BROOKS FIBER PROPERTIES INC
8-K, 1997-06-05
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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

                                    FORM 8-K

                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15 (D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                Date of Report (Date of earliest event reported):
                                  May 29, 1997

                          BROOKS FIBER PROPERTIES, INC.
- --------------------------------------------------------------------------------
               (Exact Name of Registrant as Specified in Charter)

                                    Delaware
- --------------------------------------------------------------------------------
                 (State or Other Jurisdiction of Incorporation)

                                     0-28036
- --------------------------------------------------------------------------------
                            (Commission File Number)

                                   43-1656187
- --------------------------------------------------------------------------------
                     (I.R.S. Employer Identification Number)

425 Woods Mill Road South, Suite 300, St. Louis, Missouri                63017
- --------------------------------------------------------------------------------
        (Address of Principal Executive Offices)                      (Zip Code)

              Registrant's telephone number, including area code:
                                 (314) 878-1616
<PAGE>

ITEM 5. OTHER EVENTS.

         On May 29, 1997, Brooks Fiber Properties, Inc., a Delaware corporation
(the "Registrant"), completed the issuance and sale of $250,000,000 of its 10%
Senior Notes due June 1, 2007 (the "Notes") in a private offering exempt from
the registration requirements of the Securities Act of 1933, as amended (the
"Act"), to Goldman, Sachs & Co., Salomon Brothers Inc and Merrill Lynch, Pierce,
Fenner & Smith Incorporated for resale of the Notes in accordance with Rule 144A
and Regulation S of the Act. The net proceeds from the sale of the Notes of
approximately $242.8 million will be used to (1) increase the geographic reach
and robustness of the Registrant's networks to allow the Registrant to serve a
significantly higher percentage of its markets by extending its networks to
serve most of the incumbent local exchange carrier's central offices in its
markets, (2) rapidly deploy switches with full capabilities for local dial tone
and switched access termination and origination services and (iii) add
electronics to provide other enhanced services, such as high speed video
conferencing, frame relay and ATM-based packet transport services and Internet
access products in all of its operating networks by the end of 1997. Pending
such utilization, the Registrant has invested such net proceeds in short-term,
interest-bearing U.S. government securities and other short-term, investment
grade securities.

         A copy of the Registrant's press release dated May 30, 1997, with
respect to the transaction described above, is attached hereto as Exhibit 99.1
and is incorporated herein by reference.


ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS.

Exhibit No.                         Description of Exhibit
- -----------  -------------------------------------------------------------------

4.1          Indenture dated as of May 29, 1997 between the Registrant and The
             Bank of New York, as Trustee.

4.2          Exchange and Registration Rights Agreement dated as of May 29, 1997
             by and between the Registrant and Goldman, Sachs & Co., Salomon
             Brothers Inc and Merrill Lynch, Pierce, Fenner & Smith
             Incorporated.

99.1         Press Release of the Registrant dated May 30, 1997.

                                        2
<PAGE>
                                    SIGNATURE

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

                                         BROOKS FIBER PROPERTIES, INC.

Date: June 2, 1997                       By: David L. Solomon
                                             -----------------------------------
                                             David L. Solomon
                                             Executive Vice President and 
                                             Chief Financial Officer
                                             (Principal Financial and Accounting
                                             Officer)

                                        3
<PAGE>
                                  EXHIBIT INDEX

Exhibit No.                        Description of Exhibit
- -----------  -------------------------------------------------------------------

4.1          Indenture dated as of May 29, 1997 between the Registrant and The
             Bank of New York, as Trustee.

4.2          Exchange and Registration Rights Agreement dated as of May 29, 1997
             by and between the Registrant and Goldman, Sachs & Co., Salomon
             Brothers Inc and Merrill Lynch, Pierce, Fenner & Smith
             Incorporated.

99.1         Press Release of the Registrant dated May 30, 1997.

                                        4

                                                                     EXHIBIT 4.1

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

                          BROOKS FIBER PROPERTIES, INC.

                                       TO

                              THE BANK OF NEW YORK
                                                                         Trustee

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

                                    Indenture

                            Dated as of May 29, 1997

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

                                  $250,000,000

                                10% SENIOR NOTES
                                DUE June 1, 2007

================================================================================
<PAGE>
                          BROOKS FIBER PROPERTIES, INC.

                 Certain Sections of this Indenture relating to
                         Sections 310 through 318 of the
                          Trust Indenture Act of 1939:

Trust Indenture                                                     Indenture
  Act Section                                                        Section
- ---------------                                                   --------------
Section 310(a)(1) ............................................... 609
           (a)(2) ............................................... 609
           (a)(3) ............................................... Not Applicable
           (a)(4) ............................................... Not Applicable
           (b)    ............................................... 608
                  ............................................... 610
Section 311(a)    ............................................... 613
           (b)    ............................................... 613
Section 312(a)    ............................................... 701 702(a)
           (b)    ............................................... 702(b)
           (c)    ............................................... 702(c)
Section 313(a)    ............................................... 703(a)
           (a)(4) ............................................... 703(a)
           (b)    ............................................... 703(a)
           (c)    ............................................... 703(a)
           (d)    ............................................... 703(b)
Section 314(a)    ............................................... 704 1018
           (b)    ............................................... Not Applicable
           (c)(1) ............................................... 102 
           (c)(2) ............................................... 102
           (c)(3) ............................................... Not Applicable
           (d)    ............................................... Not Applicable
           (e)    ............................................... 102
Section 315(a)    ............................................... 601
           (b)    ............................................... 602

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

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

                                      -i-
<PAGE>

Trust Indenture                                                     Indenture
  Act Section                                                        Section
- ---------------                                                   --------------

           (c)       ............................................ 601
           (d)       ............................................ 601
           (e)       ............................................ 514
Section 316(a)(1)(A) ............................................ 502 512
           (a)(1)(B) ............................................ 513
           (a)(2)    ............................................ Not Applicable
           (b)       ............................................ 508
           (c)       ............................................ 104
Section 317(a)(1)    ............................................ 503
           (a)(2)    ............................................ 504
           (b)       ............................................ 1003
Section 318(a)       ............................................ 107

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

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

                                      -ii-
<PAGE>
                                TABLE OF CONTENTS
                                                                            Page
                                                                            ----

Parties .......................................................................1
Recitals of the Company .......................................................1

                                   ARTICLE ONE
            Definitions and Other Provisions of General Application

SECTION 101. Definitions.......................................................1
         Act...................................................................2
         Acquired Debt.........................................................2
         Affiliate.............................................................2
         Agent Member..........................................................2
         Applicable Procedures.................................................3
         Asset Disposition.....................................................3
         Attributable Value....................................................3
         Board of Directors....................................................4
         Board Resolution......................................................4
         Business Day..........................................................4
         Capital Lease Obligation..............................................4
         Capital Stock.........................................................4
         Cedel.................................................................4
         Change of Control.....................................................4
         Commission............................................................4
         Common Stock..........................................................5
         Company...............................................................5
         Company Request" or "Company Order"...................................5
         Consolidated Capital Ratio............................................5
         Consolidated Cash Flow Available for Fixed Charges....................5
         Consolidated Income Tax Expense.......................................6
         Consolidated Interest Expense.........................................6
         Consolidated Net Income...............................................6
         Consolidated Net Worth................................................7
         Consolidated Tangible Assets..........................................7
         Continuing Director...................................................7
         Corporate Trust Office................................................7
         corporation...........................................................8
         Debt..................................................................8
         Defaulted Interest....................................................8
         Depositary............................................................8

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

         Note: This table of contents shall not, for any purpose, be deemed to
be a part of the Indenture.

                                     -iii-
<PAGE>

         Disqualified Stock....................................................9
         Eligible Institution..................................................9
         Euroclear.............................................................9
         Event of Default......................................................9
         Exchange Act..........................................................9
         Exchange Offer........................................................9
         Exchange Offer Registration Statement................................10
         Exchange Security....................................................10
         Global Security......................................................10
         Government Securities................................................10
         Guarantee............................................................10
         Guarantor............................................................10
         Holder...............................................................11
         Incur................................................................11
         Indenture............................................................11
         Interest Payment Date................................................11
         Interest Rate or Currency Protection Agreement.......................11
         Investment...........................................................11
         Joint Venture........................................................12
         Lien.................................................................12
         Marketable Securities................................................12
         Maturity.............................................................12
         Net Available Proceeds...............................................12
         Offer to Purchase....................................................13
         Officers' Certificate................................................16
         Opinion of Counsel...................................................16
         Original Securities..................................................16
         Outstanding..........................................................16
         Paying Agent.........................................................17
         Permitted Interest Rate or Currency Protection Agreement.............17
         Permitted Investment.................................................17
         Permitted Liens......................................................17
         Person...............................................................18
         Predecessor Security.................................................18
         Preferred Dividends..................................................18
         Preferred Stock......................................................18
         Purchase Agreement...................................................19
         Purchase Money Debt..................................................19
         Purchasers...........................................................19
         readily marketable cash equivalents..................................19
         Receivables..........................................................19

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

         Note: This table of contents shall not, for any purpose, be deemed to
be a part of the Indenture.

                                      -iv-
<PAGE>

         Receivables Sale.....................................................20
         Redemption Date......................................................20
         Redemption Price.....................................................20
         Registered Securities................................................20
         Regular Record Date..................................................20
         Regulation S.........................................................20
         Regulation S Certificate.............................................20
         Regulation S Global Security.........................................20
         Regulation S Legend..................................................20
         Regulation S Securities..............................................20
         Related Person.......................................................20
         Resale Registration Statement........................................21
         Responsible Officer..................................................21
         Restricted Global Security...........................................21
         Restricted Period....................................................21
         Restricted Securities................................................21
         Restricted Securities Certificate....................................21
         Restricted Securities Legend.........................................21
         Rule 144A............................................................22
         Rule 144A Securities.................................................22
         Sale and Leaseback Transaction.......................................22
         Second Step-Down Date................................................22
         Second Step-Up.......................................................22
         Secured Credit Facility..............................................22
         Securities...........................................................22
         Securities Act.......................................................22
         Securities Act Legend................................................23
         Security Register" and "Security Registrar"..........................23
         Special Interest.....................................................23
         Special Record Date..................................................23
         Stated Maturity......................................................23
         Step-Down Date.......................................................23
         Step-Up..............................................................23
         Strategic Equity Investment..........................................23
         Strategic Investor...................................................23
         Subordinated Debt....................................................23
         Subsidiary...........................................................24
         Successor Security...................................................25
         Telecommunications Assets............................................25
         Telecommunications Business..........................................25
         Trustee..............................................................25
         Trust Indenture Act..................................................25

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

         Note: This table of contents shall not, for any purpose, be deemed to
be a part of the Indenture.

                                      -v-
<PAGE>

         Unrestricted Securities Certificate..................................25
         Vice President.......................................................25
         Voting Stock.........................................................26
         Wholly-Owned Subsidiary..............................................26
SECTION 102. Compliance Certificates and Opinions.............................26
SECTION 103. Form of Documents Delivered to Trustee...........................27
SECTION 104. Acts of Holders; Record Dates....................................27
SECTION 105. Notices, Etc., to Trustee and Company............................30
SECTION 106. Notice to Holders; Waiver........................................31
SECTION 107. Application of Trust Indenture Act...............................31
SECTION 108. Effect of Headings and Table of Contents.........................32
SECTION 109. Successors and Assigns...........................................32
SECTION 110. Separability Clause..............................................32
SECTION 111. Benefits of Indenture............................................32
SECTION 112. Governing Law....................................................32
SECTION 113. Legal Holidays...................................................32

                                   ARTICLE TWO
                                 Security Forms

SECTION 201. Forms Generally..................................................33
SECTION 202. Form of Face of Security.........................................34
SECTION 203. Form of Reverse of Security......................................38
SECTION 204. Form of Trustee's Certificate of Authentication..................43

                                  ARTICLE THREE
                                 The Securities

SECTION 301. Title and Terms..................................................43
SECTION 302. Denominations....................................................44
SECTION 303. Execution, Authentication, Delivery and Dating...................45
SECTION 304. Temporary Securities.............................................46
SECTION 305. Registration, Registration of Transfer and Exchange..............46
SECTION 306. Mutilated, Destroyed, Lost and Stolen Securities.................52
SECTION 307. Payment of Interest; Interest Rights Preserved...................53
SECTION 308. Persons Deemed Owners............................................55
SECTION 309. Cancellation.....................................................55

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

         Note: This table of contents shall not, for any purpose, be deemed to
be a part of the Indenture.

                                      -vi-
<PAGE>

SECTION 310. Computation of Interest..........................................55
SECTION 311. CUSIP and ISIN Numbers

                                  ARTICLE FOUR
                           Satisfaction and Discharge

SECTION 401. Satisfaction and Discharge of Indenture..........................56
SECTION 402. Application of Trust Money.......................................57

                                  ARTICLE FIVE
                                    Remedies

SECTION 501. Events of Default................................................58
SECTION 502. Acceleration of Maturity; Rescission and Annulment...............60
SECTION 503. Collection of Indebtedness and Suits for Enforcement by Trustee..61
SECTION 504. Trustee May File Proofs of Claim.................................62
SECTION 505. Trustee May Enforce Claims Without Possession of Securities......63
SECTION 506. Application of Money Collected...................................63
SECTION 507. Limitation on Suits..............................................63
SECTION 508. Unconditional Right of Holders to Receive Principal, Premium and
             Interest.........................................................64
SECTION 509. Restoration of Rights and Remedies...............................65
SECTION 510. Rights and Remedies Cumulative...................................65
SECTION 511. Delay or Omission Not Waiver.....................................65
SECTION 512. Control by Holders...............................................65
SECTION 513. Waiver of Past Defaults..........................................66
SECTION 514. Undertaking for Costs............................................66
SECTION 515. Waiver of Stay or Extension Laws.................................67

                                   ARTICLE SIX
                                  The Trustee

SECTION 601. Certain Duties and Responsibilities..............................67
SECTION 602. Notice of Defaults...............................................68
SECTION 603. Certain Rights of Trustee........................................69
SECTION 604. Not Responsible for Recitals or Issuance of Securities...........70
SECTION 605. May Hold Securities..............................................71
SECTION 606. Money Held in Trust..............................................71
SECTION 607. Compensation and Reimbursement...................................71
SECTION 608. Disqualification; Conflicting Interests..........................72
SECTION 609. Corporate Trustee Required; Eligibility..........................72

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

         Note: This table of contents shall not, for any purpose, be deemed to
be a part of the Indenture.

                                     -vii-
<PAGE>

SECTION 610. Resignation and Removal; Appointment of Successor................73
SECTION 611. Acceptance of Appointment by Successor...........................74
SECTION 612. Merger, Conversion, Consolidation or Succession to Business......75
SECTION 613. Preferential Collection of Claims Against Company ...............75
SECTION 614. Appointment of Authenticating Agent..............................75

                                  ARTICLE SEVEN
               Holders' Lists and Reports by Trustee and Company

SECTION 701. Company to Furnish Trustee Names and Addresses of Holder.........77
SECTION 702. Preservation of Information; Communications to Holders...........78
SECTION 703. Reports by Trustee...............................................78
SECTION 704. Reports by Company...............................................79
SECTION 705. Officers' Certificate with Respect to Change in Interest Rate....79

                                  ARTICLE EIGHT
                          Merger, Consolidation, Etc.

SECTION 801. Mergers, Consolidations and Certain Sales of Assets..............80
SECTION 802. Successor Substituted............................................81

                                  ARTICLE NINE
                            Supplemental Indentures

SECTION 901. Supplemental Indentures Without Consent of Holders...............82
SECTION 902. Supplemental Indentures with Consent of Holders..................83
SECTION 903. Execution of Supplemental Indentures.............................84
SECTION 904. Effect of Supplemental Indentures................................84
SECTION 905. Conformity with Trust Indenture Act..............................84
SECTION 906. Reference in Securities to Supplemental Indentures...............84

                                   ARTICLE TEN
                                    Covenants

SECTION 1001. Payment of Principal, Premium and Interest......................85

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

         Note: This table of contents shall not, for any purpose, be deemed to
be a part of the Indenture.

                                     -viii-
<PAGE>

SECTION 1002. Maintenance of Office or Agency.................................85
SECTION 1003. Money for Security Payments to be Held in Trust.................86
SECTION 1004. Existence.......................................................87
SECTION 1005. Maintenance of Properties.......................................88
SECTION 1006. Payment of Taxes and Other Claims...............................88
SECTION 1007. Maintenance of Insurance........................................88
SECTION 1008. Limitation on Consolidated Debt.................................89
SECTION 1009. Limitation on Debt and Preferred Stock of Subsidiaries..........91
SECTION 1010. Limitation on Restricted Payments...............................93
SECTION 1011. Limitation on Dividend and Other Payment Restrictions Affecting 
              Subsidiaries....................................................94
SECTION 1012. Limitation on Transactions with Affiliates and Related Persons..95
SECTION 1013. Limitation on Asset Dispositions................................96
SECTION 1014. Limitation on Issuances and Sales of Capital Stock of 
              Subsidiaries....................................................98
SECTION 1015. Limitation on Liens.............................................99
SECTION 1016. Limitation on Sale and Leaseback Transactions..................100
SECTION 1017. Change of Control..............................................100
SECTION 1018. Provision of Financial Information.............................102
SECTION 1019. Statement by Officers as to Default............................102
SECTION 1020. Waiver of Certain Covenants....................................102

                                 ARTICLE ELEVEN
                            Redemption of Securities

SECTION 1101. Right of Redemption............................................103
SECTION 1102. Applicability of Article.......................................104
SECTION 1103. Election to Redeem; Notice to Trustee..........................104
SECTION 1104. Securities to Be Redeemed Pro Rata.............................104
SECTION 1105. Notice of Redemption...........................................105
SECTION 1106. Deposit of Redemption Price....................................106
SECTION 1107. Securities Payable on Redemption Date..........................106
SECTION 1108. Securities Redeemed in Part....................................106

                                 ARTICLE TWELVE
                       Defeasance and Covenant Defeasance

SECTION 1201. Company's Option to Effect Defeasance or Covenant Defeasance...107
SECTION 1202. Defeasance and Discharge.......................................107
SECTION 1203. Covenant Defeasance............................................108
SECTION 1204. Conditions to Defeasance or Covenant Defeasance................108

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

         Note: This table of contents shall not, for any purpose, be deemed to
be a part of the Indenture.

                                      -ix-
<PAGE>

SECTION 1205. Deposited Money and U.S. Government Obligations to Be Held 
              in Trust; Other Miscellaneous Provisions.......................111

TESTIMONIUM..................................................................116

SIGNATURES AND SEALS.........................................................116

ACKNOWLEDGMENTS..............................................................117

ANNEX A -- Form of Regulation S Certificate 
ANNEX B -- Form of Restricted Securities Certificate 
ANNEX C -- Form of Unrestricted Securities Certificate

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

         Note: This table of contents shall not, for any purpose, be deemed to
be a part of the Indenture.

                                      -x-
<PAGE>

     INDENTURE, dated as of May 29, 1997, between Brooks Fiber Properties, Inc.,
a corporation duly organized and existing under the laws of the State of
Delaware (herein called the "Company"), having its principal office at 425 Woods
Mill Road South, Suite 300, Town and Country, Missouri 63017, and The Bank of
New York, duly organized and existing under the laws of the State of New York,
as Trustee (herein called the "Trustee").

                             RECITALS OF THE COMPANY

     The Company has duly authorized the creation of an issue of $250,000,000
aggregate principal amount of its 10% Senior Notes due June 1, 2007 (the
"Securities") 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. The Securities may consist of Original Securities and/or
Exchange Securities, each as defined herein. The Original Securities and the
Exchange Securities shall rank pari passu.

     All things necessary to make the Securities, 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, have been done.

     NOW, THEREFORE, THIS INDENTURE WITNESSETH:

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

                                   ARTICLE ONE
                        Definitions and Other Provisions
                             of General Application

SECTION 101. Definitions.

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

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

          (2) 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;

          (3) all accounting terms not otherwise defined herein have the
     meanings assigned to them in accordance with generally accepted accounting
     principles (whether or not such is indicated herein) and, except as
     otherwise herein expressly provided, the term "generally accepted
     accounting principles" with respect to any computation required or
     permitted hereunder shall mean such accounting principles as are generally
     accepted as consistently applied by the Company at the date of such
     computation; and

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

     Certain terms, used principally in Article Six, are defined in that
Article. "Act", when used with respect to any Holder, has the meaning specified
in Section 104.

     "Acquired Debt" means, with respect to any specified Person, (i) Debt of
any other Person existing at the time such Person merges with or into or
consolidates with or becomes a Subsidiary of such specified Person and (ii) Debt
secured by a Lien encumbering any asset acquired by such specified Person, which
Debt was not Incurred in anticipation of, and was outstanding prior to, such
merger, consolidation or acquisition.

     "Affiliate" of any Person means any other Person directly or indirectly
controlling or controlled by or under direct or indirect common control with
such Person. For the purposes of this definition, "control" when used with 
respect to any Person means the power to direct the management and policies of
such Person, directly or indirectly, whether

                                       -2-
<PAGE>

through the ownership of voting securities, by contract or otherwise; and the
terms "controlling" and "controlled" have meanings correlative to the foregoing.

     "Agent Member" means any member of, or participant in, the Depositary.

     "Applicable Procedures" means, with respect to any transfer or transaction
involving a Global Security or beneficial interest therein, the rules and
procedures of the Depositary for such Security, Euroclear and Cedel, in each
case to the extent applicable to such transaction and as in effect from time to
time.

     "Asset Disposition" by any Person means any transfer, conveyance, sale,
lease or other disposition by such Person or any of its Subsidiaries (including
a consolidation or merger or other sale of any such Subsidiary with, into or to
another Person in a transaction in which such Subsidiary ceases to be a
Subsidiary of the specified Person, but excluding a disposition by a Subsidiary
of such Person to such Person or a Wholly-Owned Subsidiary of such Person or by
such Person to a Wholly-Owned Subsidiary of such Person) of (i) shares of
Capital Stock or other ownership interests of a Subsidiary of such Person (other
than as permitted by the provisions of Section 1009 of this Indenture), (ii)
substantially all of the assets of such Person or any of its Subsidiaries
representing a division or line of business (other than as part of a Permitted
Investment) or (iii) other assets or rights of such Person or any of its
Subsidiaries outside of the ordinary course of business, provided in each case
that the aggregate consideration for such transfer, conveyance, sale, lease or
other disposition is equal to $2.0 million or more in any 12-month period.

     "Attributable Value" means, as to any particular lease under which any
Person is at the time liable other than a Capital 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 initial term
thereof as determined in accordance with generally accepted accounting
principles, discounted from the last date of such initial term to the date of
determination at a rate per annum equal to the discount rate which would be
applicable to a Capital Lease Obligation with like term in accordance with
generally accepted accounting principles. The net amount of rent required to be
paid under

                                      -3-
<PAGE>

any such 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. In the case of any lease which is terminable by the
lessee upon the payment of penalty, such net amount shall also include the
lesser of the amount of such penalty (in which case no rent shall be considered
as required to be paid under such lease subsequent to the first date upon which
it may be so terminated) or the rent which would otherwise be required to be
paid if such lease is not so terminated. "Attributable Value" means, as to a
Capital Lease Obligation, the principal amount thereof.

     "Board of Directors" means either the board of directors of the Company or
any duly authorized committee of that board.

     "Board Resolution" means a copy of a resolution certified by the Secretary
or an 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 Borough of Manhattan,
The City of New York, New York are authorized or obligated by law or executive
order to close.

     "Capital Lease Obligation" of any Person means the obligation to pay rent
or other payment amounts under a lease of (or other Debt arrangements conveying
the right to use) real or personal property of such Person which is required to
be classified and accounted for as a capital lease or a liability on the face of
a balance sheet of such Person in accordance with generally accepted accounting
principles (a "Capital Lease"). The stated maturity of such obligation shall be
the date of the last payment of rent or any other amount due under such lease
prior to the first date upon which such lease may be terminated by the lessee
without payment of a penalty. The principal amount of such obligation shall be
the capitalized amount thereof that would appear on the face of a balance sheet
of such Person in accordance with generally accepted accounting principles.

                                      -4-
<PAGE>

     "Capital Stock" of any Person means any and all shares, interests,
participations or other equivalents (however designated) of corporate stock or
other equity participations, including partnership interests, whether general or
limited, of such Person.

     "Cedel" means Cedel Bank, S.A. (or any successor securities clearing
agency).

     "Change of Control" has the meaning specified in Section 1017.

     "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 instrument 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" of any Person means Capital Stock of such Person that does
not rank prior, as to the payment of dividends or as to the distribution of
assets upon any voluntary or involuntary liquidation, dissolution or winding up
of such Person, to shares of Capital Stock of any other class of such Person;
provided that for purposes of a Strategic Equity Investment, Common Stock shall
include Capital Stock (other than Disqualified Stock) that is convertible into
or exchangeable for shares of the Company's Common Stock.

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

     "Company Request" or "Company Order" means a written request or order
signed in the name of the Company by its Chairman of the Board, its Vice
Chairman of the Board, its President or a Vice President, and by its Treasurer,
an Assistant Treasurer, its Secretary or an Assistant Secretary, and delivered
to the Trustee.

     "Consolidated Capital Ratio" of any Person as of any date means the ratio
of (i) the aggregate consolidated

                                      -5-
<PAGE>

principal amount of Debt of such Person then outstanding to (ii) the aggregate
consolidated paid-in capital of such Person as of such date.

     "Consolidated Cash Flow Available for Fixed Charges" for any period means
the Consolidated Net Income of the Company and its Subsidiaries for such period
increased by the sum of (i) Consolidated Interest Expense of the Company and its
Subsidiaries for such period, plus (ii) Consolidated Income Tax Expense of the
Company and its Subsidiaries for such period, plus (iii) the consolidated
depreciation and amortization expense included in the income statement of the
Company and its Subsidiaries for such period, plus (iv) any non-cash expense
related to the issuance to employees of the Company or any Subsidiary of the
Company of options to purchase Capital Stock of the Company or such Subsidiary,
plus (v) any charge related to any premium or penalty paid in connection with
redeeming or retiring any Indebtedness prior to its stated maturity; provided,
however, that there shall be excluded therefrom the Consolidated Cash Flow
Available for Fixed Charges (if positive) of any Subsidiary of the Company
(calculated separately for such Subsidiary in the same manner as provided above
for the Company) that is subject to a restriction which prevents the payment of
dividends or the making of distributions to the Company or another Subsidiary of
the Company to the extent of such restriction.

     "Consolidated Income Tax Expense" for any period means the aggregate
amounts of the provisions for income taxes of the Company and its Subsidiaries
for such period calculated on a consolidated basis in accordance with generally
accepted accounting principles.

     "Consolidated Interest Expense" means for any period the interest expense
included in a consolidated income statement (excluding interest income) of the
Company and its Subsidiaries for such period in accordance with generally
accepted accounting principles, including without limitation or duplication (or,
to the extent not so included, with the addition of), (i) the amortization of
Debt discounts; (ii) any payments or fees with respect to letters of credit,
bankers' acceptances or similar facilities; (iii) fees with respect to interest
rate swap or similar agreements or foreign currency hedge, exchange or

                                      -6-
<PAGE>

similar agreements; (iv) Preferred Stock dividends of the Company and its
Subsidiaries (other than dividends paid in shares of Preferred Stock that is not
Disqualified Stock) declared and paid or payable; (v) accrued Disqualified Stock
dividends of the Company and its Subsidiaries, whether or not declared or paid;
(vi) interest on Debt guaranteed by the Company and its Subsidiaries; and (vii)
the portion of any Capital Lease Obligation paid during such period that is
allocable to interest expense.

     "Consolidated Net Income" for any period means the net income (or loss) of
the Company and its Subsidiaries for such period determined on a consolidated
basis in accordance with generally accepted accounting principles; provided that
there shall be excluded therefrom (a) the net income (or loss) of any Person
acquired by the Company or a Subsidiary of the Company in a pooling-of-interests
transaction for any period prior to the date of such transaction, (b) the net
income (or loss) of any Person that is not a Subsidiary of the Company except to
the extent of the amount of dividends or other distributions actually paid to
the Company or a Subsidiary of the Company by such Person during such period,
(c) gains or losses on Asset Dispositions by the Company or its Subsidiaries,
(d) all extraordinary gains and extraordinary losses, determined in accordance
with generally accepted accounting principles, (e) the cumulative effect of
changes in accounting principles, (f) non-cash gains or losses resulting from
fluctuations in currency exchange rates and (g) the tax effect of any of the
items described in clauses (a) through (f) above; provided, further, that for
purposes of any determination pursuant to the provisions of Section 1010 of this
Indenture, there shall further be excluded therefrom the net income (but not net
loss) of any Subsidiary of the Company that is subject to a restriction which
prevents the payment of dividends or the making of distributions to the Company
or another Subsidiary of the Company to the extent of such restriction.

     "Consolidated Net Worth" of any Person means the stockholders' equity of
such Person, determined on a consolidated basis in accordance with generally
accepted accounting principles, less amounts attributable to Disqualified Stock
of such Person; provided that, with respect to the Company, adjustments
following the date of this Indenture to the accounting books and records of the

                                      -7-
<PAGE>

Company in accordance with Accounting Principles Board Opinions Nos. 16 and 17
(or successor opinions thereto) or otherwise resulting from the acquisition of
control of the Company by another Person shall not be given effect to.

     "Consolidated Tangible Assets" of any Person means the total amount of
assets (less applicable reserves and other properly deductible items) which
under generally accepted accounting principles would be included on a
consolidated balance sheet of such Person and its Subsidiaries after deducting
therefrom all goodwill, trade names, trademarks, patents, unamortized debt
discount and expense and other like intangibles, which in each case under
generally accepted accounting principles would be included on such consolidated
balance sheet.

     "Continuing Director" means, as of any date of determination, any member of
the Board of Directors of the Company who (i) was a member of such Board of
Directors of the Company on the date of this Indenture or (ii) was nominated for
election or elected to the Board of Directors of the Company with the
affirmative vote of a majority of the Continuing Directors who were members of
the Board of Directors of the Company at the time of such nomination or
election.

     "Corporate Trust Office" means the principal office of the Trustee in the
Borough of Manhattan, The City of New York, New York, at which at any particular
time its corporate trust business shall be administered, which at the date
hereof is located at 101 Barclay Street, 21-W, New York, New York 10286.
"corporation" means a corporation, association, company, limited liability
company, joint-stock company or business trust.

     "Debt" means (without duplication), with respect to any Person, whether
recourse is to all or a portion of the assets of such Person and whether or not
contingent, (i) every obligation of such Person for money borrowed, (ii) every
obligation of such Person evidenced by bonds, debentures, notes or other similar
instruments, including obligations Incurred in connection with the acquisition
of property, assets or businesses, (iii) every reimbursement obligation of such
Person with respect to letters of credit, bankers' acceptances or similar
facilities issued for the

                                      -8-
<PAGE>

account of such Person, (iv) every obligation of such Person issued or assumed
as the deferred purchase price of property or services (including securities
repurchase agreements but excluding trade accounts payable or accrued
liabilities arising in the ordinary course of business which are not overdue or
which are being contested in good faith), (v) every Capital Lease Obligation of
such Person, (vi) all Receivables Sales of such Person, together with any
obligation of such Person to pay any discount, interest, fees, indemnities,
penalties, recourse, expenses or other amounts in connection therewith, (vii)
all obligations to redeem Disqualified Stock issued by such Person, (viii) every
obligation under Interest Rate and Currency Protection Agreements of such Person
and (ix) every obligation of the type referred to in clauses (i) through (viii)
of another Person and all dividends of another Person the payment of which, in
either case, such Person has Guaranteed. The "amount" or "principal amount" of
Debt at any time of determination as used herein represented by (a) any Debt
issued at a price that is less than the principal amount at maturity thereof,
shall be the amount of the liability in respect thereof determined in accordance
with generally accepted accounting principles, (b) any Receivables Sale shall be
the amount of the unrecovered capital or principal investment of the purchaser
(other than the Company or a Wholly-Owned Subsidiary of the Company) thereof,
excluding amounts representative of yield or interest earned on such investment
or (c) any Disqualified Stock shall be the maximum fixed redemption or
repurchase price in respect thereof.

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

     "Depositary" means, with respect to the Securities issuable or issued in
whole or in part in the form of one or more Global Securities, The Depository
Trust Company for so long as it shall be a clearing agency registered under the
Exchange Act, or such successor as the Company shall designate from time to
time in an Officers' Certificate delivered to the Trustee.

     "Disqualified Stock" of any Person means any Capital Stock of such Person
which, by its terms (or by the terms of any security into which it is
convertible or for which it is exchangeable), or upon the happening of any

                                      -9-
<PAGE>

event, matures or is mandatorily redeemable, pursuant to a sinking fund
obligation or otherwise, or is redeemable at the option of such Person, any
Subsidiary of such Person or the holder thereof, in whole or in part, on or
prior to the final Stated Maturity of the Securities, provided, however, that
any Preferred Stock which would not constitute Disqualified Stock but for
provisions thereof giving holders thereof the right to require the Company to
repurchase or redeem such Preferred Stock upon the occurrence of a Change of
Control occurring prior to the final maturity of the Securities shall not
constitute Disqualified Stock if the change of control provisions applicable to
such Preferred Stock are no more favorable to the holders of such Preferred
Stock than the provisions applicable to the Securities in Section 1017 of this
Indenture and such Preferred Stock specifically provides that the Company will
not repurchase or redeem any such stock pursuant to such provisions prior to the
Company's repurchase of such Securities as are required to be repurchased
pursuant to the provisions of Section 1017 of this Indenture.

     "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, whose debt is rated "A" (or higher) according to Standard &
Poor's Ratings Service or Moody's Investors Service, Inc. at the time as of
which any investment or rollover therein is made.

     "Euroclear" means the Euroclear Clearance System (or any successor
securities clearing agency).

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

     "Exchange Act" means the Securities Exchange Act of 1934 (and any statute
successor thereto) as amended, and the rules and regulations thereunder.

     "Exchange Offer" has the meaning set forth in the form of the Securities
contained in Section 202.

     "Exchange Offer Registration Statement" has the meaning set forth in the
form of the Securities contained in Section 202.

                                      -10-
<PAGE>

     "Exchange Security" means any Security issued in exchange for an Original
Security or Original Securities pursuant to the Exchange Offer or otherwise
registered under the Securities Act and any Security with respect to which the
next preceding Predecessor Security of such Security was an Exchange Security.

     "Global Security" means the security or securities that evidences all or
part of the Securities and bears the legend set forth in Section 202.

     "Government Securities" means direct obligations of, or obligations
guaranteed by, the United States of America for the payment of which guarantee
or obligations the full faith and credit of the United States is pledged and
which have a remaining weighted average life to maturity of not less than one
year from the date of Investment therein.

     "Guarantee" by any Person means any obligation, contingent or otherwise, of
such Person guaranteeing, or having the economic effect of guaranteeing, any
Debt of any other Person (the "primary obligor") in any manner, whether directly
or indirectly, and including, without limitation, any obligation of such Person,
(i) to purchase or pay (or advance or supply funds for the purchase or payment
of) such Debt or to purchase (or to advance or supply funds for the purchase of)
any security for the payment of such Debt, (ii) to purchase property, securities
or services for the purpose of assuring the holder of such Debt of the payment
of such Debt, or (iii) to maintain working capital, equity capital or other
financial statement condition or liquidity of the primary obligor so as to
enable the primary obligor to pay such Debt (and "Guaranteed" and "Guaranteeing"
shall have meanings correlative to the foregoing); provided, however, that the
Guarantee by any Person shall not include endorsements by such Person for
collection or deposit, in either case, in the ordinary course of business.

     "Guarantor" means a Subsidiary of the Company that has unconditionally
guaranteed, by supplemental indenture in form satisfactory to the Trustee, the
payment in full of the principal of (and premium, if any) and interest on the
Securities.

                                      -11-
<PAGE>

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

     "Incur" means, with respect to any Debt or other obligation of any Person,
to create, issue, incur (by conversion, exchange or otherwise), assume,
Guarantee or otherwise become liable in respect of such Debt or other obligation
including by acquisition of Subsidiaries or the recording, as required pursuant
to generally accepted accounting principles or otherwise, of any such Debt or
other obligation on the balance sheet of such Person (and "Incurrence",
"Incurred", "Incurrable" and "Incurring" shall have meanings correlative to the
foregoing); provided, however, that a change in generally accepted accounting
principles that results in an obligation of such Person that exists at such time
becoming Debt shall not be deemed an Incurrence of such Debt and that neither
the accrual of interest nor the accretion of original issue discount shall be
deemed an Incurrence of Debt.

     "Indenture" means this instrument as originally executed or as it may from
time to time be supplemented or amended by one or more indentures supplemental
hereto entered into pursuant to the applicable provisions hereof.

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

     "Interest Rate or Currency Protection Agreement" of any Person means any
forward contract, futures contract, swap, option or other financial agreement or
arrangement (including, without limitation, caps, floors, collars and similar
agreements) relating to, or the value of which is dependent upon, interest rates
or currency exchange rates or indices.

     "Investment" by any Person means any direct or indirect loan, advance or
other extension of credit or capital contribution (by means of transfers of cash
or other property to others or payments for property or services for the account
or use of others, or otherwise), to, or purchase or acquisition of Capital
Stock, bonds, notes, debentures or other securities or evidence of Debt issued
by, any other Person, including any payment on a Guarantee of any obligation of
such other Person, but excluding any loan,

                                      -12-
<PAGE>

advance or extension of credit to an employee of the Company or any of its
Subsidiaries in the ordinary course of business and commercially reasonable
extensions of trade credit.

     "Joint Venture" means a corporation, partnership or other entity engaged in
one or more Telecommunications Businesses in which the Company owns, directly or
indirectly, a 45% or greater interest, with the balance of the ownership
interests being held by one or more Strategic Investors.

     "Lien" means, with respect to any property or assets, any mortgage or deed
of trust, pledge, hypothecation, assignment, Receivables Sale, deposit
arrangement, security interest, lien, charge, easement (other than any easement
not materially impairing usefulness), encumbrance, preference, priority or other
security agreement or preferential arrangement of any kind or nature whatsoever
on or with respect to such property or assets (including, without limitation,
any conditional sale or other title retention agreement having substantially the
same economic effect as any of the foregoing).

     "Marketable Securities" means: (i) Government Securities; (ii) any
certificate of deposit maturing not more than 270 days after the date of
acquisition issued by, or time deposit of, an Eligible Institution; (iii)
commercial paper maturing not more than 270 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 "A-1" (or higher)
according to Standard & Poor's Ratings Service or "P-1" (or higher) according to
Moody's Investor Service, Inc.; (iv) any banker's acceptances or money market
deposit accounts issued or offered by an Eligible Institution; and (v) any fund
investing exclusively in investments of the types described in clauses (i)
through (iv) above.

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

     "Net Available Proceeds" from any Asset Disposition by any Person means
cash or readily marketable cash equivalents received (including amounts received

                                      -13-
<PAGE>

by way of sale or discounting of any note, installment receivable or other
receivable, but excluding any other consideration received in the form of
assumption by the acquiror of Debt or other obligations relating to such
properties or assets) therefrom by such Person, net of (i) all legal, title and
recording tax expenses, commissions and other fees and expenses Incurred and all
federal, state, provincial, foreign and local taxes required to be accrued as a
liability as a consequence of such Asset Disposition, (ii) all payments made by
such Person or its Subsidiaries on any Debt which is secured by such assets in
accordance with the terms of any Lien upon or with respect to such assets or
which must by the terms of such Lien, or in order to obtain a necessary consent
to such Asset Disposition or by applicable law, be repaid out of the proceeds
from such Asset Disposition, (iii) all distributions and other payments made to
minority interest holders in Subsidiaries of such Person or Joint Ventures as a
result of such Asset Disposition and (iv) appropriate amounts to be provided by
such Person or any Subsidiary thereof, as the case may be, as a reserve in
accordance with generally accepted accounting principles against any liabilities
associated with such assets and retained by such Person or any Subsidiary
thereof, as the case may be, after such Asset Disposition, including, without
limitation, liabilities under any indemnification obligations and severance and
other employee termination costs associated with such Asset Disposition, in each
case as determined by the Board of Directors of such Person, in its reasonable
good faith judgment evidenced by a Board Resolution filed with the Trustee;
provided, however, that any reduction in such reserve within twelve months
following the consummation of such Asset Disposition will be treated for all
purposes of this Indenture and the Securities as a new Asset Disposition at the
time of such reduction with Net Available Proceeds equal to the amount of such
reduction.

     "Offer to Purchase" means a written offer (the "Offer") sent by the Company
by first class mail, postage prepaid, to each Holder at its address appearing in
the Security Register on the date of the Offer offering to purchase up to the
principal amount of Securities specified in such Offer at the purchase price
specified in such Offer (as determined pursuant to this Indenture). Unless
otherwise

                                      -14-
<PAGE>

required by applicable law, the Offer shall specify an expiration date (the
"Expiration Date") of the Offer to Purchase which shall be, subject to any
contrary requirements of applicable law, not less than 30 days or more than 60
days after the date of such Offer and a settlement date (the "Purchase Date")
for the purchase of Securities within five Business Days after the Expiration
Date. The Company shall notify the Trustee at least 15 Business Days (or such
shorter period as is acceptable to the Trustee) prior to the mailing of the
Offer of the Company's obligation to make an Offer to Purchase, and the Offer
shall be mailed by the Company or, at the Company's request, by the Trustee in
the name and at the expense of the Company. The Offer shall contain information
concerning the business of the Company and its Subsidiaries which the Company in
good faith believes will enable such Holders to make an informed decision with
respect to the Offer to Purchase (which at a minimum will include (i) the most
recent annual and quarterly financial statements and "Management's Discussion
and Analysis of Financial Condition and Results of Operations" contained in the
documents required to be filed with the Trustee pursuant to this Indenture
(which requirements may be satisfied by delivery of such documents together with
the Offer), (ii) a description of material developments in the Company's
business subsequent to the date of the latest of such financial statements
referred to in clause (i) (including a description of the events requiring the
Company to make the Offer to Purchase), (iii) if applicable, appropriate pro
forma financial information concerning the Offer to Purchase and the events
requiring the Company to make the Offer to Purchase and (iv) any other
information required by applicable law to be included therein). The Offer shall
contain all instructions and materials necessary to enable such Holders to
tender Securities pursuant to the Offer to Purchase. The Offer shall also state:

          (a) the Section of this Indenture pursuant to which the Offer to
     Purchase is being made;

          (b) the Expiration Date and the Purchase Date;

          (c) the aggregate principal amount of the Outstanding Securities
     offered to be purchased by the Company pursuant to the Offer to Purchase
     (including, if less than 100%, the manner by which such has been determined

                                      -15-
<PAGE>

     pursuant to the Section hereof requiring the Offer to Purchase) (the 
     "Purchase Amount");

          (d) the purchase price to be paid by the Company for each $1,000
     aggregate principal amount of Securities accepted for payment (as specified
     pursuant to this Indenture) (the "Purchase Price");

          (e) that the Holder may tender all or any portion of the Securities
     registered in the name of such Holder and that any portion of a Security
     tendered must be tendered in an integral multiple of $1,000 principal
     amount;

          (f) the place or places where Securities are to be surrendered for
     tender pursuant to the Offer to Purchase;

          (g) that interest on any Security not tendered or tendered but not
     purchased by the Company pursuant to the Offer to Purchase will continue to
     accrue;

          (h) that on the Purchase Date the Purchase Price will become due and
     payable upon each Security being accepted for payment pursuant to the Offer
     to Purchase and that interest thereon shall cease to accrue on and after
     the Purchase Date;

          (i) that each Holder electing to tender a Security pursuant to the
     Offer to Purchase will be required to surrender such Security at the place
     or places specified in the Offer prior to the close of business on the
     Expiration Date (such Security being, if the Company or the Trustee so
     requires, duly endorsed by, or accompanied by a written instrument of
     transfer in form satisfactory to the Company and the Trustee duly executed
     by, the Holder thereof or his attorney duly authorized in writing);

          (j) that Holders will be entitled to withdraw all or any portion of
     Securities tendered if the Company (or its Paying Agent) receives, not
     later than the close of business on the Expiration Date, a facsimile
     transmission or letter setting forth the name of the holder, the principal
     amount of the Security the Holder tendered, the certificate number of the
     Security the Holder tendered and a statement that such Holder is
     withdrawing all or a portion of its tender;

                                      -16-
<PAGE>

          (k) that (a) if Securities in an aggregate principal amount less than
     or equal to the Purchase Amount are duly tendered and not withdrawn
     pursuant to the Offer to Purchase, the Company shall purchase all such
     Securities and (b) if Securities in an aggregate principal amount in excess
     of the Purchase Amount are tendered and not withdrawn pursuant to the Offer
     to Purchase, the Company shall purchase Securities having an aggregate
     principal amount equal to the Purchase Amount on a pro rata basis (with
     such adjustments as may be deemed appropriate so that only Securities in
     denominations of $1,000 or integral multiples thereof shall be purchased);
     and

          (l) that in the case of any Holder whose Security is purchased only in
     part, the Company shall execute, and the Trustee shall authenticate and
     deliver to the Holder of such Security without service charge, a new
     Security or Securities, of any authorized denomination as requested by such
     Holder, in an aggregate principal amount equal to and in exchange for the
     unpurchased portion of the Security so tendered.

Any Offer to Purchase shall be governed by and effected in accordance with the
Offer for such Offer to Purchase.

     "Officers' Certificate" means a certificate signed by the Chairman of the
Board, a Vice Chairman of the Board, the President or a Vice President, and by
the Treasurer, an Assistant Treasurer, the Secretary or an Assistant Secretary,
of the Company, and delivered to the Trustee and containing the statements
provided for in Section 102. One of the officers signing an Officers'
Certificate given pursuant to Section 1019 shall be the principal executive,
financial or accounting officer of the Company.

     "Opinion of Counsel" means a written opinion of legal counsel, who may be
counsel for the Company, and who shall be acceptable to the Trustee, and
containing the statements provided for in Section 102.

     "Original Securities" means all Securities other than Exchange Securities.

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

                                      -17-
<PAGE>

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

          (ii) Securities 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 Securities; provided that, if such Securities 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;
     and

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

provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, Securities owned
by the Company or any other obligor upon the Securities or any Affiliate of the
Company or of such other obligor shall be disregarded and deemed not to be
Outstanding, except that, in determining whether the Trustee shall be protected
in relying upon any such request, demand, authorization, direction, notice,
consent or waiver, only Securities which the Trustee knows to be so owned shall
be so disregarded. Securities 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 Securities and that
the pledgee is not the Company or any other obligor upon the Securities or any
Affiliate of the Company or of such other obligor.

     "Paying Agent" means any Person authorized by the Company to pay the
principal of (and premium, if any) or interest on any Securities on behalf of
the Company.

                                      -18-

<PAGE>

     "Permitted Interest Rate or Currency Protection Agreement" of any Person
means any Interest Rate or Currency Protection Agreement entered into with one
or more financial institutions in the ordinary course of business that is
designed to protect such Person against fluctuations in interest rates or
currency exchange rates with respect to Debt Incurred and which shall have a
notional amount no greater than the payments due with respect to the Debt being
hedged thereby and not for purposes of speculation.

     "Permitted Investment" means (i) any Investment in a Joint Venture
(including the purchase or acquisition of any Capital Stock of a Joint Venture),
provided the aggregate amount of all Investments pursuant to this clause (i) in
Joint Ventures in which the Company owns, directly or indirectly, a less than
50% interest shall not exceed $25.0 million, (ii) any Investment in any Person
as a result of which such Person becomes an 80% or more owned Subsidiary of the
Company, and (iii) any Investment in Marketable Securities.

     "Permitted Liens" means (a) Liens for taxes, assessments, governmental
charges or claims which are not yet delinquent or which are being contested in
good faith by appropriate proceedings, if a reserve or other appropriate
provision, if any, as shall be required in conformity with generally accepted
accounting principles shall have been made therefor; (b) other Liens incidental
to the conduct of the Company's and its Subsidiaries' business or the ownership
of its property and assets not securing any Debt, and which do not in the
aggregate materially detract from the value of the Company's and its
Subsidiaries' property or assets when taken as a whole, or materially impair the
use thereof in the operation of its business; (c) Liens with respect to assets
of a Subsidiary granted by such Subsidiary to the Company to secure Debt owing
to the Company; (d) pledges and deposits made in the ordinary course of business
in connection with workers' compensation, unemployment insurance and other types
of statutory obligations; (e) deposits made to secure the performance of
tenders, bids, leases, and other obligations of like nature incurred in the
ordinary course of business (exclusive of obligations for the payment of
borrowed money); (f) zoning

                                      -19-
<PAGE>

restrictions, servitudes, easements, rights-of-way, restrictions and other
similar charges or encumbrances incurred in the ordinary course of business
which, in the aggregate, do not materially detract from the value of the
property subject thereto or interfere with the ordinary conduct of the business
of the Company or its Subsidiaries; (g) Liens arising out of judgments or awards
against the Company or any Subsidiary with respect to which the Company or such
Subsidiary is prosecuting an appeal or proceeding for review and the Company or
such Subsidiary is maintaining adequate reserves in accordance with generally
accepted accounting principles; and (h) any interest or title of a lessor in the
property subject to any lease other than a Capital Lease.

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

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

     "Preferred Dividends" for any Person means for any period the quotient
determined by dividing the amount of dividends and distributions paid or accrued
(whether or not declared) on Preferred Stock of such Person during such period
calculated in accordance with generally accepted accounting principles, by 1
minus the maximum statutory income tax rate then applicable to the Company
(expressed as a decimal).

     "Preferred Stock" of any Person means Capital Stock of such Person of any
class or classes (however designated) that ranks prior, as to the payment of
dividends or as to the distribution of assets upon any voluntary or involuntary
liquidation, dissolution or winding up of such Person, to shares of Capital
Stock of any other class of such Person.

     "Purchase Agreement" means the Purchase Agreement, dated as of May 23,
1997, between the Company and the Purchasers, as such agreement may be amended
from time to time.

                                      -20-
<PAGE>

     "Purchase Money Debt" means Debt of the Company (including Acquired Debt
and Debt represented by Capital Lease Obligations, mortgage financings and
purchase money obligations) Incurred for the purpose of financing all or any
part of the cost of construction, acquisition or improvement by the Company or
any Subsidiary of the Company or any Joint Venture of any Telecommunications
Assets of the Company, any Subsidiary of the Company or any Joint Venture, and
including any related notes, Guarantees, collateral documents, instruments and
agreements executed in connection therewith, as the same may be amended,
supplemented, modified or restated from time to time.

     "Purchasers" means Goldman, Sachs & Co., Salomon Brothers Inc and Merrill
Lynch, Pierce, Fenner & Smith Incorporated.

     "readily marketable cash equivalents" means (i) marketable securities
issued or directly and unconditionally guaranteed by the United States
Government or issued by any agency thereof and backed by the full faith and
credit of the United States; (ii) marketable direct obligations issued by any
state of the United States of America or any political subdivision of any such
state or any public instrumentality thereof and, at the time of acquisition,
having the highest rating obtainable from either Standard & Poor's Rating
Service or Moody's Investors Service, Inc.; (iii) commercial paper maturing no
more than 180 days from the date of acquisition thereof and, at the time of
acquisition, having a rating of at least A-1 from Standard & Poor's Ratings
Service or at least P-1 from Moody's Investors Service, Inc.; and (iv)
certificates of deposit or bankers' acceptance maturing within one year from the
date of acquisition thereof issued by any commercial bank organized under the
laws of the United States of America or any state thereof or the District of
Columbia having unimpaired capital and surplus of not less than $100,000,000.

     "Receivables" means receivables, chattel paper, instruments, documents or
intangibles evidencing or relating to the right to payment of money.

     "Receivables Sale" of any Person means any sale of Receivables of such
Person (pursuant to a purchase facility or otherwise), other than in connection

                                      -21-
<PAGE>

with a disposition of the business operations of such Person relating thereto or
a disposition of defaulted Receivables for purpose of collection and not as a
financing arrangement.

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

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

     "Registered Securities" means the Exchange Securities and all other
Securities sold or otherwise disposed of pursuant to an effective registration
statement under the Securities Act, together with their respective Successor
Securities.

     "Regular Record Date" for the interest payable on any Interest Payment Date
means the May 15 or November 15 (whether or not a Business Day), as the case may
be, next preceding such Interest Payment Date. 30

     "Regulation S" means Regulation S under the Securities Act (or any
successor provision), as it may be amended from time to time.

     "Regulation S Certificate" means a certificate substantially in the form
set forth in Annex A.

     "Regulation S Global Security" has the meaning specified in Section 201.

     "Regulation S Legend" means a legend substantially in the form of the
legend required in the form of Security set forth in Section 202 to be placed
upon each Regulation S Security.

     "Regulation S Securities" means all Securities required pursuant to Section
305(c) to bear a Regulation S Legend. Such term includes the Regulation S Global
Security.

                                      -22-
<PAGE>

     "Related Person" of any Person means any other Person directly or
indirectly owning (a) 5% or more of the outstanding Common Stock of such Person
(or, in the case of a Person that is not a corporation, 5% or more of the
outstanding equity interest in such Person) or (b) 5% or more of the combined
outstanding voting power of the Voting Stock of such Person, except that, for
purposes of Section 1012, Related Person means any other Person directly or
indirectly owning 10% or more of the combined outstanding voting power of the
Voting Stock of such Person (or, in the case of a Person that is not a
corporation, 10% or more of the outstanding equity interest in such Person).

     "Resale Registration Statement" has the meaning set forth in the Form of
the Securities contained in Section 202.

     "Responsible Officer", when used with respect to the Trustee, means the
chairman or any vice-chairman of the board of directors, the chairman or any
vice-chairman of the executive committee of the board of directors, the chairman
of the trust committee, the president, any vice president, the secretary, any
assistant secretary, the treasurer, any assistant treasurer, the cashier, any
assistant cashier, any trust officer or assistant trust officer, the controller
or any assistant controller or any other officer of the Trustee customarily
performing functions similar to those performed by any of the above designated
officers 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 Global Security" has the meaning specified in Section 201.

     "Restricted Period" means the period of 41 consecutive days beginning on
and including the later of (i) the day on which Securities are first offered to
persons other than distributors (as defined in Regulation S) in reliance on
Regulation S and (ii) the original issuance date of the Securities.

     "Restricted Securities" means all Securities required pursuant to Section
305(c) to bear any Restricted Securities Legend. Such term includes the
Restricted Global Security.

                                      -23-
<PAGE>

     "Restricted Securities Certificate" means a certificate substantially in
the form set forth in Annex B.

     "Restricted Securities Legend" means, collectively, the legends
substantially in the forms of the legends required in the form of Security set
forth in Section 202 to be placed upon each Restricted Security.

     "Rule 144A" means Rule 144A under the Securities Act (or any successor
provision), as it may be amended from time to time.

     "Rule 144A Securities" means the Securities purchased by the Purchasers
from the Company pursuant to the Purchase Agreement, other than the Regulation S
Securities.

     "Sale and 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 more than 365 days 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 arrangement may be terminated by the lessee without
payment of a penalty.

     "Second Step-Down Date" has the meaning set forth in the form of Security
contained in Section 202.

     "Second Step-Up" has the meaning set forth in the form of Security
contained in Section 202.

     "Secured Credit Facility" means Debt outstanding at the date of this
Indenture of Subsidiaries and Joint Ventures of the Company and other Debt
Incurred from time to time pursuant to secured credit agreements or similar
facilities made available from time to time to the Company and its Subsidiaries
and Joint Ventures (including, without limitation, the secured lines of credit
with AT&T Credit

                                      -24-
<PAGE>

Corporation and Fleet National Bank), and including any related notes,
Guarantees, collateral documents, instruments and agreements executed in
connection therewith, as the same may be amended, supplemented, modified or
restated from time to time.

     "Securities" means the Exchange Securities and the Original Securities.

     "Securities Act" means the Securities Act of 1933 and any statute successor
thereto, in each case as amended from time to time.

     "Securities Act Legend" means a Restricted Securities Legend or a
Regulation S Legend.

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

     "Special Interest" has the meaning set forth in the form of Security
contained in Section 202. Unless the context otherwise requires, references
herein to "interest" on the Securities shall include Special Interest.

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

     "Stated Maturity", when used with respect to any Security or any
installment of interest thereon, means the date specified in such Security as
the fixed date on which the principal of such Security or such installment of
interest is due and payable.

     "Step-Down Date" has the meaning set forth in the form of the Security
contained in Section 202.

     "Step-Up" has the meaning set forth in the form of the Security contained
in Section 202.

     "Strategic Equity Investment" means an equity investment made by a
Strategic Investor in the Company in an aggregate amount of not less than $25.0
million.

     "Strategic Investor" means a corporation, partnership or other entity
engaged in one or more

                                      -25-
<PAGE>

Telecommunications Businesses that has, or 80% or more of the Voting Stock of
which is owned by a Person that has, an equity market capitalization, at the
time of its initial Investment in the Company or in a Joint Venture with the
Company, in excess of $2.0 billion.

     "Subordinated Debt" means Debt of the Company as to which the payment of
principal of (and premium, if any) and interest and other payment obligations in
respect of such Debt shall be subordinate to the prior payment in full of the
Notes to at least the following extent: (i) no payments of principal of (or
premium, if any) or interest on or otherwise due in respect of such Debt may be
permitted for so long as any default in the payment of principal (or premium, if
any) or interest on the Securities exists; (ii) in the event that any other
default that with the passing of time or the giving of notice, or both, would
constitute an event of default exists with respect to the Securities, upon
notice by 25% or more in principal amount of the Securities to the Trustee, the
Trustee shall have the right to give notice to the Company and the holders of
such Debt (or trustees or agents therefor) of a payment blockage, and thereafter
no payments of principal of (or premium, if any) or interest on or otherwise due
in respect of such Debt may be made for a period of 179 days from the date of
such notice; and (iii) such Debt may not (x) provide for payments of principal
of such Debt at the stated maturity thereof or by way of a sinking fund
applicable thereto or by way of any mandatory redemption, defeasance, retirement
or repurchase thereof by the Company (including any redemption, retirement or
repurchase which is contingent upon events or circumstances, but excluding any
retirement required by virtue of acceleration of such Debt upon an event of
default thereunder), in each case prior to the final Stated Maturity of the
Securities or (y) permit redemption or other retirement (including pursuant to
an offer to purchase made by the Company) of such other Debt at the option of
the holder thereof prior to the final Stated Maturity of the Securities, other
than a redemption or other retirement at the option of the holder of such Debt
(including pursuant to an offer to purchase made by the Company) which is
conditioned upon a change of control of the Company pursuant to provisions
substantially similar to those of Section 1017 of this Indenture (and which
shall provide that such Debt will not be repurchased pursuant to such provisions
prior to the Company's repurchase of the Securities required to be

                                      -26-
<PAGE>

repurchased by the Company pursuant to the provisions of Section 1017 of this 
Indenture).

     "Subsidiary" of any Person means (i) a corporation more than 50% of the
combined voting power of the outstanding Voting Stock of which is owned,
directly or indirectly, by such Person or by one or more other Subsidiaries of
such Person or by such Person and one or more Subsidiaries thereof or (ii) any
other Person (other than a corporation) in which such Person, or one or more
other Subsidiaries of such Person or such Person and one or more other
Subsidiaries thereof, directly or indirectly, has at least a majority ownership
and power to direct the policies, management and affairs thereof. An 80% or more
owned Subsidiary of the Company is (i) a corporation 80% or more of the combined
voting power of the outstanding Voting Stock, and more than 80% of the Capital
Stock or other ownership interests, of which is owned, directly or indirectly,
by the Company or by one or more other Subsidiaries of the Company or by the
Company and one or more Subsidiaries thereof or (ii) any other Person (other
than a corporation) in which the Company, or one or more other Subsidiaries of
the Company or the Company and one or more other Subsidiaries of the Company,
directly or indirectly, has at least an 80% ownership interest and power to
direct the policies, management and affairs thereof.

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

     "Telecommunications Assets" means all assets, rights (contractual or
otherwise) and properties, whether tangible or intangible, used or intended for
use in connection with a Telecommunications Business.

     "Telecommunications Business" means the business of (i) transmitting, or
providing services relating to the transmission of, voice, video or data through
owned or leased transmission facilities, (ii) creating, developing or

                                      -27-
<PAGE>

marketing communications related network equipment, software and other devices
for use in a Telecommunications Business or (iii) evaluating, participating or
pursuing any other activity or opportunity that is primarily related to those
identified in (i) or (ii) above; provided that the determination of what
constitutes a Telecommunications Business shall be made in good faith by the
Board of Directors of the Company.

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

     "Trust Indenture Act" means the Trust Indenture Act of 1939 as in force at
the date as of which this instrument was executed; provided, however, that in
the event the Trust Indenture Act of 1939 is amended after such date, "Trust
Indenture Act" means, to the extent required by any such amendment, the Trust
Indenture Act of 1939 as so amended.

     "Unrestricted Securities Certificate" means a certificate substantially in
the form set forth in Annex C.

     "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" of any Person means Capital Stock of such Person which
ordinarily has voting power for the election of directors (or persons performing
similar functions) of such Person, whether at all times or only so long as no
senior class of securities has such voting power by reason of any contingency.

     "Wholly-Owned Subsidiary" of any Person means a Subsidiary of such Person
all of the outstanding Voting Stock or other ownership interests (other than
directors' qualifying shares) of which shall at the time be owned by such Person
or by one or more Wholly-Owned Subsidiaries of such Person or by such Person and
one or more Wholly-Owned Subsidiaries of such Person.

                                      -28-
<PAGE>

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 such certificates and opinions as may be required under the Trust
Indenture Act and under this Indenture. Each such certificate or opinion shall
be given in the form of an Officers' Certificate, if to be given by an officer
of the Company, or an Opinion of Counsel, if to be given by counsel, and shall
comply with the requirements of the Trust Indenture Act and any other
requirement set forth in this Indenture.

         Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture 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 has made such examination or investigation as is necessary to enable
         him 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,

                                      -29-
<PAGE>

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 of an officer of the Company may be based, insofar as
it relates to legal matters, upon an opinion of counsel submitted therewith,
unless such officer knows, or in the exercise of reasonable care should know,
that the opinion with respect to the matters upon which his certificate is based
is erroneous. Any opinion of counsel may be based, insofar as it relates to
factual matters, upon a certificate of an officer or officers of the Company 
submitted therewith stating the information on which counsel is relying, unless
such counsel knows, or in the exercise of reasonable care should know, that the
certificate with respect to such matters is 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; Record Dates.

         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 agent 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 (subject to Section 601) conclusive in favor of the Trustee and
the Company, if made in the manner provided in this Section.

                                      -30-
<PAGE>

         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 his
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 which the Trustee deems sufficient.

         The ownership of Securities shall be proved by the Security Register.

         Any request, demand, authorization, direction, notice, consent, waiver
or other Act of the Holder of any Security shall bind every future Holder of the
same Security and the Holder of every Security 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
Security.

         The Company may set any day as a record date for the purpose of
determining the Holders of Outstanding Securities entitled to give, make or take
any request, demand, authorization, direction, notice, consent, waiver or other
action provided or permitted by this Indenture to be given, made or taken by
Holders of Securities, provided that the Company may not set a record date for,
and the provisions of this paragraph shall not apply with respect to, the giving
or making of any notice, declaration, request or direction referred to in the
next paragraph. If not set by the Company prior to the first solicitation of a
Holder made by any Person in respect of any such matter referred to in the
foregoing sentence, the record date for any such matter shall be the 30th day
(or, if later, the date of the most recent list of Holders required to be
provided pursuant to Section 701) prior to such first solicitation. If any
record date is set pursuant to this paragraph, the Holders of Outstanding
Securities on such record date, and no other

                                      -31-
<PAGE>

Holders, shall be entitled to take the relevant action, whether or not such
Holders remain Holders after such record date; provided that no such action
shall be effective hereunder unless taken on or prior to the applicable
Expiration Date by Holders of the requisite principal amount of Outstanding
Securities on such record date. Nothing in this paragraph shall be construed to
prevent the Company from setting a new record date for any action for which a
record date has previously been set pursuant to this paragraph (whereupon the
record date previously set shall automatically and with no action by any Person
be cancelled and of no effect), and nothing in this paragraph shall be construed
to render ineffective any action taken by Holders of the requisite principal
amount of Outstanding Securities on the date such action is taken. Promptly
after any record date is set pursuant to this paragraph, the Company, at its own
expense, shall cause notice of such record date, the proposed action by Holders
and the applicable Expiration Date to be given to the Trustee in writing and to
each Holder of Securities in the manner set forth in Section 106.

         The Trustee may set any day as a record date for the purpose of
determining the Holders of Outstanding Securities entitled to join in the giving
or making of (i) any Notice of Default, (ii) any declaration of acceleration
referred to in Section 502, (iii) any request to institute proceedings referred
to in Section 507(2) or (iv) any direction referred to in Section 512. If any
record date is set pursuant to this paragraph, the Holders of Outstanding
Securities on such record date, and no other Holders, shall be entitled to join
in such notice, declaration, request or direction, whether or not such Holders
remain Holders after such record date; provided that no such action shall be
effective hereunder unless taken on or prior to the applicable Expiration Date
by Holders of the requisite principal amount of Outstanding Securities on such
record date. Nothing in this paragraph shall be construed to prevent the Trustee
from setting a new record date for any action for which a record date has
previously been set pursuant to this paragraph (whereupon the record date
previously set shall automatically and with no action by any Person be cancelled
and of no effect), and nothing in this paragraph shall be
construed to render ineffective any action taken by Holders of the requisite
principal amount of Outstanding Securities on the date such action is taken.
Promptly after any record date is set pursuant to this paragraph, the Trustee,
at the

                                      -32-
<PAGE>

Company's expense, shall cause notice of such record date, the proposed action
by Holders and the applicable Expiration Date to be given to the Company in
writing and to each Holder of Securities in the manner set forth in Section 106.

         With respect to any record date set pursuant to this Section, the party
hereto which sets such record dates may designate any day as the "Expiration
Date" and from time to time may change the Expiration Date to any earlier or
later day; provided that no such change shall be effective unless notice of the
proposed new Expiration Date is given to the other party hereto in writing, and
to each Holder of Securities in the manner set forth in Section 106, on or prior
to the existing Expiration Date. If an Expiration Date is not designated with
respect to any record date set pursuant to this Section, the party hereto which
set such record date shall be deemed to have initially designated the 180th day
after such record date as the Expiration Date with respect thereto, subject to
its right to change the Expiration Date as provided in this paragraph. 
Notwithstanding the foregoing, no Expiration Date shall be later than the 180th
day after the applicable record date.

         Without limiting the foregoing, a Holder entitled hereunder to take any
action hereunder with regard to any particular Security may do so with regard to
all or any part of the principal amount of such Security or by one or more duly
appointed agents each of which may do so pursuant to such appointment with
regard to all or any part of such principal amount.

SECTION 105. Notices, Etc., to Trustee and 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 delivered in writing to the
         Trustee at its Corporate Trust Office, Attention: Corporate Trust
         Administration, or

                  (2) the Company by the Trustee or by any Holder shall be
         sufficient for every purpose hereunder (unless

                                      -33-
<PAGE>

         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 instrument 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 to Holders of any event, 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 Security Register, not later
than the latest date (if any), and not earlier than the earliest date (if any),
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. 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 regular mail service or by
reason of any other cause it shall be impracticable to give such notice by mail,
then such notification as shall be made with the approval of the Trustee shall
constitute a sufficient notification for every purpose hereunder.

SECTION 107. Application of Trust Indenture Act.

         The Trust Indenture Act shall apply as a matter of contract to this
Indenture for purposes of interpretation, construction and defining the rights
and obligations here under. If any provision hereof limits, qualifies or
conflicts with a provision of the Trust Indenture Act that is required under
such Act to be a part of and govern this Indenture, the latter provision shall
control. If any

                                      -34-
<PAGE>

provision of this Indenture modifies or excludes any provision of the Trust 
Indenture Act that may be so modified or excluded, the latter provision shall be
deemed to apply to this Indenture as so modified or to be excluded, as the case
may be.

SECTION 108. Effect of Headings and Table of Contents.

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

SECTION 109. 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 110. Separability Clause.

         In case any provision in this Indenture or in the Securities 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 111. Benefits of Indenture.

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

SECTION 112. Governing Law.

         This Indenture and the Securities shall be governed by and construed in
accordance with the laws of the State of New York.

                                      -35-
<PAGE>

SECTION 113. Legal Holidays.

         In any case where any Interest Payment Date, Redemption Date, Purchase
Date or Stated Maturity of any Security shall not be a Business Day, then
(notwithstanding any other provision of this Indenture or of the Securities)
payment of interest or principal (and premium, if any) 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 the Interest Payment Date, Redemption Date, Purchase
Date or at the Stated Maturity, provided that no interest shall accrue for the
period from and after such Interest Payment Date, Redemption Date, Purchase Date
or Stated Maturity, as the case may be.

                                   ARTICLE TWO
                                 Security Forms

SECTION 201. Forms Generally.

         The Securities and the Trustee's certificates of authentication thereof
shall be in substantially the forms set forth in this Article, with such
appropriate legends, insertions, omissions, substitutions and other variations
as are required or permitted by this Indenture, and may have such letters,
numbers or other marks of identification and such legends or endorsements placed
thereon as may be required to comply with the rules of any securities exchange
or as may, consistently herewith, be determined by the officers executing such
Securities, as evidenced by their execution of the Securities.

         Upon their original issuance, Rule 144A Securities shall be issued in
the form of one or more Global Securities registered in the name of the
Depositary or its nominee and deposited with the Trustee, as custodian for the
Depositary, for credit by the Depositary to the respective accounts of
beneficial owners of the Securities represented thereby (or such other accounts
as they may direct). Such Global Securities, together with their Successor
Securities which are Global Securities other than the Regulation S Global
Security, are collectively herein called the "Restricted

                                      -36-
<PAGE>

Global Security". Upon their original issuance, Regulation S Securities shall be
issued in the form of one or more Global Securities registered in the name of
the Depositary, or its nominee and deposited with the Trustee, as custodian for
the Depositary, for credit to the respective accounts of the beneficial owners
of the Securities represented thereby (or such other accounts as they may
direct), provided that upon such deposit all such Securities shall be credited
to or through accounts maintained at the Depositary by or on behalf of Euroclear
or Cedel. Such Global Securities, together with their Successor Securities which
are Global Securities other than the Restricted Global Security, are
collectively herein called the "Regulation S Global Security".

         The definitive Securities shall be printed, lithographed or engraved
or produced by any combination of these methods on steel engraved borders or may
be produced in any other manner all as determined by the officers executing such
Securities, as evidenced by their execution of such Securities.

SECTION 202. Form of Face of Security.

         [If a Global Security, then insert -- THIS SECURITY IS A GLOBAL
SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS
REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY
NOT BE EXCHANGEABLE IN WHOLE OR IN PART FOR A SECURITY REGISTERED, AND NO
TRANSFER OF THIS SECURITY IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF
ANY PERSON OTHER THAN SUCH DEPOSITARY OR A NOMINEE THEREOF, EXCEPT IN THE
LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.]

         [If a Global Security to be held by The Depository Trust Company, then
insert -- UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE
OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE ISSUER
OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY
CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME
AS IS REQUESTED BY

                                      -37-
<PAGE>

AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO
SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY
TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON
IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST
HEREIN.]

         [If Restricted Securities, then insert -- THE SECURITIES EVIDENCED
HEREBY HAVE NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF 1933
(THE "SECURITIES ACT") AND MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE
TRANSFERRED EXCEPT (A)(1) TO A PERSON WHOM THE SELLER REASONABLY BELIEVES IS A
QUALIFIED INSTITUTIONAL BUYER WITHIN THE MEANING OF RULE 144A UNDER THE
SECURITIES ACT PURCHASING FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED
INSTITUTIONAL BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, (2)
IN AN OFFSHORE TRANSACTION COMPLYING WITH RULE 903 OR RULE 904 OF REGULATION S
UNDER THE SECURITIES ACT, (3) PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER
THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER, (4) TO INSTITUTIONAL
ACCREDITED INVESTORS IN A TRANSACTION EXEMPT FROM THE REGISTRATION REQUIREMENTS
OF THE SECURITIES ACT OR (5) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT
UNDER THE SECURITIES ACT AND (B) IN EACH CASE IN ACCORDANCE WITH ALL APPLICABLE
SECURITIES LAWS.]

         [If a Regulation S Security, then insert -- THIS SECURITY HAS NOT BEEN
REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933 (THE "SECURITIES ACT") AND MAY
NOT BE OFFERED, SOLD OR DELIVERED IN THE UNITED STATES OR TO, OR FOR THE ACCOUNT
OR BENEFIT OF, ANY U.S. PERSON, UNLESS THIS SECURITY IS REGISTERED UNDER THE
SECURITIES ACT OR AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS THEREOF IS
AVAILABLE.]

     10% SENIOR NOTES DUE June 1, 2007

[IF RESTRICTED GLOBAL SECURITY - CUSIP NO. 114399AG3]
[IF ANY REGULATION S SECURITY - CUSIP NO. U11155AB1]
[IF REGULATION S GLOBAL SECURITY - ISIN NO. - __________]

No. __________                                                  $_______________

                                      -38-
<PAGE>

         Brooks Fiber Properties, Inc., a corporation duly organized and
existing under the laws of Delaware (herein called the "Company", which term
includes any successor Person under the Indenture hereinafter referred to), for
value received, hereby promises to pay to _________________, or registered
assigns, the principal sum of ______________ Dollars [if this Security is a
Global Security, then insert: (which principal amount may from time to time be
increased or decreased to such other principal amounts (which, taken together
with the principal amounts of all other Outstanding Securities, shall not exceed
$250,000,000 in the aggregate at any time) by adjustments made on the records of
the Trustee hereinafter referred to in accordance with the Indenture)] on June
1, 2007, and to pay interest thereon from May 29, 1997 or from the most recent
Interest Payment Date to which interest has been paid or duly provided for,
semi-annually on June 1 and December 1 in each year, commencing December 1, 1997
at the rate of 10% per annum, until the principal hereof is paid or made
available for payment [If Original Securities, then insert: provided, however,
that if (i) the Company has not filed a registration statement (the "Exchange
Registration Statement") under the Securities Act of 1933, as amended (the
"Securities Act"), registering a security substantially identical to this
Security (except that such Security will not contain terms with respect to the
Special Interest payments described below or transfer restrictions) pursuant to
an exchange offer (the "Exchange Offer") (or, in lieu thereof, a registration
statement registering this Security for resale (a "Resale Registration
Statement")) by July 28, 1997, or (ii) the Exchange Registration Statement
relating to the Exchange Offer or, if applicable, the Resale Registration
Statement has not become or been declared effective by August 27, 1997, or (iii)
the Exchange Offer has not been completed within 45 days after the date on which
the Exchange Registration Statement has become or been declared effective
initially (if the Exchange Offer is then required to be made pursuant to the
Exchange and Registration Rights Agreement (the "Exchange and Registration
Rights Agreement"), dated as of May 29, 1997, by and between the Company, the
Purchasers (as defined therein) and the Holders from time to time of the
Securities) or (iv) either the Exchange Registration Statement or, if
applicable, the Resale Registration Statement is filed and declared effective
(except as

                                      -39-
<PAGE>

specifically permitted therein) but shall thereafter cease to be effective
without being succeeded promptly by an additional registration statement filed
and declared effective, in each case (i) through (iv) upon the terms and
conditions set forth in the Exchange and Registration Rights Agreement (each
such event referred to in clauses (i) through (iv), a "Registration Default"),
then interest will accrue (in addition to the stated interest on the Securities)
(the "Step-Up") at a rate of 0.5% per annum, determined daily, on the principal
amount of the Securities, from the period from the occurrence of the
Registration Default until such time (the "Step-Down Date") as no Registration
Default is in effect and, provided, further, that if either the Exchange Offer
has not been consummated or, if applicable, the Resale Registration Statement
has not become or been declared effective, in each case by October 11, 1997,
then the per annum rate of such Special Interest shall increase (the "Second
Step-Up") by an additional 0.5% per annum until such time (the "Second Step Down
Date") as the Company consummates the Exchange Offer or, if applicable, the
Resale Registration Statement becomes or has been declared effective (after
which such interest rate will be restored to its initial rate). Interest
accruing as a result of the Step-Up or the Second Step-Up is referred to herein
as "Special Interest." Accrued Special Interest, if any, shall be paid
semi-annually on June 1 and December 1 in each year; and the amount of accrued
Special Interest shall be determined on the basis of the number of days actually
elapsed. Any accrued and unpaid interest (including Special Interest) on this
Security upon the issuance of an Exchange Security (as defined in the Indenture)
in exchange for this Security shall cease to be payable to the Holder hereof but
such accrued and unpaid interest (including Special Interest) shall be payable
on the next Interest Payment Date for such Exchange Security to the Holder
thereof on the related Regular Record Date.] The interest so payable, and
punctually paid or duly provided for, on any Interest Payment Date will, as
provided in such Indenture, be paid to the Person in whose name this Security
(or one or more Predecessor Securities) is registered at the close of business
on the Regular Record Date for such interest, which shall be May 15 or November
15 (whether or not a Business Day), as the case may be, next preceding such
Interest Payment Date. Any such interest not so punctually paid or duly provided
for will forthwith cease to be payable to the Holder on such Regular Record Date
and may either be

                                      -40-
<PAGE>

paid to the Person in whose name this Security (or one or more Predecessor
Securities) is registered at the close of business on a Special Record Date for
the payment of such Defaulted Interest to be fixed by the Trustee, notice
whereof shall be given to Holders of Securities not less than 10 days prior to
such Special Record Date, or be paid at any time in any other lawful manner not
inconsistent with the requirements of any securities exchange on which the
Securities may be listed, and upon such notice as may be required by such
exchange, all as more fully provided in said Indenture.

         In the case of a default in payment of principal of and premium, if
any, on this Security upon acceleration or redemption, interest shall be payable
pursuant to the preceding paragraph on such overdue principal (and premium, if
any), such interest shall be payable on demand and, if not so paid on demand,
such interest shall itself bear interest at the rate of 10% per annum (to the
extent that the payment of such interest shall be legally enforceable), and
shall accrue from the date of such demand for payment to the date payment of
such interest has been made or duly provided for, and such interest on unpaid
interest shall also be payable on demand.

         Payment of the principal of (and premium, if any) and interest on this
Security will be made at the corporate trust office of the Trustee and at the
office or agency of the Company maintained for that purpose in the Borough of
Manhattan, The City of New York, New York, and at any other office or agency
maintained by the Company for such purpose, in such coin or currency of the
United States of America as at the time of payment is legal tender for payment
of public and private debts; provided, however, that at the option of the
Company payment of interest may be made by check mailed to the address of the
Person entitled thereto as such address shall appear in the Security Register.

         Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

         Unless the certificate of authentication hereon has been executed by
the Trustee referred to on the reverse hereof by manual signature, this Security
shall not be

                                      -41-
<PAGE>

entitled to any benefit under the Indenture or be valid or obligatory for any 
purpose.

         IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

Dated:


[SEAL]
                                        BROOKS FIBER PROPERTIES, INC.

                                        By______________________________

Attest:

_______________________________________


SECTION 203. Form of Reverse of Security.

         This Security is one of a duly authorized issue of Securities of the
Company designated as its 10% Senior Notes due June 1, 2007 (the "Securities")
issued under an Indenture, dated as of May 29, 1997 (herein called the
"Indenture"), between the Company and The Bank of New York, as trustee (herein
called the "Trustee", which term includes any successor trustee under the
Indenture). The Securities are limited in aggregate principal amount to
$250,000,000. Reference is hereby made to the Indenture and all indentures
supplemental thereto for a statement of the respective rights, limitations of
rights, duties and immunities thereunder of the Company, the Trustee and the
Holders of the Securities and of the terms upon which the Securities are, and
are to be, authenticated and delivered.

         The Securities are subject to redemption upon not less than 30 nor more
than 60 days' notice by mail to each Holder of Securities to be redeemed at such
Holder's address appearing in the Security Register, in amounts of $1,000 or an
integral multiple of $1,000, at any time on or after June 1, 2002 and prior to 
maturity, as a whole or in part, at the election of the Company, at the 
following Redemption

                                      -42-
<PAGE>

Prices (expressed as percentages of the principal amount) plus accrued interest
to but excluding the Redemption Date (subject to the right of Holder on the
relevant Regular Record Date to receive interest due on an Interest Payment that
is on or prior to the Redemption Date), if redeemed during the 12-month period
beginning November 1, of each of the years indicated below:

                                   Year      Redemption
                                                Price
                           ----------------- ----------
                           2002               105.000%
                           2003               103.333%
                           2004               101.667%
                           2005 & thereafter  100.000% 
                                         
and thereafter at a Redemption Price equal to 100% of the principal amount,
together in the case of any such redemption with accrued interest to the
Redemption Date, but interest installments whose Stated Maturity is on or prior
to such Redemption Date will be payable to the Holders of such Securities, or
one or more Predecessor Securities, of record at the close of business on the
relevant Record Dates referred to on the face hereof, all as provided in the
Indenture.

         The Securities are further subject to redemption prior to June 1, 2002
only in the event that the Company receives net proceeds from any sale of its
Common Stock (other than Disqualified Stock) in a Strategic Equity Investment on
or before June 1, 2000, in which case the Company may, at its option, use all or
a portion of any such net proceeds to redeem Securities in a principal amount of
up to an aggregate amount equal to 33 1/3% of the original principal amount of
the Securities, provided, however, that Securities in an amount equal to at
least 66 2/3% of the original principal amount of the Securities remain
outstanding after such redemption. Such redemption must occur on a Redemption
Date within 75 days of any such sale and upon not less than 30 nor more than 60
days' notice by mail to each Holder of Securities to be redeemed at such
Holder's address appearing in the Security Register, in amounts of $1,000 or an

                                      -43-
<PAGE>

integral multiple of $1,000 at a Redemption Price of 110% of the principal
amount of the Securities plus accrued interest to but excluding the Redemption
Date.

         The Securities do not have the benefit of any sinking fund obligations.

         The Indenture provides that, subject to certain conditions, if (i) a
Change of Control (as defined in the Indenture) occurs or (ii) certain Net
Available Proceeds are available to the Company as a result of any Asset
Disposition, the Company shall be required to make an Offer to Purchase for all
or a specified portion of the Securities.

         [If not a Global Security -- In the event of redemption or purchase
pursuant to an Offer to Purchase of this Security in part only, a new Security
or Securities of like tenor for the unredeemed or unpurchased portion hereof
will be issued in the name of the Holder hereof upon the cancellation hereof.]

         [If a Global Security insert -- In the event of a deposit or withdrawal
of an interest in this Security (including upon an exchange, transfer,
redemption or repurchase of this Security in part only) effected in accordance
with the Applicable Procedures, the Security Registrar, upon receipt of notice
of such event from the Depositary's custodian for this Security, shall make an
adjustment on its records to reflect an increase or decrease of the Outstanding
principal amount of this Security resulting from such deposit or withdrawal, as
the case may be.]

         If an Event of Default shall occur and be continuing, the principal of
all the Securities may be declared due and payable in the manner and with the
effect provided in the Indenture.

         The Indenture contains provisions for defeasance at any time of (i) the
entire indebtedness of this Security, or (ii) certain restrictive covenants and
Events of Default with respect to this Security, in each case upon compliance
with certain conditions set forth therein.

         Unless the context otherwise requires, the Original Securities (as 
defined in the Indenture) and the Exchange

                                      -44-
<PAGE>

Securities (as defined in the Indenture) shall constitute one series for all
purposes under the Indenture, including without limitation, amendments, waivers,
redemptions and Offers to Purchase.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities under the Indenture at
any time by the Company and the Trustee with the consent of the Holders of a
majority in aggregate principal amount of the Securities at the time
Outstanding. The Indenture also contains provisions permitting the Holders of
specified percentages in aggregate principal amount of the Securities at the
time Outstanding, on behalf of the Holders of all the Securities, to waive
compliance by the Company with certain provisions of the Indenture and certain
past defaults under the Indenture and their consequences. Any such consent or
waiver by the Holder of this Security shall be conclusive and binding upon such
Holder and upon all future Holders of this Security and of any Security issued
upon the registration of transfer hereof or in exchange herefor or in lieu
hereof, whether or not notation of such consent or waiver is made upon this
Security.

         No reference herein to the Indenture and no provision of this Security
or of the Indenture shall alter or impair the obligation of the Company, which
is absolute and unconditional, to pay the principal of (and premium, if any) and
interest on this Security at the times, place and rate, and in the coin or
currency, herein prescribed.

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Security is registrable in the Security
Register, upon surrender of this Security for registration of transfer at the
office or agency of the Company in the Borough of Manhattan, The City of New
York, New York, duly endorsed by, or accompanied by a written instrument of
transfer in form satisfactory to the Company and the Security Registrar duly
executed by, the Holder hereof or his attorney duly authorized in writing, and
thereupon one or more new Securities, of authorized denominations and like tenor
and for the same aggregate principal amount, will be issued to the designated
transferee or transferees.

         The Securities are issuable only in registered form without coupons in
denominations of $1,000 and any integral multiple thereof. As provided in the

                                      -45-
<PAGE>

Indenture and subject to certain limitations therein set forth, Securities are
exchangeable for a like tenor and aggregate principal amount of Securities of a
different authorized denomination, as requested by the Holder surrendering the
same.

         No service charge shall be made for any such registration of transfer
or exchange, but the Company may require payment of a sum sufficient to cover
any tax or other governmental charge payable in connection therewith.

         Prior to due presentment of this Security for registration of
transfer, the Company, the Trustee and any agent of the Company or the Trustee
may treat the Person in whose name this Security is registered as the owner
hereof for all purposes, whether or not this Security be overdue, and neither
the Company, the Trustee nor any such agent shall be affected by notice to the
contrary.

         Interest on this Security shall be computed on the basis of a 360-day
year of twelve 30-day months; provided, however, that Special Interest shall be
computed on the basis of a 365- or 366-day year, as the case may be, and the
number of days actually elapsed.

         All terms used in this Security which are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

                       OPTION OF HOLDER TO ELECT PURCHASE

         If you want to elect to have this Security purchased by the Company
pursuant to Section 1013 or 1017 of the Indenture, check the box:

                                       [ ]

         If you want to elect to have only a part of this Security purchased by
the Company pursuant to Section 1013 or 1017 of the Indenture, state the amount:
$___________

Dated:________________                  Your Signature:____________________

                          (Sign exactly as name appears
                       on the other side of this Security)

                                      -46-
<PAGE>

Signature Guarantee:____________________________________________________________

Notice: Signature(s) must be guaranteed by an "eligible guarantor institution"
meeting the requirements of the Security Registrar which requirements will
include membership or participation in STAMP or such other "signature guarantee
program" as may be determined by the Trustee in addition to, or in substitution
for STAMP, all in accordance with the Securities Exchange Act of 1934, as
amended.

SECTION 204. Form of Trustee's Certificate of Authentication.

         This is one of the Securities referred to in the within-mentioned
Indenture.

Date:

                           The Bank of New York,
                                                 as Trustee


                           By _____________________________
                                  Authorized Signatory

                                  ARTICLE THREE
                                 The Securities

SECTION 301. Title and Terms.

         The aggregate principal amount of Securities which may be authenticated
and delivered under this Indenture is limited to $250,000,000, except for
Securities authenticated and delivered upon registration of transfer of, or in
exchange for, or in lieu of, other Securities pursuant to Section 304, 305, 306,
906 or 1108 or in connection with an Offer to Purchase pursuant to Section 1013
or 1017. The Company may issue Exchange Securities from time to time pursuant to
an Exchange Offer or otherwise, in each case

                                      -47-
<PAGE>

pursuant to a Board Resolution, subject to Section 303, included in an Officers'
Certificate delivered to the Trustee, in authorized denominations in exchange
for a like principal amount of Original Securities. Upon any such exchange the
Original Securities shall be cancelled in accordance with Section 309 and shall
no longer be deemed Outstanding for any purpose. In no event shall the aggregate
principal amount of Original Securities and Exchange Securities Outstanding
exceed $250,000,000.

         The Securities shall be known and designated as the "10% Senior Notes
due June 1, 2007" of the Company. The Stated Maturity of the Securities shall be
June 1, 2007. The Securities shall bear interest at the rate of 10% per annum,
from May 29, 1997 or from the most recent Interest Payment Date thereafter to
which interest has been paid or duly provided for, as the case may be, payable
semi-annually on June 1 and December 1, commencing December 1, 1997, until the
principal thereof is paid or made available for payment; provided, however, with
respect to Original Securities, if there has been a Registration Default, a
Step-Up will occur and the Original Securities will from then bear Special
Interest until the Step-Down Date and, if either the Exchange Offer has not been
consummated or, if applicable, the Resale Registration Statement has not become
or been declared effective, in each case, by October 11, 1997, a Second Step-Up
will occur and the Original Securities will from then bear Special Interest
until the Second Step-Down Date. Accrued Special Interest, if any, shall be paid
in cash in arrears semi-annually on June 1 and December 1 in each year, and the
amount of accrued Special Interest shall be determined on the basis of the
number of days actually elapsed.

         The principal of and premium, if any, and interest on the Securities
shall be payable at the corporate trust office of the Trustee in the Borough of
Manhattan, The City of New York, New York, maintained for such purpose and at
any other office or agency maintained by the Company for such purpose; provided,
however, that at the option of the Company payment of interest may be made by
check mailed to the address of the Person entitled thereto as such address shall
appear in the Security Register.

         The Securities shall be subject to repurchase by the Company pursuant 
to an Offer to Purchase as provided in Sections 1013 and 1017 of the Indenture.

                                      -48-
<PAGE>

         The Securities shall be redeemable as provided in Article Eleven.

         The Securities shall not have the benefit of any sinking fund
obligations.

         The Securities shall be subject to defeasance at the option of the
Company as provided in Article Twelve.

         Unless the context otherwise requires, the Original Securities and the
Exchange Securities shall constitute one series for all purposes under the
Indenture, including without limitation, amendments, waivers, redemptions and
Offers to Purchase.

SECTION 302. Denominations.

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

SECTION 303. Execution, Authentication, Delivery and Dating.

         The Securities shall be executed on behalf of the Company by its
Chairman of the Board, its Vice Chairman of the Board, its President or one of
its Vice Presidents, under its corporate seal reproduced thereon attested by its
Secretary or one of its Assistant Secretaries. The signature of any of these
officers on the Securities may be manual or facsimile.

         Securities 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 Securities or did not
hold such offices at the date of such Securities.

         At any time and from time to time after the execution and delivery of
this Indenture, the Company may deliver Securities executed by the Company to
the Trustee for

                                      -49-
<PAGE>

authentication, together with a Company Order for the authentication and
delivery of such Securities; and the Trustee in accordance with such Company
Order shall authenticate and deliver such Securities as in this Indenture
provided and not otherwise.

         At any time and from time to time after the execution and delivery of
this Indenture and after the effectiveness of a Registration Statement under the
Securities Act with respect thereto, the Company may deliver Exchange Securities
executed by the Company to the Trustee for authentication, together with a
Company Order for the authentication and delivery of such Exchange Securities
and a like principal amount of Original Securities for cancellation in
accordance with Section 309 of this Indenture, and the Trustee in accordance
with the Company Order shall authenticate and deliver such Securities. In
authenticating such Exchange Securities, and accepting the additional
responsibilities under this Indenture in relation to such Securities, the
Trustee shall be entitled to receive, and (subject to Section 601) shall be
fully protected in relying upon, an Opinion of Counsel stating,

                  (a) that such Exchange Securities have been duly and validly
         issued in accordance with the terms of the Indenture, and are entitled
         to all the rights and benefits set forth herein; and

                  (b) that the issuance of the Exchange Securities in exchange
         for the Original Securities has been effected in compliance with the
         Securities Act of 1933, as amended.

                  Each Security shall be dated the date of its authentication.

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

SECTION 304. Temporary Securities.

                                      -50-
<PAGE>

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

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

SECTION 305. Registration, Registration of Transfer and Exchange.

         (a) 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 collectively referred to as the "Security Register") in which, subject
to such reasonable regulations as it may prescribe, the Company shall provide
for the registration of Securities and of transfers of Securities. The Trustee
is hereby appointed "Security Registrar" for the purpose of registering
Securities and transfers of Securities as herein provided. Such Security
Register shall distinguish between Original Securities and Exchange Securities.

         Subject to the other provisions of this Indenture regarding
restrictions on transfer, upon surrender for

                                      -51-
<PAGE>

registration of transfer of any Security at an office or agency of the Company
designated pursuant to Section 1002 for such purpose in accordance with the
terms hereof, the Company shall execute, and the Trustee shall authenticate and
deliver, in the name of the designated transferee or transferees, one or more
new Securities of any authorized denominations and of a like tenor and aggregate
principal amount and bearing such restrictive legends as may be required by this
Indenture.

         At the option of the Holder, and subject to the other provisions of
this Section 305, Securities may be exchanged for other Securities of any
authorized denominations and of a like tenor and aggregate principal amount,
upon surrender of the Securities to be exchanged at such office or agency.
 Whenever any Securities are so surrendered for exchange, the Company shall
execute, and the Trustee shall authenticate and deliver, the Securities which
the Holder making the exchange is entitled to receive.

         All Securities issued upon any registration of transfer or exchange of
Securities shall be the valid obligations of the Company, evidencing the same
debt, and (subject to the provisions in the Original Securities regarding the
payment of Special Interest) entitled to the same benefits under this Indenture,
as the Securities surrendered upon such registration of transfer or exchange.

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

         No service charge shall be made to the Holder for any registration of
transfer or exchange of Securities, 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 Securities, other
than exchanges pursuant to Section 304, 305(d), 906 or 1108 or in accordance
with any Offer to Purchase pursuant to Section 1013 or 1017 not involving any
transfer.

                                      -52-
<PAGE>

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

         (b) Certain Transfers and Exchanges. Notwithstanding any other
provision of this Indenture or the Securities, transfers and exchanges of
Securities and beneficial interests in a Global Security of the kinds specified
in this Section 305(b) shall be made only in accordance with this Section
305(b).

                  (i) Restricted Global Security to Regulation S Global
         Security. If the owner of a beneficial interest in the Restricted
         Global Security wishes at any time to transfer such interest to a
         Person who wishes to acquire the same in the form of a beneficial
         interest in the Regulation S Global Security, such transfer may be
         effected only in accordance with the provisions of this Clause (b)(i)
         and Clause (b)(v) below and subject to the Applicable Procedures. Upon
         receipt by the Trustee, as Security Registrar, of (A) an order given by
         the Depositary or its authorized representative directing that a
         beneficial interest in the Regulation S Global Security in a specified
         principal amount be credited to a specified Agent Member's account and
         that a beneficial interest in the Restricted Global Security in an
         equal principal amount be debited from another specified Agent Member's
         account and (B) a Regulation S Certificate, satisfactory to the Trustee
         and duly executed by the owner of such beneficial interest in the
         Restricted Global Security or his attorney duly authorized in writing,
         then the Trustee, as Security Registrar but subject to Clause (b)(v)
         below, shall reduce the principal amount of the Restricted Global
         Security and increase the principal amount of the Regulation S Global
         Security by such specified principal amount as provided in Section
         305(e). 

                  (ii) Regulation S Global Security to Restricted Global
         Security. If the owner of a beneficial interest in the Regulation S
         Global Security wishes at any time to transfer such interest to a
         Person who wishes to acquire

                                      -53-
<PAGE>

         the same in the form of a beneficial interest in the Restricted Global
         Security, such transfer may be effected only in accordance with this
         Clause (b)(ii) and subject to the Applicable Procedures. Upon receipt
         by the Trustee, as Security Registrar, of (A) an order given by the
         Depositary or its authorized representative directing that a beneficial
         interest in the Restricted Global Security in a specified principal
         amount be credited to a specified Agent Member's account and that a
         beneficial interest in the Regulation S Global Security in an equal
         principal amount be debited from another specified Agent Member's
         account and (B) if such transfer is to occur during the Restricted
         Period, a Restricted Securities Certificate, satisfactory to the
         Trustee and duly executed by the owner of such beneficial interest in
         the Regulation S Global Security or his attorney duly authorized in
         writing, then the Trustee, as Security Registrar, shall reduce the
         principal amount of the Regulation S Global Security and increase the
         principal amount of the Restricted Global Security by such specified
         principal amount as provided in Section 305(e).

                  (iii) Non-Global Security to Non-Global Security. A Security
         that is not a Global Security may be transferred, in whole or in part,
         to a Person who takes delivery in the form of another Security that is
         not a Global Security as provided in Section 305(a), provided that, if
         the Security to be transferred in whole or in part is a Restricted
         Security, or is a Regulation S Security and the transfer is to occur
         during the Restricted Period, then the Trustee shall have received (A)
         a Restricted Securities Certificate, satisfactory to the Trustee and
         duly executed by the transferor Holder or his attorney duly authorized
         in writing, in which case the transferee Holder shall take delivery in
         the form of a Restricted Security, or (B) a Regulation S Certificate,
         satisfactory to the Trustee and duly executed by the transferor Holder
         or his attorney duly authorized in writing, in which case the
         transferee Holder shall take delivery in the form of a Regulation S
         Security (subject in every case to Section 305(c)).

                  (iv) Exchanges between Global Security and Non-Global
         Security. A beneficial interest in a Global Security may be exchanged
         for a Security that is not a Global Security as provided in Section
         305(d), provided that, if such

                                      -54-
<PAGE>

         interest is a beneficial interest in the Restricted Global Security, or
         if such interest is a beneficial interest in the Regulation S Global
         Security and such exchange is to occur during the Restricted Period,
         then such interest shall be exchanged for a Restricted Security
         (subject in each case to Section 305(c)).

                  (v) Regulation S Global Security to be Held Through Euroclear
         or Cedel during Restricted Period. The Company shall use its best
         efforts to cause the Depositary to ensure that, until the expiration of
         the Restricted Period, beneficial interests in the Regulation S Global
         Security may be held only in or through accounts maintained at the
         Depositary by Euroclear or Cedel (or by Agent Members acting for the
         account thereof), and no person shall be entitled to effect any
         transfer or exchange that would result in any such interest being held
         otherwise than in or through such an account; provided that this Clause
         (b)(v) shall not prohibit any transfer or exchange of such an interest
         in accordance with Clause (b)(ii) above.

         (c) Securities Act Legends. Rule 144A Securities and their Successor
Securities shall bear a Restricted Securities Legend, and the Regulation S
Securities and their Successor Securities shall bear a Regulation S Legend,
subject to the following:

                  (i) subject to the following Clauses of this Section 305(c), a
         Security or any portion thereof which is exchanged, upon transfer or
         otherwise, for a Global Security or any portion thereof shall bear the
         Securities Act Legend borne by such Global Security while represented
         thereby;

                  (ii) subject to the following Clauses of this Section 305(c),
         a new Security which is not a Global Security and is issued in exchange
         for a Global Security or any portion thereof, upon transfer or
         otherwise, shall bear the Securities Act Legend borne by such other
         Security, provided that, if such new Security is required pursuant to
         Section 305(b)(iii) or (iv) to be issued in the form of a Restricted
         Security, it shall bear a Restricted Securities Legend and, if such new
         Security is so required to be issued in the form of a Regulation S
         Security, it shall bear a Regulation S Legend;

                                      -55-
<PAGE>

                  (iii) Registered Securities shall not bear a Securities Act
         Legend;

                  (iv) at any time after the Securities may be freely
         transferred without registration under the Securities Act or without
         being subject to transfer restrictions pursuant to the Securities Act,
         a new Security which does not bear a Securities Act Legend may be
         issued in exchange for or in lieu of a Security (other than a Global
         Security) or any portion thereof which bears such a legend if the
         Trustee has received an Unrestricted Securities Certificate,
         satisfactory to the Trustee and duly executed by the Holder of such
         legended Security or his attorney duly authorized in writing, and after
         such date and receipt of such certificate, the Trustee shall
         authenticate and deliver such a new Security in exchange for or in lieu
         of such other Security as provided in this Article Three;

                  (v) a new Security which does not bear a Securities Act Legend
         may be issued in exchange for or in lieu of a Security (other than a
         Global Security) or any portion thereof which bears such a legend if,
         in the Company's judgment, placing such a legend upon such new Security
         is not necessary to ensure compliance with the registration
         requirements of the Securities Act, and the Trustee, at the direction
         of the Company, shall authenticate and deliver such a new Security as
         provided in this Article Three; and

                  (vi) notwithstanding the foregoing provisions of this Section
         305(c), a Successor Security of a Security that does not bear a
         particular form of Securities Act Legend shall not bear such form of
         legend unless the Company has reasonable cause to believe that such
         Successor Security is a "restricted security" within the meaning of
         Rule 144, in which case the Trustee, at the direction of the Company,
         shall authenticate and deliver a new Security bearing a Restricted
         Securities Legend in exchange for such Successor Security as provided
         in this Article Three.

         (d) Exchanges of Global Security for Non-Global Security.
Notwithstanding any other provision in this Indenture, no Global Security may be
exchanged in whole or

                                      -56-
<PAGE>

in part for Securities registered, and no transfer of a Global Seccurity in
whole or in part may be registered, in the name of any Person other than the
Depositary for such Global Security or a nominee thereof unless (i) the
Depositary (x) notifies the Company that it is unwilling or unable to continue
as Depositary for the Global Security or (y) has ceased to be a clearing agency
registered under the Exchange Act, and in either case the Company thereupon
fails to appoint a successor Depositary, (ii) the Company, at its option,
notifies the Trustee in writing that it elects to cause the issuance of the
Securities in certificated form or (iii) there shall have occurred and be
continuing an Event of Default or any event which after notice or lapse of time
or both would be an Event of Default with respect to the Securities.

         (e) If any Global Security is to be exchanged for other Securities or
cancelled in whole, it shall be surrendered by or on behalf of the Depositary or
its nominee to the Trustee, as Security Registrar, for exchange or cancellation
as provided in this Article Three. If any Global Security is to be exchanged for
other Securities or cancelled in part, or if another Security is to be exchanged
in whole or in part for a beneficial interest in any Global Security, then
either (i) such Global Security shall be so surrendered for exchange or
cancellation as provided in this Article Three or (ii) the principal amount
thereof shall be reduced or increased by an amount equal to the portion thereof
to be so exchanged or cancelled, or equal to the principal amount of such other
Security to be so exchanged for a beneficial interest therein, as the case may
be, by means of an appropriate adjustment made on the records of the Trustee, as
Security Registrar, whereupon the Trustee, in accordance with the Applicable
Procedures, shall instruct the Depositary or its authorized representative to
make a corresponding adjustment to its records. Upon any such surrender or
adjustment of a Global Security, the Trustee shall, subject to Section 305(b)
and as otherwise provided in this Article Three, authenticate and deliver any
Securities issuable in exchange for such Global Security (or any portion
thereof) to or upon the order of, and registered in such names as may be
directed by, the Depositary or its authorized representative. Upon the request
of the Trustee in connection with the occurrence of any of the events specified
in the preceding paragraph, the Company shall

                                      -57-
<PAGE>

promptly make available to the Trustee a reasonable supply of Securities that
are not in the form of Global Securities. The Trustee shall be entitled to rely
upon any order, direction or request of the Depositary or its authorized
representative which is given or made pursuant to this Article Three if such
order, direction or request is given or made in accordance with the Applicable
Procedures.

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

         If any mutilated Security is surrendered to the Trustee, the Company
shall execute and the Trustee shall authenticate and deliver in exchange
therefor a new Security of like tenor and principal amount and bearing a number
not contemporaneously outstanding.

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

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

         Upon the issuance of any new Security under this Section, 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 Security issued pursuant to this Section in lieu of any
destroyed, lost or stolen Security shall constitute an original additional
contractual obligation of the Company, whether or not the destroyed, lost or
stolen

                                      -58-
<PAGE>

Security shall be at any time enforceable by anyone, and shall be entitled to
all the benefits of this Indenture equally and proportionately with any and all
other Securities duly issued hereunder.

         The provisions of this Section 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 Securities.

SECTION 307. Payment of Interest; Interest Rights Preserved.

         Interest on any Security 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 that Security (or one or more Predecessor Securities) is registered
at the close of business on the Regular Record Date for such interest.

         Any interest (including Special Interest) on any Security which is
payable, but is not punctually paid or duly provided for, on any Interest
Payment Date (herein called "Defaulted Interest") shall (a) bear interest at the
rate per annum stated in the form of Security included herein (to the extent
that the payment of such interest shall be legally enforceable), and (b)
forthwith cease to be payable to the Holder on the relevant Regular Record Date
by virtue of having been such Holder, and such 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 Securities (or their
         respective Predecessor Securities) are registered at the close of
         business on a 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 on each Security 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

                                      -59-
<PAGE>

         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 pro posed
         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
         mailed, first-class postage prepaid, to each Holder at his address as
         it appears in the Security Register, 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
         mailed, such Defaulted Interest shall be paid to the Persons in whose
         names the Securities (or their respective Predecessor Securities) 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 Securities 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, each Security
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Security shall carry the rights to interest accrued
and unpaid, and to accrue, which were carried by such other Security.

                                      -60-
<PAGE>

SECTION 308. Persons Deemed Owners.

         Prior to due presentment of a Security 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 Security is registered as the owner of such
Security for the purpose of receiving payment of principal of and premium, if
any, and (subject to Section 307) interest on such Security and for all other
purposes whatsoever, whether or not such Security be overdue, and neither the
Company, the Trustee nor any agent of the Company or the Trustee shall be
affected by notice to the contrary.

SECTION 309. Cancellation.

         All Securities surrendered for payment, redemption, registration of
transfer, exchange or pursuant to any Offer to Purchase pursuant to Section 1013
or 1017 shall, if surrendered to any Person other than the Trustee, be delivered
to the Trustee and shall be promptly cancelled by it. The Company may at any
time deliver to the Trustee for cancellation any Securities previously
authenticated and delivered hereunder which the Company may have acquired in any
manner whatsoever, and all Securities so delivered shall be promptly cancelled
by the Trustee. No Securities shall be authenticated in lieu of or in exchange
for any Securities cancelled as provided in this Section, except as expressly
permitted by this Indenture. All cancelled Securities held by the Trustee shall
be disposed of in accordance with its standard procedures or as directed by a
Company Order; provided, however, that the Trustee shall not be required to
destroy such Securities.

SECTION 310. Computation of Interest.

         Interest on the Securities shall be computed on the basis of a 360-day
year of twelve 30-day months, provided, however, that Special Interest on
Original Securities shall

                                      -61-
<PAGE>

be computed on the basis of a 365- or 366-day year, as the case may be, and the
number of days actually elapsed.

SECTION 311. CUSIP and ISIN Numbers.

         The Company in issuing Securities may use "CUSIP" and "ISIN" numbers
(if then generally in use) in addition to serial numbers; if so, the Trustee
shall use such "CUSIP" and "ISIN" numbers in addition to serial numbers in
notices of redemption and repurchase as a convenience to Holders; provided that
any such notice may state that no representation is made as to the correctness
of such CUSIP and ISIN numbers either as printed on the Securities or as
contained in any notice of a redemption or repurchase and that reliance may be
placed only on the serial or other identification numbers printed on the
Securities, and any such redemption or repurchase shall not be affected by any
defect in or omission of such CUSIP and ISIN numbers.

                                  ARTICLE FOUR
                           Satisfaction and Discharge

SECTION 401. Satisfaction and Discharge of Indenture.

         This Indenture shall cease to be of further effect as to all
outstanding Securities (except as to (i) rights of registration of transfer and
exchange and the Company's right of optional redemption, (ii) substitution of
apparently mutilated, defaced, destroyed, lost or stolen Securities, (iii)
rights of holders of Securities to receive payment of principal of and premium,
if any, and interest on the Securities, (iv) rights, obligations and immunities
of the Trustee under the Indenture and (v) rights of the holders of the
Securities as beneficiaries of the Indenture with respect to any property
deposited with the Trustee payable to all or any of them), and the Trustee, on
demand of and at the expense of the Company, shall execute proper instruments
acknowledging satisfaction and discharge of this Indenture, when

         (1)  either

               (A)  the Company will have paid or caused to be
         paid the principal of and premium, if any, and interest

                                      -62-
<PAGE>

         on the Notes as and when the same will have become due
         and payable; or

               (B) all outstanding Notes (except lost, stolen or destroyed Notes
         which have been replaced or paid) have been delivered to the Trustee
         for cancellation;

         and the Company, in the case of (A) above, has deposited or caused to
         be deposited with the Trustee as trust funds in trust for the purpose
         an amount sufficient to pay and discharge the entire indebtedness on
         such Securities not theretofore delivered to the Trustee for
         cancellation, for principal of and premium, if any, and interest to the
         date of such deposit (in the case of Securities which have become due
         and payable) or to the Stated Maturity or Redemption Date, 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 Officers' 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, (i) the
obligations of the Company to the Trustee under Section 607, (ii) substitution
of apparently mutilated, defaced, destroyed, lost or stolen Securities, (iii)
rights of holders of Securities to receive payment of principal of and premium,
if any, and interest on the Securities, (iv) rights, obligations and immunities
of the Trustee under this Indenture (including, 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), and (v) rights of holders of the Securities as beneficiaries
of this Indenture with respect to any property deposited with the Trustee
payable to all or any of them, shall survive.

SECTION 402. Application of Trust Money.

                                      -63-
<PAGE>

         Subject to the provisions of the last paragraph of Section 1003, all
money deposited with the Trustee pursuant to Section 401 shall be held in trust
and applied by it, in accordance with the provisions of the Securities 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 upon any Security when it
     becomes due and payable, and continuance of such default for a period of 30
     days; or

         (2)  default in the payment of the principal of (or premium, if any, 
     on) any Security when due; or

         (3) default in the payment of principal and interest upon any Security
     required to be purchased pursuant to an Offer to Purchase pursuant to
     Sections 1013 or 1017; or

         (4)  default in the performance, or breach, of Section 801, 1013 or 
     1017; or

         (5) default in the performance, or breach, of any covenant or warranty
     of the Company in this Indenture or in any Security (other than a covenant
     or warranty a default in whose performance or whose breach is elsewhere in
     this Section specifically dealt with), and continuance of such default or
     breach for a period of 60 days after

                                      -64-
<PAGE>

     there has been given, by registered or certified mail, to the Company by
     the Trustee or to the Company and the Trustee by the Holders of at least
     25% in aggregate principal amount of the Outstanding Securities a written
     notice specifying such default or breach and requiring it to be remedied
     and stating that such notice is a "Notice of Default" hereunder; or

         (6) a default or defaults under any bond(s), debenture(s), note(s) or
     other evidence(s) of indebtedness by the Company or any Subsidiary of the
     Company or under any mortgage(s), indenture(s) or instrument(s) under which
     there may be issued or by which there may be secured or evidenced any
     indebtedness of such type by the Company or any such Subsidiary with a
     principal amount then outstanding, individually or in the aggregate, in
     excess of $5 million, whether such indebtedness now exists or shall
     hereafter be created, which default or defaults shall constitute a failure
     to pay in excess of $5 million of the principal of such indebtedness when
     due at the final maturity thereof, or shall have resulted in excess of
     $5 million of indebtedness becoming or being declared due and payable prior
     to the date on which it would otherwise have become due and payable; or

         (7) a final judgment or final judgments for the payment of money are
     entered against the Company or any Subsidiary in an aggregate amount in
     excess of $5 million by a court or courts of competent jurisdiction, which
     judgments remain undischarged or unbonded for a period (during which
     execution shall not be effectively stayed) of 45 days after the right to
     appeal all such judgments has expired; or

         (8) the entry by a court having jurisdiction in the premises of (A) a
     decree or order for relief in respect of the Company or any of its
     Subsidiaries in an involuntary case or proceeding under any applicable
     Federal or State bankruptcy, insolvency, reorganization or other similar
     law or (B) a decree or order adjudging the Company or any of its
     Subsidiaries a bankrupt or insolvent, or approving as properly filed a
     petition seeking reorganization, arrangement, adjustment or composition of
     or in respect of the Company or any of its Subsidiaries under any
     applicable Federal or State law, or appointing a custodian, receiver,
     liquidator,

                                      -65-
<PAGE>

     assignee, trustee, sequestrator or other similar official of the Company or
     any of its Subsidiaries or of any substantial part of its property, or
     ordering the winding up or liquidation of its affairs, and the continuance
     of any such decree or order for relief or any such other decree or order
     unstayed and in effect for a period of 60 consecutive days; or

         (9) the commencement by the Company or any of its Subsidiaries of a
     voluntary case or proceeding under any applicable Federal or State
     bankruptcy, insolvency, reorganization or other similar law or of any other
     case or proceeding to be adjudicated a bankrupt or insolvent, or the
     consent by it to the entry of a decree or order for relief in respect of
     the Company or any of its Subsidiaries in an involuntary case or proceeding
     under any applicable Federal or State bankruptcy, insolvency,
     reorganization or other similar law or to the commencement of any
     bankruptcy or insolvency case or proceeding against it, or the filing by it
     of a petition or answer or consent seeking reorganization or relief under
     any applicable Federal or State law, or the consent by it to the filing of
     such petition or to the appointment of or taking possession by a custodian,
     receiver, liquidator, assignee, trustee, sequestrator or other similar
     official of the Company or any of its Subsidiaries or of any substantial
     part of its property, or the making by it of an assignment for the benefit
     of creditors, or the admission by it in writing of its inability to pay its
     debts generally as they become due, or the taking of corporate action by
     the Company or any of its Subsidiaries in furtherance of any such action.

SECTION 502. Acceleration of Maturity; Rescission and Annulment.

         If an Event of Default (other than an Event of Default specified in
Section 501(8) or (9)) occurs and is continuing, then and in every such case the
Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Securities may declare the principal amount of all the Securities to
be due and payable immediately, by a notice in writing to the Company (and to
the Trustee if given by Holders), and upon any such declaration such principal
amount and any accrued interest shall become

                                      -66-
<PAGE>

immediately due and payable. If an Event of Default specified in Section 501(8)
or (9) occurs, the principal amount of and any accrued interest on the
Securities then Outstanding shall ipso facto become immediately due and payable
without any declaration or other Act on the part of the Trustee or any Holder.

         At any time after such a declaration of acceleration has been made and
before a judgment or decree for payment of the money due based on acceleration
has been obtained by the Trustee as hereinafter in this Article provided, the
Holders of a majority in principal amount of the Outstanding Securities, by
written notice to the Company and the Trustee, may rescind and annul such
declaration and its consequences if:

         (1) the Company has paid or deposited with the Trustee a sum sufficient
     to pay

               (A) all overdue interest on all Securities,

               (B) the principal of (and premium, if any, on) any Securities
         which have become due otherwise than by such declaration of
         acceleration (including any Securities required to have been purchased
         on the Purchase Date pursuant to an Offer to Purchase made by the
         Company) and interest thereon at the rate borne by the Securities,

               (C) to the extent that payment of such interest is lawful,
         interest upon overdue interest at the rate borne by the Securities, and

               (D) all sums paid or advanced by the Trustee hereunder and the
         reasonable compensation, expenses, disbursements and advances of the
         Trustee, its agents and counsel;

     and

         (2) all Events of Default, other than the non-payment of the principal
     of Securities which have become due solely by such declaration of
     acceleration, have been cured or waived as provided in Section 513.

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

                                      -67-
<PAGE>

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

         The Company covenants that if

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

         (2) default is made in the payment of the principal of (or premium, if
     any, on) any Security at the Maturity thereof or, with respect to any
     Security required to have been purchased pursuant to an Offer to Purchase
     made by the Company, at the Purchase Date thereof,

the Company will, upon demand of the Trustee, pay to it, for the benefit of the
Holders of such Securities, the whole amount then due and payable on such
Securities for principal (and premium, if any) and interest, and, to the extent
that payment of such interest shall be legally enforceable, interest on any
overdue principal (and premium, if any) and on any overdue interest, at the rate
provided by the Securities, and, in addition thereto, such further amount as
shall be sufficient to cover the costs and expenses of collection, including the
reasonable compensation, 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 and 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 Securities 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 Securities, 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
effective to protect and enforce any such rights, whether

                                      -68-
<PAGE>

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 any judicial proceeding relative to the Company (or any
other obligor upon the Securities), its property or its creditors, the Trustee
shall be entitled and empowered, by intervention in such proceeding or
otherwise, to take any and all actions authorized under the Trust Indenture Act
in order to have claims of the Holders and the Trustee allowed in any such
proceeding. In particular, the Trustee shall be authorized to collect and
receive any moneys, securities or other property payable or deliverable upon the
exchange of the Securities or upon any such claims and to distribute the same;
and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
other 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 to 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 607.

         No provision of this Indenture 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
Securities 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; provided,
however, that the Trustee may, on behalf of the Holders, vote for the election
of a trustee in bankruptcy or similar official and be a member of a creditors or
other similar committee.

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

         All rights of action and claims under this Indenture or the Securities
may be prosecuted and enforced by the Trustee without the possession of any of
the Securities or the

                                      -69-
<PAGE>

production thereof in any proceeding relating thereto, and any such proceeding
instituted by the Trustee shall be brought in its own name as trustee of an
express trust, and any recovery of judgment shall, after provision for the
payment of the reasonable compensation, expenses, disbursements and advances of
the Trustee, its agents and counsel, be for the ratable benefit of the Holders
of the Securities 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 Securities 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 607; and

         SECOND: To the payment of the amounts then due and unpaid for principal
     of (and premium, if any) and interest on the Securities 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 Securities for principal (and premium, if any) and
     interest, respectively.

SECTION 507. Limitation on Suits.

         No Holder of any Security 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

         (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 Securities shall have

                                      -70-
<PAGE>

     made written request to the Trustee to institute proceedings in respect of
     such Event of Default in its own name as Trustee hereunder;

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

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

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

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 Security shall have the right, which is absolute and unconditional, to
receive payment of the principal of (and premium, if any) and (subject to
Section 307) interest on such Security on the respective Stated Maturities
expressed in such Security (or, in the case of redemption, on the Redemption
Date or, in the case of an Offer to Purchase made by the Company and required to
be accepted as to such Security, on the Purchase Date) and to institute suit for
the enforcement of any such payment, and such rights shall not be impaired
without the consent of such Holder.

                                      -71-
<PAGE>

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
there after 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 Securities 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 Security 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.

                                      -72-
<PAGE>

         The Holders of a majority in principal amount of the Outstanding
Securities 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) such direction shall not be in conflict with any rule of law or
     with this Indenture or expose the Trustee to personal liability (as
     determined in the sole discretion of the Trustee), and

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

SECTION 513. Waiver of Past Defaults.

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

         (1) in the payment of the principal of (or premium, if any) or interest
     on any Security (including any Security which is required to have been
     purchased pursuant to an Offer to Purchase which has been made by the
     Company), 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 Security affected or

         (3) arising from failure to purchase any Security tendered pursuant to
     Sections 1013 and 1017 of this Indenture.

         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 impair any right consequent thereon.

                                      -73-
<PAGE>

SECTION 514. Undertaking for Costs.

         In any suit for the enforcement of any right or remedy under this
Indenture, or in any suit against the Trustee for any action taken or omitted by
it as Trustee, a court may require any party litigant in such suit to file an
under taking to pay the costs of such suit, and may assess costs against any
such party litigant, in the manner and to the extent provided in the Trust
Indenture Act; provided, that neither this Section nor the Trust Indenture Act
shall be deemed to authorize any court to require such an undertaking or to make
such an assessment in any suit instituted by the Company; further provided, that
the provisions of this Section 514 shall not apply to any suit instituted by the
Trustee, to any suit instituted by any Holder or group of Holders holding more
than 10% in aggregate principal amount of the Outstanding Securities, or to any
suit instituted by any Holder for the enforcement of the payment of the
principal of, or premium, if any, or interest on any Security on or after the
respective due dates expressed in such Security.

SECTION 515. Waiver of Stay or Extension Laws.

         The Company covenants (to the extent that it may lawfully do so) that
it will 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 will not hinder, delay or impede the execution of any
power herein granted to the Trustee, but will suffer and permit the execution of
every such power as though no such law had been enacted.

                                   ARTICLE SIX
                                   The Trustee

SECTION 601. Certain Duties and Responsibilities.

                                      -74-
<PAGE>

     (a)  Except during the continuance of an Event of Default,

         (1) the Trustee undertakes to perform such duties and only such duties
     as are specifically set forth in this Indenture, and no implied covenants
     or obligations shall be read into this Indenture against the Trustee; and

         (2) in the absence of bad faith on its part, the Trustee may
     conclusively rely, as to the truth of the statements and the correctness of
     the opinions expressed therein, upon certificates or opinions furnished to
     the Trustee and conforming to the requirements of this Indenture; but in
     the case of any such certificates or opinions which by any provision hereof
     are specifically required to be furnished to the Trustee, the Trustee shall
     be under a duty to examine the same to determine whether or not they
     conform to the requirements of this Indenture.

    (b) 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 man would exercise or use under the circumstances in the conduct of his
own affairs.

    (c) No provision of this Indenture shall be construed to relieve the
Trustee from liability for its own negligent action, its own negligent failure
to act, or its own willful misconduct, except that

         (1)  this Subsection shall not be construed to limit the effect of 
     Subsection (a) of this Section;

         (2) the Trustee shall not be liable for any error of judgment made in
     good faith by a Responsible Officer, unless it shall be proved that the
     Trustee was negligent in ascertaining the pertinent facts;

         (3) the Trustee shall not be liable with respect to any action taken or
     omitted to be taken by it in good faith in accordance with the direction of
     the Holders of a majority in principal amount of the Outstanding Securities
     relating to the time, method and place of conducting any proceeding for any
     remedy available to the

                                      -75-
<PAGE>

     Trustee, or exercising any trust or power conferred upon the Trustee, under
     this Indenture; and

         (4) no provision of this Indenture shall require the Trustee 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.

    (d) Whether or not therein expressly so provided, every provision of
this Indenture relating to the conduct or affecting the liability of or
affording protection to the Trustee shall be subject to the provisions of this
Section.

SECTION 602. Notice of Defaults.

         The Trustee shall give the Holders notice of any default hereunder
known to the Trustee as and to the extent provided by the Trust Indenture Act;
provided, however, that in the case of any default of the character specified in
Section 501(5), no such notice to Holders shall be given until at least 30 days
after the occurrence thereof. For the purpose of this Section, the term
"default" means any event which is, or after notice or lapse of time or both
would become, an Event of Default.

SECTION 603. Certain Rights of Trustee.

         Subject to the provisions of Section 601:

         (a) 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;

         (b)  any request or direction of the Company mentioned herein shall be 
     sufficiently evidenced by a Company

                                      -76-
<PAGE>

     Request or Company Order and any resolution of the Board of Directors may 
     be sufficiently evidenced by a Board Resolution;

         (c) 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, rely upon an Officers' Certificate;

         (d) the Trustee may consult with counsel of its selection 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;

         (e) 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 reasonably satisfactory to the Trustee;

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

         (g) 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

                                      -77-
<PAGE>

     negligence on the part of any agent or attorney appointed with due care by
     it hereunder;

         (h) the Trustee shall not be liable with respect to any action taken,
     suffered or omitted to be taken by it in accordance with the direction of
     Holders of Outstanding Securities as provided in Sections 502, 512 and 513
     hereof; and

         (i) for all purposes under this Indenture, the Trustee shall not be
     deemed to have notice of any Event of Default unless a Responsible Officer
     of the Trustee has actual knowledge thereof or unless written notice of any
     event which is in fact such a default is received by the Trustee at the
     Corporate Trust Office of the Trustee, and such notice references the
     Securities and this Indenture.

SECTION 604. Not Responsible for Recitals or Issuance of Securities.

         The recitals contained herein and in the Securities, except the
Trustee's 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 Securities. The Trustee shall not be accountable for the use
or application by the Company of Securities or the proceeds thereof.

SECTION 605. May Hold Securities.

         The Trustee, any Paying Agent, any Security Registrar or any other
agent of the Company, in its individual or any other capacity, may become the
owner or pledgee of Securities and, subject to Sections 608 and 613, may
otherwise deal with the Company with the same rights it would have if it were
not Trustee, Paying Agent, Security Registrar or such other agent.

SECTION 606. Money Held in Trust.

         Money held by the Trustee in trust hereunder need not be segregated
from other funds except to the extent required

                                      -78-
<PAGE>

by law. The Trustee shall be under no liability for interest on any money
received by it hereunder except as otherwise agreed with the Company.

SECTION 607. 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 (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 (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 negligence or bad faith on its
     part, arising out of or in connection with the acceptance or administration
     of this trust, including the costs and expenses of enforcing this Indenture
     against the Company (including, without limitation, this Section 607) and
     of defending itself against any claim (whether asserted by any Holder or
     the Company) or liability in connection with the exercise or performance of
     any of its powers or duties hereunder. The provisions of this Section 607
     shall survive any termination of this Indenture and the resignation or
     removal of the Trustee.

         As security for the performance of the obligations of the Company under
this Section 607, the Trustee shall have a lien prior to the Securities upon all
property and funds held or collected by the Trustee, except funds held in trust
for the payment of principal of (and premium, if any) or interest on particular
Securities. The Trustee's right to receive payment of any amounts due under this
Section 607 shall not be subordinate to any other liability or indebtedness of
the Company (even though the Securities may be so subordinated).

                                      -79-
<PAGE>

         When the Trustee incurs expenses or renders services in connection with
an Event of Default specified in Section 501(8) or Section 501(9), the expenses
(including the reasonable charges and expenses of its counsel) and the
compensation for the services are intended to constitute expenses of
administration under any applicable Federal or state bankruptcy, insolvency or
other similar law.

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

SECTION 608. Disqualification; Conflicting Interests.

         If the Trustee has or shall acquire a conflicting interest within the
meaning of the Trust Indenture Act, the Trustee shall either eliminate such
interest or resign, to the extent and in the manner provided by, and subject to
the provisions of, the Trust Indenture Act and this Indenture.

SECTION 609. Corporate Trustee Required; Eligibility.

         There shall at all times be a Trustee hereunder which shall be a Person
that is eligible pursuant to the Trust Indenture Act to act as such and has a
combined capital and surplus of at least $50,000,000 and its Corporate Trust
Office in the Borough of Manhattan, The City of New York, New York. If such
Person publishes reports of condition at least annually, pursuant to law or to
the requirements of a 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 Person 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, it shall resign immediately in the manner
and with the effect hereinafter specified in this Article.

SECTION 610. 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

                                      -80-
<PAGE>

effective until the acceptance of appointment by the successor Trustee under
Section 611, at which time the retiring Trustee shall be fully discharged from
its obligations hereunder.

         (b) The Trustee may resign at any time by giving written notice thereof
to the Company. If an instrument of acceptance by a successor Trustee 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 a
majority in principal amount of the Outstanding Securities, delivered to the
Trustee and to the Company.

         (d)  If at any time:

         (1) the Trustee shall fail to comply with Section 608 after written
     request therefor by the Company or by any Holder who has been a bona fide
     Holder of a Security for at least six months, or

         (2) the Trustee shall cease to be eligible under Section 609 and shall
     fail to resign after written request therefor by the Company or by any such
     Holder, 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 Section 514, any Holder who has been a bona fide
Holder of a Security 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

                                      -81-
<PAGE>

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 principal amount of the
Outstanding Securities 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 Security 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 all Holders in the
manner provided in Section 106. Each notice shall include the name of the
successor Trustee and the address of its Corporate Trust Office.

SECTION 611. 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 all sums owing
to the Trustee under Section 607, execute and deliver 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

                                      -82-
<PAGE>

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 612. 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 the corporate trust business
of the Trustee, shall be the successor of the Trustee hereunder, provided that
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 Securities 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 Securities so authenticated with the same effect
as if such successor Trustee had itself authenticated such Securities.

SECTION 613. Preferential Collection of Claims Against Company.

         If and when the Trustee shall be or become a creditor of the Company
(or any other obligor upon the Securities), the Trustee shall be subject to the
provisions of the Trust Indenture Act regarding the collection of claims against
the Company (or any such other obligor).

SECTION 614. Appointment of Authenticating Agent.

         The Trustee may appoint an Authenticating Agent or Agents with respect
to the Securities which shall be authorized to act on behalf of the Trustee to
authenticate Securities issued upon original issue and upon exchange,

                                      -83-
<PAGE>

registration of transfer or partial redemption thereof or pursuant to Section
306, and Securities so authenticated shall be entitled to the benefits of this
Indenture and shall be valid and obligatory for all purposes as if authen-
ticated by the Trustee hereunder. Wherever reference is made in this Indenture
to the authentication and delivery of Securities by the Trustee or the Trustee's
certificate of authentication, such reference shall be deemed to include
authentication and delivery on behalf of the Trustee by an Authenticating Agent
and a certificate of authentication executed on behalf of the Trustee by an
Authenticating Agent. Each Authenticating Agent shall be acceptable to the
Company and shall at all times be a corporation organized and doing business
under the laws of the United States of America, any State thereof or the
District of Columbia, authorized under such laws to act as Authenticating Agent,
having a combined capital and surplus of not less than $50,000,000 and subject
to supervision or examination by Federal or State authority. If such
Authenticating Agent publishes reports of condition at least annually, pursuant
to law or to the requirements of said supervising or examining authority, then
for the purposes of this Section, the combined capital and surplus of such
Authenticating Agent 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 an
Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, such Authenticating Agent shall resign immediately
in the manner and with the effect specified in this Section.

         Any corporation into which an Authenticating Agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which such Authenticating Agent
shall be a party, or any corporation succeeding to the corporate agency or
corporate trust business of an Authenticating Agent, shall continue to be an
Authenticating Agent, provided such corporation shall be otherwise eligible
under this Section, without the execution or filing of any paper or any further
act on the part of the Trustee or the Authenticating Agent.

         An Authenticating Agent may resign at any time by giving written notice
thereof to the Trustee and to the Company. The Trustee may at any time terminate
the agency of an Authenticating Agent by giving written notice thereof to

                                      -84-
<PAGE>

such Authenticating Agent and to the Company. Upon receiving such a notice of
resignation or upon such a termination, or in case at any time such
Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, the Trustee may appoint a successor Authenticating
Agent which shall be acceptable to the Company and shall give notice of such
appointment in the manner provided in Section 106 to all Holders of Securities.
Any successor Authenticating Agent upon acceptance of its appointment hereunder
shall become vested with all the rights, powers and duties of its predecessor
hereunder, with like effect as if originally named as an Authenticating Agent.
No successor Authenticating Agent shall be appointed unless eligible under the
provisions of this Section.

         The Trustee agrees to pay to each Authenticating Agent from time to
time reasonable compensation for its services under this Section, and the
Trustee shall be entitled to be reimbursed for such payments, subject to the
provisions of Section 607.

         If an appointment is made pursuant to this Section, the Securities may
have endorsed thereon, in lieu of the Trustee's certificate of authentication,
an alternative certificate of authentication in the following form:

         This is one of the Securities referred to in the within-mentioned
Indenture.

Dated:

                                        THE BANK OF NEW YORK,
                                                                      As Trustee

                                        By.....................................,
                                                         As Authenticating Agent

                                        By......................................
                                                            Authorized Signatory

                                      -85-
<PAGE>
                                  ARTICLE SEVEN
                Holders' Lists and Reports by Trustee and Company

SECTION 701. Company to Furnish Trustee Names and Addresses of Holder.

         The Company will furnish or cause to be furnished to the Trustee

         (a) semi-annually, not more than 15 days after each Regular Record
     Date, a list, in such form as the Trustee may reasonably require, of the
     names and addresses of the Holders as of such Regular Record Date, and

         (b) at such other times as the Trustee may request in writing, within
     30 days after the receipt by the Company of any such request, a list of
     similar form and content as of a date not more than 15 days prior to the
     time such list is furnished;

excluding from any such list names and addresses received by the Trustee in its
capacity as Security Registrar.

SECTION 702. Preservation of Information; Communications to Holders.

         (a) The Trustee shall preserve, in as current a form as is reasonably
practicable, the names and addresses of Holders contained in the most recent
list furnished to the Trustee as provided in Section 701 and the names and
addresses of Holders received by the Trustee in its capacity as Security
Registrar. The Trustee may destroy any list furnished to it as provided in
Section 701 upon receipt of a new list so furnished.

         (b) The rights of Holders to communicate with other Holders with
respect to their rights under this Indenture or under the Securities, and the
corresponding rights and duties of the Trustee, shall be as provided by the
Trust Indenture Act.

         (c) Every Holder of Securities, by receiving and holding the same,
agrees with the Company and the Trustee that neither the Company nor the Trustee
nor any agent of either of them shall be held accountable by reason of any

                                      -86-
<PAGE>

disclosure of information as to names and addresses of Holders made pursuant to
the Trust Indenture Act.

SECTION 703. Reports by Trustee.

         (a) Within 60 days after May 15 of each year, commencing with the first
May 15 following the first issuance of Securities pursuant to Section 301, if
required by Section 313(a) of the Trust Indenture Act, the Trustee shall
transmit, pursuant to Section 313(c) of the Trust Indenture Act, a brief report
dated as of such May 15 with respect to any of the events specified in said
Section 313(a) which may have occurred since the later of the immediately
preceding May 15 and the date of this Indenture.

         (b) The Trustee shall transmit the reports required by Section 313(b)
of the Trust Indenture Act and Section 602 hereof at the times specified
therein.

         (c) Reports pursuant to this Section shall be transmitted in the manner
and to the persons required by Sections 313(c) and 313(d) of the Trust Indenture
Act.

         (d) A copy of each such report shall, at the time of such transmission
to Holders, be filed by the Trustee with each stock exchange upon which the
Securities are listed, with the Commission and with the Company. The Company
will promptly notify the Trustee when the Securities are listed on any stock
exchange.

SECTION 704. Reports by Company.

         The Company shall file with the Trustee and the Commission, and
transmit to Holders, such information, documents and other reports, and such
summaries thereof, as may be required pursuant to the Trust Indenture Act at the
times and in the manner provided pursuant to such Act and in the manner set
forth in Section 1018; provided that any such information, documents or reports
required to be filed with the Commission pursuant to Section 13 or 15(d) of the
Exchange Act ("SEC Reports") shall be filed with the Trustee within 15 days
after the same is so required to be filed with the Commission. In the event the
Company shall cease to be required to file SEC Reports pursuant to the Exchange

                                      -87-
<PAGE>

Act, the Company will nonetheless continue to file such reports with the
Commission (unless the Commission will not accept such a filing) and the Trustee
and to furnish copies of such SEC Reports to the Holders of Securities at the
time the Company is required to file such reports with the Trustee and will make
such information available to investors who request it in writing.

SECTION 705. Officers' Certificate with Respect to Change in Interest Rates.

         Within five days after any Step-Up, Second Step-Up, Step-Down Date or
Second Step-Down Date, the Company shall deliver an Officers' Certificate to the
Trustee stating the new interest rate and the date on which it became effective.

                                  ARTICLE EIGHT
                           Merger, Consolidation, Etc.

SECTION 801. Mergers, Consolidations and Certain Sales of Assets.

         The Company shall not, in a single transaction or a series of related
transactions, (i) consolidate with or merge into any other Person or permit any
other Person to consolidate with or merge into the Company or (ii) directly or
indirectly, transfer, sell, lease or otherwise dispose of all or substantially
all of its assets to any other Person, unless, in any such transaction specified
in Clause (i) or (ii):

         (1) immediately before and after giving effect to such transaction and
     treating any Debt that becomes an obligation of the Company or a
     Subsidiary of the Company, as a result of such transaction, as having been
     Incurred by the Company or such Subsidiary at the time of the transaction,
     no Event of Default or event that with the passing of time or the giving of
     notice, or both, would constitute an Event of Default, shall have occurred
     and be continuing;

         (2)  in case the Company shall consolidate with or

                                      -88-
<PAGE>

     merge with or into another Person or permit any other Person to consolidate
     with or merge into the Company, or shall directly or indirectly transfer,
     sell, lease or otherwise dispose of all or substantially all of its
     properties or assets to any other Person, the Person formed by such
     consolidation or into which the Company is merged or the Person which
     acquires by transfer, conveyance, sale, lease or otherwise all or
     substantially all of the assets of the Company (for purposes of this
     Section 801, a "Successor Company") shall be a corporation, partnership,
     or trust and shall be organized and validly existing under the laws of the
     United States of America, any State thereof or the District of Columbia and
     shall expressly assume, by an indenture supplemental hereto, executed and
     delivered to the Trustee in form satisfactory to the Trustee, all of the
     Company's obligations under this Indenture, including the due and punctual
     payment of the principal of and premium, if any, and interest on all the
     Securities, and the performance of every covenant of this Indenture on the
     part of the Company to be performed or observed;

         (3) immediately after giving effect to such transaction, (i) the
     Consolidated Net Worth of the Company (or other successor entity to the
     Company) is equal to or greater than that of the Company immediately prior
     to the transaction, and (ii) and treating any Debt which becomes an
     obligation of the Company or a Subsidiary as a result of such transaction
     as having been Incurred by the Company or such Subsidiary at the time of
     the transaction, the Company (including any successor entity to the
     Company) could Incur at least $1.00 of additional Debt pursuant to the
     provisions of the first paragraph of Section 1008 of this Indenture;

         (4) if, as a result of any such transaction, property or assets of the
     Company would become subject to a Lien which would not be permitted by
     Section 1015, the Company or, if applicable, the Successor Company, as the
     case may be, shall take such steps as shall be necessary effectively to
     secure the Securities as required by Section 1015 of this Indenture; and

         (5) the Company has delivered to the Trustee an Officer's Certificate
     and an Opinion of Counsel, each in form and substance satisfactory to the
     Trustee stating

                                      -89-
<PAGE>

     that such consolidation, merger, conveyance, transfer, lease or acquisition
     and, if a supplemental indenture is required in connection with such
     transaction, such supplemental indenture, complies with this Article and
     that all conditions precedent herein provided for relating to such
     transaction have been complied with, and, with respect to such Officer's
     Certificate, setting forth the manner of determination of the Consolidated
     Net Worth in accordance with Clause (3) of Section 801, of the Company or,
     if applicable, of the Successor Company as required pursuant to the
     foregoing.

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 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 thereafter, except in
the case of a lease, the predecessor Person shall be relieved of all obligations
and covenants under this Indenture and the Securities.

                                  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

                                      -90-
<PAGE>

     the Company and the assumption by any such successor of the covenants of 
     the Company herein and in the Securities; or

         (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 secure the Securities pursuant to the requirements of Section
     1015 or otherwise; or

         (4) to modify, eliminate or add to the provisions of this Indenture to
     such extent as shall be necessary to comply with any requirement of the
     Commission in order to effect qualification of this Indenture under the
     Trust Indenture Act in connection with the issuance of Exchange Securities
     or thereafter to maintain the qualification of this Indenture under the
     Trust Indenture Act;

         (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 which shall not be inconsistent with the provisions of
     this Indenture, provided that such action pursuant to this Clause (5) shall
     not adversely affect the interests of the Holders in any material respect;
     or

         (6) to provide for uncertificated Securities in addition to or in place
     of certificated Securities.

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 Securities, by Act of said Holders
delivered to the Company and the Trustee, and consistent with Section 513, the
Company, when authorized by a Board Resolution, and the Trustee may enter into
an indenture or indentures supple mental 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 Security affected thereby,

                                      -91-
<PAGE>

         (1) change the Stated Maturity of the principal of, or any installment
     of interest on, any Security, or reduce the principal amount thereof or the
     rate of interest thereon or any premium payable thereon, or change the
     place of payment where, or the coin or currency in which, any Security or
     any premium or interest thereon is payable, or impair the right to
     institute suit for the enforcement of any such payment on or after the
     Stated Maturity thereof (or, in the case of redemption, on or after the
     Redemption Date) or, in the case of an Offer to Purchase which has been
     made, on or after the applicable Purchase Date, or

         (2) reduce the percentage in principal amount of the Outstanding
     Securities, the consent of whose Holders is required for any such
     supplemental indenture, or the consent of whose Holders is required for any
     waiver (of compliance with certain provisions of this Indenture or certain
     defaults hereunder and their consequences) provided for in this Indenture,
     or

         (3) modify any of the provisions of this Section, Section 513 or
     Section 1020, 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 Security affected
     thereby, or

         (4) following the making of an Offer with respect to an Offer to
     Purchase pursuant to Sections 1013 or 1017, modify the provisions of this
     Indenture with respect to such Offer to Purchase in a manner adverse to
     such Holder.

         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

                                      -92-
<PAGE>

Article or the modifications thereby of the trusts created by this Indenture,
the Trustee shall be entitled to receive, and (subject to Section 601) 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 Trustee's 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 Securities theretofore or thereafter authenticated and delivered hereunder
shall be bound thereby.

SECTION 905. Conformity with Trust Indenture Act.

         Every supplemental indenture executed pursuant to this Article shall
conform to the requirements of the Trust Indenture Act.

SECTION 906. Reference in Securities to Supplemental Indentures.

         Securities 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 Securities 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 authenticated and delivered by the Trustee in exchange for
Outstanding Securities.

                                      -93-
<PAGE>
                                   ARTICLE TEN
                                    Covenants

SECTION 1001. Payment of Principal, Premium and Interest.

         The Company will duly and punctually pay the principal of and premium,
if any, and interest on the Securities in accordance with the terms of the
Securities and this Indenture.

SECTION 1002. Maintenance of Office or Agency.

         The Company will maintain in the Borough of Manhattan, The City of New
York, New York, an office or agency where Securities may be presented or
surrendered for payment, where Securities may be surrendered for registration of
transfer or exchange and where notices and demands to or upon the Company in
respect of the Securities and this Indenture may be served. The Company will
give prompt written notice to the Trustee of the location, and any change in the
location, of 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.

         The Company may also from time to time designate one or more other
offices or agencies (in or outside the Borough of Manhattan, The City of New
York, New York) where the Securities may be presented or surrendered for any or
all such purposes and may from time to time rescind such designations; 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 Borough of
Manhattan, The City of New York, New York for such purposes. The Company will 
give prompt written notice to the Trustee of any such designation or rescission 
and of any change in the location of any such other office or agency.

SECTION 1003. Money for Security Payments to be Held in Trust.

                                      -94-
<PAGE>

         If the Company shall at any time act as its own Paying Agent, it will,
on or before each due date of the principal of (and premium, if any) or interest
on any of the Securities, segregate and hold in trust for the benefit of the
Persons entitled thereto a sum sufficient to pay the principal (and 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 will promptly notify the Trustee
in writing of its action or failure so to act. As provided in Section 504, upon
any bankruptcy or reorganization proceeding relative to the Company, the Trustee
shall serve as the Paying Agent for the Securities.

         Whenever the Company shall have one or more Paying Agents, it will,
prior to each due date of the principal of (and premium, if any) or interest on
any Securities, 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 will
promptly notify the Trustee in writing of its action or failure so to act. As
provided in Section 504, upon any bankruptcy or reorganization proceeding
relative to the Company, the Trustee shall serve as the Paying Agent for the
Securities.

         The Company will 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, that
such Paying Agent will:

         (1) hold all sums held by it for the payment of the principal of (and
     premium, if any) or interest on Securities 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 Securities) in the making of any payment of principal (and
     premium, if any) or interest;

         (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; and

                                      -95-
<PAGE>

         (4) acknowledge, accept and agree to comply in all respects with the
     provisions of this Indenture relating to the duties, rights and obligations
     of 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 trusts as those upon which such sums were 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 money.

         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 (and premium, if
any) or interest on any Security and remaining unclaimed for two years after
such principal (and premium, if any) 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 of such Security
shall there after, 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, 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 will be repaid to the Company.

SECTION 1004. Existence.

         Subject to Article Eight, the Company will do or cause

                                      -96-
<PAGE>

to be done all things necessary to preserve and keep in full force and effect
its existence, rights (charter and statutory) and franchises; 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 that the loss
thereof is not disadvantageous in any material respect to the Holders.

SECTION 1005. Maintenance of Properties.

         The Company will cause all properties used or useful 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 will cause to be made all necessary repairs, renewals, replacements,
betterments and improvements there of, 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
operation or maintenance of any of such properties if such discontinuance is, as
determined in the good faith judgment of the Board of Directors evidenced by a
Board Resolution, desirable in the conduct of its business or the business of
any Subsidiary and not disadvantageous in any material respect to the Holders.

SECTION 1006. Payment of Taxes and Other Claims.

         The Company will pay or discharge or cause to be paid or discharged,
before the same shall become delinquent, (1) all taxes, assessments and
governmental charges levied or imposed upon the Company or any of its
Subsidiaries or upon the income, profits or property of the Company or any of
its Subsidiaries, and (2) all lawful claims for labor, materials and supplies
which, if unpaid, might by law become a lien upon the property of the Company or
any of its Subsidiaries; 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.

                                      -97-
<PAGE>

SECTION 1007. Maintenance of Insurance.

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

SECTION 1008. Limitation on Consolidated Debt.

         The Company shall not, and shall not permit any Subsidiary of the
Company to, Incur or suffer to exist any Debt unless either (a) the ratio of (i)
the aggregate consolidated principal amount of Debt of the Company outstanding
as of the most recent available quarterly or annual balance sheet, after giving
pro forma effect to the Incurrence of such Debt and any other Debt Incurred
since such balance sheet date and the receipt and application of the proceeds
thereof, to (ii) Consolidated Cash Flow Available for Fixed Charges for the four
full fiscal quarters next preceding the Incurrence of such Debt for which
consolidated financial statements are available, determined on a pro forma basis
as if any such Debt had been Incurred and the proceeds thereof had been applied
at the beginning of such four fiscal quarters, would be less than 5.5 to 1.0 for
such four-quarter periods ending on or prior to December 31, 1999 and 5.0 to 1.0
for such periods ending thereafter, or (b) the Company's Consolidated Capital
Ratio as of the most recent available quarterly or annual balance sheet, after
giving pro forma effect to the Incurrence of such Debt and any other Debt
Incurred since such balance sheet date and the receipt and application of the
proceeds thereof, is less than 2.0 to 1.0.

         Notwithstanding the foregoing limitation, the Company and any
Subsidiary may Incur the following:

         (i) Debt under Secured Credit Facilities in an aggregate principal
amount at any one time not to exceed $160 million, and any renewal, extension,
refinancing or refunding thereof in an amount which, together with any

                                      -98-
<PAGE>

principal amount remaining outstanding or available under all Secured Credit
Facilities, does not exceed the aggregate principal amount outstanding or
available under all Secured Credit Facilities immediately prior to such renewal,
extension, refinancing or refunding;

         (ii) Purchase Money Debt, which is incurred for the construction,
acquisition and improvement of Telecommunications Assets, provided that the
amount of such Purchase Money Debt does not exceed 80% of the cost of the
construction, acquisition or improvement of the applicable Telecommunications
Assets;

         (iii) Debt owed by the Company to any Wholly-Owned Subsidiary of the
Company or Debt owed by a Subsidiary of the Company to the Company or a
Wholly-Owned Subsidiary of the Company; provided, however, that upon either (x)
the transfer or other disposition by such Wholly-Owned Subsidiary or the Company
of any Debt so permitted to a Person other than the Company or another
Wholly-Owned Subsidiary of the Company or (y) the issuance (other than
directors' qualifying shares), sale, lease, transfer or other disposition of
shares of Capital Stock (including by consolidation or merger) of such
Wholly-Owned Subsidiary to a Person other than the Company or another such
Wholly-Owned Subsidiary, the provisions of this clause (iii) shall no longer be
applicable to such Debt and such Debt shall be deemed to have been Incurred at
the time of such transfer or other disposition;

         (iv) Debt Incurred to renew, extend, refinance or refund (each, a
"refinancing") Debt outstanding at the date of this Indenture or Incurred
pursuant to clause (ii) of this paragraph or the Securities in an aggregate
principal amount not to exceed the aggregate principal amount of and accrued
interest on the Debt so refinanced plus the amount of any premium required to be
paid in connection with such refinancing pursuant to the terms of the Debt so
refinanced or the amount of any premium reasonably determined by the Company as
necessary to accomplish such refinancing by means of a tender offer or privately
negotiated repurchase, plus the expenses of the Company incurred in connection
with such refinancing; provided, however, that Debt the proceeds of which are
used to refinance the Securities or Debt which is pari passu to the Securities
or Debt which is subordinate in

                                      -99-
<PAGE>

right of payment to the Securities shall only be permitted if (A) in the case of
any refinancing of the Securities or Debt which is pari passu to the Securities,
the refinancing Debt is made pari passu to the Securities or constitutes
Subordinated Debt, and, in the case of any refinancing of Subordinated Debt, the
refinancing Debt constitutes Subordinated Debt and (B) in any case, the
refinancing Debt by its terms, or by the terms of any agreement or instrument
pursuant to which such Debt is issued, (x) does not provide for payments of
principal of such Debt at stated maturity or by way of a sinking fund applicable
thereto or by way of any mandatory redemption, defeasance, retirement or
repurchase thereof by the Company (including any redemption, retirement or
repurchase which is contingent upon events or circumstances, but excluding any
retirement required by virtue of the acceleration of any payment with respect to
such Debt upon any event of default thereunder), in each case prior to the time
the same are required by the terms of the Debt being refinanced and (y) does not
permit redemption or other retirement (including pursuant to an offer to
purchase made by the Company) of such Debt at the option of the holder thereof
prior to the time the same are required by the terms of the Debt being
refinanced, other than a redemption or other retirement at the option of the
holder of such Debt (including pursuant to an offer to purchase made by the
Company) which is conditioned upon a change of control pursuant to provisions
substantially similar to the provisions of Section 1017 of this Indenture;

         (v) Debt consisting of Permitted Interest Rate and Currency Protection
Agreements; and

         (vi) Debt not otherwise permitted to be Incurred pursuant to clauses
(i) through (v) above, which, together with any other outstanding Debt Incurred
pursuant to this clause (vi), has an aggregate principal amount not in excess of
$10 million at any time outstanding.

SECTION 1009. Limitation on Debt and Preferred Stock of Subsidiaries.

         The Company shall not permit any Subsidiary of the Company that is not
a Guarantor to Incur or suffer to exist any Debt or issue any Preferred Stock
except:

                                     -100-
<PAGE>

         (i) Debt or Preferred Stock outstanding on the date of this Indenture
after giving effect to the application of the proceeds of the Securities;

         (ii) Debt Incurred or Preferred Stock issued to and held by the Company
or a Wholly-Owned Subsidiary of the Company (provided that such Debt or
Preferred Stock is at all times held by the Company or a Wholly-Owned Subsidiary
of the Company);

         (iii) Debt Incurred or Preferred Stock issued by a Person prior to the
time (A) such Person became a Subsidiary of the Company, (B) such Person merges
into or consolidates with a Subsidiary of the Company or (C) another Subsidiary
of the Company merges into or consolidates with such Person (in a transaction in
which such Person becomes a Subsidiary of the Company), which Debt or Preferred
Stock was not Incurred or issued in anticipation of such transaction and was
outstanding prior to such transaction;

         (iv) Debt consisting of Permitted Interest Rate and Currency Protection
Agreements;

         (v) Debt or Preferred Stock of a Joint Venture;

         (vi) Debt under a Secured Credit Facility which is permitted to be
outstanding under clause (i) of the second paragraph of Section 1008 of this
Indenture; and

         (vii) Debt or Preferred Stock which is exchanged for, or the proceeds
of which are used to refinance, refund or redeem, any Debt or Preferred Stock
permitted to be outstanding pursuant to clauses (i) and (iii) hereof (or any
extension or renewal thereof) (for purposes hereof, a "refinancing"), in an
aggregate principal amount, in the case of Debt, or with an aggregate
liquidation preference in the case of Preferred Stock, not to exceed the
aggregate principal amount of the Debt so refinanced or the aggregate
liquidation preference of the Preferred Stock so refinanced, plus the amount of
any premium required to be paid in connection with such refinancing pursuant to
the terms of the Debt or Preferred Stock so refinanced or the amount of any
premium reasonably determined by the Company as necessary to accomplish such
refinancing by means of a tender offer or privately negotiated repurchase, plus
the amount of expenses of the Company and the applicable

                                      -101-
<PAGE>

Subsidiary Incurred in connection therewith and provided the Debt or Preferred
Stock Incurred or issued upon such refinancing is by its terms, or by the terms
of any agreement or instrument pursuant to which such Debt or Preferred Stock is
Incurred or issued, (x) does not provide for payments of principal or
liquidation value at the stated maturity of such Debt or Preferred Stock or by
way of a sinking fund applicable to such Debt or Preferred Stock or by way of
any mandatory redemption, defeasance, retirement or repurchase of such Debt or
Preferred Stock by the Company or any Subsidiary of the Company (including any
redemption, retirement or repurchase which is contingent upon events or
circumstances, but excluding any retirement required by virtue of acceleration
of such Debt upon an event of default thereunder), in each case prior to the
time the same are required by the terms of the Debt or Preferred Stock being
refinanced and (y) does not permit redemption or other retirement (including
pursuant to an offer to purchase made by the Company or a Subsidiary of the
Company) of such Debt or Preferred Stock at the option of the holder thereof
prior to the stated maturity of the Debt or Preferred Stock being refinanced,
other than a redemption or other retirement at the option of the holder of such
Debt or Preferred Stock (including pursuant to an offer to purchase made by the
Company or a Subsidiary of the Company) which is conditioned upon the change of
control of the Company pursuant to provisions substantially similar to the
provisions of Section 1017 of this Indenture and provided, further, that in the
case of any exchange or redemption of Preferred Stock of a Subsidiary of the
Company, such Preferred Stock may only be exchanged for or redeemed with
Preferred Stock of such Subsidiary.

SECTION 1010. Limitation on Restricted Payments.

         The Company (i) shall not, directly or indirectly, declare or pay any
dividend, or make any distribution, in respect of its Capital Stock or to the
holders thereof, excluding any dividends or distributions payable solely in
shares of its Capital Stock (other than Disqualified Stock) or in options,
warrants or other rights to acquire its Capital Stock (other than Disqualified
Stock), (ii) shall not, and shall not permit any Subsidiary to, purchase,
redeem, or otherwise retire or acquire for value (a) any Capital Stock of the
Company or any Related Person of the

                                     -102-
<PAGE>

Company (other than a permitted refinancing) or (b) any options, warrants or
rights to purchase or acquire shares of Capital Stock of the Company or any
Related Person of the Company or any securities convertible or exchangeable into
shares of Capital Stock of the Company or any Related Person of the Company
(other than a permitted refinancing), (iii) shall not make, or permit any
Subsidiary to make, any Investment in, or payment on a Guarantee of any
obligation of, any Affiliate or any Related Person, other than the Company or an
80% or more owned Subsidiary of the Company which is an 80% or more owned
Subsidiary prior to such Investment, and which Subsidiary (other than a
wholly-owned Subsidiary) was not established or formed in anticipation or in
furtherance of such investment, except for Permitted Investments, and (iv) shall
not, and shall not permit any Subsidiary to, redeem, defease, repurchase, retire
or otherwise acquire or retire for value, prior to any scheduled maturity,
repayment or sinking fund payment, Debt of the Company which is subordinate in
right of payment to the Securities (each of clauses (i) through (iv) being a
"Restricted Payment") if: (1) an Event of Default, or an event that with the
passing of time or the giving of notice, or both, would constitute an Event of
Default, shall have occurred and be continuing, or (2) upon giving effect to
such Restricted Payment, the Company could not Incur at least $1.00 of
additional Debt pursuant to the provisions of the first paragraph of Section
1008 of this Indenture, or (3) upon giving effect to such Restricted Payment,
the aggregate of all Restricted Payments from February 26, 1996
exceeds the sum of: (a) 50% of cumulative Consolidated Net Income (or, in the
case Consolidated Net Income shall be negative, less 100% of such deficit) since
the end of the last full fiscal quarter prior to February 26, 1996 through the
last day of the last full fiscal quarter ending immediately preceding the date
of such Restricted Payment; plus (b) $5.0 million; provided, however, that the
Company or a Subsidiary of the Company may make any Restricted Payment with the
aggregate net proceeds received after February 26, 1996, including the fair
value of property other than cash (determined in good faith by the Board of
Directors as evidenced by a resolution of the Board of Directors filed with the
Trustee), as capital contributions to the Company or from the issuance (other
than to a Subsidiary) of Capital Stock (other than Disqualified Stock) of the
Company and warrants, rights or options on Capital

                                     -103-
<PAGE>

Stock (other than Disqualified Stock) of the Company and the principal amount of
Debt of the Company that has been converted into Capital Stock (other than
Disqualified Stock and other than by a Subsidiary) of the Company after February
26, 1996.

         Notwithstanding the foregoing, (i) the Company may pay any dividend on
Capital Stock of any class of the Company within 60 days after the declaration
thereof if, on the date when the dividend was declared, the Company could have
paid such dividend in accordance with the foregoing provisions, (ii) the Company
may repurchase any shares of its Common Stock or options to acquire its Common
Stock from Persons who were formerly directors, officers or employees of the
Company or any of its Subsidiaries, provided that the aggregate amount of all
such repurchases made pursuant to this clause (ii) shall not exceed $2.0
million, plus the aggregate cash proceeds received by the Company since February
26, 1996 from issuances of its Common Stock or options to acquire its Common
Stock to directors, officers and employees of the Company or any of its
Subsidiaries, (iii) the Company and its Subsidiaries may refinance any Debt
otherwise permitted by clause (iv) of the second paragraph of Section 1008 of
this Indenture, and (iv) the Company and its Subsidiaries may retire or
repurchase any Capital Stock of the Company or of any Subsidiary of the Company
in exchange for, or out of the proceeds of the substantially concurrent sale
(other than to a Subsidiary of the Company) of, Capital Stock (other than
Disqualified Stock) of the Company.

SECTION 1011. Limitation on Dividend and Other Payment Restrictions Affecting 
              Subsidiaries.

         The Company shall not, and shall not permit any Subsidiary to, directly
or indirectly, create or otherwise cause or suffer to exist or become effective
any consensual encumbrance or restriction on the ability of any Subsidiary of
the Company (i) to pay dividends (in cash or otherwise) or make any other
distributions in respect of its Capital Stock owned by the Company or any other
Subsidiary of the Company or pay any Debt or other obligation owed to the
Company or any other Subsidiary; (ii) to make loans or advances to the Company
or any other Subsidiary; or (iii) to transfer any of its property or assets to
the Company or any

                                     -104-
<PAGE>

other Subsidiary. Notwithstanding the foregoing, the Company may, and may permit
any Subsidiary to, suffer to exist any such encumbrance or restriction (a)
pursuant to any agreement in effect on the date of this Indenture; (b) pursuant
to an agreement relating to any Acquired Debt, which encumbrance or restriction
is not applicable to any Person, or the properties or assets of any Person,
other than the Person so acquired; (c) pursuant to an agreement effecting a
renewal, refunding or extension of Debt Incurred pursuant to an agreement
referred to in clause (a) or (b) above, provided, however, that the provisions
contained in such renewal, refunding or extension agreement relating to such
encumbrance or restriction are no more restrictive in any material respect than
the provisions contained in the agreement the subject thereof, (d) in the case
of clause (iii) above, restrictions contained in any security agreement
(including a Capital Lease Obligation) securing Debt of the Company or a
Subsidiary otherwise permitted under this Indenture, but only to the extent such
restrictions restrict the transfer of the property subject to such security
agreement; (e) in the case of clause (iii) above, customary nonassignment
provisions entered into in the ordinary course of business in leases and other
agreements; (f) any restriction with respect to a Subsidiary of the Company
imposed pursuant to an agreement which has been entered into for the sale or
disposition of all or substantially all of the Capital Stock or assets of such
Subsidiary, provided that the consummation of such transaction would not result
in an Event of Default or an event that, with the passing of time or the giving
of notice or both, would constitute an Event of Default, that such restriction
terminates if such transaction is not consummated and that the consummation or
abandonment of such transaction occurs within one year of the date such
agreement was entered into; (g) pursuant to applicable law; and (h) pursuant to
this Indenture and the Securities.

SECTION 1012. Limitation on Transactions with Affiliates and Related Persons.

         The Company shall not, and shall not permit any Subsidiary of the
Company to, enter into any transaction (or series of related transactions) with
an Affiliate or Related Person of the Company (other than the Company or a
Wholly-

                                      -105-
<PAGE>

Owned Subsidiary of the Company), including any Investment, but excluding
transactions pursuant to employee compensation arrangements approved by the
Board of Directors of the Company, either directly or indirectly, unless such
transaction is on terms no less favorable to the Company or such Subsidiary than
those that could be obtained in a comparable arm's-length transaction with an
entity that is not an Affiliate or Related Person and is in the best interests
of such Company or such Subsidiary. For any transaction that involves in excess
of $1.0 million but less than or equal to $5.0 million, the Chief Executive
Officer of the Company shall determine that the transaction satisfies the above
criteria and shall evidence such a determination by a certificate filed with the
Trustee. For any transaction that involves in excess of $5.0 million, a majority
of the disinterested members of the Board of Directors shall determine that the
transaction satisfies the above criteria and shall evidence such a determination
by a Board Resolution filed with the Trustee.

SECTION 1013.  Limitation on Asset Dispositions.

         (a) The Company shall not, and shall not permit any Subsidiary to, make
any Asset Disposition in one or more related transactions occurring within any
12-month period unless (i) the Company or the Subsidiary, as the case may be,
receives consideration for such disposition at least equal to the fair market
value for the assets sold or otherwise disposed of (which shall be as determined
in good faith by the Board of Directors, evidenced by a Board Resolution filed
with the Trustee); (ii) at least 75% of the consideration for such disposition
shall consist of (1) cash or readily marketable cash equivalents or the
assumption of Debt of the Company (other than Debt that is subordinated to the
Securities) or of the Subsidiary and release from all liability on the Debt
assumed, (2) Telecommunications Assets, or (3) shares of publicly-traded Voting
Stock of any Person engaged in the Telecommunications Business in the United
States; and (iii) all Net Available Proceeds, less any amounts invested within
360 days of such disposition in new Telecommunications Assets, are applied
within 360 days of such disposition (A) first, to the permanent repayment or
reduction of Debt then outstanding under any Secured Credit Facility, to the
extent such agreements would require such application or prohibit payments
pursuant to clause (B)

                                     -106-
<PAGE>

following, (B) second, to the extent of any remaining Net Available Proceeds, to
make an Offer to Purchase outstanding Securities at 100% of their principal
amount plus accrued and unpaid interest thereon to the date of purchase and, to
the extent required by the terms thereof, any other Debt of the Company that is
pari passu with the Securities at a price no greater than 100% of the principal
amount thereof plus accrued interest to the date of purchase (or 100% of the
accreted value in the case of original issue discount Debt), (C) third, to the
extent of any remaining Net Available Proceeds following the completion of the
Offer to Purchase, to the repayment of other Debt of the Company or Debt of a
Subsidiary of the Company, to the extent permitted under the terms thereof, and
(D) fourth, to the extent of any remaining Net Available Proceeds, to any other
use as determined by the Company which is not otherwise prohibited by this
Indenture.

         (b) The Company will mail the Offer for an Offer to Purchase required
pursuant to Section 1013(a) not more than 360 days after consummation of the
disposition referred to in Section 1013(a). The aggregate principal amount of
the Securities to be offered to be purchased pursuant to the Offer to Purchase
shall equal the Net Available Proceeds available therefor pursuant to Clause
(iii)(B) of Section 1013(a) (rounded down to the next lowest integral multiple
of $1,000). Each Holder shall be entitled to tender all or any portion of the
Securities owned by such Holder pursuant to the Offer to Purchase, subject to
the requirement that any portion of a Security tendered must be tendered in an
integral multiple of $1,000 principal amount.

         The Company shall not be entitled to any credit against its obligations
under this Section 1013 for the principal amount of any Securities acquired or
redeemed by the Company otherwise than pursuant to the Offer to Purchase
pursuant to this Section 1013.

         (c) Not later than the date of the Offer with respect to an Offer to
Purchase pursuant to this Section 1013, the Company shall deliver to the Trustee
an Officers' Certificate as to (i) the Purchase Amount, (ii) the allocation of
the Net Available Proceeds from the Asset Disposition pursuant to which such
Offer is being made, including, if amounts are invested in Telecommunication
Assets, the

                                     -107-
<PAGE>

actual assets acquired and (iii) the compliance of such allocation with the
provisions of Section 1013(a).

         The Company and the Trustee shall perform their respective obligations
specified in the Offer for the Offer to Purchase. On or prior to the Purchase
Date, the Company shall (i) accept for payment (on a pro rata basis, if
necessary) Securities or portions thereof tendered pursuant to the Offer, (ii)
deposit with the paying agent (or, if the Company is acting as its own Paying
Agent, segregate and hold in trust as provided in Section 1003) money sufficient
to pay the purchase price of all Securities or portions thereof so accepted and
(iii) deliver or cause to be delivered to the Trustee all Securities so
accepted together with an Officers' Certificate stating the Securities or
portions thereof accepted for payment by the Company. The Paying Agent (or the
Company, if so acting) shall promptly mail or deliver to Holders of Securities
so accepted payment in an amount equal to the purchase price, and the Trustee
shall promptly authenticate and mail or deliver to such Holders a new Security
of like tenor equal in principal amount to any unpurchased portion of the
Security surrendered. Any Security not accepted for payment shall be promptly
mailed or delivered by the Company to the Holder thereof.

         (d) Notwithstanding the foregoing, this Section 1013 shall not apply to
any Asset Disposition which constitutes a transfer, conveyance, sale, lease or
other disposition of all or substantially all of the Company's properties or
assets within the meaning of Section 801 hereof.

SECTION 1014. Limitation on Issuances and Sales of Capital Stock of 
              Subsidiaries.

         The Company shall not, and shall not permit any Subsidiary of the
Company to, issue, transfer, convey, sell or otherwise dispose of any shares of
Capital Stock of a Subsidiary of the Company or securities convertible or
exchangeable into, or options, warrants, rights or any other interest with
respect to, Capital Stock of a Subsidiary of the Company to any Person other
than the Company or a Wholly-Owned Subsidiary of the Company except (i) a sale
of all of the Capital Stock of such Subsidiary owned by the Company and any
Subsidiary of the Company that complies with

                                     -108-
<PAGE>

the provisions of Section 1013 of this Indenture to the extent such provisions
apply, (ii) in a transaction that results in such Subsidiary becoming a Joint
Venture, provided such transaction complies with the provisions of Section 1013
of this Indenture to the extent such provisions apply, (iii) if required, the
issuance, transfer, conveyance, sale or other disposition of directors'
qualifying shares, and (iv) Disqualified Stock issued in exchange for, or upon
conversion of, or the proceeds of the issuance of which are used to redeem,
refinance, replace or refund shares of Disqualified Stock of such Subsidiary,
provided that the amounts of the redemption obligations of such Disqualified
Stock shall not exceed the amounts of the redemption obligations of, and such
Disqualified Stock shall have redemption obligations no earlier than those
required by, the Disqualified Stock being exchanged, converted, redeemed,
refinanced, replaced or refunded.

SECTION 1015. Limitation on Liens.

         The Company may not, and may not permit any Subsidiary of the Company
to, Incur or suffer to exist any Lien on or with respect to any property or
assets now owned or hereafter acquired to secure any Debt without making, or
causing such Subsidiary to make, effective provision for securing the Securities
(x) equally and ratably with such Debt as to such property for so long as such
Debt will be so secured or (y) in the event such Debt is Debt of the Company
which is subordinate in right of payment to the Securities, prior to such Debt
as to such property for so long as such Debt will be so secured.

     The foregoing restrictions shall not apply to: (i) Liens existing on the
date of this Indenture and securing Debt outstanding on the date of this
Indenture or Incurred pursuant to any Secured Credit Facility; (ii) Liens
securing Debt in an amount which, together with the aggregate amount of Debt
then outstanding or available under all Secured Credit Facilities (or under
refinancings or amendments of such Secured Credit Facilities), does not exceed
1.5 times the Company's Consolidated Cash Flow Available for Fixed Charges for
the four full fiscal quarters preceding the Incurrence of such Lien for which
consolidated financial statements are available, determined on a pro forma basis
as if such Debt had been Incurred and the proceeds thereof had

                                     -109-
<PAGE>

been applied at the beginning of such four fiscal quarters; (iii) Liens in favor
of the Company or any Wholly-Owned Subsidiary of the Company; (iv) Liens on real
or personal property of the Company or a Subsidiary of the Company acquired,
constructed or constituting improvements made after the date of original
issuance of the Securities to secure Purchase Money Debt which is Incurred for
the construction, acquisition and improvement of Telecommunications Assets and
is otherwise permitted under this Indenture, provided, however, that (a) the
principal amount of any Debt secured by such a Lien does not exceed 100% of such
purchase price or cost of construction or improvement of the property subject to
such Liens, (b) such Lien attaches to such property prior to, at the time of or
within 180 days after the acquisition, completion of construction or
commencement of operation of such property and (c) such Lien does not extend to
or cover any property other than the specific item of property (or portion
thereof) acquired, constructed or constituting the improvements made with the
proceeds of such Purchase Money Debt; (v) Liens to secure Acquired Debt;
provided, however, that (a) such Lien attaches to the acquired asset prior to
the time of the acquisition of such asset and (b) such Lien does not extend to
or cover any other asset; (vi) Liens to secure Debt Incurred to extend, renew,
refinance or refund (or successive extensions, renewals, refinancings or
refundings), in whole or in part, Debt secured by any Lien referred to in the
foregoing clauses (i), (ii), (iv) and (v) so long as such Lien does not extend
to any other property and the principal amount of Debt so secured is not
increased except as otherwise permitted under clause (iv) of Section 1008 of
this Indenture; (vii) Liens not otherwise permitted by the foregoing clauses (i)
through (vi) in an amount not to exceed 5% of the Company's Consolidated
Tangible Assets; and (viii) Permitted Liens.

SECTION 1016. Limitation on Sale and Leaseback Transactions.

         The Company shall not, and shall not permit any Subsidiary of the
Company to, enter into any Sale and Leaseback Transaction unless (i) the Company
or such Subsidiary would be entitled to Incur a Lien to secure Debt by reason of
the provisions of Section 1015 of this

                                     -110-
<PAGE>

Indenture, equal in amount to the Attributable Value of the Sale and Leaseback
Transaction without equally and ratably securing the Securities or (ii) the Sale
and Leaseback Transaction is treated as an Asset Disposition and all of the
conditions of Section 1013 of this Indenture (including the provisions
concerning the application of Net Available Proceeds) are satisfied with respect
to such Sale and Leaseback Transaction, treating all of the consideration
received in such Sale and Leaseback Transaction as Net Available Proceeds for
purposes of such covenant.

SECTION 1017. Change of Control.

         (a) Upon the occurrence of a Change of Control (as defined below), each
Holder of a Security shall have the right to have such Security repurchased by
the Company on the terms and conditions precedent set forth in this Section
1017 and this Indenture. The Company shall, within 30 days following the date of
the consummation of a transaction resulting in a Change of Control, mail an
Offer with respect to an Offer to Purchase all Outstanding Securities at a
purchase price equal to 101% of their principal amount plus accrued interest to
the date of purchase. Installments of interest (including Special Interest)
whose Stated Maturity is on or prior to the Purchase Date shall be payable to
the Holders of such Securities, or one or more Predecessor Securities,
registered as such at the close of business on the relevant Record Dates
according to their terms and the provisions of Section 307. Each Holder shall be
entitled to tender all or any portion of the Securities owned by such Holder
pursuant to the Offer to Purchase, subject to the requirement that any portion
of a Security tendered must be tendered in an integral multiple of $1,000
principal amount.

         (b) The Company and Trustee shall perform their respective obligations
specified in the Offer for the Offer to Purchase. Prior to the Purchase Date,
the Company shall (i) accept for payment Securities or portions thereof tendered
pursuant to the Offer, (ii) deposit with the Paying Agent (or, if the Company is
acting as its own Paying Agent, segregate and hold in trust as provided in
Section 1003) money sufficient to pay the purchase price of all Securities or
portions thereof so accepted and (iii) deliver or cause to be delivered to the
Trustee all Securities so accepted together with an Officers' Certificate
stating the Securities

                                     -111-
<PAGE>

or portions thereof accepted for payment by the Company. The Paying Agent
shall promptly mail or deliver to Holders of Securities so accepted payment in
an amount equal to the purchase price, and the Trustee shall promptly
authenticate and mail or deliver to such Holders a new Security or Securities
equal in principal amount to any unpurchased portion of the Security surrendered
as requested by the Holder. Any Security not accepted for payment shall be
promptly mailed or delivered by the Company to the Holder thereof.

         (c) A "Change of Control" shall be deemed to have occurred in the event
that, after the date of this Indenture, either (A) any Person or any Persons
acting together that would constitute a "group" (a "Group") for purposes of
Section 13(d) of the Exchange Act, or any successor provision thereto, together
with any Affiliates or Related Persons thereof, shall beneficially own (as
defined in Rule 13d-3 of the Exchange Act or any successor provision thereto) at
least 50% of the aggregate voting power of all classes of Voting Stock of the
Company; or (B) any Person or Group, together with any Affiliates or Related
Persons thereof, shall succeed in having a sufficient number of its or their
nominees elected to the Board of Directors of the Company such that such
nominees, when added to any existing director or directors remaining on the
Board of Directors of the Company after such election who was a nominee of or is
an Affiliate or Related Person of such Person or Group (excluding in each case
any nominee that is a Continuing Director), shall constitute a majority of the
Board of Directors of the Company.

         (d) In the event that the Company makes an Offer to Purchase the
Securities, the Company shall comply with any applicable securities laws and
regulations, including any applicable requirements of Section 14(e) of, and Rule
14e-1 under, the Securities Exchange Act of 1934.

SECTION 1018. Provision of Financial Information.

         The Company shall file with the Trustee within 15 days after it files
them with the Commission copies of the annual and quarterly reports and the
information, documents, and other reports that the Company is required to file
with the Commission pursuant to Section 13(a) or 15(d) of the

                                     -112-
<PAGE>

Exchange Act ("SEC Reports"). In the event the Company shall cease to be
required to file SEC Reports pursuant to the Exchange Act, the Company shall
nevertheless continue to file such reports with the Commission (unless the
Commission will not accept such a filing) and the Trustee. The Company shall
furnish copies of the SEC Reports to the holders of Securities at the time the
Company is required to file the same with the Trustee and will make such
information available to investors who request it in writing.

SECTION 1019. Statement by Officers as to Default.

         (a) The Company will deliver to the Trustee, within 120 days after the
end of each fiscal year of the Company ending after the date hereof, an
Officers' Certificate, stating whether or not to the best knowledge of the
signers thereof the Company is in default in the performance and observance of
any of the terms, provisions and conditions of Sections 1004 to 1018, inclusive,
and if the Company shall be in default, specifying all such defaults and the
nature and status thereof of which they may have knowledge.

         (b) The Company shall deliver to the Trustee, as soon as possible and
in any event within 10 days after the Company becomes aware of the occurrence of
an Event of Default or an event which, with notice or the lapse of time or both,
would constitute an Event of Default, an Officers' Certificate setting forth the
details of such Event of Default or default and the action which the Company
proposes to take with respect thereto.

SECTION 1020. Waiver of Certain Covenants.

         The Company may omit in any particular instance to comply with any
covenant or condition set forth in Sections 1004 to 1017, inclusive, if before
or after the time for such compliance the Holders of at least a majority in
aggregate principal amount of the Outstanding Securities shall, by Act of such
Holders, either waive such compliance in such instance or generally waive
compliance with such covenant or condition, but no such waiver shall extend to
or affect such covenant 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

                                     -113-
<PAGE>

the Trustee in respect of any such covenant or condition shall remain in full
force and effect.

                                 ARTICLE ELEVEN
                            Redemption of Securities

SECTION 1101. Right of Redemption.

         (a) The Securities may be redeemed prior to June 1, 2002 only in the
event that the Company receives net proceeds from any sale of its Common Stock
(other than Disqualified Stock) in a Strategic Equity Investment on or before
June 1, 2000, in which case the Company may, at its option, use all or a portion
of any such net proceeds to redeem Securities in a principal amount of up to an
aggregate amount equal to 33 1/3% of the original principal amount of the
Securities provided, however, that Securities in an amount equal to at least 66
2/3% of the original principal amount of the Securities remain outstanding after
such redemption. Such redemption must occur on a Redemption Date within 75 days
of any such sale and upon not less than 30 nor more than 60 days' notice by mail
to each Holder of Securities to be redeemed at such Holder's address appearing
in the Security Register, in amounts of $1,000 or an integral multiple of $1,000
at a Redemption Price of 110% of the principal amount of the Securities plus
accrued interest to but excluding 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 that is on or prior to the Redemption Date).

         (b) The Securities further may be redeemed, as a whole or in part, at
the election of the Company, at any time on or after June 1, 2002 and prior to
maturity, upon not less than 30 nor more than 60 days' notice by mail to each
Holder of Securities to be redeemed at such Holder's address appearing in the
Security Register, in amounts of $1,000 or an integral multiple of $1,000, at
the Redemption Prices specified in the form of Security hereinbefore set forth,
together with accrued interest to, but excluding, the Redemption Date (subject
to the right of Holders of record on the relevant Regular Record Date to receive
Interest due

                                     -114-
<PAGE>

on an Interest Payment Date that is on or prior to the Redemption Date).

SECTION 1102. Applicability of Article.

         Redemption of Securities at the election of the Company, 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 Securities pursuant to
Section 1101 shall be evidenced by a Board Resolution. In case of any redemption
at the election of the Company of less than all the Securities, 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 in writing of such Redemption Date and of the principal amount of
Securities to be redeemed. In the case of any redemption of Securities prior to
the expiration of any restriction on such redemption provided in the terms of
such Securities or elsewhere in this Indenture, the Company shall furnish the
Trustee with an Officers' Certificate evidencing compliance with such
restriction.

SECTION 1104. Securities to Be Redeemed Pro Rata.

         If less than all the Securities are to be redeemed in any redemption,
the Securities to be redeemed shall be selected by the Trustee by prorating, as
nearly as may be practicable, the principal amount of Securities to be redeemed.
In any proration pursuant to this Section, the Trustee shall make such
adjustments, reallocations and eliminations as it shall deem proper to the end
that the principal amount of Securities so prorated shall be $1,000 or a
multiple thereof, by increasing or decreasing or eliminating the amount which
would be allocable to any Holder on the basis of exact proportion by an amount
not exceeding $1,000. The Trustee in its discretion may determine the particular
Securities (if there are more than one) registered in the name of any Holder
which are to be redeemed, in whole or in part.

                                     -115-
<PAGE>

         The Trustee shall promptly notify the Company and each Security
Registrar in writing of the Securities selected for redemption and, in the case
of any Securities 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 the redemption of Securities shall relate,
in the case of any Securities redeemed or to be redeemed only in part, to the
portion of the principal amount of such Securities which has been or is to be
redeemed.

SECTION 1105. Notice of Redemption.

         Notice of redemption shall be given by first-class mail, postage
prepaid, mailed not less than 30 nor more than 60 days prior to the Redemption
Date, to each Holder of Securities to be redeemed, at such Holder's address
appearing in the Security Register.

         All notices of redemption shall state:

         (1)  the Redemption Date,

         (2)  the Redemption Price,

         (3) whether the redemption is being made pursuant to Section 1101(a) or
     (b) and, if being made pursuant to Section 1101(a), a brief statement
     setting forth the Company's right to effect such redemption and the
     Company's basis therefor,

         (4) if less than all the Outstanding Securities are to be redeemed, the
     identification (and, in the case of partial redemption of any Securities,
     the principal amounts) of the particular Securities to be redeemed,

         (5) that on the Redemption Date the Redemption Price will become due
     and payable upon each such Security to be redeemed and that interest
     thereon will cease to accrue on and after said date,

                                     -116-
<PAGE>

         (6) the place or places where such Securities are to be surrendered for
     payment of the Redemption Price, and

         (7) that in the case that a Security is only redeemed in part, the
     Company shall execute and the Trustee shall authenticate and deliver to the
     Holder of such Security without service charge, a new Security or
     Securities in an aggregate amount equal to the unredeemed portion of the
     Security.

         Notice of redemption of Securities to be redeemed at the election of
the Company shall be given by the Company or, at the Company's 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 (except if the Redemption
Date shall be an Interest Payment Date) accrued interest on, all the Securities
which are to be redeemed on that date.

SECTION 1107. Securities Payable on Redemption Date.

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

                                     -117-
<PAGE>

         If any Security 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 provided by the
Security.

SECTION 1108. Securities Redeemed in Part.

         Any Security which is to be redeemed only in part shall be surrendered
at an office or agency of the Company designated for that 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 his attorney duly authorized
in writing), and the Company shall execute, and the Trustee shall authenticate
and deliver to the Holder of such Security without service charge, a new
Security or Securities of like tenor, 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 Security so surrendered.

                                 ARTICLE TWELVE
                       Defeasance and Covenant Defeasance

SECTION 1201. Company's Option to Effect Defeasance or Covenant Defeasance.

         The Company may at its option by Board Resolution, at any time (subject
to 10-day prior written notification to the Trustee), elect to have either
Section 1202 or Section 1203 applied to the Outstanding Securities upon
compliance with the conditions set forth below in this Article Twelve.

SECTION 1202. Defeasance and Discharge.

         Upon the Company's exercise of the option provided in Section 1201
applicable to this Section, the Company shall be deemed to have been discharged
from its obligations with

                                     -118-
<PAGE>

respect to the Outstanding Securities on the date the conditions set forth
below 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 Securities and to have
satisfied all its other obligations under such Securities and this Indenture
insofar as such Securities 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 Securities to receive,
solely from the trust fund described in Section 1204 and as more fully set forth
in such Section, payments in respect of the principal of (and premium, if any)
and interest on such Securities when such payments are due, (B) the Company's
obligations with respect to such Securities under Sections 304, 305, 306, 1002
and 1003, (C) the rights, powers, trusts, duties and immunities of the Trustee 
hereunder and (D) this Article Twelve. Subject to compliance with this 
Article Twelve, the Company may exercise its option under this Section 1202 
notwithstanding the prior exercise of its option under Section 1203.

SECTION 1203. Covenant Defeasance.

         Upon the Company's exercise of the option provided in Section 1201
applicable to this Section (i) the Company shall be released from its
obligations under Sections 1005 through 1018, inclusive, and Clauses (3) and (4)
of Section 801, (ii) the occurrence of an event specified in Sections 501(3),
501(4) (with respect to Clauses (3) and (4) of Section 801), and 501 (5) (with
respect to Sections 1005 through 1018, inclusive) shall not be deemed to be an
Event of Default, on and after the date the conditions set forth below are
satisfied (hereinafter, "covenant defeasance"). For this purpose, such covenant
defeasance means that 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
Section or Article, whether directly or indirectly by reason of any reference
elsewhere herein to any such Section or Article or by reason of any reference in
any such Section or Article to any other provision herein or in any other
document, but the remainder of this Indenture and such Securities shall be
unaffected thereby.

                                     -119-
<PAGE>

SECTION 1204. Conditions to Defeasance or Covenant Defeasance.

         The following shall be the conditions to application of either Section
1202 or Section 1203 to the Outstanding Securities:

         (1) The Company shall irrevocably have deposited or caused to be
     deposited with the Trustee (or another trustee satisfying the requirements
     of Section 609 who shall agree to comply with the provisions of this
     Article Twelve 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 Securities, (A)
     money in an amount, or (B) U.S. Government Obligations which through the
     scheduled payment of principal and interest in respect thereof in
     accordance with their terms will provide, not later than one day before the
     due date of any payment, money in an amount, or (C) a combination thereof,
     sufficient, in the opinion of a nationally recognized accounting firm
     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, the principal of, premium, if
     any, and each installment of interest on the Securities on the Stated
     Maturity of such principal or installment of interest on the day on which
     such payments are due and payable in accordance with the terms of this
     Indenture and of such Securities. For this purpose, "U.S. Government
     Obligations" means securities that are (x) direct obligations of the United
     States of America for the 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
     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

                                     -120-
<PAGE>

     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 Event of Default or event which with notice or lapse of time or
     both would become an Event of Default shall have occurred and be continuing
     on the date of such deposit or, insofar as subsections 501(8) and (9) are
     concerned, at any time during the period ending on the 91st day after the
     date of such deposit (it being understood that this condition shall not be
     deemed satisfied until the expiration of such period).

         (3) Such defeasance or covenant defeasance shall not cause the Trustee
     to have a conflicting interest as defined in Section 608 and for purposes
     of the Trust Indenture Act with respect to any securities of the Company.

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

         (5) The Company shall have delivered to the Trustee an Officers'
     Certificate and an Opinion of Counsel, each stating that all conditions
     precedent provided for relating to either the defeasance under Section 1202
     or the covenant defeasance under Section 1203 (as the case may be) have
     been complied with.

         (6) In the case of an election under Section 1202, 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 the date of this Indenture there has
     been a change in the applicable Federal income tax law, in either case to
     the effect that, and based

                                     -121-
<PAGE>

     thereon such opinion shall confirm that, the Holders of the Outstanding
     Securities will not recognize income, gain or loss for Federal income tax
     purposes as a result of such deposit, defeasance and discharge 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 deposit, defeasance
     and discharge had not occurred.

         (7) In the case of an election under Section 1203, the Company shall
     have delivered to the Trustee an Opinion of Counsel to the effect that the
     Holders of the Outstanding Securities will not recognize income, gain or
     loss for Federal income tax purposes as a result of such deposit and
     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.

         (8) The Company shall have delivered to the Trustee an Opinion of
     Counsel to the effect that such deposit and defeasance or covenant
     defeasance shall not result in the trust arising from such deposit
     constituting an investment company as defined in the Investment Company Act
     of 1940, as amended, or such trust shall be qualified under such act or
     exempt from regulation thereunder.

SECTION 1205. 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 C collectively, for purposes of
this Section 1205, the "Trustee") pursuant to Section 1204 in respect of the
Securities shall be held in trust and applied by the Trustee, in accordance with
the provisions of such Securities 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 Securities,
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.

                                     -122-
<PAGE>

         The Company shall pay and indemnify the Trustee against any tax, fee or
other charge imposed on or assessed against the U.S. Government Obligations
deposited pursuant to Section 1204 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 of the Out standing Securities.

         Anything in this Article Twelve 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 1204 which, in the opinion of a nationally recognized accounting firm
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.

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

         This instrument may be executed 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 instrument.

                                     -123-
<PAGE>

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


                                        BROOKS FIBER PROPERTIES, INC.

                                        By   /s/ David Solomon
                                             -----------------------------------
                                             Name: David L. Solomon
                                             Title: Executive Vice President

                                        THE BANK OF NEW YORK

                                        By   /s/ Timothy J. Shea
                                             -----------------------------------
                                             Name: Timothy J. Shea
                                             Title: Assistant Treasurer

                                     -124-
<PAGE>

STATE OF NEW YORK  )   ss.:
COUNTY OF NEW YORK )

         On the _____ day of , 1997, before me personally came _______________,
to me known, who, being by me duly sworn, did depose and say that he is the
_______________________ of Brooks Fiber Properties, Inc., one of the
corporations described in and which executed the foregoing instrument; that he
knows the seal of said corporation; that the seal affixed to said instrument is
such corporate seal; that it was so affixed by authority of the Board of
Directors of said corporation, and that he signed his name thereto by like
authority.

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

STATE OF NEW YORK  )   ss.:
COUNTY OF NEW YORK )


         On the _____ day of , 1997, before me personally came _______________,
to me known, who, being by me duly sworn, did depose and say that he is a
______________________ of The Bank of New York one of the corporations described
in and which executed the foregoing instrument; that he knows the seal of said
corporation; that the seal affixed to said instrument is such corporate seal;
that it was so affixed by authority of the By-Laws of said corporation, and that
he signed his name thereto by like authority.

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

                                     -125-
<PAGE>
                                                           ANNEX A -- Form of
                                                        Regulation S Certificate

                            REGULATION S CERTIFICATE

             (For transfers pursuant to Section 305(b)(i) and (iii)
                                of the Indenture)

The Bank of New York,
  as Trustee
101 Barclay Street, Floor 21 West
New York, New York  10286
Attention:  Corporate Trust Trustee Administration

         Re: 10% Senior Notes due June 1, 2007 of
             Brooks Fiber Properties, Inc. (the "Securities")

         Reference is made to the Indenture, dated as of May 29, 1997 (the
"Indenture"), between Brooks Fiber Properties, Inc. (the "Company") and The Bank
of New York, as Trustee. Terms used herein and defined in the Indenture or in
Regulation S or Rule 144 under the U.S. Securities Act of 1933, as amended (the
"Securities Act") are used herein as so defined.

         This certificate relates to U.S. $____________ principal amount of
Securities, which are evidenced by the following certificate(s) (the "Specified
Securities"):

                    CUSIP No(s). ___________________________

                    CERTIFICATE No(s). _____________________

The person in whose name this certificate is executed below (the "Undersigned")
hereby certifies that either (i) it is the sole beneficial owner of the
Specified Securities or (ii) it is acting on behalf of all the beneficial owners
of the Specified Securities and is duly authorized by them to do so. Such
beneficial owner or owners are referred to herein collectively as the "Owner".
If the Specified Securities are represented by a Global Security, they are held
through the Depositary or an Agent Member in the name

                                      A-1
<PAGE>

of the Undersigned, as or on behalf of the Owner. If the Specified Securities
are not represented by a Global Security, they are registered in the name of the
Undersigned, as or on behalf of the Owner.

                  The Owner has requested that the Specified Securities be
transferred to a person (the "Transferee") who will take delivery in the form of
a Regulation S Security. In connection with such transfer, the Owner hereby
certifies that, unless such transfer is being effected pursuant to an effective
registration statement under the Securities Act, it is being effected in
accordance with Rule 904 or Rule 144 under the Securities Act and with all
applicable securities laws of the states of the United States and other
jurisdictions. Accordingly, the Owner hereby further certifies as follows:

                  (1)  Rule 904 Transfers.  If the transfer is being
         effected in accordance with Rule 904:

                           (A) the Owner is not a distributor of the Securities,
                  an affiliate of the Company or any such distributor or a
                  person acting on behalf of any of the foregoing;

                           (B) the offer of the Specified Securities
                  was not made to a person in the United States;

                           (C) either:

                                            (i) at the time the buy order was
                           originated, the Transferee was outside the United
                           States or the Owner and any person acting on its
                           behalf reasonably believed that the Transferee was
                           outside the United States, or

                                            (ii) the transaction is being
                           executed in, on or through the facilities of the
                           Eurobond market, as regulated by the Association of
                           International Bond Dealers, or another designated
                           offshore securities market and neither the Owner nor
                           any person acting on its behalf knows that the
                           transaction has been prearranged with a buyer in the
                           United States;

                                      A-2
<PAGE>

                           (D) no directed selling efforts have been made in
                  the United States by or on behalf of the Owner or any 
                  affiliate thereof;

                           (E) if the Owner is a dealer in securities or has
                  received a selling concession, fee or other remuneration in
                  respect of the Specified Securities, and the transfer is to
                  occur during the Restricted Period, then the requirements of
                  Rule 904(c)(1) have been satisfied; and

                           (F) the transaction is not part of a plan or
                  scheme to evade the registration requirements of
                  the Securities Act.

                  (2) Rule 144 Transfers.  If the transfer is being effected 
        pursuant to Rule 144:

                           (A) the transfer is occurring after a holding period
                  of at least one year (computed in accordance with paragraph
                  (d) of Rule 144) has elapsed since the Specified Securities
                  were last acquired from the Company or from an affiliate of
                  the Company, whichever is later, and is being effected in
                  accordance with the applicable amount, manner of sale and
                  notice requirements of Rule 144; or

                           (B) the transfer is occurring after a holding period
                  of at least two years has elapsed since the Specified
                  Securities were last acquired from the Company or from an
                  affiliate of the Company, whichever is later, and the Owner is
                  not, and during the preceding three months has not been, an
                  affiliate of the Company.

                  This certificate and the statements contained herein are made
for your benefit and the benefit of the Company and the Purchasers.


Dated:                                  ----------------------------------------
                                        (Print the name of the Undersigned, as 
                                        such term is defined in the second 
                                        paragraph of this certificate.)

                                      A-3
<PAGE>

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

                                        (If the Undersigned is a corporation,
                                        partnership or fiduciary, the title of
                                        the person signing on behalf of the
                                        Undersigned must be stated.)

                                      A-4
<PAGE>
                                                   ANNEX B -- Form of Restricted
                                                      Securities Certificate

                        RESTRICTED SECURITIES CERTIFICATE

             (For transfers pursuant to Section 305(b)(ii) and (iii)
                                of the Indenture)

The Bank of New York,
  as Trustee
101 Barclay Street, Floor 21 West
New York, New York  10286
Attention:  Corporate Trust Trustee Administration

         Re: 10% Senior Notes due June 1, 2007 of
             Brooks Fiber Properties, Inc. (the "Securities")

         Reference is made to the Indenture, dated as of May 29, 1997 (the
"Indenture"), between Brooks Fiber Properties, Inc. (the "Company") and The Bank
of New York, as Trustee. Terms used herein and defined in the Indenture or in
Regulation S or Rule 144 under the U.S. Securities Act of 1933, as amended (the
"Securities Act") are used herein as so defined.

         This certificate relates to U.S. $_____________ principal amount of
Securities, which are evidenced by the following certificate(s) (the "Specified
Securities"):

                  CUSIP No(s). ___________________________

                  CERTIFICATE No(s). _____________________

The person in whose name this certificate is executed below (the "Undersigned")
hereby certifies that either (i) it is the sole beneficial owner of the
Specified Securities or (ii) it is acting on behalf of all the beneficial owners
of the Specified Securities and is duly authorized by them to do so. Such
beneficial owner or owners are referred to herein collectively as the "Owner".
If the Specified Securities are represented by a Global Security, they are held
through the Depositary or an Agent Member in the name of the Undersigned, as or
on behalf of the Owner. If the Specified Securities are not represented by a
Global

                                      B-1
<PAGE>

Security, they are registered in the name of the Undersigned, as or on behalf of
the Owner.

         The Owner has requested that the Specified Securities be transferred to
a person (the "Transferee") who will take delivery in the form of a Restricted
Security. In connection with such transfer, the Owner hereby certifies that,
unless such transfer is being effected pursuant to an effective registration
statement under the Securities Act, it is being effected in accordance with Rule
144A or Rule 144 under the Securities Act and all applicable securities laws of
the states of the United States and other jurisdictions. Accordingly, the Owner
hereby further certifies as follows:

                  (1) Rule 144A Transfers. If the transfer is being effected in
         accordance with Rule 144A:

                           (A) the Specified Securities are being transferred to
                  a person that the Owner and any person acting on its behalf
                  reasonably believe is a "qualified institutional buyer" within
                  the meaning of Rule 144A, acquiring for its own account or for
                  the account of a qualified institutional buyer; and

                           (B) the Owner and any person acting on its behalf
                  have taken reasonable steps to ensure that the Transferee is
                  aware that the Owner may be relying on Rule 144A in connection
                  with the transfer; and

                  (2) Rule 144 Transfers. If the transfer is being effected
         pursuant to Rule 144:

                           (A) the transfer is occurring after a holding period
                  of at least one year (computed in accordance with paragraph
                  (d) of Rule 144) has elapsed since the Specified Securities
                  were last acquired from the Company or from an affiliate of
                  the Company, whichever is later, and is being effected in
                  accordance with the applicable amount, manner of sale and
                  notice requirements of Rule 144; or

                           (B) the transfer is occurring after a holding period
                  of at least two years has elapsed since the Specified
                  Securities were last acquired from the Company or from an
                  affiliate of the Company, whichever is later, and the Owner is
                  not,

                                      B-2
<PAGE>

                  and during the preceding three months has not
                  been, an affiliate of the Company.

                  This certificate and the statements contained herein are made
for your benefit and the benefit of the Company and the Purchasers.


Dated:                                  ----------------------------------------
                                        (Print the name of the Undersigned, as
                                        such term is defined in the second
                                        paragraph of this certificate.)

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

                                        (If the Undersigned is a corporation,
                                        partnership or fiduciary, the title of
                                        the person signing on behalf of the
                                        Undersigned must be stated.)

                                      B-3
<PAGE>
                                                 ANNEX C -- Form of Unrestricted
                                                     Securities Certificate

                       UNRESTRICTED SECURITIES CERTIFICATE

          (For removal of Securities Act Legends pursuant to ' 305(c))

The Bank of New York,
  as Trustee
101 Barclay Street, Floor 21 West
New York, New York  10286
Attention:  Corporate Trust Trustee Administration

         Re: 10% Senior Notes due June 1, 2007 of
             Brooks Fiber Properties, Inc. (the "Securities")

         Reference is made to the Indenture, dated as of May 29, 1997 (the
"Indenture"), between Brooks Fiber Properties, Inc. (the "Company") and The Bank
of New York, as Trustee. Terms used herein and defined in the Indenture or in
Regulation S or Rule 144 under the U.S. Securities Act of 1933, as amended (the
"Securities Act") are used herein as so defined.

         This certificate relates to U.S. $_____________ principal amount of
Securities, which are evidenced by the following certificate(s) (the "Specified
Securities"):

                  CUSIP No(s). ___________________________

                  CERTIFICATE No(s). _____________________

The person in whose name this certificate is executed below (the "Undersigned")
hereby certifies that either (i) it is the sole beneficial owner of the
Specified Securities or (ii) it is acting on behalf of all the beneficial owners
of the Specified Securities and is duly authorized by them to do so. Such
beneficial owner or owners are referred to herein collectively as the "Owner".
If the Specified Securities are represented by a Global Security, they are held
through the Depositary or an Agent Member in the name of the Undersigned, as or
on behalf of the Owner. If the Specified Securities are not represented by a
Global Security, they are registered in the name of the Undersigned, as or on
behalf of the Owner.

                                      C-1
<PAGE>

         The Owner has requested that the Specified Securities be exchanged for
Securities bearing no Securities Act Legend pursuant to Section 305(c) of the
Indenture. In connection with such exchange, the Owner hereby certifies that the
exchange is occurring after a holding period of at least two years (computed in
accordance with paragraph (d) of Rule 144) has elapsed since the Specified
Securities were last acquired from the Company or from an affiliate of the
Company, whichever is later, and the Owner is not, and during the preceding
three months has not been, an affiliate of the Company. The Owner also
acknowledges that any future transfers of the Specified Securities must comply
with all applicable securities laws of the states of the United States and other
jurisdictions.

         This certificate and the statements contained herein are made for your
benefit and the benefit of the Company and the Purchasers.


Dated:                                  ----------------------------------------
                                        (Print the name of the Undersigned, as
                                        such term is defined in the second
                                        paragraph of this certificate.)

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

                                        (If the Undersigned is a corporation,
                                        partnership or fiduciary, the title of
                                        the person signing on behalf of the
                                        Undersigned must be stated.)

                                      C-2

                   EXCHANGE AND REGISTRATION RIGHTS AGREEMENT

     EXCHANGE AND REGISTRATION RIGHTS AGREEMENT, dated as of May 29, 1997 by and
between Brooks Fiber Properties, Inc., a Delaware corporation (the "Company"),
and Goldman, Sachs & Co., Salomon Brothers Inc, Merrill Lynch, Pierce, Fenner &
Smith Incorporated (collectively, the "Purchasers") of the 10% Senior Notes due
June 1, 2007 of the
Company.

     1. Certain Definitions.

     For purposes of this Exchange and Registration Rights Agreement, the
following terms shall have the following respective meanings:

         (a) "Closing Date" shall mean the date on which the Securities are
     initially issued.

         (b) "Commission" shall mean the Securities and Exchange Commission, or
     any other federal agency at the time administering the Exchange Act or the
     Securities Act, whichever is the relevant statute for the particular
     purpose.

         (c) "Effective Time", in the case of (i) an Exchange Offer, shall mean
     the date on which the Commission declares the Exchange Offer registration
     statement effective or on which such registration statement otherwise
     becomes effective and (ii) a Shelf Registration, shall mean the date on
     which the Commission declares the Shelf Registration effective or on which
     the Shelf Registration otherwise becomes effective.

         (d) "Exchange Act" shall mean the Securities Exchange Act of 1934, or
     any successor thereto, as the same shall be amended from time to time.

         (e) "Exchange Offer" shall have the meaning assigned thereto in
     Section 2(a).

         (f) "Exchange Securities" shall have the meaning assigned thereto in
     Section 2(a).

         (g) The term "holder" shall mean each of the Purchasers for so long as
     it owns any Registrable Securities, and such of its respective successors
     and assigns who acquire Registrable Securities, directly or indirectly,
     from such person or from any successor or assign of such person, in each
     case for so long as such person owns any Registrable Securities.

         (h) "Indenture" shall mean the Indenture, dated as of May 29, 1997,
     between the Company and The Bank of New York, as Trustee.

         (i) The term "person" shall mean a corporation, association,
     partnership, organization, business, individual, government or political
     subdivision thereof or governmental agency.

         (j) "Purchase Agreement" shall mean the Purchase Agreement dated May
     23, 1997, between the Company and the Purchasers.
<PAGE>

         (k) "Registrable Securities" shall mean the Securities; provided,
     however, that such Securities shall cease to be Registrable Securities when
     (i) except if prior to the consummation of the Exchange Offer existing
     Commission interpretations are changed such that the Exchange Securities
     received by holders in the Exchange Offer for Registrable Securities are
     not or would not be, upon receipt, transferable by each such holder (other
     than a Restricted Holder) without restriction under the Securities Act in
     the circumstances contemplated by Section 2(a), the Exchange Offer is
     conducted as contemplated in Section 2(a); provided, however, that any such
     Securities that, pursuant to the last two sentences of Section 2(a), are
     included in a prospectus for use in connection with resales by
     broker-dealers shall be deemed to be Registrable Securities with respect to
     Sections 5, 6 and 9 until resale of such Exchange Securities has been
     effected within the 90-day period referred to in Section 2(a); (ii) in the
     circumstances contemplated by Section 2(b), a registration statement
     registering such Securities under the Securities Act has been declared or
     becomes effective and such Securities have been sold or otherwise
     transferred by the holder thereof pursuant to such effective registration
     statement; (iii) such Securities are sold pursuant to Rule 144 (or any
     successor provision) promulgated under the Securities Act under
     circumstances in which any legend borne by such Securities relating to
     restrictions on transferability thereof, under the Securities Act or
     otherwise, is removed by the Company or pursuant to the Indenture or such
     Securities are eligible to be sold pursuant to paragraph (k) of Rule 144;
     or (iv) such Securities shall cease to be outstanding.

         (l) "Registration Default" shall have the meaning assigned thereto in
     Section 2(c) hereof.

         (m) "Registration Expenses" shall have the meaning assigned thereto in
     Section 4 hereof.

         (n) "Restricted Holder" shall mean (i) a holder that is an affiliate of
     the Company within the meaning of Rule 405 under the Securities Act, (ii) a
     holder who acquires Exchange Securities outside the ordinary course of such
     holder's business or (iii) a holder who has arrangements or understandings
     with any person to participate in the Exchange Offer for the purpose of
     distributing Exchange Securities.

         (o) "Securities" shall mean, collectively, the 10% Senior Notes due
     June 1, 2007, of the Company to be issued and sold to the Purchasers, and
     securities issued in exchange therefor or in lieu thereof pursuant to the
     Indenture.

         (p) "Securities Act" shall mean the Securities Act of 1933, or any
     successor thereto, as the same shall be amended from time to time.

         (q) "Shelf Registration" shall have the meaning assigned thereto in
     Section 2(b) hereof.

         (r) "Special Interest" shall have the meaning assigned thereto in
     Section 2(c) hereof.

         (s) "Trust Indenture Act" shall mean the Trust Indenture Act of 1939,
     or any successor thereto, and the rules, regulations and forms promulgated
     thereunder, all as the same shall be amended from time to time.

     2. Registration Under the Securities Act.

                                      -2-
<PAGE>

     (a) Except as set forth in Section 2(b) below, the Company agrees to use
its best efforts to file under the Securities Act no later than 60 days after
the Closing Date, a registration statement relating to an offer to exchange (the
"Exchange Offer") for a like aggregate principal amount of debt securities of
the Company which are substantially identical to the Securities (and which are
entitled to the benefits of a trust indenture which is substantially identical
to the Indenture or is the Indenture and which has been qualified under the
Trust Indenture Act) except that they have been registered pursuant to an
effective registration statement under the Securities Act (such new debt
securities hereinafter called "Exchange Securities") for any or all of the
Registrable Securities. The Company agrees to use its reasonable best efforts to
cause such registration statement to become effective under the Securities Act
no later than 90 days after the Closing Date. The Exchange Offer will be
registered under the Act on the appropriate form and will comply with all
applicable tender offer rules and regulations under the Exchange Act. The
Company further agrees to commence and complete the Exchange Offer promptly
after such registration statement has become effective, hold the Exchange Offer
open for at least 30 days and exchange Exchange Securities for all Registrable
Securities that have been tendered and not withdrawn on or prior to the
expiration of the Exchange Offer. The Exchange Offer will be deemed to have been
completed only if the Exchange Securities received by holders other than
Restricted Holders in the Exchange Offer for Registrable Securities are, upon
receipt, transferable by each such holder without restriction under the
Securities Act and the Exchange Act and without material restrictions under the
blue sky or securities laws of a substantial majority of the States of the
United States of America. The Exchange Offer shall be deemed to have been
completed upon the earlier to occur of (i) the Company having exchanged the
Exchange Securities for all outstanding Registrable Securities pursuant to the
Exchange Offer and (ii) the Company having exchanged, pursuant to the Exchange
Offer, Exchange Securities for all Registrable Securities that have been
tendered and not withdrawn before the expiration of the Exchange Offer, which
shall be on a date that is at least 30 days following the commencement of the
Exchange Offer. The Company agrees (i) to include in the registration statement
a prospectus for use in connection with any resales by any holder of Exchange
Securities that is a broker-dealer and (ii) to keep such registration statement
effective for a period ending on the earlier of the 90th day after the Exchange
Offer has been completed or such time as such broker-dealers no longer own any
Registrable Securities. With respect to such registration statement, the Company
and any such holder shall have the benefit of, and shall each provide to the
other, the rights of indemnification and contribution set forth in Section 6
hereof.

     (b) If prior to the consummation of the Exchange Offer existing Commission
interpretations are changed such that the Exchange Securities received by
holders other than Restricted Holders in the Exchange Offer for Registrable
Securities are not or would not be, upon receipt, transferable by each such
holder without restriction under the Securities Act, in lieu of conducting the
Exchange Offer contemplated by Section 2(a) the Company shall file under the
Securities Act a "shelf" registration statement providing for the registration
of, and the sale on a continuous or delayed basis by the holders of, all of the
Registrable Securities, pursuant to Rule 415 under the Securities Act and/or any
similar rule that may be adopted by the Commission (the "Shelf Registration").
The Company agrees to use its reasonable best efforts to cause the Shelf
Registration to become or be declared effective no later than 90 days after the
Closing Date and to keep such Shelf Registration continuously effective for a
period

                                       -3-
<PAGE>

ending on the earlier of the third anniversary of the Closing Date or such time
as there are no longer any Registrable Securities outstanding. The Company
further agrees to supplement or make amendments to the Shelf Registration, as
and when required by the rules, regulations or instructions applicable to the
registration form used by the Company for such Shelf Registration or by the
Securities Act or rules and regulations thereunder for shelf registration, and
the Company agrees to furnish to the holders of the Registrable Securities
copies of any such supplement or amendment prior to its being used and/or filed
with the Commission.

     (c) In the event that (i) the Company has not filed the registration
statement relating to the Exchange Offer (or, if applicable, the Shelf
Registration) on or before the 60th day after the Closing Date, or (ii) such
registration statement or, in lieu thereof, the Shelf Registration, has not
become effective or been declared effective by the Commission on or before the
90th day after the Closing Date, or (iii) the Exchange Offer has not been
completed within 45 days after the initial effective date of the registration
statement (if the Exchange Offer is then required to be made) or (iv) any
registration statement required by Section 2(a) or 2(b) is filed and declared
effective but shall thereafter cease to be effective (except as specifically
permitted herein) without being succeeded promptly by an additional registration
statement filed and declared effective (each such event referred to in clauses
(i) through (iv), a "Registration Default"), then interest will accrue (in
addition to any stated interest on the Securities) at the rate of 0.5% per annum
on the principal amount of the Securities, determined daily for the period from
the occurrence of the Registration Default until such time as no Registration
Default is in effect (after which time no such special interest will accrue).
Such special interest (the "Special Interest") will be payable in cash
semi-annually in arrears on each June 1, and December 1, in accordance with the
Indenture. In addition, in the event that the Exchange Offer has not been
completed or, if applicable, the Shelf Registration has not become effective or
been declared effective by the Commission on or before the 135th day after the
Closing Date, then the per annum rate of Special Interest shall increase by an
additional 0.5%, and Special Interest will be paid at such increased rate until
such time as the Company completes the Exchange Offer or, if applicable, the
Shelf Registration has become or been declared effective.

     (d) In the event that either of the Purchasers shall not have sold all of
the Securities initially purchased by it pursuant to the Purchase Agreement
within 60 days after the Closing Date and such Purchaser requests on the
business day following the expiration of such 60-day period that the Company
register a resale of such unsold Securities, the Company shall file under the
Securities Act as soon as practicable after receipt of such request a
registration statement on the appropriate form covering a resale of such unsold
Securities (the "Resale Registration") and will use its reasonable best efforts
to cause such registration statement to become effective under the Securities
Act as promptly as practicable and to keep such registration statement
continuously effective pursuant to Rule 415 under the Securities Act and/or any
similar rule that may be adopted by the Commission for a period of up to 30
days.

     3. Registration Procedures.

     If the Company files a registration statement pursuant to Section 2(a) or
Section 2(b), the following provisions shall apply:

                                       -4-
<PAGE>

     (a) At or before the Effective Time of the Exchange Offer or the Shelf
Registration, as the case may be, the Company shall qualify the Indenture under
the Trust Indenture Act of 1939.

     (b) In the event that such qualification would require the appointment of a
new trustee under the Indenture, the Company shall appoint a new trustee
thereunder pursuant to the applicable provisions of the Indenture.

     (c) In connection with the Company's obligations with respect to the Shelf
Registration or any Resale Registration, if applicable, the Company shall use
its reasonable best efforts to effect or cause the Shelf Registration or Resale
Registration to permit the sale of the Registrable Securities by the holders
thereof in accordance with the intended method or methods of distribution
thereof described in the Shelf Registration. In connection therewith, the
Company shall:

         (i) prepare and file with the Commission a registration statement with
     respect to the Shelf Registration or Resale Registration on any form which
     may be utilized by the Company and which shall permit the disposition of
     the Registrable Securities in accordance with the intended method or
     methods thereof, as specified in writing to the Company by the holders of
     the Registrable Securities;

         (ii) as soon as reasonably possible, prepare and file with the
     Commission such amendments and supplements to such registration statement
     and the prospectus included therein as may be necessary to effect and
     maintain the effectiveness of such registration statement for the period
     specified in Section 2(b) or Section 2(d) hereof, as applicable, and as may
     be required by the applicable rules and regulations of the Commission and
     the instructions applicable to the form of such registration statement;

         (iii) as soon as reasonably possible, comply with the provisions of the
     Securities Act applicable to the Company in connection with the disposition
     of all of the Registrable Securities covered by such registration statement
     in accordance with the intended methods of disposition by the holders
     thereof, set forth in such registration statement;

         (iv) provide (A) the holders of the Registrable Securities to be
     included in such registration statement and not more than one counsel for
     all the holders of such Registrable Securities, (B) the underwriters (which
     term, for purposes of this Exchange and Registration Rights Agreement,
     shall include a person deemed to be an underwriter within the meaning of
     Section 2(11) of the Securities Act), if any, thereof, (C) the sales or
     placement agent, if any, therefor, and (D) one counsel for such
     underwriters or agents, if any, reasonable opportunity to participate in
     the preparation of such registration statement, each prospectus included
     therein or filed with the Commission, and each amendment or supplement
     thereto;

         (v) for a reasonable period prior to the filing of such registration
     statement, and throughout the period specified in Section 2(b) or Section
     2(d), as applicable, make available at reasonable times at the Company's
     principal place of business or such other reasonable place for inspection
     by the persons referred to in Section 3(c)(iv) who shall

                                       -5-
<PAGE>

     certify to the Company that they have a current intention to sell the
     Registrable Securities pursuant to the Shelf Registration or Resale
     Registration such financial and other information and books and records of
     the Company, and cause the officers, employees, counsel and independent
     certified public accountants of the Company to respond to such inquiries,
     as shall be reasonably necessary, in the judgment of the respective counsel
     referred to in such Section, to conduct a reasonable investigation within
     the meaning of Section 11 of the Securities Act; provided, however, that
     each such party shall be required to maintain in confidence and not to
     disclose to any other person any information or records reasonably
     designated by the Company as being confidential, until such time as (A)
     such information becomes a matter of public record (whether by virtue of
     its inclusion in such registration statement or otherwise, except by
     disclosure by such party in breach of this Agreement), or (B) such person
     shall be required so to disclose such information pursuant to the subpoena
     or order of any court or other governmental agency or body having
     jurisdiction over the matter (subject to, and only to the extent required
     by, the requirements of such order, and only after such person shall have
     given the Company prompt prior written notice of such requirement), or (C)
     such information is required to be set forth in such registration statement
     or the prospectus included therein or in an amendment to such registration
     statement or an amendment or supplement to such prospectus in order that
     such registration statement, prospectus, amendment or supplement, as the
     case may be, does not contain an untrue statement of a material fact or
     omit to state therein a material fact required to be stated therein or
     necessary to make the statements therein not misleading in light of the
     circumstances then existing;

         (vi) promptly notify the selling holders of Registrable Securities, the
     sales or placement agent, if any, therefor and the managing underwriter or
     underwriters, if any, thereof and confirm such advice in writing, (A) when
     such registration statement or the prospectus included therein or any
     prospectus amendment or supplement or post-effective amendment has been
     filed, and, with respect to such registration statement or any
     post-effective amendment, when the same has become effective, (B) of any
     comments by the Commission and by the Blue Sky or securities commissioner
     or regulator of any state with respect thereto or any request by the
     Commission for amendments or supplements to such registration statement or
     prospectus or for additional information, (C) of the issuance by the
     Commission of any stop order suspending the effectiveness of such
     registration statement or the initiation or threatening of any proceedings
     for that purpose, (D) if at any time the representations and warranties of
     the Company contemplated by Section 3(c)(xv) or Section 5 cease to be true
     and correct in all material respects, (E) of the receipt by the Company of
     any notification with respect to the suspension of the qualification of the
     Registrable Securities for sale in any jurisdiction or the initiation or
     threatening of any proceeding for such purpose, or (F) at any time when a
     prospectus is required to be delivered under the Securities Act, that such
     registration statement, prospectus, prospectus amendment or supplement or
     post-effective amendment, or any document incorporated by reference in any
     of the foregoing, contains an untrue statement of a material fact or omits
     to state any material fact required to be stated therein or necessary to
     make the statements therein not misleading in light of the circumstances
     then existing;

          (vii) use its reasonable best efforts to obtain the withdrawal of any
     order suspending

                                       -6-
<PAGE>

     the effectiveness of such registration statement or any post-effective 
     amendment thereto at the earliest practicable date;

         (viii) if requested in writing by any managing underwriter or
     underwriters, any placement or sales agent or counsel for the holders of
     Registrable Securities, promptly incorporate in a prospectus supplement or
     post-effective amendment such information as is required by the applicable
     rules and regulations of the Commission and as such managing underwriter or
     underwriters, such agent or such holder specifies should be included
     therein relating to the terms of the sale of such Registrable Securities,
     including, without limitation, information with respect to the principal
     amount of Registrable Securities being sold by any holder or agent or to
     any underwriters, the name and description of such holder, agent or
     underwriter, the offering price of such Registrable Securities and any
     discount, commission or other compensation payable in respect thereof, the
     purchase price being paid therefor by such underwriters and with respect to
     any other terms of the offering of the Registrable Securities, to be sold
     by such holder or agent or to such underwriters; and make all required
     filings of such prospectus supplement or post-effective amendment promptly
     after notification of the matters to be incorporated in such prospectus
     supplement or post-effective amendment;

         (ix) furnish to each holder of Registrable Securities, each placement
     or sales agent, if any, therefor, each underwriter, if any, thereof and the
     respective counsel referred to in Section 3(c)(iv) an executed copy of such
     registration statement, each such amendment and supplement thereto (in each
     case including all exhibits thereto and documents incorporated by reference
     therein) and such number of copies of such registration statement
     (excluding exhibits thereto and documents incorporated by reference therein
     unless specifically so requested by such holder, agent or underwriter, as
     the case may be) and of the prospectus included in such registration
     statement (including each preliminary prospectus and any summary
     prospectus), in conformity with the requirements of the Securities Act, and
     such other documents, as such holder, agent, if any, and underwriter, if
     any, may reasonably request in order to facilitate the offering and
     disposition of the Registrable Securities owned by such holder, offered or
     sold by such agent or underwritten by such underwriter and to permit such
     holder, agent and underwriter to satisfy the prospectus delivery
     requirements of the Securities Act; and the Company hereby consents to the
     use of such prospectus (including such preliminary and summary prospectus)
     and any amendment or supplement thereto by each such holder and by any such
     agent and underwriter, in each case in the form most recently provided to
     such party by the Company, in connection with the offering and sale of the
     Registrable Securities covered by the prospectus (including such
     preliminary and summary prospectus) or any supplement or amendment thereto;

         (x) use its reasonable best efforts to (A) register or qualify the
     Registrable Securities to be included in such registration statement under
     such securities laws or blue sky laws of such jurisdictions as any holder
     of such Registrable Securities and each placement or sales agent, if any,
     therefor and underwriter, if any, thereof shall reasonably request, (B)
     keep such registrations or qualifications in effect and comply with such
     laws so as to permit the continuance of offers, sales and dealings therein
     in such jurisdictions during the period the Shelf Registration or Resale
     Registration is required to remain effective under Section 2(b)

                                       -7-
<PAGE>

     or Section 2(d) above, as applicable, and for so long as may be necessary
     to enable any such holder, agent or underwriter to complete its
     distribution of Securities pursuant to such registration statement and (C)
     take any and all other actions as may be reasonably necessary or advisable
     to enable each such holder, agent, if any, and underwriter, if any, to
     consummate the disposition in such jurisdictions of Registrable Securities;
     provided, however, that the Company shall not be required for any such
     purpose to (1) qualify as a foreign corporation in any jurisdiction wherein
     it would not otherwise be required to qualify but for the requirements of
     this Section 3(c)(x), (2) consent to general service of process in any such
     jurisdiction, (3) subject itself to taxation in any jurisdiction where the
     Company is not already subject to taxation or (4) make any changes to the
     Company's certificate of incorporation or by-laws or any agreement between
     the Company and its stockholders;

          (xi) use its reasonable best efforts to obtain the consent or approval
     of each governmental agency or authority, whether federal, state or local,
     which may be required to effect the Shelf Registration or Resale
     Registration or the offering or sale in connection therewith or to enable
     the selling holder or holders to offer, or to consummate the disposition
     of, their Registrable Securities;

         (xii) cooperate with the holders of the Registrable Securities and the
     managing underwriters, if any, to facilitate the timely preparation and
     delivery of certificates representing Registrable Securities to be sold,
     which certificates shall be printed, lithographed or engraved, or produced
     by any combination of such methods, and which shall not bear any
     restrictive legends; and, in the case of an underwritten offering, enable
     such Registrable Securities to be in such denominations and registered in
     such names as the managing underwriters may request at least two business
     days prior to any sale of the Registrable Securities;

         (xiii) provide a CUSIP number for all Registrable Securities, not later
     than the effective date of the Shelf Registration or Resale Registration;

         (xiv) enter into one or more underwriting agreements, engagement
     letters, agency agreements or similar agreements, as appropriate, including
     (without limitation) provisions relating to indemnification and
     contribution substantially the same as those set forth in Section 6 hereof,
     and take such other actions in connection therewith as any holders of
     Registrable Securities aggregating at least 25% in aggregate principal
     amount of the Registrable Securities included in such Shelf Registration or
     Resale Registration shall request in order to expedite or facilitate the
     disposition of such Registrable Securities; provided, that the Company
     shall not be required to enter into any such agreement more than once with
     respect to all of the Registrable Securities and may delay entering into
     such agreement until the consummation of any underwritten public offering
     which the Company shall have then undertaken;

          (xv) whether or not an agreement of the type referred to in Section
     (3)(c)(xiv) hereof is entered into and whether or not any portion of the
     offering contemplated by such registration statement is an underwritten
     offering or is made through a placement or sales

                                       -8-
<PAGE>

     agent or any other entity, (A) make such representations and warranties to
     the holders of such Registrable Securities and the placement or sales
     agent, if any, therefor and the underwriters, if any, thereof substantially
     the same as those set forth in Section 1 of the Purchase Agreement and such
     other representations and warranties as are customarily made with respect
     to the offering of debt securities pursuant to a shelf registration
     statement on the applicable form under the Act; (B) obtain an opinion or
     opinions of counsel to the Company substantially the same as the opinions
     provided for in Section 7 of the Purchase Agreement, addressed to such
     holder or holders and the placement or sales agent, if any, therefor and
     the underwriters, if any, thereof and dated the effective date of such
     registration statement (and if such registration statement contemplates an
     underwritten offering of a part or all of the Registrable Securities, dated
     the date of the closing under the underwriting agreement relating thereto)
     (it being agreed that the matters to be covered by such opinion shall also
     include, without limitation, the absence of governmental approvals required
     to be obtained in connection with the Shelf Registration or Resale
     Registration, the offering and sale of the Registrable Securities, this
     Exchange and Registration Rights Agreement or any agreement of the type
     referred to in Section (3)(c)(xiv) hereof, except such approvals as may be
     required under state securities or blue sky laws; and the compliance as to
     form of such registration statement and any documents incorporated by
     reference therein and of the Indenture with the requirements of the
     Securities Act and the Trust Indenture Act, respectively; and, such opinion
     shall also state that such counsel has no reason to believe that, as of the
     date of the opinion and of the registration statement or most recent
     post-effective amendment thereto, as the case may be, such registration
     statement and the prospectus included therein, as then amended or
     supplemented, and the documents incorporated by reference therein (in each
     case other than the financial statements and other financial information
     contained therein) contains or contained an untrue statement of a material
     fact or omits or omitted to state therein a material fact necessary to make
     the statements therein not misleading (in the case of such documents, in
     the light of the circumstances existing at the time that such documents
     were filed with the Commission under the Exchange Act)); (C) obtain a "cold
     comfort" letter or letters from the independent certified public
     accountants of the Company addressed to the selling holders of Registrable
     Securities, the placement or sales agent, if any, therefor and the
     underwriters, if any, thereof, dated (i) the effective date of such
     registration statement and (ii) the effective date of any prospectus
     supplement to the prospectus included in such registration statement or
     post-effective amendment to such registration statement which includes
     unaudited or audited financial statements as of a date or for a period
     subsequent to that of the latest such statements included in such
     prospectus (and, if such registration statement contemplates an
     underwritten offering pursuant to any prospectus supplement to the
     prospectus included in such registration statement or post-effective
     amendment to such registration statement which includes unaudited or
     audited financial statements as of a date or for a period subsequent to
     that of the latest such statements included in such prospectus, dated the
     date of the closing under the underwriting agreement relating thereto),
     such letter or letters to be in customary form and covering such matters of
     the type customarily covered by letters of such type; (D) deliver such
     other documents and certificates, including officers' certificates, as may
     be reasonably requested by any holders of at least 25% in aggregate
     principal amount of the Registrable Securities included in such Shelf
     Registration or Resale Registration or the placement or sales agent, if
     any, therefor and the managing

                                      -9-
<PAGE>

     underwriters, if any, thereof to evidence the accuracy of the
     representations and warranties made pursuant to clause (A) above or those
     contained in Section 5(a) hereof and the compliance with or satisfaction of
     any agreements or conditions contained in the underwriting agreement or
     other agreement entered into by the Company; and (E) undertake such
     obligations relating to expense reimbursement, indemnification and
     contribution as are provided in Section 6 hereof;

         (xvi) notify in writing each holder of Registrable Securities of any
     proposal by the Company to amend or waive any provision of this Exchange
     and Registration Rights Agreement pursuant to Section 9(h) hereof and of
     any amendment or waiver effected pursuant thereto, each of which notices
     shall contain the text of the amendment or waiver proposed or effected, as
     the case may be; and

         (xvii) in the event that any broker-dealer registered under the
     Exchange Act shall underwrite any Registrable Securities or participate as
     a member of an underwriting syndicate or selling group or "participate in
     the distribution" (within the meaning of the Conduct Rules and the By-Laws
     of the National Association of Securities Dealers, Inc. ("NASD") or any
     successor thereto, as amended from time to time) thereof, whether as a
     holder of such Registrable Securities or as an underwriter, a placement or
     sales agent or a broker or dealer in respect thereof, or otherwise, assist
     such broker-dealer in complying with the requirements of such Rules and
     By-Laws, including, without limitation, by (A) if such Rules or By-Laws,
     including Rule 2720 (or any successor thereto), shall so require, engaging
     a "qualified independent underwriter" (as defined in Rule 2720 (or any
     successor thereto)) to participate in the preparation of the registration
     statement relating to such Registrable Securities, to exercise usual
     standards of due diligence in respect thereto and, if any portion of the
     offering contemplated by such registration statement is an underwritten
     offering or is made through a placement or sales agent, to recommend the
     yield of such Registrable Securities, (B) indemnifying any such qualified
     independent underwriter to the extent of the indemnification of
     underwriters provided in Section 6 hereof, and (C) providing such
     information to such broker-dealer as may be required in order for such
     broker-dealer to comply with the requirements of the Conduct Rules of the
     NASD.

     (d) In the event that the Company would be required, pursuant to Section
3(c)(vi)(F) above, to notify the selling holders of Registrable Securities, the
placement or sales agent, if any, therefor and the managing underwriters, if
any, thereof, the Company shall without delay prepare and furnish to each such
holder, to each placement or sales agent, if any, and to each underwriter, if
any, a reasonable number of copies of a prospectus supplemented or amended so
that, as thereafter delivered to purchasers of Registrable Securities, such
prospectus shall not contain an untrue statement of a material fact or omit to
state a material fact required to be stated therein or necessary to make the
statements therein not misleading in light of the circumstances then existing.
Each holder of Registrable Securities agrees that upon receipt of any notice
from the Company pursuant to Section 3(c)(vi)(F) hereof, such holder shall
forthwith discontinue the disposition of Registrable Securities, pursuant to the
registration statement applicable to such Registrable Securities until such
holder shall have received copies of such amended or supplemented prospectus,
and if so directed by the Company, such holder shall deliver to the Company (at
the Company's expense) all copies, other than permanent file

                                      -10-
<PAGE>

copies, then in such holder's possession of the prospectus covering such
Registrable Securities at the time of receipt of such notice.

     (e) The Company may require each holder of Registrable Securities as to
which any registration is being effected to furnish in writing to the Company
such information regarding such holder and such holder's intended method of
distribution of such Registrable Securities as the Company may from time to time
reasonably request in writing, but only to the extent that such information is
required in order to comply with the Securities Act, and may exclude from any
such registration the Registrable Securities of any such holder who fails to
furnish such reasonably requested information within 30 days after such request.
Each such holder agrees to notify the Company as promptly as practicable of any
inaccuracy or change in information previously furnished by such holder to the
Company or of the occurrence of any event in either case as a result of which
any prospectus relating to such registration contains or would contain
an untrue statement of a material fact regarding such holder or such holder's
intended method of distribution of such Registrable Securities or omits to state
any material fact regarding such holder or such holder's intended method of
distribution of such Registrable Securities required to be stated therein or
necessary to make the statements therein not misleading in light of the
circumstances then existing, and promptly to furnish to the Company any
additional information required to correct and update any previously furnished
information or required so that such prospectus shall not contain, with respect
to such holder or the distribution of such Registrable Securities, an untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein not misleading in
light of the circumstances then existing. Each such holder shall comply with the
provisions of the Securities Act applicable to such holder with respect to the
disposition by such holder of Registrable Securities covered by such
registration statement in accordance with the intended methods of disposition by
such holder set forth in such registration statement.

     (f) Until three years after the Closing Date, the Company will not, and
will not permit any of its "affiliates" (as defined in Rule 144 under the Act)
to, resell any of the Securities which constitute "restricted securities" under
Rule 144 that have been reacquired by any of them except pursuant to an
effective registration statement under the Act or any exemption therefrom.

     4. Registration Expenses.

     If the Company files a registration statement pursuant to Section 2(a) or
Section 2(b), the following provisions shall apply:

     The Company agrees to bear and to pay or cause to be paid all expenses
incident to the Company's performance of or compliance with this Exchange and
Registration Rights Agreement, including, without limitation, (a) all Commission
and any NASD registration and filing fees and expenses, (b) any fees and
expenses in connection with the qualification of Registrable Securities for
offering and sale under the State securities and blue sky laws referred to in
Section 3(c)(x) hereof, including reasonable fees and disbursements of counsel
for the placement or sales agent, if any, or underwriters, if any, in connection
with such qualifications, (c) all expenses relating to the preparation,
printing, distribution and reproduction of each

                                      -11-
<PAGE>

registration statement required to be filed hereunder, each prospectus included
therein or prepared for distribution pursuant hereto, each amendment or
supplement to the foregoing, and the certificates representing the Securities,
(d) messenger and delivery expenses, (e) fees and expenses of the Trustee under
the Indenture and of any escrow agent or custodian, (f) internal expenses
(including, without limitation, all salaries and expenses of the Company's
officers and employees performing legal or accounting duties), (g) fees,
disbursements and expenses of counsel and independent certified public
accountants of the Company (including the expenses of any opinions or "cold
comfort" letters required by or incident to such performance and compliance),
(h) fees, disbursements and expenses of any "qualified independent underwriter"
engaged pursuant to Section 3(c)(xvii) hereof, (i) fees, disbursements and
expenses of one counsel for the holders of Registrable Securities retained in
connection with a Shelf Registration, as selected by the holders of at least a
majority in aggregate principal amount of the Registrable Securities being
registered, and fees, expenses and disbursements of any other persons, including
special experts, retained by the Company in connection with such registration
(collectively, the "Registration Expenses"). To the extent that any Registration
Expenses are incurred, assumed or paid by any holder of Registrable Securities
or any placement or sales agent therefor or underwriter thereof, the Company
shall reimburse such person for the full amount of the Registration Expenses so
incurred, assumed or paid promptly after receipt of a written request therefor.
Notwithstanding the foregoing, the holders of the Registrable Securities being
registered shall pay all agency or brokerage fees and commissions and
underwriting discounts and commissions attributable to the sale of such
Registered Securities and the fees and disbursements of any counsel or other
advisors or experts retained by such holders (severally or jointly), other than
the counsel and experts specifically referred to above, transfer taxes on resale
of any of the Securities by such holders and any advertising expenses incurred
by or on behalf of such holders in connection with any offers they may make.

     5. Representations and Warranties.

     The Company represents and warrants to, and agrees with, each Purchaser and
each of the holders from time to time of Registrable Securities that:

         (a) Each registration statement covering Registrable Securities and
     each prospectus (including any preliminary or summary prospectus) contained
     therein or furnished pursuant to Section 3(c)(ix) hereof and any further
     amendments or supplements to any such registration statement or prospectus,
     when it becomes effective or is filed with the Commission, as the case may
     be, and, in the case of an underwritten offering of Registrable Securities,
     at the time of the closing under the underwriting agreement relating
     thereto, will conform in all material respects to the requirements of the
     Securities Act and the Trust Indenture Act and any such registration
     statement and any amendment thereto will not contain an untrue statement of
     a material fact or omit to state a material fact required to be stated
     therein or necessary to make the statements therein not misleading and any
     such prospectus or any amendment or supplement thereto will not contain an
     untrue statement of a material fact or omit to state a material fact
     required to be stated therein or necessary to make the statements therein
     not misleading in light of the circumstances then existing; and at all
     times subsequent to the Effective Time of any such registration statement
     when a

                                      -12-
<PAGE>

     prospectus would be required to be delivered under the Securities Act,
     other than from (i) such time as a notice has been given to holders of
     Registrable Securities pursuant to Section 3(c)(vi)(F) hereof until (ii)
     such time as the Company furnishes an amended or supplemented prospectus
     pursuant to Section 3(d) hereof, each such registration statement, and each
     prospectus (including any summary prospectus) contained therein or
     furnished pursuant to Section 3(c)(ix) hereof, as then amended or
     supplemented, will conform in all material respects to the requirements of
     the Securities Act and the Trust Indenture Act and will not contain an
     untrue statement of a material fact or omit to state a material fact
     required to be stated therein or necessary to make the statements therein
     not misleading in the light of the circumstances then existing; provided,
     however, that this representation and warranty shall not apply to any
     statements or omissions made in reliance upon and in conformity with
     information furnished in writing to the Company by a holder of Registrable
     Securities or any placement or sales agent therefor or underwriter thereof
     expressly for use therein.

         (b) Any documents incorporated by reference in any prospectus referred
     to in Section 5(a) hereof, when they become or became effective or are or
     were filed with the Commission, as the case may be, will conform or
     conformed in all material respects to the requirements of the Securities
     Act or the Exchange Act, as applicable, and none of such documents will
     contain or contained an untrue statement of a material fact or will omit or
     omitted to state a material fact required to be stated therein or necessary
     to make the statements therein not misleading; provided, however, that this
     representation and warranty shall not apply to any statements or omissions
     made in reliance upon and in conformity with information furnished in
     writing to the Company by a holder of Registrable Securities expressly for
     use therein.

         (c) The compliance by the Company with all of the provisions of this
     Exchange and Registration Rights Agreement and the consummation of the
     transactions herein contemplated will not conflict with or result in a
     breach of any of the terms or provisions of, or constitute a default under,
     any indenture, mortgage, deed of trust, loan agreement or other agreement
     or instrument to which the Company or any subsidiary of the Company is a
     party or by which the Company or any subsidiary of the Company is bound or
     to which any of the property or assets of the Company or any subsidiary of
     the Company is subject, nor will such action result in any violation of the
     provisions of the certificate of incorporation, as amended, or the by-laws
     of the Company or any statute or any order, rule or regulation of any court
     or governmental agency or body having jurisdiction over the Company or any
     subsidiary of the Company or any of their properties; and no consent,
     approval, authorization, order, registration or qualification of or with
     any such court or governmental agency or body is required for the
     consummation by the Company of the transactions contemplated by this
     Exchange and Registration Rights Agreement, except the registration under
     the Securities Act of the Registrable Securities, qualification of the
     Indenture under the Trust Indenture Act and such consents, approvals,
     authorizations, registrations or qualifications as may be required under
     State securities or blue sky laws in connection with the offering and
     distribution of the Registrable Securities.

         (d) This Exchange and Registration Rights Agreement has been duly
     authorized, executed and delivered by the Company.

                                      -13-
<PAGE>

     6. Indemnification.

     (a) Indemnification by the Company. Upon the registration of the
Registrable Securities pursuant to Section 2 hereof, and in consideration of the
agreements of the Purchasers contained herein, and as an inducement to the
Purchasers to purchase the Securities, the Company shall, and it hereby agrees
to, (i) indemnify and hold harmless each of the holders of Registrable
Securities to be included in such registration, and each person who participates
as a placement or sales agent or as an underwriter in any offering or sale of
such Registrable Securities against any losses, claims, damages or liabilities,
joint or several, to which such holder, agent or underwriter may become subject
under the Securities Act or otherwise, insofar as such losses, claims, damages
or liabilities (or actions in respect thereof) arise out of or are based upon an
untrue statement or alleged untrue statement of a material fact contained in any
registration statement under which such Registrable Securities were registered
under the Securities Act, or any preliminary, final or summary prospectus
contained therein or furnished by the Company to any such holder, agent or
underwriter, or any amendment or supplement thereto, or arise out of or are
based upon the omission or alleged omission to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading, and (ii) reimburse such holder, such agent and such underwriter for
any legal or other expenses reasonably incurred by them in connection with
investigating or defending any such action or claim as such expenses are
incurred; provided, however, that the Company shall not be liable to any such
person in any such case to the extent that any such loss, claim, damage or
liability arises out of or is based upon an untrue statement or alleged untrue
statement or omission or alleged omission made in any such registration
statement, or preliminary, final or summary prospectus, or amendment or
supplement thereto, in reliance upon and in conformity with written information
furnished to the Company by any holders of Registrable Securities or any
placement or sales agent thereof or underwriter thereof expressly for use
therein;

     (b) Indemnification by the Holders and any Agents and Underwriters. The
Company may require, as a condition to including any Registrable Securities in
any registration statement filed pursuant to Section 2 hereof and to entering
into any placement or underwriting agreement with respect thereto, that the
Company shall have received an undertaking reasonably satisfactory to it from
the holder of such Registrable Securities and from each placement agent or
underwriter named in any such placement agreement or underwriting agreement,
severally and not jointly, to (i) indemnify and hold harmless the Company, and
all other holders of Registrable Securities, against any losses, claims, damages
or liabilities to which the Company or such other holders of Registrable
Securities may become subject, under the Securities Act or otherwise, insofar as
such losses, claims, damages or liabilities (or actions in respect thereof)
arise out of or are based upon an untrue statement or alleged untrue statement
of a material fact contained in such registration statement, or any preliminary,
final or summary prospectus contained therein or furnished by the Company to any
such holder, agent or underwriter, or any amendment or supplement thereto, or
arise out of or are based upon the omission or alleged omission to state therein
a material fact required to be stated therein or necessary to make the
statements therein not misleading, in each case to the extent, but only to the
extent,

                                      -14-
<PAGE>

that such untrue statement or alleged untrue statement or omission or alleged
omission was made in reliance upon and in conformity with written information
furnished to the Company by such holder, agent or underwriter expressly for use
therein, and (ii) reimburse the Company for any legal or other expenses
reasonably incurred by the Company in connection with investigating or defending
any such action or claim as such expenses are incurred; provided, however, that
no such holder shall be required to undertake liability to any person under this
Section 6(b) for any amounts in excess of the dollar amount of the proceeds to
be received by such holder from the sale of such holder's Registrable Securities
pursuant to such registration.

     (c) Notices of Claims, Etc. Promptly after receipt by an indemnified party
under subsection (a) or (b) above of written notice of the commencement of any
action, such indemnified party shall, if a claim in respect thereof is to be
made against an indemnifying party pursuant to the indemnification provisions of
or contemplated by this Section 6, notify such indemnifying party in writing of
the commencement of such action; but the omission so to notify the indemnifying
party shall not relieve it from any liability which it may have to any
indemnified party other than under the indemnification provisions of or
contemplated by Section 6(a) or 6(b) hereof. In case any such action shall be
brought against any indemnified party and it shall notify an indemnifying party
of the commencement thereof, such indemnifying party shall be entitled to
participate therein and, to the extent that it shall wish, jointly with any
other indemnifying party similarly notified, to assume the defense thereof, with
counsel satisfactory to such indemnified party (who shall not, except with the
consent of the indemnified party, be counsel to the indemnifying party), and,
after notice from the indemnifying party to such indemnified party of its
election so to assume the defense thereof, such indemnifying party shall not be
liable to such indemnified party for any legal expenses of other counsel or any
other expenses, in each case subsequently incurred by such indemnified party, in
connection with the defense thereof other than reasonable costs of
investigation. No indemnifying party shall, without the written consent of the
indemnified party, effect the settlement or compromise of, or consent to the
entry of any judgment with respect to, any pending or threatened action or claim
in respect of which indemnification or contribution may be sought hereunder
(whether or not the indemnified party is an actual or potential party to such
action or claim) unless such settlement, compromise or judgment (i) includes an
unconditional release of the indemnified party from all liability arising out of
such action or claim and (ii) does not include a statement as to or an admission
of fault, culpability or a failure to act by or on behalf of any indemnified
party. No indemnifying party shall be liable for the cost of any settlement
effected by an indemnified party without the written consent of such
indemnifying party, which consent shall not be unreasonably withheld. In no
event shall any indemnifying party be liable for the fees and expenses of more
than one firm or counsel (except to the extent that local counsel, in addition
to such firm or counsel, is required for effective representation) to represent
all indemnified parties with respect to a single action or separate but
substantially similar actions in the same jurisdiction arising out of the same
general allegations.

     (d) Contribution. If for any reason the indemnification provisions
contemplated by Section 6(a) or Section 6(b) are unavailable to or insufficient
to hold harmless an indemnified party in respect of any losses, claims, damages
or liabilities (or actions in respect thereof) referred to therein, then each
indemnifying party shall contribute to the amount paid or payable by such
indemnified party as a result of such losses, claims, damages or liabilities (or
actions in respect

                                      -15-
<PAGE>

thereof) in such proportion as is appropriate to reflect not only (i) the
relative benefits received by the holders of the Registrable Securities, on the
one hand, and any agents or underwriters, on the other, from any offering or
sale of the Registrable Securities, but also (ii) the relative fault of the
indemnifying party and the indemnified party in connection with the statements
or omissions which resulted in such losses, claims, damages or liabilities (or
actions in respect thereof), as well as any other relevant equitable
considerations. The relative benefits received by the holders of the Registrable
Securities on the one hand and any agents or underwriters on the other shall be
deemed to be in the same proportion as the total net proceeds from any offering
or sale thereof (before deducting expenses) received by such holders bear to the
total discounts and commissions received by any such agents or underwriters with
respect to such offer or sale. The relative fault of such indemnifying party and
indemnified party shall be determined by reference to, among other things,
whether the untrue or alleged untrue statement of a material fact or omission or
alleged omission to state a material fact relates to information supplied by
such indemnifying party or by such indemnified party, and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission. The parties hereto agree that it would not be just
and equitable if contributions pursuant to this Section 6(d) were determined by
pro rata allocation (even if the holders or any agents or underwriters or all of
them were treated as one entity for such purpose) or by any other method of
allocation which does not take account of the equitable considerations referred
to in this Section 6(d). The amount paid or payable by an indemnified party as a
result of the losses, claims, damages, or liabilities (or actions in respect
thereof) referred to above shall be deemed to include any legal or other fees or
expenses reasonably incurred by such indemnified party in connection with
investigating or defending any such action or claim. Notwithstanding the
provisions of this Section 6(d), no holder shall be required to contribute any
amount in excess of the amount by which the dollar amount of the proceeds
received by such holder from the sale of any Registrable Securities (after
deducting any fees, discounts and commissions applicable thereto) exceeds the
amount of any damages which such holder has otherwise been required to pay by
reason of such untrue or alleged untrue statement or omission or alleged
omission, and no underwriter or agent shall be required to contribute any amount
in excess of the amount by which the total price at which the Registrable
Securities placed or underwritten by it and distributed to the public were
offered to the public exceeds the amount of any damages which such underwriter
or agent has otherwise been required to pay by reason of such untrue or alleged
untrue statement or omission or alleged omission. No person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Securities Act)
shall be entitled to contribution from any person who was not guilty of such
fraudulent misrepresentation. The holders' and any underwriters' or agent's
obligations in this Section 6(d) to contribute shall be several in proportion to
the principal amount of Registrable Securities registered, underwritten or
placed, as the case may be, by them and not joint.

     (e) The obligations of the Company under this Section 6 shall be in
addition to any liability which the Company may otherwise have and shall extend,
upon the same terms and conditions, to each officer, director and partner of
each holder, agent and underwriter and each person, if any, who controls any
holder, agent or underwriter within the meaning of the Securities Act; and the
obligations of the holders and any agents or underwriters contemplated by this
Section 6 shall be in addition to any liability which the respective holder,
agent or underwriter may otherwise have and shall extend, upon the same terms
and conditions, to each officer and

                                      -16-
<PAGE>

director of the Company (including any person who, with his consent, is named in
any registration statement as about to become a director of the Company) and to
each person, if any, who controls the Company within the meaning of the
Securities Act.

     7. Underwritten Offerings.

     (a) Selection of Underwriters. If any of the Registrable Securities covered
by the Shelf Registration are to be sold pursuant to an underwritten offering,
the managing underwriter or underwriters thereof shall be designated by the
holders of at least a majority in aggregate principal amount of the Registrable
Securities to be included in such offering, provided that such designated
managing underwriter or underwriters is or are reasonably acceptable to the
Company.

     (b) Participation by Holders. Each holder of Registrable Securities hereby
agrees with each other such holder that no such holder may participate in any
underwritten offering hereunder unless such holder (i) agrees to sell such
holder's Registrable Securities on the basis provided in any underwriting
arrangements approved by the persons entitled hereunder to approve such
arrangements and (ii) completes and executes all questionnaires, powers of
attorney, indemnities, underwriting agreements and other documents reasonably
required under the terms of such underwriting arrangements.

     (c) Consolidated Earnings Statements. In the event of an underwritten
offering, the Company agrees to make generally available to its securityholders
as soon as practicable, but in any event not later than eighteen months after
the effective date of the applicable registration statement (as defined in Rule
158(c) under the Act), a consolidated earnings statement of the Company
complying with Section 11(a) of the Act and the rules and regulations of the
Commission thereunder (including, at the option of the Company, Rule 158 under
the Act).

     8. Rule 144.

     The Company covenants to the holders of Registrable Securities that to the
extent it shall be required to do so under the Exchange Act, the Company shall
timely file the reports required to be filed by it under the Exchange Act or the
Securities Act (including, but not limited to, the reports under Section 13 and
15(d) of the Exchange Act referred to in subparagraph (c)(1) of Rule 144 adopted
by the Commission under the Securities Act) and the rules and regulations
adopted by the Commission thereunder, and shall take such further action as any
holder of Registrable Securities may reasonably request, all to the extent
required from time to time to make Rule 144 available to such holder for the
sale of Registrable Securities without registration under the Securities Act
within the limitations of the exemption provided by Rule 144 under the
Securities Act, as such Rule may be amended from time to time, or any similar
or successor rule or regulation hereafter adopted by the Commission. Upon the
request of any holder of Registrable Securities in connection with that holder's
sale pursuant to Rule 144, the Company shall deliver to such holder a written
statement as to whether it has complied with such requirements.

     9. Miscellaneous.

                                      -17-
<PAGE>

     (a) No Inconsistent Agreements. The Company represents, warrants, covenants
and agrees that it has not granted, and shall not grant, registration rights
with respect to Registrable Securities or any other securities which would be
inconsistent with the terms contained in this Exchange and Registration Rights
Agreement.

     (b) Specific Performance. The parties hereto acknowledge that there would
be no adequate remedy at law if any party fails to perform any of its
obligations hereunder and that each party may be irreparably harmed by any such
failure, and accordingly agree that each party, in addition to any other remedy
to which it may be entitled at law or in equity, shall be entitled to compel
specific performance of the obligations of any other party under this Exchange
and Registration Rights Agreement in accordance with the terms and conditions of
this Exchange and Registration Rights Agreement, in any court of the United
States or any State thereof having jurisdiction.

     (c) Notices. All notices, requests, claims, demands, waivers and other
communications hereunder shall be in writing and shall be deemed to have been
duly given when delivered by hand, if delivered personally or by courier, or
three days after being deposited in the mail (registered or certified mail,
postage prepaid, return receipt requested) as follows: If to the Company, to it
at 425 Woods Mill South, Town & Country, Missouri 63017, Attention: David L.
Solomon and if to a holder, to the address of such holder set forth in the
security register or other records of the Company, or to such other address as
any party may have furnished to the others in writing in accordance herewith,
except that notices of change of address shall be effective only upon receipt.

     (d) Parties in Interest. All the terms and provisions of this Exchange and
Registration Rights Agreement shall be binding upon, shall inure to the benefit
of and shall be enforceable by the respective successors and assigns of the
parties hereto. In the event that any transferee of any holder of Registrable
Securities shall become a holder of Registrable Securities, in any manner,
whether by gift, bequest, purchase, operation of law or otherwise, such
transferee shall, without any further writing or action of any kind, be deemed a
party hereto for all purposes and such Registrable Securities shall be held
subject to all of the terms of this Exchange and Registration Rights Agreement,
and by taking and holding such Registrable Securities such transferee shall be
entitled to receive the benefits of and be conclusively deemed to have agreed to
be bound by and to perform all of the terms and provisions of this Exchange and
Registration Rights Agreement. If the Company shall so request, any such
successor, assign or transferee shall agree in writing to acquire and hold the
Registrable Securities subject to all of the terms hereof.

     (e) Survival. The respective indemnities, agreements, representations,
warranties and each other provision set forth in this Exchange and Registration
Rights Agreement or made pursuant hereto shall remain in full force and effect
regardless of any investigation (or statement as to the results thereof) made by
or on behalf of any holder of Registrable Securities, any director, officer or
partner of such holder, any agent or underwriter or any director, officer or
partner thereof, or any controlling person of any of the foregoing, and shall
survive delivery of and payment for the Registrable Securities pursuant to the
Purchase Agreement and the transfer and

                                      -18-
<PAGE>

registration of Registrable Securities by such holder and the consummation of an
Exchange Offer.

     (f) LAW GOVERNING. THIS EXCHANGE AND REGISTRATION RIGHTS AGREEMENT SHALL BE
GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

     (g) Headings. The descriptive headings of the several Sections and
paragraphs of this Exchange and Registration Rights Agreement are inserted for
convenience only, do not constitute a part of this Exchange and Registration
Rights Agreement and shall not affect in any way the meaning or interpretation
of this Exchange and Registration Rights Agreement.

     (h) Entire Agreement; Amendments. This Exchange and Registration Rights
Agreement and the other writings referred to herein (including the Indenture and
the form of Securities) or delivered pursuant hereto which form a part hereof
contain the entire understanding of the parties with respect to its subject
matter. This Exchange and Registration Rights Agreement supersedes all prior
agreements and understandings between the parties with respect to its subject
matter. This Exchange and Registration Rights Agreement may be amended and the
observance of any term of this Exchange and Registration Rights Agreement may be
waived (either generally or in a particular instance and either retroactively or
prospectively) only by a written instrument duly executed by the Company and the
holders of at least 66-2/3 percent in aggregate principal amount of the
Registrable Securities at the time outstanding. Each holder of any Registrable
Securities at the time or thereafter outstanding shall be bound by any amendment
or waiver effected pursuant to this Section 9(h), whether or not any notice,
writing or marking indicating such amendment or waiver appears on such
Registrable Securities or is delivered to such holder.

     (i) Inspection. For so long as this Exchange and Registration Rights
Agreement shall be in effect, this Exchange and Registration Rights Agreement
and a complete list of the names and addresses of all the holders of Registrable
Securities shall be made available for inspection and copying on any business
day by any holder of Registrable Securities at the offices of the Company at the
address thereof set forth in Section 9(c) above or at the office of the Trustee
under the Indenture.

     (j) Counterparts. This agreement may be executed by the parties in
counterparts, each of which shall be deemed to be an original, but all such
respective counterparts shall together constitute one and the same instrument.

                                      -19-
<PAGE>

     Agreed to and accepted as of the date referred to above.

                                        BROOKS FIBER PROPERTIES, INC.

                                        By   /s/ David Solomon
                                             -----------------------------------
                                             Name: David L. Solomon
                                             Title: Executive Vice President

                                        GOLDMAN, SACHS & CO.
                                        SALOMON BROTHERS INC
                                        MERRILL LYNCH, PIERCE, FENNER & SMITH
                                          INCORPORATED

                                        /s/ Goldman, Sachs & Co.
                                        ----------------------------------------
                                                (Goldman, Sachs & Co.)

                                      -20-

                                                                    EXHIBIT 99.1

[Corporate Logo]  BROOKS FIBER PROPERTIES


FOR IMMEDIATE RELEASE

Contact: Waymon R. Tipton
Senior Vice President
(800) 799-8914, ext. 313

                        BROOKS FIBER PROPERTIES ANNOUNCES
                COMPLETION OF $250 MILLION PRIVATE DEBT PLACEMENT

St. Louis, MO (May 30, 1997)--Brooks Fiber Properties, Inc. (Nasdaq/NM:BFPT), a
nationwide provider of competitive local telecommunications services, today
announced the completion of a $250 million private placement of senior notes.
The notes will pay interest semiannually on June 1 and December 1 at a rate of
10% with a final maturity date of June 1, 2007. Goldman, Sachs & Co., Salomon
Brothers Inc and Merrill Lynch & Co. acted as placement agents for the
transaction which closed May 29, 1997.

         Commenting on the transaction, James C. Allen, Brooks Fiber Properties'
chief executive officer, commented, "We are very pleased with the favorable
response this offering has received in the marketplace. This financing, in
conjunction with a planned bank credit facility currently being discussed with
several financial institutions, will fully fund the Company's known capital
needs in our current 44 markets."

         Brooks Fiber Properties, Inc., headquartered in St. Louis, Missouri, is
a leading full service provider of competitive local telecommunications services
in cities across the United States. With networks operational or under
construction in 44 U.S. cities, the company provides its customers with advanced
and reliable high-capacity voice, video, data and other enhanced
telecommunications services.

         You can now receive fax copies of recent Brooks Fiber news releases 24
hours a day by calling 1-888-329-2304 and or visit Brooks Fiber on the Internet
at www.Brooks.net






Brooks Fiber Properties, Inc.
425 Woods Mill Road South/Suite 300
Town & Country, Missouri 63017
314 878-1616   Fax 314 878-3211



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