -------------  ------------
                                                                          ----------  -------------  ------------
</TABLE>
 
    Included in accompanying balance sheets under the following captions:
 
<TABLE>
<CAPTION>
                                                                             JUNE 30,    JUNE 30,    DECEMBER 31,
                                                                               1996        1997          1997
                                                                            ----------  -----------  ------------
<S>                                                                         <C>         <C>          <C>
Costs and estimated earnings in excess of billings on uncompleted
  contracts...............................................................  $  135,675  $   242,862   $   --
Billings in excess of costs and estimated earnings on uncompleted
  contracts...............................................................     (48,892)     (85,553)     (92,022)
                                                                            ----------  -----------  ------------
                                                                            $   86,783  $   157,309   $  (92,022)
                                                                            ----------  -----------  ------------
                                                                            ----------  -----------  ------------
</TABLE>
 
                                      F-36
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(3) INVESTMENT IN KENWOOD SYSTEMS GROUP
 
    In September 1997, the Company sold its ownership in Kenwood Systems Group,
Inc. (KSG), a California corporation. Prior to the date of sale, the Company
owned 50% of the voting common stock, with the remaining 50% of the voting
common stock owned by Kenwood Americas Corporation (KAC). The results of
operations from July 1, 1997 through the date of sale (September 30, 1997) of
KSG have been reflected in the Company's operating results. The Company and KAC
were the original owners of KSG, which began operations on May 1, 1994. The
Company recorded a gain on the sale of KSG of $66,226.
 
    The investment was recorded using the equity method in which the original
investment, adjusted for the Company's proportionate share of KSG's income,
losses and dividend distributions, was recorded as a long-term investment. The
Company's original investment in KSG was $200,000. An additional investment of
$50,000 was made during the year ended June 30, 1997. The Company's
proportionate share of KSG's (losses)/earnings for the years ended June 30,
1995, 1996 and 1997 and for the six months ended December 31, 1997 were
$105,829, $(25,873), $81,221 and $34,662, respectively.
 
    The Company received a management fee from KSG equal to 2% of gross sales
that was paid quarterly. For the years ended June 30, 1995, 1996 and 1997 and
the six months ended December 31, 1997, the Company earned a management fee of
$59,995, $58,253, $82,476 and $25,406, respectively. In addition, KSG was
covered by worker's compensation, property, medical, dental and general
liability insurance policies maintained by the Company. KSG also purchased
various supplies and computer equipment from the Company from time to time.
Employees of KSG were eligible to participate in a 401(k) plan maintained by the
Company. Billings by the Company to KSG for the years ended June 30, 1996 and
1997 and the six months ended December 31, 1997 for insurance, supplies,
equipment and management fees totaled approximately $128,178, $199,000 and
$75,000, respectively. At June 30, 1995, 1996 and 1997, $22,849, $73,234 and
$67,074, respectively, is included on the accompanying balance sheet as account
receivable-affiliate which is due from KSG.
 
    Pertinent financial data (unaudited) of KSG, for the years ended June 30,
1995, 1996 and 1997 and the six months ended December 31, 1997 is as follows:
 
<TABLE>
<CAPTION>
                                                      YEARS ENDED JUNE 30,               SIX MONTHS
                                            ----------------------------------------        ENDED
                                                1995          1996          1997      DECEMBER 31, 1997
                                            ------------  ------------  ------------  -----------------
<S>                                         <C>           <C>           <C>           <C>
Total assets at period end................  $  1,095,449  $  1,248,217  $  1,812,491    $    --
                                            ------------  ------------  ------------  -----------------
                                            ------------  ------------  ------------  -----------------
Stockholders' equity at period end........  $    646,053  $    594,307  $    869,745    $    --
                                            ------------  ------------  ------------  -----------------
                                            ------------  ------------  ------------  -----------------
Revenues..................................  $  2,999,745  $  2,912,637  $  4,121,335    $   1,206,966
                                            ------------  ------------  ------------  -----------------
                                            ------------  ------------  ------------  -----------------
Net earnings (loss).......................  $    211,660  $    (51,746) $    159,115    $      69,324
                                            ------------  ------------  ------------  -----------------
                                            ------------  ------------  ------------  -----------------
</TABLE>
 
                                      F-37
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(4) ALLOWANCE FOR DOUBTFUL ACCOUNTS
 
    The activity in the allowance for doubtful accounts is as follows:
 
<TABLE>
<CAPTION>
                                                        BALANCE AT   CHARGED TO   WRITE-OFFS   BALANCE AT
                                                       BEGINNING OF   COSTS AND     NET OF     THE END OF
                                                          PERIOD      EXPENSES    RECOVERIES     PERIOD
                                                       ------------  -----------  -----------  -----------
<S>                                                    <C>           <C>          <C>          <C>
Year ended June 30, 1995.............................   $   85,000    $  29,510    $ (86,529)   $  27,981
Year ended June 30, 1996.............................      (27,981)      46,532       --           74,513
Year ended June 30, 1997.............................       74,513       26,423       --          100,936
Six months ended December 31, 1997...................      100,936       39,677       --          140,613
</TABLE>
 
(5) PROPERTY, PLANT AND EQUIPMENT
 
    Property, plant and equipment at June 30, 1996 and 1997 and December 31,
1997 was as follows:
 
<TABLE>
<CAPTION>
                                                               JUNE 30,      JUNE 30,     DECEMBER 31,
                                                                 1996          1997           1997
                                                             ------------  -------------  -------------
<S>                                                          <C>           <C>            <C>
Assets:
  Land.....................................................  $     41,046  $      41,046  $      41,046
  Equipment for rent/lease.................................     6,355,557      9,743,043     12,003,374
  Building and improvements................................       456,355        767,327        796,198
  Computer, office and test equipment......................       889,326      1,919,700      2,321,238
  Vehicles.................................................       475,353        570,716        516,693
  Furniture and fixtures...................................       167,901        304,116        335,054
  Construction in process..................................       --             935,234      4,373,499
                                                             ------------  -------------  -------------
                                                                8,385,538     14,281,182     20,387,102
Accumulated depreciation and amortization:
  Equipment for rent/lease.................................     3,316,813      4,285,492      4,989,079
  Building and improvements................................       144,548        170,631        187,598
  Computer, office and test equipment......................       100,283        268,159        396,380
  Vehicles.................................................       234,601        306,219        310,635
  Furniture and fixtures...................................        98,618        134,328        155,340
                                                             ------------  -------------  -------------
                                                                3,894,863      5,164,829      6,039,032
                                                             ------------  -------------  -------------
Net property, plant and equipment..........................  $  4,490,675  $   9,116,353  $  14,348,070
                                                             ------------  -------------  -------------
                                                             ------------  -------------  -------------
</TABLE>
 
(6) SEGMENT AND GEOGRAPHIC INFORMATION
 
    The Company operates in one industry segment: provision of advanced
communication solutions. The Company markets and sells its products and services
in the United States and in foreign countries through its direct sales
organization.
 
    The following table presents information about the Company by geographic
area. Export sales and certain income and expense items are reported in the
geographic area where the transaction originates. Substantially all identifiable
assets of the Company are held in the United States.
 
                                      F-38
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(6) SEGMENT AND GEOGRAPHIC INFORMATION (CONTINUED)
    All significant transactions and agreements of the Company are conducted in
U.S. dollars; therefore, no foreign currency translation gains or losses are
included in the accompanying financial statements.
 
<TABLE>
<CAPTION>
                                                                            NORTH
                                                                           AMERICA    RUSSIA      OTHER      TOTAL
                                                                          ---------  ---------  ---------  ---------
                                                                                        (IN THOUSANDS)
<S>                                                                       <C>        <C>        <C>        <C>
For the year ended June 30,
  1995:
    Revenues............................................................  $  11,956  $   3,262  $     576  $  15,794
    Operating income (loss).............................................        520        190        225        935
    Identifiable assets.................................................      8,232     --         --          8,232
  1996:
    Revenues............................................................     25,306      2,281        209     27,796
    Operating income (loss).............................................        908        436        (66)     1,278
    Identifiable assets.................................................     12,409     --         --         12,409
  1997:
    Revenues............................................................     27,457      2,323        562     30,342
    Operating income (loss).............................................        578        555        224      1,357
    Identifiable assets.................................................     26,062     --         --         26,062
For the six months ended December 31, 1997:
  Revenues..............................................................      9,701        780      1,482     11,963
  Operating income (loss)...............................................        397        123        274        794
  Identifiable Assets...................................................     26,284     --         --         26,284
</TABLE>
 
(7) NOTES PAYABLE AND FINANCING ARRANGEMENTS
 
    Borrowing under the Company's credit facility and long-term notes payable
consists of the following:
 
<TABLE>
<CAPTION>
                                                                                  JUNE 30,
                                                                         --------------------------  DECEMBER 31,
                                                                             1996          1997          1997
                                                                         ------------  ------------  ------------
<S>                                                                      <C>           <C>           <C>
Borrowing under a revolving credit facility, bearing interest at LIBOR
  plus 2.4% (8.12% at December 31, 1997), due in October 1998, secured
  by specific underlying accounts receivable, equipment and inventory.
  Maximum borrowings are $5,000,000 under the facility. The weighted
  average interest rate was 8.12% for the six months ended December 31,
  1997.................................................................  $    --       $    --        $4,123,279
Borrowings under a revolving credit facility, bearing interest at prime
  plus .75%. Facility was fully paid and closed in August 1997.........     1,426,598     4,521,024       --
Note payable to bank, principal and interest due monthly in the amount
  of $25,707, interest at 30-day LIBOR plus 2.4% (8.12% at December 31,
  1997), due in December 1999, secured by underlying lease equipment...       --            --           539,589
</TABLE>
 
                                      F-39
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(7) NOTES PAYABLE AND FINANCING ARRANGEMENTS (CONTINUED)
 
<TABLE>
<CAPTION>
                                                                                  JUNE 30,
                                                                         --------------------------  DECEMBER 31,
                                                                             1996          1997          1997
                                                                         ------------  ------------  ------------
<S>                                                                      <C>           <C>           <C>
Note payable to bank, principal and interest due monthly in the amount
  of $36,053, interest at 30-day LIBOR plus 2.4% (8.12% at December 31,
  1997), due in May 2000, secured by underlying lease equipment........       --            --           745,939
Note payable to bank, principal and interest due in the amount of
  $46,939, interest at 8.5%, due in June 2000, secured by underlying
  lease equipment......................................................       --            --           987,000
Note payable to bank, varying principal and interest due monthly
  ($29,567 at December 31, 1997), interest at 30-day LIBOR plus 2.4%
  (8.12% at December 31, 1997), due in September 2001, secured by
  underlying lease equipment...........................................       --            --           989,062
Note payable to bank, principal and interest due monthly in the amount
  of $22,500, interest at 9.0%, due in November 2001, secured by
  specific underlying equipment........................................       --          1,192,500      979,561
Note payable to financing company, principal and interest due monthly
  in the amount of $9,200, interest at 6.75%, due in June 2007, secured
  by specific underlying equipment.....................................       --            801,248      772,690
Note payable to bank, principal due monthly in the amount of $15,833,
  plus interest at prime plus .75%. Note was fully paid in August
  1997.................................................................       870,835       680,839       --
Note payable to bank, principal due monthly in the amount of $24,306,
  plus interest at prime plus 1%. Note was fully paid in December
  1997.................................................................       440,233       101,598       --
Note payable to leasing company, principal and interest due monthly in
  the amount of $13,699, interest at 10.7%, due in February 1998,
  secured by specific underlying equipment.............................       247,040       102,428       24,260
Note payable to mortgage company, varying principal and interest due
  monthly ($1,955 at December 31, 1997), principal and interest
  adjusted quarterly to prime plus 2.5% (11.0% at December 31, 1997),
  due in April 2015, secured by specific underlying property...........       185,462       182,702      180,328
Note payable to leasing company, principal and interest due monthly in
  the amount of $5,595, interest at 9%, due in December 1998, secured
  by specific underlying equipment.....................................       149,963        94,069       64,214
Note payable to finance company, principal and interest due monthly in
  the amount of $3,180, interest at 10.2%, due in February 2000,
  secured by specific underlying equipment.............................       108,657        81,655       64,482
Note payable to bank, principal due monthly in the amount of 2.1% of
  the amount outstanding plus interest at prime plus .75%. Note was
  fully paid in August 1997............................................        90,473       500,000       --
</TABLE>
 
                                      F-40
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(7) NOTES PAYABLE AND FINANCING ARRANGEMENTS (CONTINUED)
 
<TABLE>
<CAPTION>
                                                                                  JUNE 30,
                                                                         --------------------------  DECEMBER 31,
                                                                             1996          1997          1997
                                                                         ------------  ------------  ------------
<S>                                                                      <C>           <C>           <C>
Note payable to bank, principal due monthly in the amount of $10,556
  plus interest at prime plus 1%. Note was fully paid in February
  1997.................................................................        84,444       --            --
Note payable to leasing company, principal and interest due monthly in
  the amount of $4,831, interest at 10%. Note was fully paid in
  December 1997........................................................        84,210        32,272       --
Note payable to finance company, principal and interest due monthly in
  the amount of $1,916, interest at 8.8%, due in June 1999, secured by
  specific underlying equipment........................................        56,203        37,258       27,168
Notes payable to individuals, who are employees and relatives of the
  principal shareholder, principal and interest due monthly in the
  amount of $4,296, interest rates ranging from 9%-12%, due in August
  2001, unsecured......................................................        54,818        43,693       39,460
Note payable to bank, principal and interest due monthly in the amount
  of $8,959, interest at 6.98%. Note was fully paid in December 1996...        52,694       --            --
Note payable to benefit plan, principal and interest due monthly in the
  amount of $5,500, interest at 10%. Note was fully paid in February
  1997.................................................................        43,399       --            --
Notes payable to bank, principal and interest due monthly in the amount
  of $1,090, interest at 8.5%, due in March 1998, secured by
  vehicles.............................................................        19,735         7,885        2,113
Note payable to finance company, principal and interest due monthly in
  the amount of $499, interest at 12.1%, due in June 1999, secured by
  specific underlying equipment........................................        14,777        10,652        8,213
Notes payable to finance company, principal and interest due monthly in
  the amount of $3,520, interest at 8.5%, due in September 1999,
  secured by specific underlying equipment.............................       --             83,589       65,706
Note payable to bank, principal and interest due monthly in the amount
  of $1,220, interest at prime plus .75%. Note was fully paid in August
  1997.................................................................       --            168,198       --
Other..................................................................        12,200        14,317       10,313
                                                                         ------------  ------------  ------------
                                                                            3,941,741     8,655,927    9,623,377
Less current portion...................................................       997,904       963,595    6,035,069
                                                                         ------------  ------------  ------------
  Total long-term debt.................................................  $  2,943,837  $  7,692,332   $3,588,308
                                                                         ------------  ------------  ------------
                                                                         ------------  ------------  ------------
</TABLE>
 
                                      F-41
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(7) NOTES PAYABLE AND FINANCING ARRANGEMENTS (CONTINUED)
    The following is a summary of maturities of notes payable and financing
arrangements at December 31, 1997 during the next five years:
 
<TABLE>
<CAPTION>
YEAR ENDED
DECEMBER 31,
- ------------------------------------------------------------------------------------------
<S>                                                                                         <C>
1998......................................................................................  $  6,035,069
1999......................................................................................     1,766,429
2000......................................................................................       722,406
2001......................................................................................       431,754
2002......................................................................................        84,610
Thereafter................................................................................       583,109
                                                                                            ------------
  Total...................................................................................  $  9,623,377
                                                                                            ------------
                                                                                            ------------
</TABLE>
 
    The Company's secured revolving line of credit allows the Company to borrow
up to a maximum of $5.0 million subject to a borrowing base based on accounts
receivable and inventory. The Company also has a secured guidance line of credit
that allows the Company to borrow up to $5.0 million to finance the Company's
purchase and subsequent lease of communication equipment. The interest rate on
both lines is at the Company's option, the lending bank's base rate or 30, 60 or
90 day adjusted LIBOR plus 2.4% (8.12% at December 31, 1997). The lines of
credit are secured by specific underlying accounts receivable, equipment and
inventory. The lines of credit provide for certain reporting and financial
covenants including minimum net worth and maximum debt to net worth
requirements. The Company was in compliance with such covenants at December 31,
1997. The guidance line of credit is due on May 1, 1998. The Company had $5.0
million available under the guidance line of credit at December 31, 1997.
 
    Under the terms of the Company's revolving credit facility, the Company may
not pay dividends without prior consent of the lending bank.
 
    The Company capitalized financing costs of $79,981 for the six months ended
December 31, 1997 and is amortizing such costs over the life of the respective
loan. These financing costs are included in other assets on the balance sheet.
Amortization expense for the six months ended December 31, 1997 amounted to
$38,651.
 
(8) INCOME TAXES
 
    Income tax expense attributable to income consists of:
 
<TABLE>
<CAPTION>
                                                           YEAR ENDED JUNE 30,         SIX MONTHS ENDED
                                                     --------------------------------    DECEMBER 31,
                                                        1995       1996       1997           1997
                                                     ----------  ---------  ---------  -----------------
<S>                                                  <C>         <C>        <C>        <C>
United States Federal
  Current income tax expense.......................  $  214,654    175,404     59,989        115,080
  Deferred income tax expense......................      78,903     (9,528)    81,607         65,181
Foreign--current income tax expense................      --        149,832    141,410         84,239
                                                     ----------  ---------  ---------        -------
                                                     $  293,557    315,708    283,006        264,500
                                                     ----------  ---------  ---------        -------
                                                     ----------  ---------  ---------        -------
</TABLE>
 
                                      F-42
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(8) INCOME TAXES (CONTINUED)
 
    Foreign income tax expense results from taxes withheld on sales related to
the Russian operations. Operating income from such operations for the years
ended June 30, 1995, 1996 and 1997 and the six months ended December 31, 1997
were $190,000, $436,000, $555,000 and $123,000, respectively.
 
    The tax effects of temporary differences that give rise to significant
portions of the deferred tax assets and deferred tax liabilities at June 30,
1996 and 1997 and December 31, 1997 are presented below:
 
<TABLE>
<CAPTION>
                                                                                    JUNE 30
                                                                            -----------------------  DECEMBER 31,
                                                                               1996         1997         1997
                                                                            -----------  ----------  ------------
<S>                                                                         <C>          <C>         <C>
Deferred tax assets:
  Accounts receivable, due to allowance for doubtful accounts.............  $    25,335      34,317       47,808
  Accrued vacation pay....................................................       30,497      27,200       27,200
  Deferred revenue........................................................       41,521      12,467        7,142
  Alternative minimum tax credit carryforward.............................       74,918     105,267      116,958
  Foreign tax credit......................................................      --           63,066       25,600
  Equity in losses of affiliates..........................................        8,796      --           --
                                                                            -----------  ----------  ------------
    Total deferred tax assets.............................................      181,067     242,317      224,708
 
Deferred tax liabilities:
  Property, plant and equipment...........................................     (250,442)   (381,170)    (440,871)
  Equity in income of affiliates..........................................      --          (12,130)      --
                                                                            -----------  ----------  ------------
    Total deferred tax liabilities........................................     (250,442)   (393,300)    (440,871)
                                                                            -----------  ----------  ------------
    Net deferred tax liability............................................  $   (69,375)   (150,983)    (216,163)
                                                                            -----------  ----------  ------------
                                                                            -----------  ----------  ------------
</TABLE>
 
    There was no valuation allowance on deferred tax assets as of June 30, 1996
and 1997 and December 31, 1997, as management has determined that it is more
likely than not that these tax assets will be realized.
 
    The Company also has alternative minimum tax credit carryforwards of
$116,958 at December 31, 1997 which are available to reduce future federal
regular income taxes, if any, over an indefinite period.
 
    The difference between the actual income tax provision and the tax provision
computed by applying the statutory Federal income tax rate to income before
taxes is attributable to the following:
 
<TABLE>
<CAPTION>
                                                                                                      SIX MONTHS
                                                                          YEAR ENDED JUNE 30            ENDED
                                                                   --------------------------------  DECEMBER 31,
                                                                      1995       1996       1997         1997
                                                                   ----------  ---------  ---------  ------------
<S>                                                                <C>         <C>        <C>        <C>
Income tax provision at 34%......................................  $  281,927    356,789    330,499      235,582
Expenses not deductible for tax purposes.........................      11,630     11,990      6,463       16,547
Effect of foreign operations, including foreign tax credits......      --        (53,071)   (53,956)     (19,451)
Sale of KSG......................................................      --         --         --           31,822
                                                                   ----------  ---------  ---------  ------------
Actual income tax provision......................................  $  293,557    315,708    283,006      264,500
                                                                   ----------  ---------  ---------  ------------
                                                                   ----------  ---------  ---------  ------------
Effective tax rate...............................................        35.4%      30.1%      29.1%        38.6%
                                                                   ----------  ---------  ---------  ------------
                                                                   ----------  ---------  ---------  ------------
</TABLE>
 
                                      F-43
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(9) EMPLOYEE BENEFITS
 
    The Company has a 401(k) profit sharing plan covering employees with six or
more months of tenure. The plan allows employee contributions of zero to 15% of
applicable employee wages. The Company makes matching contributions to the plan
as a percentage of the employee's contribution. The Company's contribution is
subject to the employee meeting certain vesting requirements. The Company's net
contributions to the plan (after forfeitures) for the years ended June 30, 1995,
1996, and 1997 the six months ended December 31, 1997 were $23,367, $30,287,
$15,035 and $31,035, respectively.
 
(10) INCENTIVE STOCK OPTION PLANS
 
    During the year ended June 30, 1996, the Company adopted an Employee
Incentive Stock Option Plan (the Plan). The Plan provides for the granting of a
maximum of 258,600 options to purchase shares of common stock to key employees
of the Company. The option price per share may not be less than the fair market
value of a share on the date the option is granted. Options generally vest at
the rate of 20% per year over a five year period, however, the Board at its
discretion may accelerate the vesting schedule. All options under the Plan
granted on or prior to the IPO date, June 12, 1997, vested in full on the
offering date. Stock options will expire ten years from the date of grant.
 
    As of December 31, 1997, there were options for 146,695 shares granted under
the Plan with option prices ranging from $3.56 to $4.49. All options granted
were outstanding and exercisable at December 31, 1997. On December 31, 1997,
there were 111,905 additional shares available for grant under the plan.
 
    The Company adopted a 1997 Stock Option Plan and a 1997 Director Stock
Option Plan in February 1997 (the Plans). Options granted under the 1997 Stock
Option Plan may be either Incentive Stock Options or non-statutory stock options
under the Code. Incentive Stock Options may be granted under the 1997 Stock
Option Plan to any person who is an officer or other employee of the Company or
any of its subsidiaries. The 1997 Director Stock Option Plan was adopted to
encourage ownership of the Company by eligible non-employee directors. All
options granted will be non-qualified and not eligible for treatment as
Incentive Stock Options under Section 422 of the Code. A total of 300,000 and
100,000 shares of Common Stock have been reserved for issuance upon the exercise
of options which may be granted under the 1997 Stock Option Plan and the 1997
Director Stock Opiton Plan, respectively.
 
    As of December 31, 1997, there were options for 197,350 shares granted under
the 1997 Stock Option and 1997 Director Stock Option Plans with option prices
ranging from $6.00 to $9.50. All options granted
 
                                      F-44
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(10) INCENTIVE STOCK OPTION PLANS (CONTINUED)
were outstanding and none were exercisable at December 31, 1997. On December 31,
1997, there were 202,650 additional shares available for grant under the Plans.
 
<TABLE>
<CAPTION>
                                                                                                      SIX MONTHS
                                                                                                        ENDED
                                          YEAR ENDED                    YEAR ENDED                   DECEMBER 31,
                                        JUNE 30, 1997                 JUNE 30, 1996                      1997
                                 ----------------------------  ----------------------------  ----------------------------
                                                 WEIGHTED-                     WEIGHTED-                     WEIGHTED-
                                  NUMBER OF       AVERAGE       NUMBER OF       AVERAGE       NUMBER OF       AVERAGE
                                   SHARES     EXERCISE PRICE     SHARES     EXERCISE PRICE     SHARES     EXERCISE PRICE
                                 -----------  ---------------  -----------  ---------------  -----------  ---------------
<S>                              <C>          <C>              <C>          <C>              <C>          <C>
Options outstanding at
  beginning of year............      --          $  --            152,836      $    3.59        310,514      $    4.77
Options granted................     152,836           3.59        157,678           5.91         47,750           6.16
Options exercised..............      --             --             --             --            (13,919)          3.56
Options forfeited..............      --             --             --             --               (300)          6.00
                                 -----------         -----     -----------         -----     -----------         -----
Options outstanding at end of
  year.........................     152,836           3.59        310,514           4.77        344,045           5.01
                                 -----------         -----     -----------         -----     -----------         -----
                                 -----------         -----     -----------         -----     -----------         -----
Options exercisable at end of
  year.........................      --             --            160,614           3.62        146,695           3.63
                                 -----------         -----     -----------         -----     -----------         -----
                                 -----------         -----     -----------         -----     -----------         -----
</TABLE>
 
    A summary of options outstanding as of December 31, 1997 is as follows:
 
<TABLE>
<CAPTION>
              NUMBER OF       WEIGHTED-AVERAGE        NUMBER OF
 EXERCISE      OPTIONS      REMAINING CONTRACTUAL      OPTIONS
   PRICE     OUTSTANDING            LIFE             EXERCISABLE
- -----------  -----------  -------------------------  -----------
<S>          <C>          <C>                        <C>
   $3.56        136,140                 8.0             136,140
   4.49          10,555                 8.4              10,555
   6.00         186,600                 9.5              --
   6.25           5,000                 9.7              --
   6.75           5,000                 9.8              --
   9.50             750                 9.8              --
                                         --
             -----------                             -----------
                344,045                 8.9             146,695
                                         --
                                         --
             -----------                             -----------
             -----------                             -----------
</TABLE>
 
    The per share weighted-average value of stock options granted during the
years ended June 30, 1996 and 1997 and the six months ended December 31, 1996
(unaudited) and 1997 were $.24, $.35, $.79 and $2.61, respectively, on the date
of grant, using the Black Scholes model with the following assumptions:
risk-free interest rate of 5.77% for the 1996 options and 5.89% for the 1997
options, expected life of 2 to 3 years, expected volatility of 55%, and no
expected dividend yield.
 
    The Company applies APB Opinion No. 25 in accounting for its Plan and,
accordingly, no compensation cost has been recognized for its stock options in
the consolidated financial statements. Had the Company determined compensation
cost based on the fair value at the grant date for its stock options
 
                                      F-45
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(10) INCENTIVE STOCK OPTION PLANS (CONTINUED)
under SFAS No. 123, the Company's net income would have been reduced to the pro
forma amounts indicated below:
 
<TABLE>
<CAPTION>
                                                             YEARS ENDED              SIX MONTHS ENDED
                                                               JUNE 30                  DECEMBER 31,
                                                        ----------------------  ----------------------------
                                                          1996        1997                          1997
                                                        ---------     -----          1996           -----
                                                                                ---------------
                                                                                  (UNAUDITED)
                                                               (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                     <C>        <C>          <C>              <C>
Net income
  As reported.........................................  $     734         689            260            421
  Pro Forma...........................................  $     729         592            247            364
Earnings per share (diluted)
  As reported.........................................  $     .33         .30            .12            .11
  Pro Forma...........................................  $     .33         .25            .11            .09
</TABLE>
 
(11) LEASE CONTRACTS
 
    The Company provides telecommunications services to various customers under
operating leases with typical terms of one to five years. The services may
include communications equipment, line/satellite charges and/or maintenance
charges. These leases impose certain obligations on both the lessor and lessee
which must be met during the term of the lease.
 
    A significant portion of these services requires that the Company have
access to international communication satellites. The Company has contracted
with a Russian entity for rights to access its portion of an international
communications satellite. The Company has agreed to pay a recurring monthly fee
to the entity based on the amount of satellite space segment utilized by each
lessee. Additionally, the Company has sold communication equipment to the
entity. The Company utilizes those facilities to provide communication services
to various United States energy oil and gas companies and other customers doing
business in Russia.
 
    The following is a summary of the expected revenue to be earned during the
next five years by the Company on lease agreements executed on or before
December 31, 1997:
 
<TABLE>
<CAPTION>
YEAR ENDED
DECEMBER 31
- --------------------------------------------------------------------------------
<S>                                                                               <C>
1998............................................................................  $  3,821,383
1999............................................................................     2,420,810
2000............................................................................     2,033,177
2001............................................................................       908,116
2002............................................................................       247,552
Thereafter......................................................................       --
                                                                                  ------------
  Total.........................................................................  $  9,431,038
                                                                                  ------------
                                                                                  ------------
</TABLE>
 
                                      F-46
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(12) COMMITMENTS
 
    The Company leases office space, equipment and communication services for
its operations under leases expiring through 2005. Rental expense under the
leases for the years ended June 30, 1995, 1996 and 1997 and the six months ended
December 31, 1997 was $348,184, $555,033, $896,354 and $699,497, respectively.
 
    Future minimum lease payments as of December 31, 1997 are as follows:
 
<TABLE>
<CAPTION>
YEAR ENDED
DECEMBER 31
- --------------------------------------------------------------------------------
<S>                                                                               <C>
1998............................................................................  $  2,669,054
1999............................................................................     1,772,903
2000............................................................................     1,304,659
2001............................................................................     1,116,553
2002............................................................................       665,595
Thereafter......................................................................       568,250
                                                                                  ------------
  Total.........................................................................  $  8,097,014
                                                                                  ------------
                                                                                  ------------
</TABLE>
 
(13) STOCKHOLDERS' EQUITY
 
    (a) Preferred Stock
 
    The Company has authorized 10,000,000 shares of preferred stock which may be
issued by the Board of Directors in one or more series and the Board is
authorized to fix the designations, relative powers, preferences, rights,
qualifications, limitations and restrictions of all shares of each of such
series, including without limitation dividend rates, preemptive rights,
conversion rights, voting rights, redemption and sinking fund provisions,
liquidation preferences and the number of shares constituting each such series,
without any further vote or action by the shareholders. The Company's Articles
of Incorporation grant the Board of Directors power to establish the rights,
preferences and privileges of authorized and unissued preferred stock. The
issuance of shares of preferred stock pursuant to the Board of Director's
authority described above could decrease the amount of earnings and assets
available for distribution to holders of common stock.
 
    (b) Common Stock
 
    The Company amended and restated its Articles of Incorporation in March,
1997 to restate the common stock authorized, issued and outstanding from no par
value to a $0.01 par value per common share. All share amounts have been
restated to reflect this amendment.
 
    The Company completed an initial public offering (IPO) of common stock on
June 12, 1997, issuing 1,450,000 shares at $6.00 per share. The proceeds, net of
commissions and expenses, from this IPO totaled $6,996,505. In July 1997 the
Underwriters exercised an overallotment option and purchased an additional
62,496 shares resulting in net proceeds of $337,473.
 
                                      F-47
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
 
YEARS ENDED JUNE 30, 1995, 1996 AND 1997 AND SIX MONTHS ENDED DECEMBER 31, 1997
 
(13) STOCKHOLDERS' EQUITY (CONTINUED)
    (c) Representative's Warrant
 
    The Company agreed to sell to the Representative or its designees, for
nominal consideration, the Representative's Warrant to purchase up to 145,000
shares of Common Stock at an exercise price equal to 120% of the IPO price. The
Representative has certain demand and "piggy-back" registration rights that may
require the Company to register for resale the shares of Common Stock issuable
under the Representative's Warrant. The Representative's Warrant is exercisable
for a period of four years, beginning June 12, 1998.
 
(14) SUBSEQUENT EVENTS
 
    The Company acquired Integrated Communications and Engineering Limited
("ICEL") on January 29, 1998 in a business combination accounted for under the
purchase method of accounting. The acquisition was for $2.7 million which
consisted of IWL common stock and cash.
 
    The Company announced in February 1998 that it had entered into a definitive
agreement to merge with CapRock Communications Corp. and CapRock Fiber Network,
Ltd.
 
    The Company was in violtion of the financial covenant requiring maintenance
of a current ratio as of March 31, 1998 and was in technical default of a
covenant requiring the lenders consent to the Transaction. The Company has
obtained a waiver for these covenant violations and has obtained the lender's
consent to the Transaction. In June 1998, the Company extended additional credit
under the Working Capital Loan by the lender of up to $4.0 million. The Working
Captial Loan will mature on the earlier of consummation of the Transaction or
August 31, 1998.
 
                                      F-48
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
                          CONSOLIDATED BALANCE SHEETS
                DECEMBER 31, 1997 AND MARCH 31, 1998 (UNAUDITED)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                                        DECEMBER 31,   MARCH 31,
                                                                                            1997         1998
                                                                                        ------------  -----------
<S>                                                                                     <C>           <C>
                                                                                                      (UNAUDITED)
Current assets:
  Cash and cash equivalents...........................................................   $3,345,312   $   719,906
  Accounts receivable:
    Trade, less allowance for doubtful accounts of $140,613 and $157,293,
     respectively.....................................................................    6,342,127     7,590,388
    Affiliate.........................................................................       30,344        68,816
    Other.............................................................................      239,298       395,996
  Inventory...........................................................................    1,022,927       998,036
  Deferred tax asset-current..........................................................      107,750       242,317
  Prepaid expenses and deposits.......................................................      447,067       924,068
                                                                                        ------------  -----------
      Total current assets............................................................   11,534,825    10,939,527
                                                                                        ------------  -----------
Property, plant and equipment.........................................................   20,387,102    23,243,370
  Accumulated depreciation............................................................   (6,039,032)   (6,573,100)
                                                                                        ------------  -----------
      Net property, plant and equipment...............................................   14,348,070    16,670,270
                                                                                        ------------  -----------
Other assets..........................................................................      400,681     2,223,752
                                                                                        ------------  -----------
      Total assets....................................................................   $26,283,576  $29,833,549
                                                                                        ------------  -----------
                                                                                        ------------  -----------
                                      LIABILITIES AND STOCKHOLDERS' EQUITY
 
Current liabilities:
  Notes payable-current portion.......................................................   $6,035,069   $ 6,354,081
  Trade accounts payable and accrued expenses.........................................    3,626,519     3,974,432
  Customer deposits...................................................................      171,972       360,347
  Federal income taxes payable........................................................      264,964       489,814
  Deferred revenue-current portion....................................................       14,667        15,549
  Billings in excess of costs and estimated earnings on uncompleted contracts.........       92,022       143,592
                                                                                        ------------  -----------
      Total current liabilities.......................................................   10,205,213    11,337,815
                                                                                        ------------  -----------
Notes payable, noncurrent portion.....................................................    3,588,308     3,947,862
Deferred revenue, noncurrent portion..................................................       --           --
Deferred income taxes.................................................................      323,913       413,071
                                                                                        ------------  -----------
      Total liabilities...............................................................   14,117,434    15,698,748
                                                                                        ------------  -----------
Stockholders' equity:
  Common stock, $.01 par value; 100,000,000 authorized, issued and outstanding
    3,754,230 and 3,968,607 shares, respectively......................................       37,542        39,686
  Additional paid-in capital..........................................................    7,601,589     9,172,572
  Retained earnings...................................................................    4,527,011     4,917,597
  Translation adjustment..............................................................       --             4,946
                                                                                        ------------  -----------
      Total stockholders' equity......................................................   12,166,142    14,134,801
                                                                                        ------------  -----------
Commitment and contingencies
      Total liabilities and stockholders' equity......................................   $26,283,576  $29,833,549
                                                                                        ------------  -----------
                                                                                        ------------  -----------
</TABLE>
 
           See condensed notes to consolidated financial statements.
 
                                      F-49
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                   THREE MONTHS ENDED MARCH 31, 1997 AND 1998
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                                           THREE MONTHS ENDED
                                                                                                MARCH 31,
                                                                                       ---------------------------
                                                                                           1997           1998
                                                                                       -------------  ------------
<S>                                                                                    <C>            <C>
Sales:
  Telecommunication services.........................................................  $   2,297,732  $  2,803,708
  Project/other revenue..............................................................      3,160,810     5,250,809
  Product resales....................................................................      2,506,455       --
                                                                                       -------------  ------------
    Total sales......................................................................      7,964,997     8,054,517
Cost of sales (exclusive of items shown separately below)............................      3,737,643     4,421,099
Cost of sales--product resales.......................................................      1,935,985       --
                                                                                       -------------  ------------
    Gross profit.....................................................................      2,291,369     3,633,418
Selling expenses.....................................................................        337,306       446,294
General and administrative expenses..................................................      1,273,686     1,741,051
Depreciation and amortization........................................................        347,185       647,330
                                                                                       -------------  ------------
Income from operations...............................................................        333,192       798,743
                                                                                       -------------  ------------
Other income and (expense):
  Interest expense, net..............................................................       (124,655)     (154,596)
  Other, net.........................................................................        113,841           548
                                                                                       -------------  ------------
Total other income (expense).........................................................        (10,814)     (154,048)
                                                                                       -------------  ------------
Income before income taxes...........................................................        322,378       644,695
Income tax expense...................................................................         94,531       254,109
                                                                                       -------------  ------------
Net income...........................................................................  $     227,847  $    390,586
                                                                                       -------------  ------------
                                                                                       -------------  ------------
Net income per share:
  Basic..............................................................................  $        0.10  $       0.10
                                                                                       -------------  ------------
                                                                                       -------------  ------------
  Diluted............................................................................  $        0.10  $       0.09
                                                                                       -------------  ------------
                                                                                       -------------  ------------
Weighted average shares outstanding:
  Basic..............................................................................      2,233,846     3,912,490
  Diluted............................................................................      2,297,526     4,198,922
</TABLE>
 
           See condensed notes to consolidated financial statements.
 
                                      F-50
<PAGE>
                   IWL COMMUNICATIONS, INC. AND SUBSIDIARIES
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
 
                   THREE MONTHS ENDED MARCH 31, 1997 AND 1998
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                                      THREE MONTHS   THREE MONTHS
                                                                                          ENDED          ENDED
                                                                                        MARCH 31,      MARCH 31,
                                                                                          1997           1998
                                                                                      -------------  -------------
<S>                                                                                   <C>            <C>
Cash flows from operating activities:
Net income..........................................................................  $     227,947  $     390,586
Adjustments to reconcile net income to net cash provided by (used in) operating
  activities:
Depreciation and amortization.......................................................        347,185        647,330
Gain from sale of assets............................................................        (46,551)          (548)
Deferred income taxes...............................................................         23,434        (45,409)
Equity in (earnings) loss of unconsolidated subsidiary..............................        (67,318)      --
Changes in operating assets and liabilities:
Accounts receivable.................................................................        559,479     (1,443,430)
Inventory...........................................................................       (365,131)       960,126
Costs and estimated earnings in excess of billings..................................       (109,475)      --
Prepaid expenses and deposits.......................................................         (7,231)      (477,001)
Other assets........................................................................         84,516        128,695
Trade accounts payable and accrued expenses.........................................        358,734        347,912
Customer deposits...................................................................        (11,960)       188,375
Deferred revenue....................................................................       (471,237)           882
Billings in excess of costs and estimated earnings..................................         (1,842)        51,570
Federal income taxes payable........................................................        (18,548)       224,850
                                                                                      -------------  -------------
Net cash provided by (used in) operating activities.................................        502,002        973,938
                                                                                      -------------  -------------
Cash flows from investing activities:
Purchase of property, plant, and equipment..........................................     (1,049,749)    (3,771,649)
Proceeds from disposal of property, plant, and equipment............................         60,125         73,300
Purchase of ICEL....................................................................       --             (609,822)
Proceeds from sale of KSG...........................................................        191,906       --
                                                                                      -------------  -------------
Net cash used in investing activities...............................................       (797,718)    (4,308,171)
                                                                                      -------------  -------------
Cash flows from financing activities:
Proceeds from debt..................................................................        786,703      4,277,227
Debt payments.......................................................................       (297,510)    (3,598,661)
Proceeds from issuance of common stock..............................................       --               25,315
Deferred offering costs.............................................................       (134,825)      --
                                                                                      -------------  -------------
Net cash provided by financing activities...........................................        354,368        703,881
                                                                                      -------------  -------------
Effect of foreign exchange rate on cash.............................................       --                4,946
Net increase (decrease) in cash for period..........................................         58,652     (2,625,406)
Cash and cash equivalents at beginning of period....................................        281,482      3,345,312
                                                                                      -------------  -------------
Cash and cash equivalents at end of period..........................................  $     340,134  $     719,906
                                                                                      -------------  -------------
                                                                                      -------------  -------------
Supplemental disclosures of cash flow information:
Cash paid during the year for interest..............................................  $     130,323  $     178,361
                                                                                      -------------  -------------
                                                                                      -------------  -------------
Cash paid during the year for income taxes..........................................  $    --        $      30,000
                                                                                      -------------  -------------
                                                                                      -------------  -------------
</TABLE>
 
           See condensed notes to consolidated financial statements.
 
                                      F-51
<PAGE>
                            IWL COMMUNICATIONS INC.
              CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
1.  GENERAL
 
    The information contained in the following notes to the consolidated
financial statements is condensed from that which would appear in the annual
consolidated financial statements; accordingly, the consolidated financial
statements included herein should be reviewed in conjunction with the
consolidated financial statements, and related notes thereto, of IWL
Communications Inc., included elsewhere herein. All references to the "Company"
include IWL Communications Inc. and its subsidiary companies unless otherwise
indicated or the context indicates otherwise.
 
    The consolidated financial statements included herein are unaudited;
however, they include all adjustments (consisting only of normal recurring
adjustments) which, in the opinion of management, are necessary to present
fairly the consolidated financial position of the Company at March 31, 1998 and
the consolidated results of operations and consolidated cash flows for the three
months ended March 31, 1997 and 1998. Accounting measurements at interim dates
inherently involve greater reliance on estimates than at year end. The results
of operations for the interim periods presented are not necessarily indicative
of the results to be expected for the entire year.
 
2.  EARNINGS PER SHARE
 
    In February 1997, the Financial Accounting Standards Board issued Statement
No. 128 ("FAS 128"), "Earnings Per Share". FAS 128 replaced the previously
reported primary and fully diluted earnings per share with basic and diluted
earnings per share. Unlike primary earnings per share, basic earning per share
excludes any dilutive effects of options, warrants, and convertible securities.
Diluted earnings per share is very similar to the previously reported fully
diluted earnings per share. All earnings per share amounts for all periods have
been presented, and where necessary, restated to conform to the Statement 128
requirements.
 
<TABLE>
<CAPTION>
                                                                                         THREE MONTHS ENDED MARCH
                                                                                                    31
                                                                                        --------------------------
                                                                                            1998          1997
                                                                                        ------------  ------------
<S>                                                                                     <C>           <C>
Numerator:
Net income (loss).....................................................................       227,847       390,586
                                                                                        ------------  ------------
                                                                                        ------------  ------------
Denominator:
Denominator for basic earnings per share--weighted-average shares outstanding.........     2,233,846     3,912,490
Effect of dilutive securities:
Employee stock options................................................................        63,680       286,432
                                                                                        ------------  ------------
Denominator for diluted earnings per share............................................     2,297,526     4,198,922
                                                                                        ------------  ------------
                                                                                        ------------  ------------
 
Basic earnings per share..............................................................           .10           .10
Diluted earnings per share............................................................           .10           .09
</TABLE>
 
3. ACQUISITIONS
 
    In January, the Company completed the acquisition of Integrated
Communications and Engineering, Ltd. ("ICEL"), a communications systems
integrator and maintenance provider in Aberdeen, Scotland. The Company paid a
total purchase price of approximately $2.5 million comprised of $382,000 in cash
and 207,266 shares of the Company's common stock.
 
                                      F-52
<PAGE>
    The acquisition was accounted for as a purchase and was effective as of
January 1, 1998, therefore, the statement of operations for the three months
ended March 31, 1998 reflects the operations of ICEL. The goodwill resulting
from the acquisition is being amortized over 7 and 20 years.
 
4. COMPREHENSIVE INCOME
 
    The Company has adopted the provisions of Statement of Financial Accounting
Standards ("SFAS No. 130"), Reporting Comprehensive Income, effective for fiscal
years beginning after December 15, 1997. SFAS No. 130 requires classification of
items of other comprehensive income by nature in a financial statement and a
breakout of the accumulated balance of other comprehensive income separately
from retained earnings and additional paid in capital in the equity section of a
statement of financial position. Reporting comprehensive income provides a
measure of all changes in equity that result from recognized transactions and
other economic events of the period other than transactions with owners in their
capacity as owners. Adoption of this statement did not have a material effect on
the Company's consolidated financial position or results of operation because
there are no material differences between net income and comprehensive income in
the Company's circumstances.
 
                                      F-53
<PAGE>
                          INDEPENDENT AUDITORS' REPORT
 
The Board of Directors and Shareholder of
CapRock Communications Corp.
(formerly IWL Holdings Corporation)
 
    We have audited the accompanying balance sheet of CapRock Communications
Corp. (formerly IWL Holdings Corporation) (a Texas corporation) as of March 31,
1998. This financial statement is the responsibility of the Company's
management. Our responsibility is to express an opinion on this financial
statement based on our audit.
 
    We conducted our audit in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit of a balance sheet includes examining, on a test basis,
evidence supporting the amounts and disclosures in that balance sheet. An audit
of a balance sheet also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
balance sheet presentation. We believe that our audit of the balance sheet
provides a reasonable basis for our opinion.
 
    In our opinion, the balance sheet referred to above presents fairly, in all
material respects, the financial position of the CapRock Communications Corp.
(formerly IWL Holdings Corporation) as of March 31, 1998, in conformity with
generally accepted accounting principles.
 
                                          KPMG Peat Marwick LLP
 
Dallas, Texas
June 18, 1998
 
                                      F-54
<PAGE>
                          CAPROCK COMMUNICATIONS CORP.
                      (FORMERLY IWL HOLDINGS CORPORATION)
 
                                 BALANCE SHEET
 
                                 MARCH 31, 1998
 
                                     ASSETS
 
<TABLE>
<S>                                                                                   <C>
Due from IWL Communications, Inc....................................................  $   2,000
                                                                                      ---------
                                                                                      ---------
 
                                     SHAREHOLDER'S EQUITY
 
Preferred stock--$.01 par value; 20,000,000 shares authorized, none issued..........  $  --
Common stock--$.01 par value; 200,000,000 shares authorized, 1,000 shares issued and
  outstanding.......................................................................         10
Additional paid-in capital..........................................................      1,990
                                                                                      ---------
  Total shareholder's equity........................................................  $   2,000
                                                                                      ---------
                                                                                      ---------
</TABLE>
 
See accompanying notes to balance sheet.
 
                                      F-55
<PAGE>
                          CAPROCK COMMUNICATIONS CORP.
                      (FORMERLY IWL HOLDINGS CORPORATION)
 
                             NOTES TO BALANCE SHEET
 
                                 MARCH 31, 1998
 
(1) GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
    (A) GENERAL
 
    CapRock Communications Corp. (formerly IWL Holdings Corporation) (the
"Company") was incorporated as a Texas corporation on February 3, 1998, to serve
as a holding company for the operations of CapRock Telecommunications Corp.
(formerly CapRock Communications Corp.), CapRock Fiber Network, Ltd. and IWL
Communications, Inc. after completion of their merger in conformance with the
provisions of their Agreement and Plan of Merger dated February 16, 1998.
 
    Effective February 3, 1998, IWL Communications, Inc. purchased 2,000 shares
of the common stock of the Company for an aggregate purchase price of $2,000,
for the purpose of completing the organization of the Company. On June 2, 1998,
the Company committed to purchase (i) from IWL Acquisition Corp., a Texas
corporation, 1,000 shares of the common stock, par value $.01 per share of IWL
Acquisition Corp. for an aggregate purchase price of $1,000 and (ii) from
CapRock Acquisition Corp., a Delaware corporation, 1,000 shares of the common
stock, par value $.01 per share of CapRock Acquisition Corp., Inc., for an
aggregate purchase price of $1,000.
 
    The Company's original stock issuance consisted of 1,000 shares of $.01 par
value common stock. The amount of shares authorized were 100,000,000. On June
18, 1998, the Company amended the Articles of Incorporation to adjust the number
of authorized shares from 100,000,000 shares to 200,000,000 shares. On June 3,
1998, IWL Communications, Inc. funded the initial capital contribution of
$2,000.
 
    The accompanying balance sheet presents the financial position of the
Company as of March 31, 1998. The Company has not commenced operations and does
not have any contingent liabilities or commitments, other than its commitments
to enter into the transactions related to the mergers described above.
 
                                      F-56
<PAGE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                                                                      APPENDIX I
 
                          AGREEMENT AND PLAN OF MERGER
 
                              AND PLAN OF EXCHANGE
 
                                     AMONG
 
                              IWL HOLDINGS CORP.,
 
                       IWL COMMUNICATIONS, INCORPORATED,
 
                             IWL ACQUISITION CORP.,
 
                         CAPROCK COMMUNICATIONS CORP.,
 
                           CAPROCK ACQUISITION CORP.
 
                                      AND
 
                          CAPROCK FIBER NETWORK, LTD.
 
                               FEBRUARY 16, 1998
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                                              PAGE
                                                                                                              -----
<S>         <C>                                                                                            <C>
ARTICLE I--THE MERGERS AND THE INTEREST EXCHANGE.........................................................           2
 
  1.1       The Mergers and the Interest Exchange........................................................           2
  1.2       Effective Time...............................................................................           2
  1.3       Effect of the Mergers and the Interest Exchange..............................................           3
  1.4       Articles of Incorporation: Bylaws............................................................           3
  1.5       Directors and Officers.......................................................................           3
  1.6       Shares to Be Issued in the Mergers and the Interest Exchange; Effect on Capital Stock........           3
  1.7       Dissenters' Shares...........................................................................           7
  1.8       No Further Ownership Rights in IWL Common Stock, Company Common Stock and Partnership
            Interests....................................................................................           7
  1.9       Tax Consequences and Accounting Treatment....................................................           7
 
ARTICLE II--REPRESENTATIONS AND WARRANTIES OF THE COMPANY................................................           8
 
  2.1       Organization and Qualification, Subsidiaries.................................................           8
  2.2       Articles of Incorporation and Bylaws.........................................................           8
  2.3       Capitalization...............................................................................           8
  2.4       Authority....................................................................................           9
  2.5       Company Financial Statements.................................................................          10
  2.6       No Undisclosed Liabilities...................................................................          10
  2.7       No Changes...................................................................................          10
  2.8       Tax and Other Returns and Reports............................................................          11
  2.9       Restrictions on Business Activities..........................................................          12
  2.10      Title of Properties; Absence of Liens and Encumbrances; Condition of Equipment...............          12
  2.11      Intellectual Property........................................................................          13
  2.12      Agreements, Contracts and Commitments........................................................          14
  2.13      Interested Party Transactions................................................................          16
  2.14      Governmental Authorizations..................................................................          16
  2.15      Litigation...................................................................................          16
  2.16      Accounts Receivable..........................................................................          16
  2.17      Minute Books and Stock Records...............................................................          16
  2.18      Environmental and OSHA.......................................................................          17
  2.19      Brokers' and Finders' Fees...................................................................          17
  2.20      Labor Matters................................................................................          18
  2.21      Insurance....................................................................................          18
  2.22      Inventory....................................................................................          18
  2.23      Compliance with Laws.........................................................................          18
  2.24      Registration Statement; Joint Proxy Statement................................................          19
  2.25      Accounting Matters...........................................................................          19
  2.26      FIRPTA.......................................................................................          19
  2.27      Employee Benefit Plans.......................................................................          19
  2.28      Ownership of Securities......................................................................          21
  2.29      Certain Regulatory Matters...................................................................          21
  2.30      Representations Complete.....................................................................          22
 
ARTICLE IIA--REPRESENTATIONS AND WARRANTIES OF THE PARTNERSHIP...........................................          22
 
  2A.1      Organization and Qualification, Subsidiaries.................................................          22
</TABLE>
 
                                       i
<PAGE>
<TABLE>
<CAPTION>
                                                                                                              PAGE
                                                                                                              -----
<S>         <C>                                                                                            <C>
  2A.2      Agreement of Limited Partnership.............................................................          22
  2A.3      Partnership Interests........................................................................          22
  2A.4      Authority....................................................................................          23
  2A.5      Partnership Financial Statements.............................................................          23
  2A.6      No Undisclosed Liabilities...................................................................          23
  2A.7      No Changes...................................................................................          23
  2A.8      Tax and Other Partnership Returns and Reports................................................          24
  2A.9      Restrictions on Business Activities..........................................................          25
  2A.10     Title of Properties; Absence of Liens and Encumbrances; Condition of Equipment...............          25
  2A.11     Intellectual Property........................................................................          26
  2A.12     Agreements, Contracts and Commitments........................................................          27
  2A.13     Interested Party Transactions................................................................          28
  2A.14     Governmental Authorizations..................................................................          29
  2A.15     Litigation...................................................................................          29
  2A.16     Accounts Receivable..........................................................................          29
  2A.17     Environmental and OSHA.......................................................................          29
  2A.18     Brokers' and Finders' Fees...................................................................          30
  2A.19     Labor Matters................................................................................          30
  2A.20     Insurance....................................................................................          30
  2A.21     Inventory....................................................................................          31
  2A.22     Compliance with Laws.........................................................................          31
  2A.23     Registration Statement; Joint Proxy Statement................................................          31
  2A.24     Accounting Matters...........................................................................          32
  2A.25     FIRPTA.......................................................................................          32
  2A.26     Employee Benefit Plans.......................................................................          32
  2A.27     Ownership of Securities......................................................................          33
  2A.28     Certain Regulatory Matters...................................................................          33
  2A.29     Representations Complete.....................................................................          34
 
ARTICLE III-- REPRESENTATIONS AND WARRANTIES OF IWL AND THE MERGER SUBSIDIARIES..........................
                                                                                                                   34
 
  3.1       Organization, Standing and Power.............................................................          34
  3.2       Capital Structure............................................................................          34
  3.3       Authority....................................................................................          36
  3.4       SEC Documents; IWL Financial Statements......................................................          36
  3.5       Brokers and Finders' Fees....................................................................          37
  3.6       Registration Statement; Joint Proxy Statement................................................          37
  3.7       Opinion of Financial Advisor.................................................................          37
  3.8       Ownership of Securities......................................................................          37
  3.9       Litigation...................................................................................          37
  3.10      No Undisclosed Liabilities...................................................................          37
  3.11      No Changes...................................................................................          37
  3.12      Tax and Other Returns and Reports............................................................          38
  3.13      Restrictions on Business Activities..........................................................          39
  3.14      Title of Properties; Absence of Liens and Encumbrances; Condition of Equipment...............          39
  3.15      Intellectual Property........................................................................          40
  3.16      Agreements, Contracts and Commitments........................................................          41
  3.17      Governmental Authorizations..................................................................          42
  3.18      Accounts Receivable..........................................................................          42
  3.19      Minute Books and Stock Records...............................................................          43
</TABLE>
 
                                       ii
<PAGE>
<TABLE>
<CAPTION>
                                                                                                              PAGE
                                                                                                              -----
<S>         <C>                                                                                            <C>
  3.20      Labor Matters................................................................................          43
  3.21      Insurance....................................................................................          43
  3.22      Inventory....................................................................................          43
  3.23      Compliance with Laws.........................................................................          43
  3.24      FIRPTA.......................................................................................          44
  3.25      Employee Benefit Plans.......................................................................          44
  3.26      Certain Regulatory Matters...................................................................          45
  3.27      Accounting Matters...........................................................................          46
  3.28      Interested Party Transactions................................................................          46
  3.29      Environmental and OSHA.......................................................................          46
  3.30      Representations Complete.....................................................................          47
  3.31      Representations and Warranties with Respect to ICEL..........................................          47
 
ARTICLE IV--CONDUCT PRIOR TO THE EFFECTIVE TIME..........................................................          47
 
  4.1       Conduct of Business of the Company and the Partnership.......................................          47
  4.2       No Solicitation..............................................................................          49
  4.3       Conduct of Business of IWL...................................................................          49
  4.4       Control of Other Party's Business; Transition Planning.......................................          51
 
ARTICLE V--ADDITIONAL AGREEMENTS.........................................................................          51
 
  5.1       Joint Proxy Statement and the Registration Statement.........................................          51
  5.2       IWL and Company Shareholders' Meetings, Partners' Meeting, and Consummation of the Mergers
            and the Interest Exchange....................................................................          52
  5.3       Access to Information........................................................................          53
  5.4       Confidentiality..............................................................................          53
  5.5       Expenses.....................................................................................          53
  5.6       Public Disclosure............................................................................          53
  5.7       Filings; Other Action........................................................................          54
  5.8       Affiliate Agreement..........................................................................          54
  5.9       Compliance...................................................................................          54
  5.10      Blue Sky Laws................................................................................          54
  5.11      Best Efforts, Additional Documents and Further Assurances....................................          54
  5.12      Employment Agreements........................................................................          55
  5.13      Pooling Accounting...........................................................................          55
  5.14      Nasdaq Listing...............................................................................          55
  5.15      Post-Merger Board of Directors and Officers of Holdings......................................          55
  5.16      No Registration Rights.......................................................................          55
  5.17      Notification of Certain Matters..............................................................          55
 
ARTICLE VI--CONDITIONS TO THE MERGERS AND THE INTEREST EXCHANGE..........................................          56
 
  6.1       Conditions to Obligations of Each Party to Effect the Mergers and the Interest Exchange......          56
  6.2       Additional Conditions to Obligations of the Company and the Partnership......................          57
  6.3       Additional Conditions to the Obligations of IWL and the Merger Subsidiaries..................          58
 
ARTICLE VII--TERMINATION, AMENDMENT AND WAIVER...........................................................          60
 
  7.1       Termination..................................................................................          60
  7.2       Effect of Termination........................................................................          62
  7.3       Amendment....................................................................................          62
</TABLE>
 
                                      iii
<PAGE>
<TABLE>
<CAPTION>
                                                                                                              PAGE
                                                                                                              -----
<S>         <C>                                                                                            <C>
  7.4       Waiver.......................................................................................          62
 
ARTICLE VIII--GENERAL PROVISIONS.........................................................................          63
 
  8.1       Survival of Representations and Warranties...................................................          63
  8.2       Notices......................................................................................          63
  8.3       Interpretation...............................................................................          64
  8.4       Counterparts.................................................................................          64
  8.5       Miscellaneous................................................................................          64
  8.6       Governing Law................................................................................          64
  8.7       Attorneys' Fees..............................................................................          64
  8.8       Arbitration..................................................................................          64
  8.9       Rules of Construction........................................................................          64
  8.10      Severability.................................................................................          64
  8.11      Definitions..................................................................................          65
</TABLE>
 
                                       iv
<PAGE>
                                LIST OF EXHIBITS
 
<TABLE>
<S>           <C>
Exhibit
1.6(a)        Company Merger Consideration and Interest Exchange Consideration
Exhibit 5.12  Form of Employment Agreement
</TABLE>
 
                               LIST OF SCHEDULES
 
Company Disclosure Schedule
 
Partnership Disclosure Schedule
 
IWL Disclosure Schedule
 
                                       v
<PAGE>
                          AGREEMENT AND PLAN OF MERGER
                              AND PLAN OF EXCHANGE
 
    This AGREEMENT AND PLAN OF MERGER AND PLAN OF EXCHANGE (this "Agreement") is
made and entered into as of February   , 1998, among IWL Communications,
Incorporated, a Texas corporation ("IWL"), IWL Holdings Corp., a Texas
corporation ("Holdings"), IWL Acquisition Corp., a Texas corporation ("I-Sub")
and a wholly owned subsidiary of Holdings, CapRock Communications Corp., a Texas
corporation (the "Company"), CapRock Acquisition Corp., a Texas corporation
("C-Sub") and a wholly owned subsidiary of Holdings, and CapRock Fiber Network,
Ltd., a Texas limited partnership (the "Partnership").
 
                                    RECITALS
 
    A. The Boards of Directors of each of Holdings, the Company, IWL, I-Sub,
C-Sub and CapRock Systems, Inc., the general partner of the Partnership (the
"General Partner"), believe it is in the best interests of each company, the
Partnership and their respective shareholders and partners, as the case may be,
that (a) IWL and I-Sub combine into a single company through the statutory
merger of I-Sub with and into IWL (the "IWL Merger"), (b) that the Company and
C-Sub combine into a single company through the statutory merger of C-Sub with
and into the Company (the "Company Merger" and, together with the IWL Merger,
the "Mergers"), and (c) upon consummation of the Mergers, all of the general and
limited partnership interests (collectively, the "Partnership Interests") in the
Partnership be exchanged (the "Interest Exchange") for shares of the common
stock, par value $.01 per share, of Holdings (the "Holdings Common Stock") in
the manner and order as hereinafter set forth, and, in furtherance thereof, have
approved and adopted the Mergers, the Interest Exchange and this Agreement.
 
    B.  Pursuant to the Mergers and the Interest Exchange, among other things,
the outstanding shares of IWL Common Stock (as hereinafter defined) and Company
Common Stock (as hereinafter defined) shall be converted into shares of Holdings
Common Stock and the outstanding Partnership Interests shall be exchanged for
shares of Holdings Common Stock, all at the rates determined herein.
 
    C.  Holdings, IWL, the Company, the Partnership, I-Sub and C-Sub desire to
make certain representations and warranties and other agreements in connection
with the Mergers and the Interest Exchange.
 
    D. IWL is unwilling to enter into this Agreement (and effect the
transactions contemplated hereby) unless, contemporaneously with the execution
and delivery hereof, (a) certain record and beneficial holders of shares of
Company Common Stock and the Partners (as hereinafter defined) enter into an
agreement (the "Owners Agreement") providing for certain matters with respect to
their shares of Company Common Stock or their Partnership Interests, as the case
may be (including, without limitation, subject to the express provisions and
conditions of that agreement, to vote such shares or Partnership Interests, as
the case may be, in favor of the Company Merger and the Interest Exchange) and
(b) certain members of the Company's management enter into employment agreements
as provided in Section 5.12 hereof.
 
    E.  The Company and the Partnership are unwilling to enter into this
Agreement (and effect the transactions contemplated hereby) unless,
contemporaneously with the execution and delivery hereof, (a) certain record and
beneficial holders of shares of IWL Common Stock enter into an agreement (the
"IWL Shareholders Agreement") providing for certain matters with respect to
their shares of IWL Common Stock (including, without limitation, subject to the
express provisions and conditions of that agreement, to vote such shares in
favor of the IWL Merger) and (b) certain members of IWL's management enter into
employment agreements as provided in Section 5.12 hereof.
 
    F.  The parties intend, by executing this Agreement, to adopt a plan of
reorganization within the meaning of Section 368 of the Internal Revenue Code of
1986, as amended (the "Code").
 
    G. The parties intend that the Mergers and the Interest Exchange be treated
as a pooling of interests for accounting purposes.
<PAGE>
    NOW, THEREFORE, in consideration of the covenants, promises and
representations set forth herein, and for other good and valuable consideration,
the parties agree as follows:
 
                                   ARTICLE I
                     THE MERGERS AND THE INTEREST EXCHANGE
 
    1.1  THE MERGERS AND THE INTEREST EXCHANGE.  At the Effective Time (as
defined in Section 1.2) and subject to and upon the terms and conditions of this
Agreement and the applicable laws of Texas,
(a) C-Sub shall be merged with and into the Company in the Company Merger, the
separate corporate existence of C-Sub shall cease, and the Company shall
continue as the surviving corporation in the Company Merger, (b) I-Sub shall be
merged with and into IWL in the IWL Merger, the separate corporate existence of
I-Sub shall cease, and IWL shall continue as the surviving corporation in the
IWL Merger, and (c) all of the outstanding Partnership Interests of the
Partnership shall be contributed to Holdings pursuant to, and in the order
contemplated by, the Interest Exchange. The Company and IWL as the surviving
corporations after the Mergers are hereinafter sometimes collectively referred
to as the "Surviving Corporations" and individually as a "Surviving
Corporation."
 
    1.2  EFFECTIVE TIME.
 
    (a) As promptly as practicable after the satisfaction or waiver of the
conditions set forth in Article VI and the consummation of the Closing referred
to in this Section 1.2, the parties hereto shall cause the Company Merger and
the IWL Merger to be consummated by filing Articles of Merger ("Articles of
Merger") with the Secretary of State of Texas in such form as required by, and
executed in accordance with the relevant provisions of, the laws of the State of
Texas (the time of such filings in Texas and the issuance of a certificate of
merger with respect to each of the Company Merger and the IWL Merger by the
Secretary of State of Texas being the "Effective Time").
 
    (b) At the Effective Time, the General Partner shall execute and deliver to
Holdings a contribution agreement substantially in the form agreed upon by the
parties hereto (a "Contribution Agreement") pursuant to which the General
Partner shall contribute its general Partnership Interest in the Partnership to
Holdings. Immediately thereafter, Holdings shall contribute the general
Partnership Interest in the Partnership to the Company. Immediately following
the consummation of the contribution of the general Partnership Interest to the
Company and at the Effective Date, each of the limited partners in the
Partnership (the "Limited Partners" and, collectively with the General Partner,
the "Partners") shall execute and deliver to Holdings a Contribution Agreement
pursuant to which the Limited Partners shall contribute their respective limited
Partnership Interests in the Partnership to Holdings. The Partnership shall file
a certificate of amendment to its certificate of limited partnership to reflect
that the Company has become the new general partner of the Partnership and that
the General Partner is the withdrawing general partner. The Partnership and the
General Partner hereby consent to (and each Contribution Agreement delivered
hereunder by a Limited Partner shall include such Limited Partner's consent to)
the transfers of the Partnership Interests contemplated by this Agreement and
hereby agree (and each Contribution Agreement delivered hereunder by a Limited
Partner shall include such Limited Partner's agreement) that, effective at the
Effective Time and subject to the consummation of the transactions contemplated
hereby, Holdings shall become a substituted limited partner in the Partnership
and the Company shall become a substituted general partner in the Partnership
and the status of the Partners as partners in the Partnership shall cease. The
Company hereby elects, effective as of the Effective Time and subject to the
consummation of the transactions contemplated hereby, to reconstitute the
Partnership, to continue as the general partner of the Partnership and to
continue the Partnership and its business.
 
    (c) The closing of the transactions contemplated hereby (the "Closing")
shall take place at the offices of Munsch Hardt Kopf Harr & Dinan, P.C., 4000
Fountain Place, 1445 Ross Avenue, Dallas, Texas 75202 at 10:00 a.m., local time,
on the date of the Effective Time (the "Closing Date").
 
                                       2
<PAGE>
    1.3  EFFECT OF THE MERGERS AND THE INTEREST EXCHANGE.
 
    (a)  At the Effective Time, the effect of the Mergers shall be as provided
in the applicable provisions of the laws of the State of Texas. Without limiting
the generality of the foregoing, and subject thereto, at the Effective Time (a)
all the estate, assets, property, rights, privileges, powers and franchises of
the Company and C-Sub shall vest in the Company as the Surviving Corporation,
and all debts, liabilities and obligations of the Company and C-Sub shall become
the debts, liabilities and obligations of the Company as the Surviving
Corporation and (b) all of the estate, assets, property, rights, privileges,
powers and franchises of IWL and I-Sub shall vest in IWL as the Surviving
Corporation, and all debts, liabilities and obligations of IWL and I-Sub shall
become the debts, liabilities and obligations of IWL as the Surviving
Corporation. After the consummation of the Mergers, each of the Surviving
Corporations shall be a direct, wholly owned subsidiary of Holdings.
 
    (b)  At the Effective Time, the Company shall become the sole successor
general partner of the Partnership and Holdings shall become the sole successor
limited partner of the Partnership.
 
    1.4  ARTICLES OF INCORPORATION: BYLAWS.
 
    (a)  The Articles of Merger as to both of the Company Merger and the IWL
Merger shall be in substantially the form agreed upon by the parties hereto, and
shall provide that at the Effective Time as to the Company Merger and the IWL
Merger, as the case may be, the Articles of Incorporation of the Surviving
Corporation shall be amended as therein provided, and may thereafter be amended
as provided by law and such Articles of Incorporation.
 
    (b)  The Bylaws of the Company and IWL as in effect immediately prior to the
Effective Time as to the Company Merger and the IWL Merger, respectively, shall
be the Bylaws of the Company and IWL, respectively, each as a Surviving
Corporation, until thereafter amended.
 
    1.5  DIRECTORS AND OFFICERS.  The directors of each Surviving Corporation
shall be Ignatius W. Leonards, Jere W. Thompson, Jr. and Tim Rogers, each to
hold such position in accordance with the Articles of Incorporation and Bylaws
of such Surviving Corporation, and the officers of each Surviving Corporation
shall be Jere W. Thompson, Jr., who shall hold the office of Chief Executive
Officer, Ignatius W. Leonards, who shall hold the office of President, and Tim
Rogers, who shall hold the offices of Vice President, Treasurer and Secretary,
in each case until their respective successors are duly elected or appointed and
qualified.
 
    1.6  SHARES TO BE ISSUED IN THE MERGERS AND THE INTEREST EXCHANGE; EFFECT ON
CAPITAL STOCK.  The manner and basis of converting the shares of common stock of
Holdings, the Surviving Corporations and I-Sub and C-Sub (collectively, the
"Merged Corporations" and individually a "Merged Corporation"), and of
exchanging the Partnership Interests, at the Effective Time by virtue of the
Mergers and the Interest Exchange and without any action on the part of any of
the parties hereto or the holder of any of such securities, shall be as
hereinafter set forth in this Section 1.6.
 
    (a)  CONVERSION OF SHARES AND EXCHANGE OF PARTNERSHIP INTERESTS.
 
        (i)  Each share of the common stock, par value $.01 per share (the "IWL
    Common Stock"), of IWL issued and outstanding immediately before the
    Effective Time (other than those held in the treasury of IWL) and all rights
    in respect thereof shall at the Effective Time, without any action on the
    part of any holder thereof, forthwith cease to exist and be converted into
    and become exchangeable for one share of Holdings Common Stock (the "IWL
    Merger Consideration," and such ratio of IWL Common Stock to Holdings Common
    Stock being herein referred to as the "IWL Exchange Ratio").
 
        (ii)  Each share of the common stock, par value $.01 per share (the
    "Company Common Stock"), of the Company issued and outstanding immediately
    before the Effective Time (other than those held in the treasury of the
    Company and any Dissenters' Shares (as defined and to the extent provided in
    Section 1.7(a)) and all rights in respect thereof shall at the Effective
    Time, without any
 
                                       3
<PAGE>
    action on the part of any holder thereof, forthwith cease to exist and be
    converted into and become exchangeable for that number of shares of Holdings
    Common Stock set forth in Exhibit 1.6(a) attached hereto (the "Company
    Merger Consideration," and such ratio of the Company Common Stock to
    Holdings Common Stock being herein referred to as the "Company Exchange
    Ratio") (the IWL Exchange Ratio and the Company Exchange Ratio being
    referred to herein collectively as the "Exchange Ratios").
 
        (iii)  Commencing immediately after the Effective Time, each certificate
    which, immediately prior to the Effective Time, represented issued and
    outstanding shares of IWL Common Stock or Company Common Stock shall
    evidence the right to receive the IWL Merger Consideration or the Company
    Merger Consideration, as the case may be, on the basis hereinbefore set
    forth, but subject to the limitations set forth in this Section 1.6.
 
        (iv)  Each one percent (1%) of the Partnership Interests issued and
    outstanding immediately before the Effective Time and all rights in respect
    thereof shall at the Effective Time, without any action on the part of the
    holder thereof (other than the execution and delivery by the holder thereof
    of a Contribution Agreement with respect thereto), forthwith be exchanged
    for that number of shares of Holdings Common Stock set forth in Exhibit
    1.6(a) attached hereto (the "Interest Exchange Consideration").
 
    (b)  CANCELLATION OF TREASURY SHARES AND OF OUTSTANDING HOLDINGS COMMON
STOCK.
 
        (i)  At the Effective Time, each share of IWL Common Stock held in the
    treasury of IWL immediately prior to the Effective Time, and each share of
    Company Common Stock held in the treasury of the Company immediately prior
    to the Effective Time, shall be canceled and retired and no shares of stock
    or other securities of Holdings or either of the Surviving Corporations
    shall be issuable, and no payment shall be made or other consideration shall
    be given, with respect thereto.
 
        (ii)  At the Effective Time, the shares of Holdings Common Stock held by
    IWL shall be canceled and retired and no shares of stock or other securities
    of Holdings or any other corporation shall be issuable, and no payment or
    other consideration shall be made, with respect thereto.
 
    (c)  CONVERSION OF COMMON STOCK OF THE MERGED CORPORATIONS INTO COMMON STOCK
OF THE SURVIVING CORPORATIONS.
 
        (i)  At the Effective Time, each share of the common stock of I-Sub
    issued and outstanding immediately prior to the Effective Time and all
    rights in respect thereof shall, without any action on the part of Holdings,
    forthwith cease to exist and be converted into 1,000 validly issued, fully
    paid and nonassessable shares of IWL Common Stock, with IWL being one of the
    Surviving Corporations. Immediately after the Effective Time and upon
    surrender by Holdings of the certificate representing the shares of the
    common stock of I-Sub, IWL as one of the Surviving Corporations shall
    deliver to Holdings an appropriate certificate or certificates representing
    1,000 shares of IWL Common Stock created by conversion of the common stock
    of I-Sub owned by Holdings as aforesaid.
 
        (ii)  At the Effective Time, each share of the common stock of C-Sub
    issued and outstanding immediately prior to the Effective Time and all
    rights in respect thereof shall, without any action on the part of Holdings,
    forthwith cease to exist and be converted into 1,000 validly issued, fully
    paid and nonassessable shares of Company Common Stock, with the Company
    being one of the Surviving Corporations. Immediately after the Effective
    Time and upon surrender by Holdings of the certificate representing the
    shares of the common stock of C-Sub, the Company as one of the Surviving
    Corporations shall deliver to Holdings an appropriate certificate or
    certificates representing 1,000 shares of Company Common Stock created by
    conversion of the common stock of C-Sub owned by Holdings as aforesaid.
 
                                       4
<PAGE>
    (d)  EXCHANGE OF SHARES OTHER THAN TREASURY SHARES.  Subject to the terms
and conditions hereof, at or prior to the Effective Time, Holdings shall appoint
an exchange agent to effect the exchange of shares of IWL Common Stock and
Company Common Stock (collectively, the "Shares") and the Partnership Interests
for Holdings Common Stock in accordance with the provisions of this Section 1.6
(the "Exchange Agent"). Upon the Effective Time, Holdings shall deposit, or
cause to be deposited, certificates representing Holdings Common Stock into
which the Shares have been converted in accordance with the provisions of
Section 1.6(a) hereof (such certificates, together with any dividends or
distributions with respect thereto, being herein referred to collectively as the
"Exchange Fund"). Commencing immediately after the Effective Time and until the
appointment of the Exchange Agent shall be terminated, each holder of a
certificate or certificates theretofore representing Shares may surrender the
same to the Exchange Agent, and, after the appointment of the Exchange Agent
shall be terminated, any such holder may surrender any such certificate to
Holdings. Such holder shall be entitled upon such surrender to receive in
exchange therefor a certificate or certificates representing the number of full
shares of Holdings Common Stock into which the Shares theretofore represented by
the certificate or certificates so surrendered shall have been converted in
accordance with the provisions of Section 1.6(a) hereof. All such shares of
Holdings Common Stock issued in accordance with the immediately preceding
sentence shall be deemed to have been issued at the Effective Time. Until so
surrendered and exchanged, each outstanding certificate which, prior to the
Effective Time, represented issued and outstanding Shares shall be deemed for
all corporate purposes of IWL and the Company, other than the payment of
dividends and other distributions, if any, to represent the right to receive the
IWL Merger Consideration or the Company Merger Consideration, as the case may
be. Unless and until any such certificate theretofore representing Shares is so
surrendered, no dividend or other distribution, if any, payable to the holders
of record of Holdings Common Stock as of any date subsequent to the Effective
Time shall be paid to the holder of such certificate in respect thereof. Upon
the surrender of any such certificate theretofore representing Shares, however,
the record holder of the certificate or certificates representing shares of
Holdings Common Stock issued in exchange therefor shall receive from the
Exchange Agent or from Holdings, as the case may be, payment of the amount of
dividends and other distributions, if any, which as of any date subsequent to
the Effective Time and until such surrender shall have become payable with
respect to such number of shares of Holdings Common Stock ("Pre-Surrender
Dividends"). No interest shall be payable with respect to the payment of Pre-
Surrender Dividends upon the surrender of certificates theretofore representing
Shares. After the appointment of the Exchange Agent shall have been terminated,
such holders of Holdings Common Stock that have not received payment of
Pre-Surrender Dividends shall look only to Holdings for payment thereof.
Notwithstanding the foregoing provisions of this Section 1.6(d) neither the
Exchange Agent nor any party hereto shall be liable to a holder of Shares for
any Holdings Common Stock or dividends or distributions thereon delivered to a
public official pursuant to any applicable abandoned property, escheat or
similar law or to a transferee pursuant to Section 1.6(e) hereof.
 
    (e)  TRANSFER BOOKS.  The stock transfer books of IWL with respect to the
shares of IWL Common Stock and the stock transfer books of the Company with
respect to the shares of Company Common Stock shall each be closed at the
Effective Time and no transfer of any Shares will thereafter be recorded on any
of such stock transfer books. In the event of a transfer of ownership of Shares
that is not registered in the stock transfer records of IWL or the Company, as
the case may be, at the Effective Time, a certificate or certificates
representing the number of full shares of Holdings Common Stock into which such
Shares shall have been converted in accordance with Section 1.6(a) hereof shall
be issued to the transferee together with a cash payment in the amount of
Pre-Surrender Dividends, if any, in accordance with Section 1.6(d) hereof, if
the certificate or certificates representing such Shares is or are surrendered
as provided in Section 1.6(d) hereof, accompanied by all documents required to
evidence and effect such transfer and by evidence of payment of any applicable
stock transfer tax.
 
    (f)  FRACTIONAL SHARES.  No fraction of a share of Holdings Common Stock
will be issued, but in lieu thereof each holder of shares of Company Common
Stock and each holder of Partnership Interests who would otherwise be entitled
to a fraction of a share of Holdings Common Stock (after aggregating all
 
                                       5
<PAGE>
fractional shares of Holdings Common Stock to be received by such holder) shall
be entitled to receive from Holdings a whole share of Holdings Common Stock.
 
    (g)  OPTIONS TO PURCHASE COMPANY COMMON STOCK AND IWL COMMON STOCK.
 
        (i)  At the Effective Time, each option granted by IWL to purchase
    shares of IWL Common Stock, or by the Company to purchase shares of Company
    Common Stock, which is outstanding and unexercised immediately prior to the
    Effective Time (each, an "Option" and collectively, "Options"), shall be
    assumed by Holdings and converted into an option (a "Holdings Option") to
    purchase shares of Holdings Common Stock in such amount and at such exercise
    price as provided below and otherwise having the same terms and conditions
    as are in effect immediately prior to the Effective Time:
 
               (A) the number of shares of Holdings Common Stock to be subject
           to the Holdings Option into which an Option is converted shall be
           equal to the product of (x) the number of shares of IWL Common Stock
           or Company Common Stock subject to the Option that is converted (the
           "Converted Option") immediately prior to the Effective Time and (y)
           the IWL Exchange Ratio (if the Converted Option related to IWL Common
           Stock) or the Company Exchange Ratio (if the Converted Option related
           to Company Common Stock), respectively, each rounded down to the
           nearest whole share; and
 
               (B) the exercise price per share of Holdings Common Stock for
           each particular Holdings Option shall be equal to (x) if such
           Holdings Option resulted from a Converted Option to acquire IWL
           Common Stock, the exercise price per share under the Converted
           Option, or (y) if such Holdings Option resulted from a Converted
           Option to acquire Company Common Stock, (1) the exercise price per
           share under the Converted Option divided by (2) the Company Exchange
           Ratio, each of which shall be rounded up to the nearest whole cent.
 
The adjustments provided herein with respect to any Options which are "incentive
stock options" (as defined in Section 422 of the Code) shall be effected in a
manner consistent with Section 424(a) of the Code. No options, if any, to
acquire Partnership Interests shall be assumed by Holdings.
 
        (ii)  Holdings shall take all corporate action necessary to reserve for
    issuance a sufficient number of shares of Holdings Common Stock for delivery
    upon exercise of Holdings Options in accordance with this Section 1.6(g). As
    soon as practicable (and in no event later than 30 days) after the Effective
    Time, Holdings shall file a registration statement on Form S-8 (or any
    successor or other appropriate forms) or another appropriate form with
    respect to the shares of Holdings Common Stock subject to the Holdings
    Options and shall use its best efforts to maintain the effectiveness of such
    registration statement or registration statements (and maintain the current
    status of the prospectus or prospectuses contained therein) for so long as
    any of the Holdings Options remain outstanding.
 
    (h)  CERTAIN ADJUSTMENTS. Without limiting any other provision of this
Agreement, if, between the date of this Agreement and the Effective Time, the
outstanding shares of IWL Common Stock or of Company Common Stock shall be
changed into a different number of shares by reason of any reclassification,
recapitalization, split-up, combination or exchange of shares, or any dividend
payable in stock of IWL or the Company, as the case may be, shall be declared
thereon with a record date within such period, the Exchange Ratios established
pursuant to the provisions of Section 1.6(a) hereof shall be adjusted
accordingly to provide to the holders of IWL Common Stock and Company Common
Stock the same economic effect as contemplated by this Agreement prior to such
reclassification, recapitalization, split-up, combination, exchange or dividend.
 
    (i)  MAXIMUM SHARES ISSUABLE. Notwithstanding anything to the contrary
contained herein, the maximum number of shares of Holdings Common Stock issuable
upon the conversion of shares of
 
                                       6
<PAGE>
Company Common Stock hereunder and the Interest Exchange and upon the exercise
of Holdings Options that are the result of Converted Options related to Company
Common Stock that are assumed by Holdings hereunder is 10,647,918 shares of
Holdings Common Stock.
 
    1.7  DISSENTERS' SHARES.
 
    (a)  Notwithstanding any provision of this Agreement to the contrary, any
shares of capital stock of the Company ("Dissenters' Shares") with respect to
which the holder thereof ("Dissenter") ultimately receives payment pursuant to
Articles 5.11 through 5.13 of the Texas Business Corporation Act ("TBCA"), shall
not be converted into or represent a right to receive Holdings Common Stock
pursuant to Section 1.6, but the holder thereof shall only be entitled to such
rights as are granted by the TBCA. Pursuant to Article 5.11.B of the TBCA,
holders of IWL Common Stock shall not have dissenters' rights.
 
    (b)  Notwithstanding the provisions of Section 1.7(a), if after the
Effective Time a Dissenter loses the right to receive payment pursuant to
Articles 5.11 through 5.13 of the TBCA, then upon the occurrence of such event,
such holder's shares shall automatically be converted into and represent only
the right to receive Holdings Common Stock effective as of the Effective Time,
but upon surrender of the certificate representing such shares, without
prejudice to any corporate proceedings which may have been taken during the
interim period between the Effective Time and the occurrence of such event, and
such shareholder shall be entitled to receive any dividends or other
distributions made to shareholders during such interim period.
 
    (c)  With respect to any Dissenters' Shares, the Company shall give Holdings
(i) prompt notice of any written demands for appraisal of any shares of capital
stock of the Company, withdrawals of such demands, and any other instruments
served on the Company pursuant to the TBCA and received by the Company and (ii)
the opportunity to participate in all negotiations and proceedings which take
place prior to the Effective Time with respect to demands for appraisal under
the TBCA. The Company shall not, except with the prior written consent of
Holdings, voluntarily make any payment before the Effective Time with respect to
any demands for appraisal of capital stock of the Company or offer to settle or
settle any such demands.
 
    (d)  All Dissenters' Shares acquired by the Company shall be canceled after
payment therefor has been made in accordance with the TBCA.
 
    1.8  NO FURTHER OWNERSHIP RIGHTS IN IWL COMMON STOCK, COMPANY COMMON STOCK
AND PARTNERSHIP INTERESTS.  All shares of Holdings Common Stock issued upon the
conversion of shares of IWL Common Stock and Company Common Stock and upon the
Interest Exchange in accordance with the terms hereof shall be deemed to have
been issued in full satisfaction of all rights pertaining to such shares of IWL
Common Stock and Company Common Stock and to such Partnership Interests,
respectively.
 
    1.9  TAX CONSEQUENCES AND ACCOUNTING TREATMENT.  It is intended by the
parties hereto that the formation of Holdings, I-Sub and C-Sub qualify as
tax-free incorporations pursuant to Section 351 of the Code, that the Interest
Exchange shall qualify as a tax-free exchange pursuant to Section 351 of the
Code, and that the Mergers shall constitute a reorganization within the meaning
of Section 368 of the Code, and that the Mergers and the Interest Exchange shall
be accounted for as a pooling of interests. Holdings, IWL, the Company, the
Partnership, I-Sub and C-Sub each agree that it will not take or omit to take
any action at any time after the date hereof which act or omission would cause
the Mergers not to qualify as a reorganization within the meaning of Section 368
of the Code or the Interest Exchange not to qualify as a tax-free exchange
pursuant to Section 351 of the Code, including without limitation:
 
    (a)  any sale, exchange, distribution, transfer or other disposition of the
assets of IWL, the Company or the Partnership that would cause the IWL Merger or
the Company Merger, as the case may be, to fail to satisfy the "continuity of
business enterprise" requirement of Section 1.368-1(d) of the Income Tax
Regulations or the "substantially all the properties" requirement of Section
368(a)(2)(E) of the Code;
 
                                       7
<PAGE>
    (b)  any reacquisition of shares of Holdings Common Stock by Holdings;
 
    (c)  any issuance of additional shares of IWL Common Stock or Company Common
Stock or sale of IWL Common Stock or Company Common Stock that would result in
Holdings failing to obtain or losing control of IWL or the Company, as the case
may be, within the meaning of Section 368(c) of the Code; and
 
    (d)  any issuance of additional shares of Holdings Common Stock that would
cause the owners of IWL Common Stock, Company Common Stock and Partnership
Interests immediately prior to the consummation of the transactions contemplated
by this Agreement, as a group, to fail to have control of Holdings, within the
meaning of Section 368(c) of the Code, immediately after the consummation of the
transactions contemplated hereby.
 
                                   ARTICLE II
                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY
 
    Except as set forth in the Company Disclosure Schedule attached hereto and
incorporated by reference herein (the "Company Disclosure Schedule"), the
Company hereby represents and warrants to Holdings and IWL (and, unless the
context indicates otherwise, all of such representations and warranties shall be
deemed made with respect to the Company, its Subsidiaries and their respective
predecessors, if any) that, as of the date hereof:
 
    2.1  ORGANIZATION AND QUALIFICATION, SUBSIDIARIES.  Each of the Company and
its Subsidiaries is a corporation duly organized, validly existing and in good
standing under the laws of its jurisdiction of incorporation or organization.
Each of the Company and its Subsidiaries has the requisite corporate power and
authority and any necessary governmental authority, franchise, license or permit
to own, operate or lease the properties that it purports to own, operate or
lease and to carry on its business as it is now being conducted, and is duly
qualified as a foreign corporation to do business, and is in good standing, in
each jurisdiction where the character of its properties owned, operated or
leased or the nature of its activities makes such qualification necessary,
except for such failure which, when taken together with all other such failures,
would not reasonably be expected to have a Material Adverse Effect on the
Company. The Company's Subsidiaries are listed on Section 2.1 of the Company
Disclosure Schedule.
 
    2.2  ARTICLES OF INCORPORATION AND BYLAWS.  The Company has heretofore
furnished, or otherwise made available, to IWL a complete and correct copy of
the Articles of Incorporation and the Bylaws (or comparable governing
documents), each as amended to the date hereof, of the Company and each of its
Subsidiaries. Such Articles of Incorporation and Bylaws (or comparable governing
documents) are in full force and effect. Neither the Company nor any of its
Subsidiaries is in violation of any of the provisions of its respective Articles
of Incorporation or Bylaws (or comparable governing documents).
 
    2.3  CAPITALIZATION.
 
    (a)  The authorized capital stock of the Company consists of 100,000,000
shares of Company Common Stock, of which as of the date hereof 10,398,954 shares
are issued and outstanding and 208,550 shares are issuable upon the exercise of
options outstanding under the Company's stock option plans listed on Section 2.3
of the Company Disclosure Schedule. Since January 1, 1997, no shares of Company
Common Stock have been issued. Except as set forth in Section 2.3 of the Company
Disclosure Schedule, there are no outstanding Company Equity Rights. For
purposes of this Agreement, "Company Equity Rights" shall mean subscriptions,
options, warrants, calls, commitments, agreements, conversion rights or other
rights of any character (contingent or otherwise) to purchase or otherwise
acquire from the Company or any of the Company's Subsidiaries at any time, or
upon the happening of any stated event, any shares of the capital stock of the
Company.
 
    (b)  Section 2.3 of the Company Disclosure Schedule sets forth for each
outstanding Company Equity Right the name of the holder of such Company Equity
Right, the number of shares subject to such Company Equity Right, the exercise
price of such Company Equity Right, the number of shares as to
 
                                       8
<PAGE>
which such Company Equity Right is exercisable, and, if the exercisability of
such Company Equity Right will be accelerated in any way by the transactions
contemplated by this Agreement, an indication of the extent of such
acceleration. Section 2.3 of the Company Disclosure Schedule also describes any
repricing of any Company Equity Rights which has taken place since January 1,
1993. The Company has made available to IWL copies of all agreements relating to
Company Equity Rights.
 
    (c)  Since January 1, 1993, the Company has not repurchased any of its
capital stock, nor has any Person other than the Company shareholders and the
holders of Company Equity Rights listed in Section 2.3 of the Company Disclosure
Schedule owned, or had any right to acquire, any capital stock of the Company.
 
    (d)  There are no outstanding obligations of the Company or any of the
Company's Subsidiaries to repurchase, redeem or otherwise acquire any shares of
capital stock of the Company.
 
    (e)  All of the issued and outstanding shares of Company Common Stock were
validly issued (free of preemptive rights) and are fully paid and nonassessable.
The Company shareholders and the number of shares of Company Common Stock owned
beneficially and of record by each Company shareholder are listed in Section 2.3
of the Company Disclosure Schedule. The Company shareholders are the record and
beneficial owners of all of the shares of Company Common Stock, free and clear
of any liens, encumbrances, pledges, security interests, voting agreements or
claims of any nature whatsoever.
 
    (f)  All of the outstanding capital stock of each of the Company's
Subsidiaries was duly authorized and validly issued (free of preemptive rights)
and is fully paid and nonassessable, and, except as set forth in Section 2.3 of
the Company Disclosure Schedule, is owned by the Company free and clear of any
liens, security interests, pledges, agreements, claims, charges or encumbrances.
Except as set forth in Section 2.3 of the Company Disclosure Schedule, there are
no existing subscriptions, options, warrants, calls, commitments, agreements,
conversion rights or other rights of any character (contingent or otherwise) to
purchase or otherwise acquire from the Company or any of the Company's
Subsidiaries at any time, or upon the happening of any stated event, any shares
of the capital stock of any of the Company's Subsidiaries, or any securities
convertible into or exercisable for shares of the capital stock of any of the
Company's Subsidiaries, whether or not presently issued or outstanding and there
are no outstanding obligations of the Company or any of the Company's
Subsidiaries to repurchase, redeem or otherwise acquire any shares of capital
stock of any of the Company's Subsidiaries. Except for equity interests
disclosed in Section 2.3 of the Company Disclosure Schedule and equity interests
in its Subsidiaries, the Company does not directly or indirectly own any equity
interest in any other Person. Each of the Company's Subsidiaries is a wholly
owned Subsidiary.
 
    (g)  Except as disclosed in Section 2.3 of the Company Disclosure Schedule,
there are no shareholder agreements, voting trusts or other agreements or
understandings to which the Company or any Subsidiary is a party or to which it
is bound relating to the voting or registration of any shares of capital stock
of the Company or any Subsidiary. The Company has not taken any action that
would result in, nor is the Company a party to any agreement, arrangement or
understanding not disclosed in Section 2.3 of the Company Disclosure Schedule
that would result in any options to purchase Company Common Stock that are
unvested becoming vested in connection with or as a result of the execution and
delivery of this Agreement or the consummation of the transactions contemplated
hereby.
 
    2.4  AUTHORITY.  The Company has all requisite corporate power and authority
to enter into this Agreement and to consummate the Company Merger and the other
transactions contemplated hereby. The execution and delivery of this Agreement
and the consummation of the transactions contemplated hereby have been duly
authorized by all necessary corporate action on the part of the Company. This
Agreement has been duly executed and delivered by the Company and constitutes
the valid and binding obligation of the Company enforceable in accordance with
its terms. The execution and delivery of this Agreement by the Company does not,
and the consummation of the transactions contemplated hereby will not result in
any violation of, or default under (with or without notice or lapse of time, or
both), or give rise
 
                                       9
<PAGE>
to a right of termination, cancellation or acceleration of any obligation or
loss of a material benefit under (a) any provision of the Articles of
Incorporation or Bylaws of the Company or (b) any material mortgage, indenture,
lease, contract or other agreement or instrument, permit, concession, franchise,
license, judgment, order, decree, statute, law, ordinance, rule or regulation
applicable to the Company or its properties or assets. No consent, approval,
order or authorization of, or registration, declaration or filing with any
court, administrative agency or commission or other governmental authority or
instrumentality ("Governmental Entity"), is required by or with respect to the
Company in connection with the execution and delivery of this Agreement or the
consummation of the transactions contemplated hereby, except for (a) the filing
of the Articles of Merger with the Secretary of State of Texas and (b) such
consents, approvals, orders, authorizations, registrations, declarations and
filings as may be required by the Nasdaq National Market or under applicable
state and federal securities laws.
 
    2.5  COMPANY FINANCIAL STATEMENTS.  Section 2.5 of the Company Disclosure
Schedule sets forth the Company's audited financial statements (balance sheets,
income statements and statements of cash flows) as of and for the fiscal years
ended December 31, 1996 and 1995, the Company's compiled financial statements
for the fiscal year ended December 31, 1994, and the Company's reviewed
financial statements for the nine months ended September 30, 1997 (collectively,
the "Company Financial Statements"). The Company Financial Statements are
complete and correct in all material respects and, except as set forth in
Section 2.5 of the Company Disclosure Schedule, have been prepared in accordance
with generally accepted accounting principles ("GAAP") applied on a basis
consistent throughout the periods indicated and consistent with each other
(except that the compiled and reviewed Company Financial Statements do not
contain the notes necessary to be in accordance with GAAP and the reviewed
Company Financial Statements are subject to normal year-end adjustments). The
Company Financial Statements present fairly the financial condition and
operating results of the Company and its Subsidiaries as of the dates and for
the periods indicated therein. The reviewed balance sheet of the Company as of
September 30, 1997 is hereinafter referred to as the "Company Balance Sheet."
 
    2.6  NO UNDISCLOSED LIABILITIES.  The Company does not have any liabilities
or obligations, either accrued or contingent, whether or not required to be
reflected in financial statements prepared in accordance with GAAP, and whether
due or to become due, except: (a) liabilities reflected in the Company Balance
Sheet, (b) liabilities specifically described in this Agreement or in the
Company Disclosure Schedule or (c) liabilities not exceeding $50,000 in the
aggregate incurred in the ordinary course of business since the date of the
Company Balance Sheet.
 
    2.7  NO CHANGES.  Except as set forth in Section 2.7 of the Company
Disclosure Schedule or as expressly contemplated by this Agreement, since the
date of the Company Balance Sheet there has not been, occurred or arisen any:
 
    (a)  transaction by the Company except in the ordinary course of business as
conducted on that date;
 
    (b)  capital expenditure or inventory purchase by the Company exceeding
$25,000 individually or $100,000 in the aggregate, except pursuant to existing
contracts listed in Section 2.12 of the Company Disclosure Schedule;
 
    (c)  destruction, damage to, or loss of any assets (including, without
limitation, intangible assets) of the Company (whether or not covered by
insurance), either individually or in the aggregate, exceeding $25,000;
 
    (d)  labor trouble or claim of wrongful discharge or other unlawful labor
practice or action;
 
    (e)  change in accounting methods or practices (including any change in
depreciation or amortization policies or rates, any change in policies in making
or reversing accruals, or any change in capitalization of software development
costs) by the Company;
 
                                       10
<PAGE>
    (f)  declaration, setting aside, or payment of a dividend or other
distribution in respect of the shares of the Company, or any direct or indirect
redemption, purchase or other acquisition by the Company of any of its shares;
 
    (g)  increase in the salary or other compensation payable or to become
payable by the Company to any of its officers, directors or employees, or the
declaration, payment, or commitment or obligation of any kind for the payment by
the Company of a bonus or other additional salary or compensation to any such
person except for year-end bonuses paid in the ordinary course of business
consistent with past practice;
 
    (h)  acquisition, sale or transfer of any asset of the Company except in the
ordinary course of business;
 
    (i)  formation, amendment or termination of any material distribution
agreement or any material contract, agreement or license to which the Company is
a party, other than termination by the Company pursuant to the terms thereof;
 
    (j)  loan by the Company to any Person or guaranty by the Company of any
loan;
 
    (k)  waiver or release of any material right or claim of the Company,
including any write-off or other compromise of any account receivable of the
Company except in the ordinary course of business;
 
    (l)  the commencement or notice or, to the knowledge of the Company, threat
of commencement of any governmental proceeding against or investigation of the
Company or its affairs;
 
    (m)  other event or condition of any character relating to the Company or
the Company's business that has or would be expected to have a Material Adverse
Effect on the Company;
 
    (n)  issuance, sale or redemption by the Company of any of its shares or of
any other of its securities, other than pursuant to the exercise of existing
options;
 
    (o)  change in pricing or royalties set or charged by the Company except
pursuant to the terms of existing contracts; or
 
    (p)  negotiation or agreement by the Company to do any of the things
described in the preceding clauses (a) through (o) (other than negotiations with
IWL and its representatives or any other Person regarding the transactions
contemplated by this Agreement).
 
    2.8  TAX AND OTHER RETURNS AND REPORTS.
 
        (a)  TAX RETURNS AND AUDITS.  Except as set forth in Section 2.8 of the
    Company Disclosure Schedule, each of the Company and its Subsidiaries has
    prepared and filed all federal, state, local and foreign returns, estimates,
    information statements and reports required to be filed by any of them
    relating to any and all Taxes relating or attributable to the Company, its
    Subsidiaries, or the assets or operations of the Company or its Subsidiaries
    ("Company Returns"), and such Company Returns are true and correct in all
    material respects and have been completed in accordance with applicable law.
    For the purposes of this Agreement, a "Tax" or, collectively, "Taxes," means
    any and all federal, state, local and foreign taxes, assessments and other
    governmental charges, duties, impositions and liabilities, including taxes
    based upon or measured by gross receipts, income, profits, sales, use and
    occupation, and value added, ad valorem, transfer, franchise, withholding,
    payroll, recapture, employment, excise and property taxes, together with all
    interest, penalties and additions imposed with respect to such amounts and
    any obligations under any agreements or arrangements with any other Person
    with respect to such amounts. Except as set forth in Section 2.8 of the
    Company Disclosure Schedule, each of the Company and its Subsidiaries has
    paid all Taxes required to be paid with respect to such Company Returns and
    has withheld with respect to its employees all federal and state income
    Taxes, FICA, FUTA and other Taxes it is required to withhold. The accruals
    for Taxes on the books and records of each of the Company and its
    Subsidiaries are sufficient to discharge the Taxes for all periods (or the
    portion of any period) ending on or prior to the Closing Date. Neither the
    Company
 
                                       11
<PAGE>
    nor any of its Subsidiaries is delinquent in the payment of any Tax nor,
    except as set forth in Section 2.8 of the Company Disclosure Schedule, to
    the knowledge of the Company, is there any Tax deficiency outstanding,
    proposed or assessed against the Company or any of its Subsidiaries nor has
    the Company or any of its Subsidiaries executed any waiver of any statute of
    limitations on or extending the period for the assessment or collection of
    any Tax. The audits of each Company Return that has been audited by the
    relevant authorities or for which the statute of limitations has been waived
    or extended have been closed and neither the Company nor any of its
    Subsidiaries has received any written or oral notification that an audit or
    other examination of any Company Return is presently in progress. All such
    Company Returns that have been audited or for which the statute of
    limitations has been waived are listed in Section 2.8 of the Company
    Disclosure Schedule. Except as set forth in Section 2.8 of the Company
    Disclosure Schedule, neither the Company nor any of its Subsidiaries has any
    material liabilities for unpaid Taxes, whether asserted or unasserted, known
    or unknown, contingent or otherwise and neither the Company nor any of its
    Subsidiaries has any knowledge of any basis for the assertion of any such
    liability attributable to the Company, its Subsidiaries or the assets or
    operations of the Company or its Subsidiaries. Except as set forth in
    Section 2.8 of the Company Disclosure Schedule, neither the Company nor any
    of its Subsidiaries is (nor have they ever been) required to join with any
    other entity in the filing of a consolidated tax return for federal tax
    purposes or a consolidated or combined return or report for state tax
    purposes. Neither the Company nor any of its Subsidiaries is a party to or
    bound by any tax indemnity, tax sharing or tax allocation agreement. There
    are (and as of immediately following the Closing there will be) no liens on
    the assets of the Company or any of its Subsidiaries relating to or
    attributable to Taxes, except for liens for Taxes not yet due and payable or
    liens for Taxes being contested by appropriate proceedings. Neither the
    Company nor any of its Subsidiaries has any knowledge of any basis for the
    assertion of any claim which, if adversely determined, would result in liens
    on the assets of the Company or its Subsidiaries. There is no contract,
    agreement, plan or arrangement, including, but not limited to, the
    provisions of this Agreement, covering any employee or former employee of
    the Company or any of its Subsidiaries that, individually or collectively,
    could give rise to the payment of any amount that would not be deductible
    pursuant to Sections 280G, 162 or 404 of the Code.
 
        (b)  NO PENALTY.  Neither the Company nor any of its Subsidiaries is
    subject to any penalty by reason of a violation of any order, rule or
    regulation of, or a default with respect to any Company Return, report or
    declaration required to be filed with, any Governmental Entity to which it
    is subject.
 
    2.9  RESTRICTIONS ON BUSINESS ACTIVITIES.  There is no agreement binding
upon, or judgment, injunction, order or decree entered against, the Company
under which the Company is prohibited from conducting or engaging in any line of
business.
 
    2.10  TITLE OF PROPERTIES; ABSENCE OF LIENS AND ENCUMBRANCES; CONDITION OF
EQUIPMENT.
 
    (a)  The Company owns no real property. Section 2.10(a) of the Company
Disclosure Schedule sets forth a true and complete list of all real property
leased by the Company and the aggregate annual rental or other fee payable under
any such lease. All such leases are in good standing, valid and effective in
accordance with their respective terms, and there is not with respect to the
Company and, to the knowledge of the Company, any other parties to such leases,
under any of such leases any existing default or event of default (or event
which with notice or lapse of time, or both, would constitute a default).
 
    (b)  Except as set forth in Section 2.10(b) of the Company Disclosure
Schedule, the Company holds good and valid title to (or, in the case of leased
properties, assets and rights of way, valid leasehold interests in) all of its
tangible properties, assets and rights of way, real, personal and mixed, used in
its business, free and clear of any liens, charges, pledges, security interests
or other encumbrances. The Company has valid and subsisting rights of way to use
all real or personal property in or through which the Company's owned or leased
optic or other fiber lines are currently located or situated.
 
                                       12
<PAGE>
    (c)  All items of equipment, including optic or other fiber lines, whether
owned or leased, having an individual value of $5,000 or more (the "Equipment")
used by the Company in the conduct of its business are listed in Section 2.10(c)
of the Company Disclosure Schedule, except individual pieces of equipment owned
by the Company with an individual value of less than $5,000. The Equipment is,
taken as a whole, (i) adequate for the conduct of the business of the Company as
presently conducted, (ii) suitable for the uses to which it is currently
employed, (iii) in good operating condition, (iv) regularly and properly
maintained, ordinary wear and tear excepted, and (v) not obsolete, dangerous or
in need of renewal or replacement.
 
    2.11  INTELLECTUAL PROPERTY.
 
        (a) The Company owns, or is licensed to use, all patents, trademarks,
    trade names, service marks, copyrights, and any applications therefor,
    maskworks, schematics, technology, know-how, computer software programs or
    applications and tangible or intangible proprietary information or material
    (excluding Company Commercial Software Rights (as defined in Section 2.11(b)
    below)) that are used or currently proposed by the Company to be used in the
    business of the Company as currently conducted or as currently proposed to
    be conducted by the Company (the "Company Intellectual Property Rights").
    Section 2.11(a) of the Company Disclosure Schedule (i) sets forth a complete
    list of all patents, patent applications, registered trademarks, material
    unregistered copyrights, trade names and service marks, and any applications
    therefor, included in the Company Intellectual Property Rights; (ii)
    specifies the jurisdictions in which each such Company Intellectual Property
    Right has been issued or registered or in which an application for such
    issuance and registration has been filed, including the respective
    registration or application numbers and the names of all registered owners,
    together with a list of all of the Company's currently marketed software
    products and a list of which, if any, of such software products that have
    been registered for copyright protection with the United States Copyright
    Office and any foreign offices and by whom such items have been registered
    and (iii) as to each such Company Intellectual Property Right, specifies
    whether it is owned by the Company or licensed to the Company by another
    Person and, in the cases of any license, sets forth the licensor and the
    term of such license. Section 2.11(a) of the Company Disclosure Schedule
    also sets forth a complete list of all licenses, sublicenses and other
    agreements pursuant to which the Company has licensed any other Person to
    use any Company Intellectual Property Right or other trade secret material
    to the Company, and includes the identity of such licensees, provided,
    however, that standard end user licenses (i.e., those licenses granted
    pursuant to the form clearly marked as the Company's "standard" form and
    delivered to IWL by the Company) to object code versions of the Company's
    software ("End-User Licenses") need not be listed. The Company is not, nor
    will it be as a result of the execution and delivery of this Agreement or
    the performance of its obligations hereunder, in violation of any license,
    sublicense or agreement described on such list. The Company is the sole and
    exclusive owner of, with all right, title and interest in and to (free and
    clear of any liens or encumbrances other than End User Licenses), those
    Company Intellectual Property Rights which the Company purports to own, and
    has sole and exclusive rights, and is not contractually obligated to pay any
    compensation to any third party in respect thereof to the use thereof or the
    material covered thereby in connection with the services or products in
    respect of which such Company Intellectual Property Rights are being used.
    With respect to Company Intellectual Property Rights licensed to the
    Company, the Company has sufficient rights under the license agreements
    relating thereto to enable the Company to use such Company Intellectual
    Property Rights in its business as currently conducted and as proposed to be
    conducted without payment of royalties or other compensation to the licensor
    thereof. No claims with respect to the Company Intellectual Property Rights
    have been asserted or, to the knowledge of the Company, are threatened by
    any Person (i) to the effect that the manufacture, sale, licensing or use of
    any product as, now used, sold or licensed or proposed for use, sale or
    license by the Company infringes on any copyright, patent, trade mark,
    service mark or trade secret, (ii) against the use by the Company of any
    trademarks, trade names, trade secrets, copyrights, patents, technology,
    know-how or computer software programs and
 
                                       13
<PAGE>
    applications used in the Company's business as currently conducted or as
    proposed by the Company to be conducted, or (iii) challenging the ownership,
    validity or effectiveness of any of the Company Intellectual Property
    Rights. Except as set forth in Section 2.11(a) of the Company Disclosure
    Schedule, all registered and material unregistered trademarks, service marks
    and copyrights held by the Company are valid and subsisting. To the
    knowledge of the Company, there is no material unauthorized use,
    infringement or misappropriation of any of the Company Intellectual Property
    Rights by any third party, including any employee or former employee of the
    Company. No Company Intellectual Property Right owned exclusively by the
    Company or product of the Company is subject to any outstanding order,
    judgment, decree, stipulation or agreement restricting in any manner the
    licensing thereof by the Company. There is no outstanding order, judgment,
    decree or stipulation on the Company, and the Company is not party to any
    agreement, restricting in any manner the licensing of the Company's products
    by the Company. Except for End User Licenses or as otherwise set forth in
    Section 2.11(a) of the Company Disclosure Schedule, the Company has not
    entered into any agreement to indemnify any Person against any charge of
    infringement of any Company Intellectual Property Right.
 
        (b) "Company Commercial Software Rights" means packaged commercially
    available software programs generally available to the public through retail
    dealers in computer software which have been licensed to the Company
    pursuant to End-User Licenses and which are used in the Company's business
    but are in no way a component of or incorporated in any of the Company's
    products and related trademarks, technology and know-how. To the knowledge
    of the Company, the Company has not breached or violated the terms of its
    license, sublicense or other agreement relating to any Company Commercial
    Software Rights and has a valid right to use such Company Commercial
    Software Rights under such license and agreements. No claims with respect to
    the Company Commercial Software Rights have been asserted or, to the
    knowledge of the Company, are threatened by any Person against the Company.
    To the knowledge of the Company, there is no material unauthorized use,
    infringement or misappropriation of any of the Company Commercial Software
    Rights by the Company or any employee or former employee of the Company
    during the period of their employment.
 
    2.12  AGREEMENTS, CONTRACTS AND COMMITMENTS.  Other than those listed in
Section 2.12 of the Company Disclosure Schedule, the Company does not have, is
not a party to nor is it bound by:
 
        (a) any collective bargaining agreements,
 
        (b) any agreements that contain any unpaid severance liabilities or
    obligations,
 
        (c) any bonus, deferred compensation, incentive compensation, option,
    pension, profit-sharing or retirement plans, or any other employee benefit
    plans or arrangements,
 
        (d) any employment or consulting agreement, contract or commitment
    (other than employment letters) with an employee or individual consultant or
    salesperson or consulting or sales agreement, contract or commitment with a
    firm or other organization, not terminable by the Company on thirty days
    notice without liability,
 
        (e) any stock option plan, stock appreciation right plan or stock
    purchase plan,
 
        (f) any insurance policy, fidelity or surety bond or completion bond not
    listed in Section 2.21 of the Company Disclosure Schedule,
 
        (g) any lease of personal property having a value individually in excess
    of $25,000,
 
        (h) any agreement of indemnification or guaranty not entered into in the
    ordinary course of business,
 
                                       14
<PAGE>
        (i) any agreement, contract or commitment containing any covenant
    limiting the freedom of the Company to engage in any line of business or
    compete with any Person,
 
        (j) any agreement, contract or commitment relating to capital
    expenditures and involving future obligations in excess of $25,000,
 
        (k) any agreement, contract or commitment relating to the disposition or
    acquisition of assets not in the ordinary course of business or any
    ownership interest in any corporation, partnership, joint venture or other
    business enterprise,
 
        (l) any mortgages, indentures, loans or credit agreements, security
    agreements or other agreements or instruments relating to the borrowing of
    money or extension of credit, including guaranties referred to in clause (h)
    hereof,
 
       (m) any purchase order or contract for the purchase of raw materials or
    acquisition of assets involving $25,000 or more in any single instance or
    $100,000 or more in the aggregate,
 
        (n) any construction contracts involving $25,000 or more in any single
    instance or $100,000 or more in the aggregate,
 
        (o) any distribution, joint marketing or development agreement,
 
        (p) any lease for switches or any other machinery, equipment or other
    personal property involving payment of aggregate rentals in excess of
    $25,000,
 
        (q) any contract pursuant to which the Company has access to the
    telephone network of another Person other than the Company's internal
    commercial telephone service and any contracts for the resale of any network
    capacity of the Company,
 
        (r) any agreement, contract, lease or easement pursuant to which the
    Company has the right of way to use any premises or real property to locate
    and/or install fiber lines on, under or through such premises or real
    property,
 
        (s) any agreement or commitment obligating the Company to deliver any
    product or service at a price which does not cover the cost (including
    labor, materials and production overhead), plus a reasonable profit margin,
    for such product or service,
 
        (t) any joint venture, partnership or other cooperative arrangement or
    agreement involving a sharing of profits or losses,
 
        (u) any other agreement, contract or commitment which involves $25,000
    or more and is not cancelable without penalty within thirty (30) days, or
 
        (v) any agreement which is otherwise material to the Company's business.
 
    The Company has not breached, or received any claim or threat that it has
breached, any of the terms or conditions of any material agreement, contract or
commitment to which it is bound (including, but not limited to, those set forth
in Section 2.12 or any other section of the Company Disclosure Schedule) in such
manner as would permit any other party to cancel or terminate the same. Each
agreement, contract or commitment to which the Company is a party and that is
required to be set forth in the Company Disclosure Schedule is in full force and
effect and, except as otherwise disclosed, is not subject to any material
default thereunder by any party thereto. The Company is not bound by any
material contract, agreement, license, lease or other commitment, a copy of
which has not been previously provided or made available to IWL. The Company
after making an inquiry of all of its officers, directors, shareholders and
appropriate employees does not have any reason to expect that any change may
occur in the relationships of the Company with its suppliers or customers as a
result of the Mergers or the Interest Exchange, which change would have a
Material Adverse Effect on the Company. No supplier of or customer of the
Company has indicated within the past year that it will stop, or decrease the
rate of supplying or
 
                                       15
<PAGE>
purchasing materials, products, or services to or from the Company, as a result
of the Mergers or the Interest Exchange. Except as described in Section 2.4, no
consents, waivers or approvals under any of the Company's material agreements,
contracts, licenses or leases are necessary in order to preserve the benefits
thereunder for the Surviving Corporation or otherwise to avoid any breach,
default or right of termination or other right as a result of the Mergers or the
Interest Exchange.
 
    2.13  INTERESTED PARTY TRANSACTIONS.  Except as set forth in Section 2.13 of
the Company Disclosure Schedule, no officer, director or shareholder of the
Company (nor any parent, sibling, descendant or spouse of any of such persons,
or any trust, partnership, corporation or other entity in which any of such
persons has or has had an interest), has or has had, directly or indirectly, (a)
an interest in any entity which furnished or sold, or furnishes or sells,
services or products which the Company furnished or sells, or proposes to
furnish or sell, or (b) any interest in any entity which purchases from or sells
or furnishes to the Company any goods or services, or (c) a beneficial interest
in any contract or agreement required to be set forth in Section 2.12 of the
Company Disclosure Schedule; provided, that ownership of no more than five
percent (5%) of the outstanding voting stock of a publicly traded corporation
shall not be deemed an "interest in any entity" for purposes of this Section
2.13.
 
    2.14  GOVERNMENTAL AUTHORIZATIONS.  Section 2.14 of the Company Disclosure
Schedule accurately lists each federal, state, county, local or foreign
governmental consent, license, permit, grant, or other authorization issued to
the Company (a) pursuant to which the Company currently operates or holds any
interest in any of its properties or (b) which is required for the operation of
its business as currently conducted or the holding of any such interest as
currently held (herein collectively called the "Company Authorizations"). The
Company Authorizations are in full force and effect and constitute all the
authorizations required to permit the Company to operate or conduct its business
as currently conducted or hold any interest in its properties as currently held.
 
    2.15  LITIGATION.  Section 2.15 of the Company Disclosure Schedule
accurately lists all suits, actions and legal, administrative, arbitration or
other proceedings and governmental investigations and all other claims pending
against the Company or, to the knowledge of the Company, threatened or which the
Company expects will ultimately be threatened or commenced against the Company.
None of such suits, actions, proceedings, investigations or claims seek to
prevent the consummation of the Mergers or the Interest Exchange. There is no
judgment, decree or order enjoining the Company in respect of, or the effect of
which is to prohibit, any business practice or the acquisition of any property
or the conduct of business of the Company. Section 2.15 of the Company
Disclosure Schedule also lists all suits and legal actions initiated by the
Company which are still pending or which have been concluded in the last two
years.
 
    2.16  ACCOUNTS RECEIVABLE.  All accounts receivable of the Company shown in
the Company Balance Sheet arose in the ordinary course of business and, to the
extent not previously collected, are collectible (except to the extent reserved
against as reflected in the Company Financial Statements) and are carried at
values determined in accordance with GAAP consistently applied. To the knowledge
of the Company, none of the accounts receivable of the Company outstanding as of
the date hereof is subject to any claim of offset, recoupment, set off or
counterclaim and there are no facts or circumstances (whether asserted or
unasserted) that would give rise to any such claim. No accounts receivable are
contingent upon the performance by the Company of any obligation or contract
except for the Company's maintenance obligations under its maintenance
agreements (although no customer has claimed that the Company has failed to
perform its maintenance obligations). No Person has any lien, charge, pledge,
security interest or other encumbrance on any of the Company's accounts
receivable and no agreement for deduction or discount has been made with respect
to any of such accounts receivable, except for liens granted to Bank One Texas,
N.A. under the Company's revolving line of credit.
 
    2.17  MINUTE BOOKS AND STOCK RECORDS.  The minute books of the Company and
its Subsidiaries made available to counsel for IWL contain minutes of all
meetings of directors and shareholders (or consents in
 
                                       16
<PAGE>
lieu of such meetings) accurate in all material respects since the respective
times of incorporation of the Company and its Subsidiaries. The stock records of
the Company and its Subsidiaries made available to counsel for IWL contain an
accurate record of all stock issuances and stock transfers of the Company Common
Stock.
 
    2.18  ENVIRONMENTAL AND OSHA.
 
        (a) The Company has complied in all material respects with all laws
    (including rules and regulations thereunder) of federal, state and local
    Governmental Entities concerning the environment, public health and safety,
    and employee health and safety, and no charge, complaint, action, suit,
    proceeding, hearing, known investigation, claim, demand, or notice has been
    filed or commenced against the Company alleging any failure to comply with
    any such law or regulation.
 
        (b) The Company has no obligation to take remedial action with respect
    to any conditions nor does the Company have any liability, and there is no
    basis related to the Company's past or present operations, for any present
    charge, complaint, action, suit, proceeding, hearing, known investigation,
    claim, or demand giving rise to any liability or obligation to take any
    remedial action under the Comprehensive Environmental Response, Compensation
    and Liability Act of 1980, the Resource Conservation and Recovery Act of
    1976, the Federal Water Pollution Control Act of 1972, the Clean Air Act of
    1970, the Safe Drinking Water Act of 1974, the Toxic Substances Control Act
    of 1976, or the Emergency Planning and Community Right-to-Know Act of 1986
    (each as amended), or any other law (or rule or regulation thereunder) of
    any federal, state or local Governmental Entity, concerning the release or
    the threatened release of hazardous substances, public health and safety,
    pollution or protection of the environment (collectively, the "Environmental
    Laws").
 
        (c) The Company has no liability relating to, and it has not handled or
    disposed of any substance, arranged for the disposal of any substance, or
    owned or operated any property or facility in violation of any Environmental
    Law.
 
        (d) The Company has no liability for, and there is no basis for, any
    present charge, complaint, action, suit, proceeding, hearing, investigation,
    claim, or demand against the Company giving rise to any material liability
    under the Occupational Safety and Health Act, as amended, or any other law
    (or rule or regulation thereunder) of any federal, state or local
    Governmental Entity concerning employee health and safety (collectively,
    "Employee Safety Laws").
 
        (e) The Company has no liability relating to, and, to the knowledge of
    the Company, the Company has not exposed any of the Company's employees to
    any substances or conditions that could form the basis for, any present
    charge, complaint, action, suit, proceeding, hearing, investigation, claim,
    or demand (under the common law or pursuant to statute) against the Company
    giving rise to material liability for any illness of or personal injury to
    any employee.
 
        (f) The Company has been in compliance with all the terms and conditions
    of all permits, licenses, and other authorizations of Governmental Entities
    which are required under any Environmental Law or Employee Safety Law.
 
        (g) All properties and equipment used by the Company are free of
    asbestos, PCB's and other Extremely Hazardous Substances (as defined in
    Section 302 of the Emergency Planning and Community Right-to-Know Act of
    1986, as amended). To the knowledge of the Company, no pollutant,
    contaminant, chemical, or industrial, hazardous, or toxic material or waste
    has been buried, stored, spilled, leaked, discharged, emitted, or released
    on any real property that the Company has ever owned, or that the Company
    now leases or has ever leased.
 
    2.19  BROKERS' AND FINDERS' FEES.  Except pursuant to an advisory agreement
with Hoak, Breedlove & Wesneski, Inc. (the arrangements with which have been
disclosed to IWL prior to the date hereof), the Company has not incurred, nor
will it incur, directly or indirectly, any liability for brokerage or finders,
fees
 
                                       17
<PAGE>
or agents' commissions or any similar charges in connection with this Agreement
or any transaction contemplated hereby.
 
    2.20  LABOR MATTERS.  The Company is in compliance with all currently
applicable laws and regulations respecting employment, discrimination in
employment, terms and conditions of employment and wages and hours and
employment practices, and is not engaged in any unfair labor practice. The
Company has not received any notice from any Governmental Entity of, and to the
knowledge of the Company there has not been asserted before any Governmental
Entity, any claim, action or proceeding to which the Company is a party or
involving the Company, and there is neither pending nor, to the knowledge of the
Company, threatened any investigation or hearing concerning the Company arising
out of or based upon any such laws, regulations or practices. There are no
pending claims against the Company under any workers compensation plan or policy
or for long term disability. The Company has complied in all material respects
with all applicable health care benefit continuation provisions of Consolidated
Omnibus Budget Reconciliation Act of 1985 ("COBRA") and has no obligations with
respect to any former employees or qualified beneficiaries thereunder. Section
2.20 of the Company Disclosure Schedule lists all current employees of the
Company and their current salary and vacation accruals.
 
    2.21  INSURANCE.  Section 2.21 of the Company Disclosure Schedule lists all
insurance policies and fidelity bonds covering the assets, business, equipment,
properties, operations, software errors and omissions, employees, officers and
directors of the Company as well as all claims made under any insurance policy
by the Company since January 1, 1993 (other than claims under the Company's
medical and dental insurance plans). There is no claim by the Company pending
under any of such policies or bonds as to which coverage has been questioned,
denied or disputed by the underwriters of such policies or bonds (other than
claims made under the Company's medical and dental insurance plans). The Company
has provided or made available to IWL copies of all such insurance policies and
fidelity bonds and all claims made by the Company under its insurance policies
(other than claims under the Company's medical and dental plans). All premiums
payable under all such policies and bonds have been paid and the Company is
otherwise in compliance in all material respects with the terms of such policies
and bonds (or other policies and bonds providing substantially similar insurance
coverage). Such policies of insurance and bonds are of the type and in amounts
customarily carried by Persons conducting businesses similar to those of the
Company. The Company does not know of any threatened termination of or proposed
material premium increase with respect to any of such policies. The Company has
never been denied insurance coverage nor has any insurance policy of the Company
ever been canceled for any reason.
 
    2.22  INVENTORY.  The inventory appearing on the Company Financial
Statements, or thereafter acquired or produced, conforms in all material
respects with the Company's applicable specifications and warranties and have
been produced in compliance with the Company's quality control procedures and
consist only of items of a quality and quantity useable or saleable by the
Company in the ordinary course of business. All such inventory is merchantable
and fit for the purpose for which it was procured or manufactured, and none of
which is obsolete, damaged or defective in any amount. Such inventory is owned
by the Company and is not subject to any liens, charges, pledges, security
interests or other encumbrances.
 
    2.23  COMPLIANCE WITH LAWS.
 
        (a) The Company has complied in all material respects with, is not in
    violation of, and has not received any notices of violation with respect to
    any federal, state or local statute, law or regulation with respect to the
    conduct of its business or the ownership or operation of its business,
    assets or properties. No charge, complaint, action, suit, proceeding,
    hearing, investigation, claim, demand, or notice has been filed or commenced
    against alleging any failure to comply with any such law or regulation.
 
                                       18
<PAGE>
        (b) The Company has not violated in any respect, or received a notice or
    charge asserting any violation of the Sherman Act, the Clayton Act, the
    Robinson-Patman Act, or the Federal Trade Commission Act, each as amended.
 
        (c) The Company has not, and none of the officers, directors,
    shareholders or employees of the Company have, on behalf of the Company:
 
            (i) made or agreed to make any contribution, payment or gift of
       funds or property to any governmental official, employee, or agent where
       either the contribution, payment, or gift or the purpose thereof was
       illegal under the laws of any federal, state or local jurisdiction; or
 
            (ii) established or maintained any unrecorded fund or asset for any
       purpose, or intentionally made any false or inaccurate entries on any of
       its books and/or records; or
 
           (iii) made or agreed to make any contribution, or reimbursed any
       political gift or contribution made by any other Person, to any candidate
       for federal, state or local public office; or
 
            (iv) been involved in the disbursement or receipt of funds outside
       of the normal internal control systems of accountability or been involved
       in the improper or inaccurate recording of material payments,
       disbursements or receipts.
 
    2.24  REGISTRATION STATEMENT; JOINT PROXY STATEMENT.  None of the
information supplied or to be supplied by or on behalf of the Company for
inclusion or incorporation by reference, and reviewed by the Company prior to
such inclusion or incorporation by reference, in the registration statement to
be filed with the SEC by Holdings in connection with the issuance of shares of
Holdings Common Stock in the Mergers and the Interest Exchange (the
"Registration Statement") will, at the time the Registration Statement becomes
effective under the Securities Act of 1933, as amended (the "Securities Act"),
contain any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein,
in light of the circumstances under which they were made, not misleading. None
of the information supplied or to be supplied by or on behalf of the Company for
inclusion or incorporation by reference, and reviewed by the Company prior to
such inclusion or incorporation by reference, in the joint proxy statement, in
definitive form, relating to the meetings of the IWL and the Company
shareholders to be held in connection with the Mergers, or in the related proxy
and notice of meeting, or soliciting material used in connection therewith
(referred to herein collectively as the "Joint Proxy Statement") will, at the
dates mailed to shareholders and at the times of the IWL shareholders' meeting
and the Company shareholders' meeting, contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary in order to make the statements therein, in light of the
circumstances under which they are made, not misleading. If at any time prior to
the Effective Time any event with respect to the Company, its officers and
directors or any of its Subsidiaries should occur which is required to be
described in an amendment of, or a supplement to, the Registration Statement or
the Joint Proxy Statement, the Company shall promptly so advise IWL and
Holdings. The Company will promptly disseminate any such amendment or supplement
to the shareholders of the Company.
 
    2.25  ACCOUNTING MATTERS.  Neither the Company nor, to its best knowledge,
any of its affiliates has through the date hereof taken or agreed to take any
action that would prevent the business combination to be effected by the Mergers
and the Interest Exchange from being accounted for as a "pooling of interests."
 
    2.26  FIRPTA.  The Company is not, and has not been at any time, a "United
States real property holding corporation" within the meaning of Section
897(c)(2) of the Code.
 
    2.27  EMPLOYEE BENEFIT PLANS.
 
    (a)  Section 2.27 of the Company Disclosure Schedule lists all employee
benefit plans (as defined in Section 3(3) of the Employee Retirement Income
Security Act of 1974, as amended ("ERISA")) and all bonus, stock option, stock
purchase, incentive, deferred compensation, supplemental retirement, severance
 
                                       19
<PAGE>
and other similar fringe or employee benefit plans, programs or arrangements,
and any current or former employment or executive compensation or severance
agreements, written or otherwise, for the benefit of, or relating to, any
employee of the Company, any trade or business (whether or not incorporated)
which is a member or which is under common control with the Company (a "Company
ERISA Affiliate") within the meaning of Section 414 of the Code, or any
Subsidiary of the Company (together, the "Company Employee Plans"), and a copy
of each such Company Employee Plan has been provided or made available to IWL.
 
    (b)  (i) None of the Company Employee Plans promises or provides retiree
medical or other retiree welfare benefits to any person except as required by
applicable law, including, but not limited to, COBRA; (ii) all Company Employee
Plans are in compliance in all material respects with the requirements
prescribed by any and all applicable statutes (including ERISA and the Code),
orders, or governmental rules and regulations currently in effect with respect
thereto (including all applicable requirements for notification to participants
or beneficiaries or the Department of Labor, Internal Revenue Service (the
"IRS") or Secretary of the Treasury), and the Company has performed in all
material respects all obligations required to be performed by it under, is not
in default under or violation of, and has no knowledge of any default or
violation by any other party to, any of the Company Employee Plans; (iii) each
Company Employee Plan intended to qualify under Section 401(a) of the Code and
each trust intended to qualify under Section 501(a) of the Code either has
received a favorable determination letter with respect to each such Company
Employee Plan from the IRS or still has a remaining period of time under
applicable Treasury Regulations or IRS pronouncements in which to apply for such
a determination letter and to make any amendments necessary to obtain a
favorable determination; and (iv) no Company Employee Plan is or within the
prior six (6) years has been subject to, and the Company has not incurred and
does not expect to incur any liability under, Title IV of ERISA or Section 412
of the Code and (v) nothing in any Company Employee Plan precludes or interferes
with Holdings' ability to cause the Company to terminate (or consolidate, at
Holdings' option) any Company Employee Plan after the Closing, provided that (A)
the Company Employee Plans may be terminated prospectively only, subject to
rights accrued by the Company's employees at the time of such termination and
(B) not more than sixty days notice may be required to terminate certain Company
Employee Plans.
 
    (c)  None of the following now exists or has existed within the six-year
period ending on the date hereof with respect to any Company Employee Plan: (i)
any act or omission by the Company constituting a violation of Section 402 or
403 or, to the knowledge of the Company, Section 404 or 405 of ERISA; (ii) to
the knowledge of the Company, any act or omission by the Company which
constitutes a violation of Sections 406 and 407 of ERISA and is not exempted by
Section 408 of ERISA or which constitutes a violation of Section 4975(c) of the
Code and is not exempted by Section 4975(d) of the Code; (iii) any act or
omission by the Company constituting a violation of Section 503 or 511 or, to
the knowledge of the Company, Section 510 of ERISA; or (iv) any act or omission
by the Company which could give rise to liability under Section 502 of ERISA or
under Sections 4979 or 4975 through 4980 of the Code or any other provisions of
ERISA or the Code.
 
    (d)  Each Company Employee Plan has been maintained in substantial
compliance with its terms, and all contributions, premiums or other payments due
from the Company or any of its Subsidiaries to (or under) any such Company
Employee Plan have been fully paid or adequately provided for on the Company
Financial Statements for the most recently ended fiscal year. All accruals
thereon (including, where appropriate, proportional accruals for partial
periods) have been made in accordance with GAAP consistently applied on a
reasonable basis. There has been no amendment, written interpretation or
announcement (whether or not written) by the Company with respect to, or change
in employee participation or coverage under, any Company Employee Plan that
would increase materially the expense of maintaining such plans or arrangements,
individually or in the aggregate, above the level of expense incurred with
respect thereto for the most recently ended fiscal year.
 
                                       20
<PAGE>
    (e)  The Company has made available to IWL complete, accurate and current
copies of all Company Employee Plans and all amendments, documents,
correspondence addressed to the Company and filings relating thereto, including
but not limited to any statements, filings, reports or returns filed with any
governmental agency with respect to the Company Employee Plans at any time
within the three-year period ending on the date hereof.
 
    2.28  OWNERSHIP OF SECURITIES.  As of the date hereof, none of the Company
or any of its affiliates or associates (as such terms are defined under the
Exchange Act), (a)(i) beneficially owns, directly or indirectly, or (ii) is
party to any agreement, arrangement or understanding for the purpose of
acquiring, holding, voting or disposing of, in each case, shares of capital
stock of IWL that in the aggregate represent 10% or more of the outstanding
shares of IWL Common Stock, or (b) is an "affiliated shareholder" of IWL within
the meaning of Article XIII of the TBCA. Neither the Company nor any of its
Subsidiaries owns any shares of IWL Common Stock.
 
    2.29  CERTAIN REGULATORY MATTERS.
 
    (a)  Except as disclosed in Section 2.29 of the Company Disclosure Schedule,
and except for billing disputes with customers arising in the ordinary course of
business that in the aggregate involve immaterial amounts, there are no
proceedings or, to the Company's knowledge, investigations pending or threatened
before any domestic or foreign court, administrative, governmental or regulatory
body in which any of the following matters are being considered which could
reasonably be expected to have a Material Adverse Effect on the Company, nor has
the Company or any of its Subsidiaries received written notice or inquiry from
any such body, government official, consumer advocacy or similar organization or
any private party indicating that any of such matters should be considered or
may become the object of consideration or investigation which could reasonably
be expected to have a Material Adverse Effect on the Company: (i) reduction of
rates charged to customers; (ii) reduction of earnings; (iii) refunds of amounts
previously charged to customers; (iv) failure to meet any expense,
infrastructure, service quality or other commitments previously made to or
imposed by any administrative, governmental or regulatory body; or (v) increase
in termination or access charges or other rates paid or payable by the Company
to its suppliers.
 
    (b)  Except as disclosed in Section 2.29 of the Company Disclosure Schedule,
neither the Company nor any of its Subsidiaries has any outstanding commitments
(and no such obligations have been imposed upon the Company and remain
outstanding) regarding (i) reduction of rates charged to customers; (ii)
reduction of earnings; (iii) refunds of amounts previously charged to customers;
or (iv) expenses, infrastructure expenditures, service quality or other
regulatory requirements to or by any domestic or foreign court, administrative,
governmental or regulatory body, government official, consumer advocacy or
similar organization, in each case which could reasonably be expected to have a
Material Adverse Effect on the Company.
 
    (c)  The Company has not transferred, sold any interest in, or otherwise
diluted its control over any federal or state regulatory licenses, certificates,
approvals or other authorizations under which it operates, and the transfer of
such authorizations, subject to regulatory approval, would not violate the terms
of any agreement to which the Company is a party or by which the Company is
bound, or impinge the rights of any third party.
 
    (d)  The Company has no current liability (and there is no basis for any
present or future charge, complaint, action, suit, proceeding, hearing,
investigation, claim, or demand against the Company giving rise to any
liability) arising out of any injury to persons or property as a result of the
ownership, possession, or use of any product manufactured, sold, leased, or
delivered by the Company. Any such claims would be fully covered to the extent
of the dollar limitations of the Company's product liability insurance. There
are no recalls, threatened or pending, and no federal investigative reports have
been filed or were required to have been filed with respect to any of the
Company's products.
 
                                       21
<PAGE>
    2.30  REPRESENTATIONS COMPLETE.  None of the representations or warranties
made by the Company in this Agreement, nor any statement made in any Schedule,
Exhibit or certificate furnished by the Company pursuant to this Agreement, when
read in their entirety, contains or will contain any untrue statement of a
material fact at the Effective Time, or omits or will omit to state any material
fact necessary in order to make the statements contained herein or therein, in
the light of the circumstances under which made, not misleading. No warranty or
representation shall be deemed to have been made by the Company except for the
warranties and representations set forth in this Agreement and the Exhibits,
Schedules and certificates delivered pursuant hereto.
 
                                  ARTICLE IIA
               REPRESENTATIONS AND WARRANTIES OF THE PARTNERSHIP
 
    Except as set forth in the Partnership Disclosure Schedule attached hereto
and incorporated by reference herein (the "Partnership Disclosure Schedule"),
the Partnership hereby represents and warrants to Holdings and IWL (and, unless
the context indicates otherwise, all of such representations and warranties
shall be deemed made with respect to the Partnership and its predecessor, if
any) that, as of the date hereof:
 
    2A.1  ORGANIZATION AND QUALIFICATION, SUBSIDIARIES.  The Partnership is a
limited partnership duly formed and validly existing under the laws of the State
of Texas. The Partnership has the requisite partnership power and authority and
any necessary governmental authority, franchise, license or permit to own,
operate or lease the properties that it purports to own, operate or lease and to
carry on its business as it is now being conducted, and is duly qualified as a
foreign partnership to do business, and is in good standing, in each
jurisdiction where the character of its properties owned, operated or leased or
the nature of its activities makes such qualification necessary, except for such
failure which, when taken together with all other such failures, would not
reasonably be expected to have a Material Adverse Effect on the Partnership. The
Partnership does not have any Subsidiaries.
 
    2A.2  AGREEMENT OF LIMITED PARTNERSHIP.  The Partnership has heretofore
furnished, or otherwise made available to IWL, a complete and correct copy of
the Agreement of Limited Partnership (or comparable governing documents), as
amended to the date hereof, of the Partnership and its Certificate of Limited
Partnership. The Agreement of Limited Partnership (or comparable governing
documents) is in full force and effect.
 
    2A.3  PARTNERSHIP INTERESTS.
 
    (a)  Section 2A.3 of the Partnership Disclosure Schedule sets forth all of
the outstanding Partnership Interests, all of which were validly issued in
accordance with the terms of the Agreement of Limited Partnership of the
Partnership and are fully paid and nonassessable. Except as set forth in Section
2A.3 of the Partnership Disclosure Schedule, there are no outstanding
Partnership Equity Rights. For purposes of this Agreement, "Partnership Equity
Rights" shall mean subscriptions, options, warrants, calls, commitments,
agreements, conversion rights or other rights of any character (contingent or
otherwise) to purchase or otherwise acquire from the Partnership at any time, or
upon the happening of any stated event, any interest in the Partnership.
 
    (b)  There are no outstanding obligations of the Partnership to repurchase,
redeem or otherwise acquire any Partnership Interest.
 
    (c)  Except as set forth in section 2A.3 of the Partnership Disclosure
Schedule, there are no liens, security interests, pledges, agreements, claims,
charges or encumbrances on any of the Partnership Interests. Except for equity
interests disclosed in Section 2A.3 of the Partnership Disclosure Schedule, the
Partnership does not directly or indirectly own any equity interest in any other
Person.
 
                                       22
<PAGE>
    (d)  Except as disclosed in Section 2A.3 of the Partnership Disclosure
Schedule, there are no partner agreements, voting trusts or other agreements or
understandings to which the Partnership is a party or to which it is bound
relating to the voting of any Partnership Interest.
 
    2A.4  AUTHORITY.  The Partnership has all requisite partnership power and
authority to enter into this Agreement and to consummate the Interest Exchange
and the other transactions contemplated hereby. The execution and delivery of
this Agreement and the consummation of the transactions contemplated hereby have
been duly authorized by the General Partner on behalf of the Partnership. This
Agreement has been duly executed and delivered by the General Partner on behalf
of the Partnership and constitutes the valid and binding obligation of the
Partnership enforceable in accordance with its terms. The execution and delivery
of this Agreement by the Partnership does not and the consummation of the
transactions contemplated hereby will not result in any violation of, or default
under (with or without notice or lapse of time, or both), or give rise to a
right of termination, cancellation or acceleration of any obligation or loss of
a material benefit under (a) any provision of the Agreement of Limited
Partnership of the Partnership or (b) any material mortgage, indenture, lease,
contract or other agreement or instrument, permit, concession, franchise,
license, judgment, order, decree, statute, law, ordinance, rule or regulation
applicable to the Partnership or its properties or assets. No consent, approval,
order or authorization of, or registration, declaration or filing with any
Governmental Entity is required by or with respect to the Partnership in
connection with the execution and delivery of this Agreement or the consummation
of the transactions contemplated hereby, except for (a) the filing of an
amendment to the Partnership's certificate of limited partnership with the
Secretary of State of Texas and (b) such consents, approvals, orders,
authorizations, registrations, declarations and filings as may be required by
the Nasdaq National Market or under applicable state and federal securities
laws.
 
    2A.5  PARTNERSHIP FINANCIAL STATEMENTS.  Section 2A.5 of the Partnership
Disclosure Schedule sets forth the Partnership's audited financial statements
(balance sheets, income statements and statements of cash flows) as of and for
the fiscal years ended December 31, 1996 and 1994 and for the six months ended
June 30, 1995, and the Partnership's reviewed financial statements for the nine
months ended September 30, 1997 (collectively, the "Partnership Financial
Statements"). The Partnership Financial Statements are complete and correct in
all material respects and, except as set forth in Section 2A.5 of the
Partnership Disclosure Schedule, have been prepared in accordance with GAAP
applied on a basis consistent throughout the periods indicated and consistent
with each other (except that the reviewed Partnership Financial Statements do
not contain the notes necessary to be in accordance with GAAP and are subject to
normal year-end adjustments). The Partnership Financial Statements present
fairly the financial condition and operating results of the Partnership and its
Subsidiaries as of the dates and for the periods indicated therein. The reviewed
balance sheet of the Partnership as of September 30, 1997 is hereinafter
referred to as the "Partnership Balance Sheet."
 
    2A.6  NO UNDISCLOSED LIABILITIES.  The Partnership does not have any
liabilities or obligations, either accrued or contingent, whether or not
required to be reflected in financial statements prepared in accordance with
GAAP, and whether due or to become due, except: (a) liabilities reflected in the
Partnership Balance Sheet, (b) liabilities specifically described in this
Agreement or in the Partnership Disclosure Schedule or (c) liabilities not
exceeding $50,000 in the aggregate incurred in the ordinary course of business
since the date of the Partnership Balance Sheet.
 
    2A.7  NO CHANGES.  Except as set forth in Section 2A.7 of the Partnership
Disclosure Schedule or as contemplated by this Agreement, since the date of the
Partnership Balance Sheet there has not been, occurred or arisen any:
 
    (a)  transaction by the Partnership except in the ordinary course of
business as conducted on that date;
 
                                       23
<PAGE>
    (b)  capital expenditure or inventory purchase by the Partnership exceeding
$25,000 individually or $100,000 in the aggregate, except pursuant to existing
contracts listed in Section 2A.12 of the Partnership Disclosure Schedule;
 
    (c)  destruction, damage to, or loss of any assets (including without
limitation intangible assets) of the Partnership (whether or not covered by
insurance), either individually or in the aggregate, exceeding $25,000;
 
    (d)  labor trouble or claim of wrongful discharge or other unlawful labor
practice or action;
 
    (e)  change in accounting methods or practices (including any change in
depreciation or amortization policies or rates, any change in policies in making
or reversing accruals, or any change in capitalization of software development
costs) by the Partnership;
 
    (f)  declaration, setting aside, or payment of a distribution in respect of
the Partnership Interests, or any direct or indirect redemption, purchase or
other acquisition by the Partnership of any of its interests;
 
    (g)  increase in the salary or other compensation payable or to become
payable by the Partnership to any of its employees, or the declaration, payment,
or commitment or obligation of any kind for the payment by the Partnership of a
bonus or other additional salary or compensation to any person except for
year-end distributions and bonuses paid in the ordinary course of business
consistent with past practice;
 
    (h)  acquisition, sale or transfer of any asset of the Partnership except in
the ordinary course of business;
 
    (i)  formation, amendment or termination of any material distribution
agreement or any material contract, agreement or license to which the
Partnership is a party, other than termination by the Partnership pursuant to
the terms thereof,
 
    (j)  loan by the Partnership to any Person or guaranty by the Partnership of
any loan;
 
    (k)  waiver or release of any material right or claim of the Partnership,
including any write-off or other compromise of any account receivable of the
Partnership except in the ordinary course of business;
 
    (l)  the commencement or notice or, to the knowledge of the Partnership,
threat of commencement of any government proceeding against or investigation of
the Partnership or its affairs;
 
    (m)  other event or condition of any character relating to the Partnership
or the Partnership's business that has or would be expected to have a Material
Adverse Effect on the Partnership;
 
    (n)  issuance, sale or redemption by the Partnership of any interest in the
Partnership;
 
    (o)  change in pricing or royalties set or charged by the Partnership except
pursuant to the terms of existing contracts; or
 
    (p)  negotiation or agreement by the Partnership to do any of the things
described in the preceding clauses (a) through (o) (other than negotiations with
parent and its representatives or any other Person regarding the transactions
contemplated by this Agreement).
 
    2A.8  TAX AND OTHER PARTNERSHIP RETURNS AND REPORTS.
 
    (a)  TAX PARTNERSHIP RETURNS AND AUDITS. Except as set forth in Section 2A.8
of the Partnership Disclosure Schedule, the Partnership has prepared and filed
all federal, state, local and foreign returns, estimates, information statements
and reports required to be filed by any of them relating to any and all Taxes
relating or attributable to the Partnership or the assets or operations of the
Partnership ("Partnership Returns"), and such Partnership Returns are true and
correct in all material respects and have been completed in accordance with
applicable law. Except as set forth in Section 2A.8 of the Partnership
Disclosure Schedule, the Partnership has paid all Taxes required to be paid by
the Partnership with respect to such Partnership Returns and has withheld with
respect to its employees all federal and state income
 
                                       24
<PAGE>
Taxes, FICA, FUTA and other Taxes it is required to withhold. The accruals for
Taxes on the books and records of the Partnership are sufficient to discharge
the Taxes payable by the Partnership for all periods (or the portion of any
period) ending on or prior to the Closing Date. The Partnership is not
delinquent in the payment of any Tax nor, except as set forth in Section 2A.8 of
the Partnership Disclosure Schedule, is there any Tax deficiency outstanding, to
the knowledge of the Partnership, proposed or assessed against the Partnership
nor has the Partnership executed any waiver of any statute of limitations on or
extending the period for the assessment or collection of any Tax. The audits of
each Partnership Return that has been audited by the relevant authorities or for
which the statute of limitations has been waived or extended have been closed
and the Partnership has not received any written or oral notification that an
audit or other examination of any Partnership Return is presently in progress.
All such Partnership Returns that have been audited or for which the statute of
limitations has been waived are listed in Section 2A.8 of the Partnership
Disclosure Schedule. Except as set forth in Section 2A.8 of the Partnership
Disclosure Schedule, the Partnership does not have any material liabilities for
unpaid Taxes, whether asserted or unasserted, known or unknown, contingent or
otherwise and the Partnership has no knowledge of any basis for the assertion of
any such liability attributable to the Partnership or the assets or operations
of the Partnership. The Partnership is not (nor has it ever been) required to
join with any other entity in the filing of a consolidated tax return for
federal tax purposes or a consolidated or combined return or report for state
tax purposes. Except as set forth in Section 2A.8 of the Partnership Disclosure
Schedule, the Partnership is not a party to or bound by any tax indemnity, tax
sharing or tax allocation agreement. There are (and as of immediately following
the Closing there will be) no liens on the assets of the Partnership relating to
or attributable to Taxes, except for liens for Taxes not yet due and payable or
liens for Taxes being contested by appropriate proceedings. The Partnership has
no knowledge of any basis for the assertion of any claim which, if adversely
determined, would result in liens on the assets of the Partnership. There is no
contract, agreement, plan or arrangement, including but not limited to the
provisions of this Agreement, covering any employee or former employee of the
Partnership that, individual or collectively, could give rise to the payment of
any amount that would not be deductible pursuant to Sections 280G, 162A or 404
of the Code.
 
    (b)  NO PENALTY. The Partnership is not subject to any penalty by reason of
a violation of any order, rule or regulation of, or a default with respect to
any Partnership Return, report or declaration required to be filed with any
Governmental Entity to which it is subject.
 
    2A.9  RESTRICTIONS ON BUSINESS ACTIVITIES.  There is no agreement binding
upon, or judgment, injunction, order or decree entered against, the Partnership
under which the Partnership is prohibited from conducting or engaging in any
line of business.
 
    2A.10  TITLE OF PROPERTIES; ABSENCE OF LIENS AND ENCUMBRANCES; CONDITION OF
EQUIPMENT.
 
    (a)  The Partnership owns no real property except as set forth in Section
2A.10(a) of the Partnership Disclosure Schedule. Section 2A.10(a) of the
Partnership Disclosure Schedule sets forth a true and complete list of all real
property leased by the Partnership and the aggregate annual rental or other fee
payable under any such lease. All such leases are in good standing, valid and
effective in accordance with their respective terms, and there is not with
respect to the Partnership and, to the knowledge of the Partnership, any other
parties to such leases, under any of such leases any existing default or event
of default (or event which with notice or lapse of time, or both, would
constitute a default).
 
    (b)  Except as set forth in Section 2A.10(b) of the Partnership Disclosure
Schedule, the Partnership holds good and valid title to (or, in the case of
leased properties, assets and rights of way, valid leasehold interests in) all
of its tangible properties, assets and rights of way, real, personal and mixed,
used in its business, free and clear of any liens, charges, pledges, security
interests or other encumbrances. The Partnership has valid and subsisting rights
of way to use all real or personal property in or through which the
Partnership's owned or leased optic or other fiber lines are currently located
or situated.
 
                                       25
<PAGE>
    (c)  The Equipment used by the Partnership in the conduct of its business is
listed in Section 2A.10(c) of the Partnership Disclosure Schedule, except
individual pieces of equipment owned by the Partnership with an individual value
of less than $5,000. The Equipment is, taken as a whole, (i) adequate for the
conduct of the business of the Partnership as currently conducted, (ii) suitable
for the uses to which it is currently employed, (iii) in good operating
condition, (iv) regularly and properly maintained, ordinary wear and tear
excepted, and (v) not obsolete, dangerous or in need of renewal or replacement.
 
    2A.11  INTELLECTUAL PROPERTY.
 
    (a)  The Partnership owns, or is licensed to use, all patents, trademarks,
trade names, service marks, copyrights, and any applications therefor,
maskworks, schematics, technology, know-how, computer software programs or
applications and tangible or intangible proprietary information or material
(excluding Partnership Commercial Software Rights (as defined in Section
2A.11(b) below)) that are used or currently proposed by the Partnership to be
used in the business of the Partnership as currently conducted or as currently
proposed to be conducted by the Partnership (the "Partnership Intellectual
Property Rights"). Section 2A.11(a) of the Partnership Disclosure Schedule (i)
sets forth a complete list of all patents, patent applications, registered
trademarks, material unregistered copyrights, trade names and service marks, and
any applications therefor, included in the Partnership Intellectual Property
Rights; (ii) specifies the jurisdictions in which each such Partnership
Intellectual Property Right has been issued or registered or in which an
application for such issuance and registration has been filed, including the
respective registration or application numbers and the names of all registered
owners, together with a list of all of the Partnership's currently marketed
software products and a list of which, if any, of such software products that
have been registered for copyright protection with the United States Copyright
Office and any foreign offices and by whom such items have been registered and
(iii) as to each such Partnership Intellectual Property Right, specifies whether
it is owned by the Partnership or licensed to the Partnership by another Person
and, in the cases of any licenses, sets forth the licensor and the term of such
license. Section 2A.11(a) of the Partnership Disclosure Schedule also sets forth
a complete list of all licenses, sublicenses and other agreements pursuant to
which the Partnership has licensed any other Person to use any Partnership
Intellectual Property Right or other trade secret material to the Partnership,
and includes the identity of such licensees, provided, however, that End-User
Licenses need not be listed. The Partnership is not, nor will it be as a result
of the execution and delivery of this Agreement or the performance of its
obligations hereunder, in violation of any license, sublicense or agreement
described on such list. The Partnership is the sole and exclusive owner of, with
all right, title and interest in and to (free and clear of any liens or
encumbrances other than End-User Licenses), those Partnership Intellectual
Property Rights which the Partnership purports to own, and has sole and
exclusive rights, and is not contractually obligated to pay any compensation to
any third party in respect thereof to the use thereof or the material covered
thereby in connection with the services or products in respect of which such
Partnership Intellectual Property Rights are being used. With respect to
Partnership Intellectual Property Rights licensed to the Partnership, the
Partnership has sufficient rights under the license agreements relating thereto
to enable the Partnership to use such Partnership Intellectual Property Rights
in its business as currently conducted and as proposed to be conducted without
payment of royalties or other compensation to the licensor thereof. No claims
with respect to the Partnership Intellectual Property Rights have been asserted
or, to the knowledge of the Partnership, are threatened by any Person, (i) to
the effect that the manufacture, sale, licensing or use of any product as now
used, sold or licensed or proposed for use, sale or license by the Partnership
infringes on any copyright, patent, trade mark service mark or trade secret,
(ii) against the use by the Partnership of any trademarks, trade names, trade
secrets, copyrights, patents, technology, know-how or computer software programs
and applications used in the Partnership's business as currently conducted or as
proposed by the Partnership to be conducted, or (iii) challenging the ownership,
validity or effectiveness of any of the Partnership Intellectual Property
Rights. Except as set forth in Section 2A.11(a) of the Partnership Disclosure
Schedule, all registered and material unregistered trademarks, service marks and
copyrights held by the Partnership are valid and subsisting. To the knowledge of
the Partnership, there is no material unauthorized use, infringement or
 
                                       26
<PAGE>
misappropriation of any of the Partnership Intellectual Property Rights by any
third party, including any employee or former employee of the Partnership. No
Partnership Intellectual Property Right owned exclusively by the Partnership or
product of the Partnership is subject to any outstanding order, judgment,
decree, stipulation or agreement restricting in any manner the licensing thereof
by the Partnership. There is no outstanding order, judgment, decree or
stipulation on the Partnership, and the Partnership is not a party to any
agreement, restricting in any manner the licensing of the Partnership's products
by the Partnership. Except for End-User Licenses or as otherwise set forth in
Section 2A.11(a) of the Partnership Disclosure Schedule, the Partnership has not
entered into any agreement to indemnify any Person against any charge of
infringement of any Partnership Intellectual Property Right.
 
    (b)  "Partnership Commercial Software Rights" means packaged commercially
available software programs generally available to the public through retail
dealers in computer software which have been licensed to the Partnership
pursuant to End-User Licenses and which are used in the Partnership's business
but are in no way a component of or incorporated in any of the Partnership's
products and related trademarks, technology and know-how. To the knowledge of
the Partnership, the Partnership has not breached or violated the terms of its
license, sublicense or other agreement relating to any Partnership Commercial
Software Rights and has a valid right to use such Partnership Commercial
Software Rights under such license and agreements. No claims with respect to the
Partnership Commercial Software Rights have been asserted or, to the knowledge
of the Partnership, are threatened by any Person against the Partnership. To the
knowledge of the Partnership, there is no material unauthorized use,
infringement or misappropriation of any of the Partnership Commercial Software
Rights by the Partnership or any employee or former employee of the Partnership
during the period of their employment.
 
    2A.12  AGREEMENTS, CONTRACTS AND COMMITMENTS.  Other than those listed in
Section 2A.12 of the Partnership Disclosure Schedule, the Partnership does not
have, is not a party to nor is it bound by:
 
    (a)  any collective bargaining agreements,
 
    (b)  any agreements that contain any unpaid severance liabilities or
obligations,
 
    (c)  any bonus, deferred compensation, incentive compensation, option,
pension, profit-sharing or retirement plans, or any other employee benefit plans
or arrangements,
 
    (d)  any employment or consulting agreement, contract or commitment (other
than employment letters) with an employee or individual consultant or
salesperson or consulting or sales agreement, contract or commitment with a firm
or other organization, not terminable by the Partnership on thirty days notice
without liability,
 
    (e)  any insurance policy, fidelity or surety bond or completion bond not
listed in Section 2A.20 of the Partnership Disclosure Schedule,
 
    (f)  any lease of personal property having a value individually in excess of
$25,000,
 
    (g)  any agreement of indemnification or guaranty not entered into in the
ordinary course of business,
 
    (h)  any agreement, contract or commitment containing any covenant limiting
the freedom of the Partnership to engage in line of business or compete with any
Person,
 
    (i)  any agreement, contract or commitment relating to capital expenditures
and involving future obligations in excess of $25,000,
 
    (j)  any agreement, contract or commitment relating to the disposition or
acquisition of assets not in the ordinary course of business or any ownership
interest in any corporation, partnership, joint venture or other business
enterprise,
 
                                       27
<PAGE>
    (k)  any mortgages, indentures, loans or credit agreements, security
agreements or other agreements or instruments relating to the borrowing of money
or extension of credit, including guaranties referred to in clause (g) hereof,
 
    (l)  any purchase order or contract for the purchase of raw materials or
acquisition of assets involving $25,000 or more in any single instance or
$100,000 or more in the aggregate,
 
    (m)  any construction contracts involving $25,000 or more in any single
instance or $100,000 or more in the aggregate,
 
    (n)  any distribution, joint marketing or development agreement,
 
    (o)  any lease for switches or any other machinery, equipment or other
personal property involving payment of aggregate rentals in excess of $25,000,
 
    (p)  any contract pursuant to which the Partnership has access to the
telephone network of another Person other than the Partnership's internal
commercial telephone service and any contracts for the resale of any network
capacity of the Partnership,
 
    (q)  any agreement, contract, lease or easement pursuant to which the
Partnership has the right of way to use any premises or real property to locate
and/or install fiber lines on, under or through such premises or real property,
 
    (r)  any agreement or commitment obligating the Partnership to deliver any
product or service at a price which does not cover the cost (including labor,
materials and production overhead), plus a reasonable profit margin, for such
product or service,
 
    (s)  any joint venture, partnership or other cooperative arrangement or
agreement involving a sharing or profits or losses,
 
    (t)  any other agreement, contract or commitment which involves $25,000 or
more and is not cancelable without penalty within thirty (30) days, or
 
    (u)  any agreement which is otherwise material to the Partnership's
business.
 
    The Partnership has not breached, or received any claim or threat that it
has breached, any of the terms or conditions of any material agreement, contract
or commitment to which it is bound (including, but not limited to, those set
forth in Section 2A.12 or any other section of the Partnership Disclosure
Schedule) in such manner as would permit any other party to cancel or terminate
the same. Each agreement, contract or commitment to which the Partnership is a
party and that is required to be set forth in the Partnership Disclosure
Schedule is in full force and effect and, except as otherwise disclosed, is not
subject to any material default thereunder by any party thereto. The Partnership
is not bound by any material contract, agreement, license, lease or other
commitment, a copy of which has not been previously provided or made available
to IWL. The Partnership, after making an inquiry of all of its employees and
Partners and their respective officers, directors, shareholders and appropriate
employees, does not have any reason to expect that any change may occur in the
relationships of the Partnership with its suppliers or customers as a result of
the Interest Exchange, which change would have a Material Adverse Effect on the
Partnership. No supplier of or customer of the Partnership has indicated within
the past year that it will stop, or decrease the rate of supplying or purchasing
materials, products, or services to or from the Partnership, as a result of the
Mergers or the Interest Exchange. Except as described in Section 2A.4, no
consents, waivers or approvals under any of the Partnership's material
agreements, contacts, licenses or leases are necessary in order to preserve the
benefits thereunder for the Surviving Corporation or otherwise to avoid any
breach, default or right of termination or other right as a result of the
Mergers or the Interest Exchange.
 
    2A.13  INTERESTED PARTY TRANSACTIONS.  Except as set forth in Section 2A.13
of the Partnership Disclosure Schedule, no Partner or any officer, director or
shareholder of such Partner (nor any parent, sibling,
 
                                       28
<PAGE>
descendant or spouse of any of such persons, or any trust, partnership,
corporation or other entity in which any of such persons has or has had an
interest), has or has had, directly or indirectly, (a) an interest in any entity
which furnished or sold, or furnishes or sells, services or products which the
Partnership furnished or sells, or proposes to furnish or sell, or (b) any
interest in any entity which purchases from or sells or furnishes to the
Partnership any goods or services, or (c) a beneficial interest in any contract
or agreement required to be set forth in Section 2A.12 of the Partnership
Disclosure Schedule; provided, that ownership of no more than five percent (5%)
of the outstanding voting stock of a publicly traded corporation shall not be
deemed an "interest of any entity" for purposes of this Section 2A.13.
 
    2A.14  GOVERNMENTAL AUTHORIZATIONS.  Section 2A.14 of the Partnership
Disclosure Schedule accurately lists each federal, state, county, local or
foreign governmental consent, license, permit, grant, or other authorization
issued to the Partnership (a) pursuant to which the Partnership currently
operates or holds any interest in any of its properties or (b) which is required
for the operation of its business as currently conducted or the holding of any
such interest as currently held (herein collectively called the "Partnership
Authorizations"). The Partnership Authorizations are in full force and effect
and constitute all the authorizations required to permit the Partnership to
operate or conduct its business as currently conducted or hold any interest in
its properties as currently held.
 
    2A.15  LITIGATION.  Section 2A.15 of the Partnership Disclosure Schedule
accurately lists all suits, actions and legal, administrative, arbitration or
other proceedings and governmental investigations and all other claims pending
against the Partnership or, to the knowledge of the Partnership, threatened or
which the partnership expects will ultimately be threatened or commenced against
the Partnership. None of such suits, actions, proceedings, investigations or
claims seek to prevent the consummation of the Mergers or the Interest Exchange.
There is no judgment, degree or order enjoining the Partnership in respect of,
or the effect of which is to prohibit, any business practice or the acquisition
of any property or the conduct of business of the Partnership. Section 2A.15 of
the Partnership Disclosure Schedule also lists all suits and legal actions
initiated by the Partnership which are still pending or which have been
concluded in the last two years.
 
    2A.16  ACCOUNTS RECEIVABLE.  All accounts receivable of the Partnership
shown in the Partnership Balance Sheet arose in the ordinary course of business
and, to the extent not previously collected, are collectible (except to the
extent reserved against as reflected in the Partnership's Partnership Financial
Statements) and are carried at values determined in accordance with GAAP
consistently applied. To the knowledge of the Partnership, none of the accounts
receivable of the Partnership outstanding as of the date hereof is subject to
any claim of offset, recoupment, set off or counterclaim, and there are no facts
or circumstances (whether asserted or unasserted) that would give rise to any
such claim. No accounts receivable are contingent upon the performance by the
Partnership of any obligation or contract except for the Partnership's
maintenance obligations under its maintenance agreements (although no customer
has claimed that the Partnership has failed to perform its maintenance
obligations). No Person has any lien, charge, pledge, security interest or other
encumbrance on any of the Partnership's accounts receivable and no agreement for
deduction or discount has been made with respect to any of such accounts
receivable, except for liens granted to Bank One Texas, N.A. under the
Partnership's revolving line of credit.
 
    2A.17  ENVIRONMENTAL AND OSHA.
 
    (a)  The Partnership has complied in all material respects with all
Environmental Laws and Employee Safety Laws, and no charge, action, suit,
proceeding, hearing, known investigation, claim, damage, or notice has been
filed or commenced against the Partnership alleging any failure to comply with
any such law or regulation.
 
    (b)  The Partnership has no obligation to take remedial action with respect
to any conditions nor does the Partnership have any liability, and there is no
basis related to the Partnership's past or present operations, for any present
charge, complaint, action, suit, proceeding, hearing, investigation, claim, or
demand giving rise to any liability or obligation to take any remedial action
under any Environmental Law.
 
                                       29
<PAGE>
    (c)  Except as set forth in Section 2A.17(c) of the Partnership Disclosure
Schedule, the Partnership has no liability relating to, and it has not handled
or disposed of any substance, arranged for the disposal of any substance, or
owned or operated any property or facility in violation of any Environmental
Law.
 
    (d)  The Partnership has no liability for, and there is no basis for, any
present or future charge, complaint, action, suit, proceeding, hearing,
investigation, claim, or demand against the Partnership giving rise to any
material liability under any Employee Safety Laws.
 
    (e)  The Partnership has no liability relating to, and to the knowledge of
the Partnership, the Partnership has not exposed any of the Partnership's
employees to any substances or conditions that could form the basis for, any
present charge, complaint, action, suit, proceeding, hearing, investigation,
claim, or demand (under the common law or pursuant to statute) against the
Partnership giving rise to material liability for any illness of or personal
injury to any employee.
 
    (f)  The Partnership has been in compliance with all the terms and
conditions of all permits, licenses, and other authorizations of Governmental
Entities which are required under any Environmental Law or Employee Safety Law.
 
    (g)  All properties and equipment used by the Partnership are free of
asbestos, PCB's and other Extremely Hazardous Substances (as defined in Section
302A of the Emergency Planning and Community Right-to-Know Act of 1986, as
amended). To the knowledge of the Partnership, no pollutant, contaminant,
chemical, or industrial, hazardous, or toxic material or waste has been buried,
stored, spilled, leaked, discharged, emitted, or released on any real property
that the Partnership has ever owned, or that the Partnership now leases or has
ever leased.
 
    2A.18  BROKERS' AND FINDERS' FEES.  The Partnership has not incurred, nor
will it incur, directly or indirectly, any liability for brokerage or finders,
fees or agents' commissions or any similar charges in connection with this
Agreement or any transaction contemplated hereby.
 
    2A.19  LABOR MATTERS.  The Partnership is in compliance in all material
respects with all currently applicable laws and regulations respecting
employment, discrimination in employment, terms and conditions of employment and
wages and hours and employment practices, and is not engaged in any unfair labor
practice. The Partnership has not received any notice from any Governmental
Entity of, and to the knowledge of the Partnership there has not been asserted
before any Governmental Entity, any claim of action or proceeding to which the
Partnership is a party or involving the Partnership, and there is neither
pending nor, to the knowledge of the Partnership, threatened any investigation
or hearing concerning the Partnership arising out of or based upon any such
laws, regulations or practices. There are no pending claims against the
Partnership under any workers compensation plan or policy or for long term
disability. The Partnership has complied in all material respects with all
applicable health care benefit continuation provisions of COBRA and has no
obligations with respect to any former employees or qualified beneficiaries
thereunder. Section 2A.19 of the Partnership Disclosure Schedule lists all
current employees of the Partnership and their current salary and vacation
accruals.
 
    2A.20  INSURANCE.  Section 2A.20 of the Partnership Disclosure Schedule
lists all insurance policies and fidelity bonds covering the assets, business,
equipment, properties, operations, software errors and omissions, employees,
officers and directors of the Partnership as well as all claims made under any
insurance policy by the Partnership since January 1, 1993 (other than claims
under the Partnership's medical and dental insurance plans). There is no claim
by the Partnership pending under any of such policies or bonds as to which
coverage has been questioned, denied or disputed by the underwriters of such
policies or bonds as to which coverage has been questions, denied or disputed by
the underwriters of such policies or bonds (other than claims made under the
Partnership's medical and dental insurance plans). The Partnership has provided
or made available to IWL copies of all such insurance policies and fidelity
bonds and all claims made by the Partnership under its insurance policies (other
than claims under the Partnership's medical and dental plans). All premiums
payable under all such policies and bonds have been
 
                                       30
<PAGE>
paid and the Partnership is otherwise in compliance in all material respects
with the terms of such policies and bonds (or other policies and bonds providing
substantially similar insurance coverage). Such policies of insurance and bonds
are of the type and in amounts customarily carried by Persons conducting
businesses similar to those of the Partnership. The Partnership does not know of
any threatened termination of or proposed material premium increase with respect
to any of such policies. The Partnership has never been denied insurance
coverage nor has any insurance policy of the Partnership ever been canceled for
any reason.
 
    2A.21  INVENTORY.  The inventory appearing on the Partnership Financial
Statements, or thereafter acquired or produced, conforms in all material
respects with the Partnership's applicable specifications and warranties and
have been produced in compliance with the Partnership's quality control
procedures and consist only of items of a quality and quantity useable or
saleable by the Partnership in the ordinary course of business. All such
inventory is merchantable and fit for the purpose for which it was procured or
manufactured, and none of which is obsolete, damaged or defective in any amount.
Such inventory is owned by the Partnership and is not subject to any liens,
charges, pledges, security interests or other encumbrances.
 
    2A.22  COMPLIANCE WITH LAWS.
 
    (a)  The Partnership has complied in all material respects with, is not in
violation of, and has not received any notices of violation with respect to any
federal, state or local statute, law or regulation with respect to the conduct
of its business or the ownership or operations of its business, assets or
properties. No charge, complaint, action, suit, proceeding, hearing, known
investigation, claim, demand, or notice has been filed or commenced against
alleging any failure to comply with any such law or regulation.
 
    (b)  The Partnership has not violated in any respect, or received a notice
or charge asserting any violation of the Sherman Act, the Clayton Act, the
Robinson-Patman Act, or the Federal Trade Commission Act, each as amended.
 
    (c)  The Partnership has not, and none of the Partners or employees of the
Partnership have, on behalf of the Partnership:
 
        (i)  made or agreed to make any contribution, payment or gift of funds
    or property to any governmental official, employee, or agent where either
    the contribution, payment, or gift or the purpose thereof was illegal under
    the laws of any federal, state or local jurisdiction; or
 
        (ii)  established or maintained any unrecorded fund or asset for any
    purpose, or intentionally made any false or inaccurate entries on any of its
    books and/or records; or
 
           (iii) made or agreed to make any contribution, or reimbursed any
       political gift or contribution made by any other Person, to any candidate
       for federal, state or local public office; or
 
            (iv) been involved in the disbursement or receipt of funds outside
       of the normal internal control systems of accountability or been involved
       in the improper or inaccurate recording of material payments,
       disbursements or receipts.
 
    2A.23  REGISTRATION STATEMENT; JOINT PROXY STATEMENT.  None of the
information supplied or to be supplied by or on behalf of the Partnership for
inclusion or incorporation by reference, and reviewed by the Partnership prior
to such inclusion or incorporation by reference, in the Registration Statement
will, at the time the Registration Statement becomes effective under the
Securities Act, contain any untrue statement of a material fact or omit to state
any material fact required to be stated therein or necessary to make the
statements therein, in light of the circumstances under which they were made,
not misleading. None of the information supplied or to be supplied by or on
behalf of the Partnership for inclusion or incorporation by reference, and
reviewed by the Partnership prior to such inclusion or incorporation by
reference, in the Joint Proxy Statement will, at the dates mailed to
shareholders and at the times of the IWL shareholders' meeting and the Partners'
meeting, contain any untrue statement of a material fact or
 
                                       31
<PAGE>
omit to state any material fact required to be stated therein a necessary in
order to make the statements therein, in light of the circumstances under which
they are made, not misleading. If at any time prior to the Effective Time any
event with respect to the Partnership or its Partners should occur which is
required to be described in an amending of, or a supplement to, the Registration
Statement or the Joint Proxy Statement, the Partnership shall promptly so advise
IWL. The Partnership will promptly disseminate any such amendment or supplement
to the Partners of the Partnership.
 
    2A.24  ACCOUNTING MATTERS.  Neither the Partnership nor, to its knowledge,
any of its affiliates has through the date hereof taken or agreed to take any
action that would prevent the business combination to be effected by the Mergers
and the Interest Exchange from being accounted for as a "pooling of interests."
 
    2A.25  FIRPTA.  The Partnership is not, and has not been at any time, a
"United States real property holding corporation" within the meaning of Section
897(c)(2A) of the Code.
 
    2A.26  EMPLOYEE BENEFIT PLANS.
 
        (a) Section 2A.26 of the Partnership Disclosure Schedule lists all
    employee benefit plans (as defined in Section 3(3) of ERISA) and all bonus,
    incentive, deferred compensation, supplemental retirement, severance and
    other similar fringe or employee benefit plans, programs or arrangements,
    and any current or former employment or executive compensation or severance
    agreements, written or otherwise, for the benefit of, or relating to, any
    employee of the Partnership (together, the "Partnership Employee Plans"),
    and a copy of each such Partnership Employee Plan has been provided or made
    available to IWL.
 
        (b) (i) None of the Partnership Employee Plans promises to provides
    retiree medical or other retiree welfare benefits to any person except as
    required by applicable law, including but not limited to COBRA; (ii) all
    Partnership Employee Plans are in compliance in all material respects with
    the requirements prescribed by any and all applicable statues (including
    ERISA and the Code), orders, or governmental rules and regulations currently
    in effect with respect thereto (including all applicable requirements for
    the notification to participants or beneficiaries or the Department of
    Labor, IRS or Secretary of the Treasury), and the Partnership has performed
    in all material respects all obligations required to be performed by it
    under, is not in default under or violation of, and has no knowledge of any
    default or violation by any other party to, any of the Partnership Employee
    Plans; (iii) each Partnership Employee Plan intended to qualify under
    Section 401(a) of the Code and each trust intended to qualify under Section
    501(a) of the Code either has received a favorable determination letter and
    to make any amendments necessary to obtain a favorable determination; and
    (iv) no Partnership Employee Plan is or within the prior six (6) years has
    been subject to, and the Partnership has not incurred and does not expect to
    incur any liability under, Title IV or ERISA or Section 412A of the Code and
    (v) nothing in any Partnership Employee Plan precludes or interferes with
    Holdings' ability to cause the Partnership to terminate (or consolidate, at
    Holdings' option) any Partnership Employee Plan after the Closing, provided
    that (A) the Partnership Employee Plan may be terminated prospectively only,
    subject to rights accrued by the Partnership's employees at the time of such
    termination and (B) not more than sixty days notice may be required to
    terminate certain Partnership Employee Plans.
 
        (c) None of the following now exists or has existed within the six-year
    period ending on the date hereof with respect to any Partnership Employee
    Plan: (i) any act or omission by the Partnership constituting a violation of
    Section 402A or 403 or, to the knowledge of the Partnership, Section 404 or
    405 of ERISA; (ii) to the knowledge of the Partnership, any act or omission
    by the Partnership which constitutes a violation of Sections 406 and 407 of
    ERISA and is not exempted by Section 408 of ERISA or which constitutes a
    violation of Section 4975(c) of the Code and is not exempted by Section
    4975(d) of the Code; (iii) any act or omission by the Partnership
    constituting a violation of Section 503 or 511, to the knowledge of the
    Partnership, Section 510 of ERISA; or (iv) any act or
 
                                       32
<PAGE>
    omission by the Partnership which could give rise to liability under Section
    502A of ERISA or under Sections 4979 or 4975 through 4980 of the Code or any
    other provisions of ERISA or the Code.
 
        (d) Each Partnership Employee Plan has been maintained in substantial
    compliance with its terms, and all contributions, premiums or other payments
    due from the Partnership to (or under) any such Partnership Employee Plan
    have been fully paid or adequately provided for on the Partnership Financial
    Statements for the most recently ended fiscal year. All accruals thereon
    (including, where appropriate proportional accruals for partial periods have
    been made in accordance with GAAP consistently applied on a reasonable
    basis. There has been no amendment, written interpretation or announcement
    (whether or not written) by the Partnership with respect to, or change in
    employee participation or coverage under, any Partnership Employee Plan that
    would increase materially the expense of maintaining such plans or
    arrangements, individually or in the aggregate, above the level of expense
    incurred with respect thereto for the most recently ended fiscal year.
 
        (e) The Partnership has made available to IWL complete, accurate and
    current copies of all Partnership Employee Plans and all amendments,
    documents, correspondence addressed to the Partnership and filings relating
    thereto, including but not limited to any statements, filings, reports or
    returns filed with any governmental agency with respect to the Partnership
    Employee Plans at any time within the three-year period ending on the date
    hereof.
 
    2A.27  OWNERSHIP OF SECURITIES.  As of the date hereof, none of the
Partnership or any of its affiliates or associates (as such terms are defined
under the Exchange Act), (a)(i) beneficially owns, directly or indirectly, or
(ii) is party to any agreement, arrangement or understanding for the purpose of
acquiring, holding, voting or disposing of, in each case, shares of capital
stock of IWL that in the aggregate represent 10% or more of the outstanding
shares of IWL Common Stock, or (b) is an "affiliated shareholder" of IWL within
the meaning of Article XIII of the TBCA. Neither the Partnership nor any of its
Partners own any shares of IWL Common Stock.
 
    2A.28  CERTAIN REGULATORY MATTERS.
 
        (a) Except as disclosed in Section 2A.28 of the Partnership Disclosure
    Schedule and except for billing disputes with customers arising in the
    ordinary course of business that in the aggregate involve immaterial
    amounts, there are no proceedings or, to the Partnership's knowledge,
    investigations pending or threatened before any domestic or foreign court,
    administrative, governmental or regulatory body in which any of the
    following matters are being considered which could reasonably be expected to
    have a Material Adverse Effect on the Partnership, nor has the Partnership
    received written notice or inquiry from any such body, government official,
    advocacy or similar organization or any private party indicating that any of
    such matters should be considered or may become the object of consideration
    or investigation which could reasonably be expected to have a Material
    Adverse Effect on the Partnership: (i) reduction of rates charged to
    customers; (ii) reduction of earnings; (iii) refunds of amounts previously
    charged to customers; (iv) failure to meet any expense, infrastructure,
    service quality or other commitments previously made to or imposed by any
    administrative, governmental or regulatory body; or (v) increase in
    termination or access charges or other rates paid or payable by the
    Partnership to its suppliers.
 
        (b) Except as disclosed in Section 2A.28 of the Partnership Disclosure
    Schedule, the Partnership has no outstanding commitments (and no such
    obligations have been imposed upon the Partnership and remain outstanding)
    regarding (i) reduction of rates charged to customers; (ii) reduction of
    earnings; (iii) refunds of amounts previously charged to customers; or (iv)
    expenses, infrastructure expenditures, service quality or other regulatory
    requirements to or by any domestic or foreign court, administrative,
    governmental or regulatory body, government official, consumer advocacy or
    similar organization, in each case which could reasonably be expected to
    have a Material Adverse Effect on the Partnership.
 
                                       33
<PAGE>
        (c) The Partnership has not transferred, sold any interest in, or
    otherwise diluted its control over any federal or state regulatory licenses,
    certificates, approvals or other authorizations under which it operates, and
    the transfer of such authorizations, subject to regulatory approval, would
    not violate the terms of any agreement to which the Partnership is a party
    or by which the Partnership is bound, or impinge the rights of any third
    party.
 
        (d) The Partnership has no current liability (and there is no basis for
    any present or future charge, complaint, action, suit, proceeding, hearing,
    investigation, claim, or demand against the Partnership giving rise to any
    liability) arising out of any injury to persons or property as a result of
    the ownership, possession, or use of any product manufactured, sold, leased,
    or delivered by the Partnership. Any such claims would be fully covered to
    the extent of the dollar limitations of the Partnership's product liability
    insurance. There are no recalls, threatened or pending, and no federal
    investigative reports have been filed or were required to have been filed
    with respect to any of the Partnership's products.
 
    2A.29  REPRESENTATIONS COMPLETE.  None of the representations or warranties
made by the Partnership in this Agreement, nor any statement made in any
Schedule, Exhibit or certificate furnished by the Partnership pursuant to this
Agreement, when read in their entirety, contains or will contain any untrue
statement of a material fact at the Effective Time, or omits or will omit to
state any material fact necessary in order to make the statements contained
herein or therein, in the light of the circumstances under which made, not
misleading. No warranty or representation shall be deemed to have been made by
the Partnership except for the warranties and representations set forth in this
Agreement and the Exhibits, Schedules and certificates delivered pursuant
hereto.
 
                                  ARTICLE III
       REPRESENTATIONS AND WARRANTIES OF IWL AND THE MERGER SUBSIDIARIES
 
    Except as set forth in the IWL Disclosure Schedule attached hereto and
incorporated by reference herein (the "IWL Disclosure Schedule"), and subject to
Section 3.31, IWL and I-Sub and C-Sub (collectively, the "Merger Subsidiaries")
hereby jointly and severally represent and warrant to the Company and the
Partnership (and, unless the context indicates otherwise, all of such
representations and warranties shall be deemed made with respect to IWL and the
Merger Subsidiaries, their respective Subsidiaries (other than as set forth in
Section 3.31) and their respective predecessors, if any) that, as of the date
hereof:
 
    3.1  ORGANIZATION, STANDING AND POWER.  Each of IWL and its Subsidiaries
(including each Merger Subsidiary) is a corporation duly organized, validly
existing and in good standing under the laws of its state or other jurisdiction
of incorporation. Each of IWL and its Subsidiaries has the corporate power to
own its properties and to carry on its business as now being conducted and as
proposed to be conducted and is duly qualified to do business and is in good
standing in each jurisdiction in which the failure to be so qualified would have
a Material Adverse Effect on IWL and its Subsidiaries taken as a whole. IWL has
made available a true and correct copy of the Articles of Incorporation and
Bylaws of each of IWL and its Subsidiaries, as amended to date, to counsel for
the Company and the Partnership.
 
    3.2  CAPITAL STRUCTURE.
 
        (a) The authorized stock of IWL consists of 100,000,000 shares of common
    stock, par value $0.01 per share, of which 3,754,230 shares were issued and
    outstanding as of December 31, 1997, and 10,000,000 shares of preferred
    stock, par value $.01 per share, of which no shares are issued or
    outstanding as of the date hereof. The authorized capital stock of Holdings
    consists of 100,000,000 shares of common stock, par value $.01 per share,
    and 10,000,000 shares of preferred stock, par value $.01 per share. The
    authorized capital stock of each Merger Subsidiary consists of 1,000 shares
    of common stock, par value $0.01 per share. Holdings has 1,000 shares of
    common stock issued and outstanding as of the date hereof, which are held by
    IWL, and I-Sub and C-Sub each have 1,000 shares
 
                                       34
<PAGE>
    of common stock issued and outstanding as of the date hereof, which are held
    by Holdings. All such shares have been duly authorized, and all such issued
    and outstanding shares have been validly issued (free of preemptive rights),
    are fully paid and nonassessable and are free of any liens or encumbrances
    other than any liens or encumbrances created by or imposed upon the holders
    thereof. IWL has also reserved (i) 146,695 shares of IWL Common Stock for
    issuance to employees and consultants pursuant to IWL's Employee Incentive
    Stock Option Plan, (ii) 300,000 shares of IWL Common Stock for issuance to
    employees and consultants pursuant to IWL's 1997 Stock Option Plan, and
    (iii) 100,000 shares of Common Stock for issuance to outside directors of
    IWL under IWL's 1997 Director Stock Option Plan. Except as set forth in the
    preceding sentence and except as set forth in Section 3.2 of the IWL
    Disclosure Schedule, IWL has not reserved any shares of its capital stock
    for future issuance.
 
        (b) Except as set forth in Section 3.2 of the IWL Disclosure Schedule,
    there are no outstanding IWL Equity Rights. For purposes of this Agreement,
    "IWL Equity Rights" shall mean subscriptions, options, warrants, calls,
    commitments, agreements, conversion rights or other rights of any character
    (contingent or otherwise) to purchase or otherwise acquire from IWL or any
    of IWL's Subsidiaries at any time, or upon the happening or any stated
    event, any shares of the capital stock of IWL.
 
        (c) Section 3.2 of the IWL Disclosure Schedule sets forth for each
    outstanding IWL Equity Right the name of the holder of such IWL Equity
    Right, the number of shares subject to such IWL Equity Right, the exercise
    price of such IWL Equity Right and the number of shares as to which such IWL
    Equity Right is exercisable, and, if the exercisabilty of such IWL Equity
    Right will be accelerated in any way by the transactions contemplated by
    this Agreement, an indication of the extent of such acceleration. Section
    3.2 of the IWL Disclosure Schedule also describes any repricing of any IWL
    Equity Rights which has taken place since January 1, 1993. IWL has made
    available to the Company and the Partnership copies of all agreements
    relating to IWL Equity Rights.
 
        (d) Since January 1, 1993, IWL has not repurchased any of its capital
    stock.
 
        (e) There are no outstanding obligations of IWL or any of IWL's
    Subsidiaries or of ICEL to repurchase, redeem or otherwise acquire any
    shares of capital stock of IWL.
 
        (f) All of the outstanding capital stock of each of IWL's Subsidiaries
    was duly authorized and validly issued (free of preemptive rights) and is
    fully paid and nonassessable, and, except as set forth in Section 3.2 of the
    IWL Disclosure Schedule or in Section 3.2(a), is owned by IWL free and clear
    of any liens, security interests, pledges, agreements, claims, charges or
    encumbrances. IWL owns all of the issued and outstanding shares of capital
    stock of ICEL. Except as set forth in Section 3.2 of the IWL Disclosure
    Schedule, there are no existing subscriptions, options, warrants, calls,
    commitments, agreements, conversion rights or other rights of any character
    (contingent or otherwise) to purchase or otherwise acquire from IWL, any of
    IWL's Subsidiaries or ICEL at any time, or upon the happening of any stated
    event, any shares of the capital stock of any IWL's Subsidiaries or of ICEL,
    or any securities convertible into or exercisable for shares of capital
    stock of any of IWL's Subsidiaries or of ICEL, whether or not presently
    issued or outstanding and there are no outstanding obligations of IWL or of
    any of IWL's Subsidiaries or of ICEL to repurchase, redeem or otherwise
    acquire any shares of capital stock of any of IWL's Subsidiaries or of ICEL.
    Except for equity interests disclosed in Section 3.2 of the IWL Disclosure
    Schedule and equity interests in its Subsidiaries, IWL does not directly or
    indirectly own any equity interest in any other Person. Each of IWL's
    Subsidiaries is a wholly owned Subsidiary.
 
        (g) Except as disclosed in Section 3.2 of the IWL Disclosure Schedule,
    there are no shareholder agreements, voting trusts or other agreements or
    understandings to which IWL, any Subsidiary or ICEL is a party or to which
    it is bound relating to the voting or registration of any shares of capital
    stock of IWL or any Subsidiary. IWL has not taken any action that would
    result in, nor is IWL a party to any agreement, arrangement or understanding
    not disclosed in Section 3.2 of the IWL Disclosure Schedule that would
    result in, any options to purchase IWL Common Stock that are unvested
 
                                       35
<PAGE>
    becoming vested in connection with or as a result of the execution and
    delivery of this Agreement or the consummation of the transactions
    contemplated hereby.
 
        (h) The shares of Holdings Common Stock to be issued pursuant to the
    Mergers and in the Interest Exchange will be duly authorized, validly
    issued, fully paid, and nonassessable.
 
    3.3  AUTHORITY.  IWL and the Merger Subsidiaries have all requisite
corporate power and authority to enter into this Agreement and to consummate the
Mergers and the Interest Exchange and the other transactions contemplated
hereby. The execution and delivery of this Agreement and the consummation of the
transactions contemplated hereby have been duly authorized by all necessary
corporate action on the part of IWL and the Merger Subsidiaries. This Agreement
has been duly executed and delivered by IWL and the Merger Subsidiaries and
constitutes the valid and binding obligations of IWL and the Merger Subsidiaries
enforceable in accordance with its terms. The execution and delivery of this
Agreement do not, and the consummation of the transactions contemplated hereby
will not, result in any violation of, or default under (with or without notice
or lapse of time, or both), or give rise to a right of termination, cancellation
or acceleration of any obligation or to loss of a material benefit under (a) any
provision of the Articles of Incorporation or Bylaws of IWL and the Merger
Subsidiaries or (b) any mortgage, indenture, lease, contract or other agreement
or instrument, permit, concession, franchise, license, judgment, order, decree,
statute, law, ordinance, rule or regulation applicable to IWL or its properties
or assets, other than any such violations, defaults, terminations, cancellations
or accelerations which individually or in the aggregate would not have a
Material Adverse Effect on the ability of IWL to consummate the transactions
contemplated hereby (or which have been consented to or waived on or prior to
the Closing Date). Except as set forth in Section 3.3 of the IWL Disclosure
Schedule, no consent, approval, order or authorization of, or registration,
declaration or filing with any Governmental Entity is required by or with
respect to IWL and the Merger Subsidiaries in connection with the execution and
delivery of this Agreement by IWL and the Merger Subsidiaries or the
consummation by IWL and the Merger Subsidiaries of the transactions contemplated
hereby, except for (a) the filing of the Articles of Merger with the Secretary
of State of Texas, (b) such consents, approvals, orders, authorizations,
registrations, declarations and filings as may be required by the Nasdaq
National Market or under applicable state and federal securities laws, (c) any
consents or approvals required by the Federal Communications Commission ("FCC")
or any state public utility commissions, and (d) such other consents,
authorizations, filings, approvals and registrations which if not obtained or
made would not have a Material Adverse Effect on the ability of IWL and the
Merger Subsidiaries to consummate the transactions contemplated hereby.
 
    3.4  SEC DOCUMENTS; IWL FINANCIAL STATEMENTS.  IWL has furnished or made
available to the Company and the Partnership a true and complete copy of its
Form 10-K for the fiscal year ended June 30, 1997, and its Form 10-Q for the
quarter ended September 30, 1997 (collectively, the "SEC Documents"), which IWL
filed under the Exchange Act with the SEC. As of their respective filing dates,
the SEC Documents complied in all material respects with the requirements of the
Exchange Act, and none of the SEC Documents contained any untrue statement of a
material fact or omitted to state a material fact required to be stated therein
or necessary to make the statements made therein, in light of the circumstances
under which they were made, not misleading, except to the extent corrected by a
subsequently filed document with the SEC. The financial statements of IWL,
including the notes thereto, included in the SEC Documents (the "IWL Financial
Statements") comply as to form in all material respects with applicable
accounting requirements and with the published rules and regulations of the SEC
with respect thereto, have been prepared in accordance with GAAP consistently
applied (except as may be indicated in the notes thereto or, in the case of
unaudited statements, as permitted by Form 10-Q of the SEC) and fairly present
the consolidated financial position of IWL at the dates thereof and of its
operations and cash flows for the periods then ended (subject, in the case of
unaudited statements, to normal, recurring audit adjustments).
 
                                       36
<PAGE>
    3.5  BROKERS AND FINDERS' FEES.  Except for Cruttenden Roth Incorporated
(the arrangements with which have been disclosed to the Company prior to the
date hereof), IWL has not incurred, and will not incur, directly or indirectly,
any liability for brokerage or finders' fees or agents' commissions, advisory
fees or any similar charges in connection with this Agreement, the Mergers, the
Interest Exchange or any other transaction contemplated hereby.
 
    3.6  REGISTRATION STATEMENT; JOINT PROXY STATEMENT.  None of the information
supplied or to be supplied by or on behalf of IWL for inclusion or incorporation
by reference, and reviewed by IWL prior to such inclusion or incorporation by
reference, in the Registration Statement will, at the time the Registration
Statement becomes effective under the Securities Act, contain any untrue
statement of a material fact or omit to state any material fact required to be
stated therein or necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading. None of the
information supplied or to be supplied by or on behalf of IWL for inclusion or
incorporated by reference, and reviewed by IWL prior to such inclusion or
incorporation by reference, in the Joint Proxy Statement will, at the dates
mailed to shareholders and at the times of the IWL shareholders' meeting and the
Company shareholders' meeting, contain any untrue statement of a material fact
or omit to state any material fact required to be stated therein or necessary in
order to make the statements therein, in light of the circumstances under which
they are made, not misleading. If at any time prior to the Effective Time, any
event with respect to IWL, its officers and directors or any of its Subsidiaries
should occur which is required to be described in an amendment of, or a
supplement to, the Registration Statement or the Joint Proxy Statement, IWL
shall promptly so advise the Company. IWL will promptly disseminate any such
amendment or supplement (which the Company shall have a reasonable opportunity
to review) to the shareholders of IWL.
 
    3.7  OPINION OF FINANCIAL ADVISOR.  IWL has received the oral opinion of
Cruttenden Roth Incorporated on the date hereof, to the effect that, as of the
date hereof, the IWL Exchange Ratio is fair from a financial point of view to
the shareholders of IWL and that the Company Merger Consideration is fair from a
financial point of view to IWL, and will, within two business days of the date
hereof, have received the written opinion of Cruttenden Roth Incorporated to
such effect.
 
    3.8  OWNERSHIP OF SECURITIES.  As of the date hereof, neither IWL nor, to
IWL's knowledge, any of its affiliates or associates (as such terms are defined
under the Exchange Act), (a)(i) beneficially owns, directly or indirectly, or
(ii) is party to any agreement, arrangement or understanding for the purpose of
acquiring, holding, voting or disposing of, in each case, shares of capital
stock of the Company that in the aggregate represent 10% or more of the
outstanding shares of Company Common Stock, nor (b) is an "affiliated
shareholder" of the Company within the meaning of Article XIII of the TBCA.
Neither IWL nor any of the Merger Subsidiaries owns any shares of Company Common
Stock.
 
    3.9  LITIGATION.  Except as set forth in the SEC Documents or in Section 3.9
of the IWL Disclosure Schedule, there are no suits, actions or legal,
administrative, arbitration or other proceedings or governmental investigations
against IWL or any of the Merger Subsidiaries pending or, to IWL's knowledge,
threatened which (a) if determined adversely to IWL, could be expected to result
in a Material Adverse Effect on IWL, or (b) seek to prevent the consummation of
the Mergers or the Interest Exchange.
 
    3.10  NO UNDISCLOSED LIABILITIES.  IWL does not have any liabilities or
obligations, either accrued or contingent, whether or not required to be
reflected in financial statements prepared in accordance with GAAP, and whether
due or to become due, except: (a) liabilities reflected in the SEC Documents,
(b) liabilities specifically described in this Agreement or in the IWL
Disclosure Schedule or (c) liabilities not exceeding $50,000 in the aggregate
incurred in the ordinary course of business since September 30, 1997.
 
    3.11  NO CHANGES.  Except as set forth in Section 3.11 of the IWL Disclosure
Schedule or as contemplated by this Agreement, since September 30, 1997 there
has not been, occurred or arisen any:
 
    (a)  transaction by IWL except in the ordinary course of business as
conducted on that date;
 
                                       37
<PAGE>
    (b)  capital expenditure or inventory purchase by IWL exceeding $25,000
individually or $100,000 in the aggregate, except pursuant to existing contracts
listed in Section 3.16 of the IWL Disclosure Schedule;
 
    (c)  destruction, damage to, or loss of any assets (including without
limitation intangible assets) of IWL (whether or not covered by insurance),
either individually or in the aggregate, exceeding $25,000;
 
    (d)  labor trouble or claim of wrongful discharge or other unlawful labor
practice or action;
 
    (e)  change in accounting methods or practices (including any change in
depreciation or amortization policies or rates, any change in policies in making
or reversing accruals, or any change in capitalization of software development
costs) by IWL;
 
    (f)  declaration, setting aside, or payment of a dividend or other
distribution in respect of the shares of IWL, or any direct or indirect
redemption, purchase or other acquisition by IWL of any of its shares;
 
    (g)  increase in the salary or other compensation payable or to become
payable by IWL to any of its officers, directors or employees, or the
declaration, payment, or commitment or obligation of any kind for the payment by
IWL of a bonus or other additional salary or compensation to any such person
except for year-end bonuses paid in the ordinary course of business consistent
with past practice;
 
    (h)  acquisition, sale or transfer or any asset of IWL except in the
ordinary course of business;
 
    (i)  formation, amendment or termination of any material distribution
agreement or any material contract, agreement or license to which IWL is a
party, other than termination by IWL pursuant to the terms thereof;
 
    (j)  loan by IWL to any Person or guaranty by IWL of any loan;
 
    (k)  waiver or release of any material right or claim of IWL, including any
write-off or other compromise of any account receivable of IWL except in the
ordinary course of business;
 
    (l)  the commencement or notice or, to the knowledge of IWL, threat of
commencement of any governmental proceeding against or investigation of IWL or
its affairs;
 
    (m)  other event or condition of any character relating to IWL or IWL's
business that has or would be expected to have a Material Adverse Effect on IWL;
 
    (n)  issuance, sale or redemption by IWL of any of its shares or of any
other of its securities, other than pursuant to the exercise of existing
options;
 
    (o)  change in pricing or royalties set or charged by IWL except pursuant to
the terms of existing contracts; or
 
    (p)  negotiation or agreement by IWL to do any of the things described in
the preceding clauses (a) through (o) (other than negotiations with IWL and its
representatives or any other Person regarding the transactions contemplated by
this Agreement).
 
    3.12  TAX AND OTHER RETURNS AND REPORTS.
 
    (a)  TAX RETURNS AND AUDITS.  Except as set forth in Section 3.12 of the IWL
Disclosure Schedule, each of IWL and its Subsidiaries has prepared and filed all
federal, state, local and foreign returns, estimates, information statements and
reports required to be filed by any of them relating to any and all Taxes
relating or attributable to IWL, its Subsidiaries, or the assets or operations
of IWL or its Subsidiaries ("IWL Returns"), and such IWL Returns are true and
correct in all material respects and have been completed in accordance with
applicable law. Except as set forth in Section 3.12 of the IWL Disclosure
Schedule, each of IWL and its Subsidiaries has paid all Taxes required to be
paid with respect to such IWL Returns and has withheld with respect to its
employees all federal and state income Taxes, FICA, FUTA and other Taxes it is
required to withhold. The accruals for Taxes on the books and records of each of
IWL and its Subsidiaries are sufficient to discharge the Taxes for all periods
(or the portion of any period)
 
                                       38
<PAGE>
ending on or prior to the Closing Date. Neither IWL nor any of its Subsidiaries
is delinquent in the payment of any Tax nor, except as set forth in Section 3.12
of the IWL Disclosure Schedule, to the knowledge of IWL is there any Tax
deficiency outstanding, proposed or assessed against IWL or any of its
Subsidiaries nor has IWL or any of its Subsidiaries executed any waiver of any
statute of limitations on or extending the period for the assessment or
collection of any Tax. The audits of each IWL Return that has been audited by
the relevant authorities or for which the statute of limitations has been waived
or extended have been closed, and neither IWL nor any of its Subsidiaries has
received any written or oral notification that an audit or other examination of
any Return of IWL or any of its Subsidiaries is presently in progress. All such
IWL Returns that have been audited or for which the statute of limitations has
been waived are listed in Section 3.12 of the IWL Disclosure Schedule. Except as
set forth in Section 3.12 of the IWL Disclosure Schedule, neither IWL nor any of
its Subsidiaries has any material liabilities for unpaid Taxes, whether asserted
or unasserted, known or unknown, contingent or otherwise and neither IWL nor any
of its Subsidiaries has any knowledge of any basis for the assertion of any such
liability attributable to IWL, its Subsidiaries or the assets or operations of
IWL or its Subsidiaries. Neither IWL nor any of its Subsidiaries is (nor have
they ever been) required to join with any other entity in the filing of a
consolidated tax return for federal tax purposes or a consolidated or combined
return or report for state tax purposes. Except as set forth in Section 3.12 of
the IWL Disclosure Schedule, neither IWL nor any of its Subsidiaries is a party
to or bound by any tax indemnity, tax sharing or tax allocation agreement. There
are (and as of immediately following the Closing there will be) no liens on the
assets of IWL or any of its Subsidiaries relating to or attributable to Taxes,
except for liens for Taxes not yet due and payable or liens for Taxes being
contested by appropriate proceedings. Neither IWL nor any of its Subsidiaries
has any knowledge of any basis for the assertion of any claim which, if
adversely determined, would result in liens on the assets of IWL or
Subsidiaries. There is no contract, agreement, plan or arrangement, including
but not limited to the provisions of this Agreement, covering any employee or
former employee of IWL or any of its Subsidiaries that, individually or
collectively, could give rise to the payment of any amount that would not be
deductible pursuant to Sections 280G, 162 or 404 of the Code.
 
    (b)  NO PENALTY.  Neither IWL nor any of its Subsidiaries is subject to any
penalty by reason of a violation of any order, rule or regulation of, or a
default with respect to any IWL Return, report or declaration required to be
filed with, any Governmental Entity to which it is subject.
 
    3.13  RESTRICTIONS ON BUSINESS ACTIVITIES.  There is no agreement binding
upon, or judgment, injunction, order or decree entered against, IWL under which
IWL is prohibited from conducting or engaging in any line of business.
 
    3.14  TITLE OF PROPERTIES; ABSENCE OF LIENS AND ENCUMBRANCES; CONDITION OF
EQUIPMENT.
 
    (a)  IWL owns no real property other than as set forth in Section 3.14(a) of
the IWL Disclosure Schedule. Section 3.14(a) of the IWL Disclosure Schedule also
sets forth a true and complete list of all real property leased by IWL and the
aggregate annual rental or other fee payable under any such lease. All such
leases are in good standing, valid and effective in accordance with their
respective terms, and there is not with respect to IWL and, to the knowledge of
IWL, any other parties to such leases, under any of such leases any existing
default or event of default (or event which with notice or lapse of time, or
both, would constitute a default).
 
    (b)  Except as set forth in Section 3.14(b) of the IWL Disclosure Schedule,
IWL holds good and valid title to (or, in the case of leased properties, assets
and rights of way, valid leasehold interests in) all of its tangible properties,
assets and rights of way, real, personal and mixed, used in its business, free
and clear of any liens, charges, pledges, security interests or other
encumbrances.
 
    (c)  The Equipment used by IWL in the conduct of its business is listed in
Section 3.14(c) of the IWL Disclosure Schedule, except individual pieces of
equipment owned by IWL with an individual value of less than $5,000. The
Equipment is, taken as a whole, (i) adequate for the conduct of the business of
IWL as presently conducted, (ii) suitable for the uses to which it is currently
employed, (iii) in good operating
 
                                       39
<PAGE>
condition, (iv) regularly and properly maintained, ordinary wear and tear
excepted, and (v) not obsolete, dangerous or in need of renewal or replacement.
 
    3.15  INTELLECTUAL PROPERTY.
 
    (a)  IWL owns, or is licensed to use, all patents, trademarks, trade names,
service marks, copyrights, and any applications therefor, maskwork, schematics,
technology, know-how, computer software programs or applications and tangible or
intangible proprietary information or material (excluding IWL Commercial
Software Rights (as defined in Section 3.15(b) below)) that are used or
currently proposed by IWL to be used in the business of IWL as currently
conducted or as currently proposed to be conducted by IWL (the "IWL Intellectual
Property Rights"). Section 3.15(a) of the IWL Disclosure Schedule (i) sets forth
a complete list of all patents, patent applications, registered trademarks,
material unregistered copyrights, trade names and service marks, and any
applications therefor, included in IWL Intellectual Property Rights; (ii)
specifies the jurisdictions in which each such IWL Intellectual Property Right
has been issued or registered or in which an application for such issuance and
registration has been filed, including the respective registration or
application numbers and the names of all registered owners, together with a list
of all of IWL's currently marketed software products and list of names of all
registered owners, if any, of such software products that have been registered
for copyright protection with the United States Copyright Office and any foreign
offices and by whom such items have been registered and (iii) as to each such
IWL Intellectual Property Right, specifies whether it is owned by IWL or
licensed to IWL by another Person and, in the cases of any license, sets forth
the licensor and the term of such license. Section 3.15(a) of the IWL Disclosure
Schedule also sets forth a complete list of all licenses, sublicenses and other
agreements pursuant to which IWL has licensed any other Person to use any IWL
Intellectual Property Right or other trade secret material to IWL, and includes
the identity of such licenses; provided, however, that IWL's End-User Licenses
need not be listed. IWL is not, nor will it be as a result of the execution and
delivery of this Agreement or the performance of its obligations hereunder, in
violation of any license, sublicense or agreement described on such list. IWL is
the sole and exclusive owner of, with all right, title and interest in and to
(free and clear of any liens or encumbrances), those IWL Intellectual Property
Rights which IWL purports to own, and has sole and exclusive rights, and is not
contractually obligated to pay any compensation to any third party in respect
thereof to the use thereof or the material covered thereby in connection with
the services or products in respect of which such IWL Intellectual Property
Rights are being used. With respect to IWL Intellectual Property Rights licensed
to IWL, IWL has sufficient rights under the license agreements relating thereto
to enable IWL to use such IWL Intellectual Property Rights in its business as
currently conducted and as proposed to be conducted without payment of royalties
or other compensation to the licensor thereof. No claims with respect to IWL
Intellectual Property Rights have been asserted or, to the knowledge of IWL, are
threatened by any Person, (i) to the effect that the manufacture, sale,
licensing or use of any product as, now used, sold or licensed or proposed for
use, sale or license by IWL infringes on any copyright, patent, trade mark
service mark or trade secret, (ii) against the use by IWL of any trademarks,
trade names, trade secrets, copyrights, patents, technology, know-how or
computer software programs and applications used in IWL's business as currently
conducted or as proposed by IWL to be conducted, or (iii) challenging the
ownership, validity or effectiveness of any IWL Intellectual Property Rights.
Except as set forth in Section 3.15(a) of the IWL Disclosure Schedule, all
registered and material unregistered trademarks, service marks and copyrights
held by IWL are valid and subsisting. To the knowledge of IWL, there is no
material unauthorized use, infringement or misappropriation of any of IWL
Intellectual Property Rights by any third party, including any employee or
former employee of IWL. No IWL Intellectual Property Right owned exclusively by
IWL or product of IWL is subject to any outstanding order, judgment, decree,
stipulation or agreement restricting in any manner the licensing thereof by IWL.
There is no outstanding order, judgment, decree or stipulation on IWL, and IWL
is not party to any agreement, restricting in any manner the licensing of IWL's
products by IWL. Except for End User Licenses or as otherwise set forth in
Section 3.15(a) of the IWL Disclosure Schedule, IWL has not entered into any
agreement to indemnify any Person against any charge of infringement of any IWL
Intellectual Property Rights.
 
                                       40
<PAGE>
    (b)  "IWL Commercial Software Rights" means packaged commercially available
software programs generally available to the public through retail dealers in
computer software which have been licensed to IWL pursuant to End-User Licenses
and which are used in IWL's business but are in no way a component of or
incorporated in any of IWL's products and related trade markets, technology and
know-how. To the knowledge of IWL, IWL has not breached or violated the terms of
its license, sublicense or other agreement relating to any IWL Commercial
Software Rights and has a valid right to use such IWL Commercial Software Rights
under such license and agreements. No claims with respect to the IWL Commercial
Software Rights have been asserted or, to the knowledge of IWL, are threatened
by any Person against IWL. To the knowledge of IWL, there is no material
unauthorized use, infringement or misappropriation of any of the IWL Commercial
Software Rights by IWL or any employee or former employee of IWL during the
period of their employment.
 
    3.16  AGREEMENTS, CONTRACTS AND COMMITMENTS.  Other than those listed in
Section 3.16 of the IWL Disclosure Schedule, IWL does not have, is not a party
to nor is it bound by:
 
    (a)  any collective bargaining agreement;
 
    (b)  any agreements that contain any unpaid severance liabilities or
obligations;
 
    (c)  any bonus, deferred compensation, incentive compensation, option,
pension, profit-sharing or retirement plans, or any other employee benefit plans
or arrangements;
 
    (d)  any employment or consulting agreement, contract or commitment (other
than employment letters) with an employee or individual consultant or
salesperson or consulting or sales agreement, contract or commitment with a firm
or other organization, not terminable by IWL on thirty days notice without
liability;
 
    (e)  any stock option plan, stock appreciation right plan or stock purchase
plan;
 
    (f)  any insurance policy, fidelity or surety bond or completion bond not
listed in Section 3.21 of the IWL Disclosure Schedule;
 
    (g)  any lease of personal property having a value individually in excess of
$25,000;
 
    (h)  any agreement of indemnification or guaranty not entered into in the
ordinary course of business;
 
    (i)  any agreement, contract or commitment containing any covenant limiting
the freedom of IWL to engage in any line of business or compete with any Person;
 
    (j)  any agreement, contract or commitment relating to capital expenditures
and involving future obligations in excess of $25,000;
 
    (k)  any agreement, contract or commitment relating to the disposition or
acquisition of assets not in the ordinary course of business or any ownership
interest in any corporation, partnership, joint venture or other business
enterprise;
 
    (l)  any mortgages, indentures, loans or credit agreements, security
agreements or other agreements or instruments relating to the borrowing of money
or extension of credit, including guaranties referred to the clause (h) hereof;
 
    (m)  any purchase order or contract for the purchase of raw materials or
acquisition of assets involving $25,000 or more in any single instance or
$100,000 or more in the aggregate;
 
    (n)  any construction contracts involving $25,000 or more in any single
instance or $100,000 or more in the aggregate;
 
    (o)  any distribution, joint marketing or development agreements;
 
                                       41
<PAGE>
    (p)  any lease for switches or any other machinery, equipment or other
personal property involving payment of aggregate rentals in excess of $25,000;
 
    (q)  any contract pursuant to which IWL has access to the telephone network
of another Person other than IWL's internal commercial telephone service and any
contracts for the resale of any network capacity of IWL;
 
    (r)  any agreement, contract, lease or easement pursuant to which IWL has
the right of way to use any premises or real property to locate and/or install
fiber lines on, under or through such premises or real property;
 
    (s)  any agreement or commitment obligating IWL to deliver any product or
service at a price which does not cover the cost of (including labor, materials
and production overhead), plus a reasonable profit margin, for such product or
service;
 
    (t)  any joint venture, partnership or other cooperative arrangement or
agreement involving a sharing of profits or losses;
 
    (u)  any other agreement contract or commitment which involves $25,000 or
more and is not cancelable without penalty within thirty (30) days; or
 
    (v)  any agreement which is otherwise material to IWL's business.
 
    IWL has not breached, or received any claim or threat that it has breached,
any of the terms or conditions of any material agreement, contract or commitment
to which it is bound (including, but not limited to, those set forth in Section
3.16 or any other section of the IWL Disclosure Schedule) in such manner as
would permit any other party to cancel or terminate the same. Each agreement,
contract or commitment to which IWL is party and that is required to be set
forth in the IWL Disclosure Schedule is in full force and effect and, except as
otherwise disclosed, is not subject to any material default thereunder by any
party thereto. IWL is not bound by any material contract, agreement, license,
lease or other commitment, a copy of which has not been previously provided or
made available to the Company and the Partnership. IWL after making an inquiry
of all of its officers, directors, shareholders and appropriate employees does
not have any reason to expect that any change may occur in the relationships of
IWL with its suppliers or customers as a result of the Mergers or the Interest
Exchange, which change would be a Material Adverse Effect on IWL. No supplier of
or customer of IWL has indicated within the past year that it will stop, or
decrease the rate of supplying or purchasing materials, products, or services to
or from IWL, as a result of the Mergers or the Interest Exchange. Except as
described in Section 3.3, no consents, waivers or approvals under any of IWL's
material agreements, contracts, licenses or leases are necessary in order to
preserve the benefits thereunder for the Surviving Corporation or otherwise to
avoid any breach, default or right of termination or other right as a result of
the Mergers or the Interest Exchange.
 
    3.17  GOVERNMENTAL AUTHORIZATIONS.  Section 3.17 of the IWL Disclosure
Schedule accurately lists each federal, state, county, local or foreign
governmental consent, license, permit, grant, or other authorization issued to
IWL or statute, regulation, private treaty or agreement adopted or made for the
benefit for IWL or to which IWL is a party (a) pursuant to which IWL currently
operates or holds any interest in any of its properties or (b) which is required
for the operation of its business as currently conducted or the holding of any
such interest as currently held (herein collectively called the "IWL
Authorizations"). The IWL Authorizations are in full force and effect and
constitute all the authorizations required to permit IWL to operate or conduct
its business as currently conducted or hold any interest in its properties as
currently held.
 
    3.18  ACCOUNTS RECEIVABLE.  All accounts receivable shown in the IWL
Financial Statements arose in the ordinary course of business and, to the extent
not previously collected, are collectible (except to the extent reserved against
as reflected in the IWL Financial Statements) and are carried at values
determined in accordance with GAAP consistently applied. To the knowledge of
IWL, none of the accounts receivable
 
                                       42
<PAGE>
of IWL outstanding as of the date hereof is subject to any claim of offset,
recoupment, set off or counterclaim and there are no facts or circumstances
(whether asserted or unasserted) that would give rise to any such claim. No
accounts receivable are contingent upon the performance by IWL of any obligation
or contract except for IWL's maintenance obligations under its maintenance
agreements (although no customer has claimed that IWL has failed to perform its
maintenance obligations). No Person has any lien, charge, pledge, security
interest or other encumbrance on any of IWL's accounts receivable and no
agreement for deduction or discount has been made with respect to any of such
accounts receivable, except for liens granted to Bank One Texas, N.A. under
IWL's line of credit.
 
    3.19  MINUTE BOOKS AND STOCK RECORDS.  The minute books of IWL and its
Subsidiaries made available to counsel for the Company and the Partnership
contain minutes of all meetings of directors and shareholders (or consents in
lieu of such meetings) accurate in all material respects since the respective
times of incorporation of IWL and its Subsidiaries.
 
    3.20  LABOR MATTERS.  IWL is in compliance with all currently applicable
laws and regulations respecting employment, discrimination in employment, terms
and conditions of employment and wages and hours and employment practices, and
is not engaged in any unfair labor practice. IWL has not received any notice
from any Governmental Entity of, and to the knowledge of IWL there has not been
asserted before any Governmental Entity, any claim, action or proceeding to
which IWL is a party or involving IWL, and there is neither pending nor, to the
knowledge of IWL, threatened any investigation or hearing concerning IWL arising
out of or based upon any such laws, regulations or practices. There are no
pending claims against IWL under any workers compensation plan or policy or for
long term disability. IWL has complied in all material respects with all
applicable health care benefit continuation provisions of COBRA and has no
obligations with respect to any former employees or qualified beneficiaries
thereunder. Section 3.20 of the IWL Disclosure Schedule lists all current
employees of IWL and their current salary and vacation accruals.
 
    3.21  INSURANCE.  Section 3.21 of the IWL Disclosure Schedule lists all
insurance policies and fidelity bonds covering the assets, equipment,
properties, operations, software errors and omissions, employees, officers and
directors of IWL as well as all claims made under any insurance policy by IWL
since January 1, 1993 (other than claims under IWL's medical and dental
insurance plans and claims made with respect to insured losses which did not, in
the aggregate, have a Material Adverse Effect on IWL). There is no claim by IWL
pending under any of such policies or bonds as to which coverage has been
questioned, denied or disputed by the underwriters of such policies or bonds
(other than claims made under IWL's medical and dental insurance plans). IWL has
provided or made available to the Company and the Partnership copies of all such
insurance policies and fidelity bonds and all claims made by IWL under its
insurance policies (other than claims under IWL's medical and dental plans). All
premiums payable under all such policies and bonds have been paid and IWL is
otherwise in compliance in all material respects with the terms of such policies
and bonds (or other policies and bonds providing substantially similar insurance
coverage). Such policies of insurance and bonds are of the type and in amounts
customarily carried by Persons conducting businesses similar to those of IWL.
IWL does not know of any threatened termination of or proposed material premium
increase with respect to any of such policies. IWL has never been denied
insurance coverage nor has any insurance policy of IWL ever been canceled for
any reason.
 
    3.22  INVENTORY.  The inventory appearing on the IWL Financial Statements,
or thereafter acquired or produced, conforms in all material respects with IWL's
applicable specifications and warranties and have been produced in compliance
with IWL's quality control procedures and consist only of items of a quality and
quantity useable or saleable by IWL in the ordinary course of business. All such
inventory is merchantable and fit for the purpose for which it was procured or
manufactured, and none of which is obsolete, damaged or defective in any amount.
Such inventory is owned by IWL and is not subject to any liens, charges,
pledges, security interests or other encumbrances.
 
    3.23  COMPLIANCE WITH LAWS.
 
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<PAGE>
    (a)  IWL has complied in all material respects with, is not in violation of,
and has not received any notices of violation with respect to any federal, state
or local state, law or regulation with respect to the conduct of business or the
ownership or operation of its business, assets or properties. No charge,
complaint, action, suit, proceeding, hearing, known investigation, claim,
demand, or notice has been filed or commenced against IWL alleging any failure
to comply with any such law or regulation.
 
    (b)  IWL has not violated in any respect, or received a notice or charge
asserting any violation of the Sherman Act, the Clayton Act, the Robinson-Patman
Act, or the Federal Trade Commission Act, each as amended.
 
    (c)  IWL has not, and none of the officers, directors, shareholders or
employees of IWL have, on behalf of IWL:
 
        (i)  made or agreed to make any contribution, payment or gift funds or
    property to any governmental official, employee, or agent where either the
    contribution, payment, or gift or the purpose thereof was illegal under the
    laws of any federal, state or local jurisdiction; or
 
        (ii)  established or maintained any unrecorded fund or asset for any
    purpose, or intentionally made any false or inaccurate entries on any of its
    books and/or records; or
 
        (iii)  made or agreed to make any contribution, or reimbursed any
    political gift or contribution made by any other Person, to any candidate
    for federal, state or local public office; or
 
        (iv)  been involved in the disbursement or receipt of funds outside of
    the normal internal control systems of accountability or been involved in
    the improper or inaccurate recording of material payments, disbursements or
    receipts.
 
    3.24  FIRPTA.  IWL is not, and has not been at any time, a "United States
real property holding corporation" within the meaning of Section 897(c)(2) of
the Code.
 
    3.25  EMPLOYEE BENEFIT PLANS.
 
    (a)  Section 3.25 of the IWL Disclosure Schedule lists all employee benefit
plans (as defined in Section 3(3) of ERISA) and all bonus, stock option, stock
purchase, incentive, deferred compensation, supplemental retirement, severance
and other similar fringe or employee benefit plans, programs or arrangements,
and any current or former employment or executive compensation or severance
agreements, written or otherwise, for the benefit of, or relating to, any
employee of IWL, any trade or business (whether or not incorporated) which is a
member or which is under common control with IWL (an "IWL ERISA Affiliate")
within the meaning of Section 414 of the Code, or any Subsidiary of IWL
(together, the "IWL Employee Plans"), and a copy of each such IWL Employee Plan
has been provided or made available to the Company and the Partnership.
 
    (b)  (i) None of the IWL Employee Plans promises or provides retiree medical
or other retiree welfare benefits to any person except as required by applicable
law, including but not limited to COBRA; (ii) all IWL Employee Plans are in
compliance in all material respects with the requirements prescribed by any and
all applicable statutes (including ERISA and the Code), orders, or governmental
rules and regulations currently in effect with respect thereto (including all
applicable requirements for notification to participants or beneficiaries or the
Department of Labor, IRS or Secretary of the Treasury), and IWL has performed in
all material respects all obligations required to be performed by it under, is
not in default under or violation of, and has no knowledge of any default or
violation by any other party to, any of the IWL Employee Plans; (iii) each IWL
Employee Plan intended to qualify under Section 401(a) of the Code and each
trust intended to qualify under Section 501(a) of the Code either has received a
favorable determination letter with respect to each such IWL Employee Plan from
the IRS or still has a remaining period of time under applicable Treasury
Regulations or IRS pronouncements in which to apply for such a determination
letter and to make any amendments necessary to obtain a favorable determination;
and
 
                                       44
<PAGE>
(iv) no IWL Employee Plan is or within the prior six (6) years has been subject
to, and IWL has not incurred and does not expect to incur any liability under,
Title IV of ERISA or Section 412 of the Code.
 
    (c)  None of the following now exists or has existed within the six-year
period ending on the date hereof with respect to any IWL Employee Plan: (i) any
act or omission by IWL constituting a violation of Section 402 or 403 or, to the
knowledge of IWL, Section 404 or 405 of ERISA; (ii) to the knowledge of IWL, any
act or omission by IWL which constitutes a violation of Sections 406 and 407 of
ERISA and is not exempted by Section 408 of ERISA or which constitutes a
violation of Section 4975(c) of the Code and is not exempted by Section 4975(d)
of the Code; (iii) any act or omission by IWL constituting a violation of
Section 503 or 511 or, to the knowledge of IWL, Section 510 of ERISA; or (iv)
any act or omission by IWL which could give rise to liability under Section 502
of ERISA or under Sections 4979 or 4975 through 4980 of the Code or any other
provisions of ERISA or the Code.
 
    (d)  Each IWL Employee Plan has been maintained in substantial compliance
with its terms, and all contributions, premiums or other payments due from IWL
or any of its Subsidiaries to (or under) any such IWL Employee Plan have been
fully paid or adequately provided for on IWL Financial Statements for the most
recently ended fiscal year. All accruals thereon (including, where appropriate
proportional accruals for partial periods) have been made in accordance with
GAAP consistently applied on a reasonable basis. There has been no amendment,
written interpretation or announcement (whether or not written) by IWL with
respect to, or change in employee participation or coverage under, any IWL
Employee Plan that would increase materially the expense of maintaining such
plans or arrangements, individually or in the aggregate, above the level of
expense incurred with respect thereto for the most recently ended fiscal year.
 
    (e)  IWL has made available to the Company and the Partnership complete,
accurate and current copies of all IWL Employee Plans and all amendments,
documents, correspondence addressed to IWL and filings relating thereto,
including but not limited to any statements, filings, reports or returns filed
with any governmental agency with respect to the IWL Employee Plans at any time
within the three-year period ending on the date hereof.
 
    3.26  CERTAIN REGULATORY MATTERS.
 
    (a)  Except as disclosed in Section 3.26 of the IWL Disclosure Schedule and
except for billing disputes with customers arising in the ordinary course of
business that in the aggregate involve immaterial amounts, there are no
proceedings or, to IWL's knowledge, investigations pending or, to IWL's
knowledge, threatened before any domestic or foreign court, administrative,
governmental or regulatory body in which any of the following matters are being
considered which could reasonably be expected to have a Material Adverse Effect
on IWL, nor has IWL or any of its Subsidiaries received written notice or
inquiry from any such body, government official, advocacy or similar
organization or any private party indicating that any of such matters should be
considered or may become the object of consideration or investigation which
could reasonably be expected to have a Material Adverse Effect on IWL: (i)
reduction of rates charged to customers; (ii) reduction of earnings; (iii)
refunds of amounts previously charged to customers; (iv) failure to meet any
expense, infrastructure, service quality or other commitments previously made to
or imposed by any administrative, governmental or regulatory body; or (v)
increase in termination or access charges or other rates paid or payable by IWL
to its suppliers.
 
    (b)  Except as disclosed in Section 3.26 of the IWL Disclosure Schedule,
neither IWL nor any of its Subsidiaries has any outstanding commitments (and no
such obligations have been imposed upon IWL and remain outstanding) regarding
(i) reduction of rates charged to customers; (ii) reduction of earnings; (iii)
refunds of amounts previously charged to customers; or (iv) expenses,
infrastructure expenditures, service quality or other regulatory requirements to
or by any domestic or foreign court, administrative, governmental or regulatory
body, government official, consumer advocacy or similar organization, in each
case which could reasonably be expected to have a Material Adverse Effect on
IWL.
 
                                       45
<PAGE>
    (c)  IWL has not transferred, sold any interest in, or otherwise diluted its
control over any federal or state regulatory licenses, certificates, approvals
or other authorizations under which it operates, and the transfer of such
authorizations, subject to regulatory approval, would not violate the terms of
any agreement to which IWL is a party or by which is bound, or impinge the
rights of any third party.
 
    (d)  IWL has no current liability (and there is no basis for any present or
future charge, complaint, action, suit, proceeding, hearing, investigation,
claim, or demand against IWL giving rise to any liability) arising out of any
injury to persons or property as a result of the ownership, possession, or use
of any product manufactured, sold, leased, or delivered by IWL. Any such claims
would be fully covered to the extent of the dollar limitations of IWL's product
liability insurance. There are no recalls, threatened or pending, and no federal
investigative reports have been filed or were required to have been filed with
respect to any of IWL's products.
 
    3.27  ACCOUNTING MATTERS.  Neither IWL nor, to its knowledge, any of its
affiliates has through the date hereof taken or agreed to take any action that
would prevent the business combination to be effected by the Mergers and the
Interest Exchange from being accounted for as a "pooling of interests."
 
    3.28  INTERESTED PARTY TRANSACTIONS.  Except as set forth in Section 3.28 of
the IWL Disclosure Schedule, since June 30, 1994, no executive officer or
director of IWL (nor any parent, sibling, descendant or spouse of any of such
persons, or any trust, partnership, corporation or other entity in which any of
such persons has or has had an interest), has or has had, directly or
indirectly, (a) an interest in any entity which furnished or sold, or furnishes
or sells, services or products which IWL furnished or sells, or proposes to
furnish or sell, or (b) any interest in any entity which purchases from or sells
or furnishes to IWL any goods or services, or (c) a beneficial interest in any
contract or agreement required to be set forth in Section 3.16 of the IWL
Disclosure Schedule; provided, that ownership of no more than five percent (5%)
of the outstanding voting stock of a publicly traded corporation shall not be
deemed an "interest in any entity" for purposes of this Section 3.28.
 
    3.29  ENVIRONMENTAL AND OSHA.
 
    (a)  IWL has complied in all material respects with all Environmental Laws
and Employee Safety Laws, and no charge, action, suit, proceeding, hearing,
known investigation, claim, damage, or notice has been filed or commenced
against IWL alleging any failure to comply with any such law or regulation.
 
    (b)  IWL has no obligation to take remedial action with respect to any
conditions nor does IWL have any liability, and there is no basis related to
IWL's past or present operations, for any present charge, complaint, action,
suit, proceeding, hearing, investigation, claim, or demand giving rise to any
liability or obligation to take any remedial action under any Environmental Law.
 
    (c)  IWL has no liability relating to, and it has not handled or disposed of
any substance, arranged for the disposal of any substance, or owned or operated
any property or facility in violation of any Environmental Law.
 
    (d)  IWL has no liability for, and there is no basis for, any present or
future charge, complaint, action, suit, proceeding, hearing, investigation,
claim, or demand against IWL giving rise to any material liability under any
Employee Safety Laws.
 
    (e)  IWL has no liability relating to, and to the knowledge of IWL, IWL has
not exposed any of IWL's employees to any substances or conditions that could
form the basis for, any present charge, complaint, action, suit, proceeding,
hearing, investigation, claim, or demand (under the common law or pursuant to
statute) against IWL giving rise to material liability for any illness of or
personal injury to any employee.
 
    (f)  IWL has been in compliance with all the terms and conditions of all
permits, licenses, and other authorizations of Governmental Entities which are
required under any Environmental Law or Employee Safety Law.
 
                                       46
<PAGE>
    (g)  All properties and equipment used by IWL are free of asbestos, PCB's
and other Extremely Hazardous Substances (as defined in Section 302A of the
Emergency Planning and Community Right-to-Know Act of 1986, as amended). To the
knowledge of IWL, no pollutant, contaminant, chemical, or industrial, hazardous,
or toxic material or waste has been buried, stored, spilled, leaked, discharged,
emitted, or released on any real property that IWL has ever owned, or that IWL
now leases or has ever leased.
 
    3.30  REPRESENTATIONS COMPLETE.  None of the representations or warranties
made by IWL in this Agreement, nor any statement made in any Schedule, Exhibit
or certificate furnished by IWL pursuant to this Agreement, when read in their
entirety, contains or will contain any untrue statement of a material fact at
the Effective Time, or omits or will omit to state any material fact necessary
in order to make the statements contained herein or therein, in the light of the
circumstances under which made, not misleading. No warranty or representation
shall be deemed to have been made by IWL except for the warranties and
representations set forth in this Agreement and the Exhibits, Schedules and
certificates delivered pursuant hereto.
 
    3.31  REPRESENTATIONS AND WARRANTIES WITH RESPECT TO ICEL.  IWL hereby makes
for the benefit of the Company and the Partnership all of the representations
and warranties made by NERA Limited, Thomas Norman Blair and Margery Helen Blair
to IWL under the ICEL Stock Purchase Agreement (as defined below), which relates
to the acquisition by IWL of all of the stock of Integrated Communications and
Engineering Limited, a limited company incorporated in Scotland ("ICEL"),
including without limitation those set forth in Schedule 2 and Section 5 of the
ICEL Stock Purchase Agreement, but subject to the same limitations (including
limitations on liability), exclusions and exceptions as set forth in the ICEL
Stock Purchase Agreement; and IWL further represents and warrants that each of
such representations and warranties, as subject to such limitations, are true,
complete and correct in all material respects as of the date hereof.
Notwithstanding anything to the contrary contained in this Agreement, the
representations and warranties set forth in this Section 3.31 shall be subject
to the provisions relating to survivability of representations and warranties
set forth in Section 8.1 hereof. Notwithstanding anything to the contrary
contained herein, except for those instances in which express reference is made
to ICEL, none of the representations and warranties contained in Sections 3.1
through 3.30 shall be deemed made with respect to ICEL, and no warranty or
representation shall be deemed to have been made by IWL or the Merger
Subsidiaries herein with respect to ICEL except for the warranties and
representations set forth in this Section 3.31.
 
                                   ARTICLE IV
                      CONDUCT PRIOR TO THE EFFECTIVE TIME
 
    4.1  CONDUCT OF BUSINESS OF THE COMPANY AND THE PARTNERSHIP.  During the
period from the date of this Agreement and continuing until the earlier of the
termination of this Agreement or the Effective Time, each of the Company and the
Partnership agrees (except to the extent that IWL shall otherwise consent in
writing), to carry on its business in the usual regular and ordinary course in
substantially the same manner as heretofore conducted and, to the extent
consistent with such business, use all commercially reasonable efforts
consistent with past practice and policies to preserve intact the Company's and
the Partnership's respective present business organizations, keep available the
services of its present officers and respective key employees, and preserve
their respective relationships with customers, suppliers, distributors,
licensors, licensees and others having business dealings with it. The Company
and the Partnership shall promptly notify IWL of any event or occurrence not in
the ordinary course of business of the Company and the Partnership which could
have a Material Adverse Effect on the Company and the Partnership, respectively.
Except as expressly contemplated by this Agreement or as set forth in Section
4.1 of the Company and Partnership Disclosure Schedule, the Company and the
Partnership shall not, without the prior written consent of IWL (which consent
shall not require the approval of the Board of Directors of IWL):
 
                                       47
<PAGE>
    (a)  Enter into any commitment or transaction involving more than $500,000
of products and services of the Company and the Partnership;
 
    (b)  Grant any severance or termination pay in excess of $10,000 (i) to any
director or (ii) to any employees, except payments made pursuant to written
agreements outstanding on the date hereof;
 
    (c)  Except for End-User Licenses, transfer to any Person any rights to the
Company Intellectual Property Rights or the Partnership Intellectual Property
Rights;
 
    (d)  Enter into or amend any agreements pursuant to which any other party is
granted exclusive marketing or other rights of any type or scope with respect to
any products of the Company or the Partnership, or the Company or the
Partnership terminates or assigns any such agreement;
 
    (e)  Violate, amend or otherwise modify the terms of any of the contracts or
agreements required to be set forth in the Company or the Partnership Disclosure
Schedule except in the ordinary course of business;
 
    (f)  Commence any litigation except for normal collection actions;
 
    (g)  Declare or pay any dividends on or make any other distributions
(whether in cash, stock or property) in respect of any of the Company's capital
stock, or split, combine or reclassify any of the Company's capital stock or
issue or authorize the issuance of any other securities in respect of, in lieu
of or in substitution for shares of capital stock of the Company, or repurchase
or otherwise acquire, directly or indirectly, any shares of its capital stock;
 
    (h)  Issue, deliver, sell, grant (whether or not there are shares available
for grant under any stock option plans) or authorize or propose the issuance,
delivery or sale of, or purchase or propose the purchase of, any shares of the
Company's capital stock or securities convertible into, or subscriptions,
rights, warrants or options to acquire, or other agreements or commitments of
any character obligating it to issue any such shares or other convertible
securities, except for the issuance of shares pursuant to the exercise of
employee stock options granted prior to the date hereof;
 
    (i)  Except as provided in the Articles of Merger, cause or permit any
amendments to the Company's Articles of Incorporation or Bylaws or the
Partnership's Agreement of Limited Partnership;
 
    (j)  Acquire or agree to acquire by merging or consolidating with, or by
purchasing a substantial portion of the assets of, or by any other manner, any
business or any corporation, partnership, association or other business
organization or division thereof, or otherwise acquire or agree to acquire any
assets which are material, individually or in the aggregate, to the business of
the Company or the Partnership;
 
    (k)  Sell, lease, license or otherwise dispose of any of its properties or
assets which are material individually or in the aggregate, to the business of
the Company or the Partnership, except in the ordinary course of business;
 
    (l)  Incur any indebtedness for borrowed money or guarantee any such
indebtedness or issue or sell any debt securities of the Company or the
Partnership or guarantee any debt securities of others in excess of $10,000,
except pursuant to existing bank credit facilities or lines of credit;
 
    (m)  Adopt or amend any employee benefit or option plan, grant any
additional options to acquire shares of capital stock of the Company or any
Subsidiary under any employee benefit or option plans (whether or not the
issuance of such options is authorized by such plans), or enter into any
employment contract, pay any special bonus or special remuneration to any
director or employee, or increase the salaries or wage rates of its employees
other than raises in compensation payable to employees that are granted on their
respective anniversary dates and are consistent with the Company's or the
Partnership's, as the case may be, past practice;
 
                                       48
<PAGE>
    (n)  Revalue any of its assets, including without limitation writing down
the value of inventory or writing off notes or accounts receivable other than in
the ordinary course of business;
 
    (o)  Pay, discharge or satisfy in an amount in excess of $25,000 in any one
case (or $100,000 in the aggregate) any claim, liability or obligation
(absolute, accrued, asserted or unasserted, contingent or otherwise), other than
the payment, discharge or satisfaction in the ordinary course of business of
liabilities reflected or reserved against the Company Financial Statements or
the Partnership Financial Statements;
 
    (p)  Make or change any material election in respect of Taxes, adopt or
change any accounting method in respect of Taxes, enter into any closing
agreement, settle any claim or assessment in respect of Taxes, or consent to any
extension or waiver of the limitation period applicable to any claim or
assessment in respect of Taxes;
 
    (q)  Take any action which the Company or the Partnership, as the case may
be, knows or should know would jeopardize the ability of the parties hereto to
account for the Mergers and the Interest Exchange as a pooling of interests; or
 
    (r)  Take, or agree in writing or otherwise to take, any of the actions
described in Sections 4.1(a) through (q) above, or any action which would make
any of the representations or warranties or covenants of the Company or the
Partnership contained in this Agreement materially untrue or incorrect.
 
    4.2  NO SOLICITATION.  Prior to the Effective Time, the Company and the
Partnership will not (and will not permit any of the Company's officers,
directors, shareholders affiliated with any officer or director or the Company's
agents, representatives or affiliates to) directly or indirectly, take any of
the following actions with any party other than IWL and its designees:
 
    (a)  Solicit, encourage, initiate, accept or participate in any negotiations
or discussions with respect to, any offer or proposal to acquire all or
substantially all of the Company's or the Partnership's business and properties,
or capital stock or Partnership Interests, as the case may be, whether by
merger, purchase of assets, tender offer or otherwise, or agree to any such
offer or proposal,
 
    (b)  Except for disclosures made to financial institutions and others in the
ordinary course of business, disclose any information not customarily disclosed
to any Person other than its attorneys or financial advisors concerning the
Company's or the Partnership's business and properties or afford to any Person
or entity access to its properties, books or records, or
 
    (c)  Assist or cooperate with any Person to make any proposal to purchase
all or any part of the Company's capital stock or assets or agree to any such
proposal, other than selling its products and licensing of software in the
ordinary course of business.
 
    4.3  CONDUCT OF BUSINESS OF IWL.  During the period from the date of this
Agreement and continuing until the earlier of the termination of this Agreement
or the Effective Time, IWL agrees (except to the extent that the Company and the
Partnership shall otherwise consent in writing), to carry on its business in the
usual regular and ordinary course in substantially the same manner as heretofore
conducted and, to the extent consistent with such business, use all commercially
reasonable efforts consistent with past practice and policies to preserve intact
IWL's present business organizations, keep available the services of its present
officers and key employees and preserve their relationships with customers,
suppliers, distributors, licensors, licensees and others having business
dealings with it. IWL shall promptly notify the Company and the Partnership of
any event or occurrence not in the ordinary course of business of IWL which
could have a Material Adverse Effect on IWL. Except as expressly contemplated by
this Agreement or as set forth in Section 4.3 of the IWL Disclosure Schedule,
IWL shall not, without the prior written consent of the Company and the
Partnership (which consent shall not require the approval of the Board of
Directors of the Company or the General Partner):
 
    (a)  Enter into any commitment or transaction involving more than $500,000
of products and services of IWL;
 
                                       49
<PAGE>
    (b)  Grant any severance or termination pay in excess of $10,000 (i) to any
director or (ii) to any employee, except payments made pursuant to written
agreements outstanding on the date hereof;
 
    (c)  Except for End-User Licenses, transfer to any Person any rights to the
IWL Intellectual Property Rights;
 
    (d)  Enter into or amend any agreements pursuant to which any other party is
granted exclusive marketing or other rights of any type or scope with respect to
any products of IWL, or IWL terminates or assigns any such agreement;
 
    (e)  Violate, amend or otherwise modify the terms of any of the contracts or
agreements required to be set forth in the IWL Disclosure Schedule except in the
ordinary course of business;
 
    (f)  Commence any litigation except for normal collection actions, other
than litigation with IEX Corporation or CLG, Inc. arising out of or resulting
from the dispute described in Section 3.9 of the IWL Disclosure Schedule;
 
    (g)  Declare or pay any dividends on or make any other distributions
(whether in cash, stock or property) in respect of any of its capital stock, or
split, combine or reclassify any of its capital stock or issue or authorize the
issuance of any other securities in respect of, in lieu or in substitution for
shares of capital stock of IWL, or repurchase or otherwise acquire, directly or
indirectly, any shares of its capital stock.
 
    (h)  Issue, deliver, sell, grant (whether or not there are shares available
for grant under any stock option plans) or authorize or propose the issuance,
delivery or sale of, or purchase or propose the purchase of, any shares of its
capital stock or securities convertible into, or subscriptions, rights, warrants
or options to acquire, or other agreements or commitments of any character
obligating it to issue any such shares or other convertible securities, except
for the issuance of shares pursuant to the exercise of employee stock options
granted prior to the date hereof;
 
    (i)  Except as provided in the Articles of Merger, cause or permit any
amendments to its Articles of Incorporation or Bylaws;
 
    (j)  Acquire or agree to acquire by merging or consolidating with, or by
purchasing a substantial portion of the assets of, or by any other manner, any
business or any corporation, partnership, association or other business
organization or division thereof, or otherwise acquire or agree to acquire any
assets which are material, individually or in the aggregate, to the business of
IWL;
 
    (k)  Sell, lease, license or otherwise dispose of any of its properties or
assets which are material individually or in the aggregate, to the business of
IWL, except in the ordinary course of business;
 
    (l)  Incur any indebtedness for borrowed money or guarantee any such
indebtedness or issue or sell any debt securities of IWL or guarantee any debt
securities of others in excess of $10,000, except pursuant to existing bank
credit facilities, existing lines of credit or other existing agreements
referred to in Section 3.16 of the IWL Disclosure Schedule;
 
    (m)  Adopt or amend any employee benefit or option plan, grant any
additional options to acquire shares of capital stock of IWL or any Subsidiary
under any employee benefit or option plans (whether or not the issuance of such
options is authorized by such plans), or enter into any employment contract, pay
any special bonus or special remuneration to any director or employee, or
increase the salaries or wage rates of its employees other than raises in
compensation payable to employees that are granted on their respective
anniversary dates and are consistent with IWL's past practice;
 
    (n)  Revalue any of its assets, including without limitation writing down
the value of inventory or writing off notes or accounts receivable other than in
the ordinary course of business;
 
    (o)  Pay, discharge or satisfy in an amount in excess of $25,000 in any one
case (or $100,000 in the aggregate) any claim, liability or obligation
(absolute, accrued, asserted or unasserted, contingent or
 
                                       50
<PAGE>
otherwise), other than the payment, discharge or satisfaction in the ordinary
course of business of liabilities reflected or reserved against in the IWL
Financial Statements;
 
    (p)  Make or change any material election in respect of Taxes, adopt or
change any accounting method in respect of Taxes, enter into any closing
agreement, settle any claim or assessment in respect of Taxes, or consent to any
extension or waiver of the limitation period applicable to any claim or
assessment in respect of Taxes;
 
    (q)  Take any action which IWL knows or should know would jeopardize the
ability of the parties hereto to account for the Mergers or the Interest
Exchange as a pooling of interests; or
 
    (r)  Take, or agree in writing or otherwise to take, any of the actions
described in Sections 4.3(a) through (q) above, or any action which would make
any of the representations or warranties or covenants of IWL contained in this
Agreement materially untrue or incorrect.
 
    4.4  CONTROL OF OTHER PARTY'S BUSINESS; TRANSITION PLANNING.  Nothing
contained in this Agreement shall give IWL, directly or indirectly, the right to
control or direct the Company's or the Partnership's operations prior to the
Effective Time. Nothing contained in this Agreement shall give the Company or
the Partnership, directly or indirectly, the right to control or direct IWL's
operations prior to the Effective Time. Prior to the Effective Time, each of the
Company, the Partnership, and IWL shall exercise, consistent with the terms and
conditions of this Agreement, complete control and supervision over its
respective operations. Subject to the foregoing, Ignatius W. Leonards, as Chief
Executive Officer of IWL, and Jere W. Thompson, Jr., as President of the
Company, jointly shall be responsible for coordinating all aspects of transition
planning and implementation relating to the Mergers and the Interest Exchange
and the other transactions contemplated hereby. If either such person ceases to
be chief executive officer of his company for any reason, such person's
successor shall assume his predecessor's responsibilities under this Section
4.4. During the period between the date of this Agreement and the Effective
Time, Messrs. Leonards and Thompson jointly shall (i) examine various
alternatives regarding the manner in which to best organize and manage the
businesses of IWL, the Partnership and the Company after the Effective Time and
(ii) coordinate policies and strategies with respect to regulatory authorities
and bodies, in all cases subject to applicable and regulation.
 
                                   ARTICLE V
                             ADDITIONAL AGREEMENTS
 
    5.1  JOINT PROXY STATEMENT AND THE REGISTRATION STATEMENT.
 
    (a)  Holdings shall register the issuance of the shares of Holdings Common
Stock to be issued in the Mergers and the Interest Exchange under the Securities
Act and any blue sky law under which registration or a qualification is
required. In connection therewith, as promptly as practicable after the
execution and delivery of this Agreement, the parties hereto shall prepare and
file with the SEC the Registration Statement, which (i) shall be a Registration
Statement on Form S-4, (ii) shall register the issuance of the shares of
Holdings Common Stock to be issued in the Mergers and the Interest Exchange, and
(iii) shall contain a joint proxy statement/prospectus for IWL, the Company and
the Partnership. The parties shall use commercially reasonable efforts to have
the Registration Statement declared effective by the SEC. Upon the SEC declaring
the Registration Statement effective, IWL, the Company and the Partnership shall
mail to the holders of record of shares of IWL Common Stock, Company Common
Stock and Partnership Interests, the Joint Proxy Statement/Prospectus, provided,
however, that IWL, the Partnership and the Company shall not mail or otherwise
furnish the Joint Proxy Statement/Prospectus to their respective shareholders or
to the Partners unless and until:
 
        (i)  IWL shall have received (and included as an exhibit or appendix to
    the Joint Proxy Statement/Prospectus) a letter from Cruttenden Roth
    Incorporated, dated as of, or within two
 
                                       51
<PAGE>
    business days preceding, the date of the first mailing of the Joint Proxy
    Statement, to the effect set forth in Section 3.7 hereof;
 
        (ii)  IWL shall have received a letter of KPMG Peat Marwick, LLP, dated
    a date within two business days prior to the date of the first mailing of
    the Joint Proxy Statement, and addressed to IWL, in form and substance
    reasonably satisfactory to IWL and customary in scope and substance for
    "cold comfort" letters delivered by independent public accountants in
    connection with registration statements on Form S-4 with respect to the
    financial statements of the Company and the Partnership included in the
    Joint Proxy Statement and the Registration Statement;
 
        (iii)  the Company and the Partnership shall have received a letter of
    KPMG Peat Marwick, LLP, dated a date within two business days prior to the
    date of the first mailing of the Joint Proxy Statement, and addressed to the
    Company and the Partnership, in form and substance reasonably satisfactory
    to the Company and the Partnership and customary in scope and substance for
    "cold comfort" letters delivered by independent public accountants in
    connection with registration statements on Form S-4 with respect to the
    financial statements of IWL included in the Joint Proxy Statement and the
    Registration Statement;
 
        (iv)  each of the IWL Shareholders Agreement and the Owners Agreement
    shall have been fully executed and delivered by all signatories thereto;
 
        (v)  each of Ignatius W. Leonards, Byron M. Allen, Jere W. Thompson,
    Sr., Jere W. Thompson, Jr., Mark Langdale, Tim Rogers, Tim Terrell and Scott
    Roberts shall have executed and delivered to Holdings a lock-up agreement in
    form and substance reasonably satisfactory to Holdings (provided that the
    lock-up period shall expire on or prior to the date that Holdings publicly
    announces financial results covering at least 30 days of combined operations
    of IWL, the Partnership and the Company); and
 
        (vi)  such Joint Proxy Statement/Prospectus shall include audited
    financial statements (balance sheets, income statements and statements of
    cash flows) for the Company and the Partnership as of and for the fiscal
    years ended December 31, 1997, 1996 and 1995 (which shall have been audited
    by KPMG Peat Marwick, LLP).
 
    (b)  The parties hereto will use their respective best efforts to cause the
letters referred to in clauses (ii) and (iii) above to be delivered and will
cooperate in the preparation of the Joint Proxy Statement and the Registration
Statement and in having the Registration Statement declared effective as soon as
practicable.
 
    5.2  IWL AND COMPANY SHAREHOLDERS' MEETINGS, PARTNERS' MEETING, AND
CONSUMMATION OF THE MERGERS AND THE INTEREST EXCHANGE.
 
    (a)  At the earliest reasonably practicable time following the execution and
delivery of this Agreement, each of IWL and the Company shall promptly take all
action necessary in accordance with the TBCA and its Articles of Incorporation
and Bylaws to convene a meeting of their respective shareholders (each, a
"Shareholders Meeting"). Each of IWL and the Company shall use all commercially
reasonable efforts to solicit from its respective shareholders proxies to be
voted at its Shareholders Meeting in favor of this Agreement pursuant to the
Joint Proxy Statement and each of IWL and the Company shall include in the Joint
Proxy Statement the recommendation of its Board of Directors in favor of this
Agreement and the Mergers. Each of the parties hereto shall take all other
action necessary or, in the opinion of the other parties, reasonably advisable
to promptly and expeditiously secure any vote or consent of shareholders
required by the TBCA and such party's Articles of Incorporation and Bylaws to
effect the Mergers. At the earliest reasonably practicable time following the
execution and delivery of this Agreement, the Partnership shall promptly take
all action necessary in accordance with the Texas Revised Limited Partnership
Act ("TRLPA") and its Agreement of Limited Partnership to convene a meeting of
the Partners. The
 
                                       52
<PAGE>
Partnership shall use all commercially reasonable efforts to solicit from its
Partners proxies to be voted at such meeting in favor of this Agreement and the
Interest Exchange pursuant to the Joint Proxy Statement.
 
    (b)  Upon the terms and subject to the conditions hereof and as soon as
practicable after the conditions set forth in Article VI hereof have been
fulfilled or waived, each of the parties shall execute in the manner required by
the TBCA and TRLPA and deliver to and file with the Secretary of State of the
State of Texas, such instruments and agreements as may be required by the TBCA
and TRLPA, and the parties shall take all such other and further actions as may
be required by law to make the Mergers and the Interest Exchange effective.
 
    5.3  ACCESS TO INFORMATION.  Each of the parties hereto shall afford the
other parties and their respective accountants, counsel and other
representatives, reasonable access during normal business hours during the
period prior to the Effective Time to (a) all of its properties, books,
contracts, commitments and records, and (b) all other information concerning the
business, properties and personnel of such party as may be reasonably requested.
IWL, the Partnership and the Company agree to provide to the other parties'
respective accountants, counsel and other representatives copies of internal
financial statements promptly upon reasonable request. No information or
knowledge obtained in any investigation pursuant to this Section 5.3 shall
affect or be deemed to modify any representation or warranty contained herein or
the conditions to the obligations of the parties to consummate the Mergers and
the Interest Exchange.
 
    5.4  CONFIDENTIALITY.  From the date hereof to and including the Effective
Time, the parties hereto shall maintain, and cause their directors, officers,
employees, agents and advisors to maintain, in confidence and not disclose or
use for any purpose, except the evaluation of the transactions contemplated
hereby and the accuracy of the respective representations and warranties of the
parties hereto contained herein, information concerning the other parties hereto
and obtained directly or indirectly from such parties, or their directors,
officers, employees, agents or advisors, except such information as is or
becomes (a) available to the non-disclosing party from third parties not subject
to an undertaking of confidentiality or secrecy; (b) generally available to the
public other than as a result of a breach by the non-disclosing party hereunder;
or (c) required to be disclosed under applicable law; and except such
information as was in the possession of such party prior to obtaining such
information from such other party as to which the fact of prior possession such
possessing party shall have the burden of proof. Each of IWL, the Company and
the Partnership agrees that all information so received from the other party
shall be deemed received pursuant to the confidentiality agreement, dated
December 2, 1997, heretofore executed and delivered by IWL and the Company (the
"Confidentiality Agreement") and such party shall, and shall cause its
Subsidiaries and each of its and their respective officers, directors,
employees, financial advisors and agents, to comply with the provisions of the
Confidentiality Agreement with respect to such information and the provisions of
the Confidentiality Agreement are hereby incorporated herein by reference with
the same effect as if fully set forth herein. In the event that the transactions
contemplated hereby shall not be consummated, all such information which shall
be in writing shall be returned to the party furnishing the same, including to
the extent reasonably practicable, copies or reproductions thereof which may
have been prepared.
 
    5.5  EXPENSES.  Subject to Section 5.12, whether or not the Mergers and the
Interest Exchange are consummated, all expenses incurred in connection with this
Agreement shall be the obligation of the party incurring such expenses, except
that expenses incurred in connection with the printing of the Joint Proxy
Statement and the Registration Statement shall be shared equally by IWL and the
Company.
 
    5.6  PUBLIC DISCLOSURE.  Unless otherwise required by law or the
requirements of the Nasdaq National Market, prior to the Effective Time, no
disclosure (whether or not in response to an inquiry) of the subject matter of
this Agreement shall be made by any party hereto unless approved by IWL, the
Company and the Partnership prior to release, provided that such approval shall
not be unreasonably withheld. Notwithstanding the above, the IWL may make such
public disclosures without the consent of
 
                                       53
<PAGE>
the Company to the extent reasonably necessary to comply with IWL's securities
laws disclosure requirements, as determined by IWL.
 
    5.7  FILINGS; OTHER ACTION.  Subject to the terms and conditions herein
provided, as promptly as practicable after the date hereof, IWL, the Company and
the Partnership shall (a) use all commercially reasonable efforts to cooperate
with each other in (i) determining which filings are required to be made prior
to the Closing Date with, and which material consents, approvals, permits, or
authorizations are required to be obtained prior to the Closing Date from,
governmental or regulatory authorities of the United States, the several states
or the District of Columbia, the Commonwealth of Puerto Rico, and foreign
jurisdictions in connection with the execution and delivery of this Agreement
and the consummation of the transactions contemplated hereby and (ii) timely
making all such filings and timely seeking all such consents, approvals,
permits, or authorizations, including without limitation all applicable state
regulatory approvals, and (b) use all commercially reasonable efforts to take,
or cause to be taken, all other actions and do, or cause to be done, all other
things necessary or appropriate to consummate the transactions contemplated by
this Agreement, as soon as practicable. The parties acknowledge that certain
actions may be necessary with respect to the foregoing in making notifications
and obtaining clearances, consents, approvals, waivers, or similar third party
actions that are material to the consummation of the transactions contemplated
hereby, and each party agrees to take all commercially reasonable actions as are
necessary to complete such notifications and obtain such clearances, approvals,
waivers, or third party actions except where such consequence, event, or
occurrence would not have a Material Adverse Effect on IWL, the Company or the
Partnership, as the case may be.
 
    5.8  AFFILIATE AGREEMENT.  Each of the Company and IWL shareholders and each
of the Partners designated by Holdings as an "Affiliated Shareholder " (the
"Affiliated Shareholders") agrees to execute, on or prior to the Effective Time,
an Affiliate Agreement with respect to Rule 145 under the Securities Act in the
form agreed upon by the parties hereto. Holdings shall be entitled to place on
the certificates evidencing any Holdings Common Stock to be received by any
Affiliated Shareholder pursuant to the terms of this Agreement the legends set
forth in the Affiliate Agreement, and to issue appropriate stop transfer
instructions to the transfer agent for Holdings Common Stock, consistent with
the terms of such Affiliate Agreement.
 
    5.9  COMPLIANCE.
 
    (a)  In consummating the Mergers, the Interest Exchange and the other
transactions contemplated hereby, the Company and the Partnership shall comply
in all material respects with the provisions of the Exchange Act and the
Securities Act and shall comply, and/or cause its Subsidiaries to comply or to
be in compliance, in all material respects, with all other applicable laws.
 
    (b)  In consummating the Mergers, the Interest Exchange and the other
transactions contemplated hereby, IWL shall comply in all material respects with
the provisions of the Exchange Act and the Securities Act and shall comply,
and/or cause its Subsidiaries (including the Merger Subsidiaries) to comply or
to be in compliance, in all material respects, with all other applicable laws.
 
    5.10  BLUE SKY LAWS.  Holdings shall take such steps as may be necessary to
comply with the federal securities laws and with the securities and blue sky
laws of all other jurisdictions which are applicable to the issuance of Holdings
Common Stock pursuant hereto (such determination shall be made based on the
shareholder and optionee addresses furnished to Holdings by IWL and the
Company). IWL, the Company and the Partnership shall use commercially reasonable
efforts to assist Holdings as may be necessary to comply with the federal
securities laws and with the securities and blue sky laws of all other
jurisdictions which are applicable in connection with the issuance of Holdings
Common Stock pursuant hereto.
 
    5.11  BEST EFFORTS, ADDITIONAL DOCUMENTS AND FURTHER ASSURANCES.  Each of
the parties to this Agreement shall use commercially reasonable efforts to
effectuate the transactions contemplated hereby and to fulfill and cause to be
fulfilled the conditions to closing under this Agreement. Each party hereto, at
the
 
                                       54
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request of another party hereto, shall execute and deliver such other
instruments and do and perform such other acts and things as may be reasonably
necessary or desirable for effecting completely the consummation of this
Agreement and the transactions contemplated hereby.
 
    5.12  EMPLOYMENT AGREEMENTS.  On or prior to the date hereof, each of
Ignatius W. Leonards, Byron M. Allen, Errol Olivier, Richard H. Roberson and
Bryan Olivier, who are currently IWL employees, and Jere W. Thompson, Jr., Scott
Roberts, Tim Rogers and Tim Terrell, who are currently Company employees, shall
enter into an employment agreement (which shall include covenants not to
compete) in substantially the form attached hereto as Exhibit 5.12 with Holdings
(the "Employment Agreements"). None of such employees shall have any right,
remedy or cause of action under this Section 5.12, nor shall they be third party
beneficiaries of this Section 5.12. Prior to the Effective Time, the Company
shall bear and be responsible for the performance of all of Holdings'
obligations under the Employment Agreements with the Company employees and IWL
shall bear and be responsible for the performance of all of Holdings'
obligations under the Employment Agreements with the IWL employees, in each case
including without limitation obligations to pay base compensation and bonus (if
any), tax withholding and payment obligations (including with respect to FICA,
Medicare and all other similar taxes) and employee expense reimbursement
obligations. Prior to the Effective Time, each of IWL and the Company shall
reimburse the other for any expenses incurred by the other that were the
responsibility hereunder of IWL or the Company, as the case may be.
 
    5.13  POOLING ACCOUNTING.  IWL, the Partnership and the Company shall each
use commercially reasonable efforts to cause the business combination to be
effected by the Mergers and the Interest Exchange to be accounted for as a
pooling of interests. Each of IWL, the Partnership and the Company shall use
commercially reasonable efforts to cause its "affiliates" (within the meaning of
Rule 145 promulgated under the Securities Act) not to take any action that would
adversely affect the ability of the parties hereto to account for the business
combination to be effected by the Mergers and the Interest Exchange as a pooling
of interests. The Affiliate Agreements to be entered into by the Affiliated
Shareholders shall require the Affiliated Shareholders not to sell, exchange,
transfer, pledge, dispose of, offer for sale or grant an option to purchase any
shares of the Holdings Common Stock during the period which begins on the date
hereof and ends on the third day after Holdings publicly announces financial
results covering at least 30 days of combined operations of IWL, the Partnership
and the Company.
 
    5.14  NASDAQ LISTING.  Holdings agrees to use its best efforts to authorize
for listing on the Nasdaq National Market the shares of Holdings Common Stock
issuable, and those required to be reserved for issuance, in connection with the
Mergers and the Interest Exchange, upon official notice of issuance.
 
    5.15  POST-MERGER BOARD OF DIRECTORS AND OFFICERS OF HOLDINGS.  Following
the Effective Time, Holdings shall use commercially reasonable efforts to (a)
cause the Board of Directors of Holdings to consist of Ignatius W. Leonards,
Byron M. Allen, Jere W. Thompson, Jr., Mark Langdale, Tim Rogers, one outside
director designated by IWL and one outside director designated by the Company
(provided that IWL and the Company shall each have the right to veto the other's
designee) and (b) cause the officers of Holdings to consist of Jere W. Thompson,
Jr., Chief Executive Officer, Ignatius W. Leonards, President, Byron M. Allen,
Executive Vice President, and Richard H. Roberson, Controller, Treasurer and
Secretary. Holdings shall take all action necessary to amend its Articles of
Incorporation as of the Effective Time to change its name to "CapRock
Communications Corp." or such other name as may be agreed upon by the parties.
 
    5.16  NO REGISTRATION RIGHTS.  Holdings shall not be required to amend or
maintain the effectiveness of the Registration Statement for any purposes,
including without limitation for the purpose of permitting resale of the shares
of Holdings Common Stock received pursuant hereto by the Persons who may be
deemed to be "affiliates" of Holdings, IWL, the Company or the Partnership
within the meaning of Rule 145 promulgated under the Securities Act.
 
    5.17  NOTIFICATION OF CERTAIN MATTERS.  Each of IWL, the Partnership and the
Company shall give prompt notice to the other of the following:
 
                                       55
<PAGE>
    (a)  the occurrence or nonoccurrence of any event whose occurrence or
nonoccurrence would be likely to cause either (i) any representation or warranty
of such party contained in this Agreement to be untrue or inaccurate in any
material respect at any time from the date hereof to the Effective Time, or (ii)
directly or indirectly, any Material Adverse Effect with respect to such party;
 
    (b)  any material failure of such party, or any officer, director, employee
or agent of any thereof, to comply with or satisfy any covenant, condition or
agreement to be complied with or satisfied by it hereunder;
 
    (c)  any facts relating to such party which would make it necessary or
advisable to amend the Joint Proxy Statement or the Registration Statement in
order to make the statements therein not misleading or to comply with applicable
law;
 
    (d)  any notice of, or other communication relating to, a default or event
which, with notice or lapse of time or both, would become a default, received by
it or any of its Subsidiaries subsequent to the date of this Agreement and prior
to the Effective Time, under any contract or agreement material to the financial
condition, properties, businesses or results of operations of it and its
Subsidiaries taken as a whole to which it or any of its Subsidiaries is a party
or is subject; and
 
    (e)  any notice or other communication from any third party alleging that
the consent of such third party is or may be required in connection with the
transactions contemplated by this Agreement; provided, however, that the
delivery of any notice pursuant to this Section 5.17 shall not limit or
otherwise affect the remedies available hereunder to the party receiving such
notice.
 
                                   ARTICLE VI
              CONDITIONS TO THE MERGERS AND THE INTEREST EXCHANGE
 
    6.1  CONDITIONS TO OBLIGATIONS OF EACH PARTY TO EFFECT THE MERGERS AND THE
INTEREST EXCHANGE.  The respective obligations of each party to this Agreement
to effect the Mergers and the Interest Exchange shall be subject to the
satisfaction at or prior to the Effective Time of the following conditions:
 
        (a)  SHAREHOLDER APPROVAL.  The Mergers and the Interest Exchange and
    this Agreement shall have been approved and adopted by the requisite vote of
    the shareholders of each of IWL and the Company in accordance with the TBCA
    and of the Partners in accordance with TRLPA and/or the Agreement of Limited
    Partnership of the Partnership;
 
        (b)  LEGALITY.  No federal, state or foreign statute, rule, regulation,
    executive order, decree or injunction shall have been enacted, entered,
    promulgated or enforced by any court or governmental authority which is in
    effect and has the effect of making the Mergers and the Interest Exchange
    illegal or otherwise prohibiting the consummation of the Mergers and the
    Interest Exchange;
 
        (c)  REGULATORY MATTERS.  All authorizations, consents, orders or
    approvals of, or declarations or filings with, and all expirations of
    waiting periods imposed by, any governmental body, agency or official (all
    of the foregoing, "Consents") which are necessary for the consummation of
    the transactions contemplated hereby (including any consents or approvals
    required by the FCC or any state public utility commissions), other than
    immaterial Consents the failure to obtain which would have no material
    adverse effect on the consummation of the transactions contemplated hereby
    and no Material Adverse Effect on Holdings or the Surviving Corporations,
    shall have been filed, have occurred or have been obtained (all such
    permits, approvals, filings and consents and the lapse of all such waiting
    periods being referred to as the "Requisite Regulatory Approvals") and all
    such Requisite Regulatory Approvals shall be in full force and effect,
    provided, however, that a Requisite Regulatory Approval shall not be deemed
    to have been obtained if in connection with the grant thereof there shall
    have been an imposition by any state or federal governmental body, agency or
    official of any condition, requirement, restriction or change of regulation,
    or any other action directly
 
                                       56
<PAGE>
    or indirectly related to such grant taken by such governmental body, which
    would reasonably be expected to either (i) have a Material Adverse Effect on
    Holdings or the Surviving Corporations, or (ii) prevent the parties hereto
    from realizing in all material respects the economic benefits of the
    transactions contemplated by this Agreement that such parties currently
    anticipate receiving therefrom; provided further, however, that until such
    time as the Requisite Regulatory Approvals have been obtained, there shall
    be no change in the ownership or management of IWL, the Company or the
    Partnership and no transfer of control whatsoever over the governmental
    authorizations held by IWL, the Company or the Partnership except insofar as
    such change in ownership or management or transfer of control may be
    completed without obtaining regulatory approval in order to comply with
    applicable federal, state and local laws, rules, regulations and policies;
 
        (d)  REGISTRATION STATEMENT EFFECTIVE.  The Registration Statement shall
    have become effective prior to the mailing by IWL, the Company and the
    Partnership of the Joint Proxy Statement to their respective shareholders
    and Partners, as applicable, no stop order suspending the effectiveness of
    the Registration Statement shall then be in effect, and no proceedings for
    that purpose shall then be threatened by the SEC or shall have been
    initiated by the SEC and not concluded or withdrawn;
 
        (e)  BLUE SKY.  All state securities or blue sky permits or approvals
    required to carry out the transactions contemplated hereby shall have been
    received;
 
        (f)  NASDAQ LISTING.  The shares of Holdings Common Stock into which the
    shares of IWL Common Stock, Company Common Stock and Partnership Interests
    will be converted pursuant to Article II hereof and the shares of Holdings
    Common Stock issuable upon the exercise of Holdings Options pursuant to
    Section 1.6 hereof shall have been duly approved for listing on the Nasdaq
    National Market, subject to official notice of issuance; and
 
        (g)  LOCK-UP AGREEMENTS.  All of the lock-up agreements required to be
    executed pursuant to Section 5.1(a) shall have been executed and delivered
    to Holdings.
 
    6.2  ADDITIONAL CONDITIONS TO OBLIGATIONS OF THE COMPANY AND THE
PARTNERSHIP.  The obligations of the Company and the Partnership to consummate
and effect this Agreement and the transactions contemplated hereby shall be
subject to the satisfaction at or prior to the Effective Time of each of the
following conditions, any of which may be waived, in writing, exclusively by the
Company and the Partnership:
 
        (a)  REPRESENTATIONS, WARRANTIES AND COVENANTS.  The representations and
    warranties of IWL and the Merger Subsidiaries in this Agreement shall be
    true and correct in all material respects on and as of the Effective Time as
    though such representations and warranties were made on and as of such time
    and IWL and the Merger Subsidiaries shall have performed and complied in all
    material respects with all covenants, obligations and conditions of this
    Agreement required to be performed and complied with by them as of the
    Effective Time.
 
        (b)  CERTIFICATE OF IWL.  Each of the Company and the Partnership shall
    have been provided with a certificate executed on behalf of IWL by its Chief
    Executive Officer or its Chief Financial Officer to the effect that, as of
    the Effective Time:
 
        (i)  all representations and warranties made by IWL and the Merger
    Subsidiaries under this Agreement are true and complete in all material
    respects; and
 
        (ii)  all covenants, obligations and conditions of this Agreement to be
    performed by IWL and the Merger Subsidiaries on or before such date have
    been so performed in all material respects.
 
        (c)  LEGAL OPINIONS.  (i) The Company and the Partnership shall have
    received a legal opinion from Munsch Hardt Kopf Harr & Dinan, P.C. and from
    IWL's regulatory counsel as to corporate and regulatory matters, each dated
    as of the Closing Date and each in form and substance reasonably
    satisfactory to the Company and the Partnership; (ii) the Company and the
    Partnership shall have received an opinion from Hughes & Luce, L.L.P.,
    counsel to the Company and the Partnership, dated
 
                                       57
<PAGE>
    as of the Closing Date, in form and substance reasonably satisfactory to the
    Company and the Partnership, substantially to the effect that, on the basis
    of the facts, representations and assumptions set forth in such opinion: (A)
    no gain or loss will be recognized for federal income tax purposes by
    Holdings, the Company or C-Sub as a result of the formation of Holdings and
    C-Sub and the Merger of C-Sub with and into the Company; (B) no gain or loss
    will be recognized for federal income tax purposes by the shareholders of
    the Company upon their exchange of Company Common Stock for the Company
    Merger Consideration pursuant to such Company Merger; and (C) no gain or
    loss will be recognized for federal income tax purposes by the Partners upon
    their exchange of Partnership Interests for shares of Holdings Common Stock
    pursuant to the Interest Exchange; and (iii) IWL shall have received the
    opinion described in Section 6.3(e)(ii) hereof, in form and substance
    reasonably satisfactory to the Company.
 
        (d)  NO MATERIAL ADVERSE CHANGES.  There shall not have occurred any
    event, fact or condition that has had or reasonably would be expected to
    have a Material Adverse Effect on IWL.
 
        (e)  SATISFACTORY FORM OF LEGAL AND ACCOUNTING MATTERS.  The form, scope
    and substance of all legal, tax and accounting matters contemplated hereby
    and all closing documents and other papers delivered hereunder shall be
    reasonably acceptable to the Company's and the Partnership's counsel and
    accountants.
 
        (f)  AFFILIATE AGREEMENTS.  The Company and the Partnership shall have
    received from each IWL Affiliated Shareholder an executed Affiliate
    Agreement, which shall be in full force and effect.
 
        (g)  EMPLOYMENT AGREEMENTS.  The Employment Agreements shall have been
    duly executed and delivered and shall be in full force and effect.
 
        (h)  IWL SHAREHOLDERS AGREEMENT.  The IWL Shareholders Agreement shall
    have been executed and delivered to the Company and the Partnership on or
    prior to the date hereof.
 
        (i)  POOLING OF INTERESTS LETTER.  Each of the Company and the
    Partnership shall have received a letter from KPMG Peat Marwick, LLP to the
    effect that the Mergers and the Interest Exchange qualify for "pooling of
    interests" accounting treatment under Accounting Principles Board Opinion
    No. 16 if consummated in accordance with this Agreement.
 
        (j)  RELEASE OF GUARANTIES.  The guaranties made by Mr. Jere W.
    Thompson, Jr. and Mr. Mark Langdale of the indebtedness of the Partnership
    to Bank One Texas, N.A. shall have been released and terminated.
 
    6.3  ADDITIONAL CONDITIONS TO THE OBLIGATIONS OF IWL AND THE MERGER
SUBSIDIARIES.  The obligations of IWL and the Merger Subsidiaries to consummate
and effect this Agreement and the transactions contemplated hereby shall be
subject to the satisfaction at or prior to the Effective Time of each of the
following conditions, any of which may be waived, in writing, exclusively by
IWL:
 
        (a)  REPRESENTATIONS, WARRANTIES AND COVENANTS.  The representations and
    warranties of the Company and the Partnership in this Agreement shall be
    true and correct in all material respects on and as of the Effective Time as
    though such representations and warranties were made on and as of such time,
    and the Company and the Partnership shall have performed and complied in all
    material respects with all covenants, obligations and conditions of this
    Agreement required to be performed and complied with by it as of the
    Effective Time.
 
        (b)  CERTIFICATE OF THE COMPANY AND THE PARTNERSHIP.  IWL and the Merger
    Subsidiaries shall have been provided with certificates executed on behalf
    of the Company by its President and the Partnership by its General Partner
    to the effect that, as of the Effective Time:
 
        (i)  all representations and warranties made by the Company and the
    Partnership under this Agreement are true and complete in all material
    respects; and
 
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<PAGE>
        (ii)  all covenants, obligations and conditions of this Agreement to be
    performed by the Company or the Partnership, as the case may be, on or
    before such date have been so performed in all material respects.
 
        (c)  THIRD PARTY CONSENTS.  The Company and the Partnership shall have
    obtained the consents listed in Section 6.3(c) of the Company and
    Partnership Disclosure Schedule, as well as the consent or approval of each
    other Person whose consent or approval shall be required under any agreement
    or instrument in order to permit the consummation of the transactions
    contemplated hereby except those which the failure to obtain would not,
    individually or in the aggregate, have a Material Adverse Effect on Holdings
    or the Surviving Corporations.
 
        (d)  SATISFACTORY FORM OF LEGAL AND ACCOUNTING MATTERS.  The form, scope
    and substance of all legal, tax and accounting matters contemplated hereby
    and all closing documents and other papers delivered hereunder shall be
    reasonably acceptable to IWL's counsel and accountants.
 
        (e)  LEGAL OPINIONS.  (i) IWL and the Merger Subsidiaries shall have
    received a legal opinion from Hughes & Luce, L.L.P. and from regulatory
    counsel to the Company and the Partnership as to corporate and regulatory
    matters, each dated as of the Closing Date and each in form and substance
    reasonably satisfactory to IWL; (ii) IWL shall have received an opinion from
    Munsch Hardt Kopf Harr & Dinan, P.C., dated as of the Closing Date in form
    and substance reasonably satisfactory to the Company and the Partnership,
    substantially to the effect that, on the basis of the facts, representations
    and assumptions set forth in such opinion: (A) no gain or loss will be
    recognized for federal income tax purposes by Holdings, IWL or I-Sub as a
    result of the formation of Holdings and I-Sub and the Merger of I-Sub with
    and into IWL; and (B) no gain or loss will be recognized for federal income
    tax purposes by the shareholders of IWL upon their exchange of IWL Common
    Stock solely for Holdings Common Stock pursuant to such IWL Merger; and
    (iii) the Company and the Partnership shall have received the opinion
    described in Section 6.2(c)(ii) hereof, in form and substance reasonably
    satisfactory to IWL.
 
        (f)  NO MATERIAL ADVERSE CHANGES.  There shall not have occurred any
    event, fact or condition which has had or reasonably would be expected to
    have a Material Adverse Effect on Holdings, the Company, the Partnership or
    the Surviving Corporations since the date hereof.
 
        (g)  AFFILIATE AGREEMENTS.  IWL shall have received from each Company
    and Partnership Affiliated Shareholder an executed Affiliate Agreement,
    which shall be in full force and effect.
 
        (h)  EMPLOYMENT AGREEMENTS.  The Employment Agreements shall have been
    duly executed and delivered and shall be in full force and effect.
 
        (i)  OWNERS AGREEMENT.  The Owners Agreement shall have been executed
    and delivered to IWL on or prior to the date hereof.
 
        (j)  CONTRIBUTION AGREEMENTS.  Each Partner shall have executed and
    delivered to IWL a Contribution Agreement in respect of such Partner's
    Partnership Interest, shall have consented to the transfers of Partnership
    Interests contemplated by the Interest Exchange and shall have consented to
    the substitution of the Company as the new General Partner of the
    Partnership and of Holdings as the new limited partner of the Partnership.
 
        (k)  POOLING ACCOUNTING.  IWL shall have received a letter from KPMG
    Peat Marwick, LLP to the effect that the Mergers and the Interest Exchange
    qualify for "pooling of interests" accounting treatment under Accounting
    Principles Board Opinion No. 16 if consummated in accordance with this
    Agreement.
 
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<PAGE>
                                  ARTICLE VII
                       TERMINATION, AMENDMENT AND WAIVER
 
    7.1  TERMINATION.  This Agreement may be terminated at any time before the
Effective Time, in each case as authorized by the respective Board of Directors
of IWL or the Company or by the General Partner:
 
    (a)  By mutual written consent of each of IWL, the Company and the General
Partner;
 
    (b)  By either IWL, on the one hand, or the Company and the Partnership, on
the other hand, if the Mergers and the Interest Exchange shall not have been
consummated on or before December 31, 1998 (the "Termination Date"); provided,
however, that the right to terminate this Agreement under this Section 7.1(b)
shall not be available to any party whose failure to fulfill any obligation
under this Agreement has been the cause of, or resulted in, the failure of the
Effective Time to occur on or before the Termination Date; and provided,
further, that if on the Termination Date the conditions to the Closing set forth
in Section 6.1(c) shall not have been fulfilled, but all other conditions to the
Closing shall be fulfilled or shall be capable of being fulfilled, then the
Termination Date shall be extended to a date that is one year from the date
hereof;
 
    (c)  By either IWL, the Company or the Partnership if a court of competent
jurisdiction or governmental, regulatory or administrative agency or commission
shall have issued an order, decree or ruling or taken any other action (which
order, decree or ruling the parties hereto shall use their commercially
reasonable efforts to lift), in each case permanently restraining, enjoining or
otherwise prohibiting the transactions contemplated by this Agreement, and such
order, decree, ruling or other action shall have become final and nonappealable;
 
    (d)  By either IWL, on the one hand, or the Company and the Partnership, on
the other hand, if another party shall have breached, or failed to comply with,
in any material respect any of its obligations under this Agreement or any
representation or warranty made by such party shall have been incorrect in any
material respect when made or shall have since ceased to be true and correct in
any material respect, and such breach, failure or misrepresentation is not cured
within 30 days after notice thereof and such breaches, failures or
misrepresentations, individually or in the aggregate and without regard to
materiality qualifiers contained therein, results or would reasonably be
expected to result in a Material Adverse Effect on IWL, on the one hand, or the
Company or the Partnership, on the other hand, as the case may be;
 
    (e)  By either IWL, on the one hand, or the Company and the Partnership, on
the other hand, upon the occurrence of a Material Adverse Effect on another
party or an event which could reasonably be expected to result in a Material
Adverse Effect on the other;
 
    (f)  (i) by IWL (A) if the Board of Directors or any committee of the Board
of Directors of the Company or the General Partner (w) shall withdraw or modify
in any adverse manner its approval or recommendation of this Agreement or the
Mergers or the Interest Exchange, (x) shall fail to reaffirm such approval or
recommendation upon IWL's request, (y) shall approve or recommend any
acquisition of the Company or the Partnership or a material portion of their
respective assets or any tender offer for shares of their capital stock or
partnership interests, in each case, other than by a party hereto or an
affiliate thereof, or (z) shall resolve to take any of the foregoing specified
actions or (B) if the Board of Directors or any committee of the Board of
Directors of IWL (x) shall withdraw or modify in any adverse manner its approval
or recommendation of this Agreement or the Mergers or the Interest Exchange, (y)
shall approve or recommend any acquisition of IWL or a material portion of its
assets or any tender offer for shares of its capital stock, in each case, other
than by a party hereto or an affiliate thereof, or (z) shall resolve to take any
of the foregoing specified actions; or (ii) by the Company and the Partnership
(A) if the Board of Directors or any committee of the Board of Directors of IWL
(w) shall withdraw or modify in any adverse manner its approval or
recommendation of this Agreement or the Mergers or the Interest Exchange, (x)
shall fail to reaffirm such approval or recommendation upon the request of the
Company or the Partnership, (y) shall approve or recommend any acquisition of
IWL or a material portion of its assets or
 
                                       60
<PAGE>
any tender offer for shares of its capital stock, in each case, other than by a
party hereto or an affiliate thereof, or (z) shall resolve to take any of the
foregoing specified actions or (B) if the Board of Directors or any committee of
the Board of Directors of the Company or the General Partner (x) shall withdraw
or modify in any adverse manner its approval or recommendation of this Agreement
or the Mergers or the Interest Exchange, (y) shall approve or recommend any
acquisition of the Company or the Partnership or a material portion of their
respective assets or any tender offer for shares of their capital stock or
partnership interests, in each case, other than by a party hereto or an
affiliate thereof, or (z) shall resolve to take any of the foregoing specified
actions;
 
    (g)  By either (i) IWL (A) if any of the required approvals of the
shareholders or Partners, as the case may be, of the Company and the
Partnership, as the case may be, shall fail to have been obtained at a duly held
shareholders or Partners' meeting, as the case may be, of the Company or the
Partnership, including any adjournments thereof, or (B) if the required approval
of the shareholders of IWL shall fail to have been obtained at a duly held
shareholders meeting of IWL, including any adjournments thereof; or (ii) the
Company and the Partnership (A) if any of the required approvals of the
shareholders or Partners, as the case may be, of the Company and the
Partnership, as the case may be, shall fail to have been obtained at a duly held
shareholders or Partners' meeting, as the case may be, of the Company or the
Partnership, including any adjournments thereof, or (B) if the required approval
of the shareholders of IWL shall fail to have been obtained at a duly held
shareholders meeting of IWL, including any adjournments thereof;
 
    (h)  By the Company or the Partnership, prior to the approval of this
Agreement by the shareholders of the Company or the Partners, as the case may
be, upon two business days' prior notice to IWL, if, as a result of an
Acquisition Proposal received by the Company or the Partnership from a Person
other than a party to this Agreement or any of its affiliates, the Board of
Directors of the Company or the General Partner, as the case may be, determines
in good faith, on the basis of oral or written advice of outside counsel, that
their fiduciary obligations under applicable law require that such Acquisition
Proposal be accepted; provided, however, that (i) the Board of Directors of the
Company or the General Partner shall have concluded in good faith, after
considering applicable provisions of law, on the basis of oral or written advice
of outside counsel, that such action is necessary for the Board of Directors or
the General Partner to act in a manner consistent with its fiduciary duties
under applicable law and (ii) prior to any such termination, the Company or the
Partnership shall, and shall cause its respective financial and legal advisors
to, negotiate with IWL to adjust the terms and conditions of this Agreement to
provide the opportunity for the Company or the Partnership to proceed with the
transactions contemplated hereby; or
 
    (i)  By IWL, prior to the approval of this Agreement by the shareholders of
the IWL upon two business days' prior notice to the Company and the Partnership,
if, as a result of an Acquisition Proposal received by IWL from a Person other
than a party to this Agreement or any of its affiliates, the Board of Directors
of IWL determines in good faith, on the basis of oral or written advice of
outside counsel that their fiduciary obligations under applicable law require
that such Acquisition Proposal be accepted; provided however, that (i) the Board
of Directors of IWL shall have concluded in good faith, after considering
applicable provisions of law, on the basis of oral or written advice of outside
counsel, that such action is necessary for the Board of Directors to act in a
manner consistent with its fiduciary duties under applicable law and (ii) prior
to any such termination, IWL shall, and shall cause its respective financial and
legal advisors to, negotiate with the Company and the Partnership to adjust the
terms and conditions of this Agreement to provide the opportunity for IWL to
proceed with the transactions contemplated hereby;
 
provided further, however, that no termination shall be effective pursuant to
Sections 7.1(f), (g), (h) or (i) under circumstances in which a termination fee
is payable by IWL, on the one hand, or the Company and the Partnership, on the
other hand, under Section 7.2(b) or (c) unless concurrently with such
termination, such termination fee is paid in full by IWL, on the one hand, or
the Company and the Partnership, on the other hand, in accordance with the
provisions of Sections 7.2(b) or (c), as applicable.
 
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<PAGE>
    7.2  EFFECT OF TERMINATION.
 
    (a)  In the event of termination of this Agreement as provided in Section
7.1 hereof, and subject to the provisions of Section 8.1 hereof, this Agreement
shall forthwith become void and there shall be no liability on the part of any
of the parties hereto, except (i) as set forth in this Section 7.2 and in
Sections 2.19, 2.24, 2A.18, 2A.23, 3.5, 3.6 and 8.10 hereof, and (ii) nothing
herein shall relieve any party hereto from liability for any willful breach
hereof.
 
    (b)  If (i) this Agreement (A) is terminated by IWL pursuant to Section
7.1(f)(i)(A) or Section 7.1(g)(i)(A) or by the Company or the Partnership
pursuant to Section 7.1(f)(ii)(B), Section 7.1(g)(ii)(A) or Section 7.1(h)
hereof, or (B) is terminated as a result of the Company's or the Partnership's
material breach of Section 5.2 hereof which is not cured within 30 days after
notice thereof to the Company or the Partnership, as appropriate, and (ii) at
the time of such termination or prior to the meeting of the Company's
shareholders or the Partners there shall have been an Acquisition Proposal
involving the Company or any of its Subsidiaries or the Partnership (whether or
not such offer shall have been rejected or shall have been withdrawn prior to
the time of such termination or of the meeting), the Company or the Partnership,
as the case may be, shall pay to IWL a termination fee of $2.5 million, which
shall be payable in cash at the date of termination.
 
    (c)  If (i) this Agreement (A) is terminated by the Company or the
Partnership pursuant to Section 7.1(f)(ii)(A) or Section 7.1(g)(ii)(B) or by IWL
pursuant to Section 7.1(f)(i)(B), Section 7.1(g)(i)(B) or Section 7.1(i), or (B)
is terminated as a result of IWL's material breach of Section 5.2 hereof which
is not cured within 30 days after notice thereof to IWL, and (ii) at the time of
such termination or prior to the meeting of IWL's shareholders there shall have
been an Acquisition Proposal involving IWL or any of its Subsidiaries (whether
or not such offer shall have been rejected or shall have been withdrawn prior to
the time of such termination or of the meeting), IWL shall pay to the Company
and the Partnership an aggregate termination fee of $2.5 million, which shall be
payable in cash at the date of termination.
 
    (d)  The Company, the Partnership, and IWL agree that the agreements
contained in Section 7.2(b) and Section 7.2(c) above are an integral part of the
transactions contemplated by this Agreement and constitute liquidated damages
and not a penalty. If any party fails to promptly pay any fee due under Section
7.2(b) or Section 7.2(c), then such party shall pay the costs and expenses
(including reasonable legal fees and expenses) in connection with any action,
including the filing of any lawsuit or other legal action, taken to collect
payment, together with interest on the amount of any unpaid fee at the publicly
announced prime rate of Bank One Texas, N.A. from the date such fee was required
to be paid.
 
    7.3  AMENDMENT.  This Agreement may be amended by the parties hereto
pursuant to a writing adopted by action taken by all of the parties at any time
before the Effective Time; provided, however, that, after approval of the
Mergers and the Interest Exchange by the shareholders of IWL or the Company or
the Partners, whichever shall occur first, no amendment may be made which would
(a) alter or change the amount or kinds of consideration to be received by the
holders of shares of IWL Common Stock or Company Common Stock and the
Partnership Interests upon consummation of the Mergers and the Interest
Exchange, (b) alter or change any term of the Articles of Incorporation of the
Surviving Corporations, or (c) alter or change any of the terms and conditions
of this Agreement if such alteration or change would adversely affect the
holders of any class or series of securities of Holdings, IWL, the Company or
the Partnership. This Agreement may not be amended except by an instrument in
writing signed by the parties.
 
    7.4  WAIVER.  At any time before the Effective Time, any party may (a)
extend the time for the performance of any of the obligations or other acts of
the other parties hereto, (b) waive any inaccuracies in the representations and
warranties contained herein or in any document delivered pursuant hereto and (c)
waive compliance with any of the agreements or conditions contained herein. Any
agreement on the part of a party to any such extension or waiver shall be valid
only as against such party and only if set forth in an instrument in writing
signed by such party.
 
                                       62
<PAGE>
                                  ARTICLE VIII
                               GENERAL PROVISIONS
 
    8.1  SURVIVAL OF REPRESENTATIONS AND WARRANTIES.  All covenants to be
performed prior to the Effective Time, and all representations and warranties in
this Agreement or in any instrument delivered pursuant to this Agreement
(including the Affiliate Agreements) shall survive the Mergers and the Interest
Exchange and continue until the earlier of (i) the date one year following the
Effective Time or (ii) the date Holdings publicly announces financial results
covering at least 30 days of combined operations of IWL, the Partnership and the
Company, provided that any representation or warranty relating or pertaining to
Company Taxes shall terminate upon the expiration of all applicable statutes of
limitations relevant to Company Taxes or Tax matters. All covenants to be
performed after the Effective Time shall continue indefinitely.
 
    8.2  NOTICES.  All notices and other communications hereunder shall be in
writing and shall be deemed given and received if delivered personally or by
commercial delivery service, or three business days after being mailed by
registered or certified mail (return receipt requested) or sent via telecopy to
the parties at the following addresses (or at such other address for a party as
shall be specified by like notice):
 
    (a)  if to IWL or any Merger Subsidiary, to:
 
         IWL Communications, Inc.
 
         12000 Aerospace Avenue, Suite 200
 
         Houston, Texas 77034
 
         Attn: Chief Executive Officer
 
         Facsimile No.: (281) 929-1004
 
         with a copy to:
 
         Munsch Hardt Kopf Harr & Dinan, P.C.
 
         4000 Fountain Place
 
         1445 Ross Avenue
 
         Dallas, Texas 75202-2790
 
         Attn: A. Michael Hainsfurther, Esq.
 
         Facsimile No.: (214) 855-7584
 
    (b)  if to the Company, to:
 
         CapRock Communications Corp.
 
         Two Galleria Tower, Suite 1925
 
         13455 Noel Road
 
         Dallas, Texas 75240-6638
 
         Attn: Jere W. Thompson, Jr.
 
         Facsimile No.: (972) 788-4243
 
         or if to the Partnership, to:
 
         CapRock Fiber Network, Ltd.
 
         Two Galleria Tower, Suite 1925
 
         13455 Noel Road
 
         Dallas, Texas 75240-6638
 
         Attn: Jere W. Thompson, Jr.
 
         Facsimile No.: (972) 788-4243
 
                                       63
<PAGE>
         each with a copy to:
 
         Hughes & Luce, L.L.P.
 
         1717 Main Street, Suite 2800
 
         Dallas, Texas 75201
 
         Attn: Dudley W. Murrey, Esq.
 
         Facsimile No.: (214) 939-6100
 
    8.3  INTERPRETATION.  When a reference is made in this Agreement to
Schedules or Exhibits, such reference shall be to a Schedule or Exhibit to this
Agreement unless otherwise indicated. The words "include," "includes" and
"including" when used herein shall be deemed in each case to be followed by the
words "without limitation." The table of contents and headings contained in this
Agreement are for reference purposes only and shall not affect in any way the
meaning or interpretation of this Agreement. The Disclosure Schedules and
Exhibits to this Agreement are hereby incorporated by reference into and made a
part of this Agreement for all purposes.
 
    8.4  COUNTERPARTS.  This Agreement may be executed in one or more
counterparts, all of which shall be considered one and the same agreement and
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other party, it being understood that all
parties need not sign the same counterpart.
 
    8.5  MISCELLANEOUS.  This Agreement and the documents and instruments and
other agreements among the parties hereto (including the Confidentiality
Agreement) (a) constitute the entire agreement among the parties with respect to
the subject matter hereof and supersede all prior agreements and understandings,
both written and oral among the parties with respect to the subject matter
hereof, including the parties' letter of intent with respect to this
transaction, but excluding the Confidentiality Agreement; (b) are not intended
to confer upon any other Person any rights or remedies hereunder; and (c) shall
not be assigned by operation of law or otherwise except as otherwise
specifically provided.
 
    8.6  GOVERNING LAW.  This Agreement shall be governed in all respects,
including validity, interpretation and effect, by the laws of the State of
Texas. All parties hereto agree to submit to the jurisdiction of the federal and
state courts of the State of Texas, and further agree that service of documents
commencing any suit therein may be made as provided in Section 8.2.
 
    8.7  ATTORNEYS' FEES.  If any party to this Agreement brings an action
against another party to this Agreement to enforce its rights under this
Agreement, the prevailing party shall be entitled to recover its reasonable
costs and expenses, including reasonable attorneys' fees and costs, incurred in
connection with such action, including any appeal of such action.
 
    8.8  ARBITRATION.  Any controversy or claim arising out of or relating to
this Agreement or the breach thereof, shall be settled by arbitration in Dallas,
Texas, in accordance with the rules of the American Arbitration Association, and
judgment upon the award rendered by the arbitrator(s) may be entered in any
court having jurisdiction thereof.
 
    8.9  RULES OF CONSTRUCTION.  The parties hereto agree that they have been
represented by counsel during the negotiation and execution of this Agreement
and, therefore, waive the application of any law, regulation, holding or rule of
construction providing that ambiguities in an agreement or other document will
be construed against the party drafting such agreement or document.
 
    8.10  SEVERABILITY.  If any term or other provision of this Agreement is
invalid, illegal or incapable of being enforced by any rule of law or public
policy, all other conditions and provisions of this Agreement shall nevertheless
remain in full force and effect so long as the economic or legal substance of
the transactions contemplated hereby is not affected in any manner adverse to
any party hereto. Upon such determination that any term or other provision is
invalid, illegal or incapable of being enforced, the parties hereto shall
negotiate in good faith to modify this Agreement so as to effect the original
intent of the
 
                                       64
<PAGE>
parties hereto as closely as possible in an acceptable manner to the end that
the transactions contemplated hereby are fulfilled to the maximum extent
possible.
 
    8.11  DEFINITIONS.  Terms used herein with initial capital letters shall
have the respective meanings set forth below:
 
    "Acquisition Proposal" shall mean a proposal or offer for a tender or
exchange offer, merger, consolidation or other business combination involving
the Company or the Partnership or any proposal to acquire in any manner a
substantial equity interest in, or all or substantially all of the assets of the
Company or the Partnership.
 
    "Affiliated Shareholders" has the meaning set forth in Section 5.8.
 
    "Agreement" shall have the meaning set forth in the introductory paragraph
of this Agreement.
 
    "Articles of Merger" shall have the meaning set forth in Section 1.2(a).
 
    "Closing" shall have the meaning set forth in Section 1.2(c).
 
    "Closing Date" shall have the meaning set forth in Section 1.2(c).
 
    "COBRA" shall have the meaning set forth in Section 2.20.
 
    "Code" shall have the meaning set forth in Recital F to this Agreement.
 
    "Company" shall have the meaning set forth in the introductory paragraph of
this Agreement.
 
    "Company Authorizations" shall have the meaning set forth in Section 2.14.
 
    "Company Balance Sheet" shall have the meaning set forth in Section 2.5.
 
    "Company Commercial Software Rights" shall have the meaning set forth in
Section 2.11(b).
 
    "Company Common Stock" shall have the meaning set forth in Section 1.6(a).
 
    "Company Disclosure Schedule" shall have the meaning set forth in the
introductory paragraph of Article II.
 
    "Company Employee Plans" shall have the meaning set forth in Section
2.27(a).
 
    "Company Equity Rights" shall have the meaning set forth in Section 2.3(a).
 
    "Company ERISA Affiliates" shall have the meaning set forth in Section
2.27(a).
 
    "Company Exchange Ratio" shall have the meaning set forth in Section 1.6(a).
 
    "Company Financial Statements" shall have the meaning set forth in Section
2.5.
 
    "Company Intellectual Property Rights" shall have the meaning set forth in
Section 2.11(a).
 
    "Company Merger" shall have the meaning set forth in Recital A to this
Agreement.
 
    "Company Merger Consideration" shall have the meaning set forth in Section
1.6(a).
 
    "Company Returns" shall have the meaning set forth in Section 2.8(a).
 
    "Confidentiality Agreement" shall have the meaning set forth in Section 5.4.
 
    "Consents" shall have the meaning set forth in Section 6.1(c).
 
    "Contribution Agreement" shall have the meaning set forth in Section 1.2(b).
 
    "Converted Option" shall have the meaning set forth in Section 1.6(g).
 
    "C-Sub" shall have the meaning set forth in the introductory paragraph of
this Agreement.
 
                                       65
<PAGE>
    "Dissenter" shall have the meaning set forth in Section 1.7(a).
 
    "Dissenters' Shares" shall have the meaning set forth in Section 1.7(a).
 
    "Effective Time" shall have the meaning set forth in Section 1.2(a).
 
    "Employee Safety Laws" shall have the meaning set forth in Section 2.18(d).
 
    "Employment Agreement" shall have the meaning set forth in Section 5.12.
 
    "End-User Licenses" shall have the meaning set forth in Section 2.11(a).
 
    "Environmental Law" shall have the meaning set forth in Section 2.18(b).
 
    "Equipment" shall have the meaning set forth in Section 2.10(c).
 
    "ERISA" shall have the meaning set forth in Section 2.27(a).
 
    "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended.
 
    "Exchange Agent" shall have the meaning set forth in Section 1.6(d).
 
    "Exchange Fund" shall have the meaning set forth in Section 1.6(d).
 
    "Exchange Ratios" shall have the meaning set forth in Section 1.6(a).
 
    "FCC" shall have the meaning set forth in Section 3.3.
 
    "GAAP" shall have the meaning set forth in Section 2.5.
 
    "General Partner" shall have the meaning set forth in Recital A to this
Agreement.
 
    "Governmental Entity" shall have the meaning set forth in Section 2.4.
 
    "Holdings" shall have the meaning set forth in the introductory paragraph of
this Agreement.
 
    "Holdings Common Stock" shall have the meaning set forth in Recital A to
this Agreement.
 
    "Holdings Option" shall have the meaning set forth in Section 1.6(g).
 
    "ICEL" shall have the meaning set forth in Section 3.31.
 
    "ICEL Stock Purchase Agreement" shall mean that certain Agreement dated
January 21, 1998, among IWL, NERA Limited, and Thomas Norman Blair and Margery
Helen Blair for the sale and purchase of the whole of the issued share capital
of ICEL, including all schedules and exhibits attached thereto.
 
    "Interest Exchange" shall have the meaning set forth in Recital A to this
Agreement.
 
    "Interest Exchange Consideration" shall have the meaning set forth in
Section 1.6(a).
 
    "IRS" shall have the meaning set forth in Section 2.27(b).
 
    "I-Sub" shall have the meaning set forth in the introductory paragraph of
this Agreement.
 
    "IWL" shall have the meaning set forth in the introductory paragraph of this
Agreement.
 
    "IWL Authorizations" shall have the meaning set forth in Section 3.17.
 
    "IWL Commercial Software Rights" shall have the meaning set forth in Section
3.15(b).
 
    "IWL Common Stock" shall have the meaning set forth in Section 1.6(a).
 
    "IWL Disclosure Schedule" shall have the meaning set forth in the
introductory paragraph of Article III.
 
                                       66
<PAGE>
    "IWL Employee Plans" shall have the meaning set forth in Section 3.25(a).
 
    "IWL Equity Rights" shall have the meaning set forth in Section 3.2(b).
 
    "IWL ERISA Affiliate" shall have the meaning set forth in Section 3.25(a).
 
    "IWL Exchange Ratio" shall have the meaning set forth in Section 1.6(a).
 
    "IWL Financial Statements" shall have the meaning set forth in Section 3.4.
 
    "IWL Intellectual Property Rights" shall have the meaning set forth in
Section 3.15(a).
 
    "IWL Merger" shall have the meaning set forth in Recital A to this
Agreement.
 
    "IWL Merger Consideration" shall have the meaning set forth in Section
1.6(a).
 
    "IWL Returns" has the meaning set forth in Section 3.12(a).
 
    "IWL Shareholders Agreement" shall have the meaning set forth in Recital E
to this Agreement.
 
    "Joint Proxy Statement" shall have the meaning set forth in Section 2.24.
 
    "Limited Partners" shall have the meaning set forth in Section 1.2(b).
 
    "Material Adverse Effect" shall mean any change in or effect on the business
of the referenced corporation or partnership or any of its Subsidiaries that is
or will be materially adverse to the business, operations (including the income
statement), properties (including intangible properties), condition (financial
or otherwise), assets, liabilities or regulatory status of such referenced
corporation and its Subsidiaries taken as a whole, but shall not include the
effects of changes that are generally applicable in (a) the United States
economy or (b) the United States securities markets if, in any of (a) or (b),
the effect on IWL, the Company or the Partnership (as the case may be) and its
respective Subsidiaries, taken as a whole, is not disproportionate relative to
the effect on the other and its Subsidiaries, taken as a whole.
 
    "Merged Corporation" shall have the meaning set forth in Section 1.6.
 
    "Merger Subsidiary" shall have the meaning set forth in the introductory
paragraph of Article III.
 
    "Mergers" shall have the meaning set forth in Recital A to this Agreement.
 
    "Options" shall have the meaning set forth in Section 1.6(g).
 
    "Owners Agreement" shall have the meaning set forth in Recital D to this
Agreement.
 
    "Partners" shall have the meaning set forth in Section 1.2(b).
 
    "Partnership" shall have the meaning set forth in the introductory paragraph
of this Agreement.
 
    "Partnership Authorizations" shall have the meaning set forth in Section
2A.14.
 
    "Partnership Balance Sheet" shall have the meaning set forth in Section
2A.5.
 
    "Partnership Commercial Software Rights" shall have the meaning set forth in
Section 2A.11(b).
 
    "Partnership Disclosure Schedule" shall have the meaning set forth in the
introductory paragraph of Article IIA.
 
    "Partnership Employee Plans" shall have the meaning set forth in Section
2A.26(a).
 
    "Partnership Equity Rights" shall have the meaning set forth in Section
2A.3(a).
 
    "Partnership Financial Statements" shall have the meaning set forth in
Section 2A.5.
 
    "Partnership Intellectual Property Rights" shall have the meaning set forth
in Section 2A.11(a).
 
    "Partnership Interests" shall have the meaning set forth in Recital A to
this Agreement.
 
                                       67
<PAGE>
    "Partnership Returns" shall have the meaning set forth in Section 2A.8(a).
 
    "Person" means an individual, corporation, partnership, limited liability
company, association, trust, unincorporated organization, entity or group (as
defined in the Exchange Act).
 
    "Pre-Surrender Dividends" shall have the meaning set forth in Section
1.6(d).
 
    "Registration Statement" shall have the meaning set forth in Section 2.24.
 
    "Requisite Regulatory Approvals" shall have the meaning set forth in Section
6.1(c).
 
    "SEC" shall mean the Securities and Exchange Commission.
 
    "SEC Documents" shall have the meaning set forth in Section 3.4.
 
    "Securities Act" shall have the meaning set forth in Section 2.24.
 
    "Shareholders' Meeting" shall have the meaning set forth in Section 5.2(a).
 
    "Shares" shall have the meaning set forth in Section 1.6(d).
 
    "Subsidiary" means any corporation or other legal entity of which IWL, the
Company or the Partnership, as the case may be (either alone or through or
together with any other Subsidiary or Subsidiaries), owns, directly or
indirectly, more than 50% of the stock or other equity interests the holders of
which are generally entitled to vote for the election of the board of directors
or other governing body of such corporation or other legal entity, except that
in the case of IWL, ICEL shall not, for any purposes of this Agreement, be
considered a Subsidiary of IWL.
 
    "Surviving Corporation" shall have the meaning set forth in Section 1.1.
 
    "Tax" or "Taxes" shall have the meaning set forth in Section 2.8(a).
 
    "TBCA" shall have the meaning set forth in Section 1.7(a).
 
    "Termination Date" shall have the meaning set forth in Section 7.1(b).
 
    "TRLPA" shall have the meaning set forth in Section 5.2(a).
 
                                       68
<PAGE>
    IN WITNESS WHEREOF, Holdings, IWL, the Merger Subsidiaries, the Company and
the Partnership have caused this Agreement to be signed by themselves or their
duly authorized respective officers or general partners, all as of the date
first written above.
 
<TABLE>
<S>                                           <C>        <C>
                                              IWL HOLDINGS CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                Chief Executive Officer
                                                         -----------------------------------------
 
                                              IWL COMMUNICATIONS, INCORPORATED
 
                                              By:                 /s/ IGNATIUS W. LEONARDS
                                                         -----------------------------------------
                                              Its:                Chief Executive Officer
                                                         -----------------------------------------
 
                                              IWL ACQUISITION CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                Chief Executive Officer
                                                         -----------------------------------------
 
                                              CAPROCK COMMUNICATIONS CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                Chief Executive Officer
                                                         -----------------------------------------
 
                                              CAPROCK ACQUISITION CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                       President
                                                         -----------------------------------------
 
                                              CAPROCK FIBER NETWORK, LTD.
 
                                              By:        CapRock Systems, Inc.
                                              Its:       General Partner
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                       President
                                                         -----------------------------------------
</TABLE>
 
                                       69
<PAGE>
                        FIRST AMENDMENT TO AGREEMENT AND
                      PLAN OF MERGER AND PLAN OF EXCHANGE
 
    This FIRST AMENDMENT TO AGREEMENT AND PLAN OF MERGER AND PLAN OF EXCHANGE
(this "Amendment") is made and entered into as of April 30, 1998, among IWL
Communications, Incorporated, a Texas corporation ("IWL"), IWL Holdings Corp., a
Texas corporation ("Holdings"), IWL Acquisition Corp., a Texas corporation
("I-Sub") and a wholly owned subsidiary of Holdings, CapRock Communications
Corp., a Texas corporation (the "Company"), CapRock Acquisition Corp., a Texas
corporation ("C-Sub") and a wholly owned subsidiary of Holdings, and CapRock
Fiber Network, Ltd., a Texas limited partnership (the "Partnership").
 
                                   RECITALS:
 
    A. IWL, Holdings, I-Sub, the Company, C-Sub and the Partnership previously
entered into that certain Agreement and Plan of Merger and Plan of Exchange
dated as of February 16, 1998 (the "Merger Agreement") pursuant to which, among
other things, (a) IWL and I-Sub are to combine into a single company through the
statutory merger of I-Sub with and into IWL (the "IWL Merger"), (b) the Company
and C-Sub are to combine into a single company through the statutory merger of
C-Sub with and into the Company (the "Company Merger" and, together with the IWL
Merger, the "Mergers"), and (c) upon consummation of the Mergers, all of the
general and limited partnership interests in the Partnership are to be exchanged
for shares of the common stock, par value $.01 per share, of Holdings (the
"Holdings Common Stock") in the manner and order as set forth in the Merger
Agreement.
 
    B. The parties hereto desire to enter into this Amendment to amend certain
terms of the Merger Agreement. Capitalized terms not otherwise defined herein
shall have the meaning given to such terms by the Merger Agreement.
 
                                   AGREEMENT:
 
    NOW, THEREFORE, in consideration of the covenants, promises and
representations set forth herein, and for other good and valuable consideration,
the parties agree as follows:
 
1.  AMENDMENTS.  Section 2.3 of the Company Disclosure Schedule is hereby
    deleted in its entirety and, as of the date hereof, replaced with the
    Section 2.3 of the Company Disclosure Schedule attached to this Amendment
    and made a part hereof. Exhibit 1.6(a) to the Merger Agreement is hereby
    deleted in its entirety and, as of the date hereof, replaced with Exhibit
    1.6(a) attached to this Amendment and made a part hereof.
 
2.  IWL OPTIONS. All references in the Merger Agreement to "Options" and to
    "Holdings Options" shall include any IWL Equity Rights, including warrants,
    that are listed in Section 3.2 of the IWL Dislcosure Schedule.
 
3.  PAYMENT OF TERMINATION FEE.  Section 7.2(b) of the Merger Agreement provides
    that in certain events, as specified therein, the Company or the
    Partnership, as the case may be, will be required to pay to IWL a
    termination fee of $2,500,000 (the "Termination Fee"). In the event that the
    Company and/or the Partnership is required to pay the Termination Fee under
    Section 7.2(b) of the Merger Agreement, then the Company shall pay
    $1,875,000 of the Termination Fee to IWL and the Partnership shall pay
    $625,000 of the Termination Fee (for an aggregate of $2,500,000) to IWL.
    Section 7.2(c) of the Merger Agreement provides that in certain events, as
    specified therein, IWL will be required to pay to the Company and the
    Partnership an aggregate Termination Fee of $2,500,000. In the event that
    IWL is required to pay the Termination Fee under Section 7.2(c) of the
    Merger Agreement, then IWL shall pay $1,875,000 of the Termination Fee to
    the Company and shall pay $625,000 of the Termination Fee (for an aggregate
    of $2,500,000) to the Partnership.
 
4.  NO OTHER CHANGES.  Except as expressly amended herein, the Merger Agreement
    shall remain unchanged and shall continue in full force and effect.
<PAGE>
5.  COUNTERPARTS; EFFECTIVENESS.  This Amendment may be executed in one or more
    counterparts, all of which will be considered one and the same agreement and
    will become effective when one or more counterparts have been signed by each
    of the parties and delivered to the other party, it being understood that
    all parties need not sign the same counterpart. Counterparts of this
    Amendment, and any signatures thereon, transmitted by facsimile will be
    deemed originals for all purposes.
 
6.  GOVERNING LAW.  This Amendment shall be governed in all respects, including
    validity, interpretation and effect, by the laws of the Sate of Texas.
 
                                       2
<PAGE>
    IN WITNESS WHEREOF, Holdings, IWL, I-Sub, the Company, C-Sub, and the
Partnership have caused this Agreement to be signed by themselves or their duly
authorized respective officers or general partners, all as of the date first
written above.
 
<TABLE>
<S>                                           <C>        <C>
                                              IWL HOLDINGS CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                Chief Executive Officer
                                                         -----------------------------------------
 
                                              IWL COMMUNICATIONS, INCORPORATED
 
                                              By:                 /s/ IGNATIUS W. LEONARDS
                                                         -----------------------------------------
                                              Its:                Chief Executive Officer
                                                         -----------------------------------------
 
                                              IWL ACQUISITION CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                Chief Executive Officer
                                                         -----------------------------------------
 
                                              CAPROCK COMMUNICATIONS CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                       President
                                                         -----------------------------------------
 
                                              CAPROCK ACQUISITION CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                Chief Executive Officer
                                                         -----------------------------------------
 
                                              CAPROCK FIBER NETWORK, LTD.
 
                                              By:        CapRock Systems, Inc.
                                              Its:       General Partner
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                       President
                                                         -----------------------------------------
</TABLE>
 
                                       3
<PAGE>
                       SECOND AMENDMENT TO AGREEMENT AND
                      PLAN OF MERGER AND PLAN OF EXCHANGE
 
    This SECOND AMENDMENT TO AGREEMENT AND PLAN OF MERGER AND PLAN OF EXCHANGE
(this "Amendment") is made and entered into as of June 20, 1998, among IWL
Communications, Incorporated, a Texas corporation ("IWL"), CapRock
Communications Corp., a Texas corporation formerly known as IWL Holdings Corp.
("Holdings"), IWL Acquisition Corp., a Texas corporation ("I-Sub") and a wholly
owned subsidiary of Holdings, CapRock Telecommunications Corp., a Texas
corporation formerly known as CapRock Communications Corp. (the "Company"),
CapRock Acquisition Corp., a Texas corporation ("C-Sub") and a wholly owned
subsidiary of Holdings, and CapRock Fiber Network, Ltd., a Texas limited
partnership (the "Partnership").
 
                                   RECITALS:
 
    A. IWL, Holdings, I-Sub, the Company, C-Sub and the Partnership previously
entered into that certain Agreement and Plan of Merger and Plan of Exchange
dated as of February 16, 1998, as amended by the First Amendment to Agreement
and Plan of Merger and Plan of Exchange dated April 30, 1998 by and among such
parties (as amended, the "Merger Agreement"), pursuant to which, among other
things, (a) IWL and I-Sub are to combine into a single company through the
statutory merger of I-Sub with and into IWL (the "IWL Merger"), (b) the Company
and C-Sub are to combine into a single company through the statutory merger of
C-Sub with and into the Company (the "Company Merger" and, together with the IWL
Merger, the "Mergers"), and (c) in connection with the Mergers, all of the
general and limited partnership interests in the Partnership are to be exchanged
for shares of the common stock, par value $.01 per share, of Holdings in the
manner and order as set forth in the Merger Agreement.
 
    B. The parties hereto desire to enter into this Amendment to amend certain
terms of the Merger Agreement. Capitalized terms not otherwise defined herein
shall have the meaning given to such terms by the Merger Agreement.
 
                                   AGREEMENT:
 
    NOW, THEREFORE, in consideration of the covenants, promises and
representations set forth herein, and for other good and valuable consideration,
the parties agree as follows:
 
1.  AMENDMENT TO SECTION 1.1.  Section 1.1 of the Merger Agreement, titled "THE
    MERGERS AND THE INTEREST EXCHANGE," is hereby amended in its entirety to
    read, as of the date hereof, as follows:
 
   "On the Closing Date and subject to and upon the terms and conditions of this
    Agreement and the applicable laws of Texas, the following actions shall
    occur in the following order: (a) I-Sub shall be merged with and into IWL in
    the IWL Merger, the separate corporate existence of I-Sub shall cease, and
    IWL shall continue as the surviving corporation in the IWL Merger, (b) after
    consummation of the IWL Merger and prior to consummation of the Company
    Merger, all of the outstanding Partnership Interests of the Partnership
    shall be contributed to Holdings pursuant to, and in the order contemplated
    by, the Interest Exchange, and (c) after consummation of the IWL Merger and
    the Interest Exchange, C-Sub shall be merged with and into the Company in
    the Company Merger, the separate corporate existence of C-Sub shall cease,
    and the Company shall continue as the surviving corporation in the Company
    Merger. The Company and IWL as the surviving corporations after the Mergers
    are hereinafter sometimes collectively referred to as the "Surviving
    Corporations" and individually as a "Surviving Corporation.""
 
2.  AMENDMENT TO SECTIONS 1.2(A) AND (B).  Sections 1.2(a) and (b) of the Merger
    Agreement are each hereby amended in their entirety to read, as of the date
    hereof, as follows:
 
   "(a) As promptly as practicable after the satisfaction or waiver of the
    conditions set forth in Article VI (and prior to the consummation of the
    Interest Exchange), the parties hereto shall cause the IWL
 
                                       1
<PAGE>
    Merger to be consummated by filing Articles of Merger ("Articles of Merger")
    with the Secretary of State of Texas in such form as required by, and
    executed in accordance with the relevant provisions of, the laws of the
    State of Texas and, after consummation of the Interest Exchange, the parties
    hereto shall cause the Company Merger to be consummated by filing Articles
    of Merger with the Secretary of State of Texas in such form as required by,
    and executed in accordance with the relevant provisions of, the laws of the
    State of Texas (the time at which both such filings have been made in Texas
    and the Secretary of State of the State of Texas has issued a certificate of
    merger with respect to both of the IWL Merger and the Company Merger is
    referred to herein as the "Effective Time").
 
   (b) On the Closing Date (and after consummation of the IWL Merger but prior
    to consummation of the Company Merger), (i) the General Partner shall
    execute and deliver to Holdings a contribution agreement substantially in
    the form agreed upon by the parties hereto (a "Contribution Agreement")
    pursuant to which the General Partner shall contribute its general
    Partnership Interest in the Partnership to Holdings, (ii) immediately
    thereafter, Holdings shall (pursuant to the terms of such Contribution
    Agreement) contribute the general Partnership Interest in the Partnership to
    C-Sub (the intention of the parties hereto being that the Company, upon
    consummation of the Company Merger, will acquire by operation of law the
    general Partnership Interest being contributed by Holdings to C-Sub), and
    (iii) immediately following the consummation of the contribution of the
    general Partnership Interest to C-Sub, each of the limited partners in the
    Partnership (the "Limited Partners" and, collectively with the General
    Partner, the "Partners") shall execute and deliver to Holdings a
    Contribution Agreement pursuant to which the Limited Partners shall
    contribute their respective limited Partnership Interests in the Partnership
    to Holdings. Notwithstanding anything to the contrary contained herein, all
    of the contributions of Partnership Interests referred to in the immediately
    preceding sentence shall be deemed to have occurred immediately after
    consummation of the IWL Merger and immediately prior to consummation of the
    Company Merger. Reasonably promptly after the Effective Time, the
    Partnership shall file a certificate of amendment to its certificate of
    limited partnership to reflect that the Company has become the new general
    partner of the Partnership and that the General Partner is the withdrawing
    general partner. The Partnership and the General Partner hereby consent to
    (and each Contribution Agreement delivered hereunder by a Limited Partner
    shall include such Limited Partner's consent to) the transfers of the
    Partnership Interests contemplated by this Agreement and hereby agree (and
    each Contribution Agreement delivered hereunder by a Limited Partner shall
    include such Limited Partner's agreement) that, effective at the Effective
    Time and subject to the consummation of the transactions contemplated
    hereby, Holdings shall become a substituted limited partner in the
    Partnership and, at the Effective Time, the Company shall become a
    substituted general partner in the Partnership and the status of the
    Partners as partners in the Partnership shall cease. The Company hereby
    elects, effective as of the Effective Time and subject to the consummation
    of the transactions contemplated hereby, to reconstitute the Partnership, to
    continue as the general partner of the Partnership and to continue the
    Partnership and its business."
 
3.  AMENDMENT TO SECTION 1.4(B).  Section 1.4(b) of the Merger Agreement is
    hereby amended in its entirety to read, as of the date hereof, as follows:
 
   "(b) The Articles of Incorporation (as may be amended by the Articles of
    Merger) and the Bylaws of the Company and IWL as in effect immediately prior
    to the Effective Time as to the Company Merger and the IWL Merger,
    respectively, shall be the Articles of Incorporation and Bylaws of the
    Company and IWL, respectively, each as a Surviving Corporation, until
    thereafter amended."
 
4.  AMENDMENT TO SECTION 1.6(A)(I).  Section 1.6(a)(i) of the Merger Agreement
    is hereby amended in its entirety to read, as of the date hereof, as
    follows:
 
   "(i) Each share of the common stock, par value $.01 per share (the "IWL
    Common Stock"), of IWL issued and outstanding immediately before the
    Effective Time (other than those held in the treasury of IWL) and all rights
    in respect thereof shall at the Effective Time, without any action on the
    part of
 
                                       2
<PAGE>
    any holder thereof, forthwith cease to exist and be converted into and
    become exchangeable for that number of shares of Holdings Common Stock set
    forth on Exhibit 1.6(a) attached hereto (the "IWL Merger Consideration" and
    such ratio of IWL Common Stock to Holdings Common Stock being herein
    referred to as the "IWL Exchange Ratio").
 
5.  AMENDMENT TO SECTION 1.6(A)(IV).  Section 1.6(a)(iv) of the Merger Agreement
    is hereby amended in its entirety to read, as of the date hereof, as
    follows:
 
   "(iv) Each one percent (1%) of the Partnership Interests issued and
    outstanding immediately before the Effective Time and all rights in respect
    thereof shall, upon execution and delivery to Holdings by the holder thereof
    of the Contribution Agreement with respect thereto and without any further
    action on the part of the holder thereof, forthwith be exchanged for that
    number of shares of Holdings Common Stock set forth on Exhibit 1.6(a)
    attached hereto (the "Interest Exchange Consideration")."
 
6.  AMENDMENT TO EXHIBIT 1.6(A).  Exhibit 1.6(a) to the Merger Agreement, titled
    "COMPANY MERGER CONSIDERATION AND INTEREST EXCHANGE CONSIDERATION," is
    hereby deleted in its entirety and, as of the date hereof, replaced with
    Exhibit 1.6(a), titled "COMPANY MERGER CONSIDERATION, INTEREST EXCHANGE
    CONSIDERATION AND IWL MERGER CONSIDERATION," attached to this Amendment and
    made a part hereof.
 
7.  AMENDMENT TO SECTION 1.6(F).  Section 1.6(f) of the Merger Agreement is
    hereby amended in its entirety to read, as of the date hereof, as follows:
 
   "(f) FRACTIONAL SHARES.  No fraction of a share of Holdings Common Stock will
    be issued, but in lieu thereof each holder of shares of IWL Common Stock,
    each holder of shares of Company Common Stock and each holder of Partnership
    Interests who would otherwise be entitled to a fraction of a share of
    Holdings Common Stock (after aggregating all fractional shares of Holdings
    Common Stock to be received by such holder) shall be entitled to receive
    from Holdings a whole share of Holdings Common Stock."
 
8.  AMENDMENT TO SECTION 1.6(G)(I)(B).  Section 1.6(g)(i)(B) of the Merger
    Agreement is hereby amended in its entirety to read, as of the date hereof,
    as follows:
 
   "(B) the exercise price per share of Holdings Common Stock for each
    particular Holdings Option shall be equal to, respectively, (x) the exercise
    price per share under the Converted Option divided by (y) the IWL Exchange
    Ratio (if the Converted Option related to IWL Common Stock) or the Company
    Exchange Ratio (if the Converted Option related to the Company Common
    Stock), each of which shall be rounded up to the nearest whole cent."
 
9.  AMENDMENT TO SECTION 1.6(I).  Section 1.6(i) of the Merger Agreement is
    hereby amended in its entirety to read, as of the date hereof, as follows:
 
   "(i) MAXIMUM SHARES ISSUABLE.  Notwithstanding anything to the contrary
    contained herein, the maximum number of shares of Holdings Common Stock
    issuable upon the conversion of shares of Company Common Stock hereunder and
    the Interest Exchange and upon the exercise of Holdings Options that are the
    result of Converted Options related to Company Common Stock that are assumed
    by Holdings hereunder is 25,277,816 shares of Holdings Common Stock."
 
10. AMENDMENTS TO ARTICLE VI.  Article VI of the Merger Agreement, titled
    "CONDITIONS TO THE MERGERS AND THE INTEREST EXCHANGE," is hereby amended as
    set forth in this Section 10 of this Amendment. First, the parties hereby
    agree that the Requisite Regulatory Approvals referred to in Section 6.1(c)
    of the Merger Agreement shall, with respect to any approvals the parties are
    seeking to obtain from the FCC and state public utility commissions, include
    any approvals required to be obtained from the FCC and the state public
    utility commissions or other authority which governs the provision of
    telecommunications services in the States of Texas, Louisiana, Arkansas and
    Oklahoma and shall not include the approvals of any other state public
    utility commissions (such other approvals hereby being deemed to be
    immaterial Consents for purposes of Section 6.1(c) of the Merger Agreement
    and the term
 
                                       3
<PAGE>
    "Requisite Regulatory Approvals" to include only those required to be
    obtained by this Amendment). Second, the conditions set forth in Sections
    6.1(g), 6.2(b), (e), (f), (g), (h) and (j) of the Merger Agreement shall no
    longer be conditions to the obligations of the Company and the Partnership
    to consummate and effect the Merger Agreement and the transactions
    contemplated thereby; the parties who are required to perform such
    conditions shall still be required to perform such conditions (including
    without limitation executing and delivering any documents or instruments
    required thereby), provided that any failure of any party to so perform any
    such condition shall no longer excuse the Company or the Partnership from
    their respective obligations to consummate and effect the Merger Agreement
    and the transactions contemplated thereby. Third, the conditions set forth
    in Sections 6.1 (g), 6.3(b), (c) (other than the consent of Bank One Texas,
    N.A.), (d), (g), (h) and (i) of the Merger Agreement shall no longer be
    conditions to the obligations of IWL and the Merger Subsidiaries to
    consummate and effect the Merger Agreement and the transactions contemplated
    thereby; the parties who are required to perform such conditions shall still
    be required to perform such conditions (including without limitation
    executing and delivering any documents or instruments required thereby),
    provided that any failure of any party to so perform any such condition
    shall no longer excuse IWL and the Merger Subsidiaries from their respective
    obligations to consummate and effect the Merger Agreement and the
    transactions contemplated thereby. Fourth, the parties hereto agree that
    neither an increase or decrease in the price of the shares of IWL Common
    Stock as reported on the NASDAQ National Market System nor any litigation
    arising therefrom or as a result of the modification of the exchange ratio
    in this amendment shall ever be deemed to be an event that has a Material
    Adverse Effect on any of the parties to the Merger Agreement. Finally, the
    Company and the Partnership hereby agree that the modifications of the
    Company Exchange Ratio and the Interest Exchange Consideration made to the
    Merger Agreement in this Amendment address and take into account all factors
    of which they are aware, including, but not limited to, IWL's failure to
    meet earnings or income projections or models, that could be deemed to be or
    give rise to a Material Adverse Effect, including any Material Adverse
    Effect that could be deemed to arise from any representation or warranty of
    IWL not being true and correct as of the date hereof or at the Effective
    Time or any failure of IWL to perform and comply with all covenants,
    obligations and conditions required to be performed and complied with by it
    as of the Effective Time.
 
11. AMENDMENT TO SECTION 6.3(J).  Section 6.3(j) of the Merger Agreement is
    hereby amended in its entirety to read, as of the date hereof, as follows:
 
   "(j) CONTRIBUTION AGREEMENTS.  The General Partner and Limited Partners
    holding, in the aggregate, at least 80% of the limited Partnership Interests
    in the Partnership each shall have executed and delivered to Holdings a
    Contribution Agreement in respect of such Partner's Partnership Interest
    (and shall not have withdrawn such contribution), shall have consented to
    the transfers of Partnership Interests contemplated by the Interest Exchange
    and shall have consented to the substitution of the Company as the new
    General Partner of the Partnership and of Holdings as the new limited
    partner of the Partnership."
 
12. AMENDMENTS TO SECTION 7.1.  Sections 7.1(f), (g), (h) and (i) of the Merger
    Agreement are each hereby deleted in their entirety and new Sections 7.1(f)
    and (g) are hereby added to the Merger Agreement to read, as of the date
    hereof, as follows:
 
   "(f) by IWL (i) if the Board of Directors or any committee of the Board of
    Directors of the Company or the General Partner shall withdraw or modify in
    any adverse manner its approval or recommendation of this Agreement or the
    Mergers or the Interest Exchange; (ii) (A) if any of the required approvals
    of the shareholders or Partners, as the case may be, of the Company and the
    Partnership, as the case may be, shall fail to have been obtained at a duly
    held shareholders or Partners' meeting, as the case may be, of the Company
    or the Partnership, including any adjournments thereof, or (B) if the
    Partnership Interest of the General Partner and at least 80% of the
    Partnership Interests of the Limited Partners are not properly tendered in
    the Interest Exchange without being withdrawn; (iii) if
 
                                       4
<PAGE>
    the required approval of the shareholders of IWL shall fail to have been
    obtained at a duly held shareholders meeting of IWL, including any
    adjournments thereof; or (iv) prior to the approval of this Agreement by the
    shareholders of IWL upon two business days' prior notice to the Company and
    the Partnership, if, as a result of an Acquisition Proposal received by IWL
    from a Person other than a party to this Agreement or any of its affiliates,
    the Board of Directors of IWL determines in good faith, on the basis of oral
    or written advice of outside counsel that their fiduciary obligations under
    applicable law require that such Acquisition Proposal be accepted, provided
    however, that (A) the Board of Directors of IWL shall have concluded in good
    faith, after considering applicable provisions of law, on the basis of oral
    or written advice of outside counsel, that such action is necessary for the
    Board of Directors to act in a manner consistent with its fiduciary duties
    under applicable law and (B) prior to any such termination, IWL shall, and
    shall cause its respective financial and legal advisors to, negotiate with
    the Company and the Partnership to adjust the terms and conditions of this
    Agreement to provide the opportunity for IWL to proceed with the
    transactions contemplated hereby; or
 
   (g) by the Company and the Partnership (i) if the Board of Directors or any
    committee of the Board of Directors of IWL shall withdraw or modify in any
    adverse manner its approval or recommendation of this Agreement or the
    Mergers or the Interest Exchange; (ii) if the required approval of the
    shareholders of IWL shall fail to have been obtained at a duly held
    shareholders meeting of IWL, including any adjournments thereof; (iii) if
    any of the required approvals of the shareholders or Partners, as the case
    may be, of the Company and the Partnership, as the case may be, shall fail
    to have been obtained at a duly held shareholders or Partners' meeting, as
    the case may be, of the Company or the Partnership, including any
    adjournments thereof (or if the General Partner and Limited Partners
    holding, in the aggregate, at least 80% of the limited Partnership Interests
    in the Partnership shall have failed to execute and deliver to Holdings, and
    not withdraw, Contribution Agreements in respect of such Partners'
    Partnership Interests); or (iv) prior to the approval of this Agreement by
    the shareholders of the Company or the Partners, as the case may be, upon
    two business days' prior notice to IWL, if, as a result of an Acquisition
    Proposal received by the Company or the Partnership from a Person other than
    a party to this Agreement or any of its affiliates, the Board of Directors
    of the Company or the General Partner, as the case may be, determines in
    good faith, on the basis of oral or written advice of outside counsel, that
    their fiduciary obligations under applicable law require that such
    Acquisition Proposal be accepted, provided, however, that (A) the Board of
    Directors of the Company or the General Partner shall have concluded in good
    faith, after considering applicable provisions of law, on the basis of oral
    or written advice of outside counsel, that such action is necessary for the
    Board of Directors or the General Partner to act in a manner consistent with
    its fiduciary duties under applicable law and (B) prior to any such
    termination, the Company or the Partnership shall, and shall cause its
    respective financial and legal advisors to, negotiate with IWL to adjust the
    terms and conditions of this Agreement to provide the opportunity for the
    Company or the Partnership to proceed with the transactions contemplated
    hereby;
 
   provided further, however, that no termination shall be effective pursuant to
    Sections 7.1(f) or (g) under circumstances in which a termination fee is
    payable by IWL, on the one hand, or the Company and the Partnership, on the
    other hand, under Section 7.2(b) or (c) unless concurrently with such
    termination, such termination fee is paid in full by IWL, on the one hand,
    or the Company and the Partnership, on the other hand, in accordance with
    the provisions of Sections 7.2(b) or (c), as applicable."
 
13. AMENDMENTS TO SECTION 7.2.  Sections 7.2(b) and (c) of the Merger Agreement
    are each hereby amended in their entirety to read, as of the date hereof, as
    follows:
 
   "(b) If this Agreement (i) is terminated by IWL pursuant to Section 7.1(f)(i)
    or (ii) or by the Company or the Partnership pursuant to Section 7.1(g)(iii)
    or (iv), or (ii) is terminated as a result of the Company's or the
    Partnership's material breach of Section 5.2 hereof which is not cured
    within 30
 
                                       5
<PAGE>
    days after notice thereof to the Company or the Partnership, as appropriate,
    the Company shall pay to IWL a termination fee of $1,875,000 and the
    Partnership shall pay to IWL a termination fee of $625,000 (for an aggregate
    termination fee of $2.5 million), which shall be payable in cash at the date
    of termination.
 
   (c) If this Agreement (i) is terminated by the Company or the Partnership
    pursuant to Section 7.1(g)(i) or (ii) or by IWL pursuant to Section
    7.1(f)(iii) or (iv), or (ii) is terminated as a result of IWL's material
    breach of Section 5.2 hereof which is not cured within 30 days after notice
    thereof to IWL, IWL shall pay to the Company a termination fee of $1,875,000
    and shall pay to the Partnership a termination fee of $625,000 (for an
    aggregate termination fee of $2.5 million), which shall be payable in cash
    at the date of termination."
 
14. AMENDMENT TO DISCLOSURE SCHEDULES.  Section 2.3 of the Company Disclosure
    Schedule is hereby deleted in its entirety and, as of the date hereof,
    replaced with the Section 2.3 of the Company Disclosure Schedule attached to
    this Amendment and made a part hereof. Section 2A.3 of the Partnership
    Disclosure Schedule is hereby deleted in its entirety and, as of the date
    hereof, replaced with the Section 2A.3 of the Partnership Disclosure
    Schedule attached to this Amendment and made a part hereof. Section 3.2 of
    the IWL Disclosure Schedule is hereby deleted in its entirety and, as of the
    date hereof, replaced with Section 3.2 of the IWL Disclosure Schedule
    attached to this Amendment and made a part hereof.
 
15. TIMING OF TRANSACTIONS.  Notwithstanding anything to the contrary contained
    in the Merger Agreement, it is the intent of the parties hereto that on the
    Closing Date, the IWL Merger shall be deemed to be consummated first, the
    Interest Exchange shall be deemed to be consummated after consummation of
    the IWL Merger and prior to consummation of the Company Merger, and the
    Company Merger shall be deemed to be consummated after consummation of the
    IWL Merger and the Interest Exchange, and to the extent any provision of the
    Merger Agreement conflicts with or is inconsistent with this Section 15 of
    this Amendment, this Section 15 of this Amendment shall control and such
    provision of the Merger Agreement is hereby deemed to be modified to the
    extent necessary to make such provision consistent with this Section 15 of
    this Amendment.
 
16. CERTAIN WAIVERS.  Each of the parties hereby consents to the following
    actions (and to the extent any such action was taken prior to the date
    hereof, hereby waives any breach or violation of the Merger Agreement that
    may have resulted from the taking of such action), which consent and waiver
    shall be valid for all purposes under the Merger Agreement, including
    Sections 4.1 and 4.3 thereof: (i) the change by Holdings of its name from
    IWL Holdings Corp. to CapRock Communications Corp., the increase in
    Holdings' authorized capital stock to 220 million shares, of which 200
    million shares shall be common stock and 20 million shares shall be
    preferred stock, and any amendments to the Articles of Incorporation of
    Holdings required to effectuate such name change and increase in capital
    stock, (ii) the change by the Company of its name from CapRock
    Communications Corp. to CapRock Telecommunications Corp. and any amendments
    to the Articles of Incorporation of the Company required to effectuate such
    name change, (iii) the election by the Partnership to be taxed, effective as
    of January 1, 1998, as a corporation for federal income tax purposes, (iv)
    the incurrence of indebtedness by Holdings, the Company, the Partnership and
    IWL in an aggregate amount not to exceed $300,000,000 whether as obligor,
    co-obligor, guarantor or co-guarantor pursuant to that certain Rule 144A
    offering of notes being sold initially to various investment banks as
    initial purchasers to be described an Offering Memorandum (the "Offering
    Memorandum"), (v) the consummation by Holdings, the Company and/or the
    Partnership of the transactions described in the Offering Memorandum (and
    the execution and delivery of documents in connection therewith) with
    respect to the development and ownership of the proprietary software
    platform ("System") that is being jointly developed by the Company and
    Thompson Technology, Inc., a Texas corporation ("TTI") that is owned by
    David Thompson, including with respect to the continued funding and the
    future licensing and ownership of the System, (vi) the employment by
    Holdings and/or the Company of Kevin W.
 
                                       6
<PAGE>
    McAleer as Senior Vice President and Chief Financial Officer and the
    execution and delivery of an employment agreement with Mr. McAleer in
    connection therewith, and (vii) the sale by IWL of its digital radio
    telephone (DRT) products to one or more purchasers and on terms and
    conditions, satisfactory to IWL in its sole and unreviewable discretion (and
    take any foreclosure or related action in connection therewith). The consent
    and waiver granted hereby shall not extend to or be valid with respect to
    any other action taken or proposed to be taken by any party to the Merger
    Agreement which requires the consent of any other party or parties to the
    Merger Agreement.
 
17. NO OTHER CHANGES.  Except as expressly amended herein, the Merger Agreement
    shall remain unchanged and shall continue in full force and effect.
 
18. COUNTERPARTS; EFFECTIVENESS.  This Amendment may be executed in one or more
    counterparts, all of which will be considered one and the same agreement and
    will become effective when one or more counterparts have been signed by each
    of the parties and delivered to the other party, it being understood that
    all parties need not sign the same counterpart. Counterparts of this
    Amendment, and any signatures thereon, transmitted by facsimile will be
    deemed originals for all purposes.
 
19. GOVERNING LAW.  This Amendment shall be governed in all respects, including
    validity, interpretation and effect, by the laws of the Sate of Texas.
 
                                       7
<PAGE>
    IN WITNESS WHEREOF, Holdings, IWL, I-Sub, the Company, C-Sub, and the
Partnership have caused this Agreement to be signed by themselves or their duly
authorized respective officers or general partners, all as of the date first
written above.
 
<TABLE>
<S>                                           <C>        <C>
                                              CAPROCK COMMUNICATIONS CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                Chief Executive Officer
                                                         -----------------------------------------
 
                                              IWL COMMUNICATIONS, INCORPORATED
 
                                              By:                 /s/ IGNATIUS W. LEONARDS
                                                         -----------------------------------------
                                              Its:                       President
                                                         -----------------------------------------
 
                                              IWL ACQUISITION CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                Chief Executive Officer
                                                         -----------------------------------------
 
                                              CAPROCK TELECOMMUNICATIONS CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                       President
                                                         -----------------------------------------
 
                                              CAPROCK ACQUISITION CORP.
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                Chief Executive Officer
                                                         -----------------------------------------
 
                                              CAPROCK FIBER NETWORK, LTD.
 
                                              By:        CapRock Systems, Inc.
                                              Its:       General Partner
 
                                              By:                /s/ JERE W. THOMPSON, JR.
                                                         -----------------------------------------
                                              Its:                       President
                                                         -----------------------------------------
</TABLE>
 
                                       8
<PAGE>
                                                                     APPENDIX II
 
                                   [TO COME]
<PAGE>
                                                                    APPENDIX III
 
                           ARTICLES OF INCORPORATION
                                       OF
                               IWL HOLDINGS CORP.
 
    The undersigned natural person of the age of eighteen (18) years or more,
acting as an incorporator of a corporation under the Texas Business Corporation
Act, hereby adopts the following Articles of Incorporation for such corporation:
 
                                   ARTICLE I
                                      NAME
 
    The name of the corporation (the "Corporation") is IWL Holdings Corp.
 
                                   ARTICLE II
                                    DURATION
 
    The period of its duration is perpetual.
 
                                  ARTICLE III
                                    PURPOSE
 
    The purposes for which the Corporation is organized are to buy, sell, lease
and deal in goods, services, personal property and real property of every nature
and description, and to transact any or all lawful business for which
corporations may be incorporated under the Texas Business Corporation Act.
 
                                   ARTICLE IV
                                     SHARES
 
    A.  CAPITALIZATION.  The aggregate number of shares that the Corporation is
authorized to issue is One Hundred Ten Million (110,000,000) shares, consisting
of:
 
        1.  One Hundred Million (100,000,000) shares of Common Stock having a
    par value of One Cent ($.01) per share; and
 
        2.  Ten Million (10,000,000) shares of Preferred Stock having a par
    value of One Cent ($.01) per share.
 
    B.  SERIES OF SHARES ESTABLISHED BY BOARD OF DIRECTORS.
 
    The Preferred Stock may be issued from time to time in one (1) or more
series. The Board of Directors is hereby authorized, by filing a statement
pursuant to Article 2.13 of the Texas Business Corporation Act, to fix or
determine from time to time the designations, preferences, limitations and
relative rights including voting rights of the shares of any series to the same
extent that such designations, preferences, limitations, and relative rights
could be stated if fully set forth in the articles of incorporation, but subject
to and within the limitations set forth in the articles of incorporation. Such
authority includes, without limitation, the dividend rights, dividend rate,
conversion rights, voting rights, rights and terms of redemption (including
sinking fund provisions), redemption price or prices, and the liquidation
preferences of any wholly unissued series of Preferred Stock, and to establish
from time to time the number of shares constituting any such series and the
designation thereof, or any of them; and to increase or decrease the number of
shares of any series subsequent to the issuance of shares of that series, but
not below the number of shares of such series then issued. In case the number of
shares of any series shall be so decreased, the shares constituting such
decrease shall resume the status of authorized, but unissued shares
<PAGE>
of the class of shares from which such series was established that they had
prior to the adoption of the resolution originally fixing the number of shares
of such series.
 
    C.  COMMON STOCK.
 
        1.  Shares of Common Stock may be issued by the Corporation from time to
    time for such consideration as may lawfully be fixed by the Board of
    Directors.
 
        2.  The Common Stock shall be entitled to one (1) vote per share on all
    matters.
 
        3.  Subject to the prior rights and preferences of the Preferred Stock
    and subject to the provisions and conditions set forth in the foregoing
    Section B of this Article IV, or in any resolution or resolutions providing
    for the issue of a series of Preferred Stock, and to the extent permitted by
    the laws of the State of Texas, the holders of Common Stock shall be
    entitled to receive such cash dividends as may be declared and made payable
    by the Board of Directors.
 
        4.  After payment shall have been made in full to the holders of any
    series of Preferred Stock having preferred liquidation rights, upon any
    voluntary or involuntary liquidation, dissolution or winding up of the
    affairs of the Corporation, the remaining assets and funds of the
    Corporation shall be distributed among the holders of the Common Stock
    according to their respective shares.
 
                                   ARTICLE V
                          DENIAL OF PREEMPTIVE RIGHTS
 
    No holder of any shares of any class of stock of the Corporation shall,
solely as a result of being such holder, have any preemptive or preferential
right to receive, purchase or subscribe to (a) any unissued or treasury shares
of any class of stock (whether now or hereafter authorized) of the Corporation,
(b) any obligations or evidences of indebtedness or other securities of the
Corporation convertible into or exchangeable for, or carrying or accompanied by
any rights to receive, purchase or subscribe to any such unissued or treasury
shares, (c) any right of subscription to or to receive, or any warrant or option
for the purchase of, any thereof, or (d) any other securities that may be issued
or sold by the Corporation other than such (if any) as the Board of Directors of
the Corporation, in its sole and absolute discretion, may determine from time to
time. Notwithstanding the above, the Corporation may by contract grant
preemptive rights from time to time.
 
                                   ARTICLE VI
                            ACTION WITHOUT A MEETING
 
    Any action required by the Texas Business Corporation Act to be taken at any
annual or special meeting of shareholders, or any action that may be taken at
any annual or special meeting of shareholders, may be taken without a meeting,
without prior notice, and without a vote, if a consent or consents in writing,
setting forth the action so taken, shall be signed by the holder or holders of
shares having not less than the minimum number of votes that would be necessary
to take such action at a meeting at which the holders of all shares entitled to
vote on the action were present and voted.
 
                                  ARTICLE VII
                              NONCUMULATIVE VOTING
 
    Directors shall be elected by majority vote. No shareholder of the
Corporation shall have the right to cumulate his votes.
 
                                       2
<PAGE>
                                  ARTICLE VIII
                            COMMENCEMENT OF BUSINESS
 
    The Corporation will not commence business until it has received for the
issuance of its shares consideration of the value of One Thousand Dollars
($1,000.00) consisting of money, labor done, or property actually received.
 
                                   ARTICLE IX
                          REGISTERED OFFICE AND AGENT
 
    The street address of the initial registered office of the Corporation is
350 N. St. Paul, Suite 2900, Dallas, Texas 75201, and the name of its initial
registered agent at such address is CT Corporation System.
 
                                   ARTICLE X
                               INITIAL DIRECTORS
 
    The number of directors constituting the initial Board of Directors is five
(5), and the name and address of each person who is to serve as director until
the first annual meeting of the shareholders or until such person's successor is
elected and qualified are:
 
<TABLE>
<S>                   <C>
Ignatius W. Leonards  12000 Aerospace Avenue
                      Suite 200
                      Houston, Texas 77034
 
Byron M. Allen        12000 Aerospace Avenue
                      Suite 200
                      Houston, Texas 77034
 
Jere W. Thompson,     Two Galleria Tower, Suite 1925
Jr.                   13455 Noel Road
                      Dallas, Texas 75240-6638
 
Mark Langdale         Two Galleria Tower, Suite 1925
                      13455 Noel Road
                      Dallas, Texas 75240-6638
 
Tim Rogers            Two Galleria Tower, Suite 1925
                      13455 Noel Road
                      Dallas, Texas 75240-6638
</TABLE>
 
                                   ARTICLE XI
                   INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
    The directors and officers of the Corporation shall be indemnified by the
Corporation in a manner and to the maximum extent permitted by applicable state
or federal law as in effect from time to time.
 
                                  ARTICLE XII
                       LIMITATION OF DIRECTORS' LIABILITY
 
    A director of the Corporation shall not be liable to the Corporation or its
shareholders for monetary damages for an act or omission in the director's
capacity as a director, except that this Article shall not authorize the
elimination or limitation of the liability of a director to the extent the
director is found liable for:
 
                                       3
<PAGE>
        (1) a breach of the director's duty of loyalty to the Corporation or its
    shareholders;
 
        (2) an act or omission not in good faith that constitutes a breach of
    duty of the director to the Corporation or an act or omission that involves
    intentional misconduct or a knowing violation of the law;
 
        (3) a transaction from which the director received an improper benefit,
    whether or not the benefit resulted from an action taken within the scope of
    the director's office; or
 
        (4) an act or omission for which the liability of a director is
    expressly provided by an applicable statute.
 
                                  ARTICLE XIII
                     LIMITATION OF SHAREHOLDERS' LIABILITY
 
    A holder of shares, an owner of any beneficial interest in the shares, or a
subscriber for shares whose subscription has been accepted shall be under no
obligation to the Corporation or to its obligees with respect to:
 
        (1) such shares other than the obligation to pay the Corporation the
    full amount of the consideration fixed in compliance with Article 2.15 of
    the Texas Business Corporation Act, for which such shares were or are to be
    issued;
 
        (2) any contractual obligation of the Corporation on the basis of actual
    or constructive fraud, or a sham to perpetrate a fraud, unless the obligee
    demonstrates that the holder, owner, or subscriber caused the Corporation to
    be used for the purpose of perpetrating, and did perpetrate, an actual fraud
    on the obligee primarily for the direct personal benefit of the holder,
    owner, or subscriber; or
 
        (3) any contractual obligation of the Corporation on the basis of the
    failure of the Corporation to observe any corporate formality, including,
    without limitation:
 
            (a) the failure to comply with any requirement of the Texas Business
       Corporation Act or the Articles of Incorporation or Bylaws of the
       Corporation;
 
            (b) the failure to observe any requirement prescribed by the Texas
       Business Corporation Act or by the Articles of Incorporation or Bylaws
       for acts to be taken by the Corporation, its Board of Directors, or
       shareholders.
 
                                  ARTICLE XIV
                              VOTING REQUIREMENTS
 
    With respect to any matter for which the affirmative vote of the holders of
a specified portion of the shares entitled to vote is required by the Texas
Business Corporation Act, the act of the shareholders on that matter shall be
the affirmative vote of the holders of a majority of the shares entitled to vote
on that matter, rather than the affirmative vote otherwise required by the Texas
Business Corporation Act. In addition, with respect to any matter for which the
affirmative vote of the holders of a specified portion of the shares of any
class is required by the Texas Business Corporation Act, the act of the holders
of shares of that class on that matter shall be the affirmative vote of the
holders of a majority of shares of that class, rather than the affirmative vote
of the holders of shares of that class otherwise required by the Texas Business
Corporation Act.
 
                                       4
<PAGE>
                                   ARTICLE XV
                             ANTI-TAKEOVER STATUTE
 
    The Corporation hereby expressly elects to not be governed by Part Thirteen
(the Business Combination Law) of the Texas Business Corporation Act.
 
                                  ARTICLE XVI
                                  INCORPORATOR
 
    The name and address of the incorporator are:
 
                  Mark A. Kopidlansky
                  1445 Ross Avenue, Suite 4000
                  Dallas, Texas 75202-2790
 
    IN WITNESS WHEREOF, I have hereunto set my hand this the 2nd day of
February, 1998.
 
                                                  /s/ MARK A. KOPIDLANSKY
 
                                          --------------------------------------
 
                                            Mark A. Kopidlansky, Incorporator
 
                                       5
<PAGE>
                             ARTICLES OF AMENDMENT
                        TO THE ARTICLES OF INCORPORATION
                                       OF
                               IWL HOLDINGS CORP.
                              (THE "CORPORATION")
 
    Pursuant to the provisions of Article 4.04 of the Texas Business Corporation
Act, the Corporation adopts the following Articles of Amendment to its Articles
of Incorporation.
 
                                  ARTICLE ONE
 
    The name of the Corporation is IWL Holdings Corp.
 
                                  ARTICLE TWO
 
    The following amendment to the Articles of Incorporation was adopted by the
shareholders of the Corporation on February 16, 1998, so as to amend the name of
the Corporation.
 
    Article I of the Articles of Incorporation is hereby amended to read in its
entirety as follows:
 
                                   "ARTICLE I
                                      NAME
 
    The name of the Corporation is CapRock Communications Corp."
 
    Article IV of the Articles of Incorporation is hereby amended to read in its
entirety as follows:
 
                                  "ARTICLE IV
                                     SHARES
 
    A.  CAPITALIZATION.  The aggregate number of shares that the Corporation is
authorized to issue is Two Hundred Twenty Million (220,000,000) shares,
consisting of:
 
    1.  Two Hundred Million (200,000,000) shares of Common Stock having a par
value of One Cent ($.01) per share; and
 
    2.  Twenty Million (20,000,000) shares of Preferred Stock having a par value
of One Cent ($.01) per share.
 
    B.  SERIES OF SHARES ESTABLISHED BY BOARD OF DIRECTORS.
 
    The Preferred Stock may be issued from time to time in one (1) or more
series. The Board of Directors is hereby authorized, by filing a statement
pursuant to Article 2.13 of the Texas Business Corporation Act, to fix or
determine from time to time the designations, preferences, limitations and
relative rights including voting rights of the shares of any series to the same
extent that such designations, preferences, limitations, and relative rights
could be stated if fully set forth in the articles of incorporation, but subject
to and within the limitations set forth in the articles of incorporation. Such
authority includes, without limitation, the dividend rights, dividend rate,
conversion rights, voting rights, rights and terms of redemption (including
sinking fund provisions), redemption price or prices, and the liquidation
preferences of any wholly unissued series of Preferred Stock, and to establish
from time to time the number of shares constituting any such series and the
designation thereof, or any of them; and to increase or decrease the number of
shares of any series subsequent to the issuance of shares of that series, but
not below the number of shares of such series then issued. In case the number of
shares of any series shall be so decreased, the shares constituting such
decrease shall resume the status of authorized, but unissued shares of the class
of shares from which such series was established that they had prior to the
adoption of the resolution originally fixing the number of shares of such
series.
<PAGE>
    C.  COMMON STOCK.
 
    1.  Shares of Common Stock may be issued by the Corporation from time to
time for such consideration as may lawfully be fixed by the Board of Directors.
 
    2.  The Common Stock shall be entitled to one (1) vote per share on all
matters.
 
    3.  Subject to the prior rights and preferences of the Preferred Stock and
subject to the provisions and conditions set forth in the foregoing Section B of
this Article IV, or in any resolution or resolutions providing for the issue of
a series of Preferred Stock, and to the extent permitted by the laws of the
State of Texas, the holders of Common Stock shall be entitled to receive such
cash dividends as may be declared and made payable by the Board of Directors.
 
    4.  After payment shall have been made in full to the holders of any series
of Preferred Stock having preferred liquidation rights, upon any voluntary or
involuntary liquidation, dissolution or winding up of the affairs of the
Corporation, the remaining assets and funds of the Corporation shall be
distributed among the holders of the Common Stock according to their respective
shares."
 
                                 ARTICLE THREE
 
    The number of shares of the Corporation outstanding at the time of such
adoption was 1,000, and the number of shares entitled to vote thereon was 1,000.
 
                                  ARTICLE FOUR
 
    The holders of all shares outstanding and entitled to vote on said amendment
have signed a consent in writing adopting said amendment and any written notice
required by Article 9.10 has been given.
 
                                  ARTICLE FIVE
 
    The amendment does not involve any exchange, reclassification or
cancellation of issued shares of the Corporation.
 
                                  ARTICLE SIX
 
    The amendment does not effect a change in the amount of stated capital of
the Corporation.
 
<TABLE>
<S>                                           <C>        <C>
                                              IWL HOLDINGS CORP.
                                              A Texas Corporation
 
                                              By:                 /s/ IGNATIUS W. LEONARDS
                                                         -----------------------------------------
                                              Its:       President
</TABLE>
 
Dated: May 3, 1998
 
                                       2
<PAGE>
                                                                     APPENDIX IV
 
                                     BYLAWS
                                       OF
                               IWL HOLDINGS CORP.
 
<PAGE>
                                     BYLAWS
                                       OF
                               IWL HOLDINGS CORP.
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
<S>                   <C>                                                                                    <C>
ARTICLE I.            Offices.
 
1.01.                 Principal Office.
1.02.                 Other Offices.
 
ARTICLE II.           Meetings of Shareholders.
 
2.01.                 Place of Meetings.
2.02.                 Annual Meeting.
2.03.                 List of Shareholders.
2.04.                 Special Meetings.
2.05.                 Notice.
2.06.                 Quorum.
2.07.                 Voting on Matters Other than the Election of Directors.
2.08.                 Voting in the Election of Directors.
2.09.                 Voting Procedure.
2.10.                 Action Without a Meeting.
2.11.                 Telephone Meetings.
 
ARTICLE III.          Directors.
 
3.01.                 Management.
3.02.                 Number; Election.
3.03.                 Change in Number.
3.04.                 Election of Directors.
3.05.                 Place of Meetings.
3.06.                 First Meetings.
3.07.                 Regular Meetings.
3.08.                 Special Meetings.
3.09.                 Quorum.
3.10.                 Removal.
3.11.                 Vote of Directors to Fill Vacancy.
3.12.                 Vote of Shareholders to Fill Vacancy.
3.13.                 Action Without Meeting; Telephone Meetings.
3.14.                 Chairman of the Board.
3.15.                 Compensation.
3.16.                 Committees.
 
ARTICLE IV.           Notices.
 
4.01.                 Method.
4.02.                 Waiver.
 
ARTICLE V.            Officers.
 
5.01.                 Officers.
5.02.                 Election.
5.03.                 Compensation.
5.04.                 Removal and Vacancies.
</TABLE>
 
                                       i
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
5.05.                 Chief Executive Officer.
<S>                   <C>                                                                                    <C>
5.06.                 President.
5.07.                 Vice Presidents.
5.08.                 Secretary.
5.09.                 Assistant Secretaries.
5.10.                 Treasurer.
5.11.                 Assistant Treasurers.
 
ARTICLE VI.           Certificates Representing Shares.
 
6.01.                 Certificates.
6.02.                 Lost Certificates.
6.03.                 Transfer of Shares.
6.04.                 Registered Shareholders.
6.05.                 Fixing Record Date for Matters Other Than Consents to Action.
6.06.                 Fixing Record Date for Consents to Action.
6.07.                 Distribution Held in Suspense.
6.08.                 Joint Owners of Shares.
 
ARTICLE VII.          General Provisions.
 
7.01.                 Distributions.
7.02.                 Reserves.
7.03.                 Checks.
7.04.                 Fiscal Year.
7.05.                 Seal.
7.06.                 Indemnification.
7.07.                 Transactions with Directors and Officers.
7.08.                 Amendments.
7.09.                 Table of Contents; Headings.
</TABLE>
 
                                       ii
<PAGE>
                                     BYLAWS
                                       OF
                               IWL HOLDINGS CORP.
                              (THE "CORPORATION")
 
                                   ARTICLE I.
                                    OFFICES
 
    Section 1.01.  PRINCIPAL OFFICE.  The principal business office of the
Corporation shall be at 12000 Aerospace Avenue, Suite 200, Houston, Texas 77034.
 
    Section 1.02.  OTHER OFFICES.  The Corporation may also have offices at such
other places, both within and without the State of Texas, as the Board of
Directors may from time to time determine or the business of the Corporation may
require.
 
                                  ARTICLE II.
                            MEETINGS OF SHAREHOLDERS
 
    Section 2.01.  PLACE OF MEETINGS.  Meetings of shareholders for all purposes
may be held at such time and place, within or without the State of Texas, as
shall be stated in the notice of the meeting or in a duly executed waiver of
notice thereof.
 
    Section 2.02.  ANNUAL MEETING.  An annual meeting of the shareholders,
commencing with the year 1997, shall be held in each year on a date to be
determined by the Board of Directors, at which meeting the shareholders shall
elect a Board of Directors, and transact such other business as may properly be
brought before the meeting.
 
    Section 2.03.  LIST OF SHAREHOLDERS.  The officer or agent having charge of
the share transfer records shall make, at least ten (10) days before each
meeting of the shareholders, a complete list of the shareholders entitled to
vote at said meeting, arranged in alphabetical order with the address of and the
number of voting shares held by each, which list, for a period of ten (10) days
prior to such meeting, shall be kept on file at the registered office or
principal place of business of the Corporation and shall be subject to
inspection by any shareholder at any time during usual business hours. Such list
shall be produced and kept open at the time and place of the meeting during the
whole time thereof, and shall be subject to the inspection of any shareholder
who may be present. The original share transfer records shall be prima facie
evidence as to the shareholders who are entitled to examine such list or
transfer records or to vote at any such meeting of shareholders.
 
    Section 2.04.  SPECIAL MEETINGS.  Special meetings of the shareholders, for
any purpose or purposes, unless otherwise prescribed by statute or by the
Articles of Incorporation or by these Bylaws, may be called by the Chief
Executive Officer, the President, the Board of Directors, or the holders of not
less than ten percent (10%) of all shares entitled to vote at the meetings.
Business transacted at all special meetings shall be confined to the purposes
stated in the notice of the meeting.
 
    Section 2.05.  NOTICE.  Written or printed notice stating the place, day and
hour of the meeting, and, in case of a special meeting, the purpose or purposes
for which the meeting is called, shall be delivered not less than ten (10) nor
more than sixty (60) days before the date of the meeting, either personally or
by mail by or at the direction of the Chief Executive Officer, the President,
the Secretary or the officer or person calling the meeting, to each shareholder
entitled to vote at the meeting; provided, however, in the event of a merger or
consolidation, such notice shall be delivered not less than twenty (20) days
before the meeting.
 
    Section 2.06.  QUORUM.  Unless otherwise provided in the Articles of
Incorporation, a quorum shall be present at a meeting of shareholders if the
holders of a majority of the shares entitled to vote are
 
                                       1
<PAGE>
represented at the meeting in person or by proxy. Unless otherwise provided in
the Articles of Incorporation or these Bylaws, once a quorum is present at a
meeting of shareholders, the shareholders represented in person or by proxy at
the meeting may conduct such business as may be properly brought before the
meeting until it is adjourned, and the subsequent withdrawal from the meeting of
any shareholder or the refusal of any shareholder represented in person or by
proxy to vote shall not affect the presence of a quorum at the meeting. Unless
otherwise provided in the Articles of Incorporation, the shareholders
represented in person or by proxy at a meeting of shareholders at which a quorum
is not present may adjourn the meeting until such time and to such place as may
be determined by a vote of the holders of a majority of the shares represented
in person or by proxy at that meeting.
 
    Section 2.07.  VOTING ON MATTERS OTHER THAN THE ELECTION OF DIRECTORS.  With
respect to any matter other than the election of directors or a matter for which
the affirmative vote of the holders of a specified portion of the shares
entitled to vote is required by law, the affirmative vote of the holders of a
majority of the shares entitled to vote on that matter and represented in person
or by proxy at a meeting of shareholders at which a quorum is present shall be
the act of the shareholders unless otherwise provided in the Articles of
Incorporation or these Bylaws.
 
    Section 2.08.  VOTING IN THE ELECTION OF DIRECTORS.  Directors shall be
elected by a plurality of the votes cast by the holders of shares entitled to
vote in the election of directors at a meeting of shareholders at which a quorum
is present unless otherwise provided in the Articles of Incorporation or these
Bylaws.
 
    Section 2.09.  VOTING PROCEDURE.  Each outstanding share of common stock
shall be entitled to one (1) vote on each matter submitted to a vote at a
meeting of shareholders, except to the extent that the voting rights of the
shares of any class or classes are limited or denied by the Articles of
Incorporation. At any meeting of the shareholders, every shareholder having the
right to vote shall be entitled to vote either in person or by proxy executed in
writing subscribed by the shareholder. A telegram, telex, cablegram or similar
transmission by the shareholder, or a photographic, photostatic, facsimile or
similar reproduction of a writing executed by the shareholder shall be treated
as an execution in writing for purposes of this section. No proxy shall be valid
after eleven (11) months from the date of its execution, unless otherwise
provided in the proxy. Each proxy shall be revocable unless the proxy form
conspicuously states that the proxy is irrevocable and the proxy is coupled with
an interest.
 
    Section 2.10.  ACTION WITHOUT A MEETING.  Except as otherwise provided
below, any action required or permitted to be taken at a meeting of the
shareholders of the Corporation may be taken without a meeting if a consent in
writing setting forth the action so taken shall be signed by all of the
shareholders entitled to vote with respect to the subject matter thereof, and
such consent shall have the same force and effect as a unanimous vote of the
shareholders.
 
    The Articles of Incorporation may provide that any action required by the
Texas Business Corporation Act to be taken at any annual or special meeting of
shareholders, or any action that may be taken at any annual or special meeting
of shareholders, may be taken without a meeting, without prior notice, and
without a vote, if a consent or consents in writing, setting forth the action so
taken, shall be signed by the holder or holders of shares having not less than
the minimum number of votes that would be necessary to take such action at a
meeting at which the holders of all shares entitled to vote on the action were
present and voted. If the Articles of Incorporation make such a provision, then
such written consent shall bear the date of signature of each shareholder who
signs the consent. No written consent shall be effective to take the action that
is the subject of the consent unless, within sixty (60) days after the date of
the earliest dated consent delivered to the Corporation in the manner required
by the Texas Business Corporation Act, a consent or consents signed by the
holder or holders of shares having not less than the minimum number of votes
that would be necessary to take the action that is the subject of the consent
are delivered to the Corporation by delivery to its registered office, its
principal place of business, or an officer or agent of the Corporation having
custody of the books in which proceedings of meetings of shareholders are
recorded. Delivery shall be by hand or certified or registered mail, return
receipt requested. Delivery to the
 
                                       2
<PAGE>
Corporation's principal place of business shall be addressed to the president or
principal executive officer of the Corporation.
 
    A telegram, telex, cablegram, or similar transmission by a shareholder, or a
photographic, photostatic, facsimile or similar reproduction of a writing signed
by a shareholder shall be regarded as signed by the shareholder for purposes of
this section. Prompt notice of the taking of any action by shareholders without
a meeting by less than unanimous written consent shall be given to those
shareholders who did not consent in writing to the action.
 
    Section 2.11.  TELEPHONE MEETINGS.  Subject to applicable notice provisions
and unless otherwise restricted by the Articles of Incorporation, shareholders
may participate in and hold a meeting by means of conference telephone or
similar communications equipment by means of which all persons participating in
the meeting can hear each other, and participation in such meeting shall
constitute presence in person at such meeting, except where a person's
participation is for the express purpose of objecting to the transaction of any
business on the ground that the meeting is not lawfully called or convened.
 
                                  ARTICLE III.
                                   DIRECTORS
 
    Section 3.01.  MANAGEMENT.  The powers of the Corporation shall be exercised
by or under the authority of, and the business affairs of the Corporation shall
be managed under the direction of the Board of Directors that may exercise all
such powers of the Corporation and do all such lawful acts and things as are not
by statute or by the Articles of Incorporation or by these Bylaws directed or
required to be exercised or done by the shareholders. The Board of Directors
shall keep regular minutes of its proceedings.
 
    Section 3.02.  NUMBER; ELECTION.  The directors of the Corporation shall
consist of not less than one (1) director, as determined from time to time by
resolution of the shareholders or the Board of Directors of the Corporation.
Directors need not be shareholders or residents of the State of Texas. The
directors shall be elected at the annual meeting of the shareholders by the
holders of shares entitled to vote in the election of directors and, except as
hereinafter provided, each director elected shall hold office for the term for
which such director is elected and until such director's successor shall have
been elected and shall qualify.
 
    Section 3.03.  CHANGE IN NUMBER.  The number of directors may be increased
or decreased from time to time by resolution of the shareholders or the Board of
Directors of the Corporation, but no decrease shall have the effect of
shortening the term of any incumbent director.
 
    Section 3.04.  ELECTION OF DIRECTORS.  Directors shall be elected by a
plurality of the votes cast by the holders of shares entitled to vote in the
election of directors at a meeting of shareholders at which a quorum is present
unless otherwise provided in the Articles of Incorporation or these Bylaws. At
every election of directors, each shareholder shall have the right to vote in
person or by proxy the number of voting shares owned by such shareholder for as
many persons as there are directors to be elected and for whose election such
shareholder has a right to vote. Cumulative voting shall be prohibited.
 
    Section 3.05.  PLACE OF MEETINGS.  The directors of the Corporation may hold
their meetings, both regular and special, either inside or outside of the State
of Texas.
 
    Section 3.06.  FIRST MEETINGS.  The first meeting of each newly elected
Board shall be held without further notice immediately following the annual
meeting of shareholders, and at the same place, unless by unanimous consent of
the directors then elected and serving, such time or place shall be changed.
 
    Section 3.07.  REGULAR MEETINGS.  Regular meetings of the Board of Directors
may be held without notice at such time and place as shall from time to time be
determined by the Board.
 
                                       3
<PAGE>
    Section 3.08.  SPECIAL MEETINGS.  Special meetings of the Board of Directors
may be called by the Chief Executive Officer or the President on three (3) days'
notice to each director, either personally or by mail or by telegram and shall
be called by the Chief Executive Officer or the President or any officer in like
manner and on like notice on the written request of two (2) or more of the
directors. Except as may be otherwise expressly provided by law or by the
Articles of Incorporation or by these Bylaws, neither the business to be
transacted at nor the purpose of any special meeting need be specified in a
notice or waiver of notice of such meeting.
 
    Section 3.09.  QUORUM.  At all meetings of the Board of Directors, the
presence of a majority of the number of the directors fixed by or in the manner
provided in the Articles of Incorporation or these Bylaws shall constitute a
quorum for the transaction of business unless a greater number is required by
law, the Articles of Incorporation or the Bylaws. The act of a majority of the
directors present at any meeting at which there is a quorum shall be the act of
the Board of Directors unless the act of a greater number is required by law,
the Articles of Incorporation or by these Bylaws. If a quorum shall not be
present at any meeting of directors, the directors present thereat may adjourn
the meeting from time to time, without notice other than announcement at the
meeting, until a quorum shall be present.
 
    Section 3.10.  REMOVAL.  At any meeting of the shareholders called expressly
for such purpose, any director or the entire Board of Directors may be removed
either with or without cause by the affirmative vote of the holders of a
majority of the shares entitled to vote at an election of such directors.
 
    Section 3.11.  VOTE OF DIRECTORS TO FILL VACANCY.  Any vacancy occurring in
the initial Board of Directors before the issuance of shares may be filled by
the affirmative vote or written consent of a majority of the incorporators or by
the affirmative vote of a majority of the remaining directors though less than a
quorum of the Board of Directors. Any vacancy subsequently occurring in the
Board of Directors after the issuance of shares may be filled in accordance with
Section 3.12 of this Article III or may be filled by the affirmative vote of a
majority of the remaining directors though less than a quorum of the Board of
Directors. A director elected to fill a vacancy shall be elected for the
unexpired term of such director's predecessor in office. A directorship to be
filled by reason of an increase in the number of directors may be filled in
accordance with Section 3.12 of this Article III or, subject only to any
limitations then contained in the Texas Business Corporation Act relating to the
number of directors that may be elected by the Board of Directors to fill
newly-created directorships, may be filled by the Board of Directors for a term
of office continuing only until the next election of one (1) or more directors
by the shareholders.
 
    Section 3.12.  VOTE OF SHAREHOLDERS TO FILL VACANCY.  Any vacancy occurring
in the Board of Directors or any directorship to be filled by reason of an
increase in the number of directors may be filled by election at any annual or
special meeting of shareholders called for that purpose.
 
    Section 3.13.  ACTION WITHOUT MEETING; TELEPHONE MEETINGS.  Unless otherwise
restricted by the Articles of Incorporation or these Bylaws, any action required
or permitted to be taken at a meeting of the Board of Directors or of any
committee designated by the Board of Directors may be taken without a meeting if
a consent in writing, setting forth the action so taken is signed by all the
members of the Board of Directors or committee, as the case may be. Such consent
shall have the same force and effect as a unanimous vote at a meeting and may be
stated as such in any document or instrument filed with the Secretary of State.
Subject to applicable notice provisions and unless otherwise restricted by the
Articles of Incorporation or these Bylaws, members of the Board of Directors or
members of any committee designated by the Board of Directors may participate in
and hold a meeting by means of conference telephone or similar communications
equipment by means of which all persons participating in the meeting can hear
each other, and participation in such meeting shall constitute presence in
person at such meeting, except where a person participates in the meeting for
the express purpose of objecting to the transaction of any business on the
ground that the meeting is not lawfully called or convened.
 
    Section 3.14.  CHAIR OF THE BOARD.  The Board of Directors may elect a Chair
of the Board to preside at their meetings and perform such other duties as the
Board may from time to time assign to the Chair.
 
                                       4
<PAGE>
    Section 3.15.  COMPENSATION.  Directors, as such, shall not receive any
stated salary for their services, but, by resolution of the Board a fixed sum
and expenses of attendance, if any, may be allowed for attendance at each
regular or special meeting of the Board; provided that nothing herein contained
shall be construed to preclude any director from serving the Corporation in any
other capacity and receiving compensation therefor. Members of any committee
designated by the Board may, by resolution of the Board of Directors, be allowed
like compensation for attending committee meetings.
 
    Section 3.16.  COMMITTEES.  The Board of Directors, by resolution adopted by
a majority of the full Board of Directors, may designate from among its members
one (1) or more committees, each of which shall be comprised of one (1) or more
of its members and may designate one (1) or more of its members as alternate
members of any committee, who may, subject to any limitations imposed by the
Board of Directors, replace absent or disqualified members at any meeting of
that committee. Any such committee, except to the extent provided in said
resolution, shall have and may exercise all of the authority of the Board of
Directors in the management of the business and affairs of the Corporation,
except where action of the full Board of Directors is required by law or by the
Articles of Incorporation. Any member of the committees may be removed by the
Board of Directors by the affirmative vote of a majority of the Board of
Directors, whenever in its judgment the best interests of the Corporation will
be served thereby. The committees shall keep regular minutes of their
proceedings and report the same to the Board of Directors when required.
 
                                  ARTICLE IV.
                                    NOTICES
 
    Section 4.01.  METHOD.  Whenever by statute, the Articles of Incorporation
or these Bylaws, notice is required to be given to any director or shareholder,
and no provision is made as to how such notice shall be given, it shall not be
construed to mean personal notice, but any such notice may be given in writing,
either personally or by mail, postage prepaid, addressed to such director or
shareholder at such address as appears on the share transfer records of the
Corporation or in any other method permitted by law. Any notice required or
permitted to be given by mail shall be deemed to be given at the time when the
same shall be thus deposited in the United States mail as aforesaid.
 
    Section 4.02.  WAIVER.  Whenever any notice is required to be given to any
shareholder or director of the Corporation by law, the Articles of Incorporation
or these Bylaws, a waiver thereof in writing signed by the person or persons
entitled to such notice, whether before or after the time stated in such notice,
shall be deemed equivalent to the giving of such notice. Attendance of a
shareholder or director at a meeting shall constitute a waiver of notice of such
meeting, except where a shareholder or director attends for the express purpose
of objecting to the transaction of any business on the ground that the meeting
is not lawfully called or convened. Consent in writing by a shareholder or
director to any action taken or resolution adopted by the shareholders or
directors of the Corporation shall constitute a waiver of any and all notices
required to be given in connection with such action or resolution.
 
                                   ARTICLE V.
                                    OFFICERS
 
    Section 5.01.  OFFICERS.  The officers of the Corporation shall be elected
by the Board of Directors and shall be at least a President and a Secretary. The
Board of Directors may also choose a Chair of the Board, a Chief Executive
Officer, a Treasurer, and one (1) or more Executive Vice Presidents, Senior Vice
Presidents, Vice Presidents, Assistant Vice Presidents, Assistant Secretaries,
Assistant Treasurers, or such other officers as the Board of Directors shall
elect. Any two or more offices may be held by the same person.
 
                                       5
<PAGE>
    Section 5.02.  ELECTION.  The Board of Directors at its first meeting after
each annual meeting of shareholders shall choose a President and a Secretary and
may choose a Chair of the Board, a Chief Executive Officer, a Treasurer and one
(1) or more Executive Vice Presidents, Senior Vice Presidents, Vice Presidents,
Assistant Vice Presidents, Assistant Secretaries or Assistant Treasurers, none
of whom need be a member of the Board of Directors, a shareholder or a resident
of the State of Texas. The Board of Directors may appoint such other officers
and agents as it shall deem necessary, who shall be appointed for such terms and
shall exercise such powers and perform such duties as shall be determined from
time to time by the Board of Directors.
 
    Section 5.03.  COMPENSATION.  The compensation of all officers and agents of
the Corporation shall be fixed by the Board of Directors.
 
    Section 5.04.  REMOVAL AND VACANCIES.  Each officer of the Corporation shall
hold office until such officer's successor is chosen and qualified in such
officer's stead or until such officer's death or until such officer's
resignation or removal from office. Any officer or agent or member of a
committee elected or appointed by the Board of Directors may be removed by a
majority of the members of the Board of Directors represented at a meeting of
the Board of Directors at which a quorum is represented, whenever in its
judgment the best interests of the Corporation will be served thereby; but such
removal shall be without prejudice to the contract rights, if any, of the person
so removed. If the office of any officer becomes vacant for any reason, the
vacancy may be filled by the Board of Directors.
 
    Section 5.05.  CHIEF EXECUTIVE OFFICER.  The Board of Directors may, but
shall not be required to, elect a Chief Executive Officer. If so elected, the
Chief Executive Officer shall preside at all meetings of the shareholders and
the Board of Directors unless the Board shall choose to elect a Chair of the
Board, in which event the Chief Executive Officer shall preside at shareholders'
and Board of Directors' meetings in the absence of the Chair of the Board of
Directors. The Chief Executive Officer shall have general and active management
of the business and affairs of the Corporation, shall see that all orders and
resolutions of the Board are carried into effect, and shall perform such other
duties as the Board of Directors shall prescribe. Such duties shall be performed
by the President of the Corporation if the Board of Directors does not elect a
Chief Executive Officer.
 
    Section 5.06.  PRESIDENT.  The President shall preside at all meetings of
the shareholders and the Board of Directors unless the Board shall choose to
elect a Chair of the Board or a Chief Executive Officer, in which event the
President shall preside at shareholders' and Board of Directors' meetings in the
absence of the Chair of the Board of Directors or the Chief Executive Officer,
as the case may be. The President shall have general and active management of
the day-to-day operations of the Corporation and such other duties as the Board
of Directors or the Chief Executive Officer shall prescribe.
 
    Section 5.07.  VICE PRESIDENTS.  Each Vice President shall have only such
powers and perform only such duties as the Board of Directors may from time to
time prescribe or as the Chief Executive Officer or the President may from time
to time delegate to such Vice President.
 
    Section 5.08.  SECRETARY.  The Secretary shall attend all sessions of the
Board of Directors and all meetings of the shareholders and record all votes and
the minutes of all proceedings in a book to be kept for that purpose and shall
perform like duties for the Executive Committee when required. The Secretary
shall give, or cause to be given, notice of all meetings of the share-holders
and special meetings of the Board of Directors, and shall perform such other
duties as may be prescribed by the Board of Directors or the Chief Executive
Officer or the President, under whose supervision the Secretary shall be. The
Secretary shall keep in safe custody the seal of the Corporation and affix the
same to any instrument requiring it, and, when so affixed, it shall be attested
by the Secretary's signature or by the signature of the Treasurer or an
Assistant Secretary.
 
                                       6
<PAGE>
    Section 5.09.  ASSISTANT SECRETARIES.  Each Assistant Secretary shall have
only such powers and perform only such duties as the Board of Directors may from
time to time prescribe or as the Chief Executive Officer or the President may
from time to time delegate.
 
    Section 5.10.  TREASURER.  The Treasurer shall have the custody of the
corporate funds and securities and shall keep full and accurate accounts of
receipts and disbursements of the Corporation and shall deposit all monies and
other valuable effects in the name and to the credit of the Corporation in such
depositories as may be designated by the Board of Directors. The Treasurer shall
disburse the funds of the Corporation as may be ordered by the Board of
Directors, taking proper vouchers for such disbursements, and shall render to
the Chief Executive Officer or the President and directors, at the regular
meetings of the Board, or whenever they may require it, an account of all the
Treasurer's transactions as Treasurer and of the financial condition of the
Corporation, and shall perform such other duties as the Board of Directors may
prescribe. If required by the Board of Directors, the Treasurer shall give the
Corporation a bond in such form in such sum, and with surety or sureties as
shall be satisfactory to the Board for the faithful performance of the duties of
the Treasurer's office and for the restoration to the Corporation, in case of
the Treasurer's death, resignation, retirement or removal from office, of all
books, papers, vouchers, money, and other property of whatever kind in the
Treasurer's possession or under the Treasurer's control belonging to the
Corporation.
 
    Section 5.11.  ASSISTANT TREASURERS.  Each Assistant Treasurer shall have
only such powers and perform only such duties as the Board of Directors may from
time to time prescribe.
 
                                  ARTICLE VI.
                        CERTIFICATES REPRESENTING SHARES
 
    Section 6.01.  CERTIFICATES.  Certificates in such form as may be determined
by the Board of Directors shall be delivered representing all shares to which
shareholders are entitled. Such certificates shall be consecutively numbered and
shall be entered in the books of the Corporation as they are issued. Each
certificate shall state on the face thereof the holder's name, the number and
class of shares, and the par value of such shares or a statement that such
shares are without par value. They shall be signed by the Chief Executive
Officer, the President or a Vice President and the Secretary or an Assistant
Secretary and may be sealed with the seal of the Corporation or a facsimile
thereof. If any certificate is countersigned by a transfer agent, or an
assistant transfer agent or registered by a registrar, other than the
Corporation or an employee of the Corporation, the signature of any such officer
may be facsimile. Shares may not be issued until the full amount of the
consideration, fixed as provided by law, has been paid.
 
    Section 6.02.  LOST CERTIFICATES.  The Board of Directors may direct a new
certificate representing shares to be issued in place of any certificate
theretofore issued by the Corporation alleged to have been lost or destroyed,
upon the making of an affidavit of that fact by the person claiming the
certificate to be lost or destroyed. When authorizing such issue of a new
certificate, the Board of Directors, in its discretion and as a condition
precedent to the issuance thereof, may require the owner of such lost or
destroyed certificate, or such owner's legal representative, to advertise the
same in such manner as it shall require and/or give the Corporation a bond in
such form, in such sum, and with such surety or sureties as it may direct as
indemnity against any claim that may be made against the Corporation with
respect to the certificate alleged to have been lost or destroyed.
 
    Section 6.03.  TRANSFER OF SHARES.  Except as is otherwise provided in these
Bylaws, shares of stock shall be transferable only on the books of the
Corporation by the holder thereof in person or by such holder's duly authorized
attorney. Upon surrender to the Corporation or the transfer agent of the
Corporation of a certificate representing shares duly endorsed or accompanied by
proper evidence of succession, assignment or authority to transfer, it shall be
the duty of the Corporation or the transfer agent
 
                                       7
<PAGE>
of the Corporation to issue a new certificate to the person entitled thereto,
cancel the old certificate and record the transaction upon its books.
 
    Section 6.04.  REGISTERED SHAREHOLDERS.  Unless otherwise provided by
statute, the Corporation may regard the person in whose name any shares issued
by the Corporation are registered in the share transfer records of the
Corporation at any particular time (including, without limitation as of a record
date fixed pursuant to Sections 6.05 and 6.06) as the owner of those shares at
that time for purposes of voting those shares, receiving distributions thereon
or notices in respect thereof, transferring those shares, exercising rights of
dissent with respect to those shares, exercising or waiving any preemptive right
with respect to those shares, entering into agreements with respect to those
shares in accordance with the Texas Business Corporation Act or giving proxies
with respect to those shares. Neither the Corporation nor any of its officers,
directors, employees or agents shall be liable for regarding that person as the
owner of those shares at that time for those purposes, regardless of whether
that person possesses a certificate for those shares.
 
    Section 6.05.  FIXING RECORD DATE FOR MATTERS OTHER THAN CONSENTS TO
ACTION.  For the purpose of determining shareholders entitled to notice of or to
vote at any meeting of shareholders or any adjournment thereof, or entitled to
receive a distribution by the Corporation (other than a distribution involving a
purchase or redemption by the Corporation of any of its own shares) or a share
dividend, or in order to make a determination of shareholders for any other
proper purpose (other than determining shareholders entitled to consent to
action by shareholders proposed to be taken without a meeting of shareholders),
the Board of Directors may provide that the share transfer records shall be
closed for a stated period but not to exceed, in any case, sixty (60) days. If
the share transfer records shall be closed for the purpose of determining
shareholders entitled to notice of or to vote at a meeting of shareholders, such
records shall be closed for at least ten (10) days immediately preceding such
meeting. In lieu of closing the share transfer records, the Board of Directors
may fix in advance a date as the record date for any such determination of
shareholders, such date in any case to be not more than sixty (60) days, and, in
the case of a meeting of shareholders, not less than ten (10) days, prior to the
date on which the particular action requiring such determination of shareholders
is to be taken. If the share transfer records are not closed and no record date
is fixed for the determination of shareholders entitled to notice of or to vote
at a meeting of shareholders, or shareholders entitled to receive a distribution
(other than a distribution involving a purchase or redemption by the Corporation
of any of its own shares) or a share dividend, the date on which such notice of
the meeting is mailed or the date on which the resolution of the Board of
Directors declaring such distribution or share dividend is adopted, as the case
may be, shall be the record date for such determination of shareholders. When a
determination of shareholders entitled to vote at any meeting of shareholders
has been made as provided in this Section, such determination shall apply to any
adjournment thereof, except where the determination has been made through the
closing of the share transfer records and the stated period of closing has
expired.
 
    Section 6.06.  FIXING RECORD DATE FOR CONSENTS TO ACTION.  Unless a record
date shall have previously been fixed or determined pursuant to this Article VI,
whenever action by shareholders is proposed to be taken by consent in writing
without a meeting of shareholders, the Board of Directors may fix a record date
for the purpose of determining shareholders entitled to consent to that action,
which record date shall not precede, and shall not be more than ten (10) days
after, the date upon which the resolution fixing the record date is adopted by
the Board of Directors. If no record date has been fixed by the Board of
Directors and the prior action of the Board of Directors is not required by the
Texas Business Corporation Act, the record date for determining shareholders
entitled to consent to action in writing without a meeting shall be the first
date on which a signed written consent setting forth the action taken or
proposed to be taken is delivered to the Corporation by delivery to its
registered office, its principal place of business, or an officer or agent of
the Corporation having custody of the books in which proceedings of meetings of
shareholders are recorded. Delivery shall be by hand or by certified or
registered mail, return receipt requested. Delivery to the Corporation's
principal place of business shall be addressed to the
 
                                       8
<PAGE>
President or the principal executive officer of the Corporation. If no record
date shall have been affixed by the Board of Directors and prior action of the
Board of Directors is required by statute, the record date for determining
shareholders entitled to consent to action in writing without a meeting shall be
at the close of business on the date on which the Board of Directors adopts
resolution taking such prior action.
 
    Section 6.07.  DISTRIBUTION HELD IN SUSPENSE.  Distributions made by the
Corporation, including those that were payable but not paid to a holder of
shares or to such holder's heirs, successors or assigns, and have been held in
suspense by the Corporation or were paid or delivered by it into an escrow
account or to a trustee or custodian, shall be payable by the Corporation,
escrow agent, trustee or custodian to the holder of the shares as of the record
date determined for that distribution as provided in Section 6.05, or to such
holder's heirs, successors or assigns.
 
    Section 6.08.  JOINT OWNERS OF SHARES.  When shares are registered on the
books of the Corporation in the names of two (2) or more persons as joint owners
with the right of survivorship, after the death of a joint owner and before the
time that the Corporation receives actual written notice that parties other than
the surviving joint owner or owners claim an interest in the shares or any
distributions thereon, the Corporation may record on its books and otherwise
effect the transfer of those shares to any person, firm, or Corporation
(including that surviving joint owner individually) and pay any distributions
made in respect of those shares, in each case as if the surviving joint owner or
owners were the absolute owners of the shares. The Corporation permitting such a
transfer by and making any distribution to such a surviving joint owner or
owners before the receipt of written notice from other parties claiming an
interest in those shares or distributions is discharged from all liability for
the transfer or payment so made; provided, however, that the discharge of the
Corporation from liability and the transfer of full legal and equitable title of
the shares in no way affects, reduces, or limits any cause of action existing in
favor of any owner of an interest in those shares or distributions against the
surviving owner or owners.
 
                                  ARTICLE VII.
                               GENERAL PROVISIONS
 
    Section 7.01.  DISTRIBUTIONS.  Distributions upon the outstanding shares of
the Corporation, subject to the provisions of the Articles of Incorporation, may
be declared by the Board of Directors at any regular or special meeting.
Distributions may be paid in cash, in property or in shares of the Corporation,
subject to the provisions of the statutes and the Articles of Incorporation.
 
    Section 7.02.  RESERVES.  There may be created by resolution of the Board of
Directors out of the surplus of the Corporation such reserve or reserves as the
directors from time to time, in their discretion, think proper to provide for
contingencies, or to equalize distributions, or to repair or maintain any
property of the Corporation, or for such other purposes as the Board of
Directors shall think beneficial to the Corporation, and the Board of Directors
may modify or abolish any such reserve in the manner in which it was created.
 
    Section 7.03.  CHECKS.  All checks or demands for money and notes of the
Corporation shall be signed by such officer or officers or such other person or
persons as the Board of Directors may from time to time designate.
 
    Section 7.04.  FISCAL YEAR.  The fiscal year of the Corporation shall be
fixed by resolution of the Board of Directors.
 
    Section 7.05.  SEAL.  The corporate seal shall be kept in the safe custody
of the Secretary of the Corporation and shall have inscribed thereon the name of
the Corporation and may be in such form as the Board of Directors may determine.
Said seal may be used by causing it or a facsimile thereof to be impressed or
affixed or reproduced or otherwise.
 
                                       9
<PAGE>
    Section 7.06.  INDEMNIFICATION.  The Corporation shall have the authority to
and shall indemnify and advance expenses to the directors, officers, employees,
agents of the Corporation or any other persons serving at the request of the
Corporation in such capacities in a manner and to the maximum extent permitted
by applicable state or federal law. The Corporation may purchase and maintain
liability insurance or make other arrangements for such obligations to the
extent permitted by the Texas Business Corporation Act.
 
    Section 7.07.  TRANSACTIONS WITH DIRECTORS AND OFFICERS.  No contract or
transaction between the Corporation and one (1) or more of its directors or
officers, or between the Corporation and any other Corporation, partnership,
association, or other organization in which one (1) or more of its directors or
officers are directors or officers or have a financial interest, shall be void
or voidable solely for this reason, solely because the director or officer is
present at or participates in the meeting of the Board of Directors or committee
thereof that authorizes the contract or transaction, or solely because his, her,
its or their votes are counted for such purpose, if:
 
        (1) The material facts as to such person's relationship or interest and
    as to the contract or transaction are disclosed or are known to the Board of
    Directors or the committee, and the Board of Directors or committee in good
    faith authorizes the contract or transaction by the affirmative vote of a
    majority of the disinterested directors, even though the disinterested
    directors be less than a quorum; or
 
        (2) The material facts as to such person's relationship or interest and
    as to the contract or transaction are disclosed or are known to the
    shareholders entitled to vote thereon, and the contract or transaction is
    specifically approved in good faith by vote of the shareholders; or
 
        (3) The contract or transaction is fair as to the Corporation as of the
    time it is authorized, approved or ratified by the Board of Directors, a
    committee thereof, or the shareholders.
 
Common or interested directors may be counted in determining the presence of a
quorum at a meeting of the Board of Directors or of a committee that authorizes
the contract or transaction.
 
    Section 7.08.  AMENDMENTS.  The Board of Directors may amend or repeal the
Bylaws of the Corporation or adopt new Bylaws, unless: (1) the Articles of
Incorporation or the Texas Business Corporation Act reserves the power
exclusively to the shareholders in whole or part; or (2) the shareholders in
amending, repealing or adopting a particular bylaw expressly provide that the
Board of Directors may not amend or repeal that bylaw. Unless the Articles of
Incorporation or a bylaw adopted by the shareholders provides otherwise as to
all or some portion of the Bylaws, the shareholders may amend, repeal or adopt
the Bylaws even though the Bylaws may also be amended, repealed or adopted by
the Board of Directors.
 
    Section 7.09.  TABLE OF CONTENTS; HEADINGS.  The Table of Contents and
headings used in these Bylaws have been inserted for convenience only and do not
constitute matters to be construed in interpretation.
 
                                       10
<PAGE>
                            CERTIFICATE BY SECRETARY
 
    The undersigned, being the Secretary of the Corporation, hereby certifies
that the foregoing code of Bylaws was duly adopted by the directors of said
Corporation effective on February 3, 1998.
 
                                          /s/ RICHARD H. ROBERSON
                                          --------------------------------------
 
                                          Secretary
 
                                       11
<PAGE>
                                                                      APPENDIX V
 
ART. 5.11  RIGHTS OF DISSENTING SHAREHOLDERS IN THE EVENT OF CERTAIN CORPORATE
           ACTIONS
 
    A. Any shareholder of a domestic corporation shall have the right to dissent
from any of the following corporate actions:
 
    (1) Any plan of merger to which the corporation is a party if shareholder
approval is required by Article 5.03 or 5.16 of this Act and the shareholder
holds shares of a class or series that was entitled to vote thereon as a class
or otherwise;
 
    (2) Any sale, lease, exchange or other disposition (not including any
pledge, mortgage, deed of trust or trust indenture unless otherwise provided in
the articles of incorporation) of all, or substantially all, the property and
assets, with or without good will, of a corporation if special authorization of
the shareholders is required by this Act and the shareholders hold shares of a
class or series that was entitled to vote thereon as a class or otherwise;
 
    (3) Any plan of exchange pursuant to Article 5.02 of this Act in which the
shares of the corporation of the class or series held by the shareholder are to
be acquired.
 
    B.  Notwithstanding the provisions of Section A of this Article, a
shareholder shall not have the right to dissent from any plan of merger in which
there is a single surviving or new domestic or foreign corporation, or from any
plan of exchange, if:
 
    (1) the shares held by the shareholder are part of a class or series, shares
of which are on the record date fixed to determine the shareholders entitled to
vote on the plan of merger or plan of exchange:
 
    (a) listed on a national securities exchange;
 
    (b) listed on the Nasdaq Stock Market (or successor quotation system) or
designated as a national market security on an interdealer quotation system by
the National Association of Securities Dealers, Inc., or successor entity; or
 
    (c) held of record by not less than 2,000 holders;
 
    (2) the shareholder is not required by the terms of the plan of merger or
plan of exchange to accept for the shareholder's shares any consideration that
is different than the consideration (other than cash in lieu of fractional
shares that the shareholder would otherwise be entitled to receive) to be
provided to any other holder of shares of the same class or series of shares
held by such shareholder; and
 
    (3) the shareholder is not required by the terms of the plan of merger or
the plan of exchange to accept for the shareholder's shares any consideration
other than:
 
    (a) shares of a domestic or foreign corporation that, immediately after the
effective time of the merger or exchange, will be part of a class or series,
shares of which are:
 
    (i) listed, or authorized for listing upon official notice of issuance, on a
national securities exchange;
 
    (ii) approved for quotation as a national market security on an interdealer
quotation system by the National Association of Securities Dealers, Inc., or
successor entity; or
 
   (iii) held of record by not less than 2,000 holders;
 
    (b) cash in lieu of fractional shares otherwise entitled to be received; or
 
    (c) any combination of the securities and cash described in Subdivisions (a)
and (b) of this subsection.
 
ART. 5.12  PROCEDURE FOR DISSENT BY SHAREHOLDERS AS TO SAID CORPORATE ACTIONS
 
    A. Any shareholder of any domestic corporation who has the right to dissent
from any of the corporate actions referred to in Article 5.11 of this Act may
exercise that right to dissent only by complying with the following procedures:
<PAGE>
    (1)(a) With respect to proposed corporate action that is submitted to a vote
of shareholders at a meeting, the shareholder shall file with the corporation,
prior to the meeting, a written objection to the action, setting out that the
shareholder's right to dissent will be exercised if the action is effective and
giving the shareholder's address, to which notice thereof shall be delivered or
mailed in that event. If the action is effected and the shareholder shall not
have voted in favor of the action, the corporation, in the case of action other
than a merger, or the surviving or new corporation (foreign or domestic) or
other entity that is liable to discharge the shareholder's right of dissent, in
the case of a merger, shall, within ten (10) days after the action is effected,
deliver or mail to the shareholder written notice that the action has been
effected, and the shareholder may, within ten (10) days from the delivery or
mailing of the notice, make written demand on the existing, surviving, or new
corporation (foreign or domestic) or other entity, as the case may be, for
payment of the fair value of the shareholder's shares. The fair value of the
shares shall be the value thereof as of the day immediately preceding the
meeting, excluding any appreciation or depreciation in anticipation of the
proposed action. The demand shall state the number and class of the shares owned
by the shareholder and the fair value of the shares as estimated by the
shareholder. Any shareholder failing to make demand within the ten (10) day
period shall be bound by the action.
 
    (b) With respect to proposed corporate action that is approved pursuant to
Section A of Article 9.10 of this Act, the corporation, in the case of action
other than a merger, and the surviving or new corporation (foreign or domestic)
or other entity that is liable to discharge the shareholder's right of dissent,
in the case of a merger, shall, within ten (10) days after the date the action
is effected, mail to each shareholder of record as of the effective date of the
action notice of the fact and date of the action and that the shareholder may
exercise the shareholder's right to dissent from the action. The notice shall be
accompanied by a copy of this Article and any articles or documents filed by the
corporation with the Secretary of State to effect the action. If the shareholder
shall not have consented to the taking of the action, the shareholder may,
within twenty (20) days after the mailing of the notice, make written demand on
the existing, surviving, or new corporation (foreign or domestic) or other
entity, as the case may be, for payment of the fair value of the shareholder's
shares. The fair value of the shares shall be the value thereof as of the date
the written consent authorizing the action was delivered to the corporation
pursuant to Section A of Article 9.10 of this Act, excluding any appreciation or
depreciation in anticipation of the action. The demand shall state the number
and class of shares owned by the dissenting shareholder and the fair value of
the shares as estimated by the shareholder. Any shareholder failing to make
demand within the twenty (20) day period shall be bound by the action.
 
    (2) Within twenty (20) days after receipt by the existing, surviving, or new
corporation (foreign or domestic) or other entity, as the case may be, of a
demand for payment made by a dissenting shareholder in accordance with
Subsection (1) of this Section, the corporation (foreign or domestic) or other
entity shall deliver or mail to the shareholder a written notice that shall
either set out that the corporation (foreign or domestic) or other entity
accepts the amount claimed in the demand and agrees to pay that amount within
ninety (90) days after the date on which the action was effected, and, in the
case of shares represented by certificates, upon the surrender of the
certificates duly endorsed, or shall contain an estimate by the corporation
(foreign or domestic) or other entity of the fair value of the shares, together
with an offer to pay the amount of that estimate within ninety (90) days after
the date on which the action was effected, upon receipt of notice within sixty
(60) days after that date from the shareholder that the shareholder agrees to
accept that amount and, in the case of shares represented by certificates, upon
the surrender of the certificates duly endorsed.
 
    (3) If, within sixty (60) days after the date on which the corporate action
was effected, the value of the shares is agreed upon between the shareholder and
the existing, surviving, or new corporation (foreign or domestic) or other
entity, as the case may be, payment for the shares shall be made within ninety
(90) days after the date on which the action was effected and, in the case of
shares represented by certificates, upon surrender of the certificates duly
endorsed. Upon payment of the agreed value, the shareholder shall cease to have
any interest in the shares or in the corporation.
 
                                       2
<PAGE>
    B.  If, within the period of sixty (60) days after the date on which the
corporate action was effected, the shareholder and the existing, surviving, or
new corporation (foreign or domestic) or other entity, as the case may be, do
not so agree, then the shareholder or the corporation (foreign or domestic) or
other entity may, within sixty (60) days after the expiration of the sixty (60)
day period, file a petition in any court of competent jurisdiction in the county
in which the principal office of the domestic corporation is located, asking for
a finding and determination of the fair value of the shareholder's shares. Upon
the filing of any such petition by the shareholder, service of a copy thereof
shall be made upon the corporation (foreign or domestic) or other entity, which
shall, within ten (10) days after service, file in the office of the clerk of
the court in which the petition was filed a list containing the names and
addresses of all shareholders of the domestic corporation who have demanded
payment for their shares and with whom agreements as to the value of their
shares have not been reached by the corporation (foreign or domestic) or other
entity. If the petition shall be filed by the corporation (foreign or domestic)
or other entity, the petition shall be accompanied by such a list. The clerk of
the court shall give notice of the time and place fixed for the hearing of the
petition by registered mail to the corporation (foreign or domestic) or other
entity and to the shareholders named on the list at the addresses therein
stated. The forms of the notices by mail shall be approved by the court. All
shareholders thus notified and the corporation (foreign or domestic) or other
entity shall thereafter be bound by the final judgment of the court.
 
    C.  After the hearing of the petition, the court shall determine the
shareholders who have complied with the provisions of this Article and have
become entitled to the valuation of and payment for their shares, and shall
appoint one or more qualified appraisers to determine that value. The appraisers
shall have power to examine any of the books and records of the corporation the
shares of which they are charged with the duty of valuing, and they shall make a
determination of the fair value of the shares upon such investigation as to them
may seem proper. The appraisers shall also afford a reasonable opportunity to
the parties interested to submit to them pertinent evidence as to the value of
the shares. The appraisers shall also have such power and authority as may be
conferred on Masters in Chancery by the Rules of Civil Procedure or by the order
of their appointment.
 
    D. The appraisers shall determine the fair value of the shares of the
shareholders adjudged by the court to be entitled to payment for their shares
and shall file their report of that value in the office of the clerk of the
court. Notice of the filing of the report shall be given by the clerk to the
parties in interest. The report shall be subject to exceptions to be heard
before the court both upon the law and the facts. The court shall by its
judgment determine the fair value of the shares of the shareholders entitled to
payment for their shares and shall direct the payment of that value by the
existing, surviving, or new corporation (foreign or domestic) or other entity,
together with interest thereon, beginning 91 days after the date on which the
applicable corporate action from which the shareholder elected to dissent was
effected to the date of such judgment, to the shareholders entitled to payment.
The judgment shall be payable to the holders of uncertificated shares
immediately but to the holders of shares represented by certificates only upon,
and simultaneously with, the surrender to the existing, surviving, or new
corporation (foreign or domestic) or other entity, as the case may be, of duly
endorsed certificates for those shares. Upon payment of the judgment, the
dissenting shareholders shall cease to have any interest in those shares or in
the corporation. The court shall allow the appraisers a reasonable fee as court
costs, and all court costs shall be allotted between the parties in the manner
that the court determines to be fair and equitable.
 
    E.  Shares acquired by the existing, surviving, or new corporation (foreign
or domestic) or other entity, as the case may be, pursuant to the payment of the
agreed value of the shares or pursuant to payment of the judgment entered for
the value of the shares, as in this Article provided, shall, in the case of a
merger, be treated as provided in the plan of merger and, in all other cases,
may be held and disposed of by the corporation as in the case of other treasury
shares.
 
    F.  The provisions of this Article shall not apply to a merger if, on the
date of the filing of the articles of merger, the surviving corporation is the
owner of all the outstanding shares of the other corporations, domestic or
foreign, that are parties to the merger.
 
                                       3
<PAGE>
    G. In the absence of fraud in the transaction, the remedy provided by this
Article to a shareholder objecting to any corporate action referred to in
Article 5.11 of this Act is the exclusive remedy for the recovery of the value
of his shares or money damages to the shareholder with respect to the action. If
the existing, surviving, or new corporation (foreign or domestic) or other
entity, as the case may be, complies with the requirements of this Article, any
shareholder who fails to comply with the requirements of this Article shall not
be entitled to bring suit for the recovery of the value of his shares or money
damages to the shareholder with respect to the action.
 
ART. 5.13  PROVISIONS AFFECTING REMEDIES OF DISSENTING SHAREHOLDERS
 
    A. Any shareholder who has demanded payment for his shares in accordance
with either Article 5.12 or 5.16 of this Act shall not thereafter be entitled to
vote or exercise any other rights of a shareholder except the right to receive
payment for his shares pursuant to the provisions of those articles and the
right to maintain an appropriate action to obtain relief on the ground that the
corporate action would be or was fraudulent, and the respective shares for which
payment has been demanded shall not thereafter be considered outstanding for the
purposes of any subsequent vote of shareholders.
 
    B.  Upon receiving a demand for payment from any dissenting shareholder, the
corporation shall make an appropriate notation thereof in its shareholder
records. Within twenty (20) days after demanding payment for his shares in
accordance with either Article 5.12 or 5.16 of this Act, each holder of
certificates representing shares so demanding payment shall submit such
certificates to the corporation for notation thereon that such demand has been
made. The failure of holders of certificated shares to do so shall, at the
option of the corporation, terminate such shareholder's rights under Articles
5.12 and 5.16 of this Act unless a court of competent jurisdiction for good and
sufficient cause shown shall otherwise direct. If uncertificated shares for
which payment has been demanded or shares represented by a certificate on which
notation has been so made shall be transferred, any new certificate issued
therefor shall bear similar notation together with the name of the original
dissenting holder of such shares and a transferee of such shares shall acquire
by such transfer no rights in the corporation other than those which the
original dissenting shareholder had after making demand for payment of the fair
value thereof.
 
    C.  Any shareholder who has demanded payment for his shares in accordance
with either Article 5.12 or 5.16 of this Act may withdraw such demand at any
time before payment for his shares or before any petition has been filed
pursuant to Article 5.12 or 5.16 of this Act asking for a finding and
determination of the fair value of such shares, but no such demand may be
withdrawn after such payment has been made or, unless the corporation shall
consent thereto, after any such petition has been filed. If, however, such
demand shall be withdrawn as hereinbefore provided, or if pursuant to Section B
of this Article the corporation shall terminate the shareholder's rights under
Article 5.12 or 5.16 of this Act, as the case may be, or if no petition asking
for a finding and determination of fair value of such shares by a court shall
have been filed within the time provided in Article 5.12 or 5.16 of this Act, as
the case may be, or if after the hearing of a petition filed pursuant to Article
5.12 or 5.16, the court shall determine that such shareholder is not entitled to
the relief provided by those articles, then, in any such case, such shareholder
and all persons claiming under him shall be conclusively presumed to have
approved and ratified the corporate action from which he dissented and shall be
bound thereby, the right of such shareholder to be paid the fair value of his
shares shall cease, and his status as a shareholder shall be restored without
prejudice to any corporate proceedings which may have been taken during the
interim, and such shareholder shall be entitled to receive any dividends or
other distributions made to shareholders in the interim.
 
                                       4
<PAGE>
                                                                     APPENDIX VI
 
                          CAPROCK COMMUNICATIONS CORP.
                           1998 EQUITY INCENTIVE PLAN
                             Adopted         , 1998
 
    1.  PURPOSE OF THE PLAN.
 
    The purpose of the Plan is to provide a means by which selected Employees of
and Consultants to the Company and its Affiliates may be given an opportunity to
acquire a proprietary interest in the Company. Under the Plan, the Company may
provide various types of long-term incentive awards, including Stock Options,
Stock Appreciation Rights, Restricted Stock, Deferred Stock, Stock Reload
Options and Other Stock-Based Awards, in order to retain the services of persons
who are now Employees of or Consultants to the Company and its Affiliates, to
secure and retain the services of new Employees and Consultants, and to provide
incentives for such persons to exert maximum efforts for the success of the
Company and its Affiliates. Stock Options granted under the Plan may be
Incentive Stock Options or Nonqualified Stock Options, as determined by the
Committee at the time of grant of an Option and subject to the applicable
provisions of Section 422 of the Code and the regulations promulgated
thereunder.
 
    2.  DEFINITIONS.
 
    As used herein, the following definitions shall apply:
 
    (a)  "Affiliate" means, with respect to any Person, any Parent or Subsidiary
of such Person, whether such Parent or Subsidiary is now or hereafter existing.
 
    (b)  "Agreement" means the agreement between the Company and the Holder
setting forth the terms and conditions of an Award under the Plan.
 
    (c)  "Applicable Laws" means the legal requirements relating to the
administration of stock option plans under U.S. state corporate laws, U.S.
federal and state securities laws, the Code and the applicable laws of any
foreign country or jurisdiction where Options are, or will be, granted under the
Plan.
 
    (d)  "Award" means an award of Options, Stock Appreciation Rights,
Restricted Stock, Deferred Stock, Stock Reload Options or Other Stock-Based
Awards under the Plan.
 
    (e)  "Beneficial Owner" means a "beneficial owner" as defined in Rule 13d-3
of the Exchange Act.
 
    (f)  "Board" means the Board of Directors of the Company.
 
    (g)  "Code" means the Internal Revenue Code of 1986, as amended.
 
    (h)  "Change of Control" means the occurrence at any time after the
effective time of the Mergers of (i) any Person or Group of Persons becoming for
the first time the Beneficial Owner, directly or indirectly, of more than fifty
percent (50%) of the total combined voting power of all classes of capital stock
of the Company normally entitled to vote for the election of directors of the
Company ("Voting Stock"), other than as a result of a transfer or series of
related transfers of Voting Stock from a Person or Group of Persons who
immediately prior to such transfer or transfers was the Beneficial Owner, and
who after giving effect to such transfer or transfers continues to be the
Beneficial Owner, of more than fifty percent (50%) of the Voting Stock of the
Company; (ii) a merger (other than the Mergers) or consolidation of the Company
with or into another Person or the merger of another Person into the Company as
a consequence of which those Persons who held all of the Voting Stock of the
Company immediately prior to such merger or consolidation do not hold either
directly or indirectly a majority of the Voting Stock of the Company (or, if
applicable, the surviving company of such merger or consolidation) after the
consummation of such merger or consolidation; (iii) the sale of all or
substantially all of the assets of the Company to any Person or Group of Persons
(other than to an entity which owns a majority or more of the Common Stock of
the Company, a Subsidiary of the Company, or to an entity whose equity interests
are owned directly or indirectly by the Company or by an entity which owns
directly or indirectly a majority or more of the
<PAGE>
Common Stock of the Company); or (iv) any event or series of events (which event
or series of events must include a proxy fight or proxy solicitation with
respect to the election of directors of the Company made in opposition to the
nominees recommended by the Continuing Directors) during any period of 12
consecutive months all or any portion of which is after the effective time of
the Mergers, as a result of which a majority of the Board of Directors of the
Company consists of individuals other than Continuing Directors; provided,
however, that a "Change of Control" shall not be deemed to have occurred as a
result of the Mergers.
 
    (i)  "Committee" means the Compensation Committee of the Board of Directors.
 
    (j)  "Common Stock" means the Common Stock, par value $.01 per share, of the
Company.
 
    (k)  "Company" means CapRock Communications Corp.
 
    (l)  "Consultant" means (i) any person who is engaged by the Company or any
Parent or Subsidiary to render consulting or advisory services and is
compensated for such services and (ii) any Director of the Company, whether such
Director is compensated for such services or not.
 
    (m)  "Continuous Status as an Employee or Consultant" means that the
employment or consulting relationship with the Company or any Affiliate is not
interrupted or terminated. Continuous Status as an Employee or Consultant shall
not be considered interrupted in the case of (i) any leave of absence approved
by the Company or (ii) transfers between locations of the Company or between the
Company or any Affiliate or any successor. A leave of absence approved by the
Company shall include sick leave, military leave, or any other personal leave
approved by an authorized representative of the Company. For purposes of
Incentive Stock Options, no such leave may exceed 90 days, unless reemployment
upon expiration of such leave is guaranteed by statute or contract. If
reemployment upon expiration of a leave of absence approved by the Company is
not so guaranteed, on the 91st day of such leave any Incentive Stock Option held
by the Holder shall cease to be treated for tax purposes as an Incentive Stock
Option and shall be treated for tax purposes as a Nonqualified Stock Option.
 
    (n)  "Deferred Stock" means Stock to be received at the end of a specified
deferral period under an Award made pursuant to Section 10 below.
 
    (o)  "Director" means a member of the Board of Directors of the Company.
 
    (p)  "Employee" means any person, including Officers and Directors, employed
by the Company or any Affiliate of the Company. The payment of a Director's fee
by the Company shall not be sufficient to constitute "employment" by the
Company.
 
    (q)  "Exchange Act" means the Securities Exchange Act of 1934, as amended.
 
    (r)  "Fair Market Value" means, as of any date, the value of Common Stock
determined as follows:
 
        (i) If the Common Stock is listed on any established stock exchange or a
    national market system, including without limitation the Nasdaq National
    Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its Fair
    Market Value shall be the closing sales price for such stock (or the closing
    bid, if no sales were reported) as quoted on such exchange or system for the
    last market trading day prior to the time of determination, as reported in
    The Wall Street Journal or such other source as the Committee deems
    reliable;
 
        (ii) If the Common Stock is regularly quoted by a recognized securities
    dealer but selling prices are not reported, its Fair Market Value shall be
    the mean between the high bid and low asked prices for the Common Stock on
    the last market trading day prior to the day of determination; or
 
       (iii) In the absence of an established market for the Common Stock, the
    Fair Market Value thereof shall be determined in good faith by the
    Committee.
 
    (s)  "Group" means a "group" as such term is used in Section 13(d)(3) of the
Exchange Act.
 
                                       2
<PAGE>
    (t)  "Holder" means a person who has received an Award under the Plan.
 
    (u)  "Incentive Stock Option" means an Option intended to qualify as an
incentive stock option within the meaning of Section 422 of the Code.
 
    (v)  "Mergers" means the proposed combination of the businesses of CapRock
Telecommunications Corp., CapRock Fiber Network, Ltd., and IWL Communications
contemplated by the Agreement and Plan of Merger and Plan of Exchange entered
into on February 16, 1998.
 
    (w)  "Nonqualified Stock Option" means an Option not intended to qualify as
an Incentive Stock Option.
 
    (x)  "Officer" means a person who is an officer of the Company within the
meaning of Section 16 of the Exchange Act and the rules and regulations
promulgated thereunder.
 
    (y)  "Option" means a Stock Option granted pursuant to the Plan.
 
    (z)  "Option Agreement" shall mean the written option agreement,
substantially in the form attached hereto as EXHIBIT A(or such other form as may
be approved by the Committee for use under the Plan pursuant to Section 3(b)(v)
hereof), between the Company and Holder evidencing the grant of an Option.
 
    (aa)  "Optioned Stock" means the Common Stock subject to an Option.
 
    (bb)  "Other Stock-Based Awards" means awards (other than Stock Options,
Stock Appreciation Rights, Restricted Stock, Deferred Stock and Stock Reload
Options) denominated or payable in, valued in whole or in part by reference to,
or otherwise based on, or related to shares of Common Stock.
 
    (cc)  "Parent" means a "parent corporation," whether now or hereafter
existing, as defined in Section 424(e) of the Code.
 
    (dd)  "Person" means an individual or entity.
 
    (ee)  "Plan" means this 1998 Equity Incentive Plan.
 
    (ff)  "Restricted Stock" means Stock, received under an Award made pursuant
to Section 9 below, that is subject to restrictions under said Section 9.
 
    (gg)  "Rule 16b-3" means Rule 16b-3 promulgated under the Exchange Act or
any successor rule thereto.
 
    (hh)  "Section 16(b)" means Section 16(b) of the Exchange Act.
 
    (ii)  "SAR Value" means the excess of the Fair Market Value of one share of
Common Stock over the exercise price per share specified in a related Stock
Option in the case of a Stock Appreciation Right granted in tandem with a Stock
Option and the Stock Appreciation Right price per share in the case of a Stock
Appreciation Right awarded on a free standing basis, in each case multiplied by
the number of shares in respect of which the Stock Appreciation Right shall be
exercised, on the date of exercise.
 
    (jj)  "Share" means a share of the Common Stock of the Company.
 
    (kk)  "Stock" means the Common Stock of the Company.
 
    (ll)  "Stock Appreciation Right' means the right, pursuant to an Award
granted under Section 8 hereof, to recover an amount equal to the SAR Value.
 
    (mm)  "Stock Option" means any Option to purchase shares of Stock which is
granted pursuant to the Plan.
 
    (nn)  "Stock Reload Option" means any option granted under Section 7(e) as a
result of the payment of the exercise price of a Stock Option and/or the
withholding tax related thereto in the form of Stock owned by the Holder or the
withholding of Stock by the Company.
 
                                       3
<PAGE>
    (oo)  "Subsidiary" "Subsidiary" means a "subsidiary corporation," whether
now or hereafter existing, as defined in Section 424(f) of the Code, including
without limitation, in the case of the Company, IWL Communications, Incorporated
and CapRock Telecommunications Corp. (f/k/a CapRock Communications Corp.) and
including without limitation CapRock Fiber Network, Ltd.
 
    (pp)  "Tandem Stock Appreciation Right" means a Stock Appreciation Right
granted in tandem with all or part of any Stock Option granted under the Plan.
 
    3.  ADMINISTRATION OF THE PLAN.
 
    (a)  PLAN ADMINISTRATION.  The Plan at all times shall be administered by
the Committee, which shall be comprised solely of not less than two members who
shall be (i) "Non-Employee Directors" within the meaning of Rule 16b-3 and (ii)
unless otherwise determined by the Board of Directors, "outside directors"
within the meaning of Treasury Regulation Section 1.162-27(e)(3) under Section
162(m) of the Code.
 
    (b)  POWERS OF THE COMMITTEE.  Subject to the provisions of the Plan and
subject to the approval of any relevant authorities, including the approval, if
required, of any stock exchange upon which the Common Stock is listed, the
Committee shall have the full authority to award: (i) Stock Options, (ii) Stock
Appreciation Rights, (iii) Restricted Stock, (iv) Deferred Stock, (v) Stock
Reload Options and/or (vi) Other Stock-Based Awards. For purposes of
illustration and not of limitation, the Committee shall have the authority
(subject to the express provisions of the Plan):
 
        (i) to determine the Fair Market Value of the Common Stock;
 
        (ii) to select the Consultants and Employees to whom Awards may from
    time to time be granted hereunder;
 
       (iii) to determine whether and to what extent Awards or any combination
    thereof are granted hereunder;
 
        (iv) to determine the number of Shares to be covered by each such Award
    granted hereunder;
 
        (v) to approve forms of agreement for use under the Plan;
 
        (vi) to determine the terms and conditions, not inconsistent with the
    terms of the Plan, of any Award granted hereunder. Such terms and conditions
    include, but are not limited to, the exercise price of an Option; any
    specified performance goals or other criteria which must be attained for the
    vesting of an Award; any restrictions or limitations; and any vesting,
    exchange, surrender, cancellation, acceleration, termination, exercise or
    forfeiture provisions; and
 
       (vii) to construe and interpret the terms of the Plan and Awards granted
    pursuant to the Plan.
 
    (c)  EFFECT OF COMMITTEE'S DECISION.  All decisions, determinations and
interpretations of the Committee shall be final and binding on all Holders of
any Awards. No member of the Board or any Committee administering the Plan shall
be liable for any action taken or determination made in good faith with respect
to the Plan or any Option granted hereunder.
 
    4.  STOCK SUBJECT TO THE PLAN.
 
    The maximum aggregate number of Shares that may be acquired by Holders of
any Awards granted under the Plan is 5,000,000 Shares and the maximum number of
Shares that may be acquired by an individual Holder under the Plan shall not
exceed 2,500,000 (in each case subject to adjustment as provided in Section 12
of the Plan). The Shares may be authorized but unissued or reacquired Common
Stock.
 
    If any shares of Stock that have been granted pursuant to a Stock Option
cease to be subject to a Stock Option, or if any shares of Stock that are
subject to any Stock Appreciation Right, Restricted Stock, Deferred Stock award,
Reload Stock Option or Other Stock-Based Award granted hereunder are forfeited
 
                                       4
<PAGE>
or any such award otherwise terminates without a payment being made to the
Holder in the form of Stock, such shares shall again be available for
distribution in connection with future grants and awards under the Plan. Only
net shares issued upon a stock-for-stock exercise (including stock used for
withholding taxes) shall be counted against the number of shares available under
the Plan.
 
    5.  ELIGIBILITY.
 
    (a) Awards may be made or granted to key employees, officers, directors and
consultants of the Company who are deemed to have rendered or to be able to
render significant services to the Company or its Subsidiaries and who are
deemed to have contributed or to have the potential to contribute to the success
of the Company. No Incentive Stock Option shall be granted to any person who is
not an employee of the Company or a Subsidiary at the time of grant.
 
    (b) Each Option shall be designated in the Option Agreement as either an
Incentive Stock Option or a Nonqualified Stock Option. However, notwithstanding
such designation, to the extent that the aggregate Fair Market Value of the
Shares with respect to which Incentive Stock Options are exercisable for the
first time by the Optionee during any calendar year (under all plans of the
Company or any Affiliate) exceeds $100,000, such Options shall be treated for
tax purposes as Nonqualified Stock Options. For purposes of this Section 5(b),
Incentive Stock Options shall be taken into account in the order in which they
were granted. For purposes of this Section 5(b), the Fair Market Value of the
Shares shall be determined as of the time the Option with respect to such Shares
is granted.
 
    (c) Neither the Plan nor any Award shall confer upon any Holder any right
with respect to continuation of his or her employment or consulting relationship
with the Company or any Affiliate, nor shall it interfere in any way with his or
her right or the Company's right to terminate his or her employment or
consulting relationship at any time, with or without cause.
 
    6.  OPTION EXERCISE PRICE AND CONSIDERATION.
 
    (a) The per Share exercise price for the Shares to be issued upon exercise
of an Option shall be such price as is determined by the Committee, but in the
case of an Incentive Stock Option:
 
        (i) granted to an Employee who, at the time of grant of such Option,
    owns stock representing more than ten percent (10%) of the voting power of
    all classes of stock of the Company or any Affiliate, the per Share exercise
    price shall not be less than 110% of the Fair Market Value per Share on the
    date of grant; and
 
        (ii) granted to any other Employee, the per Share exercise price shall
    not be less than 100% of the Fair Market Value per Share on the date of
    grant.
 
    (b) The consideration to be paid for the Shares to be issued upon exercise
of an Option, including the method of payment, shall be determined by the
Committee (and, in the case of an Incentive Stock Option, shall be determined at
the time of grant). Such consideration shall be paid, to the extent permitted by
applicable statutes and regulations at the time the Option is exercised, either
(i) in cash or check, or (ii) at the discretion of the Committee, in one or a
combination of the following ways (which may be in combination with or in lieu
of payment by cash or check): (A) by delivery to the Company of other Shares of
Common Stock of the Company to be valued at their Fair Market Value on the
exercise date, (B) according to a deferred payment or other arrangement with the
Person to whom the Option is granted or to whom the Option is transferred
pursuant to Section 15, (C) withholding of Shares that would otherwise be issued
upon the exercise of the Option, valued at their Fair Market Value on the
exercise date, or (D) in any other form of legal consideration that may be
acceptable to the Committee. In making its determination as to the type of
consideration to accept, the Committee shall consider if acceptance of such
consideration may be reasonably expected to benefit the Company. In addition,
such consideration shall be accompanied by the delivery by the Optionee of a
properly executed exercise notice together with
 
                                       5
<PAGE>
such other documentation as the Committee and a broker, if applicable, shall
require to effect an exercise of the Option and delivery to the Company of the
sale or loan proceeds required to pay the exercise price.
 
    7.  EXERCISE OF OPTION.
 
    (a)  PROCEDURE FOR EXERCISE; RIGHTS AS A SHAREHOLDER.  Any Option granted
hereunder shall be exercisable at such times and under such conditions as
determined by the Committee, including performance criteria with respect to the
Company and/or the Optionee, and as shall be permissible under the terms of the
Plan. The total number of Shares subject to an Option may, but need not, be
allotted in periodic installments (which may, but need not, be equal). The
Option Agreement may provide that from time to time during each of such
installment periods, the Option may become exercisable with respect to some or
all of the Shares allotted to that period and may be exercised with respect to
some or all of the Shares allotted to such period and/or any prior period as to
which the Option became vested but was not fully exercised.
 
    An Option may not be exercised for a fraction of a Share. Exercise of an
Option in any manner shall result in a decrease in the number of Shares that
thereafter may be available, both for purposes of the Plan and for sale under
the Option, by the number of Shares as to which the Option is exercised.
 
    Subject to Section 18, an Option shall be deemed to be exercised when
written notice of such exercise has been given to the Company in accordance with
the terms of the Option Agreement by the Person entitled to exercise the Option
and full payment for the Shares with respect to which the Option is exercised
has been received by the Company. To the extent required by applicable federal,
state, local or foreign law, an Optionee shall make arrangements satisfactory to
the Company for the satisfaction of any withholding tax obligations that arise
by reason of an Option exercise or any sale of Shares, which obligations may, as
authorized by the Committee, consist of any consideration and method of payment
allowable under Section 6(b) hereof. Until the issuance (as evidenced by the
appropriate entry on the books of the Company or of a duly authorized transfer
agent of the Company) of the stock certificate evidencing such Shares, no right
to vote, receive dividends or any other rights as a shareholder shall exist with
respect to the Optioned Stock, notwithstanding the exercise of the Option. The
Company shall issue (or cause to be issued) such stock certificate promptly upon
exercise of the Option. No adjustment shall be made for a dividend or other
right for which the record date is prior to the date the stock certificate is
issued, except as provided in Section 12 hereof.
 
    (b)  TERMINATION OF EMPLOYMENT OR CONSULTING RELATIONSHIP.  Subject to
paragraph (c) below, in the event of termination of an Optionee's Continuous
Status as an Employee or Consultant, such Optionee may exercise his or her
Option to the extent that the Optionee was entitled to exercise it at the date
of such termination; provided, however, that such Option may be exercised only
within such period of time as is determined by the Committee at the date of
grant. Such time period shall not, in the case of an Incentive Stock Option,
exceed three (3) months after the date of such termination and shall not, in any
case, be later than the expiration date of the term of such Option as set forth
in the Option Agreement. To the extent that the Optionee was not entitled to
exercise the Option at the date of such termination, or if the Optionee does not
exercise such Option to the extent so entitled within the time specified herein,
the Option shall terminate, and the Shares covered by such Option shall revert
to the Plan. An Optionee's Continuous Status as an Employee or Consultant shall
not be terminated in the event of Optionee's change of status from an Employee
to a Consultant or from a Consultant to an Employee; provided, however, that in
the event of an Optionee's change of status from an Employee to a Consultant,
any Incentive Stock Option granted to such Employee shall automatically cease to
be treated for tax purposes as an Incentive Stock Option and shall be treated
for tax purposes as a Nonqualified Stock Option on the day three months and one
day following such change of status.
 
    (c)  DISABILITY OF OPTIONEE.  In the event of termination of an Optionee's
Continuous Status as an Employee or Consultant as a result of his or her
disability, the Optionee may, but only within twelve (12) months from the date
of such termination (and in no event later than the expiration date of the term
of
 
                                       6
<PAGE>
such Option as set forth in the Option Agreement), exercise the Option to the
extent he or she otherwise was entitled to exercise it at the date of such
termination. If such disability is not a "disability" as such term is defined in
Section 22(e)(3) of the Code, then in the case of an Incentive Stock Option such
Incentive Stock Option shall automatically cease to be treated for tax purposes
as an Incentive Stock Option and shall be treated for tax purposes as a
Nonqualified Stock Option on the day three months and one day following such
termination. To the extent that the Optionee was not entitled to exercise the
Option at the date of termination, or if the Optionee does not exercise such
Option to the extent so entitled within the time specified herein, the Option
shall terminate, and the Shares covered by such Option shall revert to the Plan.
 
    (d)  DEATH OF OPTIONEE.  In the event of the death of an Optionee, the
Option may be exercised at any time within twelve (12) months following the date
of death (but in no event later than the expiration date of the term of such
Option as set forth in the Option Agreement) by the Optionee's estate or by any
Person who acquired the right to exercise the Option by bequest or inheritance
(the "Option Beneficiary"), but only to the extent that the Optionee was
entitled to exercise the Option on the date of death. To the extent that, at the
time of death, the Optionee was not entitled to exercise the Option, or if the
Option Beneficiary does not exercise the Option within the time specified
herein, the Option shall terminate and the Shares covered by such Option shall
revert to the Plan.
 
    (e)  STOCK RELOAD OPTION.  The Committee may also grant to the Holder
(concurrently with the grant of an Incentive Stock Option and at or after the
time of grant in the case of a Non-Qualified Stock Option) a Stock Reload Option
up to the amount of shares of Stock held by the Holder for at least six months
and used to pay all or part of the exercise price of an Option and, if any,
withheld by the Company as payment for withholding taxes. Such Stock Reload
Option shall have an exercise price of the Fair Market Value as of the date of
the Stock Reload Option grant. Unless the Committee determines otherwise, a
Stock Reload Option may be exercised commencing one year after it is granted and
shall expire on the date of expiration of the Option to which the Stock Reload
Option is related.
 
    8.  STOCK APPRECIATION RIGHTS.
 
    (a)  GRANT AND EXERCISE.  Stock Appreciation Rights may be granted in tandem
with (i.e., Tandem Stock Appreciation Right) or in conjunction with all or part
of any Stock Option granted under the Plan or may be granted on a free-standing
basis. In the case of a Non-Qualified Stock Option, a Tandem Stock Appreciation
Right may be granted either at or after the time of the grant of such
Non-Qualified Stock Option. In the case of an Incentive Stock Option, a Tandem
Stock Appreciation Right may be granted only at the time of the grant of such
Incentive Stock Option.
 
    (b)  TERMS AND CONDITIONS.  Stock Appreciation Rights shall be subject to
the following terms and conditions:
 
        (i)  EXERCISABILITY.  Tandem Stock Appreciation Rights shall be
    exercisable only at such time or times and to the extent that the Stock
    Options to which they relate shall be exercisable in accordance with the
    provisions of Section 7 hereof and this Section 8 and may be subject to the
    Code with respect to related Incentive Stock Options and such additional
    limitations on exercisability as shall be determined by the Committee and
    set forth in the Agreement. Other Stock Appreciation Rights shall be
    exercisable at such time or times and subject to such terms and conditions
    as shall be determined by the Committee and set forth in the Agreement.
 
        (ii)  TERMINATION.  A Tandem Stock Appreciation Right shall terminate
    and shall no longer be exercisable upon the termination or exercise of the
    related Stock Option, except that, unless otherwise determined by the
    Committee at the time of grant, a Tandem Stock Appreciation Right granted
    with respect to less than the full number of shares covered by a related
    Stock Option shall not be reduced until after the number of shares remaining
    under the related Stock Option equals the number of shares covered by the
    Tandem Stock Appreciation Right.
 
                                       7
<PAGE>
        (iii)  METHOD OF EXERCISE.  A Tandem Stock Appreciation Right may be
    exercised by a Holder by surrendering the applicable portion of the related
    Stock Option. Upon such exercise and surrender, the Holder shall be entitled
    to receive such amount in the form determined pursuant to Section 8(b)(iv)
    below. Stock Options which have been so surrendered, in whole or in part,
    shall no longer be exercisable to the extent the related Tandem Stock
    Appreciation Rights have been exercised.
 
        (iv)  RECEIPT OF SAR VALUE.  Upon the exercise of a Stock Appreciation
    Right, a Holder shall be entitled to receive up to, but not more than, an
    amount in cash and/or shares of Stock equal to the SAR Value with the
    Committee having the right to determine the form of payment.
 
        (v)  SHARES AFFECTED UPON PLAN.  Upon the exercise of a Tandem Stock
    Appreciation Right, the Stock Option or part thereof to which such Tandem
    Stock Appreciation Right is related shall be deemed to have been exercised
    for the purpose of the limitation set forth in Section 4 hereof on the
    number of shares of Common Stock to be issued under the Plan, but only to
    the extent of the number of shares, if any, issued under the Tandem Stock
    Appreciation Right at the time of exercise based upon the SAR Value.
 
    9.  RESTRICTED STOCK.
 
    (a)  GRANT.  Shares of Restricted Stock may be awarded either alone or in
addition to other Awards granted under the Plan. The Committee shall determine
the eligible persons to whom, and the time or times at which, grants of
Restricted Stock will be awarded, the number of shares to be awarded, the price
(if any) to be paid by the Holder, the time or times within which such Awards
may be subject to forfeiture ("Restriction Period"), the vesting schedule and
rights to acceleration thereof, and all other terms and conditions of the
Awards.
 
    (b)  TERMS AND CONDITIONS.  Each Restricted Stock Award shall be subject to
the following terms and conditions:
 
        (i)  CERTIFICATES.  Restricted Stock, when issued, will be represented
    by a stock certificate or certificates registered in the name of the Holder
    to whom such Restricted Stock shall have been awarded. During the
    Restriction Period, certificates representing the Restricted Stock and any
    securities constituting Retained Distributions (as defined below) shall bear
    a legend to the effect that ownership of the Restricted Stock (and such
    Retained Distributions), and the enjoyment of all rights appurtenant
    thereto, are subject to the restrictions, terms and conditions provided in
    the Plan and the Agreement. Such certificates shall be deposited by the
    Holder with the Company, together with stock powers or other instruments of
    assignment, each endorsed in blank, which will permit transfer to the
    Company of all or any portion of the Restricted Stock and any securities
    constituting Retained Distributions that shall be forfeited or that shall
    not become vested in accordance with the Plan and the Agreement.
 
        (ii)  RIGHTS OF HOLDER.  Restricted Stock shall constitute issued and
    outstanding shares of Common Stock for all corporate purposes. The Holder
    will have the right to vote such Restricted Stock, to receive and retain all
    regular cash dividends and other cash equivalent distributions as the Board
    may in its sole discretion designate, pay or distribute on such Restricted
    Stock and to exercise all other rights, powers and privileges of a holder of
    Common Stock with respect to such Restricted Stock, with the exceptions that
    (A) the Holder will not be entitled to delivery of the stock certificate or
    certificates representing such Restricted Stock until the Restriction Period
    shall have expired and unless all other vesting requirements with respect
    thereto shall have been fulfilled; (B) the Company will retain custody of
    the stock certificate or certificates representing the Restricted Stock
    during the Restriction Period; (C) other than regular cash dividends and
    other cash equivalent distributions as the Board may in its sole discretion
    designate, pay or distribute, the Company will retain custody of all
    distributions ("Retained Distributions") made or declared with respect to
    the Restricted Stock (and
 
                                       8
<PAGE>
    such Retained Distributions will be subject to the same restrictions, terms
    and conditions as are applicable to the Restricted Stock) until such time,
    if ever, as the Restricted Stock with respect to which such Retained
    Distributions shall have been made, paid or declared shall have become
    vested and with respect to which the Restriction Period shall have expired;
    (D) a breach of any of the restrictions, terms or conditions contained in
    this Plan or the Agreement or otherwise established by the Committee with
    respect to any Restricted Stock or Retained Distributions will cause a
    forfeiture of such Restricted Stock and any Retained Distributions with
    respect thereto.
 
        (iii)  VESTING: FORFEITURE.  Upon the expiration of the Restriction
    Period with respect to each Award of Restricted Stock and the satisfaction
    of any other applicable restrictions, terms and conditions (A) all or part
    of such Restricted Stock shall become vested in accordance with the terms of
    the Agreement, and (B) any Retained Distributions with respect to such
    Restricted Stock shall become vested to the extent that the Restricted Stock
    related thereto shall have become vested. Any such Restricted Stock and
    Retained Distributions that do not vest shall be forfeited to the Company
    and the Holder shall not thereafter have any rights with respect to such
    Restricted Stock and Retained Distributions that shall have been so
    forfeited.
 
    10.  DEFERRED STOCK.
 
    (a)  GRANT.  Shares of Deferred Stock may be awarded either alone or in
addition to other Awards granted under the Plan. The Committee shall determine
the eligible persons to whom and the time or times at which grants of Deferred
Stock shall be awarded, the number of shares of Deferred Stock to be awarded to
any person, the duration of the period ("Deferral Period") during which, and the
conditions under which receipt of the shares will be deferred, and all the other
terms and conditions of the Awards.
 
    (b)  TERMS AND CONDITIONS.  Each Deferred Stock Award shall be subject to
the following terms and conditions:
 
        (i)  CERTIFICATES.  At the expiration of the Deferral Period (or the
    Additional Deferral Period referred to in Section 10(b)(iii) below, where
    applicable), share certificates shall be delivered to the Holder, or his
    legal representative, representing the number equal to the shares covered by
    the Deferred Stock Award.
 
        (ii)  VESTING; FORFEITURE.  Upon the expiration of the Deferral Period
    (or the Additional Deferral Period, where applicable) with respect to each
    Award of Deferred Stock and the satisfaction of any other applicable
    limitations, terms or conditions, such Deferred Stock shall become vested in
    accordance with the terms of the Agreement. Any Deferred Stock that does not
    vest shall be forfeited to the Company and the Holder shall not thereafter
    have any rights with respect to such Deferred Stock that has been so
    forfeited.
 
        (iii)  ADDITIONAL DEFERRAL PERIOD.  A Holder may request to, and the
    Committee may at any time, defer the receipt of an Award (or an installment
    of an Award) for an additional specified period or until a specified event
    ("Additional Deferral Period"). Subject to any exceptions adopted by the
    Committee, such request must generally be made at least one year prior to
    expiration of the Deferral Period for such Deferred Stock Award (or such
    installment).
 
    11.  OTHER STOCK-BASED AWARDS.
 
    (a)  GRANT AND EXERCISE.  Other Stock-Based Awards may be awarded, subject
to limitations under applicable law, that are denominated or payable in, valued
in whole or in part by reference to, or otherwise based on, or related to,
shares of Common Stock, as deemed by the Committee to be consistent with the
purposes of the Plan, including, without limitation, purchase rights, shares of
Common Stock awarded which are not subject to any restrictions or conditions,
convertible or exchangeable debentures, or other rights convertible into shares
of Common Stock and Awards valued by reference to the value of securities
 
                                       9
<PAGE>
of or the performance of specified Subsidiaries. Other Stock-Based Awards may be
awarded either alone or in addition to or in tandem with any other Awards under
this Plan or any other plan of the Company.
 
    (b)  ELIGIBILITY FOR OTHER STOCK-BASED AWARDS.  The Committee shall
determine the eligible persons to whom and the time or times at which grants of
such Other Stock-Based Awards shall be made, the number of shares of Common
Stock to be awarded pursuant to such Awards, and all other terms and conditions
of the Awards.
 
    (c)  TERMS AND CONDITIONS.  Each Other Stock-Based Award shall be subject to
such terms and conditions as may be determined by the Committee.
 
    12.  ADJUSTMENTS UPON CHANGES IN CAPITALIZATION OR MERGER.
 
    (a)  CHANGES IN CAPITALIZATION.  Subject to any required action by the
shareholders of the Company, the number of shares of Common Stock covered by
each outstanding Award, and the number of shares of Common Stock which have been
authorized for issuance under the Plan but as to which no Awards have yet been
granted or which have been returned to the Plan upon cancellation or expiration
of an Award, as well as the price per share of Common Stock covered by each such
outstanding Award, shall be proportionately adjusted for any increase or
decrease in the number of issued shares of Common Stock resulting from a stock
split, reverse stock split, stock dividend, combination or reclassification of
the Common Stock, or any other increase or decrease in the number of issued
shares of Common Stock effected without receipt of consideration by the Company.
The conversion of any convertible securities of the Company shall not be deemed
to have been "effected without receipt of consideration." Such adjustment shall
be made by the Committee, whose determination in that respect shall be final,
binding and conclusive. Except as expressly provided herein, no issuance by the
Company of shares of stock of any class, or securities convertible or
exchangeable into shares of stock of any class, shall affect, and no adjustment
by reason thereof shall be made with respect to, the number or exercise price of
shares of Common Stock subject to an Award.
 
    (b)  DISSOLUTION OR LIQUIDATION.  In the event of the proposed dissolution
or liquidation of the Company, the Committee shall notify the Holder at least
fifteen (15) days prior to such proposed action. To the extent it has not been
previously exercised, the Award shall terminate immediately prior to the
consummation of such proposed action; provided, however, that the Committee may,
in the exercise of its sole discretion in such instances, declare that any Award
shall terminate as of an earlier date fixed by the Committee and give each
Holder the right to exercise his or her rights as to all or any part of the
Award, including Shares as to which the Award would not otherwise be
exercisable.
 
    (c)  MERGER OR ASSET SALE.  Subject to Section 12(d), in the event of the
merger of the Company into, or the consolidation of the Company with, another
corporation in which the shareholders of the Company receive cash or securities
of another issuer, or any combination thereof, in exchange for their shares of
Common Stock, or the sale of all or substantially all of the assets of the
Company, each outstanding Award shall be assumed or an equivalent option or
right substituted by the successor corporation or an Affiliate of the successor
corporation. In the event that the successor corporation refuses to assume or
substitute for the Award, the Holder shall fully vest in and have the right to
exercise the Award (provided it has not already terminated), including Shares as
to which it would not otherwise be vested or exercisable. If an Award becomes
fully vested and exercisable in lieu of assumption or substitution in the event
of a merger, consolidation or sale of assets, the Committee shall notify the
Holder that the Award shall be fully exercisable for a period of fifteen (15)
days from the date of such notice, and the Award shall terminate upon the
expiration of such period. For the purposes of this paragraph, the Award shall
be considered assumed if, following the merger, consolidation or sale of assets,
the option substituted for such Award confers the right to purchase or receive,
for each Share of Stock subject to the Award immediately prior to the merger,
consolidation or sale of assets, the per Share consideration (whether stock,
cash, or other securities or property) received in the merger, consolidation or
sale of assets by holders of Common Stock (and if holders were offered a choice
of consideration, the type of consideration chosen by the holders of a
 
                                       10
<PAGE>
majority of the outstanding Shares); provided, however, that if such
consideration received in the merger, consolidation or sale of assets is not
solely common stock of the successor corporation or its Parent (if any), the
Committee may, with the consent of the successor corporation, provide for the
consideration to be received upon the exercise of the Award, for each Share of
Stock subject to the Award, to be solely common stock of the successor
corporation or its Parent (if any) equal in fair market value to the per Share
consideration received by holders of Common Stock in the merger, consolidation
or sale of assets.
 
    (d)  CHANGE OF CONTROL.  Notwithstanding anything to the contrary, the
Committee may grant Awards which provide for the acceleration of the vesting of
Shares subject to the Award upon a Change of Control. Such provisions shall be
set forth in the Agreement.
 
    (e)  FURTHER ADJUSTMENTS.  In the event of any change of a type described in
paragraphs (a) or (c) above, the Committee shall make any further adjustment to
the maximum number of Shares which may be acquired under the Plan pursuant to
the exercise of Awards, the maximum number of Shares for which Awards may be
granted to any one Employee and the number of Shares and price per Share subject
to outstanding Awards as shall be equitable to prevent dilution or enlargement
of rights under such Awards, and the determination of the Committee as to these
matters shall be conclusive and binding on the Holder; provided, however, that
(i) each such adjustment with respect to an Incentive Option shall comply with
the rules of Section 424(a) of the Code (or any successor provision) and (ii) in
no event shall any adjustment be made which would render any Incentive Stock
Option granted hereunder other than an "incentive stock option" as defined in
Section 422 of the Code.
 
    (f)  NO LIMITATION ON RIGHT TO MERGE, ETC.  The grant of Awards pursuant to
the Plan shall not restrict in any way the right or power of the Company to make
adjustments, reclassifications, reorganizations or changes of its capital or
business structure or to merge, consolidate, dissolve, liquidate, or sell or
transfer all or any part of its business or assets.
 
    13.  TERM OF PLAN.
 
    The Plan shall become effective upon the earlier to occur of its adoption by
the Committee or its approval by the shareholders of the Company, as described
in Section 21 of the Plan. It shall continue in effect for a term of ten (10)
years unless sooner terminated under Section 17 of the Plan.
 
    14.  TERM OF OPTIONS.
 
    The term of each Option shall be the term stated in the Option Agreement;
provided, however, that the term shall be no more than ten (10) years from the
date of grant thereof; and provided further that in the case of an Incentive
Stock Option granted to an Optionee who, at the time the Option is granted, owns
stock representing more than ten percent (10%) of the voting power of all
classes of stock of the Company or any Affiliate, the term of the Option shall
be no more than five (5) years from the date of grant thereof.
 
    15.  NON-TRANSFERABILITY OF AWARDS.
 
    An Incentive Stock Option shall not be transferrable except by will or by
the laws of descent and distribution and shall be exercisable during the
lifetime of the Person to whom the Incentive Stock Option is granted only by
such Person. Any other Award, including a Nonqualified Stock Option, shall not
be transferrable except by will or by the laws of descent and distribution or
pursuant to a qualified domestic relations order, as defined by the Code or by
Title I of the Employee Retirement Income Security Act of 1974, as amended, or
the rules thereunder (a "QDRO"), and shall be exercisable during the lifetime of
the Person to whom the Option is granted only by such Person or any transferee
pursuant to a QDRO.
 
                                       11
<PAGE>
    16.  TIME OF GRANTING AWARDS.
 
    The date of grant of an Award shall, for all purposes, be the date on which
the Committee makes the determination granting such Award, or such other date as
is determined by the Committee. Notice of the determination shall be given to
each Employee or Consultant to whom an Award is so granted within a reasonable
time after the date of such grant.
 
    17.  AMENDMENT AND TERMINATION OF THE PLAN.
 
    The Board may amend or terminate the Plan in any respect whatsoever,
provided that any such amendment or termination of the Plan shall not affect
Award already granted and such Award shall remain in full force and effect as if
the Plan had not been amended or terminated. In addition, to the extent
necessary and desirable to comply with Rule 16b-3 (or any other applicable law
or regulation, including the requirements of the NASD or an established stock
exchange), the Company shall obtain shareholder approval of any Plan amendment
in such a manner and to such a degree as required.
 
    18.  CONDITIONS UPON ISSUANCE OF SHARES.
 
    Shares shall not be issued pursuant to an Award unless the issuance and
delivery of such Shares pursuant thereto shall comply with all relevant
Applicable Laws, including, without limitation, the Securities Act of 1933, as
amended (the "Securities Act"), the Exchange Act, the rules and regulations
promulgated thereunder, and the requirements of any stock exchange upon which
the Shares may then be listed or any automatic quotation system upon which the
Shares may then be quoted, and shall be further subject to the approval of
counsel for the Company with respect to such compliance.
 
    The Company may require any Optionee or other Holder, as a condition of
receiving Shares pursuant to an Award, (i) to give written assurances
satisfactory to the Company as to the Holder's knowledge and experience in
financial and business matters and/or to employ a purchaser representative
reasonably satisfactory to the Company who is knowledgeable and experienced in
financial and business matter, and that he or she is capable of evaluating,
alone or together with the purchaser representative, the merits and risks of
exercising the Award; (ii) to give written assurances satisfactory to the
Company stating that such Person is acquiring the Shares subject to the Award
for such Person's own account and not with any present intention of selling or
otherwise distributing such Shares; and (iii) to deliver such other
documentation as may be necessary to comply with federal and state securities
laws. These requirements, and any assurances given pursuant to such
requirements, shall be inoperative if (i) the issuance of the Shares upon the
exercise of the Award has been registered under a then currently effective
registration statement under the Securities Act and all applicable state
securities laws, or (ii) as to any particular requirement, a determination is
made by counsel for the Company that such requirement need not be met in the
circumstances under the then applicable securities laws. The Company may, upon
advice of counsel to the Company, place legends on stock certificates issued
under the Plan as such counsel deems necessary or appropriate in order to comply
with applicable securities laws, including, but not limited to, legends
restricting the transfer of the Shares, and may enter stop-transfer orders
against the transfer of the Shares issued upon the exercise of an Award.
 
    The inability of the Company to obtain authority from any regulatory body
having jurisdiction, which authority is deemed by the Company's counsel to be
necessary to the lawful issuance and sale of any Shares hereunder, shall relieve
the Company of any liability in respect of the failure to issue or sell such
Shares as to which such requisite authority shall not have been obtained.
 
    19.  RESERVATION OF SHARES.
 
    The Company, during the term of the Plan, shall at all times reserve and
keep available such number of Shares as shall be sufficient to satisfy the
requirements of the Plan.
 
                                       12
<PAGE>
    20.  AGREEMENTS.
 
    Options shall be evidenced by Option Agreements in such form as the
Committee shall approve from time to time. Other Awards shall be evidenced by
similar Agreements.
 
    21.  SHAREHOLDER APPROVAL.
 
    Continuance of the Plan shall be subject to approval by the shareholders of
the Company within twelve (12) months before or after the date the Plan is
adopted. Such shareholder approval shall be obtained to the extent and in manner
required under Applicable Laws and the rules of any stock exchange upon which
the Common Stock is listed or any automatic quotation system upon which the
Common Stock is quoted.
 
    22.  USE OF PROCEEDS FROM STOCK.
 
    Proceeds from the sale of stock pursuant to Options or other Awards shall
constitute general funds of the Company.
 
    23.  MISCELLANEOUS.
 
    (a)  ACCELERATION OF VESTING.  The Committee shall have the power to
accelerate the time at which an Award may first be exercised or the time during
which an Award or any part thereof will vest, notwithstanding the provisions in
the Award Agreement stating the time at which it may first be exercised or the
time during which it will vest.
 
    (b)  RULE 16B-3.  With respect to Persons subject to Section 16 of the
Exchange Act, transactions under the Plan are intended to comply with all
applicable conditions of Rule 16b-3 and with respect to such Persons all
transactions shall be subject to such conditions regardless of whether they are
expressly set forth in the Plan or the Award Agreement. To the extent any
provision of the Plan or action by the Committee fails to so comply, it shall
not apply to such Persons or their transactions and shall be deemed null and
void, to the extent permitted by law and deemed advisable by the Committee.
 
    (c)  GRANTS EXCEEDING ALLOTTED SHARES.  If the number of shares of Stock
subject to an Award granted pursuant to the Plan exceeds, as of the date of
grant, the number of Shares that may be issued under the Plan without additional
shareholder approval, such Award shall be void with respect to such excess
Shares, unless shareholder approval of an amendment sufficiently increasing the
number of Shares subject to the Plan is timely obtained in accordance with
Section 17 of the Plan.
 
    (d)  NOTICE.  Any written notice to the Company required by any of the
provisions of the Plan shall be addressed to the Secretary of the Company and
shall become effective when it is received. Any written notice to Holders
required by any provisions of the Plan shall be addressed to the Holder at the
address on file with the Company and shall become effective three days after it
is mailed by certified mail, postage prepaid to such address or at the time of
delivery if delivered sooner by messenger or overnight courier.
 
    (e)  SAVINGS CLAUSE.  Notwithstanding any other provision hereof, the Plan
is intended to qualify as a plan pursuant to which Incentive Stock Options may
be issued under Section 422 of the Code. If the Plan or any provision of the
Plan shall be held to be invalid or to fail to meet the requirements of Section
422 of the Code or the regulations promulgated thereunder, such invalidity or
failure shall not affect the remaining parts of the Plan, but rather it shall be
construed and enforced as if the Plan or the affected provision thereof, as the
case may be, complied in all respects with the requirements of Section 422 of
the Code.
 
    (f)  GOVERNING LAW.  The Plan and all rights and obligations thereunder
shall be construed in accordance with and governed by the laws of the State of
Texas without regard to its conflict of laws rules.
 
                                       13
<PAGE>
                                                                       EXHIBIT A
 
                          CAPROCK COMMUNICATIONS CORP.
                           1998 EQUITY INCENTIVE PLAN
                             STOCK OPTION AGREEMENT
 
    Unless otherwise defined herein, the terms defined in the Plan shall have
the same defined meanings in this Option Agreement.
 
    I.  NOTICE OF STOCK OPTION GRANT
 
[Optionee's name and address]
 
    You have been granted an option to purchase Common Stock of the Company,
subject to the terms and conditions of this Option Agreement and the Plan,
including the provisions thereof relating to increases in the number of shares
covered by this Option upon the occurrence of certain specified events, as
follows:
 
<TABLE>
<S>                                            <C>
Grant Number.................................
Date of Grant................................
Vesting Commencement Date....................
Exercise Price per Share.....................  $
Total Number of Shares Granted...............
Total Exercise Price.........................  $
Type of Option:                                       Incentive Stock Option
                                                   Nonqualified Stock Option
Term/Expiration Date:
(No more than 10 years from date of grant, 5
  years for certain grants)
</TABLE>
 
VESTING SCHEDULE
 
    This Option may be exercised, in whole or in part, in accordance with the
following schedule. Except only as specifically provided elsewhere herein or in
the Plan, this Option shall be exercisable in the following cumulative
installments:
 
[NOTE: TO BE COMPLETED UPON GRANT OF OPTIONS]
 
TERMINATION PERIOD
 
    You may exercise this Option for three months (or such shorter period
provided for elsewhere herein) after your employment or consulting relationship
with the Company terminates, or for such longer period upon your death or
disability as provided in the Plan. If your status changes from Employee to
Consultant or Consultant to Employee, this Option Agreement shall remain in
effect. In no case may you exercise this Option after the Term/Expiration Date
as provided above. Notwithstanding the foregoing, in the event the Company
terminates your employment for Cause (as defined below), this Option will
terminate on the date of the termination of your employment and will not be
exercisable thereafter. For purposes of this Agreement, "Cause" means the
occurrence of any of the following events or reasons:
 
    (a) Optionee's conviction for a felony offense or commission by Optionee of
any act abhorrent to the community that the Company considers materially
damaging to or tending to discredit the reputation of the Company;
 
    (b) Dishonesty, fraud, willful misconduct, unlawful discrimination or theft
on the part of Optionee;
 
                                       14
<PAGE>
    (c) Optionee's using for his or her own benefit any confidential or
proprietary information of the Company, or willfully or negligently divulging
any such information to third parties without the prior written consent of the
Company;
 
    (d) Optionee's public drunkenness, public use of illegal substances or drugs
or the use, possession, distribution or being under the influence of alcohol or
illegal substances or drugs in the workplace (the only exception is that
Optionee may consume alcohol reasonably and responsibly, if he or she so
chooses, at legitimate business events and functions where alcohol is legally
available); or
 
    (e) the determination by the Company that Optionee has continually failed or
refused to comply, after notice of and a reasonable opportunity to cure such
failure or refusal, with the policies, standards, regulations, instructions, or
directions of the Company as they currently exist or as they may be modified
from time to time.
 
    II.  AGREEMENT
 
    1.  GRANT OF OPTION.  CapRock Communications Corp. (the "Company") hereby
grants to the Optionee named in Section I hereof (the "Optionee") an option
(the"Option") to purchase the total number of shares of Common Stock (the
"Shares") set forth in Section I hereof, at the exercise price per share set
forth in Section I hereof (the "Exercise Price") subject to the terms,
definitions and provisions of the 1998 Stock Option Plan (the "Plan") adopted by
the Company, which is incorporated herein by reference. Unless otherwise defined
herein, the terms defined in the Plan shall have the same defined meanings in
this Option Agreement.
 
    If designated in Section I hereof as an Incentive Stock Option, this Option
is intended (subject to Section 5(b) of the Plan) to qualify as an Incentive
Stock Option as defined in Section 422 of the Code.
 
    2.  EXERCISE OF OPTION.
 
    (a)  RIGHT TO EXERCISE.  This Option shall be exercisable during its term in
accordance with the Vesting Schedule set out in Section I hereof and with the
applicable provisions of the Plan and this Option Agreement. In the event of
Optionee's death, disability or other termination of the employment or
consulting relationship, this Option shall be exercisable in accordance with the
applicable provisions of the Plan and this Option Agreement.
 
    (b)  METHOD OF EXERCISE.  This Option shall be exercisable by written notice
(in the form attached hereto as Exhibit A) which shall state the election to
exercise the Option, the number of Shares in respect of which the Option is
being exercised, and such other representations and agreements as to the
holder's investment intent with respect to such shares of Common Stock as may be
required by the Company pursuant to the provisions of the Plan. Such written
notice shall be signed by the Optionee and shall be delivered in person or by
certified mail to the Secretary of the Company. The written notice shall be
accompanied by payment of the Exercise Price. This Option shall be deemed to be
exercised upon receipt by the Company of such written notice accompanied by the
Exercise Price.
 
    The Optionee shall, upon notification of the amount due (if any) as a result
of the exercise of the Option and prior to or concurrent with delivery of the
certificate representing the Shares, pay to the Company as provided in the Plan
amounts necessary to satisfy applicable federal, state and local tax withholding
requirements.
 
    No Shares will be issued pursuant to the exercise of an Option unless such
issuance and such exercise shall comply with all relevant provisions of law and
the requirements of any stock exchange upon which the Shares may then be listed
or any automatic quotation system upon which the Shares may then be quoted.
Assuming such compliance, for income tax purposes the Shares shall be considered
transferred to the Optionee on the date on which the Option is exercised with
respect to such Shares.
 
                                       15
<PAGE>
    3.  METHOD OF PAYMENT.  The purchase price of Optioned Shares acquired
pursuant to the Option shall be paid as set forth in the Plan. THE USE OF SHARES
OF STOCK ACQUIRED OR TO BE ACQUIRED TO PAY FOR EXERCISED SHARES MAY HAVE INCOME
TAX CONSEQUENCES FOR THE OPTIONEE.
 
    4.  RESTRICTIONS ON EXERCISE.  This Option may not be exercised until such
time as the Plan has been approved by the shareholders of the Company, and may
not be exercised if the issuance of such Shares upon such exercise or the method
of payment of consideration for such shares would constitute a violation of any
applicable federal or state securities or other law or regulation, including any
rule under Part 207 of Title 12 of the Code of Federal Regulations as
promulgated by the Federal Reserve Board.
 
    5.  NON-TRANSFERABILITY OF OPTION.  This Option may not be transferred in
any manner otherwise than by will or by the laws of descent or distribution or
as otherwise set forth in the Plan and may be exercised during the lifetime of
Optionee only by Optionee or a permitted transferee as set forth in the Plan.
The terms of the Plan and this Option shall be binding upon the executors,
administrators, heirs, successors and assigns of the Optionee.
 
    6.  TERM OF OPTION.  This Option may be exercised only within the term set
out in Section I hereof, and may be exercised during such term only in
accordance with the Plan and the terms of this Option. The limitations set out
in Sections 5 and 6 of the Plan regarding Options designated as Incentive Stock
Options and Options granted to more than ten percent (10%) shareholders shall
apply to this Option.
 
    7.  TAX CONSEQUENCES.  The grant and/or exercise of the Option will have
federal and state income tax consequences. THE OPTIONEE SHOULD CONSULT A TAX
ADVISER UPON THE GRANT OF THE OPTION AND BEFORE EXERCISING THE OPTION OR
DISPOSING OF THE SHARES ACQUIRED UPON EXERCISE, PARTICULARLY WITH RESPECT TO HIS
OR HER STATE'S TAX LAWS.
 
    8.  ENTIRE AGREEMENT; GOVERNING LAW.  The Plan is incorporated herein by
reference. The Plan and this Option Agreement constitute the entire agreement of
the parties with respect to the subject matter hereof and supersede in their
entirety all prior undertakings and agreements of the Company and Optionee with
respect to the subject matter hereof, and this Option Agreement may not be
amended except by means of a writing signed by the Company and Optionee. This
Option Agreement is governed by Texas law except for that body of law pertaining
to conflict of laws.
 
    9.  WARRANTIES, REPRESENTATIONS AND COVENANTS.  The undersigned Optionee
warrants and represents that he or she has reviewed the Plan and this Option
Agreement in their entirety, has had an opportunity to obtain the advice of
counsel prior to executing this Option Agreement and fully understands all
provisions of the Plan and Option Agreement. Optionee hereby agrees to accept as
binding, conclusive and final all decisions or interpretations of the Committee
upon any questions relating to the Plan and Option Agreement. Optionee further
agrees to notify the Company upon any change in the residence address indicated
below. OPTIONEE ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT TO
THE OPTION HEREOF IS EARNED ONLY BY CONTINUING CONSULTANCY OR EMPLOYMENT AT THE
WILL OF THE COMPANY (NOT THROUGH THE ACT OF BEING HIRED, BEING GRANTED THIS
OPTION OR ACQUIRING SHARES HEREUNDER). OPTIONEE FURTHER ACKNOWLEDGES AND AGREES
THAT NOTHING IN THIS OPTION AGREEMENT, NOR IN THE PLAN, WHICH IS INCORPORATED
HEREIN BY REFERENCE, SHALL CONFER UPON OPTIONEE ANY RIGHT WITH RESPECT TO
CONTINUATION OF EMPLOYMENT OR CONSULTANCY BY THE COMPANY, NOR SHALL IT INTERFERE
IN ANY
 
                                       16
<PAGE>
WAY WITH OPTIONEE'S RIGHT OR THE COMPANY'S RIGHT TO TERMINATE OPTIONEE'S
EMPLOYMENT OR CONSULTANCY AT ANY TIME, WITH OR WITHOUT CAUSE.
 
<TABLE>
<S>                             <C>  <C>
                                CAPROCK COMMUNICATIONS CORP.
 
                                By:
                                     -----------------------------------------
                                Name: --------------------------------------
                                Title: ---------------------------------------
</TABLE>
 
                                          OPTIONEE:
 
                                          --------------------------------------
                                          Signature
 
                                          --------------------------------------
                                          Print Name
 
                                          --------------------------------------
                                          Residence Address
 
                                          --------------------------------------
                                          Area Code/Telephone Number
 
                                       17
<PAGE>
                                   EXHIBIT A
                          CAPROCK COMMUNICATIONS CORP.
                           1998 EQUITY INCENTIVE PLAN
                                EXERCISE NOTICE
 
CapRock Communications Corp.
Two Galleria Tower, Suite 1925
13455 Noel Road
Dallas, Texas 75240-6638
 
Attention: Secretary
 
    1.  EXERCISE OF OPTION.  Effective as of today,             , 199 , the
undersigned ("Purchaser") hereby elects to purchase         shares (the
"Shares") of the Common Stock of CapRock Communications Corp. (the "Company")
under and pursuant to the 1998 Stock Option Plan (the "Plan") and the Stock
Option Agreement dated             , 199 (the "Option Agreement"). The purchase
price for the Shares shall be $        , as specified in the Option Agreement.
 
    2.  DELIVERY OF PAYMENT.  Purchaser herewith delivers to the Company the
full purchase price for the Shares of                   . THE USE OF SHARES OF
STOCK ACQUIRED OR TO BE ACQUIRED FOR EXERCISED SHARES MAY HAVE INCOME TAX
CONSEQUENCES FOR THE OPTIONEE.
 
    3.  REPRESENTATIONS OF PURCHASER.  Purchaser acknowledges that Purchaser has
received, read and understood the Plan and the Option Agreement and agrees to
abide by and be bound by their terms and conditions.
 
    4.  RIGHTS AS SHAREHOLDER.  The Purchaser shall not be deemed to be the
holder of, or to have any of the rights of a holder with respect to, any Shares
subject for which such Option is exercised including, but not limited to, rights
to vote or to receive dividends unless and until the Purchaser has satisfied all
requirements for exercise of the Option pursuant to its terms, the certificates
evidencing such Shares have been issued and the Purchaser has become a record
holder of such Shares. A share certificate for the number of Shares so acquired
shall be issued to the Optionee as soon as practicable after exercise of the
Option. No adjustment will be made for a dividend or other right for which the
record date is prior to the date all the conditions set forth above are
satisfied, except as provided in Section 12 of the Plan.
 
    5.  TAX CONSULTATION.  Purchaser understands that Purchaser may suffer
adverse tax consequences as a result of Purchaser's purchase or disposition of
the Shares. Purchaser represents that Purchaser has consulted with any tax
consultants Purchaser deems advisable in connection with the purchase or
disposition of the Shares and that Purchaser is not relying on the Company for
any tax advice.
 
    6.  ENTIRE AGREEMENT; GOVERNING LAW.  The Plan and Option Agreement are
incorporated herein by reference. This Agreement, the Plan and the Option
Agreement constitute the entire agreement of the parties with respect to the
subject matter hereof and supersede in their entirety all prior undertakings and
agreements of the Company and Purchaser with respect to the subject matter
hereof, and this Agreement
 
                                       18
<PAGE>
may not be amended except by means of a writing signed by the Company and
Purchaser. This Agreement is governed by Texas law except for that body of law
pertaining to conflict of laws.
 
<TABLE>
<S>                                            <C>
Submitted by:                                  Accepted by:
 
PURCHASER:                                     CAPROCK COMMUNICATIONS CORP.
  Signature                                    By:
  Print Name                                   Its:
 
Address:                                       Address:
 
                                               Two Galleria Tower, Suite 1925
                                                 13455 Noel Road
                                                 Dallas, Texas 75240-6638
- --------------------------------------------
 
- --------------------------------------------
</TABLE>
 
                                       19
<PAGE>
                                                                    APPENDIX VII
 
                          CAPROCK COMMUNICATIONS CORP.
                        1998 DIRECTOR STOCK OPTION PLAN
 
    1.  PURPOSE.  The purpose of this 1998 Director Stock Option Plan (the
"Plan") of CapRock Communications Corp., a Texas corporation (the "Company"), is
to encourage ownership in the Company by outside directors of the Company whose
continued services are considered essential to the Company's future progress and
to provide them with a further incentive to remain as directors of the Company.
 
    2.  ELIGIBILITY.  Options (each, an "Option") to purchase shares ("Shares")
of the Company's common stock, par value $.01 per share ("Common Stock"), may be
granted only to Outside Directors. An "Outside Director" is a member of the
Board of Directors of the Company ("Board of Directors") that is not an Employee
(each, an "Optionee"). "Employee" means any person, including officers and
directors, employed by the Company or any Parent or Subsidiary of the Company.
The payment of a Director's fee by the Company shall not be sufficient to
constitute "employment" by the Company. A "Parent" means a "parent corporation,"
whether now or hereafter existing, as defined in Section 424(e) of the Internal
Revenue Code of 1986, as amended to date and as it may be hereafter amended from
time to time (the "Code"), and a "Subsidiary" means a "subsidiary corporation,"
whether now or hereafter existing, as defined in Section 424(f) of the Code.
 
    3.  ADMINISTRATION
 
        (a)  BOARD OF DIRECTORS.  The Board of Directors of the Company shall
    supervise and administer the Plan in compliance with the rules under Rule
    16b-3 or any successor rule thereto ("Rule 16b-3") promulgated under the
    Securities Exchange Act of 1934, as amended (the "Exchange Act"). All
    questions of interpretation of the Plan or of any Options issued under it
    shall be determined by the Board of Directors and such determination shall
    be final and binding upon all persons having an interest in the Plan. In the
    event the Board of Directors so determines, a committee designated by the
    Board of Directors will administer the Plan, which committee shall be
    constituted to comply with the rules under Rule 16b-3 relating to the
    administration of employee benefit plans for Outside Directors, and all
    references in the Plan to the Board of Directors shall be deemed to be a
    reference to such committee.
 
        (b)  POWERS OF THE BOARD OF DIRECTORS.  Subject to the provisions of the
    Plan and subject to the approval of any relevant authorities, including the
    approval, if required, of any national market system or established stock
    exchange upon which the Common Stock is quoted or listed, the Board of
    Directors shall have the authority in its discretion to, among other things:
 
            (i) determine the Fair Market Value of the Common Stock. For
       purposes of the Plan, the "Fair Market Value" means, as of any date, the
       value of Common Stock determined as follows: (A) if the Common Stock is
       listed on any established stock exchange or a national market system,
       including without limitation the Nasdaq National Market or The Nasdaq
       SmallCap Market of The Nasdaq Stock Market, its Fair Market Value shall
       be the closing sales price for such stock (or the closing bid, if no
       sales were reported) as quoted on such exchange or system for the last
       market trading day prior to the time of determination, as reported in The
       Wall Street Journal or such other source as the Board of Directors deems
       reliable; (B) if the Common Stock is regularly quoted by a recognized
       securities dealer but selling prices are not reported, its Fair Market
       Value shall be the mean between the high bid and low asked prices for the
       Common Stock on the last market trading day prior to the day of
       determination; or (C) in the absence of an established market for the
       Common Stock, the Fair Market Value thereof shall be determined in good
       faith by the Board of Directors.
 
            (ii) determine the recipients of Options and the number of Shares to
       be covered by each Option granted hereunder, including the number of
       Shares to be covered by Options to be granted to any Optionee;
<PAGE>
           (iii) determine the terms and conditions, not inconsistent with the
       terms of the Plan, of any award granted hereunder. Such terms and
       conditions include, but are not limited to, the exercise price, the time
       or times when Options may be exercised, any vesting, acceleration or
       waiver of forfeiture restrictions, and any restriction or limitation
       regarding any Option or the Shares relating thereto, based in each case
       on such factors as the Board of Directors, in its sole discretion, shall
       determine; and
 
            (iv) construe and interpret the terms of the Plan and awards granted
       pursuant to the Plan, and to amend or terminate the Plan as provided for
       in Section 10 hereof.
 
    4.  STOCK SUBJECT TO THE PLAN
 
        (a)  MAXIMUM NUMBER OF SHARES.  The maximum number of Shares which may
    be issued under the Plan shall be 400,000 shares of Common Stock, subject to
    adjustment as provided in Section 9 below.
 
        (b)  TERMINATION OF OPTIONS.  If any Option shall for any reason expire
    or otherwise terminate without having been exercised in full, the Shares not
    purchased under such Option shall revert to and again become available for
    issuance under the Plan unless the Plan shall have terminated; provided,
    however, that shares of Common Stock that have been actually issued under
    the Plan shall not be returned to the Plan and shall not become available
    for future issuance under the Plan. Shares that are withheld as payment of
    the Exercise Price of any Options (as set forth in Section 5(e)) shall be
    deemed issued for purposes of this Section.
 
        (c)  STOCK SUBJECT TO THE PLAN.  The stock subject to the Plan may be
    unissued shares or reacquired Shares, bought on the market or otherwise.
 
    5.  TERMS, CONDITIONS AND FORM OF OPTIONS
 
        (a)  OPTION AGREEMENT
 
        Each option agreement governing an Option ("Option Agreement") shall be
    substantially in the form attached hereto as EXHIBIT A. In the event any
    provisions of the Option Agreement and the Plan conflict, the provisions of
    the Plan shall control. The provisions of separate Options need not be
    identical, but each Option Agreement shall include (through incorporation of
    provisions hereof by reference in the Option or otherwise) the substance of
    each of the following provisions set forth in this Section 5.
 
        (b)  OPTIONS NON-TRANSFERABLE.  No Option shall be transferred,
    assigned, pledged or hypothecated by the Optionee or be made subject to
    execution, attachment or similar process otherwise than by will, by the laws
    of descent and distribution, or pursuant to a qualified domestic relations
    order, as defined in the Code or Title I of the Employee Retirement Security
    Act of 1974, as amended ("ERISA"), or the rules thereunder ("QDRO"), and
    shall be exercised during the lifetime of the Optionee only by such person
    or any transferee pursuant to a QDRO.
 
        (c)  EXERCISE PERIOD.  Subject to Section 7, each Option granted
    hereunder shall be exercisable at such times and under such conditions as
    determined by the Board of Directors and as shall be permissible under the
    terms of the Plan. The total number of Shares subject to an Option may, but
    need not, be allotted in periodic installments (which may, but need not, be
    equal). The Option Agreement may provide that from time to time during each
    of such installment periods, the Option may become exercisable with respect
    to some or all of the Shares allotted to that period and may be exercised
    with respect to some or all of the Shares allotted to such period and/or any
    prior period as to which the Option became vested but was not fully
    exercised. In the event an Optionee ceases to serve as a director of the
    Company, each such Option may be exercised by the Optionee or by a permitted
    transferee (or, in the event of such person's death, by such person's
    administrator, executor or heirs) at any time within 3 months after the
    Optionee ceases to serve as a director, but only to the extent
 
                                       2
<PAGE>
    such Option was exercisable at the time of such cessation of service.
    Notwithstanding the foregoing, no Option shall be exercisable after the
    expiration of 10 years from the date of grant.
 
        (d)  EXERCISE PROCEDURE.  Subject to Section 12, an Option shall be
    deemed to be exercised when written notice ("Exercise Notice") of such
    exercise has been given to the Company in accordance with the terms of the
    Option Agreement by the person or entity entitled to exercise the Option and
    full payment for the Shares with respect to which the Option is exercised
    has been received by the Company. Each person or entity who exercises an
    Option shall, upon notification of the amount due (if any) and prior to or
    concurrent with delivery of the certificate representing the Shares, pay by
    cash or check to the Company all amounts necessary to satisfy applicable
    federal, state and local tax withholding requirements. No Option may at any
    time be exercised with respect to a fractional share.
 
        (e)  PAYMENT OF EXERCISE PRICE.  The purchase price of stock acquired
    pursuant to an Option shall be paid, to the extent permitted by applicable
    statutes and regulations at the time the Option is exercised, either (i) in
    cash or check, or (ii) at the discretion of the Board of Directors, in one
    or a combination of the following ways (which may be in combination with or
    in lieu of payment by cash or check): (A) by delivery to the Company of
    other Shares of Common Stock of the Company to be valued at their Fair
    Market Value on the exercise date, (B) according to a deferred payment or
    other arrangement with the person to whom the Option is granted or to whom
    the Option is transferred pursuant to Section 5(b), (C) withholding of
    Shares that would otherwise be issued upon the exercise of the Option,
    valued at their Fair Market Value on the exercise date, or (D) in any other
    form of legal consideration that may be acceptable to the Board of
    Directors. In making its determination as to the type of consideration to
    accept, the Board of Directors shall consider if acceptance of such
    consideration may be reasonably expected to benefit the Company. In
    addition, such consideration shall be accompanied by the delivery by the
    Optionee of a properly executed exercise notice together with such other
    documentation as the Board of Directors and a broker, if applicable, shall
    require to effect an exercise of the Option and delivery to the Company of
    the sale or loan proceeds required to pay the exercise price.
 
    6.  NONSTATUTORY OPTIONS.  All Options granted under the Plan shall be
nonqualified Options not entitled to special tax treatment under Section 422 of
the Code.
 
    7.  EFFECTIVE DATE AND TERM
 
    The Plan was adopted by the Board of Directors of the Company on
            , 1998 and by the shareholders of the Company on             , 1998
and became effective upon its adoption. The Plan shall continue in effect until
it is terminated by action of the Board, but such termination shall not affect
the terms of any outstanding Options.
 
    8.  LIMITATION OF RIGHTS
 
        (a)  NO RIGHT TO CONTINUE AS DIRECTOR.  Neither the Plan, nor the
    granting of an Option nor any other action taken pursuant to the Plan, shall
    constitute or be evidence of any agreement or understanding, express or
    implied, that the Company will retain a director for any period of time.
 
        (b)  NO SHAREHOLDERS' RIGHTS FOR OPTIONEES.  Neither an Optionee nor any
    person to whom an Option is transferred pursuant to the Plan shall be deemed
    to be the holder of, or to have any of the rights of a holder with respect
    to, any Shares subject to such Option including, but not limited to, rights
    to vote or to receive dividends, unless and until such person has satisfied
    all requirements for exercise of the Option pursuant to its terms, the
    certificates evidencing such Shares have been issued and such person has
    become a record holder of such Shares.
 
    9.  ADJUSTMENTS UPON CHANGES IN CAPITALIZATION OR MERGER
 
        (a)  CHANGES IN CAPITALIZATION.  Subject to any required action by the
    shareholders of the Company, the number of shares of Common Stock covered by
    each outstanding Option and the
 
                                       3
<PAGE>
    number of shares of Common Stock that have been authorized for issuance
    under the Plan but as to which no Options have yet been granted or which
    have been returned to the Plan upon cancellation or expiration of an Option,
    as well as the price per share of Common Stock covered by each such
    outstanding Option, shall be proportionately adjusted for any increase or
    decrease in the number of issued shares of Common Stock resulting from a
    stock split, reverse stock split, stock dividend, combination or
    reclassification of the Common Stock, or any other increase or decrease in
    the number of issued shares of Common Stock effected without receipt of
    consideration by the Company. The conversion of any convertible securities
    of the Company shall not be deemed to have been "effected without receipt of
    consideration." Such adjustment shall be made by the Board of Directors,
    whose determination in that respect shall be final, binding and conclusive.
    Except as expressly provided herein, no issuance by the Company of shares of
    stock of any class, or securities convertible or exchangeable into shares of
    stock of any class, shall affect, and no adjustment by reason thereof shall
    be made with respect to, the number or price of shares of Common Stock
    subject to an Option.
 
        (b)  DISSOLUTION OR LIQUIDATION.  In the event of the proposed
    dissolution or liquidation of the Company, the Board of Directors shall
    notify the Optionee at least fifteen (15) days prior to such proposed
    action. To the extent it has not been previously exercised, the Option shall
    terminate immediately prior to the consummation of such proposed action;
    provided, however, that the Board of Directors may, in the exercise of its
    sole discretion in such instances, declare that any Option shall terminate
    as of an earlier date fixed by the Board of Directors and give each Optionee
    the right to exercise his or her Option as to all or any part of the Shares
    covered by such Option, including Shares as to which the Option would not
    otherwise be exercisable.
 
        (c)  MERGER OR ASSET SALE.  Subject to Section 9(d), in the event of the
    merger of the Company into, or the consolidation of the Company with,
    another corporation in which the shareholders of the Company receive cash or
    securities of another issuer, or any combination thereof, in exchange for
    their shares of Common Stock, or the sale of all or substantially all of the
    assets of the Company, each outstanding Option shall be assumed or an
    equivalent option or right substituted by the successor corporation or an
    Affiliate of the successor corporation. In the event that the successor
    corporation refuses to assume or substitute for the Option, the Optionee
    shall fully vest in and have the right to exercise the Option (provided it
    has not already terminated) as to all of the Shares covered by such Option,
    including Shares as to which it would not otherwise be vested or
    exercisable. If an Option becomes fully vested and exercisable in lieu of
    assumption or substitution in the event of a merger, consolidation or sale
    of assets, the Board of Directors shall notify the Optionee that the Option
    shall be fully exercisable for a period of fifteen (15) days from the date
    of such notice, and the Option shall terminate upon the expiration of such
    period. For the purposes of this paragraph, the Option shall be considered
    assumed if, following the merger, consolidation or sale of assets, the
    option substituted for such Option confers the right to purchase or receive,
    for each Share subject to the Option immediately prior to the merger,
    consolidation or sale of assets, the per Share consideration (whether stock,
    cash, or other securities or property) received in the merger, consolidation
    or sale of assets by holders of Common Stock (and if holders were offered a
    choice of consideration, the type of consideration chosen by the holders of
    a majority of the outstanding Shares); provided, however, that if such
    consideration received in the merger, consolidation or sale of assets is not
    solely common stock of the successor corporation or its Parent (if any), the
    Board of Directors may, with the consent of the successor corporation,
    provide for the consideration to be received upon the exercise of the
    Option, for each Share subject to the Option, to be solely common stock of
    the successor corporation or its Parent (if any) equal in fair market value
    to the per Share consideration received by holders of Common Stock in the
    merger, consolidation or sale of assets. For purposes of this subsection
    (c), "Affiliate" means, with respect to any individual or entity, any Parent
    or Subsidiary of such individual or entity, whether such Parent or
    Subsidiary is now or hereafter existing.
 
                                       4
<PAGE>
        (d)  FURTHER ADJUSTMENTS.  In the event of any change of a type
    described in paragraphs (a) or (c) above, the Board of Directors shall make
    any further adjustment to the maximum number of shares which may be acquired
    under the Plan pursuant to the exercise of Options, the maximum number of
    Shares for which Options may be granted to any one employee and the number
    of Shares and price per Share subject to outstanding Options as shall be
    equitable to prevent dilution or enlargement of rights under such Options,
    and the determination of the Board of Directors as to these matters shall be
    conclusive and binding on the Optionee.
 
        (e)  NO LIMITATION ON RIGHT TO MERGE, ETC.  The grant of Options
    pursuant to the Plan shall not restrict in any way the right or power of the
    Company to make adjustments, reclassifications, reorganizations or changes
    of its capital or business structure or to merge, consolidate, dissolve,
    liquidate, or sell or transfer all or any part of its business or assets.
 
    10.  AMENDMENT AND TERMINATION OF THE PLAN.
 
        (a) The Board of Directors may at any time amend, alter, suspend or
    discontinue the Plan, but no amendment, alteration, suspension or
    discontinuation shall be made which would impair the rights of any Optionee
    under any grant theretofore made, without his or her consent. No amendment
    of the Plan shall, without approval of the shareholders of the Company, (i)
    increase the maximum number of Shares which may be subject to Options under
    the Plan or the maximum number of Shares subject to Options that may be
    granted to any individual Optionee under the Plan, (ii) modify the
    requirements as to eligibility for Options under the Plan or (iii)
    materially increase the benefits to Optionees under the Plan. In addition,
    to the extent necessary and desirable to comply with Rule 16b-3, Section 422
    of the Code or Section 162(m) of the Code (or any other Applicable Laws,
    including the requirements of the NASD or any stock exchange upon which the
    Shares may then be listed or any automatic quotation system upon which the
    Shares may then be quoted), the Company shall obtain shareholder approval of
    any Plan amendment in such a manner and to such a degree as required. For
    purposes of this subsection (a), "Applicable Laws" means the legal
    requirements relating to the administration of stock option plans under U.S.
    state corporate laws, U.S. federal and state securities laws, the Code and
    the applicable laws of any foreign country or jurisdiction where Options
    are, or will be, granted under the Plan.
 
        (b) Any amendment or termination of the Plan shall not affect Options
    already granted, and such Options shall remain in full force and effect as
    if the Plan had not been amended or terminated, unless mutually agreed
    otherwise between the Optionee and the Board of Directors, which agreement
    must be in writing and signed by the Optionee and the Company.
 
    11.  NOTICE
 
    Any written notice to the Company required by any of the provisions of the
Plan shall be addressed to the Secretary of the Company and shall become
effective when it is received. Any written notice to Optionees required by any
provisions of the Plan shall be addressed to the Optionee at the address on file
with the Company and shall become effective three days after it is mailed by
certified mail, postage prepaid to such address or at the time of delivery if
delivered sooner by messenger or overnight courier.
 
    12.  REGULATORY APPROVAL, COMPLIANCE AND OTHER MATTERS.
 
        (a) Options shall not be exercised, and Shares shall not be issued upon
    such exercise, unless the exercise of such Option and the issuance and
    delivery of such Shares shall comply with all relevant provisions of law,
    including, without limitation, any applicable state securities laws, the
    Securities Act of 1933, as amended ("the Securities Act"), the Exchange Act,
    the rules and regulations thereunder and the requirements of any stock
    exchange upon which such Shares may then be listed or approved for listing
    upon notice of issuance, and such issuance shall be further subject to the
    approval of counsel for the Company with respect to such compliance,
    including the availability of an exemption from registration for the
    issuance and sale of such Shares. The inability of the Company to obtain
 
                                       5
<PAGE>
    from any regulatory body the authority deemed by the Company to be necessary
    for the lawful issuance and sale of any Shares under this Plan, or the
    unavailability of an exemption from registration for the issuance and sale
    of any Shares under this Plan, shall relieve the Company of any liability
    with respect to the non-issuance or sale of such Shares.
 
        (b)  OTHER CONDITIONS.  The Company may require any Optionee, or any
    person or entity to whom an Option is transferred pursuant to the Plan, as a
    condition to exercising any such Option, (i) to give written assurances
    satisfactory to the Company as to the Optionee's knowledge and experience in
    financial and business matters and/or to employ a purchaser representative
    reasonably satisfactory to the Company who is knowledgeable and experienced
    in financial and business matters, and that he or she is capable of
    evaluating, alone or together with the purchaser representative, the merits
    and risks of exercising the Option; (ii) to give written assurances
    satisfactory to the Company stating that such person is acquiring the Shares
    subject to the Option for such person's own account and not with any present
    intention of selling or otherwise distributing the Shares; and (iii) to
    deliver such other documentation as may be necessary to comply with federal
    and state securities laws. These requirements, and any assurances given
    pursuant to such requirements, shall be inoperative if (i) the issuance of
    the Shares upon the exercise of the Option has been registered under a then
    currently effective registration statement under the Securities Act and all
    applicable state securities laws, or (ii) as to any particular requirement,
    a determination is made by counsel for the Company that such requirement
    need not be met in the circumstances under the then applicable securities
    laws. The Company may, upon advice of counsel to the Company, place legends
    on stock certificates issued under the Plan as such counsel deems necessary
    or appropriate in order to comply with applicable securities laws,
    including, but not limited to, legends restricting the transfer of the
    Shares and may enter stop transfer orders against the transfer of the Shares
    issuable upon the exercised Options. The Company has no obligation to
    undertake registration of Options or the Shares issuable upon the exercise
    of Options.
 
        (c)  RULE 16B-3.  With respect to persons subject to Section 16 of the
    Exchange Act, transactions under the Plan are intended to comply with all
    applicable conditions of Rule 16b-3 and with respect to such persons all
    transactions shall be subject to such conditions regardless of whether they
    are expressly set forth in the Plan or the Option Agreement. To the extent
    any provision of the Plan or action by the Board of Directors fails to so
    comply, it shall not apply to such persons or their transactions and shall
    be deemed null and void, to the extent permitted by law and deemed advisable
    by the Board of Directors.
 
    13.  GOVERNING LAW.  The Plan and all rights and obligations thereunder
shall be construed in accordance with and governed by the laws of the State of
Texas without regard to its conflict of laws rules.
 
                                       6
<PAGE>
                                                                       EXHIBIT A
 
                          CAPROCK COMMUNICATIONS CORP.
                        DIRECTOR STOCK OPTION AGREEMENT
 
    THIS DIRECTOR STOCK OPTION AGREEMENT (this "Agreement") is entered into
between CapRock Communications Corp., a Texas corporation (the "Company"), and
the person named on the signature page hereof ("Optionee") with the date of
grant of the option as set forth on such signature page.
 
    To carry out the purposes of the CAPROCK COMMUNICATIONS CORP. 1998 DIRECTOR
STOCK OPTION PLAN (the "Plan"), by affording Optionee the opportunity to
purchase shares of common stock of the Company ("Common Stock"), and in
consideration of the mutual agreements and other matters set forth herein and in
the Plan, the Company and Optionee hereby agree as follows:
 
    1.  GRANT OF OPTION.  The Company hereby irrevocably grants to Optionee the
right and option ("Option") to purchase all or any part of the number of shares
of Common Stock as set forth on the signature page hereto, on the terms and
conditions set forth herein and in the Plan. The Optionee may review a copy of
the Plan at the office of the Secretary of the Company at Two Galleria Tower,
Suite 1925, 13455 Noel Road, Dallas, Texas 75240-6638. This Option shall not be
treated as an incentive stock option within the meaning of Section 422(b) of the
Internal Revenue Code of 1986, as amended (the "Code").
 
    2.  VESTING SCHEDULE.  Except only as specifically provided elsewhere
herein, the Option shall be exercisable in the following cumulative
installments:
 
    [Note: To be completed upon grant of Options.]
 
    3.  PURCHASE PRICE.  The purchase price of Common Stock purchased pursuant
to the exercise of this Option is set forth on the signature page hereto.
 
    4.  EXERCISE OF OPTION.  This Option is exercisable by delivery of an
exercise notice, in the form attached as EXHIBIT A (the "Exercise Notice"),
which shall state the election to exercise the Option, the number of Shares in
respect of which the Option is being exercised (the "Exercised Shares"), and
such other representations and agreements as may be required by the Company
pursuant to the provisions of the Plan. The Exercise Notice shall be signed by
the Optionee and shall be delivered in person or by certified mail to the
Secretary of the Company. The Exercise Notice shall be accompanied by payment of
the aggregate Exercise Price as to all Exercised Shares.
 
    5.  METHOD OF PAYMENT.  The purchase price of Exercised Shares acquired
pursuant to an Option shall be paid as set forth in the Plan.
 
    6.  NONTRANSFERABLE AND TERMINATION.  This Option is not transferable by
Optionee otherwise than by will or the laws of descent and distribution, or
pursuant to a qualified domestic relations order, and may be exercised only by
Optionee during Optionee's lifetime, except as provided in the Plan.
 
    7.  TERM.  This Option shall not be exercisable in any event after the
expiration of ten years from the date of grant hereof. The purchase price of
shares as to which this Option is exercised shall be paid in full at the time of
exercise for the consideration set forth in the Plan. No fraction of a share of
Common Stock shall be issued by the Company upon exercise of an Option or
accepted by the Company in payment of the purchase price thereof.
 
    8.  WITHHOLDING OF TAX.  To the extent that the exercise of this Option or
the disposition of shares of Common Stock acquired by exercise of this Option
obligates the Company to withhold federal, state or local taxes the Optionee
shall pay such amounts to the Company upon request by delivery of cash or check
or in such other manner as is permitted by the Plan.
 
    9.  COMPLIANCE WITH SECURITIES LAWS.  Optionee agrees that the shares of
Common Stock which Optionee may acquire by exercising this Option will not be
sold or otherwise disposed of in any manner which would constitute a violation
of any applicable securities laws, whether federal or state. Optionee also
<PAGE>
agrees (i) that the certificates representing the shares of Common Stock
purchased under this Option may bear such legend or legends as the Board of
Directors of the Company deems appropriate in order to assure compliance with
applicable securities laws, (ii) that the Company may refuse to register the
transfer of the shares of Common Stock purchased under this Option on the stock
transfer records of the Company if such proposed transfer would in the opinion
of counsel to the Company constitute a violation of any applicable securities
law and (iii) that the Company may give related instructions to its transfer
agent, if any, to stop registration of the transfer of the shares of Common
Stock purchased under this Option.
 
    10.  TAX CONSEQUENCES.  The grant and/or exercise of the Option will have
federal and state income tax consequences. THE OPTIONEE SHOULD CONSULT A TAX
ADVISER UPON THE GRANT OF THE OPTION AND BEFORE EXERCISING THIS OPTION OR
DISPOSING OF THE SHARES, PARTICULARLY WITH RESPECT TO HIS OR HER STATE'S TAX
LAWS.
 
    11.  BINDING EFFECT.  This Agreement shall be binding upon and inure to the
benefit of any successors to the Company and all persons lawfully claiming under
Optionee.
 
    12.  ENTIRE AGREEMENT AND GOVERNING LAW.  The Plan is incorporated herein by
reference as a part of this Agreement. The Plan and this Agreement constitute
the entire agreement of the parties with respect to the subject matter hereof
and supersede in their entirety all prior undertakings and agreements of the
Company and Optionee with respect to the subject matter hereof, and this
Agreement may not be amended except by means of a writing signed by the Company
and Optionee. In the event of a conflict between the terms and conditions of
this Agreement and the Plan, the terms and conditions of the Plan shall control.
This Agreement is governed by Texas law except for that body of law pertaining
to conflict of laws.
 
    13.  MISCELLANEOUS.  Optionee acknowledges receipt of a copy of the Plan and
hereby warrants and represents that he or she has reviewed the Plan and this
Agreement in their entirety, has had an opportunity to obtain the advice of
counsel prior to executing this Agreement and fully understands all of the
provisions of the Plan and this Agreement. Optionee hereby agrees to accept as
binding, conclusive and final all decisions or interpretations of the Board of
Directors upon any questions relating to the Plan and this Agreement. Optionee
further agrees to notify the Company upon any change in the residence address
indicated below.
 
                                       2
<PAGE>
    IN WITNESS WHEREOF, the Company has caused this Agreement to be duly
executed by its officer thereunto duly authorized, and Optionee has executed
this Agreement, all as of the day and year first above written.
 
<TABLE>
<S>                                     <C>
                                        CAPROCK COMMUNICATIONS CORP.
 
                                                                             By:
                                        ----------------------------------------
                                                                           Name:
                                        ----------------------------------------
                                                                          Title:
                                        ----------------------------------------
 
                                        ----------------------------------------
                                        --------------------- , Optionee
 
                                        Address:
                                        ----------------------------------------
                                        ----------------------------------------
</TABLE>
 
<TABLE>
<S>                                     <C>                         <C>
                                        Date of Grant:
                                                                     -----------
 
                                        Exercise Price Per Share:
                                                                     -----------
 
                                        Total Number of Optioned
                                        Shares:
                                                                     -----------
 
                                        Total Exercise Price:
                                                                     -----------
 
                                        Type of Option:             Nonqualified
                                                                    Stock Option
 
                                        Expiration Date:
                                                                     -----------
</TABLE>
 
                                       3
<PAGE>
                          CAPROCK COMMUNICATIONS CORP.
                        1998 DIRECTOR STOCK OPTION PLAN
                                EXERCISE NOTICE
 
CapRock Communications Corp.
Two Galleria Tower, Suite 1925
13455 Noel Road
Dallas, Texas 75240-6638
Attention: Secretary
 
    1.  EXERCISE OF OPTION.  Effective as of today,               , 199 , the
undersigned ("Purchaser") hereby elects to purchase       shares (the "Shares")
of the Common Stock of CapRock Communications Corp. (the "Company") under and
pursuant to the 1998 Director Stock Option Plan (the "Plan") and the Director
Stock Option Agreement dated               , 199 (the "Option Agreement"). The
per share exercise price for the Shares shall be $      , as specified in the
Option Agreement.
 
    2.  DELIVERY OF PAYMENT.  Purchaser herewith delivers to the Company the
full purchase price for the Shares or               .
 
    3.  REPRESENTATIONS OF PURCHASER.  Purchaser acknowledges that Purchaser has
received, read and understood the Plan and the Option Agreement and agrees to
abide by and be bound by their terms and conditions.
 
    4.  RIGHTS AS SHAREHOLDER.  Until the issuance (as evidenced by the
appropriate entry on the books of the Company or of a duly authorized transfer
agent of the Company) of the stock certificate evidencing such Shares, no right
to vote or receive dividends or any other rights as a shareholder shall exist
with respect to the Shares covered by such Option, notwithstanding the exercise
of the Option. A share certificate for the number of Shares so acquired shall be
issued to the Purchaser as soon as practicable after exercise of the Option. No
adjustment will be made for a dividend or other right for which the record date
is prior to the date the stock certificate is issued, except as provided in
Section 9 of the Plan.
 
    5.  TAX CONSULTATION.  Purchaser understands that Purchaser may suffer
adverse tax consequences as a result of Purchaser's purchase or disposition of
the Shares. Purchaser represents that Purchaser has consulted with any tax
consultants Purchaser deems advisable in connection with the purchaser or
disposition of the Shares and that Purchaser is not relying on the Company for
any tax advice.
 
    6.  ENTIRE AGREEMENT; GOVERNING LAW.  The Plan and the Option Agreement are
incorporated herein by reference. This Exercise Notice, the Plan and the Option
Agreement constitute the entire agreement of the parties with respect to the
subject matter hereof and supersede in their entirety all prior undertakings and
agreements of the Company and Purchaser with respect to the subject matter
hereof, and this Exercise
<PAGE>
Notice may not be amended except by means of a writing signed by the Company and
Purchaser. This Exercise Notice is governed by Texas law except for that body of
law pertaining to conflict of laws.
 
<TABLE>
<S>                                         <C>
Submitted by:                               Accepted by:
 
PURCHASER                                   CAPROCK COMMUNICATIONS CORP.
 
                                            By:
- ------------------------------------        ------------------------------------
Signature
 
                                            Its:
- ------------------------------------        ------------------------------------
Print Name
 
ADDRESS:                                    ADDRESS:
 
                                            Two Galleria Tower, Suite 1925
- ------------------------------------
                                            13455 Noel Road
                                            Dallas, Texas 75240-6638
- ------------------------------------
</TABLE>
 
                                       2
<PAGE>
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
    Article XII of the Registrant's Amended and Restated Articles of
Incorporation provides the following:
 
       "A director of the Corporation shall not be liable to the Corporation or
       its shareholders for monetary damages for an act or omission in the
       director's capacity as a director, except that this Article shall not
       authorize the elimination or limitation of the liability of a director to
       the extent the director is found liable for:
 
           (1) a breach of the director's duty of loyalty to the Corporation or
       its shareholders;
 
           (2) an act or omission not in good faith that constitutes a breach of
       duty of the director to the Corporation or an act or omission that
       involves intentional misconduct or a knowing violation of the law;
 
           (3) a transaction from which the director received an improper
       benefit, whether or not the benefit resulted from an action taken within
       the scope of the director's office;
 
           (4) an act or omission for which the liability of a director is
       expressly provided by an applicable statute."
 
    Article XI of the Registrant's Amended and Restated Articles of
Incorporation provides the following:
 
       "The directors and officers of the Corporation shall be indemnified by
       the Corporation in a manner and to the maximum extent permitted by
       applicable state or federal law as in effect from time to time."
 
    Section 7.06 of the Registrant's Amended and Restated Bylaws provides the
following:
 
       "The Corporation shall have the authority to and shall indemnify and
       advance expenses to the Directors, officers, employees, and agents of the
       Corporation or any other persons serving at the request of the
       Corporation in such capacities in a manner and to the maximum extent
       permitted by applicable state or federal law. The Corporation may
       purchase and maintain liability insurance or make other arrangements for
       such obligations to the extent permitted by the Texas Business
       Corporation Act."
 
    The Texas Business Corporation Act permits, and in some cases requires,
corporations to indemnify officers, directors, agents and employees who are or
have been a party to or are threatened to be made a party to litigation against
judgments, penalties (including excise and similar taxes), fines, settlements
and reasonable expenses under certain circumstances.
 
ITEM 21. EXHIBITS
 
    The following exhibits are filed herewith.
 
<TABLE>
<S>        <S>
      2.1  --Agreement and Plan of Merger and Plan of Exchange, dated as of February 16, 1998,
             by and among IWL Communications, Incorporated, the Registrant, IWL Acquisition
             Corp., CapRock Communications Corp., CapRock Acquisition Corp., and CapRock Fiber
             Network, Ltd. (collectively, the "Parties"). The schedules to the Agreement and
             Plan of Merger and Plan of Exchange and the appendices thereto have been omitted.
             The Company will furnish supplementally to the Securities and Exchange Commission
             any of the schedules or appendices upon request. (Included as Appendix I to the
             Joint Proxy Statement/Prospectus.)
</TABLE>
 
                                      II-1
<PAGE>
<TABLE>
<S>        <S>
      2.2  --First Amendment to Agreement and Plan of Merger and Plan of Exchange, dated as of
             April 30, 1998, by and among the Parties. (Included as Appendix I to the Joint
             Proxy Statement/Prospectus.)
 
      2.3  --Second Amendment to Agreement and Plan of Merger and Plan of Exchange, dated as of
             June 19, 1998, by and among the Parties. (Included as Appendix I to the Joint Proxy
             Statement/Prospectus.)
 
      3.1  --Articles of Incorporation of the Registrant. (Included as Appendix III to the Joint
             Proxy Statement/Prospectus.)
 
      3.2  --Bylaws of the Registrant. (Included as Appendix IV to the Joint Proxy
             Statement/Prospectus.)
 
      4.1  --Form of Indenture.*
 
      4.2  --Form of Registration Rights Agreement.*
 
      4.3  --Common Stock Specimen for shares of Common Stock of the Registrant.*
 
      5.1  --Opinion of Munsch Hardt Kopf Harr & Dinan, P.C. regarding validity of securities
             being registered.*
 
      8.1  --Opinion of Munsch Hardt Kopf Harr & Dinan, P.C. regarding certain federal income
             tax matters.*
 
      8.2  --Opinion of Hughes & Luce LLP regarding certain federal income tax matters.*
 
     10.1  --CapRock Communications Corp. 1998 Equity Incentive Plan. (Included as Appendix V to
             the Joint Proxy Statement/Prospectus.)
 
     10.2  --CapRock Communications Corp. 1998 Director Stock Option Plan. (Included as Appendix
             VI to the Joint Proxy Statement/Prospectus.)
 
     10.3  --Form of IWL Shareholders Agreement, dated February 16, 1998, by and among CapRock
             Communications Corp. and each of the shareholders party thereto. (Incorporated by
             reference to Exhibit No. 99.2 to Form 8-K, dated February 16, 1998, as filed with
             the Commission on March 3, 1998.)
 
     10.4  --CapRock Owners Agreement, dated February 16, 1998, by and among the Registrant and
             each of the owners party thereto. (Incorporated by reference to Exhibit No. 99.3 to
             Form 8-K, dated February 16, 1998, as filed with the Commission on March 3, 1998.)
 
     10.5  --Employment Agreement between the Registrant and Ignatius W. Leonards.
 
     10.6  --Employment Agreement between the Registrant and Byron M. Allen.
 
     10.7  --Employment Agreement between the Registrant and Errol Olivier.
 
     10.8  --Employment Agreement between the Registrant and Richard H. Roberson.
 
     10.9  --Employment Agreement between the Registrant and Bryan Olivier.
 
    10.10  --Employment Agreement between the Registrant and Jere W. Thompson, Jr..
 
    10.11  --Employment Agreement between the Registrant and Scott L. Roberts.
 
    10.12  --Employment Agreement between the Registrant and Timothy W. Rogers.
 
    10.13  --Employment Agreement between the Registrant and Timothy M. Terrell.
 
    10.14  --Employment Agreement between the Registrant and Kevin W. McAleer.
 
    10.15  --Office Lease Agreement dated May 22, 1996, by and between Ellington Field, Ltd., a
             Texas limited partnership and IWL. (incorporated by reference to Exhibit 10.5 to
             the IWL Communications, Incorporated ("IWL") Registration Statement on Form S-1, as
             amended, File No. 333-22801.)
</TABLE>
 
                                      II-2
<PAGE>
<TABLE>
<S>        <S>
    10.16  --Satellite Information Network Service Agreement dated May 1, 1994, by and between
             IWL and the Information Telegraphy Agency of Russia ITAR-TASS.# (incorporated by
             reference to Exhibit 10.9 to IWL's Registration Statement on Form S-1, as amended,
             File No. 333-22801.)
 
    10.17  --Reseller Agreement dated December 31, 1996, by and between Alcatel Network Systems,
             Inc. and IWL.# (incorporated by reference to Exhibit 10.10 to IWL's Registration
             Statement on Form S-1, as amended, File No.333-22801.)
 
    10.18  --Form of Service Agreement. (incorporated by reference to Exhibit 10.12 to IWL's
             Registration Statement on Form S-1, as amended, File No. 333-22801.)
 
    10.19  --Lease Agreement dated November 18, 1996, by and between IWL and CLG, Inc.
             (incorporated by reference to Exhibit 10.13 to IWL's Registration Statement on Form
             S-1, as amended, File No. 333-22801.)
 
    10.20  --Promissory Note dated September 20, 1996 payable by IWL to First Bank and Trust,
             Cleveland, Texas. (incorporated by reference to Exhibit 10.15 to IWL's Registration
             Statement on Form S-1, as amended, File No. 333-22801.)
 
    10.21  --Loan Agreement and Security Agreement dated December 20, 1995 between IWL and
             Marine Midland Business Loans, Inc. (incorporated by reference to Exhibit 10.16 to
             IWL's Registration Statement on Form S-1, as amended, File No. 333-22801.)
 
    10.22  --Second Amendment to Loan and Security Agreement dated as of May 7, 1997, between
             IWL and Marine Midland Business Loans, Inc. (incorporated by reference to Exhibit
             10.9 to IWL's Registration Statement on Form S-1, as amended, File No. 333-22801.)
 
    10.23  --Promissory Note dated May 4, 1995 payable by IWL to Byron M. Allen. (incorporated
             by reference to Exhibit 10.17 to IWL's Registration Statement on Form S-1, as
             amended, File No. 333-22801.)
 
    10.24  --Letter Agreement dated February 28, 1997, by and between IWL and Marine Midland
             Bank as successor-in-interest to Marine Midland Business Loans, Inc. (incorporated
             by reference to Exhibit 10.18 to IWL's Registration Statement on Form S-1, as
             amended, File No. 333-22801.)
 
    10.25  --Credit Agreement, dated August 1, 1997, executed by and between IWL and Bank One,
             Texas, N.A. ("Lender"). (incorporated by reference to Exhibit 10.22 to IWL's Form
             10K for the year ending June 30, 1997, File No. 0-22293.)
 
    10.26  --Promissory Note, dated August 1, 1997, in the principal amount of $822,000.00,
             executed by IWL, and made payable to Lender. (incorporated by reference to Exhibit
             10.23 to IWL's Form 10K for the year ending June 30, 1997, File No. 0-22293.)
 
    10.27  --Promissory Note, dated August 1, 1997, in the principal amount of $605,000.00,
             executed by IWL, and made payable to Lender. (incorporated by reference to Exhibit
             10.24 to IWL's Form 10K for the year ending June 30, 1997, File No. 0-22293.)
 
    10.28  --Collateral Assignment and Security Agreement, dated August 1, 1997, executed by
             Registrant, as assignor, and Lender, as assignee. (incorporated by reference to
             Exhibit 10.25 to IWL's Form 10K for the year ending June 30, 1997, File No.
             0-22293.)
 
    10.29  --Revolving Credit Agreement, dated August 1, 1997, executed by and between IWL and
             Lender. (incorporated by reference to Exhibit 10.26 to IWL's Form 10K for the year
             ending June 30, 1997, File No. 0-22293.)
 
    10.30  --Promissory Note, dated August 1, 1997, in the principal amount of $5,000,000.00,
             executed by IWL, and made payable to Lender. (incorporated by reference to Exhibit
             10.27 to IWL's Form 10K for the year ending June 30, 1997, File No. 0-22293.)
</TABLE>
 
                                      II-3
<PAGE>
<TABLE>
<S>        <S>
    10.31  --Security Agreement, dated August 1, 1997, executed by IWL, as debtor, and Lender,
             as secured party. (incorporated by reference to Exhibit 10.28 to IWL's Form 10K for
             the year ending June 30, 1997, File No. 0-22293.)
 
    10.32  --Amended and Restated Credit Agreement, dated August 28, 1997, executed by and
             between IWL and Lender. (incorporated by reference to Exhibit 10.29 to IWL's Form
             10K for the year ending June 30, 1997, File No. 0-22293.)
 
    10.33  --Promissory Note, dated August 28, 1997, in the principal amount of $1,055,000.00,
             executed by IWL, and made payable to Lender. (incorporated by reference to Exhibit
             10.30 to IWL's Form 10K for the year ending June 30, 1997, File No. 0-22293.)
 
    10.34  --Telecommunications Equipment Lease Agreement dated as of June 1, 1997 between IWL
             and Diamond Offshore Company. (incorporated by reference to Exhibit 10.4 to IWL's
             Form 10K for the year ending June 30, 1997, File No. 0-22293.)#
 
    10.35  --Sublease dated November 22, 1994 by and between CapRock Communications Corp. (n/k/a
             CapRock Telecommunications Corp. ("CapRock")) and Arkwright Mutual Insurance
             Company.
 
    10.36  --Loan and Security Agreement dated March 14, 1996 by and between CapRock and Bank
             One, as amended.
 
    10.37  --Sixth Renewal Extension $2,500,000 Promissory Note dated December 31, 1997 payable
             by CapRock to Bank One.
 
    10.38  --Promissory Note dated April 1, 1994, in the principal amount of $50,000 by CapRock
             payable to Timothy M. Terrell.
 
    10.39  --Promissory Note dated April 1, 1994, in the principal amount of $50,000 by CapRock
             payable to Timothy W. Rogers.
 
    10.40  --Promissory Note dated April 1, 1994, in the principal amount of $50,000 by CapRock
             payable to Scott L. Roberts.
 
    10.41  --Form of CapRock Communications Commercial Application.
 
    10.42  --Form of CapRock Communications Commercial Agent Application.
 
    10.43  --Unlimited Guaranty dated March 9, 1996 by Jere W. Thompson, Jr. for the benefit of
             Bank One.
 
    10.44  --Loan Agreement dated July 1, 1996 by and between CapRock Fiber Network, Ltd. (the
             "Partnership") and Bank One, Texas, National Association.
 
    10.45  --$10,000,000 Promissory Note dated July 1, 1996 by and between the Partnership and
             Bank One.
 
    10.46  --Guaranty dated July 1, 1996 by CapRock Systems, Inc. in favor of Bank One.
 
    10.47  --Guaranty dated July 1, 1996 by Mark Langdale in favor of Bank One.
 
    10.48  --Guaranty dated July 1, 1996 by Jere W. Thompson, Jr. in favor of Bank One.
 
    10.49  --Form of Note Purchase Agreement by and among the Registrant and various initial
             purchasers.*
 
    10.50  --Form of Contribution Agreement by the General Partner of the Partnership.
 
     16.1  --Letter re: Change in Accountants.
 
     21.1  --Subsidiaries of the Registrant.
 
     23.1  --Consent of KPMG Peat Marwick LLP
 
     23.2  --Consent of KPMG Peat Marwick LLP
 
     23.3  --Consent of KPMG Peat Marwick LLP
 
     23.4  --Consent of KPMG Peat Marwick LLP
</TABLE>
 
                                      II-4
<PAGE>
<TABLE>
<S>        <S>
     23.5  --Consent of Burds Reed & Mercer, P.C. (included in Exhibit 16.1)
 
     23.6  --Consent of Munsch Hardt Kopf Harr & Dinan, P.C. (Included in the opinions filed as
             Exhibits 5.1 and 8.1 to this Registration Statement).
 
     23.7  --Consent of Hughes & Luce LLP (Included in the opinion filed as Exhibit 8.2 to this
             Registration Statement).
 
     23.8  --Consent of Cruttenden Roth Incorporated.
 
     24.1  --Power or Attorney (included in the signature page hereto).
 
     27.1  --Financial Data Schedule.
 
     99.1  --IWL Communications, Incorporated Proxy/Voting Instruction Card.
 
     99.2  --CapRock Telecommunications Corp. Proxy/Voting Instruction Card.
 
     99.3  --Consent of John R. Harris.
</TABLE>
 
- ------------------------
 
*   To be filed by amendment.
 
#  Confidential treatment was granted.
 
ITEM 22. UNDERTAKINGS
 
    (a) The undersigned registrant hereby undertakes as follows: that prior to
any public reoffering of the securities registered hereunder through use of a
prospectus which is a part of this registration statement, by any person or
party who is deemed to be an underwriter of this registration statement, by any
person or party who is deemed to be an underwriter within the meaning of Rule
145(c), the issuer undertakes that such reoffering prospectus will contain the
information called for by the applicable registration form with respect to
reofferings by persons who may be deemed underwriters, in addition to the
information called for by the other items of the applicable form.
 
    (b) The registrant undertakes that every prospectus: (i) that is filed
pursuant to paragraph (1) immediately preceding, or (ii) that purports to meet
the requirements of Section 10(a)(3) of the Act and is used in connection with
an offering of securities subject to Rule 415, will be filed as a part of an
amendment to the registration statement and will not be used until such
amendment is effective, and that, for purposes of determining any liability
under the Securities Act of 1933, each such post-effective amendment shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
 
    (c) The undersigned registrant hereby undertakes to respond to requests for
information that is incorporated by reference into the prospectus pursuant to
Items 4, 10(b), 11, or 13 of this form, within one business day of receipt of
such request, and to send the incorporated documents by first class mail or
other equally prompt means. This includes information contained in documents
filed subsequent to the effective date of the registration statement through the
date of responding to the request.
 
    (d) The undersigned registrant hereby undertakes to supply by means of a
post-effective amendment all information concerning a transaction, and the
company being acquired involved therein, that was not the subject of and
included in the registration statement when it became effective.
 
                                      II-5
<PAGE>
                                   SIGNATURES
 
    Pursuant to the requirements of the Securities Act, the Registrant has duly
caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Dallas, State of Texas,
on the 22nd day of June, 1998.
 
<TABLE>
<S>                             <C>  <C>
                                CAPROCK COMMUNICATIONS CORP.
 
                                By:          /s/ JERE W. THOMPSON, JR.
                                     -----------------------------------------
                                               Jere W. Thompson, Jr.
                                              CHIEF EXECUTIVE OFFICER
</TABLE>
 
    Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated. Each person whose signature appears below
in so signing also makes, constitutes and appoints Jere W. Thompson, Jr. and
Ignatius W. Leonards, and each of them acting alone, his true and lawful
attorney-in-fact, with full power of substitution, for him in any and all
capacities, to execute and cause to be filed with the Securities and Exchange
Commission any or all amendments and post-effective amendments to this
Registration Statement, with exhibits thereto and other documents in connection
therewith, and hereby ratifies and confirms all that said attorney-in-fact or
his substitute or substitutes may do or cause to be done by virtue hereof.
 
          SIGNATURE                       TITLE                    DATE
- ------------------------------  --------------------------  -------------------
 
                                Chief Executive Officer,
  /s/ JERE W. THOMPSON, JR.       Chairman of the Board,
- ------------------------------    and Director (Principal     June 22nd, 1998
    Jere W. Thompson, Jr.         Executive Officer)
 
                                Senior Vice President and
     /s/ KEVIN W. MCALEER         Chief Financial Officer
- ------------------------------    (Principal Accounting       June 22nd, 1998
       Kevin W. McAleer           Officer)
 
   /s/ IGNATIUS W. LEONARDS     President, Vice Chairman
- ------------------------------    of the Board, and           June 22nd, 1998
     Ignatius W. Leonards         Director
 
      /s/ BYRON M. ALLEN
- ------------------------------  Executive Vice President      June 22nd, 1998
        Byron M. Allen            and Director
 
      /s/ MARK LANGDALE
- ------------------------------  Director                      June 22nd, 1998
        Mark Langdale
 
    /s/ TIMOTHY W. ROGERS
- ------------------------------  Director                      June 22nd, 1998
      Timothy W. Rogers
 
  /s/ CHRISTOPHER J. AMENSON
- ------------------------------  Director                      June 22nd, 1998
    Christopher J. Amenson
 
                                      II-6

<PAGE>

                                 EMPLOYMENT AGREEMENT


     THIS AGREEMENT (this "Agreement") is made, entered into and executed as of
the 16th day of February, 1998, by and between Ignatius W. Leonards
(hereinafter referred to as "Executive"), and IWL Holdings Corp., a Texas
corporation (hereinafter referred to as "Employer").

                                 W I T N E S S E T H:

     WHEREAS, Employer has agreed, subject to certain conditions, to engage in a
business combination (the "Combination") pursuant to which Holdings will acquire
all of the issued and outstanding capital stock of IWL Communications,
Incorporated ("IWL") and CapRock Communications Corp. ("CapRock") and all of the
partnership interests in CapRock Fiber Network, Ltd., a Texas limited
partnership (the "Partnership");

     WHEREAS, one of the conditions to the consummation of the Combination is
the execution of this Agreement by Employer and Executive;

     WHEREAS, Employer desires to employ Executive as President;

     WHEREAS, Executive desires to accept such employment on the terms and
conditions herein set forth;

     NOW, THEREFORE, for and in consideration of the premises and the mutual
covenants herein contained and other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, Employer and Executive
hereby agree as follows.

                                      ARTICLE I
                                      AGREEMENT

                                      EMPLOYMENT

     1.01.     Subject to the terms and conditions of this Agreement, Employer
agrees to employ Executive as President and Executive hereby accepts such
employment with Employer.

                                         TERM

     1.02.     The term (the "Base Term") of this Agreement shall commence on
the date hereof (hereinafter referred as the "Effective Date") and shall
continue thereafter through April 30, 2001, unless earlier terminated as
provided herein or unless extended on such terms and conditions and for such
period of time as may be agreed upon in writing by Employer and Executive (the
Base Term, as so extended or earlier terminated, is referred to herein as the
"Term").  

<PAGE>

                                      ARTICLE II
                                 TITLE AND AUTHORITY

                                       GENERAL

     2.01.     Executive agrees to act as President of Employer and perform the
duties of such position or office.  Executive shall render such services as are
normally delegated to such position and such other additional services as may be
delegated to him from time to time by the Board of Directors of Employer
(hereinafter referred to as the "Board of Directors").  Executive further agrees
to hold such additional positions of the Employer as may be assigned to him from
time to time by the Board of Directors.  In performing such duties hereunder,
Executive shall give Employer the benefit of his special knowledge, skills,
contacts and business experience and shall devote all of his business time,
attention, ability and energy exclusively to the business of Employer. 
Executive shall office in Houston, Texas at the Employer's place of business
located in Houston, Texas.

                                      ARTICLE III
                                     COMPENSATION

                                     BASE SALARY

     3.01.     As compensation for services rendered under this Agreement, 
Executive shall be entitled to receive from the Employer an aggregate minimum 
base salary of One Hundred Sixty Eight Thousand Dollars ($168,000.00) per 
annum. The base salary to be paid to Executive hereunder shall be paid in 
equal installments in accordance with Employer's normal payroll practice and 
shall be less applicable withholding, FICA, medicare, FUTA, SUTA and other 
taxes, if any. Such installments shall be paid on such days of each week, as 
determined by Employer from time to time.

                               CHANGES IN COMPENSATION

     3.02.     Nothing in this Agreement shall either prevent or require the
Board of Directors from increasing, in its sole and absolute discretion,
prospectively or retroactively, any compensation or other benefits payable or
provided to Executive.

                                 DISCRETIONARY BONUS

     3.03.     A discretionary bonus in an amount determined by the Board of
Directors may be paid to Executive at the end of each calendar year during the
Term of this Agreement.  No obligation to pay any such bonus is hereby created.


                                       2

<PAGE>

                                      ARTICLE IV
                                       BENEFITS

                                  MEDICAL CARE PLAN

     4.01.     Employer shall provide Executive with coverage under a group
medical care plan and life and dental insurance benefits that are the same or
substantially similar to the coverage and benefits provided from time to time to
other executives of Employer.

                                       VACATION

     4.02.     Executive shall be entitled to paid vacation in accordance with
Employer's written vacation policy, as in effect from time to time during the
Term.

                               EMPLOYEE BENEFIT PLANS

     4.03.     Executive shall be entitled to participate in Employer's employee
benefit plans established from time to time for its employees, including without
limitation its management incentive bonus plan.

                                      ARTICLE V
                                     TERMINATION

                                       GENERAL

     5.01.     Employer and Executive shall have the right to terminate the
employment of Executive as set forth in this Article V.

                          INCAPACITY OF EXECUTIVE TO PERFORM

     5.02.     If Executive shall become ill or be injured or otherwise become
incapacitated such that, in the good faith opinion of the Board of Directors, he
cannot carry out and perform fully his duties hereunder, and such incapacity
shall continue for a period of ninety (90) consecutive days, the Board of
Directors may, at any time after the ninety (90)-day period has passed, by
giving Executive written notice of such termination, fully and finally terminate
his employment under this Agreement.  Termination under this Section 5.02 shall
be effective as of the date provided in such notice.  In connection with the
termination of Executive pursuant to this Section 5.02, Employer shall pay to
Executive, in equal installments as set forth in Section 3.01, severance pay for
twelve (12) months or, if less than twelve (12) months remain in the Base Term
of this Agreement, an amount equal to his base salary for that number of the
months immediately preceding the termination that is equal to the number of
months remaining in the Base Term but in any event for not less than six (6)
months; provided, however, that such payments shall be reduced by the aggregate
amount of any payments Executive will be entitled to receive over the period
from the date of the termination of his 


                                       3

<PAGE>

employment hereunder through the end of the Base Term of this Agreement under 
any long term disability insurance policy provided to Executive by Employer.  
Upon such termination, Executive shall receive only such amounts as are 
earned and due to him under this Agreement as the result of his activities 
prior to such termination, and thereafter no further consideration or 
compensation shall be owed by Employer to Executive. The rights of Executive 
described in this paragraph shall be in addition to and not to the exclusion 
of, the other remedies and termination rights set forth in this Agreement.

                                  DEATH OF EXECUTIVE

     5.03.     The employment of Executive shall automatically terminate upon
the death of Executive.  Upon such termination, Executive's estate or, if
applicable, his heirs shall receive only such amounts as are earned and due to
Executive under this Agreement as the result of his activities prior to his
death, and thereafter no further consideration or compensation shall be owed by
Employer to Executive or to his estate.

                                TERMINATION FOR CAUSE

     5.04.     In addition to any other remedies that Employer may have at law
or in equity, the Board of Directors may immediately terminate Executive's
employment under this Agreement by giving Executive written or oral notice of
such termination upon the occurrence of any of the following events:

               A.   Failure of Executive to be present for work and duties as 
     set forth herein for ten (10) or more consecutive business days (except 
     during vacation and periods of illness as set forth herein) without 
     giving prior written notice to the Board of Directors and receiving 
     approval of the Board of Directors of such absence, which approval shall 
     not be unreasonably withheld;

               B.   Executive's conviction for a felony offense or commission 
     by Executive of any act abhorrent to the community that the Board of 
     Directors considers materially damaging to or tending to discredit the 
     reputation of Employer or its respective successors and assigns;

               C.   Dishonesty, fraud, willful misconduct, unlawful 
     discrimination or theft on the part of Executive (whether within the 
     workplace or elsewhere);

               D.   Executive's using for his own benefit or the benefit of 
     any third party any material, non-public information, confidential 
     information or proprietary information of Employer or its respective 
     successors and assigns, or willfully or negligently divulging any such 
     information to third parties without the prior written consent of the 
     Board of Directors, or any violation by Executive of any of its 
     obligations under Article VII hereof;

                                       4

<PAGE>

               E.   Executive's public drunkenness, use of illegal substances 
     or drugs or the use, possession, distribution or being under the 
     influence of alcohol or illegal substances or drugs in the workplace.  
     The only exception is that Executive may consume alcohol reasonably and 
     responsibly, if he or she so chooses, at legitimate business events and 
     functions where alcohol is legally available; and 

               F.   The determination by the Board of Directors that, in the 
     good faith opinion of the Board of Directors, Executive has continually 
     failed or refused to comply, after notice of and a reasonable 
     opportunity to cure such failure or refusal, with the policies, 
     standards, regulations, instructions, or directions of Employer as they 
     currently exist or as they may be modified from time to time.

Upon termination for any of the reasons described above, Executive shall receive
only such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination, and thereafter no further consideration
shall be owed by Employer to Executive.  Employer may deduct from Executive's
paycheck any unauthorized expenses, charges or misappropriations for which
Employer may be responsible as the result of Executive's conduct.

                              TERMINATION WITHOUT CAUSE

     5.05.     The Board of Directors may terminate Executive's employment under
this Agreement without any cause whatsoever by giving Executive thirty (30)
days' written notice or, at the election of the Board of Directors, immediate
notice and the payment of an amount equal to his base salary for the previous
thirty (30) days, at the time set forth therein.  In addition to any amounts
owed to the Executive pursuant to the preceding sentence, if such termination is
made pursuant to this Section 5.05, Employer shall pay to Executive severance
pay in an amount equal to the base salary that would be payable to Executive
over the period commencing on the date of termination and ending at the end of
the Base Term of this Agreement, which period shall in no event be less than six
(6) months (the "Severance Period"), assuming the base salary is the amount of
Executive's base salary at the time of the termination, which severance pay
shall be paid to Executive during the Severance Period in equal installments as
set forth in Section 3.01.  In addition, upon such termination the vesting of
all options that are granted to Executive under any stock option plan of
Employer or any subsidiary thereof (provided such options are granted on or
after the date on which the Combination with IWL, CapRock and the Partnership is
consummated) will automatically accelerate, with the result that such options
will be fully vested upon the date of termination.  Upon such termination,
Executive shall receive only such amounts as are owed to him under this
Agreement as the result of his activities prior to such termination and as
expressly set forth in this Section 5.05 and thereafter no further consideration
shall be owed by the Employer to Executive.


                                       5

<PAGE>

                               TERMINATION BY EXECUTIVE

     5.06.     Executive may, with or without cause, terminate his employment
under this Agreement by giving Employer at least thirty (30) days' prior written
notice of such termination.  Upon such termination, Executive shall receive only
such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination and thereafter no further consideration
shall be owed by Employer to Executive.

                                      ARTICLE VI
                                EXPENSE REIMBURSEMENT

     Executive is authorized to incur reasonable business expenses in connection
with the business of Employer, including expenditures for entertainment and
travel.  Subject to the requirements of this Article VI, Employer will reimburse
Executive from time to time for all business expenses that are determined to be
reasonable by the Board of Directors or any officer of Employer designated by
the Board of Directors to review and approve those expenses.  All reimbursements
are contingent upon Executive providing to the Board of Directors a receipt for
each expenditure and an account book or expense record in which Executive
recorded at or near the time each expenditure was made: the amount of the
expenditure; the time, place and designation of the type of entertainment and
travel or other expense; the business or other reason for the expenditure; and
the names, occupations and addresses of each person who was entertained.

                                    ARTICLE VII
               COVENANT NOT TO COMPETE, TRADE SECRETS, AND ASSIGNMENTS

                               COVENANT NOT TO COMPETE

     7.01.     Executive understands that this Agreement is being entered into
in connection with the Combination and acknowledges that as a result of the
Combination Executive will receive a substantial number of shares of the common
stock of Employer.  Executive also acknowledges that IWL, CapRock and the
Partnership would not be prepared to engage in the Combination unless Executive
agreed to the covenants contained in this Article VII.  Executive is entering
into this Agreement and making the covenants contained in this Article VII,
among other things, to induce Employer, IWL, CapRock and the Partnership to
engage in the Combination.  Executive recognizes and acknowledges that Employer
is placing its confidence and trust in the Executive.  Executive will have
access to information which enables Employer to be successful in its business. 
Some of the information may be confidential and constitute trade secrets;
however, that information when combined with all other information regarding
Employer constitutes proprietary information and methods that could seriously
affect the ability of Employer to do business if Executive were allowed to use
it other than for Employer.  Executive, therefore, covenants and agrees that for
a period beginning on the Effective Date and ending two (2) years after the date
of termination (except as set forth in Section 7.06 below) of Executive's
employment with Employer, Executive shall not continue or commence to:


                                       6

<PAGE>

               A.   Either directly or indirectly engage in or carry on any 
     business or in any way become associated with any business that is in 
     direct or indirect competition with the Business of the Employer (as 
     such term is used and defined herein).  As used in this Article VII, the 
     term "Business of the Employer" shall include all business activities in 
     which the Employer is engaged on the Effective Date or in which the 
     Employer is engaged on the date of Executive's termination or at any 
     time between such dates, including, but not limited to, the provision of 
     local or long distance telecommunications services;

               B.   Attempt in any manner to solicit from any person or 
     entity that is or was a client of Employer at any time prior to the date 
     of termination of Executive's termination, business of the type 
     performed or formerly performed by Employer for such client or to 
     persuade any client or Employer to cease to do business or to reduce the 
     amount of business which any such client has customarily done with 
     Employer or contemplates doing with Employer; or provide to or for any 
     client any services or products of the type provided by Employer or 
     formerly provided by Employer (as used herein the noun "client" shall 
     mean anyone who is a client or customer, supplier, sales representative 
     or other person who does business with Employer: (i) as of the date 
     hereof or the date of Executive's termination or at the time of the 
     alleged conduct or at any time in between such times; (ii) at any time 
     during the twelve (12) month period immediately preceding the time of 
     alleged prohibited conduct; and (iii) any prospective persons to whom 
     Employer had made a formal presentation (or similar offering of 
     services) within a period of twelve (12) months immediately preceding 
     the alleged prohibited conduct);

               C.   Either directly or indirectly be or become an employee, 
     agent, consultant or representative of or become a director or officer 
     of or be otherwise in any manner associated with any person, firm, 
     corporation, association or other entity that is engaged in or currently 
     intends to become engaged in or is carrying on any business that is in 
     direct or indirect competition with the Business of Employer;

               D.   Either directly or indirectly solicit for employment or 
     employ any person employed by Employer at any time during the 
     twenty-four month (24-month) period immediately preceding such 
     solicitation or employment; and

               E.   Either directly or indirectly be or become a shareholder, 
     joint venturer in or owner (in whole or in part) of or be a partner of 
     or associated with or have any proprietary or financial interest in any 
     firm, corporation, joint venture, partnership or association or other 
     entity that is engaged in or is carrying on any business that is in 
     direct or indirect competition with the Business of Employer.

     Executive hereby recognizes and acknowledges that the existing business
area of Employer extends throughout the United States and therefore agrees that
the covenants not to compete contained in this Section 7.01 shall be applicable
in and throughout such area.  Executive further warrants and represents that,
because of his varied skill and abilities, he does not need to compete with the
Business 

                                       7

<PAGE>

of Employer in the area described above, in order to make a living. 
Nothing in this Section will prevent Executive from owning less than five
percent (5%) of the stock of any publicly traded corporation after the
termination of his employment as long as Executive is not a participant in the
management or affairs of the corporation in a manner that would otherwise
violate any prohibition contained in this Section.  Executive further
acknowledges that all references in this Section 7.1 and in Sections 7.02, 7.03
and 7.04 to "Employer" shall include all existing and future subsidiaries of
Employer and any successor thereof, including without limitation IWL, CapRock
and the Partnership upon consummation of the Combination, and the covenant not
to compete granted in this Section 7.1 shall extend to all such entities.

                                    TRADE SECRETS

     7.02.     Executive recognizes and acknowledges that information in 
whatever form it may exist pertaining to the financial condition of Employer, 
its products, processes, properties, assets, inventions, proprietary rights, 
customers, specifically targeted potential customers, markets, technology, 
know-how, trade secrets, prospects, proposals, concepts and all other aspects 
of the Business of Employer (collectively "Confidential Information") is 
valuable, special and unique.  Accordingly, Executive agrees that he will not 
during the Term of his employment with Employer or for five (5) years 
thereafter, disclose any such Confidential Information to any person, firm, 
corporation, association, or other entity for any reason or purpose 
whatsoever or make use in any other way to his personal advantage or to the 
advantage of any third parties, of any Confidential Information available to 
him.

                                       RECORDS

     7.03.     All files of customers and of Employer and all records of the
accounts of customers, and any other records, memoranda, etc., relating in any
manner whatsoever to the customers, Employer's product, the Business of
Employer, the Confidential Information, suppliers or prospective customers or
prospective suppliers of Employer, whether prepared by Executive or otherwise
coming into his possession, shall be the exclusive property of Employer.  All
such files and records shall be immediately placed in the physical possession of
Employer on the termination of Executive's employment with Employer or at any
other time specified by the Board of Directors.  Executive agrees not to retain
or use duplicates in any form of such files and records by Executive is
prohibited after the termination of Executive's employment with Employer and
acknowledges that such use is prohibited.

     7.04.     DISCLOSURE AND ASSIGNMENT OF RIGHTS.

     A.   Executive shall disclose in writing to Employer full and complete
details respecting any Confidential Information, inventions, enhancements,
technology or other proprietary assets whether tangible or intangible
(collectively "Confidential Information and Proprietary Assets") that Executive
may devise, develop, invent, compile, enhance, design, write or discover
(whether alone or with others or whether during or after business hours, or
whether at the premises of Employer, the 

                                       8

<PAGE>

home of Executive or elsewhere) while he is employed by the Employer.  Such 
disclosure shall be made promptly upon such development, enhancement, 
invention, compilation, design, writing or discovery having been made or 
created, and shall be disclosed in writing pursuant to such form as Employer 
may from time to time provide.

     B.   Executive agrees to assign and does hereby irrevocably assign to
Employer all of his right, title and interest in and to any Confidential
Information and Proprietary Assets including, but not limited to, that which
relates to the Business of the Employer that he has devised, developed,
invented, compiled, enhanced, designed, written or discovered (whether alone or
with others or whether during or after business hours, or whether at the
premises of Employer, the home of Executive or elsewhere), or in which he may
otherwise obtain any rights, while he is or was employed by Employer or which he
owned at the time of becoming an employee of the Employer.  Executive agrees to
take any actions, including the execution of documents or instruments, that the
Employer may reasonably require to effect the Executive's assignment of rights
pursuant to this Section 7.04, and Executive  hereby constitutes and appoints,
with full power of substitution and resubstitution, the President and any Vice
President, acting alone, of Employer as his attorney-in-fact to execute and
deliver on behalf and in the stead of Executive any documents or instruments
that Executive is obligated to execute and deliver pursuant to this Section
7.04.

     C.   Executive shall promptly notify Employer of any patent relating to any
portion of the Confidential Information and Proprietary Assets that is applied
for by any person or entity or issued to any person or entity (including
Executive) ("Patent").  Such notice shall be in writing in such form as Employer
may from time to time require.  On the written request of Employer, Executive
shall sell to Employer, and Employer shall purchase from Executive, all right,
title and interest of Executive in and to any Patent, whether or not Executive
is employed by Employer at the time the Patent issues.  The purchase price for
any Patent or Copyright shall be one dollar ($1) and shall be paid by Employer
at the time it makes the written request to purchase the Patent or Copyright. 
Executive agrees to execute any and all documents and instruments necessary to
evidence and effect the transfer to Employer of all right, title and interest of
Executive in and to the Patent or Copyright.

     D.   At the request of Employer, Executive shall assist Employer in
applying for and obtaining both domestic and foreign patents or copyrights, as
the case may be, on all Confidential Information and Proprietary Assets that
Employer deems to be patentable or copyrightable that he has previously devised,
developed, invented, compiled, written, designed or discovered or that he may
devise, develop, invent, compile, design, write or discover, (whether alone or
with others or whether during or after business hours, or whether at the
premises of Employer, the home of Executive or elsewhere), while he is or was
employed by Employer, and Executive shall execute at any time or times any and
all documents and perform all acts reasonably requested by Employer and that
Employer deems to be necessary or desirable in order to obtain such patents or
copyrights or otherwise to vest in Employer full and exclusive title and
interest in and to all such Confidential Information and Proprietary Assets, to
protect the same against infringement by others and otherwise to aid Employer in
connection with any continuations, renewals or reissues of any patents or

                                       9

<PAGE>

copyrights, or in the conduct of any proceedings or litigation in regard 
thereto.  All expenses of procuring any patent or copyrights shall be borne 
by Employer.

     E.   Executive has no inventions and/or other rights or items made or
conceived by Executive prior to the date hereof that are not in the public
domain or the property of Employer that in any manner could be deemed to be
Confidential Information and Proprietary Assets.

                                        BREACH

     7.05.     Executive hereby recognizes and acknowledges that irreparable
injury or damage shall result to the Business of Employer in the event of a
breach or threatened breach by Executive of any of the terms or provisions of
this Article VII, and Executive therefore agrees that Employer shall be entitled
to an injunction restraining Executive from engaging in any activity
constituting such breach or threatened breach.  Nothing contained herein shall
be construed as prohibiting Employer from pursuing any other remedies available
to Employer at law or in equity for such breach or threatened breach, including,
but not limited to, the recovery of damages from Executive and, if Executive is
an employee of the Employer, terminating the employment of Executive in
accordance with the terms and provisions of this Agreement.

                                       SURVIVAL

     7.06.     Except as set forth below in this Section 7.06, notwithstanding
the termination of the employment of Executive or the termination of this
Agreement, the provisions of this Article VII shall survive and be binding upon
Executive unless a written agreement that specifically refers to the termination
of the obligations and covenants of this Article VII is executed by Employer.
The provisions of Section 7.01 shall terminate two (2) years after the date of
termination unless the termination is made pursuant to Section 5.05.  If the
termination is made pursuant to Section 5.05 the provisions of Section 7.01
shall terminate upon expiration of the Severance Period.  The provisions of
Section 7.02 shall terminate five (5) years after the date of termination (no
matter how such termination occurs).

                                    ARTICLE VIII
                                    MISCELLANEOUS

                                       NOTICES

     8.01.     Any notices to be given hereunder by either party to the other
may be effected either by personal delivery in writing or by mail, registered or
certified, postage prepaid with return receipt requested.  Mailed notices shall
be addressed to the parties at the following addresses:

                                      10

<PAGE>

     If to  Employer:    IWL Holdings Corp.
                         Two Galleria Tower, Suite 1925
                         13455 Noel Road
                         Dallas, Texas  75240-6638
                         Attn:  Jere W. Thompson, Jr.
                         Facsimile No.: (972) 788-4243

     If to Executive:    Ignatius Leonards
                         1103 Cowards Creek
                         Friendswood, TX 77546
                         Phone No.:  281-482-8296
                         Fax No.:

     Any party may change his or its address by written notice in accordance
with this Section.  Notices delivered personally shall be deemed communicated as
of actual receipt, mailed notices shall be deemed communicated as of three (3)
days after proper mailing.

                         INCLUSION OF ENTIRE AGREEMENT HEREIN

     8.02.     This Agreement supersedes any and all other agreements, either
oral or in writing, between the parties hereto with respect to the employment of
Executive by Employer and contains all of the covenants and agreements between
the parties with respect to such employment in any manner whatsoever.  Any
existing employment agreement between Executive and Employer is hereby
terminated effective as of the Effective Date and shall be of no further force
or effect from and after the Effective Date.  

                               LAW GOVERNING AGREEMENT

     8.03.     This Agreement shall be governed by and construed in accordance
with the laws of the State of Texas, and all obligations shall be performable in
the State of Texas.

                              ATTORNEY'S FEES AND COSTS

     8.04.     If any action at law or in equity is necessary to enforce or
interpret the terms of this Agreement, the prevailing party shall be entitled to
reasonable attorney's fees, costs and necessary disbursements in addition to any
other relief to which such party may be entitled.

                                      11

<PAGE>

                                        WAIVER

     8.05.     No term or condition of this Agreement shall be deemed to have
been waived nor shall there be any estoppel to enforce any of the terms or
provisions of this Agreement except by written instrument of the party charged
with such waiver or estoppel.  Further, it is agreed that no waiver at any time
of any of the terms or provisions of this Agreement shall be construed as a
waiver of any of the other terms or provisions of this Agreement and that a
waiver at any time of any of the terms or provisions of this Agreement shall not
be construed as a waiver at any subsequent time of the same terms or provisions.

                                      AMENDMENTS

     8.06.     Except as otherwise provided in Section 8.07, no amendment or
modification of this Agreement shall be deemed effective unless and until
executed in writing by all of the parties hereto.

                             SEVERABILITY AND LIMITATION

     8.07.     All agreements and covenants contained herein are severable and,
in the event any of them shall be held to be invalid by any competent court,
this Agreement shall be interpreted as if such invalid agreements or covenants
were not contained herein.  Should any court or other legally constituted
authority determine that for any such agreement or covenant to be effective that
it must be modified to limit its duration or scope, the parties hereto shall
consider such agreement or covenant to be amended or modified with respect to
duration and scope so as to comply with the orders of any such court or other
legally constituted authority or to be enforceable under the laws of the State
of Texas, and as to all other portions of such agreement or covenants they shall
remain in full force and effect as originally written.

                                       HEADINGS

     8.08.     All headings set forth in this Agreement are intended for
convenience only and shall not control or affect the meaning, construction or
effect of this Agreement or of any of the provisions thereof.

                                      ASSIGNMENT

     8.09.     Executive agrees that his representations, warranties, covenants,
promises and obligations contained herein may be assigned by Employer to any
person, partnership, firm, association, corporation or other business entity to
which Employer may transfer its business and assets or any portion thereof. 

                                      12

<PAGE>

     EXECUTED as of the day and year first above written.


                              EMPLOYER:

                              IWL HOLDINGS CORP.


                              By:  /s/ Jere W. Thompson, Jr.
                                   --------------------------
                              Its: Chief Executive Officer


                              EXECUTIVE:

                              /s/ Ignatius W. Leonards
                              -------------------------------
                              Ignatius W. Leonards





                                     13

<PAGE>
                                 EMPLOYMENT AGREEMENT


   THIS AGREEMENT (this "Agreement") is made, entered into and executed as of 
the 16th day of February, 1998, by and between Byron M. Allen (hereinafter 
referred to as "Executive"), and IWL Holdings Corp., a Texas corporation 
(hereinafter referred to as "Employer").

                                 W I T N E S S E T H:

   WHEREAS, Employer has agreed, subject to certain conditions, to engage in 
a business combination (the "Combination") pursuant to which Holdings will 
acquire all of the issued and outstanding capital stock of IWL 
Communications, Incorporated ("IWL") and CapRock Communications Corp. 
("CapRock") and all of the partnership interests in CapRock Fiber Network, 
Ltd., a Texas limited partnership (the "Partnership");

   WHEREAS, one of the conditions to the consummation of the Combination is 
the execution of this Agreement by Employer and Executive;

   WHEREAS, Employer desires to employ Executive as Executive Vice President;

   WHEREAS, Executive desires to accept such employment on the terms and 
conditions herein set forth;

   NOW, THEREFORE, for and in consideration of the premises and the mutual 
covenants herein contained and other good and valuable consideration, the 
receipt and sufficiency of which is hereby acknowledged, Employer and 
Executive hereby agree as follows.

                                      ARTICLE I
                                      AGREEMENT

                                      EMPLOYMENT

     1.01.     Subject to the terms and conditions of this Agreement, 
Employer agrees to employ Executive as Executive Vice President and Executive 
hereby accepts such employment with Employer.

                                         TERM

     1.02.     The term (the "Base Term") of this Agreement shall commence on 
the date hereof (hereinafter referred as the "Effective Date") and shall 
continue thereafter through April 30, 2001, unless earlier terminated as 
provided herein or unless extended on such terms and conditions and for such 
period of time as may be agreed upon in writing by Employer and Executive 
(the Base Term, as so extended or earlier terminated, is referred to herein 
as the "Term").  

<PAGE>

                                      ARTICLE II
                                 TITLE AND AUTHORITY

                                       GENERAL

     2.01.     Executive agrees to act as Executive Vice President of 
Employer and perform the duties of such position or office.  Executive shall 
render such services as are normally delegated to such position and such 
other additional services as may be delegated to him from time to time by the 
Board of Directors of Employer (hereinafter referred to as the "Board of 
Directors").  Executive further agrees to hold such additional positions of 
the Employer as may be assigned to him from time to time by the Board of 
Directors.  In performing such duties hereunder, Executive shall give 
Employer the benefit of his special knowledge, skills, contacts and business 
experience and shall devote all of his business time, attention, ability and 
energy exclusively to the business of Employer, except for any military 
service performed by Executive.  Executive shall office in Houston, Texas at 
the Employer's place of business located in Houston, Texas.

                                     ARTICLE III
                                    COMPENSATION

                                     BASE SALARY

     3.01.     As compensation for services rendered under this Agreement, 
Executive shall be entitled to receive from the Employer an aggregate minimum 
base salary of One Hundred Twenty Five Thousand Dollars ($125,000.00) per 
annum. The base salary to be paid to Executive hereunder shall be paid in 
equal installments in accordance with Employer's normal payroll practice and 
shall be less applicable withholding, FICA, medicare, FUTA, SUTA and other 
taxes, if any. Such installments shall be paid on such days of each week, as 
determined by Employer from time to time.

                               CHANGES IN COMPENSATION

     3.02.     Nothing in this Agreement shall either prevent or require the 
Board of Directors from increasing, in its sole and absolute discretion, 
prospectively or retroactively, any compensation or other benefits payable or 
provided to Executive.

                                 DISCRETIONARY BONUS

     3.03.     A discretionary bonus in an amount determined by the Board of 
Directors may be paid to Executive at the end of each calendar year during 
the Term of this Agreement.  No obligation to pay any such bonus is hereby 
created.

                                       2

<PAGE>

                                     ARTICLE IV
                                      BENEFITS
                                          
                                 MEDICAL CARE PLAN

     4.01.     Employer shall provide Executive with coverage under a group 
medical care plan and life and dental insurance benefits that are the same or 
substantially similar to the coverage and benefits provided from time to time 
to other executives of Employer.

                                      VACATION

     4.02.     Executive shall be entitled to paid vacation in accordance 
with Employer's written vacation policy, as in effect from time to time 
during the Term.

                               EMPLOYEE BENEFIT PLANS

     4.03      Executive shall be entitled to participate in Employer's 
employee benefit plans established from time to time for its employees, 
including without limitation its management incentive bonus plan.

                                     ARTICLE V
                                    TERMINATION
                                          
                                      GENERAL

     5.01.     Employer and Executive shall have the right to terminate the 
employment of Executive as set forth in this Article V.

                          INCAPACITY OF EXECUTIVE TO PERFORM

     5.02.     If Executive shall become ill or be injured or otherwise become
incapacitated such that, in the good faith opinion of the Board of Directors, he
cannot carry out and perform fully his duties hereunder, and such incapacity
shall continue for a period of ninety (90) consecutive days, the Board of
Directors may, at any time after the ninety (90)-day period has passed, by
giving Executive written notice of such termination, fully and finally terminate
his employment under this Agreement.  Termination under this Section 5.02 shall
be effective as of the date provided in such notice.  In connection with the
termination of Executive pursuant to this Section 5.02, Employer shall pay to
Executive, in equal installments as set forth in Section 3.01, severance pay for
twelve (12) months or, if less than twelve (12) months remain in the Base Term
of this Agreement, an amount equal to his base salary for that number of the
months immediately preceding the termination that is equal to the number of
months remaining in the Base Term but in any event for not less than six (6)
months; provided, however, that such payments shall be reduced by the aggregate
amount of any payments Executive will be entitled to receive over the period
from the date of the termination of his

                                       3

<PAGE>

employment hereunder through the end of the Base Term of this Agreement under 
any long term disability insurance policy provided to Executive by Employer.  
Upon such termination, Executive shall receive only such amounts as are 
earned and due to him under this Agreement as the result of his activities 
prior to such termination, and thereafter no further consideration or 
compensation shall be owed by Employer to Executive. The rights of Executive 
described in this paragraph shall be in addition to and not to the exclusion 
of, the other remedies and termination rights set forth in this Agreement.

                                  DEATH OF EXECUTIVE

     5.03.     The employment of Executive shall automatically terminate upon 
the death of Executive.  Upon such termination, Executive's estate or, if 
applicable, his heirs shall receive only such amounts as are earned and due 
to Executive under this Agreement as the result of his activities prior to 
his death, and thereafter no further consideration or compensation shall be 
owed by Employer to Executive or to his estate.

                                TERMINATION FOR CAUSE

     5.04.     In addition to any other remedies that Employer may have at 
law or in equity, the Board of Directors may immediately terminate 
Executive's employment under this Agreement by giving Executive written or 
oral notice of such termination upon the occurrence of any of the following 
events:

               A.   Failure of Executive to be present for work and duties as 
     set forth herein for ten (10) or more consecutive business days (except 
     during vacation and periods of illness as set forth herein) without 
     giving prior written notice to the Board of Directors and receiving 
     approval of the Board of Directors of such absence, which approval shall 
     not be unreasonably withheld;

               B.   Executive's conviction for a felony offense or commission 
     by Executive of any act abhorrent to the community that the Board of 
     Directors considers materially damaging to or tending to discredit the 
     reputation of Employer or its respective successors and assigns;

               C.   Dishonesty, fraud, willful misconduct, unlawful 
     discrimination or theft on the part of Executive (whether within the 
     workplace or elsewhere);

               D.   Executive's using for his own benefit or the benefit of 
     any third party any material, non-public information, confidential 
     information or proprietary information of Employer or its respective 
     successors and assigns, or willfully or negligently divulging any such 
     information to third parties without the prior written consent of the 
     Board of Directors, or any violation by Executive of any of its 
     obligations under Article VII hereof;


                                       4

<PAGE>

               E.   Executive's public drunkenness, use of illegal substances 
     or drugs or the use, possession, distribution or being under the 
     influence of alcohol or illegal substances or drugs in the workplace.  
     The only exception is that Executive may consume alcohol reasonably and 
     responsibly, if he or she so chooses, at legitimate business events and 
     functions where alcohol is legally available; and 

               F.   The determination by the Board of Directors that, in the 
     good faith opinion of the Board of Directors, Executive has continually 
     failed or refused to comply, after notice of and a reasonable opportunity 
     to cure such failure or refusal, with the policies, standards, regulations,
     instructions, or directions of Employer as they currently exist or as they 
     may be modified from time to time.

Upon termination for any of the reasons described above, Executive shall receive
only such amounts as are owed to him under this Agreement as the result of his 
activities prior to such termination, and thereafter no further consideration 
shall be owed by Employer to Executive.  Employer may deduct from Executive's 
paycheck any unauthorized expenses, charges or misappropriations for which 
Employer may be responsible as the result of Executive's conduct.

                              TERMINATION WITHOUT CAUSE

     5.05.     The Board of Directors may terminate Executive's employment 
under this Agreement without any cause whatsoever by giving Executive thirty 
(30) days' written notice or, at the election of the Board of Directors, 
immediate notice and the payment of an amount equal to his base salary for 
the previous thirty (30) days, at the time set forth therein.  In addition to 
any amounts owed to the Executive pursuant to the preceding sentence, if such 
termination is made pursuant to this Section 5.05, Employer shall pay to 
Executive severance pay in an amount equal to the base salary that would be 
payable to Executive over the period commencing on the date of termination 
and ending at the end of the Base Term of this Agreement, which period shall 
in no event be less than six (6) months (the "Severance Period"), assuming 
the base salary is the amount of Executive's base salary at the time of the 
termination, which severance pay shall be paid to Executive during the 
Severance Period in equal installments as set forth in Section 3.01.  In 
addition, upon such termination the vesting of all options that are granted 
to Executive under any stock option plan of Employer or any subsidiary 
thereof (provided such options are granted on or after the date on which the 
Combination with IWL, CapRock and the Partnership is consummated) will 
automatically accelerate, with the result that such options will be fully 
vested upon the date of termination.  Upon such termination, Executive shall 
receive only such amounts as are owed to him under this Agreement as the 
result of his activities prior to such termination and as expressly set forth 
in this Section 5.05 and thereafter no further consideration shall be owed by 
the Employer to Executive.

                                       5

<PAGE>

                               TERMINATION BY EXECUTIVE

     5.06.     Executive may, with or without cause, terminate his employment 
under this Agreement by giving Employer at least thirty (30) days' prior 
written notice of such termination.  Upon such termination, Executive shall 
receive only such amounts as are owed to him under this Agreement as the 
result of his activities prior to such termination and thereafter no further 
consideration shall be owed by Employer to Executive.
                                          
                                     ARTICLE VI
                               EXPENSE REIMBURSEMENT

     Executive is authorized to incur reasonable business expenses in 
connection with the business of Employer, including expenditures for 
entertainment and travel.  Subject to the requirements of this Article VI, 
Employer will reimburse Executive from time to time for all business expenses 
that are determined to be reasonable by the Board of Directors or any officer 
of Employer designated by the Board of Directors to review and approve those 
expenses.  All reimbursements are contingent upon Executive providing to the 
Board of Directors a receipt for each expenditure and an account book or 
expense record in which Executive recorded at or near the time each 
expenditure was made: the amount of the expenditure; the time, place and 
designation of the type of entertainment and travel or other expense; the 
business or other reason for the expenditure; and the names, occupations and 
addresses of each person who was entertained.
                                          
                                    ARTICLE VII
              COVENANT NOT TO COMPETE, TRADE SECRETS, AND ASSIGNMENTS
                                          
                              COVENANT NOT TO COMPETE

     7.01.     Executive understands that this Agreement is being entered 
into in connection with the Combination and acknowledges that as a result of 
the Combination Executive will receive a substantial number of shares of the 
common stock of Employer.  Executive also acknowledges that IWL, CapRock and 
the Partnership would not be prepared to engage in the Combination unless 
Executive agreed to the covenants contained in this Article VII.  Executive 
is entering into this Agreement and making the covenants contained in this 
Article VII, among other things, to induce Employer, IWL, CapRock and the 
Partnership to engage in the Combination.  Executive recognizes and 
acknowledges that Employer is placing its confidence and trust in the 
Executive.  Executive will have access to information which enables Employer 
to be successful in its business. Some of the information may be confidential 
and constitute trade secrets; however, that information when combined with 
all other information regarding Employer constitutes proprietary information 
and methods that could seriously affect the ability of Employer to do 
business if Executive were allowed to use it other than for Employer.  
Executive, therefore, covenants and agrees that for a period beginning on the 
Effective Date and ending two (2) years after the date of termination (except 
as set forth in Section 7.06 below) of Executive's employment with Employer, 
Executive shall not continue or commence to:

                                       6

<PAGE>

               A.   Either directly or indirectly engage in or carry on any 
     business or in any way become associated with any business that is in 
     direct or indirect competition with the Business of the Employer (as 
     such term is used and defined herein).  As used in this Article VII, the 
     term "Business of the Employer" shall include all business activities in 
     which the Employer is engaged on the Effective Date or in which the 
     Employer is engaged on the date of Executive's termination or at any 
     time between such dates, including, but not limited to, the provision of 
     local or long distance telecommunications services;

               B.   Attempt in any manner to solicit from any person or 
     entity that is or was a client of Employer at any time prior to the date 
     of termination of Executive's termination, business of the type 
     performed or formerly performed by Employer for such client or to 
     persuade any client or Employer to cease to do business or to reduce the 
     amount of business which any such client has customarily done with 
     Employer or contemplates doing with Employer; or provide to or for any 
     client any services or products of the type provided by Employer or 
     formerly provided by Employer (as used herein the noun "client" shall 
     mean anyone who is a client or customer, supplier, sales representative 
     or other person who does business with Employer: (i) as of the date 
     hereof or the date of Executive's termination or at the time of the 
     alleged conduct or at any time in between such times; (ii) at any time 
     during the twelve (12) month period immediately preceding the time of 
     alleged prohibited conduct; and (iii) any prospective persons to whom 
     Employer had made a formal presentation (or similar offering of 
     services) within a period of twelve (12) months immediately preceding 
     the alleged prohibited conduct);

               C.   Either directly or indirectly be or become an employee, 
     agent, consultant or representative of or become a director or officer 
     of or be otherwise in any manner associated with any person, firm, 
     corporation, association or other entity that is engaged in or currently 
     intends to become engaged in or is carrying on any business that is in 
     direct or indirect competition with the Business of Employer;

               D.   Either directly or indirectly solicit for employment or 
     employ any person employed by Employer at any time during the 
     twenty-four month (24-month) period immediately preceding such 
     solicitation or employment; and

               E.   Either directly or indirectly be or become a shareholder, 
     joint venturer in or owner (in whole or in part) of or be a partner of 
     or associated with or have any proprietary or financial interest in any 
     firm, corporation, joint venture, partnership or association or other 
     entity that is engaged in or is carrying on any business that is in 
     direct or indirect competition with the Business of Employer.

     Executive hereby recognizes and acknowledges that the existing business
area of Employer extends throughout the United States and therefore agrees that
the covenants not to compete contained in this Section 7.01 shall be applicable
in and throughout such area.  Executive further warrants and represents that,
because of his varied skill and abilities, he does not need to compete with the
Business


                                       7

<PAGE>

of Employer in the area described above, in order to make a living. Nothing 
in this Section will prevent Executive from owning less than five percent 
(5%) of the stock of any publicly traded corporation after the termination of 
his employment as long as Executive is not a participant in the management or 
affairs of the corporation in a manner that would otherwise violate any 
prohibition contained in this Section.  Executive further acknowledges that 
all references in this Section 7.1 and in Sections 7.02, 7.03 and 7.04 to 
"Employer" shall include all existing and future subsidiaries of Employer and 
any successor thereof, including without limitation IWL, CapRock and the 
Partnership upon consummation of the Combination, and the covenant not to 
compete granted in this Section 7.1 shall extend to all such entities.

                                    TRADE SECRETS

     7.02.     Executive recognizes and acknowledges that information in 
whatever form it may exist pertaining to the financial condition of Employer, 
its products, processes, properties, assets, inventions, proprietary rights, 
customers, specifically targeted potential customers, markets, technology, 
know-how, trade secrets, prospects, proposals, concepts and all other aspects 
of the Business of Employer (collectively "Confidential Information") is 
valuable, special and unique.  Accordingly, Executive agrees that he will not 
during the Term of his employment with Employer or for five (5) years 
thereafter, disclose any such Confidential Information to any person, firm, 
corporation, association, or other entity for any reason or purpose 
whatsoever or make use in any other way to his personal advantage or to the 
advantage of any third parties, of any Confidential Information available to 
him.

                                       RECORDS

     7.03.     All files of customers and of Employer and all records of the 
accounts of customers, and any other records, memoranda, etc., relating in 
any manner whatsoever to the customers, Employer's product, the Business of 
Employer, the Confidential Information, suppliers or prospective customers or 
prospective suppliers of Employer, whether prepared by Executive or otherwise 
coming into his possession, shall be the exclusive property of Employer.  All 
such files and records shall be immediately placed in the physical possession 
of Employer on the termination of Executive's employment with Employer or at 
any other time specified by the Board of Directors.  Executive agrees not to 
retain or use duplicates in any form of such files and records by Executive 
is prohibited after the termination of Executive's employment with Employer 
and acknowledges that such use is prohibited.

     7.04.     DISCLOSURE AND ASSIGNMENT OF RIGHTS.

     A.   Executive shall disclose in writing to Employer full and complete
details respecting any Confidential Information, inventions, enhancements,
technology or other proprietary assets whether tangible or intangible
(collectively "Confidential Information and Proprietary Assets") that Executive
may devise, develop, invent, compile, enhance, design, write or discover
(whether alone or with others or whether during or after business hours, or
whether at the premises of Employer, the


                                       8

<PAGE>

home of Executive or elsewhere) while he is employed by the Employer.  Such 
disclosure shall be made promptly upon such development, enhancement, 
invention, compilation, design, writing or discovery having been made or 
created, and shall be disclosed in writing pursuant to such form as Employer 
may from time to time provide.

     B.   Executive agrees to assign and does hereby irrevocably assign to 
Employer all of his right, title and interest in and to any Confidential 
Information and Proprietary Assets including, but not limited to, that which 
relates to the Business of the Employer that he has devised, developed, 
invented, compiled, enhanced, designed, written or discovered (whether alone 
or with others or whether during or after business hours, or whether at the 
premises of Employer, the home of Executive or elsewhere), or in which he may 
otherwise obtain any rights, while he is or was employed by Employer or which 
he owned at the time of becoming an employee of the Employer.  Executive 
agrees to take any actions, including the execution of documents or 
instruments, that the Employer may reasonably require to effect the 
Executive's assignment of rights pursuant to this Section 7.04, and Executive 
hereby constitutes and appoints, with full power of substitution and 
resubstitution, the President and any Vice President, acting alone, of 
Employer as his attorney-in-fact to execute and deliver on behalf and in the 
stead of Executive any documents or instruments that Executive is obligated 
to execute and deliver pursuant to this Section 7.04.

     C.   Executive shall promptly notify Employer of any patent relating to 
any portion of the Confidential Information and Proprietary Assets that is 
applied for by any person or entity or issued to any person or entity 
(including Executive) ("Patent").  Such notice shall be in writing in such 
form as Employer may from time to time require.  On the written request of 
Employer, Executive shall sell to Employer, and Employer shall purchase from 
Executive, all right, title and interest of Executive in and to any Patent, 
whether or not Executive is employed by Employer at the time the Patent 
issues.  The purchase price for any Patent or Copyright shall be one dollar 
($1) and shall be paid by Employer at the time it makes the written request 
to purchase the Patent or Copyright. Executive agrees to execute any and all 
documents and instruments necessary to evidence and effect the transfer to 
Employer of all right, title and interest of Executive in and to the Patent 
or Copyright.

     D.   At the request of Employer, Executive shall assist Employer in
applying for and obtaining both domestic and foreign patents or copyrights, as
the case may be, on all Confidential Information and Proprietary Assets that
Employer deems to be patentable or copyrightable that he has previously devised,
developed, invented, compiled, written, designed or discovered or that he may
devise, develop, invent, compile, design, write or discover, (whether alone or
with others or whether during or after business hours, or whether at the
premises of Employer, the home of Executive or elsewhere), while he is or was
employed by Employer, and Executive shall execute at any time or times any and
all documents and perform all acts reasonably requested by Employer and that
Employer deems to be necessary or desirable in order to obtain such patents or
copyrights or otherwise to vest in Employer full and exclusive title and
interest in and to all such Confidential Information and Proprietary Assets, to
protect the same against infringement by others and otherwise to aid Employer in
connection with any continuations, renewals or reissues of any patents or


                                       9

<PAGE>

copyrights, or in the conduct of any proceedings or litigation in regard 
thereto.  All expenses of procuring any patent or copyrights shall be borne 
by Employer.

     E.   Executive has no inventions and/or other rights or items made or 
conceived by Executive prior to the date hereof that are not in the public 
domain or the property of Employer that in any manner could be deemed to be 
Confidential Information and Proprietary Assets.

                                        BREACH

     7.05.     Executive hereby recognizes and acknowledges that irreparable 
injury or damage shall result to the Business of Employer in the event of a 
breach or threatened breach by Executive of any of the terms or provisions of 
this Article VII, and Executive therefore agrees that Employer shall be 
entitled to an injunction restraining Executive from engaging in any activity 
constituting such breach or threatened breach.  Nothing contained herein 
shall be construed as prohibiting Employer from pursuing any other remedies 
available to Employer at law or in equity for such breach or threatened 
breach, including, but not limited to, the recovery of damages from Executive 
and, if Executive is an employee of the Employer, terminating the employment 
of Executive in accordance with the terms and provisions of this Agreement.

                                       SURVIVAL

     7.06.     Except as set forth below in this Section 7.06, 
notwithstanding the termination of the employment of Executive or the 
termination of this Agreement, the provisions of this Article VII shall 
survive and be binding upon Executive unless a written agreement that 
specifically refers to the termination of the obligations and covenants of 
this Article VII is executed by Employer. The provisions of Section 7.01 
shall terminate two (2) years after the date of termination unless the 
termination is made pursuant to Section 5.05.  If the termination is made 
pursuant to Section 5.05 the provisions of Section 7.01 shall terminate upon 
expiration of the Severance Period.  The provisions of Section 7.02 shall 
terminate five (5) years after the date of termination (no matter how such 
termination occurs).

                                    ARTICLE VIII
                                    MISCELLANEOUS

                                       NOTICES

     8.01.     Any notices to be given hereunder by either party to the other 
may be effected either by personal delivery in writing or by mail, registered 
or certified, postage prepaid with return receipt requested.  Mailed notices 
shall be addressed to the parties at the following addresses:


                                      10

<PAGE>
     If to  Employer:    IWL Holdings Corp.
                         Two Galleria Tower, Suite 1925
                         13455 Noel Road
                         Dallas, Texas  75240-6638
                         Attn:  Jere W. Thompson, Jr.
                         Facsimile No.: (972) 788-4243

     If to Executive:    505 Cedarwood
                         Friendswood, TX 77546
                         Phone No.: 281-992-3246
                         Fax No.:                      

          Any party may change his or its address by written notice in 
accordance with this Section.  Notices delivered personally shall be deemed 
communicated as of actual receipt, mailed notices shall be deemed 
communicated as of three (3) days after proper mailing.

                         INCLUSION OF ENTIRE AGREEMENT HEREIN

     8.02.     This Agreement supersedes any and all other agreements, either 
oral or in writing, between the parties hereto with respect to the employment 
of Executive by Employer and contains all of the covenants and agreements 
between the parties with respect to such employment in any manner whatsoever. 
Any existing employment agreement between Executive and Employer is hereby 
terminated effective as of the Effective Date and shall be of no further 
force or effect from and after the Effective Date.  

                               LAW GOVERNING AGREEMENT

     8.03.     This Agreement shall be governed by and construed in 
accordance with the laws of the State of Texas, and all obligations shall be 
performable in the State of Texas.

                              ATTORNEY'S FEES AND COSTS

     8.04.     If any action at law or in equity is necessary to enforce or 
interpret the terms of this Agreement, the prevailing party shall be entitled 
to reasonable attorney's fees, costs and necessary disbursements in addition 
to any other relief to which such party may be entitled.

                                      11

<PAGE>
                                        WAIVER

     8.05.     No term or condition of this Agreement shall be deemed to have 
been waived nor shall there be any estoppel to enforce any of the terms or 
provisions of this Agreement except by written instrument of the party 
charged with such waiver or estoppel.  Further, it is agreed that no waiver 
at any time of any of the terms or provisions of this Agreement shall be 
construed as a waiver of any of the other terms or provisions of this 
Agreement and that a waiver at any time of any of the terms or provisions of 
this Agreement shall not be construed as a waiver at any subsequent time of 
the same terms or provisions.

                                      AMENDMENTS

     8.06.     Except as otherwise provided in Section 8.07, no amendment or 
modification of this Agreement shall be deemed effective unless and until 
executed in writing by all of the parties hereto.

                             SEVERABILITY AND LIMITATION

     8.07.     All agreements and covenants contained herein are severable 
and, in the event any of them shall be held to be invalid by any competent 
court, this Agreement shall be interpreted as if such invalid agreements or 
covenants were not contained herein.  Should any court or other legally 
constituted authority determine that for any such agreement or covenant to be 
effective that it must be modified to limit its duration or scope, the 
parties hereto shall consider such agreement or covenant to be amended or 
modified with respect to duration and scope so as to comply with the orders 
of any such court or other legally constituted authority or to be enforceable 
under the laws of the State of Texas, and as to all other portions of such 
agreement or covenants they shall remain in full force and effect as 
originally written.

                                       HEADINGS

     8.08.     All headings set forth in this Agreement are intended for 
convenience only and shall not control or affect the meaning, construction or 
effect of this Agreement or of any of the provisions thereof.

                                      ASSIGNMENT

     8.09.     Executive agrees that his representations, warranties, 
covenants, promises and obligations contained herein may be assigned by 
Employer to any person, partnership, firm, association, corporation or other 
business entity to which Employer may transfer its business and assets or any 
portion thereof.

                                      12

<PAGE>


     EXECUTED as of the day and year first above written.

                              EMPLOYER:

                              IWL HOLDINGS CORP.


                              By:  /s/ Jere W. Thompson, Jr.
                                  ----------------------------
                              Its: Chief Executive Officer
                                  ----------------------------

                              EXECUTIVE:

                                /s/ Byron M. Allen
                              ---------------------------------
                                        Byron M. Allen


                                      13


<PAGE>

                                 EMPLOYMENT AGREEMENT


     THIS AGREEMENT (this "Agreement") is made, entered into and executed as of
the 16th day of February, 1998, by and between Errol Olivier (hereinafter 
referred to as "Executive"), and IWL Holdings Corp., a Texas corporation
(hereinafter referred to as "Employer").

                                 W I T N E S S E T H:

     WHEREAS, Employer has agreed, subject to certain conditions, to engage in a
business combination (the "Combination") pursuant to which Holdings will acquire
all of the issued and outstanding capital stock of IWL Communications,
Incorporated ("IWL") and CapRock Communications Corp. ("CapRock") and all of the
partnership interests in CapRock Fiber Network, Ltd., a Texas limited
partnership (the "Partnership");

     WHEREAS, one of the conditions to the consummation of the Combination is
the execution of this Agreement by Employer and Executive;

     WHEREAS, Employer desires to employ Executive as Vice President;

     WHEREAS, Executive desires to accept such employment on the terms and
conditions herein set forth;

     NOW, THEREFORE, for and in consideration of the premises and the mutual
covenants herein contained and other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, Employer and Executive
hereby agree as follows.

                                      ARTICLE I
                                      AGREEMENT

                                      EMPLOYMENT

     1.01.     Subject to the terms and conditions of this Agreement, Employer
agrees to employ Executive as Vice President and Executive hereby accepts such
employment with Employer.

                                         TERM

     1.02.     The term (the "Base Term") of this Agreement shall commence on
the date hereof (hereinafter referred as the "Effective Date") and shall
continue thereafter through April 30, 2001, unless earlier terminated as
provided herein or unless extended on such terms and conditions and for such
period of time as may be agreed upon in writing by Employer and Executive (the
Base Term, as so extended or earlier terminated, is referred to herein as the
"Term").  

                                        
<PAGE>

                                      ARTICLE II
                                 TITLE AND AUTHORITY

                                       GENERAL

     2.01.     Executive agrees to act as Vice President of Employer and perform
the duties of such position or office.  Executive shall render such services as
are normally delegated to such position and such other additional services as
may be delegated to him from time to time by the Board of Directors of Employer
(hereinafter referred to as the "Board of Directors").  Executive further agrees
to hold such additional positions of the Employer as may be assigned to him from
time to time by the Board of Directors.  In performing such duties hereunder,
Executive shall give Employer the benefit of his special knowledge, skills,
contacts and business experience and shall devote all of his business time,
attention, ability and energy exclusively to the business of Employer. 
Executive shall office in Houston, Texas at the Employer's place of business
located in Houston, Texas.

                                     ARTICLE III
                                     COMPENSATION

                                     BASE SALARY

     3.01.     As compensation for services rendered under this Agreement,
Executive shall be entitled to receive from the Employer an aggregate minimum
base salary of One Hundred Fifteen Thousand Dollars ($115,000.00) per annum. 
The base salary to be paid to Executive hereunder shall be paid in equal
installments in accordance with Employer's normal payroll practice and shall be
less applicable withholding, FICA, medicare, FUTA, SUTA and other taxes, if any.
Such installments shall be paid on such days of each week, as determined by
Employer from time to time.

                               CHANGES IN COMPENSATION

     3.02.     Nothing in this Agreement shall either prevent or require the
Board of Directors from increasing, in its sole and absolute discretion,
prospectively or retroactively, any compensation or other benefits payable or
provided to Executive.

                                 DISCRETIONARY BONUS

     3.03.     A discretionary bonus in an amount determined by the Board of
Directors may be paid to Executive at the end of each calendar year during the
Term of this Agreement.  No obligation to pay any such bonus is hereby created.

                                         2

<PAGE>

                                      ARTICLE IV
                                       BENEFITS

                                  MEDICAL CARE PLAN

     4.01.     Employer shall provide Executive with coverage under a group
medical care plan and life and dental insurance benefits that are the same or
substantially similar to the coverage and benefits provided from time to time to
other executives of Employer.

                                      VACATION

     4.02.     Executive shall be entitled to paid vacation in accordance with
Employer's written vacation policy, as in effect from time to time during the
Term.

                               EMPLOYEE BENEFIT PLANS

     4.03      Executive shall be entitled to participate in Employer's employee
benefit plans established from time to time for its employees, including without
limitation its management incentive bonus plan.

                                      ARTICLE V
                                     TERMINATION

                                       GENERAL

     5.01.     Employer and Executive shall have the right to terminate the
employment of Executive as set forth in this Article V.

                          INCAPACITY OF EXECUTIVE TO PERFORM

     5.02.     If Executive shall become ill or be injured or otherwise become
incapacitated such that, in the good faith opinion of the Board of Directors, he
cannot  carry out and perform fully his duties hereunder, and such incapacity
shall continue for a period of ninety (90) consecutive days, the Board of
Directors may, at any time after the ninety (90)-day period has passed, by
giving Executive written notice of such termination, fully and finally terminate
his employment under this Agreement.  Termination under this Section 5.02 shall
be effective as of the date provided in such notice.  In connection with the
termination of Executive pursuant to this Section 5.02, Employer shall pay to
Executive, in equal installments as set forth in Section 3.01, severance pay for
twelve (12) months or, if less than twelve (12) months remain in the Base Term
of this Agreement, an amount equal to his base salary for that number of the
months immediately preceding the termination that is equal to the number of
months remaining in the Base Term but in any event for not less than six (6)
months; provided, however, that such payments shall be reduced by the aggregate
amount of any payments Executive will be entitled to receive over the period
from the date of the termination of his employment hereunder through the end of
the Base Term of this Agreement under any long term disability insurance policy
provided to Executive by Employer.  Upon such termination, 

                                         3

<PAGE>

Executive shall receive only such amounts as are earned and due to him under 
this Agreement as the result of his activities prior to such termination, and 
thereafter no further consideration or compensation shall be owed by Employer 
to Executive. The rights of Executive described in this paragraph shall be in 
addition to and not to the exclusion of, the other remedies and termination 
rights set forth in this Agreement.

                                  DEATH OF EXECUTIVE

     5.03.     The employment of Executive shall automatically terminate upon
the death of Executive.  Upon such termination, Executive's estate or, if
applicable, his heirs shall receive only such amounts as are earned and due to
Executive under this Agreement as the result of his activities prior to his
death, and thereafter no further consideration or compensation shall be owed by
Employer to Executive or to his estate.

                                TERMINATION FOR CAUSE

     5.04.     In addition to any other remedies that Employer may have at law
or in equity, the Board of Directors may immediately terminate Executive's
employment under this Agreement by giving Executive written or oral notice of
such termination upon the occurrence of any of the following events:

               A.   Failure of Executive to be present for work and 
     duties as set forth herein for ten (10) or more consecutive business days 
     (except during vacation and periods of illness as set forth herein) 
     without giving prior written notice to the Board of Directors and 
     receiving approval of the Board of Directors of such absence, which 
     approval shall not be unreasonably withheld;

               B.   Executive's conviction for a felony offense or 
     commission by Executive of any act abhorrent to the community that the 
     Board of Directors considers materially damaging to or tending to 
     discredit the reputation of Employer or its respective successors and 
     assigns;

               C.   Dishonesty, fraud, willful misconduct, unlawful 
     discrimination or theft on the part of Executive (whether within the 
     workplace or elsewhere);

               D.   Executive's using for his own benefit or the benefit 
     of any third party any material, non-public information, confidential 
     information or proprietary information of Employer or its respective 
     successors and assigns, or willfully or negligently divulging any such 
     information to third parties without the prior written consent of the 
     Board of Directors, or any violation by Executive of any of its 
     obligations under Article VII hereof;

               E.   Executive's public drunkenness, use of illegal 
     substances or drugs or the use, possession, distribution or being under 
     the influence of alcohol or illegal substances or drugs in the workplace. 
     The only exception is that Executive may consume alcohol reasonably and 
     responsibly, if he or she so chooses, at legitimate business events and 
     functions where alcohol is legally available; and 

                                         4

<PAGE>

          F.   The determination by the Board of Directors that, in the 
     good faith opinion of the Board of Directors, Executive has continually 
     failed or refused to comply, after notice of and a reasonable opportunity 
     to cure such failure or refusal, with the policies, standards, 
     regulations, instructions, or directions of Employer as they currently 
     exist or as they may be modified from time to time.

Upon termination for any of the reasons described above, Executive shall receive
only such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination, and thereafter no further consideration
shall be owed by Employer to Executive.  Employer may deduct from Executive's
paycheck any unauthorized expenses, charges or misappropriations for which
Employer may be responsible as the result of Executive's conduct.

                              TERMINATION WITHOUT CAUSE

     5.05.     The Board of Directors may terminate Executive's employment under
this Agreement without any cause whatsoever by giving Executive thirty (30)
days' written notice or, at the election of the Board of Directors, immediate
notice and the payment of an amount equal to his base salary for the previous
thirty (30) days, at the time set forth therein.  In addition to any amounts
owed to the Executive pursuant to the preceding sentence, if such termination is
made pursuant to this Section 5.05, Employer shall pay to Executive severance
pay in an amount equal to the base salary that would be payable to Executive
over the period commencing on the date of termination and ending at the end of
the Base Term of this Agreement, which period shall in no event be less than six
(6) months (the "Severance Period"), assuming the base salary is the amount of
Executive's base salary at the time of the termination, which severance pay
shall be paid to Executive during the Severance Period in equal installments as
set forth in Section 3.01.  In addition, upon such termination the vesting of
all options that are granted to Executive under any stock option plan of
Employer or any subsidiary thereof (provided such options are granted on or
after the date on which the Combination with IWL, CapRock and the Partnership is
consummated) will automatically accelerate, with the result that such options
will be fully vested upon the date of termination.  Upon such termination,
Executive shall receive only such amounts as are owed to him under this
Agreement as the result of his activities prior to such termination and as
expressly set forth in this Section 5.05 and thereafter no further consideration
shall be owed by the Employer to Executive.

                               TERMINATION BY EXECUTIVE

     5.06.     Executive may, with or without cause, terminate his employment
under this Agreement by giving Employer at least thirty (30) days' prior written
notice of such termination.  Upon such termination, Executive shall receive only
such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination and thereafter no further consideration
shall be owed by Employer to Executive.

                                         5

<PAGE>

                                     ARTICLE VI
                                EXPENSE REIMBURSEMENT

     Executive is authorized to incur reasonable business expenses in connection
with the business of Employer, including expenditures for entertainment and
travel.  Subject to the requirements of this Article VI, Employer will reimburse
Executive from time to time for all business expenses that are determined to be
reasonable by the Board of Directors or any officer of Employer designated by
the Board of Directors to review and approve those expenses.  All reimbursements
are contingent upon Executive providing to the Board of Directors a receipt for
each expenditure and an account book or expense record in which Executive
recorded at or near the time each expenditure was made: the amount of the
expenditure; the time, place and designation of the type of entertainment and
travel or other expense; the business or other reason for the expenditure; and
the names, occupations and addresses of each person who was entertained.

                                     ARTICLE VII
               COVENANT NOT TO COMPETE, TRADE SECRETS, AND ASSIGNMENTS

                               COVENANT NOT TO COMPETE

     7.01.     Executive understands that this Agreement is being entered into
in connection with the Combination and acknowledges that as a result of the
Combination Executive will receive a substantial number of shares of the common
stock of Employer.  Executive also acknowledges that IWL, CapRock and the
Partnership would not be prepared to engage in the Combination unless Executive
agreed to the covenants contained in this Article VII.  Executive is entering
into this Agreement and making the covenants contained in this Article VII,
among other things, to induce Employer, IWL, CapRock and the Partnership to
engage in the Combination.  Executive recognizes and acknowledges that Employer
is placing its confidence and trust in the Executive.  Executive will have
access to information which enables Employer to be successful in its business. 
Some of the information may be confidential and constitute trade secrets;
however, that information when combined with all other information regarding
Employer constitutes proprietary information and methods that could seriously
affect the ability of Employer to do business if Executive were allowed to use
it other than for Employer.  Executive, therefore, covenants and agrees that for
a period beginning on the Effective Date and ending two (2) years after the date
of termination (except as set forth in Section 7.06 below) of Executive's
employment with Employer, Executive shall not continue or commence to:

               A.   Either directly or indirectly engage in or carry on 
     any business or in any way become associated with any business that is in 
     direct or indirect competition with the Business of the Employer (as such 
     term is used and defined herein).  As used in this Article VII, the term 
     "Business of the Employer" shall include all business activities in which 
     the Employer is engaged on the Effective Date or in which the Employer is 
     engaged on the date of Executive's termination or at any time between 
     such dates, including, but not limited to, the provision of local or long 
     distance telecommunications services;

                                         6

<PAGE>

               B.   Attempt in any manner to solicit from any person or 
     entity that is or was a client of Employer at any time prior to the date 
     of termination of Executive's termination, business of the type performed 
     or formerly performed by Employer for such client or to persuade any 
     client or Employer to cease to do business or to reduce the amount of 
     business which any such client has customarily done with Employer or 
     contemplates doing with Employer; or provide to or for any client any 
     services or products of the type provided by Employer or formerly 
     provided by Employer (as used herein the noun "client" shall mean anyone 
     who is a client or customer, supplier, sales representative or other 
     person who does business with Employer: (i) as of the date hereof or the 
     date of Executive's termination or at the time of the alleged conduct or 
     at any time in between such times; (ii) at any time during the twelve 
     (12) month period immediately preceding the time of alleged prohibited 
     conduct; and (iii) any prospective persons to whom Employer had made a 
     formal presentation (or similar offering of services) within a period of 
     twelve (12) months immediately preceding the alleged prohibited conduct);

               C.   Either directly or indirectly be or become an 
     employee, agent, consultant or representative of or become a director or 
     officer of or be otherwise in any manner associated with any person, 
     firm, corporation, association or other entity that is engaged in or 
     currently intends to become engaged in or is carrying on any business 
     that is in direct or indirect competition with the Business of Employer;

               D.   Either directly or indirectly solicit for employment 
     or employ any person employed by Employer at any time during the 
     twenty-four month (24-month) period immediately preceding such 
     solicitation or employment; and

               E.   Either directly or indirectly be or become a shareholder, 
     joint venturer in or owner (in whole or in part) of or be a partner of or 
     associated with or have any proprietary or financial interest in any 
     firm, corporation, joint venture, partnership or association or other 
     entity that is engaged in or is carrying on any business that is in 
     direct or indirect competition with the Business of Employer.

     Executive hereby recognizes and acknowledges that the existing business
area of Employer extends throughout Texas, Louisiana, Arkansas, Oklahoma, New
Mexico and the Gulf of Mexico and therefore agrees that the covenants not to
compete contained in this Section 7.01 shall be applicable in and throughout
such area.  Executive further warrants and represents that, because of his
varied skill and abilities, he does not need to compete with the Business of
Employer in the area described above, in order to make a living.  Nothing in
this Section will prevent Executive from owning less than five percent (5%) of
the stock of any publicly traded corporation after the termination of his
employment as long as Executive is not a participant in the management or
affairs of the corporation in a manner that would otherwise violate any
prohibition contained in this Section.  Executive further acknowledges that all
references in this Section 7.1 and in Sections 7.02, 7.03 and 7.04 to "Employer"
shall include all existing and future 

                                         7

<PAGE>

subsidiaries of Employer and any successor thereof, including without limitation
IWL, CapRock and the Partnership upon consummation of the Combination, and the 
covenant not to compete granted in this Section 7.1 shall extend to all such 
entities.

                                    TRADE SECRETS

     7.02.     Executive recognizes and acknowledges that information in
whatever form it may exist pertaining to the financial condition of Employer,
its products, processes, properties, assets, inventions, proprietary rights,
customers, specifically targeted potential customers, markets, technology, know-
how, trade secrets, prospects, proposals, concepts and all other aspects of the
Business of Employer (collectively "Confidential Information") is valuable,
special and unique.  Accordingly, Executive agrees that he will not during the
Term of his employment with Employer or for five (5) years thereafter, disclose
any such Confidential Information to any person, firm, corporation, association,
or other entity for any reason or purpose whatsoever or make use in any other
way to his personal advantage or to the advantage of any third parties, of any
Confidential Information available to him.

                                       RECORDS

     7.03.     All files of customers and of Employer and all records of the
accounts of customers, and any other records, memoranda, etc., relating in any
manner whatsoever to the customers, Employer's product, the Business of
Employer, the Confidential Information, suppliers or prospective customers or
prospective suppliers of Employer, whether prepared by Executive or otherwise
coming into his possession, shall be the exclusive property of Employer.  All
such files and records shall be immediately placed in the physical possession of
Employer on the termination of Executive's employment with Employer or at any
other time specified by the Board of Directors.  Executive agrees not to retain
or use duplicates in any form of such files and records by Executive is
prohibited after the termination of Executive's employment with Employer and
acknowledges that such use is prohibited.

     7.04.     DISCLOSURE AND ASSIGNMENT OF RIGHTS.

     A.   Executive shall disclose in writing to Employer full and complete
details respecting any Confidential Information, inventions, enhancements,
technology or other proprietary assets whether tangible or intangible
(collectively "Confidential Information and Proprietary Assets") that Executive
may devise, develop, invent, compile, enhance, design, write or discover
(whether alone or with others or whether during or after business hours, or
whether at the premises of Employer, the home of Executive or elsewhere) while
he is employed by the Employer.  Such disclosure shall be made promptly upon
such development, enhancement, invention, compilation, design, writing or
discovery having been made or created, and shall be disclosed in writing
pursuant to such form as Employer may from time to time provide.

     B.   Executive agrees to assign and does hereby irrevocably assign to
Employer all of his right, title and interest in and to any Confidential
Information and Proprietary 

                                         8

<PAGE>

Assets including, but not limited to, that which relates to the Business of 
the Employer that he has devised, developed, invented, compiled, enhanced, 
designed, written or discovered (whether alone or with others or whether 
during or after business hours, or whether at the premises of Employer, the 
home of Executive or elsewhere), or in which he may otherwise obtain any 
rights, while he is or was employed by Employer or which he owned at the time 
of becoming an employee of the Employer.  Executive agrees to take any 
actions, including the execution of documents or instruments, that the 
Employer may reasonably require to effect the Executive's assignment of 
rights pursuant to this Section 7.04, and Executive  hereby constitutes and 
appoints, with full power of substitution and resubstitution, the President 
and any Vice President, acting alone, of Employer as his attorney-in-fact to 
execute and deliver on behalf and in the stead of Executive any documents or 
instruments that Executive is obligated to execute and deliver pursuant to 
this Section 7.04.

     C.   Executive shall promptly notify Employer of any patent relating to any
portion of the Confidential Information and Proprietary Assets that is applied
for by any person or entity or issued to any person or entity (including
Executive) ("Patent").  Such notice shall be in writing in such form as Employer
may from time to time require.  On the written request of Employer, Executive
shall sell to Employer, and Employer shall purchase from Executive, all right,
title and interest of Executive in and to any Patent, whether or not Executive
is employed by Employer at the time the Patent issues.  The purchase price for
any Patent or Copyright shall be one dollar ($l) and shall be paid by Employer
at the time it makes the written request to purchase the Patent or Copyright. 
Executive agrees to execute any and all documents and instruments necessary to
evidence and effect the transfer to Employer of all right, title and interest of
Executive in and to the Patent or Copyright.

     D.   At the request of Employer, Executive shall assist Employer in
applying for and obtaining both domestic and foreign patents or copyrights, as
the case may be, on all Confidential Information and Proprietary Assets that
Employer deems to be patentable or copyrightable that he has previously devised,
developed, invented, compiled, written, designed or discovered or that he may
devise, develop, invent, compile, design, write or discover, (whether alone or
with others or whether during or after business hours, or whether at the
premises of Employer, the home of Executive or elsewhere), while he is or was
employed by Employer, and Executive shall execute at any time or times any and
all documents and perform all acts reasonably requested by Employer and that
Employer deems to be necessary or desirable in order to obtain such patents or
copyrights or otherwise to vest in Employer full and exclusive title and
interest in and to all such Confidential Information and Proprietary Assets, to
protect the same against infringement by others and otherwise to aid Employer in
connection with any continuations, renewals or reissues of any patents or
copyrights, or in the conduct of any proceedings or litigation in regard
thereto.  All expenses of procuring any patent or copyrights shall be borne by
Employer.

     E.   Executive has no inventions and/or other rights or items made or
conceived by Executive prior to the date hereof that are not in the public
domain or the 

                                         9

<PAGE>

property of Employer that in any manner could be deemed to be Confidential 
Information and Proprietary Assets.

                                        BREACH

     7.05.     Executive hereby recognizes and acknowledges that irreparable
injury or damage shall result to the Business of Employer in the event of a
breach or threatened breach by Executive of any of the terms or provisions of
this Article VII, and Executive therefore agrees that Employer shall be entitled
to an injunction restraining Executive from engaging in any activity
constituting such breach or threatened breach.  Nothing contained herein shall
be construed as prohibiting Employer from pursuing any other remedies available
to Employer at law or in equity for such breach or threatened breach, including,
but not limited to, the recovery of damages from Executive and, if Executive is
an employee of the Employer, terminating the employment of Executive in
accordance with the terms and provisions of this Agreement.

                                       SURVIVAL

     7.06.     Except as set forth below in this Section 7.06, notwithstanding
the termination of the employment of Executive or the termination of this
Agreement, the provisions of this Article VII shall survive and be binding upon
Executive unless a written agreement that specifically refers to the termination
of the obligations and covenants of this Article VII is executed by Employer.
The provisions of Section 7.01 shall terminate one (1) year after the date of
termination unless the termination is made pursuant to Section 5.05.  If the
termination is made pursuant to Section 5.05 the provisions of Section 7.01
shall terminate upon expiration of the Severance Period.  The provisions of
Section 7.02 shall terminate five (5) years after the date of termination (no
matter how such termination occurs).

                                    ARTICLE VIII
                                    MISCELLANEOUS

                                       NOTICES

     8.01.     Any notices to be given hereunder by either party to the other
may be effected either by personal delivery in writing or by mail, registered or
certified, postage prepaid with return receipt requested.  Mailed notices shall
be addressed to the parties at the following addresses:

     If to  Employer:    IWL Holdings Corp.
                         Two Galleria Tower, Suite 1925
                         13455 Noel Road
                         Dallas, Texas  75240-6638
                         Attn:  Jere W. Thompson, Jr.
                         Facsimile No.: (972) 788-4243

     If to Executive:    4006 Valley Green Court
                         Houston, TX 77059

                                        10

<PAGE>
                         Phone No.:  713-282-0816
                         Fax No.:  

     Any party may change his or its address by written notice in accordance
with this Section.  Notices delivered personally shall be deemed communicated as
of actual receipt, mailed notices shall be deemed communicated as of three (3)
days after proper mailing.

                         INCLUSION OF ENTIRE AGREEMENT HEREIN

     8.02.     This Agreement supersedes any and all other employment 
agreements, either oral or in writing, between the parties hereto with 
respect to the employment of Executive by Employer and contains all of the 
covenants and agreements between the parties with respect to such employment 
in any manner whatsoever.  Any existing employment agreement between 
Executive and Employer is hereby terminated effective as of the Effective 
Date and shall be of no further force or effect from and after the Effective 
Date.  

                               LAW GOVERNING AGREEMENT

     8.03.     This Agreement shall be governed by and construed in accordance
with the laws of the State of Texas, and all obligations shall be performable in
the State of Texas.

                              ATTORNEY'S FEES AND COSTS

     8.04.     If any action at law or in equity is necessary to enforce or
interpret the terms of this Agreement, the prevailing party shall be entitled to
reasonable attorney's fees, costs and necessary disbursements in addition to any
other relief to which such party may be entitled.

                                        WAIVER

     8.05.     No term or condition of this Agreement shall be deemed to have
been waived nor shall there be any estoppel to enforce any of the terms or
provisions of this Agreement except by written instrument of the party charged
with such waiver or estoppel.  Further, it is agreed that no waiver at any time
of any of the terms or provisions of this Agreement shall be construed as a
waiver of any of the other terms or provisions of this Agreement and that a
waiver at any time of any of the terms or provisions of this Agreement shall not
be construed as a waiver at any subsequent time of the same terms or provisions.

                                      AMENDMENTS

     8.06.     Except as otherwise provided in Section 8.07, no amendment or
modification of this Agreement shall be deemed effective unless and until
executed in writing by all of the parties hereto.

                                        11

<PAGE>

                             SEVERABILITY AND LIMITATION

     8.07.     All agreements and covenants contained herein are severable and,
in the event any of them shall be held to be invalid by any competent court,
this Agreement shall be interpreted as if such invalid agreements or covenants
were not contained herein.  Should any court or other legally constituted
authority determine that for any such agreement or covenant to be effective that
it must be modified to limit its duration or scope, the parties hereto shall
consider such agreement or covenant to be amended or modified with respect to
duration and scope so as to comply with the orders of any such court or other
legally constituted authority or to be enforceable under the laws of the State
of Texas, and as to all other portions of such agreement or covenants they shall
remain in full force and effect as originally written.

                                       HEADINGS

     8.08.     All headings set forth in this Agreement are intended for
convenience only and shall not control or affect the meaning, construction or
effect of this Agreement or of any of the provisions thereof.

                                      ASSIGNMENT

     8.09.     Executive agrees that his representations, warranties, covenants,
promises and obligations contained herein may be assigned by Employer to any
person, partnership, firm, association, corporation or other business entity to
which Employer may transfer its business and assets or any portion thereof. 

                                        12

<PAGE>

     EXECUTED as of the day and year first above written.



                                   EMPLOYER:

                                   IWL HOLDINGS CORP.


                                   By: /s/ Ignatius W. Leonards
                                       --------------------------------
                                   Its: President
                                       --------------------------------

                                   EXECUTIVE:


                                   /s/ Errol Olivier
                                   ------------------------------------
                                             Errol Olivier


     This agreement excludes the following trade marks 

     "CRAWDILLO"-trademark- registration # 051116

     "ARMAGATOR"-trademark- registration # 57375


                                        13


<PAGE>

                                 EMPLOYMENT AGREEMENT


     THIS AGREEMENT (this "Agreement") is made, entered into and executed as 
of the 16th day of February, 1998, by and between Richard H. Roberson 
(hereinafter referred to as "Executive"), and IWL Holdings Corp., a Texas 
corporation (hereinafter referred to as "Employer").

                                 W I T N E S S E T H:

     WHEREAS, Employer has agreed, subject to certain conditions, to engage 
in a business combination (the "Combination") pursuant to which Holdings will 
acquire all of the issued and outstanding capital stock of IWL 
Communications, Incorporated ("IWL") and CapRock Communications Corp. 
("CapRock") and all of the partnership interests in CapRock Fiber Network, 
Ltd., a Texas limited partnership (the "Partnership");

     WHEREAS, one of the conditions to the consummation of the Combination is 
the execution of this Agreement by Employer and Executive;

     WHEREAS, Employer desires to employ Executive as Controller, Treasurer 
and Secretary;

     WHEREAS, Executive desires to accept such employment on the terms and 
conditions herein set forth;

     NOW, THEREFORE, for and in consideration of the premises and the mutual 
covenants herein contained and other good and valuable consideration, the 
receipt and sufficiency of which is hereby acknowledged, Employer and 
Executive hereby agree as follows.

                                      ARTICLE I
                                      AGREEMENT

                                     EMPLOYMENT

     1.01.  Subject to the terms and conditions of this Agreement, Employer 
agrees to employ Executive as Controller, Treasurer and Secretary and 
Executive hereby accepts such employment with Employer.

                                        TERM

     1.02.  The term (the "Base Term") of this Agreement shall commence on 
the date hereof (hereinafter referred as the "Effective Date") and shall 
continue thereafter through April 30, 2001, unless earlier terminated as 
provided herein or unless extended on such terms and conditions and for such 
period of time as may be agreed upon in writing by Employer and Executive 
(the Base Term, as so extended or earlier terminated, is referred to herein 
as the "Term").  

<PAGE>

                                      ARTICLE II
                                 TITLE AND AUTHORITY

                                       GENERAL

     2.01.  Executive agrees to act as Controller, Treasurer and Secretary of 
Employer and perform the duties of such positions or offices.  Executive 
shall render such services as are normally delegated to such positions and 
such other additional services as may be delegated to him from time to time 
by the Board of Directors of Employer (hereinafter referred to as the "Board 
of Directors"). Executive further agrees to hold such additional positions of 
the Employer as may be assigned to him from time to time by the Board of 
Directors.  In performing such duties hereunder, Executive shall give 
Employer the benefit of his special knowledge, skills, contacts and business 
experience and shall devote all of his business time, attention, ability and 
energy exclusively to the business of Employer.  Executive shall office in 
Houston, Texas at the Employer's place of business located in Houston, Texas.

                                     ARTICLE III
                                     COMPENSATION

                                     BASE SALARY

     3.01.  As compensation for services rendered under this Agreement, 
Executive shall be entitled to receive from the Employer an aggregate minimum 
base salary of Ninety Two Thousand Dollars ($92,000.00) per annum.  The base 
salary to be paid to Executive hereunder shall be paid in equal installments 
in accordance with Employer's normal payroll practice and shall be less 
applicable withholding, FICA, medicare, FUTA, SUTA and other taxes, if any.  
Such installments shall be paid on such days of each week, as determined by 
Employer from time to time.

                               CHANGES IN COMPENSATION

     3.02.  Nothing in this Agreement shall either prevent or require the 
Board of Directors from increasing, in its sole and absolute discretion, 
prospectively or retroactively, any compensation or other benefits payable or 
provided to Executive.

                                 DISCRETIONARY BONUS

     3.03.  A discretionary bonus in an amount determined by the Board of 
Directors may be paid to Executive at the end of each calendar year during 
the Term of this Agreement.  No obligation to pay any such bonus is hereby 
created.

                                       2
<PAGE>

                                   ARTICLE IV
                                    BENEFITS

                                MEDICAL CARE PLAN

     4.01.  Employer shall provide Executive with coverage under a group 
medical care plan and life and dental insurance benefits that are the same or 
substantially similar to the coverage and benefits provided from time to time 
to other executives of Employer.

                                   VACATION

     4.02.  Executive shall be entitled to paid vacation in accordance with 
Employer's written vacation policy, as in effect from time to time during the 
Term.

                             EMPLOYEE BENEFIT PLANS

     4.03 Executive shall be entitled to participate in Employer's employee 
benefit plans established from time to time for its employees, including 
without limitation its management incentive bonus plan.

                                  ARTICLE V
                                 TERMINATION

                                   GENERAL

     5.01.  Employer and Executive shall have the right to terminate the 
employment of Executive as set forth in this Article V.

                          INCAPACITY OF EXECUTIVE TO PERFORM

     5.02.  If Executive shall become ill or be injured or otherwise become 
incapacitated such that, in the good faith opinion of the Board of Directors, 
he cannot carry out and perform fully his duties hereunder, and such 
incapacity shall continue for a period of ninety (90) consecutive days, the 
Board of Directors may, at any time after the ninety (90)-day period has 
passed, by giving Executive written notice of such termination, fully and 
finally terminate his employment under this Agreement.  Termination under 
this Section 5.02 shall be effective as of the date provided in such notice.  
In connection with the termination of Executive pursuant to this Section 
5.02, Employer shall pay to Executive, in equal installments as set forth in 
Section 3.01, severance pay for twelve (12) months or, if less than twelve 
(12) months remain in the Base Term of this Agreement, an amount equal to his 
base salary for that number of the months immediately preceding the 
termination that is equal to the number of months remaining in the Base Term 
but in any event for not less than six (6) months; provided, however, that 
such payments shall be reduced by the aggregate amount of any payments 
Executive will be entitled to receive over the period from the date of the 
termination of his 

                                       3
<PAGE>

employment hereunder through the end of the Base Term of this Agreement under 
any long term disability insurance policy provided to Executive by Employer.  
Upon such termination, Executive shall receive only such amounts as are 
earned and due to him under this Agreement as the result of his activities 
prior to such termination, and thereafter no further consideration or 
compensation shall be owed by Employer to Executive. The rights of Executive 
described in this paragraph shall be in addition to and not to the exclusion 
of, the other remedies and termination rights set forth in this Agreement.

                               DEATH OF EXECUTIVE

     5.03.  The employment of Executive shall automatically terminate upon 
the death of Executive.  Upon such termination, Executive's estate or, if 
applicable, his heirs shall receive only such amounts as are earned and due 
to Executive under this Agreement as the result of his activities prior to 
his death, and thereafter no further consideration or compensation shall be 
owed by Employer to Executive or to his estate.

                             TERMINATION FOR CAUSE

     5.04.  In addition to any other remedies that Employer may have at law 
or in equity, the Board of Directors may immediately terminate Executive's 
employment under this Agreement by giving Executive written or oral notice of 
such termination upon the occurrence of any of the following events:

            A.  Failure of Executive to be present for work and duties as set 
     forth herein for ten (10) or more consecutive business days (except 
     during vacation and periods of illness as set forth herein) without 
     giving prior written notice to the Board of Directors and receiving 
     approval of the Board of Directors of such absence, which approval shall 
     not be unreasonably withheld;

            B.  Executive's conviction for a felony offense or commission by 
     Executive of any act abhorrent to the community that the Board of 
     Directors considers materially damaging to or tending to discredit the 
     reputation of Employer or its respective successors and assigns;

            C.  Dishonesty, fraud, willful misconduct, unlawful 
     discrimination or theft on the part of Executive (whether within the 
     workplace or elsewhere);

            D.  Executive's using for his own benefit or the benefit of any 
     third party any material, non-public information, confidential 
     information or proprietary information of Employer or its respective 
     successors and assigns, or willfully or negligently divulging any such 
     information to third parties without the prior written consent of the 
     Board of Directors, or any violation by Executive of any of its 
     obligations under Article VII hereof;

                                       4
<PAGE>

            E.  Executive's public drunkenness, use of illegal substances or 
     drugs or the use, possession, distribution or being under the influence 
     of alcohol or illegal substances or drugs in the workplace.  The only 
     exception is that Executive may consume alcohol reasonably and 
     responsibly, if he or she so chooses, at legitimate business events and 
     functions where alcohol is legally available; and 

            F.  The determination by the Board of Directors that, in the good 
     faith opinion of the Board of Directors, Executive has continually 
     failed or refused to comply, after notice of and a reasonable 
     opportunity to cure such failure or refusal, with the policies, 
     standards, regulations, instructions, or directions of Employer as they 
     currently exist or as they may be modified from time to time.

Upon termination for any of the reasons described above, Executive shall 
receive only such amounts as are owed to him under this Agreement as the 
result of his activities prior to such termination, and thereafter no further 
consideration shall be owed by Employer to Executive.  Employer may deduct 
from Executive's paycheck any unauthorized expenses, charges or 
misappropriations for which Employer may be responsible as the result of 
Executive's conduct.

                           TERMINATION WITHOUT CAUSE

     5.05.  The Board of Directors may terminate Executive's employment under 
this Agreement without any cause whatsoever by giving Executive thirty (30) 
days' written notice or, at the election of the Board of Directors, immediate 
notice and the payment of an amount equal to his base salary for the previous 
thirty (30) days, at the time set forth therein.  In addition to any amounts 
owed to the Executive pursuant to the preceding sentence, if such termination 
is made pursuant to this Section 5.05, Employer shall pay to Executive 
severance pay in an amount equal to the base salary that would be payable to 
Executive over the period commencing on the date of termination and ending at 
the end of the Base Term of this Agreement, which period shall in no event be 
less than six (6) months (the "Severance Period"), assuming the base salary 
is the amount of Executive's base salary at the time of the termination, 
which severance pay shall be paid to Executive during the Severance Period in 
equal installments as set forth in Section 3.01.  In addition, upon such 
termination the vesting of all options that are granted to Executive under 
any stock option plan of Employer or any subsidiary thereof (provided such 
options are granted on or after the date on which the Combination with IWL, 
CapRock and the Partnership is consummated) will automatically accelerate, 
with the result that such options will be fully vested upon the date of 
termination.  Upon such termination, Executive shall receive only such 
amounts as are owed to him under this Agreement as the result of his 
activities prior to such termination and as expressly set forth in this 
Section 5.05 and thereafter no further consideration shall be owed by the 
Employer to Executive.

                                       5
<PAGE>

                            TERMINATION BY EXECUTIVE

     5.06.  Executive may, with or without cause, terminate his employment 
under this Agreement by giving Employer at least thirty (30) days' prior 
written notice of such termination.  Upon such termination, Executive shall 
receive only such amounts as are owed to him under this Agreement as the 
result of his activities prior to such termination and thereafter no further 
consideration shall be owed by Employer to Executive.

                                  ARTICLE VI
                             EXPENSE REIMBURSEMENT

     Executive is authorized to incur reasonable business expenses in 
connection with the business of Employer, including expenditures for 
entertainment and travel.  Subject to the requirements of this Article VI, 
Employer will reimburse Executive from time to time for all business expenses 
that are determined to be reasonable by the Board of Directors or any officer 
of Employer designated by the Board of Directors to review and approve those 
expenses.  All reimbursements are contingent upon Executive providing to the 
Board of Directors a receipt for each expenditure and an account book or 
expense record in which Executive recorded at or near the time each 
expenditure was made: the amount of the expenditure; the time, place and 
designation of the type of entertainment and travel or other expense; the 
business or other reason for the expenditure; and the names, occupations and 
addresses of each person who was entertained.

                                 ARTICLE VII
            COVENANT NOT TO COMPETE, TRADE SECRETS, AND ASSIGNMENTS

                            COVENANT NOT TO COMPETE

     7.01.  Executive understands that this Agreement is being entered into 
in connection with the Combination and acknowledges that as a result of the 
Combination Executive will receive a substantial number of shares of the 
common stock of Employer.  Executive also acknowledges that IWL, CapRock and 
the Partnership would not be prepared to engage in the Combination unless 
Executive agreed to the covenants contained in this Article VII.  Executive 
is entering into this Agreement and making the covenants contained in this 
Article VII, among other things, to induce Employer, IWL, CapRock and the 
Partnership to engage in the Combination.  Executive recognizes and 
acknowledges that Employer is placing its confidence and trust in the 
Executive.  Executive will have access to information which enables Employer 
to be successful in its business. Some of the information may be confidential 
and constitute trade secrets; however, that information when combined with 
all other information regarding Employer constitutes proprietary information 
and methods that could seriously affect the ability of Employer to do 
business if Executive were allowed to use it other than for Employer.  
Executive, therefore, covenants and agrees that for a period beginning on the 
Effective Date and ending two (2) years after the date of termination (except 
as set forth in Section 7.06 below) of Executive's employment with Employer, 
Executive shall not continue or commence to:

                                       6
<PAGE>

            A.  Either directly or indirectly engage in or carry on any 
     business or in any way become associated with any business that is in 
     direct or indirect competition with the Business of the Employer (as 
     such term is used and defined herein).  As used in this Article VII, the 
     term "Business of the Employer" shall include all business activities in 
     which the Employer is engaged on the Effective Date or in which the 
     Employer is engaged on the date of Executive's termination or at any 
     time between such dates, including, but not limited to, the provision of 
     local or long distance telecommunications services;

            B.  Attempt in any manner to solicit from any person or entity 
     that is or was a client of Employer at any time prior to the date of 
     termination of Executive's termination, business of the type performed 
     or formerly performed by Employer for such client or to persuade any 
     client or Employer to cease to do business or to reduce the amount of 
     business which any such client has customarily done with Employer or 
     contemplates doing with Employer; or provide to or for any client any 
     services or products of the type provided by Employer or formerly 
     provided by Employer (as used herein the noun "client" shall mean anyone 
     who is a client or customer, supplier, sales representative or other 
     person who does business with Employer: (i) as of the date hereof or the 
     date of Executive's termination or at the time of the alleged conduct or 
     at any time in between such times; (ii) at any time during the twelve 
     (12) month period immediately preceding the time of alleged prohibited 
     conduct; and (iii) any prospective persons to whom Employer had made a 
     formal presentation (or similar offering of services) within a period of 
     twelve (12) months immediately preceding the alleged prohibited conduct);

            C.  Either directly or indirectly be or become an employee, 
     agent, consultant or representative of or become a director or officer 
     of or be otherwise in any manner associated with any person, firm, 
     corporation, association or other entity that is engaged in or currently 
     intends to become engaged in or is carrying on any business that is in 
     direct or indirect competition with the Business of Employer;

            D.  Either directly or indirectly solicit for employment or 
     employ any person employed by Employer at any time during the 
     twenty-four month (24-month) period immediately preceding such 
     solicitation or employment; and

            E.  Either directly or indirectly be or become a shareholder, 
     joint venturer in or owner (in whole or in part) of or be a partner of 
     or associated with or have any proprietary or financial interest in any 
     firm, corporation, joint venture, partnership or association or other 
     entity that is engaged in or is carrying on any business that is in 
     direct or indirect competition with the Business of Employer.

     Executive hereby recognizes and acknowledges that the existing business 
area of Employer extends throughout the United States and therefore agrees 
that the covenants not to compete contained in this Section 7.01 shall be 
applicable in and throughout such area.  Executive further warrants and 
represents that, because of his varied skill and abilities, he does not need 
to compete with the Business 

                                       7
<PAGE>

of Employer in the area described above, in order to make a living. Nothing 
in this Section will prevent Executive from owning less than five percent 
(5%) of the stock of any publicly traded corporation after the termination of 
his employment as long as Executive is not a participant in the management or 
affairs of the corporation in a manner that would otherwise violate any 
prohibition contained in this Section.  Executive further acknowledges that 
all references in this Section 7.1 and in Sections 7.02, 7.03 and 7.04 to 
"Employer" shall include all existing and future subsidiaries of Employer and 
any successor thereof, including without limitation IWL, CapRock and the 
Partnership upon consummation of the Combination, and the covenant not to 
compete granted in this Section 7.1 shall extend to all such entities.

                                TRADE SECRETS

     7.02.  Executive recognizes and acknowledges that information in 
whatever form it may exist pertaining to the financial condition of Employer, 
its products, processes, properties, assets, inventions, proprietary rights, 
customers, specifically targeted potential customers, markets, technology, 
know-how, trade secrets, prospects, proposals, concepts and all other aspects 
of the Business of Employer (collectively "Confidential Information") is 
valuable, special and unique.  Accordingly, Executive agrees that he will not 
during the Term of his employment with Employer or for five (5) years 
thereafter, disclose any such Confidential Information to any person, firm, 
corporation, association, or other entity for any reason or purpose 
whatsoever or make use in any other way to his personal advantage or to the 
advantage of any third parties, of any Confidential Information available to 
him.

                                   RECORDS

     7.03.  All files of customers and of Employer and all records of the 
accounts of customers, and any other records, memoranda, etc., relating in 
any manner whatsoever to the customers, Employer's product, the Business of 
Employer, the Confidential Information, suppliers or prospective customers or 
prospective suppliers of Employer, whether prepared by Executive or otherwise 
coming into his possession, shall be the exclusive property of Employer.  All 
such files and records shall be immediately placed in the physical possession 
of Employer on the termination of Executive's employment with Employer or at 
any other time specified by the Board of Directors.  Executive agrees not to 
retain or use duplicates in any form of such files and records by Executive 
is prohibited after the termination of Executive's employment with Employer 
and acknowledges that such use is prohibited.

     7.04.  DISCLOSURE AND ASSIGNMENT OF RIGHTS.

     A.  Executive shall disclose in writing to Employer full and complete 
details respecting any Confidential Information, inventions, enhancements, 
technology or other proprietary assets whether tangible or intangible 
(collectively "Confidential Information and Proprietary Assets") that 
Executive may devise, develop, invent, compile, enhance, design, write or 
discover (whether alone or with others or whether during or after business 
hours, or whether at the premises of Employer, the 

                                       8
<PAGE>

home of Executive or elsewhere) while he is employed by the Employer.  Such 
disclosure shall be made promptly upon such development, enhancement, 
invention, compilation, design, writing or discovery having been made or 
created, and shall be disclosed in writing pursuant to such form as Employer 
may from time to time provide.

     B.  Executive agrees to assign and does hereby irrevocably assign to 
Employer all of his right, title and interest in and to any Confidential 
Information and Proprietary Assets including, but not limited to, that which 
relates to the Business of the Employer that he has devised, developed, 
invented, compiled, enhanced, designed, written or discovered (whether alone 
or with others or whether during or after business hours, or whether at the 
premises of Employer, the home of Executive or elsewhere), or in which he may 
otherwise obtain any rights, while he is or was employed by Employer or which 
he owned at the time of becoming an employee of the Employer.  Executive 
agrees to take any actions, including the execution of documents or 
instruments, that the Employer may reasonably require to effect the 
Executive's assignment of rights pursuant to this Section 7.04, and Executive 
hereby constitutes and appoints, with full power of substitution and 
resubstitution, the President and any Vice President, acting alone, of 
Employer as his attorney-in-fact to execute and deliver on behalf and in the 
stead of Executive any documents or instruments that Executive is obligated 
to execute and deliver pursuant to this Section 7.04.

     C.  Executive shall promptly notify Employer of any patent relating to 
any portion of the Confidential Information and Proprietary Assets that is 
applied for by any person or entity or issued to any person or entity 
(including Executive) ("Patent").  Such notice shall be in writing in such 
form as Employer may from time to time require.  On the written request of 
Employer, Executive shall sell to Employer, and Employer shall purchase from 
Executive, all right, title and interest of Executive in and to any Patent, 
whether or not Executive is employed by Employer at the time the Patent 
issues.  The purchase price for any Patent or Copyright shall be one dollar 
($1) and shall be paid by Employer at the time it makes the written request 
to purchase the Patent or Copyright. Executive agrees to execute any and all 
documents and instruments necessary to evidence and effect the transfer to 
Employer of all right, title and interest of Executive in and to the Patent 
or Copyright.

     D.  At the request of Employer, Executive shall assist Employer in 
applying for and obtaining both domestic and foreign patents or copyrights, 
as the case may be, on all Confidential Information and Proprietary Assets 
that Employer deems to be patentable or copyrightable that he has previously 
devised, developed, invented, compiled, written, designed or discovered or 
that he may devise, develop, invent, compile, design, write or discover, 
(whether alone or with others or whether during or after business hours, or 
whether at the premises of Employer, the home of Executive or elsewhere), 
while he is or was employed by Employer, and Executive shall execute at any 
time or times any and all documents and perform all acts reasonably requested 
by Employer and that Employer deems to be necessary or desirable in order to 
obtain such patents or copyrights or otherwise to vest in Employer full and 
exclusive title and interest in and to all such Confidential Information and 
Proprietary Assets, to protect the same against infringement by others and 
otherwise to aid Employer in connection with any continuations, renewals or 
reissues of any patents or 

                                       9
<PAGE>

copyrights, or in the conduct of any proceedings or litigation in regard 
thereto.  All expenses of procuring any patent or copyrights shall be borne 
by Employer.

     E.  Executive has no inventions and/or other rights or items made or 
conceived by Executive prior to the date hereof that are not in the public 
domain or the property of Employer that in any manner could be deemed to be 
Confidential Information and Proprietary Assets.

                                    BREACH

     7.05.  Executive hereby recognizes and acknowledges that irreparable 
injury or damage shall result to the Business of Employer in the event of a 
breach or threatened breach by Executive of any of the terms or provisions of 
this Article VII, and Executive therefore agrees that Employer shall be 
entitled to an injunction restraining Executive from engaging in any activity 
constituting such breach or threatened breach.  Nothing contained herein 
shall be construed as prohibiting Employer from pursuing any other remedies 
available to Employer at law or in equity for such breach or threatened 
breach, including, but not limited to, the recovery of damages from Executive 
and, if Executive is an employee of the Employer, terminating the employment 
of Executive in accordance with the terms and provisions of this Agreement.

                                   SURVIVAL

     7.06.  Except as set forth below in this Section 7.06, notwithstanding 
the termination of the employment of Executive or the termination of this 
Agreement, the provisions of this Article VII shall survive and be binding 
upon Executive unless a written agreement that specifically refers to the 
termination of the obligations and covenants of this Article VII is executed 
by Employer. The provisions of Section 7.01 shall terminate two (2) years 
after the date of termination unless the termination is made pursuant to 
Section 5.05.  If the termination is made pursuant to Section 5.05 the 
provisions of Section 7.01 shall terminate upon expiration of the Severance 
Period.  The provisions of Section 7.02 shall terminate five (5) years after 
the date of termination (no matter how such termination occurs).

                                 ARTICLE VIII
                                 MISCELLANEOUS

                                    NOTICES

     8.01.  Any notices to be given hereunder by either party to the other 
may be effected either by personal delivery in writing or by mail, registered 
or certified, postage prepaid with return receipt requested.  Mailed notices 
shall be addressed to the parties at the following addresses:

                                       10
<PAGE>

     If to  Employer:    IWL Holdings Corp.
                         Two Galleria Tower, Suite 1925
                         13455 Noel Road
                         Dallas, Texas  75240-6638
                         Attn:  Jere W. Thompson, Jr.
                         Facsimile No.: (972) 788-4243

     If to Executive:    Richard H. Roberson
                         15710 El Dorado Oaks
                         Houston, TX 77059
                         Phone No.: (281) 461-7632
                         Fax No.: 

     Any party may change his or its address by written notice in accordance 
with this Section.  Notices delivered personally shall be deemed communicated 
as of actual receipt, mailed notices shall be deemed communicated as of three 
(3) days after proper mailing.

                     INCLUSION OF ENTIRE AGREEMENT HEREIN

     8.02.  This Agreement supersedes any and all other agreements, either 
oral or in writing, between the parties hereto with respect to the employment 
of Executive by Employer and contains all of the covenants and agreements 
between the parties with respect to such employment in any manner whatsoever. 
Any existing employment agreement between Executive and Employer is hereby 
terminated effective as of the Effective Date and shall be of no further 
force or effect from and after the Effective Date.  

                           LAW GOVERNING AGREEMENT

     8.03.  This Agreement shall be governed by and construed in accordance 
with the laws of the State of Texas, and all obligations shall be performable 
in the State of Texas.

                          ATTORNEY'S FEES AND COSTS

     8.04.  If any action at law or in equity is necessary to enforce or 
interpret the terms of this Agreement, the prevailing party shall be entitled 
to reasonable attorney's fees, costs and necessary disbursements in addition 
to any other relief to which such party may be entitled.

                                       11
<PAGE>

                                     WAIVER

     8.05.  No term or condition of this Agreement shall be deemed to have 
been waived nor shall there be any estoppel to enforce any of the terms or 
provisions of this Agreement except by written instrument of the party 
charged with such waiver or estoppel.  Further, it is agreed that no waiver 
at any time of any of the terms or provisions of this Agreement shall be 
construed as a waiver of any of the other terms or provisions of this 
Agreement and that a waiver at any time of any of the terms or provisions of 
this Agreement shall not be construed as a waiver at any subsequent time of 
the same terms or provisions.

                                  AMENDMENTS

     8.06.  Except as otherwise provided in Section 8.07, no amendment or 
modification of this Agreement shall be deemed effective unless and until 
executed in writing by all of the parties hereto.

                          SEVERABILITY AND LIMITATION

     8.07.  All agreements and covenants contained herein are severable and, 
in the event any of them shall be held to be invalid by any competent court, 
this Agreement shall be interpreted as if such invalid agreements or 
covenants were not contained herein.  Should any court or other legally 
constituted authority determine that for any such agreement or covenant to be 
effective that it must be modified to limit its duration or scope, the 
parties hereto shall consider such agreement or covenant to be amended or 
modified with respect to duration and scope so as to comply with the orders 
of any such court or other legally constituted authority or to be enforceable 
under the laws of the State of Texas, and as to all other portions of such 
agreement or covenants they shall remain in full force and effect as 
originally written.

                                   HEADINGS

     8.08.  All headings set forth in this Agreement are intended for 
convenience only and shall not control or affect the meaning, construction or 
effect of this Agreement or of any of the provisions thereof.

                                  ASSIGNMENT

     8.09.  Executive agrees that his representations, warranties, covenants, 
promises and obligations contained herein may be assigned by Employer to any 
person, partnership, firm, association, corporation or other business entity 
to which Employer may transfer its business and assets or any portion 
thereof. 

                                       12
<PAGE>

     EXECUTED as of the day and year first above written.

                                       EMPLOYER:

                                       IWL HOLDINGS CORP.




                                       By: /s/ Ignatius W. Leonards
                                           -----------------------------------
                                       Its: President
                                            ----------------------------------


                                       EXECUTIVE:



                                             /s/ Richard H. Roberson
                                       ---------------------------------------
                                               Richard H. Roberson




                                       13

<PAGE>

                                 EMPLOYMENT AGREEMENT


     THIS AGREEMENT (this "Agreement") is made, entered into and executed as of
the 16th day of February, 1998, by and between Bryan Olivier (hereinafter
referred to as "Executive"), and IWL Holdings Corp., a Texas corporation
(hereinafter referred to as "Employer").

                                 W I T N E S S E T H:

     WHEREAS, Employer has agreed, subject to certain conditions, to engage in a
business combination (the "Combination") pursuant to which Holdings will acquire
all of the issued and outstanding capital stock of IWL Communications,
Incorporated ("IWL") and CapRock Communications Corp. ("CapRock") and all of the
partnership interests in CapRock Fiber Network, Ltd., a Texas limited
partnership (the "Partnership");

     WHEREAS, one of the conditions to the consummation of the Combination is
the execution of this Agreement by Employer and Executive;

     WHEREAS, Employer desires to employ Executive as Vice President;

     WHEREAS, Executive desires to accept such employment on the terms and
conditions herein set forth;

     NOW, THEREFORE, for and in consideration of the premises and the mutual
covenants herein contained and other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, Employer and Executive
hereby agree as follows.

                                      ARTICLE I
                                      AGREEMENT

                                      EMPLOYMENT

     1.01.     Subject to the terms and conditions of this Agreement, Employer
agrees to employ Executive as Vice President and Executive hereby accepts such
employment with Employer.

                                         TERM

     1.02.     The term (the "Base Term") of this Agreement shall commence on
the date hereof (hereinafter referred as the "Effective Date") and shall
continue thereafter through April 30, 2001, unless earlier terminated as
provided herein or unless extended on such terms and conditions and for such
period of time as may be agreed upon in writing by Employer and Executive (the
Base Term, as so extended or earlier terminated, is referred to herein as the
"Term").

<PAGE>

                                      ARTICLE II
                                 TITLE AND AUTHORITY

                                       GENERAL

     2.01.     Executive agrees to act as Vice President of Employer and perform
the duties of such position or office.  Executive shall render such services as
are normally delegated to such position and such other additional services as
may be delegated to him from time to time by the Board of Directors of Employer
(hereinafter referred to as the "Board of Directors").  Executive further agrees
to hold such other positions of the Employer (in addition to, and not in lieu
of, his position as Vice President of Employer) as may be assigned to him from
time to time by the Board of Directors.  In performing such duties hereunder,
Executive shall give Employer the benefit of his special knowledge, skills,
contacts and business experience and shall devote all of his business time,
attention, ability and energy exclusively to the business of Employer, except
Executive shall be permitted to participate in an MBA program.  Executive shall
office in Houston, Texas at the Employer's place of business located in Houston,
Texas.

                                     ARTICLE III
                                     COMPENSATION

                                     BASE SALARY

     3.01.     As compensation for services rendered under this Agreement,
Executive shall be entitled to receive from the Employer an aggregate minimum
base salary of One Hundred Fifteen Thousand Dollars ($115,000.00) per annum.
The base salary to be paid to Executive hereunder shall be paid in equal
installments in accordance with Employer's normal payroll practice and shall be
less applicable withholding, FICA, medicare, FUTA, SUTA and other taxes, if any.
Such installments shall be paid on such days of each week, as determined by
Employer from time to time.

                               CHANGES IN COMPENSATION

     3.02.     Nothing in this Agreement shall either prevent or require the
Board of Directors from increasing, in its sole and absolute discretion,
prospectively or retroactively, any compensation or other benefits payable or
provided to Executive.

                                 DISCRETIONARY BONUS

     3.03.     A discretionary bonus in an amount determined by the Board of
Directors may be paid to Executive at the end of each calendar year during the
Term of this Agreement.  No obligation to pay any such bonus is hereby created.

                                      ARTICLE IV

                                          2
<PAGE>

                                       BENEFITS

                                  MEDICAL CARE PLAN

     4.01.     Employer shall provide Executive with coverage under a group
medical care plan and life and dental insurance benefits that are the same or
substantially similar to the coverage and benefits provided from time to time to
other executives of Employer.

                                       VACATION

     4.02.     Executive shall be entitled to paid vacation in accordance with
Employer's written vacation policy, as in effect from time to time during the
Term.

                               EMPLOYEE BENEFIT PLANS

     4.03      Executive shall be entitled to participate in Employer's employee
benefit plans established from time to time for its employees, including without
limitation its management incentive bonus plan.

                                      ARTICLE V
                                     TERMINATION

                                       GENERAL

     5.01.     Employer and Executive shall have the right to terminate the
employment of Executive as set forth in this Article V.

                          INCAPACITY OF EXECUTIVE TO PERFORM

     5.02.     If Executive shall become ill or be injured or otherwise become
incapacitated such that, in the good faith opinion of the Board of Directors, he
cannot carry out and perform fully his duties hereunder, and such incapacity
shall continue for a period of ninety (90) consecutive days, the Board of
Directors may, at any time after the ninety (90)-day period has passed, by
giving Executive written notice of such termination, fully and finally terminate
his employment under this Agreement.  Termination under this Section 5.02 shall
be effective as of the date provided in such notice.  In connection with the
termination of Executive pursuant to this Section 5.02, Employer shall pay to
Executive, in equal installments as set forth in Section 3.01, severance pay for
twelve (12) months or, if less than twelve (12) months remain in the Base Term
of this Agreement, an amount equal to his base salary for that number of the
months immediately preceding the termination that is equal to the number of
months remaining in the Base Term but in any event for not less than six (6)
months; provided, however, that such payments shall be reduced by the aggregate
amount of any payments Executive will be entitled to receive over the period
from the date of the termination of his employment hereunder through

                                          3
<PAGE>

the end of the Base Term of this Agreement under any long term disability
insurance policy provided to Executive by Employer.  Upon such termination,
Executive shall receive only such amounts as are earned and due to him under
this Agreement as the result of his activities prior to such termination, and
thereafter no further consideration or compensation shall be owed by Employer to
Executive.  The rights of Executive described in this paragraph shall be in
addition to and not to the exclusion of, the other remedies and termination
rights set forth in this Agreement.

                                  DEATH OF EXECUTIVE

     5.03.     The employment of Executive shall automatically terminate upon
the death of Executive.  Upon such termination, Executive's estate or, if
applicable, his heirs shall receive only such amounts as are earned and due to
Executive under this Agreement as the result of his activities prior to his
death, and thereafter no further consideration or compensation shall be owed by
Employer to Executive or to his estate.

                                TERMINATION FOR CAUSE

     5.04.     In addition to any other remedies that Employer may have at law
or in equity, the Board of Directors may immediately terminate Executive's
employment under this Agreement by giving Executive written or oral notice of
such termination upon the occurrence of any of the following events (by way of
example and not of limitation, an example of other remedies that Employer may
have at law would include other civil and criminal remedies that Employer would
have if Executive were to commit an illegal act (such as fraud or theft), in
addition to Employer's remedy of terminating Executive's employment, such as
filing a civil suit for recovery of stolen goods or property):

               A.   Failure of Executive to be present for work and duties as
     set forth herein for ten (10) or more consecutive business days (except
     during vacation and periods of illness as set forth herein) without giving
     prior written notice to the Board of Directors and receiving approval of
     the Board of Directors of such absence, which approval shall not be
     unreasonably withheld;

               B.   Executive's conviction for a felony offense or commission by
     Executive of any act abhorrent to the community that the Board of Directors
     considers materially damaging to or tending to discredit the reputation of
     Employer or its respective successors and assigns;

               C.   Dishonesty, fraud, willful misconduct, unlawful
     discrimination or theft on the part of Executive (whether within the
     workplace or elsewhere);

               D.   Executive's using for his own benefit or the benefit of any
     third party any material, non-public information, confidential information
     or proprietary information of

                                          4
<PAGE>

     Employer or its respective successors and assigns, or willfully or
     negligently divulging any such information to third parties without the
     prior written consent of the Board of Directors, or any violation by
     Executive of any of its obligations under Article VII hereof;

               E.   Executive's public drunkenness, use of illegal substances or
     drugs or the use, possession, distribution or being under the influence of
     alcohol or illegal substances or drugs in the workplace.  The only
     exception is that Executive may consume alcohol reasonably and responsibly,
     if he or she so chooses, at legitimate business events and functions where
     alcohol is legally available; and

               F.   The determination by the Board of Directors that, in the
     good faith opinion of the Board of Directors, Executive has continually
     failed or refused to comply, after notice of and a reasonable opportunity
     to cure such failure or refusal, with the policies, standards, regulations,
     instructions, or directions of Employer as they currently exist or as they
     may be modified from time to time.

Upon termination for any of the reasons described above, Executive shall receive
only such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination, and thereafter no further consideration
shall be owed by Employer to Executive.  Employer may deduct from Executive's
paycheck any unauthorized expenses, charges or misappropriations for which
Employer may be responsible as the result of Executive's conduct.

                              TERMINATION WITHOUT CAUSE

     5.05.     The Board of Directors may terminate Executive's employment under
this Agreement without any cause whatsoever by giving Executive thirty (30)
days' written notice or, at the election of the Board of Directors, immediate
notice and the payment of an amount equal to his base salary for the previous
thirty (30) days, at the time set forth therein.  In addition to any amounts
owed to the Executive pursuant to the preceding sentence, if such termination is
made pursuant to this Section 5.05, Employer shall pay to Executive severance
pay in an amount equal to the base salary that would be payable to Executive
over the period commencing on the date of termination and ending at the end of
the Base Term of this Agreement, which period shall in no event be less than six
(6) months (the "Severance Period"), assuming the base salary is the amount of
Executive's base salary at the time of the termination, which severance pay
shall be paid to Executive during the Severance Period in equal installments as
set forth in Section 3.01.  In addition, upon such termination the vesting of
all options that are granted to Executive under any stock option plan of
Employer or any subsidiary thereof (provided such options are granted on or
after the date on which the Combination with IWL, CapRock and the Partnership is
consummated) will automatically accelerate, with the result that such options
will be fully vested upon the date of termination.  Upon such termination,
Executive shall receive only such amounts as are owed to him under this
Agreement as the result of his activities prior to such termination and as
expressly set forth in this Section 5.05 and thereafter no further consideration
shall be

                                          5
<PAGE>

owed by the Employer to Executive.

                               TERMINATION BY EXECUTIVE

     5.06.     Executive may, with or without cause, terminate his employment
under this Agreement by giving Employer at least thirty (30) days' prior written
notice of such termination.  Upon such termination, Executive shall receive only
such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination and thereafter no further consideration
shall be owed by Employer to Executive.

                                      ARTICLE VI
                                EXPENSE REIMBURSEMENT

     Executive is authorized to incur reasonable business expenses in connection
with the business of Employer, including expenditures for entertainment and
travel.  Subject to the requirements of this Article VI, Employer will reimburse
Executive from time to time for all business expenses that are determined to be
reasonable by the Board of Directors or any officer of Employer designated by
the Board of Directors to review and approve those expenses.  All reimbursements
are contingent upon Executive providing to the Board of Directors a receipt for
each expenditure and an account book or expense record in which Executive
recorded at or near the time each expenditure was made: the amount of the
expenditure; the time, place and designation of the type of entertainment and
travel or other expense; the business or other reason for the expenditure; and
the names, occupations and addresses of each person who was entertained.

                                     ARTICLE VII
               COVENANT NOT TO COMPETE, TRADE SECRETS, AND ASSIGNMENTS

                               COVENANT NOT TO COMPETE

     7.01.     Executive understands that this Agreement is being entered into
in connection with the Combination and acknowledges that as a result of the
Combination Employer will be assuming a substantial number of stock options
granted to Executive.  Executive also acknowledges that IWL, CapRock and the
Partnership would not be prepared to engage in the Combination unless Executive
agreed to the covenants contained in this Article VII.  Executive is entering
into this Agreement and making the covenants contained in this Article VII,
among other things, to induce Employer, IWL, CapRock and the Partnership to
engage in the Combination.  Executive recognizes and acknowledges that Employer
is placing its confidence and trust in the Executive.  Executive will have
access to information which enables Employer to be successful in its business.
Some of the information may be confidential and constitute trade secrets;
however, that information when combined with all other information regarding
Employer constitutes proprietary information and methods that could seriously
affect the ability of Employer to do business if Executive were allowed to use
it other than for Employer.

                                          6
<PAGE>

Executive, therefore, covenants and agrees that for a period beginning on the
Effective Date and ending one (1) year after the date of termination (except as
set forth in Section 7.06 below) of Executive's employment with Employer,
Executive shall not continue or commence to:

               A.   Either directly or indirectly engage in or carry on any
     business or in any way become associated with any business that is in
     direct or indirect competition with the Business of the Employer (as such
     term is used and defined herein).  As used in this Article VII, the term
     "Business of the Employer" shall include all business activities in which
     the Employer is engaged on the Effective Date or in which the Employer is
     engaged on the date of Executive's termination or at any time between such
     dates, including, but not limited to, the provision of local or long
     distance telecommunications services;

               B.   Attempt in any manner to solicit from any person or entity
     that is or was a client of Employer at any time prior to the date of
     termination of Executive's termination, business of the type performed or
     formerly performed by Employer for such client or to persuade any client or
     Employer to cease to do business or to reduce the amount of business which
     any such client has customarily done with Employer or contemplates doing
     with Employer; or provide to or for any client any services or products of
     the type provided by Employer or formerly provided by Employer (as used
     herein the noun "client" shall mean anyone who is a client or customer,
     supplier, sales representative or other person who does business with
     Employer: (i) as of the date hereof or the date of Executive's termination
     or at the time of the alleged conduct or at any time in between such times;
     (ii) at any time during the twelve (12) month period immediately preceding
     the time of alleged prohibited conduct; and (iii) any prospective persons
     to whom Employer had made a formal presentation (or similar offering of
     services) within a period of twelve (12) months immediately preceding the
     alleged prohibited conduct);

               C.   Either directly or indirectly be or become an employee,
     agent, consultant or representative of or become a director or officer of
     or be otherwise in any manner associated with any person, firm,
     corporation, association or other entity that is engaged in or currently
     intends to become engaged in or is carrying on any business that is in
     direct or indirect competition with the Business of Employer;

               D.   Either directly or indirectly solicit for employment or
     employ any person employed by Employer at any time during the twenty-four
     month (24-month) period immediately preceding such solicitation or
     employment; and

               E.   Either directly or indirectly be or become a shareholder,
     joint venturer in or owner (in whole or in part) of or be a partner of or
     associated with or have any proprietary or financial interest in any firm,
     corporation, joint venture, partnership or association or other entity that
     is engaged in or is carrying on any business that is in direct or indirect
     competition with the Business of Employer.

                                          7
<PAGE>

     Executive hereby recognizes and acknowledges that the existing business
area of Employer extends throughout Texas, Louisiana, Arkansas, Oklahoma, New
Mexico and the Gulf of Mexico and therefore agrees that the covenants not to
compete contained in this Section 7.01 shall be applicable in and throughout
such area.  Executive further warrants and represents that he does not need to
compete with the Business of Employer in the area described above in order to
make a living.  Nothing in this Section will prevent Executive from owning less
than five percent (5%) of the stock of any publicly traded corporation after the
termination of his employment as long as Executive is not a participant in the
management or affairs of the corporation in a manner that would otherwise
violate any prohibition contained in this Section.  Executive further
acknowledges that all references in this Section 7.1 and in Sections 7.02, 7.03
and 7.04 to "Employer" shall include all existing and future subsidiaries of
Employer and any successor thereof, including without limitation IWL, CapRock
and the Partnership upon consummation of the Combination, and the covenant not
to compete granted in this Section 7.1 shall extend to all such entities.

                                    TRADE SECRETS

     7.02.     Executive recognizes and acknowledges that information in
whatever form it may exist pertaining to the financial condition of Employer,
its products, processes, properties, assets, inventions, proprietary rights,
customers, specifically targeted potential customers, markets, technology,
know-how, trade secrets, prospects, proposals, concepts and all other aspects of
the Business of Employer (collectively "Confidential Information") is valuable,
special and unique.  Accordingly, Executive agrees that he will not during the
Term of his employment with Employer or for five (5) years thereafter, disclose
any such Confidential Information to any person, firm, corporation, association,
or other entity for any reason or purpose whatsoever or make use in any other
way to his personal advantage or to the advantage of any third parties, of any
Confidential Information available to him.

                                       RECORDS

     7.03.     All files of customers and of Employer and all records of the
accounts of customers, and any other records, memoranda, etc., relating in any
manner whatsoever to the customers, Employer's product, the Business of
Employer, the Confidential Information, suppliers or prospective customers or
prospective suppliers of Employer, whether prepared by Executive or otherwise
coming into his possession, shall be the exclusive property of Employer.  All
such files and records shall be immediately placed in the physical possession of
Employer on the termination of Executive's employment with Employer or at any
other time specified by the Board of Directors.  Executive agrees not to retain
or use duplicates in any form of such files and records by Executive is
prohibited after the termination of Executive's employment with Employer and
acknowledges that such use is prohibited.

     7.04.     DISCLOSURE AND ASSIGNMENT OF RIGHTS.

                                          8
<PAGE>

     A.   Executive shall disclose in writing to Employer full and complete
details respecting any Confidential Information, inventions, enhancements,
technology or other proprietary assets whether tangible or intangible
(collectively "Confidential Information and Proprietary Assets") that Executive
may devise, develop, invent, compile, enhance, design, write or discover
(whether alone or with others or whether during or after business hours, or
whether at the premises of Employer, the home of Executive or elsewhere) while
he is employed by the Employer.  Such disclosure shall be made promptly upon
such development, enhancement, invention, compilation, design, writing or
discovery having been made or created, and shall be disclosed in writing
pursuant to such form as Employer may from time to time provide.

     B.   Executive agrees to assign and does hereby irrevocably assign to
Employer all of his right, title and interest in and to any Confidential
Information and Proprietary Assets including, but not limited to, that which
relates to the Business of the Employer that he has devised, developed,
invented, compiled, enhanced, designed, written or discovered (whether alone or
with others or whether during or after business hours, or whether at the
premises of Employer, the home of Executive or elsewhere), or in which he may
otherwise obtain any rights, while he is or was employed by Employer or which he
owned at the time of becoming an employee of the Employer.  Executive agrees to
take any actions, including the execution of documents or instruments, that the
Employer may reasonably require to effect the Executive's assignment of rights
pursuant to this Section 7.04, and Executive  hereby constitutes and appoints,
with full power of substitution and resubstitution, the President and any Vice
President, acting alone, of Employer as his attorney-in-fact to execute and
deliver on behalf and in the stead of Executive any documents or instruments
that Executive is obligated to execute and deliver pursuant to this Section
7.04.

     C.   Executive shall promptly notify Employer of any patent relating to any
portion of the Confidential Information and Proprietary Assets that is applied
for by any person or entity or issued to any person or entity (including
Executive) ("Patent").  Such notice shall be in writing in such form as Employer
may from time to time require.  On the written request of Employer, Executive
shall sell to Employer, and Employer shall purchase from Executive, all right,
title and interest of Executive in and to any Patent, whether or not Executive
is employed by Employer at the time the Patent issues.  The purchase price for
any Patent or Copyright shall be one dollar ($1) and shall be paid by Employer
at the time it makes the written request to purchase the Patent or Copyright.
Executive agrees to execute any and all documents and instruments necessary to
evidence and effect the transfer to Employer of all right, title and interest of
Executive in and to the Patent or Copyright.

     D.   At the request of Employer, Executive shall assist Employer in
applying for and obtaining both domestic and foreign patents or copyrights, as
the case may be, on all Confidential Information and Proprietary Assets that
Employer deems to be patentable or copyrightable that he has previously devised,
developed, invented, compiled, written, designed or discovered or that he may
devise, develop, invent, compile, design, write or discover, (whether

                                          9
<PAGE>

alone or with others or whether during or after business hours, or whether at
the premises of Employer, the home of Executive or elsewhere), while he is or
was employed by Employer, and Executive shall execute at any time or times any
and all documents and perform all acts reasonably requested by Employer and that
Employer deems to be necessary or desirable in order to obtain such patents or
copyrights or otherwise to vest in Employer full and exclusive title and
interest in and to all such Confidential Information and Proprietary Assets, to
protect the same against infringement by others and otherwise to aid Employer in
connection with any continuations, renewals or reissues of any patents or
copyrights, or in the conduct of any proceedings or litigation in regard
thereto.  All expenses of procuring any patent or copyrights shall be borne by
Employer.

     E.   Executive has no inventions and/or other rights or items made or
conceived by Executive prior to the date hereof that are not in the public
domain or the property of Employer that in any manner could be deemed to be
Confidential Information and Proprietary Assets.

                                        BREACH

     7.05.     Executive hereby recognizes and acknowledges that irreparable
injury or damage shall result to the Business of Employer in the event of a
breach or threatened breach by Executive of any of the terms or provisions of
this Article VII, and Executive therefore agrees that Employer shall be entitled
to an injunction restraining Executive from engaging in any activity
constituting such breach or threatened breach.  Nothing contained herein shall
be construed as prohibiting Employer from pursuing any other remedies available
to Employer at law or in equity for such breach or threatened breach, including,
but not limited to, the recovery of damages from Executive and, if Executive is
an employee of the Employer, terminating the employment of Executive in
accordance with the terms and provisions of this Agreement.

                                       SURVIVAL

     7.06.     Except as set forth below in this Section 7.06, notwithstanding
the termination of the employment of Executive or the termination of this
Agreement, the provisions of this Article VII shall survive and be binding upon
Executive unless a written agreement that specifically refers to the termination
of the obligations and covenants of this Article VII is executed by Employer.
The provisions of Section 7.01 shall terminate one (1) year after the date of
termination unless the termination is made pursuant to Section 5.05.  If the
termination is made pursuant to Section 5.05 the provisions of Section 7.01
shall terminate upon expiration of the Severance Period.  The provisions of
Section 7.02 shall terminate five (5) years after the date of termination (no
matter how such termination occurs).

                                     ARTICLE VIII
                                    MISCELLANEOUS

                                       NOTICES

                                          10
<PAGE>

     8.01.     Any notices to be given hereunder by either party to the other
may be effected either by personal delivery in writing or by mail, registered or
certified, postage prepaid with return receipt requested.  Mailed notices shall
be addressed to the parties at the following addresses:

          If to  Employer:    IWL Holdings Corp.
                              Two Galleria Tower, Suite 1925
                              13455 Noel Road
                              Dallas, Texas  75240-6638
                              Attn:  Jere W. Thompson, Jr.
                              Facsimile No.: (972) 788-4243

     If to Executive:         3206 Pleasant Cove Ct
                              -----------------------------------
                              Houston, TX 77059

                              Phone No.:  281-461-9649
                                        -------------------------
                              Fax No.:
                                        -------------------------

     Any party may change his or its address by written notice in accordance
with this Section.  Notices delivered personally shall be deemed communicated as
of actual receipt, mailed notices shall be deemed communicated as of three (3)
days after proper mailing.

                         INCLUSION OF ENTIRE AGREEMENT HEREIN

     8.02.     This Agreement supersedes any and all other agreements, either
oral or in writing, between the parties hereto with respect to the employment of
Executive by Employer and contains all of the covenants and agreements between
the parties with respect to such employment in any manner whatsoever, except
agreements pertaining to previously awarded stock options.  Any existing
employment agreement between Executive and Employer is hereby terminated
effective as of the Effective Date and shall be of no further force or effect
from and after the Effective Date.

                               LAW GOVERNING AGREEMENT

     8.03.     This Agreement shall be governed by and construed in accordance
with the laws of the State of Texas, and all obligations shall be performable in
the State of Texas.

                              ATTORNEY'S FEES AND COSTS

     8.04.     If any action at law or in equity is necessary to enforce or
interpret the terms of this Agreement, the prevailing party shall be entitled to
reasonable attorney's fees, costs and necessary disbursements in addition to any
other relief to which such party may be entitled.

                                          11
<PAGE>

                                        WAIVER

     8.05.     No term or condition of this Agreement shall be deemed to have
been waived nor shall there be any estoppel to enforce any of the terms or
provisions of this Agreement except by written instrument of the party charged
with such waiver or estoppel.  Further, it is agreed that no waiver at any time
of any of the terms or provisions of this Agreement shall be construed as a
waiver of any of the other terms or provisions of this Agreement and that a
waiver at any time of any of the terms or provisions of this Agreement shall not
be construed as a waiver at any subsequent time of the same terms or provisions.

                                      AMENDMENTS

     8.06.     Except as otherwise provided in Section 8.07, no amendment or
modification of this Agreement shall be deemed effective unless and until
executed in writing by all of the parties hereto.

                             SEVERABILITY AND LIMITATION

     8.07.     All agreements and covenants contained herein are severable and,
in the event any of them shall be held to be invalid by any competent court,
this Agreement shall be interpreted as if such invalid agreements or covenants
were not contained herein.  Should any court or other legally constituted
authority determine that for any such agreement or covenant to be effective that
it must be modified to limit its duration or scope, the parties hereto shall
consider such agreement or covenant to be amended or modified with respect to
duration and scope so as to comply with the orders of any such court or other
legally constituted authority or to be enforceable under the laws of the State
of Texas, and as to all other portions of such agreement or covenants they shall
remain in full force and effect as originally written.

                                       HEADINGS

     8.08.     All headings set forth in this Agreement are intended for
convenience only and shall not control or affect the meaning, construction or
effect of this Agreement or of any of the provisions thereof.

                                      ASSIGNMENT

     8.09.     Executive agrees that his representations, warranties, covenants,
promises and obligations contained herein may be assigned by Employer to any
person, partnership, firm, association, corporation or other business entity to
which Employer may transfer its business and assets or any portion thereof.

                                          12
<PAGE>

     EXECUTED as of the day and year first above written.


                              EMPLOYER:

                              IWL HOLDINGS CORP.


                              By:  /s/ Ignatius W. Leonards
                                   -------------------------------------------
                              Its:      President
                                   -------------------------------------------


                              EXECUTIVE:


                              /s/ Bryan Olivier
                              ------------------------------------------------
                                        Bryan Olivier


                                          13


<PAGE>

                                 EMPLOYMENT AGREEMENT


     THIS AGREEMENT (this "Agreement") is made, entered into and executed as of
the 16th day of February, 1998, by and between Jere W. Thompson, Jr.
(hereinafter referred to as "Executive"), and IWL Holdings Corp., a Texas
corporation (hereinafter referred to as "Employer").

                                 W I T N E S S E T H:

     WHEREAS, Employer has agreed, subject to certain conditions, to engage in a
business combination (the "Combination") pursuant to which Holdings will acquire
all of the issued and outstanding capital stock of IWL Communications,
Incorporated ("IWL") and CapRock Communications Corp. ("CapRock") and all of the
partnership interests in CapRock Fiber Network, Ltd., a Texas limited
partnership (the "Partnership");

     WHEREAS, one of the conditions to the consummation of the Combination is
the execution of this Agreement by Employer and Executive;

     WHEREAS, Employer desires to employ Executive;

     WHEREAS, Executive desires to accept such employment on the terms and
conditions herein set forth;

     NOW, THEREFORE, for and in consideration of the premises and the mutual
covenants herein contained and other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, Employer and Executive
hereby agree as follows.

                                      ARTICLE I
                                      AGREEMENT

                                      EMPLOYMENT

     1.01.     Subject to the terms and conditions of this Agreement, Employer
agrees to employ Executive and Executive hereby accepts such employment with
Employer.

                                         TERM

     1.02.     The term (the "Base Term") of this Agreement shall commence on
the date hereof (hereinafter referred as the "Effective Date") and shall
continue thereafter through April 30, 2001, unless earlier terminated as
provided herein or unless extended on such terms and conditions and for such
period of time as may be agreed upon in writing by Employer and Executive (the
Base Term, as so extended or earlier terminated, is referred to herein as the
"Term").  


<PAGE>

                                     ARTICLE II
                                 TITLE AND AUTHORITY

                                       GENERAL

     2.01.     Executive agrees to perform the duties of such position or office
which the Board of Directors of Employer (hereinafter referred to as the "Board
of Directors") shall designate for Executive.  Executive shall render such
services as are normally delegated to such position and such other additional
services as may be delegated to him from time to time by the Board of Directors.
Executive further agrees to hold such additional positions of the Employer as
may be assigned to him from time to time by the Board of Directors.  In
performing such duties hereunder, Executive shall give Employer the benefit of
his special knowledge, skills, contacts and business experience and shall devote
all of his business time, attention, ability and energy exclusively to the
business of Employer.  Executive shall office in Dallas, Texas at the Employer's
place of business located in Dallas, Texas.

                                     ARTICLE III
                                     COMPENSATION

                                     BASE SALARY

     3.01.     As compensation for services rendered under this Agreement,
Executive shall be entitled to receive from the Employer an aggregate minimum
base salary of One Hundred and Eighty Thousand Dollars ($180,000) per annum. 
The base salary to be paid to Executive hereunder shall be paid in equal
installments in accordance with Employer's normal payroll practice and shall be
less applicable withholding, FICA, medicare, FUTA, SUTA and other taxes, if any.
Such installments shall be paid on such days of each week, as determined by
Employer from time to time.

                               CHANGES IN COMPENSATION

     3.02.     Nothing in this Agreement shall either prevent or require the
Board of Directors from increasing, in its sole and absolute discretion,
prospectively or retroactively, any compensation or other benefits payable or
provided to Executive.

                                 DISCRETIONARY BONUS

     3.03.     A discretionary bonus in an amount determined by the Board of
Directors may be paid to Executive at the end of each calendar year during the
Term of this Agreement.  No obligation to pay any such bonus is hereby created.


                                         2
<PAGE>
                                      ARTICLE IV
                                       BENEFITS

                                  MEDICAL CARE PLAN

     4.01.     Employer shall provide Executive with coverage under a group
medical care plan and life and dental insurance benefits that are the same or
substantially similar to the coverage and benefits provided from time to time to
other executives of Employer.

                                       VACATION

     4.02.     Executive shall be entitled to paid vacation in accordance with
Employer's written vacation policy, as in effect from time to time during the
Term.

                               EMPLOYEE BENEFIT PLANS

     4.03      Executive shall be entitled to participate in Employer's employee
benefit plans established from time to time for its employees, including without
limitation its management incentive bonus plan.

                                      ARTICLE V
                                     TERMINATION

                                       GENERAL

     5.01.     Employer and Executive shall have the right to terminate the
employment of Executive as set forth in this Article V.

                          INCAPACITY OF EXECUTIVE TO PERFORM

     5.02.     If Executive shall become ill or be injured or otherwise become
incapacitated such that, in the good faith opinion of the Board of Directors, he
cannot carry out and perform fully his duties hereunder, and such incapacity
shall continue for a period of ninety (90) consecutive days, the Board of
Directors may, at any time after the ninety (90)-day period has passed, by
giving Executive written notice of such termination, fully and finally terminate
his employment under this Agreement.  Termination under this Section 5.02 shall
be effective as of the date provided in such notice.  In connection with the
termination of Executive pursuant to this Section 5.02, Employer shall pay to
Executive, in equal installments as set forth in Section 3.01, severance pay for
twelve (12) months or, if less than twelve (12) months remain in the Base Term
of this Agreement, an amount equal to his base salary for that number of the
months immediately preceding the termination that is equal to the number of
months remaining in the Base Term but in any event for not less than six (6)
months; provided, however, that such payments shall be reduced by the aggregate
amount of any payments Executive will be entitled to receive over the period
from the date of the termination of his


                                         3
<PAGE>

employment hereunder through the end of the Base Term of this Agreement under 
any long term disability insurance policy provided to Executive by Employer.  
Upon such termination, Executive shall receive only such amounts as are 
earned and due to him under this Agreement as the result of his activities 
prior to such termination, and thereafter no further consideration or 
compensation shall be owed by Employer to Executive. The rights of Executive 
described in this paragraph shall be in addition to and not to the exclusion 
of, the other remedies and termination rights set forth in this Agreement.

                                  DEATH OF EXECUTIVE

     5.03.     The employment of Executive shall automatically terminate upon
the death of Executive.  Upon such termination, Executive's estate or, if
applicable, his heirs shall receive only such amounts as are earned and due to
Executive under this Agreement as the result of his activities prior to his
death, and thereafter no further consideration or compensation shall be owed by
Employer to Executive or to his estate.

                                TERMINATION FOR CAUSE

     5.04.     In addition to any other remedies that Employer may have at law
or in equity, the Board of Directors may immediately terminate Executive's
employment under this Agreement by giving Executive written or oral notice of
such termination upon the occurrence of any of the following events:

               A.   Failure of Executive to be present for work and duties as 
     set forth herein for ten (10) or more consecutive business days (except 
     during vacation and periods of illness as set forth herein) without 
     giving prior written notice to the Board of Directors and receiving 
     approval of the Board of Directors of such absence, which approval shall 
     not be unreasonably withheld;

               B.   Executive's conviction for a felony offense or commission 
     by Executive of any act abhorrent to the community that the Board of 
     Directors considers materially damaging to or tending to discredit the 
     reputation of Employer or its respective successors and assigns;

               C.   Dishonesty, fraud, willful misconduct, unlawful 
     discrimination or theft on the part of Executive (whether within the 
     workplace or elsewhere);

               D.   Executive's using for his own benefit or the benefit of 
     any third party any material, non-public information, confidential 
     information or proprietary information of Employer or its respective 
     successors and assigns, or willfully or negligently divulging any such 
     information to third parties without the prior written consent of the 
     Board of Directors, or any violation by Executive of any of its 
     obligations under Article VII hereof;


                                         4
<PAGE>

               E.   Executive's public drunkenness, use of illegal substances 
     or drugs or the use, possession, distribution or being under the 
     influence of alcohol or illegal substances or drugs in the workplace.  
     The only exception is that Executive may consume alcohol reasonably and 
     responsibly, if he or she so chooses, at legitimate business events and 
     functions where alcohol is legally available; and 

               F.   The determination by the Board of Directors that, in the
     good faith opinion of the Board of Directors, Executive has continually 
     failed or refused to comply, after notice of and a reasonable 
     opportunity to cure such failure or refusal, with the policies, 
     standards, regulations, instructions, or directions of Employer as they 
     currently exist or as they may be modified from time to time.

Upon termination for any of the reasons described above, Executive shall receive
only such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination, and thereafter no further consideration
shall be owed by Employer to Executive.  Employer may deduct from Executive's
paycheck any unauthorized expenses, charges or misappropriations for which
Employer may be responsible as the result of Executive's conduct.

                              TERMINATION WITHOUT CAUSE

     5.05.     The Board of Directors may terminate Executive's employment under
this Agreement without any cause whatsoever by giving Executive thirty (30)
days' written notice or, at the election of the Board of Directors, immediate
notice and the payment of an amount equal to his base salary for the previous
thirty (30) days, at the time set forth therein.  In addition to any amounts
owed to the Executive pursuant to the preceding sentence, if such termination is
made pursuant to this Section 5.05, Employer shall pay to Executive severance
pay in an amount equal to the base salary that would be payable to Executive
over the period commencing on the date of termination and ending at the end of
the Base Term of this Agreement, which period shall in no event be less than six
(6) months (the "Severance Period"), assuming the base salary is the amount of
Executive's base salary at the time of the termination, which severance pay
shall be paid to Executive during the Severance Period in equal installments as
set forth in Section 3.01.  In addition, upon such termination the vesting of
all options that are granted to Executive under any stock option plan of
Employer or any subsidiary thereof (provided such options are granted on or
after the date on which the Combination with IWL, CapRock and the Partnership is
consummated) will automatically accelerate, with the result that such options
will be fully vested upon the date of termination.  Upon such termination,
Executive shall receive only such amounts as are owed to him under this
Agreement as the result of his activities prior to such termination and as
expressly set forth in this Section 5.05 and thereafter no further consideration
shall be owed by the Employer to Executive.


                                         5
<PAGE>

                               TERMINATION BY EXECUTIVE

     5.06.     Executive may, with or without cause, terminate his employment
under this Agreement by giving Employer at least thirty (30) days' prior written
notice of such termination.  Upon such termination, Executive shall receive only
such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination and thereafter no further consideration
shall be owed by Employer to Executive.

                                     ARTICLE VI
                                EXPENSE REIMBURSEMENT

     Executive is authorized to incur reasonable business expenses in connection
with the business of Employer, including expenditures for entertainment and
travel.  Subject to the requirements of this Article VI, Employer will reimburse
Executive from time to time for all business expenses that are determined to be
reasonable by the Board of Directors or any officer of Employer designated by
the Board of Directors to review and approve those expenses.  All reimbursements
are contingent upon Executive providing to the Board of Directors a receipt for
each expenditure and an account book or expense record in which Executive
recorded at or near the time each expenditure was made: the amount of the
expenditure; the time, place and designation of the type of entertainment and
travel or other expense; the business or other reason for the expenditure; and
the names, occupations and addresses of each person who was entertained.

                                     ARTICLE VII
               COVENANT NOT TO COMPETE, TRADE SECRETS, AND ASSIGNMENTS

                               COVENANT NOT TO COMPETE

     7.01.     Executive understands that this Agreement is being entered into
in connection with the Combination and acknowledges that as a result of the
Combination Executive will receive a substantial number of shares of the common
stock of Employer.  Executive also acknowledges that IWL, CapRock and the
Partnership would not be prepared to engage in the Combination unless Executive
agreed to the covenants contained in this Article VII.  Executive is entering
into this Agreement and making the covenants contained in this Article VII,
among other things, to induce Employer, IWL, CapRock and the Partnership to
engage in the Combination.  Executive recognizes and acknowledges that Employer
is placing its confidence and trust in the Executive.  Executive will have
access to information which enables Employer to be successful in its business. 
Some of the information may be confidential and constitute trade secrets;
however, that information when combined with all other information regarding
Employer constitutes proprietary information and methods that could seriously
affect the ability of Employer to do business if Executive were allowed to use
it other than for Employer.  Executive, therefore, covenants and agrees that for
a period beginning on the Effective Date and ending two (2) years after the date
of termination (except as set forth in Section 7.06 below) of Executive's
employment with Employer, Executive shall not continue or commence to:


                                         6
<PAGE>

               A.   Either directly or indirectly engage in or carry on any 
     business or in any way become associated with any business that is in 
     direct or indirect competition with the Business of the Employer (as 
     such term is used and defined herein).  As used in this Article VII, the 
     term "Business of the Employer" shall include all business activities in 
     which the Employer is engaged on the Effective Date or in which the 
     Employer is engaged on the date of Executive's termination or at any 
     time between such dates, including, but not limited to, the provision of 
     local or long distance telecommunications services;

               B.   Attempt in any manner to solicit from any person or 
     entity that is or was a client of Employer at any time prior to the date 
     of termination of Executive's termination, business of the type 
     performed or formerly performed by Employer for such client or to 
     persuade any client or Employer to cease to do business or to reduce the 
     amount of business which any such client has customarily done with 
     Employer or contemplates doing with Employer; or provide to or for any 
     client any services or products of the type provided by Employer or 
     formerly provided by Employer (as used herein the noun "client" shall 
     mean anyone who is a client or customer, supplier, sales representative 
     or other person who does business with Employer: (i) as of the date 
     hereof or the date of Executive's termination or at the time of the 
     alleged conduct or at any time in between such times; (ii) at any time 
     during the twelve (12) month period immediately preceding the time of 
     alleged prohibited conduct; and (iii) any prospective persons to whom 
     Employer had made a formal presentation (or similar offering of 
     services) within a period of twelve (12) months immediately preceding 
     the alleged prohibited conduct);

               C.   Either directly or indirectly be or become an employee, 
     agent, consultant or representative of or become a director or officer 
     of or be otherwise in any manner associated with any person, firm, 
     corporation, association or other entity that is engaged in or currently 
     intends to become engaged in or is carrying on any business that is in 
     direct or indirect competition with the Business of Employer;

               D.   Either directly or indirectly solicit for employment or 
     employ any person employed by Employer at any time during the 
     twenty-four month (24-month) period immediately preceding such 
     solicitation or employment; and

               E.   Either directly or indirectly be or become a shareholder, 
     joint venturer in or owner (in whole or in part) of or be a partner of 
     or associated with or have any proprietary or financial interest in any 
     firm, corporation, joint venture, partnership or association or other 
     entity that is engaged in or is carrying on any business that is in 
     direct or indirect competition with the Business of Employer.

     Executive hereby recognizes and acknowledges that the existing business
area of Employer extends throughout the United States and therefore agrees that
the covenants not to compete contained in this Section 7.01 shall be applicable
in and throughout such area.  Executive further warrants and represents that,
because of his varied skill and abilities, he does not need to compete with the


                                         7
<PAGE>

Business of Employer in the area described above, in order to make a living. 
Nothing in this Section will prevent Executive from owning less than five
percent (5%) of the stock of any publicly traded corporation after the
termination of his employment as long as Executive is not a participant in the
management or affairs of the corporation in a manner that would otherwise
violate any prohibition contained in this Section.  Executive further
acknowledges that all references in this Section 7.1 and in Sections 7.02, 7.03
and 7.04 to "Employer" shall include all existing and future subsidiaries of
Employer and any successor thereof, including without limitation IWL, CapRock
and the Partnership upon consummation of the Combination, and the covenant not
to compete granted in this Section 7.1 shall extend to all such entities.

                                    TRADE SECRETS

     7.02.     Executive recognizes and acknowledges that information in 
whatever form it may exist pertaining to the financial condition of Employer, 
its products, processes, properties, assets, inventions, proprietary rights, 
customers, specifically targeted potential customers, markets, technology, 
know-how, trade secrets, prospects, proposals, concepts and all other aspects 
of the Business of Employer (collectively "Confidential Information") is 
valuable, special and unique.  Accordingly, Executive agrees that he will not 
during the Term of his employment with Employer or for five (5) years 
thereafter, disclose any such Confidential Information to any person, firm, 
corporation, association, or other entity for any reason or purpose 
whatsoever or make use in any other way to his personal advantage or to the 
advantage of any third parties, of any Confidential Information available to 
him.

                                       RECORDS

     7.03.     All files of customers and of Employer and all records of the
accounts of customers, and any other records, memoranda, etc., relating in any
manner whatsoever to the customers, Employer's product, the Business of
Employer, the Confidential Information, suppliers or prospective customers or
prospective suppliers of Employer, whether prepared by Executive or otherwise
coming into his possession, shall be the exclusive property of Employer.  All
such files and records shall be immediately placed in the physical possession of
Employer on the termination of Executive's employment with Employer or at any
other time specified by the Board of Directors.  Executive agrees not to retain
or use duplicates in any form of such files and records by Executive is
prohibited after the termination of Executive's employment with Employer and
acknowledges that such use is prohibited.

     7.04.     DISCLOSURE AND ASSIGNMENT OF RIGHTS.

     A.   Executive shall disclose in writing to Employer full and complete
details respecting any Confidential Information, inventions, enhancements,
technology or other proprietary assets whether tangible or intangible
(collectively "Confidential Information and Proprietary Assets") that Executive
may devise, develop, invent, compile, enhance, design, write or discover
(whether alone or with others or whether during or after business hours, or
whether at the premises of Employer, the


                                         8
<PAGE>

home of Executive or elsewhere) while he is employed by the Employer.  Such 
disclosure shall be made promptly upon such development, enhancement, 
invention, compilation, design, writing or discovery having been made or 
created, and shall be disclosed in writing pursuant to such form as Employer 
may from time to time provide.

     B.   Executive agrees to assign and does hereby irrevocably assign to
Employer all of his right, title and interest in and to any Confidential
Information and Proprietary Assets including, but not limited to, that which
relates to the Business of the Employer that he has devised, developed,
invented, compiled, enhanced, designed, written or discovered (whether alone or
with others or whether during or after business hours, or whether at the
premises of Employer, the home of Executive or elsewhere), or in which he may
otherwise obtain any rights, while he is or was employed by Employer or which he
owned at the time of becoming an employee of the Employer.  Executive agrees to
take any actions, including the execution of documents or instruments, that the
Employer may reasonably require to effect the Executive's assignment of rights
pursuant to this Section 7.04, and Executive  hereby constitutes and appoints,
with full power of substitution and resubstitution, the President and any Vice
President, acting alone, of Employer as his attorney-in-fact to execute and
deliver on behalf and in the stead of Executive any documents or instruments
that Executive is obligated to execute and deliver pursuant to this Section
7.04.

     C.   Executive shall promptly notify Employer of any patent relating to any
portion of the Confidential Information and Proprietary Assets that is applied
for by any person or entity or issued to any person or entity (including
Executive) ("Patent").  Such notice shall be in writing in such form as Employer
may from time to time require.  On the written request of Employer, Executive
shall sell to Employer, and Employer shall purchase from Executive, all right,
title and interest of Executive in and to any Patent, whether or not Executive
is employed by Employer at the time the Patent issues.  The purchase price for
any Patent or Copyright shall be one dollar ($1) and shall be paid by Employer
at the time it makes the written request to purchase the Patent or Copyright. 
Executive agrees to execute any and all documents and instruments necessary to
evidence and effect the transfer to Employer of all right, title and interest of
Executive in and to the Patent or Copyright.

     D.   At the request of Employer, Executive shall assist Employer in
applying for and obtaining both domestic and foreign patents or copyrights, as
the case may be, on all Confidential Information and Proprietary Assets that
Employer deems to be patentable or copyrightable that he has previously devised,
developed, invented, compiled, written, designed or discovered or that he may
devise, develop, invent, compile, design, write or discover, (whether alone or
with others or whether during or after business hours, or whether at the
premises of Employer, the home of Executive or elsewhere), while he is or was
employed by Employer, and Executive shall execute at any time or times any and
all documents and perform all acts reasonably requested by Employer and that
Employer deems to be necessary or desirable in order to obtain such patents or
copyrights or otherwise to vest in Employer full and exclusive title and
interest in and to all such Confidential Information and Proprietary Assets, to
protect the same against infringement by others and otherwise to aid Employer in
connection with any continuations, renewals or reissues of any patents or


                                         9
<PAGE>

copyrights, or in the conduct of any proceedings or litigation in regard
thereto.  All expenses of procuring any patent or copyrights shall be borne by
Employer.

     E.   Executive has no inventions and/or other rights or items made or
conceived by Executive prior to the date hereof that are not in the public
domain or the property of Employer that in any manner could be deemed to be
Confidential Information and Proprietary Assets.

                                        BREACH

     7.05.     Executive hereby recognizes and acknowledges that irreparable
injury or damage shall result to the Business of Employer in the event of a
breach or threatened breach by Executive of any of the terms or provisions of
this Article VII, and Executive therefore agrees that Employer shall be entitled
to an injunction restraining Executive from engaging in any activity
constituting such breach or threatened breach.  Nothing contained herein shall
be construed as prohibiting Employer from pursuing any other remedies available
to Employer at law or in equity for such breach or threatened breach, including,
but not limited to, the recovery of damages from Executive and, if Executive is
an employee of the Employer, terminating the employment of Executive in
accordance with the terms and provisions of this Agreement.

                                       SURVIVAL

     7.06.     Except as set forth below in this Section 7.06, notwithstanding
the termination of the employment of Executive or the termination of this
Agreement, the provisions of this Article VII shall survive and be binding upon
Executive unless a written agreement that specifically refers to the termination
of the obligations and covenants of this Article VII is executed by Employer.
The provisions of Section 7.01 shall terminate two (2) years after the date of
termination unless the termination is made pursuant to Section 5.05.  If the
termination is made pursuant to Section 5.05 the provisions of Section 7.01
shall terminate upon expiration of the Severance Period.  The provisions of
Section 7.02 shall terminate five (5) years after the date of termination (no
matter how such termination occurs).

                                    ARTICLE VIII
                                    MISCELLANEOUS

                                       NOTICES

     8.01.     Any notices to be given hereunder by either party to the other
may be effected either by personal delivery in writing or by mail, registered or
certified, postage prepaid with return receipt requested.  Mailed notices shall
be addressed to the parties at the following addresses:


                                         10
<PAGE>

     If to  Employer:    IWL Holdings Corp.
                         Two Galleria Tower, Suite 1925
                         13455 Noel Road
                         Dallas, Texas  75240-6638
                         Attn:  Jere W. Thompson, Jr.
                         Facsimile No.: (972) 788-4243

     If to Executive:
                         -----------------------------------------------------

                         -----------------------------------------------------

                         -----------------------------------------------------
                         Phone No.:
                                   -------------------------------------------
                         Fax No.:
                                 ---------------------------------------------

     Any party may change his or its address by written notice in accordance
with this Section.  Notices delivered personally shall be deemed communicated as
of actual receipt, mailed notices shall be deemed communicated as of three (3)
days after proper mailing.

                         INCLUSION OF ENTIRE AGREEMENT HEREIN

     8.02.     This Agreement supersedes any and all other agreements, either
oral or in writing, between the parties hereto with respect to the employment of
Executive by Employer and contains all of the covenants and agreements between
the parties with respect to such employment in any manner whatsoever.  Any
existing employment agreement between Executive and Employer is hereby
terminated effective as of the Effective Date and shall be of no further force
or effect from and after the Effective Date.  

                               LAW GOVERNING AGREEMENT

     8.03.     This Agreement shall be governed by and construed in accordance
with the laws of the State of Texas, and all obligations shall be performable in
the State of Texas.

                              ATTORNEY'S FEES AND COSTS

     8.04.     If any action at law or in equity is necessary to enforce or
interpret the terms of this Agreement, the prevailing party shall be entitled to
reasonable attorney's fees, costs and necessary disbursements in addition to any
other relief to which such party may be entitled.


                                         11
<PAGE>

                                        WAIVER

     8.05.     No term or condition of this Agreement shall be deemed to have
been waived nor shall there be any estoppel to enforce any of the terms or
provisions of this Agreement except by written instrument of the party charged
with such waiver or estoppel.  Further, it is agreed that no waiver at any time
of any of the terms or provisions of this Agreement shall be construed as a
waiver of any of the other terms or provisions of this Agreement and that a
waiver at any time of any of the terms or provisions of this Agreement shall not
be construed as a waiver at any subsequent time of the same terms or provisions.

                                      AMENDMENTS

     8.06.     Except as otherwise provided in Section 8.07, no amendment or
modification of this Agreement shall be deemed effective unless and until
executed in writing by all of the parties hereto.

                             SEVERABILITY AND LIMITATION

     8.07.     All agreements and covenants contained herein are severable and,
in the event any of them shall be held to be invalid by any competent court,
this Agreement shall be interpreted as if such invalid agreements or covenants
were not contained herein.  Should any court or other legally constituted
authority determine that for any such agreement or covenant to be effective that
it must be modified to limit its duration or scope, the parties hereto shall
consider such agreement or covenant to be amended or modified with respect to
duration and scope so as to comply with the orders of any such court or other
legally constituted authority or to be enforceable under the laws of the State
of Texas, and as to all other portions of such agreement or covenants they shall
remain in full force and effect as originally written.

                                       HEADINGS

     8.08.     All headings set forth in this Agreement are intended for
convenience only and shall not control or affect the meaning, construction or
effect of this Agreement or of any of the provisions thereof.

                                      ASSIGNMENT

     8.09.     Executive agrees that his representations, warranties, covenants,
promises and obligations contained herein may be assigned by Employer to any
person, partnership, firm, association, corporation or other business entity to
which Employer may transfer its business and assets or any portion thereof. 


                                         12
<PAGE>

     EXECUTED as of the day and year first above written.


                              EMPLOYER:

                              IWL HOLDINGS CORP.


                              By:  /s/ Ignatius W. Leonards
                                 ---------------------------------------------
                              Its: President
                                  --------------------------------------------



                              EXECUTIVE:


                              /s/ Jere W. Thompson, Jr.
                              -----------------------------------------------
                                   Jere W. Thompson, Jr.


                                         13

<PAGE>

                                 EMPLOYMENT AGREEMENT


     THIS AGREEMENT (this "Agreement") is made, entered into and executed as of
the 16th day of February, 1998, by and between Scott Roberts (hereinafter
referred to as "Executive"), and IWL Holdings Corp., a Texas corporation
(hereinafter referred to as "Employer").

                                 W I T N E S S E T H:

     WHEREAS, Employer has agreed, subject to certain conditions, to engage in a
business combination (the "Combination") pursuant to which Holdings will acquire
all of the issued and outstanding capital stock of IWL Communications,
Incorporated ("IWL") and CapRock Communications Corp. ("CapRock") and all of the
partnership interests in CapRock Fiber Network, Ltd., a Texas limited
partnership (the "Partnership");

     WHEREAS, one of the conditions to the consummation of the Combination is
the execution of this Agreement by Employer and Executive;

     WHEREAS, Employer desires to employ Executive;

     WHEREAS, Executive desires to accept such employment on the terms and
conditions herein set forth;

     NOW, THEREFORE, for and in consideration of the premises and the mutual
covenants herein contained and other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, Employer and Executive
hereby agree as follows.

                                      ARTICLE I
                                      AGREEMENT

                                      EMPLOYMENT

     1.01.  Subject to the terms and conditions of this Agreement, Employer
agrees to employ Executive and Executive hereby accepts such employment with
Employer.

                                         TERM

     1.02.  The term (the "Base Term") of this Agreement shall commence on
the date hereof (hereinafter referred as the "Effective Date") and shall
continue thereafter through April 30, 2001, unless earlier terminated as
provided herein or unless extended on such terms and conditions and for such
period of time as may be agreed upon in writing by Employer and Executive (the
Base Term, as so extended or earlier terminated, is referred to herein as the
"Term").


<PAGE>


                                      ARTICLE II
                                 TITLE AND AUTHORITY

                                       GENERAL

     2.01.  Executive agrees to perform the duties of such position or 
office which the Board of Directors of Employer (hereinafter referred to as 
the "Board of Directors") shall designate for Executive.  Executive shall 
render such services as are normally delegated to such position and such 
other additional services as may be delegated to him from time to time by the 
Board of Directors. Executive further agrees to hold such additional 
positions of the Employer as may be assigned to him from time to time by the 
Board of Directors.  In performing such duties hereunder, Executive shall 
give Employer the benefit of his special knowledge, skills, contacts and 
business experience and shall devote all of his business time, attention, 
ability and energy exclusively to the business of Employer.  Executive shall 
office in Dallas, Texas at the Employer's place of business located in 
Dallas, Texas.

                                     ARTICLE III
                                    COMPENSATION

                                     BASE SALARY

     3.01.  As compensation for services rendered under this Agreement, 
Executive shall be entitled to receive from the Employer an aggregate minimum 
base salary of One Hundred Thirty-Three Thousand, Three Hundred and 
Thirty-Three Dollars ($133,333) per annum.  The base salary to be paid to 
Executive hereunder shall be paid in equal installments in accordance with 
Employer's normal payroll practice and shall be less applicable withholding, 
FICA, medicare, FUTA, SUTA and other taxes, if any.  Such installments shall 
be paid on such days of each week, as determined by Employer from time to 
time.

                               CHANGES IN COMPENSATION

     3.02.  Nothing in this Agreement shall either prevent or require the
Board of Directors from increasing, in its sole and absolute discretion,
prospectively or retroactively, any compensation or other benefits payable or
provided to Executive.

                                 DISCRETIONARY BONUS

     3.03.  A discretionary bonus in an amount determined by the Board of
Directors may be paid to Executive at the end of each calendar year during the
Term of this Agreement.  No obligation to pay any such bonus is hereby created.


                                       2
<PAGE>

                                     ARTICLE IV
                                      BENEFITS

                                  MEDICAL CARE PLAN

     4.01.  Employer shall provide Executive with coverage under a group 
medical care plan and life and dental insurance benefits that are the same or 
substantially similar to the coverage and benefits provided from time to time 
to other executives of Employer.

                                       VACATION

     4.02.  Executive shall be entitled to paid vacation in accordance with
Employer's written vacation policy, as in effect from time to time during the
Term.

                               EMPLOYEE BENEFIT PLANS

     4.03  Executive shall be entitled to participate in Employer's employee
benefit plans established from time to time for its employees, including without
limitation its management incentive bonus plan.

                                      ARTICLE V
                                     TERMINATION

                                       GENERAL

     5.01.  Employer and Executive shall have the right to terminate the
employment of Executive as set forth in this Article V.

                          INCAPACITY OF EXECUTIVE TO PERFORM

     5.02.  If Executive shall become ill or be injured or otherwise 
become incapacitated such that, in the good faith opinion of the Board of 
Directors, he cannot carry out and perform fully his duties hereunder, and 
such incapacity shall continue for a period of ninety (90) consecutive days, 
the Board of Directors may, at any time after the ninety (90)-day period has 
passed, by giving Executive written notice of such termination, fully and 
finally terminate his employment under this Agreement.  Termination under 
this Section 5.02 shall be effective as of the date provided in such notice.  
In connection with the termination of Executive pursuant to this Section 
5.02, Employer shall pay to Executive, in equal installments as set forth in 
Section 3.01, severance pay for twelve (12) months or, if less than twelve 
(12) months remain in the Base Term of this Agreement, an amount equal to his 
base salary for that number of the months immediately preceding the 
termination that is equal to the number of months remaining in the Base Term 
but in any event for not less than six (6) months; provided, however, that 
such payments shall be reduced by the aggregate amount of any payments 
Executive will be entitled to receive over the period from the date of the 
termination of his

                                       3

<PAGE>


employment hereunder through the end of the Base Term of this Agreement under 
any long term disability insurance policy provided to Executive by Employer.  
Upon such termination, Executive shall receive only such amounts as are 
earned and due to him under this Agreement as the result of his activities 
prior to such termination, and thereafter no further consideration or 
compensation shall be owed by Employer to Executive. The rights of Executive 
described in this paragraph shall be in addition to and not to the exclusion 
of, the other remedies and termination rights set forth in this Agreement.

                                  DEATH OF EXECUTIVE

     5.03.  The employment of Executive shall automatically terminate upon
the death of Executive.  Upon such termination, Executive's estate or, if
applicable, his heirs shall receive only such amounts as are earned and due to
Executive under this Agreement as the result of his activities prior to his
death, and thereafter no further consideration or compensation shall be owed by
Employer to Executive or to his estate.

                                TERMINATION FOR CAUSE

     5.04.  In addition to any other remedies that Employer may have at law
or in equity, the Board of Directors may immediately terminate Executive's
employment under this Agreement by giving Executive written or oral notice of
such termination upon the occurrence of any of the following events:

               A.   Failure of Executive to be present for work and duties as
     set forth herein for ten (10) or more consecutive business days (except
     during vacation and periods of illness as set forth herein) without giving
     prior written notice to the Board of Directors and receiving approval of
     the Board of Directors of such absence, which approval shall not be
     unreasonably withheld;

               B.   Executive's conviction for a felony offense or commission
     by Executive of any act abhorrent to the community that the Board of
     Directors considers materially damaging to or tending to discredit the
     reputation of Employer or its respective successors and assigns;

               C.   Dishonesty, fraud, willful misconduct, unlawful
     discrimination or theft on the part of Executive (whether within the
     workplace or elsewhere);

               D.   Executive's using for his own benefit or the benefit of any
     third party any material, non-public information, confidential information
     or proprietary information of Employer or its respective successors and
     assigns, or willfully or negligently divulging any such information to
     third parties without the prior written consent of the Board of Directors,
     or any violation by Executive of any of its obligations under Article VII
     hereof;


                                       4
<PAGE>


               E.   Executive's public drunkenness, use of illegal substances 
     or drugs or the use, possession, distribution or being under the influence
     of alcohol or illegal substances or drugs in the workplace.  The only
     exception is that Executive may consume alcohol reasonably and responsibly,
     if he or she so chooses, at legitimate business events and functions where
     alcohol is legally available; and 

               F.   The determination by the Board of Directors that, in the
     good faith opinion of the Board of Directors, Executive has continually
     failed or refused to comply, after notice of and a reasonable opportunity
     to cure such failure or refusal, with the policies, standards, regulations,
     instructions, or directions of Employer as they currently exist or as they
     may be modified from time to time.

Upon termination for any of the reasons described above, Executive shall 
receive only such amounts as are owed to him under this Agreement as the 
result of his activities prior to such termination, and thereafter no further 
consideration shall be owed by Employer to Executive.  Employer may deduct from
Executive's paycheck any unauthorized expenses, charges or misappropriations
for which Employer may be responsible as the result of Executive's conduct.

                              TERMINATION WITHOUT CAUSE

     5.05.  The Board of Directors may terminate Executive's employment under 
this Agreement without any cause whatsoever by giving Executive thirty (30) 
days' written notice or, at the election of the Board of Directors, immediate 
notice and the payment of an amount equal to his base salary for the previous 
thirty (30) days, at the time set forth therein.  In addition to any amounts 
owed to the Executive pursuant to the preceding sentence, if such termination 
is made pursuant to this Section 5.05, Employer shall pay to Executive 
severance pay in an amount equal to the base salary that would be payable to 
Executive over the period commencing on the date of termination and ending at 
the end of the Base Term of this Agreement, which period shall in no event be 
less than six (6) months (the "Severance Period"), assuming the base salary 
is the amount of Executive's base salary at the time of the termination, 
which severance pay shall be paid to Executive during the Severance Period in 
equal installments as set forth in Section 3.01.  In addition, upon such 
termination the vesting of all options that are granted to Executive under 
any stock option plan of Employer or any subsidiary thereof (provided such 
options are granted on or after the date on which the Combination with IWL, 
CapRock and the Partnership is consummated) will automatically accelerate, 
with the result that such options will be fully vested upon the date of 
termination.  Upon such termination, Executive shall receive only such 
amounts as are owed to him under this Agreement as the result of his 
activities prior to such termination and as expressly set forth in this 
Section 5.05 and thereafter no further consideration shall be owed by the 
Employer to Executive.

                                       5

<PAGE>


                               TERMINATION BY EXECUTIVE

     5.06.  Executive may, with or without cause, terminate his employment 
under this Agreement by giving Employer at least thirty (30) days' prior 
written notice of such termination.  Upon such termination, Executive shall 
receive only such amounts as are owed to him under this Agreement as the 
result of his activities prior to such termination and thereafter no further 
consideration shall be owed by Employer to Executive.

                                      ARTICLE VI
                                EXPENSE REIMBURSEMENT

     Executive is authorized to incur reasonable business expenses in 
connection with the business of Employer, including expenditures for 
entertainment and travel.  Subject to the requirements of this Article VI, 
Employer will reimburse Executive from time to time for all business expenses 
that are determined to be reasonable by the Board of Directors or any officer 
of Employer designated by the Board of Directors to review and approve those 
expenses.  All reimbursements are contingent upon Executive providing to the 
Board of Directors a receipt for each expenditure and an account book or 
expense record in which Executive recorded at or near the time each 
expenditure was made: the amount of the expenditure; the time, place and 
designation of the type of entertainment and travel or other expense; the 
business or other reason for the expenditure; and the names, occupations and 
addresses of each person who was entertained.

                                     ARTICLE VII
               COVENANT NOT TO COMPETE, TRADE SECRETS, AND ASSIGNMENTS

                               COVENANT NOT TO COMPETE

     7.01.  Executive understands that this Agreement is being entered into 
in connection with the Combination and acknowledges that as a result of the 
Combination Executive will receive a substantial number of shares of the 
common stock of Employer.  Executive also acknowledges that IWL, CapRock and 
the Partnership would not be prepared to engage in the Combination unless 
Executive agreed to the covenants contained in this Article VII.  Executive 
is entering into this Agreement and making the covenants contained in this 
Article VII, among other things, to induce Employer, IWL, CapRock and the 
Partnership to engage in the Combination.  Executive recognizes and 
acknowledges that Employer is placing its confidence and trust in the 
Executive.  Executive will have access to information which enables Employer 
to be successful in its business. Some of the information may be confidential 
and constitute trade secrets; however, that information when combined with 
all other information regarding Employer constitutes proprietary information 
and methods that could seriously affect the ability of Employer to do 
business if Executive were allowed to use it other than for Employer.  
Executive, therefore, covenants and agrees that for a period beginning on the 
Effective Date and ending two (2) years after the date of termination (except 
as set forth in Section 7.06 below) of Executive's employment with Employer, 
Executive shall not continue or commence to:


                                       6
<PAGE>


               A.   Either directly or indirectly engage in or carry on any 
     business or in any way become associated with any business that is in
     direct or indirect competition with the Business of the Employer (as such
     term is used and defined herein).  As used in this Article VII, the term
     "Business of the Employer" shall include all business activities in which
     the Employer is engaged on the Effective Date or in which the Employer is
     engaged on the date of Executive's termination or at any time between such
     dates, including, but not limited to, the provision of local or long
     distance telecommunications services;

               B.   Attempt in any manner to solicit from any person or 
     entity that is or was a client of Employer at any time prior to the date of
     termination of Executive's termination, business of the type performed or
     formerly performed by Employer for such client or to persuade any client or
     Employer to cease to do business or to reduce the amount of business which
     any such client has customarily done with Employer or contemplates doing
     with Employer; or provide to or for any client any services or products of
     the type provided by Employer or formerly provided by Employer (as used
     herein the noun "client" shall mean anyone who is a client or customer,
     supplier, sales representative or other person who does business with
     Employer: (i) as of the date hereof or the date of Executive's termination
     or at the time of the alleged conduct or at any time in between such times;
     (ii) at any time during the twelve (12) month period immediately preceding
     the time of alleged prohibited conduct; and (iii) any prospective persons
     to whom Employer had made a formal presentation (or similar offering of
     services) within a period of twelve (12) months immediately preceding the
     alleged prohibited conduct);

               C.   Either directly or indirectly be or become an employee,
     agent, consultant or representative of or become a director or officer of
     or be otherwise in any manner associated with any person, firm,
     corporation, association or other entity that is engaged in or currently
     intends to become engaged in or is carrying on any business that is in
     direct or indirect competition with the Business of Employer;

               D.   Either directly or indirectly solicit for employment or
     employ any person employed by Employer at any time during the twenty-four
     month (24-month) period immediately preceding such solicitation or
     employment; and

               E.   Either directly or indirectly be or become a shareholder,
     joint venturer in or owner (in whole or in part) of or be a partner of or
     associated with or have any proprietary or financial interest in any firm,
     corporation, joint venture, partnership or association or other entity that
     is engaged in or is carrying on any business that is in direct or indirect
     competition with the Business of Employer.

     Executive hereby recognizes and acknowledges that the existing business 
area of Employer extends throughout the United States and therefore agrees 
that the covenants not to compete contained in this Section 7.01 shall be 
applicable in and throughout such area.  Executive further warrants and 
represents that, because of his varied skill and abilities, he does not need 
to compete with the


                                       7
<PAGE>


Business of Employer in the area described above, in order to make a living. 
Nothing in this Section will prevent Executive from owning less than five 
percent (5%) of the stock of any publicly traded corporation after the 
termination of his employment as long as Executive is not a participant in 
the management or affairs of the corporation in a manner that would otherwise 
violate any prohibition contained in this Section.  Executive further 
acknowledges that all references in this Section 7.1 and in Sections 7.02, 
7.03 and 7.04 to "Employer" shall include all existing and future 
subsidiaries of Employer and any successor thereof, including without 
limitation IWL, CapRock and the Partnership upon consummation of the 
Combination, and the covenant not to compete granted in this Section 7.1 
shall extend to all such entities.

                                    TRADE SECRETS

     7.02.  Executive recognizes and acknowledges that information in 
whatever form it may exist pertaining to the financial condition of Employer, 
its products, processes, properties, assets, inventions, proprietary rights, 
customers, specifically targeted potential customers, markets, technology, 
know-how, trade secrets, prospects, proposals, concepts and all other aspects 
of the Business of Employer (collectively "Confidential Information") is 
valuable, special and unique.  Accordingly, Executive agrees that he will not 
during the Term of his employment with Employer or for five (5) years 
thereafter, disclose any such Confidential Information to any person, firm, 
corporation, association, or other entity for any reason or purpose 
whatsoever or make use in any other way to his personal advantage or to the 
advantage of any third parties, of any Confidential Information available to 
him.

                                       RECORDS

     7.03.  All files of customers and of Employer and all records of the 
accounts of customers, and any other records, memoranda, etc., relating in 
any manner whatsoever to the customers, Employer's product, the Business of 
Employer, the Confidential Information, suppliers or prospective customers or 
prospective suppliers of Employer, whether prepared by Executive or otherwise 
coming into his possession, shall be the exclusive property of Employer.  All 
such files and records shall be immediately placed in the physical possession 
of Employer on the termination of Executive's employment with Employer or at 
any other time specified by the Board of Directors.  Executive agrees not to 
retain or use duplicates in any form of such files and records by Executive 
is prohibited after the termination of Executive's employment with Employer 
and acknowledges that such use is prohibited.

     7.04.  DISCLOSURE AND ASSIGNMENT OF RIGHTS.

     A.   Executive shall disclose in writing to Employer full and complete
details respecting any Confidential Information, inventions, enhancements,
technology or other proprietary assets whether tangible or intangible
(collectively "Confidential Information and Proprietary Assets") that Executive
may devise, develop, invent, compile, enhance, design, write or discover
(whether alone or with others or whether during or after business hours, or
whether at the premises of Employer, the


                                       8
<PAGE>


home of Executive or elsewhere) while he is employed by the Employer.  Such 
disclosure shall be made promptly upon such development, enhancement, 
invention, compilation, design, writing or discovery having been made or 
created, and shall be disclosed in writing pursuant to such form as Employer 
may from time to time provide.

     B.   Executive agrees to assign and does hereby irrevocably assign to 
Employer all of his right, title and interest in and to any Confidential 
Information and Proprietary Assets including, but not limited to, that which 
relates to the Business of the Employer that he has devised, developed, 
invented, compiled, enhanced, designed, written or discovered (whether alone 
or with others or whether during or after business hours, or whether at the 
premises of Employer, the home of Executive or elsewhere), or in which he may 
otherwise obtain any rights, while he is or was employed by Employer or which 
he owned at the time of becoming an employee of the Employer.  Executive 
agrees to take any actions, including the execution of documents or 
instruments, that the Employer may reasonably require to effect the 
Executive's assignment of rights pursuant to this Section 7.04, and Executive 
hereby constitutes and appoints, with full power of substitution and 
resubstitution, the President and any Vice President, acting alone, of 
Employer as his attorney-in-fact to execute and deliver on behalf and in the 
stead of Executive any documents or instruments that Executive is obligated 
to execute and deliver pursuant to this Section 7.04.

     C.   Executive shall promptly notify Employer of any patent relating to 
any portion of the Confidential Information and Proprietary Assets that is 
applied for by any person or entity or issued to any person or entity 
(including Executive) ("Patent").  Such notice shall be in writing in such 
form as Employer may from time to time require.  On the written request of 
Employer, Executive shall sell to Employer, and Employer shall purchase from 
Executive, all right, title and interest of Executive in and to any Patent, 
whether or not Executive is employed by Employer at the time the Patent 
issues.  The purchase price for any Patent or Copyright shall be one dollar 
($1) and shall be paid by Employer at the time it makes the written request 
to purchase the Patent or Copyright. Executive agrees to execute any and all 
documents and instruments necessary to evidence and effect the transfer to 
Employer of all right, title and interest of Executive in and to the Patent 
or Copyright.

     D.   At the request of Employer, Executive shall assist Employer in 
applying for and obtaining both domestic and foreign patents or copyrights, 
as the case may be, on all Confidential Information and Proprietary Assets 
that Employer deems to be patentable or copyrightable that he has previously 
devised, developed, invented, compiled, written, designed or discovered or 
that he may devise, develop, invent, compile, design, write or discover, 
(whether alone or with others or whether during or after business hours, or 
whether at the premises of Employer, the home of Executive or elsewhere), 
while he is or was employed by Employer, and Executive shall execute at any 
time or times any and all documents and perform all acts reasonably requested 
by Employer and that Employer deems to be necessary or desirable in order to 
obtain such patents or copyrights or otherwise to vest in Employer full and 
exclusive title and interest in and to all such Confidential Information and 
Proprietary Assets, to protect the same against infringement by others and 
otherwise to aid Employer in connection with any continuations, renewals or 
reissues of any patents or


                                       9
<PAGE>


copyrights, or in the conduct of any proceedings or litigation in regard 
thereto.  All expenses of procuring any patent or copyrights shall be borne 
by Employer.

     E.   Executive has no inventions and/or other rights or items made or 
conceived by Executive prior to the date hereof that are not in the public 
domain or the property of Employer that in any manner could be deemed to be 
Confidential Information and Proprietary Assets.

                                        BREACH

     7.05.  Executive hereby recognizes and acknowledges that irreparable 
injury or damage shall result to the Business of Employer in the event of a 
breach or threatened breach by Executive of any of the terms or provisions of 
this Article VII, and Executive therefore agrees that Employer shall be 
entitled to an injunction restraining Executive from engaging in any activity 
constituting such breach or threatened breach.  Nothing contained herein 
shall be construed as prohibiting Employer from pursuing any other remedies 
available to Employer at law or in equity for such breach or threatened 
breach, including, but not limited to, the recovery of damages from Executive 
and, if Executive is an employee of the Employer, terminating the employment 
of Executive in accordance with the terms and provisions of this Agreement.   

                                     SURVIVAL

     7.06.  Except as set forth below in this Section 7.06, notwithstanding 
the termination of the employment of Executive or the termination of this 
Agreement, the provisions of this Article VII shall survive and be binding 
upon Executive unless a written agreement that specifically refers to the 
termination of the obligations and covenants of this Article VII is executed 
by Employer. The provisions of Section 7.01 shall terminate two (2) years 
after the date of termination unless the termination is made pursuant to 
Section 5.05.  If the termination is made pursuant to Section 5.05 the 
provisions of Section 7.01 shall terminate upon expiration of the Severance 
Period.  The provisions of Section 7.02 shall terminate five (5) years after 
the date of termination (no matter how such termination occurs).

                                     ARTICLE VIII
                                    MISCELLANEOUS

                                       NOTICES

     8.01.  Any notices to be given hereunder by either party to the other 
may be effected either by personal delivery in writing or by mail, registered 
or certified, postage prepaid with return receipt requested.  Mailed notices 
shall be addressed to the parties at the following addresses:


                                       10
<PAGE>

     If to  Employer:    IWL Holdings Corp.
                         Two Galleria Tower, Suite 1925
                         13455 Noel Road
                         Dallas, Texas  75240-6638
                         Attn:  Scott Roberts
                         Facsimile No.: (972) 788-4243

     If to Executive:    _______________________________
                         _______________________________
                         _______________________________
                         Phone No.:_____________________
                         Fax No.:_______________________

     Any party may change his or its address by written notice in accordance 
with this Section.  Notices delivered personally shall be deemed communicated 
as of actual receipt, mailed notices shall be deemed communicated as of three 
(3) days after proper mailing.

                         INCLUSION OF ENTIRE AGREEMENT HEREIN

     8.02.  This Agreement supersedes any and all other agreements, either 
oral or in writing, between the parties hereto with respect to the employment 
of Executive by Employer and contains all of the covenants and agreements 
between the parties with respect to such employment in any manner whatsoever. 
Any existing employment agreement between Executive and Employer is hereby 
terminated effective as of the Effective Date and shall be of no further 
force or effect from and after the Effective Date.  

                               LAW GOVERNING AGREEMENT

     8.03.  This Agreement shall be governed by and construed in accordance 
with the laws of the State of Texas, and all obligations shall be performable 
in the State of Texas.

                              ATTORNEY'S FEES AND COSTS

     8.04.  If any action at law or in equity is necessary to enforce or 
interpret the terms of this Agreement, the prevailing party shall be entitled 
to reasonable attorney's fees, costs and necessary disbursements in addition 
to any other relief to which such party may be entitled.


                                       11
<PAGE>


                                        WAIVER

     8.05.  No term or condition of this Agreement shall be deemed to have 
been waived nor shall there be any estoppel to enforce any of the terms or 
provisions of this Agreement except by written instrument of the party 
charged with such waiver or estoppel.  Further, it is agreed that no waiver 
at any time of any of the terms or provisions of this Agreement shall be 
construed as a waiver of any of the other terms or provisions of this 
Agreement and that a waiver at any time of any of the terms or provisions of 
this Agreement shall not be construed as a waiver at any subsequent time of 
the same terms or provisions.

                                      AMENDMENTS

     8.06.  Except as otherwise provided in Section 8.07, no amendment or 
modification of this Agreement shall be deemed effective unless and until 
executed in writing by all of the parties hereto.

                             SEVERABILITY AND LIMITATION

     8.07.  All agreements and covenants contained herein are severable 
and, in the event any of them shall be held to be invalid by any competent 
court, this Agreement shall be interpreted as if such invalid agreements or 
covenants were not contained herein.  Should any court or other legally 
constituted authority determine that for any such agreement or covenant to be 
effective that it must be modified to limit its duration or scope, the 
parties hereto shall consider such agreement or covenant to be amended or 
modified with respect to duration and scope so as to comply with the orders 
of any such court or other legally constituted authority or to be enforceable 
under the laws of the State of Texas, and as to all other portions of such 
agreement or covenants they shall remain in full force and effect as 
originally written.

                                       HEADINGS

     8.08.  All headings set forth in this Agreement are intended for 
convenience only and shall not control or affect the meaning, construction or 
effect of this Agreement or of any of the provisions thereof.

                                      ASSIGNMENT

     8.09.  Executive agrees that his representations, warranties, covenants,
promises and obligations contained herein may be assigned by Employer to any
person, partnership, firm, association, corporation or other business entity to
which Employer may transfer its business and assets or any portion thereof. 


                                       12
<PAGE>


     EXECUTED as of the day and year first above written.


                              EMPLOYER:

                              IWL HOLDINGS CORP.


                              By: /s/ Ignatius W. Leonards
                                 --------------------------
                              Its: President
                                  -------------------------


                              EXECUTIVE:


                                /s/ Scott Roberts
                              -----------------------------
                                    Scott Roberts



                                       13



<PAGE>

                            EMPLOYMENT AGREEMENT


     THIS AGREEMENT (this "Agreement") is made, entered into and executed as 
of the 16th day of February, 1998, by and between Tim Rogers (hereinafter 
referred to as "Executive"), and IWL Holdings Corp., a Texas corporation 
(hereinafter referred to as "Employer").

                            W I T N E S S E T H:

     WHEREAS, Employer has agreed, subject to certain conditions, to engage 
in a business combination (the "Combination") pursuant to which Holdings will 
acquire all of the issued and outstanding capital stock of IWL 
Communications, Incorporated ("IWL") and CapRock Communications Corp. 
("CapRock") and all of the partnership interests in CapRock Fiber Network, 
Ltd., a Texas limited partnership (the "Partnership");

     WHEREAS, one of the conditions to the consummation of the Combination is 
the execution of this Agreement by Employer and Executive;

     WHEREAS, Employer desires to employ Executive;

     WHEREAS, Executive desires to accept such employment on the terms and 
conditions herein set forth;

     NOW, THEREFORE, for and in consideration of the premises and the mutual 
covenants herein contained and other good and valuable consideration, the 
receipt and sufficiency of which is hereby acknowledged, Employer and 
Executive hereby agree as follows.

                                 ARTICLE I
                                 AGREEMENT

                                 EMPLOYMENT

     1.01.     Subject to the terms and conditions of this Agreement, 
Employer agrees to employ Executive and Executive hereby accepts such 
employment with Employer.

                                    TERM

     1.02.     The term (the "Base Term") of this Agreement shall commence on 
the date hereof (hereinafter referred as the "Effective Date") and shall 
continue thereafter through April 30, 2001, unless earlier terminated as 
provided herein or unless extended on such terms and conditions and for such 
period of time as may be agreed upon in writing by Employer and Executive 
(the Base Term, as so extended or earlier terminated, is referred to herein 
as the "Term").  

<PAGE>
                                  ARTICLE II
                              TITLE AND AUTHORITY

                                   GENERAL

     2.01.     Executive agrees to perform the duties of such position or 
office which the Board of Directors of Employer (hereinafter referred to as 
the "Board of Directors") shall designate for Executive.  Executive shall 
render such services as are normally delegated to such position and such 
other additional services as may be delegated to him from time to time by the 
Board of Directors. Executive further agrees to hold such additional 
positions of the Employer as may be assigned to him from time to time by the 
Board of Directors.  In performing such duties hereunder, Executive shall 
give Employer the benefit of his special knowledge, skills, contacts and 
business experience and shall devote all of his business time, attention, 
ability and energy exclusively to the business of Employer.  Executive shall 
office in Dallas, Texas at the Employer's place of business located in 
Dallas, Texas.

                                  ARTICLE III
                                  COMPENSATION

                                  BASE SALARY

     3.01.     As compensation for services rendered under this Agreement, 
Executive shall be entitled to receive from the Employer an aggregate minimum 
base salary of One Hundred Thirty-Three Thousand, Three Hundred and 
Thirty-Three Dollars ($133,333) per annum.  The base salary to be paid to 
Executive hereunder shall be paid in equal installments in accordance with 
Employer's normal payroll practice and shall be less applicable withholding, 
FICA, medicare, FUTA, SUTA and other taxes, if any.  Such installments shall 
be paid on such days of each week, as determined by Employer from time to 
time.

                            CHANGES IN COMPENSATION

     3.02.     Nothing in this Agreement shall either prevent or require the 
Board of Directors from increasing, in its sole and absolute discretion, 
prospectively or retroactively, any compensation or other benefits payable or 
provided to Executive.

                              DISCRETIONARY BONUS

     3.03.     A discretionary bonus in an amount determined by the Board of 
Directors may be paid to Executive at the end of each calendar year during 
the Term of this Agreement.  No obligation to pay any such bonus is hereby 
created.

                                      2
<PAGE>

                                  ARTICLE IV
                                   BENEFITS

                               MEDICAL CARE PLAN

     4.01.     Employer shall provide Executive with coverage under a group 
medical care plan and life and dental insurance benefits that are the same or 
substantially similar to the coverage and benefits provided from time to time 
to other executives of Employer.

                                    VACATION

     4.02.     Executive shall be entitled to paid vacation in accordance 
with Employer's written vacation policy, as in effect from time to time 
during the Term.

                            EMPLOYEE BENEFIT PLANS

     4.03      Executive shall be entitled to participate in Employer's 
employee benefit plans established from time to time for its employees, 
including without limitation its management incentive bonus plan.

                                   ARTICLE V
                                  TERMINATION

                                    GENERAL

     5.01.     Employer and Executive shall have the right to terminate the 
employment of Executive as set forth in this Article V.

                       INCAPACITY OF EXECUTIVE TO PERFORM

     5.02.     If Executive shall become ill or be injured or otherwise 
become incapacitated such that, in the good faith opinion of the Board of 
Directors, he cannot carry out and perform fully his duties hereunder, and 
such incapacity shall continue for a period of ninety (90) consecutive days, 
the Board of Directors may, at any time after the ninety (90)-day period has 
passed, by giving Executive written notice of such termination, fully and 
finally terminate his employment under this Agreement.  Termination under 
this Section 5.02 shall be effective as of the date provided in such notice.  
In connection with the termination of Executive pursuant to this Section 
5.02, Employer shall pay to Executive, in equal installments as set forth in 
Section 3.01, severance pay for twelve (12) months or, if less than twelve 
(12) months remain in the Base Term of this Agreement, an amount equal to his 
base salary for that number of the months immediately preceding the 
termination that is equal to the number of months remaining in the Base Term 
but in any event for not less than six (6) months; provided, however, that 
such payments shall be reduced by the aggregate amount of any payments 
Executive will be entitled to receive over the period from the date of the 
termination of his

                                      3
<PAGE>

employment hereunder through the end of the Base Term of this Agreement under 
any long term disability insurance policy provided to Executive by Employer.  
Upon such termination, Executive shall receive only such amounts as are 
earned and due to him under this Agreement as the result of his activities 
prior to such termination, and thereafter no further consideration or 
compensation shall be owed by Employer to Executive. The rights of Executive 
described in this paragraph shall be in addition to and not to the exclusion 
of, the other remedies and termination rights set forth in this Agreement.

                               DEATH OF EXECUTIVE

     5.03.     The employment of Executive shall automatically terminate upon 
the death of Executive.  Upon such termination, Executive's estate or, if 
applicable, his heirs shall receive only such amounts as are earned and due 
to Executive under this Agreement as the result of his activities prior to 
his death, and thereafter no further consideration or compensation shall be 
owed by Employer to Executive or to his estate.

                             TERMINATION FOR CAUSE

     5.04.     In addition to any other remedies that Employer may have at 
law or in equity, the Board of Directors may immediately terminate 
Executive's employment under this Agreement by giving Executive written or 
oral notice of such termination upon the occurrence of any of the following 
events:

               A.   Failure of Executive to be present for work and duties as 
     set forth herein for ten (10) or more consecutive business days (except 
     during vacation and periods of illness as set forth herein) without 
     giving prior written notice to the Board of Directors and receiving 
     approval of the Board of Directors of such absence, which approval shall 
     not be unreasonably withheld;

               B.   Executive's conviction for a felony offense or commission 
     by Executive of any act abhorrent to the community that the Board of 
     Directors considers materially damaging to or tending to discredit the 
     reputation of Employer or its respective successors and assigns;

               C.   Dishonesty, fraud, willful misconduct, unlawful 
     discrimination or theft on the part of Executive (whether within the 
     workplace or elsewhere);

               D.   Executive's using for his own benefit or the benefit of 
     any third party any material, non-public information, confidential 
     information or proprietary information of Employer or its respective 
     successors and assigns, or willfully or negligently divulging any such 
     information to third parties without the prior written consent of the 
     Board of Directors, or any violation by Executive of any of its 
     obligations under Article VII hereof;

                                      4
<PAGE>

               E.   Executive's public drunkenness, use of illegal substances 
     or drugs or the use, possession, distribution or being under the 
     influence of alcohol or illegal substances or drugs in the workplace.  
     The only exception is that Executive may consume alcohol reasonably and 
     responsibly, if he or she so chooses, at legitimate business events and 
     functions where alcohol is legally available; and 

               F.   The determination by the Board of Directors that, 
     in the good faith opinion of the Board of Directors, Executive has 
     continually failed or refused to comply, after notice of and a 
     reasonable opportunity to cure such failure or refusal, with the 
     policies, standards, regulations, instructions, or directions of 
     Employer as they currently exist or as they may be modified from time 
     to time.


Upon termination for any of the reasons described above, Executive shall 
receive only such amounts as are owed to him under this Agreement as the 
result of his activities prior to such termination, and thereafter no further 
consideration shall be owed by Employer to Executive.  Employer may deduct 
from Executive's paycheck any unauthorized expenses, charges or 
misappropriations for which Employer may be responsible as the result of 
Executive's conduct.

                           TERMINATION WITHOUT CAUSE

     5.05.     The Board of Directors may terminate Executive's employment 
under this Agreement without any cause whatsoever by giving Executive thirty 
(30) days' written notice or, at the election of the Board of Directors, 
immediate notice and the payment of an amount equal to his base salary for 
the previous thirty (30) days, at the time set forth therein.  In addition to 
any amounts owed to the Executive pursuant to the preceding sentence, if such 
termination is made pursuant to this Section 5.05, Employer shall pay to 
Executive severance pay in an amount equal to the base salary that would be 
payable to Executive over the period commencing on the date of termination 
and ending at the end of the Base Term of this Agreement, which period shall 
in no event be less than six (6) months (the "Severance Period"), assuming 
the base salary is the amount of Executive's base salary at the time of the 
termination, which severance pay shall be paid to Executive during the 
Severance Period in equal installments as set forth in Section 3.01.  In 
addition, upon such termination the vesting of all options that are granted 
to Executive under any stock option plan of Employer or any subsidiary 
thereof (provided such options are granted on or after the date on which the 
Combination with IWL, CapRock and the Partnership is consummated) will 
automatically accelerate, with the result that such options will be fully 
vested upon the date of termination.  Upon such termination, Executive shall 
receive only such amounts as are owed to him under this Agreement as the 
result of his activities prior to such termination and as expressly set forth 
in this Section 5.05 and thereafter no further consideration shall be owed by 
the Employer to Executive.

                                      5
<PAGE>

                            TERMINATION BY EXECUTIVE

     5.06.     Executive may, with or without cause, terminate his employment 
under this Agreement by giving Employer at least thirty (30) days' prior 
written notice of such termination.  Upon such termination, Executive shall 
receive only such amounts as are owed to him under this Agreement as the 
result of his activities prior to such termination and thereafter no further 
consideration shall be owed by Employer to Executive.

                                   ARTICLE VI
                             EXPENSE REIMBURSEMENT

     Executive is authorized to incur reasonable business expenses in 
connection with the business of Employer, including expenditures for 
entertainment and travel.  Subject to the requirements of this Article VI, 
Employer will reimburse Executive from time to time for all business expenses 
that are determined to be reasonable by the Board of Directors or any officer 
of Employer designated by the Board of Directors to review and approve those 
expenses.  All reimbursements are contingent upon Executive providing to the 
Board of Directors a receipt for each expenditure and an account book or 
expense record in which Executive recorded at or near the time each 
expenditure was made: the amount of the expenditure; the time, place and 
designation of the type of entertainment and travel or other expense; the 
business or other reason for the expenditure; and the names, occupations and 
addresses of each person who was entertained.

                                   ARTICLE VII
               COVENANT NOT TO COMPETE, TRADE SECRETS, AND ASSIGNMENTS

                             COVENANT NOT TO COMPETE

     7.01.     Executive understands that this Agreement is being entered 
into in connection with the Combination and acknowledges that as a result of 
the Combination Executive will receive a substantial number of shares of the 
common stock of Employer.  Executive also acknowledges that IWL, CapRock and 
the Partnership would not be prepared to engage in the Combination unless 
Executive agreed to the covenants contained in this Article VII.  Executive 
is entering into this Agreement and making the covenants contained in this 
Article VII, among other things, to induce Employer, IWL, CapRock and the 
Partnership to engage in the Combination.  Executive recognizes and 
acknowledges that Employer is placing its confidence and trust in the 
Executive.  Executive will have access to information which enables Employer 
to be successful in its business. Some of the information may be confidential 
and constitute trade secrets; however, that information when combined with 
all other information regarding Employer constitutes proprietary information 
and methods that could seriously affect the ability of Employer to do 
business if Executive were allowed to use it other than for Employer.  
Executive, therefore, covenants and agrees that for a period beginning on the 
Effective Date and ending two (2) years after the date of termination (except 
as set forth in Section 7.06 below) of Executive's employment with Employer, 
Executive shall not continue or commence to:

                                      6
<PAGE>

               A.   Either directly or indirectly engage in or carry on any 
     business or in any way become associated with any business that is in 
     direct or indirect competition with the Business of the Employer (as 
     such term is used and defined herein).  As used in this Article VII, the 
     term "Business of the Employer" shall include all business activities in 
     which the Employer is engaged on the Effective Date or in which the 
     Employer is engaged on the date of Executive's termination or at any 
     time between such dates, including, but not limited to, the provision of 
     local or long distance telecommunications services;

               B.   Attempt in any manner to solicit from any person or 
     entity that is or was a client of Employer at any time prior to the date 
     of termination of Executive's termination, business of the type 
     performed or formerly performed by Employer for such client or to 
     persuade any client or Employer to cease to do business or to reduce the 
     amount of business which any such client has customarily done with 
     Employer or contemplates doing with Employer; or provide to or for any 
     client any services or products of the type provided by Employer or 
     formerly provided by Employer (as used herein the noun "client" shall 
     mean anyone who is a client or customer, supplier, sales representative 
     or other person who does business with Employer: (i) as of the date 
     hereof or the date of Executive's termination or at the time of the 
     alleged conduct or at any time in between such times; (ii) at any time 
     during the twelve (12) month period immediately preceding the time of 
     alleged prohibited conduct; and (iii) any prospective persons to whom 
     Employer had made a formal presentation (or similar offering of 
     services) within a period of twelve (12) months immediately preceding 
     the alleged prohibited conduct);

               C.   Either directly or indirectly be or become an employee, 
     agent, consultant or representative of or become a director or officer 
     of or be otherwise in any manner associated with any person, firm, 
     corporation, association or other entity that is engaged in or currently 
     intends to become engaged in or is carrying on any business that is in 
     direct or indirect competition with the Business of Employer;

               D.   Either directly or indirectly solicit for employment or 
     employ any person employed by Employer at any time during the 
     twenty-four month (24-month) period immediately preceding such 
     solicitation or employment; and

               E.   Either directly or indirectly be or become a shareholder, 
     joint venturer in or owner (in whole or in part) of or be a partner of 
     or associated with or have any proprietary or financial interest in any 
     firm, corporation, joint venture, partnership or association or other 
     entity that is engaged in or is carrying on any business that is in 
     direct or indirect competition with the Business of Employer.

     Executive hereby recognizes and acknowledges that the existing business 
area of Employer extends throughout the United States and therefore agrees 
that the covenants not to compete contained in this Section 7.01 shall be 
applicable in and throughout such area.  Executive further warrants and 
represents that, because of his varied skill and abilities, he does not need 
to compete with the

                                      7
<PAGE>

Business of Employer in the area described above, in order to make a living. 
Nothing in this Section will prevent Executive from owning less than five 
percent (5%) of the stock of any publicly traded corporation after the 
termination of his employment as long as Executive is not a participant in 
the management or affairs of the corporation in a manner that would otherwise 
violate any prohibition contained in this Section.  Executive further 
acknowledges that all references in this Section 7.1 and in Sections 7.02, 
7.03 and 7.04 to "Employer" shall include all existing and future 
subsidiaries of Employer and any successor thereof, including without 
limitation IWL, CapRock and the Partnership upon consummation of the 
Combination, and the covenant not to compete granted in this Section 7.1 
shall extend to all such entities.

                                 TRADE SECRETS

     7.02.     Executive recognizes and acknowledges that information in 
whatever form it may exist pertaining to the financial condition of Employer, 
its products, processes, properties, assets, inventions, proprietary rights, 
customers, specifically targeted potential customers, markets, technology, 
know-how, trade secrets, prospects, proposals, concepts and all other aspects 
of the Business of Employer (collectively "Confidential Information") is 
valuable, special and unique.  Accordingly, Executive agrees that he will not 
during the Term of his employment with Employer or for five (5) years 
thereafter, disclose any such Confidential Information to any person, firm, 
corporation, association, or other entity for any reason or purpose 
whatsoever or make use in any other way to his personal advantage or to the 
advantage of any third parties, of any Confidential Information available to 
him.

                                    RECORDS

     7.03.     All files of customers and of Employer and all records of the 
accounts of customers, and any other records, memoranda, etc., relating in 
any manner whatsoever to the customers, Employer's product, the Business of 
Employer, the Confidential Information, suppliers or prospective customers or 
prospective suppliers of Employer, whether prepared by Executive or otherwise 
coming into his possession, shall be the exclusive property of Employer.  All 
such files and records shall be immediately placed in the physical possession 
of Employer on the termination of Executive's employment with Employer or at 
any other time specified by the Board of Directors.  Executive agrees not to 
retain or use duplicates in any form of such files and records by Executive 
is prohibited after the termination of Executive's employment with Employer 
and acknowledges that such use is prohibited.

     7.04.     DISCLOSURE AND ASSIGNMENT OF RIGHTS.

     A.        Executive shall disclose in writing to Employer full and 
complete details respecting any Confidential Information, inventions, 
enhancements, technology or other proprietary assets whether tangible or 
intangible (collectively "Confidential Information and Proprietary Assets") 
that Executive may devise, develop, invent, compile, enhance, design, write 
or discover (whether alone or with others or whether during or after business 
hours, or whether at the premises of Employer, the

                                      8
<PAGE>

home of Executive or elsewhere) while he is employed by the Employer.  Such 
disclosure shall be made promptly upon such development, enhancement, 
invention, compilation, design, writing or discovery having been made or 
created, and shall be disclosed in writing pursuant to such form as Employer 
may from time to time provide.

     B.        Executive agrees to assign and does hereby irrevocably assign 
to Employer all of his right, title and interest in and to any Confidential 
Information and Proprietary Assets including, but not limited to, that which 
relates to the Business of the Employer that he has devised, developed, 
invented, compiled, enhanced, designed, written or discovered (whether alone 
or with others or whether during or after business hours, or whether at the 
premises of Employer, the home of Executive or elsewhere), or in which he may 
otherwise obtain any rights, while he is or was employed by Employer or which 
he owned at the time of becoming an employee of the Employer.  Executive 
agrees to take any actions, including the execution of documents or 
instruments, that the Employer may reasonably require to effect the 
Executive's assignment of rights pursuant to this Section 7.04, and Executive 
hereby constitutes and appoints, with full power of substitution and 
resubstitution, the President and any Vice President, acting alone, of 
Employer as his attorney-in-fact to execute and deliver on behalf and in the 
stead of Executive any documents or instruments that Executive is obligated 
to execute and deliver pursuant to this Section 7.04.

     C.        Executive shall promptly notify Employer of any patent 
relating to any portion of the Confidential Information and Proprietary 
Assets that is applied for by any person or entity or issued to any person or 
entity (including Executive) ("Patent").  Such notice shall be in writing in 
such form as Employer may from time to time require.  On the written request 
of Employer, Executive shall sell to Employer, and Employer shall purchase 
from Executive, all right, title and interest of Executive in and to any 
Patent, whether or not Executive is employed by Employer at the time the 
Patent issues.  The purchase price for any Patent or Copyright shall be one 
dollar ($1) and shall be paid by Employer at the time it makes the written 
request to purchase the Patent or Copyright. Executive agrees to execute any 
and all documents and instruments necessary to evidence and effect the 
transfer to Employer of all right, title and interest of Executive in and to 
the Patent or Copyright.

     D.        At the request of Employer, Executive shall assist Employer in 
applying for and obtaining both domestic and foreign patents or copyrights, 
as the case may be, on all Confidential Information and Proprietary Assets 
that Employer deems to be patentable or copyrightable that he has previously 
devised, developed, invented, compiled, written, designed or discovered or 
that he may devise, develop, invent, compile, design, write or discover, 
(whether alone or with others or whether during or after business hours, or 
whether at the premises of Employer, the home of Executive or elsewhere), 
while he is or was employed by Employer, and Executive shall execute at any 
time or times any and all documents and perform all acts reasonably requested 
by Employer and that Employer deems to be necessary or desirable in order to 
obtain such patents or copyrights or otherwise to vest in Employer full and 
exclusive title and interest in and to all such Confidential Information and 
Proprietary Assets, to protect the same against infringement by others and 
otherwise to aid Employer in connection with any continuations, renewals or 
reissues of any patents or

                                      9
<PAGE>

copyrights, or in the conduct of any proceedings or litigation in regard 
thereto.  All expenses of procuring any patent or copyrights shall be borne 
by Employer.

     E.        Executive has no inventions and/or other rights or items made 
or conceived by Executive prior to the date hereof that are not in the public 
domain or the property of Employer that in any manner could be deemed to be 
Confidential Information and Proprietary Assets.

                                     BREACH

     7.05.     Executive hereby recognizes and acknowledges that irreparable 
injury or damage shall result to the Business of Employer in the event of a 
breach or threatened breach by Executive of any of the terms or provisions of 
this Article VII, and Executive therefore agrees that Employer shall be 
entitled to an injunction restraining Executive from engaging in any activity 
constituting such breach or threatened breach.  Nothing contained herein 
shall be construed as prohibiting Employer from pursuing any other remedies 
available to Employer at law or in equity for such breach or threatened 
breach, including, but not limited to, the recovery of damages from Executive 
and, if Executive is an employee of the Employer, terminating the employment 
of Executive in accordance with the terms and provisions of this Agreement.   

                                  SURVIVAL

     7.06.     Except as set forth below in this Section 7.06, 
notwithstanding the termination of the employment of Executive or the 
termination of this Agreement, the provisions of this Article VII shall 
survive and be binding upon Executive unless a written agreement that 
specifically refers to the termination of the obligations and covenants of 
this Article VII is executed by Employer. The provisions of Section 7.01 
shall terminate two (2) years after the date of termination unless the 
termination is made pursuant to Section 5.05.  If the termination is made 
pursuant to Section 5.05 the provisions of Section 7.01 shall terminate upon 
expiration of the Severance Period.  The provisions of Section 7.02 shall 
terminate five (5) years after the date of termination (no matter how such 
termination occurs).

                                 ARTICLE VIII
                                 MISCELLANEOUS

                                    NOTICES

     8.01.     Any notices to be given hereunder by either party to the other 
may be effected either by personal delivery in writing or by mail, registered 
or certified, postage prepaid with return receipt requested.  Mailed notices 
shall be addressed to the parties at the following addresses:

                                      10
<PAGE>

     If to  Employer:    IWL Holdings Corp.
                         Two Galleria Tower, Suite 1925
                         13455 Noel Road
                         Dallas, Texas  75240-6638
                         Attn:  Tim Rogers
                         Facsimile No.: (972) 788-4243

     If to Executive:
                         ----------------------------------------

                         ----------------------------------------

                         ----------------------------------------
                         Phone No.:
                                   ------------------------------
                         Fax No.:
                                 --------------------------------

     Any party may change his or its address by written notice in accordance 
with this Section.  Notices delivered personally shall be deemed communicated 
as of actual receipt, mailed notices shall be deemed communicated as of three 
(3) days after proper mailing.

                      INCLUSION OF ENTIRE AGREEMENT HEREIN

     8.02.     This Agreement supersedes any and all other agreements, either 
oral or in writing, between the parties hereto with respect to the employment 
of Executive by Employer and contains all of the covenants and agreements 
between the parties with respect to such employment in any manner whatsoever. 
 Any existing employment agreement between Executive and Employer is hereby 
terminated effective as of the Effective Date and shall be of no further 
force or effect from and after the Effective Date.  

                            LAW GOVERNING AGREEMENT

     8.03.     This Agreement shall be governed by and construed in 
accordance with the laws of the State of Texas, and all obligations shall be 
performable in the State of Texas.

                           ATTORNEY'S FEES AND COSTS

     8.04.     If any action at law or in equity is necessary to enforce or 
interpret the terms of this Agreement, the prevailing party shall be entitled 
to reasonable attorney's fees, costs and necessary disbursements in addition 
to any other relief to which such party may be entitled.

                                      11
<PAGE>

                                    WAIVER

     8.05.     No term or condition of this Agreement shall be deemed to have 
been waived nor shall there be any estoppel to enforce any of the terms or 
provisions of this Agreement except by written instrument of the party 
charged with such waiver or estoppel.  Further, it is agreed that no waiver 
at any time of any of the terms or provisions of this Agreement shall be 
construed as a waiver of any of the other terms or provisions of this 
Agreement and that a waiver at any time of any of the terms or provisions of 
this Agreement shall not be construed as a waiver at any subsequent time of 
the same terms or provisions.

                                  AMENDMENTS

     8.06.     Except as otherwise provided in Section 8.07, no amendment or 
modification of this Agreement shall be deemed effective unless and until 
executed in writing by all of the parties hereto.

                          SEVERABILITY AND LIMITATION

     8.07.     All agreements and covenants contained herein are severable 
and, in the event any of them shall be held to be invalid by any competent 
court, this Agreement shall be interpreted as if such invalid agreements or 
covenants were not contained herein.  Should any court or other legally 
constituted authority determine that for any such agreement or covenant to be 
effective that it must be modified to limit its duration or scope, the 
parties hereto shall consider such agreement or covenant to be amended or 
modified with respect to duration and scope so as to comply with the orders 
of any such court or other legally constituted authority or to be enforceable 
under the laws of the State of Texas, and as to all other portions of such 
agreement or covenants they shall remain in full force and effect as 
originally written.

                                    HEADINGS

     8.08.     All headings set forth in this Agreement are intended for 
convenience only and shall not control or affect the meaning, construction or 
effect of this Agreement or of any of the provisions thereof.

                                   ASSIGNMENT

     8.09.     Executive agrees that his representations, warranties, 
covenants, promises and obligations contained herein may be assigned by 
Employer to any person, partnership, firm, association, corporation or other 
business entity to which Employer may transfer its business and assets or any 
portion thereof.

                                      12
<PAGE>

     EXECUTED as of the day and year first above written.

                                      EMPLOYER:

                                      IWL HOLDINGS CORP.


                                      By:  /s/ Ignatius W. Leonards
                                           ---------------------------------
                                      Its: President
                                           ---------------------------------


                                      EXECUTIVE:

                                      /s/ Tim Rogers
                                      --------------------------------------
                                      Tim Rogers

                                      13


<PAGE>

                                 EMPLOYMENT AGREEMENT


     THIS AGREEMENT (this "Agreement") is made, entered into and executed as of
the 16th day of February, 1998, by and between Tim Terrell (hereinafter
referred to as "Executive"), and IWL Holdings Corp., a Texas corporation
(hereinafter referred to as "Employer").

                                 W I T N E S S E T H:

     WHEREAS, Employer has agreed, subject to certain conditions, to engage in a
business combination (the "Combination") pursuant to which Holdings will acquire
all of the issued and outstanding capital stock of IWL Communications,
Incorporated ("IWL") and CapRock Communications Corp. ("CapRock") and all of the
partnership interests in CapRock Fiber Network, Ltd., a Texas limited
partnership (the "Partnership");

     WHEREAS, one of the conditions to the consummation of the Combination is
the execution of this Agreement by Employer and Executive;

     WHEREAS, Employer desires to employ Executive;

     WHEREAS, Executive desires to accept such employment on the terms and
conditions herein set forth;

     NOW, THEREFORE, for and in consideration of the premises and the mutual
covenants herein contained and other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, Employer and Executive
hereby agree as follows.

                                      ARTICLE I
                                      AGREEMENT

                                      EMPLOYMENT

     1.01.     Subject to the terms and conditions of this Agreement, Employer
agrees to employ Executive and Executive hereby accepts such employment with
Employer.

                                         TERM

     1.02.     The term (the "Base Term") of this Agreement shall commence on
the date hereof (hereinafter referred as the "Effective Date") and shall
continue thereafter through April 30, 2001, unless earlier terminated as
provided herein or unless extended on such terms and conditions and for such
period of time as may be agreed upon in writing by Employer and Executive (the
Base Term, as so extended or earlier terminated, is referred to herein as the
"Term").  

<PAGE>

                                      ARTICLE II
                                 TITLE AND AUTHORITY

                                       GENERAL

     2.01.     Executive agrees to perform the duties of such position or office
which the Board of Directors of Employer (hereinafter referred to as the "Board
of Directors") shall designate for Executive.  Executive shall render such
services as are normally delegated to such position and such other additional
services as may be delegated to him from time to time by the Board of Directors.
Executive further agrees to hold such additional positions of the Employer as
may be assigned to him from time to time by the Board of Directors.  In
performing such duties hereunder, Executive shall give Employer the benefit of
his special knowledge, skills, contacts and business experience and shall devote
all of his business time, attention, ability and energy exclusively to the
business of Employer.  Executive shall office in Dallas, Texas at the Employer's
place of business located in Dallas, Texas.

                                      ARTICLE III
                                     COMPENSATION

                                     BASE SALARY

     3.01.     As compensation for services rendered under this Agreement,
Executive shall be entitled to receive from the Employer an aggregate minimum
base salary of One Hundred Thirty-Three Thousand, Three Hundred and Thirty-
Three Dollars ($133,333) per annum.  The base salary to be paid to Executive
hereunder shall be paid in equal installments in accordance with Employer's
normal payroll practice and shall be less applicable withholding, FICA,
medicare, FUTA, SUTA and other taxes, if any.  Such installments shall be paid
on such days of each week, as determined by Employer from time to time.

                               CHANGES IN COMPENSATION

     3.02.     Nothing in this Agreement shall either prevent or require the
Board of Directors from increasing, in its sole and absolute discretion,
prospectively or retroactively, any compensation or other benefits payable or
provided to Executive.

                                 DISCRETIONARY BONUS

     3.03.     A discretionary bonus in an amount determined by the Board of
Directors may be paid to Executive at the end of each calendar year during the
Term of this Agreement.  No obligation to pay any such bonus is hereby created.

                                          2

<PAGE>
                                      ARTICLE IV
                                       BENEFITS

                                  MEDICAL CARE PLAN

     4.01.     Employer shall provide Executive with coverage under a group
medical care plan and life and dental insurance benefits that are the same or
substantially similar to the coverage and benefits provided from time to time to
other executives of Employer.

                                      VACATION

     4.02.     Executive shall be entitled to paid vacation in accordance with
Employer's written vacation policy, as in effect from time to time during the
Term.

                               EMPLOYEE BENEFIT PLANS

     4.03 Executive shall be entitled to participate in Employer's employee
benefit plans established from time to time for its employees, including without
limitation its management incentive bonus plan.

                                      ARTICLE V
                                     TERMINATION

                                       GENERAL

     5.01.     Employer and Executive shall have the right to terminate the
employment of Executive as set forth in this Article V.

                          INCAPACITY OF EXECUTIVE TO PERFORM

     5.02.     If Executive shall become ill or be injured or otherwise become
incapacitated such that, in the good faith opinion of the Board of Directors, he
cannot carry out and perform fully his duties hereunder, and such incapacity
shall continue for a period of ninety (90) consecutive days, the Board of
Directors may, at any time after the ninety (90)-day period has passed, by
giving Executive written notice of such termination, fully and finally terminate
his employment under this Agreement.  Termination under this Section 5.02 shall
be effective as of the date provided in such notice.  In connection with the
termination of Executive pursuant to this Section 5.02, Employer shall pay to
Executive, in equal installments as set forth in Section 3.01, severance pay for
twelve (12) months or, if less than twelve (12) months remain in the Base Term
of this Agreement, an amount equal to his base salary for that number of the
months immediately preceding the termination that is equal to the number of
months remaining in the Base Term but in any event for not less than six (6)
months; provided, however, that such payments shall be reduced by the aggregate
amount of any payments Executive will be entitled to receive over the period
from the date of the termination of his 

                                         3

<PAGE>

employment hereunder through the end of the Base Term of this Agreement under 
any long term disability insurance policy provided to Executive by Employer.  
Upon such termination, Executive shall receive only such amounts as are 
earned and due to him under this Agreement as the result of his activities 
prior to such termination, and thereafter no further consideration or 
compensation shall be owed by Employer to Executive. The rights of Executive 
described in this paragraph shall be in addition to and not to the exclusion 
of, the other remedies and termination rights set forth in this Agreement.

                                  DEATH OF EXECUTIVE

     5.03.     The employment of Executive shall automatically terminate upon
the death of Executive.  Upon such termination, Executive's estate or, if
applicable, his heirs shall receive only such amounts as are earned and due to
Executive under this Agreement as the result of his activities prior to his
death, and thereafter no further consideration or compensation shall be owed by
Employer to Executive or to his estate.

                                TERMINATION FOR CAUSE

     5.04.     In addition to any other remedies that Employer may have at law
or in equity, the Board of Directors may immediately terminate Executive's
employment under this Agreement by giving Executive written or oral notice of
such termination upon the occurrence of any of the following events:

               A.   Failure of Executive to be present for work and duties as
     set forth herein for ten (10) or more consecutive business days (except 
     during vacation and periods of illness as set forth herein) without giving 
     prior written notice to the Board of Directors and receiving approval of 
     the Board of Directors of such absence, which approval shall not be 
     unreasonably withheld;

               B.   Executive's conviction for a felony offense or 
     commission by Executive of any act abhorrent to the community that the 
     Board of Directors considers materially damaging to or tending to 
     discredit the reputation of Employer or its respective successors and 
     assigns;
     
               C.   Dishonesty, fraud, willful misconduct, unlawful 
     discrimination or theft on the part of Executive (whether within the 
     workplace or elsewhere);
     
               D.   Executive's using for his own benefit or the benefit 
     of any third party any material, non-public information, confidential 
     information or proprietary information of Employer or its respective 
     successors and assigns, or willfully or negligently divulging any such 
     information to third parties without the prior written consent of the 
     Board of Directors, or any violation by Executive of any of its 
     obligations under Article VII hereof;

                                         4

<PAGE>

               E.   Executive's public drunkenness, use of illegal 
     substances or drugs or the use, possession, distribution or being under 
     the influence of alcohol or illegal substances or drugs in the workplace. 
     The only exception is that Executive may consume alcohol reasonably and 
     responsibly, if he or she so chooses, at legitimate business events and 
     functions where alcohol is legally available; and 

               F.   The determination by the Board of Directors that, in the 
     good faith opinion of the Board of Directors, Executive has continually 
     failed or refused to comply, after notice of and a reasonable opportunity 
     to cure such failure or refusal, with the policies, standards, 
     regulations, instructions, or directions of Employer as they currently 
     exist or as they may be modified from time to time.

Upon termination for any of the reasons described above, Executive shall receive
only such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination, and thereafter no further consideration
shall be owed by Employer to Executive.  Employer may deduct from Executive's
paycheck any unauthorized expenses, charges or misappropriations for which
Employer may be responsible as the result of Executive's conduct.

                              TERMINATION WITHOUT CAUSE

     5.05.     The Board of Directors may terminate Executive's employment under
this Agreement without any cause whatsoever by giving Executive thirty (30)
days' written notice or, at the election of the Board of Directors, immediate
notice and the payment of an amount equal to his base salary for the previous
thirty (30) days, at the time set forth therein.  In addition to any amounts
owed to the Executive pursuant to the preceding sentence, if such termination is
made pursuant to this Section 5.05, Employer shall pay to Executive severance
pay in an amount equal to the base salary that would be payable to Executive
over the period commencing on the date of termination and ending at the end of
the Base Term of this Agreement, which period shall in no event be less than six
(6) months (the "Severance Period"), assuming the base salary is the amount of
Executive's base salary at the time of the termination, which severance pay
shall be paid to Executive during the Severance Period in equal installments as
set forth in Section 3.01.  In addition, upon such termination the vesting of
all options that are granted to Executive under any stock option plan of
Employer or any subsidiary thereof (provided such options are granted on or
after the date on which the Combination with IWL, CapRock and the Partnership is
consummated) will automatically accelerate, with the result that such options
will be fully vested upon the date of termination.  Upon such termination,
Executive shall receive only such amounts as are owed to him under this
Agreement as the result of his activities prior to such termination and as
expressly set forth in this Section 5.05 and thereafter no further consideration
shall be owed by the Employer to Executive.

                                         5

<PAGE>
                               TERMINATION BY EXECUTIVE

     5.06.     Executive may, with or without cause, terminate his employment
under this Agreement by giving Employer at least thirty (30) days' prior written
notice of such termination.  Upon such termination, Executive shall receive only
such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination and thereafter no further consideration
shall be owed by Employer to Executive.

                                      ARTICLE VI
                                EXPENSE REIMBURSEMENT

     Executive is authorized to incur reasonable business expenses in connection
with the business of Employer, including expenditures for entertainment and
travel.  Subject to the requirements of this Article VI, Employer will reimburse
Executive from time to time for all business expenses that are determined to be
reasonable by the Board of Directors or any officer of Employer designated by
the Board of Directors to review and approve those expenses.  All reimbursements
are contingent upon Executive providing to the Board of Directors a receipt for
each expenditure and an account book or expense record in which Executive
recorded at or near the time each expenditure was made: the amount of the
expenditure; the time, place and designation of the type of entertainment and
travel or other expense; the business or other reason for the expenditure; and
the names, occupations and addresses of each person who was entertained.

                                    ARTICLE VII
               COVENANT NOT TO COMPETE, TRADE SECRETS, AND ASSIGNMENTS

                               COVENANT NOT TO COMPETE

     7.01.     Executive understands that this Agreement is being entered into
in connection with the Combination and acknowledges that as a result of the
Combination Executive will receive a substantial number of shares of the common
stock of Employer.  Executive also acknowledges that IWL, CapRock and the
Partnership would not be prepared to engage in the Combination unless Executive
agreed to the covenants contained in this Article VII.  Executive is entering
into this Agreement and making the covenants contained in this Article VII,
among other things, to induce Employer, IWL, CapRock and the Partnership to
engage in the Combination.  Executive recognizes and acknowledges that Employer
is placing its confidence and trust in the Executive.  Executive will have
access to information which enables Employer to be successful in its business. 
Some of the information may be confidential and constitute trade secrets;
however, that information when combined with all other information regarding
Employer constitutes proprietary information and methods that could seriously
affect the ability of Employer to do business if Executive were allowed to use
it other than for Employer.  Executive, therefore, covenants and agrees that for
a period beginning on the Effective Date and ending two (2) years after the date
of termination (except as set forth in Section 7.06 below) of Executive's
employment with Employer, Executive shall not continue or commence to:

                                         6

<PAGE>

               A.   Either directly or indirectly engage in or carry on 
     any business or in any way become associated with any business that is in 
     direct or indirect competition with the Business of the Employer (as such 
     term is used and defined herein).  As used in this Article VII, the term 
     "Business of the Employer" shall include all business activities in which 
     the Employer is engaged on the Effective Date or in which the Employer is 
     engaged on the date of Executive's termination or at any time between 
     such dates, including, but not limited to, the provision of local or long 
     distance telecommunications services;

               B.   Attempt in any manner to solicit from any person or 
     entity that is or was a client of Employer at any time prior to the date 
     of termination of Executive's termination, business of the type performed 
     or formerly performed by Employer for such client or to persuade any 
     client or Employer to cease to do business or to reduce the amount of 
     business which any such client has customarily done with Employer or 
     contemplates doing with Employer; or provide to or for any client any 
     services or products of the type provided by Employer or formerly 
     provided by Employer (as used herein the noun "client" shall mean anyone 
     who is a client or customer, supplier, sales representative or other 
     person who does business with Employer: (i) as of the date hereof or the 
     date of Executive's termination or at the time of the alleged conduct or 
     at any time in between such times; (ii) at any time during the twelve 
     (12) month period immediately preceding the time of alleged prohibited 
     conduct; and (iii) any prospective persons to whom Employer had made a 
     formal presentation (or similar offering of services) within a period of 
     twelve (12) months immediately preceding the alleged prohibited conduct);

               C.   Either directly or indirectly be or become an 
     employee, agent, consultant or representative of or become a director or 
     officer of or be otherwise in any manner associated with any person, 
     firm, corporation, association or other entity that is engaged in or 
     currently intends to become engaged in or is carrying on any business 
     that is in direct or indirect competition with the Business of Employer;

               D.   Either directly or indirectly solicit for employment 
     or employ any person employed by Employer at any time during the 
     twenty-four month (24-month) period immediately preceding such 
     solicitation or employment; and

               E.   Either directly or indirectly be or become a 
     shareholder, joint venturer in or owner (in whole or in part) of or be a 
     partner of or associated with or have any proprietary or financial 
     interest in any firm, corporation, joint venture, partnership or 
     association or other entity that is engaged in or is carrying on any 
     business that is in direct or indirect competition with the Business of 
     Employer.

     Executive hereby recognizes and acknowledges that the existing business
area of Employer extends throughout the United States and therefore agrees that
the covenants not to compete contained in this Section 7.01 shall be applicable
in and throughout such area.  Executive further warrants and represents that,
because of his varied skill and abilities, he does not need to compete with the
Business 

                                         7

<PAGE>

of Employer in the area described above, in order to make a living. Nothing 
in this Section will prevent Executive from owning less than five percent 
(5%) of the stock of any publicly traded corporation after the termination of 
his employment as long as Executive is not a participant in the management or 
affairs of the corporation in a manner that would otherwise violate any 
prohibition contained in this Section.  Executive further acknowledges that 
all references in this Section 7.1 and in Sections 7.02, 7.03 and 7.04 to 
"Employer" shall include all existing and future subsidiaries of Employer and 
any successor thereof, including without limitation IWL, CapRock and the 
Partnership upon consummation of the Combination, and the covenant not to 
compete granted in this Section 7.1 shall extend to all such entities.

                                    TRADE SECRETS

     7.02.     Executive recognizes and acknowledges that information in
whatever form it may exist pertaining to the financial condition of Employer,
its products, processes, properties, assets, inventions, proprietary rights,
customers, specifically targeted potential customers, markets, technology, know-
how, trade secrets, prospects, proposals, concepts and all other aspects of the
Business of Employer (collectively "Confidential Information") is valuable,
special and unique.  Accordingly, Executive agrees that he will not during the
Term of his employment with Employer or for five (5) years thereafter, disclose
any such Confidential Information to any person, firm, corporation, association,
or other entity for any reason or purpose whatsoever or make use in any other
way to his personal advantage or to the advantage of any third parties, of any
Confidential Information available to him.

                                       RECORDS

     7.03.     All files of customers and of Employer and all records of the
accounts of customers, and any other records, memoranda, etc., relating in any
manner whatsoever to the customers, Employer's product, the Business of
Employer, the Confidential Information, suppliers or prospective customers or
prospective suppliers of Employer, whether prepared by Executive or otherwise
coming into his possession, shall be the exclusive property of Employer.  All
such files and records shall be immediately placed in the physical possession of
Employer on the termination of Executive's employment with Employer or at any
other time specified by the Board of Directors.  Executive agrees not to retain
or use duplicates in any form of such files and records by Executive is
prohibited after the termination of Executive's employment with Employer and
acknowledges that such use is prohibited.

     7.04.     DISCLOSURE AND ASSIGNMENT OF RIGHTS.

     A.   Executive shall disclose in writing to Employer full and complete
details respecting any Confidential Information, inventions, enhancements,
technology or other proprietary assets whether tangible or intangible
(collectively "Confidential Information and Proprietary Assets") that Executive
may devise, develop, invent, compile, enhance, design, write or discover
(whether alone or with others or whether during or after business hours, or
whether at the premises of Employer, the 

                                         8

<PAGE>

home of Executive or elsewhere) while he is employed by the Employer.  Such 
disclosure shall be made promptly upon such development, enhancement, 
invention, compilation, design, writing or discovery having been made or 
created, and shall be disclosed in writing pursuant to such form as Employer 
may from time to time provide.

     B.   Executive agrees to assign and does hereby irrevocably assign to
Employer all of his right, title and interest in and to any Confidential
Information and Proprietary Assets including, but not limited to, that which
relates to the Business of the Employer that he has devised, developed,
invented, compiled, enhanced, designed, written or discovered (whether alone or
with others or whether during or after business hours, or whether at the
premises of Employer, the home of Executive or elsewhere), or in which he may
otherwise obtain any rights, while he is or was employed by Employer or which he
owned at the time of becoming an employee of the Employer.  Executive agrees to
take any actions, including the execution of documents or instruments, that the
Employer may reasonably require to effect the Executive's assignment of rights
pursuant to this Section 7.04, and Executive  hereby constitutes and appoints,
with full power of substitution and resubstitution, the President and any Vice
President, acting alone, of Employer as his attorney-in-fact to execute and
deliver on behalf and in the stead of Executive any documents or instruments
that Executive is obligated to execute and deliver pursuant to this Section
7.04.

     C.   Executive shall promptly notify Employer of any patent relating to any
portion of the Confidential Information and Proprietary Assets that is applied
for by any person or entity or issued to any person or entity (including
Executive) ("Patent").  Such notice shall be in writing in such form as Employer
may from time to time require.  On the written request of Employer, Executive
shall sell to Employer, and Employer shall purchase from Executive, all right,
title and interest of Executive in and to any Patent, whether or not Executive
is employed by Employer at the time the Patent issues.  The purchase price for
any Patent or Copyright shall be one dollar ($1) and shall be paid by Employer
at the time it makes the written request to purchase the Patent or Copyright. 
Executive agrees to execute any and all documents and instruments necessary to
evidence and effect the transfer to Employer of all right, title and interest of
Executive in and to the Patent or Copyright.

     D.   At the request of Employer, Executive shall assist Employer in
applying for and obtaining both domestic and foreign patents or copyrights, as
the case may be, on all Confidential Information and Proprietary Assets that
Employer deems to be patentable or copyrightable that he has previously devised,
developed, invented, compiled, written, designed or discovered or that he may
devise, develop, invent, compile, design, write or discover, (whether alone or
with others or whether during or after business hours, or whether at the
premises of Employer, the home of Executive or elsewhere), while he is or was
employed by Employer, and Executive shall execute at any time or times any and
all documents and perform all acts reasonably requested by Employer and that
Employer deems to be necessary or desirable in order to obtain such patents or
copyrights or otherwise to vest in Employer full and exclusive title and
interest in and to all such Confidential Information and Proprietary Assets, to
protect the same against infringement by others and otherwise to aid Employer in
connection with any continuations, renewals or reissues of any patents or

                                         9

<PAGE>

copyrights, or in the conduct of any proceedings or litigation in regard
thereto.  All expenses of procuring any patent or copyrights shall be borne by
Employer.

     E.   Executive has no inventions and/or other rights or items made or
conceived by Executive prior to the date hereof that are not in the public
domain or the property of Employer that in any manner could be deemed to be
Confidential Information and Proprietary Assets.

                                        BREACH

     7.05.     Executive hereby recognizes and acknowledges that irreparable
injury or damage shall result to the Business of Employer in the event of a
breach or threatened breach by Executive of any of the terms or provisions of
this Article VII, and Executive therefore agrees that Employer shall be entitled
to an injunction restraining Executive from engaging in any activity
constituting such breach or threatened breach.  Nothing contained herein shall
be construed as prohibiting Employer from pursuing any other remedies available
to Employer at law or in equity for such breach or threatened breach, including,
but not limited to, the recovery of damages from Executive and, if Executive is
an employee of the Employer, terminating the employment of Executive in
accordance with the terms and provisions of this Agreement.

                                       SURVIVAL

     7.06.     Except as set forth below in this Section 7.06, notwithstanding
the termination of the employment of Executive or the termination of this
Agreement, the provisions of this Article VII shall survive and be binding upon
Executive unless a written agreement that specifically refers to the termination
of the obligations and covenants of this Article VII is executed by Employer.
The provisions of Section 7.01 shall terminate two (2) years after the date of
termination unless the termination is made pursuant to Section 5.05.  If the
termination is made pursuant to Section 5.05 the provisions of Section 7.01
shall terminate upon expiration of the Severance Period.  The provisions of
Section 7.02 shall terminate five (5) years after the date of termination (no
matter how such termination occurs).

                                    ARTICLE VIII
                                    MISCELLANEOUS

                                      NOTICES

     8.01.     Any notices to be given hereunder by either party to the other
may be effected either by personal delivery in writing or by mail, registered or
certified, postage prepaid with return receipt requested.  Mailed notices shall
be addressed to the parties at the following addresses:

                                        10

<PAGE>

     If to  Employer:    IWL Holdings Corp.
                         Two Galleria Tower, Suite 1925
                         13455 Noel Road
                         Dallas, Texas  75240-6638
                         Attn:  Tim Terrell
                         Facsimile No.: (972) 788-4243

     If to Executive:                                  
                         -------------------------------

                         -------------------------------

                         -------------------------------
                         Phone No.:                     
                                   ---------------------
                         Fax No.:
                                 -----------------------

     Any party may change his or its address by written notice in accordance
with this Section.  Notices delivered personally shall be deemed communicated as
of actual receipt, mailed notices shall be deemed communicated as of three (3)
days after proper mailing.

                         INCLUSION OF ENTIRE AGREEMENT HEREIN

     8.02.     This Agreement supersedes any and all other agreements, either
oral or in writing, between the parties hereto with respect to the employment of
Executive by Employer and contains all of the covenants and agreements between
the parties with respect to such employment in any manner whatsoever.  Any
existing employment agreement between Executive and Employer is hereby
terminated effective as of the Effective Date and shall be of no further force
or effect from and after the Effective Date.  

                               LAW GOVERNING AGREEMENT

     8.03.     This Agreement shall be governed by and construed in accordance
with the laws of the State of Texas, and all obligations shall be performable in
the State of Texas.

                              ATTORNEY'S FEES AND COSTS

     8.04.     If any action at law or in equity is necessary to enforce or
interpret the terms of this Agreement, the prevailing party shall be entitled to
reasonable attorney's fees, costs and necessary disbursements in addition to any
other relief to which such party may be entitled.

                                        11

<PAGE>

                                        WAIVER

     8.05.     No term or condition of this Agreement shall be deemed to have
been waived nor shall there be any estoppel to enforce any of the terms or
provisions of this Agreement except by written instrument of the party charged
with such waiver or estoppel.  Further, it is agreed that no waiver at any time
of any of the terms or provisions of this Agreement shall be construed as a
waiver of any of the other terms or provisions of this Agreement and that a
waiver at any time of any of the terms or provisions of this Agreement shall not
be construed as a waiver at any subsequent time of the same terms or provisions.

                                      AMENDMENTS

     8.06.     Except as otherwise provided in Section 8.07, no amendment or
modification of this Agreement shall be deemed effective unless and until
executed in writing by all of the parties hereto.

                             SEVERABILITY AND LIMITATION

     8.07.     All agreements and covenants contained herein are severable and,
in the event any of them shall be held to be invalid by any competent court,
this Agreement shall be interpreted as if such invalid agreements or covenants
were not contained herein.  Should any court or other legally constituted
authority determine that for any such agreement or covenant to be effective that
it must be modified to limit its duration or scope, the parties hereto shall
consider such agreement or covenant to be amended or modified with respect to
duration and scope so as to comply with the orders of any such court or other
legally constituted authority or to be enforceable under the laws of the State
of Texas, and as to all other portions of such agreement or covenants they shall
remain in full force and effect as originally written.

                                       HEADINGS

     8.08.     All headings set forth in this Agreement are intended for
convenience only and shall not control or affect the meaning, construction or
effect of this Agreement or of any of the provisions thereof.

                                      ASSIGNMENT

     8.09.     Executive agrees that his representations, warranties, covenants,
promises and obligations contained herein may be assigned by Employer to any
person, partnership, firm, association, corporation or other business entity to
which Employer may transfer its business and assets or any portion thereof. 

                                        12

<PAGE>

     EXECUTED as of the day and year first above written.


                                   EMPLOYER:

                                   IWL HOLDINGS CORP.


                                   By:  /s/ Ignatius W. Leonards
                                      --------------------------------------
                                   Its: President
                                       -------------------------------------

                                   EXECUTIVE:

                                   /s/ Tim Terrell
                                   -----------------------------------------
                                   Tim Terrell



                                        13

<PAGE>

                                 EMPLOYMENT AGREEMENT

     THIS AGREEMENT (this "Agreement") is made, effective as of the 11th day of
May, 1998, by and between Kevin W. McAleer (hereinafter referred to as
"Executive"), and IWL Holdings Corp., a Texas corporation (hereinafter referred
to as "Employer").


                                     WITNESSETH:

     WHEREAS, Employer has agreed, subject to certain conditions, to engage in a
business combination (the "Combination") pursuant to which Holdings will acquire
all of the issued and outstanding capital stock of IWL Communications,
Incorporated ("IWL") and CapRock Communications Corp. ("CapRock") and all of the
partnership interests in CapRock Fiber Network, Ltd., a Texas limited
partnership (the "Partnership");

     WHEREAS, Employer desires to employ Executive;

     WHEREAS, Executive desires to accept such employment on the terms and
conditions herein set forth;

     NOW, THEREFORE, for and in consideration of the premises and the mutual
covenants herein contained and other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, Employer and Executive
hereby agree as follows.

                                      ARTICLE I
                                      AGREEMENT

                                      EMPLOYMENT

     1.01. Subject to the terms and conditions of this Agreement, Employer
agrees to employ Executive and Executive hereby accepts such employment with
Employer.

                                         TERM

     1.02. The term (the "Base Term") of this Agreement shall commence on the
date hereof (hereinafter referred as the "Effective Date") and shall continue
thereafter through May 10, 1999, unless earlier terminated as provided herein or
unless extended on such terms and conditions and for such period of time as may
be agreed upon in writing by Employer and Executive (the Base Term, as so
extended or earlier terminated, is referred to herein as the "Term").


                                       1

<PAGE>

                                      ARTICLE II

                                 TITLE AND AUTHORITY

                                       GENERAL

     2.01. Executive agrees to perform the duties of such position or office
which the Board of Directors of Employer (hereinafter referred to as the "Board
of Directors") shall designate for Executive. Executive shall render such
services as are normally delegated to such position and such other additional
services as may be delegated to him from time to time by the Board of Directors.
Executive further agrees to hold such additional positions of the Employer as
may be assigned to him from time to time by the Board of Directors. In
performing such duties hereunder, Executive shall give Employer the benefit of
his special knowledge, skills, contacts and business experience and shall devote
all of his business time, attention, ability and energy exclusively to the
business of Employer. Executive shall office in Dallas, Texas at the Employer's
place of business located in Dallas, Texas.

     2.02 Executive initial title shall be Senior Vice-President and Chief 
Financial Officer.


                                     ARTICLE III
                                     COMPENSATION

                                     BASE SALARY

     3.01. As compensation for services rendered under this Agreement, Executive
shall be entitled to receive from the Employer an aggregate minimum base salary
of Two Hundred Thousand Dollars ($200,000) per annum. The base salary to be paid
to Executive hereunder shall be paid in equal installments in accordance with
Employer's normal payroll practice and shall be less applicable withholding,
FICA, medicare, FUTA, SUTA and other taxes, if any. Such installments shall be
paid on such days of each week, as determined by Employer from time to time.

                               CHANGES IN COMPENSATION

     3.02. Nothing in this Agreement shall either prevent or require the Board
of Directors from increasing, in its sole and absolute discretion, prospectively
or retroactively, any compensation or other benefits payable or provided to
Executive.

                                 DISCRETIONARY BONUS

     3.03.a Discretionary bonus in an amount determined by the Board of
Directors may be paid to Executive at the end of each calendar year during the
Term of this Agreement. No obligation to pay any such bonus is hereby created.


                                       2

<PAGE>

     3.03b The Board of Directors will, in consultation with outside
compensation consultants, create or modify Employer's Incentive Bonus Program
for senior executives. Executive will be entitled to participate in any such
designated program as approved by the Board of Directors.

                        PARTICIPATION IN STOCK OPTION PROGRAM

     4.01 The Board of Directors of Employer, with the assistance of outside
consultants, will create or modify an Incentive Stock Option Program for the
employees of Employer. Executive will be entitled to participate in such
Incentive Stock Option Program as a senior executive of Employer in a manner
approved by the Board of Directors.

                                      ARTICLE IV
                                       BENEFITS

                                  MEDICAL CARE PLAN

     4.01. Employer shall provide Executive with coverage under a group 
medical care plan and life and dental insurance benefits that are the same or 
substantially similar to the coverage and benefit s provided from time to 
time to other executives of Employer.

                                       VACATION

     4.02. Executive shall be entitled to paid vacation in accordance with
Employer's written vacation policy, as in effect from time to time during the
Term.

                                EMPLOYEE BENEFIT PLANS

     4.03 Executive shall be entitled to participate in Employer's employee
benefit plans established from time to time for its employees, including without
limitation its management incentive bonus plan.

                                      ARTICLE V
                                     TERMINATION

                                       GENERAL

     5.01. Employer and Executive shall have the right to terminate the
employment of Executive as set forth in this Article V.

                          INCAPACITY OF EXECUTIVE TO PERFORM

     5.02. If Executive shall become ill or be injured or otherwise become
incapacitated such that, in the good faith opinion of the Board of Directors, he
cannot carry out and perform 


                                       3

<PAGE>

fully his duties hereunder, and such incapacity shall continue for a period 
of ninety (90) consecutive days, the Board of Directors may, at any time 
after the ninety (90) day period has passed, by giving Executive written 
notice of such termination, fully and finally terminate his employment under 
this Agreement. Termination under this Section 5.02 shall be effective as of 
the date provided in such notice. In connection with the termination of 
Executive pursuant to this Section 5.02, Employer shall pay to Executive, in 
equal installments as set forth in Section 3.01, severance pay for twelve 
(12) months; provided, however, that such payments shall be reduced by the 
aggregate amount of any payments Executive will be entitled to receive over 
the period from the date of the termination of his employment hereunder 
through the end of the Base Term of this Agreement under any long term 
disability insurance policy provided to Executive by Employer. Upon such 
termination, Executive shall receive only such amounts as are earned and due 
to him under this Agreement as the result of his activities prior to such 
termination, and thereafter no further consideration or compensation shall be 
owed by Employer to Executive. The rights of Executive described in this 
paragraph shall be in addition to and not to the exclusion of, the other 
remedies and termination rights set forth in this Agreement.

                                  DEATH OF EXECUTIVE

     5.03. The employment of Executive shall automatically terminate upon the
death of Executive. Upon such termination, Executive's estate or, if applicable,
his heirs shall receive only such amounts as are earned and due to Executive
under this Agreement as the result of his activities prior to his death, and
thereafter no further consideration or compensation shall be owed by Employer to
Executive or to his estate.

                                TERMINATION FOR CAUSE

     5.04. In addition to any other remedies that Employer may have at law or in
equity, the Board of Directors may immediately terminate Executive's employment
under this Agreement by giving Executive written or oral notice of such
termination upon the occurrence of any of the following events:

     A. Failure of Executive to be present for work and duties as set forth
herein for ten (10) or more consecutive business days (except during vacation
and periods of illness as set forth herein) without giving prior written notice
to the Board of Directors and receiving approval of the Board of Directors of
such absence, which approval shall not be unreasonably withheld;

     B. Executive's conviction for a felony offense or commission by Executive
of any act abhorrent to the community that the Board of Directors considers
materially damaging to or tending to discredit the reputation of Employer or its
respective successors and assigns;

     C. Dishonesty, fraud, willful misconduct, unlawful discrimination or theft
on the part of Executive (whether within the workplace or elsewhere);


                                       4

<PAGE>

     D. Executive's using for his own benefit or the benefit of any third party
any material, nonpublic information, confidential information or proprietary
information of Employer or its respective successors and assigns, or willfully
or negligently divulging any such information to third parties without the prior
written consent of the Board of Directors, or any violation by Executive of any
of its obligations under Article VII hereof;

     E. Executive's public drunkenness, use of illegal substances or drugs or
the use, possession, distribution or being under the influence of alcohol or
illegal substances or drugs in the workplace. The only exception is that
Executive may consume alcohol reasonably and responsibly, if he or she so
chooses, at legitimate business events and functions where alcohol is legally
available; and

     F. The determination by the Board of Directors that, in the good faith
opinion of the Board of Directors, Executive has continually failed or refused
to comply, after notice of and a reasonable opportunity to cure such failure or
refusal, with the policies, standards, regulations, instructions, or directions
of Employer as they currently exist or as they may be modified from time to
time.

Upon termination for any of the reasons described above, Executive shall receive
only such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination, and thereafter no further consideration
shall be owed by Employer to Executive. Employer may deduct from Executive's
paycheck any unauthorized expenses, charges or misappropriations for which
Employer may be responsible as the result of Executive's conduct.

                              TERMINATION WITHOUT CAUSE

     5.05. The Board of Directors may terminate Executive's employment under
this Agreement without any cause whatsoever by giving Executive thirty (30)
days' written notice or, at the election of the Board of Directors, immediate
notice and the payment of an amount equal to his base salary for the previous
thirty (30) days, at the time set forth therein. In addition to any amounts owed
to the Executive pursuant to the preceding sentence, if such termination is made
pursuant to this Section 5.05, Employer shall pay to Executive severance pay in
an amount equal to the base salary that would be payable to Executive over the
period commencing on the date of termination and ending 12 months after the date
of such termination (the "Severance Period"), in addition, upon such termination
the vesting of all options that are granted to Executive under any stock option
plan of Employer or any subsidiary thereof will automatically accelerate, with
the result that such options will be fully vested upon the date of termination.
Upon such termination, Executive shall receive only such amounts as are owed to
him under this Agreement as the result of his activities prior to such
termination and as expressly set forth in this Section 5.05 and thereafter no
further consideration shall be owed by the Employer to Executive.


                                       5

<PAGE>

                               TERMINATION BY EXECUTIVE

     5.06. Executive may, with or without cause, terminate his employment under
this Agreement by giving Employer at least thirty (30) days' prior written
notice of such termination. Upon such termination, Executive shall receive only
such amounts as are owed to him under this Agreement as the result of his
activities prior to such termination and thereafter no further consideration
shall be owed by Employer to Executive.

                                      ARTICLE VI

                                EXPENSE REIMBURSEMENT

     Executive is authorized to incur reasonable business expenses in connection
with the business of Employer, including expenditures for entertainment and
travel. Subject to the requirements of this Article VI, Employer will reimburse
Executive from time to time for all business expenses that are determined to be
reasonable by the Board of Directors or any officer of Employer designated by
the Board of Directors to review and approve those expenses. All reimbursements
are contingent upon Executive providing to the Board of Directors a receipt for
each expenditure and an account book or expense record in which Executive
recorded at or near the time each expenditure was made: the amount of the
expenditure; the time, place and designation of the type of entertainment and
travel or other expense; the business or other reason for the expenditure; and
the names, occupations and addresses of each person who was entertained.

                                     ARTICLE VII
               COVENANT NOT TO COMPETE TRADE SECRETS, AND ASSIGNMENTS

                               COVENANT NOT TO COMPETE

     7.01. Executive recognizes and acknowledges that employer is placing its
confidence and trust in the Executive. Executive will have access to information
which enables Employer to be successful in its business. Some of the information
may be confidential and constitute trade secrets; however, that information when
combined with all other information regarding Employer constitutes proprietary
information and methods that could seriously affect the ability of Employer to
do business if Executive were allowed to use it other than for Employer.
Executive, therefore, covenants and agrees that for a period beginning on the
Effective Date and ending one (1) year after the date of termination (except as
set forth in Section 7.06 below) of Executive's employment with Employer,
Executive shall not continue or commence to:


                                       6

<PAGE>

     A. Either directly or indirectly engage in or carry on any business or in
any way become associated with any business that is in direct or indirect
competition with the Business of the Employer (as such term is used and 
defined herein). As used in this Article VII, the term "Business of the 
Employer" shall include all business activities in which the Employer is 
engaged on the Effective Date or in which the Employer is engaged on the date 
of Executive's termination or at any time between such dates, including, but 
not limited to, the provision of local or long distance telecommunications 
services;

     B. Attempt in any manner to solicit from any person or entity that is or
was a client of Employer at any time prior to the date of termination of
Executive's termination, business of the type performed or formerly performed by
Employer for such client or to persuade any client or Employer to cease to do
business or to reduce the amount of business which any such client has
customarily done with Employer or contemplates doing with Employer; or provide
to or for any client any services or products of the type provided by Employer
or formerly provided by Employer (as used herein the noun "client" shall mean
anyone who is a client or customer, supplier, sales representative or other
person who does business with Employer: (i) as of the date hereof or the date of
Executive's termination or at the time of the alleged conduct or at any time in
between such times; (ii) at any time during the twelve (12) month period
immediately preceding the time of alleged prohibited conduct; and (iii) any
prospective persons to whom Employer had made a formal presentation (or similar
offering of services) within a period of twelve (12) months immediately
preceding the alleged prohibited conduct);

     C. Either directly or indirectly be or become an employee, agent,
consultant or representative of or become a director or officer of or be
otherwise in any manner associated with any person, firm, corporation,
association or other entity that is engaged in or currently intends to become
engaged in or is carrying on any business that is in direct or indirect
competition with the Business of Employer;

     D. Either directly or indirectly solicit for employment or employ any
person employed by Employer at any time during the twelve month (12-month)
period immediately preceding such solicitation or employment; and

     E. Either directly or indirectly be or become a shareholder, joint venturer
in or owner (in whole or in part) of or be a partner of or associated with or
have any proprietary or financial interest in any firm, corporation, joint
venture, partnership or association or other entity that is engaged in or is
carrying on any business that is in direct or indirect competition with the
Business of Employer. Executive hereby recognizes and acknowledges that the
existing business area of Employer extends throughout the United States and
therefore agrees that the covenants not to compete contained in this Section
7.01 shall be applicable in and throughout such area. Executive further warrants
and represents that, because of his varied skill and abilities, he does not need
to compete with the Business of Employer in the area described above, in order
to make a living. Nothing in this Section will prevent Executive from owning
less than five percent (5%) of the stock of any publicly traded corporation
after the termination of his employment as long as 


                                       7

<PAGE>

Executive is not a participant in the management or affairs of the corporation
in a manner that would otherwise violate any prohibition contained in this 
Section. Executive further acknowledges that all references in this Section 7.1
and in Sections 7.02, 7.03 and 7.04 to "Employer" shall include all existing and
future subsidiaries of Employer and any successor thereof, including without 
limitation IWL, CapRock and the Partnership upon consummation of the 
Combination, and the covenant not to compete granted in this Section 7.1 shall
extend to all such entities.

                                    TRADE SECRETS

     7.02. Executive recognizes and acknowledges that information in whatever
form it may exist pertaining to the financial condition of Employer, its
products, processes, properties, assets, inventions, proprietary rights,
customers, specifically targeted potential customers, markets, technology, 
know-how, trade secrets, prospects, proposals, concepts and all other aspects 
of the Business of Employer (collectively "Confidential Information") is 
valuable, special and unique. Accordingly, Executive agrees that he will not 
during the Term of his employment with Employer or for one (1) year thereafter,
disclose any such Confidential Information to any person, firm, corporation, 
association, or other entity for any reason or purpose whatsoever or make use 
in any other way to his personal advantage or to the advantage of any third 
parties, of any Confidential Information available to him.

                                       RECORDS

     7.03. All files of customers and of Employer and all records of the
accounts of customers, and any other records, memoranda, etc., relating in any
manner whatsoever to the customers, Employer's product, the Business of
Employer, the Confidential Information, suppliers or prospective customers or
prospective suppliers of Employer, whether prepared by Executive or otherwise
coming into his possession, shall be the exclusive property of Employer. All
such files and records shall be immediately placed in the physical possession of
Employer on the termination of Executive's employment with Employer or at any
other time specified by the Board of Directors. Executive agrees not to retain
or use duplicates in any form of such files and records by Executive is
prohibited after the termination of Executive's employment with Employer and
acknowledges that such use is prohibited.

                                        BREACH

     7.05. Executive hereby recognizes and acknowledges that irreparable injury
or damage shall result to the Business of Employer in the event of a breach or
threatened breach by Executive of any of the terms or provisions of this Article
VII, and Executive therefore agrees that Employer shall be entitled to an
injunction restraining Executive from engaging in any activity constituting such
breach or threatened breach. Nothing contained herein shall be construed as
prohibiting Employer from pursuing any other remedies available to Employer at
law or in equity for such breach or threatened breach, including, but not
limited to, the recovery of damages from Executive and, if Executive is an
employee of the Employer, terminating the employment of Executive in 


                                       8

<PAGE>

accordance with the terms and provisions of this Agreement.

                                       SURVIVAL

     7.06.a Except as set forth below in this Section 7.06, notwithstanding the
termination of the employment of Executive or the termination of this Agreement,
the provisions of this Article VII shall survive and be binding upon Executive
unless a written agreement that specifically refers to the termination of the
obligations and covenants of this Article VII is executed by Employer. The
provisions of Section 7.01 shall terminate two years after the date of
termination unless the termination is made pursuant to Section 5.05. If the
termination is made pursuant to Section 5.05 the provisions of Section 7.01
shall terminate upon expiration of the Severance Period. The provisions of
Section 7.02 shall terminate one (1) year after the date of termination (no
matter how such termination occurs).

     7.06.b In the event Employer ceases to exist as a result of the failure of
Employer and CapRock to consummate their combination, this Agreement will
continue as an agreement between CapRock as Employer and Employee.

                                     ARTICLE VIII
                                    MISCELLANEOUS

                                       NOTICES

     8.01. Any notices to be given hereunder by either party to the other may be
effected either by personal delivery in writing or by mail, registered or
certified, postage prepaid with return receipt requested. Mailed notices shall
be addressed to the parties at the following addresses:

     If to Employer:     IWL Holdings Corp.
                         Two Galleria Tower, Suite 1925
                         13455 Noel Road
                         Dallas, Texas 75240-6638
                         Attn: Jere W. Thompson, Jr.
                         Facsimile No.: (972) 788-4243


     If to Executive:    Kevin W. McAleer
                         17516 Oak Mount Place
                         Dallas, Texas 75287
                         Phone No. :(972) 732-8856
                         Fax No.:(972) 732-1047

     Any party may change his or its address by written notice in accordance
with this Section. Notices delivered personally shall be deemed communicated as
of actual receipt, mailed notices 


                                       9

<PAGE>

shall be deemed communicated as of three (3) days after proper mailing.

                         INCLUSION OF ENTIRE AGREEMENT HEREIN

     8.02. This Agreement supersedes any and all other agreements, either oral
or in writing, between the parties hereto with respect to the employment of
Executive by Employer and contains all of the covenants and agreements between
the parties with respect to such employment in any manner whatsoever. Any
existing employment agreement between Executive and Employer is hereby
terminated effective as of the Effective Date and shall be of no further force
or effect from and after the Effective Date.

                               LAW GOVERNING AGREEMENT

     8.03. This Agreement shall be governed by and construed in accordance with
the laws of the State of Texas, and all obligations shall be performable in the
State of Texas.

                              ATTORNEY'S FEES AND COSTS

     8.04. If any action at law or in equity is necessary to enforce or
interpret the terms of this Agreement, the prevailing party shall be entitled to
reasonable attorney's fees, costs and necessary disbursements in addition to any
other relief to which such party may be entitled.

                                        WAIVER

     8.05. No term or condition of this Agreement shall be deemed to have been
waived nor shall there be any estoppel to enforce any of the terms or provisions
of this Agreement except by written instrument of the party charged with such
waiver or estoppel. Further, it is agreed that no waiver at any time of any of
the terms or provisions of this Agreement shall be construed as a waiver of any
of the other terms or provisions of this Agreement and that a waiver at any time
of any of the terms or provisions of this Agreement shall not be construed as a
waiver at any subsequent time of the same terms or provisions.

                                      AMENDMENTS

     8.06. Except as otherwise provided in Section 8.07, no amendment or
modification of this Agreement shall be deemed effective unless and until
executed in writing by all of the parties hereto.

                             SEVERABILITY AND LIMITATION

     8.07. All agreements and covenants contained herein are severable and, in
the event any of therein shall be held to be invalid by any competent court,
this Agreement shall be interpreted as if such invalid agreements or covenants
were not contained herein. Should any court or other legally 


                                      10

<PAGE>

constituted authority determine that for any such agreement or covenant to be 
effective that it must be modified to limit its duration or scope, the 
parties hereto shall consider such agreement or covenant to be amended or 
modified with respect to duration and scope so as to comply with the orders 
of any such court or other legally constituted authority or to be enforceable 
under the laws of the State of Texas, and as to all other portions of such 
agreement or covenants they shall remain in &11 force and effect as 
originally written.

                                       HEADINGS

     8.08. All headings set forth in this Agreement are intended for convenience
only and shall not control or affect the meaning, construction or effect of this
Agreement or of any of the provisions thereof.

                                      ASSIGNMENT

     8.09. Executive agrees that his representations, warranties, covenants,
promises and obligations contained herein may be assigned by Employer to any
person, partnership, firm, association, corporation or other business entity to
which Employer may transfer its business and assets or any portion thereof.


     EXECUTED as of the day and year first above written.


                                       EMPLOYER:

                                       IWL HOLDINGS CORP.


                                       By: /s/ JERE W. THOMPSON, JR.
                                          -----------------------------------
                                       Its: Chief Executive Officer
                                           ----------------------------------


                                       EXECUTIVE:


                                       /s/ KEVIN W. MCALEER
                                       --------------------------------------
                                       Kevin W. McAleer



                                      11

<PAGE>
                                       
                              SUBLEASE AGREEMENT

     This agreement is made and entered into as of this 22nd day of November, 
1994, between Arkwright Mutual Insurance Company, a Massachusetts 
corporation, hereinafter referred to as "Sublessor", and Caprock 
Communications, a Texas corporation, hereinafter referred to as "Sublessee".
                                       
                              W I T N E S S E T H

     WHEREAS, Sublessor, as Tenant, entered into a lease with Two Galleria 
Tower Limited, as Lessor, dated September 11, 1989, leasing certain space in 
the building known as Two Galleria Tower, 13455 Noel Road, Dallas, Texas, to 
which lease reference is hereby made as if the same were herein set forth at 
length, and which lease is hereinafter referred to as the "Prime Lease";

     WHEREAS, the parties hereto have agreed that Sublessor shall sublet 
approximately 8,418 rentable square feet of such space to Sublessee,

     NOW, THEREFORE the parties hereby covenant and agree as follows:

     1.  Sublessor shall sublet to Sublessee the 8,418 rentable square feet 
of the space on the nineteenth floor, shown on Exhibit "A" attached hereto 
and made a part hereof, for the term December 1, 1994 to April 30, 1999. 
Sublessee shall pay rent at a rate of $14.00 per rentable square foot per 
year throughout the term of the lease. Sublessee shall also be subject to its 
pro rata share of increases in taxes and operating expenses above base year 
1994, to be paid as "Additional Rent". All such payments of rent and 
additional rent shall be due and payable by Sublessee in twelve (12) equal 
installments on the first day of each calendar month during the term of the 
sublease. Sublessee's rent shall be abated for the first fifteen (15) days of 
the December 1994 rent, resulting in a December payment due upon lease 
execution of $4,910.50.

     2.  Sublessee shall pay a security deposit of $9,821 upon lease 
execution.

     3.  Sublessee shall sublease space in its "as is" condition.

     4.  Sublessor warrants and represents that it has, or will, comply with 
the provisions of IV.5, Assignment of Sublease, contained in the Prime Lease 
with respect to giving notice to the Lessor under the Prime Lease of its 
desire to sublet, and shall, on or

<PAGE>

before occupancy by Sublessee, furnish Sublessee satisfactory evidence of the 
approval of Lessor under the Prime Lease to this Sublease.

     5.  Sublessee shall be provided with up to twenty-seven (27) parking 
spaces, four (4) of which will be on the executive level, and corresponding 
access cards at no cost throughout the term. However, if cards are lost or 
stolen, Sublessee shall be subject to replacement charges under the Prime 
Lease.

     6.  If Sublessor shall be charged for additional rent or other sums 
pursuant to the provisions of the Prime Lease, Sublessee shall be liable for 
its pro rata share of such additional rent or sums. If such rent or sums 
shall be due to additional use by Sublessee of electrical current in excess 
of Sublessee's proportionate part of additional use in the premises demised 
under the Prime Lease, such excess shall be paid in entirety by Sublessee. If 
Sublessee shall procure any additional services from the building, Sublessee 
shall pay for same at the rates charged therefor by lessor under the Prime 
Lease. If Sublessor shall receive any refund under this Article, Sublessee 
shall be entitled to the return of so much thereof as shall be attributable 
to prior payments by Sublessee.

     7.  This sublease is subject and subordinate to the Prime Lease. Except 
as may be inconsistent with the terms hereof, all the terms, covenants and 
conditions in the Prime Lease shall be applicable to this Agreement with the 
same force and effect as if Sublessor were the Lessor under the Prime Lease 
and Sublessee were the Lessee thereunder; and in case of any breach hereof by 
Sublessee, Sublessor shall have all the rights against Sublessee as would be 
available to the Lessor against the Lessee under the Prime Lease if such 
breach were by the Lessee thereunder.

     8.  Notwithstanding anything herein, the only services or right to which 
Sublessee is entitled hereunder are those to which Sublessor is entitled under 
the Prime Lease and that for all such services and rights Sublessee will look 
to the Lessor under the Prime Lease.

     9.  Sublessee shall neither do nor permit anything to be done which 
would cause the Prime Lease to be terminated or forfeited by reason of any 
right of termination or forfeiture reserved or vested in the Lessor under the 
Prime Lease, and Sublessee shall indemnify and hold Sublessor harmless from 
and against all claims of any kind whatsoever

<PAGE>

by reason of any breach or default on the part of Sublessee by reason of 
which the Prime Lease may be terminated or forfeited.

     10. Sublessee represents that it has read and is familiar with the terms 
of the Prime Lease.

     11. All prior understandings and agreements between the parties are 
merged within this Agreement, which sets forth in entirety the understanding 
of the parties; and this sublease may not be changed or terminated orally or 
in any manner other than by an agreement in writing and signed by the party 
against whom enforcement of the change of termination is sought.

     12. The covenants and agreements contained herein shall bind and inure 
to the benefit of Sublessor, Sublessee, Sublessee Guarantor and their 
respective executors, administrators, successors and assigns.

     IN WITNESS WHEREOF, Sublessor and Sublessee have respectively signed and 
sealed this sublease as of the day and year first above written.


CAPROCK COMMUNICATIONS,                ARKWRIGHT MUTUAL
AS SUBLESSEE                           INSURANCE COMPANY,
                                       AS SUBLESSOR


By: /s/ Jere W. Thompson, Jr.          By: /s/ R. Bank
    --------------------------             --------------------------
Title: President                       Title: Senior Vice President
       -----------------------                -----------------------
Date: 11/11/94                         Date: 11/22/94
      ------------------------               ------------------------

<PAGE>
                                       
                                 [LETTERHEAD]

LEASE AGREEMENT


THE STATE OF TEXAS
COUNTY OF DALLAS


THIS LEASE AGREEMENT made and entered into on this the 25th day of January, 
1989 between Two Galleria Tower Limited, a limited partnership organized 
under the Texas Uniform Limited Partnership Act (hereinafter called "Lessor"),
whose address for purposes hereof is 2800 Post Oak Boulevard, Houston, Texas 
77056-6190, and Arkwright Mutual Insurance Company (hereinafter called 
"Lessee").


Lessee's address for purpose hereof until commencement of the term of this 
Lease being 12700 Hillcrest, Dallas, Texas 75230 and thereafter being that 
of the "Building" (thereafter defined).

                                       
                                  WITNESSETH:

                                       1.

Leased Premises

  1.  Subject to and upon the terms, provisions and conditions hereinafter 
set forth, and each in consideration of the duties, covenants and obligations 
of the other hereunder Lessor does hereby lease, demise and let to Lessee 
and Lessee does hereby lease from Lessor those certain premises (hereinafter 
sometimes called the "Leased Premises") in the building known as Two Galleria 
Tower/13455 Noel Road (herein called the "Building") located in Dallas, 
Texas, such premises being more particularly described as follows: Twenty two 
thousand three hundred sixty nine (22,369) square feet of Net Rentable Area 
located on the nineteenth (19th) floor as reflected on the floor plan of such 
premises attached hereto and made a part hereof as EXHIBIT A.

  2.  The term "Net Rentable Area" (NRA) as used herein shall refer to (i) in 
the case of single tenancy floor, all floor area measured from the inside 
surface of the outer glass or exterior wall of the Building to the inside 
surface of the opposite exterior wall, excluding only the areas within the 
outside walls used for elevator mechanical rooms, building stairs, fire 
towers, elevator shafts, flues, vents, stacks, vertical pipe shafts and 
vertical ducts, but including any such areas which are for the specific use 
of the particular tenant such as special stairs or elevators, plus an 
allocation of the square footage of the Building's elevator and main 
mechanical rooms, ground level lobby and basement service area and basement 
support facilities for such service area and (ii) in the case of a partial 
floor, all floor areas within the inside surface of the outer glass or 
exterior wall enclosing the portion of the Leased Premises on such floor and 
measured to the mid-point of the walls separating areas leased by or held for 
lease to other tenants or from areas devoted to corridors, elevator foyers, 
restrooms, mechanical rooms, janitor closets, vending areas and other 
similar facilities for the use of all tenants on the particular floor 
(hereinafter sometimes called "Common Areas"), but including a proportionate 
part of the Common Areas located on such floor based upon the ratio which the 
tenant's NRA on such floor bears to the aggregate NRA on such floor plus an 
allocation of the square footage of the Building's elevator and main 
mechanical rooms, ground level lobby and basement service area and basement 
service area and basement support facilities for such service area. No 
deductions from NRA are made for columns or projections necessary to the 
Building. All parking facilities located within the building are excluded 
from NRA. The NRA in the Leased Premises has been calculated on the basis of 
the foregoing definition and is hereby stipulated for all purposes hereof to 
be 22,369 square feet, whether the same should be more or less as a result of 
minor variations resulting from actual construction and completion of the 
Leased Premises for occupancy so long as such work is in accordance with the 
terms and provisions hereof.

<PAGE>

Term

  1.  (a)  Subject to and upon the terms and conditions set forth herein, or 
in any exhibit or addendum hereto, this Lease shall continue in force for a 
term of One hundred twenty (120) months, beginning on the 1st day of May 1989 
and ending on the 30th day of April 1999.

      (b)  In the event the Leased Premises should not be ready for occupancy 
by said commencement date for any reason, Lessor shall not be liable or 
responsible for any claims, damages or liabilities in connection therewith or 
by reason thereof. This Lease Agreement shall be effective only from the time 
that the leased premises are ready for occupancy by Lessee which date shall 
be the date of commencement of the term of this lease. Should the term of 
this Lease commence on a date other than that specified in Paragraph 1(a) 
above, of Article II, Lessor and Lessee will, at the request of either, 
execute a declaration specifying the beginning date of the term of this Lease 
Agreement. In such event, rental under this Lease shall not commence until 
said revised commencement date, and the stated term in this Lease shall 
thereupon commence and the expiration date shall be extended so as to give 
effect to the full stated term.

Use

  2.  The Leased Premises are to be used and occupied by Lessee for the 
purpose of office space.

Base Rental

  3.  Lessee hereby agrees to pay a base annual rental (herein called "Base 
Rental") in the sum of ** per year. Lessee shall pay, as additional rent, all 
other sums of money as shall become due and payable by Lessee to Lessor 
under this Lease. The Lessor shall have the same remedies of default for the 
payment of additional rent as are available to Lessor in the case of a default 
in the payment of Base Rental. Such Base Rental, together with any 
adjustments of rent provided for herein then in effect, shall be due and 
payable in twelve (12) equal installments on the first day of each 
calendar month during the initial term or any extensions or renewals thereof, 
and Lessee hereby agrees to pay such rent to Lessor at such address as may be 
designated by lessor monthly in advance without demand. If the term of this 
Lease as heretofore established commences on other than the first day of a
month or terminates on other than the last day of a month, then the installment
of Base Rental of such month or months shall be prorated and the installment 
or installments so prorated shall be paid in advance. All past due 
installments of rent shall bear interest at the maximum lawful rate* per annum 
until paid. *not to exceed 18% per annum. **See Addendum Paragraph 2.

  4.  The Base Rental Adjustment shall be calculated in accordance with the 
following:

      (a)  Lessee's Base Rental includes a component applicable to Basic 
Costs (hereafter defined) equal to *$6.15/square foot of NRA of the Leased 
Premises. This amount is an estimate of Basic Costs as if the Building, 
Parking Garage(s) in which tenants of the Building are authorized to park 
from time to time, and skywalks (the "Office Project") were in operation 
in 1988.

      (b)  Prior to the Lessee's occupancy of the Leased Premises, Lessor 
will provide an updated estimate of Basic Costs for the year in which 
occupancy occurs. If this estimate exceeds *$6.14/square foot of NRA, then 
Lessee's Base Rental shall be adjusted upward by the amount of this excess.

      (c)  Prior to the commencement of each calendar year of Lessee's 
occupancy, Lessor shall provide an estimate of Basic Costs for said calendar 
year. Lessee shall pay a Base Rental for said calendar year adjusted upward 
or downward, as appropriate, by the amount of difference between the prior 
calendar year's estimated Basic Costs and the coming year's estimated Basic 
Costs.

      (d)  Within 150 days or as soon thereafter as possible of the 
conclusion of each calendar year of the lease term, Lessor shall furnish to 
Lessee a statement of Lessor's Basic Costs for said lease year. A lump sum 
payment will be made from Lessor to Lessee for from Lessee to Lessor, as 
appropriate, within 30 days of the delivery of such statement equal to the 
difference in actual Basic Costs and estimated Basic Costs for which payments 
have been included in the adjusted Base Rental set forth above for the just 
completed year. The effect of this reconciliation payment is that lessee will 
pay during the lease term its share of Basic Costs increases over the 
original *$6.15/square foot estimate and no more.

*Notwithstanding anything to the contrary, Lessee shall only be responsible 
for increases in basic costs beyond base year 1989.

      (e)  All increases in Basic Costs shall be paid by Lessee in the 
proportion which Lessee's Net Rentable Area bears to 95% of the total Net 
Rentable Area in the Building or to the total Net Rentable Area leased in the 
Building (if such total leased is greater than 95% of the total Building NRA).

  Nothing contained in this Paragraph 4 shall be construed at any time so to 
reduce the monthly installments of Base Rental payable hereunder below the 
amount set forth in Article II, Paragraph 3, of this lease.

2

<PAGE>

     *To the extent expenses outlined herein and incurred for the benefit of
     other portions of the Complex in addition to the Office Project then the
     Office Project will only be billed its proportionate share of such
     expense.

     BASIS COSTS DEFINED

     5.  "Basic Costs" as said term is used herein shall consist of all
operating expenses of the Office Project, which shall be computed on the
accrual basis and shall include all expenditures by Lessor to maintain and
operate all facilities of the Office Project in operation from the beginning
of the lease term and such additional facilities in subsequent years as may
be determined by Lessor to be necessary.  All operating expenses shall be
determined in accordance with generally accepted accounting principals which
shall be consistently applied.  The term "operating expenses" as used herein
shall mean all expenses, costs and disbursements (but not replacement of
capital investment items nor specific costs especially billed to and paid by
specific tenants) of every kind and nature which Lessor shall pay or become
obligated to pay because of or in connection with the ownership and operation
of the Office Project, including but not limited to, the following:

     *(a) Wages, salaries and all related expenses and benefits, of all
employees engaged in operation and maintenance, or security of the Office
Project and personnel who may provide traffic control relating to ingress and
engress to and from the parking facilities which are part of the Office Project
to the surrounding public streets.  All taxes, insurance and benefits
relating to employees providing these services shall be included.

     (b)  Cost of all supplies and materials and equipment rented or used in
operation and maintenance of the Office Project.

     (c)  Cost of all utilities for the Office Project, including the cost of
water and power, heating, lighting, air conditioning and ventilating for the
Office Project (including charges to the Office Project for any such services
for the Office Project provided from a central plant which also serves other
parts of the Complex.

     (d)  Management costs and the cost of all maintenance and service
agreements for the Office Project and the equipment therein, including, but
not limited to alarm service, window cleaning, security service, traffic
control, janitorial service and elevator maintenance.

     (e)  Cost of all insurance relating to the Office Project, including,
but not limited to the cost of fire, rental abatement, casualty and liability
insurance applicable to the Office Project and Lessor's personal property
used in connection therewith.

     *(f) All taxes and assessments and governmental charges whether federal,
state, county or municipal, and whether they be taxing districts or
authorities presently taxing the Office Project or by others subsequently
created or otherwise, and any other taxes and assessments attributable to the
Office Project or its operation and an allocation to the Office Project of
the taxes for the service roads which serve the Complex.  It is agreed that
Lessee will be responsible for ad valorem taxes on its personal property and on
the value of leasehold improvements which exceed those existing as of the
commencement of the Lease as approved by Lessor.

     (g)  Cost of repairs and general maintenance of the Office Project
(excluding repairs and general maintenance paid by proceeds of insurance or
by Lessee or other third parties, and alterations attributable solely to
tenants of the Building other than Lessee).

     (h)  Amortization of the cost of installation of capital investment items
which are primarily for the purpose of reducing operating costs or which may
be required by governmental authority.  All such costs shall be amortized
over the reasonable life of the capital investment items by including in
Basic Costs annually the applicable amortization amount, with the reasonable
life and amortization schedule being determined in accordance with generally
accepted accounting principles and in no event to extend beyond the
reasonable life of the Building.

     (i)  Lessor's central accounting costs applicable to the Office Project.

     (j)  Any allocation of expenditures for service or operation of the
Complex attributable to the Office Project, determined in accordance with
generally accepted accounting principles.

     *(k) Cost of an office in the Building maintained for management of the
Building.

     As used herein, the term "Complex" shall mean the Office Project and the
other parts of a larger development bounded by Dallas Parkway, Alpha Road,
Noel Road, and LBJ Freeway which from time to time are subject to reciprocal
easement arrangements for common use of certain areas in an integrated
mixed-use Complex.

     Notwithstanding any other provision herein to the contrary, it is agreed
that in the event the Building is not fully occupied during any year of the
lease term, an adjustment shall be made in computing the Basic Costs for such
year so that the Basic Costs shall be computed for such year as though the
Building had been fully occupied during such year.

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          Lessee at its expense shall have the right at any reasonable time
     within twelve months after the end of a year in which additional rental
     is due, to retain an independent certified public accountant to audit
     Lessor's books and records relating to this Lease for any year or years
     for which additional rental payments become due or at Lessor's sole
     discretion.  Lessor will provide such audit prepared by a certified public
     accountant.  If Lessee's audit reveals a discrepency by more than 5%, then
     Lessor shall bear the full cost of such audit.

                                     III.

SERVICES TO BE FURNISHED BY LESSOR

     Lessor covenants and agrees with Lessee: Lessor agrees to use its
reasonable efforts to keep all services in good working order.

     1.  To use its best efforts to cause public utilities to furnish the
electricity, gas and water utilized in operating any and all facilities
serving the leased premises.

     2.  To provide (as part of the Basic Costs of the Office Project)
security to the Building during weekends and after normal working hours during
the week.  Lessor shall not be liable to Lessee for losses due to theft or
burglary or for damages done by unauthorized persons on the premises.

     3.  To furnish (as part of the Basic Costs of the Office Project) Lessee
while occupying the premises:

         (a)  Hot and cold water at those points of supply provided for
general use of other tenants in the Building; central heat and air
conditioning in season at such temperatures and in such amounts as are
considered by Lessor to be standard, in comparison to other Class A office
buildings in the North Dallas area, but such service at times during week days
other than normal business hours for the Building, on Saturday afternoons,
Sundays, and holidays to be furnished only upon the request of Lessee, who
shall bear the entire cost thereof. (After hour HVAC charges shall be at 
$25.00 per hour.)  However, this cost may be adjusted if Lessor's cost 
increases; routine maintenance and electric lighting service for all public 
areas and special service areas of the Building in the manner and to the 
extent deemed by Lessor to be standard, in comparison with other Class A 
office buildings in the North Dallas area.

         (b)  Janitor service on a five (5) day week basis at no extra
charge for improvements as of the commencement date of the Lease as approved
by Lessor, provided, however, if Lessee's floor coverings or other improvements
are other than building standard.  Lessee shall pay the additional cleaning
cost attributable thereto as additional rent.  Lessee shall pay said
additional rent upon presentation of a statement therefor by Lessor and
Lessee's failure to pay shall constitute default hereunder.

         (c)  Electrical facilities to furnish sufficient power for
typewriters, voice writers, calculating machines and other machines of
similar low electrical consumption (total consumption not to exceed one watt
per square foot of Net Rental Area per month); but not including electricity
required for duplicating and electronic data processing equipment, special
lighting in excess of building standard, and any other item of electrical
equipment which (singly) consumes more than 0.5 kilowatts at rated capacity
or requires a voltage other than 120 volts single phase and provided that if
the installation of said electrical equipment requires additional air
conditioning capacity above that provided by the building standard system
then the additional air conditioning installation and operating costs will be
the obligation of Lessee.

         (d)  All building standard fluorescent bulbs replacement in all areas
and all incandescent bulb replacement in public areas, toilet and restroom
areas and stairwells.

     Failure by Lessor to any extent to furnish these defined services, or
any cessation thereof, resulting from causes beyond the reasonable control of
Lessor shall not render Lessor liable in any respect for damages to either
person or property, nor be construed as an eviction of Lessee, nor work an
abatement of rent, nor relieve Lessee from fulfillment of any covenant or
agreement thereof.  Should any of the equipment or machinery serving the
Office Project break down, or for any cause cease to function properly,
Lessee shall have no claim for rebate of rent or damages on account of an
interruption in service occasioned thereby or resulting therefrom.  In the
event the Leased premises are rendered untenantable for a period of more than
five (5) business days as a result thereof rent shall be abated during such
period for such portion of the Leased Premises that are not tenantable.

     KEYS AND LOCKS

     4.  To furnish Lessee ten (10) keys (with more as needed be Lessee) for 
each corridor door entering the Leased Premises.  Additional keys will be 
furnished at no charge by Lessor on an order signed by Lessee or Lessee's 
authorized representative.  All such keys shall remain the property of Lessor. 
No additional locks shall be allowed on any door of the Leased Premises without
Lessor's permission, and Lessee shall not make or permit to be made any 
duplicate keys, except those furnished by Lessor.  Upon termination of this 
Lease, Lessee shall surrender to Lessor all keys of the Leased Premises, and 
give to Lessor the explanation of the combination of all locks for safes, safe 
cabinets and vault doors, if any, in the Leased Premises.

     WINDOW COVERINGS

     5.  To provide window coverings as indicated in Schedule I hereto.
Lessee agrees that any window covering in addition to those indicated in
Schedule I are at Lessee's cost and are subject to Lessor's written approval.

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Graphics

  6.  To provide and install, at Lessor's cost, all letters or numerals on
doors in the Leased Premises; all such letters and numerals shall be in
Building standard graphics, and no others shall be used or permitted on the
Leased Premises. Lessor also agrees to provide and install, at its expense, a
listing on the Building directory board.

Improvement to be made by Lessor

  7.  Lessee shall comply with the Lessee improvement schedule attached hereto
and made a part hereof as Schedule II. After receipt of the approved tenant
pricing letter described in said Schedule II, Lessor will partition and
prepare said Leased Premises in accordance therewith; however, Lessor shall
not be required to install any partitions or improvements which are not in
conformity with the plans and specifications for the Building or which are not
approved by Lessor and Lessor's architect. It is stipulated that time is of
the essence in connection with Lessee's compliance with the terms of Schedule
II. The provisions of Schedule II or payments by Lessee to Lessor for failure
to comply with the provisions of Schedule II shall not alter Lessor's right to
treat any such default by Lessee as a complete default under this Lease.

Peaceful Enjoyment

  8.  That Lessee shall, and may peacefully have, hold and enjoy the Leased
Premises, subject to the other terms hereof, provided that Lessee pays the
rental and other sums herein recited to be paid by Lessee and performs all of
Lessee's covenants and agreements herein contained. It is understood and
agreed that this covenant and any and all other covenants of Lessor contained
in this Lease shall be binding upon Lessor and its successors only with
respect to breaches occurring during its and their respective ownerships of
the Lessor's interest hereunder.

Limitation of Lessor's Personal Liability

  9.  Lessee specifically agrees to look solely to Lessor's interest in the
Building for the recovery of any judgment from Lessor, it being agreed that
Lessor shall never be personally liable for any such judgment. The provision
contained in the foregoing sentence is not intended to, and shall not, limit
any right that Lessee might otherwise have to obtain injunctive relief against
Lessor or Lessor's successors in interest, or any other action not involving
the personal liability of Lessor to respond in monetary damages from assets
other than Lessor's interest in the Building or any suit or action in
connection with enforcement or collection of amounts which may become owing or
payable under or on account of insurance maintained by Lessor.

Parking

  10.  Lessee shall at all times during the term of this Lease lease parking
rights for at least 71 regular/9 executive vehicles in the Parking Garage
located adjacent to the Building. Lessee shall have the right to lease up to
*5 additional parking rights during the lease term at the then prevailing
market rate for parking spaces in the Garage. No specific spaces in the
Parking Garage are to be assigned to Lessee but Lessor will issue to Lessee
the aforesaid number of parking stickers each of which will authorize parking
in the Parking Garage of a vehicle on which the sticker is displayed, or
Lessor will provide a reasonable alternative means of identifying or
controlling vehicles authorized to be parked in the Parking Garage. Lessor may
designate the area within which each such vehicle may be parked, and Lessor
may change such designations from time to time. Lessor may make, modify and
enforce rules and regulations relating to the parking of automobiles in the
Parking Garage, and Lessee will abide by such rules and regulations. Lessor
also reserves the right to increase the size of the Parking Garage.

*71 regular and 9 executive parking spaces shall be provided at no charge for
the term of the lease. The five (5) additional spaces will also be provided at
no charge for the term of the lease.

  As the Basic Parking Charge, Lessee covenants and agrees to pay Lessor
during the term of this Lease, as additional rental hereunder, the sum of
*$45.00 per month plus any applicable Sales Tax for each of the parking
stickers to be issued by Lessor as herein provided, such sum to be payable
monthly in advance on the first day of each and every calendar month during
the lease term, and a pro rata portion of such sum shall be payable for the
first partial calendar month in the event the lease term commences on a date
other

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than the first day of a calendar month, Lessee's obligation to pay the Parking
Charge shall be considered an obligation to pay rent for all purposes
hereunder and shall be secured in like manner as is Lessee's obligation to pay
rent. Default in payment of such Parking Charge (after notice as hereinafter
provided) shall be deemed a default in payment of rent.

                                      IV.

Lessee covenants and agrees with Lessor:

Payments by Lessee

  1.  To pay all rent and sums provided to be paid to Lessor hereunder at the
times and in the manner herein provided.

Repairs by Lessor

  2.  Unless otherwise stipulated herein, Lessor shall not be required to make
any improvements or repairs of any kind or character on the Leased Premises
during the term of this lease, except such repairs as may be required for
normal maintenance operations. The obligation of Lessor to maintain and repair
the Leased Premises shall be limited to building standard items. Special
leasehold improvements will, at Lessee's written request, be maintained by
Lessor at Lessee's costs, plus an additional charge, to cover overhead.

Repairs by Lessee

  3.  At its own cost and expense, to repair and replace any damage or injury
to the Building, or any part thereof, caused by Lessee or Lessee's agents,
employees, invitees or visitors; provided, however, if Lessee fails to make
such repairs or replacement promptly Lessor may, at its option, make such
repairs or replacements, and Lessee shall repay the cost thereof to the Lessor
on demand, subject to Article V, paragraph 15.

Care of the Lease Premises

  4.  Not to commit or allow any waste or damage to be committed on any
portion of the Leased Premises, and at the termination of this Lease, by lapse
of time or otherwise, to deliver up said Leased Premises to Lessor in as good
condition as at date of possession by Lessee, ordinary wear and tear excepted,
and upon such termination of this Lease, Lessor shall have the right to
re-enter and resume possession of the Leased Premises.

Assignment or Sublease

  5.  In the event Lessee should desire to assign this Agreement or sublet the
Leased Premises or any part thereof, Lessee shall give Lessor written notice
of such desire at least thirty (30) days in advance of the date on which
Lessee desires to make such assignment or sublease. Lessor shall then have a
period of fifteen (15) days following receipt of such notice within which to
notify Lessee in writing that Lessor elects either (1) to terminate this
agreement as to the space so affected as of the date so specified by Lessee in
which event Lessee will be relieved of all further obligation hereunder as to
such space, or (2) to permit Lessee to assign or sublet such space, subject,
however, to subsequent written approval of the proposed assignee or sublessee
by Lessor which approval shall not be unreasonably withheld or delayed
provided such sublessee or assign is of character consistent with other
tenants in the building; if however, the rental rate agreed upon between
Lessee and Sublessee is greater than the rental rate that Lessee must pay
Lessor, then such excess rental shall be deemed additional rent owed by Lessee
to Lessor and shall be paid by Lessee to Lessor in the same manner that Lessee
pays the base rent as outlined in Section II, Paragraph 3 (such excess rental
shall be due and payable to Lessor after Lessee has been reimbursed for
reasonable out of pocket expenses and attorney's fees relating to the
assignment or sublease) or (3) to refuse to consent which approval shall not
be unreasonably withheld or delayed provided such sublessee or assign is of
character consistent with other tenants in the building (with cause only) to
Lessee's assignment or subleasing such space and to continue this Lease in
full force and effect as to the entire Leased Premises. If Lessor should fail
to notify Lessee in writing of such election within said fifteen (15) period.
Lessor shall be deemed to have elected option (2) above. Excluding the Hobbs
Group, if Lessor elects to exercise option (2) above, Lessee agrees to provide
at its expense, direct access from such sublet space to a public corridor of
the Building. No assignment or subletting by Lessee shall relieve Lessee of
any obligation under this Lease. Any attempted assignment or sublease by
Lessee in violation of the terms and covenants of this paragraph shall be
void.  Notwithstanding the foregoing, Lessee shall be entitled to assign or
sublease this Lease without Lessor's prior written approval to an affiliate or
subsidiary of Arkwright Mutual Insurance Company, provided however, no such
assignment or sublease shall relieve Lessee of any obligation under this Lease.

Alterations, Additions, Improvements

  6.  Not to permit the Leased Premises to be used for any purpose other than
that stated in the use clause hereof, or make or allow to be made any
alterations or physical additions in or to the Leased Premises, without first
obtaining the written consent of Lessor. Any and all such alterations,
physical additions, or improvements, when made to the Leased Premises by
Lessee, shall at once become the property of Lessor and shall be surrendered
to Lessor upon the termination of this Lease by lapse of time or otherwise;
provided, however, this clause shall not apply to movable equipment or
furniture owned by Lessee. Lessee agrees specifically that no food, soft drink
or other vending machine will be installed within the Leased Premises except
for machines installed for the exclusive use of employee.

Legal Use and Violations of Insurance Coverage

  7.  Not to occupy or use,or permit any portion of the Leased Premises to be
occupied or used for any business or purpose which is unlawful, disreputable
or deemed to be extra-hazardous on account of fire, or permit anything to be
done which would in any way increase the rate of fire insurance coverage on
said Building and/or its contents.

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LAWS AND REGULATIONS; RULES OF BUILDING

    8.  To comply with all laws, ordinances, orders, rules and regulations
(state, federal, municipal and other agencies or bodies having any
jurisdiction thereof) relating to the use, condition and occupancy of the
Leased Premises.  Lessee will comply with the rules of the Building adopted
by Lessor from time to time for the safety, care and cleanliness of the
Leased Premises and for preservation of good order therein, all of which will
be sent by Lessor to Lessee in writing and shall be thereafter carried out
and observed by Lessee.

ENTRY FOR REPAIRS AND INSPECTION

     9.  To permit Lessor or its agents or representatives to enter into with
reasonable prior notice except in the case of an emergency and upon any part
of the Leased Premises at all reasonable hours to inspect same, clean or make
repairs, alterations or additions thereto, as Lessor may deem necessary or
desirable, and Lessee shall not be entitled to any abatement or reduction of
rent by reason thereof. If the Leased premises become untenantable for a
period of more than five (5) business days as a result hereof, Lessee shall be
granted rental abatement during such period on such portion of Leased Premises
which are untenantable until said repairs are completed.

NUISANCE

    10.  To conduct its business and control its agents, employees, invitees
and visitors in such manner as not to create any nuisance, or interfere with,
annoy or disturb any other tenant or Lessor in his operation of the Building.

SUBORDINATION TO MORTGAGE

    11.  This Lease is subject and subordinate to any first lien mortgage or
deed of trust which may now or hereafter encumber the Building of which the
Leased Premises form a part and to all renewals, modifications,
consolidations, replacements and extentions thereof.  This clause shall be
self-operative and no further instrument of subordination need be required by
any mortgagee.  In confirmation of such subordination, however, Lessee shall
at Lessor's request execute promptly any appropriate certificate or
instrument that Lessor may request.  Lessee hereby constitutes and appoints
Lessor the Lessee's attorney-in-fact to execute any such certificate or
instrument for and on behalf of Lessee.  In the event of the enforcement by
the trustee or the beneficiary under any such mortgage or deed of trust of
the remedies provided for by law or by such mortgage or deed of trust.
Lessee, will, upon request of any person or party succeeding to the interest
of Lessor as a result of such enforcement, automatically become the Lessee of
such successor in interest without change in the terms or other provisions of
such lease, provided, however, that such successor in interest shall not be
bound by (i) any payment of rent or additional rent for more than one month
in advance except prepayments in the nature of security for the performance
by Lessee of its obligations under this lease or (ii) any amendment or
modification of this Lease made without the written consent of such trustee
or such beneficiary or such successor in interest.  Upon request by such
successor in interest, Lessee shall execute and deliver an instrument or
instruments confirming the attornment herein provided for.

ESTOPPEL CERTIFICATE OR THIRD PARTY AGREEMENT

    12.  At Lessor's request Lessee will execute either an estoppel
certificate addressed to Lessor's mortgagee or a three-party agreement among
Lessor.  Lessee and said mortgagee certifying as to such facts (if true) and
agreeing to such notice provisions and other matters as such Mortgagee may
reasonably require in connection with Lessor's financing.

NAME CHANGES

    13.  That Lessor shall have the right to change the name of the Building
and/or Complex or the design of construction of the building thereof whenever
Lessor, in its sole discretion deems it appropriate without any liability to
Lessee and without any consent of Lessee being necessary provided Lessee is
given sixty (60) days notice of such name change or construction.

                                      V.

Lessor and Lessee mutually covenant and agree as follows:

CONDEMNATION AND LOSS OR DAMAGE

     1.  If the Leased Premises shall be taken or condemned for public
purpose to such an extent as to render the Leased Premises untenantable this
lease shall, at the option of either party, forthwith cease and terminate.
All proceeds from any taking or condemnation of the Leased Premises shall
belong to and be paid to Lessor.

DAMAGES FROM CERTAIN CAUSES

     2.  Lessor shall not be liable or responsible to Lessee for any loss or
damage to any property or person occasioned by theft, fire, act of God, public
enemy, injunction, riot, strike, insurrection, war, court order, requisition
or order of governmental body or authority, or for any damage or inconvenience
which may arise through repair or alternation of any part of the Building, or
failure to make any such repairs.  If the Leased premises are made
untenantable for a period of more than five (5) business days from a result of
an occurrence of this paragraph, Lessee shall receive rental abatement during
such period on such portion of the Leased Premises which are untenantable
until the Leased Premises are again tenantable.

LESSOR'S RIGHT TO RELET

     3.  The Lease Premises will not be considered abandoned as long as rent
is being paid.  In the event of default by Lessee in any of the terms or
covenants of this Lease or in the event the Leased Premises are abandoned by
Lessee, Lessor shall have the right, but not the obligations, to relet same
for the remainder of the term provided for herein; and if the rent received
through such reletting does not at least equal the rent provided for herein,
Lessee shall pay and satisfy any deficiency between the amount of the rent so
provided for and that received through reletting, and, in addition

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thereto, shall pay all reasonable expenses incurred in connection with any
such reletting, including, but not limited to, the reasonable cost of
renovating, altering and decorating for a new occupant.  Nothing herein
shall be construed as in any way denying Lessor the right in the event of
abandonment of said premises of other breach of this agreement by Lessee, to
treat the same as an entire breach and at Lessor's option to immediately sue
for the entire breach of this agreement and any and all damages which Lessor
suffers thereby.

HOLDING OVER

     4.  In the event of holding over by Lessee after expiration or
termination of this Lease without the written consent of Lessor, Lessee shall
pay as liquidated damages 150% rent for the entire holdover period.  No
holding over by Lessee after the term of this Lease shall operate to extend
the Lease, in the event of any unauthorized holding over, Lessee shall
indemnify Lessor against all claims for damages by any other lessee to whom
Lessor may have leased all or any part of the premises covered hereby
effective upon the termination of this Lease.  Any holding over with the
consent of Lessor in writing shall thereafter constitute this Lease a lease
from month to month.

FIRE CLAUSE

     5.  In the event of a fire in the Leased Premises, Lessee shall
immediately give notice thereof to Lessor.  If the Leased Premises, through
no fault or neglect of Lessee, its agents, employees, invitees or visitors,
shall be partially destroyed by fire or other casualty so as to render the
Leased Premises untenantable, the rental herein shall abate thereafter
until such time as the Leased Premises are made tenantable as determined by
Lessor.  In the event of the total destruction of the Leased Premises without
fault or neglect of Lessee, its agents, employees, invitees or visitors, or
if from such cause the same shall be so damaged that Lessor shall decide not
to rebuild, then all rent owed up to the time of such destruction or
termination shall be paid by Lessee and thenceforth this lease shall cease
and come to an end.

ATTORNEY'S FEES

     6.  In the event Lessee or Lessor makes default in the performance of
any of the terms, covenants, agreements or conditions contained in this Lease
and Lessor or Lessee places the enforcement of this Lease, or any part
thereof, or the collection of any rent due, or to become due hereunder, or
recovery of the possession of the Leased Premises in the hands of an
attorney, or files suit upon the same, Lessee or Lessor agrees to pay the
prevailing party's reasonable attorney's fees.

ALTERATION

     7.  This agreement may not be altered, changed or amended, except by an
instrument in writing, signed by both parties hereto.

ASSIGNMENT BY LESSOR

     8.  Lessor shall have the right to transfer and assign, in whole or in
part, all its rights and obligation hereunder and in the Building and
property referred to herein, and in such event and upon its transferee's
assuming Lessor's obligations hereunder (any such transferee to have the
benefit of, and be subject to, the provisions of Paragraphs 8 and 9 of Article
III hereof) no further liability or obligation shall thereafter accrue
against Lessor hereunder.

DEFAULT BY LESSEE

     9.  If default shall be made in the payment of any sum to be paid by 
Lessee under this Lease, and default shall continue for ten (10) days, or 
default shall be made in the performance of any of the other covenants or 
conditions which Lessee is required to observe and to perform, and such 
default shall continue for twenty (20) days, or if the interest of Lessee 
under this Lease shall be levied on under execution or other legal process, 
or if any petition shall be filed by or against Lessee to declare Lessee a 
bankrupt or to delay, reduce or modify Lessee's debts or obligations, or if 
any petition shall be filed or other action taken to reorganize or modify 
Lessee's capital structure if Lessee be a corporation or other entity; or if 
Lessee be declared insolvent according to law, or if any assignment of 
Lessee's property shall be made for the benefit of creditors, or if a 
receiver or trustee is appointed for Lessee or its property, or if Lessee 
shall abandon (The Leased Premises shall not be considered as abandoned as 
long as rent is being paid.) the Leased Premises during the term of this 
Lease or any renewals or extensions thereof, then Lessor may treat the 
occurrence of any one or more of the foregoing events as a breach of this 
Lease (provided that no such levy, execution, legal process or petition filed 
against Lessee shall constitute a breach of this Lease if Lessee shall 
vigorously contest the same by appropriate proceedings and shall remove or 
vacate the same within thirty (30) days from the date of its creation, 
service or filing) and thereupon, at Lessor's option, may have any one or 
more of the following described remedies in addition to all other rights and 
remedies provided at law or in equity:

or five (5) days after receipt of written notice by Lessee, such notice being 
delivered by Lessor on the eleventh (11th) day after rent is not received, 
and such notice shall not be required of Lessor more than twice per annum 

          (a)  Lessor may terminate this Lease and forthwith repossess the 
Leased Premises and be entitled to recover forthwith as damages a sum of 
money equal to the total of (i) the cost of recovering the Leased Premises, 
(ii) the unpaid rent earned at the time of termination, plus interest thereon 
at the

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maximum lawful rate per annum from the due date, (iii) the balance of the
rent for the remainder of the term less the fair market rental value of the
Leased Premises for said period and (iv) any other sum of money and damages
owed by Lessee to Lessor.

     (b)  Lessor may terminate Lessee's right of possession (but not the
Lease) and may repossess the Leased Premises by forcible entry or detainer
suit or otherwise, without demand or notice of any kind to Lessee and without
terminating this Lease, in which event Lessor may but shall be under no
obligation to do so, relet the same for the account of Lessee for such rent
and upon such terms as shall be satisfactory to Lessor.  For the purpose of
such reletting Lessor is authorized to decorate or to make any repairs,
changes, alterations or additions in or to Leased Premises that may be
necessary or convenient, and (i) if Lessor shall fail or refuse to relet the
Leased Premises, or (ii) if the same are relet and a sufficient sum shall not
be realized from such reletting after paying the unpaid basic and additional
rent due hereunder earned but unpaid at the time of reletting plus ten per
cent per annum thereon, the cost of recovering possession, and all of the
costs and expenses of such decorations, repairs, changes, alterations and
additions and the expense of such reletting and of the collection of the rent
accruing therefrom to satisfy the rent provided for in this lease to be paid,
then Lessee shall pay to Lessor as damages a sum equal to the amount of the
rental reserved in this lease for such period or periods, or if the leased
premises have been relet, the Lessee shall satisfy and pay any such
deficiency upon demand therefor from time to time and Lessee agrees that
Lessor may file suit to recover any sums falling due under the terms of this
Article V, Paragraph 9(b) from time to time; and that no delivery to or
recovery of any portion due Lessor hereunder shall be any defense in any
action to recover any amount not therefore reduced to judgment in favor of
Lessor, nor shall such reletting be construed as an election on the part of
Lessor to terminate this Lease unless a written notice of such intention be
given by Lessor to Lessee.  Notwithstanding any such reletting without
termination, Lessor may at any time thereafter elect to terminate this Lease
for such previous breach.

     NON-WAIVER

     10.  Failure of Lessor to declare any default immediately upon
occurrence thereof, or delay in taking action in connection therewith, shall
not waive such default, but Lessor shall have the right to declare any such
default at any time and take such action as might be lawful or authorized
hereunder, either in law or in equity.  Lessor agrees to disclose to Lessee
within sixty (60) days any default after it comes to Lessor's attention.

     CASUALTY INSURANCE

     11.  Lessor shall maintain fire and extended coverage insurance on the
portion of the Building constructed by Lessor, including additions and
improvements by Lessee which are required to be made by Lessee by this Lease
and which have become or are to become the property of Lessor upon vacation of
the Leased Premises by Lessee.  Said insurance shall be maintained with an
insurance company authorized to do business in Texas, in amounts and with
deductibles desired by Lessor and at the expense of Lessor and payments for
losses thereunder shall be made solely to Lessor.  Lessee shall maintain at
its expense fire and extended coverage insurance on all of its personal
property, including removable trade fixtures, located in the Leased Premises
and on all additions and improvements made by Lessee and not required to be
insured by Lessor above.  If the annual premiums to be paid by Lessor shall
exceed the standard rates because Lessee's operations, contents of the Leased
Premises, or improvements with respect to the Leased Premises beyond building
standard, result in extra hazardous exposure, Lessee shall promptly pay the
excess amount of the premium upon request by Lessor.

     LIABILITY INSURANCE

     12.  Lessor shall, at its expense, maintain a policy or policies of
comprehensive general liability insurance with the premiums thereon fully
paid on or before due date, issued by and binding upon some solvent insurance
company, such insurance to afford minimum protection of not less than Three
Hundred Thousand Dollars ($300,000,000) in respect of personal injury or
death in respect to any one occurrence, and of not less than One Hundred
Thousand Dollars ($100,000,000) for property damage in any one occurrence.

     HOLD HARMLESS

     13.  Lessee shall not be liable to Lessor, or to Lessor's agents,
servants, employees, customers or invitees for any damage to person or
property caused by any act, omission or neglect of Lessor, its servants or
employees, and Lessor agrees to indemnify and hold Lessee harmless from all
claims for such damage.  Lessor shall not be liable to Lessee, or to Lessee's
agents, servants, employees, customers or invitees for any damage to person or
property caused by any act, omission or neglect of Lessee, its agents,
servants or employees, and Lessee agrees to indemnify and hold Lessor harmless
from all liability and claims for any such damage.

9
<PAGE>

     WAIVER OF SUBROGATION RIGHTS

     14.  Anything in this Lease to the contrary notwithstanding, Lessor and
Lessee each hereby waives any and all rights of recovery, claim, action or
cause of action, against the other, its agents, officers, or employees, for
any loss or damage that may occur to the premises hereby demised, or any
improvements thereto, or said Building of which the Leased Premises are a
part, or any improvements thereto, or any personal property of such party
therein, by reason of fire, the elements, or any other cause which could be
insured against under the terms of standard fire and extended coverage
insurance policies referred to in Article V, Paragraph II, hereof, regardless
of cause or origin including negligence of the other party hereto, its
agents, officers or employees, and covenants that no insurer shall hold any
right of subrogation against such other party.  This waiver of subrogation
provision shall be effective to the full extent, but only to the extent, that
the same does not impair the effectiveness of insurance policies of Lessor
and Lessee.

     NOTICE

     15.  All notices, demands, consents and approvals which may or are
required to be given by either party to the other hereunder shall be in
writing and shall be deemed to have been fully given when deposited in the
United States mail, certified or registered, postage prepaid, and addressed
to the party to be notified at the address for such party specified in this
Lease Agreement*, or to such other place as the party to be notified may from
time to time designate by at least fifteen (15) days notice to the notifying
party.  Lessee hereby appoints as an agent to receive the service of all
dispossessory or distraint proceedings and notices thereunder the person in
charge of or occupying the Leased Premises at the time, and if no person
shall be in charge of or occupying the same, then such service may be made by
attaching the same on the main entrance of the Leased Premises.

     NO JOINT VENTURE

     16.  This Lease shall not be deemed or construed to create or establish
any relationship (other than that of the landlord and tenant) or
partnership or joint venture or similar relationship or agreement between
Lessor and Lessee hereunder.

     *provided a duplicate of such notice or notices shall simultaneously be
mailed by certified or registered mail, return receipt requested to:
Arkwright Mutual Insurance Company, C/O Assistant Property Manager, 225 Wyman
Street, Waltham, Mass. 02254-9198 or such other address as Lessee may
designate by written notice to Lessor and if no person shall be in charge or
occupy the same then such service may be made by attaching same on the main
entrance of the premises, provided a duplicate of such notice or notices be
simultaneously mailed by certified or registered mail, return receipt to the
address indicated above.

10
<PAGE>

     This Lease shall be binding upon and inure to the benefit of the
successors and assigns of the Lessor, and shall be binding upon and inure to
the benefit of Lessee, its successors, and, to the extent assignment may be
approved by Lessor hereunder, Lessee's assigns.  The pronouns of any gender
shall include the other genders, and either the singular or the plural shall
include the other.

     All rights and remedies of Lessor under this Lease shall be cumulative
and none shall exclude any other rights or remedies allowed by law; and this
Lease is declared to be a Texas contract, and all of the terms thereof shall
be construed according to the laws of the State of Texas.

     IN TESTIMONY WHEREOF, the parties hereto have executed this lease as of
the date aforesaid.


Two Galleria Tower, Limited
  a Texas limited partnership

  By: 2GT Associates, Ltd.
      a Texas limited partnership,
      the general partner

      By: Two HDG Ltd.,
          a Texas limited partnership,
          the general partner

          By: Gerald D. Hines Interests, Ltd.
              a Texas limited partnership,
              the general partner

              By: Hines Consolidated Investments, Inc.
                  a Texas corporation,
                  the general partner

                  By:  /s/ ILLEGIBLE
                     ----------------------------------



                                      LESSOR

                        ARKWRIGHT MUTUAL INSURANCE COMPANY
                        ----------------------------------


                        By: /s/ A. D. Alexander
                           -------------------------------
                                       LESSEE


    (The attached Addendum is made a part of this Lease for all purposes.)

11
<PAGE>


                       SCHEDULE I TO LEASE AGREEMENT
                BETWEEN TWO GALLERIA TOWER LIMITED ("LESSOR")
                                     AND


                      ARKWRIGHT MUTUAL INSURANCE COMPANY
                      ----------------------------------
                                  ("LESSEE")


SCHEDULE OF STANDARD IMPROVEMENTS (quantities notwithstanding) are defined to
                                   include:


PARTITIONS

One (1) lineal foot of building standard type II partition per twelve (12)
square feet of Net Rentable Area leased outside the core area in the case of
a full floor tenant and the area within the demising walls for a tenant on a
partial floor (the "Useable Area").  All required partitions will be 5/8"
gypsum board, painted with building standard colors to be provided by
Landlord.

CEILINGS

Fissured type mineral fiber acoustical ceiling tile, 12"x 12"x 5/8" thick
mechanically suspended on a concealed grid throughout the Leased Premises.

LIGHTING FIXTURES

One (1) 2' x 4' recessed 3 tube fluorescent lighting fixture with anodized
aluminum parabolic shaped louvers, including initial lamping, per
seventy-five (75) square feet of Useable Area.

DUPLEX ELECTRIC OUTLETS

One (1) duplex wall-mounted convenience outlet for each one hundred-twenty
(120) square feet of Useable Area.

TELEPHONE OUTLETS

One (1) telephone wall outlet for each two hundred ten (210) square feet of
Useable Area.

FLOOR COVERING

Building standard commercial grade carpeting throughout the Leased Premises.

DOORS

One (1) full height, solid core door with a metal frame and lever handle
latch set hardware per three hundred (300) square feet of Useable Area.

LIGHT SWITCHES

One (1) single pole light switch for each three hundred (300) square feet of
Useable Area. Group switching will be provided in open areas.

WINDOW COVERINGS

One inch horizontal aluminum slat mini-blinds for exterior windows throughout
the Leased Premises.

FIRE SPRINKLER HEADS

Ceiling mounted fire sprinkler heads throughout the Leased Premises to conform
with light hazard occupancy for protection system design criteria up to one
sprinkler per 125 square feet of Usable Area.

12
<PAGE>

                       SCHEDULE II TO LEASE AGREEMENT
                BETWEEN TWO GALLERIA TOWER LIMITED ("LESSOR")
                                      AND

                       ARKWRIGHT MUTUAL INSURANCE COMPANY
                                   ("LESSEE")

PART A. PROCEDURE FOR DESIGN PREPARATION, PRICING APPROVAL, AND CONSTRUCTION
OF THE LEASED PREMISES.

  1.  Lessee will deliver to Lessor no later than February 20, 1989 a
detailed space plan together with the other drawings, information and written
instructions required in Part B below for any and all improvements desired by
Lessee in the leased premises (herein called "Lessee's Space Plan").

  2.  Upon receipt of the Lessee Space Plan, Lessor will review the same to
confirm that it conforms to the requirements listed in Part B below. In the
event the Lessee Space Plan does not conform to the requirements of Part B
below Lessor will return the Lessee Space Plan to Lessee for corrections.
Lessee will deliver a corrected Lessee Space Plan to Lessor no later than ten
(10) days after the initial Lessee Space PLan has been returned to Lessee by
Lessor.

  3.  After Lessor has received the final, mutually approved Lessee Space
Plan, Lessor shall promptly cause working drawings (hereafter called "Lessee
Working Drawings") of the improvements to be prepared and shall deliver them
to the Lessee for its review and approval.

  4.  Lessee shall deliver to Lessor written approval of the Lessee Working
Drawings no later than seven (7) days after Lessee receives the Lessee
Working Drawings and by said approval Lessee shall acknowledge that said
drawings correctly depict the proper layout and design for any and all
improvements desired by the Lessee for the leased premises.

  In the event the Lessee Working Drawings vary in design from the Lessee
Space Plan, and if Lessee gives Lessor written notice within seven (7) days
thereof, Lessor shall promptly cause the Lessee Working Drawings to be
corrected and Lessee will approve said corrected Working Drawings within five
(5) days of receipt.

  5.  Upon receipt of Lessee's approval of the Lessee Working Drawings,
Lessor agrees to promptly price the cost of constructing the improvements in
accordance with the Lessee Working Drawings, and to furnish Lessee a tenant
pricing letter. Lessee agrees to promptly review the tenant pricing letter
and to return the tenant pricing letter, approved and executed by Lessee,
within ten (10) days after receipt of the tenant pricing letter. It is
recognized that Lessee may order changes in design to effect cost reductions
after receipt of the tenant pricing letter. In that event, the provisions of
paragraph 6 shall apply.

  6.  Should Lessee order changes in the work after approval of Lessee's
Working Drawings or during construction, or fail to deliver Lessee's Space
Plan or approved Lessee Working Drawings and tenant pricing letter as
scheduled, Lessee shall pay to Lessor for additional expenses which will be
incurred by Lessor because of inability to proceed with the work as
scheduled, one day's rent on the Leased Premises for each day beyond the
scheduled delivery date and/or delivery dates specified in Schedule II, plus
charges for additional architectural and coordination time resulting from
these changes or delays. Such additional rent and charges shall be paid by
Lessee to Lessor within fourteen (14) days after receipt of Lessor's invoice
thereof. Payment of such sums shall not alter Lessor's right to pursue
Lessor's other remedies for default by Lessee under the Lease.

  7.  Lessor agrees to install partitions and improvements in the quantity
allowed in Schedule I within the period of time between the dates shown in
the Lease for (1) Commencement Date in Article II, paragraph 1, and (2) the
dates of delivery of Lessee's Space Plans and various approvals by Lessee in
this Schedule II, subject to extension for any reason beyond Lessor's
reasonable control and for any Lessee delay.

13
<PAGE>

PART B. MINIMUM INFORMATION REQUIRED OF LESSEE SPACE PLAN

FLOOR PLANS INDICATING

  1.  Location and type of all partitions.

  2.  Location and types of all doors -- indicate hardware and provide keying
schedule.

  3.  Location and type of glass partitions, windows and doors -- indicate
framing if not building standard.

  4.  Location of telephone equipment room accompanied by an approval of the
telephone company.

  5.  Indicate critical dimensions necessary for construction.

  6.  Location of all building standard electrical items -- outlets,
switches, telephone outlets. (Building standard lighting will be determined
by building architect.)

  7.  Location and type of all non-building standard electrical items
including lighting.

  8.  Location and type of equipment that will require special electrical
requirements. Provide manufacturers specifications for use and operation.

  9.  Location, weight per square foot and description of any exceptionally
heavy equipment, filing system, library and etc., exceeding 50 psf live load.

  10.  Requirements for special air conditioning or ventilation.

  11.  Type and color of floor covering.

  12.  Location, type and color wall covering.

  13.  Location, type and color of building standard and non-building
standard paint or finishes.

  14.  Location and specifications of all sinks and plumbing.

  15.  Location and specifications of kitchen equipment.

  16.  Plans must conform to the City of Dallas Building Fire Codes.

DETAILS SHOWING:

  1.  All millwork with verified dimensions and dimensions of all equipment
to be built-in.

  2.  Corridor entrance.

  3.  Bracing or support of special walls, glass partitions, and live loads
exceeding 50 psf, etc., if desired. If not included with the space plan, the
building architect will design, at Lessee's expense, all support or bracing
required.

14
<PAGE>

                        ADDENDUM TO LEASE AGREEMENT

1.   Lessee shall pay at lease signing the first four month's rent in the 
     amount of $29,527.08.

2.   Reference Section II, page 2, paragraph 3 of the Lease Agreement. Annual 
     Base Rental shall be as follows:

<TABLE>
<S>                    <C>
     Months 1 - 8      $ 3.96 per square foot of NRA
     Months 9 - 20       9.50 per square foot of NRA
     Months 21 - 36     16.00 per square foot of NRA
     Years 4 - 7        17.00 per square foot of NRA
     Years 8 - 10       18.00 per square foot of NRA
</TABLE>

3.   Lessee shall be granted a $2.00 per square foot of NRA moving allowance, 
     payable within thirty (30) days following occupancy by Lessee.

4.   Lessee shall be granted a $15.00 per square foot of NRA construction 
     allowance (the "Construction Allowance") for demolition and buildout.  
     In the event such demolition and buildout costs exceed the Construction 
     Allowance (the "Excess Costs") such Excess Costs, not to exceed $5.00 
     per square foot of NRA, shall be paid by Lessee as additional Base 
     Rental to yield a fully amortized 10% (ten percent) return to the Lessor 
     on the Excess Costs from the 21st through the 120th month of the Lease 
     term. If the Construction Allowance is not completely utilized in 
     demolition and buildout, any remaining monies ("Savings") will be 
     applied as a Base Rental reduction based on a 10% discount rate from the 
     21st through the 120th month of the Lease term.  Such increase or 
     decrease (as the case may be) in Base Rental shall be calculated as 
     follows (the "Base Rental Adjustment Formula"): For each $1.00 per 
     square foot of NRA of Excess Costs or Savings, as the case may be, the 
     Base Rental rate shall be increased or decreased by $.21 per square foot 
     of NRA per year from the 21st through the 120th month of the Lease term. 
     Such increase or decrease in the Base Rental rate shall be proportional 
     to the ratio of the Excess Costs or Savings, as the case may be, per 
     square foot of NRA to $1.00 per square foot of NRA.

5.   As long as Lessee is not in default in the performance of its covenants 
     under this lease, Lessee is hereby granted the option to renew the term 
     of this Lease for a period of five (5) additional years ("Renewal 
     Term"), to commence at the expiration of the term of this Lease.  Lessee 
     shall exercise its option to renew by delivering written notice of such 
     election to Lessor at least nine (9) months prior to the expiration of 
     the term of this Lease.  The renewal of this Lease shall be upon the 
     same terms and conditions of this Lease, except (a) the Base Rental and 
     Parking Charge during the Renewal Term shall be at the prevailing market 
     Base 

<PAGE>
                                     2

     Rental and Parking Charge (similarly defined) at the time the Renewal 
     Term commences.  However, in no event shall such Base Rental be less 
     than Lessee's Base Rental plus all increases for Base Rental Adjustments 
     in effect for the calendar year in which the Renewal Term commences; (b) 
     Lessee shall have no option to renew this Lease beyond the expiration of 
     the Renewal Term; (c) Lessee shall not have the right to assign its 
     renewal rights to any sublessee of the Leased Premises or assignee of 
     the Lease, excepting any subsidiary or associate company; and (d) the 
     leasehold improvements will be provided in their then existing condition 
     (on an "as is" basis) at the time the Renewal Term commences.  Although 
     not required, if Lessor and Lessee mutually agree on a finish out 
     allowance, such allowance will be amortized over the renewal term at 
     twelve percent (12%) interest.

6.   Lessee shall have the right to submit three construction bids from 
     contractors previously approved by Lessor in addition to the bids 
     received by Lessor.  If Lessee's contractor has the lowest responsible 
     bid; Lessee shall be allowed to use that contractor, provided such 
     contractor uses Lessor's required subcontractors for the electrical, 
     mechanical and plumbing work.  Lessor's subcontractors for said 
     electrical, mechanical and plumbing work must have submitted a bid 
     within 7% of Lessee's most competitive bid.

7.   Lessee shall be granted a $1.75 per square foot of NRA space planning 
     allowance for the initial 22,369 square feet payable upon receipt of 
     invoice from Lessee.  Any unused monies shall be credited toward Base 
     Rental over the term of the Lease in accordance with the Base Rental 
     Adjustment Formula for Savings.

8.   Lessor shall pay the initiation costs only for seven (7) Fitness 
     memberships to the University Club.

9.   Lessor shall complete a construction "punch list" within ten (10) days 
     of Lessee's occupancy of the Lease Premised.  Lessor agrees to use 
     reasonable efforts to complete all work outlined on said punch list 
     within thirty (30) days after completion of the punch list, provided 
     there are no change orders requested by Lessee which would cause delays 
     beyond the 30 days.

10.  As long as Lessee is not in default in the performance of its covenants 
     under this Lease, Lessee shall have a one time option to terminate this 
     Lease (the "Termination Option") effective as of the expiration of the 
     sixtieth (60th) calendar month of the term of this Lease, provided 
     Lessee notifies Lessor in writing on or before the expiration of the 
     fifty first (51st) calendar month of the term of this Lease of such 
     intent and such notice is accompanied by a cashier's or certified check 
     made payable to Lessor in the amount of the Termination Payment 
     (hereinafter defined).  As used herein, the term "Termination Payment" 
     means the sum of $475,000.00 with respect to the original 22,369 square 
     feet of NRA of the Leased Premises; provided, however, (i) in the event 
     the Leased Premises, at the time of the exercise of the Termination 

<PAGE>
                                     3

     Option, exceeds 22,369 square feet of NRA, the Termination Payment shall 
     be increased by a sum equal to Lessor's unamortized Lease Costs 
     (hereinafter defined) for such additional NRA.  As used herein, the term 
     "Lease Costs" mean all costs incurred by Lessor in connection with such 
     additional NRA, including without limitation, all finishout costs and 
     lease commissions (both external and internal) plus 12% (twelve percent) 
     per annum self amortizing return from date of expenditure through the 
     original expiration date of this Lease on such costs; and (ii) in the 
     event the Base Rental, at the time of the exercise of the Termination 
     Option, has been adjusted by the Base Rental Adjustment Formula pursuant 
     to paragraph 4 or 7 of this Addendum, the Termination Payment shall be 
     adjusted by a sum equal to the unamortized Excess Costs or Savings, as 
     the case may be based on a 10% return to the Lessor.

11.  If Lessee does not exercise the Termination Option at the end of the 
     fifty first (51st) month of occupancy as set out above, Lessee shall be 
     granted an additional $55,922.50 refurbishment allowance upon written 
     request to Lessor.

12.  Lessor hereby grants Lessee an ongoing "Right of First Refusal", on all 
     or part of the 20th floor of Two Galleria Tower as outlined on attached 
     Exhibit C (approximately 22,248 square feet of net rentable area) which 
     shall be available August 1, 1991, subject to Southland Corporation NOT 
     exercising its renewal option.  If Southland Corporation's lease 
     agreement terminates for any reason prior to August 1, 1991, the Right 
     of First Refusal space shall become available as of such termination or 
     November 1, 1990, whichever is later, but in no event shall the space be 
     available prior to November 1, 1990 to any other tenant.  Lessee is also 
     granted ongoing Rights of First Refusal on approximately 2,500 square 
     feet of NRA on the 4th floor (Exhibit D) and 4,335 square feet of NRA on 
     the 5th floor (Exhibit E) which are currently vacant. Provided Lessee is 
     not in default, Lessee may exercise the Right of First Refusal upon the 
     following terms:

     a.   The lease term for such Right of First Refusal area shall be 
          coterminous with the expiration date of this Lease Agreement.

     b.   After written notification from Lessor to Lessee that Lessor has 
          another lessee desirous of leasing said space, Lessee shall have 
          seven (7) days or five (5) working days after receipt from an 
          overnight carrier, whichever is greater, to exercise its Right of 
          First Refusal by giving written notice to Lessor of its intent to 
          exercise said option.

     c.   The Base Rental for the Right of First Refusal space leased by 
          Lessee shall be at the same Base Rental then in effect per the 
          schedule outlined in paragraph 2 of this Addendum plus all Base 
          Rental Adjustments in effect pursuant to the Lease if exercised 
          before the 61st month of the lease term. Thereafter, the Base 
          Rental shall be at the then prevailing market rate, but in no event 
          shall such Base Rental be less than Lessee's Base Rental per the 
          schedule outlined in 

<PAGE>
                                     4

          paragraph 2 of this Addendum plus all Base Rental Adjustments In 
          effect pursuant to this Lease.

     d.   In the event Lessee exercises a Right of First Refusal pursuant to 
          the terms hereof, Lessee shall be granted a $15.00 per square foot 
          of NRA improvement allowance if additional space is leased within 
          the first 3 years of Lessee's lease term and $12.00 per square foot 
          of NRA if exercised during years 4 and 5 of the lease term.  Right 
          of First Refusal space shall be taken on an "as is" basis anytime 
          thereafter.  Although not required, if Lessor and Lessee mutually 
          agree on a finish out allowance after year 5 of the lease term, 
          such allowance will be amortized over the remaining lease term at 
          twelve percent (12%) interest.

          Any additional improvement dollars expended by Lessor on Right of 
          First Refusal space during the first five years of lease term shall 
          be paid by Lessee as additional Base Rental by fully amortizing the 
          additional costs at 12% over the original lease term.

     e.   Lessor shall not be liable for failure to give possession of said 
          Right of First Refusal Space by reason of the holding over or 
          retention of possession of any previous lessee, lessees or 
          occupants of same, nor shall such failure impair the validity of 
          this Lease, nor extend the term hereof, but the rent for such Right 
          of First Refusal Space shall be abated until possession thereof is 
          delivered to Lessee.  However, Lessor does covenant that it will 
          use reasonable diligence to deliver possession of such Right of 
          First Refusal Space to Lessee in a timely manner.

     f.   Each ongoing Right of First Refusal shall terminate when said lease 
          premises are leased to another lessee or upon the termination of 
          Lessee's Lease Agreement, whichever occurs first.

     g.   The Right of First Refusal shall apply only to each Right of First 
          Refusal space in its entirety as offered to another potential 
          lessee, and not to any lesser portion thereof unless Lessor is 
          willing to lease a lesser portion thereof to such other lessee, in 
          which event the Right of First Refusal shall apply to such lesser 
          portion.

     h.   Lessee shall be granted free parking at the ratio of 1 space per 
          280 square feet of NRA for the Right of First Refusal space if such 
          space is taken during the first five (5) years of the lease term.  
          Anytime after the fifth year of occupancy, parking shall be 
          provided at the then prevailing market rate at the same ratio as 
          stated above.

13.  Lessor agrees that it will not extend a sublessee of Southland 
     Corporation which may occupy said 20th floor lease premises beyond 
     August 1, 1991.  However, if Southland Corporation 

<PAGE>
                                     5

     chooses to renew its lease term under renewal rights presently contained 
     in their lease for its own occupancy or that of one of its subsidiaries 
     or sublessees, Lessor must honor the renewal.

14.  (Reference Section IV, page 7, paragraph 11.) Lessor warrants and 
     represents to Lessee that as of the date hereof, the Building is not 
     subject to any lien or encumbrance except: (1) lien for taxes not yet 
     due and payable and (2) easements not containing any power of sale or 
     right of foreclosure.  This Lease shall automatically become subject and 
     subordinate to any first lien mortgage or deed of trust ("Lessor's 
     Mortgage") which may hereafter encumber the Building of which the Leased 
     Premises form a part and to all renewals, modifications, consolidations, 
     replacements and extensions thereof provided that Lessor and the 
     mortgagee or lender ("Lessor's Mortgagee") shall have executed and 
     delivered to tenant a Recognition, non-disturbance and attornment 
     agreement in form and substance reasonably acceptable to Lessee.  Such 
     agreement at a minimum shall provide that notwithstanding any 
     enforcement by the trustee or the beneficiary under Lessor's Mortgage, 
     that Lessee's occupancy of the Lease Premises shall not be disturbed so 
     long as Lessee is not in default under this Lease.  In the event of the 
     enforcement by the trustee or Lessor's Mortgagee, the successor in 
     interest shall not be bound by (i) any payment of rent or additional 
     rent for more than one month in advance except prepayments in the nature 
     of security for the performance by Lessee of its obligations under this 
     lease, (ii) such other unperformed obligations of Lessor only requiring 
     Lessor to pay Lessee a sum of money (for example, return of an 
     overcharge of additional rent), or (iii) any amendment or modification 
     of this Lease made (a) after the date Lessee is informed in writing of 
     the name and address of Lessor's Mortgagee, and (b) without the written 
     consent of such trustee or such beneficiary or such successor in 
     interest.  However, Lessor's Mortgagee shall be responsible for 
     non-monetary obligations (i.e. maintenance) of Lessor yet to be 
     performed by Lessor at the time Mortgagee enforces its right under the 
     mortgage or deed of trust.

Signed for Identification:


/s/ Illegible
- ----------------------------------
Lessor


/s/ A.D. Alexander
- ----------------------------------
Lessee
<PAGE>

                          FIRST AMENDMENT TO LEASE AGREEMENT

     This First Amendment to Lease Agreement (the "Amendment") is made and
entered into as of the 17th day of March, 1989 by and between Two Galleria
Tower Limited ("Lessor") and Arkwright Mutual Insurance Company ("Lessee").

                                       RECITALS

     A.   Lessor and Lessee entered into that certain Lease Agreement (the
"Lease") dated January 25, 1989, covering approximately 22,369 square feet of
Net Rentable Area on the 19th floor of the building known as Two Galleria Tower,
13455 Noel Road, Dallas, Texas (the "Leased Premises").

     B.   The cost of construction of the Leased Premises exceeded the
Construction Allowance by the sum of $1.20 per square foot of Net Rentable Area.

     C.   Lessor and Lessee desire to adjust the Base Rental for the Leased
Premises pursuant to the Base Rental Adjustment Formula as set out in paragraph
4 of the Addendum to the Lease.

     NOW, THEREFORE, for and in consideration of the mutual covenants and
agreements herein contained and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, Lessor and Lessee
hereby agree as follows:

     1.   The capitalized terms used herein shall have the same meaning as
ascribed to them in the Lease.

     2.   In accordance with the Base Rental Adjustment Formula set out in
paragraph 4 of the Addendum to the Lease, the Base Rental 88 provided in
paragraph 2 of the Addendum to the Lease is hereby amended by increasing the
Base Rental by the sum of $.25 per square foot of Net Rentable Area for months
21 through 120 of the Lease Term.  The increased annual Base Rental for such
period shall be as follows:

     Months 21 through 36         $16.25 per square foot of NRA

     Years 4 through 7            $17.25 per square foot of NRA

     Years 8 through 10           $18.25 per square foot of NRA

     3.   Except as hereby expressly amended, the Lease shall continue in full
force and affect.

                                    -1-
<PAGE>

     IN WITNESS WHEREOF, Lessor and Lessee have executed this Amendment in
multiple original counterparts as of the date and year first above written.

     LESSOR:

     Two Galleria Tower Limited,
     a Texas limited partnership

     By:  Two GT Associates, Ltd.,
          a Texas limited partnership,
          the general partner

          By:  Two HDG, Ltd.,
               a Texas limited partnership,
               the general partner

               By:  Gerald D. Hines Interests, Ltd.,
                    a Texas limited partnership,
                    the general partner

                    By:  Hines Consolidated Investments, Inc.,
                         a Texas corporation,
                         the general partner


                         By: /s/ Illegible
                            ------------------------------------

     LESSEE:

     Arkwright Mutual Insurance Company,
     a _____________________ corporation


     By: /s/ A. D. Alexander
        ---------------------------------
     Title: Sr. VP & Area Mgr
           ------------------------------

                                       -2-

<PAGE>
                                       
                          LOAN AND SECURITY AGREEMENT

     THIS LOAN AND SECURITY AGREEMENT ("Agreement") made and entered into as 
of the day of acceptance by and between the undersigned Debtor and BANK ONE, 
TEXAS, NATIONAL ASSOCIATION:

                                   WITNESSETH

     1.   DEFINITIONS. The following definitions shall apply:

          (a)  "ACCOUNTS ADVANCE RATE" shall mean the percentage of Debtor's
     Eligible Accounts that may be used in determining the Borrowing Base. The
     Accounts Advance Rate for any month shall be the percentage set forth below
     opposite the applicable Dilution Percentage as determined by Bank from time
     to time:

<TABLE>
          Dilution Percentage      Accounts Advance Rate
          -------------------      ---------------------
<S>                                <C>
               0 - 5.0%                 85%
               5.1% - 8.0%              80%
               8.1% - 10.0%             75%
               10.0% and higher         to be determined in Bank's sole discretion
</TABLE>

          (b)  "ADJUSTED NET INCOME" means, with respect to any period, net
     earnings (after reduction for federal income taxes) of Debtor for such
     period, determined in accordance with GAAP excluding, however,
     extraordinary items, including, without limitation, (i) any net gain or
     loss during such period arising from the sale, exchange or other
     disposition of capital assets and (ii) any write-up or write-down of
     assets.

          (c)  "AFFILIATE" shall mean any individual or entity directly or
     indirectly controlling, controlled by, or under common control with, or
     otherwise related to Debtor or any Obligated Party and shall include but
     not be limited to any partnership, joint venture, joint stock company,
     corporation, parent company or subsidiary or other company or person in
     which any Obligated Party or any person related to any Obligated Party by
     blood, adoption or marriage no more remotely than two degrees of
     relationship shall own, directly or indirectly, of record or beneficially,
     or hold, directly or indirectly, the power to control the vote of, more
     than 10% of the voting stock of, or other equity interest in, such entity.

          (d)  "AVERAGE DAILY AVAILABILITY" for any three consecutive months
     shall mean the amount obtained by, first, adding the difference, as of the
     end of each day during such three months, between (i) the lesser of the
     Revolving Line or the Borrowing Base and (ii) the sum of (a) the unpaid
     balance of Revolving Loans owing by Debtor to Lender and (b) the Letter of

LOAN AND SECURITY AGREEMENT - PAGE 1
<PAGE>

     Credit Exposure and, then, by dividing such sum by the number of days in
     such three month period.

          (e)  "BANK" shall mean BANK ONE, TEXAS, NATIONAL ASSOCIATION, of
     Dallas, Texas, whose mailing address is 1717 Main Street, Dallas, Texas
     75201.

          (f)  "BORROWER" shall mean Debtor and any person or entity specified
     in Addendum I attached hereto and incorporated herein by reference, or any
     of them.

          (g)  "BORROWING BASE" shall mean, as of any date of determination, the
     lesser of (i) the sum of $1,500,000 LESS the Letter of Credit Exposure, or
     (ii) the sum of (1) the product of (A) the Accounts Advance Rate and (B)
     Debtor's Eligible Accounts LESS (2) the Letter of Credit Exposure, LESS (3)
     the Reserve, all determined as of such date of determination.

          (h)  "BUSINESS DAY" shall mean any calendar day except Saturday,
     Sunday and those legal public holidays specified in 5 U.S.C. Section
     6103(a), as may be amended from time to time.

          (i)  "CAPITAL EXPENDITURE" means any expenditure or liability (other
     than capitalized interest) by or of a Debtor which would be capitalized in
     accordance with GAAP.

          (j)  "CODE" shall mean the Uniform Commercial Code as in effect in the
     State of Texas on the date of this Agreement or as it may hereafter be
     amended from time to time.

          (k)  "COLLATERAL" shall mean all that certain property described in
     Addendum II attached hereto and incorporated herein by reference.

          (l)  "CONTRACT RATE" shall mean a rate calculated on the basis of
     actual days elapsed but computed as if each year consisted of 360 days,
     equal to the sum of (i) the Base Rate (the "BASE RATE") of interest as
     established from time to time by the Bank (which may not be the lowest,
     best or most favorable rate of interest which Bank may charge on loans to
     its customers), plus (ii) two percent (2.0%) per annum.

          (m)  "DEBTOR" shall mean CapRock Communications Corp., a Texas
     corporation, whose chief executive office is located at Two Galleria Tower,
     13455 Noel Road, Suite 1925, LB 46, Dallas, Texas, 75240-6638.

          (n)  "DEFAULT" means any of the events specified in SECTION 14,
     regardless of whether there shall have occurred any passage of time or
     giving of notice or both that would be necessary in order to constitute
     such event an Event of Default.

          (o)  "DEFAULT RATE" shall mean at the time in question a per annum
     rate equal to the lesser of (i) the Base Rate then in effect plus four
     percent (4.0%) or (ii) the Maximum Rate.

          (p)  "DILUTION PERCENTAGE" means, as of any date of determination, the
     ratio of (i) the sum of (a) all non-cash credits given by Debtor to account
     debtors or obtained by account 

LOAN AND SECURITY AGREEMENT - PAGE 2
<PAGE>

     debtors during the 12-month period ending on the date of determination 
     plus (b) bad debt expense incurred or accrued by Debtor during such 
     period to (ii) the aggregate face amount of all accounts receivable 
     generated by Debtor during such 12-month period.

          (q)  "DISTRIBUTIONS" means, in respect of any corporation, cash
     distributions or dividends or any other distributions of property on, or in
     respect of, any class of capital stock of such corporation, except for
     distributions made solely in shares of stock of the same class, and means,
     in respect of any partnership or other unincorporated entity, cash
     distributions or any other distributions of property on, or in respect of,
     any capital or profits interest in such partnership or other entity.

          (r)  "ELIGIBLE ACCOUNTS" shall mean, as of any date, all accounts
     receivable of Debtor which constitute accounts receivable arising from the
     rendering of services or the sale of goods by Debtor to Persons other than
     individual consumers, other than the following accounts: (a) each account
     which remains unpaid more than ninety (90) days after its original invoice
     date; (b) an account which is not due and payable within thirty (30) days
     after its invoice date; (c) all accounts owing by a single account debtor
     if twenty percent (20%) or more of the then balance of all accounts owing
     by said account debtor to Debtor is ineligible pursuant to clause (a)
     and/or (b) above; (d) accounts with respect to which the account debtor is
     a shareholder, partner, director, officer, employee, agent or Affiliate of
     Debtor, or an Affiliate of a Guarantor, (e) accounts with respect to which
     payment by the account debtor is or may be conditional or accounts of a
     similar or like arrangement; (f) accounts with respect to which the account
     debtor is not a resident or citizen of or otherwise located in the
     continental United States of America, or with respect to which the account
     debtor is not subject to service of process in the continental United
     States of America, unless such account is backed in full by an irrevocable
     letter of credit in the form and substance satisfactory to the Bank issued
     by a domestic commercial bank acceptable to the Bank, but in the event of
     such credit enhancement, such accounts rendered Eligible Accounts thereby
     shall not exceed an aggregate $50,000; (g) accounts in excess of a total
     amount of Fifty Thousand Dollars ($50,000) (for all government accounts)
     with respect to which the account debtor is the United States of America,
     any state of the United States or any other governmental body or any
     department, agency or instrumentality of any of the foregoing unless such
     accounts are duly assigned to the Bank in compliance with all applicable
     governmental requirements (including, without limitation, the Federal
     Assignment of Claims Act of 1940, as amended, if applicable) so that the
     Bank is recognized by the account debtor to have all of the rights of an
     assignee of such accounts; (h) accounts with respect to which Debtor is or
     may become liable to the account debtor for goods sold or services rendered
     or deposits received by such account debtor to Debtor, but only to the
     extent of Debtor's then aggregate liability to such account debtor (i.e.
     the excess of the aggregate face amount of accounts of such account debtor
     to the Debtor over the aggregate liability of Debtor to such account debtor
     shall constitute an Eligible Account unless otherwise excepted under the
     terms of this section); (i) accounts with respect to which the services
     performed giving rise thereto have not been completed and accepted as
     satisfactory by the account debtor thereof, (j) accounts which are not
     invoiced (and dated as of such date) and sent to the account debtor thereof
     concurrently with or not later than twenty (20) days after shipment or
     delivery to or acceptance by the account debtor of goods giving rise
     thereto or the performance of the services or sale of 

LOAN AND SECURITY AGREEMENT - PAGE 3
<PAGE>

     goods giving rise thereto; (k) accounts as to which the Bank, at any time 
     or times hereafter, determines, in good faith, that the prospect of 
     payment or performance by the account debtor is or will be impaired in any 
     material respect; (l) accounts of an account debtor to the extent, but 
     only to the extent, that the same exceed a credit limit determined by the 
     Bank in its reasonable discretion, at any time or times hereafter; (m) 
     accounts with respect to which the account debtor is located in the State 
     of New Jersey, the State of Minnesota or the State of Indiana; provided, 
     however, that such restriction shall not apply if such Borrower (i) has 
     filed and has effective (A) in respect of account debtors located in the 
     State of New Jersey, a Notice of Business Activity Report with the New 
     Jersey division of Taxation for the then current year, (B) in respect of 
     account debtors located in the State of Minnesota, a Minnesota Business 
     Activity Report with the Minnesota Department of Revenue for the then 
     current year or (C) in respect of account debtors located in the State of 
     Indiana, a Business activities Report with the Indiana Department of 
     Revenue for the then current year, as applicable, or (ii) is otherwise 
     exempt from such reporting requirements under the laws of such State(s); 
     (n) accounts which are not subject to a first priority perfected security 
     interest in favor of the Bank; and (o) that portion of an account balance 
     owed by a single account debtor which exceeds twenty-five percent (25%) 
     of total accounts receivable otherwise deemed eligible hereunder, unless 
     waived in writing by Bank.

          (s)  "FIXED CHARGE COVERAGE RATIO" means, as of the date of
     determination, the ratio of (i) the sum of Adjusted Net Income for the
     portion of the fiscal year through such date of determination (the
     "PERIOD"), plus depreciation and amortization and income taxes and interest
     expense deducted in determining such Adjusted Net Income, to (ii) the sum
     of regularly scheduled, current maturities of long-term debt, as classified
     according to GAAP, for the Period plus current maturities of indebtedness
     owed to Sanwa Business Credit Corp., plus Capital Expenditures made during
     the Period and not financed plus interest and taxes deducted in calculating
     Adjusted Net Income for the Period.

          (t)  "GAAP" means generally accepted accounting principles and
     practices, consistently applied.

          (u)  "GUARANTORS" means, collectively, Jere Thompson, Jr., Timothy
     Terrell, Scott Roberts and Timothy Rogers, and "GUARANTOR" means any of
     such individuals.

          (v)  "INDEMNIFIED PERSONS" means, collectively, Secured Party and its
     officers, directors, shareholders, employees, agents, attorneys and
     representatives, and any Person owned or controlled by, or which owns or
     controls or is under common control or is otherwise affiliated with,
     Secured Party, and any other Person, if any, who acquires a portion of the
     Collateral in any manner through Secured Party's exercise of rights and
     remedies under the Loan Documents.

          (w)  "INTEREST COVERAGE RATIO" means, as of any date of determination,
     the ratio of (i) fiscal year-to-date Adjusted Net Income, plus fiscal 
     year-to-date interest expense and income taxes deducted in determining such
     Adjusted Net Income, to (ii) fiscal year-to-date interest 

LOAN AND SECURITY AGREEMENT - PAGE 4
<PAGE>

     expense (including Subordinated Debt interest) deducted in determining such
     Adjusted Net Income.

          (x)  "LETTER OF CREDIT" means, individually, any letter of credit
     issued by Secured Party pursuant hereto and Secured Party's currently
     issued irrevocable standby letter of credit no. 14101 dated December 18,
     1995, issued to Thrifty Call Services, Inc. as beneficiary in the amount of
     $200,000, and any renewal or extension of any of the foregoing, and
     "LETTERS OF CREDIT" means all such letters of credit collectively.

          (y)  "LETTER OF CREDIT EXPOSURE" means, at any time, the aggregate
     undrawn maximum face amount of all Letters of Credit outstanding at such
     time.

          (z)  "LETTER OF CREDIT OBLIGATIONS" means any obligations of Borrower
     under this Agreement in connection with the Letters of Credit.

          (aa) "LOAN DOCUMENTS" shall mean this Agreement and all other
     documents and instruments executed in connection herewith (including
     without limitation, all notes, documents, agreements and instruments
     evidencing, securing, governing, guaranteeing and/or pertaining to the
     indebtedness created or arising hereunder and all documents and agreements
     relating to any Letter of Credit), as the same may be amended, restated,
     renewed, extended, or otherwise modified.

          (bb) "MATURITY DATE" shall mean February 28, 1997.

          (cc) "MAXIMUM RATE" shall mean at any particular time in question the
     maximum rate of interest which, under applicable law (including federal
     laws), may then be charged on the sums advanced hereunder. If applicable
     law ceases to provide for such a maximum rate of interest, the Maximum Rate
     shall be equal to eighteen percent (18%) per annum.

          (dd) "OBLIGATED PARTY" shall mean any party other than Borrower who
     secures, guarantees and/or is otherwise obligated to pay all or any portion
     of the Obligations.

          (ee) "OBLIGATIONS" shall mean (i) all loans or other advances made by
     Secured Party to Borrower pursuant to this Agreement or otherwise and all
     Letter of Credit Obligations; (ii) all future advances or other value, of
     whatever class or for whatever purpose, at any time hereafter made or given
     by Secured Party to Borrower, whether or not the advances or value are
     given pursuant to commitment and whether or not Borrower is indebted to
     Secured Party at the time of such advance; (iii) any and all other debts,
     liabilities and duties of every kind and character of Borrower to Secured
     Party, whether now or hereafter existing, and regardless of whether such
     present or future debts, liabilities or duties are direct or indirect,
     primary or secondary, joint, several, or joint and several, fixed or
     contingent, and regardless of whether such present or future debts,
     liabilities or duties may, prior to their acquisition by Secured Party, be
     or have been payable to, or be or have been in favor of, some other person
     or have been acquired by Secured Party in a transaction with one other than
     Borrower (it being contemplated that Secured Party may make such
     acquisitions from others), howsoever such indebtedness shall 

LOAN AND SECURITY AGREEMENT - PAGE 5
<PAGE>

     arise or be incurred or evidenced; (iv) interest on all of the debts, 
     liabilities and duties set forth in (i), (ii) and (iii) above; and (v) any 
     and all renewals and extensions of such debts, liabilities and duties set 
     forth in (i), (ii), (iii) and (iv) above, or any part thereof.

          (ff) "PERSON" means an individual, corporation, partnership, joint
     venture, association, governmental entity, court or any other entity.

          (gg) "RESERVE" at any time shall mean an amount from time to time
     established by Secured Party in its discretion as a reserve in reduction of
     the Borrowing Base in respect of contingencies or other potential factors
     which, in the event they should occur, could adversely affect or otherwise
     reduce the anticipated amount of timely collections in payment of Eligible
     Accounts or the anticipated amount of proceeds which could be realized upon
     liquidation of Eligible Inventory. The "Reserve," if any from time to time,
     does not represent cash funds.

          (hh) "REVOLVING LINE" means $1,500,000.

          (ii) "REVOLVING LOANS" shall mean all loans and advances made by
     Secured Party to Debtor pursuant to SECTION 2 herein.

          (jj) "SECURED PARTY" shall mean the Bank, and its successors and
     assigns, including specifically, any party to whom the Bank, or its
     successors or assigns, may assign its rights and interests under this
     Agreement.

          (kk) "SUBORDINATED DEBT" means any indebtedness of Debtor to any
     creditor other than Secured Party that is subordinated to the Obligations
     pursuant to a subordination agreement between Secured Party and such other
     creditor, in form and substance acceptable to Secured Party.

          (ll) "TANGIBLE LEVERAGE RATIO" means the ratio of Total Liabilities to
     Tangible Net Worth.

          (mm) "TANGIBLE NET WORTH" means, as of any date, the total
     stockholders' equity (including additional paid-in capital and retained
     earnings) which would appear on a balance sheet of Debtor prepared as of
     such date in accordance with GAAP, plus the sum of (i) any LIFO reserve and
     (ii) the lesser of investments in subsidiaries or the net book value of
     subsidiaries, plus the aggregate principal amount of Subordinated Debt LESS
     the aggregate book value of intangible assets shown on such balance sheet,
     and LESS investments in and amounts due from Affiliates.

          (nn) "TOTAL LIABILITIES" means, as of any date, all liabilities and
     indebtedness which would be reflected on a balance sheet prepared in
     accordance with GAAP, of Debtor less Subordinated Debt.


All words and phrases used herein which are expressly defined in Section 1.201
or in Chapter 9 of the Code shall have the meaning provided for therein. Other
such words and phrases defined elsewhere 

LOAN AND SECURITY AGREEMENT - PAGE 6
<PAGE>

in the Code shall have the meanings specified therein except to the extent 
such meaning is inconsistent with a definition in Section 1.201 or Chapter 9.

     2.   REVOLVING LOANS AND LETTERS OF CREDIT.

     (a)  REVOLVING LOANS. Subject to the terms and provisions hereof and 
provided that no Default or Event of Default has occurred and is continuing 
and that the aggregate principal outstanding on the Revolving Loans does not 
then exceed the Borrowing Base, Secured Party shall, from time to time, make 
loans to Debtor secured by the Collateral and evidenced by one or more 
promissory notes in the form of EXHIBIT A hereto. The maximum aggregate 
principal balance outstanding at any one time under this SECTION 2(a) shall 
not exceed the Borrowing Base as then determined by the Bank in its sole 
discretion. If at any time or times the aggregate principal outstanding on 
the Revolving Loans exceeds the Borrowing Base, then Borrower shall upon 
demand pay all of such excess. Unless accelerated in accordance with the 
terms hereof, all outstanding principal and unpaid accrued interest 
constituting Revolving Loans shall be due and payable in full on the Maturity 
Date.

     (b)  LETTERS OF CREDIT. Subject to the terms hereof, Secured Party will, 
from time to time, upon request by Debtor, issue Letters of Credit provided 
that (i) aggregate Letter of Credit Exposure at the time (including the 
amount of the requested Letter of Credit) does not exceed $250,000, (ii) 
Debtor would be entitled to an advance under SECTION 2(a) in the amount of 
the requested Letter of Credit, (iii) the Letter of Credit is a commercial or 
standby letter of credit to facilitate Debtor's ordinary course of business 
and (iv) each Letter of Credit issued hereunder shall terminate on or prior 
to a date that is ten (10) Business Days prior to the Maturity Date. As a 
condition to the issuance of any Letter of Credit, Debtor shall execute and 
deliver Secured Party's customary Letter of Credit application and shall pay 
to Secured Party, in addition to clerical issuance and transaction costs 
charged by Secured Party, a Letter of Credit fee in an amount equal to one 
and one-half percent (1.5%) per annum (prorated for periods of less than one 
year) of the face amount thereof Each Letter of Credit shall be issued in 
form satisfactory to Secured Party. The amount, if any, from time to time 
funded by Secured Party for the account of Debtor under any Letter of Credit 
shall be reimbursed and paid by Debtor to Secured Party ON DEMAND, or, at 
Secured Party's option, charged to Debtor as a Revolving Loan, whether or not 
Debtor would then be entitled to an advance for such amount pursuant to 
SECTION 2(a).

     3.   SECURITY INTEREST. As security for all Obligations, Debtor, for 
value received, hereby grants to Secured Party a continuing security interest 
in the Collateral which it now owns or holds or hereafter owns, holds or 
acquires. Secured Party may hold for security any property, securities, 
guaranties or monies of Debtor which may at any time come into the possession 
of Secured Party and may apply same or the proceeds thereof to payment of any 
Obligations, as the Secured Party shall elect, which at any time then or 
thereafter are owing to Secured Party. To the extent that a security interest 
in the inventory and/or the equipment of Debtor is granted to Secured Party 
hereunder, such security interest shall continue through all stages of 
manufacture and shall, without further act, attach to the accounts or other 
proceeds resulting from the sale or other disposition thereof and to all such 
Collateral as may be returned to Debtor by its account debtors. The 
designation of proceeds does not authorize 

LOAN AND SECURITY AGREEMENT - PAGE 7
<PAGE>

Debtor to sell, transfer or otherwise convey any of the Collateral except 
finished goods inventory intended for sale in the ordinary course of Debtor's 
business.

     4.   INTEREST. (a) CONTRACT RATE. Debtor agrees to pay, in addition to 
all other amounts payable hereunder, interest on the principal amount of all 
sums now or hereafter loaned or advanced by Secured Party to Debtor 
hereunder, irrespective of whether such indebtedness of Debtor to Secured 
Party be evidenced by promissory notes, drafts, acceptances or otherwise, at 
a fluctuating rate per annum from the date any such indebtedness is created 
in favor of Secured Party until maturity, which shall from day to day be 
equal to the lesser of (a) the Maximum Rate, or (b) the Contract Rate, each 
change in the rate to be charged hereunder to be effective without notice to 
Debtor on the effective date of each change in the Maximum Rate or the Base 
Rate, as the case may be; provided, however, that if at any time the Contract 
Rate shall exceed the Maximum Rate, thereby causing the interest on the 
Revolving Loans to be limited to the Maximum Rate as provided in (a) 
preceding, then any subsequent reduction in the Contract Rate shall not 
reduce the rate of interest on the Revolving Loans below the Maximum Rate 
until the total amount of interest accrued on the Revolving Loans equals the 
amount of interest which would have accrued thereon if the rate specified in 
(b) preceding had at all times been in effect.

     (b)  RATE REDUCTION FOR REVOLVING LOANS.

     (1) The Contract Rate shall be reduced by one-half of one percent (0.5%)
     per annum in the event that Borrower achieves the following performance
     factors:

                    (A)  No Default or Event of Default has occurred and is
               continuing;

                    (B)  The Average Daily Availability of Debtor for the three
               consecutive months immediately preceding the effective date of
               reduction shall equal or exceed $100,000;

                    (C)  The Debtor achieves positive net income for each of the
               six consecutive months immediately preceding the effective date
               of the reduction.

     (2)  Initial qualification for a rate reduction provided above shall be
     measured and determined according to the monthly consolidated financial
     statements delivered to Secured Party under SECTION 11(q). Any such
     reduction shall be deemed effective as of the first day of the calendar
     month next following the calendar month in which such financial statements
     are delivered to Secured Party.

     (c) GENERAL. Interest accrued hereunder shall be payable monthly on the 
first day of each calendar month. To the extent that any interest due by 
Debtor is not laid on the first day of each month, Secured Party may, at its 
option, add such accrued interest to the principal indebtedness due by Debtor 
under the Revolving Loans. After the occurrence and during the continuance of 
an Event of Default, the outstanding principal balance of the Revolving Loans 
shall bear interest at a rate of interest equal to the Default Rate. 
Notwithstanding any provisions contained in this Agreement or in any of the 
other Loan Documents, the Secured Party shall never be entitled to receive, 
collect or apply, as 

LOAN AND SECURITY AGREEMENT - PAGE 8
<PAGE>

interest on the indebtedness arising hereunder, any amount in excess of the 
Maximum Rate and, in the event the Secured Party ever receives, collects or 
applies as interest any such excess, such amount which could be excessive 
interest shall be applied to the reduction of the unpaid principal balance of 
the indebtedness arising hereunder, and, if the principal balance of such 
indebtedness is paid in full, any remaining excess shall forthwith be paid to 
the Debtor. In determining whether or not the interest paid or payable under 
any specific contingency exceeds the Maximum Rate, Debtor and the Secured 
Party shall, to the maximum extent permitted under applicable law, (i) 
characterize any nonprincipal payment as a standby fee, commitment fee, 
prepayment charge, delinquency charge or reimbursement for a third party 
expense, (ii) exclude voluntary prepayments and the effect thereof, and (iii) 
amortize, prorate, allocate and spread in equal parts throughout the entire 
period during which the indebtedness was outstanding the total amount of 
interest at any time contracted for, charged or received. Subject to the 
terms of this section, all checks and other items received by Secured Party 
in payment of the Obligations secured hereby shall be subject to a clearance 
period of three (3) Business Days provided that the checks and other items 
are received at a time and in such a manner that will facilitate timely 
collection of funds.

     (d) CAPITAL ADEQUACY. Subject to the provisions of SECTION 4(c), if 
Secured Party determines in good faith that compliance with any law or 
regulation or any guideline or request from any central bank or other 
governmental authority (whether or not having the force of law) implemented 
or effective after the date of this Agreement affects or would affect the 
amount of capital required or expected to be maintained by Secured Party and 
that the amount of such capital is increased by or based upon the existence 
of Secured Party's commitment to lend or commitment to issue the Letters of 
Credit hereunder, then, upon 30 days prior written notice by Secured Party, 
the Borrower shall immediately pay to the Secured Party for its account from 
time to time as specified by Secured Party, additional amounts (without 
duplication of any other amounts payable in respect of increased costs) 
sufficient to compensate Secured Party in light of such circumstances, to the 
extent that Secured Party reasonably determines such increase in capital to 
be allocable to the existence of Secured Party's commitment to lend under 
this Agreement and to the extent that the Secured Party reasonably determines 
such increase in capital to be allocable to the issuance or maintenance of 
the Letters of Credit. A certificate as to such amounts and detailing the 
calculation of such amounts submitted to the Borrower by Secured Party shall 
be conclusive and binding for all purposes, absent manifest error.

     (e) LETTERS OF CREDIT. Subject to the provisions of SECTION 4(c), if any 
change in any law or regulation or in the interpretation thereof by any court 
or administrative or governmental authority charged with the administration 
thereof shall either (i) impose, modifY, or deem applicable any reserve, 
special deposit, or similar requirement against letters of credit issued by, 
or assets held by, or deposits in or for the account of, the Secured Party or 
(ii) impose on the Secured Party any other condition regarding the provisions 
of this Agreement relating to the Letters of Credit or any Letter of Credit 
Obligations, and the result of any event referred to in the preceding clause 
(i) or (ii) shall be to increase the cost to the Secured Party of issuing or 
maintaining any Letter of Credit, (which increase in cost shall be determined 
by the Secured Party's reasonable allocation of the aggregate of such cost 
increases resulting from such event), then, upon demand by the Secured Party 
the Borrower shall pay to the Secured Party from time to time as specified by 
the Secured Party additional amounts which shall be sufficient to compensate 
the Secured Party for such increased costs. A certificate as to such 
increased cost incurred by the Secured Party as a result of any event 
mentioned in clause (i) or (ii) above, and 

LOAN AND SECURITY AGREEMENT - PAGE 9
<PAGE>

detailing the calculation of such increased costs submitted by the Secured 
Party to the Borrower, shall be conclusive and binding for all purposes, 
absent manifest error.

     5.   CONDITIONS TO CLOSING. Prior to or simultaneous with the execution 
and delivery hereof and as conditions precedent to the obligation of Bank to 
make any loan hereunder, Debtor shall deliver, or cause to be delivered, to 
Bank, the following, all in form and substance satisfactory to Bank and its 
counsel or the following shall be fulfilled to the satisfaction of Bark, as 
the case may be:

          (a)  A Revolving Loan note in the form of EXHIBIT A executed by
     Debtor;

          (b)  Unconditional guaranties of all Obligations executed by each of
     the Guarantors.

          (c)  An opinion of legal counsel for Debtor satisfactorily addressing
     such matters as may be required by Bank and its counsel;

          (d)  Subordination Agreements from each of The Williamsburg
     Corporation, Timothy Terrell, Scott Roberts and Timothy Rogers.

          (e)  A copy of the articles of incorporation, and all amendments
     thereto, of Debtor, accompanied by the certificate of the Secretary of
     State of the state of incorporation of Debtor, bearing a date no more than
     thirty (30) days prior to the date hereof, to the effect that each such
     copy is correct and complete and that Debtor is a corporation duly
     incorporated and validly existing in such state, and certified by the
     corporate secretary of Debtor dated the date hereof, as being correct and
     complete as of the date hereof,

          (f)  A copy of the bylaws, and all amendments thereto, of Debtor
     accompanied by a certificate from Debtor's corporate secretary, dated the
     date hereof, to the effect that such copy is correct and complete as of the
     date hereof,

          (g)  Certification of incumbency of all officers of Debtor executed by
     the president or vice president and by the corporate secretary of Debtor,
     as of the date hereof, certifYing the name and signature of each such
     officer;

          (h)  A copy of corporate resolutions of Debtor approving this
     Agreement, authorizing the transactions contemplated hereby, and
     authorizing and directing a named officer or officers of Debtor to sign and
     deliver all Loan Documents to be executed by Debtor, duly adopted by
     Debtor's board of directors, accompanied by the certificate of the
     corporate secretary, dated the date hereof, that such copy is a true and
     complete copy of resolutions duly adopted by the board of directors, and
     that such resolutions have not been amended, modified, or revoked in any
     respect and are in full force and effect as of the date hereof,

          (i)  Certification by the Comptroller of the State of Texas bearing a
     date no more than thirty (30) days prior to the date hereof, to the effect
     that Debtor is in good standing with respect to payment of franchise and
     similar taxes;

LOAN AND SECURITY AGREEMENT - PAGE 10
<PAGE>

          (j)  All financing statements required by Secured Party in connection
     with perfection of Secured Party's security interests in the Collateral and
     all termination statements and other amendments to financing statements
     required by Secured Party to make Secured Party's security interest in the
     Collateral a first priority security interest;

          (k)  Evidence of insurance in compliance with the requirements of
     SECTION 11(g) and such loss payable endorsements as may be required by
     Secured Party;

          (l)  Executed landlord's waivers and consents for each location leased
     by Debtor and mortgagee waiver's from each location owned by Debtor;

          (m)  Debtor shall have implemented administrative procedures
     satisfactory to Secured Party, including, but not limited to, matters
     relating to financial statements, receivable agings, inventory summaries,
     collections, borrowing base reporting, projections, and eligibility
     determination;

          (n)  Evidence that immediately after the initial funding hereunder,
     the Borrowing Base will exceed the unpaid balance of the Revolving Loans by
     at least $100,000; and

          (o)  Such other agreements, instruments, certificates and financing
     statements as Secured Party may request in order to perfect or protect its
     interests and rights in the Collateral and under the Loan Documents.

     6.   ORIGINATION FEE. In consideration of the financial accommodations 
granted by Secured Party to Debtor hereunder, Debtor agrees to pay Secured 
Party a fee equal to $7,500, which shall be paid to Secured Party upon the 
execution hereof.

     7.   ASSIGNMENT OF ACCOUNTS. The execution and delivery of this 
Agreement, to the extent that a security interest in the accounts of Debtor 
is granted to Secured Party, shall constitute, with respect to the accounts 
hereby assigned and pledged, an agreement, representation and warranty by 
Debtor to Secured Party that, except for the security interest of Secured 
Party therein:

          (a)  Debtor is the sole owner of and has full unrestricted power and
     right to assign and pledge such accounts free from any lien, security
     interest or encumbrance.

          (b)  Each account is in existence, unconditional and valid, and arose
     from a bona fide outright sale of personal property usually sold by Debtor,
     or for services usually performed by Debtor, in the ordinary course of its
     business, for liquidated amounts and maturing as set forth on its face and
     that such personal property has been shipped to respective account debtors
     or such services have been performed for respective account debtors.

          (c)  No account is subject to any sale, assignment, claim or security
     interest of any character and Debtor will not make any sale or other
     assignment thereof or create any other security interest therein.

LOAN AND SECURITY AGREEMENT - PAGE 11
<PAGE>

          (d)  No account is subject to any claim for credit, deduction,
     allowance or adjustment by an account debtor, or to any defense, dispute,
     setoff or counterclaim, and there is no extension or indulgence with
     respect thereto.

     8.   ESTABLISHMENT OF LOCK BOX. To the extent that a security interest 
in the accounts of Debtor is granted to Secured Party and so long as this 
Agreement shall be in effect or any Obligations shall be outstanding, Debtor 
agrees that, at the request of Secured Party, all sums payable by any account 
debtor to Debtor in payment or on account of any of Debtor's accounts shall 
be deposited in a special bank account ("SPECIAL ACCOUNT") established 
pursuant to Secured Parry's standard form of Lock Box Agreement ("LOCK BOX 
AGREEMENT") and maintained with Secured Party in the name of Debtor, marked 
"Special Account," over which Secured Party alone has power of withdrawal. 
Such sums shall be deposited in the form received, except for the endorsement 
of Debtor where necessary to permit collection of items, which endorsement 
Debtor agrees to make, and which Secured Party is also hereby authorized to 
make on Debtor's behalf. The funds in the Special Account shall be held by 
Secured Party as security for payment of the Obligations. Debtor hereby 
agrees, at the request of Secured Party, immediately upon receipt of checks, 
drafts, cash and other remittances and payment of or on account of any of 
Debtor's accounts, to immediately deposit all of the same into the Special 
Account. Debtor hereby also agrees, upon request by Secured Party, to notify 
all of Debtor's present and future account debtors to send any and all of 
their sums payable in payment of or on account of their accounts payable to 
Debtor to the address indicated in the Lock Box Agreement. Secured Party is 
authorized, empowered and directed to apply any and all funds in the Special 
Account toward, in Secured Party's sole and absolute discretion, the payment 
of the outstanding principal amount of, and interest on, any of the 
Obligations, with any balance remaining after payment in full of the 
Obligations to be held by Secured Party, subject to the written instructions 
of Debtor.

     9.   ESTABLISHMENT OF BLOCKED ACCOUNT. To the extent that a security 
interest in the accounts of Debtor is granted to Secured Party and so long as 
this Agreement shall be in effect or any of the Obligations shall be 
outstanding, Debtor agrees that, at the request of Secured Party, all funds 
payable by any account debtor to Debtor in payment or on account of any of 
Debtor's accounts shall be deposited in a special deposit account ("BLOCKED 
ACCOUNT") of Debtor set up in a bank(s) acceptable to Secured Party. Such 
Blocked Account shall be established pursuant to a tri-party agreement among 
Debtor, Secured Party, and such bank ("BLOCKED ACCOUNT AGREEMENT"), in form 
and substance satisfactory to Secured Party, which Blocked Account Agreement 
shall include the following provisions:

          (a)  Agreement by Debtor that it has no power of withdrawal over the
     funds in the Blocked Account;

          (b)  Agreement by the bank that it shall neither claim nor exercise
     any right of offset or banker's lien against the funds in the Blocked
     Account;

          (c)  Waiver and release by the bank to Secured Party of any right or
     claim which such bank may have in or to the funds in the Blocked Account;

LOAN AND SECURITY AGREEMENT - PAGE 12
<PAGE>

          (d)  Agreement by the bank to forward daily to Secured Party by wire
     transfer (or by such other manner of transfer acceptable to Secured Party)
     to such account in Secured Party as shall be designated by Secured Party,
     all funds in the Blocked Account;

          (e)  Assignment and pledge by Debtor to Secured Party, as additional
     collateral security for the Obligations, of all funds in the Blocked
     Account, and direction by Debtor to the bank (i) to hold such funds as
     bailee for Secured Party, and (ii) to distribute the funds daily to Secured
     Party in the manner specified above in SUBSECTION 9(d);

          (f)  Agreement by Debtor to pay directly to bank all costs and
     expenses associated with the Blocked Account; and

          (g)  Agreement by Debtor that it may unilaterally neither terminate
     the Blocked Account nor terminate the Blocked Account Agreement.

All funds forwarded to Secured Party from such Blocked Account pursuant to 
this Section shall be applied as set forth above in Section 8. The provisions 
of this Section are in addition to and not in limitation of the provisions of 
Section 8.

     10.  OTHER REPRESENTATIONS AND WARRANTIES OF DEBTOR. Debtor represents 
and warrants to Secured Party that:

          (a)  Debtor is conducting, transacting, and carrying on its business
     under the name shown above, or such other names as may be specified in
     Addendum Ill attached hereto and incorporated herein by reference, and is
     not engaged in business under any other name; and Debtor's chief executive
     office is that set forth in SECTION 1(m) above, at which office Debtor
     keeps, and will continue to keep, its records concerning accounts. The only
     other name under which Debtor has conducted business in the last five years
     is "Synergy Telemanagement, Inc." Debtor will promptly notify Secured Party
     in writing of any change in (i) the name of Debtor or any of the names
     under which it is carrying on its business as specified on Addendum III
     attached hereto, (ii) the address of Debtor, (iii) Debtor's primary place
     of business, (iv) the location of the office where records concerning
     accounts are kept, (v) the opening of any new place of business, or (vi)
     the closing of any of its existing places of business.

          (b)  Debtor is duly organized and validly existing under the laws of
     the state set forth in SECTION 1(m) above, is duly qualified and is in good
     standing in each and every state in which it is doing business, and has all
     the requisite power and authority to execute this Agreement and the other
     Loan Documents to be executed by Debtor.

          (c)  The execution, delivery and performance of this Agreement and all
     of the other Loan Documents by Debtor have been duly authorized by all
     necessary corporate action by such Debtor, and constitute legal, valid and
     binding obligations on Debtor, enforceable in accordance with their
     respective terms, except as limited by bankruptcy, insolvency or similar
     laws of general application relating to the enforcement of creditors'
     rights and except to the extent specific remedies may generally be limited
     by equitable principles.

LOAN AND SECURITY AGREEMENT - PAGE 13
<PAGE>

          (d)  The execution, delivery and performance of this Agreement and the
     other Loan Documents, and the consummation of the transactions contemplated
     hereby and thereby, do not (i) conflict with, result in a violation of, or
     constitute a default under any provision of Debtor's Articles of
     Incorporation or Bylaws, or any agreement or other instrument binding upon
     Debtor, or any law, governmental regulation, court decree, or order
     applicable to Debtor, or (ii) require the consent, approval or
     authorization of any third party.

          (e)  There are no actions, suits or proceedings, pending or, to the
     knowledge of Debtor, threatened against or affecting Debtor or the
     properties of Debtor, before any court or governmental department,
     commission or board, which, if determined adversely to Debtor, would have a
     material adverse effect on the financial condition, properties, or
     operations of Debtor.

          (f)  Debtor has not executed any other security agreement currently
     affecting the Collateral or any financing statement regarding the
     Collateral (other than those in favor of Sanwa Business Credit Corporation
     and The Williamsburg Corporation), and no financing statement executed by
     such Debtor regarding the Collateral is now on file (other than those in
     favor of The Williamsburg Corporation, which is being subordinated
     contemporaneously herewith).

          (g)  All Collateral is and will be owned by Debtor, free and clear of
     all other liens, encumbrances, security interests or claims, shall be kept
     at Debtor's address noted above and such other addresses as may be listed
     in Addendum IV attached hereto and incorporated hereby by reference, and
     Debtor shall not (without the prior written approval of Secured Party)
     remove the Collateral therefrom except for the purpose of sale or use in
     the ordinary course of business.

          (h)  Debtor owns all of the assets reflected on its most recent
     balance sheet delivered to Secured Party, free and clear of all liens,
     security interests or other encumbrances, except as previously disclosed in
     writing to Secured Party.

          (i)  As of the date hereof, and after giving effect to this Agreement
     and the completion of all other transactions contemplated by Debtor at the
     time of its execution, (i) Debtor is and will be solvent, (ii) the fair
     saleable value of Debtor's assets exceeds and will continue to exceed
     Debtor's liabilities (both fixed and contingent), (iii) Debtor is and will
     continue to be able to pay its debts as they mature, and (iv) Debtor has
     and will have sufficient capital to carry on its business and all
     businesses in which it is about to engage.

          (j)  Debtor has filed all federal, state and local tax reports and
     returns required by any law or regulation to be filed by it and has either
     duly paid all taxes, duties and charges indicated due on the basis of such
     returns and reports, or made adequate provision for the payment thereof,
     and the assessment of any material amount of additional taxes in excess of
     those paid and reported is not reasonably expected. There is no tax lien
     notice against Debtor presently on file, judgment entered against Debtor or
     levy on or attachment of its property outstanding.

LOAN AND SECURITY AGREEMENT - PAGE 14
<PAGE>

          (k)  Debtor (i) does not maintain or contribute to any defined benefit
     pension plan ("PLAN") under the Employee Retirement Income Security Act of
     1974, as amended from time to time ("ERISA"), or (ii) is not in violation
     of any provisions of ERISA, or any other applicable state or federal law
     with respect to any Plan that it contributes to or maintains.

          (l)  Except as disclosed in writing to Secured Party: (i) Debtor is
     conducting Debtor's businesses in material compliance with all applicable
     federal, state and local laws, statutes, ordinances, rules, regulations,
     orders, determinations and court decisions, including without limitation,
     those pertaining to health or environmental matters such as the
     Comprehensive Environmental Response, Compensation, and Liability Act of
     1980, as amended by the Superfund Amendments and Reauthorization Act of
     1986 (collectively, together with any subsequent amendments, hereinafter
     called "CERCLA"), the Resource Conservation and Recovery Act of 1976, as
     amended by the Used Oil Recycling Act of 1980, the Solid Waste Disposal Act
     Amendments of 1980, and the Hazardous Substance Waste Amendments of 1984
     (collectively, together with any subsequent amendments, hereinafter called
     "RCRA"), the Texas Water Code and the Texas Solid Waste Disposal Act; (ii)
     to the best of our knowledge, none of the operations of Debtor is the
     subject of a federal, state or local investigation evaluating whether any
     material remedial action is needed to respond to a release or disposal of
     any toxic or hazardous substance or solid waste into the environment; (iii)
     Debtor has not filed any notice under any federal, state or local law
     indicating that Debtor is responsible for the release into the environment,
     the disposal on any premises in which Debtor is conducting its businesses
     or the improper storage, of any material amount of any toxic or hazardous
     substance or solid waste or that any such toxic or hazardous substance or
     solid waste has been released, disposed of or is improperly stored, upon
     any premise on which Debtor is conducting its businesses; and (iv) Debtor
     otherwise does not have any known material contingent liability in
     connection with the release into the environment, disposal or the improper
     storage, of any such toxic or hazardous substance or solid waste.  The
     terms "HAZARDOUS SUBSTANCE" and "RELEASE", as used herein, shall have the
     meanings specified in CERCLA, and the terms "SOLID WASTE" and "DISPOSAL",
     as used herein, shall have the meanings specified in RCRA; provided,
     however, that to the extent that the laws of the State of Texas establish
     meanings for such terms which are broader than that specified in either
     CERCLA or RCRA, such broader meanings shall apply.

          (m)  There is no fact known to Debtor that Debtor has not disclosed to
     Secured Party in writing which may result in any material adverse change in
     Debtor's business, properties or operations.

          (n)  No certificate or statement herewith or heretofore delivered by
     Debtor to Secured Party in connection herewith, or in connection with any
     transaction contemplated hereby, contains any untrue statement of a
     material fact or fails to state any material fact necessary to keep the
     statements contained therein from being misleading.

          (o)  The representations, warranties, and covenants of Debtor set
     forth in this Agreement are true and correct as of the time of the making
     of this Agreement, and each request by Debtor for a loan or advance
     hereunder shall constitute, without the necessity of a written 

LOAN AND SECURITY AGREEMENT - PAGE 15
<PAGE>

     certificate or agreement, a representation and warranty by Debtor that, as 
     of the date of such request and at and as of the time of the making of each
     loan or advance hereunder, (i) all of the representations and warranties 
     of Debtor contained in this Agreement are true and correct, (ii) no 
     material adverse change in Debtor's financial condition since the effective
     date of the most recent financial statements furnished to Secured Party by 
     Debtor shall have occurred and be continuing, and (iii) no event has 
     occurred and is continuing, or would result from the requested advance, 
     which constitutes an Event of Default under this Agreement.

          (p)  Each financial statement of Debtor previously supplied to Secured
     Party was prepared in accordance with GAAP in effect on the date of such
     statements were prepared and truly discloses and fairly presents Debtor's
     financial condition as of the date of each statement, and there has been no
     material adverse change in such financial condition or results of
     operations of Debtor subsequent to January 31, 1996, which is the date of
     the most recent financial statements of Debtor supplied to Secured Party.

     11.  AFFIRMATIVE COVENANTS. So long as this Agreement shall be in effect 
or any of the Obligations shall be outstanding, Debtor agrees and covenants 
that, unless the Secured Party shall otherwise consent in writing:

          (a)  Debtor will promptly inform Secured Party of (i) any and all
     material adverse changes in Debtor's financial condition, and (ii) all
     litigation and claims affecting Debtor which could materially affect the
     financial condition of Debtor;

          (b)  Debtor will maintain its books and records in accordance with
     GAAP, applied on-a consistent basis.

          (c)  Debtor will execute and deliver to Secured Party such financing
     statement or statements, in form satisfactory to Secured Party, which
     Secured Party may at any time desire to file in order to perfect and
     preserve its security interest in the Collateral and will reimburse Secured
     Party for the costs of filing the same; and Debtor will take any action
     and/or execute and deliver to Secured Party any instrument, document,
     assignment or other writing which Secured Party in its sole discretion may
     deem necessary or appropriate (i) to carry out the terms of this Agreement,
     (ii) to perfect Secured Party's security interest in the Collateral, (iii)
     to comply with the Federal Assignment of Claims Act, as amended, and/or
     (iv) to facilitate the collection of Debtor's accounts.

          (d)  Debtor will, at its sole cost and expense, defend any action
     which might affect Secured Party's security interest in or Debtor's title
     to the Collateral.

          (e)  If sales of Collateral are made by Debtor in the ordinary course
     of its business for cash, Debtor shall immediately deliver to Secured Party
     the identical checks, cash or the forms of payment which Debtor receives.

          (f)  Debtor will perform, at its sole cost and expense, any and all
     steps requested by Secured Party to protect Secured Party's security
     interest in the Collateral, such as leasing 

LOAN AND SECURITY AGREEMENT - PAGE 16
<PAGE>

     warehouses to Secured Party or its designee, placing and maintaining
     signs, appointing custodians, executing and filing financing or
     continuation statements in form and substance satisfactory to Secured
     Party, maintaining stock records and transferring Collateral to
     warehouses. If any Collateral is in the possession or control of any of
     Debtor's agents or processors, Debtor shall notify such agent or
     processors of Secured Party's security interest therein, and upon
     request instruct them to hold all such Collateral for the account of
     Secured Party and subject to Secured Party's instructions. A physical
     listing of all Collateral, wherever located, shall be taken by Debtor
     whenever requested by Secured Party, and a copy of each such physical
     listing shall be supplied to Secured Party. Secured Party may examine
     and inspect the Collateral at any time.

          (g)  Debtor will keep or cause to be kept adequately insured by
     financially sound and reputable insurers all of its property usually
     insured by persons or entities engaged in the same or similar businesses.
     Without limiting the foregoing, Debtor will insure the Collateral in
     Secured Party's name against loss or damage by fire, theft, burglary,
     pilferage, loss in transit, and such other hazards as Secured Party may
     specify in amounts and under policies by insurers acceptable to Secured
     Party, and all premiums thereon shall be paid by Debtor and the policies
     delivered to Secured Party. If Debtor fails to do so, Secured Party may
     procure such insurance and charge the cost to Debtor's account. Each policy
     of insurance covering the Collateral shall provide that at least ten (10)
     days prior written notice of cancellation or notice of lapse must be given
     to Secured Party by the insurer.

          (h)  Debtor will keep the Collateral in good order and repair and will
     not waste or destroy the Collateral or any part thereof and will not use
     the Collateral in violation of any statute or ordinance.

          (i)  Debtor shall cause each mortgagee of real property owned by
     Debtor and each landlord of real property leased by Debtor to execute and
     deliver agreements satisfactory in form and substance to Secured Party by
     which such mortgagee or landlord waives or subordinates any rights it may
     have in the Collateral.

          (j)  If any account debtor rejects, returns or refuses to accept or
     receive property represented by any account, Debtor will notify Secured
     Party, and at the request of Secured Party, hold such property separate and
     apart from Debtor's property in trust for Secured Party and subject to its
     order or immediately deliver such property to Secured Party. Secured Party
     may accept a return of property represented by any account without
     discharging or affecting Debtor' Obligations. Secured Party may take and
     sell such property for such prices and upon such terms at public or private
     sale in the manner provided in the Code.  At Secured Party's option, Debtor
     will forthwith pay Secured Party the original invoice price of such
     property for application against the Obligations in such manner as Secured
     Party may elect. In the event such property is resold, any account created
     thereby shall be deemed assigned and pledged to Secured party hereunder.

          (k)  Debtor will give Secured Party or any persons designated by it,
     at any time and from time to time, full access to all records available to
     Debtor from any credit reporting

LOAN AND SECURITY AGREEMENT - PAGE 17
<PAGE>

     service, bureau or other similar agency and Secured Party and any
     persons designated by it shall have the right to inspect and make and
     take away copies of any such records.

          (l)  Debtor will furnish such additional information and statements,
     lists of assets and liabilities, tax returns, and other reports with
     respect to Debtor's financial condition and business operations as Secured
     Party may reasonably request from time to time. Secured Party shall have
     the right without hindrance or delay to conduct field examinations, to
     inspect the Collateral and to inspect, audit and copy Debtor's books,
     records, journals, correspondence and other records and data relating to
     the Collateral or Debtor's business.  Secured Party is authorized to
     discuss Debtor's affairs with any Person, including without limitation
     employees of Debtor, as Secured Party may deem necessary in relation to the
     Collateral, Debtor's financial condition or Secured Party's rights under
     the Loan Documents.

          (m)  Debtor will pay and discharge when due all of its indebtedness
     and obligations, including without limitation, all assessments, taxes,
     governmental charges and levies, of every kind and nature, imposed upon
     Debtor or its properties (including, without limitation, the Collateral),
     income, or profits, prior to the date on which penalties would attach, and
     all lawful claims that, if unpaid, might become a lien or charge upon any
     of Debtor's properties, income, or profits; provided, however, Debtor will
     not be required to pay and discharge any such assessment, tax charge, levy
     or claim so long as (i) the legality of the same shall be contested in good
     faith by appropriate proceedings, and (ii) Debtor shall have established on
     its books adequate reserves with respect to such contested assessment, tax,
     charge, levy or claim in accordance with GAAP. Debtor, upon demand of
     Secured Party, will furnish to Secured Party evidence of payment of all
     assessments, taxes, charges, levies and claims against Debtor or its
     properties, income or profits and will authorize the appropriate
     governmental official to deliver to Secured Party at any time a written
     statement of any assessments, taxes, charges, levies and claims against
     Debtor or its properties, income or profits.

          (n)  Debtor will conduct its business in an orderly and efficient
     manner consistent with good business practices, and perform and comply with
     all statutes, rules, regulations and/or ordinances imposed by any
     governmental unit upon Debtor and its businesses and operations, including,
     without limitation, those pertaining to environmental matters.

          (o)  Debtor will execute and deliver, or cause to be executed and
     delivered, any and all other agreements, instruments or documents which
     Secured Party may reasonably request in order to give effect to the
     transactions contemplated under this Agreement and the other Loan
     Documents.

          (p)  Debtor will do and perform all acts required of it under this
     Agreement and the other Loan Documents and furnish to Secured Party such
     other information respecting the business, properties or condition, or the
     operations, financial or otherwise, of Debtor as Secured Party may from
     time to time reasonably request.

LOAN AND SECURITY AGREEMENT - PAGE 18
<PAGE>

          (q)  Debtor will furnish to Secured Party:

               (1)  As soon as possible and in any event within ten (10) days
          after the occurrence of each Event of Default or Default continuing on
          the date of such statement, the statement of the President or the
          designated financial officer of Debtor setting forth the details of
          such Event of Default or Default and the action which Debtor proposes
          to take with respect thereto.

               (2)  As soon as available, and in any event within thirty (30)
          days after the end of each calendar month, a consolidated balance
          sheet and income statement and statement of cash flow of Debtor as of
          the end of such month, all in form and substance and in reasonable
          detail satisfactory to Secured Party and duly certified (subject to
          year-end audit adjustments) by the President or designated financial
          officer of Debtor (A) as being true and correct in all material
          aspects to the best of his or her knowledge and (B) as having been
          prepared in accordance with GAAP.

               (3)  As soon as available and in any event within one hundred and
          twenty (120) days after the end of each fiscal year of Debtor,
          consolidated balance sheet, income statement and statement of cash
          flow of Debtor as of the end of such fiscal year, together with a
          certificate of independent public accountants of recognized standing
          acceptable to Secured Party stating that in the course of their audit
          or review of Debtor, such accountants obtained no knowledge that an
          Event of Default or Default, has occurred and is continuing, or if, in
          the opinion of such accountants, an Event of Default or Default has
          occurred and is continuing, a statement as to the nature thereof.

               (4)  As soon as the same is received by Debtor, a copy of any
          management letter delivered to Debtor by its independent accountants;

               (5)  As soon as available, and in any event at least 30 days
          prior to the commencement of each fiscal year of Debtor, the following
          financial statements on a one (1) year pro forma basis: (i) balance
          sheet and income statement of Debtor and (ii) cash flow statement, all
          in form and substance and in reasonable detail satisfactory to
          Secured Party.

               (6)  Promptly after the commencement thereof, notice of all
          actions, suits and proceedings before any court or any governmental
          department, commission or board involving Debtor.

               (7)  Within thirty (30) days after the end of each calendar
          month, a certificate from the President or designated financial
          officer of Debtor stating such entity is in full compliance with all
          of its obligations under this Agreement and the other Loan Documents,
          and is not in default of any term or provision hereof or thereof and
          demonstrating compliance with all financial ratios and covenants set
          forth in this Agreement and calculating the Tangible Leverage Ratio
          and the Interest Coverage Ratio for Debtor.

LOAN AND SECURITY AGREEMENT - PAGE 19
<PAGE>

               (8)  Within fifteen (15) days after the end of each month for
          Debtor (i) an analysis of its accounts showing an aging of accounts as
          follows: accounts 30 days old and less; accounts over 30 days and less
          than 61 days old; accounts over 60 days old and less than 91 days old;
          accounts over 90 days old and less than 120 days old; and accounts 120
          days old and older, and (ii) an aging of Debtor's payables.

               (9)  Upon request of the Secured Party, but not less often than
          once a week, a borrowing base certificate signed by the President or
          designated financial officer of Debtor, along with supporting
          documentation, in form and substance satisfactory to Secured Party.

          (r)  Debtor will deliver to its independent public accountants
     contemporaneously with the execution hereof the irrevocable instructions,
     in the form attached as ADDENDUM V, that such accountants are to send to
     Secured Party copies of all financial statements (whether preliminary or
     final) and reports which are prepared as a result of any audit or other
     review of the operations, business, finances or internal controls of
     Debtor, including, without limitation, any management reports and any
     reports concerning improper accounting practices, defalcations, financial
     reporting errors or misstatements or fraud.

          (s)  Debtor will use all advances made by Secured Party pursuant
     hereto only for working capital purposes and for the acquisition of two
     switch cards.

          (t)  Jere W. Thompson, Jr., will at all times serve as president and
     chief executive officer of Debtor.

          (u)  At no time will Jere W. Thompson, Jr., Jere W. Thompson, Sr.,
     Mark Langdale and The Williamsburg Corporation collectively own less than
     51% of the voting shares of Debtor.

     12.  NEGATIVE COVENANTS. So long as this Agreement shall be in effect or
any of the Obligations shall be outstanding, Debtor agrees that, without the
prior written consent of Secured Party:

          (a)  Debtor will not permit any financing statement regarding the
     Collateral to be filed other than a financing statement or statements in
     favor of Secured Party.

          (b)  Except for sales of inventory made in the ordinary course of its
     business, Debtor will not sell, encumber, grant a security interest in, or
     dispose of, or permit the sale, encumbrance or disposal of any Collateral
     without the prior written consent of Secured Party.

          (c)  Debtor will not liquidate, merge or consolidate with or into any
     other entity.

          (d)  Debtor will not hereafter permit any tax lien notice to be filed,
     a judgment to be entered against it or its property or a levy on or
     attachment of its property to be made.

LOAN AND SECURITY AGREEMENT - PAGE 20
<PAGE>

          (e)  Debtor will not sell, transfer or otherwise dispose of any of its
     assets or properties, (i) other than sales in the ordinary course of its
     business and (ii) other than the sale of assets having an aggregate sales
     price of no more than $100,000; provided, that the proceeds of any sales
     made pursuant to this clause (ii) must be applied upon their receipt to the
     payment of the Obligations.

          (f)  Debtor will not grant, create, incur or assume any security
     interest, lien or encumbrance on any of its assets or properties, including
     the Collateral, except for financing statements filed with respect to
     presently existing leases of equipment.

          (g)  Debtor will not create, incur or assume any indebtedness for
     borrowed money or issue or assume any other note, debenture, bond or other
     evidences of indebtedness, or enter into any operating or capital leases,
     or guarantee any such indebtedness or such evidences of indebtedness of
     others, other than (i) borrowings from Secured Party, (ii) borrowings
     outstanding on the date hereof and disclosed in writing to Secured Party
     and (iii) purchase money indebtedness secured by purchase money security
     interests that does not exceed $100,000 in the aggregate at any time.

          (h)  Debtor will not change its primary line of business.

          (i)  Debtor will not declare or pay any Distributions, make any other
     distribution with respect to any payment on account of the purchase,
     redemption, or other acquisition or retirement of any capital stock of
     Debtor, or make any other distribution, sale, transfer or lease of any of
     Debtor's assets other than the sale of inventory in the ordinary course of
     business.

          (j)  Debtor will not make or permit to exist any loans or advances to
     any Person.

          (k)  Debtor will not pay or cause to be paid any advance rentals for
     any leased property, real or personal, utilized by Debtor in the conduct
     and operation of its business.

          (l)  Debtor will not enter into any transaction with an Affiliate
     except on arms-length terms that are as favorable to Debtor as could have
     been obtained from a non-Affiliate.

          (m)  Debtor will not make any Investments except for Investments in
     obligations issued or guaranteed by the United States or certificates of
     deposit issued by Bank. As used herein, "INVESTMENT" in any Person means
     any investment, whether by means of share purchase, loan, advance, purchase
     of debt instrument, extension of credit (other than accounts receivable
     arising from the sale of goods or services in the ordinary course of
     business), capital contribution or otherwise, in or to such Person, the
     guaranty of any indebtedness of such Person or the subordination of any
     claim against such Person to other indebtedness of such person or entity.

          (n)  Debtor will not make Capital Expenditures during any fiscal year
     which would in the aggregate exceed $650,000 for such year.

LOAN AND SECURITY AGREEMENT - PAGE 21
<PAGE>

          (o)  Debtor will not suffer or permit its Tangible Leverage Ratio to
     exceed the ratio set forth below as of the end of any fiscal quarter or
     fiscal year ending within the period set forth opposite such ratio:

<TABLE>
          Period                        Minimum Amount
          ------                        --------------
<S>                                     <C>
     March 31, 1996 through             4.0 to 1.0
     September 29, 1996

     September 30, 1996 and             3.5 to 1.0
     thereafter
</TABLE>

          (p)  Debtor will not suffer or permit its Tangible Net Worth to be
     less than the following amount as of the end of any fiscal quarter or
     fiscal year ending within the period set forth opposite such minimum
     amount:

<TABLE>
          Period                        Minimum Amount
          ------                        --------------
<S>                                     <C>
     March 31, 1996 through             $1,000,000
     September 29, 1996

     September 30, 1996 through         $1,100,000
     December 30, 1996

     December 31, 1996                  $1,200,000
     thereafter
</TABLE>

          (q)  Debtor will not suffer or permit its Fixed Charge Coverage Ratio
     as of any fiscal quarter end listed below, calculated for the four quarters
     then ending (except that prior to December 31, 1996, such calculation shall
     be for the period from January 1, 1996 to the end of such fiscal quarter),
     to be less than the ratio set forth below opposite such date:

<TABLE>
          As of                         Minimum Amount
          -----                         --------------
<S>                                     <C>
     March 31, 1996                          0.7:1

     June 30, 1996                           0.9:1

     September 30, 1996                      1.1:1

     December 31, 1996 and                   1.25:1
     thereafter
</TABLE>

          (r)  Debtor will not suffer or permit its Interest Coverage Ratio as
     of any fiscal quarter end listed below, calculated for the four quarters
     then ending (except that prior to December 31, 1996, such calculation shall
     be for the period from January 1, 1996 to the end of such fiscal quarter),
     to be less than the ratio set forth below opposite such date:

LOAN AND SECURITY AGREEMENT - PAGE 22
<PAGE>

<TABLE>
          As of                        Minimum Amount
          -----                        --------------
<S>                                     <C>
     March 31, 1996                     1.2:1

     June 30, 1996                      1.3:1

     September 30, 1996                 2.0:1

     December 31, 1996 and              2.0:1
     thereafter
</TABLE>

     13.  RIGHTS OF SECURED PARTY. Secured Party shall have the rights contained
in this Section at all times during the period of time this Agreement is
effective.

          (a)  Debtor hereby authorizes Secured Party to file, without the
     signature of Debtor, one or more financing or continuation statements, and
     amendments thereto, relating to the Collateral. Debtor further agrees that
     a carbon, photographic or other reproduction of this Agreement or any
     financing statement describing any Collateral is sufficient as a financing
     statement and may be filed in any jurisdiction Secured Party may deem
     appropriate.

          (b)  Debtor hereby irrevocably appoints Secured Party as Debtor's
     attorney-in-fact and proxy, with full authority in the place and stead of
     Debtor and in the name of Debtor or otherwise, from time to time in Secured
     Party's discretion, to take any action and to execute any instrument which
     Secured Party may deem necessary or appropriate to accomplish the purposes
     of this Agreement, including without limitation: (i) to obtain and adjust
     insurance required by Secured Party hereunder; (ii) to demand, collect, sue
     for, recover, compound, receive and give acquittance and receipts for
     moneys due and to become due under or in respect of the Collateral; (iii)
     to receive, endorse and collect any checks, drafts or other instruments,
     documents and chattel paper in connection with clause (i) or (ii) above;
     and (iv) to file any claims or take any action or institute any proceedings
     which Secured Party may deem necessary or appropriate for the collection
     and/or preservation of the Collateral or otherwise to enforce the rights of
     Secured Party with respect to the Collateral.

          (c)  If Debtor fails to perform any agreement or obligation provided
     herein (including without limitation, the payment and discharge of any
     taxes, liens or encumbrances affecting the Collateral), Secured Party may
     itself perform, or cause performance of, such agreement or obligation, and
     the expenses of Secured Party incurred in connection therewith shall be a
     part of the Obligations, secured by the Collateral and payable by Debtor on
     demand.

          (d)  Secured Party or any persons designated by it shall have the
     right to call at Debtor's place or places of business during normal
     business hours to inspect, audit, check and make and take away copies or
     extracts from Debtor's books, records, journals, orders, receipts and any
     correspondence and other data relating to Debtor's business or to any other
     transactions between the parties hereto, without hindrance or delay.

LOAN AND SECURITY AGREEMENT - PAGE 23
<PAGE>

          (e)  All amounts and proceeds (including instruments and writings)
     received by Debtor in respect of Debtor's accounts or general intangibles
     shall be received in trust for the benefit of Secured Party hereunder and,
     upon request of Secured Party, shall be segregated from other property of
     Debtor and shall be forthwith delivered to Secured Party in the same form
     as so received (with any necessary endorsement) and applied to the
     Obligations in such manner as Secured Party deems appropriate in its sole
     discretion.

          (f)  Notwithstanding the existence of any Lock Box Agreement between
     Debtor and Second Party, Secured Party may at its discretion from time to
     time notify any or all obligors under any accounts or general intangibles
     (i) of Secured Party's security interest in such accounts or general
     intangibles and direct such obligors to make payment of all amounts due or
     to become due to Debtor thereunder directly to Secured Party, and (ii) to
     verify the accounts or general intangibles with such obligors. Secured
     Party shall have the right, at the expense of Debtor, (i) to enforce
     collection of any such accounts or general intangibles, (ii) to adjust,
     settle or compromise the amount or payment thereof, (iii) to demand,
     collect, receive, receipt for, sue for, compound and give acquittances for
     any and all amounts due or to become due on the accounts, to take control
     of cash and other proceeds of any accounts, (iv) to endorse the name of
     Debtor on any notes, acceptances, checks, drafts, money orders or other
     evidences of payment or collateral that may come into possession of Secured
     Party, (v) to sign the name of Debtor on any invoice or bill of lading
     relating to any account, on any drafts against account debtors, on
     assignments and verifications of accounts and on notices to account
     debtors, and (vi) to do all other acts and things necessary to carry out
     the purposes of this Agreement. Subject to the terms and provisions of any
     Lock Box Agreement or Blocked Account Agreement, until such time as Secured
     Party elects to exercise the rights hereinabove set forth in this Section,
     Secured Party authorizes Debtor to collect and enforce all accounts. Costs
     of collection and enforcement of accounts, including payment of attorneys'
     fees and out-of-pocket expenses, shall be borne solely by Debtor, whether
     same are incurred by Secured Party or by Debtor. Debtor agrees that the
     collection and enforcement of all accounts by Debtor shall be for the
     account of Secured Party, and all collections and proceeds thereof shall be
     promptly turned over by Debtor to Secured Party in the form in which they
     are received by Debtor, either by mailing or delivering the same to Secured
     Party not later than the banking business day following receipt thereof by
     Debtor. All checks, drafts and other instruments shall be endorsed by
     Debtor to Secured Party, and in the event of failure of Debtor to make such
     endorsement, Secured Party is hereby irrevocably authorized to endorse the
     same on Debtor's behalf Debtor agrees that it will not compromise accounts
     and will not use or dispose of proceeds of accounts or commingle
     collections or proceeds with any of Debtor's other funds or property or
     otherwise exercise any dominion over the same but will hold them separate
     and apart and upon an express trust for Secured Party. All payments 
     received by Secured Party on accounts or other proceeds or on account of 
     cash sales of Collateral will be credited by Secured Party to Debtor's 
     account.

          (g)  Secured Party will at all times have the right to take physical
     possession in the Collateral and to maintain such possession on the
     premises of Debtor or to remove the Collateral or any part thereof to such
     ether places as Secured Party may desire. If Secured Party exercises its
     right to take possession of the Collateral, Debtor shall, upon demand by
     Secured Party, assemble the Collateral and make it available to Secured
     Party at a place reasonably convenient to Secured Party. In addition, with

LOAN AND SECURITY AGREEMENT - PAGE 24
<PAGE>

     respect to all Collateral, as well as all accounts and other security,
     Secured Party shall have all the rights and remedies set forth hereafter in
     this Agreement.

          (h)  Secured Party shall have the right of setoff against Debtor at
     any and all times and in any and all proceedings and instances including,
     but not limited to, bankruptcy, reorganization, receivership or insolvency
     of Debtor.

     14.  EVENTS OF DEFAULT. The occurrence of any one or more of the following
events shall constitute an Event of Default hereunder:

          (a)  The failure, refusal or neglect of Debtor to make payment of the
     Obligations or any portion thereof, as the same shall become due and
     payable;

          (b)  The failure of a Borrower or any Obligated Party to timely and
     properly observe, keep or perform any covenant, agreement, warranty or
     condition required (i) in this Agreement, (ii) in any of the other Loan
     Documents, or (iii) in any of the Agreements (as defined hereinbelow);
     provided, however, that with respect to any default under SECTIONS 11(f),
     11(g), 11(h), 11(i), 11(j) and 11(n), Borrower shall have fifteen calendar
     days from the earlier of the date it becomes aware of a default or the
     receipt of written notice from Secured Party of a default to cure such
     default before it is deemed an Event of Default hereunder;

          (c)  The occurrence of an event of default under (i) any of the other
     Loan Documents or (ii) any of the Agreements;

          (d)  Any representation made by a Borrower or any Obligated Party
     contained herein or contained in any of the other Loan Documents or the
     Agreements is false or misleading in any material respect;

          (e)  If a Borrower or any Obligated Party: (i) becomes insolvent, or
     makes a transfer in fraud of creditors, or makes an assignment for the
     benefit of creditors, or admits in writing its inability to pay its debts
     as they become due; (ii) generally is not paying its debts as such debts
     become due; (iii) has a receiver or custodian appointed for, or take
     possession of, all or substantially all of the assets of such party or any
     of the Collateral, either in a proceeding brought by such party or in a
     proceeding brought against such party and such appointment is not
     discharged or such possession is not terminated within thirty (30) days
     after the effective date thereof or such party consents to or acquiesces in
     such appointment or possession; or (iv) files a petition for relief under
     the United States Bankruptcy Code or any other present or future federal or
     state insolvency, bankruptcy or similar laws (all of the foregoing
     hereinafter collectively called "APPLICABLE BANKRUPTCY LAW") or an
     involuntary petition for relief is filed against such party under any
     Applicable Bankruptcy Law and such involuntary petition is not dismissed
     within thirty (30) days after the filing thereof, or an order for relief
     naming such party is entered under any Applicable Bankruptcy Law, or any
     composition, rearrangement, extension, reorganization or other relief of
     debtors now or hereafter existing is requested or consented to by such
     party; or

LOAN AND SECURITY AGREEMENT - PAGE 25
<PAGE>

          (f)  The filing of a tax lien notice by the United States, any state
     or any governmental subdivision thereof against any of the property of a
     Borrower;

          (g)  The entry of a judgment or judgments in the aggregate amount of
     $100,000 or more against a Borrower or the levy on or attachment of its
     property;

          (h)  The Collateral or any portion thereof is taken on execution or
     other process of law in any action against Debtor;

          (i)  Debtor abandons the Collateral or any portion thereof;

          (j)  The holder of any lien or security interest on any of the assets
     of Debtor, including without limitation, the Collateral (without hereby
     implying the consent of Secured Party to the existence or creation of any
     such lien or security interest on the Collateral), declares a default
     thereunder or institutes foreclosure or other proceedings for the
     enforcement of its remedies thereunder; or

          (k)  If a Borrower or any Obligated Party is an entity, the
     liquidation, dissolution, merger or consolidation of any such entity.

     15.  REMEDIES. Upon the occurrence of any Event of Default, and at any time
thereafter, Secured Party shall have, in addition to all other rights and
remedies provided herein, in any other agreement between Secured Party and
Debtor or by law, the remedies of a secured party under the Code, including, but
not limited to, the right to take possession of the Collateral, and for that
purpose, Secured Party may, so far as Debtor can give authority therefor, enter
upon any premises on which the Collateral may be situated and remove the same
therefrom. The rights and remedies referred to in this Agreement are cumulative,
and in addition to the general remedies set forth above, Secured Party shall
have the following specific remedies upon the occurrence of an Event of Default:

          (a)  At its option, Secured Party may terminate any further loans or
     advances to Debtor hereunder.

          (b)  The entire unpaid balance of the Obligations then owing by Debtor
     to Secured Party (including, without limitation, the Revolving Loans)
     shall, at the option of Secured Party, become immediately due and payable
     without further presentation, demand for payment, notice of intent to
     accelerate, notice of acceleration or dishonor, protest or notice of
     protest of any kind, all of which are expressly waived by Debtor.

          (c)  At its option, Secured Party may require Debtor to assemble the
     Collateral and make it available to Secured Party at a place to be
     designated by Secured Party which is reasonably convenient to Secured Party
     and Debtor. Unless the Collateral is perishable or threatens to decline
     speedily in value or is of a type customarily sold on a recognized market,
     Secured Party will give Debtor reasonable notice of the time and place of
     any public sale thereof or of the time after which any private sale or any
     other intended disposition thereof is to be made. The requirements of

LOAN AND SECURITY AGREEMENT - PAGE 26
<PAGE>

     reasonable notice shall be met if such notice is mailed, postage prepaid,
     to Debtor at least five (5) days before the time of sale or other intended
     disposition of the Collateral.

          (d)  Secured Party may at any time in its discretion transfer any
     other property constituting the Collateral into its own name or that of its
     nominee and receive the income thereon and hold the same as security for
     the Obligations or apply it to the principal or interest due on the
     Obligations, as the Secured Party may elect. Secured Party may demand,
     collect, receipt for, settle, compromise, adjust, sue for, foreclose, or
     realize upon the Collateral as Secured Party may determine, whether or not
     any of the Obligations are then due; and for the purpose of asserting,
     protecting or enforcing any of Secured Party's rights therein, Secured
     Party may receive, open, and dispose of mail addressed to Debtor and
     endorse notes, checks, drafts, money orders, documents of title, or other
     evidences of payment, shipment, or storage of any part of the Collateral on
     behalf of and in the name of Debtor.

          (e)  Debtor shall pay to Secured Party on demand any and all expenses,
     including legal expenses, attorneys' fees, court costs, collection costs,
     and traveling expenses, incurred or paid by Secured Party in protecting or
     enforcing any of its fights hereunder, including its right to take
     possession of the Collateral, to hold, store, prepare for sale, sell, or
     otherwise dispose of the Collateral, and in collecting the proceeds
     thereof. After deducting all of such expenses, the residue of any proceeds
     of collection or sale of the Collateral shall be applied to the payment of
     the Obligations in such order of preference as Secured Party may determine,
     proper allowance for interest on Obligations not then due being made, and
     any excess shall be returned to Debtor, and Debtor shall remain liable for
     any deficiency. Secured Party is hereby authorized to add, from time to
     time, all such expenses to the balance of indebtedness due by Debtor to
     Secured Party, and such expenses shall become a part of the Obligations.

          (f)  In the event that Debtor or any other party seeks to redeem the
     Collateral, to the extent that any such right of redemption may exist,
     Debtor shall pay to Secured Party, in addition to fulfillment of all the
     Obligations secured by the Collateral, any and all expenses incurred or
     paid by Secured Party in retaking, holding, storing, and preparing the
     Collateral for sale or other disposition, including legal expenses,
     attorneys' fees, court costs, collection costs, and traveling expenses.

     16.  OTHER AGREEMENTS. If at any time Debtor and Secured Party are parties
to any other financing agreements (all of such agreements, whether one or more,
being hereinafter referred to as the "AGREEMENTS"), and if the Agreements (or
any of them, if more than one) should be breached in whole or in part by Debtor
or should terminate for any reason whatsoever, such event shall constitute an
Event of Default hereunder. Any sums due hereunder or under the Agreements, or
any one or more of them, may be collected by Secured Party out of sums or
credits due Secured Party under the terms of this Agreement or the Agreements,
or any one or more of them, and any collateral or security for the performance
of this Agreement or any of the Agreements may be realized upon by Secured Party
for the satisfaction of any indebtedness arising with respect to this Agreement
or any of the Agreements. Debtor and Secured Party hereby agree that all
indebtedness, securities and remedies available to Secured Party under this
Agreement or the Agreements may be utilized by Secured Party for the enforcement
of its rights and the collection of any indebtedness due it under the terms of
this

LOAN AND SECURITY AGREEMENT - PAGE 27
<PAGE>

Agreement or the Agreements, the rights and remedies of Secured Party hereunder
being cumulative of all other rights and remedies of Secured Party, and not in
substitution thereof or as an alternative thereto.

     17.  TERM.

          (a)  This Agreement shall become effective upon acceptance by Secured
     Party, as of the date hereinafter set forth, and shall continue in full
     force and effect until the Maturity Date (the "Initial Term") unless
     earlier terminated by Secured Party in connection with the exercise of its
     rights and remedies under this Agreement upon the occurrence of an Event of
     Default.

          (b)  If Debtor terminates this Agreement prior to the end of the
     Initial Term, Debtor acknowledges that (i) such termination would result in
     the loss to Secured Party of the benefits of this Agreement and that the
     damages incurred by Secured Party as a result of such termination are and
     would be difficult of ascertainment and (ii) no such termination shall be
     effective until Debtor has paid to Secured Party all of the Obligations in
     immediately available funds, together with a sum certain as liquidated
     damages, being Debtor's and Secured Party's best and fairest estimate of
     Secured Party's damages caused by such termination, equal to one percent
     (1.0%) of the average outstanding loan balance of the Revolving Loans for
     the period from the date hereof to the date the Revolving Loans are paid in
     full.

          (c)  Notwithstanding anything to the contrary, any proposed
     termination of this Agreement, whether or not at the end of the Initial
     Term, shall not be effective, and shall not release or affect the
     Collateral already assigned to Secured Party or any Obligations incurred or
     rights accrued hereunder, unless and until all Obligations, whether
     incurred pursuant to this Agreement or otherwise, have been paid in full.

     18.  MISCELLANEOUS.

          (a)  WAIVER OF RIGHTS. Debtor waives notice of nonpayment,
     presentment, notice of demand, demand, notice of intention to accelerate,
     notice of acceleration, protest or notice thereof as to the Obligations or
     as to any of the Collateral.

          (b)  ENTIRE AGREEMENT. This Agreement contains the entire agreement of
     Secured Party and Debtor with respect to the Collateral. If the parties
     hereto are parties to any prior agreement, either written or oral, relating
     to the Collateral, the terms of this Agreement shall amend and supersede
     the terms of such prior agreements as to transactions on or after the
     effective date of this Agreement, but all security agreements, financing
     statements, guaranties, other contracts and notices for the benefit of
     Secured Party shall continue in full force and effect to secure all
     Obligations of Debtor to Secured Party under the terms hereof or thereof
     unless Secured Party specifically releases its rights thereunder by
     separate release.

          (c)  FEES AND EXPENSES. Debtor agrees that all fees and expenses,
     including, without limitation, legal, accounting, audit and field
     examination fees and expenses, incurred by Secured Party in connection with
     the preparation of this Agreement and the other Loan Documents, the

LOAN AND SECURITY AGREEMENT - PAGE 28
<PAGE>

     closing of any loan secured hereby, and in administering this Agreement
     and the matters referenced herein shall be paid and borne by Debtor, and
     Secured Party is hereby authorized by Debtor to deduct all such fees and
     expenses from the proceeds of any loan secured hereby or to add, from
     time to time, all such fees and expenses to the balance of Revolving
     Loan due by Debtor to Secured Party hereunder, with such fees and
     expenses becoming a part of the Obligations. Field examination expenses
     for examinations will be charged to Debtor as follows: actual out of
     pocket expenses for examiner's travel, lodging and meals plus $500.00
     per day per examiner. Secured Party will have the right to conduct such
     field examinations from time to time as it deems necessary in its sole
     discretion; provided, however, that as long as no Event of Default has
     occurred, Debtor shall only be obligated to reimburse Secured Party for
     costs and expenses incurred by Secured Party in connection with field
     examinations conducted no more frequently than quarterly; Debtor shall
     reimburse Secured Party for all costs and expenses incurred by Secured
     Party in connection with field examinations conducted after the
     occurrence of an Event of Default. Actual costs for the initial field
     examination conducted prior to the date hereof shall be reimbursed to
     Secured Party by Debtor at closing.

          (d)  ACCOUNT DEBTOR NOTIFICATION. Debtor will immediately notify
     Secured Party in the event (i) that any account debtor fails to accept,
     refuses to accept, returns, offers to return or revokes the acceptance of
     any personal property which is the subject of any account, (ii) of the
     bankruptcy, insolvency or financial embarrassment of any account debtor,
     and (iii) of any material claim asserted by any account debtor for credit,
     allowance, adjustment, dispute, setoff or counterclaim. Debtor will
     immediately, upon receipt thereof, endorse and deliver to Secured Party any
     and all checks, notes, trade acceptances, drafts or other instruments with
     respect to or in payment of any account or any chattel paper with respect
     to personal property or services performed giving rise to any account.

          (e)  EFFECTIVENESS OF AGREEMENT.  This Agreement shall become
     effective only upon acceptance by Secured Party at its offices in Dallas,
     Texas. All transactions hereunder shall take place at Secured Party's
     offices in Dallas, Texas.

          (f)  WAIVER. Neither the failure nor any delay on the part of Secured
     Party to exercise any right, power or privilege herein or under any of the
     Loan Documents shall operate as a waiver thereof, nor shall any single or
     partial exercise of such right, power or privilege preclude any other or
     further exercise thereof or the exercise of any other right, power or
     privilege. No waiver of any provision in this Agreement or in any of the
     other Loan Documents and no departure by Debtor therefrom shall be
     effective unless the same shall be in writing and signed by Secured Party,
     and then shall be effective only in the specific instance and for the
     purpose for which given and to the extent specified in such writing.

          (g)  AMENDMENT. No modification or amendment to this Agreement or to
     any of the other Loan Documents shall be valid or effective unless the same
     is signed by the party against whom it is sought to be enforced.

          (h)  PARTIES IN INTEREST. This Agreement shall be binding upon the
     parties and their successors or assigns, and shall inure to the benefit of
     the parties and the successors or assigns of

LOAN AND SECURITY AGREEMENT - PAGE 29
<PAGE>

     Secured Party, but shall not inure to the benefit of any heirs,
     representatives, successors or assigns of Debtor.

          (i)  VENUE.  All warranties and representations of Debtor contained
     herein and any payment on any indebtedness secured hereby have been or
     shall be made in Dallas County, Texas, and all parties hereto agree that
     venue is proper only in such county, that such county is a convenient forum
     in which to decide any dispute arising hereunder and to submit themselves
     to the personal jurisdiction of the courts located in such county.

          (j)  GOVERNING LAW. The laws of Texas shall govern the construction of
     this Agreement and the rights, remedies, duties and obligations of the
     parties hereto with respect to all transactions hereunder and any and all
     Collateral, to the extent that federal law is not applicable.

          (k)  CUMULATIVE RIGHTS. All rights of Secured Party under the terms of
     this Agreement shall be cumulative of, and in addition to, the rights of
     Secured Party under any and all other agreements between Debtor and Secured
     Party (including, but not limited to, the other Loan Documents and any
     other agreements referenced herein), and not in substitution or diminution
     of any rights now or hereafter held by Secured Party under the terms of any
     other agreement.

          (l)  NOTICES. Any notice or other communication required or permitted
     hereunder shall be in writing and shall be deemed to have been given when
     personally delivered or when deposited in the United States mail,
     registered or certified, postage prepaid, and addressed as follows:

       If to Debtor:          CAPROCK COMMUNICATIONS CORP.
                              Two Galleria Tower
                              13455 Noel Road, Suite 1925, LB 46
                              Dallas, Texas 75240-6638

       If to Secured Party:   BANK ONE, TEXAS, NATIONAL ASSOCIATION
                              P.O. Box 660094
                              Dallas, Texas 75266-0094
                              Attn:  Asset Based Lending Group

     Each of the parties hereto shall be entitled to specify a different address
     by giving written notice to the other party hereto in accordance with this
     Subsection.

          (m)  INDEMNIFICATION. Debtor hereby indemnifies and agrees to hold
     harmless and defend all Indemnified Persons from and against any and all
     Indemnified Claims. Upon notification and demand, Debtor agrees to provide
     defense of any Indemnified Claim and pay all costs and reasonable expenses
     of counsel selected by any Indemnified Person in respect thereof.  The
     indemnification provided for in this paragraph shall survive any
     termination of this Agreement and shall continue for the benefit of all
     Indemnified Persons. Except as specifically provided in this paragraph,
     Debtor waives all notices from any Indemnified Person with respect to such
     indemnification. As used herein, "INDEMNIFIED CLAIMS" means any and all
     claims, demands, actions, causes of action, judgments, obligations,
     liabilities, losses, damages and consequential damages, penalties, fines,
     costs, fees, expenses and

LOAN AND SECURITY AGREEMENT - PAGE 30
<PAGE>

     disbursements (including without limitation, reasonable fees and
     expenses of attorneys and other professional consultants and experts in
     connection with investigation or defense) of every kind, known or
     unknown, existing or hereafter arising, foreseeable or unforeseeable,
     which may be imposed upon, threatened or asserted against, or incurred
     or paid by, any Indemnified Person at any time and from time to time,
     because of, resulting from, in connection with, or arising out of any
     transaction, act, omission, event or circumstance in any way connected
     with the Collateral or the Loan Documents (including enforcement of
     Secured Party's rights thereunder or defense of Secured Party's actions
     thereunder AND SPECIFICALLY INCLUDING ANY AND ALL INDEMNIFIED CLAIMS
     ARISING FROM SECURED PARTY'S ORDINARY NEGLIGENCE, but in any event
     excluding Secured Party's gross negligence or intentional misconduct or
     breach of any Loan Document) or any breach by a Borrower or any
     Obligated Party of any representation, warranty, covenant, agreement or
     condition contained in any Loan Documents or any Event of Default as
     defined in this Agreement, including, without limitation, "Indemnified
     Claims" relating to environmental matters or laws and to laws relating
     to occupational health and safety.

          (n)  DESCRIPTIVE HEADINGS. The captions in this Agreement are for
     convenience only and shall not define or limit the provisions hereof.

          (o)  PARTICIPATION OF OBLIGATIONS. Debtor agrees that Secured Party
     may, at its option, sell interests in the Obligations and its rights under
     this Agreement to a financial institution or institutions and, in
     connection with each such sale, Secured Party may disclose any financial
     and other information available to Secured Party concerning Debtor to each
     prospective purchaser.

          (p)  INVALID PROVISIONS. If any provision of this Agreement or any of
     the other Loan Documents is held to be illegal, invalid or unenforceable
     under present or future laws, such provision shall be fully severable and
     the remaining provisions of this Agreement or any of the other Loan
     Documents shall remain in full force and effect and shall not be affected
     by the illegal, invalid or unenforceable provision or by its severance.

     IN WITNESS THEREOF, this Agreement is executed, to be effective as of the
date of acceptance by Secured Party.


                                   DEBTOR:

                                   CAPROCK COMMUNICATIONS CORP.


                                   By: /s/ Jere Thompson, Jr.
                                      ------------------------------------
                                      Name: JERE THOMPSON, JR.
                                           -------------------------------
                                      Title: PRESIDENT
                                            ------------------------------

ACCEPTED at Dallas, Texas,
this ___ day of March, 1996:

BANK ONE, TEXAS, NATIONAL ASSOCIATION

By:
   ------------------------------

LOAN AND SECURITY AGREEMENT - PAGE 31

<PAGE>

                                   AMENDMENT ONE TO
                             LOAN AND SECURITY AGREEMENT


     THIS AMENDMENT ONE TO LOAN AND SECURITY AGREEMENT (this "AMENDMENT"), dated
as of August 27, 1996, is entered into by and among BANK ONE, TEXAS, NATIONAL
ASSOCIAtION ("BANK") and CAPROCK COMMUNICATIONS CORP., a Texas corporation
("BORROWER").

                                       RECITALS

     A.   Borrower and Bank entered into that certain Loan and Security
Agreement, dated March 14, 1996 (the "LOAN AGREEMENT").

     B.   Bank and Borrower desire to amend the Loan Agreement as herein set
forth.

     NOW, THEREFORE, in consideration of the premises herein contained and other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged by all parties, the parties hereto, intending to be legally bound,
agree as follows:

                                      ARTICLE I
                                     DEFINITIONS

     Section 1.01. DEFINITIONS. Capitalized terms used in this Amendment, to the
extent not otherwise defined herein, shall have the same definitions assigned to
such terms in the Loan Agreement, as amended hereby.

                                      ARTICLE II
                           AMENDMENTS TO THE LOAN AGREEMENT

     Section 2.01. AMENDMENT OF DEFINITIONS. SECTION 1(g) of the Loan Agreement
is hereby amended by deleting the present such subsection in its entirety and
substituting therefor the following:

     (g)  "BORROWING BASE" shall mean, as of any date of determination, the
     lesser of (i) the sum of $1,500,000 LESS the Letter of Credit Exposure, or
     (ii) the sum of (1) the product of (A) the Accounts Advance Rate and (B)
     Debtor's Eligible Accounts, PLUS (2) the lesser of (A) $500,000 and (B) 50%
     of Debtor's total accrued but unbilled accounts receivable (PROVIDED that,
     notwithstanding what the calculation would otherwise be, the amount
     determined under this clause (2) shall be ZERO for the sixth day of each
     month through the twenty-fifth day of each month inclusive), LESS (3) the
     Letter of Credit Exposure, LESS (4) the Reserve, all determined as of such
     date of determination.


                                     -1-

<PAGE>

     Section 2.02. AMENDMENT OF SECTION 11(q)(7). SECTION 11(q)(7) of the Loan
Agreement is hereby amended by deleting the present such subsection in its
entirety and substituting therefor the following:

     (7)  Within thirty (30) days after the end of each calendar quarter, a
     certificate from the President or designated financial officer of Debtor
     stating such entity is in full compliance with all of its obligations under
     this Agreement and the other Loan Documents, and is not in default of any
     term or provision hereof or thereof and demonstrating compliance with all
     financial ratios and covenants set forth in this Agreement and calculating
     the Tangible Leverage Ratio, Tangible Net Worth, Fixed Charge Coverage
     Ratio and the Interest Coverage Ratio for Debtor.

                                     ARTICLE III
                                  WAIVER OF DEFAULTS

     Section 3.01 WAIVER. Bank hereby waives the defaults existing as of March
31, 1995 under SECTIONS 12(q) AND 12(r) of the Loan Agreement. There are no
other waivers relating to the Loan Agreement except those specifically set forth
above. Please note that the above waivers are effective only in the specific
instances and for the purposes for which given. Furthermore, neither the
granting of the above waivers nor the failure or delay to exercise any right by
Bank shall operate as a waiver of any other Default or Event of Default which
may currently exist under the Loan Agreement or preclude Bank from the exercise
of any right or remedy. Except as set forth herein, all terms and provisions of
the Loan Agreement, all rights and remedies of Bank and all obligations of
Borrower and others shall remain in full force and effect and are hereby
ratified, adopted and confirmed in all respects.

                                      ARTICLE IV
                                 CONDITIONS PRECEDENT

     Section 4.01. CONDITIONS PRECEDENT. The effectiveness of this Amendment is
subject to the satisfaction of the following conditions precedent, unless
specifically waived in writing by Bank:

          (a)  The representations and warranties contained herein and in all
     other Loan Documents shall be true and correct as of the date hereof as if
     made on the date hereof,

          (b)  No Default or Event of Default shall have occurred and be
     continuing;

          (c)  Bank shall have executed this Amendment;

          (d)  Bank shall have received this Amendment, duly executed by
     Borrower; and


                                     -2-

<PAGE>

          (e)  All corporate proceedings taken in connection with the
     transactions contemplated by this Amendment and all documents, instruments
     and other legal matters incident thereto shall be satisfactory to Bank and
     its legal counsel in their sole discretion.

                                      ARTICLE V
                  RATIFICATIONS, REPRESENTATIONS, AND WARRANTIES

     Section 5.01. RATIFICATIONS BY BORROWER. The terms and provisions set forth
in this Amendment shall modify and supersede all inconsistent terms and
provisions set forth in the Loan Agreement and, except as expressly modified and
superseded by this Amendment, the terms and provisions of the Loan Agreement are
ratified and confirmed and shall continue in full force and effect. The Loan
Agreement as amended by this Amendment shall continue to be legal, valid,
binding and enforceable in accordance with its terms.

     Section 5.02. RENEWAL AND EXTENSION OF SECURITY INTERESTS AND ASSIGNMENTS.
Borrower hereby renews and affirms the liens and security interests created and
granted in the Loan Agreement and all other Loan Documents. Borrower agrees that
this Amendment shall in no manner affect or impair the liens and security
interests securing the Obligations, and that such liens and security interests
shall not in any manner be waived, the purposes of this Amendment being to
modify the Loan Agreement as herein provided, and to carry forward all liens and
security interests securing same, which are acknowledged by Borrower to be valid
and subsisting.

     Section 5.03. REPRESENTATIONS AND WARRANTIES. Borrower represents and
warrants to Bank as follows: (i) the execution, delivery and performance of this
Amendment and any and all other Loan Documents executed and/or delivered in
connection herewith have been authorized by all requisite corporate action on
the part of Borrower and will not violate the articles of incorporation or
bylaws of Borrower or any agreement to which Borrower is a party; (ii) the
representations and warranties contained in the Loan Agreement and any other
Loan Document are true and correct on and as of the date hereof as though made
on and as of the date hereof, (iii) no Default or Event of Default under the
Loan Agreement has occurred and is continuing; and (iv) Borrower is in full
compliance with all covenants and agreements contained in the Loan Agreement, as
amended hereby.

                                     ARTICLE VI
                                   MISCELLANEOUS

     Section 6.01. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All
representations and warranties made in the Loan Agreement or any other Loan
Document, including without limitation, any Loan Document furnished in
connection with this Amendment, shall survive the execution and delivery of this
Amendment and the other Loan Documents, and no investigation by Bank or any
closing shall affect such representations and warranties or the right of Bank to
rely thereon.


                                     -3-

<PAGE>

     Section 6.02. REFERENCE TO LOAN AGREEMENT. Each of the Loan Documents,
including the Loan Agreement and any and all other agreements, documents or
instruments now or hereafter executed and delivered pursuant to the terms hereof
or pursuant to the terms of the Loan Agreement as amended hereby, are hereby
amended so that any reference in such Loan Documents to the Loan Agreement
shall mean a reference to the Loan Agreement as amended hereby.

     Section 6.03. EXPENSES OF BANK. Borrower agrees to pay on demand all costs
and expenses incurred by Bank in connection with the preparation, negotiation
and execution of this Amendment and the other Loan Documents executed pursuant
hereto and any and all amendments, modifications, and supplements thereto,
including, without limitation, the costs and fees of Bank's legal counsel, and
all costs and expenses incurred by Bank in connection with the enforcement or
preservation of any rights under the Loan Agreement, as amended hereby, or any
other Loan Document, including, without limitation, the reasonable costs and
fees of Bank's legal counsel.

     Section 6.04. SEVERABILITY. Any provision of this Amendment held by a court
of competent jurisdiction to be invalid or unenforceable shall not impair or
invalidate the remainder of this Amendment and the effect thereof shall be
confined to the provision so held to be invalid or unenforceable.

     SECTION 6.05.  APPLICABLE LAW. THIS AMENDMENT SHALL BE DEEMED TO HAVE BEEN
MADE AND TO BE PERFORMABLE IN AND SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS WITHOUT REGARD TO ITS CONFLICTS
OF LAWS PRINCIPLES.

     Section 6.06. SUCCESSORS AND ASSIGNS. This Amendment is binding upon and
shall inure to the benefit of the parties hereto and their respective
successors, assigns, heirs, executors, and legal representatives, except that
none of the parties hereto other than Bank may assign or transfer any of its
rights or obligations hereunder without the prior written consent of Bank.

     Section 6.07. COUNTERPARTS. This Amendment may be executed in one or more
counterparts, each of which when so executed shall be deemed to be an original,
but all of which when taken together shall constitute one and the same
instrument.

     Section 6.08. HEADINGS. The headings, captions, and arrangements used in
this Amendment are for convenience only and shall not affect the interpretation
of this Amendment.

     Section 6.09. CONFLICTING PROVISIONS. If any provision of the Loan
Agreement as amended hereby conflicts with any provision of any other Loan
Document, the provision in the Loan Agreement shall control.

     SECTION 6.10.  ENTIRE AGREEMENT. THIS AMENDMENT, THE LOAN AGREEMENT AND ALL
OTHER LOAN DOCUMENTS EXECUTED AND 


                                     -4-

<PAGE>

DELIVERED IN CONNECTION WITH AND PURSUANT TO THIS AMENDMENT AND THE LOAN 
AGREEMENT REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE 
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL 
AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE 
PARTIES.

     EXECUTED as of the date first written above.

                                       BANK ONE, TEXAS, NATIONAL ASSOCIATION


                                       By: /s/ C.L. PRUDHOMME, II
                                          ----------------------------------
                                       Name: C.L. Prudhomme, II
                                            --------------------------------
                                       Title: Vice President
                                             -------------------------------


                                       CAPROCK COMMUNICATIONS CORP.



                                       By: /s/ JERE W. THOMPSON, JR.
                                          ----------------------------------
                                       Its: President
                                           ---------------------------------






                                     -5-

<PAGE>

                              RATIFICATION BY GUARANTORS


     Each of Jere W. Thompson, Jr., Timothy W. Rogers, Timothy M. Terrell and
Scott L. Roberts (each a "GUARANTOR"), executed an Unlimited Guaranty dated on
or about March 9, 1996 (the "GUARANTY") for the benefit of Bank: Each Guarantor
hereby (i) ratifies and confirms the terms and conditions of his Guaranty and
agrees that such Guaranty is and shall continue in full force and effect for the
benefit of Bank and (ii) agrees that neither this Amendment nor the transactions
contemplated hereby shall in any manner affect or impair such Guaranty.


                                       By: /s/ JERE W. THOMPSON, JR.
                                          ----------------------------------
                                       Jere W. Thompson, Jr.


                                       By: /s/ TIMOTHY W. ROGERS
                                          ----------------------------------
                                       Timothy W. Rogers


                                       By: /s/ TIMOTHY M. TERRELL
                                          ----------------------------------
                                       Timothy M. Terrell


                                       By: /s/ SCOTT L. ROBERTS
                                          ----------------------------------
                                       Scott L. Roberts




                                     -6-
<PAGE>
                                       
                                AMENDMENT TWO TO
                          LOAN AND SECURITY AGREEMENT


     THIS AMENDMENT TWO TO LOAN AND SECURITY AGREEMENT (this "AMENDMENT"), 
dated as of October 31, 1996, is entered into by and among BANK ONE, TEXAS, 
NATIONAL ASSOCIATION ("BANK") and CAPROCK COMMUNICATIONS CORP., a Texas 
corporation ("BORROWER").

                                    RECITALS

     A.   Borrower and Bank entered into that certain Loan and Security 
Agreement, dated March 14, 1996, as amended by Amendment One dated August 27, 
1996 (the "LOAN AGREEMENT").

     B.   Bank and Borrower desire to amend the Loan Agreement as herein set 
forth.

     NOW, THEREFORE, in consideration of the premises herein contained and 
other good and valuable consideration, the receipt and sufficiency of which 
are hereby acknowledged by all parties, the parties hereto, intending to be 
legally bound, agree as follows:

                                   ARTICLE I
                                  DEFINITIONS

     Section 1.01. DEFINITIONS. Capitalized terms used in this Amendment, to 
the extent not otherwise defined herein, shall have the same definitions 
assigned to such terms in the Loan Agreement, as amended hereby.

                                   ARTICLE II
                         AMENDMENTS TO THE LOAN AGREEMENT

     Section 2.01. AMENDMENT OF SECTION 2. SECTION 2 of the Loan Agreement is 
hereby amended by adding thereto the following as SECTION 2(c):

          (c)  SHORT TERM LOAN. Secured Party shall loan to Debtor in one
     advance $200,000 to be evidenced by a promissory note, in form and
     substance acceptable to Secured Party in its discretion, providing that
     interest shall be payable monthly and that all principal and unpaid and
     accrued interest shall be payable on March 1, 1997. Notwithstanding any
     other provision of this Agreement, such loan shall bear interest at the
     lesser of (i) the Maximum Rate and (ii) a rate calculated on the basis of
     actual days elapsed but computed as if each year consisted of 360 days,
     equal to the sum of (1) the Base Rate plus (2) two percent (2.0%) per 
     annum. Each change in the rate to be charged on such loan shall be 
     effective without notice to Debtor on the effective date of each change 
     in the Maximum Rate or the Base Rate, as the case may be.

                                      -1-
<PAGE>

     Section 2.02. AMENDMENT OF SECTION 12(n). SECTION 12(n) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

     (n)  Debtor will not make Capital Expenditures during any fiscal year which
     would in the aggregate exceed $650,000 for such year; provided, however,
     that for fiscal year 1996, Debtor may make Capital Expenditures that do not
     exceed in the aggregate $1,200,000.


                                  ARTICLE III
                              CONDITIONS PRECEDENT

     Section 3.01. CONDITIONS PRECEDENT. The effectiveness of this Amendment 
is subject to the satisfaction of the following conditions precedent, unless 
specifically waived in writing by Bank:

          (a)  The representations and warranties contained herein and in all
     other Loan Documents shall be true and correct as of the date hereof as if
     made on the date hereof,

          (b)  No Default or Event of Default shall have occurred and be
     continuing;

          (c)  Bank shall have executed this Amendment;

          (d)  Bank shall have received this Amendment, duly executed by
     Borrower;

          (e)  All corporate proceedings taken in connection with the
     transactions contemplated by this Amendment and all documents, instruments
     and other legal matters incident thereto shall be satisfactory to Bank and
     its legal counsel in their sole discretion; and

          (f) Borrower shall pay to Secured Party a closing fee of $1,000.


                                   ARTICLE IV
                 RATIFICATIONS, REPRESENTATIONS, AND WARRANTIES

     Section 4.01. RATIFICATIONS BY BORROWER. The terms and provisions set 
forth in this Amendment shall modify and supersede all inconsistent terms and 
provisions set forth in the Loan Agreement and, except as expressly modified 
and superseded by this Amendment, the terms and provisions of the Loan 
Agreement are ratified and confirmed and shall continue in full force and 
effect. The Loan Agreement as amended by this Amendment shall continue to be 
legal, valid, binding and enforceable in accordance with its terms.

                                      -2-
<PAGE>

     Section 4.02. RENEWAL AND EXTENSION OF SECURITY INTERESTS AND 
ASSIGNMENTS. Borrower hereby renews and affirms the liens and security 
interests created and granted in the Loan Agreement and all other Loan 
Documents. Borrower agrees that this Amendment shall in no manner affect or 
impair the liens and security interests securing the Obligations, and that 
such liens and security interests shall not in any manner be waived, the 
purposes of this Amendment being to modify the Loan Agreement as herein 
provided, and to carry forward all liens and security interests securing 
same, which are acknowledged by Borrower to be valid and subsisting.

     Section 4.03. REPRESENTATIONS AND WARRANTIES. Borrower represents and 
warrants to Bank as follows: (i) the execution, delivery and performance of 
this Amendment and any and all other Loan Documents executed and/or delivered 
in connection herewith have been authorized by all requisite corporate action 
on the part of Borrower and will not violate the articles of incorporation or 
bylaws of Borrower or any agreement to which Borrower is a party; (ii) the 
representations and warranties contained in the Loan Agreement and any other 
Loan Document are true and correct on and as of the date hereof as though 
made on and as of the date hereof; (iii) no Default or Event of Default under 
the Loan Agreement has occurred and is continuing; and (iv) Borrower is in 
full compliance with all covenants and agreements contained in the Loan 
Agreement, as amended hereby.

                                   ARTICLE V
                                 MISCELLANEOUS

     Section 5.01. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All 
representations and warranties made in the Loan Agreement or any other Loan 
Document, including without limitation, any Loan Document furnished in 
connection with this Amendment, shall survive the execution and delivery of 
this Amendment and the other Loan Documents, and no investigation by Bank or 
any closing shall affect such representations and warranties or the right of 
Bank to rely thereon.

     Section 5.02. REFERENCE TO LOAN AGREEMENT. Each of the Loan Documents, 
including the Loan Agreement and any and all other agreements, documents or 
instruments now or hereafter executed and delivered pursuant to the terms 
hereof or pursuant to the terms of the Loan Agreement as amended hereby, are 
hereby amended so that any reference in such Loan Documents to the Loan 
Agreement shall mean a reference to the Loan Agreement as amended hereby.

     Section 5.03. EXPENSES OF BANK. Borrower agrees to pay on demand all 
costs and expenses incurred by Bank in connection with the preparation, 
negotiation and execution of this Amendment and the other Loan Documents 
executed pursuant hereto and any and all amendments, modifications, and 
supplements thereto, including, without limitation, the costs and fees of 
Bank's legal counsel, and all costs and expenses incurred by Bank in 
connection with the enforcement or preservation of any rights under the Loan 
Agreement, as amended hereby, or any other Loan Document, including, without 
limitation, the reasonable costs and fees of Bank's legal counsel.

                                      -3-
<PAGE>

     Section 5.04. SEVERABILITY. Any provision of this Amendment held by a 
court of competent jurisdiction to be invalid or unenforceable shall not 
impair or invalidate the remainder of this Amendment and the effect thereof 
shall be confined to the provision so held to be invalid or unenforceable.

     SECTION 5.05.  APPLICABLE LAW. THIS AMENDMENT SHALL BE DEEMED TO HAVE 
BEEN MADE AND TO BE PERFORMABLE IN AND SHALL BE GOVERNED BY AND CONSTRUED IN 
ACCORDANCE WITH THE LAW OF THE STATE OF TEXAS WITHOUT REGARD TO ITS CONFLICTS 
OF LAWS PRINCIPLES.

     Section 5.06. SUCCESSORS AND ASSIGNS. This Amendment is binding upon and 
shall inure to the benefit of the parties hereto and their respective 
successors, assigns, heirs, executors, and legal representatives, except that 
none of the parties hereto other than Bank may assign or transfer any of its 
rights or obligations hereunder without the prior written consent of Bank.

     Section 5.07. COUNTERPARTS. This Amendment may be executed in one or 
more counterparts, each of which when so executed shall be deemed to be an 
original, but all of which when taken together shall constitute one and the 
same instrument.

     Section 5.08. HEADINGS. The headings, captions, and arrangements used in 
this Amendment are for convenience only and shall not affect the 
interpretation of this Amendment.

     Section 5.09. CONFLICTING PROVISIONS. If any provision of the Loan 
Agreement as amended hereby conflicts with any provision of any other Loan 
Document, the provision in the Loan Agreement shall control.

                                      -4-
<PAGE>

     SECTION 5.10.  ENTIRE AGREEMENT. THIS AMENDMENT, THE LOAN AGREEMENT AND 
ALL OTHER LOAN DOCUMENTS EXECUTED AND DELIVERED IN CONNECTION WITH AND 
PURSUANT TO THIS AMENDMENT AND THE LOAN AGREEMENT REPRESENT THE FINAL 
AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF 
PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE 
ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

     EXECUTED as of the date first written above.

                                               BANK ONE, TEXAS, NATIONAL
                                               ASSOCIATION

                                               By: Gina A. Norris
                                                  ----------------------

                                               Name: Gina A. Norris
                                                    --------------------
                                               Title: Vice President
                                                     -------------------


                                               CAPROCK COMMUNICATIONS CORP.


                                               By: /s/ Jere Thompson, Jr.
                                                  ----------------------
                                               Its: President
                                                   ---------------------



                                      -5-
<PAGE>

                           RATIFICATION BY GUARANTORS


     Each of Jere W. Thompson, Jr., Timothy W. Rogers, Timothy M. Terrell and 
Scott L. Roberts (each a "GUARANTOR"), executed an Unlimited Guaranty dated 
on or about March 9, 1996 (the "GUARANTY") for the benefit of Bank. Each 
Guarantor hereby (i) ratifies and confirms the terms and conditions of his 
Guaranty and agrees that such Guaranty is and shall continue in full force 
and effect for the benefit of Bank, (ii) agrees that neither this Amendment 
nor the transactions contemplated hereby shall in any manner affect or impair 
such Guaranty and (iii) acknowledges that the Obligations covered by the 
Guaranty include, without limitation, the short term loan contemplated by 
this Amendment.



                                     /s/ Jere W. Thompson, Jr.
                                     -------------------------------------
                                     Jere W. Thompson, Jr.



                                     /s/ Timothy W. Rogers
                                     -------------------------------------
                                     Timothy W. Rogers



                                     /s/ Timothy M. Terrell
                                     -------------------------------------
                                     Timothy M. Terrell



                                     /s/ Scott L. Roberts
                                     -------------------------------------
                                     Scott L. Roberts


                                      -6-
<PAGE>
                                       
                               AMENDMENT THREE TO
                          LOAN AND SECURITY AGREEMENT


     THIS AMENDMENT THREE TO LOAN AND SECURITY AGREEMENT (this "AMENDMENT"), 
dated as of February 28, 1997, is entered into by and among BANK ONE, TEXAS, 
NATIONAL ASSOCIATION ("BANK") and CAPROCK COMMUNICATIONS CORP.; a Texas 
corporation ("BORROWER").

                                    RECITALS

     A.   Borrower and Bank entered into that certain Loan and Security 
Agreement, dated March 14, 1996, as amended by Amendment One dated August 27, 
1996 and Amendment Two dated October 31, 1996 (the "LOAN AGREEMENT").

     B.   Bank and Borrower desire to amend the Loan Agreement as herein set 
forth.

     NOW, THEREFORE, in consideration of the premises herein contained and 
other good and valuable consideration, the receipt and sufficiency of which 
are hereby acknowledged by all parties, the parties hereto, intending to be 
legally bound, agree as follows:

                                   ARTICLE I
                                  DEFINITIONS

     Section 1.01. DEFINITIONS. Capitalized terms used in this Amendment, to 
the extent not otherwise defined herein, shall have the same definitions 
assigned to such terms in the Loan Agreement, as amended hereby.

                                   ARTICLE II
                        AMENDMENTS TO THE LOAN AGREEMENT

     Section 2.01. AMENDMENT OF SECTION 1(bb). SECTION 1(bb) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

     "(bb) "MATURITY DATE" shall mean March 31, 1997."

     Section 2.02. AMENDMENT OF SECTION 2. SECTION 2(c) of the Loan Agreement 
is hereby amended in its entirety to read as follows:

          "(c) SHORT TERM LOAN.  Secured Party shall loan to Debtor in one
     advance $200,000 to be evidenced by a promissory note, m form and substance
     acceptable to Secured Party in its discretion, providing that interest
     shall be payable monthly and that all principal and unpaid and accrued
     interest shall be payable on March 31, 1997. Notwithstanding any other
     provision of this Agreement, such loan shall bear interest at 

                                      -1-
<PAGE>

     the lesser of (i) the Maximum Rate and (ii) a rate calculated on the basis 
     of actual days elapsed but computed as if each year consisted of 360 days, 
     equal to the sum of (1) the Base Rate plus (2) two percent (2.0%) per 
     annum. Each change in the rate to be charged on such loan shall be 
     effective without notice to Debtor on the effective date of each change in 
     the Maximum Rate or the Base Rate, as the case may be."


                                  ARTICLE III
                               WAIVER OF DEFAULTS

     Section 3.01 WAIVER. Bank hereby waives the Defaults existing as of 
September 30, 1996 and December 31, 1996 under SECTIONS 12 (o), 12(q) AND 
12(r) of the Loan Agreement and the Default existing as of December 31, 1996 
under SECTION 12(p) of the Loan Agreement. There are no other waivers 
relating to the Loan Agreement except those specifically set forth above. 
Please note that the above waivers are effective only in the specific 
instances and for the purposes for which given. Furthermore, neither the 
granting of the above waivers nor the failure or delay to exercise any right 
by Bank shall operate as a waiver of any other Default or Event of Default 
which may currently exist under the Loan Agreement or preclude Bank from the 
exercise of any right or remedy. Except as set forth herein, all terms and 
provisions of the Loan Agreement, all rights and remedies of Bank and all 
obligations of Borrower and others shall remain in full force and effect and 
are hereby ratified, adopted and confirmed in all respects.

                                   ARTICLE IV
                              CONDITIONS PRECEDENT

     Section 4.01. CONDITIONS PRECEDENT. The effectiveness of this Amendment 
is subject to the condition precedent that Bank shall have received (or 
waived receipt of) the following, each duly executed and delivered and in 
form and substance and dated as of a date satisfactory to Bank and its legal 
counsel, or that the following shall be fulfilled, as the case may be:

          (a)  The representations and warranties contained herein and in all
     other Loan Documents shall be true and correct as of the date hereof as if
     made on the date hereof,

          (b)  No Default (others than those expressly waived by the terms
     hereof) or Event of Default shall have occurred and be continuing;

          (c)  Bank shall have executed this Amendment;

          (d)  Bank shall have received this Amendment, a Renewal and Extension
     Promissory Note in the original principal amount of $1,500,000 and a 
     Renewal and Extension Promissory Note in the original principal amount of
     $200,000, each duly executed by Borrower; and

                                      -2-
<PAGE>

          (e)  All corporate proceedings taken in connection with the
     transactions contemplated by this Amendment and all documents, instruments
     and other legal matters incident thereto shall be satisfactory to Bank and
     its legal counsel in their sole discretion.

                                   ARTICLE V
                 RATIFICATIONS. REPRESENTATIONS, AND WARRANTIES

     Section 5.01. RATIFICATIONS BY BORROWER. The terms and Provisions set 
forth in this Amendment shall modify and supersede all inconsistent terms and 
provisions set forth in the Loan Agreement and, except as expressly modified 
and superseded by this Amendment, the terms and provisions of the Loan 
Agreement are ratified and confirmed and shall continue in full force and 
effect. The Loan Agreement as amended by this Amendment shall continue to be 
legal, valid, binding and enforceable in accordance with its terms.

     Section 5.02. RENEWAL AND EXTENSION OF SECURITY INTERESTS AND 
ASSIGNMENTS. Borrower hereby renews and affirms the liens and security 
interests created and granted in the Loan Agreement and all other Loan 
Documents. Borrower agrees that this Amendment shall in no manner affect or 
impair the liens and security interests securing the Obligations, and that 
such liens and security interests shall not in any manner be waived, the 
purposes of this Amendment being to modify the Loan Agreement as herein 
provided, and to carry forward all liens and security interests securing 
same, which are acknowledged by Borrower to be valid and subsisting.

     Section 5.03. REPRESENTATIONS AND WARRANTIES. Borrower represents and 
warrants to Bank as follows: (i) the execution, delivery and performance of 
this Amendment and any and all other Loan Documents executed and/or delivered 
in connection herewith have been authorized by all requisite corporate action 
on the part of Borrower and will not violate the articles of incorporation or 
bylaws of Borrower or any agreement to which Borrower is a party; (ii) the 
representations and warranties contained in the Loan Agreement and any other 
Loan Document are true and correct on and as of the date hereof as though 
made on and as of the date hereof; (iii) no Default or Event of Default under 
the Loan Agreement has occurred and is continuing; and (iv) Borrower is in 
full compliance with all covenants and agreements contained in the Loan 
Agreement, as amended hereby.

                                   ARTICLE VI
                                 MISCELLANEOUS

     Section 6.01. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. An 
representations and warranties made in the Loan Agreement or any other Loan 
Document, including without limitation, any Loan Document furnished in 
connection with this Amendment, shall survive the execution and delivery of 
this Amendment and the other Loan Documents, and no investigation by Bank or 
any closing shall affect such representations and warranties or the right of 
Bank to rely thereon.

                                      -3-
<PAGE>

     Section 6.02. REFERENCE TO LOAN AGREEMENT. Each of the Loan Documents, 
including the Loan Agreement and any and all other agreements, documents or 
instruments now or hereafter executed and delivered pursuant to the terms 
hereof or pursuant to the terms of the Loan Agreement as amended hereby, are 
hereby amended so that any reference in such Loan Documents to the Loan 
Agreement shall mean a reference to the Loan Agreement as amended hereby.

     Section 6.03. EXPENSES OF BANK. Borrower agrees to pay on demand all 
costs and expenses incurred by Bank in connection with the preparation, 
negotiation and execution of this Amendment and the other Loan Documents 
executed pursuant hereto and any and all amendments, modifications, and 
supplements thereto, including, without limitation, the costs and fees of 
Bank's legal counsel, and all costs and expenses incurred by Bank in 
connection with the enforcement or preservation of any rights under the Loan 
Agreement, as amended hereby, or any other Loan Document, including, without 
limitation, the reasonable costs and fees of Bank's legal counsel.

     Section 6.04. SEVERABILITY. Any provision of this Amendment held by a 
court of competent jurisdiction to be invalid or unenforceable shall not 
impair or invalidate the remainder of this Amendment and the effect thereof 
shall be confirmed to the provision so held to be invalid or unenforceable.

     SECTION 6.05.  APPLICABLE LAW. THIS AMENDMENT SHALL BE DEEMED TO HAVE 
BEEN MADE AND TO BE PERFORMABLE IN AND SHALL BE GOVERNED BY AND CONSTRUED IN 
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS WITHOUT REGARD TO ITS 
CONFLICTS OF LAWS PRINCIPLES.

     Section 6.06. SUCCESSORS AND ASSIGNS. This Amendment is binding upon and 
shall inure to the benefit of the parties hereto and their respective 
successors, assigns, heirs, executors, and legal representatives except that 
none of the parties hereto other than Bank may assign or transfer any of its 
rights or obligations hereunder without the prior written consent of Bank.

     Section 6.07. COUNTERPARTS. This Amendment may be executed in one or 
more counterparts, each of which when so executed shall be deemed to be an 
original, but all of which when taken together shall constitute one and the 
same instrument.

     Section 6.08. HEADINGS. The headings, captions, and arrangements used in 
this Amendment are for convenience only and shall not affect the 
interpretation of this Amendment.

     Section 6.09. CONFLICTING PROVISIONS. If any provision of the Loan 
Agreement as amended hereby conflicts with any provision of any other Loan 
Document, the provision in the Loan Agreement shall control.

     SECTiON 6.10.  ENTIRE AGREEMENT. THIS AMENDMENT, THE LOAN AGREEMENT AND 
All OTHER LOAN DOCUMENTS EXECUTED AND 

                                      -4-
<PAGE>

DELIVERED IN CONNECTION WITH AND PURSUANT TO THIS AMENDMENT AND THE LOAN 
AGREEMENT REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE 
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL 
AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE 
PARTIES.

     EXECUTED as of the date first written above.

                                               BANK ONE, TEXAS, NATIONAL
                                               ASSOCIATION


                                               By:
                                                  --------------------------
                                               Name:
                                                    ------------------------
                                               Title:    
                                                     -----------------------



                                               CAPROCK COMMUNICATIONS CORP.


                                               By: /s/ Jere W. Thompson, Jr.
                                                  --------------------------
                                               Its: President
                                                   -------------------------


                                      -5-
<PAGE>

                           RATIFICATION BY GUARANTORS


     Each of Jere W Thompson, Jr., Timothy W. Rogers, Timothy M. Terrell and 
Scot L. Roberts (each a "GUARANTOR"), executed an Unlimited Guaranty dated on 
or about March 9, 1996 (the "GUARANTY") for the benefit of Bank. Each 
Guarantor hereby (i) ratifies and confirms the terms and conditions of his 
Guaranty and agrees that such Guaranty is and shall continue in full force 
and effect for the benefit of Bank, (ii) agrees that neither this Amendment 
nor the transactions contemplated hereby shall in any manner affect or impair 
such Guaranty and (iii) acknowledges that the Obligations covered by the 
Guaranty include, without limitation, the short term loan contemplated by 
this Amendment.



                                               /s/ Jere W. Thompson, Jr.
                                               ---------------------------
                                               Jere W. Thompson, Jr.



                                               /s/ Timothy W. Rogers
                                               ---------------------------
                                               Timothy W. Rogers



                                               /s/ Timothy M. Terrell
                                               ---------------------------
                                               Timothy M. Terrell



                                               /s/ Scott L. Roberts
                                               ---------------------------
                                               Scott L. Roberts



                                      -6-
<PAGE>
                                       
                               AMENDMENT FOUR TO
                          LOAN AND SECURITY AGREEMENT

     THIS AMENDMENT FOUR TO LOAN AND SECURITY AGREEMENT (this "AMENDMENT"), 
dated as of March 31, 1997, is entered into by and among BANK ONE, TEXAS, 
NATIONAL ASSOCIATION ("BANK") and CAPROCK COMMUNICATIONS CORP., a Texas 
corporation ("BORROWER").

                                    RECITALS

     A.   Borrower and Bank entered into that certain Loan and Security 
Agreement, dated March 14, 1996, as amended by Amendment One dated August 27, 
1996, Amendment Two dated October 31, 1996, and Amendment Three dated 
February 28, 1997 (the "LOAN AGREEMENT").

     B.   Bank and Borrower desire to amend the Loan Agreement as herein set 
forth.

     NOW, THEREFORE, in consideration of the premises herein contained and 
other good and valuable consideration, the receipt and sufficiency of which 
are hereby acknowledged by all parties, the parties hereto, intending to be 
legally bound, agree as follows:

                                   ARTICLE I
                                  DEFINITIONS

     Section 1.01. DEFINITIONS. Capitalized terms used in this Amendment, to 
the extent not otherwise defined herein, shall have the same definitions 
assigned to such terms in the Loan Agreement, as amended hereby.

                                   ARTICLE II
                        AMENDMENTS TO THE LOAN AGREEMENT

     Section 2.01. AMENDMENT OF SECTION 1(g). SECTION 1(g) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

          "(g) 'BORROWING BASE' shall mean, as of any date of determination, the
     LESSER of (i) the sum of $ 1,550,000 LESS the Letter of Credit Exposure, or
     (ii) the sum of (1) the product of (A) the Accounts Advance Rate and (B)
     Debtor's Eligible Accounts, PLUS (2) from the date hereof through May 31,
     1997, the lesser of (A) $500,000 and (B) 50% of Debtor's total accrued but
     unbilled accounts receivable (PROVIDED that, notwithstanding what the
     calculation would otherwise be, the amount determined under this clause (2)
     shall be ZERO for the sixth day of each month through the twenty-fifth day
     of each month inclusive), LESS (3) the Letter of Credit Exposure, LESS (4)
     the Reserve, all determined as of such date of determination."

                                      -1-
<PAGE>

     Section 2.02. AMENDMENT OF SECTION 1(x). SECTION 1(x) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

          "(x) 'LETTER OF CREDIT' means, individually, any letter of credit
     issued by Secured Party pursuant hereto, and any renewal or extension of
     any of the foregoing, and 'LETTERS OF CREDIT' means all such letters of
     credit collectively."

     Section 2.03. AMENDMENT OF SECTION 1(bb). SECTION 1(bb) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

          "(bb) 'MATURITY DATE' shall mean June 30, 1997."

     Section 2.04. AMENDMENT OF SECTION 2(b). SECTION 2(b) of the Loan 
Agreement is hereby amended by deleting clause (i) thereof in its entirety 
and substituting therefor the following:

     "(i) aggregate Letter of Credit Exposure at the time (including the amount
     of the requested Letter of Credit) does not exceed $100,000,"

     Section 2.05. AMENDMENT OF SECTION 11. SECTION 11 of the Loan Agreement 
is hereby amended by adding the following Section 11(v) thereto:

          "(v) If Debtor violates any of the covenants described in SECTIONS
     12(o), (p), (q), or (r) hereof, Debtor shall issue at least $200,000 of
     common stock for cash consideration within 30 days after the occurrence of
     such violation."

     Section 2.06. AMENDMENT OF SECTION 12(o). SECTION 12(o) of the Loan 
Agreement is hereby amended as of March 31, 1997 by deleting the present such 
subsection in its entirety and substituting therefor the following:

          "(o) Debtor will not suffer or permit its Tangible Leverage Ratio to
     exceed 5.75 to 1.0 as of the end of any month."

     Section 2.07. AMENDMENT OF SECTION 12(p). SECTION 12(p) of the Loan 
Agreement is hereby amended as of March 31, 1997 by deleting the present such 
subsection in its entirety and substituting therefor the following:

          "(p) Debtor will not suffer or permit its Tangible Net Worth to be
     less than $1,200,000.00 as of the end of any month."

     Section 2.08. AMENDMENT OF SECTION 12(q). SECTION 12(q) of the Loan 
Agreement is hereby amended as of March 31, 1997 by deleting the present such 
subsection in its entirety and substituting therefor the following:

                                      -2-
<PAGE>

          "(q) Debtor will not suffer or permit its Fixed Charge Coverage Ratio
     as of any month end, calculated from the beginning of the fiscal year to
     such month-end, to be less than 1.1 to 1.0."

     Section 2.09. AMENDMENT OF SECTION 12(r). SECTION 12(r) of the Loan 
Agreement is hereby amended as of March 31, 1997 by deleting the present such 
subsection in its entirety and substituting therefor the following:

          "(r) Debtor will not suffer or permit its Interest Coverage Ratio as
     of any month end, calculated from the beginning of the fiscal year to such
     month-end, to be less than 2.0 to 1.0."

                                  ARTICLE III
                              CONDITIONS PRECEDENT

     Section 3.01. CONDITIONS PRECEDENT. The effectiveness of this Amendment 
is subject to the condition precedent that Bank shall have received (or 
waived receipt of) the following, each duly executed and delivered and in 
form and substance and dated as of a date satisfactory to Bank and its legal 
counsel, or that the following shall be fulfilled, as the case may be:

          (a)  The representations and warranties contained herein and in all
     other Loan Documents shall be true and correct as of the date hereof as if
     made on the date hereof;

          (b)  No Default (others than those expressly waived by the terms
     hereof) or Event of Default shall have occurred and be continuing;

          (c)  Bank shall have executed this Amendment;

          (d)  Bank shall have received this Amendment and a Third Renewal and
     Extension Promissory Note in the original principal amount of $1,550,000,
     each duly executed by Borrower; and

          (e)  All corporate proceedings taken in connection with the
     transactions contemplated by this Amendment and all documents, instruments
     and other legal matters incident thereto shall be satisfactory to Bank and
     its legal counsel in their sole discretion.

                                   ARTICLE IV
                 RATIFICATIONS, REPRESENTATIONS, AND WARRANTIES

     Section 4.01. RATIFICATIONS BY BORROWER. The terms and provisions set 
forth in this Amendment shall modify and supersede all inconsistent terms and 
provisions set forth in the Loan Agreement and, except as expressly modified 
and superseded by this Amendment, the terms and provisions of the Loan 
Agreement are ratified and confirmed and shall continue in full force and 
effect. The Loan Agreement as amended by this Amendment shall continue to be 
legal, valid, binding and enforceable in accordance with its terms.

                                      -3-
<PAGE>

     Section 4.02. RENEWAL AND EXTENSION OF SECURITY INTERESTS AND 
ASSIGNMENTS. Borrower hereby renews and affirms the liens and security 
interests created and granted in the Loan Agreement and all other Loan 
Documents. Borrower agrees that this Amendment shall in no manner affect or 
impair the liens and security interests securing the Obligations, and that 
such liens and security interests shall not in any manner be waived, the 
purposes of this Amendment being to modify the Loan Agreement as herein 
provided, and to carry forward all liens and security interests securing 
same, which are acknowledged by Borrower to be valid and subsisting.

     Section 4.03. REPRESENTATIONS AND WARRANTIES. Borrower represents and 
warrants to Bank as follows: (i) the execution, delivery and performance of 
this Amendment and any and all other Loan Documents executed and/or delivered 
in connection herewith have been authorized by all requisite corporate action 
on the part of Borrower and will not violate the articles of incorporation or 
bylaws of Borrower or any agreement to which Borrower is a party; (ii) the 
representations and warranties contained in the Loan Agreement and any other 
Loan Document are true and correct on and as of the date hereof as though 
made on and as of the date hereof, (iii) no Default or Event of Default under 
the Loan Agreement has occurred and is continuing; and (iv) Borrower is in 
full compliance with all covenants and agreements contained in the Loan 
Agreement, as amended hereby.

                                   ARTICLE V
                                 MISCELLANEOUS

     Section 5.01. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All 
representations and warranties made in the Loan Agreement or any other Loan 
Document, including without limitation, any Loan Document furnished in 
connection with this Amendment, shall survive the execution and delivery of 
this Amendment and the other Loan Documents, and no investigation by Bank or 
any closing shall affect such representations and warranties or the right of 
Bank to rely thereon.

     Section 5.02. REFERENCE TO LOAN AGREEMENT. Each of the Loan Documents, 
including the Loan Agreement and any and all other agreements, documents or 
instruments now or hereafter executed and delivered pursuant to the terms 
hereof or pursuant to the terms of the Loan Agreement as amended hereby, are 
hereby amended so that any reference in such Loan Documents to the Loan 
Agreement shall mean a reference to the Loan Agreement as amended hereby.

     Section 5.03. EXPENSES OF BANK. Borrower agrees to pay on demand all 
costs and expenses incurred by Bank in connection with the preparation, 
negotiation and execution of this Amendment and the other Loan Documents 
executed pursuant hereto and any and all amendments, modifications, and 
supplements thereto, including, without limitation, the costs and fees of 
Bank's legal counsel, and all costs and expenses incurred by Bank in 
connection with the enforcement or preservation of any rights under the Loan 
Agreement, as amended hereby, or any other Loan Document, including, without 
limitation, the reasonable costs and fees of Bank's legal counsel.

                                      -4-
<PAGE>

     Section 5.04. SEVERABILITY. Any provision of this Amendment held by a 
court of competent jurisdiction to be invalid or unenforceable shall not 
impair or invalidate the remainder of this Amendment and the effect thereof 
shall be confined to the provision so held to be invalid or unenforceable.

     SECTION 5.05.  APPLICABLE LAW. THIS AMENDMENT SHALL BE DEEMED TO HAVE 
BEEN MADE AND TO BE PERFORMABLE IN AND SHALL BE GOVERNED BY AND CONSTRUED IN 
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS WITHOUT REGARD TO ITS 
CONFLICTS OF LAWS PRINCIPLES.

     Section 5.06. SUCCESSORS AND ASSIGNS. This Amendment is binding upon and 
shall inure to the benefit of the parties hereto and their respective 
successors, assigns, heirs, executors, and legal representatives, except that 
none of the parties hereto other than Bank may assign or transfer any of its 
rights or obligations hereunder without the prior written consent of Bank.

     Section 5.07. COUNTERPARTS. This Amendment may be executed in one or 
more counterparts, each of which when so executed shall be deemed to be an 
original, but all of which when taken together shall constitute one and the 
same instrument.

     Section 5.08. HEADINGS. The headings, captions, and arrangements used in 
this Amendment are for convenience only and shall not affect the 
interpretation of this Amendment.

     Section 5.09. CONFLICTING PROVISIONS. If any provision of the Loan 
Agreement as amended hereby conflicts with any provision of any other Loan 
Document, the provision in the Loan Agreement shall control.

     SECTION 5.10. ENTIRE AGREEMENT. THIS AMENDMENT, THE LOAN AGREEMENT AND 
ALL OTHER LOAN DOCUMENTS EXECUTED AND DELIVERED IN CONNECTION WITH AND 
PURSUANT TO THIS AMENDMENT AND THE LOAN AGREEMENT REPRESENT THE FINAL 
AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF 
PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE 
ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

     EXECUTED as of the date first written above.

                                     BANK ONE, TEXAS, NATIONAL
                                       ASSOCIATION



                                     By:
                                        -----------------------
                                     Name:
                                          ---------------------
                                     Title:
                                           --------------------


                                      -5-
<PAGE>

                                     CAPROCK COMMUNICATIONS CORP.


                                     By: /s/ Jere W. Thompson, Jr.
                                        --------------------------
                                     Its: President
                                         -------------------------


                           RATIFICATION BY GUARANTORS

     Each of Jere W. Thompson, Jr., Timothy W. Rogers, Timothy M. Terrell and 
Scott L. Roberts (each a "GUARANTOR"), executed an Unlimited Guaranty, dated 
on or about March 9, 1996 (the "GUARANTY") for the benefit of Bank. Each 
Guarantor hereby (i) ratifies and confirms the terms and conditions of his 
Guaranty and agrees that such Guaranty is and shall continue in full force 
and effect for the benefit of Bank, (ii) agrees that neither this Amendment 
nor the transactions contemplated hereby shall in any manner affect or impair 
such Guaranty and (iii) acknowledges that the Obligations covered by the 
Guaranty include, without limitation, the short term loan contemplated by 
this Amendment.



                                     /s/ Jere W. Thompson, Jr.
                                     ------------------------------------
                                     Jere W. Thompson, Jr.



                                     /s/ Timothy W. Rogers
                                     ------------------------------------
                                     Timothy W. Rogers



                                     /s/ Timothy M. Terrell
                                     ------------------------------------
                                     Timothy M. Terrell



                                     /s/ Scott L. Roberts
                                     ------------------------------------
                                     Scott L. Roberts


                                      -6-
<PAGE>

                 AMENDMENT FIVE TO LOAN AND SECURITY AGREEMENT

     THIS AMENDMENT FIVE TO LOAN AND SECURITY AGREEMENT (this "AMENDMENT"), 
dated as of June 30, 1997, is entered into by and between BANK ONE, TEXAS, 
NATIONAL ASSOCIATION ("BANK") and CAPROCK COMMUNICATIONS CORP., a Texas 
corporation ("BORROWER").

                                    RECITALS

     A.   Borrower and Bank entered into that certain Loan and Security 
Agreement, dated March 14, 1996, as amended by Amendment One, dated August 
27, 1996, Amendment Two, dated October 31, 1996, Amendment Three, dated 
February 28, 1997, and Amendment Four, dated as of March 31, 1997 (the "LOAN 
AGREEMENT").

     B.   Bank and Borrower desire to amend the Loan Agreement as herein set 
forth.

     NOW, THEREFORE, in consideration of the premises herein contained and 
other good and valuable consideration, the receipt and sufficiency of which 
are hereby acknowledged by all parties, the parties hereto, intending to be 
legally bound, agree as follows:

                                   ARTICLE I
                                  DEFINITIONS

     Section 1.01. DEFINITIONS. Capitalized terms used in this Amendment, to 
the extent not otherwise defined herein, shall have the same definitions 
assigned to such terms in the Loan Agreement, as amended hereby.

                                   ARTICLE II
                        AMENDMENT TO THE LOAN AGREEMENT

     Section 2.01. AMENDMENT OF SECTION 1(bb). SECTION 1(bb) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

          "(bb) 'MATURITY DATE' shall mean July 31, 1997."

                                  ARTICLE III
                                    WAIVERS

     Section 3.01. DEFAULTS. Debtor failed to provide Secured Party with its 
audited annual financial statements within 120 days after the end of fiscal 
year 1996, as required under SECTION 11(q) of the Loan Agreement. In 
addition, at March 31, 1997, Debtor failed to maintain (i) a Tangible 
Leverage Ratio of 5.75 to 1.0, as required under SECTION 12(o) of the Loan 
Agreement and (ii) a Fixed Charge Coverage Ratio of 1.1 to 1.0, as required 
under SECTION 12(q) of the Loan Agreement. Debtor also failed to issue at 
least $200,000 of common stock within 30 days after 

AMENDMENT FIVE TO LOAN AND SECURITY AGREEMENT - PAGE 1

<PAGE>

the occurrence of the violations of SECTIONS 12(o) and (q) of the Loan 
Agreement, as required under SECTION 11(v) of the Loan Agreement.

     Section 3.02. WAIVERS. Secured Party hereby waives the Events of Default 
resulting from Debtor's failure (i) to provide its audited annual financial 
statements within 120 days after the end of fiscal year 1996 as required 
under SECTION 11(q) of the Loan Agreement, (ii) to maintain the Tangible 
Leverage Ratio required under SECTION 12(o) of the Loan Agreement as of March 
31, 1997, (iii) to maintain the Fixed Charge Coverage Ratio required under 
SECTION 12(q) of the Loan Agreement as of March 31, 1997, and (iv) to issue 
at least $200,000 of common stock by April 30, 1997, as required under 
SECTION 11(v) of the Loan Agreement. Such waivers are expressly limited as 
set forth in this SECTION 3.02 and do not, and shall not, constitute a 
consent to or waiver of any other, additional, or future breach of SECTIONS 
11(q), 12(o), 12(q), or 11(v) of the Loan Agreement, or any other provision 
of the Loan Agreement or any other Loan Document.

                                   ARTICLE IV
                              CONDITIONS PRECEDENT

     Section 4.01. CONDITIONS PRECEDENT. The effectiveness of this Amendment 
is subject to the condition precedent that Bank shall have received (or 
waived receipt of) the following, each duly executed and delivered and in 
form and substance and dated as of a date satisfactory to Bank and its legal 
counsel, or that the following shall be fulfilled, as the case may be:

          (a)  The representations and warranties contained herein and in all
     other Loan Documents shall be true and correct as of the date hereof as if
     made on the date hereof;

          (b)  No Default (others than those expressly waived by the terms
     hereof) or Event of Default shall have occurred and be continuing;

          (c)  Bank shall have executed this Amendment;

          (d)  Bank shall have received this Amendment and a Fourth Renewal and
     Extension Promissory Note in the original principal amount of $1,550,000
     (the "RENEWAL NOTE"), each duly executed by Borrower; and

          (e)  All corporate proceedings taken in connection with the
     transactions contemplated by this Amendment and all documents, instruments
     and other legal matters incident thereto shall be satisfactory to Bank and
     its legal counsel in their sole discretion.

                                   ARTICLE V
                 RATIFICATIONS, REPRESENTATIONS, AND WARRANTIES

     Section 5.01. RATIFICATIONS BY BORROWER. The terms and provisions set 
forth in this Amendment shall modify and supersede all inconsistent terms and 
provisions set forth in the Loan Agreement and, except as expressly modified 
and superseded by this Amendment, the 

AMENDMENT FIVE TO LOAN AND SECURITY AGREEMENT - PAGE 2
<PAGE>

terms and provisions of the Loan Agreement are ratified and confirmed and 
shall continue in full force and effect. The Loan Agreement as amended by 
this Amendment shall continue to be legal, valid, binding and enforceable in 
accordance with its terms.

     Section 5.02. RENEWAL AND EXTENSION OF SECURITY INTERESTS AND 
ASSIGNMENTS. Borrower hereby renews and affirms the liens and security 
interests created and granted in the Loan Agreement and all other Loan 
Documents. Borrower agrees that this Amendment shall in no manner effect or 
impair the liens and security interests securing the Obligations, and that 
such liens and security interests shall not in any manner be waived, the 
purposes of this Amendment being to modify the Loan Agreement as herein 
provided, and to carry forward all liens and security interests securing 
same, which are acknowledged by Borrower to be valid and subsisting.

     Section 5.03. REPRESENTATIONS AND WARRANTIES. Borrower represents and 
warrants to Bank as follows: (i) the execution, delivery and performance of 
this Amendment and any and all other Loan Documents executed and/or delivered 
in connection herewith have been authorized by all requisite corporate action 
on the part of Borrower and will not violate the articles of incorporation or 
bylaws of Borrower or any agreement to which Borrower is a party; (ii) the 
representations and warranties contained in the Loan Agreement and any other 
Loan Document are true and correct on and as of the date hereof as though 
made on and as of the date hereof, (iii) no Default or Event of Default under 
the Loan Agreement has occurred and is continuing (except as described in 
SECTION 3.01 hereof); and (iv) Borrower is in full compliance with all 
covenants and agreements contained in the Loan Agreement, as amended hereby.

                                  ARTICLE VI
                                MISCELLANEOUS

     Section 6.01. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All 
representations and warranties made in the Loan Agreement or any other Loan 
Document, including without limitation, any Loan Document furnished in 
connection with this Amendment, shall survive the execution and delivery of 
this Amendment and the other Loan Documents, and no investigation by Bank or 
any closing shall affect such representations and warranties or the right of 
Bank to rely thereon.

     Section 6.02. REFERENCE TO LOAN AGREEMENT AND NOTE. Each of the Loan 
Documents, including the Loan Agreement and any and all other agreements, 
documents or instruments now or hereafter executed and delivered pursuant to 
the terms hereof or pursuant to the terms of the Loan Agreement as amended 
hereby, are hereby amended so that any reference in such Loan Documents to 
(i) the Loan Agreement shall mean a reference to the Loan Agreement as 
amended hereby and (ii) the revolving loan note shall mean a reference to the 
Renewal Note.

     Section 6.03. EXPENSES OF BANK. Borrower agrees to pay on demand all 
costs and expenses incurred by Bank in connection with the preparation, 
negotiation and execution of this Amendment and the other Loan Documents 
executed pursuant hereto and any and all amendments, modifications, and 
supplements thereto, including, without limitation, the costs and 

AMENDMENT FIVE TO LOAN AND SECURITY AGREEMENT - PAGE 3
<PAGE>

fees of Bank's legal counsel, and all costs and expenses incurred by Bank in 
connection with the enforcement or preservation of any rights under the Loan 
Agreement, as amended hereby, or any other Loan Document, including, without 
limitation, the reasonable costs and fees of Bank's legal counsel.

     Section 6.04. SEVERABILITY. Any provision of this Amendment held by a 
court of competent jurisdiction to be invalid or unenforceable shall not 
impair or invalidated remainder of this Amendment and the effect thereof 
shall be confined to the provision so held to be invalid or unenforceable.

     SECTION 6.05.  APPLICABLE LAW. THIS AMENDMENT SHALL BE DEEMED TO HAVE 
BEEN MADE AND TO BE PERFORMABLE IN AND SHALL BE GOVERNED BY AND CONSTRUED IN 
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS WITHOUT REGARD TO ITS 
CONFLICTS OF LAWS PRINCIPLES.

     Section 6.06. SUCCESSORS AND ASSIGNS. This Amendment is binding upon and 
shall inure to the benefit of the parties hereto and their respective 
successors, assigns, heirs, executors, and legal representatives, except that 
none of the parties hereto other than Bank may assign or transfer any of its 
rights or obligations hereunder without the prior written consent of Bank.

     Section 6.07. COUNTERPARTS. This Amendment may be executed in one or 
more counterparts, each of which when so executed shall be deemed to be an 
original, but all of which when taken together shall constitute one and the 
same instrument.

     Section 6.08. HEADINGS. The headings, captions, and arrangements used in 
this Amendment are for convenience only and shall not affect the 
interpretation of this Amendment.

     Section 6.09. CONFLICTING PROVISIONS. If any provision of the Loan 
Agreement as amended hereby conflicts with any provision of any other Loan 
Document, the provision in the Loan Agreement shall control.

     SECTION 6.10.  ENTIRE AGREEMENT. THIS AMENDMENT, THE LOAN AGREEMENT AND 
ALL OTHER LOAN DOCUMENTS EXECUTED AND DELIVERED IN CONNECTION WITH AND 
PURSUANT TO THIS AMENDMENT AND THE LOAN AGREEMENT REPRESENT THE FINAL 
AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF 
PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE 
ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.




AMENDMENT FIVE TO LOAN AND SECURITY AGREEMENT - PAGE 4
<PAGE>

     EXECUTED as of the date first written above.

                                     BANK ONE, TEXAS, NATIONAL
                                     ASSOCIATION


                                     By: /s/ GINA A. NORRIS
                                        ---------------------------------
                                     Name: Gina A. Norris
                                          -------------------------------
                                     Title: Vice President
                                           ------------------------------



                                     CAPROCK COMMUNICATIONS CORP.


                                     By: /s/ JERE W. THOMPSON, JR.
                                        ---------------------------------
                                     Name: Jere W. Thompson, Jr.
                                          -------------------------------
                                     Title: President
                                           ------------------------------


                           RATIFICATION BY GUARANTORS

     Each of Jere W. Thompson, Jr., Timothy W. Rogers, Timothy M. Terrell and 
Scott L. Roberts (each a "GUARANTOR"), executed an Unlimited Guaranty, dated 
on or about March 9, 1996 (the "GUARANTY") for the benefit of Bank. Each 
Guarantor hereby (i) ratifies and confirms the terms and conditions of his 
Guaranty, (ii) agrees that such Guaranty is and shall continue in full force 
and effect for the benefit of Bank, and (iii) agrees that neither this 
Amendment nor the transactions contemplated hereby shall in any manner affect 
or impair such Guaranty.



                                     /s/ JERE W.THOMPSON, JR.
                                     --------------------------------------
                                     Jere W.Thompson, Jr.



                                     /s/ TIMOTHY W. ROGERS
                                     --------------------------------------
                                     Timothy W. Rogers



                                     /s/ TIMOTHY M. TERRELL
                                     --------------------------------------
                                     Timothy M. Terrell



                                     /s/ SCOTT L. ROBERTS
                                     --------------------------------------
                                     Scott L. Roberts


AMENDMENT FIVE TO LOAN AND SECURITY AGREEMENT - PAGE 5

<PAGE>

                     AMENDMENT SIX TO LOAN AND SECURITY AGREEMENT

     THIS AMENDMENT SIX TO LOAN AND SECURITY AGREEMENT (this "AMENDMENT"), dated
as of July 31, 1997, is entered into by and between BANK ONE, TEXAS, NATIONAL
ASSOCIATION ("BANK") and CAPROCK COMMUNICATIONS CORP., a Texas corporation
("BORROWER").

                                       RECITALS

     A.  Borrower and Bank entered into that certain Loan and Security
Agreement, dated March 14, 1996, as amended by Amendment One, dated August 27,
1996, Amendment Two, dated October 31, 1996, Amendment Three, dated February 28,
1997, Amendment Four, dated as of March 31, 1997, and Amendment Five, dated as
of June 30, 1997 (the "LOAN AGREEMENT").

     B.   Bank and Borrower desire to amend the Loan Agreement as herein set
forth.

     NOW, THEREFORE, in consideration of the premises herein contained and other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged by all parties, the parties hereto, intending to be legally bound,
agree as follows:

                                      ARTICLE I
                                     DEFINITIONS

     Section 1.01. DEFINITIONS. Capitalized terms used in this Amendment, to the
extent not otherwise defined herein, shall have the same definitions assigned to
such terms in the Loan Agreement, as amended hereby.

                                      ARTICLE II
                           AMENDMENTS TO THE LOAN AGREEMENT

     Section 2.01. AMENDMENT OF SECTION 1(bb). SECTION 1(bb) of the Loan
Agreement is hereby amended by deleting the present such subsection in its
entirety and substituting therefor the following:

          "(bb) 'MATURITY DATE' shall mean December 31, 1997."

     Section 2.02. AMENDMENT OF SECTION 12(o). SECTION 12(o) of the Loan
Agreement is hereby amended as of July 31, 1997, by deleting the present such
subsection in its entirety and substituting therefor the following:

          "(o) Debtor will not suffer or permit its Tangible Leverage Ratio to
     exceed 5.0 to 1.0 as of the end of any month."


AMENDMENT SIX TO LOAN AND SECURITY AGREEMENT - PAGE 1
- --------------------------------------------

<PAGE>

     Section 2.03. AMENDMENT OF SECTION 12(q). SECTION 12(q) of the Loan
Agreement is hereby amended as of July 31, 1997, by deleting the present such
subsection in its entirety and substituting therefor the following:

          "(q) Debtor will not suffer or permit its Fixed Charge Coverage Ratio
     as of any month end, calculated from the beginning of the fiscal year to
     such month-end, to be less than 1.2 to 1.0."


                                     ARTICLE III
                                 CONDITIONS PRECEDENT

     Section 3.01. CONDITIONS PRECEDENT. The effectiveness of this Amendment is
subject to the condition precedent that Bank shall have received (or waived
receipt of) the following, each duly executed and delivered and in form and
substance and dated as of a date satisfactory to Bank and its legal counsel, or
that the following shall be fulfilled, as the case may be:

          (a)  The representations and warranties contained herein and in all
     other Loan Documents shall be true and correct as of the date hereof as if
     made on the date hereof;

          (b)  No Default (others than those expressly waived by the terms
     hereof) or Event of Default shall have occurred and be continuing;

          (c)  Bank shall have executed this Amendment;

          (d)  Bank shall have received this Amendment and a Fifth Renewal and
     Extension Promissory Note in the original principal amount of $1,550,000
     (the "RENEWAL NOTE"), each duly executed by Borrower; and

          (e)  All corporate proceedings taken in connection with the
     transactions contemplated by this Amendment and all documents, instruments
     and other legal matters incident thereto shall be satisfactory to Bank and
     its legal counsel in their sole discretion.

                                      ARTICLE IV
                    RATIFICATIONS, REPRESENTATIONS, AND WARRANTIES

     Section 4.01. RATIFICATIONS BY BORROWER. The terms and provisions set forth
in this Amendment shall modify and supersede all inconsistent terms and
provisions set forth in the Loan Agreement and, except as expressly modified and
superseded by this Amendment, the terms and provisions of the Loan Agreement are
ratified and confirmed and shall continue in full force and effect. The Loan
Agreement as amended by this Amendment shall continue to be legal, valid,
binding and enforceable in accordance with its terms.


     Section 4.02. RENEWAL AND EXTENSION OF SECURITY INTERESTS AND ASSIGNMENTS.
Borrower hereby renews and affirms the liens and security interests created and
granted in the Loan Agreement and all other Loan Documents. Borrower agrees that
this Amendment shall in no 


AMENDMENT SIX TO LOAN AND SECURITY AGREEMENT - PAGE 2
- --------------------------------------------

<PAGE>

manner affect or impair the liens and security interests securing the 
Obligations, and that such liens and security interests shall not in any 
manner be waived, the purposes of this Amendment being to modify the Loan 
Agreement as herein provided, and to carry forward all liens and security 
interests securing same, which are acknowledged by Borrower to be valid and 
subsisting.

     Section 4.03. REPRESENTATIONS AND WARRANTIES. Borrower represents and
warrants to Bank as follows: (i) the execution, delivery and performance of this
Amendment and any and all other Loan Documents executed and/or delivered in
connection herewith have been authorized by all requisite corporate action on
the part of Borrower and will not violate the articles of incorporation or
bylaws of Borrower or any agreement to which Borrower is a party; (ii) the
representations and warranties contained in the Loan Agreement and any other
Loan Document are true and correct on and as of the date hereof as though made
on and as of the date hereof; (iii) no Default or Event of Default under the
Loan Agreement has occurred and is continuing; and (iv) Borrower is in full
compliance with all covenants and agreements contained in the Loan Agreement, as
amended hereby.

                                      ARTICLE V
                                    MISCELLANEOUS

     Section 5.01. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All
representations and warranties made in the Loan Agreement or any other Loan
Document, including without limitation, any Loan Document furnished in
connection with this Amendment, shall survive the execution and delivery of this
Amendment and the other Loan Documents, and no investigation by Bank or any
closing shall affect such representations and warranties or the right of Bank to
rely thereon.

     Section 5.02. REFERENCE TO LOAN AGREEMENT AND NOTE. Each of the Loan
Documents, including the Loan Agreement and any and all other agreements,
documents or instruments now or hereafter executed and delivered pursuant to the
terms hereof or pursuant to the terms of the Loan Agreement as amended hereby,
are hereby amended so that any reference in such Loan Documents to (i) the Loan
Agreement shall mean a reference to the Loan Agreement as amended hereby and
(ii) the revolving loan note shall mean a reference to the Renewal Note.

     Section 5.03. EXPENSES OF BANK. Borrower agrees to pay on demand all costs
and expenses incurred by Bank in connection with the preparation, negotiation
and execution of this Amendment and the other Loan Documents executed pursuant
hereto and any and all amendments, modifications, and supplements thereto,
including, without limitation, the costs and fees of Bank's legal counsel, and
all costs and expenses incurred by Bank in connection with the enforcement or
preservation of any rights under the Loan Agreement, as amended hereby, or any
other Loan Document, including, without limitation, the reasonable costs and
fees of Bank's legal counsel.

     Section 5.04. SEVERABILITY. Any provision of this Amendment held by a court
of competent jurisdiction to be invalid or unenforceable shall not impair or
invalidate the remainder 


AMENDMENT SIX TO LOAN AND SECURITY AGREEMENT - PAGE 3
- --------------------------------------------

<PAGE>

of this Amendment and the effect thereof shall b confined to the provision so 
held to be invalid or unenforceable.

     SECTION 5.05.  APPLICABLE LAW. THIS AMENDMENT SHALL BE DEEMED TO HAVE BEEN
MADE AND TO BE PERFORMABLE IN AND SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS WITHOUT REGARD TO ITS CONFLICTS
OF LAWS A, PRINCIPLES.

     Section 5.06. SUCCESSORS AND ASSIGNS. This Amendment is binding upon and
shall inure to the benefit of the parties hereto and their respective
successors, assigns, heirs, executors, and legal representatives, except that
none of the parties hereto other than Bank may assign or transfer any of its
rights or obligations hereunder without the prior written consent of Bank.

     Section 5.07. COUNTERPARTS. This Amendment may be executed in one or more
counterparts, each of which when so executed shall be deemed to be an original,
but all of which when taken together shall constitute one and the same
instrument.

     Section 5.08. HEADINGS. The headings, captions, and arrangements used in
this Amendment are for convenience only and shall not affect the interpretation
of this Amendment.

     Section 5.09. CONFLICTING PROVISIONS. If any provision of the Loan
Agreement as amended hereby conflicts with any provision of any other Loan
Document, the provision in the Loan Agreement shall control.

     SECTION 5.10.  ENTIRE AGREEMENT. THIS AMENDMENT, THE LOAN AGREEMENT AND ALL
OTHER LOAN DOCUMENTS EXECUTED AND DELIVERED IN CONNECTION WITH AND PURSUANT TO
THIS AMENDMENT AND THE LOAN AGREEMENT REPRESENT THE FINAL AGREEMENT BETWEEN THE
PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR
SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL
AGREEMENTS BETWEEN THE PARTIES.


     EXECUTED as of the date first written above.


                                       BANK ONE, TEXAS, NATIONAL ASSOCIATION


                                       By: /s/ GINA A. NORRIS
                                          -------------------------------------
                                       Name: Gina A. Norris
                                            -----------------------------------
                                       Title: Vice President
                                             ----------------------------------





AMENDMENT SIX TO LOAN AND SECURITY AGREEMENT - PAGE 4
- --------------------------------------------

<PAGE>

                                       CAPROCK COMMUNICATIONS CORP.


                                       By: /s/ JERE THOMPSON, JR.
                                          -------------------------------------
                                       Name: Jere Thompson, Jr.
                                            -----------------------------------
                                       Title: President
                                             ----------------------------------



                              RATIFICATION BY GUARANTORS

     Each of Jere W. Thompson, Jr., Timothy W. Rogers, Timothy M. Terrell and
Scott L. Roberts (each a "GUARANTOR"), executed an Unlimited Guaranty, dated on
or about March 9, 1996 (the "GUARANTY") for the benefit of Bank. Each Guarantor
hereby (i) ratifies and confirms the terms and conditions of his Guaranty, (ii)
agrees that such Guaranty is and shall continue in full force and effect for the
benefit of Bank, and (iii) agrees that neither this Amendment nor the
transactions contemplated hereby shall in any manner affect or impair such
Guaranty.


                                       /s/ JERE W. THOMPSON, JR.
                                       -------------------------------------
                                       Jere W.Thompson, Jr.


                                       /s/ TIMOTHY W. ROGERS
                                       -------------------------------------
                                       Timothy W. Rogers


                                       /s/ TIMOTHY M. TERRELL
                                       -------------------------------------
                                       Timothy M. Terrell


                                       /s/ SCOTT L. ROBERTS
                                       -------------------------------------
                                       Scott L. Roberts







AMENDMENT SIX TO LOAN AND SECURITY AGREEMENT - PAGE 5
- --------------------------------------------

<PAGE>

                 AMENDMENT SEVEN TO LOAN AND SECURITY AGREEMENT

     THIS AMENDMENT SEVEN TO LOAN AND SECURITY AGREEMENT (this "AMENDMENT"), 
dated as of December 31, 1997, is entered into by and between BANK ONE, 
TEXAS, NATIONAL ASSOCIATION ("BANK") and CAPROCK COMMUNICATIONS CORP., a 
Texas corporation ("BORROWER").

                                    RECITALS

     A.   Borrower and Bank entered into that certain Loan and Security 
Agreement, dated March 14, 1996, as amended by Amendment One, dated August 
27, 1996, Amendment Two, dated October 31, 1996, Amendment Three, dated 
February 28, 1997, Amendment Four, dated as of March 31, 1997, Amendment 
Five, dated as of June 30, 1997, and Amendment Six, dated as of July 31, 1997 
(the "LOAN AGREEMENT").

     B.   Bank and Borrower desire to amend the Loan Agreement as herein set 
forth.

     NOW, THEREFORE, in consideration of the premises herein contained and 
other good and valuable consideration, the receipt and sufficiency of which 
are hereby acknowledged by all parties, the parties hereto, intending to be 
legally bound, agree as follows:

                                   ARTICLE I
                                  DEFINITIONS

          Section 1.01. DEFINITIONS. Capitalized terms used in this 
Amendment, to the extent not otherwise defined herein, shall have the same 
definitions assigned to such terms in the Loan Agreement, as amended hereby.

                                   ARTICLE II
                        AMENDMENTS TO THE LOAN AGREEMENT

     Section 2.01. AMENDMENT OF SECTION 1(g). SECTION 1(g) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

          "(g) 'BORROWING BASE' shall mean, as of any date of determination, the
     lesser of (i) the sum of $2,500,000 LESS the Letter of Credit Exposure, or
     (ii) the sum of (1) the product of (A) the Accounts Advance Rate and
     (B) Debtor's Eligible Accounts, LESS (2) the Letter of Credit Exposure, 
     LESS (3) the Reserve, all determined as of such date of determination."

     Section 2.02. AMENDMENT OF SECTION 1(bb). SECTION 1(bb) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

AMENDMENT SEVEN TO LOAN AND SECURITY AGREEMENT - PAGE 1
<PAGE>

          "(bb) 'MATURITY DATE' shall mean December 31, 1998."

     Section 2.03. AMENDMENT OF SECTION 1(hh). SECTION 1(hh) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

          "(hh) 'REVOLVING LINE' means $2,500,000."

     Section 2.04. AMENDMENT OF SECTION 4(c). SECTION 4(c) of the Loan 
Agreement is hereby amended by deleting the last sentence thereof in its 
entirety and substituting the following in lieu thereof:

     "Subject to the terms of this section, all checks and other items received
     by Secured Party in payment of the Obligations secured hereby shall be
     subject to a clearance period of two (2) Business Days provided that the
     checks and other items are received at a time and in such a manner that
     will facilitate timely collection of funds."

     Section 2.05. AMENDMENT OF SECTION 12(n). SECTION 12(n) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

          "(n) Debtor will not make Capital Expenditures during any fiscal year
     which would in the aggregate exceed $3,000,000 for such year, provided that
     Debtor may not make Capital Expenditures during fiscal year 1998 which in
     the aggregate exceed $1,500,000 for such fiscal year (i) prior to the
     completion of the audit or review (which review shall include, without
     limitation, a review of Debtor's reserve for bad debts) of Debtor's 1997
     financial statements by KPMG Peat Marwick or other independent public
     accountants of recognized standing acceptable to Secured Party or (ii) if,
     as a result of such audit or review, either (a) Debtor's adjusted 1997 net
     income is less than $2,000,000 or (b) after giving effect to all
     adjustments, a Default or an Event of Default shall have occurred."

     Section 2.06. AMENDMENT OF SECTION 12(o). SECTION 12(o) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

          "(o) Debtor will not suffer or permit its Tangible Leverage Ratio to
     exceed 4.5 to 1.0 as of the end of any month."

     Section 2.07. AMENDMENT OF SECTION 12(p). SECTION 12(p) of the Loan 
Agreement is hereby amended by deleting the present such subsection in its 
entirety and substituting therefor the following:

          "(p) Debtor will not suffer or permit its Tangible Net Worth to be
     less than $2,000,000.00 as of the end of any month."

AMENDMENT SEVEN TO LOAN AND SECURITY AGREEMENT - PAGE 2
<PAGE>

     Section 2.08. AMENDMENT TO EXHIBIT A. EXHIBIT A to the Loan Agreement is 
hereby amended by deleting the present Exhibit A in its entirety and 
substituting therefor Exhibit A attached hereto.

                                  ARTICLE III
                              WAIVERS AND CONSENTS

     Section 3.01. DEFAULT. During fiscal year 1997, Debtor has made Capital 
Expenditures in excess of those permitted under SECTION 12(p) of the Loan 
Agreement.

     Section 3.02. WAIVER. Secured Party hereby waives the Event of Default 
resulting from Debtor's making Capital Expenditures in excess of those 
permitted under SECTION 12(p) of the Loan Agreement during fiscal year 1997. 
Such waiver is expressly limited to the breach of SECTION 12(p) for fiscal 
year 1997 and does not and shall not constitute a consent to or waiver of any 
other, additional, or future breach of SECTION 12(p) of the Loan Agreement, 
or any other provision of the Loan Agreement or any other Loan Document.

     Section 3.03. CONSENT. Under the terms of that certain Subordination 
Agreement (the "SUBORDINATION AGREEMENT"), dated as of March ___, 1997, 
executed by The Williamsburg Corporation ("WILLIAMSBURG"), Williamsburg may 
not receive any payments in respect of the Subordinated Debt (as defined in 
the Subordination Agreement), other than regularly scheduled payments of 
interest Borrower has requested Bank's consent to repay to Williamsburg the 
outstanding principal of and all accrued but unpaid interest on the 
Subordinated Debt, represented by that certain promissory note, executed by 
Borrower, payable to the order of Williamsburg, in the original principal 
amount of $521,835 (the "WILLIAMSBURG NOTE"). Bank hereby consents to 
Borrower's paying and Williamsburg's receiving the outstanding principal 
balance of and accrued but unpaid interest on the Williamsburg Note, provided 
that (i) no Default or Event of Default has occurred and is continuing or 
would occur immediately after giving effect to such payment and (ii) 
Williamsburg releases any and all liens it may have against any property of 
Borrower and any other collateral for the Subordinated Debt.

                                   ARTICLE IV
                              CONDITIONS PRECEDENT

     Section 4.01. CONDITIONS PRECEDENT. The effectiveness of this Amendment 
is subject to the condition precedent that Bank shall have received (or 
waived receipt of) the following, each duly executed and delivered and in 
form and substance and dated as of a date satisfactory to Bank and its legal 
counsel, or that the following shall be fulfilled, as the case may be:

          (a)  The representations and warranties contained herein and in all
     other Loan Documents shall be true and correct as of the date hereof as if
     made on the date hereof,

          (b)  No Default or Event of Default (other than that expressly waived
     by the terms hereof) shall have occurred and be continuing;

AMENDMENT SEVEN TO LOAN AND SECURITY AGREEMENT - PAGE 3
<PAGE>

          (c)  Bank shall have executed this Amendment;

          (d)  Bank shall have received this Amendment and a Sixth Renewal and
     Extension Promissory Note in the original principal amount of $2,500,000
     (the "RENEWAL NOTE"), each duly executed by Borrower;

          (e)  Bank shall have received a copy of a release of all liens
     securing any Subordinated Debt owing to Williamsburg, executed by
     Williamsburg;

          (f)  Bank shall have received UCC-3 termination statements, executed
     by Williamsburg, terminating all UCC-1 financing statements filed to
     perfect security interests in favor of Williamsburg securing the
     Subordinated Debt;

          (g)  Bank shall have received a Mutual Release, duly executed by each
     of Timothy W. Rogers, Timothy M. Terrell, and Scott L. Roberts; and

          (h)  All corporate proceedings taken in connection with the
     transactions contemplated by this Amendment and all documents, instruments
     and other legal matters incident thereto shall be satisfactory to Bank and
     its legal counsel in their sole discretion.

                                   ARTICLE V
                 RATIFICATIONS, REPRESENTATIONS AND WARRANTIES

     Section 5.01. RATIFICATIONS BY BORROWER. The terms and provisions set 
forth in this Amendment shall modify and supersede all inconsistent terms and 
provisions set forth in the Loan Agreement and, except as expressly modified 
and superseded by this Amendment, the terms and provisions of the Loan 
Agreement are ratified and confirmed and shall continue in full force and 
effect. The Loan Agreement as amended by this Amendment shall continue to be 
legal, valid, binding and enforceable in accordance with its terms.

     Section 5.02. RENEWAL AND EXTENSION OF SECURITY INTERESTS AND 
ASSIGNMENTS. Borrower hereby renews and affirms the liens and security 
interests created and granted in the Loan Agreement and all other Loan 
Documents. Borrower agrees that this Amendment shall in no manner affect or 
impair the liens and security interests securing the Obligations, and that 
such liens and security interests shall not in any manner be waived, the 
purposes of this Amendment being to modify the Loan Agreement as herein 
provided, and to carry forward all liens and security interests securing 
same, which are acknowledged by Borrower to be valid and subsisting.

     Section 5.03. REPRESENTATIONS AND WARRANTIES. Borrower represents and 
Warrants to Bank as follows: (i) the execution, delivery and performance of 
this Amendment and any and all other Loan Documents executed and/or delivered 
in connection herewith have been authorized by all requisite corporate action 
on the part of Borrower and will not violate the articles of incorporation or 
bylaws of Borrower or any agreement to which Borrower is a party; (ii) the 
representations and warranties contained in the Loan Agreement and any other 
Loan Document 

AMENDMENT SEVEN TO LOAN AND SECURITY AGREEMENT - PAGE 4
<PAGE>

are true and correct on and as of the date hereof as though made on and as of 
the date hereof, (iii) no Default or Event of Default under the Loan 
Agreement has occurred and is continuing (other than that expressly waived by 
the terms hereof); and (iv) Borrower is in full compliance with all covenants 
and agreements contained in the Loan Agreement, as amended hereby.

     Section 5.04. CORPORATE DOCUMENTS. Borrower hereby represents and 
warrants to Bank that Borrower's Articles of Incorporation and Bylaws have 
not been amended since Borrower's certification thereof under Officer's 
Certificate dated March 14, 1996, previously delivered to Bank in connection 
with the Loan Agreement.

                                   ARTICLE VI
                                 MISCELLANEOUS

     Section 6.01. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All 
representations and warranties made in the Loan Agreement or any other Loan 
Document, including without limitation, any Loan Document furnished in 
connection with this Amendment, shall survive the execution and delivery of 
this Amendment and the other Loan Documents, and no investigation by Bank or 
any closing shall affect such representations and warranties or the right of 
Bank to rely thereon.

     Section 6.02. REFERENCE TO LOAN AGREEMENT AND NOTE. Each of the Loan 
Documents, including the Loan Agreement and any and all other agreements, 
documents or instruments now or hereafter executed and delivered pursuant to 
the terms hereof or pursuant to the terms of the Loan Agreement as amended 
hereby, are hereby amended so that any reference in such Loan Documents to 
(i) the Loan Agreement shall mean a reference to the Loan Agreement as 
amended hereby and (ii) the revolving loan note shall mean a reference to the 
Renewal Note.

     Section 6.03. EXPENSES OF BANK. Borrower agrees to pay on demand all 
costs and expenses incurred by Bank in connection with the preparation, 
negotiation and execution of this Amendment and the other Loan Documents 
executed pursuant hereto and any and all amendments, modifications, and 
supplements thereto, including, without limitation, the costs and fees of 
Bank's legal counsel, and all costs and expenses incurred by Bank in 
connection with the enforcement or preservation of any rights under the Loan 
Agreement, as amended hereby, or any other Loan Document, including, without 
limitation, the reasonable costs and fees of Bank's legal counsel.

     Section 6.04. SEVERABILITY. Any provision of this Amendment held by a 
court of competent jurisdiction to be invalid or unenforceable shall not 
impair or invalidate the remainder of this Amendment and the effect thereof 
shall be confined to the provision so held to be invalid or unenforceable.

     SECTION 6.05.  APPLICABLE LAW. THIS AMENDMENT SHALL BE DEEMED TO HAVE BEEN
MADE AND TO BE PERFORMABLE IN AND SHALL BE GOVERNED BY AND CONSTRUED IN 
ACCORDANCE WITH THE LAWS OF THE 

AMENDMENT SEVEN TO LOAN AND SECURITY AGREEMENT - PAGE 5
<PAGE>

STATE OF TEXAS WITHOUT REGARD TO ITS CONFLICTS OF LAWS PRINCIPLES.

     Section 6.06. SUCCESSORS AND ASSIGNS. This Amendment is binding upon and 
shall inure to the benefit of the parties hereto and their respective 
successors, assigns, heirs, executors, and legal representatives, except that 
none of the parties hereto other than Bank may assign or transfer any of its 
rights or obligations hereunder without the prior written consent of Bank.

     Section 6.07. COUNTERPARTS. This Amendment may be executed in one or 
more counterparts, each of which when so executed shall be deemed to be an 
original, but all of which when taken together shall constitute one and the 
same instrument.

     Section 6.08. HEADINGS. The headings, captions, and arrangements used in 
this Amendment are for convenience only and shall not affect the 
interpretation of this Amendment.

     Section 6.09. CONFLICTING PROVISIONS. If any provision of the Loan 
Agreement as amended hereby conflicts with any provision of any other Loan 
Document, the provision in the Loan Agreement shall control.

     SECTION 6.10.  ENTIRE AGREEMENT. THE LOAN AGREEMENT AS AMENDED BY THIS 
AMENDMENT, THE RENEWAL NOTE, AND ALL OTHER LOAN DOCUMENTS EXECUTED AND 
DELIVERED IN CONNECTION WITH AND PURSUANT TO THIS AMENDMENT AND THE LOAN 
AGREEMENT REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE 
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL 
AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE 
PARTIES.

     EXECUTED as of the date first written above.

                                     BANK ONE, TEXAS, NATIONAL ASSOCIATION



                                     By:
                                        --------------------------------
                                     Name:
                                          ------------------------------
                                     Title:
                                           -----------------------------



                                     CAPROCK COMMUNICATIONS CORP.



                                     By: /s/ JERE W. THOMPSON, JR.
                                        --------------------------------
                                     Name: Jere W. Thompson, Jr.
                                          ------------------------------
                                     Title: President
                                           -----------------------------

AMENDMENT SEVEN TO LOAN AND SECURITY AGREEMENT - PAGE 6
<PAGE>

                           RATIFICATION BY GUARANTOR

     Jere W. Thompson, Jr. ("GUARANTOR"), executed an Unlimited Guaranty, 
dated on-or about March 9, 1996 (the "GUARANTY") for the benefit of Bank. 
Guarantor hereby (i) ratifies and confirms the terms and conditions of his 
Guaranty, (ii) agrees that such Guaranty is and shall continue in full force 
and effect for the benefit of Bank, and (iii) agrees that neither this 
Amendment nor the transactions contemplated hereby, including, without 
limitation, the release of the guarantees of Timothy W. Rogers, Timothy M. 
Terrell, and Scott L. Roberts, shall in any manner affect or impair such 
Guaranty.

                                     /s/ JERE W. THOMPSON, JR.
                                     -----------------------------------
                                     Jere W. Thompson, Jr.






AMENDMENT SEVEN TO LOAN AND SECURITY AGREEMENT - PAGE 7
<PAGE>

                                    EXHIBIT A


<PAGE>

                  SIXTH RENEWAL AND EXTENSION PROMISSORY NOTE

$2,500,000.00                                                  December 31, 1997

     FOR VALUE RECEIVED, on or before December 31, 1998 ("MATURITY DATE"), 
the undersigned and if more than one, each of them, jointly and severally 
(hereinafter referred to as "BORROWER"), promises to pay to the order of BANK 
ONE, TEXAS, NATIONAL ASSOCIATION ("BANK") at its offices in Dallas County, 
Texas, at 1717 Main Street, 3rd Floor, Dallas, Texas 75201, the principal 
amount of TWO MILLION FIVE HUNDRED THOUSAND AND NO/100 DOLLARS ($2,500,000.00) 
("TOTAL PRINCIPAL AMOUNT"), or such amount less than the Total Principal 
Amount which is outstanding from time to time if the total amount outstanding 
under this Promissory Note (this "NOTE") is less than the Total Principal 
Amount, together with interest on such portion of the Total Principal Amount 
which has been advanced to Borrower from the date advanced until paid at a 
fluctuating rate per annum which shall from day to day be equal to the lesser 
of (a) the Maximum Rate (as hereinafter defined), or (b) a rate ("CONTRACT 
RATE"), calculated on the basis of the actual days elapsed but computed as if 
each year consisted of 360 days, equal to the sum of (A) the Base Rate of 
interest ("BASE RATE") as established from time to time by Bank (which may 
not be the lowest, best or most favorable rate of interest which Bank may 
charge on loans to its customers) plus (B) two percent (2.00%), each change in 
the rate to be charged on this Note to become effective without notice to 
Borrower on the effective date of each change in the Maximum Rate or the Base 
Rate, as the case may be; provided, however, that (i) the Contract Rate shall 
be subject to reduction as provided in the Loan Agreement (as hereinafter 
defined) and (ii) if at any time the Contract Rate shall exceed the Maximum 
Rate, thereby causing the interest on this Note to be limited to the Maximum 
Rate, then any subsequent reduction in the Base Rate shall not reduce the 
rate of interest on this Note below the Maximum Rate until the total amount 
of interest accrued on this Note equals the amount of interest which would 
have accrued on this Note if the Contract Rate had at all times been in 
effect.

     The term "MAXIMUM RATE," as used herein, shall mean at the particular 
time in question the maximum rate of interest which, under applicable law, 
may then be charged on this Note. If such maximum rate of interest changes 
after the date hereof and this Note provides for a fluctuating rate of 
interest, the Maximum Rate shall be automatically increased or decreased, as 
the case may be, without notice to Borrower from time to time as of the 
effective date of each change in such maximum rate. If applicable law ceases 
to provide for such a maximum rate of interest, the Maximum Rate shall be 
equal to eighteen percent (18%) per annum. All capitalized terms used herein 
that are not defined herein shall have the meaning given them in that certain 
Loan and Security Agreement, dated as of March 14, 1996, by and between 
Borrower and Bank (as the same has been and may be amended, restated, 
renewed, extended, or otherwise modified, the "LOAN AGREEMENT").

     The principal of and all accrued but unpaid interest on this Note shall 
be due and payable as follows:

     (a)  interest shall be due and payable monthly as it accrues, commencing 
on the first day of January, 1998, and continuing on the first day of each 
successive month thereafter during the term of this Note; and

SIXTH RENEWAL AND EXTENSION PROMISSORY NOTE - PAGE 1
<PAGE>

     (b)  the outstanding principal balance of this Note, together with all 
accrued but unpaid interest, shall be due and payable on the Maturity Date.

     All mandatory prepayments of principal and accrued but unpaid interest 
thereon required to be made under the Loan Agreement shall be due and payable 
immediately unless otherwise provided in the Loan Agreement.

     To the extent that any interest is not paid on or before the day it 
becomes due and payable, Bank may, at its option, add such accrued interest 
to the principal of this Note. Notwithstanding anything herein to the 
contrary, upon an Event of Default (as hereinafter defined) or at maturity, 
whether by acceleration or otherwise, all principal of this Note shall, at 
the option of Bank, bear interest at the Default Rate until paid.

     This Note evidences obligations and indebtedness from time to time owing 
by Borrower to Bank pursuant to the Loan Agreement, and is secured by, INTER 
ALIA, the Collateral. The holder of this Note is entitled to the benefits and 
security provided in the Loan Documents.

     Under the Loan Agreement, Borrower may request advances and make 
payments hereunder from time to time, provided that it is understood and 
agreed that the aggregate principal amount outstanding from time to time 
hereunder shall not at any time exceed the Total Principal Amount. The unpaid 
balance of this Note shall increase and decrease with each new advance or 
payment hereunder, as the case may be. This Note shall not be deemed 
terminated or canceled prior to the Maturity Date, although the entire 
principal balance hereof may from time to time be paid in full. Borrower may 
borrow, repay and reborrow hereunder in accordance with the provisions of the 
Loan Agreement. All regularly scheduled payments of the indebtedness 
evidenced by this Note and by any of the other Loan Documents shall be 
applied first to any accrued but unpaid interest then due and payable 
hereunder or thereunder and then to the principal amount then due and 
payable. All non-regularly scheduled payments shall be applied to such 
indebtedness in such order and manner as the holder of this Note may from 
time to time determine in its sole discretion. All payments and prepayments 
of principal of or interest on this Note shall be made in lawful money of the 
United States of America in immediately available funds, at the address of 
Bank indicated above, or such other place as the holder of this Note shall 
designate in writing to Borrower. If any payment of principal of or interest 
on this Note shall become due on a day which is not a Business Day, such 
payment shall be made on the next succeeding Business Day and any such 
extension of time shall be included in computing interest in connection with 
such payment. The books and records of Bank shall be PRIMA FACIE evidence of 
all outstanding principal of and accrued and unpaid interest on this Note.

     Borrower agrees that no advances under this Note shall be used for 
personal, family or household purposes, and that all advances hereunder shall 
be used solely for business, commercial, investment or other similar purposes.

     Borrower agrees that upon the occurrence of any one or more Events of 
Default (as defined in the Loan Agreement), the holder of this Note may, at 
its option, without further notice or demand, (i) declare the outstanding 
principal balance of and accrued but unpaid interest on this Note at once due 
and payable, (ii) refuse to advance any additional amounts under this Note, 
(iii) foreclose all liens and security interests securing payment hereof, 
(iv) pursue any and all 

SIXTH RENEWAL AND EXTENSION PROMISSORY NOTE - PAGE 2
<PAGE>

other rights, remedies and recourses available to the holder hereof, 
including but not limited to any such rights, remedies or recourses under the 
Loan Documents, at law or in equity, or (v) pursue any combination of the 
foregoing.

     The failure to exercise the option to accelerate the maturity of this 
Note or any other right, remedy or recourse available to the holder hereof 
upon the occurrence of an Event of Default shall not constitute a waiver of 
the right of the holder of this Note to exercise the same at that time or at 
any subsequent time with respect to such Event of Default or any other Event 
of Default. The rights, remedies and recourses of the holder hereof, as 
provided in this Note and in any of the other Loan Documents, shall be 
cumulative and concurrent and may be pursued separately, successively or 
together as often as occasion therefore shall arise, at the sole discretion 
of the holder hereof.  The acceptance by the holder hereof of any payment 
under this Note which is less than the payment in full of all amounts due and 
payable at the time of such payment shall not (i) constitute a waiver of or 
impair, reduce, release or extinguish any right, remedy or recourse of the 
holder hereof, or nullify any prior exercise of any such right, remedy or 
recourse, or (ii) impair, reduce, release or extinguish the obligations of 
any party liable under any of the Loan Documents as originally provided 
herein or therein.

     This Note and all of the other Loan Documents are intended to be 
performed in accordance with, and only to the extent permitted by, all 
applicable usury laws. If any provision hereof or of any of the other Loan 
Documents or the application thereof to any person or circumstance shall, for 
any reason and to any extent, be invalid or unenforceable, neither the 
application of such provision to any other person or circumstance nor the 
remainder of the instrument in which such provision is contained shall be 
affected thereby and shall be enforced to the greatest extent permitted by 
law. It is expressly stipulated and agreed to be the intent of the holder 
hereof to at all times comply with the usury and other applicable laws now or 
hereafter governing the interest payable on the indebtedness evidenced by 
this Note. If the applicable law is ever revised, repealed or judicially 
interpreted so as to render usurious any amount called for under this Note or 
under any of the other Loan Documents, or contracted for, charged, taken, 
reserved or received with respect to the indebtedness evidenced by this Note, 
or if Bank's exercise of the option to accelerate the maturity of this Note, 
or if any prepayment by Borrower results in Borrower's having paid any 
interest in excess of that permitted by law, then it is the express intent of 
Borrower and Bank that all excess amounts theretofore collected by Bank be 
credited on the principal balance of this Note (or, if this Note and all 
other indebtedness arising under or pursuant to the other Loan Documents have 
been paid in full, refunded to Borrower), and the provisions of this Note and 
the other Loan Documents immediately be deemed reformed and the amounts 
thereafter collectable hereunder and thereunder reduced, without the 
necessity of the execution of any new document, so as to comply with the then 
applicable law, but so as to permit the recovery of the fullest amount 
otherwise called for hereunder or thereunder. All sums paid, or agreed to be 
paid, by Borrower for the use, forbearance, detention, taking, charging, 
receiving or reserving of the indebtedness of Borrower to Bank under this 
Note or arising under or pursuant to the other Loan Documents shall, to the 
maximum extent permitted by applicable law, be amortized, prorated, allocated 
and spread throughout the full term of such indebtedness until payment in 
full so that the rate or amount of interest on account of such indebtedness 
does not exceed the usury ceiling from time to time in effect and applicable 
to such indebtedness for so long as such indebtedness is outstanding. To the 
extent federal law permits Bank to contract for, charge or receive a greater 
amount of interest, Bank, will rely on federal law instead of the 

SIXTH RENEWAL AND EXTENSION PROMISSORY NOTE - PAGE 3
<PAGE>

Texas Finance Code, as supplemented by Texas Credit Title for the purpose of 
determining the Maximum Rate. Additionally, to the maximum extent permitted 
by applicable law now or hereafter in effect, Bank may, at its option and 
from time to time, implement any other method of computing the Maximum Rate 
under the Texas Finance Code, as supplemented by Texas Credit Title, or under 
other applicable law by giving notice, if required, to Borrower as provided 
by applicable law now or hereafter in effect. Notwithstanding anything to the 
contrary contained herein or in any of the other Loan Documents, it is not 
the intention of Bank to accelerate the maturity of any interest that has not 
accrued at the time of such acceleration or to collect unearned interest at 
the time of such acceleration.

     In no event shall Chapter 346 of the Texas Finance Code (which regulates 
certain revolving loan accounts and revolving tri-party accounts) apply to 
this Note. To the extent that Chapter 303 of the Texas Finance Code is 
applicable to this Note, the "weekly ceiling" specified in Chapter 303 is the 
applicable ceiling; provided that, if any applicable law permits greater 
interest, the law permitting the greatest interest shall apply.

     If this Note is placed in the hands of an attorney for collection, or is 
collected in whole or in part by suit or through probate, bankruptcy or other 
legal proceedings of any kind, Borrower agrees to pay, in addition to all 
other sums payable hereunder, all costs and expenses of collection, including 
but not limited to reasonable attorneys' fees.

     Borrower and any and all endorsers and guarantors of this Note severally 
waive presentment for payment, notice of nonpayment, protest, demand, notice 
of protest, notice of intent to accelerate, notice of acceleration and 
dishonor, diligence in enforcement and indulgences of every kind and without 
further notice hereby agree to renewals, extensions, exchanges or releases of 
collateral, taking of additional collateral, indulgences or partial payments, 
either before or after maturity.

     THIS NOTE HAS BEEN EXECUTED UNDER, AND SHALL BE CONSTRUED AND ENFORCED 
IN ACCORDANCE WITH, THE LAWS OF THE STATE OF TEXAS, EXCEPT AS SUCH LAWS ARE 
PREEMPTED BY APPLICABLE FEDERAL LAWS.

     This Note is given in renewal and extension of, but not in 
extinguishment of, that certain Fifth Renewal and Extension Promissory Note 
in the original principal amount of $1,550,000.00, dated as of July 31, 1997, 
from Borrower to Bank (the "PRIOR NOTE"). The execution of this Note is not 
intended to and shall not cause or result in a novation with regard to the 
indebtedness evidenced by the Prior Note.

                                     BORROWER:

                                     CAPROCK COMMUNICATIONS CORP.




                                     By:
                                        --------------------------------------
                                     Name:
                                          ------------------------------------
                                     Title:
                                           -----------------------------------



SIXTH RENEWAL AND EXTENSION PROMISSORY NOTE - PAGE 4


<PAGE>
                  SIXTH RENEWAL AND EXTENSION PROMISSORY NOTE

$2,500,000.00                                                  December 31, 1997

     FOR VALUE RECEIVED, on or before December 31, 1998 ("MATURITY DATE"), 
the undersigned and if more than one, each of them, jointly and severally 
(hereinafter referred to as "BORROWER"), promises to pay to the order of BANK 
ONE, TEXAS, NATIONAL ASSOCIATION ("BANK") at its offices in Dallas County, 
Texas, at 1717 Main Street, 3rd Floor, Dallas, Texas 75201, the principal 
amount of TWO MILLION FIVE HUNDRED THOUSAND AND NO/100 DOLLARS ($2,500,000.00) 
("TOTAL PRINCIPAL AMOUNT"), or such amount less than the Total Principal 
Amount which is outstanding from time to time if the total amount outstanding 
under this Promissory Note (this "NOTE") is less than the Total Principal 
Amount, together with interest on such portion of the Total Principal Amount 
which has been advanced to Borrower from the date advanced until paid at a 
fluctuating rate per annum which shall from day to day be equal to the lesser 
of (a) the Maximum Rate (as hereinafter defined), or (b) a rate ("CONTRACT 
RATE"), calculated on the basis of the actual days elapsed but computed as if 
each year consisted of 360 days, equal to the sum of (A) the Base Rate of 
interest ("BASE RATE") as established from time to time by Bank (which may 
not be the lowest, best or most favorable rate of interest which Bank may 
charge on loans to its customers) plus (B) two percent (2.00%), each change 
in the rate to be charged on this Note to become effective without notice to 
Borrower on the effective date of each change in the Maximum Rate or the Base 
Rate, as the case may be; provided, however, that (i) the Contract Rate shall 
be subject to reduction as provided in the Loan Agreement (as hereinafter 
defined) and (ii) if at any time the Contract Rate shall exceed the Maximum 
Rate, thereby causing the interest on this Note to be limited to the Maximum 
Rate, then any subsequent reduction in the Base Rate shall not reduce the 
rate of interest on this Note below the Maximum Rate until the total amount 
of interest accrued on this Note equals the amount of interest which would 
have accrued on this Note if the Contract Rate had at all times been in effect.

     The term "MAXIMUM RATE," as used herein, shall mean at the particular 
time in question the maximum rate of interest which, under applicable law, 
may then be charged on this Note. If such maximum rate of interest changes 
after the date hereof and this Note provides for a fluctuating rate of 
interest, the Maximum Rate shall be automatically increased or decreased, as 
the case may be, without notice to Borrower from time to time as of the 
effective date of each change in such maximum rate. If applicable law ceases 
to provide for such a maximum rate of interest, the Maximum Rate shall be 
equal to eighteen percent (18%) per annum. All capitalized terms used herein 
that are not defined herein shall have the meaning given them in that certain 
Loan and Security Agreement, dated as of March 14, 1996, by and between 
Borrower and Bank (as the same has been and may be amended, restated, 
renewed, extended, or otherwise modified, the "LOAN AGREEMENT").

     The principal of and all accrued but unpaid interest on this Note shall 
be due and payable as follows:

     (a) interest shall be due and payable monthly as it accrues, commencing 
on the first day of January, 1998, and continuing on the first day of each 
successive month thereafter during the term of this Note; and

SIXTH RENEWAL AND EXTENSION PROMISSORY NOTE - PAGE 1

<PAGE>

     (b)  the outstanding principal balance of this Note, together with all 
accrued but unpaid interest, shall be due and payable on the Maturity Date.

     All mandatory prepayments of principal and accrued but unpaid interest 
thereon required to be made under the Loan Agreement shall be due and payable 
immediately unless otherwise provided in the Loan Agreement.

     To the extent that any interest is not paid on or before the day it 
becomes due and payable, Bank may, at its option, add such accrued interest 
to the principal of this Note. Notwithstanding anything herein to the 
contrary, upon an Event of Default (as hereinafter defined) or at maturity, 
whether by acceleration or otherwise, all principal of this Note shall, at 
the option of Bank, bear interest at the Default Rate until paid.

     This Note evidences obligations and indebtedness from time to time owing 
by Borrower to Bank pursuant to the Loan Agreement, and is secured by, INTER 
ALIA, the Collateral. The holder of this Note is entitled to the benefits and 
security provided in the Loan Documents.

     Under the Loan Agreement, Borrower may request advances and make 
payments hereunder from time to time, provided that it is understood and 
agreed that the aggregate principal amount outstanding from time to time 
hereunder shall not at any time exceed the Total Principal Amount. The unpaid 
balance of this Note shall increase and decrease with each new advance or 
payment hereunder, as the case may be. This Note shall not be deemed 
terminated or canceled prior to the Maturity Date, although the entire 
principal balance hereof may from time to time be paid in full. Borrower may 
borrow, repay and reborrow hereunder in accordance with the provisions of the 
Loan Agreement. All regularly scheduled payments of the indebtedness 
evidenced by this Note and by any of the other Loan Documents shall be 
applied first to any accrued but unpaid interest then due and payable 
hereunder or thereunder and then to the principal amount then due and 
payable. All non-regularly scheduled payments shall be applied to such 
indebtedness in such order and manner as the holder of this Note may from 
time to time determine in its sole discretion. All payments and prepayments 
of principal of or interest on this Note shall be made in lawful money of the 
United States of America in immediately available funds, at the address of 
Bank indicated above, or such other place as the holder of this Note shall 
designate in writing to Borrower. If any payment of principal of or interest 
on this Note shall become due on a day which is not a Business Day, such 
payment shall be made on the next succeeding Business Day and any such 
extension of time shall be included in computing interest in connection with 
such payment. The books and records of Bank shall be PRIMA FACIE evidence of 
all outstanding principal of and accrued and unpaid interest on this Note.

     Borrower agrees that no advances under this Note shall be used for 
personal, family or household purposes, and that all advances hereunder shall 
be used solely for business, commercial, investment or other similar purposes.

     Borrower agrees that upon the occurrence of any one or more Events of 
Default (as defined in the Loan Agreement), the holder of this Note may, at 
its option, without further notice or demand, (i) declare the outstanding 
principal balance of and accrued but unpaid interest on this Note at once due 
and payable, (ii) refuse to advance any additional amounts under this Note, 
(iii) foreclose all liens and security interests securing payment hereof; 
(iv) pursue any and all 

SIXTH RENEWAL AND EXTENSION PROMISSORY NOTE - PAGE 2
<PAGE>

other rights, remedies and recourses available to the holder hereof; 
including but not limited to any such rights, remedies or recourses under the 
Loan Documents, at law or in equity, or (v) pursue any combination of the 
foregoing.

     The failure to exercise the option to accelerate the maturity of this 
Note or any other right, remedy or recourse available to the holder hereof 
upon the occurrence of an Event of Default, shall not constitute a waiver of 
the right of the holder of this Note to exercise the same at that time or at 
any subsequent time with respect to such Event of Default or any other Event 
of Default. The rights, remedies and recourses of the holder hereof; as 
provided in this Note and any of the other Loan Documents, shall be 
cumulative and concurrent and may be pursued Separately, successively or 
together as often as occasion therefore shall arise, at the sole discretion 
of the holder hereof. The acceptance by the holder hereof of any payment 
under this Note which is less than the payment in full of all amounts due and 
payable at the time of such payment shall not (i) constitute a waiver of or 
impair, reduce, release or extinguish any right, remedy or recourse of the 
holder hereof; or nullify any prior exercise of any such right, remedy or 
recourse, or (ii) impair, reduce, release or extinguish the obligations of 
any party liable under any of the Loan Documents as originally provided 
herein or therein.

     This Note and all of the other Loan Documents are intended to be 
performed in accordance with, and only to the extent permitted by, all 
applicable usury laws. If any provision hereof or of any of the other Loan 
Documents or the application thereof to any person or circumstance shall, for 
any reason and to any extent, be invalid or unenforceable, neither the 
application of such provision to any other person or circumstance nor the 
remainder of the instrument in which such provision is contained shall be 
affected thereby and shall be enforced to the greatest extent permitted by 
law. It is expressly stipulated and agreed to be the intent of the holder 
hereof to at all times comply with the usury and other applicable laws now or 
hereafter governing the interest payable on the indebtedness evidenced by 
this Note. If the applicable law is ever revised, repealed or judicially 
interpreted so as to render usurious any amount called for under this Note or 
under any of the other Loan Documents, or contracted for, charged, taken, 
reserved or received with respect to the indebtedness evidenced by this Note, 
or if Bank's exercise of the option to accelerate the maturity of this Note, 
or if any prepayment by Borrower results in Borrower's having paid any 
interest in excess of that Permitted by law, then it is the express intent of 
Borrower and Bank that all excess amounts theretofore collected by Bank be 
credited on the principal balance of this Note (or, if this Note and all 
other indebtedness arising under or pursuant to the other Loan Documents have 
been paid in full, refunded to Borrower), and the provisions of this Note and 
the other Loan Documents immediately be deemed reformed and the amounts 
thereafter collectable hereunder and thereunder reduced, without the 
necessity of the execution of any new document, so as to comply with the then 
applicable law, but so as to permit the recovery of the fullest amount 
otherwise called for hereunder or thereunder. All sums paid, or agreed to be 
paid, by Borrower for the use, forbearance, detention, taking, charging, 
receiving or reserving of the indebtedness of Borrower to Bank under this 
Note or arising under or pursuant to the other Loan Documents shall, to the 
maximum extent permitted by applicable law, be amortized, prorated, allocated 
and spread throughout the full term of such indebtedness until payment in 
full so that the rate or amount of interest on account of such indebtedness 
does not exceed the usury ceiling from time to time in effect and applicable 
to such indebtedness for so long as such indebtedness is outstanding. To the 
extent federal law permits Bank to contract for, charge or receive a greater 
amount of interest, Bank, will rely on federal law instead of the 

SIXTH RENEWAL AND EXTENSION PROMISSORY NOTE - PAGE 3
<PAGE>

Texas Finance Code, as supplemented by Texas Credit Title for the purpose of 
determining the Maximum Rate. Additionally, to the maximum extent permitted 
by applicable law now or hereafter in effect, Bank may, at its option and 
from time to time, implement any other method of computing the Maximum Rate 
under the Texas Finance Code, as supplemented by Texas Credit Title, or under 
other applicable law by giving notice, if required, to Borrower as provided 
by applicable law now or hereafter in effect. Notwithstanding anything to the 
contrary contained herein or in any of the other Loan Documents, it is not 
the intention of Bank to accelerate the maturity of any interest that has not 
accrued at the time of such acceleration or to collect unearned interest at 
the time of such acceleration.

     In no event shall Chapter 346 of the Texas Finance Code (which regulates 
certain revolving loan accounts and revolving tri-party accounts) apply to 
this Note. To the extent that Chapter 303 of the Texas Finance Code is 
applicable to this Note, the "weekly ceiling" specified in Chapter 303 is the 
applicable ceiling; provided that, if any applicable law permits greater 
interest, the law permitting the greatest interest shall apply.

     If this Note is placed in the hands of an attorney for collection, or is 
collected in whole or in part by suit or through probate, bankruptcy or other 
legal proceedings of any kind, Borrower agrees to pay, in addition to all 
other sums payable hereunder, all costs and expenses of collection, including 
but not limited to reasonable attorneys' fees.

     Borrower and any and all endorsers and guarantors of this Note severally 
waive presentment for payment, notice of nonpayment, protest, demand, notice 
of protest, notice of intent to accelerate, notice of acceleration and 
dishonor, diligence in enforcement and indulgences of every kind and without 
further notice hereby agree to renewals, extensions, exchanges or releases of 
collateral, taking of additional collateral, indulgences or partial payments, 
either before or after maturity.

     THIS NOTE HAS BEEN EXECUTED UNDER, AND SHALL BE CONSTRUED AND ENFORCED 
IN ACCORDANCE WITH, THE LAWS OF THE STATE OF TEXAS, EXCEPT AS SUCH LAWS ARE 
PREEMPTED BY APPLICABLE FEDERAL LAWS.

     This Note is given in renewal and extension of, but not in 
extinguishment of, that certain Fifth Renewal and Extension Promissory Note 
in the original principal amount of $1,550,000.00, dated as of July 31, 1997, 
from Borrower to Bank (the "PRIOR NOTE"). The execution of this Note is not 
intended to and shall not cause or result in a novation with regard to the 
indebtedness evidenced by the Prior Note.

                                     BORROWER:

                                     CAPROCK COMMUNICATIONS CORP.



                                     By: /s/ JERE W. THOMPSON, JR.
                                        -----------------------------------
                                     Name: Jere W. Thompson, Jr.
                                          ---------------------------------
                                     Title: President
                                           --------------------------------


SIXTH RENEWAL AND EXTENSION PROMISSORY NOTE - PAGE 4


<PAGE>

                               PROMISSORY NOTE

$50,000.00                                                       April 1, 1994


    FOR VALUE RECEIVED, SYNERGY TELEMANAGEMENT, INC., a Texas corporation 
(hereinafter "Maker"), promises to pay to the order of TIMOTHY M. TERRELL 
(hereinafter "Payee"), in lawful money of the United States of America, the 
principal amount of Fifty Thousand and No/100 Dollars ($50,000.00), pursuant 
to the terms hereunder, until this Note shall be paid in full.

     This Note shall be due and payable as follows:

          (a)  The principal of this Note shall be due and payable in three (3)
     equal installments of $16,666.67, to be paid on the fourth, fifth and 
     sixth anniversary date of this Note;

          (b)  Maker will pay Payee at Payee's place of business, 17103 
     Preston Road, Suite 190, Dallas, Texas 75248, or at such other place as 
     Payee may designate in writing.  Unless otherwise agreed or required by 
     applicable law, payments will be applied first to principal, and any 
     remaining amount to any unpaid collection costs and late charges.

          (c)  Interest on past-due principal and, to the extent permitted by 
     law, on past-due interest, shall accrue at the lesser of (1) twelve 
     percent (12%) or (2) the maximum rate permitted by law (as defined 
     hereinafter), and shall be payable from time to time on demand.

     Maker may prepay this Note in part or in full without penalty at any 
time, whether by cash, a new loan, renewal, or otherwise.  Prepayment in full 
shall consist of payment of the remaining unpaid principal balance together 
with all accrued and unpaid interest and all other amounts, costs and 
expenses for which Maker is responsible under this Note or any other 
agreement with Payee pertaining to this loan, and in no event will Maker ever 
be required to pay any unearned interest.  Early payments will not, unless 
agreed in writing, relieve Maker of Maker's obligation to continue to make 
payments under the payment schedule.

     Maker will be in default if any of the following happens:

          (a)  Maker fails to make any payment when due;

          (b)  Maker fails to perform at the time and in the manner provided 
     in this Note or in that certain Pledge and Security Agreement, executed 
     this date by and between


PROMISSORY NOTE                                                         Page 1


<PAGE>


     Maker and Payee, and the continuation of such failure for five (5) days 
     after written notice thereof to Maker by Payee; or

          (c)  Maker becomes insolvent, a receiver is appointed for any part 
     of Maker's property, Maker makes an assignment for the benefit of 
     creditors, or any proceeding is commenced either by Maker or against 
     Maker under any bankruptcy or insolvency laws.

     It is understood and agreed that the foregoing events of default are 
cumulative of, and in addition to, any events of default as may be contained 
in any other documents modifying, renewing, extending, increasing, 
evidencing, securing or pertaining to this Note or the debt evidenced thereby.

     Upon default, Payee may declare the entire indebtedness, including the 
unpaid principal balance of this Note, all accrued unpaid interest, and all 
other amounts, costs and expenses for which Maker is responsible under this 
Note or any other agreement with Payee pertaining to this loan, immediately 
due, without notice.  The failure of Payee to so declare the Note immediately 
due and payable upon the occurrence of one of the events of default set forth 
herein shall not constitute a waiver by Payee of the right to declare the 
Note due at any subsequent time in respect of the same default or any other 
default.  Payee may hire an attorney to help collect this Note if Maker does 
not pay, and Maker will pay Payee's reasonable attorneys' fees.  Maker also 
will pay Payee all other amounts actually incurred by Payee as court costs, 
lawful fees for filing, recording, or releasing to any public office any 
instrument securing this loan, if any.

     The performance of this Note is secured by that certain Pledge and 
Security Agreement executed on this date by and between Maker and Payee.

     THIS NOTE HAS BEEN DELIVERED TO PAYEE AND ACCEPTED BY PAYEE IN THE STATE 
OF TEXAS.  IF THERE IS A LAWSUIT, MAKER AGREES TO SUBMIT TO THE JURISDICTION 
OF THE COURTS OF DALLAS COUNTY, THE STATE OF TEXAS.  THIS NOTE SHALL BE 
GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS 
AND APPLICABLE FEDERAL LAWS.

     Under no circumstances (and notwithstanding any other provisions of this 
Note) shall the interest charged, collected, or contracted for on this Note 
exceed the maximum rate permitted by law.  The term "maximum rate permitted 
by Law" as used in this Note means the greater of (a) the maximum rate of 
interest permitted under federal or other law applicable to the indebtedness 
evidenced by this Note, or (b) the higher, as of the date of this Note, of 
the "Indicated Rate Ceiling" or the "Quarterly Ceiling" as referred to in 
Article 5069-1.04(a)(1) and Article 5069-1.04(a)(2) respectively, V.T.C.S.  
If any part of this Note cannot be enforced, this fact will not affect the 
rest of the Note.  In particular, this paragraph means (among other things) 
that Maker


PROMISSORY NOTE                                                         Page 2

<PAGE>


does not agree or intend to pay, and Payee does not agree or intend to 
contract for, charge, collect, take, reserve or receive (collectively 
referred to herein as "charge or collect"), any amount in the nature of 
interest or in the nature of a fee for this loan, which would in any way or 
event (including demand, prepayment, or acceleration) cause Payee to charge 
or collect more for this loan than the maximum Payee would be permitted to 
charge or collect by federal law or the law of the State of Texas (as 
applicable).  Any such excess interest or unauthorized fee shall, instead of 
any thing stated to the contrary, be applied first to reduce the principal 
balance of this loan, and when the principal has been paid in full, be 
refunded to Maker.  The right to accelerate maturity of sums due under this 
Note does not include the right to accelerate any interest which has not 
otherwise accrued on the date of such acceleration, and Payee does not intend 
to charge or collect any unearned interest in the event of acceleration.  All 
sums paid or agreed to be paid to Payee for the use, forbearance or detention 
of sums due hereunder shall, to the extent permitted by applicable law, be 
amortized, prorated, allocated and spread throughout the full term of the 
loan evidenced by this Note until payment in full so that the rate or amount 
of interest on account of the loan evidenced hereby does not exceed the 
applicable usury ceiling.  Payee may delay or forgo enforcing any of its 
rights or remedies under this Note without losing them.  Maker and any other 
person who signs, guarantees or endorses this Note, to the extent allowed by 
law, waive presentment, demand for payment, protest, notice of dishonor, 
notice of intent to accelerate the maturity of this Note, and notice of 
acceleration of the maturity of this Note.  Upon any change in the terms of 
this Note, and unless otherwise expressly stated in writing, no party who 
signs this Note, whether as maker, guarantor, accommodation maker or 
endorser, shall be released from liability.  All such parties agree that 
Payee may renew, extend (repeatedly and for any length of time) or modify 
this loan, or release any party or guarantor or collateral; or impair, fail 
to realize upon or perfect Payee's security interest in the collateral, if 
any, without the consent of or notice to anyone.

                                       Maker:

                                       SYNERGY TELEMANAGEMENT, INC.

                                       By:  /s/ Timothy W. Rogers
                                          ---------------------------------

                                       Its:  President
                                           --------------------------------


















PROMISSORY NOTE                                                         Page 3


<PAGE>

                                 PROMISSORY NOTE

$50,000.00                                                        April 1, 1994

     FOR VALUE RECEIVED, SYNERGY TELEMANAGEMENT, INC., a Texas corporation
(hereinafter "Maker"), promises to pay to the order of TIMOTHY W. ROGERS
(hereinafter "Payee"), in lawful money of the United States of America, the
principal amount of Fifty Thousand and No/100 Dollars ($50,000.00), pursuant
to the terms hereunder, until this Note shall be paid in full.

     This Note shall be due and payable as follows:

          (a)  The principal of this Note shall be due and payable in three
     (3) equal installments of $16,666.67, to be paid on the fourth, fifth
     and sixth anniversary date of this Note;

          (b)  Maker will pay Payee at Payee's place of business, 17103
     Preston Road, Suite 190, Dallas, Texas 75248, or at such other place as
     Payee may designate in writing. Unless otherwise agreed or required by
     applicable law, payments will be applied first to principal, and any
     remaining amount to any unpaid collection costs and late charges.

          (c)  Interest on past-due principal and, to the extent permitted by
     law, on past-due interest, shall accrue at the lesser of (1) twelve
     percent (12%) or (2) the maximum rate permitted by law (as defined
     hereinafter), and shall be payable from time to time on demand.

     Maker may prepay this Note in part or in full without penalty at any
time, whether by cash, a new loan, renewal, or otherwise. Prepayment in full
shall consist of payment of the remaining unpaid principal balance together
with all accrued and unpaid interest and all other amounts, costs and
expenses for which Maker is responsible under this Note or any other agreement
with Payee pertaining to this loan, and in no event will Maker ever be
required to pay an unearned interest. Early payments will not, unless agreed
in writing, relieve Maker of Maker's obligation to continue to make payments
under the payment schedule.

     Maker will be in default if any of the following happens:

          (a)  Maker fails to make any payment when due;

          (b)  Maker fails to perform at the time and in the manner provided
     in this Note or in that certain Pledge and Security Agreement, executed
     this date by and between

PROMISSORY NOTE                                                          Page 1
<PAGE>

     Maker and Payee, and the continuation of such failure for five (5) days
     after written notice thereof to Maker by Payee; or

          (c)  Maker becomes insolvent, a receiver is appointed for any part
     of Maker's property, Maker makes an assignment for the benefit of
     creditors, or any proceeding is commenced either by Maker or against
     Maker under any bankruptcy or insolvency laws.

     It is understood and agreed that the foregoing events of default are
cumulative of, and in addition to, any events of default as may be contained
in any other documents modifying, renewing, extending, increasing,
evidencing, securing or pertaining to this Note or the debt evidenced thereby.

     Upon default, Payee may declare the entire indebtedness, including the
unpaid principal balance of this Note, all accrued unpaid interest, and all
other amounts, costs and expenses for which Maker is responsible under this
Note or any other agreement with Payee pertaining to this loan, immediately
due, without notice. The failure of Payee to so declare the Note immediately
due and payable upon the occurrence of one of the events of default set forth
herein shall not constitute a waiver by Payee of the right to declare the
Note due at any subsequent time in respect of the same default or any other
default. Payee may hire an attorney to help collect this Note if Maker does
not pay, and Maker will pay Payee's reasonable attorneys' fees. Maker also
will pay Payee all other amounts actually incurred by Payee as court costs,
lawful fees for filing and recording, or releasing to any public office any
instrument securing this loan, if any.

     The performance of this Note is secured by that certain Pledge and
Security Agreement executed on this date by and between Maker and Payee.

     THIS NOTE HAS BEEN DELIVERED TO PAYEE AND ACCEPTED BY PAYEE IN THE STATE
OF TEXAS. IF THERE IS A LAWSUIT, MAKER AGREES TO SUBMIT TO THE JURISDICTION OF
THE COURTS OF DALLAS COUNTY, THE STATE OF TEXAS. THIS NOTE SHALL BE GOVERNED
BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS AND
APPLICABLE FEDERAL LAWS.

     Under no circumstances (and notwithstanding any other provisions of this
Note) shall the interest charged, collected, or contracted for on this Note
exceed the maximum rate permitted by law. The term "maximum rate permitted by
Law" as used in this Note means the greater of (a) the maximum rate of
interest permitted under federal or other law applicable to the indebtedness
evidenced by this Note, or (b) the higher, as of the date of this Note, of
the "Indicated Rate Ceiling" or the "Quarterly Ceiling" as referred to in
Article 5069-1.04(a)(1) and Article 5069-1.04(a)(2) respectively, V.T.C.S. If
any part of this Note cannot be enforced, this fact will not affect the rest
of the Note. In particular, this paragraph means (among other things) that
Maker

PROMISSORY NOTE                                                           Page 2
<PAGE>

does not agree or intend to pay, and Payee does not agree or intend to
contract for, charge, collect, take, reserve or receive (collectively
referred to herein as "charge or collect"), any amount in the nature of
interest or in the nature of a fee for this loan, which would in any way or
event (including demand, prepayment, or acceleration) cause Payee to charge
or collect more for this loan than the maximum Payee would be permitted to
charge or collect by federal law or the law of the State of Texas (as
applicable). Any such excess interest or unauthorized fee shall, instead of
any thing stated to the contrary, be applied first to reduce the principal
balance of this loan, and when the principal has been paid in full, be
refunded to Maker. The right to accelerate maturity of sums due under this
Note does not include the right to accelerate any interest which has not
otherwise accrued on the date of such acceleration, and Payee does not intend
to charge or collect any unearned interest in the event of acceleration. All
sums paid or agreed to be paid to Payee for the use, forbearance or detention
of sums due hereunder shall, to the extent permitted by applicable law, be
amortized, prorated, allocated and spread throughout the full term of the loan
evidenced by this Note until payment in full so that the rate or amount of
interest on account of the loan evidenced hereby does not exceed the
applicable usury ceiling. Payee may delay or forgo enforcing any of its rights
or remedies under this Note without losing them. Maker and any other person
who signs, guarantees or endorses this Note, to the extent allowed by law,
waive presentment, demand for payment, protest, notice of dishonor, notice of
intent to accelerate the maturity of this Note, and notice of acceleration of
the maturity of this Note. Upon any change in the terms of this Note, and
unless otherwise expressly stated in writing, no party who signs this Note,
whether as maker, guarantor, accommodation maker or endorser, shall be
released from liability. All such parties agree that Payee may renew, extend
(repeatedly and for any length of time) or modify this loan, or release any
party or guarantor or collateral; or impair, fail to realize upon or perfect
Payee's security interest in the collateral, if any, without the consent of or
notice to anyone.

                                       Maker:

                                       SYNERGY TELEMANAGEMENT, INC.


                                       By: /s/ Timothy M. Terrell
                                           -----------------------------------

                                           Its: TREASURER
                                               -------------------------------




PROMISSORY NOTE                                                           Page 3

<PAGE>

                                    PROMISSORY NOTE


$50,000,000                                                       April 1, 1994

     FOR VALUE RECEIVED, SYNERGY TELEMANAGEMENT, INC., a Texas corporation 
(hereinafter "Maker"), promises to pay to the order of SCOTT L. ROBERTS 
(hereinafter "Payee"), in lawful money of the United States of America, the 
principal amount of Fifty Thousand and No/100 Dollars ($50,000,000), pursuant 
to the terms hereunder until this Note be paid in full.

     This Note shall be due and payable as follows:

          (a)  The principal of this Note shall be due and payable in three 
     (3) equal installments of $16,666.76, to be paid on the fourth, fifth and 
     sixth anniversary date of this Note;

          (b)  Maker will pay Payee at Payee's place of business, 17103 
     Preston Road, Suite 190, Dallas, Texas 75248, or at such other place as 
     Payee may designate in writing.  Unless otherwise agreed or required by 
     applicable law, payments will be applied first to principal, and any 
     remaining amount to any unpaid collection costs and late charges.

          (c)  Interest on past-due principal and, to the extent permitted by 
     law, on past-due interest, shall accrue at the lesser of (1) twelve percent
     (12%) or (2) the maximum rate permitted by law (as defined hereinafter), 
     and shall be payable from time to time on demand.

     Maker may repay this Note in part or in full without penalty at any 
time, whether by cash, a new loan, renewal, or otherwise.  Prepayment in full 
shall consist of payment of the remaining unpaid principal balance together 
with all accrued and unpaid interest and all other amounts, costs and 
expenses for which Maker is responsible under this Note or any other 
agreement with Payee pertaining to this loan, and in no event will Maker ever 
be required to pay any unearned interest.  Early payments will not, unless 
agreed in writing, relieve Maker of Maker's obligation to continue to make 
payments under the payment schedule.

     Maker will be default if any of the following happens;

          (a)  Maker fails to make any payments when due;

          (b)  Maker fails to perform at the time and in the manner provided 
     in this Note or in that certain Pledge and Security Agreement, executed 
     this date by and between


PROMISSORY NOTE                                                          Page 1

<PAGE>

     Maker and Payee, and the continuation of such failure for five (5) days 
    after written notice thereof to Maker by Payee; or

          (c)  Maker becomes insolvent, a receiver is appointed for any part 
     of Maker's property, Maker makes an assignment for the benefit of 
     creditors, or any proceeding is commenced either by Maker or against 
     Maker under bankruptcy or insolvency laws.

     It is understood and agreed that the foregoing events of default are 
cumulative of, and in addition to, any events of defaults as may be contained 
in any other documents modifying, renewing, extending, increasing, evidencing,
securing or pertaining to this Note or the debt evidenced thereby.

     Upon default, Payee may declare the entire indebtedness, including the 
unpaid principal balance of this Note, all accrued unpaid interest, and all 
other amounts, costs and expenses for which Maker is responsible under this 
Note or any other agreement with Payee pertaining to this loan, immediately 
due, without notice.  The failure of Payee to so declare the Note immediately 
due and payable upon the occurrence of one of the events of default set forth 
herein shall not constitute a waiver by Payee of the right to declare the 
Note due at any subsequent time in respect of the same default or any other 
default.  Payee may hire an attorney to help collect this Note if Maker does 
not pay, and Maker will pay Payee's reasonable attorneys' fees.  Maker also 
will pay Payee all other amounts actually incurred by Payee as court costs, 
lawful fees for filing, recording, or releasing to any public office any 
instrument securing this loan, if any.

     The performance of this Note is secured by that certain Pledge and 
Security Agreement executed on this date by and between Maker and Payee.

     THIS NOTE HAS BEEN DELIVERED TO PAYEE AND ACCEPTED BY PAYEE IN THE STATE 
OF TEXAS.  IF THERE IS A LAWSUIT, MAKER AGREES TO SUBMIT TO THE JURISDICTION 
OF THE COURTS OF DALLAS COUNTY, THE STATE OF TEXAS.  THIS NOTE SHALL BE 
GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS 
AND APPLICABLE FEDERAL LAWS.

     Under no circumstances (and notwithstanding any other provisions of this 
Note) shall the interest charged, collected, or contracted for on this Note 
exceed the maximum rate permitted by law.  The term "maximum rate permitted 
by Law" as used in this Note means the greater of (a) the maximum rate of 
interest permitted under federal or other law applicable to the indebtedness 
evidenced by this Note, or (b) the higher, as of the date of this Note, of 
the "Indicated Rate Ceiling" or the "Quarterly Ceiling" as referred to in 
Article 5069-1.04(a)(1) and Article 5069-1.04(a)(2) respectively, V.T.C.S.  
If any part of this Note cannot be enforced, this fact will not affect the 
rest of the Note.  In particular, this paragraph means (among other things) 
that Maker

PROMISSORY NOTE                                                          Page 2

<PAGE>

does not agree or intend to pay, and Payee does not agree or intend to 
contract for, charge, collect, take, reserve or receive (collectively 
referred to herein as "charge or collect"), any amount in the nature of 
interest or in the nature of a fee for this loan, which would in any way or 
event (including demand, prepayment, or acceleration) cause Payee to charge 
or collect more for this loan than the maximum Payee would be permitted to 
charge or collect by federal law or the law of the State of Texas (as 
applicable).  Any such excess interest or unauthorized fee shall, instead of 
any thing stated to the contrary, be applied first to reduce the principal 
balance of this loan, and when the principal has been paid in full, be 
refunded to Maker.  The right to accelerate maturity of sums due under this 
Note does not include the right to accelerate any interest which has not 
otherwise accrued on the date of such acceleration, and Payee does not intend 
to charge or collect any unearned interest in the event of acceleration.  All 
sums paid or agreed to be paid to Payee for the use, forbearance or detention 
of sums due hereunder shall, to the extent permitted by applicable law, be 
amortized, prorated, allocated and spread throughout the full term of the 
loan evidenced by this Note until payment in full so that the rate or amount 
of interest on account of the loan evidenced hereby does not exceed the 
applicable usury ceiling.  Payee may delay or forgo enforcing any of its 
rights or remedies under this Note without losing them.  Maker and any other 
person who signs, guarantees or endorses this Note, to the extent allowed by 
law, waive presentment, demand for payment, protest, notice of dishonor, 
notice of intent to accelerate the maturity of this Note, and notice of 
acceleration of the maturity of this Note.  Upon any change in the terms of 
this Note, and unless otherwise expressly stated in writing, no party who 
signs this Note, whether as maker, guarantor, accommodation maker or endorser, 
shall be released from liability.  All such parties agree that Payee may 
renew, extend (repeatedly and for any length of time) or modify this loan, or 
release any party or guarantor of time) or modify this loan, or release any 
party or guarantor or collateral; or impair, fail to realize upon or perfect 
Payee's security interest in the collateral, if any, without the consent of 
or notice to anyone.


                                       Maker:


                                       SYNERGY TELEMANAGEMENT, INC.

                                       By: /s/ TIMOTHY M. TERRELL
                                          -----------------------------------
                                       Its: President
                                            ---------------------------------





PROMISSORY NOTE                                                          Page 3

<PAGE>

                             CAPROCK
 
                          COMMUNICATIONS

                      COMMERCIAL APPLICATION





                              [FORM]
<PAGE>

                    TERMS OF SERVICE AGREEMENT

The customer identified on the front page of this Application for Service 
(the "Customer") and Caprock Communications Corp (Caprock) hereby agree as 
follows:

1. This Application for Service ("Application") is subject to the approval of 
   Caprock. Accordingly, Caprock can refuse to provide the services applied 
   for by Customer for any reason whatsoever. Caprock shall have no liability 
   whatsoever for any damages, costs or expenses (consequential or otherwise) 
   arising from or related to Caprock's failure or refusal to approve this 
   Application and to provide the telecommunication services applied for 
   hereunder.

2. Customer authorizes Caprock to obtain credit and financial information 
   about the Customer as Caprock deems appropriate and necessary in order to 
   evaluate the credit worthiness of the Customer and otherwise process this 
   Application.

3. Customer hereby warrants to Caprock that it has all requisite legal 
   authority to execute this Application and to be bound by and perform all 
   of the terms and conditions hereof.

4. For all services provided by Caprock hereunder, Customer agrees to pay 
   Caprock at the rates for service established by Caprock. All rates for 
   services provided hereunder are subject to change.  Billings for services 
   are rendered monthly and are due and payable fifteen (15) days from 
   invoice date. All balances for billings not received by the due date 
   (described in the immediately preceding sentence) shall be subject to a 
   finance charge levied at the rate of one and one-half percent (1 1/2%) per 
   month or the maximum lawful rate under the laws of the State of Texas, 
   whichever is less. All returned checks will be assessed a $25.00 returned 
   check fee. In the event Caprock must take steps to collect any balance 
   owed by Customer for services rendered pursuant hereto, Customer hereby 
   agrees to pay Caprock all costs of collection, including the actual 
   attorney's fees incurred by Caprock. Additionally, Caprock reserves the 
   right to bill all charges through Southwestern Bell, U.S. West, or other 
   billing agent without prior consent or authorization of the Customer.

5. Upon approval of this Application by Caprock, Caprock shall use its best 
   efforts to provide Customer with the services applied for herein. 
   Notwithstanding anything else contained herein to the contrary, Caprock 
   shall have no liability whatsoever for any lost business or profits or any 
   direct, indirect, special or consequential damages or loss resulting from 
   Caprock failure or inability to provide the services required hereunder at 
   any time and Customer shall indemnify and hold harmless Caprock, its 
   shareholders, directors, officers, employees, agents and representatives, 
   from and against any and all claims, actions, suits, proceedings, costs, 
   expenses, damages and liabilities, including attorney's fees, arising out 
   of, connected with, or resulting from Caprock failure or inability to 
   provide the services required hereunder at any time including such failure 
   or inability as may be attributable to Caprock's own negligence.

6. Customer acknowledges that Caprock has no liability whatsoever for issuing 
   "800" numbers. Accordingly, no 800 number should  be construed as operational
   by Customer until it is an established working number. Customer is 
   responsible for all charges associated with said 800 number.

7. Caprock assumes no liability for the cancellation of Telecommunication 
   services contracted or otherwise, with other vendors.

8. Upon any breach of the terms of this Application by Customer, including 
   without limitation breaches resulting from the failure to timely pay all 
   service charges in accordance herewith. Caprock shall be entitled to 
   terminate the services provided hereunder and to seek any and all other 
   remedies available at law or in equity on account of such breach by Customer.
   Customer agrees to subscribe for the term specified within this agreement. 
   If customer cancels service on any activated line, Caprock reserves the 
   right to charge customer 20% of the average monthly bill (previous 3 months) 
   multiplied by the remainder of the months remaining on the contract. 
   Customer agrees to pay Caprock said amount due immediately upon breach of 
   this agreement in one lump sum.

9. This Application shall be construed and enforced in accordance with the 
   laws of the State of Texas. Venue for any action arising out of or related 
   hereto or the services provided hereunder shall be exclusively in Dallas
   County, Texas.

10. This Application may not be assigned by Customer without the express 
    written consent of Caprock in each instance.

11. Caprock assumes no responsibility for damages caused by any delay in 
    activation of Customer's service.

12. Customer is responsible for all Local Exchange Company related charges 
    (Local Loop charges) for the entire term specified under this agreement.


                     Initial _____________________   Date  _________________



<PAGE>

                             CAPROCK
                          COMMUNICATIONS

                        PERFORMANCE MATTERS

                         COMMERCIAL AGENT
                            APPLICATION





                              [FORM]
<PAGE>

                    TERMS OF SERVICE AGREEMENT

The customer identified on the front page of this Application for Service 
(the "Customer") and Caprock Communications Corp (Caprock) hereby agree as 
follows:

1. This Application for Service ("Application") is subject to the approval of 
   Caprock. Accordingly, Caprock can refuse to provide the services applied 
   for by Customer for any reason whatsoever. Caprock shall have no liability 
   whatsoever for any damages, costs or expenses (consequential or otherwise) 
   arising from or related to Caprock's failure or refusal to approve this 
   Application and to provide the telecommunication services applied for 
   hereunder.

2. Customer authorizes Caprock to obtain credit and financial information 
   about the Customer as Caprock deems appropriate and necessary in order to 
   evaluate the credit worthiness of the Customer and otherwise process this 
   Application.

3. Customer hereby warrants to Caprock that it has all requisite legal 
   authority to execute this Application and to be bound by and perform all 
   of the terms and conditions hereof.

4. For all services provided by Caprock hereunder, Customer agrees to pay 
   Caprock at the rates for service established by Caprock. All rates for 
   services provided hereunder are subject to change.  Billings for services 
   are rendered monthly and are due and payable fifteen (15) days from 
   invoice date. All balances for billings not received by the due date 
   (described in the immediately preceding sentence) shall be subject to a 
   finance charge levied at the rate of one and one-half percent (1 1/2%) per 
   month or the maximum lawful rate under the laws of the State of Texas, 
   whichever is less. All returned checks will be assessed a $25.00 returned 
   check fee. In the event Caprock must take steps to collect any balance 
   owed by Customer for services rendered pursuant hereto, Customer hereby 
   agrees to pay Caprock all costs of collection, including the actual 
   attorney's fees incurred by Caprock. Additionally, Caprock reserves the 
   right to bill all charges through Southwestern Bell, U.S. West, or other 
   billing agent without prior consent or authorization of the Customer.

5. Upon approval of this Application by Caprock, Caprock shall use its best 
   efforts to provide Customer with the services applied for herein. 
   Notwithstanding anything else contained herein to the contrary, Caprock 
   shall have no liability whatsoever for any lost business or profits or any 
   direct, indirect, special or consequential damages or loss resulting from 
   Caprock failure or inability to provide the services required hereunder at 
   any time and Customer shall indemnify and hold harmless Caprock, its 
   shareholders, directors, officers, employees, agents and representatives, 
   from and against any and all claims, actions, suits, proceedings, costs, 
   expenses, damages and liabilities, including attorney's fees, arising out 
   of, connected with, or resulting from Caprock failure or inability to 
   provide the services required hereunder at any time including such failure 
   or inability as may be attributable to Caprock's own negligence.

6. Customer acknowledges that Caprock has no liability whatsoever for issuing 
   "800" numbers. Accordingly, no 800 number should  be construed as operational
   by Customer until it is an established working number. Customer is 
   responsible for all charges associated with said 800 number.

7. Caprock assumes no liability for the cancellation of Telecommunication 
   services contracted or otherwise, with other vendors.

8. Upon any breach of the terms of this Application by Customer, including 
   without limitation breaches resulting from the failure to timely pay all 
   service charges in accordance herewith. Caprock shall be entitled to 
   terminate the services provided hereunder and to seek any and all other 
   remedies available at law or in equity on account of such breach by Customer.
   Customer agrees to subscribe for the term specified within this agreement. 
   If customer cancels service on any activated line, Caprock reserves the 
   right to charge customer 20% of the average monthly bill (previous 3 months) 
   multiplied by the remainder of the months remaining on the contract. 
   Customer agrees to pay Caprock said amount due immediately upon breach of 
   this agreement in one lump sum.

9. This Application shall be construed and enforced in accordance with the 
   laws of the State of Texas. Venue for any action arising out of or related 
   hereto or the services provided hereunder shall be exclusively in Dallas
   County, Texas.

10. This Application may not be assigned by Customer without the express 
    written consent of Caprock in each instance.

11. Caprock assumes no responsibility for damages caused by any delay in 
    activation of Customer's service.

12. Customer is responsible for all Local Exchange Company related charges 
    (Local Loop charges) for the entire term specified under this agreement.


                     Initial _____________________   Date  _________________



<PAGE>

                                  UNLIMITED GUARANTY


     THIS UNLIMITED GUARANTY ("Guaranty") is made as of the 9th day of March,
1996, by Guarantor (as hereinafter defined) for the benefit of Bank (as
hereinafter defined).

     1.   DEFINITIONS. As used in this Guaranty, the following terms shall have
the meanings indicated below:

          (a)  The term "BANK" shall mean BANK ONE, TEXAS, NATIONAL ASSOCIATION,
     whose address for notice purposes is the following:

          1717 Main Street, 3rd Floor
          Dallas, Dallas County, Texas 75201
          Attn: Middle Market Banking Division

          (b)  The term "BORROWER" (whether one or more) shall mean the
     following: CapRock Communications Corp., a Texas corporation.

          (c)  The term "GUARANTEED INDEBTEDNESS" shall mean (i) all
     indebtedness, obligations and liabilities of Borrower to Bank of any kind
     or character, now existing or hereafter arising, whether direct, indirect,
     related, unrelated, fixed, contingent, liquidated, unliquidated, joint,
     several or joint and several, and regardless of whether such indebtedness,
     obligations and liabilities may, prior to their acquisitions by Bank, be or
     have been payable to or in favor of a third party and subsequently acquired
     by Bank (it being contemplated that Bank may make such acquisitions from
     third parties), including. without limitation all indebtedness, obligations
     and liabilities of Borrower to Bank now existing or hereafter arising by
     note, draft, acceptance, guaranty, endorsement, letter of credit,
     assignment, purchase, overdraft, discount, indemnity agreement or
     otherwise, (ii) all accrued but unpaid interest on any of the indebtedness
     described in (i) above, (iii) all obligations of Borrower to Bank under any
     documents evidencing, securing, governing and/or pertaining to all or any
     part of the indebtedness described in (i) and (ii) above (collectively, the
     "LOAN DOCUMENTS"), (iv) all costs and expenses incurred by Bank in
     connection with the collection and administration of all or any part of the
     indebtedness and obligations described in (i), (ii) and (iii) above or the
     protection or preservation of, or realization upon, the collateral securing
     all or any part of such indebtedness and obligations, including without
     limitation all reasonable attorneys' fees, and (v) all renewals,
     extensions, modifications and rearrangements of the indebtedness and
     obligations described in (i), (ii), (iii) and (iv) above.


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          (d)  The term "GUARANTOR" shall mean Jere W. Thompson, Jr., whose
     address for notice purposes is the following:

          Two Galleria Tower
          13455 Noel Road
          Suite 1925, LB 46
          Dallas, Texas 75240-6638

     2.   OBLIGATIONS. As an inducement to Bank to extend or continue to extend
credit and other financial accommodations to Borrower, Guarantor, for value
received, does hereby unconditionally and absolutely guarantee the prompt and
full payment and performance of the Guaranteed Indebtedness when due or declared
to be due and at all times thereafter.

     3.   CHARACTER OF OBLIGATIONS. This is an absolute, continuing and
unconditional guaranty of payment and not of collection and if at any time or
from time to time there is no outstanding Guaranteed Indebtedness, the
obligations of Guarantor with respect to any and all Guaranteed Indebtedness
incurred thereafter shall not be affected. All Guaranteed Indebtedness
heretofore, concurrently herewith or hereafter made by Bank to Borrower shall be
conclusively presumed to have been made or acquired in acceptance hereof.
Guarantor shall be liable, jointly and severally, with Borrower and any other
guarantor of all or any part of the Guaranteed Indebtedness.

     4.   RIGHT OF REVOCATION. Guarantor understands and agrees that Guarantor
may revoke its future obligations under this Guaranty at any time by giving Bank
written notice that Guarantor will not be liable hereunder for any indebtedness
or obligations of Borrower incurred on or after the effective date of such
revocation. Such revocation shall be deemed to be effective on the day following
the day Bank receives such notice delivered either by: (a) personal delivery to
the address and designated department of Bank identified in subparagraph 1(a)
above, or (b) United States mail, registered or certified, return receipt
requested, postage prepaid, addressed to Bank at the address shown in
subparagraph 1(a) above. Notwithstanding such revocation, Guarantor shall remain
liable on its obligations hereunder until payment in full to Bank of(x) all of
the Guaranteed Indebtedness that is outstanding on the effective date of such
revocation, and any renewals and extensions thereof, and (y) all loans, advances
and other extensions of credit made to or for the account of Borrower on or
after the effective date of such revocation pursuant to the obligation of Bank
under a commitment or agreement made to or with Borrower prior to the effective
date of such revocation. The terms and conditions of this Guaranty, including
without limitation the consents and waivers set forth in paragraph 7 hereof,
shall remain in effect with respect to the Guaranteed Indebtedness described in
the preceding sentence in the same manner as if such revocation had not been
made by Guarantor.

     5.   REPRESENTATIONS AND WARRANTIES.  Guarantor hereby represents and
warrants the following to Bank:

          (a)  This Guaranty may reasonably be expected to benefit, directly or
     indirectly, Guarantor, and (i) if Guarantor is a corporation, the Board of
     Directors of Guarantor has 


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     determined that this Guaranty may reasonably be expected to benefit, 
     directly or indirectly, Guarantor, or (ii) if Guarantor is a partnership,
     the requisite number of its partners have determined that this Guaranty 
     may reasonably be expected to benefit, directly or indirectly, Guarantor;
     and

          (b)  Guarantor is familiar with, and has independently reviewed the
     books and records regarding, the financial condition of Borrower and is
     familiar with the value of any and all collateral intended to be security
     for the payment of all or any part of the Guaranteed Indebtedness;
     provided, however, Guarantor is not relying on such financial condition or
     collateral as an inducement to enter into this Guaranty; and

          (c)  Guarantor has adequate means to obtain from Borrower on a
     continuing basis information concerning the financial condition of Borrower
     and Guarantor is not relying on Bank to provide such information to
     Guarantor either now or in the future; and

          (d)  Guarantor has the power and authority to execute, deliver and
     perform this Guaranty and any other agreements executed by Guarantor
     contemporaneously herewith, and the execution, delivery and performance of
     this Guaranty and any other agreements executed by Guarantor 
     contemporaneously herewith do not and will not violate (i) any agreement or
     instrument to which Guarantor is a party, (ii) any law, rule, regulation or
     order of any governmental authority to which Guarantor is subject, or (iii)
     its articles or certificate of incorporation or bylaws, if Guarantor is a
     corporation, or its partnership agreement, if Guarantor is a partnership;
     and

          (e)  Neither Bank nor any other party has made any representation,
     warranty or statement to Guarantor in order to induce Guarantor to execute
     this Guaranty; and

          (f)  The financial statements and other financial information
     regarding Guarantor heretofore and hereafter delivered to Bank are and
     shall be true and correct in all material respects and fairly present the
     financial position of Guarantor as of the dates thereof, and no material
     adverse change has occurred in the financial condition of Guarantor
     reflected in the financial statements and other financial information
     regarding Guarantor heretofore delivered to Bank since the date of the last
     statement thereof; and

          (g)  As of the date hereof, and after giving effect to this Guaranty
     and the obligations evidenced hereby, (i) Guarantor is and will be solvent,
     (ii) the fair saleable value of Guarantor's assets exceeds and will
     continue to exceed its liabilities (both fixed and contingent), (iii)
     Guarantor is and will continue to be able to pay its debts as they mature,
     and (iv) if Guarantor is not an individual, Guarantor has and will continue
     to have sufficient capital to carry on its business and all businesses in
     which it is about to engage.

     6.   COVENANTS. Guarantor hereby covenants and agrees with Bank as follows:


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          (a)  Guarantor shall not, so long as its obligations under this
     Guaranty continue, transfer or pledge any material portion of its assets
     for less than full and adequate consideration; and

          (b)  Guarantor shall promptly furnish to Bank at any time and from
     time to time such financial statements and other financial information of
     Guarantor as the Bank may reasonably require, in form and substance
     satisfactory to Bank; and

          (c)  Guarantor shall comply with all terms and provisions of the Loan
     Documents that apply to Guarantor; and

          (d)  Guarantor shall promptly inform Bank of (i) any litigation or
     governmental investigation against Guarantor or affecting any security for
     all or any part of the Guaranteed Indebtedness or this Guaranty which, if
     determined adversely, might have a material adverse effect upon the
     financial condition of Guarantor or upon such security or might cause a
     default under any of the Loan Documents, (ii) any material claim or
     controversy which might become the subject of such litigation or
     governmental investigation, and (iii) any material adverse change in the
     financial condition of Guarantor.

     7.   CONSENT AND WAIVER.

          (a)  Guarantor waives (i) promptness, diligence and notice of
     acceptance of this Guaranty and notice of the incurring of any obligation,
     indebtedness or liability to which this Guaranty applies or may apply and
     waives presentment for payment, notice of nonpayment, protest, demand,
     notice of protest, notice of intent to accelerate, notice of acceleration,
     notice of dishonor, diligence in enforcement and indulgences of every kind,
     and (ii) the taking of any other action by Bank, including without
     limitation, giving any notice of default or any other notice to, or making
     any demand on, Borrower, any other guarantor of all or any part of the
     Guaranteed Indebtedness or any other party.

          (b)  Guarantor waives any rights Guarantor has under, or any
     requirements imposed by, Chapter 34 of the Texas Business and Commerce
     Code, as in effect on the date of this Guaranty or as it may be amended
     from time to time.

          (c)  Bank may at any time, without the consent of or notice to
     Guarantor, without incurring responsibility to Guarantor and without
     impairing, releasing, reducing or affecting the obligations of Guarantor
     hereunder: (i) change the manner, place or terms of payment of all or any
     part of the Guaranteed Indebtedness, or renew, extend, modify, rearrange or
     alter all or any part of the Guaranteed Indebtedness; (ii) change the
     interest rate accruing on any of the Guaranteed Indebtedness (including,
     without limitation, any periodic change in such interest rate that occurs
     because such Guaranteed Indebtedness accrues interest at a variable irate
     which may fluctuate from time to time); (iii) sell, exchange, release,
     surrender, subordinate, realize upon or otherwise deal with in any manner
     and in any order any 


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<PAGE>

     collateral for all or any part of the Guaranteed Indebtedness or this 
     Guaranty or setoff against all or any part of the Guaranteed Indebtedness;
     (iv) neglect, delay, omit, fail or refuse to take or prosecute any action 
     for the collection of all or any part of the Guaranteed Indebtedness or 
     this Guaranty or to take or prosecute any action in connection with any of
     the Loan Documents; (v) exercise or refrain from exercising any rights 
     against Borrower or others, or otherwise act or refrain from acting; 
     (vi) settle or compromise all or any part of the Guaranteed Indebtedness 
     and subordinate the payment of all or any part of the Guaranteed 
     Indebtedness to the payment of any obligations, indebtedness or liabilities
     which may be due or become due to Bank or others; (vii) apply any deposit 
     balance, fund, payment, collections through process of law or otherwise or
     other collateral of Borrower to the satisfaction and liquidation of the 
     indebtedness or obligations of Borrower to Bank, if any, not guaranteed 
     under this Guaranty pursuant to paragraph 4 or 11 herein; and (viii) apply
     any sums paid to Bank by Guarantor, Borrower or others to the Guaranteed 
     Indebtedness in such order and manner as Bank, in its sole discretion, 
     may determine.

          (d)  Notwithstanding any provision in this Guaranty to the contrary,
     Guarantor hereby waives and releases (i) any and all rights of subrogation,
     reimbursement, indemnification or contribution which it may have after
     payment in full or in part of the Guaranteed Indebtedness against others
     liable on all or any part of the Guaranteed Indebtedness, (ii) any and all
     rights to be subrogated to the rights of Bank in any collateral or security
     for all or any part of the Guaranteed Indebtedness after payment in full or
     in part of the Guaranteed Indebtedness, and (iii) any and all other rights
     and claims of Guarantor against Borrower or any third party as a result of
     Guarantor's payment of all or any part of the Guaranteed Indebtedness.

          (e)  Should Bank seek to enforce the obligations of Guarantor
     hereunder by action in any court or otherwise, Guarantor waives any
     requirement, substantive or procedural, that (i) Bank first enforce any
     rights or remedies against Borrower or any other person or entity liable to
     Bank for all or any part of the Guaranteed Indebtedness, including without
     limitation that a judgment first be rendered against Borrower or any other
     person or entity, or that Borrower or any other person or entity should be
     joined in such cause, or (ii) Bank shall first enforce rights against any
     collateral which shall ever have been given to secure all or any part of
     the Guaranteed Indebtedness or this Guaranty. Such waiver shall be without
     prejudice to Bank's right, at its option, to proceed against Borrower or
     any other person or entity, whether by separate action or by joinder.

          (f)  In addition to any other waivers, agreements and covenants of
     Guarantor set forth herein, Guarantor hereby further waives and releases
     all claims, causes of action, defenses and offsets for any act or omission
     of Bank its directors, officers, employees, representatives or agents in
     connection with Bank's administration of the Guaranteed Indebtedness,
     except for Bank's willful misconduct and gross negligence.


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     8.   OBLIGATIONS NOT IMPAIRED.

          (a)  Guarantor agrees that its obligations hereunder shall not be
     released, diminished, impaired, reduced or affected by the occurrence of
     any one or more of the following events: (i) the death, disability or lack
     of corporate power of Borrower, Guarantor (except as provided in paragraph
     11 herein) or any other guarantor of all or any part of the Guaranteed
     Indebtedness, (ii) any receivership, insolvency, bankruptcy or other
     proceedings affecting Borrower, Guarantor or any other guarantor of all or
     any part of the Guaranteed Indebtedness, or any of their respective
     property; (iii) the partial or total release or discharge of Borrower or
     any other guarantor of all or any part of the Guaranteed Indebtedness, or
     any other person or entity from the performance of any obligation contained
     in any instrument or agreement evidencing, governing or securing all or any
     part of the Guaranteed Indebtedness, whether occurring by reason of law or
     otherwise; (iv) the taking or accepting of any collateral for all or any
     part of the Guaranteed Indebtedness or this Guaranty; (v) the taking or
     accepting of any other guaranty for all or any part of the Guaranteed
     Indebtedness; (vi) any failure by Bank to acquire, perfect or continue any
     lien or security interest on collateral securing all or any part of the
     Guaranteed Indebtedness or this Guaranty; (vii) the impairment of any
     collateral securing all or any part of the Guaranteed Indebtedness or this
     Guaranty; (viii) any failure by Bank to sell any collateral securing all or
     any part of the Guaranteed Indebtedness or this Guaranty in a commercially
     reasonable manner or as otherwise required by law; (ix) any invalidity or
     unenforceability of or defect or deficiency in any of the Loan Documents;
     or (x) any other circumstance which might otherwise constitute a defense
     available to, or discharge of, Borrower or any other guarantor of all or
     any part of the Guaranteed Indebtedness.

          (b)  This Guaranty shall continue to be effective or be reinstated, as
     the case may be, if at any time any payment of all or any part of the
     Guaranteed Indebtedness is rescinded or must otherwise be returned by Bank
     upon the insolvency, bankruptcy or reorganization of Borrower, Guarantor,
     any other guarantor of all or any part of the Guaranteed Indebtedness, or
     otherwise, all as though such payment had not been made.

          (c)  In the event Borrower is a corporation, joint stock association
     or partnership, or is hereafter incorporated, none of the following shall
     affect Guarantor's liability hereunder: (i) the unenforceability of all or
     any part of the Guaranteed Indebtedness against Borrower by reason of the
     fact that the Guaranteed Indebtedness exceeds the amount permitted by law;
     (ii) the act of creating all or any part of the Guaranteed Indebtedness is
     ultra vires; or (iii) the officers or partners creating all or any part of
     the Guaranteed Indebtedness acted in excess of their authority.  Guarantor
     hereby acknowledges that withdrawal from, or termination of, any ownership
     interest in Borrower now or hereafter owned or held by Guarantor shall not
     alter, affect or in any way limit the obligations of Guarantor hereunder.


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     9.   ACTIONS AGAINST GUARANTOR. In the event of a default in the payment or
performance of all or any part of the Guaranteed Indebtedness when such
Guaranteed Indebtedness becomes due, whether by its terms, by acceleration or
otherwise, Guarantor shall, without notice or demand, promptly pay the amount
due thereon to Bank in lawful money of the United States, at Bank's address set
forth in subparagraph 1(a) above. One or more successive or concurrent actions
may be brought against Guarantor, either in the same action in which Borrower is
sued or in separate actions, as often as Bank deems advisable. The exercise by
Bank of any right or remedy under this Guaranty or under any other agreement or
instrument, at law, in equity or otherwise, shall not preclude concurrent or
subsequent exercise of any other right or remedy. The books and records of Bank
shall be admissible in evidence in any action or proceeding involving this
Guaranty and shall be PRIMA FACIE evidence of the payments made on, and the
outstanding balance of, the Guaranteed Indebtedness.

     10.  PAYMENT BY GUARANTOR. whenever Guarantor pays any sum which is or may
become due under this Guaranty, written notice must be delivered to Bank
contemporaneously with such payment. Such notice shall be effective for purposes
of this paragraph when contemporaneously with such payment Bank receives such
notice either by: (a) personal delivery to the address and designated department
of Bank identified in subparagraph 1(a) above, or (b) United States mail,
certified or registered, return receipt requested, postage prep aid, addressed
to Bank at the address shown in subparagraph 1(a) above.  In the absence of such
notice to Bank by Guarantor in compliance with the provisions hereof, any sum
received by Bank on account of the Guaranteed Indebtedness shall be conclusively
deemed paid by Borrower.

     11.  DEATH OF GUARANTOR. In the event of the death of Guarantor, any 
duly authorized representative of the estate of Guarantor may revoke 
Guarantor's future obligations under this Guaranty by giving Bank written 
notice of Guarantor's death and that the estate of Guarantor shall not be 
liable hereunder for any indebtedness or obligations of Borrower incurred on 
or after the effective date of such revocation. Such revocation shall be 
deemed to be effective on the day following the day Bank receives such notice 
delivered either by: (a) personal delivery to the address and designated 
department of Bank identified in subparagraph 1(a) above, or (b) United 
States mail, registered or certified, return receipt requested, postage prep 
aid, addressed to Bank at the address shown in subparagraph 1(a) above. 
Notwithstanding such revocation, the obligations of the deceased Guarantor 
shall continue as an obligation against his estate as to (x) all of the 
Guaranteed Indebtedness that is outstanding on the effective date of such 
revocation, and any renewals or extensions thereof, and (y) all loans, 
advances and other extensions of credit made to or for the account of 
Borrower on or after the effective date of such revocation pursuant to an 
obligation of Bank under a commitment or agreement made to or with Borrower 
prior to the effective date of such revocation. The terms and conditions of 
this Guaranty, including without limitation the consents and waivers set 
forth in paragraph 7 hereof, shall remain in effect with respect to the 
Guaranteed Indebtedness described in the preceding sentence in the same 
manner as if such revocation had not been made.


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     12.  NOTICE OF SALE. In the event that Guarantor is entitled to receive any
notice under the Uniform Commercial Code, as it exists in the state governing
any such notice, of the sale or other disposition of any collateral securing all
or any part of the Guaranteed Indebtedness or this Guaranty, reasonable notice
shall be deemed given when such notice is deposited in the United States mail,
postage prepaid, at the address for Guarantor set forth in subparagraph 1(d)
above, five (5) days prior to the date any public sale, or after which any
private sale, of any such collateral is to be held; PROVIDED, HOWEVER, that
notice given in any other reasonable manner or at any other reasonable time
shall be sufficient.

     13.  WAIVER BY BANK. No delay on the part of Bank in exercising any right
hereunder or failure to exercise the same shall operate as a waiver of such
right. In no event shall any waiver of the provisions of this Guaranty be
effective unless the same be in writing and signed by an officer of Bank, and
then only in the specific instance and for the purpose given.

     14.  SUCCESSORS AND ASSIGNS. This Guaranty is for the benefit of Bank, its
successors and assigns. This Guaranty is binding upon Guarantor and Guarantor's
heirs, executors, administrators, personal representatives and successors,
including without limitation any person or entity obligated by operation of law
upon the reorganization, merger, consolidation or other change in the
organizational structure of Guarantor.

     15.  COSTS AND EXPENSES. Guarantor shall pay on demand by Bank all costs
and expenses, including without limitation, all reasonable attorneys' fees
incurred by Bank in connection with the preparation, administration, enforcement
and/or collection of this Guaranty. This covenant shall survive the payment of
the Guaranteed Indebtedness.

     16.  SEVERABILITY. If any provision of this Guaranty is held by a court of
competent jurisdiction to be illegal, invalid or unenforceable under present or
future laws, such provision shall be fully severable, shall not impair or
invalidate the remainder of this Guaranty and the effect thereof shall be
confined to the provision held to be illegal, invalid or unenforceable.

     17.  NO OBLIGATION. Nothing contained herein shall be construed as an
obligation on the part of Bank to extend or continue to extend credit to
Borrower.

     18.  AMENDMENT. No modification or amendment of any provision of this
Guaranty, nor consent to any departure by Guarantor therefrom, shall be
effective unless the same shall be in writing and signed by an officer of Bank,
and then shall be effective only in the specific instance and for the purpose
for which given.

     19.  CUMULATIVE RIGHTS. All rights and remedies of Bank hereunder are
cumulative of each other and of every other right or remedy which Bank may
otherwise have at law or in equity or under any instrument or agreement, and the
exercise of one or more of such rights or remedies shall not prejudice or impair
the concurrent or subsequent exercise of any other fights or remedies.


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     20.  GOVERNING LAW. THIS GUARANTY SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS AND APPLICABLE FEDERAL LAWS.

     21.  VENUE. This Guaranty has been entered into in the county in Texas
where Bank's address for notice purposes is located, and it shall be performable
for all purposes in such county. Courts within the State of Texas shall have
jurisdiction over any and all disputes arising under or pertaining to this
Guaranty and venue for any such disputes shall be in the county or judicial
district where the Bank's address for notice purposes is located.

     22.  COMPLIANCE WITH APPLICABLE USURY LAWS. Notwithstanding any other
provision of this Guaranty or of any instrument or agreement evidencing,
governing or securing all or any part of the Guaranteed Indebtedness, Guarantor
and Bank by its acceptance hereof agree that Guarantor shall never be required
or obligated to pay interest in excess of the maximum nonusurious interest rate
as may be authorized by applicable law for the written contracts which
constitute the Guaranteed Indebtedness. It is the intention of Guarantor and
Bank to conform strictly to the applicable laws which limit interest rates, and
any of the aforesaid contracts for interest, if and to the extent payable by
Guarantor, shall be held to be subject to reduction to the maximum nonusurious
interest rate allowed under said law.

     23.  DESCRIPTIVE HEADINGS. The headings in this Guaranty are for
convenience only and shall not define or limit the provisions hereof.

     24.  GENDER. Within this Guaranty, words of any gender shall be held and
construed to include the other gender.

     25.  ENTIRE AGREEMENT. This Guaranty contains the entire agreement between
Guarantor and Bank regarding the subject matter hereof and supersedes all prior
written and oral agreements and understandings, if any, regarding same;
provided, however, this Guaranty is in addition to and does not replace, cancel,
modifY or affect any other guaranty of Guarantor now or hereafter held by Bank
that relates to Borrower or any other person or entity.

     EXECUTED as of the date first above written.



                                       GUARANTOR:


                                       /s/ JERE W. THOMPSON, JR.
                                       ---------------------------------------
                                       Jere W. Thompson, Jr.






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<PAGE>

                                                                   [EXECUTION]

                                LOAN AGREEMENT

                                 July 1, 1996

Mr. Jere W. Thompson, Jr.
President
CapRock Fiber Network, Ltd.
Two Galleria Tower
13455 Noel Road, Ste. 1925
Dallas, Texas 75240-6638

Ladies and Gentlemen:

     This Loan Agreement (the "LOAN AGREEMENT") will serve to set forth the
terms of the financing transactions by and between CAPROCK FIBER NETWORK, LTD.
("BORROWER"), and BANK ONE, TEXAS, NATIONAL ASSOCIATION ("BANK"):

     1.   CREDIT FACILITY. Subject to the terms and conditions set forth in this
Loan Agreement and the other agreements, instruments and documents evidencing,
securing, governing, guaranteeing and/or pertaining to the Loans, as hereinafter
defined (collectively, together with the Loan Agreement, referred to hereinafter
as the "LOAN DOCUMENTS"), Bank hereby agrees to make advances to Borrower, on a
non-revolving basis from time to time during the period commencing on the date
hereof and continuing through and including 11:00 a.m. (Central time) on
December 31, 1996, an aggregate amount not to exceed $10,000,000 (the "MAXIMUM
LOAN AMOUNT") in a single advance or in multiple advances, as may be requested
by Borrower from time to time. Each advance must be greater than or equal to
$100,000 or must equal the unadvanced portion of the Maximum Loan Amount.
Borrower shall give prior written notice, or telephonic notice, of any requested
advance. Each written request must be made in the form of Exhibit B, duly
completed, and accompanied by copies of billing statements, vouchers, or
invoices evidencing the obligation of Borrower to pay amounts in excess of
$10,000 per statement for services rendered or materials actually acquired or
furnished in connection with the construction of the Network (as defined below).
Bank reserves the right to require Borrower to give Bank not less than one (1)
business day prior notice of each requested advance. Each telephone request
shall be deemed a representation, warranty, agreement and acknowledgment by
Borrower as to the matters which are to be set out in a written confirmation.
All advances to Borrower hereunder shall be collectively called the "LOAN". All
sums advanced under the Loan shall be for construction, start-up and related
expenses of a fiber optic network from Corpus Christi to Houston, Texas (the
"NETWORK").

     2.   PROMISSORY NOTE. The Loan shall be evidenced by a promissory note
(together with any renewals, extensions, modifications and increases thereof,
the "NOTE") duly executed by Borrower and payable to the order of Bank, in the
form of Exhibit A attached hereto and incorporated herein by reference. Interest
on the Note shall accrue at the rate set forth

<PAGE>
CapRock Fiber Network, Ltd.
July 1, 1996
Page 2

therein. The principal of and interest on the Note shall be due and payable in
accordance with the terms and conditions set forth in the Note and in this
Loan Agreement.

     3.   ORIGINATION FEE. On the date hereof, Borrower will pay to Bank an
origination fee in the amount of $100,000.

     4.   COLLATERAL. Collateral and security for the indebtedness evidenced by
the Note and any and all other indebtedness or obligations from time to time
owing by Borrower to Bank includes (i) the Deed of Trust, Mortgage, Security
Agreement and Assignment of Rents effective as of June 26, 1996 (the "Mortgage")
from Borrower for the benefit of Bank covering certain real and personal
property (the "Mortgage Collateral") therein described and referred to and (ii)
the Securities Pledge Agreement of even date herewith (the "Securities Pledge")
from Mark Langdale for the benefit of Bank covering a securities account
established with Banc One Securities Corporation (the "Securities Collateral").
Borrower agrees to execute such further security agreements, assignments, deeds
of trust and other agreements and documents as Bank shall deem appropriate and
necessary from time to time to more fully create and perfect Bank's lien and
security interests in the Mortgage Collateral and the Securities Collateral.

     5.   GUARANTORS. As a condition precedent to Bank's obligation to make the
Loan to Borrower, Borrower agrees to cause (i) CapRock Systems, Inc., Jere W.
Thompson, Jr., and Mark Langdale (the "UNLIMITED GUARANTORS") to each execute
and deliver to Bank contemporaneously herewith an unlimited, continuing guaranty
agreement, in form and substance satisfactory to Bank, and (ii) Jere W.
Thompson, Sr., The Hayden Company, The Florida Company, and Joe C. Thompson, Jr.
(the "LIMITED GUARANTORS", together with the Unlimited Guarantors, sometimes
collectively referred to herein as the "GUARANTORS") to each execute and deliver
to Bank contemporaneously herewith a limited guaranty agreement (collectively
with the guaranties executed by the Unlimited Guarantors, the "GUARANTIES"), in
form and substance satisfactory to Bank.

     6.   COMPLETION OF THE NETWORK. Promptly following completion of the
Network, Borrower shall provide to Lender a "Completion Certificate" in the form
of Exhibit C, duly completed. The Completion Certificate shall be accompanied by
copies of any billing statements, vouchers or invoices (not previously provided
to Lender) of Borrower for amounts in excess of $10,000 per statement for
services rendered or materials actually acquired or furnished in connection with
the construction of the Network. In addition to the foregoing, Borrower shall
also provide to Lender true, correct and complete copies of the notification by
Sprint Communications Company L.P. of its acceptance of the Network.

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CapRock Fiber Network, Ltd.
July 1, 1996
Page 3

     The Guaranties of the Limited Guarantors shall be automatically terminated
upon the occurrence of the following: (i) receipt by Bank of a Completion
Certificate and written notification of acceptance of the Network by Sprint
Communications Company LP. (ii) the continuous operation of the Network for a
period of three (3) consecutive months after the date of the Completion
Certificate (the "Operational Period'), (iii) at the end of the Operational
Period, no Event of Default (as defined below) shall be continuing with respect
to the covenants set forth in Section 12 hereof and (iv) no Event of Default
other than (a) those described in the immediately preceding clause (iii) or (b)
an Event of Default resulting from a breach of the covenants of Mark Langdale
set forth in Section 10 of his Guaranty shall have occurred during the
Operational Period. Promptly thereafter, Bank shall prepare and deliver at
Borrower's expense a termination of the Guaranty of each Limited Guarantor in
the form attached hereto as Exhibit D.

     7.   REPRESENTATIONS AND WARRANTIES. Borrower hereby represents and
warrants, and upon each request for an advance under the Loan further represents
and warrants, to Bank as follows:

          (a)  EXISTENCE. Borrower is a limited partnership duly organized,
     validly existing and in good standing under the laws of the State of Texas
     and all other states where it is doing business, and has all requisite
     power and authority to execute and deliver the Loan Documents.

          (b)  BINDING OBLIGATIONS. The execution, delivery, and performance of
     this Loan Agreement and all of the other Loan Documents by Borrower have
     been duly authorized by all necessary action by Borrower, and constitute
     legal, valid and binding obligations of Borrower, enforceable in accordance
     with their respective terms, except as limited by bankruptcy, insolvency or
     similar laws of general application relating to the enforcement of
     creditors' rights and except to the extent specific remedies may generally
     be limited by equitable principles.

          (c)  NO CONSENT. The execution, delivery and performance of this Loan
     Agreement and the other Loan Documents, and the consummation of the
     transactions contemplated hereby and thereby, do not (i) conflict with,
     result in a violation of, or constitute a default under (A) any provision
     of its partnership agreement or any agreement or other instrument binding
     upon Borrower, or (B) any law, governmental regulation, court decree or
     order applicable to Borrower, or (ii) require the consent, approval or
     authorization of any third party.

          (d)  FINANCIAL CONDITION. Each financial statement of Borrower
     supplied to the Bank truly discloses and fairly presents Borrower's
     financial condition as of the

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CapRock Fiber Network, Ltd.
July 1, 1996
Page 4

     date of each such statement in every material respect. There has been no
     material adverse change in such financial condition or results of
     operations of Borrower subsequent to the date of the most recent financial
     statement supplied to the Bank.

          (e)  LITIGATION. There are no actions, suits or proceedings, pending
     or, to the knowledge of Borrower, threatened against or affecting Borrower
     or the properties of Borrower, before any court or governmental department,
     commission or board, which, if determined adversely to Borrower, would have
     a material adverse effect on the financial condition, properties, or
     operations of Borrower.

          (f)  TAXES; GOVERNMENTAL CHARGES. Borrower has filed all federal,
     state and material local tax reports and returns required by any law or
     regulation to be filed by it and has either duly paid all taxes, duties and
     charges indicated due on the basis of such returns and reports or is
     contesting the payment thereof in good faith and by proper proceedings, or
     made adequate provision for the payment thereof, and the assessment of any
     material amount of additional taxes in excess of those paid and reported is
     not reasonably expected.

     8.   CONDITIONS PRECEDENT TO MAKING THE LOAN. Bank's obligation to make any
advance (including the first) under this Loan Agreement and the other Loan
Documents shall be subject to the conditions precedent that, as of the date
hereof after giving effect to such advance the following conditions have been
met:

          (a)  DOCUMENTS TO BE DELIVERED.  Bank shall have received all of the
     following, at Bank's offices in Dallas, Texas, duly executed and delivered
     and in form, substance and date satisfactory to Lender:

               (i)    The Note.

               (ii)   The Mortgage.

               (iii)  The Guaranties.

               (iv)   The Securities Pledge.

               (v)    An "Omnibus Certificate" of the Secretary of CapRock
          Systems, Inc., the general partner of Borrower ("GENERAL PARTNER"),
          which shall contain the names and signatures of the officers of
          General Partner authorized to execute Loan Documents and which shall
          certify to the truth, correctness and completeness of the following
          exhibits attached thereto: (1) a copy of

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July 1, 1996
Page 5

          resolutions duly adopted by the Board of Directors of General
          Partner and in full force and effect at the time this Agreement is
          entered into, authorizing the execution of this Agreement and the
          other Loan Documents delivered or to be delivered in connection
          herewith and the consummation of the transactions contemplated
          herein and therein, (2) a copy of the charter documents of Borrower
          and General Partner and all amendments thereto, certified by the
          appropriate official of Borrower's and General Partner's states of
          organization, and (3) a copy of any bylaws of General Partner.

               (vi)   A certificate (or certificates) of the due formation,
          valid existence and good standing of Borrower in its state of
          organization, issued by the appropriate authorities of such
          jurisdiction.

               (vii)  A favorable opinion of (i) Baker & Botts, L.L.P., special
          counsel for Borrower, General Partner and Guarantors, substantially in
          the form of Exhibit E-1 and (ii) Crouch & Hallett LLP, counsel for
          Borrower and General Partner, substantially in the form of Exhibit
          E-2.

               (viii) Documents similar to those specified in subsections (v)
          and (vi) of this section with respect to each Guarantor which is a
          trust, partnership, limited liability company or corporation.

               (ix)   A Notice of Final Agreement in the form attached as
          Exhibit

               (x)    The Agreement executed by Sprint Communications Company
          L.P. in the form attached as Exhibit G.

          (b)  ADDITIONAL CONDITIONS PRECEDENT. Bank has no obligation to make
     any advance (including the first) unless the following conditions precedent
     have been satisfied:

               (i)    all representations and warranties made to Bank in this
          Loan Agreement and the other Loan Documents shall be true and correct,
          as of and as if made on the date of such advance.

               (ii)   No material adverse change in the financial condition of
          Borrower since the effective date of the most recent financial
          statements furnished to Bank by Borrower shall have occurred and be
          continuing.

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CapRock Fiber Network, Ltd.
July 1, 1996
Page 6

               (iii)  No event has occurred and is continuing, or would result
          from making such advance, which with notice or lapse of time, or both,
          would constitute an Event of Default (as hereinafter defined).

               (iv)   No Guarantor providing an unlimited guaranty is in default
          in the terms of any agreement governing indebtedness of such Guarantor
          in excess of $100,000 between Guarantor and Bank, or between Guarantor
          and any third party.

               (v)    No litigation or proceedings shall be pending or
          threatened which may reasonably be expected to materially adversely
          affect Borrower's financial condition.

               (vi)   The making of such advance shall not be prohibited by any
          law or any regulation or order of any court or governmental agency or
          authority and shall not subject Bank to any penalty or other onerous
          condition under or pursuant to any such law, regulation or order.

               (vii)  All legal matters relating to the Loan Documents and the
          consummation of the transactions contemplated thereby shall be
          satisfactory to Thompson & Knight, P.C., counsel to Bank.

     9.   AFFIRMATIVE COVENANTS.  Until (i) the Note and all other obligations
and liabilities of Borrower under this Loan Agreement and the other Loan
Documents are fully paid and satisfied, and (ii) the Bank has no further
commitment to lend hereunder, Borrower agrees and covenants that it will, unless
Bank shall otherwise consent in writing:

          (a)  ACCOUNTS AND RECORDS. Maintain its books and records in
     accordance with generally accepted accounting principles.

          (b)  RIGHT OF INSPECTION. Permit Bank to visit its properties and
     installations and to examine, audit and make and take away copies or
     reproductions of Borrower's books and records, at all reasonable times.

          (c)  RIGHT TO ADDITIONAL INFORMATION. Furnish Bank with such
     additional information and statements, lists of assets and liabilities, tax
     returns, and other reports with respect to Borrower's financial condition
     and business operations as Bank may reasonably request from time to time.

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CapRock Fiber Network, Ltd.
July 1, 1996
Page 7

          (d)  COMPLIANCE WITH LAWS. Perform and comply, in all material
     respects, with all statutes, rules, regulations and/or ordinances imposed
     by any governmental unit upon Borrower its businesses, operations and
     properties (including without limitation, all applicable environmental
     statutes, rules, regulations and ordinances).

          (e)  TAXES.  Pay and discharge when due all of its indebtedness and
     obligations, including without limitation, all assessments, taxes,
     governmental charges, levies and liens, of every kind and nature, imposed
     upon Borrower or its properties, income, or profits, prior to the date on
     which penalties would attach, and all-lawful claims that, if unpaid, might
     become a lien or charge upon any of Borrower's properties, income, or
     profits; provided, however, Borrower will not be required to pay and
     discharge any such assessment, tax, charge, levy, lien or claim so long as
     (i) the legality of the same shall be contested in good faith by
     appropriate judicial, administrative or other legal proceedings, and (ii)
     Borrower shall have established on its books adequate reserves with respect
     to such contested assessment, tax, charge, levy, lien or claim in
     accordance with generally accepted accounting principles, consistently
     applied.

          (f)  INSURANCE. Maintain insurance on all property of a character
     usually insured by entities engaged in the same or similar business
     similarly situated against loss or damage of the kinds and in the amounts
     customarily insured against by such entities.

          (g)  NOTICE OF INDEBTEDNESS.  Promptly inform Bank of the creation,
     incurrence or assumption by Borrower of any actual or contingent
     liabilities not permitted under this Loan Agreement

          (h)  NOTICE OF LITIGATION. Promptly after the commencement thereof,
     notify Bank of all actions, suits and proceedings before any court or any
     governmental department, commission or board affecting Borrower or any of
     its properties which could reasonably be expected to materially adversely
     affect the financial condition of Borrower.

          (i)  NOTICE OF MATERIAL ADVERSE CHANGE. Promptly inform Bank of (i)
     any and all material adverse changes in Borrower's financial condition, and
     (ii) all claims made against Borrower which could reasonably be expected to
     materially adversely affect the financial condition of Borrower.

          (j)  ADDITIONAL DOCUMENTATION.  Execute and deliver, or cause to be
     executed and delivered, any and all other agreements, instruments or
     documents

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CapRock Fiber Network, Ltd.
July 1, 1996
Page 8

     which Bank may reasonably request in order to give effect to the
     transactions contemplated under this Loan Agreement and the other Loan
     Documents. Borrower agrees to deliver to further secure the Loan when
     requested by Lender in its sole and absolute discretion, deeds of trust,
     mortgages, security agreements and financing statements in form and
     substance satisfactory to Lender for the purpose of granting, confirming,
     and perfecting first and prior liens or security interest in any real or
     personal property now owned or hereafter acquired by Borrower.

          (k)  SOUTHWESTERN BELL AGREEMENT. Within sixty (60) days from the date
     hereof, deliver to Lender a copy of the Agreement between Southwestern Bell
     Communications and Borrower, certified by Borrower as being a true, correct
     and complete copy.

     10.  NEGATIVE COVENANTS. Until (i) the Note and all other obligations and
liabilities of Borrower under this Loan Agreement and the other Loan Documents
are fully paid and satisfied, and (ii) the Bank has no further commitment to
lend hereunder, Borrower will not, without the prior written consent of Bank:

          (a)  NATURE OF BUSINESS. Make any material change in the nature of its
     business as carried on as of the date hereof.

          (b)  LIQUIDATIONS MERGERS CONSOLIDATIONS. Liquidate, merge or
     consolidate with or into any other entity.

          (c)  SALE OF ASSETS. Sell, transfer or otherwise dispose of any of its
     assets or properties, other than in the ordinary course of business.

          (d)  LIENS. Create or incur any lien or encumbrance on any of its
     assets, other than (i) liens and security interests securing indebtedness
     owing to Bank, (ii) liens for taxes, assessments or similar charges which
     are: (1) not yet due or (2) being contested in good faith by appropriate
     proceedings and for which Borrower has established adequate reserves, (iii)
     liens and security interest existing as of the date hereof which have been
     disclosed to and approved by the Bank in writing, (iv) as to property which
     is not Mortgage Collateral, liens and security interests securing
     indebtedness described in Section 10(e)(iii), (v) liens imposed by
     mandatory provisions of law such as for materialmen's, mechanic's,
     warehousemen's and other liens arising in the ordinary course of business,
     securing obligations whose payment is not yet due, and (vi) encumbrances
     consisting of zoning restrictions, easements, or other restrictions on the
     use of real property, provided that such items do not impair the use of
     such property for the purposes intended, and none of which is violated by

<PAGE>
CapRock Fiber Network, Ltd.
July 1, 1996
Page 9

     existing or proposed structures or land use, unless such violation would
     not be reasonably be expected to have a material adverse effect on the
     financial condition of Borrower or the completion of the Network.

          (e)  INDEBTEDNESS. Create, incur or assume any indebtedness for
     borrowed money or issue or assume any other note, debenture, bond or other
     evidences of indebtedness, or guarantee any such indebtedness or such
     evidences of indebtedness of others, other than (i) borrowings from Bank,
     (ii) borrowings outstanding on the date hereof and disclosed in writing to
     Bank and (iii) miscellaneous items of indebtedness not described in clauses
     (i) and (ii) of this subsection (e) which do not in the aggregate exceed
     $50,000 at any one time outstanding.

          (f)  TRANSFER OF OWNERSHIP. Permit the sale, pledge or other transfer
     of any of the ownership interest in Borrower (i) to any person who is not a
     partner of Borrower on the date hereof (other than by will, devise or
     intestacy) or (ii) which has the net effect of reducing the ownership
     interest of any Unlimited Guarantor (other than in accordance with the
     terms of the limited partnership agreement of Borrower).

          (g)  CHANGE IN MANAGEMENT. Permit a change in the senior management of
     Borrower.

          (h)  LOANS. Make any loans to any person or entity.

          (i)  TRANSACTIONS WITH AFFILIATES.  Enter into any transaction,
     including, without limitation, the purchase, sale or exchange of property
     or the rendering of any service, with any Affiliate (as hereinafter
     defined) of Borrower, except in the ordinary course of and pursuant to the
     reasonable requirements of Borrower's business and upon fair and reasonable
     terms no less favorable to Borrower than would be obtained in a comparable
     arm's-length transaction with a person or entity not an Affiliate of
     Borrower. As used herein, the term "AFFILIATE" means any individual or
     entity directly or indirectly controlling, controlled by, or under common
     control with, another individual or entity.

          (j)  DIVIDENDS. Borrower agrees not to make any Distributions except
     for cash Distributions to the partners of Borrower for the payment by such
     partner or partners of federal or state income taxes on such partner or
     partners' proportionate share of Borrower's taxable income. In the event
     Borrower makes any Distributions pursuant to the immediately preceding
     sentence, Borrower will provide to Bank a certificate of the Chief
     Financial Officer of General Partner certifying that such Distribution was
     made in compliance with this Section 10(j). Borrower shall also

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July 1, 1996
Page 10

     provide Bank with a copy of the K-1 Supplemental Exhibit to Internal
     Revenue Service Form 1065 relating to such partner or partners at the
     same time the K-1 is made available to the partner or partners. As used
     herein, "DISTRIBUTIONS" shall mean all distributions made by Borrower to
     its partners, other than salary, bonuses and other compensation for
     services. Notwithstanding the foregoing, at any time after December 31,
     1997, so long as the fixed charge ratio of Borrower calculated in
     accordance with Section 11(c) below for the then most recently ended
     period of four consecutive fiscal quarters is greater than 1.3 to 1.0,
     Borrower may pay commitment fees to the Guarantors, provided that all
     such guaranty commitment fees may be made only out of Excess Cash flow
     (as defined in the Note) remaining after the payment by Borrower of all
     required Excess Cash Flow Payments (as defined in the Note) and provided
     further that both prior to and immediately after giving effect to, the
     payment of such guaranty commitment fees (i) no Event of Default has
     occurred and is continuing and (ii) the fixed charge ratio of Borrower
     calculated in accordance with Section 11(c) is greater than 1.1 to 1.0.

     11.  FINANCIAL COVENANTS. Until (i) the Note and all other obligations and
liabilities of Borrower under this Loan Agreement and the other Loan Documents
are fully paid and satisfied, and (ii) the Bank has no further commitment to
lend hereunder, Borrower will maintain the following financial covenants:

          (a)  CASH RESERVES. Borrower will maintain, at all times from and
     after December 31, 1996, cash reserves in an amount not less than $100,000.

          (b)  DEBT TEST. Borrower's Debt to Adjusted Income shall not be
     greater than (A) 5.0 to 1.0 as of December 31, 1997, (B) 4.5 to 1.0 as of
     March 31, 1998 and as of each fiscal quarter thereafter through December
     31,1998, (C) 4.0 to 1.0 as of March 31, 1999 and as of each fiscal quarter
     through December 31, 1999, (D) 3.5 to 1.0 as of March 31, 2000 and as of
     each fiscal quarter through December 31, 2000, and (E) 3.0 to 1.0 as of
     March 31, 2001 and as of each fiscal quarter thereafter. As used in this
     subsection, the term "BORROWER'S DEBT TO ADJUSTED INCOME" means as of the
     end of any fiscal quarter, a ratio of (a) the then outstanding principal
     amount of the Loan to (b) the net income of Borrower before Tax
     Distributions (as defined below) plus interest expenses, depreciation,
     amortization and other non-cash expenses of Borrower for the then most
     recently ended period of four consecutive fiscal quarters.  The term "TAX
     DISTRIBUTIONS" means for any period, the amount of Distributions for the
     payment by the partner or partners of Borrower of federal or state income
     taxes on such partner or partners' proportionate share of Borrower's
     taxable income, provided that for purposes of the calculation of the
     financial

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CapRock Fiber Network, Ltd.
July 1, 1996
Page 11

     covenants set forth in this Section 11, a forty percent (40%) tax rate
     for each such partner shall be assumed.

          (c)  FIXED CHARGE RATIO. Borrower will maintain, as of December 31,
     1997 and as of each fiscal quarter thereafter, a ratio of (a) net income of
     Borrower after Tax Distributions plus depreciation, amortization and other
     non-cash expenses and interest expenses for the then most recently ended
     period of four consecutive fiscal quarters to (b) interest expense and
     current maturities of long-term debt of Borrower for such period plus
     capital expenditures permitted by Section 11 (e) and actually made by
     Borrower during such four quarter period of not less than 1.1 to 1.0.

          (d)  NET INCOME. Beginning with the fiscal quarter ending March
     31,1997, and for each fiscal quarter thereafter, Borrower's net income
     after Tax Distributions for any fiscal quarter will not be less than
     $1,000.

          (e)  CAPITAL EXPENDITURES. Borrower will not make capital expenditures
     in excess of $10,000 during any fiscal year, commencing with the fiscal
     year ending December 31, 1997, without prior written approval of Bank which
     shall not be unreasonably withheld.

Unless otherwise specified, all accounting and financial terms and covenants set
forth above are to be determined according to generally accepted accounting
principles, consistently applied.

     12.  REPORTING REQUIREMENTS. Until (i) the Note and all other obligations
and liabilities of Borrower under this Loan Agreement and the other Loan
Documents are fully paid and satisfied, and (ii) the Bank has no further
commitment to lend hereunder, Borrower will, unless Bank shall otherwise consent
in writing, furnish to Bank:

          (a)  As soon as available, and in any event within thirty (30) days
     after the end of each month, a balance sheet, income statement and cash
     flows of Borrower as of the end of such month, all in form and substance
     and in reasonable detail satisfactory to Bank and duly certified (subject
     to year-end review adjustments) by the President and/or Chief Financial
     Officer of General Partner (i) as being true and correct in all material
     aspects to the best of his or her knowledge and (ii) as having been
     prepared in accordance with generally accepted accounting principles,
     consistently applied;

          (b)  As soon as available and in any event within one hundred-twenty
     (120) days after the end of each fiscal year of Borrower, financial
     statements of Borrower

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Page 12

     as of the end of such fiscal year, in each case audited by independent
     public accountants of recognized standing reasonably acceptable to Bank.
     These financial statements shall contain a consolidated balance sheet as
     of the end of such fiscal year and consolidated statements of earnings,
     of cash flows, and of changes in partners' capital for such fiscal year,
     each setting forth in comparative form the corresponding figures for the
     preceding fiscal year;

          (c)  A certificate in the form of Exhibit I signed by the President
     and Chief Financial Officer of General Partner, within thirty (30) days
     after the end of each month, stating that Borrower is in full compliance
     with all of its obligations under this Loan Agreement and all other Loan
     Documents (except as set forth therein) and is not in default of any term
     or provisions hereof or thereof (except as set forth therein), and
     demonstrating compliance with all financial ratios and covenants set forth
     in this Loan Agreement;

          (d)  Promptly after the receipt thereof by Borrower, a copy of any
     management letter delivered to Borrower by its independent accountants;

          (e)  As soon as available and in any event within thirty days prior to
     the beginning of each fiscal year of Borrower, annual projections of
     Borrower in a form satisfactory to and reasonably acceptable to Bank;

          (f)  Promptly inform Bank of the creation, incurrence or assumption by
     Borrower of any actual or contingent liabilities not permitted under this
     Loan Agreement;

          (g)  Promptly after the commencement thereof, notice of all actions,
     suits and proceedings before any court or any governmental department,
     commission or board affecting Borrower or any of its properties which could
     reasonably be expected to materially adversely affect the financial
     condition of Borrower;

          (h)  Promptly inform Bank of (i) any and all material adverse changes
     in Borrower's financial condition, and (ii) all claims made against
     Borrower which could materially affect the financial condition of Borrower;
     and

          (i)  Such other information respecting the business, properties or
     condition or the operations, financial or otherwise, of Borrower as Bank
     may from time to time reasonably request.

<PAGE>

CapRock Fiber Network, Ltd.
July 1, 1996
Page 13

     13.  EVENTS OF DEFAULT.  Each of the following shall constitute an "Event 
of Default" under this Loan Agreement:

          (a)  The failure, refusal or neglect of Borrower to pay within two (2)
     days after the date when due, any part of the principal of, or interest on,
     the Note or any other indebtedness or obligations owing to Bank by Borrower
     from time to time.

          (b)  The failure of Borrower or any Obligated Party (as defined below)
     to timely and properly observe, keep or perform any covenant, agreement,
     warranty or condition required herein or in any of the other Loan
     Documents, provided that (i) with respect to any default under Section 9,
     other than defaults under Section 9(d) and (f), Borrower shall have (15)
     calendar days from the date of the occurrence of such default to cure such
     default before it is deemed to be an Event of Default hereunder and (ii)
     with respect to any default under Sections 9(d) and 9(f), Borrower shall
     have fifteen (15) calendar days from the earlier of the date it becomes
     aware of a default or the receipt of written notice from Bank of a default
     to cure such default before it is deemed to be an Event of Default
     hereunder.

          (c)  The occurrence of an event of default under any of the other Loan
     Documents or under any other agreement now existing or hereafter arising
     between Bank and Borrower.

          (d)  Any representation contained herein or in any of the other Loan
     Documents made by Borrower or any Obligated Party is false or misleading in
     any material respect when or as of which made.

          (e)  The occurrence of any event which permits the acceleration of the
     maturity of any indebtedness owing by Borrower to any third party under any
     agreement or understanding.

          (f)  If Borrower or any Obligated Party: (i) becomes insolvent, or
     makes a transfer in fraud of creditors, or makes an assignment for the
     benefit of creditors, or admits in writing its inability to pay its debts
     as they become due; (ii) generally is not paying its debts as such debts
     become due; (iii) has a receiver, trustee or custodian appointed for, or
     take possession of, all or substantially all of the assets of such party,
     either in a proceeding brought by such party or in a proceeding brought
     against such party and such appointment is not discharged or such
     possession is not terminated within sixty (60) days after the effective
     date thereof or such party consents to or acquiesces in such appointment or
     possession; (iv) files a petition for relief under the United States
     Bankruptcy Code or any other present or future federal or state 

<PAGE>

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Page 14

     insolvency, bankruptcy or similar laws (all of the foregoing hereinafter 
     collectively called "APPLICABLE BANKRUPTCY LAW") or an involuntary petition
     for relief is filed against such party under any Applicable Bankruptcy Law 
     and such involuntary petition is not dismissed within sixty (60) days after
     the filing thereof, or an order for relief naming such party is entered 
     under any Applicable Bankruptcy Law, or any composition, rearrangement,
     extension, reorganization or other relief of debtors now or hereafter
     existing is requested or consented to by such party; (v) fails to have
     discharged within a period of sixty (60) days any attachment, sequestration
     or similar writ levied upon any property of such party; or (vi) fails to
     pay within sixty (60) days any final money judgment against such party.

          (g)  If Borrower or any Obligated Party is an entity, the liquidation,
     dissolution, merger or consolidation of any such entity.

Nothing contained in this Loan Agreement shall be construed to limit the 
events of default enumerated in any of the other Loan Documents and all such 
events of default shall be cumulative. The term "OBLIGATED PARTY", as used 
herein, shall mean any party other than Borrower who secures, guarantees 
and/or is otherwise obligated to pay all or any portion of the indebtedness 
evidenced by the Note.

     14.  REMEDIES. Upon the occurrence of any one or more of the foregoing 
Events of Default, (a) the entire unpaid balance of principal of the Note, 
together with all accrued but unpaid interest thereon, and all other 
indebtedness owing to Bank by Borrower under the Loan Documents at such time 
shall, at the option of Bank, become immediately due and payable without 
further notice, demand, presentation, notice of dishonor, notice of intent to 
accelerate, notice of acceleration, protest or notice of protest of any kind, 
all of which are expressly waived by Borrower, and (b) Bank may, at its 
option, cease further advances under any of the Note; PROVIDED, HOWEVER, 
concurrently and automatically with the occurrence of an Event of Default 
under SUBPARAGRAPH (f)(iii) or SUBPARAGRAPH (f)(iv) in the immediately 
preceding paragraph 13 further advances under the Note shall cease, and (ii) 
the Note and all other indebtedness owing to Bank by Borrower under the Loan 
Documents at such time shall, without any action by Bank, become due and 
payable, without further notice, demand, presentation, notice of dishonor, 
notice of acceleration, notice of intent to accelerate, protest or notice of 
protest of any kind, all of which are expressly waived by Borrower. All 
rights and remedies of Bank set forth in this Loan Agreement and in any of 
the other Loan Documents may also be exercised by Bank, at its option to be 
exercised in its sole discretion, upon the occurrence of an Event of Default.

     15.  INDEMNITY. Borrower agrees to indemnify Bank, upon demand, from and 
against any and all liabilities, obligations, claims, losses, damages, 
penalties, fines, actions, 

<PAGE>

CapRock Fiber Network, Ltd.
July 1, 1996
Page 15

judgments, suits, settlements, costs, expenses or disbursements (including 
reasonable fees of attorneys, accountants, experts and advisors) of any kind 
or nature whatsoever (in this paragraph collectively called "liabilities and 
costs") which to any extent (in whole or in part) may be imposed on, incurred 
by, or asserted against Bank growing out of, resulting from or in any other 
way associated with any of the Loan Documents, or the transactions and events 
(including the enforcement or defense thereof) at any time associated 
therewith or contemplated therein (including any violation or noncompliance 
with any Environmental Laws by Borrower). THE FOREGOING INDEMNIFICATION SHALL 
APPLY WHETHER OR NOT SUCH LIABILITIES AND COSTS IN ANY WAY OR TO ANY EXTENT 
ARISE UNDER ANY THEORY OF STRICT LIABILITY OR ARE CAUSED, IN WHOLE OR IN 
PART, BY ANY NEGLIGENT ACT OR OMISSION OF ANY KIND BY BANK, provided only 
that Bank shall be not entitled under this section to receive indemnification 
for that portion, if any, of any liabilities and costs which is proximately 
caused by its own individual gross negligence or willful misconduct, as 
determined in a final judgment. If any Person (including Borrower or any of 
its affiliates) ever alleges such gross negligence or willful misconduct by 
Bank, the indemnification provided for in this paragraph shall nonetheless be 
paid upon demand, subject to later adjustment or reimbursement, until such 
time as a court of competent jurisdiction. enters a final judgment as to the 
extent and effect of the alleged gross negligence or willful misconduct. As 
used in this section the term "Bank" shall refer not only to the Person 
designated as such in the introduction paragraph but also to each director, 
officer, agent, attorney, employee, representative and affiliate of such 
Person. For purposes of this paragraph, the term "Environmental Laws" means 
any and all federal, state, local and foreign statutes, laws, regulations, 
ordinances, rules, decrees, permits or other governmental restrictions 
relating to the environment.  The term "Person" means any individual, 
corporation, partnership, limited liability company or any other legally 
recognizable entity.

     16.  RIGHTS CUMULATIVE.  All rights of Bank under the terms of this Loan 
Agreement shall be cumulative of, and in addition to, the rights of Bank 
under any and all other agreements between Borrower and Bank (including, but 
not limited to, the other Loan Documents), and not in substitution or 
diminution of any rights now or hereafter held by Bank under the terms of any 
other agreement.

     17.  WAIVER AND AGREEMENT. Neither the failure nor any delay on the part 
of Bank to exercise any right, power or privilege herein or under any of the 
other Loan Documents shall operate as a waiver thereof, nor shall any single 
or partial exercise of such right, power or privilege preclude any other or 
further exercise thereof or the exercise of any other right, power or 
privilege. No waiver of any provision in this Loan Agreement or in any of the 
other Loan Documents and no departure by Borrower therefrom shall be 
effective unless the same shall be in writing and signed by Bank, and then 
shall be effective only in the 

<PAGE>

CapRock Fiber Network, Ltd.
July 1, 1996
Page 16

specific instance and for the purpose for which given and to the extent 
specified in such writing. No modification or amendment to this Loan 
Agreement or to any of the other Loan Documents shall be valid or effective 
unless the same is signed by the party against whom it is sought to be 
enforced.

     18.  BENEFITS. This Loan Agreement shall be binding upon and inure to 
the benefit of Bank and Borrower, and their respective successors and 
assigns, provided, however, that neither Bank nor Borrower may, without the 
prior written consent of the other, assign any rights, powers, duties or 
obligations under this Loan Agreement or any of the other Loan Documents.

     19.  NOTICES. All notices, requests, demands or other communications 
required or permitted to be given pursuant to this Agreement shall be in 
writing and given by (i) personal delivery, (ii) expedited delivery service 
with proof of delivery, or (iii) United States mail, postage prepaid, 
registered or certified mail, return receipt requested, sent to the intended 
addressee at the address set forth on the signature page hereof and shall be 
deemed to have been received either, in the case of personal delivery, as of 
the time of personal delivery, in the case of expedited delivery service, as 
of the date of first attempted delivery at the address and in the manner 
provided herein, or in the case of mail, upon deposit in a depository 
receptacle under the care and custody of the United States Postal Service. 
Either party shall have the right to change its address for notice hereunder 
to any other location within the continental United States by notice to the 
other party of such new address at least ten (10) days prior to the effective 
date of such new address.

     20.  CONSTRUCTION. This Loan Agreement and the other Loan Documents have 
been executed and delivered in the State of Texas, shall be governed by and 
construed in accordance with the laws of the State of Texas, and shall be 
performable by the parties hereto in the county in Texas where the Bank's 
address set forth on the signature page hereof is located.

     21.  INVALID PROVISIONS. If any provision of this Loan Agreement or any 
of the other Loan Documents is held to be illegal, invalid or unenforceable 
under present or future laws, such provision shall be fully severable and the 
remaining provisions of this Loan Agreement or any of the other Loan 
Documents shall remain in full force and effect and shall not be affected by 
the illegal, invalid or unenforceable provision or by its severance.

     22.  EXPENSES. Borrower shall pay all reasonable out-of-pocket costs and 
expenses (including, without limitation, reasonable attorneys' fees) in 
connection with (i) any action required in the course of administration of 
the indebtedness and obligations evidenced by 

<PAGE>

CapRock Fiber Network, Ltd.
July 1, 1996
Page 17

the Loan Documents, and (ii) any action in the enforcement of Bank's rights 
upon the occurrence of Event of Default.

     23.  ENTIRE AGREEMENT.  This Loan Agreement (together with the other 
Loan Documents) contains the entire agreement among the parties regarding the 
subject matter hereof and supersedes all prior written and oral agreements 
and understandings among the parties hereto regarding same.

     24.  CONFLICTS. In the event any term or provision hereof is 
inconsistent with or conflicts with any provision of the other Loan 
Documents, the terms and provisions contained in this Loan Agreement shall be 
controlling.

     25.  COUNTERPARTS.  This Loan Agreement may be separately executed in 
any number of counterparts, each of which shall be an original, but all of 
which, taken together, shall be deemed to constitute one and the same 
instrument.

     26.  WAIVER OF JURY TRIAL, PUNITIVE DAMAGES, ETC.  EACH OF BORROWER AND 
BANK HEREBY KNOWINGLY, VOLUNTARILY, INTENTIONALLY, AND IRREVOCABLY: (a) 
WAIVES, TO THE MAXIMUM EXTENT NOT PROHIBITED BY LAW, ANY RIGHT IT MAY HAVE TO 
A TRIAL BY JURY IN RESPECT OF ANY LITIGATION BASED HEREON, OR DIRECTLY OR 
INDIRECTLY AT ANY TIME ARISING OUT OF, UNDER OR IN CONNECTION WITH THE LOAN 
DOCUMENTS OR ANY TRANSACTION CONTEMPLATED THEREBY OR ASSOCIATED THEREWITH, 
BEFORE OR AFTER MATURITY; (b) WAIVES, TO THE MAXIMUM EXTENT NOT PROHIBITED BY 
LAW, ANY RIGHT IT MAY HAVE TO CLAIM OR RECOVER IN ANY SUCH LITIGATION ANY 
SPECIAL, EXEMPLARY, PUNITIVE OR CONSEQUENTIAL DAMAGES, OR DAMAGES OTHER THAN, 
OR IN ADDITION TO, ACTUAL DAMAGES; (c) CERTIFIES THAT NO PARTY HERETO NOR ANY 
REPRESENTATIVE OR AGENT OR COUNSEL FOR ANY PARTY HERETO HAS REPRESENTED, 
EXPRESSLY OR OTHERWISE, OR IMPLIED THAT SUCH PARTY WOULD NOT, IN THE EVENT OF 
LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVERS, AND (d) ACKNOWLEDGES THAT 
IT HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT, THE OTHER LOAN DOCUMENTS 
AND THE TRANSACTIONS CONTEMPLATED HEREBY AND THEREBY BY, AMONG OTHER THINGS, 
THE MUTUAL WAIVERS AND CERTIFICATIONS CONTAINED IN THIS PARAGRAPH.

             [The remainder of this page intentionally left blank]

<PAGE>

CapRock Fiber Network, Ltd.
July 1, 1996
Page 18

     If the foregoing correctly sets forth our mutual agreement, please so 
acknowledge by signing and returning this Loan Agreement to the undersigned.

                                     Very truly yours,

                                     BANK ONE, TEXAS, NA.




                                     By: Gina A. Norris
                                        -------------------------------
                                        Gina A. Norris
                                        Vice President

                                     Bank's Address:
                                     
                                     1717 Main Street, 3rd floor
                                     Dallas, Texas 75201
                                     Attn: Corporate Lending


ACCEPTED as of the date first
written above.

BORROWER:                            Borrower's Address:

CAPROCK FIBER NETWORK, LTD.          Two Galleria Tower
                                     13455 Noel Road, Ste. 1925
By: CapRock Systems, Inc.,           Dallas, Texas 75240-6638
     General Partner


     By: /s/ Jere W. Thompson, Jr.
        --------------------------
          Jere W. Thompson, Jr.
                    President


<PAGE>

                                PROMISSORY NOTE


$10,000,000                      Dallas, Texas                     July 1, 1996


     FOR VALUE RECEIVED, the undersigned, CAPROCK FIBER NETWORK, LTD., a 
Texas limited partnership (herein called "Borrower"), hereby promises to pay 
to the order of BANK ONE, TEXAS, NATIONAL ASSOCIATION, a national banking 
association (herein called "Bank"), the principal sum of Ten Million Dollars 
($10,000,000) or, if less, the aggregate unpaid principal amount of the Loan 
made under this Note by Bank to Borrower pursuant to the terms of the Loan 
Agreement (as hereinafter defined), together with interest on the unpaid 
principal balance thereof as hereinafter set forth, both principal and 
interest payable as herein provided in lawful money of the United States of 
America at the offices of Bank, 1717 Main Street, Dallas, Texas or at such 
other place within Dallas County, Texas, as from time to time may be 
designated by the holder of this Note.

     This Note (a) is issued and delivered under that certain Loan Agreement 
of even date herewith between Borrower and Bank (herein, as from time to time 
supplemented, amended or restated, called the "Loan Agreement"), and is the 
Note as defined therein, and (b) is subject to the terms and provisions of 
the Loan Agreement, which contains provisions for payments and prepayments 
hereunder and acceleration of the maturity hereof upon the happening of 
certain stated events. Payments on this Note shall be made and applied as 
provided herein and in the Loan Agreement.  Reference is hereby made to the 
Loan Agreement for a description of certain rights, limitations of rights, 
obligations and duties of the parties hereto and for the meanings assigned to 
terms used and not defined herein.

     For the purposes of this Note, the following terms have the meanings
assigned to them below:

          "Base Rate" means, at any time, the sum of (x) the Base Rate Margin
     plus (y) the floating annual interest rate established by Bank at that time
     as its base-rate of interest, which may not be the lowest interest rate
     charged by Bank on loans similar to that evidenced by this Note. The Base
     Rate shall in no event, however, exceed the Highest Lawful Rate. The Base
     Rate Margin means (a) zero, so long as no Event of Default has occurred and
     is continuing, and (b) two percent (2%) upon the occurrence and during the
     continuation of an Event of Default under Section 13(a) of the Loan
     Agreement.  With respect to interest accruing pursuant to clause (b) of the
     immediately preceding sentence, the interest itself will not bear interest
     if not paid when due.

          "Base Rate Payment Date" means (i) the last day of each calendar
     month, beginning July 31, 1996, and (ii) any day on which past due interest
     or principal is owed hereunder and is unpaid.  If the terms hereof or of 
     the Loan Agreement provide that payments of interest or principal hereon 
     shall be deferred from one Base Rate Payment Date to another day, such 
     other day shall also be a Base Rate Payment Date.

          "Base Rate Portion" means any portion of the Loan not designated as a
     Fixed Rate Portion.


<PAGE>

          "Business Day" means (a) for purposes of the Fixed Rate, a day when
     commercial banks are open for international business in London, England,
     and (b) otherwise, any day other than Saturday and Sunday, on which
     commercial banks are open for business with the public in Dallas, Texas.

          "Fixed Rate" means, for any Fixed Rate Portion and for the relevant
     Interest Period, an annual interest rate (rounded upward, if necessary, to
     the nearest 0.01%) equal to the sum of (a) the Fixed Rate Margin plus (b)
     the quotient obtained by dividing (i) the rate that deposits in United
     States dollars are offered to Bank in the London interbank market, at
     approximately 11:00 a.m. London time two Business Days before the first
     day of the applicable Interest Period, in an amount comparable to that
     portion of the principal of this Note and having a maturity approximately
     equal to the applicable Interest Period, by (ii) one minus the maximum
     aggregate reserve requirements (including all basic, supplemental,
     emergency, special, marginal, and other reserves required by applicable
     law) applicable to a member bank of the Federal Reserve System for
     eurocurrency fundings or liabilities in respect of the relevant Interest
     Period. The Fixed Rate determined by Bank with respect to a particular
     Fixed Rate Portion shall be fixed at such rate for the duration of the
     associated Interest Period. The Fixed Rate Margin means (a) two and one-
     half percent (2.5%) so long as no Event of Default has occurred and is
     continuing, and (b) four and one-half percent (4.5%) upon the occurrence
     and during the continuation of an Event of Default under Section 13(a) of
     the Loan Agreement.  With respect to interest accruing pursuant to clause 
     (b) of the immediately preceding sentence, the interest itself will not 
     bear interest if not paid when due.

          "Fixed Rate Payment Date" means, with respect to any Fixed Rate
     Portion: (i) the day on which the related Interest Period ends, and (ii)
     any day on which past due interest or past due principal is owed hereunder
     with respect to such Fixed Rate Portion and is unpaid. If the terms hereof
     or of the Loan Agreement provide that payments of interest or principal
     with respect to such Fixed Rate Portion shall be deferred from one Fixed
     Rate Payment Date to another day, such other day shall also be a Fixed Rate
     Payment Date.

          "Fixed Rate Portion" means any portion of the unpaid principal balance
     of this Note which Borrower designates as such in a Rate Election.

          "Funding Loss" means any loss or expense that Bank incurs because (a)
     Borrower fails or refuses (for any reason whatsoever other than a default
     on the part of Bank) to take any advance that it has requested under this
     Note or (b) Borrower pays or is deemed to have converted to the Base Rate
     any portion of the principal of this Note before the last day of the
     applicable Interest Period.

          "Highest Lawful Rate" means the maximum nonusurious rate of interest
     that Bank is permitted under applicable law to contract for, take, charge
     or receive with respect to the loan.

          "Interest Period" means, at Borrower's option, one, two or three
     months, so long as (a) the initial Interest Period for any portion of
     principal commences on the date it is advanced, and each subsequent
     applicable Interest Period commences on the day when the next preceding
     applicable Interest Period expires, (b) if any Interest Period begins on a
     day for which no numerically corresponding Business Day in the calendar
     month at the end of the 


                                       -2-
<PAGE>

     Interest Period exists, then the Interest Period ends on the last Business
     Day of that calendar month, and (c) no Interest Period may extend beyond 
     the scheduled repayment date for the applicable portion of principaL

          "Quarterly Payment Date" means March 31, June 30, September 30 and
     December 31 of each year.

          "Rate Election" means each election by Borrower of a Fixed Rate
     Portion made in the form of a Rate Election attached as Exhibit 1 hereto,
     duly completed, and received by Bank not later than 10:00 a.m. Dallas,
     Texas time, two Business Days before the first day of the specified
     Interest Period.

     Pursuant to a Rate Election, Borrower may from time to time designate 
all or any portion of the loan as a Fixed Rate Portion; provided that without 
the consent of Bank Borrower may make no such election during the continuance 
of an Event of Default and that Borrower may make such an election with 
respect to an already existing Fixed Rate Portion only if such election will 
take effect at or after the termination of the Interest Period applicable to 
such already existing Fixed Rate Portion. Each Rate Election shall be 
irrevocable Borrower may make no Rate Election which does not specify an 
Interest Period complying with the definition of "Interest Period".  Upon the 
termination of each Interest Period the portion of the Loan theretofore 
constituting the related Fixed Rate Portion shall, unless the subject of a 
new Rate Election then taking effect, automatically become a part of the Base 
Rate Portion and become subject to all provisions of the Loan Documents 
governing the Base Rate Portion.

     On each Quarterly Payment Date beginning December 31, 1996 and continuing
regularly thereafter, Borrower will make a mandatory payment of principal on the
Loan in addition to the payment of the interest then due. This mandatory payment
shall be equal to a percentage of the principal amount of the loan outstanding
at December 31, 1996; the following table sets out such percentage for the
Quarterly Payment Date for each calendar quarter in each of the following years:
<TABLE>
          QUARTERLY 
        PAYMENT DATE     1ST       2ND       3RD       4TH
        ------------     ---       ---       ---       ---
        <S>              <C>       <C>       <C>       <C>

           1996                                        0.5%

           1997          1.0%      2.0%      2.0%      2.0%

           1998          2.0%      2.0%      2.5%      2.5%

           1999          2.5%      2.5%      2.5%      3.0%

           2000          3.0%      3.0%      3.0%      3.5%

           2001          3.5%      3.5%      3.5%      remaining principal and
                                                       accrued interest due and
                                                       payable in full
</TABLE>
                                       -3-

<PAGE>

     On the date thirty (30) days after each Quarterly Payment Date at or 
after March 31, 1997, Borrower shall, in addition to the interest and 
principal payments then otherwise required under this Note, make an 
additional mandatory payment of principal (each an "Excess Cash flow 
Payment") on the Loan in an amount equal to the excess, if any, of fifty 
percent (50%) of Excess Cash Flow. The term "Excess Cash Flow" means the 
remainder of (x) the sum of the net income after Tax Distributions (as 
defined in the Loan Agreement) of Borrower for the three month period ending 
on such Quarterly Payment Date plus depreciation, amortization and other 
non-cash expenses of Borrower for such period MINUS (y) the required 
principal payment on such Quarterly Payment Date pursuant to the table set 
forth above and MINUS (z) capital expenditures incurred during such period. 
Any Excess Cash Flow Payment made shall be applied to the principal payments 
thereafter required pursuant to the table set forth above in the inverse 
order of their maturity.

     Borrower shall, promptly upon receipt, pay all amounts received by Borrower
as consideration for the construction of the Network (including without
limitation any such payments by Southwestern Bell Communications) as a mandatory
principal prepayment of the loan. Any such payment shall be applied to the
principal payments thereafter required pursuant to the table set forth above in
the inverse order of their maturity.

     Borrower may from time to time and without premium or penalty prepay all or
any part of this Note, so long as Borrower does not prepay any Fixed Rate
Portion. Each prepayment of principal shall be accompanied by all interest then
accrued and unpaid on the principal so prepaid. If any payment of principal of
or interest on this Note becomes due on a day that is not a Business Day, then
that payment shall be made on the next succeeding Business Day (and, any such
extension of time shall be included in computing interest in connection with
that payment) unless the payment involves the Fixed Rate, in which event it must
be made on the next preceding Business Day. Bank's books and records are prima
facie evidence of all outstanding principal of and accrued and unpaid interest
on this Note.

     The Base Rate Portion of the Loan (exclusive of any past due principal 
or interest) from time to time outstanding shall bear interest on each day 
outstanding at the Base Rate in effect on such day. On each Base Rate Payment 
Date Borrower shall pay to the holder hereof all unpaid interest which has 
accrued on the Base Rate Portion to but not including such Base Rate Payment 
Date. Each Fixed Rate Portion of the Loan (exclusive of any past due 
principal or interest) shall bear interest on each day during the related 
Interest Period at the related Fixed Rate in effect on such day. Interest 
shall be calculated on the basis of actual days elapsed but computed as if 
each year consisted of 360 days. Each change in the rate becomes effective 
without notice to Borrower on the effective date of each change in the 
applicable Fixed Rate. On each Fixed Rate Payment Date relating to a Fixed 
Rate Portion Borrower shall pay to the holder hereof all unpaid interest 
which has accrued on such Fixed Rate Portion to but not including such Fixed 
Rate Payment Date. Notwithstanding the foregoing provisions of this 
paragraph: (a) this Note shall never bear interest in excess of the Highest 
Lawful Rate, and (b) if at any time the rate at which interest is payable on 
this Note is limited by the Highest Lawful Rate (by the foregoing clause (a) 
or by reference to the Highest Lawful Rate in the definitions of Base Rate, 
Fixed Rate, and Default Rate), this Note shall bear interest at the Highest 
Lawful Rate and shall continue to bear interest at the Highest Lawful Rate 
until such time as the total amount of interest accrued hereon equals (but 
does not exceed) the total amount of interest which would have accrued hereon 
had there been no Highest Lawful Rate applicable hereto.

                                       -4-

<PAGE>

     If any law, rule, regulation, ordinance, or requirement of any central 
bank, court, or governmental authority (whether or not having the force of 
law), any change in Bank's written policy as a result of any of the 
foregoing, or any change in the risk category of the transaction related to 
this Note by or at the direction of any regulatory authority ever results in 
a reduction in the rate of return on Bank's capital as a consequence of its 
obligations under the Loan Documents to a level below that which Bank could 
have otherwise achieved, then, within ten days after notice from time to time 
from Bank, Borrower shall pay to Bank the additional amount as will 
compensate Bank for that reduction.  In determining the amount due under this 
provision, Bank may employ such assumptions and allocations as it shall deem 
reasonable and may use any reasonable averaging and attribution method.

     This Note and all of the other Loan Documents are intended to be 
performed in accordance with, and only to the extent permitted by, all 
applicable usury laws. If any provision hereof or of any of the other Loan 
Documents or the application thereof to any person or circumstance shall, for 
any reason and to any extent, be invalid or unenforceable, neither the 
application of such provision to any other person or circumstance nor the 
remainder of the instrument in which such provision is contained shall be 
affected thereby and shall be enforced to the greatest extent permitted by 
law. It is expressly stipulated and agreed to be the intent of the holder 
hereof to at all times comply with the usury and other applicable laws now or 
hereafter governing the interest payable on the indebtedness evidenced by 
this Note. If the applicable law is ever revised, repealed or judicially 
interpreted so as to render usurious any amount called for under this Note or 
under any of the other Loan Documents, or contracted for, charged, taken, 
reserved or received with respect to the indebtedness evidenced by this Note, 
or if Bank's exercise of the option to accelerate the maturity of this Note, 
or if any prepayment by Borrower results in Borrower having paid any interest 
in excess of that permitted by law then it is the express intent of Borrower 
and Bank that all excess amounts theretofore collected by Bank be credited on 
the principal balance of this Note (or, if this Note and all other 
indebtedness arising under or pursuant to the other Loan Documents have been 
paid in full, refunded to Borrower), and the provisions of this Note and the 
other loan Documents immediately be deemed reformed and the amounts 
thereafter collectable hereunder and thereunder reduced, without the 
necessity of the execution of any new document, so as to comply with the then 
applicable law, but so as to permit the recovery of the fullest amount 
otherwise called for hereunder or thereunder. All sums paid, or agreed to be 
paid, by Borrower for the use, forbearance, detention, taking, charging, 
receiving or reserving of the indebtedness of Borrower to Bank under this 
Note or arising under or pursuant to the other Loan Documents shall, to the 
maximum extent permitted by applicable law, be amortized, prorated, allocated 
and spread throughout the full term of such indebtedness until payment in 
full so that the rate or amount of interest on account of such indebtedness 
does not exceed the usury ceiling from time to time in effect and applicable 
to such indebtedness for so long as such indebtedness is outstanding. To the 
extent federal law permits Bank to contract for, charge or receive a greater 
amount of interest, Bank will rely on federal law instead of TEX. REV. CIV. 
STAT. ANN. ART. 5069-1.04, as amended, for the purpose of determining the 
Highest Lawful Rate. Additionally, to the maximum extent permitted by 
applicable law now or hereafter in effect, Bank may, at its option and from 
time to time, implement any other method of computing the Highest Lawful Rate 
under such ARTICLE 5069-1.04; as amended, or under other applicable law by 
giving notice, if required, to Borrower as provided by applicable law now or 
hereafter in effect.  Notwithstanding anything to the contrary contained 
herein or in any of the other loan Documents, it is not the intention of Bank 
to accelerate the maturity of any interest that has not accrued at the time 
of such acceleration or to collect unearned interest at the time of such 
acceleration or to collect unearned interest at the time of such acceleration.

                                       -5-

<PAGE>

     In no event shall TEX. REV. CIV. STAT. ANN. ART 5069 Ch. 15 (which 
regulates certain revolving loan accounts and revolving tri-party accounts) 
apply to this Note. To the extent that TEX. REV. CIV. STAT. ANN. ART 
5069-1.04, as amended, is applicable to this Note, the "indicated rate 
ceiling" specified in such article is the applicable ceiling; PROVIDED THAT, 
if federal law permits greater interest, the law permitting the greatest 
interest shall apply.

     With respect to any principal bearing interest at the Fixed Rate (a) if 
any present or future law imposes, modifies, or deems applicable (or if 
compliance by Bank with any requirement of any governmental authority or 
central bank results in) any requirement that any reserves (including, 
without limitation, any marginal, emergency, supplemental, or special 
reserves but not including any reserves already taken into account in the 
calculation of the Fixed Rate) be maintained, and if (b) those reserves 
reduce any sums receivable by Bank under the Loan Documents or increase the 
costs incurred by Bank in advancing or maintaining any portion of principal 
bearing interest at the Fixed Rate, and (c) Bank determines that the 
reduction or increase is material (and it may, in determining the material 
nature of the reduction or increase, utilize reasonable assumptions and 
allocations of costs and expenses and use any reasonable averaging or 
attribution method), then (d) Bank shall deliver to Borrower a certificate 
setting forth in reasonable detail the calculation of the amount necessary to 
compensate it for its reduction or increase (which certificate is conclusive 
and binding absent manifest error), and (e) Borrower shall pay that amount to 
Bank within ten days after demand. The provisions of and undertakings and 
indemnification set forth in this paragraph survive the satisfaction and 
payment of the Loan and termination of the Loan Documents.

     If any law makes it unlawful for Bank to advance or maintain principal 
under this Note bearing interest at the Fixed Rate, then Bank shall promptly 
notify Borrower, and (a) if maintaining that principal until the last day of 
the applicable Interest Period is unlawful, then it shall be converted to 
interest at the Base Rate as of the date of notice, and Borrower shall pay to 
the holder any related Funding Loss, or (b) if not prohibited by law, that 
principal shall be converted to interest at the Base Rate as of the last day 
of the applicable Interest Period, or (c) if any conversion will not resolve 
the unlawfulness, Borrower shall promptly prepay that principal without 
penalty, TOGETHER WITH any related Funding Loss. No notice of conversion is 
required to be delivered in connection with any conversion under this 
paragraph.

     Borrower agrees to indemnify Bank against and pay to it upon demand, any 
Funding Loss it may incur. When Bank demands that Borrower pay any Funding 
Loss, it shall deliver to Borrower a certificate setting forth in reasonable 
detail the basis for imposing Funding Loss and the calculation of the amount, 
which calculation shall be in accordance with common business practices and 
which shall be conclusive and binding absent manifest error. The provisions 
of and undertakings and indemnification set forth in this paragraph survive 
the satisfaction and payment of the Loan and termination of the Loan 
Documents.

     If this Note is placed in the hands of an attorney for collection after 
default, or if all or any part of the indebtedness represented hereby is 
proved, established or collected in any court or in any bankruptcy, 
receivership, debtor relief, probate or other court proceedings, Borrower and 
all endorsers, sureties and guarantors of this Note jointly and severally 
agree to pay reasonable attorneys' fees and collection costs to the holder 
hereof in addition to the principal and interest payable hereunder.

     Borrower and all endorsers, sureties and guarantors of this Note hereby 
severally waive demand, presentment, notice of demand and of dishonor and 
nonpayment of this Note, protest, 

                                       -6-

<PAGE>

notice of protest, notice of intention to accelerate the maturity of this 
Note, declaration or notice of acceleration of the maturity of this Note, 
diligence in collecting, the bringing of any suit against any party and any 
notice of or defense on account of any extensions, renewals, partial payments 
or changes in any manner of or in this Note or in any of its terms, 
provisions and covenants, or any releases or substitutions of any security, 
or any delay, indulgence or other act of any trustee or any holder hereof, 
whether before or after maturity.

     THIS NOTE AND THE RIGHTS AND DUTIES OF THE PARTIES HERETO SHALL BE 
GOVERNED BY THE LAWS OF THE STATE OF TEXAS (WITHOUT REGARD TO PRINCIPLES OF 
CONFLICTS OF LAW) EXCEPT TO THE EXTENT THE SAME ARE GOVERNED BY APPLICABLE 
FEDERAL LAW.

                [The remainder of this page intentionally left blank]

                                       -7-

<PAGE>

                              CAPROCK FIBER NETWORK, LTD.


                              By:  CapRock Systems, Inc., its General Partner




                                   By: /s/ Jere W. Thompson, Jr.
                                      --------------------------------------
                                      Jere W. Thompson, Jr.
                                      President





























                                       -8-


<PAGE>

                                                                      EXHIBIT 1


                                    RATE ELECTION


     Reference is made to that certain Loan Agreement dated as of July 1, 1996
(as from time to time amended, the "Agreement"), by and between CAPROCK FIBER
NETWORK, LTD. ("Borrower") and BANK ONE, TEXAS, N.A. ("Bank"). Terms which are
defined in the Agreement or in the Note and which are used but not defined
herein are used herein with the meanings given them in the Agreement or the
Note.  Pursuant to the terms of the Agreement and the Note Borrower hereby
elects a Fixed Rate Portion in the amount of $ _________with an Interest Period
beginning on ________________ and continuing for a period of ________________

     To meet the conditions set out in the Note and the Agreement for the making
of such election, Borrower hereby represents, warrants, acknowledges and agrees
that:

          (a)  The representative of General Partner signing this instrument has
     all necessary authority to act for Borrower in making the election herein
     contained.

          (b)  There does not exist on the date hereof any condition or event
     which constitutes an Event of Default which has not been waived by Bank in
     writing.

          (c)  The Loan Documents have not been modified, amended or
     supplemented by any unwritten representations or promises or by any course
     of dealing. The Agreement and the other Loan Documents are hereby ratified,
     approved, and confirmed in all respects.

     The representative of General Partner signing this instrument hereby
certifies that, to the best of his knowledge after due inquiry, the above
representations, warranties, acknowledgements, and agreements of Borrower are
true, correct and complete.

                [The remainder of this page intentionally left blank]



<PAGE>


IN WITNESS WHEREOF this instrument is executed as of July 1, 1996.




                              CAPROCK FIBER NETWORK, LTD.


                              By:  CapRock Systems, Inc., its General Partner



                                   By:
                                      --------------------------------
                                      Jere W. Thompson, Jr.
                                      President



<PAGE>

                                                                     [EXECUTION]

                                  GUARANTY

     THIS GUARANTY is made as of July 1, 1996, by CapRock Systems, Inc., a Texas
corporation ("Guarantor"), in favor of Bank One, Texas, National Association
("Lender").

                                  RECITALS:

     1.   CapRock Fiber Network, Ltd., a Texas limited partnership ("Borrower")
has executed in favor of Lender that certain promissory note of even date
herewith, payable to the order of Lender in the principal amount of $10,000,000
(such promissory note, as from time to time amended, and all promissory notes
given in substitution, renewal or extension therefor or thereof, in whole or in
part, being herein collectively called the "Note").

     2.   The Note was executed pursuant to a Loan Agreement of even date
herewith, (herein, as from time to time amended, supplemented or restated,
called the "Loan Agreement"), by and between Borrower and Lender, pursuant to
which Lender has agreed to advance funds to Borrower under the Note.

     3.   It is a condition precedent to Lender's obligation to advance funds
pursuant to the Loan Agreement that Guarantor shall execute and deliver to
Lender a satisfactory guaranty of Borrower's obligations under the Note and the
Loan Agreement.

     4.   Guarantor owns directly, or indirectly through one or more
subsidiaries, a one percent (1%) general partnership interest in Borrower.

     NOW, THEREFORE, in consideration of the premises, of the benefits which
will inure to Guarantor from Lender's advances of funds to Borrower under the
Loan Agreement, and of Ten Dollars and other good and valuable consideration,
the receipt and sufficiency of all of which are hereby acknowledged, and in
order to induce Lender to advance funds under the Loan Agreement, Guarantor
hereby agrees with Lender as follows:

                                  AGREEMENTS

     Section 1.  DEFINITIONS.  Reference is hereby made to the Loan Agreement 
for all purposes.  All terms used in this Guaranty which are defined in the 
Loan Agreement and not otherwise defined herein shall have the same meanings 
when used herein.  All references herein to any Obligation Document, Loan 
Document, or other document or instrument refer to the same as from time to 
time amended, supplemented or restated.  As used herein the following terms 
shall have the following meanings:

<PAGE>

     "OBLIGATIONS" means collectively all of the indebtedness, obligations, and
undertakings which are guaranteed by Guarantor and described in subsections (a)
and (b) of Section 2.

     "OBLIGATION DOCUMENTS" means this Guaranty, the Note, the Loan Agreement,
the Loan Documents, all other documents and instruments under, by reason of
which, or pursuant to which any or all of the Obligations are evidenced,
governed, secured, or otherwise dealt with, and all other documents,
instruments, agreements, certificates, legal opinions and other writings
heretofore or hereafter delivered in connection herewith or therewith.

     "OBLIGORS" means Borrower, Guarantor and any other endorsers, guarantors or
obligors, primary or secondary, of any or all of the Obligations.

     "SECURITY" means any rights, properties, or interests of Lender, under the
Obligation Documents or otherwise, which provide recourse or other benefits to
Lender in connection with the Obligations or the non-payment or non-performance
thereof, including collateral (whether real or personal, tangible or intangible)
in which Lender has rights under or pursuant to any Obligation Documents,
guaranties of the payment or performance of any Obligation, bonds, surety
agreements, keep-well agreements, letters of credit, rights of subrogation,
rights of offset; and rights pursuant to which other claims are subordinated to
the Obligations.

     Section 2.  GUARANTY.

     (a) Guarantor hereby irrevocably, absolutely, and unconditionally
guarantees to Lender the prompt, complete, and full payment when due, and no
matter how the same shall become due, of:

          (i)    the Note, including all principal, all interest thereon and all
     other sums payable thereunder; and

          (ii)   all other sums payable under the other Obligation Documents,
     whether for principal, interest, fees or otherwise; and

          (iii)  any and all other indebtedness or liabilities which Borrower
     may at any time owe to Lender, whether incurred heretofore or hereafter or
     concurrently herewith, voluntarily or involuntarily, whether owed alone or
     with others, whether fixed, contingent, absolute, inchoate, liquidated or
     unliquidated, whether such indebtedness or liability arises by notes,
     discounts, overdrafts, open account indebtedness or in any other manner
     whatsoever, and including interest, attorneys' fees and collection costs as
     may be provided by law or in any instrument evidencing any such
     indebtedness or liability.

                                     2
<PAGE>

Without limiting the generality of the foregoing, Guarantor hereby agrees that
its liability hereunder shall extend to and include all post-petition interest,
expenses, and other duties and liabilities of Borrower described above in this
subsection (a), or below in the following subsection (b), which would be owed by
Borrower but for the fact that they are unenforceable or not allowable due to
the existence of a bankruptcy, reorganization, or similar proceeding involving
Borrower.

     (b)  Guarantor hereby irrevocably, absolutely, and unconditionally
guarantees to Lender the prompt, complete and full performance, when due, and no
matter how the same shall become due, of all obligations and undertakings of
Borrower to Lender under, by reason of, or pursuant to any of the Obligation
Documents.

     (c)  If Borrower shall for any reason fail to pay any Obligation, as and
when such Obligation shall become due and payable, whether at its stated
maturity, as a result of the exercise of any power to accelerate, or otherwise,
Guarantor will, forthwith upon demand by Lender, pay such Obligation in full to
Lender.  If Borrower shall for any reason fail to perform promptly any
Obligation, Guarantor will, forthwith upon-demand by Lender, cause such
Obligation to be performed or, if specified by Lender, provide sufficient funds,
in such amount and manner as Lender shall in good faith determine, for the
prompt, full and faithful performance of such Obligation by Lender or such other
Person as Lender shall designate.

     (d)  If either Borrower or Guarantor fails to pay or perform any Obligation
as described in the immediately preceding subsections (a), (b), or (c) Guarantor
will incur the additional obligation to pay to Lender, and Guarantor will
forthwith upon demand by Lender pay to Lender, the amount of any and all
expenses, including fees and disbursements of Lender's counsel and of any
experts or agents retained by Lender, which Lender may incur as a result of such
failure.

     (e)  As between Guarantor and Lender, this Guaranty shall be considered a
primary and liquidated liability of Guarantor.

     Section 3.  UNCONDITIONAL GUARANTY.

     (a)  No action which Lender may take or omit to take in connection with any
of the Obligation Documents, any of the Obligations (or any other indebtedness
owing by Borrower to Lender), or any Security, and no course of dealing of
Lender with any Obligor or any other Person, shall release or diminish
Guarantor's obligations, liabilities, agreements or duties hereunder, affect
this Guaranty in any way, or afford Guarantor any recourse against Lender,
regardless of whether any such action or inaction may increase any risks to or
liabilities of Lender or any Obligor or increase any risk to or diminish any
safeguard of any Security.  Without limiting the foregoing, Guarantor hereby
expressly agrees that Lender may, from time to

                                     3
<PAGE>

time, without notice to or the consent of Guarantor, do any or all of the
following:

          (i)    Amend, change or modify, in whole or in part, any one or more
     of the Obligation Documents and give or refuse to give any waivers or other
     indulgences with respect thereto.

          (ii)   Neglect, delay, fail, or refuse to take or prosecute any action
     for the collection or enforcement of any of the Obligations, to foreclose
     or take or prosecute any action in connection with any Security or
     Obligation Document, to bring suit against any Obligor or any other Person,
     or to take any other action concerning the Obligations or the Obligation
     Documents.

          (iii)  Accelerate, change, rearrange, extend, or renew the time, rate,
     terms, or manner for payment or performance of any one or more of the
     Obligations (whether for principal, interest, fees, expenses,
     indemnifications, affirmative or negative covenants, or otherwise).

          (iv)   Compromise or settle any unpaid or unperformed Obligation or
     any other obligation or amount due or owing, or claimed to be due or owing,
     under any one or more of the Obligation Documents.

          (v)    Take, exchange, amend, eliminate, surrender, release, or
     subordinate any or all Security for any or all of the Obligations, accept
     additional or substituted Security therefor, and perfect or fail to perfect
     Lender's rights in any or all Security.

          (vi)   Discharge, release, substitute or add Obligors.

          (vii)  Apply all monies received from Obligors or others, or from any
     Security for any of the Obligations, as Lender may determine to be in its
     best interest, without in any way being required to marshall Security or
     assets or to apply all or any part of such monies upon any particular
     Obligations.

     (b)  No action or inaction of any Obligor or any other Person, and no
change of law or circumstances, shall release or diminish Guarantor's
obligations, liabilities, agreements, or duties hereunder, affect this Guaranty
in any way, or afford Guarantor any recourse against Lender.  Without limiting
the foregoing, the obligations, liabilities, agreements, and duties of Guarantor
under this Guaranty shall not be released, diminished, impaired, reduced, or
affected by the occurrence of any or all of the following from time to time,
even if occurring without notice to or without the consent of Guarantor:

          (i)    Any voluntary or involuntary liquidation, dissolution, sale of
     all or substantially all assets,

                                     4
<PAGE>

     marshalling of assets or liabilities, receivership, conservatorship,
     assignment for the benefit of creditors, insolvency, bankruptcy,
     reorganization, arrangement, or composition of any Obligor or any other
     proceedings involving any Obligor or any of the assets of any Obligor
     under laws for the protection of debtors, or any discharge, impairment,
     modification, release, or limitation of the liability of, or stay of
     actions or lien enforcement proceedings against, any Obligor, any
     properties of any Obligor, or the estate in bankruptcy of any Obligor in
     the course of or resulting from any such proceedings.

          (ii)   The failure by Lender to file or enforce a claim in any
     proceeding described in the immediately preceding subsection (i) or to take
     any other action in any proceeding to which any Obligor is a party.

          (iii)  The release by operation of law of any Obligor from any of the
     Obligations or any other obligations to Lender.

          (iv)   The invalidity, deficiency, illegality, or unenforceability of
     any of the Obligations or the Obligation Documents, in whole or in part,
     any bar by any statute of limitations or other law of recovery on any of
     the Obligations, or any defense or excuse for failure to perform on account
     of force majeure, act of God, casualty, impossibility, impracticability, or
     other defense or excuse whatsoever.

          (v)    The failure of any Obligor or any other Person to sign any
     guaranty or other instrument or agreement within the contemplation of any
     Obligor or Lender.

          (vi)   The fact that Guarantor may have incurred directly part of the
     Obligations or is otherwise primarily liable therefor.

          (vii)  Without limiting any of the foregoing, any fact or event
     (whether or not similar to any of the foregoing) which in the absence of
     this provision would or might constitute or afford a legal or equitable
     discharge or release of or defense to a guarantor or surety other than the
     actual payment and performance by Guarantor under this Guaranty.

     (c)  Lender may invoke the benefits of this Guaranty before pursuing any
remedies against any Obligor or any other Person and before proceeding against
any Security now or hereafter existing for the payment or performance of any of
the Obligations.  Lender may maintain an action against Guarantor on this
Guaranty without joining any other Obligor therein and without bringing a
separate action against any other Obligor.

                                     5
<PAGE>

     (d)  If any payment to Lender by any Obligor is held to constitute a
preference or a voidable transfer under applicable state or federal laws, or if
for any other reason Lender is required to refund such payment to the payor
thereof or to pay the amount thereof to any other Person, such payment to Lender
shall not constitute a release of Guarantor from any liability hereunder, and
Guarantor agrees to pay such amount to Lender on demand and agrees and
acknowledges that this Guaranty shall continue to be effective or shall be
reinstated, as the case may be, to the extent of any such payment or payments.
Any transfer by subrogation which is made as contemplated in Section 6 prior to
any such payment or payments shall (regardless of the terms of such transfer) be
automatically voided upon the making of any such payment or payments, and all
rights so transferred shall thereupon revert to and be vested in Lender.

     (e)  This is a continuing guaranty and shall apply to and cover all
Obligations and renewals and extensions thereof and substitutions therefor from
time to time.

     Section 4.  WAIVER.  Guarantor hereby waives, with respect to the
Obligations, this Guaranty, and the other Obligation Documents:

     (a)  notice of the incurrence of any Obligation by Borrower, and notice of
any kind concerning the assets, liabilities, financial condition,
creditworthiness, businesses, prospects, or other affairs of Borrower (it being
understood and agreed that: (i) Guarantor shall take full responsibility for
informing itself of such matters, (ii) Lender shall have no responsibility of
any kind to inform Guarantor of such matters, and (iii) Lender is hereby
authorized to assume that Guarantor, by virtue of its relationships with
Borrower which are independent of this Guaranty, has full and complete knowledge
of such matters at each time when Lender extends credit to Borrower or takes any
other action which may change or increase Guarantor's liabilities or losses
hereunder).

     (b)  notice that Lender, any Obligor, or any other Person has taken or
omitted to take any action under any Obligation Document or any other agreement
or instrument relating thereto or relating to any Obligation.

     (c)  notice of acceptance of this Guaranty and all rights of Guarantor
under Section 34.02 of the Texas Business and Commerce Code.

     (d)  demand, presentment for payment, and notice of demand, dishonor,
nonpayment, or nonperformance.

     (e)  notice of intention to accelerate, notice of acceleration, protest,
notice of protest, notice of any exercise of remedies (as described in the
following Section 5 or otherwise), and all other notices of any kind whatsoever.

                                     6
<PAGE>

     Section 5.  EXERCISE OF REMEDIES.  Lender shall have the right to enforce,
from time to time, in any order and at Lender's sole discretion, any rights,
powers and remedies which Lender may have under the Obligation Documents or
otherwise, including judicial foreclosure, the exercise of rights of power of
sale, the taking of a deed or assignment in lieu of foreclosure, the appointment
of a receiver to collect rents, issues and profits, the exercise of remedies
against personal property, or the enforcement of any assignment of leases,
rentals, oil or gas production, or other properties or rights, whether real or
personal, tangible or intangible; and Guarantor shall be liable to Lender
hereunder for any deficiency resulting from the exercise by Lender of any such
right or remedy even though any rights which Guarantor may have against Borrower
or others may be destroyed or diminished by exercise of any such right or
remedy. No failure on the part of Lender to exercise, and no delay in
exercising, any right hereunder or under any other Obligation Document shall
operate as a waiver thereof; nor shall any single or partial exercise of any
right preclude any other or further exercise thereof or the exercise of any
other right.  The rights, powers and remedies of Lender provided herein and in
the other Obligation Documents are cumulative and are in addition to, and not
exclusive of, any other rights, powers or remedies provided by law or in equity.
The rights of Lender hereunder are not conditional or contingent on any attempt
by Lender to exercise any of its rights under any other Obligation Document
against any Obligor or any other Person.

     Section 6.  LIMITED SUBROGATION.  Until all of the Obligations have been
paid and performed in full Guarantor shall have no right to exercise any right
of subrogation, reimbursement, indemnity, exoneration, contribution or any other
claim which it may now or hereafter have against or to any Obligor or any
Security in connection with this Guaranty (including any right of subrogation
under Section 34.04 of the Texas Business and Commerce Code), and Guarantor
hereby defers any rights to enforce any remedy which Guarantor may have against
Borrower and any right to participate in any Security until such time.  The
foregoing shall not be deemed to prohibit real locations of partnership
interests among the partners of Borrower in accordance with the terms of the
limited partnership agreement of Borrower.  If any amount shall be paid to
Guarantor on account of any such subrogation or other rights, any such other
remedy, or any Security at any time when all of the Obligations and all other
expenses guaranteed pursuant hereto shall not have been paid in full, such
amount shall be held in trust for the benefit of Lender, shall be segregated
from the other funds of Guarantor and shall forthwith be paid over to Lender to
be held by Lender as collateral for, or then or at any time thereafter applied
in whole or in part by Lender against, all or any portion of the Obligations,
whether matured or unmatured, in such order as Lender shall elect.  If Guarantor
shall make payment to Lender of all or any portion of the Obligations and if
all of the Obligations shall be finally paid in full, Lender will, at
Guarantor's request and expense, execute

                                     7
<PAGE>

and deliver to Guarantor (without recourse, representation or warranty)
appropriate documents necessary to evidence the transfer by subrogation to
Guarantor of an interest in the Obligations resulting from such payment by
Guarantor; provided that such transfer shall be subject to Section 3(d) above
and that without the consent of Lender (which Lender may withhold in its
discretion) Guarantor shall not have the right to be subrogated to any claim
or right against any Obligor which has become owned by Lender.

     Section 7.  SUCCESSORS AND ASSIGNS.  Guarantor's rights or obligations
hereunder may not be assigned or delegated, but this Guaranty and such
obligations shall pass to and be fully binding upon the successors of Guarantor,
as well as Guarantor.  This Guaranty shall apply to and inure to the benefit of
Lender and its successors or assigns.  Without limiting the generality of the
immediately preceding sentence, Lender, subject to the provisions of the Loan
Agreement, may assign, grant a participation in, or otherwise transfer any
Obligation held by it  or any portion thereof, and Lender may assign or
otherwise transfer its rights or any portion thereof under any Obligation
Document, to any other Person, and such other Person shall thereupon become
vested with all of the benefits in respect thereof granted to Lender hereunder
unless otherwise expressly provided by Lender in connection with such assignment
or transfer.

     Section 8.  SUBORDINATION AND OFFSET.  Guarantor hereby subordinates and
makes inferior to the Obligations any and all indebtedness now or at any time
hereafter owed by Borrower to Guarantor.  Prior to the date the Obligations are
paid in cash and satisfied in full, and such payment is not subject to
rescission, Guarantor shall not accept, receive or collect (by set-off or other
manner) any payment or distribution on account of, or ask for, demand or
accelerate, directly or indirectly, any payment on such indebtedness except as
permitted under the Loan Agreement.  Guarantor agrees that after the occurrence
of any Default or Event of Default it will neither permit Borrower to repay such
indebtedness or any part thereof nor accept payment from Borrower of such
indebtedness or any part thereof without the prior written consent of Lender.
If Guarantor receives any such payment without the prior written consent of
Lender, the amount so paid shall be held in trust for the benefit of Lender,
shall be segregated from the other funds of Guarantor, and shall forthwith be
paid over to Lender to be held by Lender as collateral for, or then or at any
time thereafter applied in whole or in part by Lender against, all or any
portions of the Obligations, whether matured or unmatured, in such order as
Lender shall elect.

     Guarantor hereby grants to Lender a right of offset to secure the payment
of the Obligations and Guarantor's obligations and liabilities hereunder, which
right of offset shall be upon any and all monies, securities and other property
(and the proceeds therefrom) of Guarantor now or hereafter held or

                                     8
<PAGE>

received by or in transit to Lender from or for the account of Guarantor,
whether for safekeeping, custody, pledge, transmission, collection or
otherwise, and also upon any and all deposits (general or special), credits
and claims of Guarantor at any time existing against Lender.  Upon the
occurrence of any Default or Event of Default Lender is hereby authorized at
any time and from time to time, without notice to Guarantor, to offset,
appropriate and apply any and all items hereinabove referred to against the
Obligations and Guarantor's obligations and liabilities hereunder irrespective
of whether or not Lender shall have made any demand under this Guaranty and
although such obligations and liabilities may be contingent or unmatured.
Lender agrees promptly to notify Guarantor after any such offset and
application made by Lender, provided that the failure to give such notice
shall not affect the validity of such offset and application.  The rights of
Lender under this section are in addition to, and shall not be limited by, any
other rights and remedies (including other rights of offset) which Lender may
have.

     Section 9.  REPRESENTATIONS AND WARRANTIES.  Guarantor hereby represents
and warrants to Lender as follows:

     (a)  The Recitals at the beginning of this Guaranty are true and correct in
all respects.

     (b)  Guarantor is a corporation duly organized, validly existing and in
good standing under the laws of the state of its incorporation as set forth in
the Recitals to this Guaranty; and Guarantor has all requisite power and
authority to execute, deliver and perform this Guaranty.

     (c)  The execution, delivery and performance by Guarantor of this Guaranty
have been duly authorized by all necessary corporate action and do not and will
not contravene its certificate or articles of incorporation or bylaws.

     (d)  The execution, delivery and performance by Guarantor of this Guaranty
do not and will not contravene any law or governmental regulation or any
contractual restriction binding on or affecting Guarantor or any of its
affiliates or properties, and do not and will not result in or require the
creation of any lien, security interest or other charge or encumbrance upon or
with respect to any of its properties.

     (e)  No authorization or approval or other action by, and no notice to or
filing with, any governmental authority or other regulatory body or third party
is required for the due execution, delivery and performance by Guarantor of this
Guaranty.

     (f)  This Guaranty is a legal, valid and binding obligation of Guarantor,
enforceable against Guarantor in accordance with its terms except as limited by
bankruptcy, insolvency or similar laws of general application relating to the
enforcement of creditors' rights.

                                     9
<PAGE>

     (g)  There is no action, suit or proceeding pending or, to the knowledge of
Guarantor, threatened against or otherwise affecting Guarantor before any court,
arbitrator or governmental department, commission, board, bureau, agency or
instrumentality which may reasonably be expected to materially and adversely
affect Guarantor's financial condition or its ability to perform its obligations
hereunder.

     (h)  The direct or indirect value of the consideration received and to be
received by Guarantor in connection herewith is reasonably worth at least as
much as the liability and obligations of Guarantor hereunder, and the incurrence
of such liability and obligations in return for such consideration may
reasonably be expected to benefit Guarantor, directly or indirectly.

     (i)  Guarantor is not "insolvent" on the date hereof (that is, the sum of
Guarantor's absolute and contingent liabilities, including the Obligations, does
not exceed the fair market value of Guarantor's assets).  Guarantor's capital is
adequate for the businesses in which Guarantor is engaged and intends to be
engaged.  Guarantor has not incurred (whether hereby or otherwise), nor does
Guarantor intend to incur or believe that it will incur, debts which will be
beyond its ability to pay as such debts mature.

     (j)  All balance sheets, earning statements, financial data and other
information concerning Guarantor which have been furnished to Lender to induce
it to accept this Guaranty (or otherwise furnished to Lender in connection with
the transactions contemplated hereby or associated herewith) fairly represent
the financial condition of Guarantor as of the dates and the results of
Guarantor's operations for the periods for which the same are furnished.  None
of such balance sheets, earnings and cash flow statements, financial data and
other information contains any untrue statement of a material fact or omits to
state any material fact which is necessary to make any statements contained
therein not misleading.

     Section 10.  NO ORAL CHANGE.  No amendment of any provision of this
Guaranty shall be effective unless it is in writing and signed by Guarantor and
Lender, and no waiver of any provision of this Guaranty, and no consent to any
departure by Guarantor there from, shall be effective unless it is in writing
and signed by Lender, and then such waiver or consent shall be effective only in
the specific instance and for the specific purpose for which given.

     Section 11.  INVALIDITY OF PARTICULAR PROVISIONS.  If any term or provision
of this Guaranty shall be determined to be illegal or unenforceable all other
terms and provisions hereof shall nevertheless remain effective and shall be
enforced to the fullest extent permitted by applicable law.

                                     10
<PAGE>

     Section 12.  HEADINGS AND REFERENCES.  The headings used herein are for
purposes of convenience only and shall not be used in construing the provisions
hereof.  The words "this Guaranty," "this instrument," "herein," "hereof,"
"hereby" and words of similar import refer to this Guaranty as a whole and not
to any particular subdivision unless expressly so limited.  The phrases "this
section" and "this subsection" and similar phrases refer only to the
subdivisions hereof in which such phrases occur.  The word "or" is not
exclusive, and the word "including" (in its various forms) means "including
without limitation".  Pronouns in masculine, feminine and neuter genders shall
be construed to include any other gender, and words in the singular form shall
be construed to include the plural and vice versa, unless the context otherwise
requires.

     Section 13.  TERM.  This Guaranty shall be irrevocable until all of the
Obligations have been completely and finally paid and performed, Lender has no
obligation to make any loans or other advances to Borrower, and all obligations
and undertakings of Borrower under, by reason of, or pursuant to the Obligation
Documents have been completely performed, and this Guaranty is thereafter
subject to reinstatement as provided in Section 3(d). All extensions of credit
and financial accommodations heretofore or hereafter made by Lender to Borrower
shall be conclusively presumed to have been made in acceptance hereof and in
reliance hereon.

     Section 14.  NOTICES.  Any notice or communication required or permitted
hereunder shall be given in writing, sent by personal delivery, by telecopy, by
delivery service with proof of delivery, or by registered or certified United
States mail, postage prepaid, addressed to the appropriate party as follows:

     To Guarantor:  CapRock Systems, Inc.
                    Two Galleria Tower
                    13455 Noel Road
                    Suite 1925
                    Dallas, Texas 75240-6638
                    Attn:  Jere W. Thompson, Jr.
                    Fax No.:_______________

     To Lender:     Bank One, Texas, N.A.
                    1717 Main Street
                    Dallas, Texas 75201
                    Attn:  Gina Norris
                    Fax No.: (214) 290-2683

or to such other address or to the attention of such other individual as
hereafter shall be designated in writing by the applicable party sent in
accordance herewith.  Any such notice or communication shall be deemed to have
been given (a) in the case of personal delivery or delivery service, as of the
date of first attempted delivery at the address or in the manner provided
herein, (b) in the case of telecopy, upon receipt, or (b) in the

                                     11
<PAGE>

case of registered or certified United States mail, three days after deposit
in the mail.

     Section 15.  LIMITATION ON INTEREST.  Lender and Guarantor intend to
contract in strict compliance with applicable usury law from time to time in
effect.  Notwithstanding anything to the contrary herein or in any of the
Obligation Documents, this Guaranty shall never be construed as a contract
obligating Guarantor to pay interest in excess of the maximum amount of interest
permitted by applicable law from time to time in effect, and Guarantor shall
have no liability hereunder to pay interest in excess of such maximum amount.
Lender expressly disavows any intention to charge or collect excessive unearned
interest or finance charges in the event the maturity of any Obligation is
accelerated.  If Lender shall collect monies which are deemed to constitute
interest which would otherwise increase the amount of interest paid by Guarantor
to an amount in excess of that permitted by applicable law in effect at the
relevant times, all such sums deemed to constitute interest in excess of such
legal limit shall be immediately returned to Guarantor upon such determination.
In determining whether or not the interest paid or payable by Guarantor, under
any specific circumstance exceeds the maximum interest permitted under
applicable law, Lender and Guarantor shall, to the greatest extent permitted by
applicable law: (a) characterize any non-principal payment as an expense, fee or
premium rather than as interest, (b) exclude voluntary payments and the effects
thereof, and (c) amortize, prorate, allocate, and spread the total amount of
interest throughout the entire contemplated term of the Obligation Documents
evidencing the Obligations in accordance with the maximum amounts outstanding
from time to time thereunder and the maximum legal rates of interest from time
to time in effect under applicable law in order to lawfully charge the maximum
amount of interest permitted under applicable law.  If applicable law provides
for an interest ceiling under Texas Revised Civil Statutes Annotated article
5069-1.04 (and if no other ceiling has been established for the Obligation in
question), that ceiling shall be the indicated rate ceiling.  As used in this
section the term "applicable law" means the laws of the state of Texas or the
laws of the United States of America, whichever laws allow the greater interest,
as such laws now exist or may be changed or amended or come into effect in the
future.

     Section 16. LOAN DOCUMENT.  This Guaranty is a Loan Document, as defined in
the Loan Agreement, and is subject to the provisions of the Loan Agreement
governing Loan Documents.

     Section 17. COUNTERPARTS.  This Guaranty may be executed in any number of
counterparts, each of which when so executed shall be deemed to constitute one
and the same Guaranty.

          SECTION 18.  GOVERNING LAW.  THIS GUARANTY IS TO BE PERFORMED IN THE
STATE OF TEXAS AND SHALL BE GOVERNED BY AND CONSTRUED AND ENFORCED IN ACCORDANCE
WITH ThE LAWS OF SUCH STATE WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF LAW.

                                     12
<PAGE>

     IN WITNESS WHEREOF, Guarantor has executed and delivered this Guaranty as
of the date first written above.


                              CAPROCK SYSTEMS, INC.


                              By: /s/ Jere W. Thompson, Jr.
                                 ---------------------------------
                                   Jere W. Thompson, Jr.
                                   President




                                     13


<PAGE>
                                                                     [EXECUTION]

                                    GUARANTY

     THIS GUARANTY is made as of July 1, 1996, by Mark Langdale 
("Guarantor"), in favor of Bank One, Texas, National Association ("Lender").

                                   RECITALS:

     1.   CapRock Fiber Network, Ltd., a Texas limited partnership 
("Borrower") has executed in favor of Lender that certain promissory note of 
even date herewith, payable to the order of Lender in the principal amount of 
$10,000,000 (such promissory note, as from time to time amended, and all 
promissory notes given in substitution, renewal or extension therefor or 
thereof, in whole or in part, being herein collectively called the "Note").

     2.   The Note was executed pursuant to a Loan Agreement of even date 
herewith, (herein, as from time to time amended, supplemented or restated, 
called the "Loan Agreement"), by and between Borrower and Lender, pursuant to 
which Lender has agreed to advance funds to Borrower under the Note.

     3.   It is a condition precedent to Lender's obligation to advance funds 
pursuant to the Loan Agreement that Guarantor shall execute and deliver to 
Lender a satisfactory guaranty of Borrower's obligations under the Note and 
the Loan Agreement.

     4.   Guarantor owns a 39.96% limited partnership interest in Borrower.

     NOW, THEREFORE, in consideration of the premises, of the benefits which 
will inure to Guarantor from Lender's advances of funds to Borrower under the 
Loan Agreement, and of Ten Dollars and other good and valuable consideration, 
the receipt and sufficiency. of all of which are hereby acknowledged, and in 
order to induce Lender to advance funds under the Loan Agreement, Guarantor 
hereby agrees with Lender as follows:

                                   AGREEMENTS

     Section 1.  DEFINITIONS.  Reference is hereby made to the Loan Agreement 
for all purposes.  All terms used in this Guaranty which are defined in the 
Loan Agreement and not otherwise defined herein shall have the same meanings 
when used herein.  All references herein to any Obligation Document, Loan 
Document, or other document or instrument refer to the same as from time to 
time amended, supplemented or restated.  As used herein the following terms 
shall have the following meanings:

     "OBLIGATIONS" means collectively all of the indebtedness, obligations, 
and undertakings which are guaranteed by Guarantor and described in 
subsections (a) and (b) of Section 2.

<PAGE>

     "OBLIGATION DOCUMENTS" means this Guaranty, the Note, the Loan 
Agreement, the Loan Documents, all other documents and instruments under, by 
reason of which, or pursuant to which any or all of the Obligations are 
evidenced, governed, secured, or otherwise dealt with, and all other 
documents, instruments, agreements, certificates, legal opinions and other 
writings heretofore or hereafter delivered in connection herewith or 
therewith.

     "OBLIGORS" means Borrower, Guarantor and any other endorsers, guarantors 
or obligors, primary or secondary, of any or all of the Obligations.

     "SECURITY" means any rights, properties, or interests of Lender, under 
the Obligation Documents or otherwise, which provide recourse or other 
benefits to Lender in connection with the Obligations or the non-payment or 
non-performance thereof, including collateral (whether real or personal, 
tangible or intangible) in which Lender has rights under or pursuant to any 
Obligation Documents, guaranties of the payment or performance of any 
Obligation, bonds, surety agreements, keep-well agreements, letters of 
credit, rights of subrogation, rights of offset, and rights pursuant to which 
other claims are subordinated to the Obligations.

     Section 2.  GUARANTY.

     (a) Guarantor hereby irrevocably, absolutely, and unconditionally
guarantees to Lender the prompt, complete, and full payment when due, and no
matter how the same shall become due, of:

          (i)    the Note, including all principal, all interest thereon and all
     other sums payable thereunder; and

          (ii)   all other sums payable under the other Obligation Documents,
     whether for principal, interest, fees or otherwise; and

          (iii)  any and all other indebtedness or liabilities which Borrower
     may at any time owe to Lender, whether incurred heretofore or hereafter or
     concurrently herewith, voluntarily or involuntarily, whether owed alone or
     with others, whether fixed, contingent, absolute, inchoate, liquidated or
     unliquidated, whether such indebtedness or liability arises by notes,
     discounts, overdrafts, open account indebtedness or in any other manner
     whatsoever, and including interest, attorneys' fees and collection costs as
     may be provided by law or in any instrument evidencing any such
     indebtedness or liability.

                                       2
<PAGE>

Without limiting the generality of the foregoing, Guarantor hereby agrees 
that his liability hereunder shall extend to and include all post-petition 
interest, expenses, and other duties and liabilities of Borrower described 
above in this subsection (a), or below in the following subsection (b), which 
would be owed by Borrower but for the fact that they are unenforceable or not 
allowable due to the existence of a bankruptcy, reorganization, or similar 
proceeding involving Borrower.

     (b)  Guarantor hereby irrevocably, absolutely, and unconditionally 
guarantees to Lender the prompt, complete and full performance, when due, and 
no matter how the same shall become due, of all obligations and undertakings 
of Borrower to Lender under, by reason of, or pursuant to any of the 
Obligation Documents.

     (c)  If Borrower shall for any reason fail to pay any Obligation, as and 
when such Obligation shall become due and payable, whether at its stated 
maturity, as a result of the exercise of any power to accelerate, or 
otherwise, Guarantor will, forthwith upon demand by Lender, pay such 
Obligation in full to Lender.  If Borrower shall for any reason fail to 
perform promptly any Obligation, Guarantor will, forthwith upon demand by 
Lender, cause such Obligation to be performed or, if specified by Lender, 
provide sufficient funds, in such amount and manner as Lender shall in good 
faith determine, for the prompt, full and faithful performance of such 
Obligation by Lender or such other Person as Lender shall designate.

     (d)  If either Borrower or Guarantor fails to pay or perform any 
Obligation as described in the immediately preceding subsections (a), (b), or 
(c) Guarantor will incur the additional obligation to pay to Lender, and 
Guarantor will forthwith upon demand by Lender pay to Lender, the amount of 
any and all expenses, including fees and disbursements of Lender's counsel 
and of any experts or agents retained by Lender, which Lender may incur as a 
result of such failure.

     (e)  As between Guarantor and Lender, this Guaranty shall be considered 
a primary and liquidated liability of Guarantor.

     Section 3.  UNCONDITIONAL GUARANTY.

     (a) No action which Lender may take or omit. to take in connection with 
any of the Obligation Documents, any of the Obligations (or any other 
indebtedness owing by Borrower to Lender), or any Security, and no course of 
dealing of Lender with any Obligor or any other Person, shall release or 
diminish Guarantor's obligations, liabilities, agreements or duties 
hereunder, affect this Guaranty in any way, or afford Guarantor any recourse 
against Lender, regardless of whether any such action or inaction may 
increase any risks to or liabilities of Lender or any Obligor or increase any 
risk to or diminish any safeguard of any 

                                     3
<PAGE>

Security.  Without limiting the foregoing, Guarantor hereby expressly agrees 
that Lender may, from time to time, without notice to or the consent of 
Guarantor, do any or all of the following:

          (i)    Amend, change or modify, in whole or in part, any one or more
     of the Obligation Documents and give or refuse to give any waivers or other
     indulgences with respect thereto.

          (ii)   Neglect, delay, fail, or refuse to take or prosecute any action
     for the collection or enforcement of any of the Obligations, to foreclose
     or take or prosecute any action in connection with any Security or
     Obligation Document, to bring suit against any Obligor or any other Person,
     or to take any other action concerning the Obligations or the Obligation
     Documents.

          (iii)  Accelerate, change, rearrange, extend, or renew the time, rate,
     terms, or manner for payment or performance of any one or more of the
     Obligations (whether for principal, interest, fees, expenses,
     indemnifications, affirmative or negative covenants, or otherwise).

          (iv)   Compromise or settle any unpaid or unperformed Obligation or
     any other obligation or amount due or owing, or claimed to be due or owing,
     under any one or more of the Obligation Documents.

          (v)    Take, exchange, amend, eliminate, surrender, release, or
     subordinate any or all Security for any or all of the Obligations, accept
     additional or substituted Security therefor, and perfect or fail to perfect
     Lender's rights in any or all Security.

          (vi)   Discharge, release, substitute or add Obligors.

          (vii)  Apply all monies received from Obligors or others, or from any
     Security for any of the Obligations, as Lender may determine to be in its
     best interest, without in any way being required to marshall Security or
     assets or to apply all or any part of such monies upon any particular
     Obligations.

     (b)  No action or inaction of any Obligor or any other Person, and no 
change of law or circumstances, shall release or diminish Guarantor's 
obligations, liabilities, agreements, or duties hereunder, affect this 
Guaranty in any way, or afford Guarantor any recourse against Lender.  
Without limiting the foregoing, the obligations, liabilities, agreements, and 
duties of Guarantor under this Guaranty shall not be released, diminished, 
impaired, reduced, or affected by the occurrence of any or all of the 
following from time to time, even if occurring without notice to or without 
the consent of Guarantor:

                                       4
<PAGE>

          (i)    Any voluntary or involuntary liquidation, dissolution, sale of
     all or substantially all assets, marshalling of assets or liabilities,
     receivership, conservatorship, assignment for the benefit of creditors,
     insolvency, bankruptcy, reorganization, arrangement, or composition of any
     Obligor or any other proceedings involving any Obligor or any of the assets
     of any Obligor under laws for the protection of debtors, or any discharge,
     impairment, modification, release, or limitation of the liability of, or
     stay of actions or lien enforcement proceedings against, any Obligor, any
     properties of any Obligor, or the estate in bankruptcy of any Obligor in
     the course of or resulting from any such proceedings.

          (ii)   The failure by Lender to file or enforce a claim in any
     proceeding described in the immediately preceding subsection (i) or to take
     any other action in any proceeding to which any Obligor is a party.

          (iii)  The release by operation of law of any Obligor from any of the
     Obligations or any other obligations to Lender.

          (iv)   The invalidity, deficiency, illegality, or unenforceability of
     any of the Obligations or the Obligation Documents, in whole or in part,
     any bar by any statute of limitations or other law of recovery on any of
     the Obligations, or any defense or excuse for failure to perform on account
     of force majeure, act of God, casualty, impossibility, impracticability, or
     other defense or excuse whatsoever.

          (v)    The failure of any Obligor or any other Person to sign any
     guaranty or other instrument or agreement within the contemplation of any
     Obligor or Lender.

          (vi)   The fact that Guarantor may have incurred directly part of the
     Obligations or is otherwise primarily liable therefor.

          (vii)  Without limiting any of the foregoing, any fact or event
     (whether or not similar to any of the foregoing) which in the absence of
     this provision would or might constitute or afford a legal or equitable
     discharge or release of or defense to a guarantor or surety other than the
     actual payment and performance by Guarantor under this Guaranty.

                                       5
<PAGE>

     (c)  Lender may invoke the benefits of this Guaranty before pursuing any 
remedies against any Obligor or any other Person and before proceeding 
against any Security now or hereafter existing for the payment or performance 
of any of the Obligations.  Lender may maintain an action against Guarantor 
on this Guaranty without joining any other Obligor therein and without 
bringing a separate action against any other Obligor.

     (d)  If any payment to Lender by any Obligor is held to constitute a 
preference or a voidable transfer under applicable state or federal laws, or 
if for any other reason Lender is required to refund such payment to the 
payor thereof or to pay the amount thereof to any other Person, such payment 
to Lender shall not constitute a release of Guarantor from any liability 
hereunder, and Guarantor agrees to pay such amount to Lender on demand and 
agrees and acknowledges that this Guaranty shall continue to be effective or 
shall be reinstated, as the case may be, to the extent of any such payment or 
payments. Any transfer by subrogation which is made as contemplated in 
Section 6 prior to any such payment or payments shall (regardless of the 
terms of such transfer) be automatically voided upon the making of any such 
payment or payments, and all rights so transferred shall thereupon revert to 
and be vested in Lender.

     (e)  This is a continuing guaranty and shall apply to and cover all 
Obligations and renewals and extensions thereof and substitutions therefor 
from time to time.

     Section 4.  WAIVER.  Guarantor hereby waives, with respect to the 
Obligations, this Guaranty, and the other Obligation Documents:

     (a)  notice of the incurrence of any Obligation by Borrower, and notice 
of any kind concerning the assets, liabilities, financial condition, 
creditworthiness, businesses, prospects, or other affairs of Borrower (it 
being understood and agreed that: (i) Guarantor shall take full 
responsibility for informing itself of such matters, (ii) Lender shall have 
no responsibility of any kind to inform Guarantor of such matters, and (iii) 
Lender is hereby authorized to assume that Guarantor, by virtue of his 
relationships with Borrower which are independent of this Guaranty, has full 
and complete knowledge of such matters at each time when Lender extends 
credit to Borrower or takes any other action which may change or increase 
Guarantor's liabilities or losses hereunder).

     (b)  notice that Lender, any Obligor, or any other Person has taken or 
omitted to take any action under any Obligation Document or any other 
agreement or instrument relating thereto or relating to any Obligation.

     (c)  notice of acceptance of this Guaranty and all rights of Guarantor 
under Section 34.02 of the Texas Business and Commerce Code.

                                       6
<PAGE>

     (d) demand, presentment for payment, and notice of demand, dishonor, 
nonpayment, or nonperformance.

     (e)  notice of intention to accelerate, notice of acceleration, protest, 
notice of protest, notice of any exercise of remedies (as described in the 
following Section 5 or otherwise), and all other notices of any kind 
whatsoever.

     Section 5.  EXERCISE OF REMEDIES. Lender shall have the right to 
enforce, from time to time, in any order and at Lender's sole discretion, any 
rights, powers and remedies which Lender may have under the Obligation 
Documents or otherwise, including judicial foreclosure, the exercise of 
rights of power of sale, the taking of a deed or assignment in lieu of 
foreclosure, the appointment of a receiver to collect rents, issues and 
profits, the exercise of remedies against personal property, or the 
enforcement of any assignment of leases, rentals, oil or gas production, or 
other properties or rights, whether real or personal, tangible or intangible; 
and Guarantor shall be liable to Lender hereunder for any deficiency 
resulting from the exercise by Lender of any such right or remedy even though 
any rights which Guarantor may have against Borrower or others may be 
destroyed or diminished by exercise of any such right or remedy.  No failure 
on the part of Lender to exercise, and no delay in exercising, any right 
hereunder or under any other Obligation Document shall operate as a waiver 
thereof; nor shall any single or partial exercise of any right preclude any 
other or further exercise thereof or the exercise of any other right.  The 
rights, powers and remedies of Lender provided herein and in the other 
Obligation Documents are cumulative and are in addition to, and not exclusive 
of, any other rights, powers or remedies provided by law or in equity. The 
rights of Lender hereunder are not conditional or contingent on any attempt 
by Lender to exercise any of its rights under any other Obligation Document 
against any Obligor or any other Person.

     Section 6.  LIMITED SUBROGATION. Until all of the Obligations have been 
paid and performed in full Guarantor shall have no right to exercise any 
right of subrogation, reimbursement, indemnity, exoneration, contribution or 
any other claim, which he may now or hereafter have against or to any Obligor 
or any Security in connection with this Guaranty (including any right of 
subrogation under Section 34.04 of the Texas Business and Commerce Code), and 
Guarantor hereby defers any rights to enforce any remedy which Guarantor may 
have against Borrower and any right to participate in any Security until such 
time.  The foregoing shall not be deemed to prohibit reallocations of 
partnership interests among the partners of Borrower in accordance with the 
terms of the limited partnership agreement of Borrower.  If any amount shall 
be paid to Guarantor on account of any such subrogation or other rights, any 
such other remedy, or any Security at any time when all of the Obligations 
and all other expenses guaranteed pursuant hereto shall not have been paid in 
full, such amount shall be held in trust for the benefit of 

                                       7
<PAGE>

Lender, shall be segregated from the other funds of Guarantor and shall 
forthwith be paid over to Lender to be held by Lender as collateral for, or 
then or at any time thereafter applied in whole or in part by Lender against, 
all or any portion of the Obligations, whether matured or unmatured, in such 
order as Lender shall elect.  If Guarantor shall make payment to Lender of 
all or any portion of the Obligations and if all of the Obligations shall be 
finally paid in full, Lender will, at Guarantor's request and expense, 
execute and deliver to Guarantor (without recourse, representation or 
warranty) appropriate documents necessary to evidence the transfer by 
subrogation to Guarantor of an interest in the Obligations resulting from 
such payment by Guarantor; provided that such transfer shall be subject to 
Section 3(d) above and that without the consent of Lender (which Lender may 
withhold in its discretion) Guarantor shall not have the right to be 
subrogated to any claim or right against any Obligor which has become owned 
by Lender.

     Section 7.  SUCCESSORS AND ASSIGNS.  Guarantor's rights or obligations 
hereunder may not be assigned or delegated, but this Guaranty and such 
obligations shall pass to and be fully binding upon the successors of 
Guarantor, as well as Guarantor.  This Guaranty shall apply to and inure to 
the benefit of Lender and its successors or assigns.  Without limiting the 
generality of the immediately preceding sentence, Lender, subject to the 
provisions of the Loan Agreement, may assign, grant a participation in, or 
otherwise transfer any Obligation held by it or any portion thereof, and 
Lender may assign or otherwise transfer its rights or any portion thereof 
under any Obligation Document, to any other Person, and such other Person 
shall thereupon become vested with all of the benefits in respect thereof 
granted to Lender hereunder unless otherwise expressly provided by Lender in 
connection with such assignment or transfer.

     Section 8.  SUBORDINATION AND OFFSET.  Guarantor hereby subordinates and 
makes inferior to the Obligations any and all indebtedness now or at any time 
hereafter owed by Borrower to Guarantor.  Prior to the date the Obligations 
are paid in cash and satisfied in full, and such payment is not subject to 
rescission, Guarantor shall not accept, receive or collect (by set-off or 
other manner) any payment or distribution on account of, or ask for, demand 
or accelerate, directly or indirectly, any payment on such indebtedness 
except as permitted under the Loan Agreement. Guarantor agrees that after the 
occurrence of any Default or Event of Default he will neither permit Borrower 
to repay such indebtedness or any part thereof nor accept payment from 
Borrower of such indebtedness or any part thereof without the prior written 
consent of Lender. If Guarantor receives any such payment without the prior 
written consent of Lender, the amount so paid shall be held in trust for the 
benefit of Lender, shall be segregated from the other funds of Guarantor, and 
shall forthwith be paid over to Lender to be held by Lender as collateral 
for, or then or at any 

                                       8
<PAGE>

time thereafter applied in whole or in part by Lender against, all or any 
portions of the Obligations, whether matured or unmatured, in such order as 
Lender shall elect.

     Guarantor hereby grants to Lender a right of offset to secure the 
payment of the Obligations and Guarantor's obligations and liabilities 
hereunder, which right of offset shall be upon any and all monies, securities 
and other property (and the proceeds there from) of Guarantor now or 
hereafter held or received by or in transit to Lender from or for the account 
of Guarantor, whether for safekeeping, custody, pledge, transmission, 
collection or otherwise, and also upon any and all deposits (general or 
special), credits and claims of Guarantor at any time existing against 
Lender.  Upon the occurrence of any Default or Event of Default Lender is 
hereby authorized at any time and from time to time, without notice to 
Guarantor, to offset, appropriate and apply any and all items hereinabove 
referred to against the Obligations and Guarantor's obligations and 
liabilities hereunder irrespective of whether or not Lender shall have made 
any demand under this Guaranty and although such obligations and liabilities 
may be contingent or unmatured.  Lender agrees promptly to notify Guarantor 
after any such offset and application made by Lender, provided that the 
failure to give such notice shall not affect the validity of such offset and 
application.  The rights of Lender under this section are in addition to, and 
shall not be limited by, any other rights and remedies (including other 
rights of offset) which Lender may have.

     Section 9.  REPRESENTATIONS AND WARRANTIES.  Guarantor hereby represents 
and warrants to Lender as follows:

     (a)  The Recitals at the beginning of this Guaranty are true and correct 
in all respects.

     (b)  The execution, delivery and performance by Guarantor of this 
Guaranty do not and will not contravene any law or governmental regulation or 
any contractual restriction binding on or affecting Guarantor, and do not and 
will not result in or require the creation of any lien, security interest or 
other charge or encumbrance upon or with respect to any of his properties.

     (c)  No authorization or approval or other action by, and no notice to 
or filing with, any governmental authority or other regulatory body or third 
party is required for the due execution, delivery and performance by 
Guarantor of this Guaranty.

     (d)  This Guaranty is a legal, valid and binding obligation of 
Guarantor, enforceable against Guarantor in accordance with its terms except 
as limited by bankruptcy, insolvency or similar laws of general application 
relating to the enforcement of creditors' rights.

                                       9
<PAGE>

     (e)  There is no action, suit or proceeding pending or, to the knowledge 
of Guarantor, threatened against or otherwise affecting Guarantor before any 
court, arbitrator or governmental department, commission, board, bureau, 
agency or instrumentality which may reasonably be expected to materially and 
adversely affect Guarantor's financial condition or his ability to perform 
his obligations hereunder.

     (f)  The direct or indirect value of the consideration received and to 
be received by Guarantor in connection herewith is reasonably worth at least 
as much as the liability and obligations of Guarantor hereunder, and the 
incurrence of such liability and obligations in return for such consideration 
may reasonably be expected to benefit Guarantor, directly or indirectly.

     (g)  Guarantor is not "insolvent" on the date hereof (that is, the sum 
of Guarantor's absolute and contingent liabilities, including the 
Obligations, does not exceed the fair market value of Guarantor's assets).  
Guarantor's capital is adequate for the businesses in which Guarantor is 
engaged and intends to be engaged. Guarantor has not incurred (whether hereby 
or otherwise), nor does Guarantor intend to incur or believe that he will 
incur, debts which will be beyond his ability to pay as such debts mature.

     (h)  All balance sheets, earning statements, financial data and other 
information concerning Guarantor which have been furnished to Lender to 
induce it to accept this Guaranty (or otherwise furnished to Lender in 
connection with the transactions contemplated hereby or associated herewith) 
fairly represent the financial condition of Guarantor as of the dates and the 
results of Guarantor's operations for the periods for which the same are 
furnished.  None of such balance sheets, earnings and cash flow statements, 
financial data and other information contains any untrue statement of a 
material fact or omits to state any material fact which is necessary to make 
any statements contained therein not misleading.

     Section 10.  LIQUID ASSETS.

     (a)  Until the Limited Guarantors are released of their obligations 
pursuant to the Loan Agreement, Guarantor will maintain unencumbered 
investments in cash, cash equivalents, and marketable securities having an 
aggregate market value of at least $1,000,000.

     (b)  Until all of the Obligations have been completely paid and 
performed, Guarantor will maintain a securities account at Banc One Capital 
Corporation holding securities with an aggregate market value of at least 
$400,000, which such account shall be pledged to Lender under that certain 
Securities Pledge Agreement of even date herewith given Guarantor for the 
benefit of Lender to secure repayment of the Obligations.

                                      10
<PAGE>



     Section 11.  NO ORAL CHANGE.  No amendment of any provision of this 
Guaranty shall be effective unless it is in writing and signed by Guarantor 
and Lender, and no waiver of any provision of this Guaranty, and no consent 
to any departure by Guarantor therefrom, shall be effective unless it is in 
writing and signed by Lender, and then such waiver or consent shall be 
effective only in the specific instance and for the specific purpose for 
which given.

     Section 12.  INVALIDITY OF PARTICULAR PROVISIONS.  If any term or 
provision of this Guaranty shall be determined to be illegal or unenforceable 
all other terms and provisions hereof shall nevertheless remain effective and 
shall be enforced to the fullest extent permitted by applicable law.

     Section 13.  HEADINGS AND REFERENCES.  The headings used herein are for 
purposes of convenience only and shall not be used in construing the 
provisions hereof.  The words "this Guaranty," "this instrument," "herein," 
"hereof," "hereby" and words of similar import refer to this Guaranty as a 
whole and not to any particular subdivision unless expressly so limited.  The 
phrases "this section" and "this subsection" and similar phrases refer only 
to the subdivisions hereof in which such phrases occur.  The word "or" is not 
exclusive, and the word "including" (in its various forms) means "including 
without limitation".  Pronouns in masculine, feminine and neuter genders 
shall be construed to include any other gender, and words in the singular 
form shall be construed to include the plural and vice versa, unless the 
context otherwise requires.

     Section 14.  TERM.  This Guaranty shall be irrevocable until all of the 
Obligations have been completely and finally paid and performed, Lender has 
no obligation to make any loans or other advances to Borrower, and all 
obligations and undertakings of Borrower under, by reason of, or pursuant to 
the Obligation Documents have been completely performed, and this Guaranty is 
thereafter subject to reinstatement as provided in Section 3(d). All 
extensions of credit and financial accommodations heretofore or hereafter 
made by Lender to Borrower shall be conclusively presumed to have been made 
in acceptance hereof and in reliance hereon.

     In the event of the death of Guarantor, the obligation of the deceased 
shall continue in full force and effect against his estate as to all 
Obligations that shall have been created or incurred by Borrower prior to the 
time when Lender shall have received notice, in writing, of such death.

     All indebtedness, of whatever kind or character, created pursuant to the 
provisions of any Obligation Document, any other loan agreement between 
Lender and Borrower, or other form of commitment by Lender to Borrower, 
entered into prior to receipt by 

                                      11
<PAGE>

Lender of any notice referred to in the immediately preceding paragraphs of 
this section shall be deemed to be Obligations created, incurred or arising 
prior to receipt of any such notice by Lender, even though advances 
constituting all or a portion of such Obligations are made after Lender's 
receipt of any such notice.

     Section 15. NOTICES. Any notice or communication required or permitted 
hereunder shall be given in writing, sent by personal delivery, by telecopy, 
by delivery service with proof of delivery, or by registered or certified 
United States mail, postage prepaid, addressed to the appropriate party as 
follows:

     To Guarantor:  Mark Langdale
                    5950 Berkshire
                    Suite #900
                    Dallas, Texas 75080
                    Fax No.: (214) 891-3175

     To Lender:     Bank One, Texas, N.A.
                    1717 Main Street
                    Dallas, Texas 75201
                    Attn:  Gina Norris
                    Fax No.:________________

or to such other address or to the attention of such other individual as 
hereafter shall be designated in writing by the applicable party sent in 
accordance herewith.  Any such notice or communication shall be deemed to 
have been given (a) in the case of personal delivery or delivery service, as 
of the date of first attempted delivery at the address or in the manner 
provided herein, (b) in the case of telecopy, upon receipt, or (b) in the 
case of registered or certified United States mail, three days after deposit 
in the mail.

     Section 16.  LIMITATION ON INTEREST.  Lender and Guarantor intend to 
contract in strict compliance with applicable usury law from time to time in 
effect.  Notwithstanding anything to the contrary herein or in any of the 
Obligation Documents, this Guaranty shall never be construed as a contract 
obligating Guarantor to pay interest in excess of the maximum amount of 
interest permitted by applicable law from time to time in effect, and 
Guarantor shall have no liability hereunder to pay interest in excess of such 
maximum amount. Lender expressly disavows any intention to charge or collect 
excessive unearned interest or finance charges in the event the maturity of 
any Obligation is accelerated.  If Lender shall collect monies which are 
deemed to constitute interest which would otherwise increase the amount of 
interest paid by Guarantor to an amount in excess of that permitted by 
applicable law in effect at the relevant times, all such sums deemed to 
constitute interest in excess of such legal limit shall be immediately 
returned to Guarantor upon such determination. In determining whether or not 
the interest paid or payable by 

                                      12
<PAGE>

Guarantor, under any specific circumstance exceeds the maximum interest 
permitted under applicable law, Lender and Guarantor shall, to the greatest 
extent permitted by applicable law: (a) characterize any non-principal 
payment as an expense, fee or premium rather than as interest, (b) exclude 
voluntary payments and the effects thereof, and (c) amortize, prorate, 
allocate, and spread the total amount of interest throughout the entire 
contemplated term of the Obligation Documents evidencing the Obligations in 
accordance with the maximum amounts outstanding from time to time thereunder 
and the maximum legal rates of interest from time to time in effect under 
applicable law in order to lawfully charge the maximum amount of interest 
permitted under applicable law.  If applicable law provides for an interest 
ceiling under Texas Revised Civil Statutes Annotated article 5069-1.04 (and 
if no other ceiling has been established for the Obligation in question), 
that ceiling shall be the indicated rate ceiling.  As used in this section 
the term "applicable law" means the laws of the state of Texas or the laws of 
the United States of America, whichever laws allow the greater interest, as 
such laws now exist or may be changed or amended or come into effect in the 
future.

     Section 17.  LOAN DOCUMENT.  This Guaranty is a Loan Document, as 
defined in the Loan Agreement, and is subject to the provisions of the Loan 
Agreement governing Loan Documents.

     Section 18.  COUNTERPARTS.  This Guaranty may be executed in any number 
of counterparts, each of which when so executed shall be deemed to constitute 
one and the same Guaranty.

     SECTION 19.  GOVERNING LAW.  THIS GUARANTY IS TO BE PERFORMED IN THE 
STATE OF TEXAS AND SHALL BE GOVERNED BY AND CONSTRUED AND ENFORCED IN 
ACCORDANCE WITH THE LAWS OF SUCH STATE WITHOUT REGARD TO PRINCIPLES OF 
CONFLICTS OF LAW.

                 [The remainder of this page intentionally left blank]





                                      13
<PAGE>

     IN WITNESS WHEREOF, Guarantor has executed and delivered this Guaranty 
as of the date first written above.


                                     /s/ Mark Langdale
                                     ----------------------------------
                                     Mark Langdale











                                     14
<PAGE>

                         ACKNOWLEDGMENT AND STIPULATION


     The undersigned hereby acknowledges and stipulates that (i) she is the 
spouse of Guarantor and (ii) all community property interests of Guarantor 
and the undersigned in all their assets whether now owned or hereafter 
acquired (whether subject to the sole management of Guarantor or the 
undersigned) are subject to, and may be used for, the payment and performance 
of Guarantor's obligations under the above Guaranty.  Notwithstanding the 
foregoing, Lender shall have no recourse against the separate property of the 
undersigned for satisfaction of any such obligations.

     This Acknowledgment and Stipulation is entered into as of June 28, 1996, 
for the benefit of Lender.



                                     /s/ Patricia Langdale
                                     -------------------------------
                                     Name:











                                     15

<PAGE>

                                                                    [EXECUTION]


                                       GUARANTY

     THIS GUARANTY is made as of July 1, 1996, by Jere W. Thompson, Jr. 
("Guarantor"), in favor of Bank One, Texas, National Association ("Lender").

                                      RECITALS:

     1.   CapRock Fiber Network, Ltd., a Texas limited partnership ("Borrower")
has executed in favor of Lender that certain promissory note of even date
herewith, payable to the order of Lender in the principal amount of $10,000,000
(such promissory note, as from time to time amended, and all promissory notes
given in substitution, renewal or extension therefor or thereof, in whole or in
part, being herein collectively called the "Note").

     2.  The Note was executed pursuant to a Loan Agreement of even date
herewith, (herein, as from time to time amended, supplemented or restated,
called the "Loan Agreement"), by and between Borrower and Lender, pursuant to
which Lender has agreed to advance funds to Borrower under the Note.

     3.   It is a condition precedent to Lender's obligation to advance funds
pursuant to the Loan Agreement that Guarantor shall execute and deliver to
Lender a satisfactory guaranty of Borrower's obligations under the Note and the
Loan Agreement.

     4.   Guarantor owns a 32.68% limited partnership interest in Borrower.

     NOW, THEREFORE, in consideration of the premises, of the benefits which
will inure to Guarantor from Lender's advances of funds to Borrower under the
Loan Agreement, and of Ten Dollars and other good and valuable consideration,
the receipt and sufficiency of all of which are hereby acknowledged, and in
order to induce Lender to advance funds under the Loan Agreement, Guarantor
hereby agrees with Lender as follows:

                                      AGREEMENTS

     Section 1. DEFINITIONS.  Reference is hereby made to the Loan Agreement for
all purposes.  All terms used in this Guaranty which are defined in the Loan
Agreement and not otherwise defined herein shall have the same meanings when
used herein.  All references herein to any Obligation Document, Loan Document, 
or other document or instrument refer to the same as from time to time amended,
supplemented or restated. As used herein the following terms shall have the
following meanings:

     "OBLIGATIONS" means collectively all of the indebtedness, 

<PAGE>


obligations, and undertakings which are guaranteed by Guarantor and described 
in subsections (a) and (b) of Section 2.

     "OBLIGATION DOCUMENTS" means this Guaranty, the Note, the Loan Agreement,
the Loan Documents, all other documents and instruments under, by reason of
which, or pursuant to which any or all of the Obligations are evidenced,
governed, secured, or otherwise dealt with, and all other documents,
instruments, agreements, certificates, legal opinions and other writings
heretofore or hereafter delivered in connection herewith or therewith.

     "OBLIGORS" means Borrower, Guarantor and any other endorsers, guarantors or
obligors, primary or secondary, of any or all of the Obligations.

     "SECURITY" means any rights, properties, or interests of Lender, under the
Obligation Documents or otherwise, which provide recourse or other benefits to
Lender in connection with the Obligations or the non-payment or non-performance
thereof, including collateral (whether real or personal, tangible or intangible)
in which Lender has rights under or pursuant to any Obligation Documents,
guaranties of the payment or performance of any Obligation, bonds, surety
agreements, keep-well agreements, letters of credit, rights of subrogation,
rights of offset, and rights pursuant to which other claims are subordinated to
the Obligations.

     Section 2.  GUARANTY.

     (a)  Guarantor hereby irrevocably, absolutely, and unconditionally
guarantees to Lender the prompt, complete, and full payment when due, and no
matter how the same shall become due, of:

          (i)    the Note, including all principal, all interest thereon and all
     other sums payable thereunder; and

          (ii)   all other sums payable under the other Obligation Documents,
     whether for principal, interest, fees or otherwise; and

          (iii)  any and all other indebtedness or liabilities which Borrower
     may at any time owe to Lender, whether incurred heretofore or hereafter or
     concurrently herewith, voluntarily or involuntarily, whether owed alone or
     with others, whether fixed, contingent, absolute, inchoate, liquidated or
     unliquidated, whether such indebtedness or liability arises by notes,
     discounts, overdrafts, open account indebtedness or in any other manner
     whatsoever, and including interest, attorneys' fees and collection costs as
     may be provided by law or in any instrument evidencing any such
     indebtedness or liability.


                                        2

<PAGE>

Without limiting the generality of the foregoing, Guarantor hereby agrees that
his liability hereunder shall extend to and include all post-petition interest,
expenses, and other duties and liabilities of Borrower described above in this
subsection (a), or below in the following subsection (b), which would be owed by
Borrower but for the fact that they are unenforceable or not allowable due to
the existence of a bankruptcy, reorganization, or similar proceeding involving
Borrower.

     (b)  Guarantor hereby irrevocably, absolutely, and unconditionally
guarantees to Lender the prompt, complete and full performance, when due, and no
matter how the same shall become due, of all obligations and undertakings of
Borrower to Lender under, by reason of, or pursuant to any of the Obligation
Documents.

     (c)  If Borrower shall for any reason fail to pay any Obligation, as and
when such Obligation shall become due and payable, whether at its stated
maturity, as a result of the exercise of any power to accelerate, or otherwise,
Guarantor will, forthwith upon demand by Lender, pay such Obligation in full to
Lender.  If Borrower shall for any reason fail to perform promptly any
Obligation, Guarantor will, forthwith upon demand by Lender, cause such
Obligation to be performed or, if specified by Lender, provide sufficient funds,
in such amount and manner as Lender shall in good faith determine, for the
prompt, full and faithful performance of such Obligation by Lender or such other
Person as Lender shall designate.

     (d)  If either Borrower or Guarantor fails to pay or perform any Obligation
as described in the immediately preceding subsections (a), (b), or (c) Guarantor
will incur the additional obligation to pay to Lender, and Guarantor will
forthwith upon demand by Lender pay to Lender, the amount of any and all
expenses, including fees and disbursements of Lender's counsel and of any
experts or agents retained by Lender, which Lender may incur as a result of such
failure.

     (e)  As between Guarantor and Lender, this Guaranty shall be considered a
primary and liquidated liability of Guarantor.

     Section 3.  UNCONDITIONAL GUARANTY.

     (a)  No action which Lender may take or omit to take in connection with any
of the Obligation Documents, any of the Obligations (or any other indebtedness
owing by Borrower to Lender), or any Security, and no course of dealing of
Lender with any Obligor or any other Person, shall release or diminish
Guarantor's obligations, liabilities, agreements or duties hereunder, affect
this Guaranty in any way, or afford Guarantor any recourse against Lender,
regardless of whether any such action or inaction may increase any risks to or
liabilities of Lender or any Obligor or increase any risk to or diminish any
safeguard of any 


                                        3

<PAGE>

Security.  Without limiting the foregoing, Guarantor hereby expressly agrees 
that Lender may, from time to time, without notice to or the consent of 
Guarantor, do any or all of the following:

          (i)    Amend, change or modify, in whole or in part, any one or more
     of the Obligation Documents and give or refuse to give any waivers or other
     indulgences with respect thereto.

          (ii)   Neglect, delay, fail, or refuse to take or prosecute any action
     for the collection or enforcement of any of the Obligations, to foreclose
     or take or prosecute any action in connection with any Security or
     Obligation Document, to bring suit against any Obligor or any other Person,
     or to take any other action concerning the Obligations or the Obligation
     Documents.

          (iii)  Accelerate, change, rearrange, extend, or renew the time, rate,
     terms, or manner for payment or performance of any one or more of the
     Obligations (whether for principal, interest, fees, expenses,
     indemnifications, affirmative or negative covenants, or otherwise).

          (iv)   Compromise or settle any unpaid or unperformed Obligation or
     any other obligation or amount due or owing, or claimed to be due or owing,
     under any one or more of the Obligation Documents.

          (v)    Take, exchange, amend, eliminate, surrender, release, or
     subordinate any or all Security for any or all of the Obligations, accept
     additional or substituted Security therefor, and perfect or fail to perfect
     Lender's rights in any or all Security.

          (vi)   Discharge, release, substitute or add Obligors.

          (vii)  Apply all monies received from Obligors or others, or from any
     Security for any of the Obligations, as Lender may determine to be in its
     best interest, without in any way being required to marshall Security or
     assets or to apply all or any part of such monies upon any particular
     Obligations.

     (b)  No action or inaction of any Obligor or any other Person, and no
change of law or circumstances, shall release or diminish Guarantor's
obligations, liabilities, agreements, or duties hereunder, affect this Guaranty
in any way, or afford Guarantor any recourse against Lender.  Without limiting
the foregoing, the obligations, liabilities, agreements, and duties of Guarantor
under this Guaranty shall not be released, diminished, impaired, reduced, or
affected by the occurrence of any or all of the following from time to time,
even if occurring without notice to or without the consent of Guarantor:


                                        4

<PAGE>

          (i)    Any voluntary or involuntary liquidation, dissolution, sale of
     all or substantially all assets, marshalling of assets or liabilities,
     receivership, conservatorship, assignment for the benefit of creditors,
     insolvency, bankruptcy, reorganization, arrangement, or composition of any
     Obligor or any other proceedings involving any Obligor or any of the assets
     of any Obligor under laws for the protection of debtors, or any discharge,
     impairment, modification, release, or limitation of the liability of, or
     stay of actions or lien enforcement proceedings against, any Obligor, any
     properties of any Obligor, or the estate in bankruptcy of any Obligor in
     the course of or resulting from any such proceedings.

          (ii)   The failure by Lender to file or enforce a claim in any
     proceeding described in the immediately preceding subsection (i) or to take
     any other action in any proceeding to which any Obligor is a party.

          (iii)  The release by operation of law of any Obligor from any of the
     Obligations or any other obligations to Lender.

          (iv)   The invalidity, deficiency, illegality, or unenforceability of
     any of the Obligations or the Obligation Documents, in whole or in part,
     any bar by any statute of limitations or other law of recovery on any of
     the Obligations, or any defense or excuse for failure to perform on account
     of force majeure, act of God, casualty, impossibility, impracticability, or
     other defense or excuse whatsoever.

          (v)    The failure of any Obligor or any other Person to sign any
     guaranty or other instrument or agreement within the contemplation of any
     Obligor or Lender.

          (vi)   The fact that Guarantor may have incurred directly part of the
     Obligations or is otherwise primarily liable therefor.

          (vii)  Without limiting any of the foregoing, any fact or event
     (whether or not similar to any of the foregoing) which in the absence of
     this provision would or might constitute or afford a legal or equitable
     discharge or release of or defense to a guarantor or surety other than the
     actual payment and performance by Guarantor under this Guaranty.


                                        5

<PAGE>

     (c)  Lender may invoke the benefits of this Guaranty before pursuing any
remedies against any Obligor or any other Person and before proceeding against
any Security now or hereafter existing for the payment or performance of any of
the Obligations.  Lender may maintain an action against Guarantor on this
Guaranty without joining any other Obligor therein and without bringing a
separate action against any other Obligor.

     (d)  If any payment to Lender by any Obligor is held to constitute a
preference or a voidable transfer under applicable state or federal laws, or if
for any other reason Lender is required to refund such payment to the payor
thereof or to pay the amount thereof to any other Person, such payment to Lender
shall not constitute a release of Guarantor from any liability hereunder, and
Guarantor agrees to pay such amount to Lender on demand and agrees and
acknowledges that this Guaranty shall continue to be effective or shall be
reinstated, as the case may be, to the extent of any such payment or payments.
Any transfer by subrogation which is made as contemplated in Section 6 prior to
any such payment or payments shall (regardless of the terms of such transfer) be
automatically voided upon the making of any such payment or payments, and all
rights so transferred shall thereupon revert to and be vested in Lender.

     (e)  This is a continuing guaranty and shall apply to and cover all
Obligations and renewals and extensions thereof and substitutions therefor from
time to time.

     Section 4.  WAIVER.  Guarantor hereby waives, with respect to the
Obligations, this Guaranty, and the other Obligation Documents:

     (a)  notice of the incurrence of any Obligation by Borrower, and notice of
any kind concerning the assets, liabilities, financial condition,
creditworthiness, businesses, prospects, or other affairs of Borrower (it being
understood and agreed that: (i) Guarantor shall take full responsibility for
informing itself of such matters, (ii) Lender shall have no responsibility of
any kind to inform Guarantor of such matters, and (iii) Lender is hereby
authorized to assume that Guarantor, by virtue of his relationships with
Borrower which are independent of this Guaranty, has full and complete knowledge
of such matters at each time when Lender extends credit to Borrower or takes any
other action which may change or increase Guarantor's liabilities or losses
hereunder).

     (b)  notice that Lender, any Obligor, or any other Person has taken or
omitted to take any action under any Obligation Document or any other agreement
or instrument relating thereto or relating to any Obligation.

     (c)  notice of acceptance of this Guaranty and all rights of Guarantor
under Section 34.02 of the Texas Business and Commerce Code.


                                        6

<PAGE>

     (d)  demand, presentment for payment, and notice of demand, dishonor,
nonpayment, or nonperformance.

     (e)  notice of intention to accelerate, notice of acceleration, protest,
notice of protest, notice of any exercise of remedies (as described in the
following Section 5 or otherwise), and all other notices of any kind whatsoever.

     Section 5.  EXERCISE OF REMEDIES.  Lender shall have the right to enforce,
from time to time, in any order and at Lender's sole discretion, any rights,
powers and remedies which Lender may have under the Obligation Documents or
otherwise, including judicial foreclosure, the exercise of rights of power of
sale, the taking of a deed or assignment in lieu of foreclosure, the appointment
of a receiver to collect rents, issues and profits, the exercise of remedies
against personal property, or the enforcement of any assignment of leases,
rentals, oil or gas production, or other properties or rights, whether real or
personal, tangible or intangible; and Guarantor shall be liable to Lender
hereunder for any deficiency resulting from the exercise by Lender of any such
right or remedy even though any rights which Guarantor may have against Borrower
or others may be destroyed or diminished by exercise of any such right or
remedy.  No failure on the part of Lender to exercise, and no delay in
exercising, any right hereunder or under any other Obligation Document shall
operate as a waiver thereof; nor shall any single or partial exercise of any
right preclude any other or further exercise thereof or the exercise of any
other right.  The rights, powers and remedies of Lender provided herein and in
the other Obligation Documents are cumulative and are in addition to, and not
exclusive of, any other rights, powers or remedies provided by law or in
equity.  The rights of Lender hereunder are not conditional or contingent on any
attempt by Lender to exercise any of its rights under any other Obligation
Document against any Obligor or any other Person.

     Section 6.  LIMITED SUBROGATION. Until all of the Obligations have been
paid and performed in full Guarantor shall have no right to exercise any right
of subrogation, reimbursement, indemnity, exoneration, contribution or any other
claim which he may now or hereafter have against or to any Obligor or any
Security in connection with this Guaranty (including any right of subrogation
under Section 34.04 of the Texas Business and Commerce Code), and Guarantor
hereby defers any rights to enforce any remedy which Guarantor may have against
Borrower and any right to participate in any Security until such time.  The
foregoing shall not be deemed to prohibit reallocations of partnership interests
among the partners of Borrower in accordance with the terms of the limited
partnership agreement of Borrower.  If any amount shall be paid to Guarantor on
account of any such subrogation or other rights, any such other remedy, or any
Security at any time when all of the Obligations and all other expenses
guaranteed pursuant hereto shall not have been paid in full, such amount shall
be held in trust for the benefit of 


                                        7

<PAGE>

Lender, shall be segregated from the other funds of Guarantor and shall 
forthwith be paid over to Lender to be held by Lender as collateral for, or 
then or at any time thereafter applied in whole or in part by Lender against, 
all or any portion of the Obligations, whether matured or unmatured, in such 
order as Lender shall elect.  If Guarantor shall make payment to Lender of 
all or any portion of the Obligations and if all of the Obligations shall be 
finally paid in full, Lender will, at Guarantor's request and expense, 
execute and deliver to Guarantor (without recourse, representation or 
warranty) appropriate documents necessary to evidence the transfer by 
subrogation to Guarantor of an interest in the Obligations resulting from 
such payment by Guarantor; provided that such transfer shall be subject to 
Section 3(d) above and that without the consent of Lender (which Lender may 
withhold in its discretion) Guarantor shall not have the right to be 
subrogated to any claim or right against any Obligor which has become owned 
by Lender.

     Section 7.  SUCCESSORS AND ASSIGNS.  Guarantor's rights or obligations
hereunder may not be assigned or delegated, but this Guaranty and such
obligations shall pass to and be fully binding upon the successors of Guarantor,
as well as Guarantor.  This Guaranty shall apply to and inure to the benefit of
Lender and its successors or assigns.  Without limiting the generality of the
immediately preceding sentence, Lender, subject to the provisions of the Loan
Agreement, may assign, grant a participation in, or otherwise transfer any
Obligation held by it or any portion thereof, and Lender may assign or otherwise
transfer its rights or any portion thereof under any Obligation Document, to any
other Person, and such other Person shall thereupon become vested with all of
the benefits in respect thereof granted to Lender hereunder unless otherwise
expressly provided by Lender in connection with such assignment or transfer.

     Section 8.  SUBORDINATION AND OFFSET.  Guarantor hereby subordinates and
makes inferior to the Obligations any and all indebtedness now or at any time
hereafter owed by Borrower to Guarantor.  Prior to the date the Obligations are
paid in cash and satisfied in full, and such payment is not subject to
rescission, Guarantor shall not accept, receive or collect (by set-off or other
manner) any payment or distribution on account of, or ask for, demand or
accelerate, directly or indirectly, any payment on such indebtedness except as
permitted under the Loan Agreement. Guarantor agrees that after the occurrence
of any Default or Event of Default he will neither permit Borrower to repay such
indebtedness or any part thereof nor accept payment from Borrower of such
indebtedness or any part thereof without the prior written consent of Lender. 
If Guarantor receives any such payment without the prior written consent of
Lender, the amount so paid shall be held in trust for the benefit of Lender,
shall be segregated from the other funds of Guarantor, and shall forthwith be
paid over to Lender to be held by Lender as collateral for, or then or at any


                                        8

<PAGE>

time thereafter applied in whole or in part by Lender against, all or any
portions of the Obligations, whether matured or unmatured, in such order as
Lender shall elect.

     Guarantor hereby grants to Lender a right of offset to secure the payment
of the Obligations and Guarantor's obligations and liabilities hereunder, which
right of offset shall be upon any and all monies, securities and other property
(and the proceeds therefrom) of Guarantor now or hereafter held or received by
or in transit to Lender from or for the account of Guarantor, whether for
safekeeping, custody, pledge, transmission, collection or otherwise, and also
upon any and all deposits (general or special), credits and claims of Guarantor
at any time existing against Lender.  Upon the occurrence of any Default or
Event of Default Lender is hereby authorized at any time and from time to time,
without notice to Guarantor, to offset, appropriate and apply any and all items
hereinabove referred to against the Obligations and Guarantor's obligations and
liabilities hereunder irrespective of whether or not Lender shall have made any
demand under this Guaranty and although such obligations and liabilities may be
contingent or unmatured.  Lender agrees promptly to notify Guarantor after any
such offset and application made by Lender, provided that the failure to give
such notice shall not affect the validity of such offset and application.  The
rights of Lender under this section are in addition to, and shall not be limited
by, any other rights and remedies (including other rights of offset) which
Lender may have.

     Section 9.  REPRESENTATIONS AND WARRANTIES.  Guarantor hereby represents
and warrants to Lender as follows:

     (a)  The Recitals at the beginning of this Guaranty are true and correct in
all respects.

     (b)  The execution, delivery and performance by Guarantor of this Guaranty
do not and will not contravene any law or governmental regulation or any
contractual restriction binding on or affecting Guarantor, and do not and will
not result in or require the creation of any lien, security interest or other
charge or encumbrance upon or with respect to any of his properties.

     (c)  No authorization or approval or other action by, and no notice to or
filing with, any governmental authority or other regulatory body or third party
is required for the due execution, delivery and performance by Guarantor of this
Guaranty.

     (d)  This Guaranty is a legal, valid and binding obligation of Guarantor,
enforceable against Guarantor in accordance with its terms except as limited by
bankruptcy, insolvency or similar laws of general application relating to the
enforcement of creditors' rights.


                                        9

<PAGE>

     (e)  There is no action, suit or proceeding pending or, to the knowledge of
Guarantor, threatened against or otherwise affecting Guarantor before any court,
arbitrator or governmental department, commission, board, bureau, agency or
instrumentality which may reasonably be expected to materially and adversely
affect Guarantor's financial condition or his ability to perform his obligations
hereunder.

     (f)  The direct or indirect value of the consideration received and to be
received by Guarantor in connection herewith is reasonably worth at least as
much as the liability and obligations of Guarantor hereunder, and the incurrence
of such liability and obligations in return for such consideration may
reasonably be expected to benefit Guarantor, directly or indirectly.

     (g)  Guarantor is not "insolvent" on the date hereof (that is, the sum of
Guarantor's absolute and contingent liabilities, including the Obligations,
does not exceed the fair market value of Guarantor's assets).  Guarantor's
capital is adequate for the businesses in which Guarantor is engaged and intends
to be engaged. Guarantor has not incurred (whether hereby or otherwise), nor
does Guarantor intend to incur or believe that he will incur, debts which will
be beyond his ability to pay as such debts mature.

     (h)  All balance sheets, earning statements, financial data and other
information concerning Guarantor which have been furnished to Lender to induce
it to accept this Guaranty (or otherwise furnished to Lender in connection with
the transactions contemplated hereby or associated herewith) fairly represent
the financial condition of Guarantor as of the dates and the results of
Guarantor's operations for the periods for which the same are
furnished. None of such balance sheets, earnings and cash flow
statements, financial data and other information contains any untrue statement
of a material fact or omits to state any material fact which is necessary to
make any statements contained therein not misleading.

     Section 10.  NO ORAL CHANGE.  No amendment of any provision of this
Guaranty shall be effective unless it is in writing and signed by Guarantor and
Lender, and no waiver of any provision of this Guaranty, and no consent to any
departure by Guarantor therefrom, shall be effective unless it is in writing and
signed by Lender, and then such waiver or consent shall be effective only in the
specific instance and for the specific purpose for which given.

     Section 11.  INVALIDITY OF PARTICULAR PROVISIONS.  If any term or provision
of this Guaranty shall be determined to be illegal or unenforceable all other
terms and provisions hereof shall nevertheless remain effective and shall be
enforced to the fullest extent permitted by applicable law.

     Section 12.  HEADINGS AND REFERENCES.  The headings used


                                       10

<PAGE>

     To Guarantor:  Jere W. Thompson, Jr.
                    1701 North Collins Blvd.
                    Suite #100
                    Richardson, Texas  75080
                    Attn:  Dean Renkes
                    Fax No.:________________

     To Lender:     Bank One, Texas, N.A.
                    1717 Main Street
                    Dallas, Texas  75201
                    Attn: Gina Norris
                    Fax No.: (214) 290-2683

or to such other address or to the attention of such other individual as
hereafter shall be designated in writing by the applicable party sent in
accordance herewith.  Any such notice or communication shall be deemed to have
been given (a) in the case of personal delivery or delivery service, as of the
date of first attempted delivery at the address or in the manner provided
herein, (b) in the case of telecopy, upon receipt, or (b) in the case of
registered or certified United States mail, three days after deposit in the
mail.

     Section 15.  LIMITATION ON INTEREST.  Lender and Guarantor intend to
contract in strict compliance with applicable usury law from time to time in
effect.  Notwithstanding anything to the contrary herein or in any of the
Obligation Documents, this Guaranty shall never be construed as a contract
obligating Guarantor to pay interest in excess of the maximum amount of interest
permitted by applicable law from time to time in effect, and Guarantor shall
have no liability hereunder to pay interest in excess of such maximum amount. 
Lender expressly disavows any intention to charge or collect excessive unearned
interest or finance charges in the event the maturity of any Obligation is
accelerated.  If Lender shall collect monies which are deemed to constitute
interest which would otherwise increase the amount of interest paid by Guarantor
to an amount in excess of that permitted by applicable law in effect at the
relevant times, all such sums deemed to constitute interest in excess of such
legal limit shall be immediately returned to Guarantor upon such determination. 
In determining whether or not the interest paid or payable by Guarantor, under
any specific circumstance exceeds the maximum interest permitted under
applicable law, Lender and Guarantor shall, to the greatest extent permitted by
applicable law: (a) characterize any non-principal payment as an expense, fee
or premium rather than as interest, (b) exclude voluntary payments and the
effects thereof, and (c) amortize, prorate, allocate, and spread the total
amount of interest throughout the entire contemplated term of the Obligation
Documents evidencing the Obligations in accordance with the maximum amounts
outstanding from time to time thereunder and the maximum legal rates of interest
from time to time in effect under applicable law in order to 


                                       11

<PAGE>


lawfully charge the maximum amount of interest permitted under applicable 
law.  If applicable law provides for an interest ceiling under Texas Revised 
Civil Statutes Annotated article 5069-1.04 (and if no other ceiling has been 
established for the Obligation in question), that ceiling shall be the 
indicated rate ceiling.  As used in this section the term "applicable law" 
means the laws of the state of Texas or the laws of the United States of 
America, whichever laws allow the greater interest, as such laws now exist 
or may be changed or amended or come into effect in the future.

     Section 16.  LOAN DOCUMENT.  This Guaranty is a Loan Document, as defined
in the Loan Agreement, and is subject to the provisions of the Loan Agreement
governing Loan Documents.

     Section 17.  COUNTERPARTS.  This Guaranty may be executed in any number of
counterparts, each of which when so executed shall be deemed to constitute one
and the same Guaranty.

     SECTION 18.  GOVERNING LAW.  THIS GUARANTY IS TO BE PERFORMED IN THE STATE
OF TEXAS AND SHALL BE GOVERNED BY AND CONSTRUED AND ENFORCED IN ACCORDANCE WITH
THE LAWS OF SUCH STATE WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF LAW.

                [The remainder of this page intentionally left blank]


                                       12


<PAGE>

     IN WITNESS WHEREOF, Guarantor has executed and delivered this Guaranty as
of the date first written above.




                                     /s/ Jere W. Thompson, Jr.
                                     -----------------------------------
                                     Jere W. Thompson, Jr.

























                                       13

<PAGE>
                                                                          Page 1
- --------------------------------------------------------------------------------

                            CONTRIBUTION AGREEMENT

THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, 
EASTERN TIME, ON JULY __, 1998 (the "Expiration Date") UNLESS EXTENDED.

Mail or deliver this Contribution Agreement at the following address:

     IWL Holdings Corp.            VIA FACSIMILE:      (972) 788-4243
     Two Galleria Tower            FOR ASSISTANCE:     (972) 788-4880
     13455 Noel Road, Ste. 1925
     Dallas, Texas  75240

     To participate in the Exchange Offer, a duly executed copy of this
Contribution Agreement and any other documents required by this Contribution
Agreement must be received by Holdings on or prior to the Expiration Date. 
Delivery of this Contribution Agreement or any other required documents to an
address other than as set forth above does not constitute valid delivery.  The
method of delivery of all documents is at the election and risk of the tendering
holder of Partnership Interests.

     This Contribution Agreement is to be completed by the holders of 
Partnership Interests of Caprock Fiber Network, Ltd. (the "Partnership") 
pursuant to the procedures set forth in the Joint Proxy Statement / Prospectus
dated June ___, 1998, (the "Proxy Statement") and this Contribution Agreement.  
Capitalized terms used herein that are defined in the Proxy Statement and not 
otherwise defined in this Contribution Agreement have the meanings ascribed to 
such terms in the Proxy Statement.

              PLEASE CAREFULLY READ THE ACCOMPANYING INSTRUCTIONS 

Gentlemen:

     The undersigned holder of Partnership Interests hereby tenders to 
Holdings all of the Partnership Interests held by the undersigned or, if less 
than all such Partnership Interests, the amount of Partnership Interests 
expressed as a percentage of all outstanding Partnership Interests, indicated 
below the Signature Box.  In exchange for each one percent (1%) of 
Partnership Interest tendered, holders of such Partnership Interests will 
receive 63,194.54 shares of Holdings Common Stock upon the terms and subject 
to the conditions set forth in the Proxy Statement, and this Contribution 
Agreement (which together constitute the "Offer Documents").  Receipt of the 
Offer Documents is hereby acknowledged by the undersigned.

     ASSIGNMENT TO HOLDINGS.  Subject to and effective upon acceptance for 
exchange of any and all Partnership Interests tendered hereby, the 
undersigned hereby assigns to Holdings all right, title, and interest in and 
to such Partnership Interests in exchange for shares of Holdings Common Stock 
on the basis of 63,194.54 shares of Holdings Common Stock for each one 
percent (1%) of Partnership Interest tendered by it and acepted by Holdings 
(the "Exchanged Partnership Interests").


<PAGE>
                                                                          Page 2
- --------------------------------------------------------------------------------


     REPRESENTATIONS.   The undersigned hereby represents that, (i) 
undersigned has the right and authority to transfer the tendered Partnership 
Interest, (ii) such Partnership Interest is free and clear of all liens, 
encumbrances, and adverse claims other than those liens securing indebtedness 
of the Partnership or that were otherwise taken into account in the 
calculation of the exchange value of such Partnership Interest, (iii) the 
undersigned has not made any binding commitment requiring the undersigned to 
dispose of the shares of Holdings Common Stock to be received by the 
undersigned in the Interest Exchange and (iv) the undersigned has no plan or
intention of making such a disposition.

     APPROVALS. At the date this Contribution Agreement is accepted by 
Holdings, the undersigned hereby approves, adopts, and consents to the 
following: (i) the Merger Agreement, (ii) the Plan Proposals, (iii) the 
transfers of the Partnership Interests to Holdings in the Exchange Offer and 
the subsequent transfer of the Partnership Interest of the General Partner to 
C-Sub, which, as a result of the Telecommuncations Merger, will be transferred 
to Telecommunications, (iv) the substitution of Telecommunications as a 
general partner of the Partnership in respect of the Partnership Interests 
transferred to it without the necessity of signing the Shareholders Agreement 
as otherwise required by the Partnership Agreement and the substitution of 
Holdings as a limited partner in respect of the Partnership Interests 
transferred to it, (v) the continuation of the business of the Partnership to 
the extent any of the actions effected pursuant to the Transaction would 
cause a dissolution of the Partnership, and (vi) any amendment to the 
Partnership Agreement necessary to permit any of the actions effected 
pursuant to the Transaction.

     WAIVERS. At the date this Contribution Agreement is accepted by 
Holdings, the undersigned hereby waives (i) any rights it may have to 
purchase Partnership Interests that are transferred in the Interest Exchange 
or subsequently transferred by Holdings to C-Sub or in the Telecommunications 
Merger, including those rights of first refusal granted in the Partnership 
Agreement and (ii) any default that exists under the Partnership Agreement as 
a result of the Interest Exchange or any of the other matters consented to by 
the partner in this Contribution Agreement.

     APPOINTMENTS. At the date this Contribution Agreement is accepted by 
Holdings, the undersigned hereby (i) irrevocably appoints Holdings and its 
executive officers and designees, with full power of substitution, as the 
undersigned's proxies and attorneys-in-fact, to take the following action: 
(a) to exercise all voting and other rights of the undersigned with respect 
to the Exchanged Partnership Interests that they, in their sole discretion, 
may deem proper at any meeting of partners, by written consent, or otherwise; 
(b) to transfer ownership of the Exchanged Partnership Interests on the 
Partnership's books, together with all other evidences of transfer and 
authenticity any of them may deem necessary or appropriate, and (c) to 
receive and exercise all benefits and otherwise exercise all rights of 
ownership of the Exchanged Partnership Interests; (ii) revokes, rescinds and 
withdraws all prior proxies and powers of attorney given with respect to the 
Exchanged Partnership Interests; (iii) agrees not to grant any further 
proxies or powers of attorney with respect to the Exchanged Partnership 
Interests and agrees that any such proxy or power of attorney purported to be 
granted will not be effective.  This appointment is coupled with an interest.

     COVENANTS. The undersigned hereby agrees to take such further action and 
execute such further documents as Holdings may request in order to effect or 
confirm the Interest Exchange and the other matters addressed by this 
Contribution Agreement.


<PAGE>
                                                                          Page 3
- --------------------------------------------------------------------------------


     BINDING EFFECT.  The undersigned understands that a tender of Partnership
Interests to Holdings in exchange for shares of Holdings Common Stock, and the
acceptance thereof by Holdings, will constitute a binding agreement between the
undersigned and Holdings upon the terms and subject to the conditions of the
Exchange Offer.  The undersigned recognizes that under certain circumstances set
forth in the Offer Documents, Holdings may not be required to accept for
exchange any of the Partnership Interests tendered hereby.  In such event, the
undersigned understands that any Contribution Agreement for such Partnership
Interests will be destroyed by Holdings.  All authority herein conferred or
agreed to be conferred shall survive the death or incapacity of the undersigned
and any obligations of the undersigned shall be binding upon the heirs, personal
representatives, successors and assigns of the undersigned. 

<PAGE>
                                                                          Page 4
- --------------------------------------------------------------------------------

                                 SIGNATURE BOX
 (Please complete Boxes A, B, C, D, and E on the following page as necessary)

Please sign exactly as your name is printed (or corrected) above, and insert 
your Taxpayer Identification Number (Federal Employer Identification Number 
or Social Security Number) in the space provided below your signature.  For 
joint owners, each joint owner must sign.  (SEE INSTRUCTION 1.)  The 
signatory hereto hereby certifies under penalties of perjury the statements 
in Box B, Box C and, if applicable, Box D.  If the undersigned is tendering 
less than all Partnership Interests held, the number of Partnership Interests 
tendered is set forth below.

X
             (SIGNATURE OF OWNER)               (DATE)


X
             (SIGNATURE OF OWNER)               (DATE)


Indicate amount of Partnership Interests tendered; otherwise, all Partnership 
Interests held by the undersigned are tendered hereby.

_______% Partnership Interests 

Taxpayer Identification No. ("TIN")

                                       Telephone No.
       (day)               (eve.)


                                     BOX A
                             Additional Information

If signing as a trustee, executor, administrator, guardian, attorney-in-fact, 
officer of a corporation, or other person acting in a fiduciary or 
representative capacity, please provide the following information.  SEE 
INSTRUCTION 1.

                                                           Name and Capacity

                                                                     Address

                                                 Area Code and Telephone No.


                                     BOX B
                              SUBSTITUTE FORM W-9
                          (SEE INSTRUCTION 3 - BOX B)

The person signing this Contribution Agreement hereby certifies the following to
Holdings under penalties of perjury:

(i) The TIN set forth in the signature box of this Contribution Agreement is the
correct TIN of the holder of Partnership Interests , or if this box [   ] is
checked, has applied for a TIN.  If  the holder of Partnership Interests has
applied for a TIN, a TIN has not been issued to the holder of Partnership
Interests, and either: (a) the holder of Partnership Interests has mailed or
delivered an application to receive a TIN to the appropriate IRS Center or
Social Security Administration Office, or (b) the holder of Partnership
Interests intends to mail or deliver an application in the near future (it being
understood that if the holder of Partnership Interests  does not provide a TIN
to Holdings within sixty (60) days, 31% of all reportable payments made to the
holder of Partnership Interests thereafter will be withheld until a TIN is
provided to the Purchaser); and (ii) unless this box [   ] is checked, the
holder of Partnership Interests is not subject to backup withholding either
because the holder of Partnership Interests : (a) is exempt from backup
withholding, (b) has not been notified by the IRS that the holder of Partnership
Interests  is subject to backup withholding as a result of a failure to report
all interest or dividends, or (c) has been notified by the IRS that such holder
of Partnership Interests is no longer subject to backup withholding.

Note: Place an 'X' in the box in (ii) if you are unable to certify that the
holder of Partnership Interests is not subject to backup withholding.


                                     BOX C
                                FIRPTA AFFIDAVIT
                          (SEE INSTRUCTION 3 - BOX C)

Under Section 1445(e)(5) of the Internal Revenue Code and Treas.  Reg. 
1.1445-11T(d), a transferee must withhold tax equal to 10% of the amount 
realized with respect to certain transfers of an interest in a partnership if 
50% or more of the value of the Partnership's gross assets consists of U.S. 
real property interests and 90% or more of the value of the partnership's 
gross assets consists of U.S. real property interests plus cash equivalents 
and the holder of the partnership interest is a foreign person.  To inform 
Holdings that no withholding is required with respect to the Partner's 
interest in the Partnership, the person signing this Contribution Agreement 
hereby certifies the following under penalties of perjury:  (i)Unless this 
box [   ]  is checked, the Partner, if an individual, is a U.S. citizen or a 
resident alien for purposes of U.S. income taxation, and if other than an 
individual, is not a foreign corporation, foreign partnership, foreign 
estate, or foreign trust (as those terms are defined in the Internal Revenue 
Code and Income Tax Regulations); (ii) the Partner's  U.S. social security 
number (for individuals) or employer identification number (for 
non-individuals) is correctly printed in the signature box on the front of 
this Contribution Agreement; and (iii) the Partner's home address (for 
individuals), or office address (for non-individuals), is correctly printed 
(or corrected) on the front of this Contribution Agreement.  If a 
corporation, the jurisdiction of incorporation is ___________________________. 
The person signing this Contribution Agreement understands that this 
certification may be disclosed to the IRS by Holdings and that any false 
statements contained herein could be punished by fine, imprisonment, or both.


                                     BOX D
                     ACCEPTANCE AND ASSIGNMENT BY HOLDINGS

Holdings hereby acknowledges and accepts the assignment and tender of
Partnership Interests as an assignee.  Holdings agrees to be bound by all terms
and conditions of the Partnership Agreement, and by its signature below, shall
be deemed to have accepted such terms and conditions.  Holdings thereafter
immediately assigns to Telecommunications all right, title and interest to the
Partnership Interests, pursuant to the Offer Documents.


                                            By:


                                        BOX E

                           ACCEPTANCE BY TELECOMMUNICATIONS

<PAGE>
                                                                          Page 5
- --------------------------------------------------------------------------------

Telecommunications hereby acknowledges the assignment of general Partnership
Interests by Holdings, and accepts such transfer.  Telecommunications further
agrees to become a substituted general partner of the Partnership and hereby
elects, effective as of the Effective Date, to reconstitute the Partnership, to
continue as the general partner of the Partnership and to continue the
Partnership and its business.  Telecommunications agrees to be bound by all
terms and conditions of the Partnership Agreement and by its signature below,
shall be deemed to have accepted such terms and conditions.


                                            By:


                                        BOX F
                                 NOTICE OF WITHDRAWAL

The undersigned hereby withdraws all Partnership Interests in the Partnership
previously tendered to Holdings.  (PLEASE SIGN EXACTLY AS YOU SIGNED THE TENDER
FORM SENT TO HOLDINGS.)


                                            (Signature)

<PAGE>
                                                                          Page 6
- --------------------------------------------------------------------------------

                             Contribution Agreement
                                  INSTRUCTIONS

             FORMING PART OF THE TERMS AND CONDITIONS OF THE OFFER

1.   TENDER, SIGNATURE REQUIREMENTS, DELIVERY.  In order to tender Partnership
     Interests for exchange the tendering holder of Partnership Interests must
     sign at the "X" in the Signature Box of the Contribution Agreement and
     insert the holder's correct Taxpayer Identification Number (Federal
     Employer Identification or Social Security Number) ("TIN") in the space
     provided below the signature.  If this Contribution Agreement is signed by
     trustees, administrators, guardians, attorneys-in-fact, officers of
     corporations, or others acting in a fiduciary or representative capacity,
     such persons should so indicate when signing and must submit proper
     evidence satisfactory to Holdings of their authority to so act.  For
     Partnership Interests to be validly tendered, a properly completed and duly
     executed Contribution Agreement and any other documents required by this
     Contribution Agreement must be received by Holdings prior to or on
     the Expiration Date at its address or facsimile number set forth on the
     front of this Contribution Agreement.  No alternative, conditional, or
     contingent tenders will be accepted.

2.   TRANSFER TAXES.  Holdings will pay or cause to be paid all transfer fees
     and taxes if any, payable in respect of Partnership Interests accepted for
     payment pursuant to the Exchange Offer.

3.   U.S. PERSONS.  A holder of Partnership Interests who or that is a United
     States citizen or resident alien individual, a domestic corporation, a
     domestic partnership, a domestic trust, or a domestic estate (collectively
     "United States persons"), as those terms are defined in the Internal
     Revenue Code and Income Tax Regulations, should complete the following:

     BOX B - SUBSTITUTE FORM W-9.  In order to avoid 31% federal income tax
     backup withholding the holder must provide to Holdings the holder's correct
     Taxpayer Identification Number in the space provided below the signature
     line and certify, under penalties of perjury, that such holder is not
     subject to such backup withholding. If a correct TIN is not provided,
     penalties may be imposed by the Internal Revenue Service ("IRS"), in
     addition to the holder being subject to backup withholding.  Certain
     holders of Partnership Interests (including, among others, all
     corporations) are not subject to backup withholding.  Backup withholding is
     not an additional tax.  If withholding results in an overpayment of taxes,
     a refund may be obtained from the IRS.

     BOX C - FIRPTA AFFIDAVIT.  To avoid potential withholding of tax pursuant
     to Section 1445 of the Internal Revenue Code, each holder of Partnership
     Interests who or that is a United States Person (as defined in Instruction
     3 above) must certify, under penalties of perjury, such holder's TIN and
     address, and that such holder is not a foreign person.  Tax withheld under
     Section 1445 of the Internal Revenue Code is not an additional tax.  If
     withholding results in an overpayment of tax, a refund may be obtained from
     the IRS.

4.   ADDITIONAL COPIES OF JOINT PROXY AND CONTRIBUTION AGREEMENT.  Requests for
     assistance or additional copies of the Proxy Statement and this
     Contribution Agreement may be obtained from Holdings by calling 
     (972)788-4880.



<PAGE>
                                       
                                  [LETTERHEAD]

                                  June 19, 1998


Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549

Gentlemen:

     We have read the statements made by CapRock Communications Corp., a Texas 
corporation (the "Company"), included in the Company's Registration 
Statement, on Form S-4 under the heading "Accountants" pursuant to item 304 
of Form S-K which we understand will be filed with the Securities and 
Exchange Commission. We agree with the statements concerning our Firm in the 
Company's Registration Statement on Form S-4 and hereby consent to the filing 
of this letter as an Exhibit to such registration statement.


                                       Sincerely,

                                       BURDS REED & MERCER, P.C.

                                       By:  /s/ Ed Mercer
                                            --------------------------------
                                            Secretary
                                            --------------------------------

<PAGE>
                                       
                                  Exhibit 21.1

                        Subsidiaries of the Registrant

<TABLE>
Name                                         Jurisdiction
- ----                                         ------------
<S>                                          <C>
IWL Communications, Incorporated             Texas
CapRock Telecommunications Corp.             Texas
</TABLE>


<PAGE>

                                                                    Exhibit 23.1




The Board of Directors
CAPROCK TELECOMMUNICATIONS CORP. 
(formerly CapRock Communications Corp.)


We consent to the use of our report related to CapRock Telecommunications Corp.
included herein and to the reference to our firm under the headings "Summary
Selected Historical Financial Data of Telecommunications," "Selected Historical
Financial Data of Telecommunications" and "Experts" in the joint proxy
statement/prospectus.


                                        KPMG PEAT MARWICK LLP

Dallas, Texas 
June 19, 1998

<PAGE>


                                                                    Exhibit 23.2


The Partners
CapRock Fiber Network, Ltd.


We consent to the use of our report related to CapRock Fiber Network, Ltd.
included herein and to the reference to our firm under the headings "Summary 
Selected Historical Financial Data of the Partnership," "Selected Historical 
Financial Data of the Partnership" and "Experts" in the joint proxy 
statement/prospectus.


                                             KPMG PEAT MARWICK LLP



Dallas, Texas 
June 19, 1998

<PAGE>

                                                                  Exhibit 23.3


The Board of Directors
IWL Communications, Inc. and Subsidiaries

We consent to the use of our report related to IWL Communications, Inc. and
Subsidiaries included herein and to the reference to our firm under the headings
"Summary Selected Consolidated Historical Financial Data of IWL", "Selected
Historical Financial Data of IWL" and "Experts" in the joint proxy
statement/prospectus.


                                                  KPMG PEAT MARWICK LLP


Houston, Texas
June 19, 1998

<PAGE>


                                                                    Exhibit 23.4


The Board of Directors
CapRock Communications Corp. 
(formerly IWL Holdings Corporation)


We consent to the use of our report related to CapRock Communications Corp.
included herein and to the reference to our firm under the heading "Experts" in
the joint proxy statement/prospectus.


                                        KPMG PEAT MARWICK LLP


Dallas, Texas
June 19, 1998

<PAGE>
                                       
                                                                 Exhibit 23.8

                    CONSENT OF CRUTTENDEN ROTH INCORPORATED


     We hereby consent to the use of our opinion letter dated June 19, 1998 
to the Board of Directors of IWL Communications, Incorporated (the "Company") 
attached as Appendix II to the Joint Proxy Statement/Prospectus of the 
Company and CapRock Telecommunications Corp. (the "Prospectus") contained in 
the Registration Statement on Form S-4 of CapRock Communications Corp. 
filed with the Securities and Exchange Commission on the date hereof (the 
"Registration Statement") and to the references to our firm in the Prospectus 
under the headings "Summary - The Mergers - Opinion of Financial Advisor to 
IWL" and "The Transaction". In giving such consent, we do not admit that we 
come within the category of persons whose consent is required under Section 7 
of the Securities Act of 1933, as amended (the "Securities Act"), or the 
rules and regulations of the Securities and Exchange Commission thereunder 
and we do not thereby admit that we are experts with respect to any part of 
the Registration Statement under the meaning of the term "expert" as used in 
the Securities Act.


                                       CRUTTENDEN ROTH INCORPORATED


                                       By:  /s/ Charles O. Thompson, III
                                           --------------------------------
                                           Charles O. Thompson, III
                                           Managing Director

San Francisco, California
June 19, 1998


<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE AUDITED
BALANCE SHEET FOR MARCH 31, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY 
REFERENCE TO SUCH FINANCIAL STATEMENT.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   2-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             FEB-03-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                               0
<SECURITIES>                                         0
<RECEIVABLES>                                        2
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                     2
<PP&E>                                               0
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                                       2
<CURRENT-LIABILITIES>                                0
<BONDS>                                              0
                                0
                                          0
<COMMON>                                             0
<OTHER-SE>                                           2
<TOTAL-LIABILITY-AND-EQUITY>                         2
<SALES>                                              0
<TOTAL-REVENUES>                                     0
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                      0
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                         0
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0
        

</TABLE>

<PAGE>
 
     DETACH HERE
                          IWL COMMUNICATIONS, INCORPORATED
                               12000 AEROSPACE AVENUE
P                                     SUITE 200
R                               HOUSTON, TEXAS 77034
     SOLICITED BY THE BOARD OF DIRECTORS
     FOR A SPECIAL MEETING OF SHAREHOLDERS
O    The undersigned hereby appoints Ignatius W. Leonards and Byron M. Allen,
X    and each of their proxies and attorneys-in-fact, each with the power to
     appoint his substitute, and hereby authorizes them to represent and to
     vote, as designated on the reverse side, all shares of common stock of IWL
     Communications, Incorporated (the "Company") held or record by the
     undersigned on [         ], 1998 at the Special Meeting of Shareholders to
     be held on [        ], 1998 at [  :  ] a.m., local time, at [place], and
     any adjournments thereof.
Y    THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED AS MARKED BY YOU. HOWEVER,
     IF THIS PROXY IS RETURNED UNMARKED WITH RESPECT TO A PARTICULAR PROPOSAL,
     THIS PROXY WILL BE VOTED FOR SUCH PROPOSAL.
     PLEASE MARK, SIGN AND RETURN THIS PROXY CARD PROMPTLY, USING THE ENCLOSED
     ENVELOPE. NO POSTAGE IS REQUIRED IF MAILED IN THE UNITED STATES.
 
                       CONTINUED AND TO BE SIGNED ON REVERSE       SEE REVERSE
                            SIDE                                       SIDE
 
<PAGE>
  PLEASE MARK                     DETACH HERE
/X/ VOTES AS IN
  THIS EXAMPLE.
 
1.  Approve the Merger Agreement and the transactions contemplated thereby.
 
     / /  FOR               / /  AGAINST              / /  ABSTAIN
 
2.  Approve Holdings' 1998 Equity Incentive Plan.
 
     / /  FOR               / /  AGAINST              / /  ABSTAIN
 
3.  Approve Holdings' 1998 Director Stock Option Plan.
 
     / /  FOR               / /  AGAINST              / /  ABSTAIN
 
4.  Authorize the Company to adjourn the Company's Special Meeting to solicit
    additional proxies.
 
     / /  FOR               / /  AGAINST              / /  ABSTAIN
 
5.  In their discretion, the proxies are authorized to vote upon any other
    business that may properly come before the meeting or any adjournment
    thereof.
 
     / /  FOR               / /  AGAINST              / /  ABSTAIN
 
<TABLE>
<S>                                     <C>                                     <C>
MARK HERE FOR ADDRESS CHANGE AND NOTE                                           MARK HERE IF YOU PLAN TO ATTEND THE
AT LEFT / /                                                                     SPECIAL MEETING ON [            ],
                                                                                1998 / /
</TABLE>
 
    Please date and sign exactly as your name appears hereon. Joint owners
should each sign. Executors, administrators, trustees, guardians or other
fiduciaries should give their full title as such. If for a corporation, please
sign in the full corporate name by a duly authorized officer.
 
<TABLE>
<S>        <C>                  <C>        <C>                  <C>        <C>                  <C>        <C>
Signature   ------------------       Date   ------------------  Signature   ------------------       Date   ------------------
</TABLE>

<PAGE>
 
     DETACH HERE
     CAPROCK COMMUNICATIONS CORP.
     TWO GALLERIA TOWER, SUITE 1925
P    13455 NOEL ROAD
R    DALLAS, TEXAS 75240-6638
     SOLICITED BY THE BOARD OF DIRECTORS
     FOR A SPECIAL MEETING OF SHAREHOLDERS
O    The undersigned hereby appoints Jere W. Thompson, Jr. and Mark Langdale,
X    and each of their proxies and attorneys-in-fact, each with the power to
     appoint his substitute, and hereby authorizes them to represent and to
     vote, as designated on the reverse side, all shares of common stock of
     CapRock Communications Corp. (the "Company") held or record by the
     undersigned on [            ], 1998 at the Special Meeting of Shareholders
     to be held on [            ], 1998 at [  :  ] a.m., local time, at [place],
     and any adjournments thereof.
Y    THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED AS MARKED BY YOU. HOWEVER,
     IF THIS PROXY IS RETURNED UNMARKED WITH RESPECT TO A PARTICULAR PROPOSAL,
     THIS PROXY WILL BE VOTED FOR SUCH PROPOSAL.
     PLEASE MARK, SIGN AND RETURN THIS PROXY CARD PROMPTLY, USING THE ENCLOSED
     ENVELOPE. NO POSTAGE IS REQUIRED IF MAILED IN THE UNITED STATES.
 
                       CONTINUED AND TO BE SIGNED ON REVERSE       SEE REVERSE
                            SIDE                                       SIDE
 
<PAGE>
  PLEASE MARK                     DETACH HERE
/X/ VOTES AS IN
  THIS EXAMPLE.
 
1.  Approve the Merger Agreement and the transactions contemplated thereby.
 
     / /  FOR               / /  AGAINST              / /  ABSTAIN
 
2.  Approve Holdings' 1998 Equity Incentive Plan.
 
     / /  FOR               / /  AGAINST              / /  ABSTAIN
 
3.  Approve Holdings' 1998 Director Stock Option Plan.
 
     / /  FOR               / /  AGAINST              / /  ABSTAIN
 
4.  Authorize the Company to adjourn the Company's Special Meeting to solicit
    additional proxies.
 
     / /  FOR               / /  AGAINST              / /  ABSTAIN
 
5.  In their discretion, the proxies are authorized to vote upon any other
    business that may properly come before the meeting or any adjournment
    thereof.
 
     / /  FOR               / /  AGAINST              / /  ABSTAIN
 
<TABLE>
<S>                                     <C>                                     <C>
MARK HERE FOR ADDRESS CHANGE AND NOTE                                           MARK HERE IF YOU PLAN TO ATTEND THE
AT LEFT / /                                                                     SPECIAL MEETING ON [            ],
                                                                                1998 / /
</TABLE>
 
    Please date and sign exactly as your name appears hereon. Joint owners
should each sign. Executors, administrators, trustees, guardians or other
fiduciaries should give their full title as such. If for a corporation, please
sign in the full corporate name by a duly authorized officer.
 
<TABLE>
<S>        <C>                  <C>        <C>                  <C>        <C>                  <C>        <C>
Signature   ------------------       Date   ------------------  Signature   ------------------       Date   ------------------
</TABLE>

<PAGE>
                                       CONSENT

     The undersigned, John R. Harris, has been nominated to become a director of
CapRock Communications Corp., a Texas corporation (the "Company"), upon
completion of the mergers described in the Registration Statement on Form S-4
(the "Registration Statement") and hereby accepts such nomination.  The
undersigned hereby consents to being named as a director nominee in the
Registration Statement.


                                    /s/ John R. Harris
Date: June 16, 1998                 -----------------------------------------
                                    John R. Harris


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