WORLD ACCESS INC /NEW/
S-4/A, EX-4.3, 2000-10-10
COMMUNICATIONS EQUIPMENT, NEC
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<PAGE>   1
                                                                    EXHIBIT 4.3



===============================================================================



                              WORLD ACCESS, INC.,

                                     Issuer

                                       TO

                           FIRST UNION NATIONAL BANK,

                                    Trustee

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


                                   Indenture


                          Dated as of December 7, 1999


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



                                  $300,000,000


                          13.25% Senior Notes due 2008



===============================================================================

<PAGE>   2




                               WORLD ACCESS, INC.


               Reconciliation and tie between Trust Indenture Act
              of 1939 and Indenture, dated as of December 7, 1999


<TABLE>
<CAPTION>
Trust Indenture
  Act Section                                                 Indenture Section
---------------                                               -----------------
<S>   <C>   <C>                                               <C>
(ss.) 310(a)(1).............................................                607
         (a)(2).............................................                607
         (b)   .............................................                608
(ss.) 312(c)................................................                701
(ss.) 313(a)................................................                702
(ss.) 313(c)................................................                703
(ss.) 314(a)................................................                703
         (a)(4).............................................             1008(a)
         (c)(1).............................................                102
         (c)(2).............................................                102
         (e)   .............................................                102
(ss.) 315(b)................................................                601
(ss.) 316(a)(last sentence)................................. 101 ("Outstanding")
         (a)(1)(A)..........................................           502, 512
         (a)(1)(B)..........................................                513
         (b)   .............................................                508
         (c)   .............................................              104(d)
(ss.) 317(a)(1).............................................                503
         (a)(2).............................................                504
         (b)   .............................................               1003
(ss.) 318(a)................................................                111
</TABLE>

 Note:   This reconciliation and tie shall not, for any purpose, be deemed to
         be a part of the Indenture.


<PAGE>   3


                              TABLE OF CONTENTS


<TABLE>
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<S>                                                                                                            <C>
PARTIES ..........................................................................................................1
RECITALS OF THE COMPANY...........................................................................................1

ARTICLE ONE                    DEFINITIONS AND OTHER PROVISIONS
                               OF GENERAL APPLICATION
         SECTION 101.          Definitions........................................................................1
         SECTION 102.          Compliance Certificates and Opinions..............................................22
         SECTION 103.          Form of Documents Delivered to Trustee............................................22
         SECTION 104.          Acts of Holders...................................................................23
         SECTION 105.          Notices, Etc., to Trustee, Company................................................24
         SECTION 106.          Notice to Holders; Waiver.........................................................24
         SECTION 107.          Effect of Headings and Table of Contents..........................................25
         SECTION 108.          Successors and Assigns............................................................25
         SECTION 109.          Separability Clause...............................................................25
         SECTION 110.          Benefits of Indenture.............................................................25
         SECTION 111.          Governing Law.....................................................................25
         SECTION 112.          Legal Holidays....................................................................26

ARTICLE TWO                    NOTE FORMS
         SECTION 201.          Forms Generally...................................................................26
         SECTION 202.          Restrictive Legends...............................................................27

ARTICLE THREE                  THE NOTES
         SECTION 301.          Title and Terms...................................................................27
         SECTION 302.          Denominations.....................................................................28
         SECTION 303.          Execution, Authentication, Delivery and Dating....................................28
         SECTION 304.          Temporary Notes...................................................................29
         SECTION 305.          Registration, Registration of Transfer and Exchange...............................30
         SECTION 306.          Mutilated, Destroyed, Lost and Stolen Notes.......................................31
         SECTION 307.          Payment of Interest; Interest Rights Preserved....................................31
         SECTION 308.          Persons Deemed Owners.............................................................32
         SECTION 309.          Cancellation......................................................................33
         SECTION 310.          Computation of Interest...........................................................33
         SECTION 311.          Book-Entry Provisions for Global Notes............................................33

ARTICLE FOUR                   SATISFACTION AND DISCHARGE
         SECTION 401.          Satisfaction and Discharge of Indenture...........................................34
         SECTION 402.          Application of Trust Money........................................................35
</TABLE>


                                       i
<PAGE>   4




<TABLE>
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<S>      <C>                   <C>                                                                             <C>
ARTICLE FIVE                   REMEDIES
         SECTION 501.          Events of Default.................................................................36
         SECTION 502.          Acceleration of Maturity; Rescission and Annulment................................38
         SECTION 503.          Collection of Indebtedness and Suits for Enforcement by Trustee...................38
         SECTION 504.          Trustee May File Proofs of Claim..................................................39
         SECTION 505.          Trustee May Enforce Claims Without Possession of Notes............................40
         SECTION 506.          Application of Money Collected....................................................40
         SECTION 507.          Limitation on Suits...............................................................41
         SECTION 508.          Unconditional Right of Holders to Receive Principal, Premium and
                               Interest..........................................................................41
         SECTION 509.          Restoration of Rights and Remedies................................................42
         SECTION 510.          Rights and Remedies Cumulative....................................................42
         SECTION 511.          Delay or Omission Not Waiver......................................................42
         SECTION 512.          Control by Holders................................................................42
         SECTION 513.          Waiver of Past Defaults...........................................................43
         SECTION 514.          Waiver of Stay or Extension Laws..................................................43

ARTICLE SIX                    THE TRUSTEE
         SECTION 601.          Notice of Defaults................................................................43
         SECTION 602.          Certain Rights of Trustee.........................................................44
         SECTION 603.          Trustee Not Responsible for Recitals or Issuance of Notes.........................45
         SECTION 604.          May Hold Notes....................................................................46
         SECTION 605.          Money Held in Trust...............................................................46
         SECTION 606.          Compensation and Reimbursement....................................................46
         SECTION 607.          Corporate Trustee Required; Eligibility...........................................47
         SECTION 608.          Resignation and Removal; Appointment of Successor.................................47
         SECTION 609.          Acceptance of Appointment by Successor............................................48
         SECTION 610.          Merger, Conversion, Consolidation or Succession to Business.......................49

ARTICLE SEVEN                  HOLDERS LISTS AND REPORTS BY
                               TRUSTEE AND COMPANY
         SECTION 701.          Disclosure of Names and Addresses of Holders......................................49
         SECTION 702.          Reports by Trustee................................................................49
         SECTION 703.          Reports by Company................................................................49

ARTICLE EIGHT                  CONSOLIDATION, MERGER, CONVEYANCE,
                               TRANSFER OR LEASE
         SECTION 801.          Company May Consolidate, Etc., Only on Certain Terms..............................50
         SECTION 802.          Successor Substituted.............................................................51
         SECTION 803.          Notes to Be Secured in Certain Events.............................................52
</TABLE>


                                      ii

<PAGE>   5



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<CAPTION>
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<S>      <C>                   <C>                                                                             <C>
ARTICLE NINE                   SUPPLEMENTAL INDENTURES
         SECTION 901.          Supplemental Indentures Without Consent of Holders................................52
         SECTION 902.          Supplemental Indentures with Consent of Holders...................................53
         SECTION 903.          Execution of Supplemental Indentures..............................................54
         SECTION 904.          Effect of Supplemental Indentures.................................................54
         SECTION 905.          Conformity with Trust Indenture Act...............................................54
         SECTION 906.          Reference in Notes to Supplemental Indentures.....................................54
         SECTION 907.          Notice of Supplemental Indentures.................................................54

ARTICLE TEN                    COVENANTS
         SECTION 1001.         Payment of Principal, Premium, if Any, and Interest...............................55
         SECTION 1002.         Maintenance of Office or Agency...................................................55
         SECTION 1003.         Money for Note Payments to Be Held in Trust.......................................55
         SECTION 1004.         Corporate Existence...............................................................57
         SECTION 1005.         Payment of Taxes and Other Claims.................................................57
         SECTION 1006.         Maintenance of Properties.........................................................57
         SECTION 1007.         Insurance.........................................................................57
         SECTION 1008.         Statement by Officers as to Default...............................................58
         SECTION 1009.         Provision of Financial Statements and Reports.....................................58
         SECTION 1010.         Repurchase of Notes upon Change of Control........................................58
         SECTION 1011.         Limitation on Indebtedness........................................................60
         SECTION 1012.         Limitation on Restricted Payments.................................................63
         SECTION 1013.         Limitation on Dividend and Other Payment Restrictions Affecting
                               Restricted Subsidiaries...........................................................66
         SECTION 1014.         Limitation on the Issuance and Sale of Capital Stock of Restricted
                               Subsidiaries......................................................................67
         SECTION 1015.         Limitation on Transactions with Stockholders and Affiliates.......................67
         SECTION 1016.         Limitation on Liens...............................................................69
         SECTION 1017.         Limitation on Asset Sales.........................................................69
         SECTION 1018.         Limitation on Issuances of Guarantees of Indebtedness by Restricted
                               Subsidiaries......................................................................71
         SECTION 1019.         Business of the Company; Restriction on Transfers of Existing
                               Business..........................................................................72
         SECTION 1020.         Limitation on Investments in Unrestricted Subsidiaries............................72
         SECTION 1021.         Limitation on Sale-Leaseback Transactions.........................................72
         SECTION 1022.         Waiver of Certain Covenants.......................................................73

ARTICLE ELEVEN                 REDEMPTION OF NOTES
         SECTION 1101.         Right of Redemption...............................................................73
         SECTION 1102.         Applicability of Article..........................................................73
         SECTION 1103.         Election to Redeem; Notice to Trustee.............................................74
         SECTION 1104.         Selection by Trustee of Notes to Be Redeemed......................................74
         SECTION 1105.         Notice of Redemption..............................................................74
         SECTION 1106.         Deposit of Redemption Price.......................................................75
         SECTION 1107.         Notes Payable on Redemption Date..................................................75
</TABLE>

                                      iii

<PAGE>   6



<TABLE>
<CAPTION>
                                                                                                               Page
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<S>      <C>                   <C>                                                                             <C>
         SECTION 1108.         Notes Redeemed in Part............................................................76
ARTICLE TWELVE                 SECURITY
         SECTION 1201.         Security..........................................................................76

ARTICLE THIRTEEN               DEFEASANCE AND COVENANT DEFEASANCE
         SECTION 1301.         Company's Option to Effect Defeasance or Covenant Defeasance......................77
         SECTION 1302.         Defeasance and Discharge..........................................................77
         SECTION 1303.         Covenant Defeasance...............................................................78
         SECTION 1304.         Conditions to Defeasance or Covenant Defeasance...................................78
         SECTION 1305.         Deposited Money and U.S. Government Obligations to Be Held in
                               Trust; Other Miscellaneous Provisions.............................................80
         SECTION 1306.         Reinstatement.....................................................................81
</TABLE>

TESTIMONIUM

SIGNATURES AND SEALS

Schedule A        World Access Charitable Trust Arrangements

EXHIBIT A         Form of Note


                                       iv

<PAGE>   7

                  INDENTURE, dated as of December 7, 1999, between WORLD
ACCESS, INC., a corporation duly organized and existing under the laws of the
State of Delaware (herein called the "Company"), having its principal office at
945 East Paces Ferry Road, Suite 2200, Atlanta, Georgia 30326, as issuer, and
FIRST UNION NATIONAL BANK, a national banking association, as Trustee (the
"Trustee").


                            RECITALS OF THE COMPANY

                  WHEREAS, the Company and FaciliCom International, Inc., a
Delaware corporation ("FaciliCom") and certain shareholders of FaciliCom have
entered into an Agreement and Plan of Merger, dated as of August 17, 1999, with
respect to the Merger (the "Merger") of FaciliCom with and into the Company and
in connection with the Merger the Company has offered to exchange its 13.25%
Senior Notes due 2008 (the "Notes") and certain other consideration for
FaciliCom's outstanding 10 1/2% Senior Notes due 2008 (the "FaciliCom Notes");

                  WHEREAS, the Company has duly authorized the creation of an
issue of the Notes, of substantially the tenor and amount hereinafter set
forth, and to provide therefor the Company has duly authorized the execution
and delivery of this Indenture.

                  WHEREAS, this Indenture is subject to the provisions of the
Trust Indenture Act that are required to be part of this Indenture and shall,
to the extent applicable, be governed by such provisions.

                  WHEREAS, all things necessary have been done to make the
Notes, when executed by the Company and authenticated and delivered hereunder
and duly issued by the Company, the valid obligations of the Company and to
make this Indenture a valid agreement of the Company, in accordance with their
and its terms.

                  NOW, THEREFORE, THIS INDENTURE WITNESSETH:

                  For and in consideration of the premises and the purchase of
the Notes by the Holders thereof, it is mutually covenanted and agreed, for the
equal and proportionate benefit of all Holders of the Notes, as follows:


                                  ARTICLE ONE

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION

SECTION 101.  Definitions.

<PAGE>   8

                  For all purposes of this Indenture, except as otherwise
expressly provided or unless the context otherwise requires:


                  (a) the terms defined in this Article have the meanings
         assigned to them in this Article, and include the plural as well as
         the singular;

                  (b) all other terms used herein which are defined in the
         Trust Indenture Act, either directly or by reference therein, have the
         meanings assigned to them therein, and the terms "cash transaction"
         and "self-liquidating paper", as used in TIA Section 311, shall have
         the meanings assigned to them in the rules of the Commission adopted
         under the Trust Indenture Act;

                  (c) all accounting terms not otherwise defined herein have
         the meanings assigned to them in accordance with GAAP; and

                  (d) the words "herein", "hereof" and "hereunder" and other
         words of similar import refer to this Indenture as a whole and not to
         any particular Article, Section or other subdivision.

                  "Acquired Indebtedness" means Indebtedness of a Person
existing at the time such Person becomes a Restricted Subsidiary or assumed in
connection with an Asset Acquisition by the Company or a Restricted Subsidiary
and not incurred in connection with, or in anticipation of, such Person
becoming a Restricted Subsidiary or such Asset Acquisition; provided that
Indebtedness of such Person which is redeemed, defeased, retired or otherwise
repaid at the time of or immediately upon the consummation of the transactions
by which such Person becomes a Restricted Subsidiary or such Asset Acquisition
shall not be considered as Indebtedness.

                  "Act", when used with respect to any Holder, has the meaning
specified in Section 104.

                  "Affiliate" means, as applied to any Person, any other Person
directly or indirectly controlling, controlled by, or under direct or indirect
common control with, such Person. For purposes of this definition, "control"
(including, with correlative meanings, the terms "controlling", "controlled by"
and "under common control with"), as applied to any Person, is defined to mean
the possession, directly or indirectly, of the power to direct or cause the
direction of the management and policies of such Person, whether through the
ownership of voting securities, by contract or otherwise.

                  "Armstrong" means Armstrong Holdings, Inc.

                  "Asset Acquisition" means (i) an investment by the Company or
any of its Restricted Subsidiaries in any other Person pursuant to which such
Person shall become a Restricted Subsidiary of the Company or shall be merged
into or consolidated with the Company


                                       2
<PAGE>   9

or any of its Restricted Subsidiaries or (ii) an acquisition by the Company or
any of its Restricted Subsidiaries of the property and assets of any Person
(other than the Company or any of its Restricted Subsidiaries) that constitute
substantially all of a division or line of business of such Person.

                  "Asset Disposition" means the sale or other disposition by
the Company or any of its Restricted Subsidiaries (other than to the Company or
another Restricted Subsidiary of the Company) of (i) all or substantially all
of the Capital Stock of any Restricted Subsidiary of the Company or (ii) all or
substantially all of the assets that constitute a division or line of business
of the Company or any of its Restricted Subsidiaries.

                  "Asset Sale" means any sale, transfer or other disposition
(including by way of merger, consolidation or sale-leaseback transactions) in
one transaction or a series of related transactions by the Company or any of
its Restricted Subsidiaries to any Person (other than the Company or any of its
Restricted Subsidiaries) of (i) all or any of the Capital Stock of any
Restricted Subsidiary (other than in respect of any director's qualifying
shares or investments by foreign nationals mandated by applicable law), (ii)
all or substantially all of the property and assets of an operating unit or
business of the Company or any of its Restricted Subsidiaries or (iii) any
other property and assets of the Company or any of its Restricted Subsidiaries
outside the ordinary course of business of the Company or such Restricted
Subsidiary and, in each case, that is not governed by Article Eight and which,
in the case of any of clause (i), (ii) or (iii) above, whether in one
transaction or a series of related transactions, (a) have a Fair Market Value
in excess of $1 million or (b) are for net proceeds in excess of $1 million;
provided that sales or other dispositions of inventory, receivables and other
current assets in the ordinary course of business shall not be included within
the meaning of "Asset Sale".

                  "Attributable Value" means, as to any particular lease under
which any Person is at the time liable other than a Capitalized Lease
Obligation, and at any date as of which the amount thereof is to be determined,
the total net amount of rent required to be paid by such person under such
lease during the remaining term thereof (whether or not such lease is
terminable at the option of the lessee prior to the end of such term),
including any period for which such lease has been, or may, at the option of
the lessor, be extended, discounted from the last date of such term to the date
of determination at a rate per annum equal to the discount rate which would be
applicable to a Capitalized Lease Obligation with like term in accordance with
GAAP. The net amount of rent required to be paid under any lease for any such
period shall be the aggregate amount of rent payable by the lessee with respect
to such period after excluding amounts required to be paid on account of
insurance, taxes, assessments, utility, operating and labor costs and similar
charges. "Attributable Value" means, as to a Capitalized Lease Obligation under
which any Person is at the time liable and at any date as of which the amount
thereof is to be determined, the capitalized amount thereof that would appear
on the face of a balance sheet of such Person in accordance with GAAP.

                  "Average Life" means, with respect to any Indebtedness, as at
any date of determination, the quotient obtained by dividing (i) the sum of the
products of (a) the number of


                                       3
<PAGE>   10

years from such date to the date or dates of each successive scheduled
principal payment (including, without limitation, any sinking fund
requirements) of such Indebtedness and (b) the amount of each such principal
payment by (ii) the sum of all such principal payments.

                  "Board of Directors" means the board of directors of the
Company or its equivalent, including managers of a limited liability company,
general partners of a partnership or trustees of a business trust, or any duly
authorized committee thereof.

                  "Board Resolution" means a copy of a resolution certified by
the secretary or any assistant secretary of the Company to have been duly
adopted by the Board of Directors and to be in full force and effect on the
date of such certification, and delivered to the Trustee.

                  "Business Day" means each Monday, Tuesday, Wednesday,
Thursday and Friday which is not a day on which banking institutions in The
City of New York or The City of Atlanta are authorized or obligated by law or
executive order to close.

                  "Capital Stock" means, with respect to any Person, any and
all shares, interests, participations, rights in or other equivalents (however
designated, whether voting or non-voting) in equity of such Person, whether now
outstanding or issued after the date of this Indenture, including, without
limitation, all Common Stock and Preferred Stock.

                  "Capitalized Lease Obligation" means any obligation under a
lease of (or other agreement conveying the right to use) any property (whether
real, personal or mixed) that is required to be classified and accounted for as
a capital lease obligation under GAAP, and, for the purpose of this Indenture,
the amount of such obligation at any date shall be the capitalized amount
thereof at such date, determined in accordance with GAAP.

                  "Change of Control" means such time as (i) a "person" or
"group" (within the meaning of Sections 13(d) and 14(d)(2) of the Exchange Act)
becomes the ultimate "beneficial owner" (as defined in Rule 13d-3 under the
Exchange Act) of more than 50% of the total voting power of the then
outstanding Voting Stock of the Company on a fully diluted basis; (ii)
individuals who at the beginning of any period of two consecutive calendar
years constituted the Board of Directors (together with any directors who are
members of the Board of Directors on the date hereof and any new directors
whose election by the Board of Directors or whose nomination for election by
the Company's stockholders was approved by a vote of at least two-thirds of the
members of the Board of Directors then still in office who either were members
of the Board of Directors at the beginning of such period or whose election or
nomination for election was previously so approved) cease for any reason to
constitute a majority of the members of such Board of Directors then in office;
(iii) the sale, lease, transfer, conveyance or other disposition (other than by
way of merger or consolidation), in one transaction or a series of related
transactions, of all or substantially all of the assets of the Company and its
Subsidiaries taken as a whole to any such "person" or "group" (other than to
the Company or a Restricted Subsidiary); (iv) the merger or consolidation of
the Company, with or into another corporation or the merger of another
corporation with or into the Company in one or a series of related


                                       4
<PAGE>   11

transactions with the effect that immediately after such transaction any such
"person" or "group" of persons or entities shall have become the beneficial
owner of securities of the surviving corporation of such merger or
consolidation representing a majority of the total voting power of the then
outstanding Voting Stock of the surviving corporation; or (v) the adoption of a
plan relating to the liquidation or dissolution of the Company.


                  "Change of Control Offer" has the meaning specified in
Section 1010.

                  "Change of Control Payment" has the meaning specified in
Section 1010.

                  "Change of Control Payment Date" has the meaning specified in
Section 1010.

                  "Commission" means the Securities and Exchange Commission, as
from time to time constituted, created under the Exchange Act, or, if at any
time after the execution of this Indenture such Commission is not existing and
performing the duties now assigned to it under the Trust Indenture Act, then
the body performing such duties at such time.

                  "Common Stock" means, with respect to any Person, any and all
shares, interests, participations, rights in or other equivalents (however
designated, whether voting or non-voting) of such Person's common stock,
whether now outstanding or issued after the date of this Indenture, including,
without limitation, all series and classes of such common stock.

                  "Company" means the Person named as the "Company" in the
first paragraph of this Indenture, until a successor Person shall have become
such pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person and references to the "Company"
shall include FaciliCom after giving effect to the Merger.

                  "Company Request" or "Company Order" means a written request
or order signed in the name of the Company by its chairman, its president, any
Vice President, its treasurer or any assistant treasurer, and delivered to the
Trustee.

                  "Consolidated Cash Flow" means, for any period, the sum of
the amounts for such period of (i) Consolidated Net Income, (ii) Consolidated
Interest Expense, (iii) income taxes, to the extent such amount was deducted in
calculating Consolidated Net Income (other than income taxes (either positive
or negative) attributable to extraordinary and non-recurring gains or losses or
sales of assets), (iv) depreciation expense, to the extent such amount was
deducted in calculating Consolidated Net Income, (v) amortization expense, to
the extent such amount was deducted in calculating Consolidated Net Income, and
(vi) all other non-cash items reducing Consolidated Net Income (excluding any
non-cash charge to the extent that it represents an accrual of or reserve for
cash charges in any future period), less all non-cash items increasing
Consolidated Net Income, all as determined on a consolidated basis for the
Company and its Restricted Subsidiaries in conformity with GAAP.


                                       5
<PAGE>   12

                  "Consolidated Fixed Charges" means, for any period,
Consolidated Interest Expense plus dividends declared and payable on Preferred
Stock.

                  "Consolidated Interest Expense" means, for any period, the
aggregate amount of interest in respect of Indebtedness (including capitalized
interest, amortization of original issue discount on any Indebtedness and the
interest portion of any deferred payment obligation, calculated in accordance
with the effective interest method of accounting; all commissions, discounts
and other fees and charges owed with respect to letters of credit and bankers'
acceptance financing; the net costs associated with any Interest Rate
Agreements; and interest on Indebtedness that is Guaranteed or secured by the
Company or any of its Restricted Subsidiaries) and all but the principal
component of rentals in respect of Capitalized Lease Obligations paid, accrued
or scheduled to be paid or to be accrued by the Company and its Restricted
Subsidiaries during such period.

                  "Consolidated Net Income" means, with respect to any Person,
for any period, the consolidated net income (or loss) of such Person and its
Restricted Subsidiaries for such period as determined in accordance with GAAP,
adjusted, to the extent included in calculating such net income, by excluding,
without duplication, (i) all extraordinary gains or losses, (ii) net income (or
loss) of any Person combined in such Person or one of its Restricted
Subsidiaries on a "pooling of interests" basis attributable to any period prior
to the date of combination, (iii) gains or losses (on an after-tax basis) in
respect of any Asset Sales by such Person or one of its Restricted
Subsidiaries, (iv) the net income of any Restricted Subsidiary of such Person
to the extent that the declaration of dividends or similar distributions by
that Restricted Subsidiary of that income is not at the time permitted,
directly or indirectly, by operation of the terms of its charter or any
agreement, instrument, judgment, decree, order, statute, rule or governmental
regulations applicable to that Restricted Subsidiary or its stockholders, (v)
any gain or loss realized as a result of the cumulative effect of a change in
accounting principles, (vi) any amount paid or accrued as dividends on
Preferred Stock of the Company or Preferred Stock of any Restricted Subsidiary
owned by Persons other than the Company and any of its Restricted Subsidiaries
and (vii) the net income (or loss) of any Person (other than net income (or
loss) attributable to a Restricted Subsidiary) in which any Person (other than
the Company or any of its Restricted Subsidiaries) has a joint interest, except
to the extent of the amount of dividends or other distributions actually paid
to the Company or any of its Restricted Subsidiaries by such other Person
during such period.

                  "Consolidated Net Worth" means, at any date of determination,
stockholders' equity as set forth on the most recently available quarterly or
annual consolidated balance sheet of the Company and its Subsidiaries (which
shall be as of a date not more than 90 days prior to the date of such
computation), less any amounts attributable to Redeemable Stock or any equity
security convertible into or exchangeable for Indebtedness, the cost of
treasury stock and the principal amount of any promissory notes receivable from
the sale of the Capital Stock of the Company or any of its Subsidiaries, each
item to be determined in conformity with GAAP (excluding the effects of foreign
currency exchange adjustments under Financial Accounting Standards Board
Statement of Financial Accounting Standards No. 52).


                                       6
<PAGE>   13

                  "Corporate Trust Office" means the corporate trust operations
office of the Trustee, at which at any particular time its corporate trust
business shall be administered, which office at the date of execution of this
Indenture is located at First Union National Bank, Corporate Trust Department,
1525 West W.T. Harris Boulevard, 3C3 NC-1153, Charlotte, North Carolina 28262.

                  "corporation" includes corporations, associations, companies
and business trusts.

                  "covenant defeasance" has the meaning specified in Section
1303.

                  "Credit Facilities" means one or more debt facilities or
commercial paper facilities with banks or other institutional lenders providing
for revolving credit loans, term loans, receivables financing (including
through the sale of receivables to such lenders or to special purpose entities
formed to borrow from such lenders against such receivables) or letters of
credit, in each case, as amended, restated, modified, renewed, refunded,
replaced or refinanced in whole or in part from time to time.

                  "Cumulative Consolidated Cash Flow" means, for the period
beginning on the Exchange Date through and including the end of the last fiscal
quarter (taken as one accounting period) preceding the date of any proposed
Restricted Payment, Consolidated Cash Flow of the Company and its Restricted
Subsidiaries for such period determined on a consolidated basis in accordance
with GAAP.

                  "Cumulative Consolidated Fixed Charges" means the
Consolidated Fixed Charges of the Company and its Restricted Subsidiaries for
the period beginning on the Exchange Date through and including the end of the
last fiscal quarter (taken as one accounting period) preceding the date of any
proposed Restricted Payment, determined on a consolidated basis in accordance
with GAAP.

                  "Cumulative Consolidated Interest Expense" means, for the
period beginning on the Exchange Date through and including the end of the last
fiscal quarter (taken as one accounting period) preceding the date of any
proposed Restricted Payment, Consolidated Interest Expense of the Company and
its Restricted Subsidiaries for such period determined on a consolidated basis
in accordance with GAAP.

                  "Currency Agreement" means any foreign exchange contract,
currency swap agreement and any other arrangement and agreement designed to
provide protection against fluctuations in currency (or currency unit) values.

                  "Default" means any event that is, or after notice or passage
of time or both would be, an Event of Default.

                  "Defaulted Interest" has the meaning specified in Section 307.


                                       7
<PAGE>   14

                  "defeasance" has the meaning specified in Section 1302.

                  "Depositary" means The Depository Trust Company, its nominees
and successors or any replacement thereof.

                  "Eligible Accounts Receivable" means the accounts receivable
(net of any reserves and allowances for doubtful accounts in accordance with
GAAP) of any Person that are not more than 60 days past their due date and that
were entered into in the ordinary course of business on normal payment terms as
shown on the most recent consolidated balance sheet of such Person filed with
the Commission, all in accordance with GAAP.

                  "Eligible Institution" means a commercial banking institution
that has combined capital and surplus of not less than $500 million or its
equivalent in foreign currency, and has outstanding debt with a rating of "A-3"
or higher according to Moody's Investors Service, Inc., or "A-" or higher
according to Standard & Poor's Ratings Services (or such similar equivalent
rating by at least one "nationally recognized statistical rating organization"
(as defined in Rule 436 under the Securities Act)), at the time as of which any
investment or rollover therein is made.

                  "Event of Default" has the meaning specified in Section 501.

                  "Excess Proceeds" has the meaning specified in Section 1017.

                  "Excess Proceeds Offer" has the meaning specified in Section
1017.

                  "Excess Proceeds Payment" has the meaning specified in
Section 1017.

                  "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

                  "Exchange Date" means the date of issuance of the Notes upon
the consummation of the registered exchange offer pursuant to which holders of
the FaciliCom Notes tendered such notes in exchange for the Notes issued by the
Company pursuant to this Indenture.

                  "Existing Indebtedness" means Indebtedness outstanding on the
date hereof.

                  "FaciliCom" has the meaning specified in the recitals to this
Indenture.

                  "FaciliCom Notes" has the meaning specified in the recitals
to this Indenture.

                  "FaciliCom Pledge Account" means an account established with
the FaciliCom Trustee in its name as trustee under the Original Indenture
pursuant to the terms of the FaciliCom Pledge Agreement.


                                       8
<PAGE>   15

                  "FaciliCom Pledge Agreement" means the Collateral Pledge and
Security Agreement, dated as of January 28, 1998, from FaciliCom to the
FaciliCom Trustee governing the FaciliCom Pledge Account and the disbursements
of funds therefrom.

                  "FaciliCom Pledged Securities" means the securities purchased
by FaciliCom with the portion of the net proceeds from the original offering of
the FaciliCom Notes consisting of U.S. Government Obligations and which were
deposited in the FaciliCom Pledge Account pursuant to the FaciliCom Pledge
Agreement.

                  "FaciliCom Trustee" means State Street Bank and Trust
Company, as trustee under the Original Indenture.

                  "Fair Market Value" means, with respect to any asset or
property, the sale value that would be obtained in an arm's length transaction
between an informed and willing seller under no compulsion to sell and an
informed and willing buyer under no compulsion to buy.

                  "GAAP" means generally accepted accounting principles in the
United States of America as in effect from time to time, including, without
limitation, those set forth in the opinions and pronouncements of the
Accounting Principles Board of the American Institute of Certified Public
Accountants and statements and pronouncements of the Financial Accounting
Standards Board or in such other statements by such other entity as approved by
a significant segment of the accounting profession of the United States.

                  "Global Notes" has the meaning specified in Section 201.

                  "Guarantee" means any obligation, contingent or otherwise, of
any Person directly or indirectly guaranteeing any Indebtedness or other
obligation of any other Person and, without limiting the generality of the
foregoing, any obligation, direct or indirect, contingent or otherwise, of such
Person (i) to purchase or pay (or advance or supply funds for the purchase or
payment of) such Indebtedness or other obligation of such other Person (whether
arising by virtue of partnership arrangements, or by agreements to keep-well,
to purchase assets, goods, securities or services, to take-or-pay, or to
maintain financial statement conditions or otherwise) or (ii) entered into for
purposes of assuring in any other manner the obligee of such Indebtedness or
other obligation of the payment thereof or to protect such obligee against loss
in respect thereof (in whole or in part); provided that the term "Guarantee"
shall not include endorsements for collection or deposit in the ordinary course
of business. The term "Guarantee" used as a verb has a corresponding meaning.

                  "Holder" means a Person in whose name a Note is registered in
the Register.

                  "Incur" or "Incurrence" means, with respect to any
Indebtedness, to incur, create, issue, assume, Guarantee or otherwise become
liable for or with respect to, or become responsible for, the payment of,
contingently or otherwise, such Indebtedness, including an Incurrence of
Indebtedness by reason of the acquisition of more than 50% of the Capital Stock
of


                                       9
<PAGE>   16

any Person; provided that neither the accrual of interest nor the accretion
of original issue discount shall be considered an Incurrence of Indebtedness.

                  "Indebtedness" means, with respect to any Person at any date
of determination (without duplication), (i) all indebtedness of such Person for
borrowed money, (ii) all obligations of such Person evidenced by bonds,
debentures, notes or other similar instruments, (iii) all obligations of such
Person in respect of letters of credit or other similar instruments (including
reimbursement obligations with respect thereto), (iv) all obligations of such
Person to pay the deferred and unpaid purchase price of property or services,
which purchase price is due more than six months after the date of placing such
property in service or taking delivery and title thereto or the completion of
such services, except Trade Payables, (v) all obligations of such Person as
lessee under Capitalized Lease Obligations and the Attributable Value under any
Sale-Leaseback Transaction of such Person, (vi) all Indebtedness of other
Persons secured by a Lien on any asset of such Person, whether or not such
Indebtedness is assumed by such Person; provided that the amount of such
Indebtedness shall be the lesser of (A) the Fair Market Value of such asset at
such date of determination or (B) the amount of such Indebtedness, (vii) all
Indebtedness of other Persons Guaranteed by such Person to the extent such
Indebtedness is Guaranteed by such Person, (viii) the maximum fixed redemption
or repurchase price of Redeemable Stock of such Person at the time of
determination and (ix) to the extent not otherwise included in this definition,
obligations under Currency Agreements and Interest Rate Agreements. The amount
of Indebtedness of any Person at any date shall be the outstanding balance at
such date of all unconditional obligations as described above and, with respect
to contingent obligations, the maximum liability upon the occurrence of the
contingency giving rise to the obligation; provided (x) that the amount
outstanding at any time of any Indebtedness issued with original issue discount
is the face amount of such Indebtedness less the remaining unamortized portion
of the original issue discount of such Indebtedness at such time as determined
in conformity with GAAP and (y) that Indebtedness shall not include any
liability for federal, state, local or other taxes.

                  "Indenture" means this instrument and the Pledge Agreement as
originally executed and as they may from time to time be supplemented or
amended by one or more indentures supplemental hereto and pledge agreements
supplemental thereto entered into pursuant to the applicable provisions hereof.

                  "Indirect Participant" means a Person who holds a beneficial
interest in a Global Note through a Participant.

                  "Interest Payment Date" means the Stated Maturity of an
installment of interest on the Notes.

                  "Interest Rate Agreements" means any interest rate swap
agreements, interest rate cap agreements, interest rate insurance, and other
arrangements and agreements designed to provide protection against fluctuations
in interest rates.


                                      10
<PAGE>   17

                  "Investment" in any Person means any direct or indirect
advance, loan or other extension of credit (including, without limitation, by
way of Guarantee or similar arrangement; but excluding advances to customers in
the ordinary course of business that are, in conformity with GAAP, recorded as
accounts receivable on the balance sheet of the Company or its Restricted
Subsidiaries) or capital contribution to (by means of any transfer of cash or
other property to others or any payment for property or services for the
account or use of others), or any purchase or acquisition of Capital Stock,
bonds, notes, debentures or other similar instruments issued by, such Person.
For purposes of the definition of "Unrestricted Subsidiary" and Sections 1012
and 1014, (i) "Investment" shall include (a) the Fair Market Value of the
assets (net of liabilities) of any Restricted Subsidiary of the Company at the
time that such Restricted Subsidiary of the Company is designated an
Unrestricted Subsidiary and shall exclude the Fair Market Value of the assets
(net of liabilities) of any Unrestricted Subsidiary at the time that such
Unrestricted Subsidiary is designated a Restricted Subsidiary of the Company
and (b) the Fair Market Value, in the case of a sale of Capital Stock in
accordance with Section 1014 such that a Person no longer constitutes a
Restricted Subsidiary, of the remaining assets (net of liabilities) of such
Person after such sale, and shall exclude the Fair Market Value of the assets
(net of liabilities) of any Unrestricted Subsidiary at the time that such
Unrestricted Subsidiary is designated a Restricted Subsidiary of the Company
and (ii) any property transferred to or from an Unrestricted Subsidiary shall
be valued at its Fair Market Value at the time of such transfer, in each case
as determined by the Board of Directors in good faith.

                  "Investment Grade Company" means a Person whose debt
securities are rated BBB- or higher by Standard & Poor's Ratings Service, Inc.
or Baa3 or higher by Moody's Investor Service, Inc. (or an equivalent rating by
another nationally recognized rating agency).

                  "IRU" means Indefeasible Right of Use, which is the right to
use a telecommunications system with most of the rights and duties of
ownership, but without the right to control or manage such facility and,
depending upon the particular agreement, without any right to salvage or duty
to dispose of such system's cable at the end of its useful life.

                  "Junior Preferred Stock" has the meaning specified in Section
1012.

                  "Lien" means any mortgage, charge, pledge, security interest,
encumbrance, lien (statutory or other), hypothecation, assignment for security,
claim, or preference or priority or other encumbrance upon or with respect to
any property of any kind (including, without limitation, any conditional sale
or other title retention agreement or lease in the nature thereof, any sale
with recourse against the seller or any Affiliate of the seller, or any
agreement to give any security interest).

                  "MAOU" means Minimum Assignable Ownership Units which is
capacity on a telecommunications system that has been acquired on an ownership
basis.

                  "Market Price" means the average closing price of the shares
of the Company's Common Stock on the principal trading market of such Common
Stock over the five consecutive


                                      11
<PAGE>   18

trading days up to and including the trading day prior to the last full trading
day before the closing of the Merger.

                  "Market Value" means the average of the closing price of the
applicable security on such security's principal trading market over the five
consecutive trading days up to and including the trading day prior to the last
full trading day before the initiation of any Offer to Purchase described in
clause (i) (B) of the second paragraph of Section 1017 or the time any
commitment to effect an Asset Sale is entered into as described in the first
paragraph of Section 1017.

                  "Marketable Securities" means: (i) U.S. Government
Obligations which have a remaining weighted average life to maturity of not
more than one year from the date of Investment therein; (ii) any time deposit
account, money market deposit and certificate of deposit maturing not more than
180 days after the date of acquisition issued by, or time deposit of, an
Eligible Institution; (iii) certificates of deposit, Eurodollar time deposits
and bankers' acceptances with maturity of 90 days or less and overnight bank
deposits of any financial institution that is organized under the laws of the
United States of America or any state hereof, and which bank or trust company
has capital, surplus and undivided profits aggregating in excess of $300
million (or, to the extent non-United States dollar denominated, the United
States Dollar Equivalent of such amount) and has outstanding debt which is
rated "A" (or such similar equivalent rating) or higher by at least one
"nationally recognized statistical rating organization" (as defined in Rule 436
under the Securities Act); (iv) commercial paper maturing not more than 180
days after the date of acquisition issued by a corporation (other than an
Affiliate of the Company) with a rating, at the time as of which any investment
therein is made, of "P-1" or higher according to Moody's Investors Service,
Inc., or "A-1" or higher according to Standard & Poor's Ratings Services (or
such similar equivalent rating by at least one "nationally recognized
statistical rating organization" (as defined in Rule 436 under the Securities
Act)); (v) auction rate preferred securities whose rates are reset based on
market level for a par security not more than 90 days after the date of
acquisition with a rating, at the time as of which any investment therein is
made, of "A-3" or higher according to Moody's Investors Service, Inc., or "A-"
or higher according to Standard & Poor's Ratings Services (or such similar
equivalent rating by at least one "nationally recognized statistical rating
organization" (as defined in Rule 436 under the Securities Act)) and issued by
a corporation that is not an Affiliate of the Company; (vi) any banker's
acceptance or money market deposit accounts issued or offered by an Eligible
Institution; (vii) repurchase obligations with a term of not more than seven
days for U.S. Government Obligations entered into with an Eligible Institution;
(viii) any obligations of the Trustee to the extent such obligations qualify as
such under clauses (i) through (vii) above and (ix) any fund investing
exclusively in investments of the types described in clauses (i) through (viii)
above.

                  "Maturity", when used with respect to any Notes, means the
date on which the principal of such Notes or an installment of principal
becomes due and payable as therein or herein provided, whether at the Stated
Maturity or by declaration of acceleration, notice of redemption or otherwise.


                                      12
<PAGE>   19

                  "Maturity Date" means January 15, 2008.

                  "Merger" means the merger of FaciliCom with and into the
Company pursuant to the Agreement and Plan of Merger dated August 17, 1999
between the Company and FaciliCom.

                  "Net Cash Proceeds" means, (a) with respect to any Asset
Sale, the proceeds of such Asset Sale in the form of cash or cash equivalents,
including payments in respect of deferred payment obligations (to the extent
corresponding to the principal, but not interest, component thereof) when
received in the form of cash or cash equivalents (except to the extent such
obligations are financed or sold with recourse to the Company or any Restricted
Subsidiary of the Company) and proceeds from the conversion of other property
received when converted to cash or cash equivalents, net of (i) brokerage
commissions and other fees and expenses (including fees and expenses of counsel
and investment bankers) related to such Asset Sale, (ii) provisions for all
taxes payable as a result of such Asset Sale without regard to the consolidated
results of operations of the Company and its Restricted Subsidiaries, taken as
a whole (after taking into account any available offsetting tax credits or
deductions and any tax sharing arrangements), (iii) payments made to repay
Indebtedness or any other obligation outstanding at the time of such Asset Sale
that either (A) is secured by a Lien on the property or assets sold or (B) is
required to be paid as a result of such sale and (iv) appropriate amounts to be
provided by the Company or any Restricted Subsidiary of the Company as a
reserve against any liabilities associated with such Asset Sale, including,
without limitation, pension and other post-employment benefit liabilities,
liabilities related to environmental matters and liabilities under any
indemnification obligations associated with such Asset Sale, all as determined
in conformity with GAAP, and (b) with respect to any issuance or sale of
Capital Stock, the proceeds of such issuance or sale in the form of cash or
cash equivalents, including payments in respect of deferred payment obligations
(to the extent corresponding to the principal, but not interest, component
thereof) when received in the form of cash or cash equivalents (except to the
extent such obligations are financed or sold with recourse to the Company or
any Restricted Subsidiary of the Company) and proceeds from the conversion of
other property received when converted to cash or cash equivalents, net of
attorneys' fees, accountants' fees, underwriters' or placement agents' fees,
discounts or commissions and brokerage, consultant and other fees incurred in
connection with such issuance or sale and net of taxes paid or payable as a
result thereof.

                  "Notes" means any of the Notes as defined in the first
recital of this Indenture and more particularly means any Notes authenticated
and delivered under this Indenture.

                  "Offer Payment Date" has the meaning specified in Section
1017.

                  "Offer to Purchase" has the meaning specified in Section
1017.

                  "Offer to Purchase Payment" has the meaning specified in
Section 1017.


                                      13
<PAGE>   20

                  "Officer's Certificate" means a certificate signed by the
chairman, the president, a Vice President, the treasurer, an assistant
treasurer, the secretary or an assistant secretary of the Company, and
delivered to the Trustee.

                  "Opinion of Counsel" means a written opinion of counsel, who
may be counsel for the Company, including an employee of the Company, and who
shall be acceptable to the Trustee.

                  "Original Indenture" means the Indenture, dated as of January
28, 1998, among FaciliCom and the FaciliCom Trustee, as supplemented by the
First Supplemental Indenture thereto, pursuant to which FaciliCom issued the
FaciliCom Notes.

                  "Original Issue Date" means January 28, 1998, the date
FaciliCom issued the FaciliCom Notes.

                  "Outstanding", when used with respect to Notes, means, as of
the date of determination, all Notes theretofore authenticated and delivered
under this Indenture, except:


                  (i)   Notes theretofore cancelled by the Trustee or delivered
         to the Trustee for cancellation;

                  (ii)  Notes, or portions thereof, for whose payment or
         redemption money in the necessary amount has been theretofore
         deposited with the Trustee or any Paying Agent (other than the
         Company) in trust or set aside and segregated in trust by the Company
         (if the Company shall act as its own Paying Agent) for the Holders of
         such Notes; provided that, if such Notes are to be redeemed, notice of
         such redemption has been duly given pursuant to this Indenture or
         provision therefor satisfactory to the Trustee has been made;

                  (iii) Notes, except to the extent provided in Sections 1302
         and 1303, with respect to which the Company has effected defeasance
         and/or covenant defeasance as provided in Article Thirteen; and

                  (iv)  Notes which have been paid pursuant to Section 306 or in
         exchange for or in lieu of which other Notes have been authenticated
         and delivered pursuant to this Indenture, other than any such Notes in
         respect of which there shall have been presented to the Trustee proof
         satisfactory to it that such Notes are held by a bona fide purchaser
         in whose hands the Notes are valid obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of Outstanding Notes have given any request, demand,
authorization, direction, consent, notice or waiver hereunder, and for the
purpose of making the calculations required by Section 313 of the TIA, Notes
owned by the Company or any other obligor upon the Notes or any Affiliate of
the Company or such other obligor shall be disregarded and deemed not to be
Outstanding, except that, in determining whether the Trustee shall be protected
in making such calculation or in


                                      14
<PAGE>   21

relying upon any such request, demand, authorization, direction, notice,
consent or waiver, only Notes which the Trustee actually knows to be so owned
shall be so disregarded. Notes so owned which have been pledged in good faith
may be regarded as Outstanding if the pledgee establishes to the satisfaction
of the Trustee the pledgee's right so to act with respect to such Notes and
that the pledgee is not the Company or any other obligor upon the Notes or any
Affiliate of the Company or such other obligor.

                  "Participant" means, with respect to the Depositary or its
nominee, an institution that has an account therewith.

                  "Paying Agent" means any Person (including the Company acting
as Paying Agent) authorized by the Company to pay the principal of (and
premium, if any) or interest on any Notes on behalf of the Company. The initial
Paying Agent shall be the Trustee.

                  "Payment Account" has the meaning specified in Section 402.

                  "Permitted Business" means any business involving voice, data
and other telecommunications services or equipment.

                  "Permitted Indebtedness" has the meaning specified in Section
1011(b).

                  "Permitted Investment" means (i) an Investment in a
Restricted Subsidiary or a Person which will, upon the making of such
Investment, become a Restricted Subsidiary or be merged or consolidated with or
into, or transfer or convey all or substantially all its assets to, the Company
or a Restricted Subsidiary; (ii) any Investment in Marketable Securities or
Pledged Securities; (iii) payroll, travel and similar advances to cover matters
that are expected at the time of such advances ultimately to be treated as
expenses in accordance with GAAP; (iv) loans or advances to officers and
employees made in the ordinary course of business that do not in the aggregate
exceed $1 million at any time outstanding; (v) stock, obligations or securities
received in satisfaction of judgments; (vi) Investments in any Person received
as consideration for Asset Sales to the extent permitted under Section 1017;
(vii) Investments in any Person at any one time outstanding (measured on the
date each such Investment was made without giving effect to subsequent changes
in value) in an aggregate amount not to exceed the greater of (A) $15 million
or (B) 5% of the Company's total consolidated assets; (viii) Investments in
deposits with respect to leases or utilities provided to third parties in the
ordinary course of business; (ix) Investments in Currency Agreements and
Interest Rate Agreements on commercially reasonable terms entered into by the
Company or any of its Restricted Subsidiaries in the ordinary course of
business in connection with the operation of the business of the Company or its
Restricted Subsidiaries; provided that such agreements do not increase the
Indebtedness of the obligor outstanding at any time other than as a result of
fluctuations in foreign currency exchange rates or interest rates or by reason
of fees, indemnities and compensation payable thereunder; (x) repurchases or
redemptions by the Company of Capital Stock from officers and other employees
of the Company or any of its Subsidiaries or their authorized representatives
upon the death, disability or termination of employment of such individuals, in
an aggregate amount not


                                      15
<PAGE>   22

exceeding $1 million in any calendar year and $3 million from the date of this
Indenture; and (xi) Investments in evidences of Indebtedness, securities or
other property received from another Person by the Company or any of its
Restricted Subsidiaries in connection with any bankruptcy proceeding or by
reason of a composition or readjustment of debt or a reorganization of such
Person or as a result of foreclosure, perfection or enforcement of any Lien in
exchange for evidences of Indebtedness, securities or other property of such
Person held by the Company or any of its Subsidiaries, or for other liabilities
or obligations of such Person to the Company or any of its Subsidiaries that
were created, in accordance with the terms of this Indenture.

                  "Permitted Liens" means (i) Liens for taxes, assessments,
governmental charges or claims that are being contested in good faith by
appropriate legal proceedings promptly instituted and diligently conducted and
for which a reserve or other appropriate provision, if any, as shall be
required in conformity with GAAP shall have been made; (ii) statutory Liens of
landlords and carriers, warehousemen, mechanics, suppliers, materialmen,
repairmen or other similar Liens arising in the ordinary course of business and
with respect to amounts not yet delinquent or being contested in good faith by
appropriate legal proceedings promptly instituted and diligently conducted and
for which a reserve or other appropriate provision, if any, as shall be
required in conformity with GAAP shall have been made; (iii) Liens incurred or
deposits made in the ordinary course of business in connection with workers'
compensation, unemployment insurance and other types of social security; (iv)
Liens incurred or deposits made to secure the performance of tenders, bids,
leases, statutory or regulatory obligations, bankers' acceptances, surety and
appeal bonds, government contracts, performance and return-of-money bonds and
other obligations of a similar nature incurred in the ordinary course of
business (exclusive of obligations for the payment of borrowed money); (v)
easements, rights-of-way, municipal and zoning ordinances and similar charges,
encumbrances, title defects or other irregularities that do not materially
interfere with the ordinary course of business of the Company or any of its
Restricted Subsidiaries; (vi) Liens (including extensions and renewals thereof)
upon real or personal property purchased or leased after the Original Issue
Date; provided that (a) such Lien is created solely for the purpose of securing
Indebtedness Incurred in compliance with Section 1011 (1) to finance the cost
(including the cost of design, development, construction, acquisition,
installation or integration) of the item of property or assets subject thereto
and such Lien is created prior to, at the time of or within six months after
the later of the acquisition, the completion of construction or the
commencement of full operation of such property or (2) to refinance any
Indebtedness previously so secured, (b) the principal amount of the
Indebtedness secured by such Lien does not exceed 100% of such cost and (c) any
such Lien shall not extend to or cover any property or assets other than such
item of property or assets and any improvements on such item; (vii) leases or
subleases granted to others that do not materially interfere with the ordinary
course of business of the Company and its Restricted Subsidiaries, taken as a
whole; (viii) Liens encumbering property or assets under construction arising
from progress or partial payments by a customer of the Company or its
Restricted Subsidiaries relating to such property or assets; (ix) any interest
or title of a lessor in the property subject to any Capitalized Lease
Obligation or operating lease; (x) Liens arising from filing Uniform Commercial
Code financing statements regarding leases; (xi) Liens on property of, or on
shares of stock or Indebtedness of, any corporation existing at the time such
corporation becomes, or


                                      16
<PAGE>   23

becomes a part of, any Restricted Subsidiary; provided that such Liens do not
extend to or cover any property or assets of the Company or any Restricted
Subsidiary other than the property or assets acquired and were not created in
contemplation of such transaction; (xii) Liens in favor of the Company or any
Restricted Subsidiary; (xiii) Liens arising from the rendering of a final
judgment or order against the Company or any Restricted Subsidiary of the
Company that does not give rise to an Event of Default; (xiv) Liens securing
reimbursement obligations with respect to letters of credit that encumber
documents and other property relating to such letters of credit and the
products and proceeds thereof; (xv) Liens in favor of customs and revenue
authorities arising as a matter of law to secure payment of customs duties in
connection with the importation of goods; (xvi) Liens encumbering customary
initial deposits and margin deposits and other Liens that are either within the
general parameters customary in the industry or incurred in the ordinary course
of business, in each case, securing Indebtedness under Interest Rate Agreements
and Currency Agreements; (xvii) Liens arising out of conditional sale, title
retention, consignment or similar arrangements for the sale of goods entered
into by the Company or any of its Restricted Subsidiaries in the ordinary
course of business in accordance with the past practices of the Company and its
Restricted Subsidiaries prior to the Exchange Date; (xviii) Liens existing on
the Original Issue Date or securing the Notes or the FaciliCom Notes or any
Guarantee of the Notes or the FaciliCom Notes; (xix) Liens granted after the
Exchange Date on any assets or Capital Stock of the Company or its Restricted
Subsidiaries created in favor of the Holders; (xx) Liens securing Indebtedness
which is incurred to refinance secured Indebtedness which is permitted to be
Incurred under clause (viii) of paragraph (b) of Section 1011; provided that
such Liens do not extend to or cover any property or assets of the Company or
any Restricted Subsidiary other than the property or assets securing the
Indebtedness being refinanced; and (xxi) Liens securing Indebtedness under
Credit Facilities incurred in compliance with clause (iii), or securing
Indebtedness to finance the cost of Telecommunication Assets under clause (iv)
of paragraph (b) of Section 1011.

                  "Person" means any individual, corporation, limited liability
company, partnership, joint venture, association, joint-stock company, trust,
unincorporated organization or government or any agency or political
subdivision thereof.

                  "Pledge Account" means an account established with the
Trustee in its name as Trustee hereunder pursuant to the terms of the Pledge
Agreement for the deposit of the Pledged Securities.

                  "Pledge Agreement" means the Collateral Pledge and Security
Agreement, dated as of the date of this Indenture, from the Company to the
Trustee, governing the Pledge Account and the disbursement of funds therefrom.

                  "Pledged Securities" means the FaciliCom Pledged Securities
or portion thereof which are to be transferred from the FaciliCom Pledge
Account to, and deposited in, the Pledge Account pursuant to the Pledge
Agreement. The Pledged Securities may be held in book-entry form through the
Trustee acting as securities intermediary.


                                      17
<PAGE>   24

                  "Predecessor Note" of any particular Note means every
previous Note evidencing all or a portion of the same debt as that evidenced by
such particular Note; and, for the purposes of this definition, any Note
authenticated and delivered under Section 306 in exchange for a mutilated
security or in lieu of a lost, destroyed or stolen Note shall be deemed to
evidence the same debt as the mutilated, lost, destroyed or stolen Note.

                  "Preferred Stock" means, with respect to any Person, any and
all shares, interests, participations, rights or other equivalents (however
designated, whether voting or non-voting) of such Person's preferred or
preference stock, whether now outstanding or issued after the date of the
Indenture, including, without limitation, all series and classes of such
preferred or preference stock.

                  "Pro Forma Consolidated Cash Flow" means, for any period, the
Consolidated Cash Flow of the Company for such period calculated on a pro forma
basis to give effect to any Asset Disposition or Asset Acquisition not in the
ordinary course of business (including acquisitions of other Persons by merger,
consolidation or purchase of Capital Stock) during such period as if such Asset
Disposition or Asset Acquisition had taken place on the first day of such
period.

                  "Public Equity Offering" means an underwritten primary public
offering of Common Stock of the Company pursuant to an effective registration
statement under the Securities Act.

                  "Purchase Money Indebtedness" means the principal of,
premium, if any, and interest on, and any other payment obligations in respect
of, any Indebtedness of the Company incurred to finance the purchase of plant,
property, equipment, machinery or similar assets (including, without
limitation, indebtedness for money borrowed for such purpose and indebtedness
in respect of installment payment arrangements).

                  "Purchase Price" has the meaning set forth in Section 1010.

                  "Redeemable Stock" means any class or series of Capital Stock
of any Person that by its terms (or by the terms of any security into which it
is exchangeable) or otherwise is (i) required to be redeemed on or prior to the
date that is 123 days after the date of the Stated Maturity of the Notes, (ii)
redeemable at the option of the holder of such class or series of Capital Stock
at any time on or prior to the date that is 123 days after the date of the
Stated Maturity of the Notes or (iii) convertible into or exchangeable for
Capital Stock referred to in clause (i) or (ii) above or Indebtedness having a
scheduled maturity on or prior to the date that is 123 days after the date of
the Stated Maturity of the Notes; provided that any Capital Stock that would
not constitute Redeemable Stock but for provisions thereof giving holders
thereof the right to require such Person to repurchase or redeem such Capital
Stock upon the occurrence of an "asset sale" or "change of control" occurring
on or prior to the date that is 123 days after the date of the Stated Maturity
of the Notes shall not constitute Redeemable Stock if the "asset sale" or
"change of control" provisions applicable to such Capital Stock are no more
favorable to the holders of such


                                      18
<PAGE>   25

Capital Stock than the provisions contained in Sections 1010 and 1017 and such
Capital Stock specifically provides that such Person will not repurchase or
redeem any such stock pursuant to such provisions, on or prior to the date that
is 123 days after the date of the Company's repurchase of such Notes as are
required to be repurchased pursuant to Sections 1010 and 1017.

                  "Redemption Date", when used with respect to any Note to be
redeemed, in whole or in part, means the date fixed for such redemption by or
pursuant to this Indenture.

                  "Redemption Price", when used with respect to any Note to be
redeemed, means the price at which it is to be redeemed pursuant to this
Indenture.

                  "Register" and "Registrar" have the respective meanings
specified in Section 305.

                  "Regular Record Date" for the interest payable on any
Interest Payment Date means the January 1 or July 1 (whether or not a Business
Day), as the case may be, next preceding such Interest Payment Date.

                  "Responsible Officer", when used with respect to the Trustee,
means any officer of its corporate trust department or similar group having
direct responsibility for the administration of this Indenture and also means,
with respect to a particular corporate trust matter, any other officer to whom
such matter is referred because of his knowledge of and familiarity with the
particular subject.

                  "Restricted Payments" has the meaning specified in Section
1012.

                  "Restricted Subsidiary" means any Subsidiary of the Company
other than an Unrestricted Subsidiary.

                  "Sale-Leaseback Transaction" of any person means an
arrangement with any lender or investor or to which such lender or investor is
a party providing for the leasing by such person of any property or asset of
such person which has been or is being sold or transferred by such person after
the acquisition thereof or the completion of construction or commencement of
operation thereof to such lender or investor or to any person to whom funds
have been or are to be advanced by such lender or investor on the security of
such property or asset. The stated maturity of such arrangement shall be the
date of the last payment of rent or any other amount due under such arrangement
prior to the first date on which such arrangements may be terminated by the
lessee without payment of a penalty.

                  "Securities Act" means the Securities Act of 1933, as amended.

                  "Senior Preferred Stock" has the meaning specified in Section
1012.


                                      19
<PAGE>   26

                  "Significant Subsidiary" means a Restricted Subsidiary that
is a "significant subsidiary" as defined in Rule 1-02(w) of Regulation S-X
under the Securities Act and the Exchange Act.

                  "Special Record Date" for the payment of any Defaulted
Interest means a date fixed by the Trustee pursuant to Section 307.

                  "Stated Maturity" means (i) with respect to any debt
security, the date specified in such debt security as the fixed date on which
the final installment of principal of such debt security is due and payable and
(ii) with respect to any scheduled installment of principal of or interest on
any debt security, the date specified in such debt security as the fixed date
on which such installment is due and payable.

                  "Subsidiary" means, with respect to any Person, any
corporation, association or other business entity including, without
limitation, partnerships and limited liability companies, of which more than
50% of the outstanding Voting Stock is owned, directly or indirectly, by such
Person and one or more other Subsidiaries of such Person.

                  "Telecommunications Assets" means, with respect to any
Person, equipment used in the telecommunications business or ownership rights
with respect to IRUs, MAOUs or minimum investment units (or similar ownership
interests) in fiber optic cable and international or domestic
telecommunications switches or other transmission facilities (or Common Stock
of a Person that becomes a Restricted Subsidiary, the assets of which consist
primarily of any such Telecommunications Assets), in each case purchased or
acquired through Indebtedness, provided that such Indebtedness does not exceed
the Fair Market Value of such assets, by the Company or a Restricted Subsidiary
after the Original Issue Date.

                  "Tested Transaction" has the meaning stated in the definition
of "United States Dollar Equivalent".

                  "The 1818 Fund" has the meaning specified in Section 1012.

                  "TMG" means Telecommunications Management Group, Inc.

                  "Total Equity Market Capitalization" of any Person means, as
of any date of determination, the product of (i) the aggregate number of
outstanding shares of Common Stock of such Person on such date on a
fully-diluted basis and (ii) the average closing price of such Common Stock
over the five consecutive trading days immediately preceding such date. If no
closing price exists with respect to shares of any such class, the value of
such shares shall be determined by the Board of Directors in good faith and
evidenced by a resolution of the Board of Directors filed with the Trustee.

                  "Trade Payables" means any accounts payable or any other
indebtedness or monetary obligation to trade creditors created, assumed or
Guaranteed by the Company or any of


                                      20
<PAGE>   27

its Restricted Subsidiaries arising in the ordinary course of business in
connection with the acquisition of goods and services.

                  "Transaction Date" means, with respect to the Incurrence of
any Indebtedness by the Company or any of its Restricted Subsidiaries, the date
such Indebtedness is to be Incurred and, with respect to any Restricted
Payment, the date such Restricted Payment is to be made.

                  "Trust Indenture Act" or "TIA" means the Trust Indenture Act
of 1939 as in force at the date as of which this Indenture was executed, except
as provided in Section 905.

                  "Trustee" means the Person named as the "Trustee" in the
first paragraph of this Indenture until a successor Trustee shall have become
such pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean such successor Trustee.

                  "Uniform Commercial Code" means the Uniform Commercial Code
as in effect in New York State.

                  "United States Dollar Equivalent" means, with respect to any
monetary amount in a currency other than the United States dollar, at any time
for the determination thereof, the amount of United States dollars obtained by
converting such foreign currency involved in such computation into United
States dollars at the spot rate for the purchase of United States dollars with
the applicable foreign currency as quoted by Reuters at approximately 11:00
a.m. (New York City time) on the date not more than two business days prior to
such determination. For purposes of determining whether any Indebtedness can be
incurred (including Permitted Indebtedness), any Investment can be made and any
transaction described in Section 1015 can be undertaken (a "Tested
Transaction"), the United States Dollar Equivalent of such Indebtedness,
Investment or transaction described in Section 1015 will be determined on the
date Incurred, made or undertaken and no subsequent change in the United States
Dollar Equivalent shall cause such Tested Transaction to have been Incurred,
made or undertaken in violation of this Indenture.

                  "Unrestricted Subsidiary" means (i) any Subsidiary of the
Company that at the time of determination shall be designated an Unrestricted
Subsidiary by the Board of Directors in the manner provided below and (ii) any
Subsidiary of an Unrestricted Subsidiary. The Board of Directors may designate
any Restricted Subsidiary of the Company (including any newly acquired or newly
formed Subsidiary of the Company) to be an Unrestricted Subsidiary unless such
Subsidiary owns any Capital Stock of, or owns or holds any Lien on any property
of, the Company or any Restricted Subsidiary; provided (A) that the Subsidiary
to be so designated has total assets of $1,000 or less or (B) if such
Subsidiary has assets greater than $1,000, that such designation would be
permitted under Section 1012, and such Subsidiary is not liable, directly or
indirectly, with respect to any Indebtedness other than Unrestricted Subsidiary
Indebtedness. The Board of Directors may designate any Unrestricted Subsidiary
to be a Restricted Subsidiary of the Company; provided that immediately after
giving effect to such designation (x) the Company could Incur $1.00 of
additional Indebtedness under the first paragraph of Section 1011 and (y) no
Default or Event of Default shall have occurred and be continuing. Any such
designation by the


                                      21
<PAGE>   28

Board of Directors shall be evidenced to the Trustee by promptly filing with
the Trustee a copy of the Board Resolution giving effect to such designation
and an Officers' Certificate certifying that such designation complied with the
foregoing provisions.

                  "Unrestricted Subsidiary Indebtedness" means Indebtedness of
any Unrestricted Subsidiary (i) as to which neither the Company nor any
Restricted Subsidiary is directly or indirectly liable (by virtue of the
Company or any such Restricted Subsidiary being the primary obligor on,
guarantor of, or otherwise liable in any respect to, such Indebtedness), and
(ii) which, upon the occurrence of a default with respect thereto, does not
result in, or permit any holder of any Indebtedness of the Company or any
Restricted Subsidiary to declare, a default on such Indebtedness of the Company
or any Restricted Subsidiary or cause the payment thereof to be accelerated or
payable prior to its Stated Maturity.

                  "U.S. Government Obligations" has the meaning specified in
Section 1304.

                  "Vice President", when used with respect to the Company or
the Trustee, means any vice president, whether or not designated by a number or
a word or words added before or after the title "vice president".

                  "Voting Stock" means with respect to any Person, Capital
Stock of any class or kind ordinarily having the power to vote for the election
of directors, managers or other voting members of the governing body of such
Person.

                  "Wholly Owned", with respect to any Subsidiary, means a
Subsidiary of the Company if all of the outstanding Capital Stock in such
Subsidiary (other than any director's qualifying shares or Investments by
foreign nationals mandated by applicable law) is owned by the Company or one or
more Wholly Owned Subsidiaries of the Company.

                  "World Access Charitable Trust" means that certain World
Access Charitable Trust dated August 19, 1999, by and between World Access
Investment Corp., a Delaware corporation, and Clay C. Long, Esq., as trustee,
in favor of World Access Foundation, Inc., a Georgia nonprofit corporation.

SECTION 102.  Compliance Certificates and Opinions.

                  Upon any application or request by the Company to the Trustee
to take any action under any provision of this Indenture, the Company shall
furnish to the Trustee an Officer's Certificate stating that all conditions
precedent, if any, provided for in this Indenture (including any covenant
compliance with which constitutes a condition precedent) relating to the
proposed action have been complied with and an Opinion of Counsel stating that
in the opinion of such counsel all such conditions precedent, if any, have been
complied with, except that in the case of any such application or request as to
which the furnishing of such documents is specifically required by any
provision of this Indenture relating to such particular application or request,
no additional certificate or opinion need be furnished.


                                      22
<PAGE>   29
                  Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (other than pursuant to
Section 1008(a)) shall include:

                  (1)      a statement that each individual signing such
         certificate or opinion has read such covenant or condition and the
         definitions herein relating thereto;

                  (2)      a brief statement as to the nature and scope of the
         examination or investigation upon which the statements or opinions
         contained in such certificate or opinion are based;

                  (3)      a statement that, in the opinion of each such
         individual, he or she has made such examination or investigation as is
         necessary to enable him or her to express an informed opinion as to
         whether or not such covenant or condition has been complied with; and

                  (4)      a statement as to whether, in the opinion of each
         such individual, such condition or covenant has been complied with.

SECTION 103.  Form of Documents Delivered to Trustee.

                  In any case where several matters are required to be certified
by, or covered by an opinion of, any specified Person, it is not necessary that
all such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.

                  Any certificate or opinion of an officer of the Company may be
based, insofar as it relates to legal matters, upon a certificate or opinion of,
or representations by, counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to the matters upon which his certificate or opinion is based are
erroneous. Any such certificate or Opinion of Counsel may be based, insofar as
it relates to factual matters, upon a certificate or opinion of, or
representations by, an officer or officers of the Company stating that the
information with respect to such factual matters is in the possession of the
Company, unless such counsel knows, or in the exercise of reasonable care should
know, that the certificate or opinion or representations with respect to such
matters are erroneous.

                  Where any Person is required to make, give or execute two or
more applications, requests, consents, certificates, statements, opinions or
other instruments under this Indenture, they may, but need not, be consolidated
and form one instrument.

SECTION 104.  Acts of Holders.


                                       23
<PAGE>   30

                  (a)      Any request, demand, authorization, direction,
notice, consent, waiver or other action provided by this Indenture to be given
or taken by Holders may be embodied in and evidenced by one or more instruments
of substantially similar tenor signed by such Holders in person or by agents
duly appointed in writing; and, except as herein otherwise expressly provided,
such action shall become effective when such instrument or instruments are
delivered to the Trustee and, where it is hereby expressly required, to the
Company. Such instrument or instruments (and the action embodied therein and
evidenced thereby) are herein sometimes referred to as the "Act" of the Holders
signing such instrument or instruments. Proof of execution of any such
instrument or of a writing appointing any such agent shall be sufficient for any
purpose of this Indenture and conclusive in favor of the Trustee and the
Company, if made in the manner provided in this Section.

                  (b)      The fact and date of the execution by any Person of
any such instrument or writing may be proved by the affidavit of a witness of
such execution or by a certificate of a notary public or other officer
authorized by law to take acknowledgments of deeds, certifying that the
individual signing such instrument or writing acknowledged to him the execution
thereof. Where such execution is by a signer acting in a capacity other than his
individual capacity, such certificate or affidavit shall also constitute
sufficient proof of authority. The fact and date of the execution of any such
instrument or writing, or the authority of the Person executing the same, may
also be proved in any other manner that the Trustee deems sufficient.

                  (c)      The principal amount and serial numbers of Notes held
by any Person, and the date of holding the same, shall be proved by the
Register.

                  (d)      If the Company shall solicit from the Holders of
Notes any request, demand, authorization, direction, notice, consent, waiver or
other Act, the Company may, at its option, by or pursuant to a Board Resolution,
fix in advance a record date for the determination of Holders entitled to give
such request, demand, authorization, direction, notice, consent, waiver or other
Act, but the Company shall have no obligation to do so. Notwithstanding TIA
Section 316(c), such record date shall be the record date specified in or
pursuant to such Board Resolution, which shall be a date not earlier than the
date 30 days prior to the first solicitation of Holders generally in connection
therewith and not later than the date such solicitation is completed. If such a
record date is fixed, such request, demand, authorization, direction, notice,
consent, waiver or other Act may be given before or after such record date, but
only the Holders of record at the close of business on such record date shall be
deemed to be Holders for the purposes of determining whether Holders of the
requisite proportion of Outstanding Notes have authorized or agreed or consented
to such request, demand, authorization, direction, notice, consent, waiver or
other Act, and for that purpose the Outstanding Notes shall be computed as of
such record date; provided that no such authorization, agreement or consent by
the Holders on such record date shall be deemed effective unless it shall become
effective pursuant to the provisions of this Indenture not later than eleven
months after the record date.

                  (e)      Any request, demand, authorization, direction,
notice, consent, waiver or other Act of the Holder of any Note shall bind every
future Holder of the same Note and the


                                       24
<PAGE>   31

Holder of every Note issued upon the registration of transfer thereof or in
exchange therefor or in lieu thereof in respect of anything done, omitted or
suffered to be done by the Trustee or the Company in reliance thereon, whether
or not notation of such action is made upon such Note.

SECTION 105.  Notices, Etc., to Trustee, Company.

                  Any request, demand, authorization, direction, notice,
consent, waiver or Act of Holders or other document provided or permitted by
this Indenture to be made upon, given or furnished to, or filed with,

                  (1)      the Trustee by any Holder or by the Company shall be
         sufficient for every purpose hereunder if made, given, furnished or
         filed in writing to or with the Trustee at its Corporate Trust Office,
         or

                  (2)      the Company by the Trustee or by any Holder shall be
         sufficient for every purpose hereunder (unless otherwise herein
         expressly provided) if in writing and mailed, first-class postage
         prepaid, to the Company addressed to it at the address of its principal
         office specified in the first paragraph of this Indenture, or at any
         other address previously furnished in writing to the Trustee by the
         Company.

SECTION 106.  Notice to Holders; Waiver.

                  Where this Indenture provides for notice of any event to
Holders by the Company or the Trustee, such notice shall be sufficiently given
(unless otherwise herein expressly provided) if in writing and mailed,
first-class postage prepaid, to each Holder affected by such event, at his
address as it appears in the Register, not later than the latest date, and not
earlier than the earliest date, prescribed for the giving of such notice. In any
case where notice to Holders is given by mail, neither the failure to mail such
notice, nor any defect in any notice so mailed, to any particular Holder shall
affect the sufficiency of such notice with respect to other Holders. Any notice
mailed to a Holder in the manner herein prescribed shall be conclusively deemed
to have been received by such Holder, whether or not such Holder actually
receives such notice. Where this Indenture provides for notice in any manner,
such notice may be waived in writing by the Person entitled to receive such
notice, either before or after the event, and such waiver shall be the
equivalent of such notice. Waivers of notice by Holders shall be filed with the
Trustee, but such filing shall not be a condition precedent to the validity of
any action taken in reliance upon such waiver.

                  In case by reason of the suspension of or irregularities in
regular mail service or by reason of any other cause, it shall be impracticable
to mail notice of any event to Holders when such notice is required to be given
pursuant to any provision of this Indenture, then any manner of giving such
notice as shall be satisfactory to the Trustee shall be deemed to be a
sufficient giving of such notice for every purpose hereunder.

SECTION 107.  Effect of Headings and Table of Contents.


                                       25
<PAGE>   32

                  The Article and Section headings herein and the Table of
Contents are for convenience only and shall not affect the construction hereof.

SECTION 108.  Successors and Assigns.

                  All covenants and "agreements" in this Indenture by the
Company shall bind its successors and assigns, whether so expressed or not.

SECTION 109.  Separability Clause.

                  In case any provision in this Indenture or in the Notes shall
be invalid, illegal or unenforceable, the validity, legality and enforceability
of the remaining provisions shall not in any way be affected or impaired
thereby.

SECTION 110.  Benefits of Indenture.

                  Nothing in this Indenture or in the Notes, express or implied,
shall give to any Person, other than the parties hereto, any Paying Agent, any
Notes Registrar and their successors hereunder, and the Holders, any benefit or
any legal or equitable right, remedy or claim under this Indenture.

SECTION 111.  Governing Law.

                  This Indenture and the Notes shall be governed by and
construed in accordance with the laws of the State of New York. This Indenture
is subject to the provisions of the Trust Indenture Act that are required to be
part of this Indenture and shall, to the extent applicable, be governed by such
provisions. Each of the parties hereto submits to the jurisdiction of the U.S.
federal and any New York state court located in the Borough of Manhattan, The
City and State of New York with respect to any actions brought against it as
defendant in any suit, action or proceeding arising out of or relative to this
Indenture or the Notes and waives any rights to which it may be entitled on
account of place of residence or domicile.

SECTION 112.  Legal Holidays.

                  In any case where any Interest Payment Date, Redemption Date,
sinking fund payment date or Stated Maturity or Maturity of any Note shall not
be a Business Day, then (notwithstanding any other provision of this Indenture
or of the Notes) payment of principal (or premium, if any) or interest need not
be made on such date, but may be made on the next succeeding Business Day with
the same force and effect as if made on such Interest Payment Date, Redemption
Date or sinking fund payment date, or at the Stated Maturity or Maturity;
provided that no interest shall accrue for the period from and after such
Interest Payment Date, Redemption Date, sinking fund payment date, Stated
Maturity or Maturity, as the case may be.


                                       26
<PAGE>   33

                                   ARTICLE TWO

                                   NOTE FORMS

SECTION 201.  Forms Generally.

                  The Notes and the Trustee's certificate of authentication
shall be substantially in the form annexed hereto as Exhibit A with such
appropriate insertions, omissions, substitutions and other variations as are
required or permitted by this Indenture. The Notes may have notations, legends
or endorsements required by law, stock exchange agreements to which the Company
is subject or usage. The Company shall approve the form of the Notes and any
notation, legend or endorsement on the Notes.

                  The terms and provisions contained in the form of the Notes
annexed hereto as Exhibit A shall constitute, and are hereby expressly made, a
part of this Indenture. To the extent applicable, the Company and the Trustee,
by their execution and delivery of this Indenture, expressly agree to such terms
and provisions and to be bound thereby.

                  Notes shall be issued initially in the form of one or more
permanent global Notes in registered form, substantially in the form set forth
in Exhibit A (the "Global Notes"), registered in the name of the Depositary or
the nominee of the Depositary, deposited with the Trustee, as custodian for the
Depositary, duly executed by the Company and authenticated by the Trustee as
hereinafter provided. Ownership of beneficial interests in Global Notes will be
limited to Participants or Indirect Participants.

                  The definitive Notes shall be typed, printed, lithographed or
engraved or produced by any combination of these methods or may be produced in
any other manner permitted by the rules of any securities exchange on which the
Notes may be listed, all as determined by the officers executing such Notes, as
evidenced by their execution of such Notes.

SECTION 202.  Restrictive Legends.

                  Each Global Note shall bear the following legend on the face
thereof:

         UNLESS THIS CERTIFICATE IS PRESENTED, BY AN AUTHORIZED REPRESENTATIVE
         OF THE DEPOSITORY TRUST COMPANY, TO THE COMPANY OR ITS AGENT FOR
         REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
         ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR TO SUCH OTHER ENTITY
         AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST
         COMPANY OR SUCH OTHER REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY OR
         SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE
         DEPOSITORY TRUST COMPANY (AND ANY PAYMENT HEREON IS MADE TO CEDE & CO.
         OR TO SUCH OTHER ENTITY AS


                                       27
<PAGE>   34

         IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST
         COMPANY), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
         OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER
         HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

         TRANSFERS OF THIS GLOBAL NOTE SHALL BE LIMITED TO TRANSFERS IN WHOLE,
         BUT NOT IN PART, TO NOMINEES OF CEDE & CO. OR TO A SUCCESSOR THEREOF OR
         SUCH SUCCESSOR'S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL NOTE
         SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS
         SET FORTH IN SECTION 311 OF THE INDENTURE.


                                  ARTICLE THREE

                                    THE NOTES

SECTION 301.  Title and Terms.

                  The aggregate principal amount of Notes which may be
authenticated and delivered under this Indenture is limited to $300,000,000,
except for Notes authenticated and delivered upon registration of transfer of,
or in exchange for, or in lieu of, other Notes pursuant to Section 303, 304,
305, 306, 906, 1010, 1017 or 1108.

                  The Notes shall be known and designated as the "13.25% Senior
Notes due 2008" of the Company. The Stated Maturity of the principal of the
Notes shall be January 15, 2008 and they shall bear interest at the rate of
13.25% per annum, payable on January 15 and July 15 of each year, commencing on
January 15, 2000 (or July 15, 2000, if the Exchange Date does not occur prior to
January 1, 2000), until the principal thereof is paid or duly provided for.
Interest on the Notes will accrue from the most recent Interest Payment Date for
which interest has been paid or, if no interest has been paid, from the Exchange
Date.

                  The principal of (and premium, if any) and interest on the
Notes shall be payable at the office or agency of the Company maintained for
such purpose pursuant to Section 1002, or, at the option of the Company,
interest may be paid by check mailed to addresses of the Persons entitled
thereto as such addresses shall appear on the Register; provided that all
payments with respect to the Global Notes the Holders of which have given wire
transfer instructions to the Company will be required to be made by wire
transfer of immediately available funds to the accounts specified by the Holders
thereof.

                  The Notes shall be redeemable as provided in Article Eleven.


                                       28
<PAGE>   35

SECTION 302.  Denominations.

                  The Notes shall be issuable only in registered form without
coupons and only in denominations of $1,000 and any integral multiple thereof.

SECTION 303.  Execution, Authentication, Delivery and Dating.

                  The Notes shall be executed on behalf of the Company by its
chairman, its president, chief financial officer or any Vice President. The
signature of any of these officers on the Notes may be manual or facsimile
signatures of the present or any future such authorized officer and may be
imprinted or otherwise reproduced on the Notes.

                  Notes bearing the manual or facsimile signatures of
individuals who were at any time the proper officers of the Company shall bind
the Company, notwithstanding that such individuals or any of them have ceased to
hold such offices prior to the authentication and delivery of such Notes or did
not hold such offices at the date of such Notes.

                  At any time and from time to time after the execution and
delivery of this Indenture, the Company may deliver Notes executed by the
Company to the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Notes directing the Trustee to authenticate
the Notes and certifying that all conditions precedent to the issuance of Notes
contained herein have been fully complied with, and the Trustee in accordance
with such Company Order shall authenticate and deliver such Notes. The Trustee
shall be entitled to receive an Officer's Certificate and an Opinion of Counsel
of the Company that it may reasonably request in connection with such
authentication of Notes. Such order shall specify the amount of Notes to be
authenticated and the date on which the original issue of Notes is to be
authenticated.

                  Each Note shall be dated the date of its authentication.

                  No Note shall be entitled to any benefit under this Indenture
or be valid or obligatory for any purpose unless there appears on such Note a
certificate of authentication, substantially in the form provided for in Exhibit
A, duly executed by the Trustee by manual signature of an authorized officer,
and such certificate upon any Note shall be conclusive
evidence, and the only evidence, that such Note has been duly authenticated and
delivered hereunder and is entitled to the benefits of this Indenture.

                  In case the Company, pursuant to Article Eight, shall be
consolidated or merged with or into any other Person or shall convey, transfer,
lease or otherwise dispose of its properties and assets substantially as an
entirety in a transaction or a series of transactions to any Person, and the
successor Person resulting from such consolidation, or surviving such merger, or
into which the Company shall have been merged, or the Person which shall have
received a conveyance, transfer, lease or other disposition as aforesaid, shall
have executed an indenture supplemental hereto with the Trustee pursuant to
Article Eight, any of the Notes authenticated or


                                       29
<PAGE>   36

delivered prior to such consolidation, merger, conveyance, transfer, lease or
other disposition may, from time to time, at the request of the successor
Person, be exchanged for other Notes executed in the name of the successor
Person with such changes in phraseology and form as may be appropriate, but
otherwise in substance of like tenor as the Notes surrendered for such exchange
and of like principal amount; and the Trustee, upon Company Request of the
successor Person, shall authenticate and deliver Notes as specified in such
request for the purpose of such exchange. If Notes shall at any time be
authenticated and delivered in any new name of a successor Person pursuant to
this Section in exchange or substitution for or upon registration of transfer of
any Notes, such successor Person, at the option of the Holders but without
expense to them, shall provide for the exchange of all Notes at the time
Outstanding for Notes authenticated and delivered in such new name.

SECTION 304.  Temporary Notes.

                  Pending the preparation of definitive Notes, the Company may
execute, and upon Company Order the Trustee shall authenticate and deliver,
temporary Notes which are printed, lithographed, typewritten, mimeographed or
otherwise produced, in any authorized denomination, substantially of the tenor
of the definitive Notes in lieu of which they are issued and with such
appropriate insertions, omissions, substitutions and other variations as the
officers executing such Notes may determine, as conclusively evidenced by their
execution of such Notes.

                  If temporary Notes are issued, the Company shall cause
definitive Notes to be prepared without unreasonable delay. After the
preparation of definitive Notes, the temporary Notes shall be exchangeable for
definitive Notes upon surrender of the temporary Notes at the office or agency
of the Company designated for such purpose pursuant to Section 1002 without
charge to the Holder. Upon surrender for cancellation of any one or more
temporary Notes, the Company shall execute and upon Company Order the Trustee
shall authenticate and deliver in exchange therefor a like principal amount of
definitive Notes of authorized denominations. Until so exchanged, the temporary
Notes shall in all respects be entitled to the same benefits under this
Indenture as definitive Notes.

SECTION 305.  Registration, Registration of Transfer and Exchange.

                  The Company shall cause to be kept at the Corporate Trust
Office of the Trustee a register (the register maintained in such office and in
any other office or agency designated pursuant to Section 1002 being herein
sometimes referred to as the "Register") in which, subject to such reasonable
regulations as it may prescribe, the Company shall provide for the registration
of Notes and of transfers of Notes. The Register shall be in written form or any
other form capable of being converted into written form within a reasonable
time. At all reasonable times, the Register shall be open to inspection by the
Trustee. The Trustee is hereby initially appointed as security registrar (the
"Registrar") for the purpose of registering Notes and transfers of Notes as
herein provided.


                                       30
<PAGE>   37

                  Upon surrender for registration of transfer of any Note at the
office or agency of the Company designated pursuant to Section 1002, the Company
shall execute, and the Trustee shall authenticate and deliver, in the name of
the designated transferee or transferees, one or more new Notes of any
authorized denomination or denominations of a like aggregate principal amount.

                  At the option of the Holder, Notes may be exchanged for other
Notes of any authorized denomination and of a like aggregate principal amount,
upon surrender of the Notes to be exchanged at such office or agency. Whenever
any Notes are so surrendered for exchange, the Company shall execute, and the
Trustee shall authenticate and deliver, the Notes which the Holder making the
exchange is entitled to receive.

                  All Notes issued upon any registration of transfer or exchange
of Notes shall be the valid obligations of the Company, evidencing the same
debt, and entitled to the same benefits under this Indenture, as the Notes
surrendered upon such registration of transfer or exchange.

                  Every Note presented or surrendered for registration of
transfer or for exchange shall be duly endorsed and be accompanied by a written
instrument of transfer, in form satisfactory to the Company and the Registrar,
duly executed by the Holder thereof or his attorney duly authorized in writing.

                  No service charge shall be made for any registration of
transfer or exchange or redemption of Notes, but the Company may require payment
of a sum sufficient to cover any tax or other governmental charge that may be
imposed in connection with any registration of transfer or exchange of Notes,
other than exchanges pursuant to Section 304, 906, 1010, 1017 or 1108 not
involving any transfer.

                  The Company shall not be required (i) to issue, register the
transfer of or exchange any Note during a period beginning at the opening of
business 15 days before the selection of Notes to be redeemed under Section 1104
and ending at the close of business on the day of such mailing of the relevant
notice of redemption, or (ii) to register the transfer of or exchange any Note
so selected for redemption in whole or in part, except the unredeemed portion of
any Note being redeemed in part.

SECTION 306.  Mutilated, Destroyed, Lost and Stolen Notes.

                  If (i) any mutilated Note is surrendered to the Trustee, or
(ii) the Company and the Trustee receive evidence to their satisfaction of the
destruction, loss or theft of any Note, and there is delivered to the Company
and the Trustee such security or indemnity as may be required by them to save
each of them harmless, then, in the absence of notice to the Company or the
Trustee that such Note has been acquired by a bona fide purchaser, the Company
shall execute and upon Company Order the Trustee shall authenticate and deliver,
in exchange for any such mutilated Note or in lieu of any such destroyed, lost
or stolen Note, a new Note of like tenor and principal amount, bearing a number
not contemporaneously outstanding.


                                       31
<PAGE>   38

                  In case any such mutilated, destroyed, lost or stolen Note has
become or is about to become due and payable, the Company in its discretion may,
instead of issuing a new Note, pay such Note.

                  Upon the issuance of any new Note under this Section 306, the
Company may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

                  Every new Note issued pursuant to this Section 306 in lieu of
any mutilated, destroyed, lost or stolen Note shall constitute an original
additional contractual obligation of the Company, whether or not the mutilated,
destroyed, lost or stolen Note shall be at any time enforceable by anyone, and
shall be entitled to all benefits of this Indenture equally and proportionately
with any and all other Notes duly issued hereunder.

                  The provisions of this Section 306 are exclusive and shall
preclude (to the extent lawful) all other rights and remedies with respect to
the replacement or payment of mutilated, destroyed, lost or stolen Notes.

SECTION 307.  Payment of Interest; Interest Rights Preserved.

                  Interest on any Note which is payable, and is punctually paid
or duly provided for, on any Interest Payment Date shall be paid to the Person
in whose name such Note (or Predecessor Notes) is registered at the close of
business on the Regular Record Date (or if a Predecessor Note is outstanding on
such Regular Record Date, such Predecessor Note) for such interest at the office
or agency of the Company maintained for such purpose pursuant to Section 1002
or, at the option of the Company, interest may be paid by check mailed to the
address of the Person entitled thereto as such address shall appear on the
Register; provided that all payments with respect to Global Notes the Holders of
which have given wire transfer instructions to the Company will be required to
be made by wire transfer of immediately available funds to the accounts
specified by the Holders thereof.

                  Any interest on any Note which is payable, but is not
punctually paid or duly provided for, on any Interest Payment Date shall
forthwith cease to be payable to the Holder on the Regular Record Date by virtue
of having been such Holder, and such defaulted interest and (to the extent
lawful) interest on such defaulted interest at the rate borne by the Notes (such
defaulted interest and interest thereon herein collectively called "Defaulted
Interest") may be paid by the Company, at its election in each case, as provided
in clause (1) or (2) below:

                  (1)      The Company may elect to make payment of any
         Defaulted Interest to the Persons in whose names the Notes (or their
         respective Predecessor Notes) are registered at the close of business
         on a special record date ("Special Record Date") for the payment of
         such Defaulted Interest, which shall be fixed in the following manner.
         The Company shall notify the Trustee in writing of the amount of
         Defaulted Interest proposed to be paid


                                       32
<PAGE>   39

         on each Note and the date of the proposed payment, and at the same time
         the Company shall deposit with the Trustee an amount of money equal to
         the aggregate amount proposed to be paid in respect of such Defaulted
         Interest or shall make arrangements satisfactory to the Trustee for
         such deposit prior to the date of the proposed payment, such money when
         deposited to be held in trust for the benefit of the Persons entitled
         to such Defaulted Interest as in this clause provided. Thereupon the
         Trustee shall fix a Special Record Date for the payment of such
         Defaulted Interest which shall be not more than 15 days and not less
         than 10 days prior to the date of the proposed payment and not less
         than 10 days after the receipt by the Trustee of the notice of the
         proposed payment. The Trustee shall promptly notify the Company of such
         Special Record Date and, in the name and at the expense of the Company,
         shall cause notice of the proposed payment of such Defaulted Interest
         and the Special Record Date therefor to be given in the manner provided
         for in Section 106 not less than 10 days prior to such Special Record
         Date. Notice of the proposed payment of such Defaulted Interest and the
         Special Record Date therefor having been so given, such Defaulted
         Interest shall be paid to the Persons in whose names the Notes (or
         their respective Predecessor Notes) are registered at the close of
         business on such Special Record Date and shall no longer be payable
         pursuant to the following clause (2).

                  (2)      The Company may make payment of any Defaulted
         Interest in any other lawful manner not inconsistent with the
         requirements of any securities exchange on which the Notes may be
         listed, and upon such notice as may be required by such exchange, if,
         after notice given by the Company to the Trustee of the proposed
         payment pursuant to this clause, such manner of payment shall be deemed
         practicable by the Trustee.

                  Subject to the foregoing provisions of this Section 307, each
Note delivered under this Indenture upon registration of transfer of or in
exchange for or in lieu of any other Note shall carry the rights to interest
accrued and unpaid, and to accrue, which were carried by such other Note.

SECTION 308.  Persons Deemed Owners.

                  Prior to the due presentment of a Note for registration of
transfer, the Company, the Trustee and any agent of the Company or the Trustee
may treat the Person in whose name such Note is registered as the owner of such
Note for the purpose of receiving payment of principal of (and premium, if any)
and (subject to Sections 305 and 307) interest on such Note and for all other
purposes whatsoever, whether or not such Note be overdue, and none of the
Company, the Trustee or any agent of the Company or the Trustee shall be
affected by notice to the contrary.


                                       33
<PAGE>   40

SECTION 309.  Cancellation.

                  All Notes surrendered for payment, redemption, registration of
transfer or exchange shall, if surrendered to any Person other than the Trustee,
be delivered to, and promptly cancelled by, the Trustee. The Company may at any
time deliver to the Trustee for cancellation any Notes previously authenticated
and delivered hereunder which the Company may have acquired in any manner
whatsoever, and may deliver to the Trustee (or to any other Person for delivery
to the Trustee) for cancellation any Notes previously authenticated hereunder
which the Company has not issued and sold, and all Notes so delivered shall be
promptly cancelled by the Trustee. If the Company shall so acquire any of the
Notes, however, such acquisition shall not operate as a redemption or
satisfaction of the Indebtedness represented by such Notes unless and until the
same are surrendered to the Trustee for cancellation. No Notes shall be
authenticated in lieu of or in exchange for any Notes cancelled as provided in
this Section, except as expressly permitted by this Indenture. All cancelled
Notes held by the Trustee shall be disposed of by the Trustee in accordance with
its customary procedures and certification of their disposal delivered to the
Company unless by Company Order the Company shall direct that cancelled Notes be
returned to it after being appropriately designated as cancelled.

SECTION 310.  Computation of Interest.

                  Interest on the Notes shall be computed on the basis of a
360-day year of twelve 30-day months.

SECTION 311.  Book-Entry Provisions for Global Notes.

                  (a)      Each Global Note initially shall (i) be registered in
the name of the Depositary for such Global Notes or the nominee of such
Depositary, (ii) be delivered to the Trustee as custodian for such Depositary
and (iii) bear legends as set forth in Section 202.

                  Except as provided in Section 311(b), owners of beneficial
interests in the Global Notes will not have Notes registered in their names,
will not receive physical delivery of Notes in certificated form and will not be
considered the registered owner or Holder thereof under this Indenture for any
purpose.

                  Members of, or Participants in, the Depositary shall have no
rights under this Indenture with respect to any Global Note, and the Depositary
may be treated by the Company, the Trustee and any agent of the Company or the
Trustee as the absolute owner of such Global Note for all purposes whatsoever.
Notwithstanding the foregoing, nothing herein shall prevent the Company, the
Trustee or any agent of the Company or the Trustee from giving effect to any
written certification, proxy or other authorization furnished by the Depositary
or impair, as between the Depositary and its Participants, the operation of
customary practices governing the exercise of the rights of a beneficial owner
of any Note. The registered Holder of a Global Note may grant proxies and
otherwise authorize any person, including Participants and persons that


                                       34
<PAGE>   41

may hold interests through Participants, to take any action which a Holder is
entitled to take under this Indenture or the Notes.

                  (b)      Interests of beneficial owners in a Global Note may
be transferred in accordance with the applicable rules and procedures of the
Depositary. Transfers of a Global Note shall be limited to transfers of such
Global Note in whole, but not in part, to the Depositary, a nominee of the
Depositary, its successors or their respective nominees. Interests of beneficial
owners in the Global Notes may be transferred in accordance with the rules and
procedures of the Depositary. Notes in certificated form shall be transferred to
beneficial owners in exchange for their beneficial interests in the Global Note,
as the case may be, if (i) the Depositary (A) notifies the Company that it is
unwilling or unable to continue as depository for the Global Notes and the
Company thereupon fails to appoint a successor depository or (B) has ceased to
be a clearing agency registered under the Exchange Act; (ii) there shall have
occurred and be continuing an Event of Default with respect to the Notes; or
(iii) the Company, at its option, notifies the Trustee in writing that it elects
to cause issuance of the Notes in certificated form. In connection with a
transfer of an entire Global Note to beneficial owners pursuant to clause (i),
(ii) or (iii) of this paragraph (b), the applicable Global Note shall be deemed
to be surrendered to the Trustee for cancellation, and the Company shall
execute, and the Trustee shall authenticate and deliver, to each beneficial
owner identified by the Depositary in exchange for its beneficial interest in
the applicable Global Note, an equal aggregate principal amount of certificated
notes of authorized denominations.


                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

SECTION 401.  Satisfaction and Discharge of Indenture.

                  This Indenture shall upon Company Request cease to be of
further effect (except as to surviving rights of registration of transfer or
exchange of Notes as expressly provided for herein or pursuant hereto) and the
Trustee, at the expense of the Company, shall execute proper instruments
acknowledging satisfaction and discharge of this Indenture when

                  (1)   either

                           (A)      All Notes theretofore authenticated and
                  delivered (other than (i) Notes which have been destroyed,
                  lost or stolen and which have been replaced or paid as
                  provided in Section 306 and (ii) Notes for whose payment money
                  has theretofore been deposited in trust with the Trustee or
                  any Paying Agent or segregated and held in trust by the
                  Company and thereafter repaid to the Company or discharged
                  from such trust, as provided in Section 1003) have been
                  delivered to the Trustee for cancellation; or


                                       35
<PAGE>   42

                           (B)      all such Notes not theretofore delivered to
                  the Trustee for cancellation (other than Notes which have been
                  destroyed, lost or stolen and which have been replaced or paid
                  as provided in Section 306)

                                    (i)      have become due and payable, or

                                    (ii)     will become due and payable at
                           their Stated Maturity within one year, or

                                    (iii)    are to be called for redemption
                           within one year under arrangements satisfactory to
                           the Trustee for the giving of notice of redemption by
                           the Trustee in the name, and at the expense, of the
                           Company,

                  and the Company, in the case of (i), (ii) or (iii) above, has
                  irrevocably deposited or caused to be deposited with the
                  Trustee as trust funds in trust for such purpose in an amount
                  sufficient to pay and discharge the entire Indebtedness on
                  such Notes not theretofore delivered to the Trustee for
                  cancellation, for principal (and premium, if any) and interest
                  to the date of such deposit (in the case of Notes which have
                  become due and payable) or to the Stated Maturity or
                  Redemption Date, as the case may be, together with irrevocable
                  instructions from the Company directing the Trustee to apply
                  such funds to the payment thereof at Stated Maturity or
                  redemption, as the case may be;

                           (2)      the Company has paid or caused to be paid
                  all other sums payable hereunder by the Company; and

                           (3)      the Company has delivered to the Trustee an
                  Officer's Certificate and an Opinion of Counsel, each stating
                  that all conditions precedent herein provided for relating to
                  the satisfaction and discharge of this Indenture have been
                  complied with.

                  Notwithstanding the satisfaction and discharge of this
Indenture, the obligations of the Company to the Trustee under Section 606 and,
if money shall have been deposited with the Trustee pursuant to subclause (B) of
clause (1) of this Section, the obligations of the Trustee under Section 402 and
the last paragraph of Section 1003 shall survive.

SECTION 402.  Application of Trust Money

                  On or prior to the effective date of this Indenture, the
Trustee shall establish a segregated, non-interest bearing corporate trust
account (the "Payment Account") maintained by the Trustee for the benefit of the
Holders in which all amounts paid to the Trustee for the benefit
of the Holders in respect of the Notes will be held (except for amount
designated to be deposited into the Pledge Account) and from which the Trustee
(if the Trustee is the Paying Agent) shall


                                       36
<PAGE>   43

make payments to the Holders in accordance with this Indenture and the Notes.
Subject to the provisions of the last paragraph of Section 1003, all money
deposited with the Trustee pursuant to Section 401 and otherwise pursuant to
this Indenture shall be held in trust and applied by it, in accordance with the
provisions of the Notes and this Indenture, to the payment, either directly or
through any Paying Agent (including the Company acting as its own Paying Agent)
as the Trustee may determine, to the Persons entitled thereto, of the principal
(and premium, if any) and interest for whose payment such money has been
deposited with the Trustee.

                                  ARTICLE FIVE

                                    REMEDIES

SECTION 501.  Events of Default.

                  "Event of Default", wherever used herein, means any one of the
following events (whatever the reason for such Event of Default and whether it
shall be voluntary or involuntary or be effected by operation of law or pursuant
to any judgment, decree or order of any court or any order, rule or regulation
of any administrative or governmental body):

                  (1)      default in the payment of any interest on any Note
         when due and payable as to any Interest Payment Date falling on or
         prior to January 15, 2001; or

                  (2)      default in the payment of interest on any Note when
         due and payable as to any Interest Payment Date following after January
         15, 2001, and any such failure continued for a period of 30 days; or

                  (3)      default in the payment of the principal of (or
         premium, if any, on) any Note at its Stated Maturity, upon
         acceleration, redemption or otherwise; or

                  (4)      default in the payment of principal or interest on
         any Note required to be purchased pursuant to an Offer to Purchase or
         an Excess Proceeds Offer as described in Section 1017 or pursuant to a
         Change of Control Offer as described in Section 1010; or

                  (5)      failure to perform or comply with the provisions of
         Section 801; or

                  (6)      default in the performance or breach of any covenant
         or agreement of the Company in this Indenture or under the Notes (other
         than a default in the performance, or breach, of a covenant or
         agreement which is specifically dealt with elsewhere in this Section),
         and continuance of such default or breach for a period of 30
         consecutive days after there has been given to the Company by the
         Trustee or the Holders of at least 25% or more in aggregate principal
         amount of the Notes then Outstanding a written notice specifying such
         default or breach; or


                                       37
<PAGE>   44

                  (7)      (A) there shall have occurred with respect to any
         issue or issues of Indebtedness of the Company or any Restricted
         Subsidiary having an outstanding principal amount of $5 million or more
         in the aggregate for all such issues of all such Persons, whether such
         Indebtedness now exists or shall hereafter be created, (I) an event of
         default that has caused the Holder thereof to declare such Indebtedness
         to be due and payable prior to its Stated Maturity and such
         Indebtedness has not been discharged in full or such acceleration has
         not been rescinded or annulled by the expiration of any applicable
         grace period and/or (II) the failure to make a principal payment at the
         final (but not any interim) fixed Maturity Date thereon and such
         defaulted payment shall not have been made, waived or extended by the
         expiration of any applicable grace period; or

                  (8)      any final judgment or order (not covered by
         insurance) for the payment of money in excess of $5 million in the
         aggregate for all such final judgments or orders against all such
         Persons (treating any deductibles, self-insurance or retention as not
         so covered) shall be rendered against the Company or any Restricted
         Subsidiary and shall not be paid or discharged, and there shall be any
         period of 30 consecutive days following entry of the final judgment or
         order that causes the aggregate amount for all such final judgments or
         orders outstanding and not paid or discharged against all such Persons
         to exceed $5 million during which a stay of enforcement of such final
         judgment or order, by reason of a pending appeal or otherwise, shall
         not be in effect; or

                  (9)      a court having jurisdiction in the premises enters a
         decree or order for (A) relief in respect of the Company or any of its
         Significant Subsidiaries in an involuntary case under any applicable
         bankruptcy, insolvency or other similar law now or hereafter in effect,
         (B) appointment of a receiver, liquidator, assignee, custodian,
         trustee, sequestrator or similar official of the Company or any of its
         Significant Subsidiaries or for all or substantially all of the
         property and assets of the Company or any of its Significant
         Subsidiaries or (C) the winding up or liquidation of the affairs of the
         Company or any of its Significant Subsidiaries and, in each case, such
         decree or order shall remain unstayed and in effect for a period of 30
         consecutive days; or

                  (10)     the Company or any of its Significant Subsidiaries
         (A) commences a voluntary case under any applicable bankruptcy,
         insolvency or other similar law now or hereafter in effect, or consents
         to the entry of an order for relief in an involuntary case under any
         such law, (B) consents to the appointment of or taking possession by a
         receiver, liquidator, assignee, custodian, trustee, sequestrator or
         similar official of the Company or any of its Significant Subsidiaries
         or for all or substantially all of the property and assets of the
         Company or any of its Significant Subsidiaries or (C) effects any
         general assignment for the benefit of creditors; or

                  (11)     the Company asserts in writing that the Pledge
         Agreement ceases to be in full force and effect before payment in full
         of the obligations thereunder.


                                       38
<PAGE>   45

SECTION 502.  Acceleration of Maturity; Rescission and Annulment.

                  If an Event of Default (other than an Event of Default
specified in Section 501(9) or 501(10)) occurs and is continuing, then and in
every such case the Trustee or the Holders of not less than 25% in aggregate
principal amount of the Notes Outstanding by a notice in writing to the Company
(and to the Trustee if such notice given by such Holders), may, and the Trustee
at the request of such Holders shall, declare the principal of, premium, if any,
and accrued but unpaid interest on all the Notes to be immediately due and
payable. Upon any such declaration of acceleration, such principal of, premium,
if any, and accrued interest shall become immediately due and payable. If an
Event of Default specified in Section 501(9) or 501(10) occurs, then the
principal of, premium, if any, and accrued interest shall ipso facto become and
be immediately due and payable without any declaration or other act on the part
of the Trustee or any Holder.

                  At any time after a declaration of acceleration has been made,
the Holders of at least a majority in aggregate principal amount of the Notes
Outstanding, by written notice to the Company and the Trustee, may rescind and
annul such declaration and its consequences if:

                  (1)      all existing Events of Default, other than the
         nonpayment of amounts of principal of, premium, if any, and accrued and
         unpaid interest on the Notes which have become due solely by such
         declaration of acceleration, have been cured or waived subject to the
         limitations set forth in Section 513; and

                  (2)      the rescission, in the opinion of counsel, would not
         conflict with any judgment or decrees of a court of competent
         jurisdiction.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.

                  Notwithstanding the preceding paragraph, in the event of a
declaration of acceleration in respect of the Notes because an Event of Default
specified in Section 501(7) shall have occurred and be continuing, such
declaration of acceleration shall be automatically annulled if the Indebtedness
that is the subject of such Event of Default has been discharged or the Holders
thereof have rescinded their declaration of acceleration in respect of such
Indebtedness, and written notice of such discharge or rescission, as the case
may be, shall have been given to the Trustee by the Company and countersigned by
the Holders of such Indebtedness or a trustee, fiduciary or agent for such
Holders, within 60 days after such declaration of acceleration in respect of the
Notes, and no other Event of Default has occurred during such 60-day period
which has not been cured or waived during such period.

SECTION 503.  Collection of Indebtedness and Suits for Enforcement by Trustee.

                  The Company covenants that if


                                       39
<PAGE>   46

                  (a)      default is made in the payment of any installment of
         interest on any Note when such interest becomes due and payable and
         such default continues for a period of 30 days, or

                  (b)      default is made in the payment of the principal of
         (or premium, if any, on) any Note at the Maturity thereof,

the Company shall pay to the Trustee for the benefit of the Holders of such
Notes, the whole amount then due and payable on such Notes for principal (and
premium, if any) and interest, and interest on any overdue principal (and
premium, if any) and, to the extent that payment of such interest shall be
legally enforceable, upon any overdue installment of interest at the rate borne
by the Notes, and, in addition thereto, such further amount as shall be
sufficient to cover the costs and expenses of collection, including the
reasonable compensation, fees expenses, disbursements and advances of the
Trustee, its agents and counsel.

                  If the Company fails to pay such amounts forthwith upon such
demand, the Trustee, in its own name as trustee of an express trust, may
institute a judicial proceeding for the collection of the sums so due and
unpaid, may prosecute such proceeding to judgment or final decree and may
enforce the same against the Company or any other obligor upon the Notes and
collect the moneys adjudged or decreed to be payable in the manner provided by
law out of the property of the Company or any other obligor upon the Notes,
wherever situated.

                  If an Event of Default occurs and is continuing, the Trustee
may in its discretion proceed to protect and enforce its rights and the rights
of the Holders by such appropriate judicial proceedings as the Trustee shall
deem most effectual to protect and enforce any such rights, whether for the
specific enforcement of any covenant or agreement in this Indenture or in aid of
the exercise of any power granted herein, or to enforce any other proper remedy.

SECTION 504.  Trustee May File Proofs of Claim.

                  In case of the pendency of any receivership, insolvency,
liquidation, bankruptcy, reorganization, arrangement, adjustment, composition or
other judicial proceeding relative to the Company or any other obligor upon the
Notes or the property of the Company or of such other obligor or their
creditors, the Trustee (irrespective of whether the principal of the Notes shall
then be due and payable as therein expressed or by declaration or otherwise and
irrespective of whether the Trustee shall have made any demand on the Company
for the payment of overdue principal, premium, if any, or interest) shall be
entitled and empowered, by intervention in such proceeding or otherwise,

                  (i) to file and prove a claim for the whole amount of
         principal (and premium, if any) and interest owing and unpaid in
         respect of the Notes and to file such other papers or documents and
         take other actions as the Trustee may deem necessary or advisable in
         order to have the claims of the Trustee (including any claim for the
         reasonable


                                       40
<PAGE>   47

         compensation, expenses, disbursements and advances of the Trustee, its
         agents and counsel) and of the Holders allowed in such judicial
         proceeding, and

                  (ii)     to collect and receive any moneys or other property
         payable or deliverable on any such claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
similar official in any such judicial proceeding is hereby authorized by each
Holder to make such payments to the Trustee and, in the event that the Trustee
shall consent to the making of such payments directly to the Holders, to pay the
Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any other
amounts due the Trustee under Section 606.

                  Nothing herein contained shall be deemed to authorize the
Trustee to authorize or consent to or accept or adopt on behalf of any Holder
any plan of reorganization, arrangement, adjustment or composition affecting the
Notes or the rights of any Holder thereof, or to authorize the Trustee to vote
in respect of the claim of any Holder in any such proceeding.

SECTION 505.  Trustee May Enforce Claims Without Possession of Notes.

                  All rights of action and claims under this Indenture or the
Notes may be prosecuted and enforced by the Trustee without the possession of
any of the Notes or the production thereof in any proceeding relating thereto,
and any such proceeding instituted by the Trustee shall be brought in its own
name and as trustee of an express trust, and any recovery of judgment shall,
after provision for the payment of the reasonable compensation, fees, expenses,
disbursements and advances of the Trustee, its agents and counsel, be for the
ratable benefit of the Holders of the Notes in respect of which such judgment
has been recovered.

SECTION 506.  Application of Money Collected.

                  Any money collected by the Trustee pursuant to this Article
shall be applied in the following order, at the date or dates fixed by the
Trustee and, in case of the distribution of such money on account of principal
(or premium, if any) or interest, upon presentation of the Notes and the
notation thereon of the payment if only partially paid and upon surrender
thereof if fully paid:

                  FIRST:   To the payment of all amounts due the Trustee under
         Section 606;

                  SECOND:  To the payment of the amounts then due and unpaid for
         principal of (and premium, if any) and interest on the Notes in respect
         of which or for the benefit of which such money has been collected,
         ratably, without preference or priority of any kind, according to the
         amounts due and payable on such Notes for principal (and premium, if
         any) and interest, respectively; and


                                       41
<PAGE>   48

                  THIRD:   The balance, if any, to the Person or Persons
         entitled thereto.

SECTION 507.  Limitation on Suits.

                  Except to enforce the right to receive payment of principal or
premium, if any, or interest when due, no Holder of any Notes shall have any
right to institute any proceeding, judicial or otherwise, with respect to this
Indenture, or for the appointment of a receiver or trustee, or for any other
remedy hereunder, unless the following conditions have been met:

                  (1)      such Holder has previously given written notice to
         the Trustee of a continuing Event of Default;

                  (2)      the Holders of not less than 25% in aggregate
         principal amount of the Outstanding Notes shall have made written
         request to the Trustee to pursue the remedy in respect of such Event of
         Default in its own name as trustee hereunder;

                  (3)      such Holder or Holders have offered to the Trustee
         indemnity satisfactory to the Trustee against any costs, expenses and
         liabilities to be incurred in compliance with such request;

                  (4)      the Trustee has failed to institute any such
         proceeding for 60 days after its receipt of such notice, request and
         offer of indemnity; and

                  (5)      during such 60-day period, no direction inconsistent
         with such written request has been given to the Trustee by the Holders
         of a majority or more in aggregate principal amount of the Outstanding
         Notes;

it being understood and intended that no one or more Holders shall have any
right in any manner whatever by virtue of, or by availing of, any provision of
this Indenture to affect, disturb or prejudice the rights of any other Holders,
or to obtain or to seek to obtain priority or preference over any other Holders
or to enforce any right under this Indenture, except in the manner herein
provided and for the equal and ratable benefit of all the Holders.

SECTION 508. Unconditional Right of Holders to Receive Principal, Premium and
Interest.

                  Notwithstanding any other provision in this Indenture, the
Holder of any Note shall have the right, which is absolute and unconditional, to
receive payment, as provided herein (including, if applicable, Article Thirteen)
and in such Note of the principal of (and premium, if any) and (subject to
Section 307) interest on such Note on the respective Stated Maturities expressed
in such Note (or, in the case of redemption, on the Redemption Date) and to
institute suit for the enforcement of any such payment on or after such Stated
Maturities, and such rights shall not be impaired without the consent of such
Holder.


                                       42
<PAGE>   49
SECTION 509.  Restoration of Rights and Remedies.

                  If the Trustee or any Holder has instituted any proceeding to
enforce any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, the Trustee and the Holders shall
be restored severally and respectively to their former positions hereunder and
thereafter all rights and remedies of the Trustee and the Holders shall continue
as though no such proceeding had been instituted.

SECTION 510.  Rights and Remedies Cumulative.

                  Except as otherwise provided with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Notes in the last paragraph
of Section 306, no right or remedy herein conferred upon or reserved to the
Trustee or to the Holders is intended to be exclusive of any other right or
remedy, and every right and remedy shall, to the extent permitted by law, be
cumulative and in addition to every other right and remedy given hereunder or
now or hereafter existing at law or in equity or otherwise. The assertion or
employment of any right or remedy hereunder, or otherwise, shall not prevent the
concurrent assertion or employment of any other appropriate right or remedy.

SECTION 511.  Delay or Omission Not Waiver.

                  No delay or omission of the Trustee or of any Holder of any
Note to exercise any right or remedy accruing upon any Event of Default shall
impair any such right or remedy or constitute a waiver of any such Event of
Default or an acquiescence therein. Every right and remedy given by this Article
or by law to the Trustee or to the Holders may be exercised from time to time,
and as often as may be deemed expedient, by the Trustee or by the Holders, as
the case may be.

SECTION 512.  Control by Holders.

                  The Holders of not less than a majority in aggregate principal
amount of the Outstanding Notes shall have the right to direct the time, method
and place of conducting any proceeding for any remedy available to the Trustee,
or exercising any trust or power conferred on the Trustee, provided that

                  (1)      the Trustee need not take any action that conflicts
         with law or this Indenture, which might involve the Trustee in personal
         liability or which, in the good faith determination of the Trustee, may
         be unduly prejudicial to rights Holders not joining in the giving of
         such direction, and

                  (2)      the Trustee may take any other action deemed proper
         by the Trustee which is not inconsistent with such direction.


                                       43
<PAGE>   50
SECTION 513.  Waiver of Past Defaults.

                  The Holders of not less than a majority in aggregate principal
amount of the Outstanding Notes may on behalf of the Holders of all the Notes
waive any past default hereunder and its consequences, except a default

                  (1)      in respect of the payment of the principal of (or
         premium, if any) or interest on any Note, or

                  (2)      in respect of a covenant or provision hereof which
         under Article Nine cannot be modified or amended without the consent of
         the Holder of each Outstanding Note affected.

                  Upon any such waiver, such default shall cease to exist, and
any Event of Default arising therefrom shall be deemed to have been cured, for
every purpose of this Indenture; but no such waiver shall extend to any
subsequent or other default or Event of Default or impair any right consequent
thereon.

SECTION 514.  Waiver of Stay or Extension Laws.

                  The Company covenants (to the extent that it may lawfully do
so) that it shall not at any time insist upon, or plead, or in any manner
whatsoever claim or take the benefit or advantage of, any stay or extension law
wherever enacted, now or at any time hereafter in force, which may affect the
covenants or the performance of this Indenture; and the Company (to the extent
that it may lawfully do so) hereby expressly waives all benefit or advantage of
any such law and covenants that it shall not hinder, delay or impede the
execution of any power herein granted to the Trustee, but shall suffer and
permit the execution of every such power as though no such law had been enacted.


                                   ARTICLE SIX

                                   THE TRUSTEE

SECTION 601.  Notice of Defaults.

                  Within 90 days after the occurrence of any Default hereunder,
the Trustee shall transmit in the manner and to the extent provided in TIA
Section 313(c), notice of such Default hereunder of the Trustee, unless such
Default shall have been cured or waived; provided, however, that, except in the
case of a Default in the payment of the principal of (or premium, if any) or
interest on any Note, the Trustee shall be protected in withholding such notice
if and so long as the board of directors, the executive committee or a trust
committee of directors and/or Responsible Officers of the Trustee in good faith
determines that the withholding of such notice


                                       44
<PAGE>   51
is in the interest of the Holders; and provided further that in the case of any
Default of the character specified in Section 501(7), no such notice to Holders
shall be given until at least 30 days after the occurrence thereof.

                  In case an Event of Default has occurred and is continuing,
the Trustee shall exercise such of the rights and powers vested in it by this
Indenture, and use the same degree of care and skill in their exercise, as a
prudent person would exercise or use under the circumstances in the conduct of
his or her own affairs.

SECTION 602.  Certain Rights of Trustee.

                  Subject to the provisions of TIA Sections 315(a) through
315(d):

                  (1)      the Trustee may rely and shall be protected in acting
         or refraining from acting upon any resolution, certificate, statement,
         instrument, opinion, report, notice, request, direction, consent,
         order, bond, debenture, note, other evidence of indebtedness or other
         paper or document believed by it to be genuine and to have been signed
         or presented by the proper party or parties;

                  (2)      any request or direction of the Company mentioned
         herein shall be sufficiently evidenced by a Company Request or Company
         Order and any resolution of the Board of Directors may be sufficiently
         evidenced by a Board Resolution;

                  (3)      whenever in the administration of this Indenture the
         Trustee shall deem it desirable that a matter be proved or established
         prior to taking, suffering or omitting any action hereunder, the
         Trustee (unless other evidence be herein specifically prescribed) may,
         in the absence of bad faith on its part, may require and rely upon an
         Officer's Certificate;

                  (4)      the Trustee may consult with counsel and the written
         advice of such counsel or any Opinion of Counsel shall be full and
         complete authorization and protection in respect of any action taken,
         suffered or omitted by it hereunder in good faith and in reliance
         thereon;

                  (5)      the Trustee shall be under no obligation to exercise
         any of the rights or powers vested in it by this Indenture at the
         request or direction of any of the Holders pursuant to this Indenture,
         unless such Holders shall have offered to the Trustee reasonable
         security or indemnity against the costs, expenses and liabilities which
         might be incurred by it in compliance with such request or direction;

                  (6)      the Trustee shall not be bound to make any
         investigation into the facts or matters stated in any resolution,
         certificate, statement, instrument, opinion, report, notice, request,
         direction, consent, order, bond, debenture, note, other evidence of
         indebtedness or other paper or document, but the Trustee, in its
         discretion, may make such further inquiry or investigation into such
         facts or matters as it may see fit, and, if the Trustee shall determine
         to make such further


                                       45
<PAGE>   52

         inquiry or investigation, it shall be entitled to examine the books,
         records and premises of the Company, personally or by agent or
         attorney;

                  (7)      the Trustee may execute any of the trusts or powers
         hereunder or perform any duties hereunder either directly or by or
         through agents or attorneys and the Trustee shall not be responsible
         for any misconduct or negligence on the part of any agent or attorney
         appointed with due care by it hereunder;

                  (8)      the Trustee shall not be liable for any action taken,
         suffered or omitted by it in good faith and believed by it to be
         authorized or within the discretion or rights or powers conferred upon
         it by this Indenture;

                  (9)      any permissive right or power available to the
         Trustee under this Indenture or any supplement hereto shall not be
         construed to be a mandatory duty or obligation;

                  (10)     the Trustee shall not be charged with knowledge of
         any matter (including any default, other than as described in Section
         501(1), (2) or (3)) unless and except to the extent actually known to a
         Responsible Officer of the Trustee or to the extent written notice
         thereof is received by the Trustee at the Corporate Trust Office; and

                  (11)     the Trustee shall have no liability for any
         inaccuracy in the books or records of, or for any actions or omissions
         of the Depositary.

                  The Trustee shall not be required to expend or risk its own
funds or otherwise incur any financial liability in the performance of any of
its duties hereunder, or in the exercise of any of its rights or powers if it
shall have reasonable grounds for believing that repayment of such funds or
adequate indemnity against such risk or liability is not reasonably assured to
it.

                  The Trustee shall not be required to examine any of the
reports and documents filed with it pursuant to Sections 703 or 1009 to
determine whether or not the Company is in compliance with the covenants set
forth at Sections 1010 through 1021.

SECTION 603.  Trustee Not Responsible for Recitals or Issuance of Notes.

                  The recitals contained in this Indenture and in the Notes,
except for the Trustees certificates of authentication, shall be taken as the
statements of the Company, and the Trustee assumes no responsibility for their
correctness. The Trustee makes no representations as to the validity or
sufficiency of this Indenture or of the Notes, except that the Trustee
represents that it is duly authorized to execute and deliver this Indenture,
authenticate the Notes and perform its obligations hereunder and that the
statements made by it in a Statement of Eligibility on Form T-1 supplied to the
Company are true and accurate, subject to the qualifications set forth therein.


                                       46
<PAGE>   53

The Trustee shall not be accountable for the use or application by the Company
of Notes or the proceeds thereof.

SECTION 604.  May Hold Notes.

                  The Trustee, any Paying Agent, any Registrar or any other
agent of the Company or of the Trustee, in its individual or any other capacity,
may become the owner or pledgee of Notes and, subject to TIA Sections 310(b) and
311, may otherwise deal with the Company with the same rights it would have if
it were not Trustee, Paying Agent, Registrar or such other agent.

SECTION 605.  Money Held in Trust.

                  Money held by the Trustee in trust hereunder shall be
segregated from other funds. The Trustee shall be under no liability for
interest on any money received by it hereunder.

SECTION 606.  Compensation and Reimbursement.

                  The Company agrees:

                  (1)      to pay to the Trustee from time to time reasonable
         compensation for all services rendered by it hereunder and under the
         Pledge Agreement (which compensation shall not be limited by any
         provision of law in regard to the compensation of a trustee of an
         express trust);

                  (2)      except as otherwise expressly provided herein, to
         reimburse the Trustee upon its request for all reasonable expenses,
         disbursements and advances incurred or made by the Trustee in
         accordance with any provision of this Indenture and under the Pledge
         Agreement (including the reasonable compensation and the expenses and
         disbursements of its agents and counsel), except any such expense,
         disbursement or advance as may be attributable to its negligence or bad
         faith; and

                  (3)      to indemnify the Trustee for, and to hold it harmless
         against, any loss, liability or expense incurred without gross
         negligence or bad faith on its part, arising out of or in connection
         with the acceptance and administration of its duties under the Pledge
         Agreement or the acceptance or administration of this trust, including
         the costs and expenses of defending itself against any claim or
         liability in connection with the exercise or performance of any of its
         powers or duties hereunder.

                  The obligations of the Company under this Section to
compensate the Trustee, to pay or reimburse the Trustee for expenses,
disbursements and advances and to indemnify and hold harmless the Trustee shall
constitute additional indebtedness hereunder and shall survive the satisfaction
and discharge of this Indenture. As security for the performance of such
obligations of the Company, the Trustee shall have a claim prior to the Notes
upon all property and funds


                                       47
<PAGE>   54
held or collected by the Trustee as such, except funds held in trust for the
payment of principal of (and premium, if any) or interest on particular Notes.

                  When the Trustee incurs expenses or renders services in
connection with an Event of Default specified in Section 501(8) or (9), the
expenses (including the reasonable charges and expenses of its counsel) of and
the compensation for such services are intended to constitute expenses of
administration under any applicable federal or state bankruptcy, insolvency or
other similar law; provided, however, that if any such amounts are not paid as
expenses of administration, they may be collected by the Trustee as amounts
payable to it pursuant to Section 506.

                  The provisions of this Section 606 shall survive the
termination of this Indenture.

SECTION 607.  Corporate Trustee Required; Eligibility.

                  There shall be at all times a Trustee hereunder which shall be
eligible to act as Trustee under TIA Section 310(a)(1) and shall have a combined
capital and surplus of at least $50 million. If such corporation publishes
reports of condition at least annually, pursuant to law or to the requirements
of federal, state, territorial or District of Columbia supervising or examining
authority, then for the purposes of this Section, the combined capital and
surplus of such corporation shall be deemed to be its combined capital and
surplus as set forth in its most recent report of condition so published. If at
any time the Trustee shall cease to be eligible in accordance with the
provisions of this Section 607, it shall resign immediately in the manner and
with the effect hereinafter specified in this Article.

SECTION 608.  Resignation and Removal; Appointment of Successor.

                  (a) No resignation or removal of the Trustee and no
appointment of a successor Trustee pursuant to this Article shall become
effective until the acceptance of appointment by the successor Trustee in
accordance with the applicable requirements of Section 609.

                  (b) The Trustee may resign at any time by giving written
notice thereof to the Company. If the instrument of acceptance by a successor
Trustee required by Section 609 shall not have been delivered to the Trustee
within 30 days after the giving of such notice of resignation, the resigning
Trustee may petition any court of competent jurisdiction for the appointment of
a successor Trustee.

                  (c) The Trustee may be removed at any time by Act of the
Holders of not less than a majority in aggregate principal amount of the
Outstanding Notes, delivered to the Trustee and to the Company.

                  (d) If at any time:


                                       48
<PAGE>   55
                           (1)      the Trustee shall fail to comply with the
                  provisions of TIA Section 310(b) after written request
                  therefor by the Company or by any Holder who has been a bona
                  fide Holder of a Note for at least six months, or

                           (2)      the Trustee shall cease to be eligible under
                  Section 607 and shall fail to resign after written request
                  therefor by the Company or by any Holder who has been a bona
                  fide Holder of a Note for at least six months, or

                           (3)      the Trustee shall become incapable of acting
                  or shall be adjudged a bankrupt or insolvent or a receiver of
                  the Trustee or of its property shall be appointed or any
                  public officer shall take charge or control of the Trustee or
                  of its property or affairs for the purpose of rehabilitation,
                  conservation or liquidation,

then, in any such case, (i) the Company, by a Board Resolution, may remove the
Trustee, or (ii) subject to TIA Section 315(e), any Holder who has been a bona
fide Holder of a Note for at least six months may, on behalf of himself and all
others similarly situated, petition any court of competent jurisdiction for the
removal of the Trustee and the appointment of a successor Trustee.

                  (e) If the Trustee shall resign, be removed or become
incapable of acting, or if a vacancy shall occur in the office of Trustee for
any cause, the Company, by a Board Resolution, shall promptly appoint a
successor Trustee. If, within one year after such resignation, removal or
incapability, or the occurrence of such vacancy, a successor Trustee shall be
appointed by Act of the Holders of a majority in aggregate principal amount of
the Outstanding Notes delivered to the Company and the retiring Trustee, the
successor Trustee so appointed shall, forthwith upon its acceptance of such
appointment, become the successor Trustee and supersede the successor Trustee
appointed by the Company. If no successor Trustee shall have been so appointed
by the Company or the Holders and accepted appointment in the manner hereinafter
provided, any Holder who has been a bona fide Holder of a Note for at least six
months may, on behalf of himself and all others similarly situated, petition any
court of competent jurisdiction for the appointment of a successor Trustee.

                  (f) The Company shall give notice of each resignation and each
removal of the Trustee and each appointment of a successor Trustee to the
Holders in the manner provided for in Section 106. Each notice shall include the
name of the successor Trustee and the address of its Corporate Trust Office.

SECTION 609.  Acceptance of Appointment by Successor.

                  Every successor Trustee appointed hereunder shall execute,
acknowledge and deliver to the Company and to the retiring Trustee an instrument
accepting such appointment, and thereupon the resignation or removal of the
retiring Trustee shall become effective and such successor Trustee, without any
further act, deed or conveyance, shall become vested with all the rights,
powers, trusts and duties of the retiring Trustee; but, on request of the
Company or the successor Trustee, such retiring Trustee shall, upon payment of
its charges, execute and deliver


                                       49
<PAGE>   56
an instrument transferring to such successor Trustee all the rights, powers and
trusts of the retiring Trustee and shall duly assign, transfer and deliver to
such successor Trustee all property and money held by such retiring Trustee
hereunder. Upon request of any such successor Trustee, the Company shall execute
any and all instruments for more fully and certainly vesting in and confirming
to such successor Trustee all such rights, powers and trusts.

                  No successor Trustee shall accept its appointment unless at
the time of such acceptance such successor Trustee shall be qualified and
eligible under this Article.

SECTION 610.  Merger, Conversion, Consolidation or Succession to Business.

                  Any corporation into which the Trustee may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which the Trustee shall be a
party, or any corporation succeeding to all or substantially all of the
corporate trust business of the Trustee, shall be the successor of the Trustee
hereunder (provided such corporation shall be otherwise qualified and eligible
under this Article), without the execution or filing of any paper or any further
act on the part of any of the parties hereto. In case any Notes shall have been
authenticated, but not delivered, by the Trustee then in office, any successor
by merger, conversion or consolidation to such authenticating Trustee may adopt
such authentication and deliver the Notes so authenticated with the same effect
as if such successor Trustee had itself authenticated such Notes. In case at
that time any of the Notes shall not have been authenticated, any successor
Trustee may authenticate such Notes either in the name of any predecessor
hereunder or in the name of the successor Trustee. In all such cases such
certificates shall have the full force and effect which this Indenture provides
for the certificate of authentication of the Trustee shall have; provided,
however, that the right to adopt the certificate of authentication of any
predecessor Trustee or to authenticate Notes in the name of any predecessor
Trustee shall apply only to its successor or successors by merger, conversion or
consolidation.

                                  ARTICLE SEVEN

                          HOLDERS LISTS AND REPORTS BY
                               TRUSTEE AND COMPANY

SECTION 701.  Disclosure of Names and Addresses of Holders.

                  Every Holder of Notes, by receiving and holding the same,
agrees with the Company and the Trustee that none of the Company or the Trustee
or any agent of either of them shall be held accountable by reason of the
disclosure of any such information as to the names and addresses of the Holders
in accordance with TIA Section 312, regardless of the source from which such
information was derived, and that the Trustee shall not be held accountable by
reason of mailing any material pursuant to a request made under TIA Section
312(b).


                                       50
<PAGE>   57
SECTION 702.  Reports by Trustee.

                  Within 60 days after February 15 of each year commencing with
the first February 15 after the first issuance of Notes, the Trustee shall
transmit to the Holders, in the manner and to the extent provided in TIA Section
313(c), a brief report dated as of such February 15 if required by TIA Section
313(a).

SECTION 703.  Reports by Company.

                  The Company shall:

                  (1)      file with the Trustee, within 15 days after the
         Company is required to file the same with the Commission, copies of the
         annual reports and of the information, documents and other reports (or
         copies of such portions of any of the foregoing as the Commission may
         from time to time by rules and regulations prescribe) which the Company
         may be required to file with the Commission pursuant to Section 13 or
         Section 15(d) of the Exchange Act; or, if the Company is not required
         to file information, documents or reports pursuant to either of said
         Sections, then it shall file with the Trustee and the Commission, in
         accordance with rules and regulations prescribed from time to time by
         the Commission, such of the supplementary and periodic information,
         documents and reports which may be required pursuant to Section 13 of
         the Exchange Act in respect of a security listed and registered on a
         national securities exchange as may be prescribed from time to time in
         such rules and regulations;

                  (2)      file with the Trustee and the Commission, in
         accordance with rules and regulations prescribed from time to time by
         the Commission, such additional information, documents and reports with
         respect to compliance by the Company with the conditions and covenants
         of this Indenture as may be required from time to time by such rules
         and regulations; and

                  (3)      transmit by mail to all Holders, in the manner and to
         the extent provided in TIA Section 313(c), within 30 days after the
         filing thereof with the Trustee, such summaries of any information,
         documents and reports required to be filed by the Company pursuant to
         paragraphs (1) and (2) of this Section as may be required by rules and
         regulations prescribed from time to time by the Commission.


                                  ARTICLE EIGHT

                       CONSOLIDATION, MERGER, CONVEYANCE,
                                TRANSFER OR LEASE

SECTION 801.  Company May Consolidate, Etc., Only on Certain Terms.

                                       51
<PAGE>   58

                  The Company shall not consolidate with, or merge with or into,
or sell, convey, transfer, lease or otherwise dispose of all or substantially
all of its property and assets (as an entirety or substantially as an entirety
in one transaction or a series of related transactions) to, any Person or permit
any Person to merge with or into the Company and the Company shall not permit
any of its Restricted Subsidiaries to enter into any such transaction or series
of transactions if such transaction or series of transactions, in the aggregate,
would result in the sale, assignment, conveyance, transfer, lease or other
disposition of all or substantially all of the properties and assets of the
Company or the Company and its Restricted Subsidiaries, taken as a whole, to any
other Person or Persons, unless:

                  (1)      either (A) the Company shall be the continuing
         Person, (B) the Person (if other than the Company) formed by such
         consolidation or into which the Company is merged or that acquired or
         leased such property and assets of the Company (i) shall be a
         corporation organized and validly existing under the laws of the United
         States of America or any jurisdiction thereof and (ii) shall expressly
         assume, by an indenture supplemental hereto, duly executed and
         delivered to the Trustee, all of the obligations of the Company with
         respect to all the Notes and under this Indenture or (C) in the case of
         any such transaction or series of transactions entered into by any
         Restricted Subsidiary, the Person into which the Restricted Subsidiary
         is merged is another Restricted Subsidiary;

                  (2)      immediately after giving effect to such transaction
         on a pro forma basis, no Default or Event of Default shall have
         occurred and be continuing;

                  (3)      immediately after giving effect to such transaction
         on a pro forma basis, the Company, or any Person becoming the successor
         obligor of the Notes, shall have a Consolidated Net Worth equal to or
         greater than the Consolidated Net Worth of the Company immediately
         prior to such transaction;

                  (4)      immediately after giving effect to such transaction
         on a pro forma basis, the Company, or any Person becoming the successor
         obligor of the Notes, as the case may be, could Incur at least $1.00 of
         Indebtedness under paragraph (a) of Section 1011; and

                  (5)      the Company delivers to the Trustee an Officer's
         Certificate (attaching the arithmetic computations to demonstrate
         compliance with clauses (3) and (4) above) and an Opinion of Counsel,
         each stating that such consolidation, merger or transfer and such
         supplemental indenture complies with this Article and that all
         conditions precedent herein provided for relating to such transaction
         have been complied with;

provided, however, that clauses (3) and (4) above shall not apply if, in the
good faith determination of the Board of Directors of the Company, whose
determination shall be evidenced by a Board Resolution, the principal purpose of
such transaction is to change the state of incorporation of the Company; and
provided further that any such transaction shall not have as one of its purposes
the evasion of the foregoing limitations.


                                       52
<PAGE>   59
SECTION 802.  Successor Substituted.

                  Upon any consolidation of the Company with or merger of the
Company with or into any other Person or any conveyance, transfer or lease of
the properties and assets of the Company substantially as an entirety to any
Person in accordance with Section 801, the successor Person formed by such
consolidation or into which the Company is merged or to which such conveyance,
transfer or lease is made shall succeed to, and be substituted for, and may
exercise every right and power of, the Company under this Indenture with the
same effect as if such successor Person had been named as the Company herein,
and in the event of any such conveyance or transfer, the Company (which term
shall for this purpose mean the Person named as the "Company" in the first
paragraph of this Indenture or any successor Person which shall theretofore
become such in the manner described in Section 801), except in the case of a
lease, shall be discharged of all obligations and covenants under this Indenture
and the Notes and may be dissolved and liquidated.

SECTION 803.  Notes to Be Secured in Certain Events.

                  If, upon any such consolidation of the Company with, or merger
of the Company into, any other corporation, or upon any conveyance, lease or
transfer of the property of the Company substantially as an entirety to any
other Person, any property or assets of the Company would thereupon become
subject to any Lien, then unless such Lien could be created pursuant to Section
1016 without equally and ratably securing the Notes, the Company, prior to or
simultaneously with such consolidation, merger, conveyance, lease or transfer,
will, as to such property or assets, secure the Notes Outstanding (together
with, if the Company shall so determine any other Indebtedness of the Company
now existing or hereinafter created which is not subordinate in right of payment
to the Notes) equally and ratably with (or prior to) the Indebtedness which upon
such consolidation, merger, conveyance, lease or transfer is to become secured
as to such property or assets by such Lien, or shall cause such Notes to be so
secured.


                                  ARTICLE NINE

                             SUPPLEMENTAL INDENTURES

SECTION 901.  Supplemental Indentures Without Consent of Holders.

                  Without the consent of any Holders, the Company, when
authorized by a Board Resolution, and the Trustee, at any time and from time to
time, may enter into one or more indentures supplemental hereto, in form
satisfactory to the Trustee, for any of the following purposes:

                  (1)      to evidence the succession of another Person to the
         Company and the assumption by any such successor of the covenants of
         the Company contained herein and in the Notes; or


                                       53
<PAGE>   60
                  (2)      to add to the covenants of the Company for the
         benefit of the Holders or to surrender any right or power herein
         conferred upon the Company; or

                  (3)      to add any additional Events of Default; or

                  (4)      to evidence and provide for the acceptance of
         appointment hereunder by a successor Trustee pursuant to the
         requirements of Section 609; or

                  (5)      to cure any ambiguity, to correct or supplement any
         provision herein which may be inconsistent with any other provision
         herein, or to make any other provisions with respect to matters or
         questions arising under this Indenture; provided that such action shall
         not adversely affect the interests of the Holders in any material
         respect; or

                  (6)      to secure the Notes pursuant to the requirements of
         Section 803 or Section 1016 or otherwise.

SECTION 902.  Supplemental Indentures with Consent of Holders.

                  With the consent of the Holders of not less than a majority in
aggregate principal amount of the Outstanding Notes, by Act of said Holders
delivered to the Company and the Trustee, the Company, when authorized by a
Board Resolution, and the Trustee may enter into an indenture or indentures
supplemental hereto for the purpose of adding any provisions to or changing in
any manner or eliminating any of the provisions of this Indenture or of
modifying in any manner the rights of the Holders under this Indenture;
provided, however, that no such supplemental indenture shall, without the
consent of the Holder of each Outstanding Note affected thereby:

                  (i)      change the Stated Maturity of the principal of, or
         any installment of interest on, any Note;

                  (ii)     reduce the principal amount of, or premium, if any,
         or interest on any Note or extend the time for payment of interest on,
         or alter the redemption provisions of, any Note;

                  (iii)    change the place or currency of payment of principal
         of, or premium, if any, or interest on any Note;

                  (iv)     impair the right of any Holder to receive payment of,
         principal of and interest on such Holder's Notes on or after the due
         dates therefor or to institute suit for the enforcement of any payment
         on or after the Stated Maturity (or, in the case of a redemption, on or
         after the Redemption Date) of any Note;


                                       54
<PAGE>   61

                  (v)      reduce the percentage of Outstanding Notes the
         consent of whose Holders is necessary to modify, amend, waive,
         supplement or consent to take any action under this Indenture or the
         Notes;

                  (vi)     waive a default in the payment of principal of,
         premium, if any, or accrued and unpaid interest on the Notes;

                  (vii)    reduce or change the rate or time for payment of
         interest on the Notes;

                  (viii)   [Reserved]

                  (ix)     modify any provisions of any Guarantees in a manner
         adverse to the Holders; or

                  (x)      modify any provisions of this Section 902 or Sections
         513 and 1022, except to increase any such percentage or to provide that
         certain other provisions of this Indenture cannot be modified or waived
         without the consent of the Holder of each Outstanding Note affected
         thereby.

                  It shall not be necessary for any Act of Holders under this
Section to approve the particular form of any proposed supplemental indenture,
but it shall be sufficient if such Act shall approve the substance thereof.

SECTION 903.  Execution of Supplemental Indentures.

                  In executing, or accepting the additional trusts created by,
any supplemental indenture permitted by this Article or the modifications
thereby of the trusts created by this Indenture, the Trustee shall be entitled
to receive, and shall be fully protected in relying upon, an Opinion of Counsel
stating that the execution of such supplemental indenture is authorized or
permitted by this Indenture. The Trustee may, but shall not be obligated to,
enter into any such supplemental indenture which affects the Trustees own
rights, duties or immunities under this Indenture or otherwise.

SECTION 904.  Effect of Supplemental Indentures.

                  Upon the execution of any supplemental indenture under this
Article, this Indenture shall be modified in accordance therewith, and such
supplemental indenture shall form a part of this Indenture for all purposes; and
every Holder of Notes theretofore or thereafter authenticated and delivered
hereunder shall be bound thereby.

SECTION 905.  Conformity with Trust Indenture Act.

                  Every supplemental indenture executed pursuant to the Article
shall conform to the requirements of the Trust Indenture Act as then in effect.


                                       55
<PAGE>   62

SECTION 906.  Reference in Notes to Supplemental Indentures.

                  Notes authenticated and delivered after the execution of any
supplemental indenture pursuant to this Article may, and shall if required by
the Trustee, bear a notation in form approved by the Trustee as to any matter
provided for in such supplemental indenture. If the Company shall so determine,
new Notes so modified as to conform, in the opinion of the Trustee and the
Company, to any such supplemental indenture may be prepared and executed by the
Company and upon Company Order authenticated and delivered by the Trustee in
exchange for Outstanding Notes.

SECTION 907.  Notice of Supplemental Indentures.

         Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to the provisions of Section 902, the Company
shall give notice thereof to the Holders of each Outstanding Note affected
thereby, in the manner provided for in Section 106, setting forth in general
terms the substance of such supplemental indenture.

                                   ARTICLE TEN

                                    COVENANTS

SECTION 1001.  Payment of Principal, Premium, if Any, and Interest.

                  The Company covenants and agrees for the benefit of the
Holders that it shall duly and punctually pay the principal of (and premium, if
any) and interest on the Notes in accordance with the terms of the Notes and
this Indenture.

SECTION 1002.  Maintenance of Office or Agency.

                  The Company shall maintain in The City of New York, an office
or agency where Notes may be surrendered for registration of transfer or
exchange and where notices and demands to or upon the Company in respect of the
Notes and this Indenture may be served. The office of the Trustee located at 40
Broad Street, Suite 550, New York, New York 10004 shall be such office or agency
of the Company, unless the Company shall designate and maintain some other
office or agency for one or more of such purposes. In addition, the Company
shall maintain an office or agency where the Notes may be presented or
surrendered for payment (which shall be the Corporate Trust Office of the
Trustee, unless the Company shall designate and maintain some other office or
agency for one or more such purposes). The Company shall give prompt written
notice to the Trustee of any change in the location of any such office or
agency. If at any time the Company shall fail to maintain any such required
office or agency or shall fail to furnish the Trustee with the address thereof,
such presentations, surrenders, notices and demands may be made or served at the
Corporate Trust Office of the Trustee, and the Company hereby appoints the
Trustee as its agent to receive all such presentations, surrenders, notices and
demands.


                                       56
<PAGE>   63

                  The Company may also from time to time designate one or more
other offices or agencies where the Notes may be presented or surrendered for
any or all such purposes and may from time to time rescind any such designation;
provided, however, that no such designation or rescission shall in any manner
relieve the Company of its obligation to maintain an office or agency in The
City of New York for such purposes. The Company shall give prompt written notice
to the Trustee of any such designation or rescission and any change in the
location of any such other office or agency.

SECTION 1003.  Money for Note Payments to Be Held in Trust.

                  If the Company shall at any time act as its own Paying Agent,
it shall, on or before each due date of the principal of (or premium, if any) or
interest on any of the Notes, segregate and hold in trust for the benefit of the
Persons entitled thereto a sum sufficient to pay the principal of (or premium,
if any) or interest so becoming due until such sums shall be paid to such
Persons or otherwise disposed of as herein provided and shall promptly notify
the Trustee of its action or failure so to act.

                  Whenever the Company shall have one or more Paying Agents for
the Notes, it shall, on or before each due date of the principal of (or premium,
if any) or interest on any Notes, deposit with a Paying Agent a sum sufficient
to pay the principal (and premium, if any) or interest so becoming due, such sum
to be held in trust for the benefit of the Persons entitled to such principal,
premium or interest, and (unless such Paying Agent is the Trustee) the Company
shall promptly notify the Trustee of such action or any failure so to act.

                  The Company shall cause each Paying Agent (other than the
Trustee) to execute and deliver to the Trustee an instrument in which such
Paying Agent shall agree with the Trustee, subject to the provisions of this
Section 1003, that such Paying Agent shall:

                  (1)      hold all sums held by it for the payment of the
         principal of (and premium, if any) or interest on Notes in trust for
         the benefit of the Persons entitled thereto until such sums shall be
         paid to such Persons or otherwise disposed of as herein provided;

                  (2)      give the Trustee notice of any default by the Company
         (or any other obligor upon the Notes) in the making of any payment of
         principal (and premium, if any) or interest on the Notes; and

                  (3)      at any time during the continuance of any such
         default, upon the written request of the Trustee, forthwith pay to the
         Trustee all sums so held in trust by such Paying Agent.

                  The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held in
trust by the Company or such Paying Agent, such sums to be held by the Trustee
upon the same terms as those upon which such sums were


                                       57
<PAGE>   64
held by the Company or such Paying Agent; and, upon such payment by any Paying
Agent to the Trustee, such Paying Agent shall be released from all further
liability with respect to such sums.

                  Any money deposited with the Trustee or any Paying Agent, or
then held by the Company, in trust for the payment of the principal of (or
premium, if any) or interest on any Note and remaining unclaimed for two years
after such principal, premium or interest has become due and payable shall be
paid to the Company on Company Request, or (if then held by the Company) shall
be discharged from such trust; and the Holder shall thereafter, as an unsecured
general creditor, look only to the Company for payment thereof, and all
liability of the Trustee or such Paying Agent with respect to such trust money,
and all liability of the Company as trustee thereof, shall thereupon cease;
provided, however, that the Trustee or such Paying Agent, before being required
to make any such repayment, may at the expense of the Company cause to be
published once, in a newspaper published in the English language, customarily
published on each Business Day and of general circulation in the Borough of
Manhattan, The City of New York, notice that such money remains unclaimed and
that, after a date specified therein, which shall not be less than 30 days from
the date of such publication, any unclaimed balance of such money then remaining
shall be repaid to the Company.

SECTION 1004.  Corporate Existence.

                  Subject to Article Eight, the Company shall do or cause to be
done all things necessary to preserve and keep in full force and effect the
corporate existence (or in the case of its Subsidiaries, existence under the
applicable statutes for non-corporate business entities such as partnerships and
limited liability companies), rights (charter and statutory) and franchises of
the Company and each Subsidiary; provided, however, that the Company shall not
be required to preserve any such right or franchise if the Board of Directors
shall determine that the preservation thereof is no longer desirable in the
conduct of the business of the Company and its Subsidiaries as a whole and that
the loss thereof is not disadvantageous in any material respect to the Holders.

SECTION 1005.  Payment of Taxes and Other Claims.

                  The Company shall pay or discharge or cause to be paid or
discharged, before the same shall become delinquent, (a) all taxes, assessments
and governmental charges levied or imposed upon the Company or any Subsidiary or
upon the income, profits or property of the Company or any Subsidiary and (b)
all lawful claims for labor, materials and supplies, which, if unpaid, might by
law become a lien (other than a Permitted Lien) upon the property of the Company
or any Subsidiary; provided, however, that the Company shall not be required to
pay or discharge or cause to be paid or discharged any such tax, assessment,
charge or claim whose amount, applicability or validity is being contested in
good faith by appropriate proceedings.

SECTION 1006.  Maintenance of Properties.


                                       58
<PAGE>   65

                  The Company shall cause all properties owned by the Company or
any Subsidiary or used or held for use in the conduct of its business or the
business of any Subsidiary to be maintained and kept in good condition, repair
and working order and supplied with all necessary equipment and shall cause to
be made all necessary repairs, renewals, replacements, betterments and
improvements thereof, all as in the judgment of the Company may be necessary so
that the business carried on in connection therewith may be properly and
advantageously conducted at all times; provided, however, that nothing in this
Section shall prevent the Company from discontinuing the maintenance of any of
such properties if such discontinuance is, in the judgment of the Company,
desirable in the conduct of its business or the business of any Subsidiary and
not disadvantageous in any material respect to the Holders.

SECTION 1007.  Insurance.

                  The Company shall at all times keep all of its and its
Subsidiaries properties which are of an insurable nature insured with insurers,
believed by the Company to be responsible, against loss or damage to the extent
that property of similar character is usually so insured by corporations
similarly situated and owning like properties.

SECTION 1008.  Statement by Officers as to Default.

                  (a) The Company shall deliver to the Trustee, within 120 days
after the end of each fiscal year, an Officer's Certificate from the principal
executive officer, principal financial officer or principal accounting officer
to the effect that a review has been conducted of the activities of the Company
and the Company's performance under this Indenture, and that the Company has
fulfilled its obligations thereunder or, if there has been a default in the
fulfillment of any such obligation, specifying each such default and the nature
and status thereof. For purposes of this Section 1008(a), such compliance shall
be determined without regard to any period of grace or requirement of notice
under this Indenture.

                  (b) When any Default has occurred and is continuing under this
Indenture, or if the trustee for or the Holder of any other evidence of
Indebtedness of the Company or any Subsidiary gives any notice or takes any
other action with respect to a claimed default (other than with respect to
Indebtedness in the principal amount of less than $1,000,000) shall deliver to
the Trustee by registered or certified mail or by telegram, telex or facsimile
transmission an Officer's Certificate specifying such event, notice or other
action within five Business Days of its occurrence.

SECTION 1009.  Provision of Financial Statements and Reports.

                  (a) The Company shall file on a timely basis with the
Commission, to the extent such filings are accepted by the Commission and
whether or not the Company has a class of securities registered under the
Exchange Act, the annual reports, quarterly reports and other documents that the
Company would be required to file if it were subject to Section 13 or 15 of the
Exchange Act. All such annual reports shall include the geographic segment
financial


                                       59
<PAGE>   66

information contemplated by Item 101(d) of Regulation S-K under the
Securities Act, and all such quarterly reports shall provide the same type of
interim financial information that, as of the date of this Indenture, is the
Company's practice to provide.

                  (b) The Company shall also be required (i) to file with the
Trustee, and provide to each Holder, without cost to such Holder, copies of such
reports and documents within 15 days after the date on which the Company files
such reports and documents with the Commission or the date on which the Company
would be required to file such reports and documents if the Company were so
required and (ii) if filing such reports and documents with the Commission is
not accepted by the Commission or is prohibited under the Exchange Act, to
supply at the Company's cost copies of such reports and documents to any
prospective Holder promptly upon request.

SECTION 1010.  Repurchase of Notes upon Change of Control.

                  (a)      Upon the occurrence of a Change of Control, each
         Holder shall have the right to require the Company to repurchase such
         Holder's Notes in whole or in part (the "Change of Control Offer"), at
         a purchase price (the "Purchase Price") in cash in an amount equal to
         101% of the principal amount thereof, plus accrued and unpaid interest,
         to the date of purchase (subject to the right of Holders of record to
         receive interest on the relevant Interest Payment Date) (the "Change of
         Control Payment") in accordance with the procedures set forth in
         paragraphs (c) and (d) of this Section.

                  (b)      [Reserved]

                  (c)      Within 30 days following any Change of Control, the
         Company shall give to each Holder and the Trustee in the manner
         provided in Section 106 a notice stating:

                  (i)      that a Change of Control has occurred, that the
         Change of Control Offer is being made pursuant to this Section 1010 and
         that all Notes validly tendered will be accepted for payment;

                  (ii)     the circumstances and relevant facts regarding such
         Change of Control (including but not limited to information with
         respect to pro forma historical income, cash flow and capitalization
         after giving effect to such Change of Control);

                  (iii)    the Purchase Price and date of purchase (which shall
         be a Business Day no earlier than 30 days nor later than 60 days from
         the date such notice is mailed) (the "Change of Control Payment Date");

                  (iv)     that any Note not tendered will continue to accrue
         interest pursuant to its terms;


                                       60
<PAGE>   67

                  (v)      that, unless the Company defaults in the payment of
         the Change of Control Payment, any Note accepted for payment pursuant
         to the Change of Control Offer shall cease to accrue interest on and
         after the Change of Control Payment Date;

                  (vi)     that Holders electing to have any Note or portion
         thereof purchased pursuant to the Change of Control Offer will be
         required to surrender such Note, together with the form entitled
         "Option of the Holder to Elect Purchase" on the reverse side of such
         Note completed, to the Paying Agent at the address specified in the
         notice prior to the close of business on the Business Day immediately
         preceding the Change of Control Payment Date;

                  (vii)    that Holders shall be entitled to withdraw their
         election if the Paying Agent receives, not later than the close of
         business on the third Business Day immediately preceding the Change of
         Control Payment Date, a telegram, facsimile transmission or letter
         setting forth the name of such Holder, the principal amount of Notes
         delivered for purchase and a statement that such Holder is withdrawing
         his election to have such Notes purchased; and

                  (viii)   that Holders whose Notes are being purchased only in
         part will be issued new Notes equal in principal amount to the
         unpurchased portion of the Notes surrendered; provided that each Note
         purchased and each new Note issued shall be in a principal amount of
         $1,000 or integral multiples thereof.

                  (d)      [Reserved].

                  (e)      On the Change of Control Payment Date, the Company
         shall:

                  (i)      accept for payment Notes or portions thereof tendered
         pursuant to the Change of Control Offer;

                  (ii)     deposit with the Paying Agent money sufficient to pay
         the purchase price of all Notes or portions thereof so accepted; and

                  (iii)    deliver, or cause to be delivered, to the Trustee,
         all Notes or portions thereof so accepted together with an Officer's
         Certificate specifying the Notes or portions thereof accepted for
         payment by the Company. The Paying Agent shall promptly mail, to the
         Holders so accepted, payment in an amount equal to the purchase price,
         and the Trustee shall promptly authenticate and mail to such Holders a
         new Note equal in principal amount to any unpurchased portion of the
         Notes surrendered; provided that each Note purchased and each new Note
         issued shall be in a principal amount of $1,000 or integral multiples
         thereof. The Company shall publicly announce the results of the Change
         of Control Offer on or as soon as practicable after the Change of
         Control Payment Date. For purposes of this Section 1010, the Trustee
         shall act as Paying Agent.


                                       61
<PAGE>   68
                  The Company shall not be required to make a Change of Control
Offer upon a Change of Control if a third party makes a Change of Control Offer
in the manner, at the times and otherwise in compliance with the requirements
applicable to a Change of Control Offer made by the Company and purchases all
Notes validly tendered and not withdrawn under such Change of Control Offer.

                  The Company shall comply with Rule 14e-1 under the Exchange
Act and any other securities laws and regulations thereunder to the extent such
laws and regulations are applicable in the event that a Change of Control occurs
and the Company is required to repurchase the Notes under this Section 1010.

SECTION 1011.  Limitation on Indebtedness.

                  (a)      The Company shall not, and shall not permit any of
its Restricted Subsidiaries to, Incur any Indebtedness; provided, however, that
the Company may Incur Indebtedness if immediately thereafter the ratio of (i)
the aggregate principal amount (or accreted value, as the case may be) of
Indebtedness of the Company and its Restricted Subsidiaries on a consolidated
basis outstanding as of the Transaction Date to (ii) the Pro Forma Consolidated
Cash Flow for the preceding two full fiscal quarters multiplied by two,
determined on a pro forma basis as if any such Indebtedness had been Incurred
and the proceeds thereof had been applied at the beginning of such two fiscal
quarters, would be greater than zero and less than 5 to 1.

                  (b)      The foregoing limitations of paragraph (a) of this
covenant will not apply to any of the following Indebtedness ("Permitted
Indebtedness"), each of which shall be given independent effect:

                  (i)      Indebtedness of the Company evidenced by the Notes or
         the FaciliCom Notes;

                  (ii)     Indebtedness of the Company or any Restricted
         Subsidiary outstanding on the Exchange Date;

                  (iii)    Indebtedness of the Company or any Restricted
         Subsidiary under one or more Credit Facilities, in an aggregate
         principal amount at any one time outstanding not to exceed the greater
         of (x) $135.0 million and (y) 80% of Eligible Accounts Receivable at
         any one time outstanding, subject to any permanent reductions required
         by any other terms of this Indenture;

                  (iv)     Indebtedness of the Company or any Restricted
         Subsidiary Incurred to finance the cost (including the cost of design,
         development, construction, acquisition, installation or integration) of
         Telecommunications Assets;

                  (v)      Indebtedness of a Restricted Subsidiary owed to and
         held by the Company or another Restricted Subsidiary, except that (A)
         any transfer of such Indebtedness by the Company or a Restricted
         Subsidiary (other than to the Company or another Restricted Subsidiary)
         or (B) the sale, transfer or other disposition by the Company or any
         Restricted


                                       62
<PAGE>   69

         Subsidiary of Capital Stock of a Restricted Subsidiary which is owed
         Indebtedness of another Restricted Subsidiary shall, in each case, be
         an Incurrence of Indebtedness by such Restricted Subsidiary, subject to
         the other provisions of this Indenture;

                  (vi)     Indebtedness of the Company owed to and held by a
         Restricted Subsidiary which is unsecured and subordinated in right to
         the payment and performance to the obligations of the Company under
         this Indenture and the Notes, except that the limitations of paragraph
         (a) of this Section 1011 shall apply to such Indebtedness at such time
         as (A) any transfer of such Indebtedness by a Restricted Subsidiary
         (other than to another Restricted Subsidiary) and (B) the sale,
         transfer or other disposition by the Company or any Restricted
         Subsidiary of Capital Stock of a Restricted Subsidiary which is owed
         such Indebtedness, subject to other provisions of this Indenture;

                  (vii)    Indebtedness of the Company or a Restricted
         Subsidiary issued in exchange for, or the net proceeds of which are
         used to refinance (whether by amendment, renewal, extension or
         refunding), then outstanding Indebtedness of the Company or a
         Restricted Subsidiary, other than Indebtedness Incurred under clauses
         (iii), (v), (vi), (viii), (ix), (xi) and (xii) of this paragraph, and
         any refinancings thereof in an amount not to exceed the amount so
         refinanced or refunded (plus premiums, accrued interest, and reasonable
         fees and expenses); provided that such new Indebtedness shall only be
         permitted under this clause (vii) if: (A) in case the Notes are
         refinanced in part or the Indebtedness to be refinanced is pari passu
         with the Notes, such new Indebtedness, by its terms or by the terms of
         any agreement or instrument pursuant to which such new Indebtedness is
         issued or remains outstanding, is expressly made pari passu with, or
         subordinate in right of payment to, the remaining Notes, (B) in case
         the Indebtedness to be refinanced is subordinated in right of payment
         to the Notes, such new Indebtedness, by its terms or by the terms of
         any agreement or instrument pursuant to which such new Indebtedness is
         issued or remains outstanding, is expressly made subordinate in right
         of payment to the Notes at least to the extent that the Indebtedness to
         be refinanced is subordinated to the Notes and (C) such new
         Indebtedness, determined as of the date of Incurrence of such new
         Indebtedness, does not mature prior to the Stated Maturity of the
         Indebtedness to be refinanced or refunded, and the Average Life of such
         new Indebtedness is at least equal to the remaining Average Life of the
         Indebtedness to be refinanced or refunded; and provided further that in
         no event may Indebtedness of the Company be refinanced by means of any
         Indebtedness of any Restricted Subsidiary pursuant to this clause
         (vii);

                  (viii)   Indebtedness of (x) the Company not to exceed, at any
         one time outstanding, 2.00 times the Net Cash Proceeds from the
         issuance and sale, other than to a Subsidiary, of Common Stock (other
         than Redeemable Stock) of the Company (less the amount of such proceeds
         used to make Restricted Payments as provided in clause (iii) or (iv) of
         the second paragraph of Section 1012) and (y) the Company or Acquired
         Indebtedness of a Restricted Subsidiary not to exceed, at one time
         outstanding, the Fair


                                       63
<PAGE>   70

         Market Value of any Telecommunications Assets acquired by the Company
         in exchange for Common Stock of the Company issued after the Exchange
         Date; provided, however, that in determining the Fair Market Value of
         any such Telecommunications Assets so acquired, if the estimated Fair
         Market Value of such Telecommunications Assets exceeds (A) $2 million
         (as estimated in good faith by the Board of Directors), then the Fair
         Market Value of such Telecommunications Assets will be determined by a
         majority of the Board of Directors of the Company, which determination
         will be evidenced by a resolution thereof, and (B) $10 million (as
         estimated in good faith by the Board of Directors), then the Company
         shall deliver the Trustee a written appraisal as to the Fair Market
         Value of such Telecommunications Assets prepared by a nationally
         recognized investment banking or public accounting firm (or, if no such
         investment banking or public accounting firm is qualified to prepare
         such an appraisal, by a nationally recognized appraisal firm); and
         provided further that such Indebtedness does not mature prior to the
         Stated Maturity of the Notes and the Average Life of such Indebtedness
         is longer than that of the Notes;

                  (ix)     Indebtedness of the Company or any Restricted
         Subsidiary (A) in respect of performance, surety or appeal bonds or
         letters of credit supporting trade payables, in each case provided in
         the ordinary course of business, (B) under Currency Agreements and
         Interest Rate Agreements covering Indebtedness of the Company; provided
         that such agreements do not increase the Indebtedness of the obligor
         outstanding at any time other than as a result of fluctuations in
         foreign currency exchange rates or interest rates or by reason of fees,
         indemnities and compensation payable thereunder, and (C) arising from
         agreements providing for indemnification, adjustment of purchase price
         or similar obligations including, without limitation, the Company's
         indemnification obligations pursuant to that certain Indemnification
         Agreement dated August 19, 1999, by and between the Company and Clay C.
         Long, Esq., trustee of the World Access Charitable Trust, or from
         Guarantees or letters of credit, surety bonds or performance bonds
         securing any obligations of the Company or any of its Restricted
         Subsidiaries pursuant to such agreements, in any case Incurred in
         connection with the disposition of any business, assets or Restricted
         Subsidiary of the Company (other than Guarantees of Indebtedness
         Incurred by any Person acquiring all or any portion of such business,
         assets or Restricted Subsidiary for the purpose of financing such
         acquisition), in a principal amount not to exceed the gross proceeds
         actually received by the Company or any Restricted Subsidiary in
         connection with such disposition;

                  (x)      Indebtedness of the Company, to the extent that the
         net proceeds thereof are promptly (A) used to repurchase Notes tendered
         in a Change of Control Offer or (B) deposited to defease all of the
         Notes pursuant to Article Thirteen;

                  (xi)     Indebtedness of a Restricted Subsidiary represented
         by a Guarantee of the Notes permitted by and made in accordance with
         Section 1018;


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<PAGE>   71

                  (xii)    Indebtedness of the Company and its Subsidiaries
         existing upon the consummation of the Merger; and

                  (xiii)   Indebtedness of the Company or any Restricted
         Subsidiary in addition to that permitted to be incurred pursuant to
         clauses (i) through (xi) above in an aggregate principal amount not in
         excess of $10 million (or, to the extent not denominated in United
         States dollars, the United States Dollar Equivalent thereof) at any one
         time outstanding.

                  (c)      For purposes of determining any particular amount of
indebtedness under this Section 1011, Guarantees, Liens or obligations with
respect to letters of credit supporting Indebtedness otherwise included in the
determination of such particular amount shall not be included; provided,
however, that the foregoing shall not in any way be deemed to limit the
provisions of Section 1018. For purposes of determining compliance with this
Section 1011, in the event that an item of Indebtedness meets the criteria of
more than one of the types of Indebtedness described in the above clauses, the
Company, in its sole discretion may, at the time of such Incurrence, (i)
classify such item of Indebtedness under and comply with either of paragraph (a)
or (b) of this covenant (or any of such definitions), as applicable, (ii)
classify and divide such item of Indebtedness into more than one of such
paragraphs (or definitions), as applicable, and (iii) elect to comply with such
paragraphs (or definitions), as applicable in any order.

SECTION 1012.  Limitation on Restricted Payments.

                  The Company shall not, and shall not permit any Restricted
Subsidiary to, directly or indirectly, (i) (A) declare or pay any dividend or
make any distribution in respect of the Company's Capital Stock to the holders
thereof (other than dividends or distributions payable solely in shares of
Capital Stock (other than Redeemable Stock) of the Company or in options,
warrants or other rights to acquire such shares of Capital Stock) or (B) declare
or pay any dividend or make any distribution in respect of the Capital Stock of
any Restricted Subsidiary to any Person other than dividends and distributions,
including a distribution payable solely in shares of Capital Stock (other than
Redeemable Stock), payable to the Company or any Restricted Subsidiary or to all
holders of Capital Stock of such Restricted Subsidiary on a pro rata basis; (ii)
purchase, redeem, retire or otherwise acquire for value any shares of Capital
Stock of the Company (including options, warrants or other rights to acquire
such shares of Capital Stock) held by any Person or any shares of Capital Stock
of any Restricted Subsidiary (including options, warrants and other rights to
acquire such shares of Capital Stock) held by any Affiliate of the Company
(other than a Wholly Owned Restricted Subsidiary) or any holder (or any
Affiliate thereof) of 5% or more of the Company's Capital Stock; (iii) make any
voluntary or optional principal payment, or voluntary or optional redemption,
repurchase, defeasance, or other acquisition or retirement for value, of
Indebtedness of the Company that is subordinated in right of payment to the
Notes; or (iv) make any Investment, other than a Permitted Investment, in any
Person (such payments or any other actions described in clauses (i) through (iv)
being collectively "Restricted Payments") if, at the time of, and after giving
effect to, the proposed Restricted Payment:


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<PAGE>   72

                  (A)      a Default or Event of Default shall have occurred and
         be continuing;

                  (B)      the Company could not Incur at least $1.00 of
         Indebtedness under paragraph (a) of Section 1011; and

                  (C)      the aggregate amount of all Restricted Payments
         declared or made from and after the Exchange Date would exceed the sum
         of:

                           (1)      Cumulative Consolidated Cash Flow minus 200%
                  of Cumulative Consolidated Fixed Charges;

                           (2)      100% of the aggregate Net Cash Proceeds from
                  the issue or sale to a Person, which is not a Subsidiary of
                  the Company, of Capital Stock of the Company (other than
                  Redeemable Stock) or of debt securities of the Company which
                  have been converted into or exchanged for such Capital Stock
                  (except to the extent such Net Cash Proceeds are used to Incur
                  new Indebtedness outstanding pursuant to clause (viii) of
                  paragraph (b) of Section 1011); and

                           (3)      to the extent any Permitted Investment that
                  was made after the Exchange Date is sold for cash or otherwise
                  liquidated or repaid for cash, the lesser of (i) the cash
                  return of capital with respect to such Permitted Investment
                  (less the cost of disposition, if any) and (ii) the initial
                  amount of such Permitted Investment.

                  The foregoing provision shall not be violated by reason of:
(i) the payment of any dividend within 60 days after the date of declaration
thereof if, at said date of declaration, such payment would comply with the
foregoing paragraph; (ii) the redemption, repurchase, defeasance or other
acquisition or retirement for value of Indebtedness that is subordinated in
right of payment to the Notes including a premium, if any, and accrued and
unpaid interest with the net proceeds of, or in exchange for, Indebtedness
Incurred under clause (viii) of paragraph (b) of Section 1011; (iii) the
repurchase, redemption or other acquisition of Capital Stock of the Company in
exchange for, or out of the Net Cash Proceeds of a substantially concurrent (A)
capital contribution to the Company or (B) offering of, shares of Capital Stock
(other than Redeemable Stock) of the Company (except to the extent such proceeds
are used to incur new Indebtedness outstanding pursuant to clause (viii) of
paragraph (b) of Section 1011); (iv) the acquisition of Indebtedness of the
Company which is subordinated in right of payment to the Notes in exchange for,
or out of the proceeds of, a substantially concurrent (A) capital contribution
to the Company or (B) offering of, shares of the Capital Stock of the Company
(other than Redeemable Stock) (except to the extent such proceeds are used to
incur new Indebtedness outstanding pursuant to clause (viii) of paragraph (b) of
Section 1011); (v) payments or distributions to dissenting stockholders in
accordance with applicable law, pursuant to or in connection with a
consolidation, merger or transfer of assets that complies with Article Eight;
(vi) the declaration or payment of any dividend or distribution in respect of,
and in accordance with the terms of, the Company's (A) 50,000 outstanding shares
of 4.25%
<PAGE>   73
Cumulative Senior Perpetual Convertible Preferred Stock, Series A, par value
$0.01 per share (the "Senior Preferred Stock"), and, in the event that The 1818
Fund III, L.P. ("The 1818 Fund") exercises its option to purchase up to 20,000
additional shares of Senior Preferred Stock, then such additional shares as well
and (B) 23,174 outstanding shares of 4.25% Cumulative Junior Convertible
Preferred Stock, Series B, par value $0.01 per share (the "Junior Preferred
Stock"); (vii) the conversion of the Senior Preferred Stock, the Junior
Preferred Stock or the Company's Convertible Preferred Stock, Series C, par
value $0.01 per share, into Capital Stock of the Company in accordance with the
terms of such preferred stock; (viii) the exercise of employee or non-employee
options to purchase the Capital Stock of the Company; and (ix) other Restricted
Payments not to exceed $2 million; provided that, except in the case of clause
(i), no Default or Event of Default shall have occurred and be continuing or
occur as a consequence of the actions or payments set forth therein.

                  Each Restricted Payment permitted pursuant to the immediately
preceding paragraph (other than the Restricted Payment referred to in clause
(ii) thereof) and the Net Cash Proceeds from any capital contributions to the
Company or issuance of Capital Stock referred to in clauses (iii) and (iv) of
the immediately preceding paragraph, shall be included in calculating whether
the conditions of clause (C) of the first paragraph of this Section 1012 have
been met with respect to any subsequent Restricted Payments. In the event the
proceeds of an issuance of Capital Stock of the Company are used for the
redemption, repurchase or other acquisition of the Notes, then the Net Cash
Proceeds of such issuance shall be included in clause (C) of the first paragraph
of this Section 1012 only to the extent such proceeds are not used for such
redemption, repurchase or other acquisition of the Notes.

SECTION 1013.     Limitation on Dividend and Other Payment Restrictions
                  Affecting Restricted Subsidiaries.

                  So long as any of the Notes are Outstanding, the Company shall
not, and shall not permit any Restricted Subsidiary to, create or otherwise
cause or suffer to exist or become effective any consensual encumbrance or
restriction of any kind on the ability of any Restricted Subsidiary to do any
one of the following:

                  (i)      pay dividends or make any other distributions
         permitted by applicable law on any Capital Stock of such Restricted
         Subsidiary owned by the Company or any other Restricted Subsidiary;

                  (ii)     pay any Indebtedness owed to the Company or any other
         Restricted Subsidiary;

                  (iii)    make loans or advances to the Company or any other
         Restricted Subsidiary; or

                  (iv)     transfer any of its property or assets (including the
         Capital Stock of any Restricted Subsidiary) to the Company or any other
         Restricted Subsidiary.


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<PAGE>   74

                  The foregoing provisions shall not restrict any encumbrances
or restrictions:

                  (i)      existing on the Exchange Date in this Indenture or
         any other agreements or instruments in effect on the Exchange Date, and
         any extensions, refinancings, renewals or replacements of such
         agreements; provided that the encumbrances and restrictions in any such
         extensions, refinancings, renewals or replacements are no less
         favorable in any material respect to the Holders than those
         encumbrances or restrictions that are then in effect and that are being
         extended, refinanced, renewed or replaced;

                  (ii)     contained in the terms of any Indebtedness or any
         agreement pursuant to which such Indebtedness was issued if the
         encumbrance or restriction applies only in the event of a default with
         respect to a financial covenant contained in such Indebtedness or
         agreement and such encumbrance or restriction is not materially, more
         disadvantageous to the Holders than is customary in comparable
         financing (as determined by the Company) and the Company determines
         that any such encumbrance or restriction will not materially affect the
         Company's ability to make principal or interest payments on the Notes;

                  (iii)    existing under or by reason of applicable law;

                  (iv)     existing with respect to any Person or the property
         or assets of such Person acquired by the Company or any Restricted
         Subsidiary, existing at the time of such acquisition and not incurred
         in contemplation thereof, which encumbrances or restrictions are not
         applicable to any Person or the property or assets of any Person other
         than such Person or the property or assets of such Person so acquired;

                  (v)      in the case of clause (iv) of the first paragraph of
         this Section 1013, (A) that restrict in a customary manner the
         subletting, assignment or transfer of any property or asset that is, or
         is subject to, a lease, purchase mortgage obligation, license,
         conveyance or contract or similar property or asset, (B) existing by
         virtue of any transfer of, agreement to transfer, option or right with
         respect to, or Lien on, any property or assets of the Company or any
         Restricted Subsidiary not otherwise prohibited by this Indenture or (C)
         arising or agreed to in the ordinary course of business, not relating
         to any Indebtedness, and that do not, individually or in the aggregate,
         detract from the value of property or assets of the Company or any
         Restricted Subsidiary in any manner material to the Company or any
         Restricted Subsidiary; or

                  (vi)     with respect to a Restricted Subsidiary and imposed
         pursuant to an agreement that has been entered into for the sale or
         disposition of all or substantially all of the Capital Stock of, or
         property and assets of, such Restricted Subsidiary. Nothing contained
         in this Section 1013 shall prevent the Company or any Restricted
         Subsidiary from (1) creating, incurring, assuming or suffering to exist
         any Liens otherwise permitted in Section 1016 or (2) restricting the
         sale or other disposition of property or assets of the


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<PAGE>   75

         Company or any of its Restricted Subsidiaries that secure Indebtedness
         of the Company or any of its Restricted Subsidiaries.

SECTION 1014.     Limitation on the Issuance and Sale of Capital Stock of
                  Restricted Subsidiaries.

                  The Company shall not, and shall not permit any Restricted
Subsidiary, directly or indirectly, to issue, transfer, distribute, convey,
sell, lease or otherwise dispose of any shares of Capital Stock (including
options, warrants or other rights to purchase shares of such Capital Stock) of
such or any other Restricted Subsidiary (other than to the Company or a Wholly
Owned Restricted Subsidiary or in respect of any director's qualifying shares or
sales of shares of Capital Stock to foreign nationals mandated by applicable law
or pursuant to the exercise of employee or non-employee options to purchase the
Capital Stock of the Company) to any Person unless (A) the Net Cash Proceeds
from such issuance, transfer, conveyance, sale, lease or other disposition are
applied in accordance with Section 1017, (B) immediately after giving effect to
such issuance, transfer, conveyance, sale, lease or other disposition, such
Restricted Subsidiary would no longer constitute a Restricted Subsidiary and (C)
any Investment in such Person remaining after giving effect to such issuance,
transfer, conveyance, sale, lease or other disposition would have been permitted
to be made under Section 1012 if made on the date of such issuance, transfer,
conveyance, sale, lease or other disposition (valued as provided in the
definition of "Investment" contained in Section 101).

SECTION 1015.     Limitation on Transactions with Stockholders and Affiliates.

                  The Company shall not, and shall not permit any Restricted
Subsidiary to, directly or indirectly, enter into, renew or extend any
transaction (including, without limitation, the purchase, sale, lease or
exchange of property or assets, or the rendering of any service) with any holder
(or any Affiliate of such holder) of 5% or more of any class of Capital Stock of
the Company or any Restricted Subsidiary or with any Affiliate of the Company or
any Restricted Subsidiary, unless the following conditions have been met:

                  (i)      such transaction or series of transactions is on
         terms no less favorable to the Company or such Restricted Subsidiary
         than those that could be obtained in a comparable arm's-length
         transaction with a Person that is not such a holder or an Affiliate;

                  (ii)     if such transaction or series of transactions
         involves aggregate consideration in excess of $2 million, then such
         transaction or series of transactions is approved by a majority of the
         Board of Directors of the Company and is evidenced by a resolution
         therein; and

                  (iii)    if such transaction or series of transactions
         involves aggregate consideration in excess of $10 million, then the
         Company or such Restricted


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<PAGE>   76

         Subsidiary shall deliver to the Trustee a written opinion as to the
         fairness to the Company or such Restricted Subsidiary of such
         transaction from a financial point of view from a nationally recognized
         investment banking firm (or, if an investment banking firm is generally
         not qualified to give such an opinion, by a nationally recognized
         appraisal firm or accounting firm).

                  The foregoing limitation does not limit, and will not apply to
(i) any transaction between the Company and any of its Restricted Subsidiaries
or between Restricted Subsidiaries; (ii) the payment of reasonable and customary
regular fees to directors of the Company who are not employees of the Company;
(iii) any Restricted Payments not prohibited by Section 1012; (iv) loans and
advances to officers or employees of the Company and its Subsidiaries not
exceeding at any one time outstanding $1.5 million in the aggregate, made in the
ordinary course of business; (v) arrangements with TMG, Armstrong and/or its
subsidiaries existing on the date of the Original Indenture and listed on
Schedule A attached thereto as such arrangements may be extended or renewed;
provided that the terms of any arrangement altered by any such extension or
renewal may not be altered in a manner adverse to the Company or the Holders of
the Notes; (vi) the issuance of up to 20,000 additional shares of Senior
Preferred Stock to The 1818 Fund pursuant to an option agreement existing on the
date of this Indenture; (vii) the sale to and purchase by the Company from MCI
WorldCom, Inc. and its Affiliates of telecommunications services and equipment
in the ordinary course of business; (viii) the issuance and sale by the Company
of Common Stock whether pursuant to the conversion of the Senior Preferred
Stock, the Junior Preferred Stock or the Company's Convertible Preferred Stock,
Series C, par value $0.01 per share, into Capital Stock of the Company, the
exercise of any employee or non-employee options to purchase the Capital Stock
of the Company; and (ix) the Company's and any of its Restricted Subsidiaries'
arrangements with the World Access Charitable Trust listed on Schedule A
attached hereto as such arrangements exist on the Exchange Date and as such
arrangements may be amended; provided that the terms of any such amendments are
not materially adverse to the Company, any Restricted Subsidiary or the Holders
of the Notes.

SECTION 1016.     Limitation on Liens.

                  The Company shall not, and shall not permit any Restricted
Subsidiary to, directly or indirectly, create, incur, assume or suffer to exist
any Lien (other than Permitted Liens) on any of its assets or properties of any
character (including, without limitation, licenses and trademarks), or any
shares of Capital Stock or Indebtedness of any Restricted Subsidiary, whether
owned at the date of this Indenture or thereafter acquired, or any income,
profits or proceeds therefrom, or assign or otherwise convey any right to
receive income thereof, without making effective provision for all of the Notes
and all other amounts ranking pari passu with the Notes to be directly secured
equally and ratably with the obligation or liability secured by such Lien or, if
such obligation or liability is subordinated to the Notes and other amounts
ranking pari passu with the Notes, without making provision for the Notes and
such other amounts to be directly secured prior to the obligation or liability
secured by such Lien.

SECTION 1017.     Limitation on Asset Sales.


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                  The Company shall not, and shall not permit any Restricted
Subsidiary to, make any Asset Sale unless (i) the Company or the Restricted
Subsidiary, as the case may be, receives consideration at the time of such sale
or other disposition at least equal to the Fair Market Value of the assets sold
or disposed of as determined by the good faith judgment of the Board of
Directors evidenced by a Board Resolution and (ii) at least 80% of the
consideration received for such sale or other disposition consists of cash or
cash equivalents or the assumption of unsubordinated Indebtedness; provided that
any securities, notes or other obligations issued by an Investment Grade Company
with a Total Equity Market Capitalization in excess of $25 billion determined at
the time any commitment to effect any such Asset Sale is entered into which are
received by the Company or the Restricted Subsidiary, as the case may be, and
are converted within 180 days thereof into cash or cash equivalents shall be
deemed to be cash or cash equivalents; provided further that the amount of cash
or cash equivalents realized upon the sale of any such securities, notes or
other obligations must be included within the amount of Net Cash Proceeds for
purposes of clause (i)(B) of the next paragraph.

                  The Company shall, or shall cause the relevant Restricted
Subsidiary to, within 270 days after the date of receipt of the Net Cash
Proceeds from an Asset Sale, (i) (A) apply an amount equal to such Net Cash
Proceeds to permanently repay unsubordinated Indebtedness of the Company or
Indebtedness of any Restricted Subsidiary, in each case owing to a Person other
than the Company or any of its Restricted Subsidiaries, or (B) if the Net Cash
Proceeds from such Asset Sale exceed $15 million, apply an amount equal to such
Net Cash Proceeds to make an offer to purchase (an "Offer to Purchase") from the
Holders on a pro rata basis an aggregate principal amount of Notes equal to such
Net Cash Proceeds, at a purchase price equal to 100% of the principal amount of
the Notes, plus, in each case, accrued and unpaid interest to the date of
purchase and less the product of (a) the Market Value per share of the Common
Stock of the Company and (b) the number of shares (including any portion of a
share) of such Common Stock determined by dividing $50 by the Market Price of
the Common Stock for each $1,000 in principal amount of Notes accepted for
purchase by the Company (the "Offer to Purchase Payment"), provided that the
Company shall not be obligated to make any Offer to Purchase after it has made
one or more Offers to Purchase, which Offer or Offers to Purchase, in the
aggregate, were for an aggregate principal amount of Notes equal to the
aggregate principal amount of Notes issued on the Exchange Date (regardless of
the actual aggregate principal amount of Notes actually tendered in such Offer
or Offers to Purchase), or (C) if the Company has made sufficient Offers to
Purchase such that it has satisfied its obligation as described in the final
proviso to clause (B), invest an equal amount, or the amount not so applied
pursuant to clause (A), in property or assets of a nature or type or that are
used in a business (or in a company having property and assets of a nature or
type, or engaged in a business) similar or related to the nature or type of the
property and assets of, or the business of, the Company and its Restricted
Subsidiaries existing on the date of such investment (as determined in good
faith by the Board of Directors, whose determination shall be conclusive and
evidenced by a Board Resolution) and (ii) apply (no later than the end of the
270-day period referred to above) such excess Net Cash Proceeds (to the extent
not applied pursuant to clause (i)) as provided in the following paragraphs of
this Section 1017. The amount of such Net Cash Proceeds required to be applied
(or to be


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<PAGE>   78

committed to be applied) during such 270-day period referred to above in the
preceding sentence and not applied as so required by the end of such period
shall constitute "Excess Proceeds".

                  If, as of the first day of any calendar month, the aggregate
amount of Excess Proceeds not theretofore subject to an Excess Proceeds Offer
(as defined below) totals at least $10 million, the Company must, not later than
the 30th Business Day thereafter, make an offer (an "Excess Proceeds Offer") to
purchase from the Holders on a pro rata basis an aggregate principal amount of
Notes equal to the Excess Proceeds on such date, at a purchase price equal to
100% of the principal amount of the Notes, plus, in each case, accrued and
unpaid interest to the date of purchase less the product of (a) the Market Value
per share of the Common Stock of the Company and (b) the number of shares
(including any portion of a share) of such Common Stock determined by dividing
$50 by the Market Price of the Common Stock for each $1,000 in principal amount
of Notes accepted for purchase by the Company (the "Excess Proceeds Payment").

                  The Company shall commence an Offer to Purchase or an Excess
Proceeds Offer by mailing a notice to the Trustee and each Holder stating: (i)
that the Offer to Purchase or Excess Proceeds Offer, as applicable, is being
made pursuant to this Section 1017 and that all Notes validly tendered will be
accepted for payment on a pro rata basis; (ii) the purchase price and the date
of purchase (which shall be a Business Day no earlier than 30 days nor later
than 60 days from the date such notice is mailed) (the "Offer Payment Date");
(iii) that any Note not tendered will continue to accrue interest pursuant to
its terms; (iv) that, unless the Company defaults in the payment of the Offer to
Purchase Payment or the Excess Proceeds Payment, as applicable, any Note
accepted for payment pursuant to the Offer to Purchase or the Excess Proceeds
Offer, as applicable, shall cease to accrue interest on and after the applicable
Offer Payment Date; (v) that Holders electing to have a Note purchased pursuant
to the Offer to Purchase or the Excess Proceeds Offer, as applicable, will be
required to surrender the Note, together with the form entitled "Option of the
Holder to Elect Purchase" on the reverse side of the Note completed, to the
Paying Agent at the address specified in the notice prior to the close of
business on the Business Day immediately preceding the applicable Offer Payment
Date; (vi) that Holders shall be entitled to withdraw their election if the
Paying Agent receives, not later than the close of business on the third
Business Day immediately preceding the applicable Offer Payment Date, a
telegram, facsimile transmission or letter setting forth the name of such
Holder, the principal amount of Notes delivered for purchase and a statement
that such Holder is withdrawing his election to have such Notes purchased; and
(vii) that Holders whose Notes are being purchased only in part will be issued
new Notes equal in principal amount to the unpurchased portion of the Notes
surrendered; provided that each Note purchased and each new Note issued shall be
in a principal amount of $1,000 or integral multiples thereof.

                  On the applicable Offer Payment Date, the Company shall (i)
accept for payment on a pro rata basis Notes or portions thereof tendered
pursuant to the Offer to Purchase or the Excess Proceeds Offer, as applicable;
(ii) deposit with the Paying Agent money sufficient to pay the purchase price of
all Notes or portions thereof so accepted; and (iii) deliver, or cause to be
delivered, to the Trustee all Notes or portions thereof so accepted together
with an Officer's


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<PAGE>   79

Certificate specifying the Notes or portions thereof accepted for payment by the
Company. The Paying Agent shall promptly mail to the Holders of Notes so
accepted payment in an amount equal to the purchase price, and the Trustee shall
upon Company Order promptly authenticate and mail to such Holders a new Note
equal in principal amount to any unpurchased portion of the Note surrendered;
provided that each Note purchased and each new Note issued shall be in a
principal amount of $1,000 or integral multiples thereof. With respect to any
Excess Proceeds Offer, to the extent that the aggregate principal amount of
Notes tendered is less than the Excess Proceeds, the Company may use any
remaining Excess Proceeds for general corporate purposes. The Company shall
publicly announce the results of the Excess Proceeds Offer as soon as
practicable after the Offer Payment Date. For purposes of this Section 1017, the
Trustee shall act as the Paying Agent.

                  The Company shall comply with Rule 14e-1 under the Exchange
Act and any other securities laws and regulations thereunder to the extent such
laws and regulations are applicable, in the event that the Company undertakes an
Offer to Purchase or Excess Proceeds Offer under this Section 1017.

SECTION 1018.     Limitation on Issuances of Guarantees of Indebtedness by
                  Restricted Subsidiaries.

                  The Company shall not permit any Restricted Subsidiary,
directly or indirectly, to Guarantee, assume or in any other manner become
liable with respect to any Indebtedness of the Company, other than Indebtedness
under Credit Facilities incurred under clause (iii) of paragraph (b) in Section
1011, unless (i) such Restricted Subsidiary simultaneously executes and delivers
a supplemental indenture to this Indenture providing for a Guarantee of the
Notes on terms substantially similar to the Guarantee of such Indebtedness,
except that if such Indebtedness is by its express terms subordinated in right
of payment to the Notes, any such assumption, Guarantee or other liability of
such Restricted Subsidiary with respect to such Indebtedness shall be
subordinated in right of payment to such Restricted Subsidiary's assumption,
Guarantee or other liability with respect to the Notes substantially to the same
extent as such Indebtedness is subordinated to the Notes and (ii) such
Restricted Subsidiary waives, and shall not in any manner whatsoever claim or
take the benefit or advantage of, any rights of reimbursement, indemnity or
subrogation or any other rights against the Company or any other Restricted
Subsidiary as a result of any payment by such Restricted Subsidiary under its
Guarantee.

                  Notwithstanding the foregoing, any Guarantee by a Restricted
Subsidiary may provide by its terms that it will be automatically and
unconditionally released and discharged upon (i) any sale, exchange or transfer,
to any Person not an Affiliate of the Company, of all of the Company's and each
Restricted Subsidiary's Capital Stock in, or all or substantially all of the
assets of, such Restricted Subsidiary (which sale, exchange or transfer is not
prohibited by this Indenture) or (ii) the release or discharge of the guarantee
which resulted in the creation of such Guarantee, except a discharge or release
by or as a result of payment under such Guarantee.

SECTION 1019.     Business of the Company; Restriction on Transfers of Existing
                  Business.


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                  The Company shall not, and shall not permit any Restricted
Subsidiary to, be principally engaged in any business or activity other than a
Permitted Business. In addition, the Company and any Restricted Subsidiary shall
not be permitted to, directly or indirectly, transfer to any Unrestricted
Subsidiary (i) any of the licenses, material agreements or instruments, permits
or authorizations used in the Permitted Business of the Company and any
Restricted Subsidiary on the Exchange Date or (ii) any material portion of the
"property and equipment" (as such term is used in the Company's consolidated
financial statements) of the Company or any Restricted Subsidiary used in the
licensed service areas of the Company and any Restricted Subsidiary as they
exist on the Exchange Date.

SECTION 1020.     Limitation on Investments in Unrestricted Subsidiaries.

                  The Company shall not make, and shall not permit any of its
Restricted Subsidiaries to make, any Investments in Unrestricted Subsidiaries
if, at the time thereof, the aggregate amount of such Investments together with
any other Restricted Payments made after the Exchange Date would exceed the
amount of Restricted Payments then permitted to be made pursuant to Section
1012. Any Investments in Unrestricted Subsidiaries permitted to be made pursuant
to this covenant (i) shall be treated as the making of a Restricted Payment in
calculating the amount of Restricted Payments made by the Company or a
Subsidiary and (ii) may be made in cash or property (if made in property, the
Fair Market Value thereof as determined by the Board of Directors of the Company
(whose determination shall be conclusive and evidenced by a Board Resolution)
shall be deemed to be the amount of such Investment for the purpose of clause
(i) of this Section 1020).

SECTION 1021.     Limitation on Sale-Leaseback Transactions.

                  The Company shall not, and shall not permit any of its
Restricted Subsidiaries to, enter into any Sale-Leaseback Transaction with
respect to any property of the Company or any of its Restricted Subsidiaries.

                  Notwithstanding the foregoing, the Company may enter into
Sale-Leaseback Transactions; provided, however, that (a) the Attributable Value
of such Sale-Leaseback Transaction shall be deemed to be Indebtedness of the
Company and (b) after giving pro forma effect to any such Sale-Leaseback
Transaction and the foregoing clause (a), other than any Sale- Leaseback
Transaction involving NACT Telecommunications, Inc.'s facility in Provo, Utah,
the Company would be able to incur $1.00 of additional Indebtedness (other than
Permitted Indebtedness) pursuant to Section 1011.

SECTION 1022.     Waiver of Certain Covenants.

                  The Company may omit in any particular instance to comply with
any term, provision or condition set forth in Section 803 or Sections 1007
through 1021, inclusive, if before or after the time for such compliance the
Holders of at least a majority in aggregate principal amount of the Outstanding
Notes, by Act of such Holders, waive such compliance in


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<PAGE>   81

such instance with such term, provision or condition, but no such waiver shall
extend to or affect such term, provision or condition except to the extent so
expressly waived, and, until such waiver shall become effective, the obligations
of the Company and the duties of the Trustee in respect of any such term,
provision or condition shall remain in full force and effect.

                                 ARTICLE ELEVEN

                               REDEMPTION OF NOTES

SECTION 1101.     Right of Redemption.

                  (a)      The Notes may be redeemed, at the election of the
Company, as a whole or in part, at any time or from time to time, on or after
January 15, 2003, subject to the conditions and at the Redemption Prices
specified in the form of Note, together with accrued and unpaid interest thereon
to the Redemption Date.

                  (b)      Notwithstanding the foregoing, prior to January 15,
2001, the Company may redeem up to 35% of the originally issued aggregate
principal amount of the Notes on one or more occasions with the Net Cash
Proceeds of one or more Public Equity Offerings at a redemption price equal to
110.5% of the aggregate principal amount thereof, plus accrued interest, if any,
thereon to the Redemption Date (subject to the right of Holders of record on the
relevant Regular Record Date to receive interest due on an Interest Payment
Date); provided that, immediately after giving effect to such redemption, at
least 65% of the originally issued aggregate principal amount of the Notes
remains Outstanding; and provided further that notice of such redemptions shall
be given within 60 days of the date of closing of any such Public Equity
Offering.

SECTION 1102.     Applicability of Article.

                  Redemption of Notes at the election of the Company or
otherwise, as permitted or required by any provision of this Indenture, shall be
made in accordance with such provision and this Article.

SECTION 1103.     Election to Redeem; Notice to Trustee.

                  The election of the Company to redeem any Notes pursuant to
Section 1101 shall be evidenced by a Board Resolution. In case of any redemption
at the election of the Company, the Company shall, at least 60 days prior to the
Redemption Date fixed by the Company (unless a shorter notice shall be
satisfactory to the Trustee), notify the Trustee of such Redemption Date and of
the Redemption Price and of the principal amount of Notes to be redeemed and
shall deliver to the Trustee such documentation and records as shall enable the
Trustee to select the Notes to be redeemed pursuant to Section 1104.


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<PAGE>   82

SECTION 1104.     Selection by Trustee of Notes to Be Redeemed.

                  If less than all the Notes are to be redeemed, the particular
Notes to be redeemed shall be selected not more than 60 days prior to the
Redemption Date by the Trustee, from the Outstanding Notes not previously called
for redemption, in compliance with the requirements of the principal national
securities exchange, if any, on which the Notes are listed or, if the Notes are
not listed on a national securities exchange, on a pro rata basis; provided,
however, that no such partial redemption shall reduce the portion of the
principal amount of a Note not redeemed to less than $1,000.

                  The Trustee shall promptly notify the Company in writing of
the Notes selected for redemption and, in the case of any Notes selected for
partial redemption, the principal amount thereof to be redeemed.

                  For all purposes of this Indenture, unless the context
otherwise requires, all provisions relating to redemption of Notes shall relate,
in the case of any Note redeemed or to be redeemed only in part, to the portion
of the principal amount of such Note which has been or is to be redeemed.

SECTION 1105.     Notice of Redemption.

                  Notice of redemption shall be given in the manner provided for
in Section 106 not less than 30 nor more than 60 days prior to the Redemption
Date, to each Holder of Notes to be redeemed.

                  All notices of redemption shall state:

                  (1)      the Redemption Date;

                  (2)      the Redemption Price and the amount of accrued
         interest to the Redemption Date payable as provided in Section 1107, if
         any;

                  (3)      if less than all Outstanding Notes are to be
         redeemed, the identification (and, in the case of a partial redemption,
         the principal amounts) of the particular Notes to be redeemed;

                  (4)      in case any Note is to be redeemed in part only, the
         notice which relates to such Note shall state that on and after the
         Redemption Date, upon surrender of such Note, the Holder shall receive,
         without charge, a new Note or Notes of authorized denominations for the
         principal amount thereof remaining unredeemed;

                  (5)      that on the Redemption Date the Redemption Price (and
         accrued interest, if any, to the Redemption Date payable as provided in
         Section 1107) will become due and


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<PAGE>   83

         payable upon each such Note, or the portion thereof, to be redeemed,
         and that interest thereon will cease to accrue on and after said date;
         and

                  (6)      the place or places where such Notes are to be
         surrendered for payment of the Redemption Price and accrued interest,
         if any.

                  Notice of redemption of Notes to be redeemed at the election
of the Company shall be given by the Company or, at the Company's written
request, by the Trustee in the name and at the expense of the Company.

SECTION 1106.     Deposit of Redemption Price.

                  Prior to any Redemption Date, the Company shall deposit with
the Trustee or with a Paying Agent (or, if the Company is acting as its own
Paying Agent, segregate and hold in trust as provided in Section 1003) an amount
of money sufficient to pay the Redemption Price of, and accrued interest on, all
the Notes which are to be redeemed on that date.

SECTION 1107.     Notes Payable on Redemption Date.

                  Notice of redemption having been given as aforesaid, the Notes
so to be redeemed shall, on the Redemption Date, become due and payable at the
Redemption Price therein specified (together with accrued interest, if any, to
the Redemption Date), and from and after such date (unless the Company shall
default in the payment of the Redemption Price and accrued interest) such Notes
shall cease to bear interest. Upon surrender of any such Note for redemption in
accordance with said notice, such Note shall be paid by the Company at the
Redemption Price, together with accrued interest, if any, to the Redemption
Date; provided, however, that installments of interest whose Stated Maturity is
on or prior to the Redemption Date shall be payable to the Holders of such
Notes, or one or more Predecessor Notes, registered as such at the close of
business on the relevant Regular Record Dates according to their terms and the
provisions of Section 307.

                  If any Note called for redemption shall not be so paid upon
surrender thereof for redemption, the principal (and premium, if any) shall,
until paid, bear interest from the Redemption Date at the rate borne by the
Notes.

SECTION 1108.     Notes Redeemed in Part.

                  Any Note which is to be redeemed only in part (pursuant to the
provisions of this Article Eleven) shall be surrendered at the office or agency
of the Company maintained for such purpose pursuant to Section 1002 (with, if
the Company or the Trustee so requires, due endorsement by, or a written
instrument of transfer in form satisfactory to the Company and the Trustee duly
executed by, the Holder thereof or such Holder's attorney duly authorized in
writing), and the Company shall execute, and the Trustee shall upon Company
Order authenticate and deliver to the Holder of such Note without service
charge, a new Note or Notes,


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<PAGE>   84

of any authorized denomination as requested by such Holder, in aggregate
principal amount equal to and in exchange for the unredeemed portion of the
principal of the Note so surrendered.

                                 ARTICLE TWELVE

                                    SECURITY

SECTION 1201.     Security.

                  (a)      On the Exchange Date, the pro rata portion of the
total amount of the FaciliCom Pledged Securities based on the percentage of the
aggregate principal amount of the FaciliCom Notes exchanged for Notes shall be
released from the FaciliCom Pledge Account and deposited in the Pledge Account
by the Company to be held pursuant to the Pledge Agreement. The Pledged
Securities shall be pledged by the Company to the Trustee for the benefit of the
Holders and shall be held by the Trustee in the Pledge Account pending
disposition pursuant to the Pledge Agreement.

                  (b)      Each Holder, by its acceptance of a Note, consents
and agrees to the terms of the Pledge Agreement (including, without limitation,
the provisions providing for foreclosure and release of the Pledged Securities)
as the same may be in effect or may be amended from time to time in accordance
with its terms, and authorizes and directs the Trustee to enter into the Pledge
Agreement and to perform its respective obligations and exercise its respective
rights thereunder in accordance therewith. The Company shall do or cause to be
done all such acts and things as may be necessary or proper, or as may be
required by the provisions of the Pledge Agreement, to assure and confirm to the
Trustee the security interest in the Pledged Securities contemplated hereby, by
the Pledge Agreement or any part thereof, as from time to time constituted, so
as to render the same available for the security and benefit of this Indenture
and of the Notes secured hereby, according to the intent and purposes herein
expressed. The Company shall take, or shall cause to be taken, any and all
actions reasonably required (and any action reasonably requested by the Trustee)
to cause the Pledge Agreement to create and maintain, as security for the
obligations of the Company under this Indenture and the Notes, valid and
enforceable first priority liens in and on all the Pledged Securities, in favor
of the Trustee, superior to and prior to the rights of third Persons and subject
to no other Liens.

                  (c)      The release of any Pledged Securities pursuant to the
Pledge Agreement will not be deemed to impair the security under this Indenture
in contravention of the provisions hereof if and to the extent the Pledged
Securities are released pursuant to this Indenture and the Pledge Agreement. To
the extent applicable, the Company shall cause TIA Section 314(d) relating to
the release of property or securities from the Lien and security interest of the
Pledge Agreement (other than pursuant to Sections 7(e) and 7(g) thereof) and
relating to the substitution therefor of any property or securities to be
subjected to the Lien and security interest of the Pledge Agreement to be
complied with. Any certificate or opinion required by TIA Section 314(d) may be
made by an officer of the Company, except in cases where TIA Section 314(d)


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<PAGE>   85

requires that such certificate or opinion be made by an independent Person,
which Person shall be an independent engineer, appraiser or other expert
selected by the Company.

                  (d)      The Trustee, in its sole discretion and without the
consent of the Holders, may, and at the request of the Holders of at least 25%
in aggregate principal amount of Notes then Outstanding shall, on behalf of the
Holders, take all actions it deems necessary or appropriate in order to (i)
enforce any of the terms of the Pledge Agreement and (ii) collect and receive
any and all amounts payable in respect of the obligations of the Company
thereunder. The Trustee shall have power to institute and to maintain such suits
and proceedings as the Trustee may deem expedient to preserve or protect its
interests and the interests of the Holders in the Pledged Securities (including
power to institute and maintain suits or proceedings to restrain the enforcement
of or compliance with any legislative or other governmental enactment, rule or
order that may be unconstitutional or otherwise invalid if the enforcement of,
or compliance with, such enactment, rule or order would impair the security
interest hereunder or be prejudicial to the interests of the Holders or of the
Trustee).

                                ARTICLE THIRTEEN

                       DEFEASANCE AND COVENANT DEFEASANCE

SECTION 1301.     Company's Option to Effect Defeasance or Covenant Defeasance.

                  The Company may, at its option by Board Resolution, at any
time, with respect to the Notes, elect to have either Section 1302 or Section
1303 be applied to all Outstanding Notes upon compliance with the conditions set
forth below in this Article Thirteen.

SECTION 1302.     Defeasance and Discharge.

                  Upon the Company's exercise under Section 1301 of the option
applicable to this Section 1302, the Company shall be deemed to have been
discharged from its obligations with respect to all Outstanding Notes on the
date the conditions set forth in Section 1304 are satisfied (hereinafter,
"defeasance"). For this purpose, such defeasance means that the Company shall be
deemed to have paid and discharged the entire indebtedness represented by the
Outstanding Notes, which shall thereafter be deemed to be "Outstanding" only for
the purposes of Section 1305 and the other Sections of this Indenture referred
to in (A) and (B) below, and to have satisfied all its other obligations under
such Notes and this Indenture insofar as such Notes are concerned (and the
Trustee, at the expense of the Company, shall execute proper instruments
acknowledging the same), except for the following which shall survive until
otherwise terminated or discharged hereunder: (A) the rights of Holders of
Outstanding Notes to receive payments, (solely from monies deposited in trust)
in respect of the principal of, premium, if any, and interest on such Notes when
such payments are due, (B) the Company's obligations with respect to such Notes
under Sections 304, 305, 306, 1002 and 1003, (C) the rights, powers, trusts,
duties and immunities of the Trustee hereunder and (D) this Article Thirteen.
Subject to


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<PAGE>   86

compliance with this Article Thirteen, the Company may exercise its option under
this Section 1302 notwithstanding the prior exercise of its option under Section
1303 with respect to the Notes.

SECTION 1303.     Covenant Defeasance.

                  Upon the Company's exercise under Section 1301 of the option
applicable to this Section 1303, the Company shall be released from its
obligations under any covenant contained in Section 801(3) and (4) and Section
803 and in Sections 1007 through 1022 with respect to the Outstanding Notes on
and after the date the conditions set forth below are satisfied (hereinafter,
"covenant defeasance"), and the Notes shall thereafter be deemed not to be
"Outstanding" for the purposes of any direction, waiver, consent or declaration
or Act of Holders (and the consequences of any thereof) in connection with such
covenants, but shall continue to be deemed "Outstanding" for all other purposes
hereunder. For this purpose, such covenant defeasance means that, with respect
to the Outstanding Notes, the Company may omit to comply with and shall have no
liability in respect of any term, condition or limitation set forth in any such
covenant, whether directly or indirectly, by reason of any reference elsewhere
herein to any such covenant or by reason of any reference in any such covenant
to any other provision herein or in any other document and such omission to
comply shall not constitute a Default or an Event of Default under Section
501(6), but, except as specified above, the remainder of this Indenture and such
Notes shall be unaffected thereby.

SECTION 1304.     Conditions to Defeasance or Covenant Defeasance.

                  The following shall be the conditions to application of either
Section 1302 or Section 1303 to the Outstanding Notes:

                  (1)      The Company shall irrevocably have deposited or
         caused to be deposited with the Trustee (or another trustee satisfying
         the requirements of Section 607 who shall agree to comply with the
         provisions of this Article Thirteen applicable to it) as trust funds in
         trust for the purpose of making the following payments, specifically
         pledged as security for, and dedicated solely to, the benefit of the
         Holders of such Notes, (A) cash in United States dollars, or (B) U.S.
         Government Obligations or (C) a combination thereof, in such amounts as
         will be sufficient, in the opinion of a nationally recognized firm of
         independent public accountants expressed in a written certification
         thereof delivered to the Trustee, to pay and discharge, and which shall
         be applied by the Trustee (or other qualifying trustee) to pay and
         discharge, (i) the principal of (and premium, if any), and interest on,
         the Outstanding Notes on the Stated Maturity (or Redemption Date, if
         applicable) of such principal (and premium, if any) or installment of
         interest and (ii) any mandatory sinking fund payments or analogous
         payments applicable to the Outstanding Notes on the day on which such
         payments are due and payable in accordance with the terms of this
         Indenture and of such Notes; provided that the Trustee shall have been
         irrevocably instructed to apply such money or the proceeds of such U.S.
         Government Obligations to said payments with respect to the Notes.
         Before such a deposit, the


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<PAGE>   87

         Company may give to the Trustee, in accordance with Section 1103
         hereof, a notice of its election to redeem all of the Outstanding Notes
         at a future date in accordance with Article Eleven hereof, which notice
         shall be irrevocable. Such irrevocable redemption notice, if given,
         shall be given effect in applying the foregoing. For this purpose,
         "U.S. Government Obligations" means securities that are (x) direct
         obligations of the United States of America for the timely payment of
         which its full faith and credit is pledged or (y) obligations of a
         Person controlled or supervised by and acting as an agency or
         instrumentality of the United States of America the timely payment of
         which is unconditionally guaranteed as a full faith and credit
         obligation by the United States of America, which, in either case, are
         not callable or redeemable at the option of the issuer thereof, and
         shall also include a depository receipt issued by a bank (as defined in
         Section 3(a)(2) of the Securities Act), as custodian with respect to
         any such U.S. Government Obligation or a specific payment of principal
         of or interest on any such U.S. Government Obligation held by such
         custodian for the account of the holder of such depository receipt,
         provided that (except as required by law) such custodian is not
         authorized to make any deduction from the amount payable to the holder
         of such depository receipt from any amount received by the custodian in
         respect of the U.S. Government Obligation or the specific payment of
         principal of or interest on the U.S. Government Obligation evidenced by
         such depository receipt.

                  (2)      No Default or Event of Default with respect to the
         Notes shall have occurred and be continuing on the date of such deposit
         or, insofar as paragraph (9) or (10) of Section 501 hereof is
         concerned, at any time during the period ending on the 123rd day after
         the date of such deposit.

                  (3)      [Reserved]

                  (4)      Such defeasance or covenant defeasance shall not
         result in a breach or violation of, or constitute a default under any
         material agreement or instrument (other than this Indenture) to which
         the Company is a party or by which it is bound.

                  (5)      In the case of an election under Section 1302, the
         Company shall have delivered to the Trustee an Opinion of Counsel
         stating that (x) the Company has received from, or there has been
         published by, the Internal Revenue Service a ruling, or (y) since
         January 15, 1998, there has been a change in the applicable federal
         income tax law, in either case to the effect, and based thereon such
         opinion shall confirm, that Holders will not recognize income, gain or
         loss for federal income tax purposes as a result of such defeasance and
         will be subject to federal income tax on the same amounts, in the same
         manner and at the same times as would have been the case if such
         defeasance had not occurred.

                  (6)      In the case of an election under Section 1303, the
         Company shall have delivered to the Trustee an Opinion of Counsel to
         the effect that the Holders will not recognize income, gain or loss for
         federal income tax purposes as a result of such


                                       81
<PAGE>   88

         covenant defeasance and will be subject to federal income tax on the
         same amounts, in the same manner and at the same times as would have
         been the case if such covenant defeasance had not occurred.

                  (7)      The Company shall have delivered to the Trustee an
         Officer's Certificate and an Opinion of Counsel, each stating that all
         conditions precedent provided for relating to either the defeasance
         under Section 1302 or the covenant defeasance under Section 1303 (as
         the case may be) have been complied with.

SECTION 1305.     Deposited Money and U.S. Government Obligations
                  to Be Held in Trust; Other Miscellaneous Provisions.

                  Subject to the provisions of the last paragraph of Section
1003, all money and U.S. Government Obligations (including the proceeds thereof)
deposited with the Trustee (or other qualifying trustee, collectively for
purposes of this Section 1305, the "Trustee") pursuant to Section 1304 in
respect of the Outstanding Notes shall be held in trust and applied by the
Trustee, in accordance with the provisions of such Notes and this Indenture, to
the payment, either directly or through any Paying Agent (including the Company
acting as its own Paying Agent) as the Trustee may determine, to the Holders of
such Notes of all sums due and to become due thereon in respect of principal
(and premium, if any) and interest, but such money need not be segregated from
other funds except to the extent required by law.

                  The Company shall pay and indemnify the Trustee against any
tax, fee or other charge imposed on or assessed against the U.S. Governmental
Obligations deposited pursuant to Section 1304 or the principal and interest
received in respect thereof other than any such tax, fee or other charge which
by law is for the account of the Holders.

                  Anything in this Article Thirteen to the contrary
notwithstanding, the Trustee shall deliver or pay to the Company from time to
time upon Company Request any money or U.S. Government Obligations held by it as
provided in Section 1304 which, in the opinion of a nationally recognized firm
of independent public accountants expressed in a written certification thereof
delivered to the Trustee, are in excess of the amount thereof which would then
be required to be deposited to effect an equivalent defeasance or covenant
defeasance, as applicable, in accordance with this Article.

SECTION 1306.     Reinstatement.

                  If the Trustee or any Paying Agent is unable to apply any
money in accordance with Section 1305 by reason of any order or judgment of any
court or governmental authority enjoining, restraining or otherwise prohibiting
such application, then the Company's obligations under this Indenture and the
Notes shall be revived and reinstated as though no deposit had occurred pursuant
to Section 1302 or 1303, as the case may be, until such time as the Trustee or
Paying Agent is permitted to apply all such money in accordance with Section
1305; provided, however, that if the Company makes any payment of principal of
(or premium, if any) or interest


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<PAGE>   89

on any Note following the reinstatement of its obligations, the Company shall be
subrogated to the rights of the Holders of such Notes to receive such payment
from the money held by the Trustee or Paying Agent.

                  This Indenture may be signed in any number of counterparts
each of which so executed shall be deemed to be an original, but all such
counterparts shall together constitute but one and the same Indenture.


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                  IN WITNESS WHEREOF, the parties hereto have caused this
Indenture to be duly executed as of the day and year first above written.


                                    WORLD ACCESS, INC.



                                    By:
                                       ----------------------------------------
                                    Name:
                                    Title:


                                    FIRST UNION NATIONAL BANK,
                                    Trustee



                                    By:
                                       ----------------------------------------
                                    Name:
                                    Title:


                                       84


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