CAPROCK COMMUNICATIONS CORP
10-Q, 1998-08-14
COMMUNICATIONS SERVICES, NEC
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<PAGE>

                      SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON, D.C.  20549

                        -----------------------------
                                       
                                  FORM 10-Q

[X]  Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange
       Act of 1934
     For the Quarterly Period Ended June 30, 1998

                                      or

[ ]  Transition Report Pursuant to Section 13 or 15(d) of the Securities
     Exchange Act of 1934

              For the transition period from __________ to __________
                                        
                        Commission File Number  0-24581
                                        
                                        
                         CAPROCK COMMUNICATIONS CORP.
             (Exact name of registrant as specified in its charter)


                  TEXAS                                  75-2765572
     (State or Other Jurisdiction of        (I.R.S. Employer Identification No.)
     Incorporation or Organization)

           Two Galleria Tower
        13455 Noel Road, Suite 1925
               Dallas, Texas                               75240
 (Address of Principal Executive Offices)                (Zip Code)
 
        REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:  (972) 982-9500

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.
                                                  Yes [ ]  No [X]

COMMON STOCK, $0.01 PAR VALUE                        1,000
    (Title of Each Class)       (Number of Shares Outstanding at August 7, 1998)



<PAGE>

                            CAPROCK COMMUNICATIONS CORP.
                                     FORM 10-Q
                    FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1998
                                       INDEX

<TABLE>
<CAPTION>
                                                                           PAGE
                                                                          NUMBER
                                                                          ------
<S>                                                                       <C>
PART 1.   FINANCIAL INFORMATION                                               3

Item 1.   Balance Sheet at June 30, 1998                                      3

          Notes to Balance Sheet                                              4

Item 2.   Management's Discussion and Analysis of Financial Condition 
          and Results of Operations                                           6

Item 3.   Quantitative and Qualitative Disclosures About Market Risk          8

PART 2.   OTHER INFORMATION                                                   8

Item 6.   Exhibits and Reports on Form 8-K                                    9

          SIGNATURE PAGE                                                     11

</TABLE>


                                       2
<PAGE>

PART 1.  FINANCIAL INFORMATION
ITEM 1.  FINANCIAL STATEMENTS

                         CAPROCK COMMUNICATIONS CORP.
                                BALANCE SHEET
                                JUNE 30, 1998
                                 (Unaudited)

<TABLE>
<CAPTION>
<S>                                                                      <C>
Assets
Investment in affiliates                                                 $2,000
                                                                         ------
                                                                         ------
Stockholder's Equity:
Preferred stock; $.01 par value; 20,000,000 authorized, none issued      $    -
Common stock; $.01 par value; 200,000,000 authorized;
    1,000 issued and outstanding                                             10
Additional paid-in capital                                                1,990
                                                                         ------
    Total stockholder's equity                                           $2,000
                                                                         ------
                                                                         ------
</TABLE>

See accompanying Notes to Balance Sheet

                                       3
<PAGE>

                          CAPROCK COMMUNICATIONS CORP.

                             Notes to Balance Sheet


(1)  BASIS OF PRESENTATION

     The accompanying balance sheet, which should be read in conjunction with
     the balance sheet and footnotes of CapRock Communications Corp. ("CapRock"
     or the "Company") as of March 31, 1998, which were included in the
     Registration Statement (SEC Registration No. 333-57365) filed on Form S-4
     by CapRock in July 1998, are unaudited, but have been prepared in
     accordance with generally accepted accounting principles for interim
     financial information.  Accordingly, they do not include all of the
     information and footnotes required by generally accepted accounting
     principles for complete financial statements.  In the opinion of
     management, all adjustments (consisting only of normal recurring
     adjustments) considered necessary for a fair presentation have been
     included.  Accounting measurements at interim dates inherently involve
     greater reliance on estimates than at year-end.

     CapRock was incorporated as a Texas corporation on February 3, 1998, to
     serve as a holding company for the operations of CapRock Telecommunications
     Corp. ("Telecommunications"), CapRock Fiber Network Ltd. ("Partnership")
     and IWL Communications, Incorporated ("IWL") after completion of their
     business combination (note 2) in conformance with the provisions of their 
     Agreement and Plan of Merger dated February 16, 1998.

     Effective February 3, 1998, IWL purchased 1,000 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., 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 to 200,000,000 shares.  On
     June 3,1998, IWL funded the initial capital contribution of $2,000.

     The accompanying balance sheet presents the financial position of the
     Company as of June 30, 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 business 
     combination described above (and in note 2) and the contingent liabilities 
     in connection with the senior note offering (note 3).

(2)  BUSINESS COMBINATION

     On February 16,1998, the Company entered into a definitive agreement
     to combine through mergers and an interest exchange (the "Combination")
     with Telecommunications, IWL and the Partnership.  The Combination is
     subject to, among other matters, approval by the shareholders of the IWL
     and Telecommunications and the partners of the Partnership. The transaction
     is expected to be accounted for as a "pooling of interests" and qualify as 
     a tax-free exchange of shares and partnership interests.

(3)  SUBSEQUENT EVENT

     In July 1998, CapRock, Telecommunications and the Partnership (with 
     IWL as guarantor) issued, through a private placement under Rule 144A 
     under the Securities Act of 1933, as amended, $150 million aggregate 
     principal amount of their 12% Senior Notes due 2008 (the "Notes"), which
     closed on July 16, 1998.  Interest on the Notes will be payable 
     semi-annually in arrears on January 15 and July 15 of each year, 
     commencing on January 15, 1999, at the rate of 12% per annum. The net 
     proceeds from the offering were initially placed in a segregated escrow 
     account and will be released only in accordance with the provisions of 
     an escrow agreement.  Upon consummation of the Combination, (i) the 
     proceeds in such escrow account will be released to CapRock, (ii) 
     Telecommunications and the Partnership will no longer be co-obligors 
     under the Notes, and (iii) IWL will be released from its obligations in 
     connection with the special offer to purchase.  If the Combination is 
     not consummated by August 31, 1998, CapRock, Telecommunications, and the 
     Partnership will be required to offer to purchase the Notes (the "Special

                                       4
<PAGE>

     Offer to Purchase") at a price equal to 101% of the principal amount 
     thereof, plus accrued and unpaid interest, if any, to the date of such 
     repurchase.  To the extent the amounts held in the escrow account are 
     insufficient to repurchase all tendered Notes, each of CapRock, 
     Telecommunications, the Partnership, and IWL (as guarantor) shall be 
     jointly and severally liable to fund any such deficiency (with an 
     estimated contingent liability of not more than approximately $7.0 
     million).  There can be no assurance that CapRock, Telecommunications, 
     the Partnership and IWL will have sufficient funds available at the time 
     of such offer to purchase to repay all Notes tendered.

                                       5
<PAGE>

ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
          RESULTS OF OPERATIONS

     The following discussion and analysis should be read in conjunction with 
the balance sheet and footnotes of CapRock as of March 31, 1998, which were 
included in the Registration Statement filed on Form S-4 by CapRock in July 
1998.  The Company believes that all necessary adjustments (consisting only 
of normal recurring adjustments) have been included in the amounts stated 
below to present fairly the following quarterly information.  Accounting 
measurements at interim dates inherently involve greater reliance on 
estimates than at year-end. 

Forward Looking Information

     Certain information contained herein contains forward-looking statements 
(as defined in the Private Securities Litigation Reform Act of 1995) 
regarding future events or the future financial performance of the Company, 
and are subject to a number of risks and other factors which could cause the 
actual results of the Company to differ materially from those contained in 
and anticipated by the forward-looking statements.  Among such factors are: 
the completion of the Combination, industry concentration and the Company's 
dependence on major customers, competition, risks associated with 
international operations and entry into new markets, government regulation, 
variability in operating results, general business and economic conditions, 
customer acceptance of any demand for the Company's new products, the 
Company's overall ability to design, test, and introduce new products on a 
timely basis, reliance on third parties and other telecommunication carriers, 
the Company's ability to manage change, dependence on key personnel, 
dependence on information systems and changes in technology, and possible 
service interruptions.  The forward-looking statements contained herein are 
necessarily dependent upon assumptions, estimates and data that may be 
incorrect or imprecise.  Accordingly, any forward-looking statements included 
herein do not purport to be predictions of future events or circumstances and 
may not be realized.  Forward-looking statements contained herein include, 
but are not limited to, forecasts, projections and statements relating to 
inflation, future acquisitions and anticipated capital expenditures.  All 
forecasts and projections in this report are based on management's current 
expectations of the Company's near term results, based on current information 
available pertaining to the Company, including the aforementioned risk 
factors.  Actual results could differ materially.

Overview

     CapRock was formed on February 3, 1998 to combine the businesses of 
Telecommunications, the Partnership and IWL.  Telecommunications and the 
Partnership are facilities-based providers of telecommunications services to 
carriers and to small and medium-sized businesses in Texas. IWL is a provider 
of advanced communications solutions, primarily to customers with oil and gas 
exploration operations in the Gulf of Mexico and the North Sea and remote, 
difficult access regions of the world. CapRock believes that the Combination 
will enable it to accelerate the implementation of its business plan and to 
achieve it business objectives by enhancing its revenue opportunities, 
creating greater operational depth, providing the opportunity to cross-sell 
its products, enabling it to capitalize on international opportunities and 
reducing its capital expenditures.

                                       6
<PAGE>

Results of Operations

     The Company has not commenced operations as of June 30, 1998.

Liquidity and Capital Resources

     Upon completion of the Combination, CapRock expects to require 
significant financing for capital expenditure and working capital 
requirements. CapRock currently estimates that its aggregate capital 
requirements will total approximately $50 million in the second half of 1998 
and approximately $140 million in 1999.  CapRock expects to make substantial 
capital expenditures thereafter.  Capital expenditures will be required to: 
(i) fund the construction and operation of its 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.

     In July 1998, CapRock, Telecommunications and the Partnership (with the 
IWL as guarantor) issued through a private placement under Rule 144A under 
the Securities Act of 1933, as amended, $150 million aggregate principal 
amount of their Notes, which closed on July 16, 1998. Interest on the Notes 
will be payable semiannually in arrears on January 15 and July 15 of each 
year, commencing on January 15, 1999, at the rate of 12% per annum. The net 
proceeds from the offering were initially placed in a segregated escrow 
account and will be released only in accordance with the provisions of an 
escrow agreement. Upon consummation of the Combination, (i) the proceeds in 
such escrow account will be released to CapRock, (ii) Telecommunications and 
the Partnership will no longer be co-obligors under the Notes, and (iii) IWL 
will be released from its obligations in connection with the special offer to 
purchase. If the Combination is not consummated by August 31, 1998, CapRock, 
Telecommunications, and the Partnership will be required to offer to purchase 
the Notes at a price equal to 101% of the principal amount thereof, plus 
accrued and unpaid interest, if any, to the date of such repurchase. To the 
extent the amounts held in the escrow account are insufficient to repurchase 
all tendered Notes, each of CapRock, Telecommunications, the Partnership, and 
IWL (as guarantor) shall be jointly and severally liable to fund any such 
deficiency (with an estimated contingent liability of not more than 
approximately $7.0 million). There can be no assurance that CapRock, 
Telecommunications, the Partnership and IWL will have sufficient funds 
available at the time of such offer to purchase to repay all Notes tendered.

     In the event the Combination is consummated by August 31, 1998, 
Telecommunications and the Partnership will be released from their 
obligations under the Notes (and IWL will be released from it obligations 
under such offer to purchase), and CapRock will be the sole obligor 
thereunder.

     Upon completion of the Combination, CapRock may 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 venture 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 CapRock will be successful in producing 
sufficient cash flow or raising sufficient debt or equity capital to meet its 
strategic business objectives or that such funds, if available, will be 
available on a timely basis and on terms that are acceptable to CapRock and 
within limitations contained in CapRock's financing arrangements. Failure to 
generate or raise sufficient funds may require CapRock to delay or abandon 
some or all of its future expansion plans or expenditures, which could have a 
material adverse effect on CapRock's financial condition, results of 
operations and cash flow.

                                       7
<PAGE>

Credit Facility

     CapRock is currently negotiating with a lender to obtain a senior credit 
facility in the amount of $25 million and which CapRock expects will become 
available upon consummation of the Combination with IWL.  The credit facility 
will replace existing credit agreements and facilities with 
Telecommunications, the Partnership and IWL.  The final terms and conditions 
of the credit facility will depend on negotiation of definitive documentation 
for the credit facility. There can be no assurance, however, as to when or if 
CapRock will enter into the credit facility or as to the amount or terms of 
the credit facility.

New Accounting Pronouncements

     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 statements 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 statement disclosures for prior periods 
are required to be restated. The Company is in the process of evaluating the 
disclosure requirements.  The adoption of SFAS 131 will not have an impact on 
the Company's results of operation, financial position or cash flows and any 
effect will be limited to the presentation of its disclosures.

     In June 1998, the FASB issued SFAS No. 133, "Accounting for Derivative 
Instruments and Hedging Activity" ("SFAS 133") which requires that all 
derivatives be recognized in the statement of financial position as either 
assets or liabilities and measured at fair value.  In addition, all hedging 
relationships must be designated, reassessed and documented pursuant to the 
provisions of SFAS No. 133.  SFAS 133 is effective for fiscal years beginning 
after June 15, 1999.  The adoption of SFAS 133 will not have an impact on the 
Company's results of operations, financial position or cash flow.

Contingencies

     The Company is not currently a party to any litigation.

Year 2000

     As the year 2000 approaches, the Company recognizes the need to ensure 
its operations will not be adversely impacted by Year 2000 computer software 
failures.  The Company is addressing this issue to ensure the availability 
and integrity of its financial systems and the reliability of its operational 
systems.  The Company has established processes for evaluating and managing 
the risks and costs associated with this problem.  The Company has and will 
continue to make certain investments in its software systems and applications 
to ensure the Company is year 2000 compliant.  The financial impact to the 
Company 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 Company.

ITEM 3.        QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

     Not applicable.


PART II.  OTHER INFORMATION

                                       8
<PAGE>

Item 6.    Exhibits and Reports on Form 8-K

(a)  Exhibits

<TABLE>
<S>         <C>
      2.1   First Amendment to Agreement and Plan of Merger and Plan of
            Exchange, dated as of April 30, 1998, by and among the Company,
            CapRock, Telecommunications, the Partnership, IWL Acquisition
            Corp., and CapRock Acquisition Corp. (collectively, the "Parties").
            (Incorporated by reference to Exhibit 2.2 to the Registration
            Statement on Form S-4, as amended, first filed by the Company with
            the SEC on June 22, 1998) (SEC Registration No. 333-57365) (the
            "Form S-4").

      2.2   Second Amendment to Agreement and Plan of Merger and Plan of
            Exchange, dated as of June 20, 1998, by and among the Parties
            (incorporated by reference to Exhibit 2.3 to the Form S-4).

      3.1   Amended and Restated Articles of Incorporation of the Company
            (incorporated by reference to Exhibit 3.1 to the Form S-4).

      3.2   Bylaws of the Company (incorporated by reference to Exhibit 3.2 to 
            the Form S-4).

      4.1   Specimen certificate for the Common Stock of the Company
            (incorporated by reference to Exhibit 4.3 to the Form S-4).

    +27.1   Financial Data Schedule of CapRock.

    +99.1   Form of Form 10-Q of CapRock Telecommunications Corp. filed pursuant
            to that certain Indenture (the "Indenture") dated July 16, 1998 by
            and among the Company, CapRock Telecommunications Corp.
            ("Telecommunications"), CapRock Fiber Network, Ltd. (the
            "Partnership"), IWL Communications, Incorporated and PNC Bank,
            National Association.

    +99.2   Form of Form 10-Q of CapRock Fiber Network, Ltd. filed pursuant to 
            the Indenture.

    +99.3   Articles of Incorporation of Telecommunications, as amended.

    +99.4   Bylaws of Telecommunications, as amended.

    +99.5   Agreement and Limited Partnership of the Partnership, as amended.

     99.6   Second Amendment to Loan Agreement dated April 29, 1998 by and
            between the Partnership and Bank One, Texas, N.A. ("Bank One") 
            (incorporated by reference to Exhibit 10.52 to the Form S-4).

     99.7   License Agreement dated July 16, 1998 by and between
            Telecommunications and RiverRock Systems, Ltd. (incorporated by 
            reference to Exhibit 10.53 to the Form S-4).

     99.8   Eighth Amendment to Loan and Security Agreement dated as of June
            18, 1998 by and between Telecommunications and Bank One 
            (incorporated by reference to Exhibit 10.56 to the Form S-4).

     99.9   Renewal and Extension Promissory Note dated as of June 18, 1998
            executed by Telecommunications payable to the order of Bank One in
            the original principal amount of $7,000,000.00 (incorporated by
            reference to Exhibit 10.57 to the Form S-4.

     99.10  Intercompany Promissory Note dated as of June 18, 1998 originally
            executed by the Partnership payable to the order of
            Telecommunications in the principal amount of $2,500,000.00 and
            endorsed by Telecommunications in favor of Bank One (incorporated
            by reference to Exhibit 10.58 to the Form S-4).

                                       9
<PAGE>

     99.11  Third Amendment to Loan Agreement dated as of June 18, 1998 by and
            between the Partnership and Bank One  (incorporated by reference to
            Exhibit 10.60 to the Form S-4).

    +99.12  Computation of Earnings per share for Telecommications.

    +99.13  Form of Financial Data Schedule of Telecommunications.

    +99.14  Form of Financial Data Schedule of the Partnership.

(b)  Reports on Form 8-K

     None.

</TABLE>

- ----------------------
+ Filed herewith.







                                       10
<PAGE>

                            CAPROCK COMMUNICATIONS CORP.


     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.



                                   CAPROCK COMMUNICATIONS CORP.


Date: August 13, 1998              By:  /s/ Kevin W. McAleer
                                        ---------------------------------------
                                        Kevin W. McAleer
                                        Chief Financial Officer (Duly Authorized
                                        Officer and Principal Financial and
                                        Accounting Officer)









                                       11

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
UNAUDITED BALANCE SHEET AS OF JUNE 30, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH BALANCE SHEET.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                               0
<SECURITIES>                                         0
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                     0
<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>

                      SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON, D.C.  20549

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

                                   FORM OF
                                  FORM 10-Q

       FILED AS EXHIBIT 99.1 TO FORM 10-Q OF CAPROCK COMMUNICATIONS CORP.
          PURSUANT TO INDENTURE, DATED JULY 16, 1998 (THE "INDENTURE")
                   BY AND AMONG CAPROCK COMMUNICATIONS CORP.,
                       CAPROCK TELECOMMUNICATIONS CORP.,
                          CAPROCK FIBER NETWORK, LTD.
                        AND THE OTHER PARTIES THERETO.

/X/  Quarterly Report For the Quarterly Period Ended June 30, 1998

                                      or

/ /  Transition Report For the transition period from __________ to __________


                        CAPROCK TELECOMMUNICATIONS CORP.
             (Exact name of registrant as specified in its charter)


                  TEXAS                                  75-2361414
     (State or Other Jurisdiction of        (I.R.S. Employer Identification No.)
     Incorporation or Organization)

             Two Galleria Tower
        13455 Noel Road, Suite 1925
               Dallas, Texas                               75240
 (Address of Principal Executive Offices)                (Zip Code)

        REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:  (972) 982-9500

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.
                                                  Yes [ ]  No [X]

COMMON STOCK, $0.01 PAR VALUE                       10,398,954
    (Title of Each Class)       (Number of Shares Outstanding at August 7, 1998)

<PAGE>


                         CAPROCK TELECOMMUNICATIONS, CORP.
                                     FORM 10-Q
                    FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1998
                                       INDEX
<TABLE>
<CAPTION>
                                                                             PAGE
                                                                            NUMBER

<S>       <C>                                                                 <C>
PART 1.   FINANCIAL INFORMATION

Item 1.   Balance Sheets at December 31, 1997 and June 30, 1998               3

          Statements of Operations for the Six Months and
          Three Months Ended June 30, 1997 and 1998                           4

          Statements of Cash Flows for the Six Months Ended
          June 30, 1997 and 1998                                              5

          Notes to Interim Financial Statements                               6

Item 2.   Management's Discussion and Analysis of Financial Condition and
          Results of Operations                                               8

Item 3.   Quantitative and Qualitative Disclosures About Market Risk          11

PART 2.   OTHER INFORMATION

Item 6.   Exhibits and Reports on Form 8-K                                    11

          SIGNATURE PAGE                                                      12
</TABLE>

                                         2
<PAGE>

PART 1.  FINANCIAL INFORMATION
ITEM 1.  FINANCIAL STATEMENTS

                                  CAPROCK TELECOMMUNICATIONS CORP.
                                           BALANCE SHEETS

<TABLE>
<CAPTION>

                                                                    December 31, 1997       June 30, 1998
                                                                    -----------------       -------------
                                                                                              (Unaudited)
<S>                                                                       <C>                <C>
Assets
Current  assets:
  Cash                                                                    $     2,162        $     2,439
  Accounts receivable and unbilled services, less allowance                 8,325,352         10,283,720
     for doubtful accounts of $1,640,722 and $292,912 at
     December 31, 1997 and June 30, 1998, respectively
  Due from affiliate                                                                -          1,250,000
  Income taxes receivable                                                           -            300,837
  Prepaid expenses and other                                                  571,650            755,563
  Deferred income taxes                                                       624,095             88,160
                                                                          -----------        -----------
     Total current assets                                                   9,523,259         12,680,719
Property and equipment, net                                                 3,692,670          4,739,115
Other assets                                                                  110,741            423,689
                                                                          -----------        -----------
     Total assets                                                         $13,326,670        $17,843,523
                                                                          -----------        -----------
                                                                          -----------        -----------

Liabilities and stockholders' equity
Current liabilities:
  Current portion of long-term debt                                       $    42,722        $   304,417
  Accounts payable                                                          7,320,590          9,431,424
  Bank line of credit                                                       1,152,329          2,601,685
  Accrued liabilities                                                         491,601            226,762
  Current installments of obligations under capital lease                     239,672            254,417
  Income taxes payable                                                        324,550                  -
  Unearned revenue                                                            527,774            155,661
                                                                          -----------        -----------
     Total current liabilities                                             10,099,238         12,974,366
Deferred income taxes                                                         527,394            530,416
Obligations under capital leases and other long-term debt                     452,938            264,655
                                                                          -----------        -----------
     Total liabilities                                                     11,079,570         13,769,437

Stockholders' equity:
  Common stock, no par value; 100,000,000 shares authorized,                1,458,273          1,458,273
     10,398,954 shares issued and outstanding; 9,680 shares
     held in treasury
  Unearned compensation                                                      (396,244)          (354,532)
  Retained earnings                                                         1,185,071          2,970,345
                                                                          -----------        -----------
     Total stockholders' equity                                             2,247,100          4,074,086
                                                                          -----------        -----------
     Total liabilities and stockholders' equity                           $13,326,670        $17,843,523
                                                                          -----------        -----------
                                                                          -----------        -----------
</TABLE>

See accompanying Notes to Interim Financial Statements

                                     3
<PAGE>

                                                CAPROCK TELECOMMUNICATIONS CORP.
                                                    STATEMENTS OF OPERATIONS
                                                           (Unaudited)

<TABLE>
<CAPTION>
                                                                 SIX MONTHS ENDED              THREE MONTHS ENDED
                                                                     JUNE 30,                       JUNE 30,
                                                                 ----------------              ------------------
                                                               1997            1998             1997           1998
                                                               ----            ----             ----           ----
<S>                                                        <C>             <C>              <C>            <C>
Telecommunication services                                 $20,128,426     $32,415,539      $11,446,794    $16,645,227
Cost of revenues                                            15,769,595      23,910,786        8,652,055     12,108,778
                                                           -----------     -----------      -----------    -----------
     Gross profit                                            4,358,831       8,504,753        2,794,739      4,536,449
Operating cost and expenses:
     Selling, general, and administrative expenses           3,216,741       4,942,552        1,729,387      2,766,666
     Depreciation and amortization                             303,254         484,361          161,131        252,941
                                                           -----------     -----------      -----------    -----------
          Total operating expenses                           3,519,995       5,426,913        1,890,519      3,019,607
                                                           -----------     -----------      -----------    -----------
          Income from operations                               838,836       3,077,840          904,220      1,516,842
Interest expense, net                                         (167,527)       (158,997)         (82,047)       (72,887)
                                                           -----------     -----------      -----------    -----------
          Income before income taxes                           671,309       2,918,843          822,173      1,443,955
Income taxes                                                   242,594       1,133,570          300,677        555,922
                                                           -----------     -----------      -----------    -----------
Net income                                                 $   428,715     $ 1,785,274      $   521,496    $   888,033
                                                           -----------     -----------      -----------    -----------
                                                           -----------     -----------      -----------    -----------

Net income per common share:
      Basic                                                $      0.04     $      0.17      $      0.05    $      0.09
      Diluted                                              $      0.04     $      0.17      $      0.05    $      0.08

Weighted average shares outstanding:
      Basic                                                 10,398,954      10,398,954       10,398,954     10,398,954
      Diluted                                               10,398,954      10,576,001       10,398,954     10,576,295
</TABLE>

See accompanying Notes to Interim Financial Statements

                                                              4
<PAGE>

                                  CAPROCK TELECOMMUNICATIONS CORP.
                                      STATEMENTS OF CASH FLOWS
                                            (Unaudited)
<TABLE>
<CAPTION>
                                                             SIX MONTHS ENDED JUNE 30,
                                                            ---------------------------
                                                                1997          1998
                                                                ----          ----
<S>                                                        <C>             <C>
Cash flows from operating activities:
  Net income                                               $    428,715    $  1,785,274
  Adjustments to reconcile net income to net cash
      provided by operating activities:
        Depreciation and amortization                           303,254         484,361
        Deferred income taxes                                   242,594         538,957
        Compensation expense related to stock
          option grants                                           -              41,712
        Allowance for doubtful accounts                         595,697         337,663
        Changes in operating assets and liabilities:
          Accounts receivable                                (3,328,315)     (2,296,031)
          Due from affiliate                                      -          (1,250,000)
          Prepaid expenses and other                           (190,982)       (496,862)
          Accounts payable and accrued liabilities            2,112,399       2,100,411
          Income taxes payable                                    6,620        (625,387)
          Unearned revenue                                      404,963        (372,113)
                                                           ------------    ------------
            Net cash provided by operating activities           574,945         247,895

Cash flows from investing activities - Purchases of
  property and equipment                                       (591,648)     (1,530,715)

Cash flows from financing activities:
  Principal payments on notes payable                          (200,000)        (50,000)
  Proceeds from line of credit                               17,025,696      31,611,788
  Principal payments on line of credit                      (16,431,483)    (30,162,438)
  Principal payments under capital lease obligations           (112,636)       (116,253)
                                                           ------------    ------------
            Net cash provided by financing activities           281,577       1,283,097
Net increase in cash                                            264,874             277
Cash at beginning of year                                         -               2,162
                                                           ------------    ------------
Cash at end of period                                      $    264,874    $      2,439
                                                           ------------    ------------
                                                           ------------    ------------

Supplemental disclosure of cash flow information:
  Cash paid for interest                                   $    175,623    $    158,997
                                                           ------------    ------------
                                                           ------------    ------------
  Cash paid for income taxes                               $    121,000    $  1,220,000
                                                           ------------    ------------
                                                           ------------    ------------
</TABLE>

See accompanying Notes to Interim Financial Statements

                                            5
<PAGE>

                        CAPROCK TELECOMMUNICATIONS CORP.

                    Notes to Interim Financial Statements

(1)  BASIS OF PRESENTATION

     The accompanying  interim financial statements, which should be read in
     conjunction with the financial statements and footnotes of CapRock
     Telecommunications Corp. ("Telecommunications" or the "Company") for
     the fiscal year ended December 31, 1997, which were included in the
     Registration Statement (SEC Registration No. 333-57365) filed on Form
     S-4 by CapRock Communications Corp. ("CapRock") in July 1998, are
     unaudited (the December 31, 1997 balance sheet was derived from the
     Company's audited financial statements), but have been prepared in
     accordance with generally accepted accounting principles for interim
     financial information.  Accordingly, they do not include all of the
     information and footnotes required by generally accepted accounting
     principles for complete financial statements.  In the opinion of
     management, all adjustments (consisting only of normal recurring
     adjustments) considered necessary for a fair presentation have been
     included.  Accounting measurements at interim dates inherently involve
     greater reliance on estimates than at year-end.

     The results of operations for the six months ended June 30, 1998 are not
     necessarily indicative of the results to be expected for the entire fiscal
     year.

(2)  EARNINGS PER SHARE

     In February 1997, the Financial Accounting Standards Board issued
     Statement No. 128 (FAS 128), "Earnings Per Share". Statement 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 earnings 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>
                                                 Basic Earnings Per Share
                                       ----------------------------------------------
                                           Six Months Ended      Three Months Ended
                                                June 30,               June 30,
                                       ----------------------------------------------
                                        1997          1998         1997        1998
                                        ----          ----         ----        ----
<S>                                 <C>           <C>          <C>           <C>
Numerator:
Net income                          $   428,715   $ 1,785,274  $   521,496      888,033
                                    -----------   -----------  -----------   ----------
Denominator:

Denominator for basic earnings
  Per share - weighted average
  Shares outstanding                 10,398,954    10,398,954   10,398,954   10,398,954
Effect of dilutive securities:
  Employee stock options                      -       177,047            -      177,341
                                    -----------   -----------  -----------   ----------
                                     10,398,954    10,576,001   10,398,954   10,576,295
                                    -----------   -----------  -----------   ----------
                                    -----------   -----------  -----------   ----------

     Basic earnings per share              $.04          $.17         $.05         $.09
                                           ----          ----         ----         ----
                                           ----          ----         ----         ----

     Dilutive earnings per share           $.04          $.17         $.05         $.08
                                           ----          ----         ----         ----
                                           ----          ----         ----         ----
</TABLE>

                                        6
<PAGE>

(3)  BUSINESS COMBINATION

     On February 16,1998 the Company entered into a definitive agreement to
     combine through mergers and an interest exchange (the "Combination")
     with CapRock, IWL Communications, Incorporated. ("IWL") and CapRock
     Fiber Network, Ltd. (the "Partnership").  The Combination is subject to,
     among other matters, approval by the shareholders of the IWL and
     Telecommunications and the partners of the Partnership. The transaction
     is expected to be accounted for as a "pooling of interests" and qualify
     as a tax-free exchange of shares and partnership interests.

(4)  DEBT

     In June 1998, Telecommunications increased its line of credit from $2.5
     million to $7 million.  The Company can advance a maximum of $2.5
     million to the Partnership and has advanced $1,250,000 to the
     Partnership as of June 30, 1998.  The line of credit will mature on
     August 31, 1998.  The balance outstanding under such line of credit as
     of June 30, 1998 was approximately $2.6 million. CapRock intends to use
     part of the proceeds from the sale of the Notes (as defined below) to
     repay indebtedness owing by Telecommunications to the bank.  In the
     event the Combination is not consummated by August 31, 1998 (and as a
     result the net proceeds from the issuance of the Notes are not available),
     Telecommunications intends to renegotiate the terms of the line of credit.
     If such negotiations are not successful, Telecommunications will seek
     additional sources of financing. No assurance can be given that such
     financing will be available or, if available, that the terms will be
     satisfactory.

     The Company was in technical default of a covenant requiring the lender's
     consent to the Combination.  The Company has obtained the lender's consent
     to the Combination.

(5)  SUBSEQUENT EVENT

     In July 1998, CapRock, Telecommunications and the Partnership (with
     IWL as guarantor) issued, through a private placement under Rule 144A
     under the Securities Act of 1933, as amended, $150 million aggregate
     principal amount of their 12% Senior Notes due 2008 (the "Notes"), which
     closed on July 16, 1998.  Interest on the Notes will be payable
     semi-annually in arrears on January 15 and July 15 of each year,
     commencing on January 15, 1999, at the rate of 12% per annum.  The net
     proceeds from the offering were initially placed in a segregated escrow
     account and will be released only in accordance with the provisions of
     an escrow agreement.  Upon consummation of the Combination, (i) the
     proceeds in such escrow account will be released to CapRock, (ii)
     Telecommunications and the Partnership will no longer be co-obligors
     under the Notes, and (iii) IWL will be released from its obligations in
     connection with the special offer to purchase. If the Combination is not
     consummated by August 31, 1998, CapRock, Telecommunications, and the
     Partnership will be required to offer to purchase the Notes (the
     "Special Offer to Purchase") at a price equal to 101% of the principal
     amount thereof, plus accrued and unpaid interest, if any, to the date of
     such repurchase.  To the extent the amounts held in the escrow account
     are insufficient to repurchase all tendered Notes, each of CapRock,
     Telecommunications, the Partnership, and IWL (as guarantor) shall be
     jointly and severally liable to fund any such deficiency (with an
     estimated contingent liability of not more than approximately $7.0
     million).  There can be no assurance that CapRock, Telecommunications,
     the Partnership and IWL will have sufficient funds available at the time
     of such offer to purchase to repay all Notes tendered.

                                     7
<PAGE>

ITEM 2.        MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
               RESULTS OF OPERATIONS

     The following discussion and analysis should be read in conjunction with
the financial statements and footnotes of Telecommunications for the fiscal year
ended December 31, 1997, which were included in the Registration Statement filed
on Form S-4 by CapRock in July 1998.  The Company believes that all necessary
adjustments (consisting only of normal recurring adjustments) have been
included in the amounts stated below to present fairly the following quarterly
information.  Accounting measurements at interim dates inherently involve
greater reliance on estimates than at year-end. Quarterly operating results
have varied significantly in the past and can be expected to vary in the
future.  Results of operations for any particular quarter are not necessarily
indicative of results of operations for a full year.

Forward Looking Information

     Certain information contained herein contains forward-looking statements
(as defined in the Private Securities Litigation Reform Act of 1995)
regarding future events or the future financial performance of the Company,
and are subject to a number of risks and other factors which could cause the
actual results of the Company to differ materially from those contained in
and anticipated by the forward-looking statements.  Among such factors are:
completion of the Combination, industry concentration and the Company's
dependence on major customers, competition, risks associated with
international operations and entry into new markets, government regulation,
variability in operating results, general business and economic conditions,
customer acceptance of any demand for the Company's new products, the
Company's overall ability to design, test, and introduce new products on a
timely basis, reliance on third parties and other telecommunication carriers,
the Company's ability to manage change, dependence on key personnel,
dependence on information systems and changes in technology, and possible
service interruptions.  The forward-looking statements contained herein are
necessarily dependent upon assumptions, estimates and data that may be
incorrect or imprecise.  Accordingly, any forward-looking statements included
herein do not purport to be predictions of future events or circumstances and
may not be realized.  Forward-looking statements contained herein include,
but are not limited to, forecasts, projections and statements relating to
inflation, future acquisitions and anticipated capital expenditures.  All
forecasts and projections in this report are based on management's current
expectations of the Company's near term results, based on current information
available pertaining to the Company, including the aforementioned risk
factors.  Actual results could differ materially.

Overview

     Telecommunications is a facilities-based provider of voice, data and
broadband communications services to interexchange carriers, to 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.

RESULTS OF OPERATIONS:

COMPARISON OF THREE MONTHS ENDED JUNE 30, 1997 AND 1998

     REVENUE.  Total revenues increased $5.2 million from $11.4 million for
the three months ended June 30, 1997 to $16.6 million for the same period in
1998. The 46% 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

                                     8
<PAGE>

June 30, 1997, revenues from international operations increased $1.9 million, or
59%, from $3.2 million and representing 28% of total revenues to $5.1  million
for the same period in 1998, representing 31% of total revenues for such period.
Domestic revenues increased $3.3 million, or 40% from $8.2 million to $11.5
million for the same period in 1998.

     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 from approximately
$10.5 million for the three months ended June 30, 1997 to $15.1 million for the
same period in 1998. Cost of revenues increased from $8.7 million for the three
months ended June 30, 1997 to $12.1 million for the same period in 1998. 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
24% to 27% 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 from
$1.6 million for the three months ended June 30, 1997 to $2.8 million for the
same period in 1998. The increase resulted from the expanded administrative and
information activities needed to support Telecommunications' growth, 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 from
$161,000 for the three months ended June 30, 1997 to $253,000 for the same
period in 1998. 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 June 30, 1997,
Telecommunications' interest expense was $83,000 as compared to $73,000 for the
same period in 1998.

     INCOME TAXES.  Telecommunications' income tax expense was $301,000 for the
three months ended June 30, 1997, as compared to income tax expense of $556,000
for the same period in 1998.

     NET INCOME.  Telecommunications reported net income of $521,000 for the
three months ended June 30, 1997, compared to net income of $888,000 for the
three months ended June 30, 1998 as a result of the factors discussed above.

COMPARISON OF SIX MONTHS ENDED JUNE 30, 1997 AND 1998

     REVENUE.  Total revenues increased $12.3 million from approximately $20.1
million during the six months ended June 30, 1997 to approximately $32.4 million
in 1998. The 61% 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. For the six
months ended June 30, 1997, revenues from international operations increased
$5.3 million, or 98%, from $5.4 million and representing 27% of total revenues
to $10.7  million for the same period in 1998, representing 33% of total
revenues for such period.  Domestic revenues increased $7 million, or 48% from
$14.7 million to $21.7 million for the same period in 1998.

     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 from approximately $19.3
million during the six months ended June 30, 1997 to approximately $29.3 million
during the corresponding period in 1998. Cost of revenues increased from
approximately $15.8 million for the six months

                                     9
<PAGE>

ended June 30, 1997 to approximately $23.9 million for the same period in
1998. 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 22% to 26% 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 from
$3.2 million for the six months ended June 30, 1997 to approximately $4.9
million for the six month ended June 30, 1998. 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 from
approximately $303,000 during the six months ended June 30, 1997 to
approximately $484,000 for the same period in 1998. 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.

     INTEREST EXPENSE.  For the six months ended June 30, 1997,
Telecommunications' interest expense was approximately $168,000 as compared to
approximately $159,000 for the same period in 1998.

     INCOME TAXES.  Telecommunications' income tax expense was approximately
$242,000 during the six months ended June 30, 1997 as compared to income tax
expense of approximately $1.1 million for the same period in 1998. This increase
was attributable to the improved profitability of Telecommunications in 1998.

     NET INCOME.  Telecommunications realized net income of approximately
$429,000 in the six months ended June 30, 1997, as compared to net income of
approximately $1.8 million in the corresponding period of 1998 as a result of
the factors discussed above.

Liquidity and Capital Resources

     In June 1998, Telecommunications increased its bank line of credit to $7
million, subject to a borrowing base based on accounts receivable and
property, plant and equipment. Telecommunications can advance a maximum of
$2.5 million to the Partnership. The line of credit will mature on August 31,
1998. CapRock intends to use part of the proceeds from the sale of the Notes
to repay indebtedness owing by Telecommunications to the bank. If the
Combination is not consummated by August 31, 1998 (and as a result, the net
proceeds from the issuance of the Notes are not available to CapRock),
Telecommunications intends to renegotiate the terms of its loans with the
bank. If such negotiations are not successful, Telecommunications will seek
additional sources of financing. No assurance can be given that such
financing will be available or, if available, that the terms will be
satisfactory.

     Total cash expended during the six months ended June 30, 1998 to fund
capital expenditures and repayments of long-term debt was approximately $1.5
million and $50,000, respectively.  Total cash generated from operations was
approximately $248,000 for the same period.  Total cash provided during this
same period from revolving loans was approximately $1.5 million.

     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.

                                     10
<PAGE>

NEW ACCOUNTING PRONOUNCEMENTS

     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.

     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 statements 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 statement disclosures for prior periods are required to be restated.
The Company is in the process of evaluating the disclosure requirements.  The
adoption of SFAS 131 will not have an impact on the Company's results of
operation, financial position or cash flows and any effect will be limited to
the presentation of its disclosures.

     In June 1998, the FASB issued SFAS No. 133, "Accounting for Derivative
Instruments and Hedging Activity" ("SFAS 133") which requires that all
derivatives be recognized in the statement of financial position as either
assets or liabilities and measured at fair value.  In addition, all hedging
relationships must be designated, reassessed and documented pursuant to the
provisions of SFAS No. 133.  SFAS 133 is effective for fiscal years beginning
after June 15, 1999.  The adoption of SFAS 133 will not have an impact on the
Company's results of operations, financial position or cash flow.

CONTINGENCIES

     The Company is not currently a party to any litigation.  However, the
Company 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 operation, financial condition or cash flow of the Company.

YEAR 2000

     As the year 2000 approaches, the Company recognizes the need to ensure its
operations will not be adversely impacted by Year 2000 computer software
failures.  The Company is addressing this issue to ensure the availability and
integrity of its financial systems and the reliability of its operational
systems.  The Company has established processes for evaluating and managing the
risks and costs associated with this problem.  The Company has and will continue
to make certain investments in its software systems and applications to ensure
the Company is year 2000 compliant.  The financial impact to the Company 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 Company.

ITEM 3.        QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

     Not applicable.

PART II.  OTHER INFORMATION

Item 6.    Exhibits and Reports on Form 8-K

(a)  Exhibits

     See Item 6(a)(Exhibits) to the Form 10-Q of CapRock Communications Corp.
     for the period ended June 30, 1998 of which this document is an exhibit.

(b)  Reports on Form 8-K

     None.

                                     11
<PAGE>


                         CAPROCK TELECOMMUNICATIONS, CORP.


     Pursuant to the requirements of the Indenture, Telecommunications has 
duly caused this report to be signed on its behalf by the undersigned 
thereunto duly authorized.

                              CAPROCK TELECOMMUNICATIONS, CORP.


Date: August 13, 1998         By:  /s/ Kevin W. McAleer
                                 ----------------------
                              Kevin W. McAleer
                              Chief Financial Officer (Duly Authorized
                              Officer and Principal Financial and Accounting
                              Officer)



                                       12


<PAGE>

                      SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON, D.C.  20549

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

                                   FORM OF
                                  FORM 10-Q

                           FILED AS EXHIBIT 99.2 TO
                   FORM 10-Q OF CAPROCK COMMUNICATIONS CORP.
                         PURSUANT TO INDENTURE, DATED
                  JULY 16, 1998 (THE "INDENTURE") BY AND AMONG
                            CAPROCK COMMUNICATIONS
                       CORP., CAPROCK TELECOMMUNICATIONS
                             CORP., CAPROCK FIBER
                             NETWORK, LTD. AND THE
                             OTHER PARTIES THERETO.

[X]  Quarterly Report  For the Quarterly Period Ended June 30, 1998

                                      or

[ ]  Transition Report For the transition period from __________ to __________


                           CAPROCK FIBER NETWORK, LTD.
             (Exact name of registrant as specified in its charter)


                  TEXAS                                  75-2457966
     (State or Other Jurisdiction of        (I.R.S. Employer Identification No.)
     Incorporation or Organization)

           Two Galleria Tower
       13455 Noel Road, Suite 1925
             Dallas, Texas                                  75240
 (Address of Principal Executive Offices)                (Zip Code)

        REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:  (972) 982-9500

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.
                                                  Yes [ ]  No [X]


<PAGE>


                            CAPROCK FIBER NETWORK, LTD.
                                     FORM 10-Q
                    FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1998
                                       INDEX


<TABLE>
<CAPTION>
                                                                           Page
                                                                          Number
<S>                                                                       <C>
PART 1.   FINANCIAL INFORMATION

Item 1.   Balance Sheets at December 31, 1997 and June 30, 1998              3

          Statements of Operations for the Six Months and
          Three Months Ended June 30, 1997 and 1998                          4

          Statements of Cash Flows for the Six Months Ended
          June 30, 1997 and 1998                                             5

          Notes to interim Financial Statements                              6

Item 2.   Management's Discussion and Analysis of Financial Condition and
          Results of Operations                                              8

Item 3.   Quantitative and Qualitative Disclosures About Market Risk        11

PART 2.   OTHER INFORMATION

Item 6.   Exhibits and Reports on Form 8-K                                  11

          SIGNATURE PAGE                                                    12
</TABLE>

                                       2
<PAGE>

PART 1.  FINANCIAL INFORMATION
ITEM 1.  FINANCIAL STATEMENTS

                       CAPROCK FIBER NETWORK, LTD.
                           BALANCE SHEETS

<TABLE>
<CAPTION>
                                                           December 31, 1997   June 30, 1998
                                                           -----------------   -------------
                                                                                (Unaudited)
<S>                                                        <C>                 <C>
Assets
Current  assets:
     Cash and cash equivalents                                $   172,543      $   378,028
     Trade receivables                                            206,404           39,292
     Costs and estimated earnings in excess of billings                 -        1,355,000
     Prepaid expenses and other                                     3,602            3,602
                                                           -----------------   -------------
          Total current assets                                    382,549        1,775,922
Property and equipment, net                                     9,299,859       11,893,870
Other assets                                                       96,797           54,656
                                                           -----------------   -------------
          Total assets                                        $ 9,779,205      $13,724,448
                                                           -----------------   -------------
                                                           -----------------   -------------
Liabilities and partners' capital (deficit)
Current liabilities:
     Current portion of long-term debt                        $   886,304      $ 8,877,101
     Due to affiliate                                                   -        1,250,000
     Accounts payable                                              81,904        1,559,834
     Accrued commitment and guarantor fees                        406,010          431,131
     Accrued liabilities                                           67,337          356,493
     Income taxes payable                                               -          374,862
     Unearned revenue                                                   -          161,700
                                                           -----------------   -------------
          Total current liabilities                             1,441,555       13,011,121
Deferred income taxes                                                   -          169,961
Long-term debt, excluding current portion                       8,664,588                -
                                                           -----------------   -------------
          Total liabilities                                    10,106,143       13,181,082
Partners' capital (deficit)
     General partner                                               (3,273)           5,433
     Limited partners                                            (323,665)         537,933
                                                           -----------------   -------------
                                                                 (326,938)         543,366
                                                           -----------------   -------------
          Total liabilities and partners' capital (deficit)   $ 9,779,205      $13,724,448
                                                           -----------------   -------------
                                                           -----------------   -------------
</TABLE>

See accompanying Notes to Interim Financial Statements

                                     3
<PAGE>

                         CAPROCK FIBER NETWORK LTD.
                          STATEMENTS OF OPERATIONS
                                (Unaudited)

<TABLE>
<CAPTION>
                                                           Six Months Ended           Three Months Ended
                                                                June 30,                   June 30,
                                                         ------------------------   ----------------------
                                                           1997           1998         1997        1998
                                                         ---------   ------------   ----------  ----------
<S>                                                      <C>         <C>            <C>         <C>
Revenues:
     Telecommunication services                          $ 845,013   $  1,196,337   $  485,100  $  608,804
     Network construction services                               -      1,355,000            -   1,355,000
                                                         ---------   ------------   ----------  ----------
          Total Revenues                                   845,013      2,551,337      485,100   1,963,804
Operating costs and expenses:
     Network access expenses                                21,526         12,857        6,057       6,219
     Cost of network construction services                       -        114,339            -     114,339
     Selling, general, and administrative expenses         125,704        203,281       34,803     131,261
     Depreciation and amortization                         348,435        396,853      182,868     211,926
                                                         ---------   ------------   ----------  ----------
          Total operating costs and expenses               495,665        727,330      223,728     463,745
                                                         ---------   ------------   ----------  ----------
          Income from operations                           349,348      1,824,007      261,372   1,500,059
Interest expense, net                                     (370,832)      (408,880)    (205,491)   (199,275)
                                                         ---------   ------------   ----------  ----------
          Income (loss) before income taxes                (21,484)     1,415,127       55,881   1,300,784
Income taxes                                                     -        544,823            -     500,801
                                                         ---------   ------------   ----------  ----------
Net income (loss)                                        $ (21,484)    $  870,304    $  55,881  $  799,983
                                                         ---------   ------------   ----------  ----------
                                                         ---------   ------------   ----------  ----------
</TABLE>

See accompanying Notes to  Interim Financial Statements

                                     4
<PAGE>

                                 STATEMENTS OF CASH FLOWS
                                       (Unaudited)

<TABLE>
<CAPTION>
                                                                  Six Months Ended June 30,
                                                               ------------------------------
                                                                    1997              1998
                                                               -----------        -----------
<S>                                                            <C>                <C>
Cash flows from operating activities:
  Net income (loss)                                            $   (21,484)       $   870,304
  Adjustments to reconcile net income to net cash
     provided by operating activities:
       Depreciation and amortization                               348,435            396,853
       Deferred income taxes                                          -               169,961
       Changes in operating assets and liabilities:
          Accounts receivable                                         -               167,112
          Due to affiliate                                            -             1,250,000
          Costs in excess of billings                                 -            (1,355,000)
          Prepaid expenses and other                              (128,317)            42,141
          Accounts payable and accrued liabilities              (1,549,418)         1,792,206
          Income taxes payable                                        -               374,862
          Unearned revenue                                            -               161,700
                                                               -----------        -----------
          Net cash provided by (used in) operating activities   (1,350,784)         3,870,139

Cash flows from investing activities - Purchases of
  property and equipment                                        (1,373,738)        (2,947,723)

Cash flows from financing activities:
  Proceeds from long-term note agreement                         2,961,859               -
  Principal payments on long-term note agreement                      -              (716,931)
                                                               -----------        -----------
          Net cash provided by (used in)
          financing activities                                   2,961,859           (716,931)
Net increase in cash                                               237,337            205,485
Cash at beginning of year                                           25,415            172,543
                                                               -----------        -----------
Cash at end of period                                          $   262,752        $   378,028
                                                               -----------        -----------
                                                               -----------        -----------

Supplemental disclosure of cash flow information:
  Cash paid for interest                                       $   184,390        $   389,414
                                                               -----------        -----------
                                                               -----------        -----------
  Cash paid for income taxes                                   $      -           $      -
                                                               -----------        -----------
                                                               -----------        -----------
</TABLE>

See accompanying Notes to Interim Financial Statements

                                     5
<PAGE>

                          CAPROCK FIBER NETWORK, LTD.
                     Notes to Interim Financial Statements

(1)  BASIS OF PRESENTATION

     The accompanying  interim financial statements, which should be read in
     conjunction with the financial statements and footnotes of CapRock Fiber
     Network, Ltd. (or the "Partnership") for the fiscal year ended December
     31, 1997, which were included in the Registration Statement (SEC
     Registration No. 333-57365) filed on Form S-4 by CapRock Communications
     Corp. ("CapRock") in July 1998, are unaudited (the December 31, 1997
     balance sheet was derived from the Partnership's audited financial
     statements), but have been prepared in accordance with generally
     accepted accounting principles for interim financial information.
     Accordingly, they do not include all of the information and footnotes
     required by generally accepted accounting principles for complete
     financial statements.  In the opinion of management, all adjustments
     (consisting only of normal recurring adjustments) considered necessary
     for a fair presentation have been included.  Accounting measurements at
     interim dates inherently involve greater reliance on estimates than at
     year-end.

     The results of operations for the six months ended June 30, 1998 are not
     necessarily indicative of the results to be expected for the entire
     fiscal year.

(2)  CONSTRUCTION OF FIBER NETWORK

     The Partnership is constructing a fiber optic network between San
     Antonio and Laredo, and Corpus Christi, McAllen, Harlingen, and
     Brownsville, Texas. The total construction costs incurred relating to
     the fiber optic network for the three months ended June 30, 1998 were
     approximately $2.8 million. The Partnership capitalizes all network
     construction costs, which include all direct material and labor costs
     and those indirect costs related to contract performance.

     On February 6, 1998, the Partnership entered into an indefeasible right
     to use contract ("IRU") for dark fiber.  The contract provided for an
     IRU for a specified number of fiber strands with and option to acquire
     an IRU for additional fiber strands.  The customer exercised the
     option to acquire the IRU for the additional fiber strands in July 1998.

     The Partnership recognizes the revenue associated with the IRU under the
     percentage of completion method and measures the progress based upon
     construction costs incurred to the total estimated construction costs.
     Revenue recognized for three months ended June 30, 1998 relating to the
     IRU was approximately  $1.4 million.   The contract costs are estimated
     using allocations of the total cost of constructing the network.

(3)  BUSINESS COMBINATION

     On February 16,1998 the Partnership entered into a definitive agreement
     to combine through mergers and an interest exchange (the "Combination")
     with CapRock, IWL Communications, Incorporated. ("IWL") and CapRock
     Telecommunications Corp. ("Telecommunications").  The Combination is
     subject to, among other matters, approval by the shareholders of the IWL
     and Telecommunications and the partners of the Partnership. The
     transaction is expected to be accounted for as a "pooling of interests"
     and qualify as a tax-free exchange of shares and partnership interests.

(4)  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
     Houston to Corpus Christi fiber optic network.  Approximately $8.9
     million was outstanding as of June 30, 1998.  Principal payments began
     on March 31, 1997. The debt will mature on August 31, 1998.  The
     Partnership anticipates that the proceeds from the Notes (as defined
     below) will be used to repay such loan (see note 5).  In the event the
     Combination is not consummated by August 31, 1998 (and as a result the
     net proceeds from the issuance of the Notes are not available), the
     Partnership intends to renegotiate the terms of the construction loan. If
     such negotiations are not successful, the Partnership will seek
     additional sources of financing. No assurance can be given that such
     financing will be available or, if available, that the terms will be
     satisfactory.

                                     6
<PAGE>

     The Partnership was in violation of certain covenants requiring
     maintenance of debt as a percentage of adjusted net income as of
     December 31, 1996, 1997 and April 30, 1998, and was also in technical
     default of a covenant requiring the lender's consent to the Combination.
     The Partnership has obtained a waiver of these covenant violations and
     has obtained the lender's consent to the Combination and has executed an
     amendment revising these covenants.

(5)  SUBSEQUENT EVENT

     In July 1998, CapRock, Telecommunications and the Partnership (with
     IWL as guarantor) issued, through a private placement under Rule 144A
     under the Securities Act of 1933, as amended, $150 million aggregate
     principal amount of their 12% Senior Notes due 2008 (the "Notes"),
     which closed on July 16, 1998. Interest on the Notes will be payable
     semi-annually in arrears on January 15 and July 15 of each year,
     commencing on January 15, 1999, at the rate of 12% per annum.  The net
     proceeds from the offering were initially placed in a segregated escrow
     account and will be released only in accordance with the provisions of an
     escrow agreement.  Upon consummation of the Combination, (i) the proceeds
     in such escrow account will be released to CapRock, (ii)
     Telecommunications and the Partnership will no longer be co-obligors
     under the Notes, and (iii) IWL will be released from its obligations in
     connection with the special offer to purchase.  If the Combination is not
     consummated by August 31, 1998, CapRock, Telecommunications, and the
     Partnership will be required to offer to purchase the Notes (the "Special
     Offer to Purchase") at a price equal to 101% of the principal amount
     thereof, plus accrued and unpaid interest, if any, to the date of such
     repurchase.  To the extent the amounts held in the escrow account are
     insufficient to repurchase all tendered Notes, each of CapRock,
     Telecommunications, the Partnership, and IWL (as guarantor) shall be
     jointly and severally liable to fund any such deficiency (with an
     estimated contingent liability of not more than approximately $7.0
     million).  There can be no assurance that CapRock, Telecommunications,
     the Partnership and IWL will have sufficient funds available at the time
     of such offer to purchase to repay all Notes tendered.

                                     7
<PAGE>

ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
          RESULTS OF OPERATIONS

     The following discussion and analysis should be read in conjunction with
the financial statements and footnotes of the Partnership for the fiscal year
ended December 31, 1997, which were included in the Registration Statement
filed on Form S-4 by CapRock in July 1998.

The Partnership believes that all necessary adjustments (consisting only of
normal recurring adjustments) have been included in the amounts stated below
to present fairly the following quarterly information.  Accounting
measurements at interim dates inherently involve greater reliance on
estimates than at year-end. Quarterly operating results have varied
significantly in the past and can be expected to vary in the future.  Results
of operations for any particular quarter are not necessarily indicative of
results of operations for a full year.

Forward Looking Information

     Certain information contained herein contains forward-looking statements
(as defined in the Private Securities Litigation Reform Act of 1995)
regarding future events or the future financial performance of the
Partnership, and are subject to a number of risks and other factors which
could cause the actual results of the Partnership to differ materially from
those contained in and anticipated by the forward-looking statements.  Among
such factors are: the completion of the Combination, industry concentration
and the Partnership's dependence on major customers, competition, risks
associated with international operations and entry into new markets,
government regulation, variability in operating results, general business and
economic conditions, customer acceptance of any demand for the Partnership's
new products, the Partnership's overall ability to design, test, and
introduce new products on a timely basis, reliance on third parties and other
telecommunication carriers, the Partnership's ability to manage change,
dependence on key personnel, dependence on information systems and changes in
technology, and possible service interruptions.  The forward-looking
statements contained herein are necessarily dependent upon assumptions,
estimates and data that may be incorrect or imprecise.  Accordingly, any
forward-looking statements included herein do not purport to be predictions
of future events or circumstances and may not be realized.  Forward-looking
statements contained herein include, but are not limited to, forecasts,
projections and statements relating to inflation, future acquisitions and
anticipated capital expenditures.  All forecasts and projections in this
report are based on management's current expectations of the Partnership's
near term results, based on current information available pertaining to the
Partnership, including the aforementioned risk factors. Actual results could
differ materially.

Overview

     The Partnership is a facilities-based provider of broadband
Telecommunications Services to interexchange carriers, other communications
entities and businesses.

     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. As of July 1998, the Partnership
entered into an additional contract totaling approximately $1.3 million
(total contract value is $5.1 million) for the sale of dark fiber between San
Antonio and Laredo, Texas. The Partnership expects to complete the
construction of approximately 590 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 increase 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

                                     8
<PAGE>

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

RESULTS OF OPERATIONS:

COMPARISON OF THREE MONTHS ENDED JUNE 30, 1997 AND 1998

     REVENUE.  Total revenues increased approximately $1.5 million from
$485,000 for the three months ended June 30, 1997 to $2.0 million for the
same period in 1998. The increase in revenue for this period is primarily
attributed to Network Construction Services revenue of approximately $1.4
million.  Telecommunications Services revenues represented 100% of the
revenue for the same period in 1997. As of June 30, 1998, the Partnership has
entered into a contract for the sale of dark fiber for approximately $3.8
million. In July 1998, the customer exercised the option to acquire the IRU
for  additional fiber strands for approximately $1.3 million resulting in a
total contract of $5.1 million. The agreement requires the purchaser to pay
the aggregate contract price, by making installment payments during the
construction period based upon the achievement of certain milestones, with
final payment made at the time of acceptance.

     OPERATING EXPENSES.  The Partnership's principal operating expenses
consist of expenses for Network Construction Costs, SG&A, and depreciation
and amortization. Total operating expenses increased from approximately
$224,000 for the three months ended June 30, 1997 to $464,000 for the same
period in 1998. The 1998 operating expenses include the Costs of Network
Construction Services of approximately $114,000 associated with the contract
for the sale of dark fiber.

     SG&A includes cost of salaries, benefits, occupancy costs, commissions,
sales and marketing expenses and administrative expenses. SG&A increased from
approximately $35,000 for the three months ended June 30, 1997 to $131,000
for the same period in 1998. SG&A expenses will increase as the Partnership
continues to expand its 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 from
approximately $182,000 for the three months ended June 30, 1997 as compared
to $212,000 for the same period in 1998. 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 June 30, 1997, the
Partnership's interest expense was $205,000 as compared to $199,000 for the
same period in 1998.

 INCOME TAXES.  Effective January 1, 1998, the Partnership elected to be
taxed as a corporation and as such has recorded income tax expense of
$501,000 relating to the three months ended June 30, 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.  The Partnership reported net income of $56,000 for the three
months ended June 30, 1997, compared to net income of $800,000 for the three
months ended June 30, 1998 as a result of the factors discussed above.

COMPARISON OF SIX MONTHS ENDED JUNE 30, 1997 AND 1998

     REVENUE.  Total revenues increased approximately $1.8 million from
$845,000, during the six months ended June 30, 1997, as compared to
approximately $2.6 million for the same period in 1998. The increase in
revenue for this period is primarily attributed to Network Construction
Services revenue of approximately $1.4 million.  Telecommunications Services
revenues represented 100% of the revenue for the same period in 1997.  The
Partnership has entered into a contract for the sale of dark fiber for
approximately $3.8 million.  In July 1998, the customer exercised the option
to acquire the IRU for the additional fiber strands for approximately $1.3
million resulting in a total contract of $5.1 million. The agreement requires
the purchaser to pay the aggregate contract price, consisting of installments
during the construction period based upon the achievement of certain
milestones, with final payment made at the time of acceptance.

                                     9
<PAGE>

     OPERATING EXPENSES.  The Partnership's principal operating expenses
consist of expenses for network construction costs, network access expenses,
SG&A, and depreciation and amortization. Total operating expenses increased
from approximately $496,000 during the six months ended June 30, 1997 as to
approximately $727,000 in the corresponding period in 1998. The 1998 operating
expenses include the Costs of Network Construction Services of approximately
$114,000 associated with the contract for the sale of dark fiber.

     SG&A includes the cost of salaries, benefits, occupancy costs,
commissions, sales and marketing expenses and administrative expenses. SG&A
increased from approximately $126,000 in the six months ended June 30, 1997
to approximately $204,000 for the same period in 1998.

     The Partnership's depreciation and amortization expense increased from
approximately $348,000 during the six months ended June 30, 1997 to
approximately $396,000 for the same period in 1998. This increase resulted
primarily from activating segments 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.  For the six months ended June 30, 1997, the
Partnership's net interest expense increased from approximately $370,000 to
approximately $409,000 for the same period in 1998.

     INCOME TAXES.  Effective January 1, 1998, the Partnership elected to be
taxed as a corporation and as such has recorded income tax expense of
$545,000 relating to the six months ended June 30, 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 realized a net loss of approximately
$21,000 in the six months ended June 30, 1997, as compared to net income of
approximately $870,000 in the corresponding period of 1998 as a result of the
factors discussed above.

Liquidity and Capital Resources

     The Partnership funded capital expenditures and cash used in operations
with the proceeds from a $10 million long term loan with a bank. 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. As of July 31, 1998, the
Partnership had obtained approximately $5.1 million of contracts for sales 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).

     Total cash expended during the six months ended June 30, 1998 to fund
capital expenditures and repayments of long-term debt to third parties was
approximately $3 million and $717,000, respectively.  Total cash generated
from operations was approximately $3.9 million for the same period.

     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. The Partnership was in
violation of certain covenants requiring maintenance of debt as a percentage
of adjusted net income as of December 31, 1996, 1997 and April 30, 1998, and
was also in technical default of a covenant requiring the lender's consent to
the Combination.  The Partnership has obtained a waiver of these covenant
violations and has obtained the lender's consent to the Combination and has
executed an amendment revising these covenants.  Approximately $8.9 million
was outstanding thereunder at June 30, 1998. The debt will mature on August
31, 1998. CapRock intends to use part of the proceeds from the sale of the
Notes to repay indebtedness owing by the Partnership to the bank. If the
Combination is not consummated by August 31, 1998 (and as a result, the net
proceeds from the issuance of the Notes are not available to CapRock), the
Partnership intends to renegotiate the terms of its loans with the bank. If
such negotiations are not successful, the Partnership will seek additional
sources of financing. No assurance can be given that such financing will be
available or, if available, that the terms will be satisfactory.

                                     10
<PAGE>

New Accounting Pronouncements

     The Partnership 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 Partnership's
consolidated financial position or results of operation because there are no
material differences between net income and comprehensive income in the
Partnership's circumstances.

     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 statements 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 statement 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
operation, financial position or cash flows and any effect will be limited to
the presentation of its disclosures.

     In June 1998, the FASB issued SFAS No. 133, "Accounting for Derivative
Instruments and Hedging Activity" ("SFAS 133") which requires that all
derivatives be recognized in the statement of financial position as either
assets or liabilities and measured at fair value.  In addition, all hedging
relationships must be designated, reassessed and documented pursuant to the
provisions of SFAS No. 133.  SFAS 133 is effective for fiscal years beginning
after June 15, 1999.  The adoption of SFAS 133 will not have an impact on the
Partnership's results of operations, financial position or cash flow.

Contingencies

     The Partnership is not currently a party to any litigation.  However, the
Partnership 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 operation, financial condition or cash flow of the Partnership.

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.

ITEM 3.   QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

     Not applicable.

PART II.  OTHER INFORMATION

Item 6.    Exhibits and Reports on Form 8-K

(a)  Exhibits

     See Item 6(a) (Exhibits) to the Form 10-Q of CapRock Communications
Corp. for the period ended June 30, 1998 of which this document is an exhibit.

(b)  Reports on Form 8-K

     None.

                                     11
<PAGE>
                            CAPROCK FIBER NETWORK, LTD.


     Pursuant to the requirements of the Indenture, the Partnership has duly 
caused this report to be signed on its behalf by the undersigned thereunto 
duly authorized.

                                       CAPROCK FIBER NETWORK, LTD.


Date: August 13, 1998                  By:  CAPROCK SYSTEMS, INC., its general
                                            partner


                                       By:  /s/ JERE W. THOMPSON, JR.
                                            -----------------------------------
                                            Jere W. Thompson, Jr.
                                            President (Duly Authorized Officer
                                            and Principal Financial and Chief
                                            Accounting Officer)

                                     12

<PAGE>

                                       [LOGO]

                                  THE STATE OF TEXAS

                                  SECRETARY OF STATE
    IT IS HEREBY CERTIFIED that the attached is/are true and correct copies
     of the following described document(s) on file in this office:

                           CAPROCK TELECOMMUNICATIONS CORP.
                        FORMERLY: CAPROCK COMMUNICATIONS CORP.
                                   FILE NO. 1180758
<TABLE>
<S>                                                            <C>
ARTICLES OF INCORPORATION                                       JANUARY 30, 1991
ASSUMED NAME CERTIFICATE                                        OCTOBER 25, 1993
CHANGE OF REGISTERED OFFICE AND/OR AGENT                        OCTOBER 25, 1993
FORFEITURE                                                     FEBRUARY 15, 1994
REINSTATEMENT                                                     MARCH 10, 1994
ASSUMED NAME CERTIFICATE                                          APRIL 25, 1994
CHANGE OF REGISTERED OFFICE AND/OR AGENT                            MAY 27, 1994
ARTICLES OF AMENDMENT                                          NOVEMBER 14, 1994
CHANGE OF REGISTERED OFFICE AND/OR AGENT                       NOVEMBER 12, 1996
ARTICLES OF AMENDMENT                                            OCTOBER 2, 1997
</TABLE>

IT IS HEREBY FURTHER CERTIFIED THAT THE RECORDS OF THIS OFFICE REVEAL THE
SUBSEQUENT FILING OF AN AMENDMENT WHICH WAS FILED ON JUNE 18, 1998. A COPY OF 
THE DOCUMENT IS UNAVAILABLE AT THIS TIME BECAUSE IT IS BEING PROCESSED FOR 
PERMANENT RETENTION AS A PUBLIC RECORD.

                         IN TESTIMONY WHEREOF, I HAVE HEREUNTO 
[SEAL OF TEXAS]          SIGNED BY NAME OFFICIALLY AND CAUSED TO BE IMPRESSED
                         HEREON THE SEAL OF STATE AT MY OFFICE IN THE CITY OF
                         AUSTIN, ON JULY 14, 1998



                                              /s/ Alberto R. Gonzales
                                          -----------------------------------
                                                  Alberto R. Gonzales
                                                   Secretary of State

<PAGE>

                              ARTICLES OF INCORPORATION

                                          OF

                             Synergy Telemanagement, Inc.

     The undersigned natural person of the age of eighteen (18) years or 
more, acting as a incorporator of a corporation under the Texas Business 
Corporation Act, hereby adopts the following Articles of Incorporation for 
such corporation:

                                  ARTICLE ONE - NAME

     The name of the corporation is Synergy Telemanagement, Inc.

                                ARTICLE TWO - DURATION

     The period of its duration is perpetual.

                               ARTICLE THREE - PURPOSE

     The purpose or purposes for which this corporation is organized, subject 
to the provisions of Part Four of the Texas Miscellaneous Corporation Law 
Act, are: to buy, sell, lease and deal in 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 FOUR - SHARES

     The aggregate number of shares which the corporation has authority to 
issue is One Hundred Thousand (100,000) shares


                                     (1)
<PAGE>

of One Dollar ($1.00) par value per share. The shares are designated as 
common stock and have identical rights and privileges in every respect.

                     ARTICLE FIVE - NONCUMULATIVE VOTING

     Director(s) shall be elected by majority vote. No shareholder of this
corporation shall have the right to cumulate his, her or its votes.

                    ARTICLE SIX - 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), consisting of money, labor done, or property actually received.

                 ARTICLE SEVEN - REGISTERED OFFICE AND AGENT

     The post office address of the initial registered office of the corporation
and the name of its initial registered agent at such address are:

                       Tim Terrell
                       14565 Tamerisk
                       Farmers Branch, TX 75234

                     ARTICLE EIGHT - INITIAL DIRECTOR(S)

     The number of director(s) constituting the initial Board of Directors is 
three (3) and the name(s) and address(es) of the person(s) who shall serve as 
director(s) until the first

                                     (2)
<PAGE>

annual meeting of the shareholders,  or until a successor or successors are 
elected and qualified are:

     Tim Terrell                 14565 Tamerisk
                                 Farmers Branch, TX 75234

     Tim Rogers                  1208 Thorean Ln.
                                 Allen, TX  75002

     Scott Roberts               2604 Winding Creek
                                 Carrollton, TX  75007


                         ARTICLE NINE - INCORPORATOR

     The name and address of the incorporator is:

                    Dennis L. Baker
                    3636 N. MacArthur Blvd.,
                    Suite 120
                    Irving, TX 75062

     IN WITNESS WHEREOF, I have hereunto set my hand this the 29th day of
January, 1991.

                                                   /s/ Dennis L. Baker
                                                 -------------------------------
                                                 Dennis L. Baker

STATE OF TEXAS        )

COUNTY OF DALLAS      )

     I, the undersigned  Notary Public, do hereby certify that on the 29th 
day of January, 1991, personally appeared Dennis L. Baker, who, being by me 
duly sworn, declared that he is the person who signed the foregoing document 
as incorporator, and that the statements contained therein are true.

                                              /s/ Marla Ruth Carter
[SEAL OF NOTARY]                              ----------------------------------
                                              Notary Public in and for
                                              State of Texas

My Commission Expires:                        Notary's Name Printed:

       7-24-91                                  Marla Ruth Carter
- ----------------------                        ----------------------------------


                                      (3)
<PAGE>

                           ASSUMED NAME CERTIFICATE FOR AN
                         INCORPORATED BUSINESS OR PROFESSION


1.   The assumed name under which the business or professional service is or 
     is to be conducted or rendered is NTS Communications - Dallas.

2.   The name of the incorporated business or profession as stated in its 
     Articles of Incorporation or comparable document is Synergy 
     Telemanagement, Inc., and the charter number or certificate of authority 
     number, if any is 01180758.

3.   The state, country, or other jurisdiction under the laws of which it was
     incorporated is Texas and the address of its registered or similar office
     in that jurisdiction is 17103 Preston Road, Suite 190, Dallas, Texas 
     75248.

4.   The period not to exceed ten years, during which the assumed name will be
     used is Ten Years.

5.   The corporation is a (circle one) BUSINESS CORPORATION, non-profit
     corporation, professional association or other type of corporation, 
     (specify) _________, or other type of incorporated business, professional 
     or other association or legal entity (specify) ________.

6.   The corporation is required to maintain a registered office in Texas, the
     address of the registered office is 17103 Preston Road Suite 190, 
     Dallas, Tx 75248, the name of its registered agent at such address is 
     Timothy Terrell. The address of the principal office (if not the same as
     the registered office) is _____________________________________. 

7.   If the corporation is not required to or does not maintain a registered
     office in Texas, the office address in Texas is N/A; and if the corporation
     is not incorporated, organized or associated under the laws of Texas, 
     the address of its place of business in Texas is N/A and the office 
     address elsewhere is N/A.

8.   The county or counties where business or professional services are being 
     or are to be conducted or rendered under such assumed name are (if 
     applicable, use the designation "all" or "all except") All.

                                   SYNERGY TELEMANAGEMENT, INC.

                               By: /s/ Tim Terrell
                                   ------------------------------
                               Title:  Treasurer
                                     ---------------------------


     Before me on this 6th day of October, 1993, personally appeared Tim 
Terrell the Treasurer of NTS a Corporation and acknowledged to me that 
he/she executed the foregoing certificate for the purposes therein expressed.

                                      /s/ Carolyn Stuart
                                    --------------------------------------------
                                      Notary Public in and for State of Texas


     My Commission Expires:                  Notary's Name Printed:

                                                 CAROLYN STUART
- ---------------------               --------------------------------------------


[SEAL OF NOTARY]

<PAGE>

                       STATEMENT OF CHANGE OF REGISTERED OFFICE
                            OR REGISTERED AGENT OR BOTH BY
                                    A CORPORATION

1.   The name of the corporation is SYNERGY TELEMANAGEMENT, INC.
                                    ----------------------------

     The corporation's charter number is 01180758-0
                                         -----------------------

2.   The address of the registered office as PRESENTLY shown in the records 
     of the Texas secretary of state is: (Please provide street address, 
     city, state and zip code. The address must be in Texas).

               14565 Tamerisk
     --------------------------------------
               Farmers Branch, TX 75234     
     --------------------------------------

3.   A.   The address of the NEW registered office is: (Please 
      --- provide street address, city, state and zip code. The address must 
          be in Texas.)

               17103 Preston Rd., Suite 190
     --------------------------------------
               Dallas, TX  75248                               
     --------------------------------------

OR   B.    The registered office address will not change.
       ---

4.   The name of the registered agent as PRESENTLY shown in the records of the
     Texas secretary of state is TIMOTHY TERRELL.

5.   A.    The name of the NEW registered agent is ___________________________.
       ---

OR   B. XX  The registered agent will not change.
       ---

6.   Following the changes shown above, the address of the registered office and
     the address of the office of the registered agent will continue to be
     identical, as required by law.

7.   The changes shown above were authorized by:

                       (Profit corporations may select A or B)
                   (Non-Profit corporations may select A, B, or C)

     A.    The board of directors; OR
       ---
     B. XX An officer of the corporation so authorized by the board of 
       --- directors; OR
     C.---The members of the corporation in whom management 
          of the corporation is vested pursuant to article 2.14C of the 
          Texas Non-Profit Corporation Act.

                                    /s/ TIMOTHY W. ROGERS
                              _________________________________
                                   An Authorized Officer

        Please submit this form IN DUPLICATE with the appropriate filing fee.
             PROFIT corporations: $15.00; NON-PROFIT corporations: $5.00

<PAGE>

                                  SECRETARY OF STATE
                                     AUSTIN, TEXAS

     DETERMINATION OF FORFEITURE PURSUANT TO SECTION 171.309, TEXAS TAX CODE  
     ANNOTATED

     CAME TO BE CONSIDERED ON THE DATE SHOWN HEREON, FORFEITURE OF THE CHARTER 
     OR CERTIFICATE OF AUTHORITY OF THE FOLLOWING CORPORATION; THE SECRETARY 
     OF STATE FINDS AND DETERMINES THE FOLLOWING:

                                   CORPORATION NAME

SYNERGY TELEMANAGEMENT, INC.

                                                 CERTIFICATE/CHARTER
     CHARTER NO.-TYPE   [ILLEGIBLE] FORFEITED         FORFEITED
        1180758-0             08/16/1993              02/15/1994

     THAT THE COMPTROLLER OF PUBLIC ACCOUNTS HAS NOTIFIED THIS OFFICE THAT SAID
     CORPORATION HAS FAILED TO FILE A CURRENT YEAR FRANCHISE TAX REPORT TO
     ESTABLISH THE EXISTENCE OF ASSETS FROM WHICH A JUDGEMENT FOR THE FRANCHISE
     TAXES, PENALTIES AND COURT COSTS MAY BE SATISFIED.
     THAT THE COMPTROLLER OF PUBLIC ACCOUNTS HAS FURTHER STATED THAT THE SAID
     CORPORATION HAS FAILED OR REFUSED TO REVIVE ITS RIGHT TO DO BUSINESS.

     IT IS THEREFORE ORDERED THAT THE CHARTER OR CERTIFICATE OF AUTHORITY OF 
     THE ABOVE NAMED CORPORATION BE AND THE SAME IS HEREBY FORFEITED WITHOUT 
     JUDICIAL ASCERTAINMENT AND MADE NULL AND VOID, AND THAT THE PROPER ENTRY 
     BE MADE UPON THE PERMANENT FILES AND RECORDS OF SUCH CORPORATION TO SHOW 
     SUCH FORFEITURE AS OF THE DATE HEREOF.

<PAGE>

                          APPLICATION FOR REINSTATEMENT AND
                    REQUEST TO SET ASIDE REVOCATION OR FORFEITURE

Name of organization     Synergy Telemanagement, Inc.
                     -----------------------------------

File No.    01180758       Taxpayer Id. No.  1-75-2361414-1
        ------------------                  ----------------

     WHEREAS, the organization named above was forfeited or the certificate of
     authority for the organization revoked on    02-15-94        for:
                                               --------------
(check one)

     1.         failure to maintain a registered agent, or
        ------

     2.         failure to pay state franchise tax, or
        ------

     3.    X    (other) Franchise Tax Report not filed
        ------- Public Information Report not filed

WHEREAS, the organization has corrected the default noted above 
     and has paid all fees, taxes, and penalties due;

NOW THEREFORE, the organization hereby applies for reinstatement of its articles
     or certificate of authority, and requests that the secretary of state set 
     aside the forfeiture of revocation of its articles or certificate of 
     authority.

                              By:  /s/ Timothy W. Rogers       Pres.
                                  -----------------------------------------
                                       (signature)           (title)

     [FRANCHISE TAXES PAID THRU 05/16/94]

     INSTRUCTIONS FOR FILING APPLICATION FOR REINSTATEMENT

1.   CORPORATIONS - An application for reinstatement by a corporation 
     forfeited for failure to pay state franchise tax must be signed by an 
     officer, director or shareholder of the corporation. All other 
     applications must be signed by an officer or director of the corporation. 
     LIMITED LIABILITY COMPANIES -  An application for reinstatement for a 
     limited liability company must be signed  by a manager or member of the 
     limited liability company.

     PRIOR TO SIGNING, PLEASE READ THE STATEMENTS ON THIS FORM CAREFULLY. A 
     PERSON COMMITS AN OFFENSE UNDER THE TEXAS BUSINESS CORPORATION ACT, THE 
     TEXAS LIMITED LIABILITY COMPANY ACT OR THE TEXAS NON-PROFIT CORPORATION 
     ACT IF THE PERSON SIGNS A DOCUMENT THE PERSON KNOWS IS FALSE IN ANY 
     MATERIAL RESPECT WITH THE INTENT THAT THE DOCUMENT BE DELIVERED TO THE 
     SECRETARY OF STATE FOR FILING. THE OFFENSE IS A CLASS A MISDEMEANOR.

2.   Submit two copies of the application.

3.   The filing fee for an application for reinstatement of a corporation
     following a tax forfeiture is $75.00. The filing fee for reinstatement of 
     a corporation following a non-tax forfeiture is $50.00. The filing fee for
     a Texas limited liability company is $10.00. The filing fee for a foreign
     limited liability company is $50.00.

     Non-profit corporations are assessed a filing fee of $25.00 for non-tax
     reinstatements.  No fee is required for non- profit corporations forfeited
     for tax reasons.

<PAGE>

[SEAL]                       ASSUMED NAME CERTIFICATE

1.   The name of the corporation, limited liability company, limited 
     partnership, or registered limited liability partnership as stated in 
     its articles of incorporation, articles of organization, certificate of 
     limited partnership, application or comparable document is 
     Synergy Telemanagement, Inc. .

2.   The assumed name under which the business or professional service is or 
     is to be conducted or rendered is Caprock Communications, Inc. 

3.   The state, country, or other jurisdiction under the laws of which it was
     incorporated, organized or associated is Texas    , and the 
     address of its registered or similar office in that jurisdiction is 
     17103 Preston Rd.  #190, Lock Box 121, Dallas, Tx 75248.

4.   The period, not to exceed 10 years, during which the assumed name will be
     used is 10 yrs.

5.   The entity is a (circle one) BUSINESS CORPORATION, non-profit corporation,
     professional corporation, professional association, limited liability
     company, limited partnership, registered limited liability partnership or
     some other type of incorporated business, professional or other 
     association (specify)

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

6.   If the entity is required to maintain a registered office in Texas, the
     address of the registered office is 17103 Preston Rd.  #190, Lock Box 121
     Dallas, Tx.  75248  and the name of its registered agent at such address 
     is Timothy W. Rogers. The address of the principal office  (if not the
     same as the registered office) is Same.

7.   If the entity is not required to or does not maintain a registered office 
     in Texas, the office address in Texas is N/A and if the entity is 
     not incorporated, organized or associated under the laws of Texas, the 
     address of its place of business in Texas is  ______________________  and
     the office address elsewhere is ____________.

8.   The county or counties where business or professional services are being or
     are to be conducted or rendered under such assumed name are (if applicable,
     use the designation "ALL" or "ALL EXCEPT"):
          All   .

        (Certificate must be executed and notarized on the back of this form.)

<PAGE>
                                      /s/ TIMOTHY W. ROGERS
                                 -------------------------------------------
                                 SIGNATURE OF OFFICER, GENERAL PARTNER, 
                                 MANAGER, REPRESENTATIVE OR ATTORNEY-IN-FACT 
                                 OF THE ENTITY

BEFORE ME ON THIE 21  DAY OF  APRIL, 1994, PERSONALLY APPEARED 
TIMOTHY W. ROGERS  AND ACKNOWLEDGED TO ME THAT  _____  HE
EXECUTED THE FOREGOING CERTIFICATE FOR THE PURPOSES THEREIN EXPRESSED.

                                       /s/ CAROLYN STUART
[NOTARY SEAL]                    --------------------------------------------
                                   Notary Public, State of Texas

             INSTRUCTIONS FOR FILING ASSUMED NAME CERTIFICATE

1.  A corporation, limited liability company, limited partnership or 
    registered limited liability partnership, which regularly conducts 
    business or renders a professional service in this state under a name 
    other than the name contained in its articles of incorporation, articles 
    of organization, certificate of limited partnership or application, must 
    file an assumed name certificate with the secretary of state and with the 
    appropriate county clerk in accordance with section 36.11 of the Texas 
    Business and Commerce Code.

2.  The information provided in paragraph 6 as regards the registered agent 
    and registered office address in Texas must match the information on file 
    in this office. To verify the information on file with this office, you 
    may contact our corporate information unit at (512) 463-5555.  Forms to 
    change the registered agent/office are available from this office should 
    you require to update this information.

3.  A certificate executed and acknowledged by an attorney-in-fact shall 
    include a statement that the attorney-in-fact has been duly authorized in 
    writing by his principal to execute and acknowledge the same.

4.  For purposes of filing with the secretary of state, the assumed name 
    registrant should submit an originally executed assumed name certificate 
    accompanied by the filing fee of $25 to the Secretary of State, Statutory 
    Filings Division, Corporations Section, P.O. Box 13697, Austin, Texas 
    78711-3697.  The phone number is (512) 463-5582, TDD: (800) 735-2989,
    FAX: (512) 463-5709.

5.  All assumed name certificates to be filed with the county clerk must be 
    forwarded directly to the appropriate county clerk by the assumed name 
    registrant.

6.  Whenever an event occurs that causes the information in the assumed name 
    certificate to become materially misleading (eg. change of registered 
    agent/office or a change of name), a new certificate must be filed within 60
    days after the occurrence of the events which necessitate the filing.

7.  A registrant that ceases to transact business or render professional 
    services under an assumed name for which a certificate has been filed may 
    file an abandonment of use pursuant to the Texas Business and Commerce 
    Code, Section 36.14. Forms for this purposes are available from this 
    office.

<PAGE>

[SEAL]                 STATEMENT OF CHANGE OF REGISTERED OFFICE
                            OR REGISTERED AGENT OR BOTH BY
                                    A CORPORATION

1.   The name of the corporation is Synergy Telemanagement, Inc.
                                   ---------------------------------------------
     The corporation's charter number is  01180758-0 

2.   The address of the registered office as PRESENTLY shown in the records of 
     the  Texas secretary of state is: (Please provide street address, city, 
     state and zip code. The address must be in Texas).

     17103 Preston Road Suite 190, Lock Box 121
     ---------------------------------------------------------------------------
     Dallas, Texas  75249
     ---------------------------------------------------------------------------

3.   A.     The address of the NEW registered office is: (Please 
       ----    provide street address, city, state and zip code. The address 
               must be in Texas.)
     ---------------------------------------------------------------------------

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

OR   B  X   The registered office address will not change.
       ----

4.   The name of the registered agent as PRESENTLY shown in the records of the
Texas secretary of state is Tim Terrell
                           -----------------------------------------------------

5.   A. X   The name of the NEW registered agent is  Tim Rogers 
       ----                                        -----------------------------

OR   B.     The registered agent will not change.
       ----

6.   Following the changes shown above, the address of the registered office and
     the address of the office of the registered agent will continue to be
     identical, as required by law.

7.   The changes shown above were authorized by:
                        (Profit corporations may select A or B)
                   (Non-Profit corporations may select A, B, or C)

     A.        The board of directors; OR
        ----
     B. X      An officer of the corporation so authorized by the board of
        ----   directors; OR
     C.        The members of the corporation in whom management of the
        ----   corporation is vested pursuant to article 2.14C of the Texas 
               Non-Profit Corporation Act.

                                 /s/ Tim Rogers
                              ----------------------------------------
                                 An Authorized Officer

        Please submit this form IN DUPLICATE with the appropriate filing fee.
             PROFIT corporations: $15.00; NON-PROFIT corporations: $5.00

<PAGE>

                               ARTICLES OF AMENDMENT TO
                             ARTICLES OF INCORPORATION OF
                            SYNERGY TELEMANAGEMENT, INC.                 

     Pursuant to the provisions or Article 4.04 of the Texas Business 
Corporation Act, the undersigned corporation adopts the following Articles of 
Amendment to the Articles of Incorporation of Synergy Telemanagement, Inc.

                                     ARTICLE ONE

     The name of the corporation is Synergy Telemanagement, Inc.

                                     ARTICLE TWO

     The following amendment to the Articles of Incorporation was adopted by 
the shareholders of the corporation on October 26, 1994. The amendment alters 
Article One of the Original Articles of Incorporation to read as follows:

     "The name of the corporation is CapRock Communications Corp."

                                    ARTICLE THREE

     The number of shares of common stock of the corporation outstanding at 
the time of the adoption was 3,996, and the number of shares entitled to vote 
on the amendment was 3,996.

                                     ARTICLE FOUR

     The number of shares that voted for the amendment was 3,996; and the 
number of shares that voted against the amendment was 0.

     Dated: October 26, 1994.

                         SYNERGY TELEMANAGEMENT INC.


                         By:   /s/ Jere W. Thompson, Jr.
                             ---------------------------------
                              Jere W. Thompson, President

<PAGE>

SECRETARY OF STATE
CORPORATIONS SECTION                   [SEAL]       
P.O. Box 13697
Austin, Texas 78711-3697

                     STATEMENT OF CHANGE OF REGISTERED OFFICE OR
                      REGISTERED AGENT OR BOTH BY A CORPORATION,
                   LIMITED LIABILITY COMPANY OR LIMITED PARTNERSHIP

1.   The name of the entity is  CapRock Communications Corporation
                              --------------------------------------------------

     The entity's charter/certificate of authority/file number is 1180758-00.

2.   The registered office address as PRESENTLY shown in the records of the
     Texas secretary of state is: 17103 Preston Road, Suite 190, Dallas, Texas
                                 -----------------------------------------------
     75252 .
     ---------------------------------------------------------------------------

3.   A  X      The address of the NEW registered office is: (Please provide
       ----    street address, city, state and zip code. The address must be in
               Texas.)
      13455 Noel Road, Suite 1925, LB 46, Dallas, Texas, 75240
     ---------------------------------------------------------------------------
OR   B.        The registered office address will not change.
       ----

4.   The name of the registered agent as PRESENTLY shown in the records of the
     Texas secretary of state is TIM ROGERS .
                                ------------------------------------------------

5.   A.        The name of the NEW registered agent is
       ----                                             ---------------------.
OR   B. X      The registered agent will not change.
       ----

6.   Following the changes shown above, the address of the registered office and
     the address of the office of the registered agent will continue to be
     identical, as required by law.

<TABLE>
<CAPTION>

7.   The changes shown above were authorized by:
   <S>                                               <C>
     Business Corporations may SELECT A OR B           Limited Liability Companies may SELECT D OR E
     Non-Profit Corporations may SELECT A, B, OR C     Limited Partnerships SELECT F

     A.   The board of directors; OR
       --
     B. X An officer of the corporation so authorized by the board of directors; OR
       -- 
     C.   The members of the corporation in whom management of the corporation
       -- is vested pursuant to article 2.14C of the Texas Non-Profit
          Corporation Act.
     D.   Its members
       --
     E.   Its managers
       --
     F.   The limited partnership
       --

</TABLE>

                                   /s/ Tim Rogers
                                ----------------------------------------
                                (Authorized Officer of Corporation) 
                                (Authorized Member or Manager of LLC) 
                                (General Partner of Limited Partnership)

<PAGE>

                             ARTICLES OF AMENDMENT
                       TO ARTICLES OF INCORPORATION OF                 
                         CAPROCK COMMUNICATIONS CORP.

     Pursuant to the provisions of Article 4.04 of the Texas Business 
Corporation Act, the undersigned corporation adopts the following Articles of 
Amendment to its Articles of Incorporation:

                                  ARTICLE 1

     The name of the Corporation is CapRock Communications Corp.

                                  ARTICLE 2

     The following amendments to the Articles of Incorporation were adopted 
by the shareholders of the corporation as of September 30, 1997;

     1.  This amendment alters ARTICLE FOUR of the Articles of Incorporation 
         to read as follows:

                            "ARTICLES FOUR -- SHARES

         The aggregate number of shares to which the Corporation has 
     authorized to issue is One Hundred Million (100,000,000) shares with no 
     par value.  The shares are designated as Common Stock and have identical 
     rights and privileges in every respect."

     2.  This amendment adds a new ARTICLE TEN to the Articles of 
         Incorporation to read as follows:

         "ARTICLE TEN -- SHAREHOLDER CONSENT ELECTION

         It is hereby provided that, in accordance with Article 9.10A of the 
     Texas Business Corporation Act, any action required to be taken at any 
     annual or special meeting of shareholders, or any action which may be 
     taken at any annual or special

                                                                          Page 1
<PAGE>

     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 3

     This amendment does not change the existing amount of stated capital of 
the corporation. Pursuant to this amendment all holders of shares of Common 
Stock having a par value of $1.00 shall have their shares exchanged, 
effective as of the filing of this amendment, for an equal number of shares 
of Common Stock having no par value.

                              ARTICLE 4

     The number of shares of the Corporation outstanding at the time of the 
adoption was 4297, all of which were of one class; and the number of shares 
entitled to vote on this amendment was 4297.

                              ARTICLE 5

     The holders of all of the shares outstanding and entitled to vote on 
this amendment have signed a consent in writing pursuant to Article 9.10 
adopting this amendment and any written notice required by Article 9.10 has 
been given.

DATED:       September 30          , 1997.
      -----------------------------


                                      CAPROCK COMMUNICATIONS CORP.

                                      By:    /s/  Jere Thompson, Jr.
                                         -----------------------------

                                           Its      President
                                              ------------------------

                                                                          Page 2

<PAGE>

                                  THE STATE OF TEXAS

                                  SECRETARY OF STATE
                               CERTIFICATE OF AMENDMENT
                                          OF

                           CAPROCK TELECOMMUNICATIONS CORP.
                        FORMERLY: CAPROCK COMMUNICATIONS CORP.
                                CHARTER NO. 1180758-0

The undersigned, as Secretary of State of Texas, hereby certifies that the 
attached Articles of Amendment for the above named entity have been received 
in this office and are found to conform to law.

ACCORDINGLY the undersigned, as Secretary of State, and by virtue of the 
authority vested in the Secretary by law, hereby issues this Certificate of 
Amendment.

Dated:         June 18, 1998

Effective:     June 18, 1998

                                  /s/ Alberto R. Gonzales
                                -------------------------------------
                                  Alberto R. Gonzales
                                  Secretary of State

[SEAL]

<PAGE>

                                THE STATE OF TEXAS
                                SECRETARY OF STATE

                           CERTIFICATE OF RESERVATION OF
                                          
                                 CORPORATE NAME OF
                                          
                       CAPROCK TELECOMMUNICATIONS CORPORATION

     THE UNDERSIGNED, AS SECRETARY OF STATE OF THE STATE OF TEXAS,
HEREBY CERTIFIES THAT THE ABOVE CORPORATE NAME HAS BEEN RESERVED IN THIS OFFICE
FOR THE EXCLUSIVE USE OF

                            MUNSCH HARDT KOPF HARR & DINAN

FOR A PERIOD OF ONE HUNDRED TWENTY DAYS, PURSUANT TO THE PROVISIONS OF 
ARTICLE 2.06 OF THE TEXAS BUSINESS CORPORATION ACT.

     THIS NAME RESERVATION DOES NOT AUTHORIZE THE USE OF A NAME IN THIS STATE 
IN VIOLATION OF THE RIGHTS OF ANOTHER UNDER THE FEDERAL TRADEMARK ACT OF 
1946, THE TEXAS TRADEMARK LAW, THE ASSUMED BUSINESS OR PROFESSIONAL NAME ACT 
OR THE COMMON LAW.

DATED APR. 27, 1998


[SEAL]                          /s/ Alberto R Gonzales
                               ----------------------------------------------
                                  Alberto R Gonzales, Secretary of State

<PAGE>

                          ARTICLES OF AMENDMENT
                    TO THE ARTICLES OF INCORPORATION
                                  OF                                     
                      CAPROCK COMMUNICATIONS 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 CapRock Communications Corp.

                              ARTICLE TWO

     The following amendment to the Articles of Incorporation was adopted by 
the shareholders of the Corporation on May 1, 1998, so as to amend the name 
of the Corporation. Article 1 of the Articles of Incorporation is hereby 
amended to read in its entirety as follows;

     "The name of the Corporation is CapRock Telecommunications Corp."

                              ARTICLE THREE

     The number of shares of the Corporation outstanding at the time of such 
adoption was 10,398,954, and the number of shares entitled to vote thereon 
was 10,398,954.

                               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.

<PAGE>

Dated May 31 , 1998


                         CAPROCK COMMUNICATIONS CORP.
                         a Texas Corporation

                         By:      /s/ Jere Thompson
                              ---------------------------------------
                         Its:    Chief Executive Financial Officer
                              ---------------------------------------


                                       2


<PAGE>
                                       
                                    BY-LAWS

                                       OF

                          Synergy Telemanagement, Inc.
                               ("The Corporation")

                         *       *      *      *      * 

                                TABLE OF CONTENTS


ARTICLE I.     OFFICES

      1.  Principal Office
      2.  Other Offices


ARTICLE II.    MEETINGS OF SHAREHOLDERS 

      1.  Place of Meetings
      2.  Annual Meetings
      3.  List of Shareholders
      4.  Special Meetings
      5.  Notice
      6.  Quorum
      7.  Majority Vote
      8.  Voting Procedure
      9.  Action Without Meeting; Telephone Meeting


ARTICLE III.   DIRECTORS

      1.  Management
      2.  Number; Election
      3.  Change in Number
      4.  Removal and Vacancies
      5.  Election of Directors
      6.  Place of Meetings
      7.  First Meetings
      8.  Regular Meetings
      9.  Special Meetings
     10.  Quorum
     11.  Action Without Meeting; Telephone Meeting
     12.  Chairman of the Board
     13.  Compensation
     14.  Executive Committee
     15.  Other Committees


ARTICLE IV.    NOTICES

      1.  Method
      2.  Waiver

<PAGE>

     ARTICLE V.     OFFICERS


      1.  Officers
      2.  Election
      3.  Compensation
      4.  Removal and Vacancies
      5.  President
      6.  Vice President
      7.  Secretary
      8.  Assistant Secretaries
      9.  Treasurer
     10.  Assistant Treasurers



ARTICLE VI.    CERTIFICATES REPRESENTING SHARES

      1.  Certificates
      2.  Lost Certificates
      3.  Transfer of Shares
      4.  Registered Shareholders


ARTICLE VII.   GENERAL PROVISIONS

      1.  Dividends
      2.  Reserves
      3.  Checks
      4.  Fiscal Year
      5.  Seal
      6.  Indemnification
      7.  Transactions With Directors and Officers
      8.  Amendments
      9.  Table of Contents; Headings

<PAGE>
                                       
                                    BY-LAWS

                                       OF

                          Synergy Telemanagement, Inc.
                               ("The Corporation")

                        *       *      *       *       *

                                   ARTICLE 1.
                                       
                                    OFFICES

     Section 1.  PRINCIPAL OFFICE.  The principal business office of the 
Corporation shall be at 14565 Tamerisk, Flower Mound, Texas 75234.

     Section 2.  OTHER OFFICES.  The corporation may also have offices at 
such other places, both within and without the State of Texas, as a Board of 
Directors may from time to time determine or the business of the Corporation 
may require.
                                       

                                  ARTICLE II.

                           MEETINGS OF SHAREHOLDERS

     Section   1.  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.  Provided however, that no meeting of shareholders 
shall 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.

     Section 2.  ANNUAL MEETING.  An annual meeting of the shareholders, 
commencing with the year 1992, shall be held on the first monday in February 
of each year; but if such date shall fall on a legal holiday, then on the 
next regular business day following, at 10:00 a.m., at which they shall elect 
a Board of Directors, and transact such other business as may properly be 
brought before the meeting.

     Section 3.  LIST OF SHAREHOLDERS.  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 alphabetic order with the address of and 
the number of voting shares held by each, shall be prepared by the officer or 
agent having charge of the stock transfer books.  Such list, for a period of 
ten (10) days prior to such meeting, shall be subject to inspection by any 
shareholder at any time during usual business hours.  Such list shall be 
produced and kept open at 

<PAGE>

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.

     Section 4.  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 By-Laws, may be called by the 
President, the Board of Directors, or the holders of not less than fifty 
percent (50%) of all shares entitled to vote at the meetings shall be 
confined to the purposes stated in the notice of the meeting.

     Section 5.  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 
(10) nor more than fifty (50) days before the date of the meeting, either 
personally or by mail, by or at the direction of the President, the 
Secretary, or the officer or person calling the meeting, to each shareholder 
of record entitled to vote at the meeting.

     Section 6.  QUORUM.  The holders of a majority of the shares issued and 
outstanding and entitled to vote thereat, present in person or represented by 
proxy, shall be requisite and shall constitute a quorum at all meetings of 
the shareholders for the transaction of business except as otherwise provided 
by statute, by the Articles of Incorporation or by these By-Laws.  If, 
however, such quorum shall not be present or represented at any meeting of 
the shareholders, the shareholders entitled to vote thereat, present in 
person or represented by proxy, shall have the power to adjourn the meeting, 
until a quorum shall be present or represented. At such adjourned meeting at 
which a quorum shall be present or represented, any business may be 
transacted which might have been transacted at the meeting as originally 
notified.

     Section 7.  MAJORITY VOTE.  When a quorum is present at any meeting, the 
vote of the holders of a majority of the shares having voting power present 
in person or represented by proxy shall decide any question brought before 
such meeting, unless the question is one upon which by statute or by the 
Articles of Incorporation or these By-Laws, a different vote is required, in 
which case such express provision shall govern and control the decision of 
such question.

     Section 8.  VOTING PROCEDURE.  Each outstanding share, regardless of 
class, shall be entitled to one 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 in person, by proxy appointed by 
an instrument in 

<PAGE>

writing subscribed by such shareholder, or by his duly authorized 
attorney-in-fact, and bearing a date not more than eleven (11) months prior 
to said meeting, unless said instrument provides for a longer period.  Each 
proxy shall be revocable unless expressly provided therein to by irrevocable 
and unless otherwise made irrevocable by law.  Such proxy shall be filed with 
the Secretary of the Corporation prior to or at the time of the meeting.  The 
Board of Directors may fix in advance a record date to be not less than ten 
(10) nor more then fifty (50) days prior to such meeting.  In the absence of 
any action by the Board of Directors, the date upon which the notice of the 
meeting is mailed shall be the record date.

     Section 9. ACTION WITHOUT MEETING; TELEPHONE MEETINGS.  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. 
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 1.  MANAGEMENT.  The business and affairs of the Corporation 
shall be managed by its Board of Directors who 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 By-Laws, directed or 
required to be exercised or done by the shareholders.  The Board of Directors 
shall keep regular minutes of its proceedings.

     Section 2.  NUMBER; ELECTION.  The Board of Directors shall consist of 
Three (3) director(s), who need not be shareholder(s) or resident(s) of the 
State of Texas.  The Directors shall be elected at the annual meeting of the 
shareholders, except as hereinafter provided, and each Director elected shall 
hold office until his successor shall be elected and shall qualify.

<PAGE>

     Section 3.  CHANGE IN NUMBER.  The number of Directors may be increased 
or decreased from time to time by amendment to these By-Laws but no decrease 
shall have the effect of shortening the term of any incumbent Director.  Any 
Directorship to be filled by reason of an increase in the number of Directors 
shall be filled by election at an annual meeting or at a special meeting of 
shareholders called for that purpose.

     Section 4.  REMOVAL AND VACANCIES.  Any Director may be removed either 
for or without cause, at any annual or special meeting of shareholders by the 
affirmative vote of a majority in number of shares of the shareholders 
present in person or by proxy at such meeting and entitled to vote for the 
election of such Director, if notice of the intention to act upon such matter 
shall have been given in the notice calling such meetings.  If any vacancies 
occur in the Board of Directors caused by death, resignation, retirement, 
disqualification or removal from office of any Director or otherwise, a 
majority of the Directors then in office, though less than a quorum, may 
choose a successor or successors, or a successor or successors may be chosen 
at a special meeting of the shareholders called for that purpose; and each 
successor Director so chosen shall be elected for the unexpired term of this 
predecessor in office.

     Section 5.  ELECTION OF DIRECTORS.  At every election of Directors, each 
shareholder shall have the right to vote in person or by proxy in the number 
of voting shares owned by him for as many persons as there are Directors to 
be elected and for whose election he has a right to vote.  Cumulative voting 
shall be prohibited.

     Section 6.  PLACE OF MEETINGS.  The Directors of the Corporation may 
hold their meetings, both regular and special, either within or without the 
State of Texas. Provided however, that no meeting of Directors shall 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.

     Section 7.  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 8.  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.

     Section 9.  SPECIAL MEETINGS.  Special meetings of the Board of 
Directors may be called by the President on three 

<PAGE>

(3) days notice to each Director, either personally or by mail or by 
telegram.  Special meetings may be called in like manner and on like notice 
on the written request of a majority of the Directors.  Except as may be 
otherwise expressly provided by statute, or by the Articles of Incorporation, 
or by these By-Laws, neither the business to be transacted at, nor the 
purpose of, any special meeting need be specified in a notice or waiver of 
notice.

     Section 10.  QUORUM.  At all meetings of the Board of Directors, the 
presence of a majority of the directors shall be necessary and sufficient to 
constitute a quorum for the transaction of business, and 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, except as may be otherwise 
specifically provided by statute, or by the Articles of Incorporation or by 
these By-Laws.  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 11.  ACTION WITHOUT MEETING; TELEPHONE MEETINGS. Any action 
required or permitted to be taken at a meeting of the Board of Directors or 
members of any committee designated by the Board, may be taken without a 
meeting if a consent in writing, setting forth the action so taken, is signed 
by all of 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 
the meeting.  Subject to applicable notice provisions and unless otherwise 
restricted by the Articles of Incorporation, members 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.

     Section 12.  CHAIRMAN OF THE BOARD.  The Board of Directors may elect a 
chairman of the Board to preside at their meetings and perform such other 
duties as the Board may from time to time assign to him.

     Section 13.  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 

<PAGE>

committee designated by the Board may, by resolution of the Board of 
Directors, be allowed like compensation for attending committee meetings.

     Section 14. EXECUTIVE COMMITTEE.   The Board of Directors may, by 
resolution adopted by a majority of the whole Board, designate an Executive 
Committee, to consist of two or more of the Directors of the Corporation.  
The Executive Committee, 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 statute, or by the 
Articles of Incorporation, and shall have power to authorize the seal of the 
Corporation to be affixed to all papers which may require it.  Any member of 
the Executive Committee may be removed by the Board of Directors by the 
affirmative vote of a majority of the Board, whenever in its judgment the 
best interests of the Corporation will be served thereby.  The Executive 
Committee shall keep regular minutes of its proceedings and report the same 
to the Board when required.

     Section 15.  OTHER COMMITTEES.  The Board of Directors may, by 
resolution adopted by a majority of the whole Board, may designate other 
committees, other than an Executive Committee, to the extent provided in such 
resolution.
                                       

                                  ARTICLE IV.

                                    NOTICES

     Section 1.  METHOD.  Whenever by statutes, the Articles of 
Incorporation, or these By-Laws, 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, by mail, postage prepaid, addressed to such 
Director or shareholder at such address as appears on the books 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 mails as aforesaid.

     Section 2.  WAIVER.  Whenever any notice is required to be given to any 
shareholder or Director of the Corporation by statute, the Articles of 
Incorporation, or these By-Laws, 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 


<PAGE>

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 1.  OFFICERS.  The officers of the Corporation shall be elected 
by the Directors and shall be a President, a Vice President, a Secretary, and 
a Treasurer.  The Board of Directors May also choose a Chairman of the Board, 
additional Vice Presidents and one or more Assistant Secretaries and 
Assistant Treasurers.  Any two or more offices such as President and 
Secretary may be held by the same person.

     Section 2.  ELECTION.  The Board of Directors at its first meeting after 
each annual meeting of shareholders shall choose a President, one or more 
Vice Presidents, a Secretary, and a Treasurer, none of whom need be a member 
of the Board, 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.

     Section 3.  COMPENSATION.  The compensation of all officers and agents 
of the Corporation shall be fixed by the Board of Directors.

     Section 4.  REMOVAL AND VACANCIES.  Each officer of the corporation 
shall hold office until his successor is chosen and qualified in his stead or 
until his death or until his resignation or removal from office.  Any officer 
or agent elected or appointed by the Board of Directors may be removed either 
for or without cause by a majority of the Board members represented at a 
meeting of the Board 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.  PRESIDENT.  The President shall be the chief executive officer
of the corporation; he shall preside at all meetings of the shareholders and the
Board of Directors unless the Board shall choose to elect a chairman of the
Board, in which event the President shall preside at Board meetings in the
absence of the Board Chairman.  The President shall have general and active
management of the


<PAGE>

orders and resolutions of the Board and shall be responsible to see that such 
orders and resolutions are carried into effect, as the Directors shall 
prescribe.

     Section 6.  VICE PRESIDENT.  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 President may from time to time delegate to him.

     Section 7.  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.  He 
shall give, or cause to be given, notice of all meetings of the shareholders 
and special meetings of the Board of Directors, and shall perform such other 
duties as may be prescribed by the Board of Directors or President, under 
whose supervision he shall be.  He shall keep in safe custody the seal of the 
corporation and, when authorized by the Board, affix the same to any 
instrument requiring it, and, when so affixed, it shall be attested by his 
signature or by the signature of the Treasurer or an Assistant Secretary.

     Section 8.  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 President may from time to time 
delegate.

     Section 9.  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. He 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 President and Directors, at the regular meetings of the Board, or 
whenever they may require it, an account of all his 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, he 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 his office and for the 
restoration to the corporation, in case of his death, resignation, retirement 
or removal from office, of all books, papers, vouchers, money, and other 
property of whatever kind in his possession or under his control belonging to 
the corporation.

<PAGE>

     Section 10.  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 1.  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 shares are without par value.  They shall be 
signed by the President or a Vice President and 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.

     Section 2.  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 his 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 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 3.  TRANSFER OF SHARES.  Shares of stock shall be transferable 
only on the books of the corporation by the holder thereof in person or by 
his 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 of the corporation to issue a new certificate to the person 
entitled thereto, cancel the old certificate and record the transaction upon 
its books.


<PAGE>

     Section 4.  REGISTERED SHAREHOLDERS.  The corporation shall be entitled 
to treat the holder of record of any share or shares of stock as the holder 
in fact thereof, and, accordingly, shall not be bound to recognize any 
equitable or other claim or interest in such share or shares on the part of 
any other person, whether or not it shall have express or other notice 
thereof, except as otherwise provided by law.


                                     ARTICLE VII.

                                  GENERAL PROVISIONS

     Section 1.  DIVIDENDS.  Dividends upon the outstanding shares of the 
corporation, subject to the provisions of the Articles of Incorporation, if 
any, may be declared by the Board of Directors at any regular or special 
meeting. Dividends 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. The Board of Directors may fix in advance a record date for 
the purpose of determining shareholders entitled to receive payment of any 
dividend, such record date to be not more than fifty (50) days prior to the 
payment date of such dividend, or the Board of Directors may close the stock 
transfer books for such purpose for a period of not more than fifty (50) days 
prior to the payment date of such dividend.  In the absence of any action by 
the Board of Directors, the date upon which the Board of Directors adopt the 
resolutions declaring such dividend shall be the record date.

     Section 2.  RESERVES.  There may be created by resolution of the Board 
of Directors out of the earned 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 dividends, or to repair 
or maintain any property of the corporation, or for such other purposes as 
the Directors shall think beneficial to the corporation, and the Directors 
may modify or abolish any such reserve in the manner in which it was created.

     Section 3.  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 4.  FISCAL YEAR.  The fiscal year of the corporation shall be 
fixed by resolution of the Board of Directors.

     Section 5.  SEAL.  The corporate seal shall have inscribed thereon the 
name of the corporation.  Said seal may be used by causing it or a facsimile 
thereof to be impressed or affixed or reproduced or otherwise.


<PAGE>

     Section 6.  INDEMNIFICATION.  Any person made a party to, or involved 
in, any civil, criminal or administrative action, suit or proceeding by 
reason of the fact that he, his Executor or Administrator is or was a 
director or officer of the Corporation, or of any corporation which he, his 
Executor or Administrator is or was a director or officer of the Corporation, 
or of any corporation which he, his Executor or Administrator, served as such 
at the request of the corporation, shall be indemnified by the Corporation 
against expenses actually and reasonable incurred by or imposed on him in 
connection with, or resulting from the defense of such action, suit or 
proceeding, or in connection with, or resulting from, any appeal therein, 
except with respect to matters as to which it is adjudged in such action, 
suit or proceeding that such officer or director has committed or allowed 
some act or omission (i) otherwise than in good faith in what he considered 
to be the best interests of the corporation, or (ii) without reasonable cause 
to believe that such act or omission was proper and legal.  As used herein, 
the term "expenses" shall include all obligations incurred by such person for 
the payment of money including, without limitation, attorney's fees, 
judgments, awards, fines, penalties, and amounts paid in satisfaction of 
judgment or in settlement of any such action, suit or proceeding.  A 
conviction or judgement (whether based on a plea of guilty or NOLO CONTENDERE 
or its equivalent, or after trial), shall not by itself be deemed an 
adjudication that such director or officer has committed or allowed some act 
or omission as hereinabove provided.  Determination of the right to such 
indemnification and the amount thereof may be made, at the option of the 
person to be indemnified, by any of the following  procedures: (a) order of 
the court or administrative body or agency having jurisdiction of the action, 
suit or proceeding, (b) resolutions adopted by a majority of a quorum of the 
board of Directors of the corporation without counting in any such majority 
or quorum any directors who have incurred expenses in connection with such 
action, suit or proceeding, (c) resolution adopted by a majority of a quorum 
of the stockholders entitled to vote at any meeting, or (d) order of any 
court having jurisdiction over the corporation.  Any such determination that 
a payment by way of indemnity should be made shall be binding upon the 
corporation.  Such right of indemnification shall not be exclusive of any 
other right which such directors and officers of the corporation, and the 
other persons above mentioned, may have or hereafter acquire and without 
limiting the generality of such statement, they shall be entitled to their 
respective rights of indemnification under any By-Law, agreement, vote of 
stockholders, provision of law or otherwise, as well as their rights under 
this section.  The provisions of this section shall apply to any member of 
any committee appointed by the Board of Directors and the Board of Directors 
shall have power in its discretion (but shall not be required) to indemnify 
any person made a party to, or involved in, any civil, criminal or 
administrative action,

<PAGE>

suit or proceeding by reason of the fact that he, his Executor or 
Administrator, is or was an employee of the corporation or any subsidiary 
thereof, to the same extent that indemnification would be authorized with 
respect to an officer or directors.

     Section 7.  TRANSACTION WITH DIRECTORS AND OFFICERS. No contract or 
other transaction between the corporation and any other corporation and no 
other act of the corporation shall, in the absence of fraud, be invalidated 
or in any way affected by the fact that any of the directors of the 
corporation are pecuniarily or otherwise interested in such contract, 
transaction or other act, or are directors or officers of such other 
corporation.  Any director of the corporation, individually, or any firm or 
association of which any such director may be a member, may be a party to, or 
may be pecuniarily or otherwise interested in, any contract or transaction of 
the corporation, provided that the fact that he individually or such firm or 
association is so interested shall be disclosed or shall have been known to 
the Board of Directors or a majority of such members thereof as shall be 
present at any annual meeting or at any special meeting, called for that 
purpose, of the Board of directors at which action upon any such contract or 
transaction shall be taken; and any director of the corporation who is so 
interested may be counted in determining the existence of quorum at any such 
annual meeting or any such special meeting of the Board of Directors which 
shall authorize any such contract or transaction, and may vote thereat to 
authorize any such contract or transaction with like force and effect as if 
he were not such director or officer of such other corporation or not so 
interested; every director of the corporation being hereby relieved from any 
disability which might otherwise prevent him from carrying out transactions 
with or contracting with the corporation for the benefit of himself or any 
firm, corporation, association, trust or organization in which or with which 
he may be in anywise interested or connected.

     Section 8.  AMENDMENTS.  These By-Laws may be altered, amended, or 
repealed at any meeting of the Board of Directors at which a quorum is 
present or represented, by the affirmative vote of a majority of the 
Directors present at such meeting unless such power is reserved to the 
shareholders by the Articles of Incorporation.

     Section 9.  TABLE OF CONTENTS; HEADINGS.  The Table of Contents and 
headings used in these By-Laws have been inserted for convenience only and do 
not constitute matters to be construed in interpretations.


<PAGE>

                               CERTIFICATE OF SECRETARY

     The undersigned, being the Secretary of the Corporation, hereby 
certifies that the foregoing code of By-Laws was duly adopted by the initial 
director(s) of said corporation effective on February 1, 1991.

     In Witness Whereof, I have signed this certificate as of the 1st day of 
February, 1991.



                               /s/ Timothy M. Terrell
                              ------------------------------
                              Secretary


<PAGE>

                                      AMENDMENT

     Effective the 26th day of October, 1994, the name of the corporation 
changed from Synergy Telemanagement, Inc. to CapRock Communications 
Corporation and its bylaws are hereby to reflect the corporate name change.

                              CAPROCK COMMUNICATIONS CORPORATION

                              By: /s/ Timothy M. Terrell
                                 -------------------------------
                                  Timothy M. Terrell
                                  Secretary

<PAGE>

                                 AMENDMENTS TO BYLAWS

The following amendment was adopted on April 1, 1994 by the shareholders and 
directors of CapRock Communications Corp. (now known as CapRock 
Telecommunications Corp.) (the "Company") to Article II, Section 9 of the 
Bylaws of the Company so that such section reads in its entirety as follows:

          "Section 9. ACTION WITHOUT MEETING. Any action required by statutes 
     to be taken at a meeting of the shareholders may be taken without a 
     meeting, without prior notice, and without a vote, if a consent in 
     writing, setting forth the actions 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. The signed consent, or a signed copy shall be placed in the 
     minute book. Prompt notice of the taking of any action by shareholders 
     without a meeting by less than unanimous consent shall be given to those 
     shareholders who did not consent in writing to the action."

The following amendment was adopted on September 31, 1997 by the shareholders 
and directors of the Company to Article III, Section 2 of the Bylaws of the 
Company so that such section reads in its entirety as follows:

          "Section 2. NUMBER; ELECTION. The Board of Directors shall consist 
     of six (6) directors, who need not be shareholders or residents of the 
     State of Texas. The Directors shall be elected at the annual meeting of 
     the shareholders, except as hereinafter provided, and each Director 
     elected shall hold office until his successor shall be elected and shall 
     qualify."


                                             /s/ Timothy M. Terrell
                                             ------------------------------
                                             Timothy M. Terrell, Secretary

<PAGE>














                             SECOND AMENDED AND RESTATED
                           AGREEMENT OF LIMITED PARTNERSHIP
                                          OF
                             CAPROCK FIBER NETWORK, LTD.









<PAGE>

                                  TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                         PAGE
                                                                         ----
<S>                                                                        <C>
ARTICLE I

DEFINITIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
       1.01    Terms Defined . . . . . . . . . . . . . . . . . . . . . . . .2
       1.02    Number and Gender . . . . . . . . . . . . . . . . . . . . . .5

ARTICLE II

GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
       2.01    Continuation; Admission . . . . . . . . . . . . . . . . . . .5
       2.02    Name. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
       2.03    Principal Place of Business; Registered Office; Registered 
               Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
       2.04    Purposes. . . . . . . . . . . . . . . . . . . . . . . . . . .5
       2.05    Term. . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

ARTICLE III

CAPITAL CONTRIBUTIONS - PARTNERSHIP INTERESTS. . . . . . . . . . . . . . . .6
       3.01    Initial Capital Contributions . . . . . . . . . . . . . . . .6
       3.02    Additional Capital Contributions. . . . . . . . . . . . . . .6
       3.03    Failure to Make Required Contributions. . . . . . . . . . . .6
       3.04    Capital Accounts. . . . . . . . . . . . . . . . . . . . . . .6
       3.05    Partner Loans . . . . . . . . . . . . . . . . . . . . . . . .7
       3.06    Other Matters Relating to Capital Contributions . . . . . . .7
       3.07    Deficit Capital Account Balances. . . . . . . . . . . . . . .7
       
ARTICLE IV

RIGHTS AND POWERS OF THE GENERAL PARTNER . . . . . . . . . . . . . . . . . .8
       4.01    Duties of General Partner . . . . . . . . . . . . . . . . . .8
       4.02    Reliance by Third Parties . . . . . . . . . . . . . . . . . .8
       4.03    Management of Business. . . . . . . . . . . . . . . . . . . .8
       4.04    Operating Reserve Account . . . . . . . . . . . . . . . . . .9
       4.05    Payment of Costs and Expenses . . . . . . . . . . . . . . . .9
       4.06    Exercise of Rights and Powers . . . . . . . . . . . . . . . .9
       4.07    Compensation. . . . . . . . . . . . . . . . . . . . . . . . .9
       4.08    Liability . . . . . . . . . . . . . . . . . . . . . . . . . .9
       4.09    Indemnification . . . . . . . . . . . . . . . . . . . . . . .9
       4.10    Tax Matters Partner . . . . . . . . . . . . . . . . . . . . 10
       4.11    Guaranty of Debt; Guaranty and Commitment Fees. . . . . . . 11
       4.12    Construction Management . . . . . . . . . . . . . . . . . . 11


                                      -i-
<PAGE>

       4.13    Network Administration. . . . . . . . . . . . . . . . . . . 12
       
ARTICLE V

LIMITED PARTNER MATTERS. . . . . . . . . . . . . . . . . . . . . . . . . . 12
       5.01    Limitation of Liability . . . . . . . . . . . . . . . . . . 12
       5.02    Management. . . . . . . . . . . . . . . . . . . . . . . . . 12
       5.03    Consents. . . . . . . . . . . . . . . . . . . . . . . . . . 12
       5.04    Power of Attorney . . . . . . . . . . . . . . . . . . . . . 12
       5.05    Death, Bankruptcy, Etc. . . . . . . . . . . . . . . . . . . 13
       
ARTICLE VI

ALLOCATIONS AND DISTRIBUTIONS. . . . . . . . . . . . . . . . . . . . . . . 13
       6.01    Allocation of Net Income and Loss from Operations . . . . . 13
       6.02    Distributions of Cash Flow from Operations
               and Major Capital Events. . . . . . . . . . . . . . . . . . 14
       6.03    Limitations on Allocations. . . . . . . . . . . . . . . . . 14
       6.04    Distributions Upon Liquidation of Partnership . . . . . . . 16
       6.05    Liquidation of Partners Interest. . . . . . . . . . . . . . 16
       6.06    In-Kind Distributions . . . . . . . . . . . . . . . . . . . 17
       6.07    Additional Tax Allocation Provisions. . . . . . . . . . . . 17
       
ARTICLE VII

FISCAL MATTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
       7.01    Fiscal Year . . . . . . . . . . . . . . . . . . . . . . . . 18
       7.02    Books and Records . . . . . . . . . . . . . . . . . . . . . 18
       7.03    Reports and Statements. . . . . . . . . . . . . . . . . . . 18
       7.04    Audit . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
       7.05    Tax Returns . . . . . . . . . . . . . . . . . . . . . . . . 19
       7.06    Bank Accounts . . . . . . . . . . . . . . . . . . . . . . . 19
       7.07    Tax Elections . . . . . . . . . . . . . . . . . . . . . . . 19

ARTICLE VIII

TRANSFERS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
       8.01    Restriction on Transfers. . . . . . . . . . . . . . . . . . 19
       8.02    Permitted Sales after Right of First Refusal Is Given . . . 19
       8.03    Permitted Transfers . . . . . . . . . . . . . . . . . . . . 20
       8.04    Assumption by Transferee. . . . . . . . . . . . . . . . . . 21
       8.05    Cost of Transfers . . . . . . . . . . . . . . . . . . . . . 21
       8.06    Effect of Attempted Disposition in Violation of this 
               Agreement . . . . . . . . . . . . . . . . . . . . . . . . . 21


                                      -ii-
<PAGE>

ARTICLE IX

RESIGNATION, WITHDRAWAL AND REMOVAL OF GENERAL PARTNER:
ADMISSION OF NEW GENERAL PARTNER . . . . . . . . . . . . . . . . . . . . . 21
       9.01    Voluntary Resignation or Withdrawal of the General Partner. 21
       9.02    Substitute and Additional General Partners. . . . . . . . . 21
       9.03    Admission of a Successor General Partner. . . . . . . . . . 21

ARTICLE X

DISSOLUTION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
       10.01   Dissolution . . . . . . . . . . . . . . . . . . . . . . . . 22
       10.02   Wind-Up of Affairs. . . . . . . . . . . . . . . . . . . . . 23
       
ARTICLE XI
       
MISCELLANEOUS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
       11.01   Amendments. . . . . . . . . . . . . . . . . . . . . . . . . 23
       11.02   Other Activities. . . . . . . . . . . . . . . . . . . . . . 23
       11.03   Partition . . . . . . . . . . . . . . . . . . . . . . . . . 23
       11.04   Notices . . . . . . . . . . . . . . . . . . . . . . . . . . 23
       11.05   Provisions Severable. . . . . . . . . . . . . . . . . . . . 23
       11.06   Counterparts. . . . . . . . . . . . . . . . . . . . . . . . 23
       11.07   Headings. . . . . . . . . . . . . . . . . . . . . . . . . . 24
       11.08   Successors and Assigns. . . . . . . . . . . . . . . . . . . 24
       11.09   APPLICABLE LAW. . . . . . . . . . . . . . . . . . . . . . . 24
</TABLE>

                                    -iii-
<PAGE>

                             SECOND AMENDED AND RESTATED
                           AGREEMENT OF LIMITED PARTNERSHIP
                                          OF
                             CAPROCK FIBER NETWORK, LTD.


     This Second Amended and Restated Agreement of Limited Partnership of 
CapRock Fiber Network, Ltd. (the "Agreement") is entered into by and among 
CapRock Systems, Inc., a Texas corporation ("CapRock") as the general partner 
(the "General Partner"), and Jere W. Thompson, Sr. ("Jere Thompson"), 
Margaret Dunlap Thompson ("Peggy Thompson"), Michael D. Thompson ("Michael 
Thompson"), Patrick J. Thompson ("Pat Thompson"), Kimberly A. Thornton ("Kim 
Thornton"), Margaret D. Nelson ("Debbie Nelson"), Christopher D. Thompson 
("Chris Thompson"), David E. Thompson ("David Thompson") (collectively, the 
"Thompson Family"), Mark Langdale ("Langdale"), Jere W. Thompson, Jr. 
("Thompson"), The Hayden Company, a Texas corporation ("Hayden"), Joe C. 
Thompson, Jr. ("Jodie Thompson"), and The Florida Company, a Texas 
corporation ("Florida") as the limited partners (the "Limited Partners").

                                R E C I T A L S:


     A.   CapRock Fiber Network, Ltd., a Texas limited partnership (the 
"Partnership") was formed by that certain Agreement of Limited Partnership of 
CapRock Fiber Network, Ltd. (the "Original Agreement).

     B.   The Original Agreement was amended and restated by that certain 
Amended and Restated Agreement of Limited Partnership of CapRock Fiber 
Network, Ltd. dated May 31, 1993 (the "Amended Agreement").

     C.   The General Partner and the Limited Partners desire to amend the 
Amended Agreement to (i) admit Hayden, Florida and Jodie Thompson as Limited 
Partners, (ii) increase the interests in the Partnership of Thompson and 
Langdale, (iii) amend the allocation and distribution provisions to account 
for a construction loan which has been guaranteed by certain of the Partners, 
(iv) modify the purposes of the Partnership, and (v) otherwise amend the 
Amended Agreement as set forth herein.

                                   AGREEMENT:

     NOW THEREFORE, in consideration of the mutual covenants set forth in 
this Agreement, and for other good and valuable consideration, the receipt 
and sufficiency of which are hereby acknowledged, the General Partner and the 
Limited Partners agree as follows:

<PAGE>

                                      ARTICLE I

                                     DEFINITIONS

     1.01 TERMS DEFINED. When used in this Agreement, the following terms 
shall have the meanings set forth below:

          "Act" shall mean the Texas Revised Limited Partnership Act as set
     forth in Vernon's Revised Civil Statutes Annotated Article 6132a-1, as
     subsequently amended.

          "Affiliate" shall mean a Person who is (i) directly or indirectly,
     through one or more intermediaries, controlling, controlled by, or under
     common control with the Person in question, or (ii) a spouse, child,
     grandchild, parent, sibling or any Person controlled by any of the
     foregoing, of the Person in question, or in case of a Person other than an
     individual, the individual who controls the Person in question. For
     example, a trust for the benefit of the grandchild of the controlling
     shareholder of a Partner that is a corporation, would be treated as an
     Affiliate. The term "control," as used in the immediately preceding
     sentence, means, with respect to an entity that is a corporation, the right
     to exercise, directly or indirectly, more than 50% of the voting rights
     attributable to the shares of such corporation and, with respect to a
     Person that is not a corporation, the possession, directly or indirectly,
     of the power to direct or cause the direction of the management or policies
     of such Person.

          "Capital Contribution" shall mean the cash and the fair market value
     of property other than cash (net of liabilities which the Partnership
     assumes or takes the property subject to) contributed to the capital of the
     Partnership by a Partner.

          "Cash Flow" shall mean, for the period in question, or in the case of
     a Major Capital Event, the event in question, the amount by which the
     aggregate cash receipts of the Partnership from any source (including loans
     and Capital Contributions) 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.

          "Certificate" shall mean the Amended and Restated Certificate of
     Limited Partnership to be filed upon behalf of the Partnership with the
     Secretary of State of Texas in accordance with all applicable statutes.

          "Code" shall mean the Internal Revenue Code of 1986, as amended from
     time to time, and the rules and regulations thereunder.

          "Commitment Fee" shall mean a fee payable to each Guarantor in an
     amount equal to 1% of such Guarantor's Guaranty.

          "Construction Lender" shall mean Bank One, Texas, National
     Association, or such other Person who refinances the Construction Loan or
     becomes a successor in interest to Bank One, Texas, National Association
     with respect to the Construction Loan.


                                       2
<PAGE>

          "Construction Loan" shall mean the loan made by the Construction
     Lender to the Partnership in an amount sufficient to construct, and
     initiate operations of, the Network.

          "General Partner" shall mean CapRock, so long as such Person shall
     continue as a general partner hereunder, and any other Person who has been
     admitted as and continues to be, a general partner of the Partnership.

          "Guarantors" shall mean Jere Thompson, Hayden, Florida, Jodie Thompson
     and Mark Langdale.

          "Guaranty" shall mean with respect to each Guarantor, the limited and
     several amount of the Construction Loan which has been personally
     guaranteed by such Guarantor in accordance with Section 4.11.

          "Guaranty Fee" shall mean an annual amount payable to each Guarantor
     equal to 7% (pro-rated for partial years) of the product of (i) the amount
     of such Guarantor's Guaranty multiplied by (ii) a fraction, the numerator
     of which is the lesser of (A) $8,000,000, or (B) the average outstanding
     daily principal under the Construction Loan during the applicable period
     and the denominator of which is $8,000,000.

          "Limited Partners" shall mean Jere Thompson, Peggy Thompson, Michael
     Thompson, Pat Thompson, Debbie Nelson, Kim Thornton, Chris Thompson, David
     Thompson, Langdale, Thompson, Hayden, Florida and Jodie Thompson so long as
     each such Person shall continue as a limited partner hereunder, and any
     other Person who has been admitted as, and who continues to be, a limited
     partner of the Partnership.

          "Liquidating Event" shall mean the sale, condemnation or exchange of
     all or substantially all of the Network or other transaction which,
     individually or together with any similar transaction or transactions,
     results in the disposition of all or substantially all of the Network and
     occurs in the course of liquidation of the Partnership, or upon and with
     respect to which event the Partnership is wound up and all payments,
     including payments on any promissory notes, have been received.

          "Major Capital Event" shall mean any event (excluding a Liquidating
     Event) arising other than in the ordinary course of the Partnership's
     business, including, without limitation, (i) the sale, exchange or
     disposition of less than substantially all of the Network; (ii) a
     condemnation or disposition of less than substantially all of the Network;
     (iii) the recovery of damage awards or settlements or insurance proceeds
     from the loss of or damage to the Network, and (iv) a borrowing or
     refinancing by the Partnership. The General Partner's designation of an
     event as a Major Capital Event shall be binding upon the Partners and the
     Partnership absent manifest error.

          "Majority in Interest" shall mean Partners (or Partners of a
     designated class) owning more than 50% of the Partnership Interests (or
     Partnership Interests of the designated class).


                                       3
<PAGE>

          "Network" shall mean the fiber optic telecommunications network to be
     constructed, maintained and operated by the Partnership and initially 
     located between Corpus Christi and Houston, Texas, as may be expanded or 
     modified by agreement among the General Partner and a Majority in 
     Interest of the Limited Partners.

          "Operations" shall mean all activities arising in the ordinary course
     of the Partnership's business not constituting a Major Capital Event or a
     Liquidating Event.

          "Partners" shall mean the General Partner and the Limited Partners.
     "Partner" shall mean any one of the Partners.

          "Partnership" shall mean the limited partnership created and existing
     pursuant hereto.

          "Partnership Interest" shall mean a Partner's interest, expressed as a
     percentage in Exhibit "A" in the income, gains, losses, deductions, tax
     credits, voting rights and distributions of the Partnership as may be
     affected by the provisions of this Agreement and as may thereafter be
     adjusted.

          "Person" shall mean an individual, partnership, joint venture,
     corporation, limited liability company, trust, estate or other entity or
     organization.

          "Preferred Return" shall mean, with respect to each Guarantor, a
     cumulative rate of return equal to twelve percent (12%) per annum,
     compounded annually, on such Guarantor's Unreturned Capital Contributions.

          "Proceeding" means any threatened, pending or completed action, suit
     or proceeding, whether civil, criminal, administrative, arbitrative or
     investigative, any appeal in such an action, suit or proceeding, and any
     inquiry or investigation that could lead to such an action, suit or
     proceeding.

          "Section" shall mean any section or subsection in this Agreement.

          "Service" shall mean the Internal Revenue Service.

          "The Thompson Family" shall mean Jere Thompson, Peggy Thompson,
     Michael Thompson, Pat Thompson, Debbie Nelson, Kim Thornton, Chris Thompson
     and David Thompson.

          "Transfers" shall mean the sale, transfer, conveyance, assignment,
     pledge, hypothecation, mortgage or other encumbrance or disposition of all
     or any part of a Partnership Interest.

          "Unpaid Preferred Return" shall mean, as to each Guarantor, an amount
     equal to such Guarantor's Preferred Return less distributions previously
     made to such Guarantor pursuant to Section 6.02 (a)from and after the date
     of this Agreement.


                                       4

<PAGE>

          "Unreturned Capital Contributions" shall mean, as to each 
     Guarantor, the aggregate Capital Contributions made to the Partnership 
     by such Guarantor from and after the date of this Agreement pursuant to 
     Section 3.02(b), reduced by the aggregate distributions to such 
     Guarantor from and after the date of this Agreement from the Partnership 
     pursuant to Section 6.02(b).

     1.02  NUMBER AND GENDER. Whenever the context requires, references in 
this Agreement to the singular number shall include the plural, and the 
plural number shall include the singular, and words denoting gender shall 
include the masculine, feminine and neuter.

                                      ARTICLE II

                                       GENERAL

     2.01 CONTINUATION; ADMISSION.

          (a)  The Partners hereby continue the Partnership as a limited 
     partnership pursuant to the Act for the purposes described in Section 
     2.04. The General Partner shall execute and file on behalf of the 
     Partners and the Partnership a Certificate in accordance with applicable 
     statutory requirements in such offices and places as may be required by 
     the laws of the State of Texas.

          (b)  As of the effective date of this Agreement, Hayden, Florida 
     and Jodie Thompson are admitted to the Partnership as Limited Partners, 
     and the Partnership Interests of the Partners shall be as set forth in 
     Exhibit "A".

     2.02 NAME. The business of the Partnership shall be conducted under the
name "CapRock Fiber Network, Ltd."

     2.03 PRINCIPAL PLACE OF BUSINESS; REGISTERED OFFICE; REGISTERED AGENT.  The
principal place of business, the principal office and the registered office of
the Partnership shall be at 13455 Noel Road, Suite 1925, Lockbox 46, Dallas,
Texas 75240. The General Partner may change the principal place of business of
the Partnership to any other place upon ten (10) days written notice to the
Limited Partners. The registered agent shall be Jere W. Thompson, Jr.

     2.04 PURPOSES. The purposes of the Partnership shall be:

               (a)  to finance, construct, own and operate the Network;

               (b)  to perform all acts which are appropriate or necessary in 
          conjunction with the Partnership financing, constructing, owning 
          and operating the Network; and

               (c)  to do any and all other acts and things necessary, 
          incidental or convenient to carry on the Partnership business as 
          contemplated under this Agreement.


                                      5

<PAGE>

     2.05 TERM. The Partnership shall continue until terminated pursuant to
Section 10.01.

                                     ARTICLE III

                    CAPITAL CONTRIBUTIONS - PARTNERSHIP INTERESTS

     3.01 INITIAL CAPITAL CONTRIBUTIONS. As of the effective date of this 
Agreement, the Partnership has issued Partnership Interests to each of the 
Guarantors in consideration of their Guaranties. Each of the other Partners, 
or their predecessor's in interest, has previously contributed cash or 
property to the Partnership.

     3.02 ADDITIONAL CAPITAL CONTRIBUTIONS.

          (a) No Partner shall be obligated to make any Capital Contributions
     to the Partnership.

          (b) If a Guarantor makes payments to the Construction Lender pursuant
     to its obligation under the applicable Guaranty, such payment shall be
     treated as a Capital Contribution to the Partnership.

     3.03 FAILURE TO MAKE REQUIRED CONTRIBUTIONS. Any Guarantor who fails or 
refuses to make any payment to the Construction Lender required under such 
Guarantor's Guaranty by any applicable due date (including all extensions and 
cure periods) shall forfeit its Partnership Interest (but in the cases of 
Langdale and Jere Thompson, only the portion of their respective Partnership 
Interest received as consideration for their Guaranty) to the remaining 
Guarantors, who shall be entitled to receive such interest pro rata based 
upon the amount of such Guarantors' Guaranties. Such forfeiture will occur 
automatically upon such failure or refusal to pay without necessity of any 
further action.

     3.04 CAPITAL ACCOUNTS. The Partnership shall establish and maintain a
capital account ("Capital Account") for each Partner in accordance with Section
704(b) of the Code and Treasury Regulations Section 1.704-1(b)(2)(iv). Except as
otherwise provided in this Agreement, the Capital Account balance of each
Partner shall be credited (increased) by (i) the amount of cash contributed or
deemed contributed by such Partner to the capital of the Partnership, (ii) the
fair market value of property contributed or deemed contributed by such Partner
to the capital of the Partnership (net of liabilities secured by such property
that the Partnership assumes or takes subject to), (iii) such Partner's
allocable share of Partnership income and gain (or items thereof) including
income and gain exempt from federal taxation, and (iv) such Partner's share of
any increase in basis of Partnership "Section 38" property pursuant to Section
48(q) of the Code, and the Capital Account balance of each Partner shall be
debited (decreased) by (i) the amount of cash distributed to such Partner, (ii)
the fair market value of property distributed to such Partner (net of
liabilities secured by such property which the Partner assumes or takes subject
to), (iii) such Partner's share of Partnership losses, depreciation and other
deductions, including such Partner's share of expenditures of the Partnership
described in Section 705(a)(2)(B) of the Code and (iv) such Partner's share of
any


                                      6

<PAGE>

reduction in basis of Partnership "Section 38" property pursuant to Section 
48(q) of the Code. A Partner's share of any basis reduction or increase 
pursuant to Section 48(q) of the Code shall be determined in the manner 
prescribed by Treasury Regulations Section 1.46-3(f). Notwithstanding the 
foregoing, a Partner's Capital Account shall not be adjusted to reflect gain 
or loss attributable to the disposition of property contributed by such 
Partner to the extent such Partner's Capital Account reflected such inherent 
gain or loss in the property on the date of its contribution to the 
Partnership.

     3.05 PARTNER LOANS. A Partner, or an Affiliate of a Partner, may, but is 
not obligated to, loan or cause to be loaned to the Partnership such 
additional sums as the General Partner deems appropriate or necessary for the 
conduct of the Partnership's business. Loans made by a Partner, or an 
Affiliate of a Partner, shall be upon such terms and for such maturities as 
the General Partner deems reasonable in view of all the facts and 
circumstances and the repayment of which may be designated in priority to 
distributions of Cash Flow.

     3.06 OTHER MATTERS RELATING TO CAPITAL CONTRIBUTIONS.

          (a)  Loans by any Partner to the Partnership shall not be 
     considered contributions to the capital of the Partnership.

          (b)  No Partner shall be required to make contributions to the 
     capital of the Partnership except to the extent expressly provided by 
     this Article III.

          (c)  No Partner shall be entitled to withdraw, or to obtain a return 
     of, any part of his or her contribution to the capital of the 
     Partnership, or to receive property or assets other than cash in return 
     thereof, and no Partner shall be liable to any other Partner for a 
     return of his or her contributions to the capital of the Partnership, 
     except as provided in this Agreement.

          (d)  No Partner shall be entitled to priority over any other 
     Partner, either with respect to a return of his or her contributions to 
     the capital of the Partnership, or to allocations of taxable income, 
     gains, losses or credits, or to distributions, except as provided in 
     this Agreement.

          (e)  No interest shall be paid on any Partner's Capital Contributions.


     3.07 DEFICIT CAPITAL ACCOUNT BALANCES. Upon liquidation of the 
Partnership, no Limited Partner with a deficit balance in his or her Capital 
Account shall have any obligation to restore such deficit balance, or to make 
any contribution to the capital of the Partnership. Upon liquidation of the 
Partnership, the General Partner shall be obligated to contribute to the 
capital of the Partnership within ninety (90) days after the date of such 
liquidation an amount equal to the lesser of its deficit Capital Account 
balance or 1.01% of the aggregate Limited Partner Capital Contributions less 
the aggregate Capital Contributions previously made by the General Partner 
which amount shall be paid to the creditors of the Partnership or distributed 
to the other Partners in accordance with their positive Capital Account 
balances.


                                      7

<PAGE>

                                      ARTICLE IV

                       RIGHTS AND POWERS OF THE GENERAL PARTNER

     4.01 DUTIES OF GENERAL PARTNER. The General Partner shall have full, 
exclusive and complete discretion to manage and control the business and 
affairs of the Partnership, to make all decisions affecting the business and 
affairs of the Partnership, and to take all actions it deems necessary or 
appropriate to accomplish the purposes of the Partnership. The rights, powers 
and authorities of the General Partner shall include, without limitation, 
absolute authority to (i) perform all acts, make all decisions and perform 
all duties which are appropriate or necessary in conjunction with the 
fulfillment of the Partnership purposes, and (ii) negotiate, execute and 
deliver any and all documents appropriate or necessary to accomplish any of 
the foregoing. The rights, powers and authorities of the General Partner 
pursuant to this Agreement shall be liberally construed to encompass all acts 
and activities in which a Limited Partnership may engage under the act. The 
expression of any power, authority or right of the General Partner in this 
Agreement shall not limit or exclude any other power, authority or right 
which is not specifically or expressly set forth in this Agreement or the act.

     4.02 RELIANCE BY THIRD PARTIES. Notwithstanding any other provision of 
this Agreement to the contrary, no lender or purchaser, including any 
purchaser of property from the Partnership or any other person dealing with 
the Partnership, shall be required to look to the application of proceeds 
hereunder or to verify any representation by the General Partner as to the 
extent of the interest in the assets of the Partnership that the General 
Partner is entitled to encumber, sell or otherwise use, and any such lender 
or purchaser shall be entitled to rely exclusively on the representations of 
the General Partner as to its authority to enter into such financing or sale 
arrangement and shall be entitled to deal with the General Partner as to its 
authority to enter into such financing or sale arrangement and shall be 
entitled to deal with the General Partner as if it were the sole party in 
interest therein, both legally and beneficially. In no event shall any Person 
dealing with the General Partner's representative with respect to any 
business or property of the Partnership be obligated to ascertain that the 
terms of this Agreement have been complied with, or be obligated to inquire 
into the necessity or expedience of any act or action of the General Partner 
or the General Partner's representative. Every contract, agreement, deed, 
mortgage, security agreement, promissory note or other instrument or document 
executed by the General Partner or the General Partner's representative with 
respect to the business or property of the Partnership shall be conclusive 
evidence in favor of any and every Person relying thereon or claiming 
thereunder that (a) at the time of the execution and/or delivery thereof; 
this Agreement was in full force and effect, (b) such instrument or document 
was duly executed in accordance with the terms and provisions of this 
Agreement and is binding upon the Partnership, and (c) the General Partner or 
the General Partner's representative was duly authorized and empowered to 
execute to deliver any and every such instrument or document for and on 
behalf of the Partnership.

     4.03 MANAGEMENT OF BUSINESS. The General Partner shall operate and 
manage the business of the Partnership on a day-to-day basis. Notwithstanding 
the foregoing, the General Partner shall have the right, in its sole 
discretion, to employ any competent management company as it shall select to 
perform said management services.


                                      8

<PAGE>

     4.04 OPERATING RESERVE ACCOUNT. To the extent funds of the Partnership 
are sufficient therefor, the General Partner shall maintain an adequate 
reserve for operating expenses and capital expenditures as deemed necessary 
by the General Partner for the proper conduct of the business of the 
Partnership.

     4.05 PAYMENT OF COSTS AND EXPENSES. The Partnership shall be responsible 
for paying all costs and expenses of forming and continuing the Partnership, 
and conducting the business of the Partnership, including, without 
limitation, costs of utilities, costs of furniture, fixtures, equipment and 
supplies, insurance premiums, property taxes, accounting costs, legal 
expenses and office supplies. If any such costs and expenses are or have been 
paid by the General Partner, or any of its Affiliates, on behalf of the 
Partnership, then such General Partner (or its Affiliates) shall be entitled 
to be reimbursed for such payment so long as such cost or expense was 
reasonably necessary and was reasonable in amount.

     4.06 EXERCISE OF RIGHTS AND POWERS. The General Partner shall endeavor 
to operate and manage the business of the Partnership to the best of its 
ability, in a careful and prudent manner and in accordance with good industry 
practice. The authority of the General Partner to take any action required or 
permitted under the provisions of this Agreement shall in all respects be 
exercised in its sole and absolute discretion, and the General Partner shall 
be required to devote only such time to the performance of its duties and 
obligations hereunder as it shall, in its sole and absolute discretion, 
determine to be necessary or advisable. The General Partner shall be entitled 
to deal with its Affiliates in the performance of its duties and obligations 
under this Agreement, so long as the material terms and conditions of such 
dealings are not substantially different from the prevailing market terms, 
conditions and prices available from non-Affiliated third parties.

     4.07 COMPENSATION. Except as otherwise expressly provided in this 
Agreement, the General Partner and its Affiliates shall not be entitled to 
receive any compensation from the Partnership. This Section 4.07 does not in 
any way limit the General Partner's right to reimbursement pursuant to 
Section 4.05.

     4.08 LIABILITY. The General Partner shall endeavor to perform its duties 
under this Agreement with ordinary prudence and in a manner reasonable under 
the circumstances. The General Partner shall not be liable to the Partnership 
or the Limited Partners for any loss or liability caused by any act, or by 
the failure to do any act, unless such loss or liability arises from the 
General Partner's intentional misconduct, gross negligence or fraud. In no 
event shall the General Partner be liable by reason of a mistake in judgment 
made in good faith, or action or lack of action based on the advice of legal 
counsel. Further, the General Partner shall in no event be liable for its 
failure to take any action unless it is specifically directed to take such 
action under the terms of this Agreement.

     4.09 INDEMNIFICATION. Upon the determInation as set forth in Section 
11.06 of the Act that such indemnification is permissible under Section 11.02 
of the Act, the Partnership (but not the Limited Partners) hereby indemnifies 
and holds harmless any person or entity who is or was a General Partner (and 
its Affiliates) against any and all losses, costs, expenses (including 
reasonable attorneys' fees), penalties, taxes, fines, settlements, damages 
and judgments resulting from the fact


                                      9

<PAGE>

the General Partner was, is or is threatened to be named a defendant or 
respondent in a Proceeding because such person was or is a General Partner in 
the Partnership, even if such losses, costs, expenses etc. were the result of 
the General Partner's own negligence. This indemnification shall only be 
effective if the General Partner (i) acted in good faith, (ii) reasonably 
believed that in instances that the General Partner was acting in its 
official capacity that its conduct was in the Partnership's best interest and 
in all other instances that the General Partner's conduct was not opposed to 
the Partnership's best interests, and (iii) in a criminal proceeding, had no 
cause to believe its conduct was unlawful. Notwithstanding the foregoing, 
this indemnification shall in no event be applicable to a Proceeding in which 
the General Partner has been found to be liable for intentional misconduct, 
gross negligence or fraud in the performance of the General Partner's duty to 
the Partnership or the Limited Partners.

     4.10.  TAX MATTERS PARTNER.

            (a) The General Partner is hereby designated as the "tax matters
     partner" of the Partnership (as defined in the Code) and is authorized and
     required to represent the Partnership (at the Partnership's expense) in
     connection with all examinations of the Partnership's affairs by tax
     authorities, including resulting administrative and judicial proceedings,
     and to expend Partnership finds for professional services and costs
     associated therewith. The Limited Partners agree to cooperate with the
     General Partner and to do or refrain from doing any or all things
     reasonably required by the General Partner to conduct such proceedings.

            (b)  The General Partner is authorized to:

                (i)    enter into a settlement agreement with the Service with
          respect to any tax audit or judicial review, in which agreement the
          General Partner may expressly state that the agreement will bind all
          Partners;

                (ii)   file a petition for judicial review of a final
          administrative adjustment pursuant to section 6226 of the Code;

                (iii)  intervene in any action brought by any other Partner
          for judicial review of a final administrative adjustment;

                (iv)   file a request for an administrative adjustment with
          the Service at any time and, if any part of the request is not allowed
          by the Service, to file a petition for judicial review with respect to
          the request; and

                (v)    take any other action on behalf of the Partners or the
          Partnership in connection with any administrative or judicial tax
          proceeding to the extent permitted by applicable law or regulations.

          (c)   The Partnership will reimburse the General Partner for all
     expenses incurred by it in connection with any administrative or judicial
     proceeding with respect to the tax liabilities of the Partners.


                                     10

<PAGE>

     4.11.  GUARANTY OF DEBT; GUARANTY AND COMMITMENT FEES.

            (a)  The Guarantors shall severally guaranty the Construction Loan
     in the following amounts:
<TABLE>
                 <S>                           <C>
                 Jere Thompson                 $1,000,000
                 Hayden                         2,000,000
                 Jodie Thompson                 1,000,000
                 Florida                        1,000,000
                 Langdale                       3,000,000
</TABLE>

          If, for any reason, the Guarantors make payments to the 
     Construction Lender in satisfaction of all or a portion of their 
     obligation under their Guarantees, then each Guarantor making such 
     payment shall receive an additional Partnership Interest in the 
     Partnership as a Limited Partner equal to 3.00% (after issuance) for 
     each $1 million paid to the Construction Lender pursuant to such 
     Guaranty, pro rated for lesser amounts. The additional Partnership 
     Interest issuable to the Guarantors pursuant to this Section 4.11(a) 
     shall be derived solely out of the Partnership Interests of the Limited 
     Partners, including the Partnership Interests of the Guarantors existing 
     as of the date immediately prior to the effective date of this 
     Agreement, other than from the Partnership Interests of Jodie Thompson, 
     Hayden and Florida. In accordance with Section 3.02(b), amounts paid 
     pursuant to the Guaranties will be treated as Capital Contributions to 
     the Partnership.

          (b) The Partnership shall pay to the Guarantors the Guaranty Fee. 
     The Guaranty Fee shall be payable quarterly in arrears commencing 
     September 30, 1996. The accrued but unpaid Guaranty Fee shall accrue 
     interest at a rate equal to 12% per annum commencing from and after July 
     1, 1997. Such interest rate will increase 2% per annum commencing on 
     July 1, 1998 and each subsequent anniversary date.

          (c) The Partnership shall pay the Commitment Fee to each Guarantor. 
     The accrued but unpaid Commitment Fee shall accrue interest at a rate 
     equal to 12% per annum commencing from and after July 1, 1997. Such 
     interest rate will increase 2% per annum commencing on July 1, 1998 and 
     each subsequent anniversary date.

     4.12 CONSTRUCTION MANAGEMENT.  CapRock shall manage the construction and 
development of the Network on behalf of the Partnership. The Partnership 
shall pay to CapRock a fee in an amount equal to the sum of (i) 4% of the 
actual cost of constructing the entire Network payable monthly at a minimum 
of $15,000 per month commencing on February 1, 1996 and ending on the date 
the final payment is made to C&B Associates by the Partnership under all of 
its contracts for the construction of the entire Network and (ii) 5% of the 
excess of the projected costs of construction and capital expenditures as set 
forth in the budget submitted to the Construction Lender ($11,403,845), less 
the actual construction costs and capital expenditures incurred in the 
construction and start-up of the Network which amount is payable on the date 
of the last payment due under (i) above, and is being paid as an inducement 
to minimize the cost of the Network's construction and start-up. The 
management of the construction and development of the Network shall be 
conducted


                                     11

<PAGE>

pursuant to that certain Construction Management Agreement to be entered into 
between the Partnership and CapRock.

     4.13.  NETWORK ADMINISTRATION. The Partnership shall retain CapRock 
Communications Corp., a Texas corporation, to operate and manage the Network 
in accordance with that certain Management and Administration Agreement to be 
entered into between the Partnership and CapRock Communications Corp.


                                      ARTICLE V

                               LIMITED PARTNER MATTERS

      5.01  LIMITATION OF LIABILITY. No Limited Partner shall be bound by, or 
personally liable for, obligations or liabilities of the Partnership beyond 
the amount of his or its required contributions to the capital of the 
Partnership, and no Limited Partner shall be required to contribute any 
capital to the Partnership in excess of the contributions for which he or it 
is personally liable for under Article III.

     5.02   MANAGEMENT. No Limited Partner shall participate in the operation 
or management of the business of the Partnership, or transact any business 
for or in the name of the Partnership, nor shall any Limited Partner have any 
right or power to sign for or bind the Partnership in any manner. The right 
of the Limited Partners to consent to and approve of certain matters under 
the provisions of this Agreement shall not be deemed a participation in the 
operation and management of the business of the Partnership, or the exercise 
of control over the Partnership's affairs.

     5.03   CONSENTS. Any action requiring the consent or approval of the 
Limited Partners under the provisions of this Agreement shall be taken only 
if the consent or approval of the requisite number of Limited Partners is 
evidenced by written instrument executed by such Limited Partners.

     5.04   POWER OF ATTORNEY

            (a) Each Limited Partner hereby irrevocably severally appoints and
     constitutes the General Partner, its successors and assigns hereunder as
     its true and lawful attorney-in-fact, with full power and authority, on its
     behalf and in its name, to execute, acknowledge, swear to, deliver and,
     where appropriate, file in such offices and places as may be required by
     law:

                (i)   the Certificate, and any amendment thereto; and

                (ii)  any amendment to this Agreement upon compliance with
          Article VIII, Article IX or Section 11.01.

          (b) The power of attorney granted by the Limited Partners to the
     General Partner under paragraph (a) above is a special power coupled with
     an interest and is irrevocable, and may be exercised by any Person who at
     the time of exercise is a General Partner of the


                                     12

<PAGE>

     Partnership. Such power of attorney shall survive the death or legal 
     disability of a Limited Partner ant any Transfers or abandonment of its 
     Partnership Interest, or its withdrawal from the Partnership.

     5.05 DEATH, BANKRUPTCY, ETC. In no event shall the death, incompetency,
bankruptcy, insolvency or other incapacity of a Limited Partner operate to
dissolve the Partnership.

                                      ARTICLE VI

                            ALLOCATIONS AND DISTRIBUTIONS

     6.01   ALLOCATION OF NET INCOME AND LOSS FROM OPERATIONS. Net income and 
loss for each fiscal year from Operations shall be determined for financial 
accounting purposes in accordance with the method of accounting used for 
federal income tax purposes and the books and records of the Partnership. 
Except as provided in Sections 6.03 and 6.07(b), income, gain, loss and 
deduction shall be allocated among the Partners as set forth below.

          (a)  Net income and gain shall be allocated to the Partners as
     follows:

               (i)     First, to the Partners pro rata in accordance with, 
          and in an amount equal to the difference between (A) the sum of the 
          Cash Flow from Operations and Major Capital Events then 
          distributable plus the aggregate amount of Cash Flow from 
          Operations and Major Capital Events previously distributed to the 
          Partners pursuant to Section 6.02(a), over (b) the aggregate amount 
          of net income and gain previously allocated to such Partners 
          pursuant to this Section 6.01(a)(i);

               (ii)    Next, to the Partners pro rata in accordance with, and 
          in an amount equal to, the difference between the aggregate net 
          loss and deduction previously allocated to the partners pursuant to 
          Section 6.01(b) over the aggregate amount of net income and gain
          previously allocated to such Partners pursuant to this Section 
          6.01(a)(ii);

               (iii)   Next, to the Partners pro rata in accordance with, and 
          in an amount equal to the difference between (A) the sum of the 
          Cash Flow from Operations and Major Capital Events then 
          distributable plus the aggregate amount of Cash Flow from 
          Operations and Major Capital Events previously distributed to the 
          Partners pursuant to Section 6.02(c), over (b) the aggregate amount 
          of net income and gain previously allocated to such Partners 
          pursuant to this Section 6.01(a)(iii); and

                (iv)   Thereafter, 1% to the General Partner, 19.5% to 
          Thompson, 4.5% to Langdale and the remainder among the Partners 
          (including Thompson and Langdale) pro rata in accordance with their 
          Partnership Interests.

          (b)  Net loss and deduction shall be allocated to the Partners as
     follows:


                                     13

<PAGE>

                (i)   First, to the Partners pro rata in accordance with, and
          in an amount equal to, their positive Capital Account balances; and

                (ii)  Thereafter, to Partners pro rata in accordance with
          their Partnership Interests.

            (c)  Notwithstanding anything to the contrary in Section 6.01(b), 
     any item of net loss or deduction that is attributable to a partner 
     nonrecourse debt must be allocated to the Partner that bears the 
     economic risk of loss for such debt as determined under Code Sections 
     704 and 752, and the Treasury Regulations thereunder. If more than one 
     Partner bears the economic risk of loss for a partner nonrecourse debt, 
     any net loss attributable to such debt must be allocated among such 
     Partners in accordance with the ratios in which the Partners share the 
     economic risk of loss for such partner nonrecourse debt.

     6.02   DISTRIBUTIONS OF CASH FLOW FROM OPERATIONS AND MAJOR CAPITAL 
EVENTS. The General Partner shall distribute Cash Flow from Operations and 
Major Capital Events when available to the Partners. Notwithstanding the 
frequency or amounts of distributions, Cash Flow shall be distributed as 
follows:

            (a)  First, to the Guarantors pro rata in accordance with their 
     Unpaid Preferred Return, in such amount and until such time as each such 
     Guarantor's Unpaid Preferred Return has been reduced to zero;

            (b)  Next, to the Guarantors pro rata in accordance with their 
     Unreturned Capital Contributions, in such amount and until such time as 
     each such Guarantor's Unreturned Capital Contributions has been reduced 
     to zero;

            (c)  Next, to the Partners pro rata in accordance with their 
     Partnership Interests until such time as the Guaranties of each 
     Guarantor other than Langdale have been released in their entirety by 
     the Construction Lender; and

            (d)  Thereafter, 1% to the General Partner, 19.5% to Thompson, 4.5%
     to Langdale and the remainder among the Partners (including Thompson and 
     Langdale) pro rata in accordance with their Partnership Interests.

     6.03   LIMITATIONS ON ALLOCATIONS.

            (a)  MINIMUM GAIN CHARGEBACK. Notwithstanding any provision of 
     this Article VI, if there is a net decrease in Partnership minimum gain 
     during any fiscal year or other period, prior to any other allocation 
     pursuant hereto, each Partner shall be specially allocated items of 
     Partnership income and gain for such year (and, if necessary, subsequent 
     years) in an amount and manner required by Treasury Regulation Sections 
     1.704-1T(b)(4)(iv)(e) and (h) and Section 1.704-2. Notwithstanding any 
     provision of this Article VI, if there is a net decrease in partner 
     nonrecourse debt minimum gain, any Partner with a share of that partner 
     nonrecourse debt minimum gain as of the beginning of such year shall be 
     allocated items of


                                     14

<PAGE>

     income and gain for the year (and, if necessary, for succeeding years) 
     equal to that Partner's share of the net decrease in the partner 
     nonrecourse debt minimum gain, as provided in Treasury Regulation 
     Section 1.704-2(i)(4).

            (b)  QUALIFIED INCOME OFFSET. Any Partner who unexpectedly 
     receives an adjustment, allocation or distribution described in Treasury 
     Regulation Section 1.704-1(b)(2) (ii)(d)(4), (5) or (6) that causes or 
     increases a negative balance in its Capital Account beyond the sum of 
     the amount of such Partner's obligation to restore its deficit Capital 
     Account plus its share of minimum gain shall be allocated items of 
     income and gain sufficient to eliminate such increase or negative 
     balance caused thereby, as quickly as possible, to the extent required 
     by such Treasury Regulation.

            (c)  GROSS INCOME ALLOCATION. If any Partner has a deficit 
     Capital Account at the end of any Partnership fiscal year which is in 
     excess of the sum of (i) the amount such Partner is obligated to restore 
     pursuant to any provision of this Agreement and (ii) the amount such 
     Partner is deemed to be obligated to restore pursuant to Treasury 
     Regulation Section 1.704-2, each such Partner shall be specially 
     allocated items of Partnership income and gain in the amount- of such 
     excess as quickly as possible, provided that an allocation pursuant to 
     this Section 6.03(c) shall be made only if and to the extent that such 
     Partner would have a deficit Capital Account in excess of such sum after 
     all other allocations provided for in this Article VI have been made as 
     if this Section 6.03(c) were not in this Agreement.

            (d)  SECTION 704(b) LIMITATION. Notwithstanding any other 
     provision of this Agreement to the contrary, no allocation of any item 
     of income or loss shall be made to a Partner if such allocation would 
     not have "economic effect" pursuant to Treasury Regulation Section 
     1.704-1(b)(2)(ii) or otherwise be in accordance with its interest in the 
     Partnership within the meaning of Treasury Regulation Sections 
     1.704-1(b)(3) and 1.704-2. To the extent an allocation cannot be made to 
     a Partner due to the application of this Section 6.03(d), such 
     allocation shall be made to the other Partner(s) entitled or required to 
     receive such allocation hereunder.

            (e)  CURATIVE ALLOCATIONS. Any allocations of items of income, 
     gain, or loss pursuant to Sections 6.03(a)-(d) shall be taken into 
     account in computing subsequent allocations pursuant to this Article VI, 
     so that the net amount of any items so allocated and the income, losses 
     and other items allocated to each Partner pursuant to this Article VI 
     shall, to the extent possible, be equal to the net amount that would 
     have been allocated to each Partner had no allocations ever been made 
     pursuant to Sections 6.03(a)-(d).

            (f)  MINIMUM ALLOCATIONS TO GENERAL PARTNER. If at any time the 
     allocation provisions of this Agreement do not result in the General 
     Partners being allocated at least one percent of all material items of 
     income, gain, loss, deduction or credit, the General Partner shall be 
     allocated so much of those items as will cause it at all times during the
     existence of the Partnership to be allocated at least one percent of 
     those items.


                                     15

<PAGE>

     6.04   DISTRIBUTIONS UPON LIQUIDATION OF PARTNERSHIP.

            (a)  Upon liquidation of the Partnership the assets of the 
     Partnership shall be distributed no later than the later of 90 days 
     after the date of such liquidation or the end of the Partnership s 
     taxable year in which the liquidation occurs and shall be applied in the 
     following order of priority:

                 (i)     To the payment of debts and liabilities of the 
            Partnership (including amounts owed to Partners or former 
            Partners);

                 (ii)    Unless inconsistent with Treasury Regulation Section 
            1.704-1(b)(2)(ii)(b), or any successor provision, to set up any 
            reserves which the General Partner deems reasonably necessary for 
            contingent or unforeseen liabilities or obligations of the 
            Partnership arising out of or in connection with the business of 
            the Partnership; and

                 (iii)   After all Capital Account adjustments for the 
            Partnership s taxable year in which the liquidation occurs 
            (including without limitation adjustments required under Treasury 
            Regulation Section 1.704-1(b)(2)(iv)(e), relating to 
            distributions in kind), to the Partners in accordance with each 
            Partner's positive Capital Account balance in the same order as 
            distributions are made in Section 6.02.

            (b)  If a transfer of an interest in the Partnership results in a 
     termination of the Partnership for federal income tax purposes under 
     Section 708(b)(1)(B) of the Code (or any successor provision thereto), 
     Section 6.04(a) shall not apply and a Partner's portion of the 
     constructive liquidating distribution of the Partnership s assets that 
     is deemed to occur under Treasury Regulation Section 1.708-1(b)(1)(iv) 
     (or any similar or successor provision) shall be determined in 
     accordance with the Capital Accounts of the Partners as determined after 
     taking into account all Capital Account adjustments for the 
     Partnership's taxable year ending on the date of such termination.

     6.05   LIQUIDATION OF PARTNERS INTEREST.  Except as may otherwise be 
required in this Agreement, if a Partner's interest in the Partnership is to 
be liquidated, liquidating distributions shall be made in accordance with the 
positive Capital Account balance of such Partner, as determined after taking 
into account all Capital Account adjustments for the Partnership's taxable 
year during which such liquidation occurs, by the end of the taxable year, or 
if later, within ninety (90) days after the date of such liquidation. If a 
Partner's interest is to be liquidated, it has a negative Capital Account 
balance and it is obligated to restore some or all of its negative Capital 
Account upon liquidation of the Partnership pursuant to Section 3.06, then 
such Partner shall, by the end of the taxable year or, if earlier, within 
ninety (90) days of the date of such liquidation, contribute cash to the 
Partnership in an amount equal to its negative Capital Account or such lesser 
amount as provided in Section 3.06. Where a Partner's interest is to be 
liquidated by a series of distributions, such Partner's interest shall not be 
considered liquidated until the final distribution has been made. For 
purposes of this Section 6.06, a liquidation of a Partner's interest in the 
Partnership means the termination of the


                                     16

<PAGE>

Partner s entire interest in the Partnership by means of a distribution or 
series of distributions to the Partner by the Partnership.

     6.06   IN-KIND DISTRIBUTIONS.

            (a)  Prior to a distribution of property (other than cash and 
     other than in complete liquidation of the Partnership or a Partner's 
     interest in the Partnership), the Capital Accounts of the Partners shall 
     be adjusted to reflect the manner in which the unrealized income, gain, 
     loss and deduction inherent in such property (that has not previously 
     been reflected in the Capital Accounts), would be allocated among the 
     Partners if there were a taxable disposition of the property on the date 
     of distribution.

            (b)  If the distribution of property (other than cash) is to a 
     Partner in complete liquidation of the Partner's interest in the 
     Partnership or in liquidation of the Partnership, prior to such 
     distribution, the Capital Accounts of all the Partners shall be adjusted 
     to reflect the manner in which the unrealized income, gain, loss and 
     deduction inherent in all the Partnership's property (that has not 
     previously been reflected in the Capital Accounts) would be allocated 
     among the Partners if there was a taxable disposition of all such 
     property on the date of the liquidating distribution.

            (c)  If any assets of the Partnership are distributed to the 
     Partners in kind, the Partners shall own and hold the same as tenants in 
     common.

     6.07   ADDITIONAL TAX ALLOCATION PROVISIONS.

            (a)  For income tax purposes, allocations of income and loss (and 
     items thereof) shall be made in accordance with the foregoing 
     allocations of income, gain and loss for financial purposes.

            (b)  Notwithstanding anything to the contrary contained herein, 
     items of income, gain, loss and deduction with respect to property, 
     other than cash, contributed to the Partnership by a Partner or with 
     respect to an adjustment to the Partners' Capital Accounts to reflect a 
     revaluation of the Network, shall be allocated among the Partners so as 
     to take into account the variation between the basis of the property to 
     the Partnership and its fair market value at the time of contribution 
     or, in the case of a revaluation of the Network, the variation between 
     the basis of the Network to the Partnership and its fair market value as 
     of the date of revaluation, as provided in Section 704(c) of the Code 
     and Regulations thereunder and Treasury Regulations Section 
     1.704-1(b)(2)(iv)(g).

            (c)  As between a Partner who has transferred all or part of its
     interest in the Partnership and its transferee, all items of income, gain,
     deduction and loss, for any year shall be apportioned on the basis of the
     number of days in each such year that each was the holder of such interest
     (making any adjustments necessary to comply with the provisions of Section
     706(d)(2) of the Code), without regard to the results of the Partnership's
     operations during the period before and after the date of such transfer,
     provided that if both the


                                      17

<PAGE>

     transferor and transferee consent thereto a special closing of the books 
     shall be had as of the effective date of such transfer and the 
     apportionment of items of income and gain, and deduction and loss, shall 
     be made on the basis of actual operating results. Notwithstanding the 
     above, gain or loss resulting from a Major Capital Event or a 
     Liquidating Event shall be allocated only to those persons who are 
     Partners as of the date on which such transaction is consummated.


                                     ARTICLE VII

                                    FISCAL MATTERS

     7.01   FISCAL YEAR. The fiscal year of the Partnership shall be as 
required under Section 706 of the Code.

     7.02   BOOKS AND RECORDS. The General Partner shall keep, or cause to be 
kept, at the expense of the Partnership, full and accurate books and records 
of all transactions of the Partnership in accordance with accepted accounting 
principles, consistently applied. Among such books and records the General 
Partner shall keep:

            (a)  A current list of the following items:


                 (i)     the name and mailing address of each Partner,
          separately identifying in alphabetical order the General Partners and
          the Limited Partners:


                 (ii)    the last known street address of the business or
          residence of each General Partner; and


                 (iii)   the Partnership Interest of each Partner.


            (b)  Copies of the Partnership's federal, state and local tax 
     returns for each of the Partnership's six most recent tax years;

          (c)  A copy of this Agreement, the Certificate, all amendments and 
     restatements and executed copies of any powers of attorney under which 
     this Agreement, the Certificate and any and all Amendments or 
     restatements thereto have been executed. All of such books and records 
     shall, at all times, be maintained at the principal place of business of 
     the Partnership and the Limited Partners shall have the right to inspect 
     and copy any of them, at their own expense, during normal business hours.

     7.03   REPORTS AND STATEMENTS.

            (a)  Within 90 days after the end of each fiscal year of the 
     Partnership, the General Partner shall, at the expense of the 
     Partnership, cause to be delivered to each Limited Partner such 
     financial statements and such other information as the General Partner 
     believes to be

                                      18

<PAGE>

     necessary for the Limited Partners to be advised of the financial status 
     and results of operations of the Partnership.

            (b)  The General Partner shall report to the Limited Partners any 
     significant development materially adversely affecting the Partnership, 
     its business, property or assets, as soon as practicable following the 
     occurrence of such development.

          (c)  The General Partner shall provide to the Guarantors a copy of 
     the financial statements which the Partnership provides to the 
     Construction Lender, contemporaneously with the delivery of such 
     documents to the Construction Lender, and such other information which 
     is provided to the Limited Partners.

     7.04   AUDIT. A Limited Partner may require an audit of the books and 
records of the Partnership to be conducted at any time (but not more 
frequently than once each calendar year). Any such audit so required shall be 
conducted by auditors selected by such Limited Partner at the expense of the 
Partnership.

     7.05   TAX RETURNS. The General Partner shall cause to be prepared and 
delivered to the Partners on or before seventy-five days following the end of 
each fiscal year, at the expense of the Partnership, all federal and any 
required state and local income tax returns for the Partnership for the 
preceding fiscal year. In the event the Partnership's income tax returns are 
audited, the General Partner shall retain, at the expense of the Partnership, 
accountants and other professionals to participate in such audit in order to 
contest assertions by the auditing agent that may be materially adverse to 
the Partners.

     7.06   BANK ACCOUNTS. The General Partner, in the name of the 
Partnership, shall open and maintain a special bank account or accounts in a 
bank or savings and loan association, the deposits of which are insured by an 
agency of the United States government, in which shall be deposited all 
fluids of the Partnership. There shall be no commingling of the property and 
assets of the Partnership with the property and assets of any other party.

     7.07   TAX ELECTIONS. The General Partner shall be entitled to determine 
all Federal income tax elections available to the Partnership.


                                  ARTICLE VIII
                                    TRANSFERS

     8.01   RESTRICTION ON TRANSFERS. Except as expressly permitted under the 
terms and provisions of this Article VIII, no Partnership Interest shall be 
Transferred without the written consent of the General Partner.

     8.02   PERMITTED SALES AFTER RIGHT OF FIRST REFUSAL IS GIVEN. Except for 
a Transfer from one Partner to another in which case this Section does not 
apply, if a Partner receives an offer (the "Offer") for the purchase of all 
or a part of such Partner's Partnership Interest (the "Offered


                                      19

<PAGE>

Interest"), then the Partner who received such Offer (the "Selling Partner") 
shall, if it wishes to accept the Offer, promptly forward a true and correct 
copy thereof to the other Partners (whether one or more, the "Non-Selling 
Partner") within ten (10) days of the date of the Offer. The Non-Selling 
Partner shall have the exclusive right and option for sixty (60) days 
following the receipt of said Offer (unless extended as provided in the last 
paragraph hereof) to purchase all, but not less than all, of the Offered 
Interest on the terms and conditions set forth in the Offer. The Non-Selling 
Partner shall exercise its option to purchase the Offered Interest by actual 
delivery to the Selling Partner, within the aforesaid sixty (60) day period, 
written notice of such election. The Non-Selling Partner shall be deemed to 
have elected not to purchase the Offered Interest if it fails to timely 
provide written acceptance. Each Non-Selling Partner who elects to so 
purchase the Offered Interest pursuant to the Offer (the "Electing Partner") 
shall have the right to purchase that proportion of the Offered Interest 
which the amount such Electing Partner elects to purchase bears to the total 
amount which the Electing Partners elected to purchase. The Electing Partner 
shall be obligated to close no later than ninety (90) days after the date of 
the Offer.

     If the Non-Selling Partner does not elect to purchase all of the Offered 
Interest, the Selling Partner may sell the Offered Interest; provided, 
however, that the sale (i) shall not be made at a price lower than the price 
offered to the Non-Selling Partner, (ii) is not made to any person other than 
the original offeror, (iii) is on the same terms and conditions as those 
specified in the Offer, and (iv) is consummated within ninety (90) days after 
the lapse of all options arising in connection with the offer.

     If the offeror, terms or conditions of the proposed sale are changed or 
such Offered Interest has not been sold prior to the lapse of the aforesaid 
ninety (90) day period, the Selling Partner must make a new offer, pursuant 
to the procedures in this Section 8.02, to the Non-Selling Partner prior to 
selling such Offered Interest. If the Non-Selling Partner elects to purchase 
all of the Offered Interest, then the closing of said purchase shall take 
place at the office of the Partnership.

     Notwithstanding anything else to the contrary in this Section 8.02, if 
the Selling Partner is Thompson or a member of the Thompson Family, then 
Thompson and the Thompson Family shall have the first and exclusive right to 
acquire the Offered Interest prior to any other Partner having such right. If 
neither Thompson nor a member of the Thompson Family elects to purchase all 
of the Offered Interest within sixty (60) days following receipt of the 
Offer, then the remaining Partners shall have the right for twenty (20) days 
following such sixty (60) day period to acquire the Offered Interest.

     8.03   PERMITTED TRANSFERS. Notwithstanding anything else in this 
Agreement to the contrary:

            (a)  a Partner may Transfer all or any portion of a Partnership 
     Interest to another Partner without the consent of any Partner; and

          (b)  a Guarantor may Transfer all or any portion of the Partnership 
     Interest which it receives in exchange for its Guaranty, or pursuant to 
     Section 3.03 or 4.11, to an Affiliate without the consent of any Partner.


                                     20

<PAGE>

     8.04   ASSUMPTION BY TRANSFEREE. Any transferee to whom all or any part 
of a Partnership Interest may be Transferred pursuant to this Agreement shall 
take such Partnership Interest subject to all of the terms and conditions of 
this Agreement and shall not be considered to have title thereto until said 
transferee shall have accepted and assumed the terms and conditions of this 
Agreement by a written agreement to that effect delivered to the other 
Partners, at which time such transferee shall be admitted as a substitute 
Partner and shall succeed to all rights of its transferor except as such 
rights may be otherwise limited by other provisions of this Agreement.

     8.05   COST OF TRANSFERS. The transferor and, if it fails or refuses to 
do so, then the transferee, of any Partnership Interest shall reimburse the 
Partnership for all costs incurred by the Partnership resulting from any 
Transfer.

     8.06   EFFECT OF ATTEMPTED DISPOSITION IN VIOLATION OF THIS AGREEMENT. 
Any attempted Transfer of any Partnership Interest in breach of this 
Agreement shall be null and void and of no effect whatever.


                                      ARTICLE IX

                        RESIGNATION, WITHDRAWAL AND REMOVAL OF
                  GENERAL PARTNER: ADMISSION OF NEW GENERAL PARTNER

     9.01   VOLUNTARY RESIGNATION OR WITHDRAWAL OF THE GENERAL PARTNER. The 
General Partner may not withdraw its interest in the Partnership, Transfer 
its interest to any Person or admit any Person as a substitute General 
Partner except as provided in Article VIII or this Article IX.

     9.02   SUBSTITUTE AND ADDITIONAL GENERAL PARTNERS. To the extent 
permitted under Texas law, the General Partner may at any time designate 
additional Persons to be General Partners, whose interest in the Partnership 
shall be such as shall be agreed upon by the General Partner and such 
additional General Partners, so long as the Partnership Interest of the 
Limited Partners shall not be affected thereby.

     9.03   ADMISSION OF A SUCCESSOR GENERAL PARTNER. Any successor Person 
shall be admitted as a General Partner of the Partnership if the following 
terms and conditions are satisfied:

            (a)  The successor Person shall have accepted and assumed all the 
     terms and provisions of this Agreement and the Shareholders' Agreement 
     governing the General Partner;

            (b)  If the successor Person is a corporation, it shall have 
     provided counsel for the Partnership with a certified copy of a 
     resolution of its Board of Directors authorizing it to become a General 
     Partner under the terms and conditions of this Agreement; and

            (c)  The successor Person shall have executed this Agreement and 
     such other documents or instruments as may be required or appropriate in 
     order to effect the admission of such Person as a General Partner.


                                      21

<PAGE>

                                   ARTICLE X

                                  DISSOLUTION

     10.01  DISSOLUTION.

            (a)  It is the intention of the Partners that the business of the 
Partnership be continued by the Partners, or those remaining, pursuant to the 
provisions of this Agreement, notwithstanding the occurrence of any event 
which would result in a statutory dissolution of the Partnership pursuant to 
the laws of the State of Texas, and no Partner shall be released or relieved 
of any duty or obligation hereunder by reason thereof; provided, however, 
that the business of the Partnership shall be terminated, its affairs 
wound-up and its property and assets distributed in liquidation on the 
earlier to occur of:

                 (i)    December 31, 2025;

                 (ii)   a determination by the General Partner that the
            business of the Partnership should be terminated;

                 (iii)  the bankruptcy or insolvency of the Partnership;

                 (iv)   subject to the provisions of paragraph (b) below, the
            death, incompetency, bankruptcy, insolvency, withdrawal or removal
            from the Partnership of the last remaining General Partner;

                 (vi)   the date upon which a Liquidating Event occurs, and all
            payments have been received;

                 (vii)  entry of a decree of judicial dissolution; or

                 (viii) the date voting control of the General Partner is no
            longer held by Thompson, Langdale, a family member of either one or
            an Affiliate of either one.

     For purposes of this Agreement, bankruptcy shall be deemed to have occurred
     when the party in question files a petition under any section or chapter of
     the Federal Bankruptcy Code, as amended, or becomes subject to an order for
     relief under Title 11 of the United States Code Annotated or is declared
     bankrupt or insolvent in a state bankruptcy or insolvency hearing.

            (b)  Upon the occurrence of any event set forth in subparagraph (iv)
     of paragraph (a) above with respect to the last remaining General Partner,
     the business of the Partnership shall be continued pursuant to the
     provisions of this Agreement if, within a period of 90 days from the date
     of such occurrence, each of the Limited Partners shall elect in writing
     that it be so continued and shall designate one or more parties to be
     admitted to the Partnership as a General Partner. Any such party shall upon
     admission to the Partnership succeed to all of the rights and powers of a
     General Partner hereunder, provided that the former General 


                                       22

<PAGE>

     Partner shall retain and be entitled to its share of profits, losses,
     distributions, and capital associated with the General Partner's
     Partnership Interest.

     10.02  WIND-UP OF AFFAIRS.  As expeditiously as possible following the 
occurrence of an event giving rise to a termination of the business of the 
Partnership, the General Partner (or a special liquidator who may be 
appointed by the Limited Partners if the termination results from a 
circumstance described in Section 10.01 (a)(iv) above relative to the General 
Partners) shall wind-up the affairs of the Partnership, sell its property and 
assets for cash at the highest price reasonably obtainable, distribute the 
proceeds in accordance with Section 6.04 in liquidation of the Partnership 
and file a certificate of cancellation with the Secretary of State of Texas.

                                  ARTICLE II

                                 MISCELLANEOUS

     11.01  AMENDMENTS.  Unless otherwise expressly provided herein, this 
Agreement may not be amended without the written consent of the General 
Partner and a Majority in Interest of the Limited Partners.

     11.02  OTHER ACTIVITIES.  Any Partner may engage or possess an interest 
in other business ventures of every nature and description, independently or 
with others, including, without limitation, the acquisition, construction, 
ownership, leasing, operation and management of projects similar to the 
Partnership's business), and neither the Partnership nor any of the other 
Partners shall have any right by virtue of this Agreement in and to such 
other ventures or to the income or property derived therefrom.

     11.03  PARTITION.  No Partner shall be entitled to a partition of the 
Network or any other property or assets of the Partnership, notwithstanding 
any provision of law to the contrary.

     11.04  NOTICES.  Any notice required or permitted to be delivered to any 
Partner under the provisions of this Agreement shall be deemed delivered, 
whether actually received or not, when deposited in a United States Postal 
Service depository, postage prepaid, registered or certified, return receipt 
requested, and addressed to the Partner at the address specified on the 
signature pages hereof, or such other address as shall be specified by 
written notice delivered to the General Partner.

     11.05  PROVISIONS SEVERABLE.  Every provision of this Agreement is 
intended to be severable and, if any term or provision hereof is illegal or 
invalid for any reason whatsoever, such illegality or invalidity shall not 
affect the validity of the remainder of this Agreement.

     11.06  COUNTERPARTS.  This Agreement, and any amendments hereto, may be 
executed in counterparts, each of which shall be deemed an original, and such 
counterparts shall constitute but one and the same instrument.


                                       23

<PAGE>

     11.07  HEADINGS.  The headings of the various Sections are intended 
solely for convenience of reference, and shall not be deemed or construed to 
explain, modify or place any construction upon the provisions hereof.

     11.08  SUCCESSORS AND ASSIGNS.  This Agreement and any amendments hereto 
shall be binding upon and, to the extent expressly permitted by the 
provisions hereof, shall inure to the benefit of the Partners and their 
respective heirs, legal representatives, successors and assigns.

     11.09  APPLICABLE LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND 
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS.

     IN WITNESS WHEREOF, the Partners have executed this Agreement this 31 
day of October, 1996 effective for all purposes as of July 1, 1996.


                                       GENERAL PARTNER:

                                       CAPROCK SYSTEMS, INC.
                                       a Texas corporation


                                       By: /s/ Jere W. Thompson, Jr.
                                           ---------------------------
                                           Name: Jere W. Thompson, Jr.
                                           Its:  President


                                           Address: 13455 Noel Road
                                                    Suite 1925
                                                    Dallas, Texas 75240


                                       24

<PAGE>

                        LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of, 
that certain Second Amended and Restated Agreement of Limited Partnership of 
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be 
bound by, and perform in accordance with, such Partnership Agreement.


                                       LIMITED PARTNER:


                                       /s/ Michael D. Thompson
                                       ---------------------------
                                       Name: Michael D. Thompson


                                       Address:   3037 Milton
                                                  Dallas, TX 75205

                                       Facsimile: (214) 841-6590


                                       25

<PAGE>

                        LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of, 
that certain Second Amended and Restated Agreement of Limited Partnership of 
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be 
bound by, and perform in accordance with, such Partnership Agreement.


                                       LIMITED PARTNER:


                                       /s/ Patrick J. Thompson
                                       -----------------------------
                                       Name: Patrick J. Thompson


                                       Address:   5534 Northmoor Dr.
                                                  Dallas, TX 75230

                                       Facsimile: (817) 251-0796


                                       26

<PAGE>

                        LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of, 
that certain Second Amended and Restated Agreement of Limited Partnership of 
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be 
bound by, and perform in accordance with, such Partnership Agreement.


                                       LIMITED PARTNER:


                                       /s/ Margaret T. Nelson
                                       ---------------------------
                                       Name: Margaret T. Nelson


                                       Address:   4425 Hyer
                                                  Dallas, 75205

                                       Facsimile:
                                                  ----------------


                                       27

<PAGE>

                        LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of, 
that certain Second Amended and Restated Agreement of Limited Partnership of 
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be 
bound by, and perform in accordance with, such Partnership Agreement.


                                       LIMITED PARTNER:


                                       /s/ Kimberly T. Thornton
                                       ------------------------------
                                       Name: Kimberly T. Thornton


                                       Address:   P.O. Box 1345
                                                  Telluride, CO 81435

                                       Facsimile: (970) 728-5809


                                       28

<PAGE>

                        LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of, 
that certain Second Amended and Restated Agreement of Limited Partnership of 
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be 
bound by, and perform in accordance with, such Partnership Agreement.


                                       LIMITED PARTNER:


                                       /s/ Christopher D. Thompson
                                       -----------------------------
                                       Name: Christopher D. Thompson


                                       Address:   3121 Amherst
                                                  Dallas, TX 75225

                                       Facsimile:
                                                  ------------------


                                       29

<PAGE>

                      LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Second Amended and Restated Agreement of Limited Partnership of
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be
bound by, and perform in accordance with, such Partnership Agreement.




                              LIMITED PARTNER:

                              /s/ David E. Thompson
                              ---------------------------------
                              Name:     David E. Thompson

                              Address:  4409 Shoal Creek Blvd.
                                        -----------------------
                                        Austin TX 78756
                                        -----------------------

                              Facsimile: (512) 467-2191
                                        -----------------------



                                    30
<PAGE>


                    LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Second Amended and Restated Agreement of Limited Partnership of
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be
bound by, and perform in accordance with, such Partnership Agreement.




                              LIMITED PARTNER:
                              The Florida Company, a Texas Corporation

                              By: /s/ Joe C. Thompson, Jr.
                                  -----------------------------
                              Name: Joe C. Thompson, Jr.
                                   ----------------------------
                              Its: President
                                   ----------------------------

                              Address:  2960 Anode Lane
                                        -----------------------
                                        Dallas, TX 75220
                                        -----------------------

                              Facsimile: 214 / 357-3490
                                        -----------------------



                               31


<PAGE>


                      LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Second Amended and Restated Agreement of Limited Partnership of
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be
bound by, and perform in accordance with, such Partnership Agreement.



                              LIMITED PARTNER:


                              /s/ Joe C. Thompson, Jr.
                              ---------------------------------
                              Name:     Joe C. Thompson, Jr

                              Address:  2960 Anode Lane
                                        -----------------------
                                        Dallas, TX 75220
                                        -----------------------

                              Facsimile: 214 / 357-3490
                                        -----------------------



                           32
<PAGE>


                      LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Second Amended and Restated Agreement of Limited Partnership of
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be
bound by, and perform in accordance with, such Partnership Agreement.




                              LIMITED PARTNER:

                              THE HAYDEN COMPANY
                              a Texas corporation

                              By: /s/ John P. Thompson
                                  -----------------------------
                              Name: John P. Thompson
                                   ----------------------------
                              Its: President
                                  -----------------------------

                              Address: Two Turtle Creek Village
                                       ------------------------
                                       3838 Oak Lawn Ave., Suite 1850
                                       ------------------------
                                       Dallas, TX 75219-4519
                                       ------------------------

                              Facsimile: (214) 443-9299
                                        -----------------------



                              33
<PAGE>


                      LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Second Amended and Restated Agreement of Limited Partnership of
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be
bound by, and perform in accordance with, such Partnership Agreement.




                              LIMITED PARTNER:

                              /s/ Peggy Thompson
                              ---------------------------------
                              Name:     Peggy Thompson

                              Address: 4217 Armstrong Parkway
                                       ------------------------
                                       Dallas, TX 75205
                                       ------------------------

                              Facsimile: 
                                        -----------------------



                                   34
<PAGE>


                      LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Second Amended and Restated Agreement of Limited Partnership of
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be
bound by, and perform in accordance with, such Partnership Agreement.




                              LIMITED PARTNER:


                              /s/ Mark Langdale
                              ---------------------------------
                              Name:     Mark Langdale

                              Address:  5950 Berkshire #990
                                        -----------------------
                                        Dallas, TX 75225
                                        -----------------------

                              Facsimile: 214-891-3175
                                        -----------------------



                                 35
<PAGE>



                     LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Second Amended and Restated Agreement of Limited Partnership of
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be
bound by, and perform in accordance with, such Partnership Agreement.




                              LIMITED PARTNER:


                              /s/ Jere W. Thompson, Sr.
                              ---------------------------------
                              Name:     Jere W. Thompson, Sr.

                              Address: Two Turtle Creek Village
                                       ------------------------
                                       3838 Oak Lawn Ave. Suite 1850
                                       ------------------------
                                       Dallas, TX 75219-4519
                                       ------------------------

                              Facsimile: 214 / 443-9299
                                        -----------------------



                                   36
<PAGE>


                      LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Second Amended and Restated Agreement of Limited Partnership of
CapRock Fiber Network, Ltd. By execution hereof, the undersigned agrees to be
bound by, and perform in accordance with, such Partnership Agreement.




                              LIMITED PARTNER:


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

                              Address: 13455 Noel Road, Ste 1925
                                       ------------------------
                                       Dallas, TX 75240
                                       ------------------------

                              Facsimile: (872) 788-4243
                                        -----------------------



                                    37

<PAGE>

                                   EXHIBIT "A"
                        
                        THE PARTNERS; PARTNERSHIP INTERESTS
<TABLE>
<CAPTION>
The General Partner:                   Partnership Interests:
     <S>                                   <C>
     CapRock Systems, Inc.                   1.00%

The Limited Partners:

     Michael D. Thompson                     1.55%
     Patrick J. Thompson                     1.55%
     Margaret T. Nelson                      1.55%
     Kimberly T. Thornton                    1.55%
     Christopher D. Thompson                 1.55%
     David.E. Thompson                       1.55%
     The Florida Company                     2.67%
     Joe C. Thompson, Jr.                    2.67%
     The Hayden Company                      5.34%
     Peggy Thompson                          6.22%
     Jere W. Thompson, Sr.                   8.87%
     Mark Langdale                          46.79%
     Jere W. Thompson, Jr.                  17.14%
                                           ------
                                           100.00%
</TABLE>


                                      38
<PAGE>

                                 AMENDMENT NO. 1 TO THE
                              SECOND AMENDED AND RESTATED
                           AGREEMENT OF LIMITED PARTNERSHIP
                            OF CAPROCK FIBER NETWORK, LTD.

     This Amendment No. 1 (this "AMENDMENT") to the Second Amended and 
Restated Agreement of Limited Partnership (the "AGREEMENT") of CapRock Fiber 
Network, Ltd., a Texas limited partnership (the "PARTNERSHIP"), is entered 
into by and among CapRock Systems, Inc., a Texas corporation as the general 
partner of the Partnership (the "GENERAL PARTNER"), and Michael D. Thompson, 
Patrick J. Thompson, Margaret T. Nelson, Kimberly T Thornton, Christopher D. 
Thompson, David E. Thompson, The Florida Company, a Texas corporation, Joe C. 
Thompson, Jr., The Hayden Company, a Texas corporation, Peggy Thompson, Jere 
W. Thompson, Sr., Mark Langdale, Jere W. Thompson, Jr., and Dan Jones 
(individually, a "LIMITED PARTNER" and collectively, the "LIMITED PARTNERS"). 
The General Partner and the Limited Partners are sometimes individually 
referred to herein as a "PARTNER" and sometimes collectively referred to 
herein as the "PARTNERS".

                                      BACKGROUND

     The Partners entered into that certain Agreement of Limited Partnership of
CapRock Fiber Network, Ltd., which was amended effective as of May 31, 1993, and
further amended by the terms of the Agreement effective as of July 1, 1996.

     The Partners recognize the dedicated service, leadership, and other
contributions of Dan Jones ("JONES") to the Partnership and, therefore, desire
to amend the Agreement, effective as of September 1, 1997, to admit Jones as a
Limited Partner upon the terms and conditions of this Amendment.

     Jones desires to become a Limited Partner upon the terms and conditions of
this Amendment and the Agreement.

     THEREFORE, in consideration of the foregoing, and other good and valuable
consideration, the receipt and sufficiency of which all parties acknowledge, the
parties hereto agree as follows:

                              AMENDMENT TO THE AGREEMENT

     1.   The definition of "Limited Partners" contained in SECTION 1.01 of the
Agreement is hereby deleted and replaced in its entirety by the following:

          "Limited Partners" shall mean Michael D. Thompson, Patrick J.
     Thompson, Margaret T. Nelson, Kimberly T. Thornton, Christopher D.
     Thompson, David E. Thompson, The Florida Company, Joe C. Thompson, Jr., The
     Hayden Company, Peggy Thompson, Jere W. Thompson, Sr., Mark Langdale, Jere
     W. Thompson, Jr. and Dan Jones.

<PAGE>

     2.   SECTION 2.01(b) is hereby deleted and replaced in its entirety by the
following:

          "(b) As of the effective date of this Agreement, Hayden, Florida and
     Jodie Thompson are admitted to the Partnership as Limited Partners."

     3.   SECTION 2.01 is hereby amended by adding the following subsection (c):

          "(c) As of the effective date of Amendment No 1 to this Agreement, Dan
     Jones is hereby admitted to the Partnership as a Limited Partner, and the
     Partnership Interests of the Partners shall be as set forth in Exhibit "A"
     to the Amendment No. 1 to this Agreement."

     4.   The Agreement is hereby further amended by adding the following
ARTICLE XII:

                                    "ARTICLE XII
                                 MERGER AND EXCHANGE

          12.01     MERGER.  The General Partner, on behalf of and in the name
     of the Partnership, may adopt a plan of merger pursuant to which the
     Partnership may merge with one or more domestic or foreign partnerships or
     other entities.

          12.02     EXCHANGE.  The General Partner, on behalf of and in the name
     of the Partnership, may adopt a plan of exchange by which a domestic or
     foreign partnership, or other entity acquires all of the outstanding
     Partnership Interests of the Partnership in exchange for cash or securities
     of the acquiring domestic or foreign partnership."

     5.   Each of the remaining articles, sections, terms, and provisions of the
Agreement shall remain in full force and effect, and shall be enforceable
against the Partners in accordance with their terms.

     6.   Capitalized terms not otherwise defined in this Amendment shall have
the meanings assigned to such terms in the Agreement.

     IN WITNESS WHEREOF, the Partners have executed this Amendment to be
effective the 1st day of September, 1997.


                     [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

<PAGE>


Dated to be effective as of September 1, 1997.

                         GENERAL PARTNER:

                         CAPROCK SYSTEMS, INC.,
                         a Texas corporation



                         By:       /s/ Jere Thompson, Jr.
                            ---------------------------------------------
                         Name:     Jere Thompson, Jr.
                         Title:    President

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE


     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


                              /s/ Michael D. Thompson
                              ---------------------------
                                  Michael D. Thompson

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


                              /s/ Patrick J. Thompson
                              --------------------------------
                                  Patrick J. Thompson

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


                              /s/ Margaret T. Nelson
                              --------------------------------
                                  Margaret T. Nelson

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


                              /s/ Kimberly T. Thornton
                              -----------------------------------
                                  Kimberly T. Thornton

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


                              /s/ Christopher D. Thompson
                              ------------------------------------------
                                  Christopher D. Thompson

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


                              /s/ David E. Thompson 
                              -------------------------------------
                                  David E. Thompson

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


                              /s/ Joe C. Thompson, Jr.
                              ----------------------------------------
                                  Joe C. Thompson, Jr.


<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


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

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


                              /s/ Margaret Thompson
                              -------------------------------------
                                   Margaret Thompson

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


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

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


                              /s/ Dan Jones
                              ----------------------------------
                                  Dan Jones

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:

                              THE FLORIDA COMPANY,
                              a Texas corporation


                              By:/s/ Joe C. Thompson, Jr.
                                 -----------------------------------------
                              Name:  Joe C. Thompson, Jr.
                              Title: President

<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:

                              THE HAYDEN COMPANY,
                              a Texas corporation


                              By: /s/ John P. Thompson
                                 ----------------------------------
                              Name:  John P. Thompson
                              Title: President


<PAGE>

                            LIMITED PARTNER SIGNATURE PAGE

     This Limited Partner Signature Page is attached to, and made a part of,
that certain Amendment No. 1 to the Second Amended and Restated Agreement of
Limited Partnership of CapRock Fiber Network, Ltd. By execution hereof, the
undersigned agrees to be bound by, and perform in accordance with, the Second
Amended and Restated Agreement of Limited Partnership of CapRock Fiber Network,
Ltd. as amended by Amendment No. 1.

     Dated to be effective as of September 1, 1997.

                              LIMITED PARTNER:


                              /s/ Mark Langdale
                              ---------------------------------------
                                  Mark Langdale

<PAGE>

                AMENDMENT NO. 1 TO THE SECOND AMENDED AND RESTATED
          AGREEMENT OF LIMITED PARTNERSHIP OF CAPROCK FIBER NETWORKS LTD.

                                      EXHIBIT A

<TABLE>
<CAPTION>
GENERAL PARTNER:                      PARTNERSHIP INTEREST:

     <S>                                    <C>
     CapRock Systems, Inc.                   1.72375%


LIMITED PARTNERS:

     Mark Langdale                          38.99919%
     The Hayden Company                      3.94493%
     Joe C. Thompson, Jr                     1.97246%
     The Florida Company                     1.97246%
     Dan B. Jones                            1.50000%
     Jere W. Thompson, Sr.                   6.55635%
     Margaret D. Thompson                    4.58389%
     Michael D. Thompson                     1.14597%
     Jere W. Thompson, Jr.                  31.87113%
     Patrick J. Thompson                     1.14597%
     Margaret T. Nelson                      1.14597%
     Kimberly T. Thornton                    1.14597%
     Christopher D. Thompson                 1.14597%
     David E. Thompson                       1.14597%

Total:                                     100.00000%

</TABLE>

<PAGE>

                                CONTRIBUTION AGREEMENT
                                    AND AMENDMENT


     This Contribution Agreement (the "Agreement") is entered into by and 
among Jere W, Thompson, Jr. ("Jere"), Greenway Holdings, L.P., a Texas 
limited partnership (the "Partnership"), and for a limited purpose, CapRock 
Systems, Inc. ("CapRock Systems"), a Texas corporation and the general 
partner of CapRock Fiber Network, Ltd., a Texas limited Partnership ("CapRock 
Fiber") and a majority in interest of the limited partners in CapRock Fiber.

                                  R E C I T A L S:

     A.   Jere desires to contribute his entire ownership interest (the "CapRock
Fiber Interest") in CapRock Fiber to the Partnership in exchange for a 1%
general partnership interest and a 93.7289% limited partnership interest in the
Partnership (the "Partnership Interests"). The limited partnership interest will
be issued one-half to Jere, and the balance to his wife, Carolyn C. Thompson.

     B.   By execution of this Agreement, CapRock Systems and a majority in
interest of the limited partners evidence their consent to the contribution of
the CapRock Fiber Interest and amend the Second Amended and Restated Agreement
of Limited Partnership of CapRock Fiber Network, Ltd. (the "CapRock Fiber
Agreement") to reflect the change in partner.

                                 A G R E E M E N T:

     IT IS THEREFORE AGREED:

     1.   CONTRIBUTION. For valuable consideration, the receipt and sufficiency
of which are hereby acknowledged, Jere hereby agrees to contribute, and does
hereby contribute, to the Partnership, and the Partnership hereby agrees to
accept, and does hereby accept, the CapRock Fiber Interest.

     2.   CONSIDERATION. For and in consideration of the contribution of the
CapRock Fiber Interest by Jere to the Partnership, the Partnership hereby issues
to Jere and Carolyn the Partnership Interests.

     3.   AMENDMENT. By execution of this Agreement, CapRock Systems and a
majority in interest of the limited partners in CapRock Fiber, in accordance
with Section 11.01 of the CapRock Fiber Agreement, hereby amend the CapRock
Fiber Agreement to admit the Partnership to CapRock Fiber pursuant to this
Agreement. Exhibit "A" to the CapRock Fiber Agreement is amended and restated in
the manner set forth on Exhibit "A" attached to this Agreement.

     4.   AGREEMENT OF THE PARTNERSHIP. The Partnership hereby accepts, assumes
and agrees to be bound by, and to perform in accordance with, all of the terms
and provisions of the CapRock Fiber Agreement.

     5.   MISCELLANEOUS. This Agreement (i) shall be binding upon and shall
inure to the

<PAGE>

benefit of the parties hereto and their respective heirs, representatives, 
administrators, successors and assigns; (ii) may not in any way be altered, 
amended, modified or upgraded except by an instrument in writing signed by 
the parties hereto; (iii) and the rights of the parties hereto shall be 
governed by and construed in accordance with the laws of the State of Texas; 
and (iv) may be executed in multiple counterparts, each of which shall 
constitute an original.

          IN WITNESS WHEREOF, this Agreement is executed as of the 29th day of
December, 1997.

                              THE PARTNERSHIP;

                              GREENWAY HOLDINGS, L,P,
                              a Texas limited partnership



                              By: /s/ Jere W. Thompson, Jr.
                                 ------------------------------------
                                   Jere W. Thompson, Jr.
                              Its: General Partner

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



     By execution hereof, the undersigned, who constitute the general partner
and a majority in interest of the limited partners in CapRock Fiber, consent to
the contribution of the Partnership interests to the Partnership, and the
amendment of the CapRock Fiber Agreement.

CapRock Systems, Inc.



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


/s/ Mark Langdale
- -------------------------------------
    Mark Langdale



                                       2
<PAGE>

                                     EXHIBIT "A"

                         THE PARTNERS: PARTNERSHIP INTERESTS
<TABLE>
<CAPTION>
The General Partner:               Partnership Interests:
     <S>                                    <C>
     CapRock Systems, Inc                    1.72375%

The Limited Partners:

     Michael D. Thompson                     1.14597%
     Patrick J. Thompson                     1.14597%
     Margaret T. Nelson                      1.14597%
     Kimberly T. Thornton                    1.14597%
     Christopher D. Thompson                 1.14397%
     David E. Thompson                       1.14597%
     The Florida Company                     1.97246%
     Joe C. Thompson, Jr.                    1.97246%
     The Hayden Company                      3.94493%
     Peggy Thompson                          4.58389%
     Jere W. Thompson, Sr.                   6.55635%
     Mark Langdale                          38.99919%
     Greenway Holdings, L.P.                31.87113%
     Dan Jones                               1.50000%
                                           ---------
                                           100.00000%
</TABLE>

                                       3


<PAGE>
                                                                   Exhibit 99.12

                          CapRock Telecommunications Corp.
                      Computation of Earnings Per Common Share

<TABLE>
<CAPTION>
                                                 Basic Earnings Per Share
                                       ----------------------------------------------
                                           Six Months Ended      Three Months Ended     
                                                June 30,               June 30,          
                                       ----------------------------------------------
                                        1997          1998         1997        1998
                                        ----          ----         ----        ----
<S>                                 <C>           <C>          <C>           <C>
Numerator:
Net income                          $   428,715   $ 1,785,274  $   521,496      888,033     
                                    -----------   -----------  -----------   ----------
Denominator:

Denominator for basic earnings
  Per share - weighted average
  Shares outstanding                 10,398,954    10,398,954   10,398,954   10,398,954   
Effect of dilutive securities:
  Employee stock options                      -       177,047            -      177,341            
                                    -----------   -----------  -----------   ----------
                                     10,398,954    10,576,001   10,398,954   10,576,295   
                                    -----------   -----------  -----------   ----------
                                    -----------   -----------  -----------   ----------

     Basic earnings per share              $.04          $.17         $.05         $.09         
                                           ----          ----         ----         ----
                                           ----          ----         ----         ----

     Dilutive earnings per share           $.04          $.17         $.05         $.08         
                                           ----          ----         ----         ----
                                           ----          ----         ----         ----
</TABLE>



<PAGE>

ARTICLE 5

THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
UNAUDITED FINANCIAL STATEMENTS FOR THE SIX MONTHS ENDED JUNE 30, 1998 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.

RESTATED

MULTIPLIER 1,000
<TABLE>
<S>                             <C>
PERIOD-TYPE                   6-MOS
FISCAL-YEAR-END                          DEC-31-1998
PERIOD-START                             JAN-01-1998
PERIOD-END                               JUN-30-1998
CASH                                               2
SECURITIES                                         0
RECEIVABLES                                   11,833
ALLOWANCES                                     (293)
INVENTORY                                          0
CURRENT-ASSETS                                12,681
PP&E                                           4,739
DEPRECIATION                                 (2,004)
TOTAL-ASSETS                                  17,844
CURRENT-LIABILITIES                           12,974
BONDS                                              0
PREFERRED-MANDATORY                                0
PREFERRED                                          0
COMMON                                         1,459
OTHER-SE                                       (355)
TOTAL-LIABILITY-AND-EQUITY                    17,844
SALES                                              0
TOTAL-REVENUES                                32,416
CGS                                           23,910
TOTAL-COSTS                                   29,337
OTHER-EXPENSES                                     0
LOSS-PROVISION                                     0
INTEREST-EXPENSE                                 159
INCOME-PRETAX                                  2,919
INCOME-TAX                                     1,134
INCOME-CONTINUING                              1,785
DISCONTINUED                                       0
EXTRAORDINARY                                      0
CHANGES                                            0
NET-INCOME                                     1,785
EPS-PRIMARY                                      .17
EPS-DILUTED                                      .17
</TABLE>

<PAGE>
ARTICLE 5

THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE 
UNAUDITED FINANCIAL STATEMENTS FOR THE SIX MONTHS ENDED JUNE 30, 1998 AND 
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.

RESTATED
MULTIPLIER 1,000
<TABLE>
<S>                             <C>
PERIOD-TYPE                   6-MOS
FISCAL-YEAR-END                          DEC-31-1998
PERIOD-START                             JAN-01-1998
PERIOD-END                               JUN-30-1998
CASH                                             378
SECURITIES                                         0
RECEIVABLES                                    1,394
ALLOWANCES                                         0
INVENTORY                                          0
CURRENT-ASSETS                                 1,776
PP&E                                          11,894
DEPRECIATION                                   (991)
TOTAL-ASSETS                                  13,724
CURRENT-LIABILITIES                           13,011
BONDS                                              0
PREFERRED-MANDATORY                                0
PREFERRED                                          0
COMMON                                             0
OTHER-SE                                         543
TOTAL-LIABILITY-AND-EQUITY                    13,724
SALES                                              0
TOTAL-REVENUES                                 2,551
CGS                                              114
TOTAL-COSTS                                      727
OTHER-EXPENSES                                     0
LOSS-PROVISION                                     0
INTEREST-EXPENSE                                 409
INCOME-PRETAX                                  1,415
INCOME-TAX                                       545
INCOME-CONTINUING                                870
DISCONTINUED                                       0
EXTRAORDINARY                                      0
CHANGES                                            0
NET-INCOME                                       870
EPS-PRIMARY                                        0
EPS-DILUTED                                        0
</TABLE>


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