NEXTEL COMMUNICATIONS INC
8-K, 1999-06-23
RADIOTELEPHONE COMMUNICATIONS
Previous: HT INSIGHT FUNDS INC, 497, 1999-06-23
Next: PILGRIM PRIME RATE TRUST, 497, 1999-06-23



<PAGE>   1

                       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

<TABLE>
<S>                                                   <C>
Date of Report (Date of earliest event reported):       June 23, 1999 (June 16, 1999)
                                                      ---------------------------------
</TABLE>


                           NEXTEL COMMUNICATIONS, INC.
             (Exact name of registrant as specified in its charter)

<TABLE>
<S>                              <C>                   <C>
          DELAWARE                  0-19656                36-3939651
(State or other jurisdiction     (Commission            (I.R.S. Employer
      of incorporation)           File Number)         Identification No.)

         2001 EDMUND HALLEY DRIVE, RESTON, VIRGINIA          20191
          (Address of principal executive offices)         (Zip Code)
</TABLE>

Registrant's telephone number, including area code:          (703) 433-4000
                                                         ----------------------




- -------------------------------------------------------------------------------
          (Former name or former address, if changed since last report)


<PAGE>   2

ITEM 5. OTHER EVENTS.

Convertible Notes Offering. On June 16, 1999 Nextel Communications, Inc.
("Nextel") completed the sale of $500.0 million in principal amount at maturity
of 4 3/4% Convertible Senior Notes due 2007 (the "Convertible Notes"). On June
22, 1999 Nextel completed the sale of an additional $100.0 million in principal
amount at maturity of Convertible Notes to the initial purchasers to cover
over-allotments. These transactions generated approximately $588.0 million in
net proceeds. Cash interest on the principal amount of the Convertible Notes is
payable semi-annually in arrears in cash on January 1 and July 1 of each year,
commencing January 1, 2000 at a rate of 4 3/4% per annum. However, the first
interest payment on the Convertible Notes will include interest from June 16,
1999. The Convertible Notes are convertible at the option of the holders, prior
to redemption or maturity, into the Company's common stock at a conversion price
of $47.308 per share (subject to adjustment upon the occurrence of certain
events). The reported last sale price of Nextel's common stock on the Nasdaq
National Market on June 10, 1999, the date on which Nextel agreed to sell the
Convertible Notes, was $37.25. The Convertible Notes are redeemable at Nextel's
option commencing after July 6, 2002 at specified redemption prices plus
accrued interest. The Convertible Notes rank equally with all of Nextel's
unsubordinated and unsecured indebtedness. Nextel intends to use the net
proceeds from this offering to fund capital expenditures, investments, working
capital needs and other general corporate purposes.

The offering of the Convertible Notes was effected as a private placement under
the Securities Act of 1933, as amended (the "Securities Act"). Neither the
offering of Nextel's Convertible Notes, nor of Nextel's common stock issuable
upon conversion thereof, have been registered under the Securities Act and none
of such securities may be offered or sold in the United States absent an
effective registration statement or an applicable exemption from the
registration requirements of the Securities Act. This announcement does not
constitute an offer to sell or the solicitation of an offer to buy the
Convertible Notes or underlying shares of Nextel's common stock issuable upon
conversion of such Convertible Notes.

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

        (a)     FINANCIAL STATEMENTS OF BUSINESS ACQUIRED.
                NONE

        (b)     PRO FORMA FINANCIAL INFORMATION.
                NONE

        (c)     EXHIBITS.

<TABLE>
<CAPTION>
                EXHIBIT NO.     EXHIBIT DESCRIPTION
                -----------     -------------------
                <S>             <C>
                    4.1         Indenture, dated as of June 16, 1999, between Nextel Communications,
                                Inc., and Harris Trust and Savings Bank, as Trustee, relating to
                                Nextel's 4 3/4% Convertible Senior Notes due 2007.
</TABLE>


                                     - 1 -
<PAGE>   3

                                    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.

                                        NEXTEL COMMUNICATIONS, INC.

Date: June 23, 1999                     By: /s/ THOMAS J. SIDMAN
                                           ------------------------------------
                                           Thomas J. Sidman
                                           Vice President and General Counsel


                                     - 2 -
<PAGE>   4

<TABLE>
<CAPTION>
EXHIBIT NO.      EXHIBIT DESCRIPTION
- -----------      -------------------
<S>              <C>
    4.1          Indenture, dated as of June 16, 1999, between Nextel Communications,
                 Inc., and Harris Trust and Savings Bank, as Trustee, relating to
                 Nextel's 4 3/4% Convertible Senior Notes due 2007.
</TABLE>


                                     - 3 -

<PAGE>   1
                                                                     EXHIBIT 4.1

                          NEXTEL COMMUNICATIONS, INC.

                                       TO

                         HARRIS TRUST AND SAVINGS BANK,
                                    Trustee


                                   INDENTURE


                           Dated as of June 16, 1999

                    4 3/4% Convertible Senior Notes due 2007

<PAGE>   2

                          NEXTEL COMMUNICATIONS, INC.

     Reconciliation and Tie Between the Trust Indenture Act of 1939 and
Indenture, dated as of June 16, 1999, between Nextel Communications, Inc. and
Harris Trust and Savings Bank, as Trustee.

<TABLE>
<CAPTION>
TRUST INDENTURE ACT SECTION                  INDENTURE SECTION
<S>                                             <C>
Section 310(a)(1)                                         7.10
(a)(2)                                                    7.10
(a)(3)                                          Not Applicable
(a)(4)                                          Not Applicable
(a)(5)                                                    7.10
(b)                                                        7.6
Section 311(a)                                            7.13
(b)                                                       7.13
(b)(2)                                                    7.13
Section 312(a)                                     5.1; 5.2(a)
(b)                                                     5.2(b)
(c)                                                     5.2(c)
Section 313(a)                                          5.3(a)
(b)                                                     5.3(a)
(c)                                                     5.3(a)
(d)                                                     5.3(b)
Section 314(a)                                             5.4
(b)                                             Not Applicable
(c)(1)                                                    15.5
(c)(2)                                                    15.5
(c)(3)                                          Not Applicable
(d)                                             Not Applicable
(e)                                                       15.5
Section 315(a)                                             7.1
(b)                                                        7.5
(c)                                                        7.1
(d)                                                        7.1
(d)(1)                                                     7.1
(d)(2)                                                     7.2
(d)(3)                                                     7.2
(e)                                                        6.8
Section 316(a)                                             6.7
(a)(1)(A)                                                  6.7
(a)(1)(B)                                                  6.7
(a)(2)                                          Not Applicable
(b)                                                        6.4
</TABLE>

<PAGE>   3

<TABLE>
<S>                                                       <C>
Section 317(a)(1)                                          6.5
(a)(2)                                                     6.5
(b)                                                        4.4
Section 318(a)                                            15.7
</TABLE>

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

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

<PAGE>   4

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                             Page
<S>                                                                            <C>
                                   ARTICLE I
                                  DEFINITIONS
Section 1.1   Definitions.....................................................  1

                                   ARTICLE II
       ISSUE, DESCRIPTION, EXECUTION, REGISTRATION AND EXCHANGE OF NOTES

Section 2.1   Designation Amount and Issue of Notes...........................  7
Section 2.2   Form of Notes...................................................  7
Section 2.3   Date and Denomination of Notes; Payments of Interest
              (including Liquidated Damages  Amount, if any)..................  8
Section 2.4   Execution of Notes.............................................. 10
Section 2.5   Exchange and Registration of Transfer of Notes;
                    Restrictions on Transfer; Depositary...................... 10
Section 2.6   Mutilated, Destroyed, Lost or Stolen Notes...................... 18
Section 2.7   Temporary Notes................................................. 19
Section 2.8   Cancellation of Notes Paid, Etc................................. 19
Section 2.9   CUSIP Numbers................................................... 19

                                  ARTICLE III
                       REDEMPTION OR REPURCHASE OF NOTES

Section 3.1   Redemption by the Company....................................... 20
Section 3.2   Notice of Redemption; Selection of Notes for Redemption......... 20
Section 3.3   Payment of Notes Called for Redemption.......................... 22
Section 3.4   Conversion Arrangement on Call for Redemption................... 22
Section 3.5   Repurchase at Option of Holders................................. 23

                                   ARTICLE IV
                      PARTICULAR COVENANTS OF THE COMPANY

Section 4.1   Payment of Principal, Premium and Interest...................... 25
section 4.2   Maintenance of Office or Agency................................. 25
Section 4.3   Appointments to Fill Vacancies in Trustee's Office.............. 26
Section 4.4   Provisions as to Paying Agent................................... 26
Section 4.5   Existence....................................................... 27
Section 4.6   Maintenance of Properties....................................... 27
Section 4.7   Payment of Taxes and Other Claims............................... 27
Section 4.8   Rule 144A Information Requirement............................... 28
Section 4.9   Stay, Extension and Usury Laws.................................. 28
</TABLE>

<PAGE>   5

<TABLE>
<S>                                                                            <C>
Section 4.10  Compliance Certificate.......................................... 28

                                   ARTICLE V
         NOTEHOLDERS' LISTS AND REPORTS BY THE COMPANY AND THE TRUSTEE

Section 5.1   Noteholders' Lists.............................................. 29
Section 5.2   Preservation and Disclosure of Lists............................ 29
Section 5.3   Reports by Trustee.............................................. 30
Section 5.4   Reports by Company.............................................. 30

                                   ARTICLE VI
                    REMEDIES OF THE TRUSTEE AND NOTEHOLDERS
                             ON AN EVENT OF DEFAULT

Section 6.1   Events of Default............................................... 30
Section 6.2   Payments of Notes on Default; Suit Therefor..................... 32
Section 6.3   Application of Monies Collected by Trustee...................... 34
Section 6.4   Proceedings by Noteholder....................................... 35
Section 6.5   Proceedings by Trustee.......................................... 36
Section 6.6   Remedies Cumulative and Continuing.............................. 36
Section 6.7   Direction of Proceedings and Waiver of Defaults by
                    Majority of Noteholders................................... 36
Section 6.8   Undertaking to Pay Costs........................................ 37

                                  ARTICLE VII
                             CONCERNING THE TRUSTEE

Section 7.1   General......................................................... 37
Section 7.2   Certain Rights of Trustee....................................... 38
Section 7.3   Individual Rights of Trustee.................................... 39
Section 7.4   Trustee's Disclaimer............................................ 39
Section 7.5   Notice of Default............................................... 39
Section 7.6   Conflicting Interests of Trustee................................ 39
Section 7.7   Compensation and Indemnity...................................... 39
Section 7.8   Replacement of Trustee.......................................... 40
Section 7.9   Successor Trustee by Merger, Etc................................ 41
Section 7.10  Eligibility..................................................... 41
Section 7.11  Money Held in Trust............................................. 41
Section 7.12  Withholding Taxes............................................... 41
Section 7.13  Preferential Collection of Claims............................... 42
Section 7.14  Trustee's Application for Instructions from the Company......... 42
</TABLE>

                                     - ii -

<PAGE>   6

<TABLE>
<S>                                                                            <C>
                                  ARTICLE VIII
                           CONCERNING THE NOTEHOLDERS

Section 8.1   Action by Noteholders........................................... 42
Section 8.2   Proof of Execution by Noteholders............................... 43
Section 8.3   Who Are Deemed Absolute Owners.................................. 43
Section 8.4   Company-Owned Notes Disregarded................................. 43
Section 8.5   Revocation of Consents; Future Holders Bound.................... 43

                                   ARTICLE IX
                             NOTEHOLDERS' MEETINGS

Section 9.1   Purpose of Meetings............................................. 44
Section 9.2   Call of Meetings by Trustee..................................... 44
Section 9.3   Call of Meetings by Company or Noteholders...................... 45
Section 9.4   Qualifications for Voting....................................... 45
Section 9.5   Regulations..................................................... 45
Section 9.6   Voting.......................................................... 46
Section 9.7   Exercise of Rights of Trustee or Noteholders May Not
                    be Hindered or Delayed by Call of Meeting................. 46
Section 9.8   Procedures Not Exclusive........................................ 46

                                   ARTICLE X
                            SUPPLEMENTAL INDENTURES

Section 10.1  Supplemental Indentures Without Consent of Noteholders.......... 46
Section 10.2  Supplemental Indenture with Consent of Noteholders.............. 48
Section 10.3  Effect of Supplemental Indenture................................ 49
Section 10.4  Notation on Notes............................................... 49
Section 10.5  Evidence of Compliance of Supplemental Indenture to Be
                    Furnished to Trustee...................................... 49

                                   ARTICLE XI
               CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE


Section 11.1  Company May Consolidate, Etc., on Certain Terms................. 50
Section 11.2  Successor Corporation to Be Substituted......................... 50
Section 11.3  Opinion of Counsel to Be Given Trustee.......................... 51

                                  ARTICLE XII
                    SATISFACTION AND DISCHARGE OF INDENTURE

Section 12.1  Discharge of Indenture.......................................... 51
Section 12.2  Deposited Monies to Be Held in Trust by Trustee................. 52
Section 12.3  Paying Agent to Repay Monies Held............................... 52
Section 12.4  Return of Unclaimed Monies...................................... 52
Section 12.5  Reinstatement................................................... 52
</TABLE>

                                    - iii -

<PAGE>   7

<TABLE>
<S>                                                                            <C>
                                  ARTICLE XIII
        IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS

Section 13.1  Indenture and Notes Solely Corporate Obligations................ 53

                                  ARTICLE XIV
                              CONVERSION OF NOTES

Section 14.1  Right to Convert................................................ 53
Section 14.2  Exercise of Conversion Privilege; Issuance of Common
                    Stock on Conversion; No Adjustment for Interest
                    or Dividends.............................................. 54
Section 14.3  Cash Payments or Rounding Up in Lieu of Fractional Shares....... 55
Section 14.4  Conversion Price................................................ 55
Section 14.5  Adjustment of Conversion Price.................................. 56
Section 14.6  Effect of Reclassification, Consolidation, Merger or Sale....... 63
Section 14.7  Taxes on Shares Issued.......................................... 64
Section 14.8  Reservation of Shares; Shares to Be Fully Paid;
                    Compliance with Governmental Requirements;
                    Listing of Common Stock................................... 64
Section 14.9  Responsibility of Trustee....................................... 65
Section 14.10 Notice to Holders Prior to Certain Actions...................... 66

                                   ARTICLE XV
                            MISCELLANEOUS PROVISIONS

Section 15.1  Provisions Binding on Company's Successors...................... 66
Section 15.2  Official Acts by Successor Corporation.......................... 67
Section 15.3  Addresses for Notices, Etc...................................... 67
Section 15.4  Governing Law................................................... 68
Section 15.5  Evidence of Compliance with Conditions Precedent;
                    Certificates to Trustee................................... 68
Section 15.6  Legal Holidays.................................................. 68
Section 15.7  Trust Indenture Act............................................. 68
Section 15.8  No Security Interest Created.................................... 69
Section 15.9  Benefits of Indenture........................................... 69
Section 15.10 Table of Contents, Headings, Etc................................ 69
Section 15.11 Authenticating Agent............................................ 69
Section 15.12 Execution in Counterparts....................................... 70
</TABLE>

Exhibit A - Form of Note
Exhibit B - Form of Accredited Investor Letter

                                     - iv -

<PAGE>   8

                                   INDENTURE

     INDENTURE, dated as of June 16, 1999, between Nextel Communications, Inc.,
a Delaware corporation (hereinafter called the "Company," as more fully set
forth in Section 1.1), and Harris Trust and Savings Bank, an Illinois banking
corporation, as trustee hereunder (hereinafter called the "Trustee," as more
fully set forth in Section 1.1).

                                  WITNESSETH:

     WHEREAS, for its lawful corporate purposes, the Company has duly
authorized the issue of its 4 3/4% Convertible Senior Notes due 2007 (the
"Notes"), in an aggregate principal amount not to exceed $500,000,000 (or
$600,000,000 if the over-allotment option set forth in Section 3 of the
Purchase Agreement dated June 10, 1999 between the Company and the Placement
Agents is exercised in full) and, to provide the terms and conditions upon
which the Notes are to be authenticated, issued and delivered, the Company has
duly authorized the execution and delivery of this Indenture; and

     WHEREAS, the Notes, the certificate of authentication to be borne by the
Notes, a form of assignment, a form of option to elect repayment upon a
Fundamental Change, and a form of conversion notice to be borne by the Notes
are to be substantially in the forms hereinafter provided for; and

     WHEREAS, all acts and things necessary to make the Notes, when executed by
the Company and authenticated and delivered by the Trustee or a duly authorized
authenticating agent, as in this Indenture provided, the valid, binding and
legal obligations of the Company, and to constitute these presents a valid
agreement according to its terms, have been done and performed, and the
execution of this Indenture and the issue hereunder of the Notes have in all
respects been duly authorized.

     NOW, THEREFORE, THIS INDENTURE WITNESSETH:

     That in order to declare the terms and conditions upon which the Notes
are, and are to be, authenticated, issued and delivered, and in consideration
of the premises and of the purchase and acceptance of the Notes by the holders
thereof, the Company covenants and agrees with the Trustee for the equal and
proportionate benefit of the respective holders from time to time of the Notes
(except as otherwise provided below), as follows:


                                   ARTICLE I

                                  DEFINITIONS

     Section 1.1 Definitions.  The terms defined in this Section 1.1 (except as
herein otherwise expressly provided or unless the context otherwise requires)
for all purposes of this Indenture and

<PAGE>   9

of any indenture supplemental hereto shall have the respective meanings
specified in this Section 1.1.  All other terms used in this Indenture that are
defined in the Trust Indenture Act or which are by reference therein defined in
the Securities Act (except as herein otherwise expressly provided or unless the
context otherwise requires) shall have the meanings assigned to such terms in
said Trust Indenture Act and in said Securities Act as in force at the date of
the execution of this Indenture.  The words "herein," "hereof," "hereunder,"
and words of similar import refer to this Indenture as a whole and not to any
particular Article, Section or other Subdivision.  The terms defined in this
Article include the plural as well as the singular.

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

              Board of Directors:  The term "Board of Directors" shall mean the
Board of Directors of the Company or a committee of such Board duly authorized
to act for it hereunder.

              Business Day:  The term "Business Day" shall mean each Monday,
Tuesday, Wednesday, Thursday and Friday which is not a day on which the
commercial banks in The City of New York or the city in which the Corporate
Trust Office is located are authorized by law to close.

              Closing Price:  The term "Closing Price" shall have the meaning
specified in Section 14.5(h)(1).

              Commission:  The term "Commission" shall mean the Securities and
Exchange Commission.

              Common Stock:  The term "Common Stock" shall mean any stock of
any class of the Company which has no preference in respect of dividends or of
amounts payable in the event of any voluntary or involuntary liquidation,
dissolution or winding-up of the Company, which votes generally in the election
of directors of the Company and which is not subject to redemption by the
Company.  Subject to the provisions of Section 14.6, however, shares issuable
on conversion of Notes shall include only shares of the Class A Common Stock of
the Company, par value $.001 per share, at the date of this Indenture or shares
of any class or classes resulting from any reclassification or
reclassifications thereof and which have no preference in respect of dividends
or of amounts payable in the event of any voluntary or involuntary liquidation,
dissolution or winding-up of the Company, which vote generally in the election
of directors of the Company and which are not subject to redemption by the
Company; provided that if at any time there shall be more than one such
resulting class, the shares of each such class then so issuable shall be
substantially in the proportion

                                       2

<PAGE>   10

which the total number of shares of such class resulting from all such
reclassifications bears to the total number of shares of all such classes
resulting from all such reclassifications.

              Company:  The term "Company" shall mean Nextel Communications,
Inc., a Delaware corporation, having its principal office at the date of
execution of this Indenture at 2001 Edmund Halley Drive, Reston, VA 20191  and,
subject to the provisions of Article XI, shall include its successors and
assigns.

              Conversion Price:  The term "Conversion Price" shall have the
meaning specified in Section 14.4.

              Corporate Trust Office:  The term "Corporate Trust Office" or
other similar term, shall mean the principal office of the Trustee at which at
any particular time its corporate trust business shall be principally
administered, which office is, at the date as of which this Indenture is dated,
located at 311 West Monroe Street, Chicago, Illinois 60606.

              Custodian:  The term "Custodian" shall mean Harris Trust and
Savings Bank, as custodian with respect to the Notes in global form, or any
successor entity thereto.

              Default:  The term "default" shall mean any event that is, or
after notice or passage of time, or both, would be, an Event of Default.

              Defaulted Interest:  The term "Defaulted Interest" shall have the
meaning specified in Section 2.3.

              Depositary:  The term "Depositary" shall mean, with respect to
the Notes issuable or issued in whole or in part in global form, the Person
specified in Section 2.5(d) as the Depositary with respect to such Notes, until
a successor shall have been appointed and become such pursuant to the
applicable provisions of this Indenture, and thereafter, "Depositary" shall
mean or include such successor.

              Event of Default:  The term "Event of Default" shall mean any
event specified in Section 6.1(a), (b), (c), (d) or (e).

              Exchange Act:  The term "Exchange Act" shall mean the Securities
Exchange Act of 1934, as amended, and the rules and regulations promulgated
thereunder, as in effect from time to time.

              Fundamental Change:  The term "Fundamental Change" shall mean the
occurrence of any transaction or event in connection with which all or
substantially all of the Common Stock shall be exchanged for, converted into,
acquired for or constitute solely the right to receive consideration (whether
by means of an exchange offer, liquidation, tender offer, consolidation,
merger, combination, reclassification, recapitalization or otherwise) but does
not include a

                                       3

<PAGE>   11

transaction or event in which at least 90% of that consideration is common
stock listed (or, upon consummation of or immediately following such
transaction or event, which will be listed) on a United States national
securities exchange or approved for quotation on the Nasdaq National Market or
any similar United States system of automated dissemination of quotations of
securities prices.

              Fundamental Change Expiration Time:  The term "Fundamental Change
Expiration Time" shall have the meaning set forth in Section 3.5(b).

              Global Note:  The term "Global Note" shall have the meaning set
forth in Section 2.5(b).

              Indenture:  The term "Indenture" shall mean this instrument as
originally executed or, if amended or supplemented as herein provided, as so
amended or supplemented.

              Institutional Accredited Investor:  The term "Institutional
Accredited Investor" shall mean an institutional "accredited investor" within
the meaning of Rule 501(a)(1), (2), (3) or (7) under the Securities Act.

              Liquidated Damages Amount:  The term "Liquidated Damages Amount"
shall have the meaning specified in Section 2(c) of the Registration Rights
Agreement.

              Note or Notes:  The term "Note" or "Notes" shall mean any Note or
Notes, as the case may be, authenticated and delivered under this Indenture,
including the Global Note.

              Note register:  The term "Note register" shall have the meaning
specified in Section 2.5(a).

              Noteholder or holder:  The terms "Noteholder" or "holder" as
applied to any Note, or other similar terms (but excluding the term "beneficial
holder"), shall mean any Person in whose name at the time a particular Note is
registered on the Note register.

              Officers' Certificate:  The term "Officers' Certificate," when
used with respect to the Company, shall mean a certificate signed by both (a)
the President, the Chief Executive Officer, the Chief Financial Officer,
Executive or Senior Vice President or any Vice President (whether or not
designated by a number or number or words or words added before or after the
title "Vice President") and (b) the Treasurer or any Assistant Treasurer or the
Secretary or any Assistant Secretary of the Company or two officers listed in
clause (a).  Each Officers' Certificate (other than the certificate provided
pursuant to the Trust Indenture Act Section 314(a)(4)) shall include the
statements provided for in Trust Indenture Act Section 314(e).

              Opinion of Counsel:  The term "Opinion of Counsel" shall mean an
opinion in writing signed by legal counsel, who may be an employee of or
counsel to the Company, that meets

                                       4

<PAGE>   12

the requirements of Section 15.5 hereof.  Each such Opinion of Counsel shall
include the statements provided for in Trust Indenture Act Section 314(e).

              Optional Redemption: The term "Optional Redemption" shall have
the meaning specified in Section 3.1.

              outstanding:  The term "outstanding," when used with reference to
Notes, shall, subject to the provisions of Section 8.4, mean, as of any
particular time, all Notes authenticated and delivered by the Trustee under
this Indenture, except

                    (a) Notes theretofore canceled by the Trustee or delivered
to the Trustee for cancellation;

                    (b) Notes, or portions thereof, (i) for the redemption of
which monies in the necessary amount shall have been deposited in trust with
the Trustee or with any paying agent (other than the Company) or (ii) which
shall have been otherwise discharged in accordance with Article XII;

                    (c) Notes in lieu of which, or in substitution for which,
other Notes shall have been authenticated and delivered pursuant to the terms
of Section 2.6; and

                    (d) Notes converted into Common Stock pursuant to Article
XIV and Notes deemed not outstanding pursuant to Article III.

              Person:  The term "Person" shall mean a corporation, an
association, a partnership, a limited liability company, an individual, a joint
venture, a joint stock company, a trust, or any other entity or organization,
including government or political subdivision or agency or instrumentality
thereof.

              Placement Agents:  The term "Placement Agents" shall mean Morgan
Stanley & Co. Incorporated, Credit Suisse First Boston Corporation, Banc of
America Securities LLC and  Goldman, Sachs & Co.

              Portal Market:  The term "Portal Market" shall mean The Portal
Market operated by the National Association of Securities Dealers, Inc. or any
successor thereto.

              Predecessor Note:  The term "Predecessor Note" of any particular
Note shall mean every previous Note evidencing all or a portion of the same
debt as that evidenced by such particular Note; and, for the purposes of this
definition, any Note authenticated and delivered under Section 2.6 in lieu of a
lost, destroyed or stolen Note shall be deemed to evidence the same debt as the
lost, destroyed or stolen Note that it replaces.

                                       5

<PAGE>   13

              QIB:  The term "QIB" shall mean a "qualified institutional buyer"
as defined in Rule 144A.

              Registration Rights Agreement:  The term "Registration Rights
Agreement" shall mean that certain Registration Rights Agreement, dated as of
June 16, 1999, between the Company and the Placement Agents, and certain
permitted assigns specified therein, as amended from time to time in accordance
with its terms.

              Responsible Officer:  The term "Responsible Officer," when used
with respect to the Trustee, shall mean 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, any assistant 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 in its
Corporate Trust Department customarily performing functions similar to those
performed by any of the above-designated officers and in each case having
direct responsibility for the administration of this Indenture and also means,
with respect to a particular corporate trust matter, any other officer to whom
such matter is referred because of his or her knowledge of and familiarity with
the particular subject.

              Restricted Securities:  The term "Restricted Securities" shall
have the meaning specified in Section 2.5(d).

              Rule 144A:  The term "Rule 144A" shall mean Rule 144A as
promulgated under the Securities Act.

              Securities Act:  The term "Securities Act" shall mean the
Securities Act of 1933, as amended, and the rules and regulations promulgated
thereunder.

              Significant Subsidiary:  The term "Significant Subsidiary" shall
mean, as of any date of determination, a Subsidiary of the Company (i) that
conducts digital mobile business operations or holds assets relating to digital
mobile business operations, in each case primarily in the United States, and
(ii) that either (A) in which the investments in, and advances to, such
Subsidiary by the Company are at least equal to 10% of the total book value of
the assets of the Company and its consolidated Subsidiaries, or (B) has assets
with a book value that is at least equal to 10% of the total book value of the
assets of the Company and its consolidated Subsidiaries (excluding, in each
case, any Subsidiary that would not be classified as a "Significant Subsidiary"
because it does not meet the requirements of clause (i) or (iii) of this
definition), and (iii) that is not classified as an "Unrestricted Subsidiary"
for purposes of any indenture to which the Company is a party or by which the
Company is bound.

              Subsidiary:  The term "Subsidiary" shall mean, with respect to
any Person, any corporation, association or other business entity of which more
than 50% of the voting power of the

                                       6

<PAGE>   14

outstanding capital stock of any class or kind ordinarily having the power to
vote for the election of directors, managers or other voting members of the
governing body of such Person is owned, directly or indirectly, by such Person
and one or more other Subsidiaries of such Person.

              Trading Day:  The term "Trading Day" shall have the meaning
specified in Section 14.5(h)(5).

              Trigger Event:  The term "Trigger Event" shall have the meaning
specified in Section 14.5(d).

              Trust Indenture Act or TIA:  The terms "Trust Indenture Act" or
"TIA" shall mean the Trust Indenture Act of 1939, as amended, as it was in
force at the date of execution of this Indenture, except as provided in
Sections 10.3 and 14.6.

              Trustee:  The term "Trustee" shall mean Harris Trust and Savings
Bank until a successor replaces it in accordance with the provisions of Article
VII of this Indenture and thereafter means such successor.

     The definitions of certain other terms are as specified in Sections 2.5
and 3.5 and Article XIV.


                                   ARTICLE II

       ISSUE, DESCRIPTION, EXECUTION, REGISTRATION AND EXCHANGE OF NOTES

     Section 2.1 Designation Amount and Issue of Notes.  The Notes shall be
designated as "4 3/4% Convertible Senior Notes due 2007." Notes not to exceed
the aggregate principal amount of $500,000,000 (or $600,000,000 if the
over-allotment option set forth in Section 3 of the Purchase Agreement dated
June 10, 1999 between the Company and the Placement Agents is exercised in
full) (except pursuant to Sections 2.5, 2.6, 3.3, 3.5 and 14.2 hereof) upon the
execution of this Indenture, or from time to time thereafter, may be executed
by the Company and delivered to the Trustee for authentication, and the Trustee
shall thereupon authenticate and deliver said Notes to or upon the written
order of the Company, signed by its (a) Chief Executive Officer, President,
Chief Financial Officer, Executive or Senior Vice President or any Vice
President (whether or not designated by a number or numbers or word or words
added before or after the title "Vice President") and (b) Treasurer or
Assistant Treasurer or its Secretary or any Assistant Secretary, or by two
officers listed in clause (a), without any further action by the Company
hereunder.

     Section 2.2 Form of Notes.  The Notes and the Trustee's certificate of
authentication to be borne by such Notes shall be substantially in the form set
forth in Exhibit A, which is incorporated in and made a part of this Indenture.

                                       7

<PAGE>   15

     Any of the Notes may have such letters, numbers or other marks of
identification and such notations, legends and endorsements as the officers
executing the same may approve (execution thereof to be conclusive evidence of
such approval) and as are not inconsistent with the provisions of this
Indenture, or as may be required to comply with any law or with any rule or
regulation made pursuant thereto or with any rule or regulation of any
securities exchange or automated quotation system on which the Notes may be
listed, or to conform to usage.

     Any Note in global form shall represent such of the outstanding Notes as
shall be specified therein and shall provide that it shall represent the
aggregate amount of outstanding Notes from time to time endorsed thereon and
that the aggregate amount of outstanding Notes represented thereby may from
time to time be increased or reduced to reflect transfers or exchanges
permitted hereby.  Any endorsement of a Note in global form to reflect the
amount of any increase or decrease in the amount of outstanding Notes
represented thereby shall be made by the Trustee or the Custodian, at the
direction of the Trustee, in such manner and upon instructions given by the
holder of such Notes in accordance with this Indenture.  Payment of principal
of and interest (including Liquidated Damages Amount, if any) and premium, if
any, on any Note in global form shall be made to the holder of such Note.

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

     Section 2.3 Date and Denomination of Notes; Payments of Interest
(including Liquidated Damages Amount, if any).  The Notes shall be issuable in
registered form without coupons in denominations of $1,000 principal amount and
integral multiples thereof.  Every Note shall be dated the date of its
authentication and shall bear interest from the applicable date in each case as
specified on the face of the form of Note attached as Exhibit A hereto.
Interest on the Notes shall be computed on the basis of a 360-day year
comprised of twelve (12) 30-day months.

     The Person in whose name any Note (or its Predecessor Note) is registered
on the Note register at the close of business on any record date with respect
to any interest payment date shall be entitled to receive the interest
(including Liquidated Damages Amount, if any) payable on such interest payment
date, except (i) that the interest (including Liquidated Damages Amount, if
any) payable upon redemption or repurchase (unless the date of redemption or
repurchase is an interest payment date) will be payable to the Person to whom
principal is payable and (ii) as set forth in the next succeeding sentence.  In
the case of any Note (or portion thereof) which is converted into Common Stock
during the period from (but excluding) a record date to (but excluding) the
next succeeding interest payment date either (i) if such Note (or portion
thereof) has been called for redemption on a redemption date which occurs
during such period, or is to be repurchased in connection with a Fundamental
Change on a Repurchase Date (as defined in Section 3.5) which occurs during
such period, the Company shall not be required to pay interest on such interest
payment date in respect of any such Note (or portion thereof) except to the
extent required to be paid

                                       8

<PAGE>   16

upon redemption of such Note or portion thereof pursuant to Section 3.3 or 3.5
hereof or (ii) if otherwise, any Note (or portion thereof) submitted for
conversion during such period must be accompanied by funds equal to the
interest payable on such succeeding interest payment date on the principal
amount so converted.  Interest (including Liquidated Damages Amount, if any)
shall be payable at the office of the Company maintained by the Company for
such purposes in the Borough of Manhattan, The City of New York, which shall
initially be an office or agency of the Trustee and may, as the Company shall
specify to the paying agent in writing by each record date, be paid either (i)
by check mailed to the address of the Person entitled thereto as it appears in
the Note register (provided that any holder of Notes with an aggregate
principal amount in excess of $10,000,000 shall, at the written election of
such holder, filed on or before the relevant record date with the Trustee, be
paid by wire transfer in immediately available funds) or (ii) by transfer to an
account maintained by such Person located in the United States; provided,
however, that payments to the Depositary will be made by wire transfer of
immediately available funds to the account of the Depositary or its nominee.
The term "record date" with respect to any interest payment date shall mean
December 15 or June 15 preceding the relevant January 1 or July 1,
respectively.

     Any interest (including Liquidated Damages Amount, if any) on any Note
which is payable, but is not punctually paid or duly provided for, on any
January 1 or July 1 (herein called "Defaulted Interest") shall forthwith cease
to be payable to the Noteholder on the relevant record date by virtue of his
having been such Noteholder; and such Defaulted Interest shall be paid by the
Company, at its election in each case, as provided in clause (1) or (2) below:

              (1) The Company may elect to make payment of any Defaulted
Interest to the Persons in whose names the Notes (or their respective
Predecessor Notes) are registered at the close of business on a special record
date 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 to be paid on each Note and the date of the
payment (which shall be not less than twenty-five (25) days after the receipt
by the Trustee of such notice, unless the Trustee shall consent to an earlier
date), and at the same time the Company shall deposit with the Trustee an
amount of money equal to the aggregate amount to be paid in respect of such
Defaulted Interest or shall make arrangements satisfactory to the Trustee for
such deposit prior to the date of the proposed payment, such money when
deposited to be held in trust for the benefit of the Person 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 fifteen (15) days and not less than ten (10) days prior to the
date of the proposed payment, and not less than ten (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 Noteholder at his address as it appears in
the Note register, not less than ten (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 Notes (or their respective

                                       9

<PAGE>   17

Predecessor Notes) were registered at the close of business on such special
record date and shall no longer be payable pursuant to the following clause (2)
of this Section 2.3.

              (2) The Company may make payment of any Defaulted Interest in any
other lawful manner not inconsistent with the requirements of any securities
exchange or automated quotation system on which the Notes may be listed or
designated for issuance, and upon such notice as may be required by such
exchange or automated quotation system, 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.

     Section 2.4 Execution of Notes.  The Notes shall be (a) signed in the name
and on behalf of the Company by the manual or facsimile signature of its  Chief
Executive Officer, President, Chief Financial Officer, any Executive or Senior
Vice President or any Vice President (whether or not designated by a number or
numbers or word or words added before or after the title "Vice President") or
Treasurer and (b) attested by the manual or facsimile signature of  its
Secretary or any of its Assistant Secretaries or its Finance Director,
Treasurer, Controller or any of its Assistant Treasurers or any other officer
listed in clause (a) (which may be printed, engraved or otherwise reproduced
thereon, by facsimile or otherwise).  Only such Notes as shall bear thereon a
certificate of authentication substantially in the form set forth on the form
of Note attached as Exhibit A hereto, manually executed by the Trustee (or an
authenticating agent appointed by the Trustee as provided by Section 15.11),
shall be entitled to the benefits of this Indenture or be valid or obligatory
for any purpose.  Such certificate by the Trustee (or such an authenticating
agent) upon any Note executed by the Company shall be conclusive evidence that
the Note so authenticated has been duly authenticated and delivered hereunder
and that the holder is entitled to the benefits of this Indenture.

     In case any officer of the Company who shall have signed any of the Notes
shall cease to be such officer before the Notes so signed shall have been
authenticated and delivered by the Trustee, or disposed of by the Company, such
Notes nevertheless may be authenticated and delivered or disposed of as though
the person who signed such Notes had not ceased to be such officer of the
Company; and any Note may be signed on behalf of the Company by such persons
as, at the actual date of the execution of such Note, shall be the proper
officers of the Company, although at the date of the execution of this
Indenture any such person was not such an officer.

     Section 2.5 Exchange and Registration of Transfer of Notes; Restrictions
on Transfer; Depositary.

              (a) The Company shall cause to be kept at the Corporate Trust
Office a register (the register maintained in such office and in any other
office or agency of the Company designated pursuant to Section 4.2 being herein
sometimes collectively referred to as the "Note register") in which, subject to
such reasonable regulations as it may prescribe, the Company shall provide for
the registration of Notes and of transfers of Notes. The Note register shall be
in written form or in any form capable of being converted into written form
within a reasonably prompt period of time.  The Trustee is hereby appointed
"Note registrar" for the purpose of registering Notes and transfers of

                                       10

<PAGE>   18

Notes as herein provided.  The Company may appoint one or more co-registrars in
accordance with Section 4.2.

     Upon surrender for registration of transfer of any Note to the Note
registrar or any co-registrar, and satisfaction of the requirements for such
transfer set forth in this Section 2.5, the Company shall execute, and the
Trustee shall authenticate and deliver, in the name of the designated
transferee or transferees, one or more new Notes of any authorized
denominations and of a like aggregate principal amount and bearing such
restrictive legends as may be required by this Indenture.

     Notes may be exchanged for other Notes of any authorized denominations and
of a like aggregate principal amount, upon surrender of the Notes to be
exchanged at any such office or agency maintained by the Company pursuant to
Section 4.2.  Whenever any Notes are so surrendered for exchange, the Company
shall execute, and the Trustee shall authenticate and deliver, the Notes which
the Noteholder making the exchange is entitled to receive bearing registration
numbers not contemporaneously outstanding.

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

     All Notes presented or surrendered for registration of transfer or for
exchange, redemption, repurchase or conversion shall (if so required by the
Company or the Note registrar) be duly endorsed, or be accompanied by a written
instrument or instruments of transfer in form satisfactory to the Company, and
the Notes shall be duly executed by the Noteholder thereof or his attorney duly
authorized in writing.

     No service charge shall be made for any registration of transfer or
exchange of Notes, but the Company may require payment of a sum sufficient to
cover any tax, assessment or other governmental charge that may be imposed in
connection with any registration of transfer or exchange of Notes.

     Neither the Company nor the Trustee nor any Note registrar shall be
required to exchange or register a transfer of (a) any Notes for a period of
fifteen (15) days next preceding any selection of Notes to be redeemed or (b)
any Notes or portions thereof called for redemption pursuant to Section 3.1 or
(c) any Notes or portions thereof surrendered for conversion pursuant to
Article XIV or (d) any Notes or portions thereof tendered for repurchase (and
not withdrawn) pursuant to Section 3.5.

              (b) So long as the Notes are eligible for book-entry settlement
with the Depositary, or unless otherwise required by law, all Notes that, upon
initial issuance are beneficially owned by QIBs or as a result of a sale or
transfer after initial issuance are beneficially owned by QIBs, will be
represented by one or more Notes in global form registered in the name of the

                                       11

<PAGE>   19

Depositary or the nominee of the Depositary (the "Global Note"), except as
otherwise specified below.  The transfer and exchange of beneficial interests
in any such Global Note shall be effected through the Depositary in accordance
with this Indenture and the procedures of the Depositary therefor.  The Trustee
shall make appropriate endorsements to reflect increases or decreases in the
principal amounts of any such Global Note as set forth on the face of the Note
("Principal Amount") to reflect any such transfers.  Except as provided below,
beneficial owners of a Global Note shall not be entitled to have certificates
registered in their names, will not receive or be entitled to receive physical
delivery of certificates in definitive form and will not be considered holders
of such Notes in global form.

              (c) So long as the Notes are eligible for book-entry
settlement, or unless otherwise required by law, upon any transfer of a
definitive Note to a QIB in accordance with Rule 144A, and upon receipt of the
definitive Note or Notes being so transferred, together with a certification,
substantially in the form on the reverse of the Note, from the transferor that
the transfer is being made in compliance with Rule 144A (or other evidence
satisfactory to the Trustee), the Trustee shall make an endorsement on the
Global Note to reflect an increase in the aggregate Principal Amount of the
Notes represented by such Note in global form, and the Trustee shall cancel
such definitive Note or Notes in accordance with the standing instructions and
procedures of the Depositary; provided that no definitive Note, or portion
thereof, in respect of which the Company or an Affiliate of the Company held
any beneficial interest shall be included in such Note in global form until
such definitive Note is freely tradable in accordance with Rule 144(k);
provided further that the Trustee shall issue Notes in definitive form upon any
transfer of a beneficial interest in the Note in global form to the Company or
any Affiliate of the Company.

     Upon any sale or transfer of a Note to an Institutional Accredited
Investor (other than pursuant to a registration statement that has been
declared effective under the Securities Act), such Institutional Accredited
Investor shall, prior to such sale or transfer, furnish to the Company and/or
the Trustee a signed letter containing representations and agreements relating
to restrictions on transfer substantially in the form set forth in Exhibit B to
this Indenture.  Upon any transfer of a beneficial interest in the Global Note
to an Institutional Accredited Investor, the Trustee shall make an endorsement
on the Global Note to reflect a decrease in the aggregate Principal Amount of
the Notes represented by such Note in global form, and the Company shall
execute a definitive Note or Notes in exchange therefor, and the Trustee, upon
receipt of such definitive Note or Notes and the written order of the Company,
shall authenticate and deliver such, definitive Note or Notes.

     Any Note in global form may be endorsed with or have incorporated in the
text thereof such legends or recitals or changes not inconsistent with the
provisions of this Indenture as may be required by the Custodian, the
Depositary or by the National Association of Securities Dealers, Inc. in order
for the Notes to be tradeable on The Portal Market or as may be required for
the Notes to be tradeable on any other market developed for trading of
securities pursuant to Rule 144A or required to comply with any applicable law
or any regulation thereunder or with the rules and regulations of any
securities exchange or automated quotation system upon which the Notes may be

                                       12

<PAGE>   20

listed or traded or to conform with any usage with respect thereto, or to
indicate any special limitations or restrictions to which any particular Notes
are subject.

              (d) Every Note that bears or is required under this Section
2.5(d) to bear the legend set forth in this Section 2.5(d) (together with any
Common Stock issued upon conversion of the Notes and required to bear the
legend set forth in Section 2.5(e), collectively, the "Restricted Securities")
shall be subject to the restrictions on transfer set forth in this Section
2.5(d) (including those set forth in the legend set forth below) unless such
restrictions on transfer shall be waived by written consent of the Company, and
the holder of each such Restricted Security, by such holder's acceptance
thereof, agrees to be bound by all such restrictions on transfer.  As used in
Sections 2.5(d) and 2.5(e), the term "transfer" encompasses any sale, pledge,
transfer or other disposition whatsoever, directly or indirectly, of any
Restricted Security or any interest therein.

     Until the expiration of the holding period applicable to sales thereof
under Rule 144(k) under the Securities Act (or any successor provision), any
certificate evidencing such Note (and all securities issued in exchange
therefor or substitution thereof, other than Common Stock, if any, issued upon
conversion thereof, which shall bear the legend set forth in Section 2.5(e), if
applicable) shall bear a legend in substantially the following form, unless
such Note has been sold pursuant to a registration statement that has been
declared effective under the Securities Act (and which continues to be
effective at the time of such transfer), or unless otherwise agreed by the
Company in writing, with written notice thereof to the Trustee:

     THE NOTE EVIDENCED HEREBY HAS NOT BEEN REGISTERED UNDER THE UNITED STATES
     SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE
     SECURITIES LAWS, AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD WITHIN THE
     UNITED STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF, UNITED STATES
     PERSONS EXCEPT AS SET FORTH IN THE FOLLOWING SENTENCE.  BY ITS ACQUISITION
     HEREOF, THE HOLDER (1) REPRESENTS THAT (A) IT IS A "QUALIFIED
     INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) OR
     (B) IT IS AN INSTITUTIONAL "ACCREDITED INVESTOR" (AS DEFINED IN RULE
     501(A)(1), (2), (3) OR (7) UNDER THE SECURITIES ACT) ("INSTITUTIONAL
     ACCREDITED INVESTOR"); (2) AGREES THAT IT WILL NOT, PRIOR TO EXPIRATION OF
     THE HOLDING PERIOD APPLICABLE TO SALES OF THE NOTE EVIDENCED HEREBY UNDER
     RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION), RESELL
     OR OTHERWISE TRANSFER THE NOTE EVIDENCED HEREBY OR THE COMMON STOCK
     ISSUABLE UPON CONVERSION OF SUCH NOTE EXCEPT (A) TO NEXTEL COMMUNICATIONS,
     INC. OR ANY SUBSIDIARY THEREOF, (B) TO A QUALIFIED INSTITUTIONAL BUYER IN
     COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, (C) TO AN
     INSTITUTIONAL ACCREDITED INVESTOR THAT, PRIOR TO SUCH TRANSFER, FURNISHES
     TO HARRIS

                                       13

<PAGE>   21

     TRUST AND SAVINGS BANK, AS TRUSTEE (OR A SUCCESSOR TRUSTEE), A SIGNED
     LETTER CONTAINING CERTAIN REPRESENTATIONS AND AGREEMENTS RELATING TO THE
     RESTRICTIONS ON TRANSFER OF THE NOTE EVIDENCED HEREBY (THE FORM OF WHICH
     LETTER CAN BE OBTAINED FROM THE TRUSTEE), (D) PURSUANT TO THE EXEMPTION
     FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF
     AVAILABLE) OR (E) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN
     DECLARED EFFECTIVE UNDER THE SECURITIES ACT (AND WHICH CONTINUES TO BE
     EFFECTIVE AT THE TIME OF SUCH TRANSFER); (3) PRIOR TO SUCH TRANSFER (OTHER
     THAN A TRANSFER PURSUANT TO CLAUSE (2)(E) ABOVE), IT WILL FURNISH TO
     HARRIS TRUST SAVINGS BANK, AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS
     APPLICABLE), SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS
     IT MAY REASONABLY REQUIRE TO CONFIRM THAT SUCH TRANSFER IS BEING MADE
     PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO THE
     REGISTRATION REQUIREMENTS OF, THE SECURITIES ACT AND (4) AGREES THAT IT
     WILL DELIVER TO EACH PERSON TO WHOM THE NOTE EVIDENCED HEREBY IS
     TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND.  IN
     CONNECTION WITH ANY TRANSFER OF THE NOTE EVIDENCED HEREBY PRIOR TO THE
     EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THE NOTE EVIDENCED
     HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR
     PROVISION), THE HOLDER MUST CHECK THE APPROPRIATE BOX SET FORTH ON THE
     REVERSE HEREOF RELATING TO THE MANNER OF SUCH TRANSFER AND SUBMIT THIS
     CERTIFICATE TO HARRIS TRUST AND SAVINGS BANK, AS TRUSTEE (OR A SUCCESSOR
     TRUSTEE, AS APPLICABLE).  IF THE PROPOSED TRANSFEREE IS AN INSTITUTIONAL
     ACCREDITED INVESTOR, THE HOLDER MUST, PRIOR TO SUCH TRANSFER, FURNISH TO
     HARRIS TRUST AND SAVINGS BANK, AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS
     APPLICABLE), SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS
     SUCH TRUSTEE MAY REASONABLY REQUIRE TO CONFIRM THAT SUCH TRANSFER IS BEING
     MADE PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO THE
     REGISTRATION REQUIREMENTS OF, THE SECURITIES ACT.  THIS LEGEND WILL BE
     REMOVED UPON THE EARLIER OF THE TRANSFER OF THE NOTE EVIDENCED HEREBY
     PURSUANT TO CLAUSE (2)(E) ABOVE OR UPON ANY TRANSFER OF THE NOTES
     EVIDENCED HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY
     SUCCESSOR PROVISION).  AS USED HEREIN, THE TERMS "UNITED STATES" AND
     "UNITED STATES PERSONS" HAVE THE MEANINGS GIVEN TO THEM BY REGULATION S
     UNDER THE SECURITIES ACT.

                                       14

<PAGE>   22

     Any Note (or security issued in exchange or substitution therefor) as to
which such restrictions on transfer shall have expired in accordance with their
terms or as to conditions for removal of the foregoing legend set forth therein
have been satisfied may, upon surrender of such Note for exchange to the Note
registrar in accordance with the provisions of this Section 2.5, be exchanged
for a new Note or Notes, of like tenor and aggregate principal amount, which
shall not bear the restrictive legend required by this Section 2.5(d).

     Notwithstanding any other provisions of this Indenture (other than the
provisions set forth in the second paragraph of Section 2.5(c) and in this
Section 2.5(d)), a Note in global form may not be transferred as a whole or in
part except by the Depositary to a nominee of the Depositary or by a nominee of
the Depositary to the Depositary or another nominee of the Depositary or by the
Depositary or any such nominee to a successor Depositary or a nominee of such
successor Depositary.

     The Depositary shall be a clearing agency registered under the Exchange
Act.  The Company initially appoints The Depository Trust Company to act as
Depositary with respect to the Notes in global form.  Initially, the Global
Note shall be issued to the Depositary, registered in the name of Cede & Co.,
as the nominee of the Depositary, and deposited with the Custodian for Cede &
Co.

     If at any time the Depositary for a Note in global form notifies the
Company that it is unwilling or unable to continue as Depositary for such Note,
the Company may appoint a successor Depositary with respect to such Note.  If a
successor Depositary is not appointed by the Company within ninety (90) days
after the Company receives such notice, the Company will execute, and the
Trustee, upon receipt of an Officers' Certificate for the authentication and
delivery of Notes, will authenticate and deliver, Notes in certificated form,
in aggregate principal amount equal to the principal amount of such Note in
global form, in exchange for such Note in global form.

     If a Note in certificated form is issued in exchange for any portion of a
Note in global form after the close of business at the office or agency where
such exchange occurs on any record date and before the opening of business at
such office or agency on the next succeeding interest payment date, interest
will not be payable on such interest payment date in respect of such Note, but
will be payable on such interest payment date, subject to the provisions of
Section 2.3, only to the Person to whom interest in respect of such portion of
such Note in global form is payable in accordance with the provisions of this
Indenture.

     Notes in certificated form issued in exchange for all or a part of a Note
in global form pursuant to this Section 2.5 shall be registered in such names
and in such authorized denominations as the Depositary, pursuant to
instructions from its direct or indirect participants or otherwise, shall
instruct the Trustee.  Upon execution and authentication, the Trustee shall
deliver such Notes in certificated form to the Persons in whose names such
Notes in certificated form are so registered.

     At such time as all interests in a Note in global form have been redeemed,
converted, canceled, exchanged for Notes in certificated form, or transferred
to a transferee who receives Notes

                                       15

<PAGE>   23

in certificated form thereof, such Note in global form shall, upon receipt
thereof, be canceled by the Trustee in accordance with standing procedures and
instructions existing between the Depositary and the Custodian.  At any time
prior to such cancellation, if any interest in a global Note is exchanged for
Notes in certificated form, redeemed, converted, repurchased or canceled,
exchanged for Notes in certificated form or transferred to a transferee who
receives Notes in certificated form therefor or any Note in certificated form
is exchanged or transferred for part of a Note in global form, the principal
amount of such Note in global form shall, in accordance with the standing
procedures and instructions existing between the Depositary and the Custodian,
be appropriately reduced or increased, as the case may be, and an endorsement
shall be made on such Note in global form, by the Trustee or the Custodian, at
the direction of the Trustee, to reflect such reduction or increase.

              (e) Until the expiration of the holding period applicable to
sales thereof under Rule 144(k) under the Securities Act (or any successor
provision), any stock certificate representing Common Stock issued upon
conversion of any Note shall bear a legend in substantially the following form,
unless such Common Stock has been sold pursuant to a registration statement
that has been declared effective under the Securities Act (and which continues
to be effective at the time of such transfer) or such Common Stock has been
issued upon conversion of Notes that have been transferred pursuant to a
registration statement that has been declared effective under the Securities
Act, or unless otherwise agreed by the Company in writing with written notice
thereof to the transfer agent:


              THE COMMON STOCK EVIDENCED HEREBY HAS NOT BEEN REGISTERED UNDER
     THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
     ACT"), OR ANY STATE SECURITIES LAWS, AND, ACCORDINGLY, MAY NOT BE OFFERED
     OR SOLD WITHIN THE UNITED STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF,
     UNITED STATES PERSONS EXCEPT AS SET FORTH IN THE FOLLOWING SENTENCE. THE
     HOLDER HEREOF AGREES THAT UNTIL THE EXPIRATION OF THE HOLDING PERIOD
     APPLICABLE TO SALES OF THE SECURITY EVIDENCED HEREBY UNDER RULE 144(K)
     UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION), (1) IT WILL NOT
     RESELL OR OTHERWISE TRANSFER THE COMMON STOCK EVIDENCED HEREBY EXCEPT (A)
     TO NEXTEL COMMUNICATIONS, INC. OR ANY SUBSIDIARY THEREOF, (B) TO A
     "QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A UNDER THE
     SECURITIES ACT) OR TO AN INSTITUTIONAL "ACCREDITED INVESTOR" (AS DEFINED IN
     RULE 501(A)(1), (2), (3) OR (7) UNDER THE SECURITIES ACT) THAT PRIOR TO
     SUCH TRANSFER, FURNISHES TO EQUISERVE LLP, AS TRANSFER AGENT (OR A
     SUCCESSOR TRANSFER AGENT, AS APPLICABLE), A SIGNED LETTER CONTAINING
     CERTAIN REPRESENTATIONS AND AGREEMENTS RELATING TO THE RESTRICTIONS ON
     TRANSFER OF THE COMMON STOCK EVIDENCED HEREBY (THE FORM OF WHICH LETTER CAN
     BE OBTAINED FROM SUCH TRANSFER AGENT OR A SUCCESSOR TRANSFER

                                       16

<PAGE>   24
     AGENT, AS APPLICABLE), (C) PURSUANT TO THE EXEMPTION FROM REGISTRATION
     PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE), OR (D)
     PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED EFFECTIVE
     UNDER THE SECURITIES ACT (AND WHICH CONTINUES TO BE EFFECTIVE AT THE TIME
     OF SUCH TRANSFER); (2) PRIOR TO SUCH TRANSFER (OTHER THAN A TRANSFER
     PURSUANT TO CLAUSE (1)(D) ABOVE), IT WILL FURNISH TO EQUISERVE LLP, AS
     TRANSFER AGENT (OR A SUCCESSOR TRANSFER AGENT, AS APPLICABLE), SUCH
     CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS THE TRANSFER AGENT
     MAY REASONABLY REQUIRE TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT
     TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO THE REGISTRATION
     REQUIREMENTS, OF THE SECURITIES ACT AND (3) IT WILL DELIVER TO EACH PERSON
     TO WHOM THE COMMON STOCK EVIDENCED HEREBY IS TRANSFERRED (OTHER THAN A
     TRANSFER PURSUANT TO CLAUSE 1(D) ABOVE) A NOTICE SUBSTANTIALLY TO THE
     EFFECT OF THIS LEGEND. THIS LEGEND WILL BE REMOVED UPON THE EARLIER OF THE
     TRANSFER OF THE COMMON STOCK EVIDENCED HEREBY PURSUANT TO CLAUSE (1)(D)
     ABOVE OR UPON ANY TRANSFER OF THE COMMON STOCK EVIDENCED HEREBY AFTER THE
     EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THE SECURITY
     EVIDENCED HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY
     SUCCESSOR PROVISION).  AS USED HEREIN, THE TERMS "UNITED STATES" AND
     "UNITED STATES PERSONS" HAVE THE MEANINGS GIVEN TO THEM BY REGULATION S
     UNDER THE SECURITIES ACT.


     Any such Common Stock as to which such restrictions on transfer shall have
expired in accordance with their terms or as to which the conditions for
removal of the foregoing legend set forth therein have been satisfied may, upon
surrender of the certificates representing such shares of Common Stock for
exchange in accordance with the procedures of the transfer agent for the Common
Stock, be exchanged for a new certificate or certificates for a like number of
shares of Common Stock, which shall bear the restrictive legend required by
this Section 2.5(e).

              (f) Any Note or Common Stock issued upon the conversion or
exchange of a Note that, prior to the expiration of the holding period
applicable to sales thereof under Rule 144(k) under the Securities Act (or any
successor provision), is purchased or owned by the Company or any Affiliate
thereof may not be resold by the Company or such Affiliate unless registered
under the Securities Act or resold pursuant to an exemption from the
registration requirements of the Securities Act in a transaction which results
in such Notes or Common Stock, as the case may be, no longer being "restricted
securities" (as defined under Rule 144).

                                       17

<PAGE>   25

     Section 2.6 Mutilated, Destroyed, Lost or Stolen Notes.  In case any Note
shall become mutilated or be destroyed, lost or stolen, the Company in its
discretion may execute, and upon its written request the Trustee or an
authenticating agent appointed by the Trustee shall authenticate and make
available for delivery, a new Note, bearing a number not contemporaneously
outstanding, in exchange and substitution for the mutilated Note, or in lieu of
and in substitution for the Note so destroyed, lost or stolen.  In every case
the applicant for a substituted Note shall furnish to the Company, to the
Trustee and, if applicable, to such authenticating agent such security or
indemnity as may be required by them to save each of them harmless for any
loss, liability, cost or expense caused by or connected with such substitution,
and, in every case of destruction, loss or theft, the applicant shall also
furnish to the Company, to the Trustee and, if applicable, to such
authenticating agent evidence to their satisfaction of the destruction, loss or
theft of such Note and of the ownership thereof.

     Following receipt by the Trustee or such authenticating agent, as the case
may be, of satisfactory security or indemnity and evidence, as described in the
preceding paragraph, the Trustee or such authenticating agent may authenticate
any such substituted Note and make available for delivery such Note.  Upon the
issuance of any substituted Note, 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 connected therewith.  In case any Note
which has matured or is about to mature or has been called for redemption or
has been tendered for repurchase (and not withdrawn) or is about to be
converted into Common Stock shall become mutilated or be destroyed, lost or
stolen, the Company may, instead of issuing a substitute Note, pay or authorize
the payment of or convert or authorize the conversion of the same (without
surrender thereof except in the case of a mutilated Note), as the case may be,
if the applicant for such payment or conversion shall furnish to the Company,
to the Trustee and, if applicable, to such authenticating agent such security
or indemnity as may be required by them to save each of them harmless for any
loss, liability, cost or expense caused by or connected with such substitution,
and, in case of destruction, loss or theft, evidence satisfactory to the
Company, the Trustee and, if applicable, any paying agent or conversion agent
of the destruction, loss or theft of such Note and of the ownership thereof.

     Every substitute Note issued pursuant to the provisions of this Section
2.6 by virtue of the fact that any Note is destroyed, lost or stolen shall
constitute an additional contractual obligation of the Company, whether or not
the destroyed, lost or stolen Note shall be found at any time, and shall be
entitled to all the benefits of (but shall be subject to all the limitations
set forth in) this Indenture equally and proportionately with any and all other
Notes duly issued hereunder. To the extent permitted by law, all Notes shall be
held and owned upon the express condition that the foregoing provisions are
exclusive with respect to the replacement or payment or conversion of
mutilated, destroyed, lost or stolen Notes and shall preclude any and all other
rights or remedies notwithstanding any law or statute existing or hereafter
enacted to the contrary with respect to the replacement or payment or
conversion of negotiable instruments or other securities without their
surrender.

                                       18

<PAGE>   26

     Section 2.7 Temporary Notes.  Pending the preparation of Notes in
certificated form, the Company may execute and the Trustee or an authenticating
agent appointed by the Trustee shall, upon the written request of the Company,
authenticate and deliver temporary Notes (printed or lithographed).  Temporary
Notes shall be issuable in any authorized denomination, and substantially in
the form of the Notes in certificated form, but with such omissions, insertions
and variations as may be appropriate for temporary Notes, all as may be
determined by the Company.  Every such temporary Note shall be executed by the
Company and authenticated by the Trustee or such authenticating agent upon the
same conditions and in substantially the same manner, and with the same effect,
as the Notes in certificated form.  Without unreasonable delay the Company will
execute and deliver to the Trustee or such authenticating agent Notes in
certificated form (other than in the case of Notes in global form) and
thereupon any or all temporary Notes (other than any such Note in global form)
may be surrendered in exchange therefor, at each office or agency maintained by
the Company pursuant to Section 4.2 and the Trustee or such authenticating
agent shall authenticate and make available for delivery in exchange for such
temporary Notes an equal aggregate principal amount of Notes in certificated
form.  Such exchange shall be made by the Company at its own expense and
without any charge therefor.  Until so exchanged, the temporary Notes shall in
all respects be entitled to the same benefits and subject to the same
limitations under this Indenture as Notes in certificated form authenticated
and delivered hereunder.

     Section 2.8 Cancellation of Notes Paid, Etc.  All Notes surrendered for
the purpose of payment, redemption, repurchase, conversion, exchange or
registration of transfer shall, if surrendered to the Company or any paying
agent or any Note registrar or any conversion agent, be surrendered to the
Trustee and promptly canceled by it, or, if surrendered to the Trustee, shall
be promptly canceled by it, and no Notes shall be issued in lieu thereof except
as expressly permitted by any of the provisions of this Indenture. The Trustee
shall dispose of such canceled Notes in accordance with its customary
procedures.  If the Company shall acquire any of the Notes, such acquisition
shall not operate as a redemption or satisfaction of the indebtedness
represented by such Notes unless and until the same are delivered to the
Trustee for cancellation.

     Section 2.9 CUSIP Numbers.  The Company in issuing the Notes may use
"CUSIP" numbers (if then generally in use), and, if so, the Trustee shall use
"CUSIP" numbers in notices of redemption as a convenience to Noteholders;
provided that any such notice may state that no representation is made as to
the correctness of such numbers either as printed on the Notes or as contained
in any notice of a redemption and that reliance may be placed only on the other
identification numbers printed on the Notes, and any such redemption shall not
be affected by any defect in or omission of such numbers. The Company will
promptly notify the Trustee of any change in the "CUSIP" numbers.

                                       19

<PAGE>   27

                                  ARTICLE III

                       REDEMPTION OR REPURCHASE OF NOTES

     Section 3.1 Redemption by the Company.  At any time on or after July 6,
2002, and prior to maturity, the Notes may be redeemed at the option of the
Company (an "Optional Redemption"), in whole or  in part, upon notice as set
forth in Section 3.2, at the following optional redemption prices (expressed as
percentages of the principal amount), together in each case with accrued and
unpaid interest, if any (including Liquidated Damages Amount, if any), to, but
excluding, the date fixed for redemption.

     If redeemed during the period beginning July 6, 2002 and ending on June
30, 2003, at a redemption price of 102.714% and if redeemed during the 12-month
period beginning July 1:

<TABLE>
<CAPTION>
                        Year                     Redemption Price
                        ----                     ----------------
                        <S>                      <C>
                        2003                         102.036%
                        2004                         101.357%
                        2005                         100.679%
</TABLE>

and 100% if at or after July 1, 2006; provided that if the date fixed for
redemption is after an interest payment record date and on or before January 1
or July 1, then the interest payable on such date shall be paid to the holder
of record on the preceding December 15 or June 15, respectively.

     Section 3.2 Notice of Redemption; Selection of Notes for Redemption.  In
case the Company shall desire to exercise the right to redeem all or, as the
case may be, any part of the Notes pursuant to Section 3.1, it shall fix a date
for redemption and it or, at its written request received by the Trustee not
fewer than forty-five (45) days prior (or such shorter period of time as may be
acceptable to the Trustee) to the date fixed for redemption, the Trustee in the
name of and at the expense of the Company, shall publish in certain newspapers
a notice pursuant to Section 15.3 and mail or cause to be mailed a notice of
such redemption not fewer than thirty (30) days prior to the date fixed for
redemption to the holders of Notes so to be redeemed as a whole or in part, at
their last addresses as the same appear on the Note register and shall also
give notice of any such redemption by a release made to Reuters Economic
Services and Bloomberg Business News within the same time period; provided that
if the Company shall give such notice, it shall also give written notice, and
written notice of the Notes to be redeemed to the Trustee.  The Company may not
give notice of any redemption of any of the Notes if a default in payment of
interest or premium on the Notes or any other Event of Default has occurred and
is continuing.  Such mailing shall be by first class mail and by publication in
certain newspapers pursuant to Section 15.3.  The notice if mailed in the
manner herein provided shall be conclusively presumed to have been duly given,
whether or not the holder receives such notice.  In any case, failure to give
such notice by mail or any defect in the notice to the holder of any Note
designated for redemption as a whole or in part shall not affect the validity
of the proceedings for the redemption of any other Note.

     Each notice of redemption shall specify the aggregate principal amount of
Notes to be redeemed, the CUSIP number or numbers of the Notes being redeemed,
the date fixed for

                                       20

<PAGE>   28

redemption (which shall be a Business Day), the redemption price at which Notes
are to be redeemed, the place or places of payment, that payment will be made
upon presentation and surrender of such Notes, that interest accrued to the
date fixed for redemption will be paid as specified in said notice, and that on
and after said date interest thereon or on the portion thereof to be redeemed
will cease to accrue.  Such notice shall also state the current Conversion
Price and the date on which the right to convert such Notes or portions thereof
into Common Stock will expire.  If fewer than all the Notes are to be redeemed,
the notice of redemption shall identify the Notes to be redeemed (including
CUSIP numbers, if any).  In case any Note is to be redeemed in part only, the
notice of redemption shall state the portion of the principal amount thereof to
be redeemed and shall state that, on and after the date fixed for redemption,
upon surrender of such Note, a new Note or Notes in principal amount equal to
the unredeemed portion thereof will be issued.

     On or prior to the redemption date specified in the notice of redemption
given as provided in this Section 3.2, the Company will deposit with the
Trustee or with one or more paying agents (or, if the Company is acting as its
own paying agent, set aside, segregate and hold in trust as provided in Section
4.4) an amount of money in immediately available funds sufficient to redeem on
the redemption date all the Notes (or portions thereof) so called for
redemption (other than those theretofore surrendered for conversion into Common
Stock) at the appropriate redemption price, together with accrued interest to,
but excluding, the date fixed for redemption; provided that if such payment is
made on the redemption date it must be received by the Trustee or paying agent,
as the case may be, by 10:00 a.m. New York City time on such date.  If any Note
called for redemption is converted pursuant hereto prior to such redemption,
any money deposited with the Trustee or any paying agent or so segregated and
held in trust for the redemption of such Note shall be paid to the Company upon
its written request, or, if then held by the Company, shall be discharged from
such trust.

      Whenever any Notes are to be redeemed, the Company will give the Trustee
written notice in the form of an Officers' Certificate not fewer than
forty-five (45) days (or such shorter period of time as may be acceptable to
the Trustee) prior to the redemption date as to the aggregate principal amount
of Notes to be redeemed.

     If fewer than all the Notes are to be redeemed, the Trustee shall select
the Notes or portions thereof of the Global Note or the Notes in certificated
form to be redeemed (in principal amounts of $1,000 or integral multiples
thereof), by lot or by another method the Trustee deems fair and appropriate.

     Upon any redemption of fewer than all Notes, the Company and the Trustee
may (but need not), solely for purposes of determining the pro rata allocation
among such Notes as are unconverted and outstanding at the time of redemption,
treat as outstanding any Notes surrendered for conversion during the period of
fifteen (15) days next preceding the mailing of a notice of redemption and may
(but need not) treat as outstanding any Note authenticated and delivered during
such period in exchange for the unconverted portion of any Note converted in
part during such period.

                                       21

<PAGE>   29

     Section 3.3 Payment of Notes Called for Redemption.  If notice of
redemption has been given as above provided, the Notes or portion of Notes with
respect to which such notice has been given shall, unless converted into Common
Stock pursuant to the terms hereof, become due and payable on the date fixed
for redemption and at the place or places stated in such notice at the
applicable redemption price, together with interest accrued to (but excluding)
the date fixed for redemption, and on and after said date (unless the Company
shall default in the payment of such Notes at the redemption price, together
with interest accrued to said date) interest on the Notes or portion of Notes
so called for redemption shall cease to accrue and such Notes shall cease after
the close of business on the Business Day next preceding the date fixed for
redemption to be convertible into Common Stock and, except as provided in
Sections 7.11 and 12.4, to be entitled to any benefit or security under this
Indenture, and the holders thereof shall have no right in respect of such Notes
except the right to receive the redemption price thereof and unpaid interest to
(but excluding) the date fixed for redemption.  On presentation and surrender
of such Notes at a place of payment in said notice specified, the said Notes or
the specified portions thereof shall be paid and redeemed by the Company at the
applicable redemption price, together with interest accrued thereon to (but
excluding) the date fixed for redemption; provided that, if the applicable
redemption date is an interest payment date, the semi-annual payment of
interest becoming due on such date shall be payable to the holders of such
Notes registered as such on the relevant record date instead of the holders
surrendering such Notes for redemption on such date.

     Upon presentation of any Note redeemed in part only, the Company shall
execute and the Trustee shall authenticate and make available for delivery to
the holder thereof, at the expense of the Company, a new Note or Notes, of
authorized denominations, in principal amount equal to the unredeemed portion
of the Notes so presented.

     Notwithstanding the foregoing, the Trustee shall not redeem any Notes or
mail any notice of redemption during the continuance of a default in payment of
interest or premium on the Notes or if any other Event of Default has occurred
and is continuing.  If any Note called for redemption shall not be so paid upon
surrender thereof for redemption, the principal and premium, if any, shall,
until paid or duly provided for, bear interest from the date fixed for
redemption at the rate borne by the Note and such Note shall remain convertible
into Common Stock until the principal and premium, if any, shall have been paid
or duly provided for.

     Section 3.4 Conversion Arrangement on Call for Redemption.  In connection
with any redemption of Notes, the Company may arrange for the purchase and
conversion of any Notes by an agreement with one or more investment bankers or
other purchasers to purchase such Notes by paying to the Trustee in trust for
the Noteholders, on or before the date fixed for redemption, an amount not less
than the applicable redemption price, together with interest accrued to (but
excluding) the date fixed for redemption, of such Notes.  Notwithstanding
anything to the contrary contained in this Article III, the obligation of the
Company to pay the redemption price of such Notes, together with interest
accrued to (but excluding) the date fixed for redemption shall be deemed to be
satisfied and discharged to the extent such amount is so paid by such
purchasers.  If such an agreement is entered into, a copy of which will be
filed with the Trustee prior to the date

                                       22

<PAGE>   30

fixed for redemption, any Notes not duly surrendered for conversion by the
holders thereof may, at the option of the Company, be deemed, to the fullest
extent permitted by law, acquired by such purchasers from such holders and
(notwithstanding anything to the contrary contained in Article XIV) surrendered
by such purchasers for conversion, all as of immediately prior to the close of
business on the date fixed for redemption (and the right to convert any such
Notes shall be extended through such time), subject to payment of the above
amount as aforesaid.  At the direction of the Company, the Trustee shall hold
and dispose of any such amount paid to it in the same manner as it would monies
deposited with it by the Company for the redemption of Notes.  Without the
Trustee's prior written consent, no arrangement between the Company and such
purchasers for the purchase and conversion of any Notes shall increase or
otherwise affect any of the powers, duties, responsibilities or obligations of
the Trustee as set forth in this Indenture.


     Section 3.5 Repurchase at Option of Holders.

              (a) If there shall occur a Fundamental Change at any time prior
to maturity, conversion or redemption of the Notes, then each Noteholder shall
have the right, at such holder's option, to require the Company to repurchase
all of such holder's Notes, or any portion thereof that is an integral multiple
of $1,000 principal amount, on the date (the "Repurchase Date") that is thirty
(30) days after the date of the Company Notice (as defined in Section 3.5(b)
below) of such Fundamental Change (or, if such 30th day is not a Business Day,
the immediately preceding Business Day) at a repurchase price equal to 100% of
the principal amount thereof, together with accrued interest to (but excluding)
the Repurchase Date; provided that, if such Repurchase Date is after December
15 or June 15 and on or before January 1 or July 1, then the interest payable
on the Repurchase Date shall be paid to the holders of record of the Notes on
the next preceding December 15 or June 15, respectively.

     Upon presentation of any Note redeemed in part only, the Company shall
execute and, upon the Company's written direction to the Trustee, the Trustee
shall authenticate and deliver to the holder thereof, at the expense of the
Company, a new Note or Notes, of authorized denominations, in principal amount
equal to the unredeemed portion of the Notes so presented.

              (b) On or before the tenth day after the occurrence of a
Fundamental Change, the Company or, at its written request (which must be
received by the Trustee at least five (5) Business Days prior to the date the
Trustee is requested to give notice as described below, unless the Trustee
shall agree in writing to a shorter period), the Trustee in the name of and at
the expense of the Company, shall mail or cause to be mailed to all holders of
record on the date of the Fundamental Change a notice (the "Company Notice") of
the occurrence of such Fundamental Change and of the repurchase right at the
option of the holders arising as a result thereof.  Such notice shall be mailed
in the manner and with the effect set forth in the first paragraph of Section
3.2 (without regard for the time limits set forth therein), shall be published
pursuant to Section 15.3 and shall be given by a release made to Reuters
Economic Services and Bloomberg Business News within the same time period.  If
the Company shall give such notice, the Company shall also deliver a copy of
the Company Notice to the Trustee at such time as it is mailed to Noteholders.

                                       23

<PAGE>   31

     Each Company Notice shall specify the circumstances constituting the
Fundamental Change, the Repurchase Date, the price at which the Company shall
be obligated to repurchase Notes, the latest time (not less than thirty (30)
days after the date of the Company's notice of a Fundamental Change) on the
Repurchase Date by which the holder must exercise the repurchase right (the
"Fundamental Change Expiration Time"), that the holder shall have the right to
withdraw any Notes surrendered prior to the Fundamental Change Expiration Time,
a description of the procedure which a Noteholder must follow to exercise such
repurchase right and to withdraw any surrendered Notes, the place or places
where the holder is to surrender such holder's Notes, and the amount of
interest accrued on each Note to the Repurchase Date.

     No failure of the Company to give the foregoing notices and no defect
therein shall limit the Noteholders' repurchase rights or affect the validity
of the proceedings for the repurchase of the Notes pursuant to this Section
3.5.

         (c) For a Note to be so repaid at the option of the holder, the
Company must receive at the office or agency of the Company maintained for that
purpose or, at the option of such holder, the Corporate Trust Office, such Note
with the form entitled "Option to Elect Repayment Upon A Fundamental Change" on
the reverse thereof duly completed, together with such Notes duly endorsed for
transfer, on or before the Fundamental Change Expiration Time.  All questions
as to the validity, eligibility (including time of receipt) and acceptance of
any Note for repayment shall be determined by the Company, whose determination
shall be final and binding absent manifest error.

         (d) Not later than the Business Day following the Repurchase Date, the
Company will deposit with the Trustee or with one or more paying agents (or, if
the Company is acting as its own paying agent, set aside, segregate and hold in
trust as provided in Section 4.4) an amount of money sufficient to repay on the
Repurchase Date all the Notes to be repaid on such date at the appropriate
repurchase price, together with accrued interest to (but excluding) the
Repurchase Date; provided that if such payment is made on the Repurchase Date
it must be received by the Trustee or paying agent, as the case may be, by
10:00 a.m. New York City time, on such date.  Payment for Notes surrendered for
repurchase (and not withdrawn) prior to the Fundamental Change Expiration Time
will be made promptly (but in no event more than five (5) Business Days)
following the Repurchase Date by mailing checks for the amount payable to the
holders of such Notes entitled thereto as they shall appear on the Note
register.

         (e) In the case of a reclassification, change, consolidation, merger,
combination, sale or conveyance to which Section 14.6 applies, but which does
not constitute a Fundamental Change, then the Person formed by such
consolidation or resulting from such merger or which acquires such assets, as
the case may be, shall execute and deliver to the Trustee a supplemental
indenture (accompanied by an Opinion of Counsel stating that, in addition to
the requirements of Section 15.5, such supplemental indenture complies with the
Trust Indenture Act as in force at the date of execution of such supplemental
indenture) modifying the provisions of this Indenture relating

                                       24
<PAGE>   32

to the right of holders of the Notes to cause the Company to repurchase the
Notes following a Fundamental Change, including without limitation the
applicable provisions of this Section 3.5 and the definitions of  Common Stock
and Fundamental Change, as appropriate, as determined in good faith by the
Company (which determination shall be conclusive and binding), to make such
provisions apply to the common stock and the issuer thereof if different from
the Company and Common Stock of the Company (in lieu of the Company and the
Common Stock of the Company).

              (f) The Company will comply with the provisions of Rule 13e-4 and
any other tender offer rules under the Exchange Act to the extent then
applicable in connection with the repurchase rights of the holders of Notes in
the event of a Fundamental Change.

              (g) Notwithstanding any provision of this Section 3.5 the
contrary, the Company may omit to comply with its obligation to repurchase any
Notes upon the occurrence of a Fundamental Change if, prior to the occurrence of
such Fundamental Change, the holders of at least a majority in aggregate
principal amount of the Notes at the time outstanding shall have waived such
compliance, but no such waiver shall end to or affect the Company's obligations
as set forth in Section 3.5 of this Indenture except to the extent so expressly
waived, and, until such waiver shall become effective, the obligations of the
Company and the duties of the Trustee in respect of Section 3.5 of this
Indenture shall remain in full force and effect with respect to any subsequent
or different Fundamental Change.


                                   ARTICLE IV

                      PARTICULAR COVENANTS OF THE COMPANY

     Section 4.1 Payment of Principal, Premium and Interest.  The Company
covenants and agrees that will duly and punctually pay or cause to be paid the
principal of and premium, if any, and interest (including Liquidated Damages
Amount, if any), on each of the Notes at the places, at the respective times and
in the manner provided herein and in the Notes.

     Section 4.2 Maintenance of Office or Agency.  The Company will maintain an
office or agency in the Borough of Manhattan, The City of New York, where the
Notes may be surrendered for registration of transfer or exchange or for
presentation for payment or for conversion, redemption or repurchase and where
notices and demands to or upon the Company in respect of the Notes 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 not designated or appointed by the Trustee. 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 or an affiliate thereof in the Borough of Manhattan, The City of New
York.

                                       25

<PAGE>   33

     The Company may also from time to time designate co-registrars and one or
more offices or agencies where the Notes may be presented or surrendered for
any or all such purposes and may from time to time rescind such designations.
The Company will give prompt written notice of any such designation or
rescission and of any change in the location of any such other office or
agency.

     The Company hereby initially designates the Trustee as paying agent, Note
registrar, Custodian and conversion agent and the Corporate Trust Office of the
Trustee or an affiliate thereof in the Borough of Manhattan, The City of New
York as the office or agency of the Company for each of the aforesaid purposes.

     So long as the Trustee is the Note registrar, the Trustee agrees to mail,
or cause to be mailed, the notices set forth in Section 7.8. If co-registrars
have been appointed in accordance with this Section, the Trustee shall mail
such notices only to the Company and the holders of Notes it can identify from
its records.

     Section 4.3 Appointments to Fill Vacancies in Trustee's Office. The
Company, whenever necessary to avoid or fill a vacancy in the office of
Trustee, will appoint, in the manner provided in Section 7.8, a Trustee, so
that there shall at all times be a Trustee hereunder.

     Section 4.4 Provisions as to Paying Agent.


              (a) If the Company shall appoint a paying agent other than the
Trustee, or if the Trustee shall appoint such a paying agent, the Company will
cause such paying agent to execute and deliver to the Trustee an instrument in
which such agent shall agree with the Trustee, subject to the provisions of
this Section 4.4:


                    (1) that it will hold all sums held by it as such agent for
the payment of the principal of and premium, if any, or interest on the Notes
(whether such sums have been paid to it by the Company or by any other obligor
on the Notes) in trust for the benefit of the holders of the Notes;


                    (2) that it will give the Trustee notice of any failure by
the Company (or by any other obligor on the Notes) to make any payment of the
principal of and premium, if any, or interest on the Notes when the same shall
be due and payable; and


                    (3) that at any time during the continuance of an Event of
Default, upon request of the Trustee, it will forthwith pay to the Trustee all
sums so held in trust.

     The Company shall, on or before each due date of the principal of,
premium, if any, or interest on the Notes, deposit with the paying agent a sum
sufficient to pay such principal, premium, if any, or interest, and (unless
such paying agent is the Trustee) the Company will promptly notify the Trustee
of any failure to take such action; provided that if such deposit is made on
the due date, such deposit shall be received by the paying agent by 10:00 a.m.
New York City time, on such date.

                                       26

<PAGE>   34

              (b) If the Company shall act as its own paying agent, it will, on
or before each due date of the principal of, premium, if any, or interest
(including Liquidated Damages Amount, if any) on the Notes, set aside,
segregate and hold in trust for the benefit of the holders of the Notes a sum
sufficient to pay such principal, premium, if any, or interest (including
Liquidated Damages Amount, if any) so becoming due and will promptly notify the
Trustee of any failure to take such action and of any failure by the Company
(or any other obligor under the Notes) to make any payment of the principal of,
premium, if any, or interest (including Liquidated Damages Amount, if any) on
the Notes when the same shall become due and payable.

              (c) Anything in this Section 4.4 to the contrary notwithstanding,
the Company may, at any time, for the purpose of obtaining a satisfaction and
discharge of this Indenture, or for any other reason, pay or cause to be paid
to the Trustee all sums held in trust by the Company or any paying agent
hereunder as required by this Section 4.4, such sums to be held by the Trustee
upon the trusts herein contained and upon such payment by the Company or any
paying agent to the Trustee, the Company or such paying agent shall be released
from all further liability with respect to such sums.

              (d) Anything is this Section 4.4 to the contrary notwithstanding,
the agreement to hold sums in trust as provided in this Section 4.4 is subject
to Sections 12.3 and 12.4.

     The Trustee shall not be responsible for the actions of any other paying
agents (including the Company if acting as its own paying agent) and shall have
no control of any funds held by such other paying agents.

     Section 4.5 Existence.  Subject to Article XI, the Company will do or
cause to be done all things necessary to preserve and keep in full force and
effect its existence and rights (charter and statutory); provided, however,
that the Company shall not be required to preserve any such right if the
Company 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 4.6 Maintenance of Properties.  The Company will cause all
properties used or useful in the conduct of its business or the business of any
Significant 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 thereof, all as in the judgment of the Company may be necessary so
that the business carried on in connection therewith may be properly and
advantageously conducted at all times; provided, however, that nothing in this
Section shall prevent the Company from discontinuing the operation or
maintenance of any of such properties if such discontinuance is, in the
judgment of the Company, desirable in the conduct of its business or the
business of any Significant Subsidiary and not disadvantageous in any material
respect to the holders.

                                       27

<PAGE>   35

     Section 4.7 Payment of Taxes and Other Claims.  The Company will pay or
discharge, or cause to be paid or discharged, before the same may become
delinquent, (i) all taxes, assessments and governmental charges levied or
imposed upon the Company or any Significant Subsidiary or upon the income,
profits or property of the Company or any Significant Subsidiary, (ii) all
claims for labor, materials and supplies which, if unpaid, might by law become
a lien or charge upon the property of the Company or any Significant Subsidiary
and (iii) all stamps and other duties, if any, which may be imposed by the
United States or any political subdivision thereof or therein in connection
with the issuance, transfer, exchange or conversion of any Notes or with
respect to this Indenture; provided, however, that, in the case of clauses (i)
and (ii), the Company shall not be required to pay or discharge or cause to be
paid or discharged any such tax, assessment, charge or claim (A) if the failure
to do so will not, in the aggregate, have a material adverse impact on the
Company, or (B) if the amount, applicability or validity is being contested in
good faith by appropriate proceedings.

     Section 4.8 Rule 144A Information Requirement.  Within the period prior to
the expiration of the holding period applicable to sales thereof under Rule
144(k) under the Securities Act (or any successor provision), the Company
covenants and agrees that it shall, during any period in which it is not
subject to Section 13 or 15(d) under the Exchange Act, make available to any
holder or beneficial holder of Notes or any Common Stock issued upon conversion
thereof which continue to be Restricted Securities in connection with any sale
thereof and any prospective purchaser of Notes or such Common Stock from such
holder or beneficial holder, the information required pursuant to Rule
144A(d)(4) under the Securities Act upon the request of any holder or
beneficial holder of the Notes or such Common Stock and it will take such
further action as any holder or beneficial holder of such Notes or such Common
Stock may reasonably request, all to the extent required from time to time to
enable such holder or beneficial holder to sell its Notes or Common Stock
without registration under the Securities Act within the limitation of the
exemption provided by Rule 144A, as such Rule may be amended from time to time.
Upon the request of any holder or any beneficial holder of the Notes or such
Common Stock, the Company will deliver to such holder a written statement as to
whether it has complied with such requirements.

     Section 4.9 Stay, Extension and Usury Laws.  The Company covenants (to the
extent that it may lawfully do so) that it shall not at any time insist upon,
plead, or in any manner whatsoever claim or take the benefit or advantage of,
any stay, extension or usury law or other law which would prohibit or forgive
the Company from paying all or any portion of the principal of, premium, if
any, or interest (including Liquidated Damages Amount, if any) on the Notes as
contemplated herein, wherever enacted, now or at any time hereafter in force,
or which may affect the covenants or the performance of this Indenture and the
Company (to the extent it may lawfully do so) hereby expressly waives all
benefit or advantage of any such law, and covenants that it will not, by resort
to any such law, 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.

                                       28

<PAGE>   36

     Section 4.10 Compliance Certificate.  The Company shall deliver to the
Trustee, within one hundred twenty (120) days after the end of each fiscal year
of the Company, a certificate signed by either the principal executive officer,
principal financial officer or principal accounting officer of the Company,
stating whether or not to the best knowledge of the signer thereof the Company
is in default in the performance and observance of any of the terms, provisions
and conditions of this Indenture (without regard to any period of grace or
requirement of notice provided hereunder) and, if the Company shall be in
default, specifying all such defaults and the nature and the status thereof of
which the signer may have knowledge.

     The Company will deliver to the Trustee, forthwith (and in any event
within five Business Days) upon becoming aware of any default in the
performance or observance of any covenant, agreement or condition contained in
this Indenture, any event which, with notice or the lapse of time or both,
would constitute an Event of Default or any Event of Default, an Officers'
Certificate specifying with particularity such default or Event of Default and
further stating what action the Company has taken, is taking or proposes to
take with respect thereto.

     Any notice required to be given under this Section 4.10 shall be delivered
to a Responsible Officer of the Trustee at its Corporate Trust Office.


                                   ARTICLE V

          NOTEHOLDERS' LISTS AND REPORTS BY THE COMPANY AND THE TRUSTEE

     Section 5.1 Noteholders' Lists.  The Company covenants and agrees that it
will furnish or cause to be furnished to the Trustee, semiannually, not more
than fifteen (15) days after each December 15 and June 15 in each year
beginning with December 15, 1999, and at such other times as the Trustee may
request in writing, within thirty (30) days after receipt by the Company of any
such request (or such lesser time as the Trustee may reasonably request in
order to enable it to timely provide any notice to be provided by it
hereunder), a list in such form as the Trustee may reasonably require of the
names and addresses of the holders of Notes as of a date not more than fifteen
(15) days (or such other date as the Trustee may reasonably request in order to
so provide any such notices) prior to the time such information is furnished,
except that no such list need be furnished by the Company to the Trustee so
long as the Trustee is acting as the sole Note registrar.

     Section 5.2 Preservation and Disclosure of Lists.

              (a) The Trustee shall preserve, in as current a form as is
reasonably practicable, all information as to the names and addresses of the
holders of Notes contained in the most recent list furnished to it as provided
in Section 5.1 or maintained by the Trustee in its capacity as Note registrar
or co-registrar in respect of the Notes, if so acting.  The Trustee may destroy
any list furnished to it as provided in Section 5.1 upon receipt of a new list
so furnished.

                                       29

<PAGE>   37

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

              (c) Every Noteholder, 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
disclosure of information as to names and addresses of holders of Notes made
pursuant to the Trust Indenture Act.

     Section 5.3 Reports by Trustee.

              (a) Within sixty (60) days after June 15 of each year commencing
with the year 2000, the Trustee shall transmit to holders of Notes such reports
dated as of June 15 of the year in which such reports are made concerning the
Trustee and its actions under this Indenture as may be required pursuant to the
Trust Indenture Act at the times and in the manner provided pursuant thereto.

              (b) A copy of such report shall, at the time of such transmission
to holders of Notes, be filed by the Trustee with each stock exchange and
automated quotation system upon which the Notes are listed and with the
Company.  The Company will promptly notify the Trustee in writing when the
Notes are listed on any stock exchange or automated quotation system or
delisted therefrom.

     Section 5.4 Reports by Company.  The Company shall file with the Trustee
(and the Commission if at any time after the Indenture becomes qualified under
the Trust Indenture Act), and transmit to holders of Notes, 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, whether or not the Notes are governed by such Act;
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 shall
be filed with the Trustee within fifteen (15) days after the same is so
required to be filed with the Commission.  Delivery of such reports,
information and documents to the Trustee is for informational purposes only and
the Trustee's receipt of such shall not constitute constructive notice of any
information contained therein or determinable from information contained
therein, including the Company's compliance with any of its covenants hereunder
(as to which the Trustee is entitled to rely exclusively on Officers'
Certificates).

                                       30

<PAGE>   38

                                   ARTICLE VI

                    REMEDIES OF THE TRUSTEE AND NOTEHOLDERS
                             ON AN EVENT OF DEFAULT

     Section 6.1 Events of Default.  In case one or more of the following
Events of Default (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) shall have occurred and
be continuing:

              (a) default in the payment of any installment of interest
(including Liquidated Damages Amount, if any) upon any of the Notes as and when
the same shall become due and payable, and continuance of such default for a
period of thirty (30) days; or

              (b) default in the payment of the principal of or premium, if
any, on any of the Notes as and when the same shall become due and payable
either at maturity or in connection with any redemption or repurchase pursuant
to Article III, by acceleration or otherwise; or

              (c) failure on the part of the Company duly to observe or perform
any other of the covenants or agreements on the part of the Company in the
Notes or in this Indenture (other than a covenant or agreement a default in
whose performance or whose breach is elsewhere in this Section 6.1 specifically
dealt with) continued for a period of sixty (60) days after the date on which
written notice of such failure, requiring the Company to remedy the same, shall
have been given to the Company by the Trustee, or the Company and a Responsible
Officer of the Trustee by the holders of at least twenty-five percent (25%) in
aggregate principal amount of the Notes at the time outstanding determined in
accordance with Section 8.4; or

              (d) the Company or any Significant Subsidiary shall commence a
voluntary case or other proceeding seeking liquidation, reorganization or other
relief with respect to itself or any Significant Subsidiary or its or such
Significant Subsidiary's debts under any bankruptcy, insolvency or other
similar law now or hereafter in effect or seeking the appointment of a trustee,
receiver, liquidator, custodian or other similar official of it or any
Significant Subsidiary or any substantial part of the property of the Company
or any Significant Subsidiary, or shall consent to any such relief or to the
appointment of or taking possession by any such official in an involuntary case
or other proceeding commenced against it or any Significant Subsidiary, or
shall make a general assignment for the benefit of creditors, or shall fail
generally to pay its debts as they become due; or

              (e) an involuntary case or other proceeding shall be commenced
against the Company or any Significant Subsidiary seeking liquidation,
reorganization or other relief with respect to it or any Significant Subsidiary
or its or such Significant Subsidiary's debts under any bankruptcy, insolvency
or other similar law now or hereafter in effect or seeking the appointment of a
trustee, receiver, liquidator, custodian or other similar official of it or any
Significant Subsidiary or any substantial part of the property of the Company
or any Significant Subsidiary, and such involuntary case or other proceeding
shall remain undismissed and unstayed for a period of ninety (90) consecutive
days;

                                       31

<PAGE>   39

then, and in each and every such case (other than an Event of Default specified
in Section 6.1(d) or (e) with respect to the Company), unless the principal of
all of the Notes shall have already become due and payable, either the Trustee
or the holders of not less than twenty-five percent (25%) in aggregate
principal amount of the Notes then outstanding hereunder determined in
accordance with Section 8.4, by notice in writing to the Company (and to the
Trustee if given by Noteholders), may declare the principal of and premium, if
any, on all the Notes and the interest accrued thereon (including Liquidated
Damages Amount, if any) to be due and payable immediately, and upon any such
declaration the same shall become and shall be immediately due and payable,
anything in this Indenture or in the Notes contained to the contrary
notwithstanding.  If an Event of Default specified in Section 6.1(d) or (e)
with respect to the Company occurs, the principal of all the Notes and the
interest accrued thereon shall (including Liquidated Damages Amount, if any) be
immediately and automatically due and payable without necessity of further
action. This provision, however, is subject to the conditions that if, at any
time after the principal of the Notes shall have been so declared due and
payable, and before any judgment or decree for the payment of the monies due
shall have been obtained or entered as hereinafter provided, the Company shall
pay or shall deposit with the Trustee a sum sufficient to pay all matured
installments of interest upon (including Liquidated Damages Amount, if any) all
Notes and the principal of and premium, if any, on any and all Notes which
shall have become due otherwise than by acceleration (with interest on overdue
installments of interest (including Liquidated Damages Amount, if any) (to the
extent that payment of such interest is enforceable under applicable law) and
on such principal and premium, if any, at the rate borne by the Notes, to the
date of such payment or deposit) and amounts due to the Trustee pursuant to
Section 7.7, and if any and all defaults under this Indenture, other than the
nonpayment of principal of and premium, if any, and accrued interest on
(including Liquidated Damages Amount, if any) Notes which shall have become due
by acceleration, shall have been cured or waived pursuant to Section 6.7, then
and in every such case the holders of a majority in aggregate principal amount
of the Notes then outstanding, by written notice to the Company and to the
Trustee, may waive all defaults or Events of Default and rescind and annul such
declaration and its consequences; but no such waiver or rescission and
annulment shall extend to or shall affect any subsequent default or Event of
Default, or shall impair any right consequent thereon.  The Company shall
notify a Responsible Officer of the Trustee, promptly (and in any event within
five Business Days) upon becoming aware thereof, of any Event of Default.

     In case the Trustee shall have proceeded to enforce any right under this
Indenture and such proceedings shall have been discontinued or abandoned
because of such waiver or rescission and annulment or for any other reason or
shall have been determined adversely to the Trustee, then and in every such
case the Company, the holders of Notes, and the Trustee shall be restored
respectively to their several positions and rights hereunder, and all rights,
remedies and powers of the Company, the holders of Notes, and the Trustee shall
continue as though no such proceeding had been taken.

     Section 6.2 Payments of Notes on Default; Suit Therefor.  The Company
covenants that (a) in case default shall be made in the payment of any
installment of interest upon (including Liquidated Damages Amount, if any) any
of the Notes as and when the same shall become due and payable, and such
default shall have continued for a period of thirty (30) days, or (b) in case
default

                                       32

<PAGE>   40

shall be made in the payment of the principal of or premium, if any, on any of
the Notes as and when the same shall have become due and payable, whether at
maturity of the Notes or in connection with any redemption or repurchase, upon
a declaration of acceleration or otherwise and upon demand of the Trustee, the
Company will pay to the Trustee, for the benefit of the holders of the Notes,
the whole amount that then shall have become due and payable on all such Notes
for principal and premium, if any, or interest (including Liquidated Damages
Amount, if any), as the case may be, with interest upon the overdue principal
and premium, if any, and (to the extent that payment of such interest is
enforceable under applicable law) upon the overdue installments of interest
(including Liquidated Damages Amount, if any) at the rate borne by the Notes;
and, in addition thereto, such further amount as shall be sufficient to cover
the costs and expenses of collection, including reasonable compensation to the
Trustee, its agents, attorneys and counsel, and all other amounts due the
Trustee under Section 7.7.  Until such demand by the Trustee, the Company may
pay the principal of and premium, if any, and interest on (including Liquidated
Damages Amount, if any) the Notes to the registered holders, whether or not the
Notes are overdue.

     In case the Company shall fail forthwith to pay such amounts upon such
demand, the Trustee, in its own name and as trustee of an express trust, shall
be entitled and empowered to institute any actions or proceedings at law or in
equity for the collection of the sums so due and unpaid, and may prosecute any
such action or proceeding to judgment or final decree, and may enforce any such
judgment or final decree against the Company or any other obligor on the Notes
and collect in the manner provided by law out of the property of the Company or
any other obligor on the Notes wherever situated the monies adjudged or decreed
to be payable.

     In case there shall be pending proceedings for the bankruptcy or for the
reorganization of the Company or any other obligor on the Notes under Title 11
of the United States Code, or any other applicable law, or in case a receiver,
assignee or trustee in bankruptcy or reorganization, liquidator, sequestrator
or similar official shall have been appointed for or taken possession of the
Company or such other obligor, the property of the Company or such other
obligor, or in the case of any other judicial proceedings relative to the
Company or such other obligor upon the Notes, or to the creditors or property
of the Company or such other obligor, the Trustee, irrespective of whether the
principal of the Notes shall then be due and payable as therein expressed or by
declaration or otherwise and irrespective of whether the Trustee shall have
made any demand pursuant to the provisions of this Section 6.2, shall be
entitled and empowered, by intervention in such proceedings or otherwise, to
file and prove a claim or claims for the whole amount of principal, premium, if
any, and interest (including Liquidated Damages Amount, if any) owing and
unpaid in respect of the Notes, and, in case of any judicial proceedings, to
file such proofs of claim and other papers or documents as may be necessary or
advisable in order to have the claims of the Trustee and of the Noteholders
allowed in such judicial proceedings relative to the Company or any other
obligor on the Notes, its or their creditors, or its or their property, and to
collect and receive any monies  or other property payable or deliverable on any
such claims, and to distribute the same after the deduction of any amounts due
the Trustee under Section 7.7; and any receiver, assignee or trustee in
bankruptcy or reorganization, liquidator, custodian or similar official is
hereby authorized by each of the Noteholders to make such payments to the
Trustee, and, in the event that the Trustee shall consent to the making of such

                                       33

<PAGE>   41

payments directly to the Noteholders, to pay to the Trustee any amount due it
for reasonable compensation, expenses, advances and disbursements, including
counsel fees incurred by it up to the date of such distribution.  To the extent
that such payment of reasonable compensation, expenses, advances and
disbursements out of the estate in any such proceedings shall be denied for any
reason, payment of the same shall be secured by a lien on, and shall be paid
out of, any and all distributions, dividends, monies, securities and other
property which the holders of the Notes may be entitled to receive in such
proceedings, whether in liquidation or under any plan of reorganization or
arrangement or otherwise.

     All rights of action and of asserting claims under this Indenture, or
under any of the Notes, may be enforced by the Trustee without the possession
of any of the Notes, or the production thereof at any trial or other proceeding
relative thereto, and any such suit or 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 agent
and counsel, be for the ratable benefit of the holders of the Notes.

     In any proceedings brought by the Trustee (and in any proceedings
involving the interpretation of any provision of this Indenture to which the
Trustee shall be a party) the Trustee shall be held to represent all the
holders of the Notes, and it shall not be necessary to make any holders of the
Notes parties to any such proceedings.

     Section 6.3 Application of Monies Collected by Trustee.  Any monies
collected by the Trustee pursuant to this Article VI shall be applied in the
following order, at the date or dates fixed by the Trustee for the distribution
of such monies, upon presentation of the several Notes, and stamping thereon
the payment, if only partially paid, and upon surrender thereof, if fully paid:

              First:  To the payment of costs and expenses of collection,
     including all sums paid or advanced by the Trustee hereunder and the
     reasonable compensation, expenses and disbursements of the Trustee, its
     agents and counsel and all other amounts due the Trustee under Section
     7.7;

              Second:  In case the principal of the outstanding Notes shall not
     have become due and be unpaid, to the payment of interest on (including
     Liquidated Damages Amount, if any) the Notes in default in the order of
     the maturity of the installments of such interest, with interest (to the
     extent that such interest has been collected by the Trustee) upon the
     overdue installments of interest (including Liquidated Damages Amount, if
     any) at the rate borne by the Notes, such payments to be made ratably to
     the Persons entitled thereto;

              Third:  In case the principal of the outstanding Notes shall have
     become due, by declaration or otherwise, and be unpaid to the payment of
     the whole amount then owing and unpaid upon the Notes for principal and
     premium, if any, and interest (including Liquidated Damages Amount, if
     any), with interest on the overdue principal and premium, if any, and (to
     the extent that such interest has been collected by the Trustee) upon
     overdue installments

                                       34

<PAGE>   42

     of interest (including Liquidated Damages Amount, if any) at the rate
     borne by the Notes; and in case such monies shall be insufficient to pay
     in full the whole amounts so due and unpaid upon the Notes, then to the
     payment of such principal and premium, if any, and interest (including
     Liquidated Damages Amount, if any) without preference or priority of
     principal and premium, if any, over interest (including Liquidated Damages
     Amount, if any), or of interest (including Liquidated Damages Amount, if
     any) over principal and premium, if any, or of any installment of interest
     over any other installment of interest, or of any Note over any other
     Note, ratably to the aggregate of such principal and premium, if any, and
     accrued and unpaid interest; and

              Fourth:  To the payment of the remainder, if any, to the Company
     or any other Person lawfully entitled thereto.

     Section 6.4 Proceedings by Noteholder.  No holder of any Note shall have
any right by virtue of or by availing of any provision of this Indenture to
institute any suit, action or proceeding in equity or at law upon or under or
with respect to this Indenture, or for the appointment of a receiver, trustee,
liquidator, custodian or other similar official, or for any other remedy
hereunder, unless such holder previously shall have given to the Trustee
written notice of an Event of Default and of the continuance thereof, as
hereinbefore provided, and unless also the holders of not less than twenty-five
percent (25%) in aggregate principal amount of the Notes then outstanding shall
have made written request upon the Trustee to institute such action, suit or
proceeding in its own name as Trustee hereunder and shall have offered to the
Trustee such indemnity as it may require against the costs, expenses and
liabilities to be incurred therein or thereby, and the Trustee for sixty (60)
days after its receipt of such notice, request and offer of indemnity, shall
have neglected or refused to institute any such action, suit or proceeding and
no direction inconsistent with such written request shall have been given to
the Trustee pursuant to Section 6.7; it being understood and intended, and
being expressly covenanted by the taker and holder of every Note with every
other taker and holder and the Trustee, that no one or more holders of Notes
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 holder of Notes, or to obtain or seek to obtain priority over or
preference to any other such holder, or to enforce any right under this
Indenture, except in the manner herein provided and for the equal, ratable and
common benefit of all holders of Notes (except as otherwise provided herein).
For the protection and enforcement of this Section 6.4, each and every
Noteholder and the Trustee shall be entitled to such relief as can be given
either at law or in equity.

     Notwithstanding any other provision of this Indenture and any provision of
any Note, the right of any holder of any Note to receive payment of the
principal of and premium, if any (including the redemption price or repurchase
price, if any, upon a redemption or a repurchase pursuant to Article III), and
accrued interest on (including Liquidated Damages Amount, if any) such Note, on
or after the respective due dates expressed in such Note or in the event of
redemption, or to institute suit for the enforcement of any such payment on or
after such respective dates against the Company shall not be impaired or
affected without the consent of such holder.

                                       35

<PAGE>   43

     Anything in this Indenture or the Notes to the contrary notwithstanding,
the holder of any Note, without the consent of either the Trustee or the holder
of any other Note, in its own behalf and for its own benefit, may enforce, and
may institute and maintain any proceeding suitable to enforce, its rights of
conversion as provided herein.

     Section 6.5 Proceedings by Trustee.  In case of an Event of Default, the
Trustee may, in its discretion, proceed to protect and enforce the rights
vested in it by this Indenture by such appropriate judicial proceedings as are
necessary to protect and enforce any of such rights, either by suit in equity
or by action at law or by proceeding in bankruptcy or otherwise, whether for
the specific enforcement of any covenant or agreement contained in this
Indenture or in aid of the exercise of any power granted in this Indenture, or
to enforce any other legal or equitable right vested in the Trustee by this
Indenture or by law.

     Section 6.6 Remedies Cumulative and Continuing.  Except as provided in
Section 2.6, all powers and remedies given by this Article VI to the Trustee or
to the Noteholders shall, to the extent permitted by law, be deemed cumulative
and not exclusive of any thereof or of any other powers and remedies available
to the Trustee or the holders of the Notes, by judicial proceedings or
otherwise, to enforce the performance or observance of the covenants and
agreements contained in this Indenture, and no delay or omission of the Trustee
or of any holder of any of the Notes to exercise any right or power accruing
upon any default or Event of Default occurring and continuing as aforesaid
shall impair any such right or power, or shall be construed to be a waiver of
any such default or any acquiescence therein; and, subject to the provisions of
Section 6.4, every power and remedy given by this Article VI or by law to the
Trustee or to the Noteholders may be exercised from time to time, and as often
as shall be deemed expedient, by the Trustee or by the Noteholders.

     Section 6.7 Direction of Proceedings and Waiver of Defaults by Majority of
Noteholders.  The holders of a majority in aggregate principal amount of the
Notes at the time outstanding determined in accordance with Section 8.4 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, however, that (i) such direction
shall not be in conflict with any rule of law or with this Indenture, (ii) the
Trustee may take any other action which is not inconsistent with such direction
and (iii) the Trustee may decline to take any action that would benefit any
Noteholder to the detriment of any other Noteholder.  The holders of a majority
in aggregate principal amount of the Notes at the time outstanding determined
in accordance with Section 8.4 may, on behalf of the holders of all of the
Notes, waive any past default or Event of Default hereunder and its
consequences except (w) a default in the payment of interest (including
Liquidated Damages Amount, if any) or premium, if any, on, or the principal of,
the Notes, (x) a failure by the Company to convert any Notes into Common Stock,
(y) a default in the payment of the redemption price or repurchase price, if
any, pursuant to Article III or (z) a default in respect of a covenant or
provisions hereof which under Article X cannot be modified or amended without
the consent of the holders of each or all Notes then outstanding or affected
thereby.  Upon any such waiver, the Company, the Trustee and the holders of the
Notes shall be restored to their former positions and rights hereunder; but no
such waiver shall extend to any subsequent or other default

                                       36

<PAGE>   44

or Event of Default or impair any right consequent thereon.  Whenever any
default or Event of Default hereunder shall have been waived as permitted by
this Section 6.7, said default or Event of Default shall for all purposes of
the Notes and this Indenture be deemed to have been cured and to be not
continuing; but no such waiver shall extend to any subsequent or other default
or Event of Default or impair any right consequent thereon.

     Section 6.8 Undertaking to Pay Costs.  All parties to this Indenture
agree, and each holder of any Note by his acceptance thereof shall be deemed to
have agreed, that any court may, in its discretion, require, 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, the
filing by any party litigant in such suit of an undertaking to pay the costs of
such suit and that such court may in its discretion assess reasonable costs,
including reasonable attorneys' fees and expenses, against any party litigant
in such suit, having due regard to the merits and good faith of the claims or
defenses made by such party litigant; provided that the provisions of this
Section 6.8 (to the extent permitted by law) shall not apply to any suit
instituted by the Trustee, to any suit instituted by any Noteholder, or group
of Noteholders, holding in the aggregate more than ten percent in principal
amount of the Notes at the time outstanding determined in accordance with
Section 8.4, or to any suit instituted by any Noteholder for the enforcement of
the payment of the principal of or premium, if any, or interest on any Note on
or after the due date expressed in such Note or to any suit for the enforcement
of the right to convert any Note in accordance with the provisions of Article
XIV.


                                  ARTICLE VII

                             CONCERNING THE TRUSTEE

     Section 7.1 General.  The duties and responsibilities of the Trustee shall
be as provided by the TIA and as set forth herein and no implied covenants or
obligations shall be read into this Indenture against the Trustee.
Notwithstanding the foregoing, 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.  Whether or not herein 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 Article VII.

     Section 7.2 Certain Rights of Trustee.  Subject to TIA Sections 315(a)
through (d):

              (i) 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

                                       37

<PAGE>   45

     by the proper person.  The Trustee need not investigate any fact or matter
     stated in any such document;

              (ii) before the Trustee acts or refrains from acting, it may
     require an Officers' Certificate or an Opinion of Counsel, which shall
     conform to Section 15.5.  The Trustee shall not be liable for any action
     it takes or omits to take in good faith in reliance on such certificate or
     opinion;

              (iii) the Trustee may act through its attorneys and agents and
     shall not be responsible for the misconduct or negligence of any attorney
     or agent appointed with due care;

              (iv) 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, unless such holders shall have offered to
     the Trustee reasonable security or indemnity against the costs, expenses
     and liabilities that might be incurred by it in compliance with such
     request or direction;

              (v) the Trustee shall not be liable for any action it takes or
     omits to take in good faith that it believes to be authorized or within
     its rights or powers or for any action it takes or omits to take in
     accordance with the written direction of the holders of a majority in
     principal amount of the outstanding Notes relating to the time, method and
     place of conducting any proceeding for any remedy available to the
     Trustee, or exercising any trust or power conferred upon the Trustee,
     under this Indenture;

              (vi) 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;

              (vii) 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;

              (viii) the Trustee shall not be required to give any bond or
     surety in respect of the performance of its powers and duties hereunder;

              (ix) the Trustee shall not be bound to ascertain or inquire as to
     the performance or observance of any covenants, conditions or agreements
     on the part of the Company,

                                       38

<PAGE>   46

     except as otherwise set forth herein, but the Trustee may require of the
     Company full information and advice as to the performance of the
     covenants, conditions and agreements contained herein and shall be
     entitled in connection herewith to examine the books, records and premises
     of the Company; and

              (x) the permissive rights of the Trustee to do things enumerated
     in this Indenture shall not be construed as a duty and the Trustee shall
     not be answerable for other than its negligence or willful default.

     Section 7.3 Individual Rights of Trustee.  The Trustee, in its individual
or any other capacity, may become the owner or pledgee of Notes and may
otherwise deal with the Company or its Affiliates with the same rights it would
have if it were not the Trustee.  Any registrar, co-registrar, paying agent,
conversion agent or authenticating agent may do the same with like rights.
However, the Trustee is subject to TIA Sections 310(b) and 311.

     Section 7.4 Trustee's Disclaimer.  The Trustee (i) makes no representation
as to the validity or adequacy of this Indenture or the Notes, (ii) shall not
be accountable for the Company's use or application of the proceeds from the
Notes and (iii) shall not be responsible for any statement in the Notes other
than its certificate of authentication.

     Section 7.5 Notice of Default.  If any Default or any Event of Default
occurs and is continuing and if such Default or Event of Default is known to a
Responsible Officer of the  Trustee, the Trustee shall mail to each holder in
the manner and to the extent provided in TIA Section 313(c) notice of the
Default or Event of Default within 45 days after it occurs, unless such Default
or Event of Default has been cured; provided, however, that, except in the case
of a default in the payment of the principal of, premium, if any, or interest
(including Liquidated Damages Amount, if any) on any Note, the Trustee shall be
protected in withholding such notice if and so long as the board of directors,
the executive committee or a trust committee of directors and/or Responsible
Officers of the Trustee in good faith determine that the withholding of such
notice is in the interest of the Noteholders.

     Section 7.6 Conflicting Interests of Trustee.  If the Trustee has or shall
acquire a conflicting interest within the meaning of the TIA, 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 TIA and this Indenture.

     Section 7.7 Compensation and Indemnity.  The Company shall pay to the
Trustee, and the Trustee will be entitled to, such compensation as shall be
agreed upon in writing for its services.  The compensation of the Trustee shall
not be limited by any law on compensation of a trustee of an express trust. The
Company shall reimburse the Trustee upon request for all reasonable out-of-
pocket expenses and advances incurred or made by the Trustee.  Such expenses
shall include the reasonable compensation and expenses of the Trustee's agents
and counsel.

                                       39

<PAGE>   47

     The Company shall indemnify the Trustee against any and all losses,
liabilities, obligations, damages, penalties, judgments, actions, suits,
proceedings, reasonable costs and expenses (including reasonable fees and
disbursements of counsel) of any kind whatsoever which may be incurred by the
Trustee in connection with any investigative, administrative or judicial
proceeding (whether or not such indemnified party is designated a party to such
proceeding) arising out of or in connection with the acceptance or
administration of its duties under this Indenture; provided, however, that the
Company need not reimburse any expense or indemnify against any loss,
obligation, damage, penalty, judgment, action, suit, proceeding, reasonable
cost or expense (including reasonable fees and disbursements of counsel) of any
kind whatsoever which may be incurred by the Trustee in connection with any
investigative, administrative or judicial proceeding (whether or not such
indemnified party is designated a party to such proceeding) in which it is
determined that the Trustee acted with negligence, bad faith or willful
misconduct.  The Trustee shall notify the Company promptly of any claim for
which it may seek indemnity.  Failure by the Trustee to so notify the Company
shall not relieve the Company of its obligations hereunder, unless the Company
is materially prejudiced thereby.  The Company shall defend the claim and the
Trustee shall cooperate in the defense.  Unless otherwise set forth herein, the
Trustee may have separate counsel and the Company shall pay the reasonable fees
and expenses of such counsel.  The Company need not pay for any settlement made
without its consent, which consent shall not be unreasonably withheld.  The
obligations of the Company under this Section to compensate the Trustee, to pay
or reimburse the Trustee for expenses, disbursements and advances and to
indemnify and hold harmless the Trustee shall survive the satisfaction and
discharge of this Indenture and the resignation or removal of the Trustee.

     To secure the Company's payment obligations in this Section 7.7, the
Trustee shall have a lien prior to the Notes on all money or property held or
collected by the Trustee, in its capacity as Trustee, except money or property
held in trust to pay principal of, premium, if any, and interest on particular
Notes.

     If the Trustee incurs expenses or renders services after the occurrence of
an Event of Default specified in clause (d) or (e) of Section 6.1, the expenses
and the compensation for the services will be intended to constitute expenses
of administration under Title 11 of the United States Bankruptcy Code or any
applicable federal or state law for the relief of debtors.

     Section 7.8 Replacement of Trustee.  A resignation or removal of the
Trustee and appointment of a successor Trustee shall become effective only upon
the successor Trustee's acceptance of appointment as provided in this Section
7.8.

     The Trustee may resign at any time by so notifying the Company in writing
at least 30 days prior to the date of the proposed resignation.  The holders of
a majority in principal amount of the outstanding Notes may remove the Trustee
by so notifying the Trustee in writing and may appoint a successor Trustee with
the consent of the Company.  The Company may remove the Trustee if:  (i) the
Trustee is no longer eligible under Section 7.10; (ii) the Trustee is adjudged
a bankrupt or an

                                       40

<PAGE>   48

insolvent; (iii) a receiver or other public officer takes charge of the Trustee
or its property; or (iv) the Trustee becomes incapable of acting.

     If the Trustee resigns or is removed, or if a vacancy exists in the office
of Trustee for any reason, the Company shall promptly appoint a successor
Trustee.  Within one year after the successor Trustee takes office, the holders
of a majority in principal amount of the outstanding Notes may appoint a
successor Trustee to replace the successor Trustee appointed by the Company. If
the successor Trustee does not deliver its written acceptance required by the
next succeeding paragraph of this Section 7.8 within 30 days after the retiring
Trustee resigns or is removed, the retiring Trustee, the Company or the holders
of a majority in principal amount of the outstanding Notes may petition any
court of competent jurisdiction for the appointment of a successor Trustee.

     A successor Trustee shall deliver a written acceptance of its appointment
to the retiring Trustee and to the Company.  Immediately after the delivery of
such written acceptance, subject to the lien provided in Section 7.7, (i) the
retiring Trustee shall transfer all property held by it as Trustee to the
successor Trustee, (ii) the resignation or removal of the retiring Trustee
shall become effective and (iii) the successor Trustee shall have all the
rights, powers and duties of the Trustee under this Indenture.  A successor
Trustee shall mail notice of its succession to each holder.

     If the Trustee is no longer eligible under Section 7.10, any holder who
satisfies the requirements of TIA Section 310(b) may petition any court of
competent jurisdiction for the removal of the Trustee and the appointment of a
successor Trustee.

     The Company shall give notice of any resignation and any removal of the
Trustee and each appointment of a successor Trustee to all holders.  Each
notice shall include the name of the successor Trustee and the address of its
Corporate Trust Office.

     Notwithstanding replacement of the Trustee pursuant to this Section 7.8,
the Company's obligation under Section 7.7 shall continue for the benefit of
the retiring Trustee.

     Section 7.9 Successor Trustee by Merger, Etc.  If the Trustee consolidates
with, merges or converts into, or transfers all or substantially all of its
corporate trust business to, another corporation or national banking
association, the resulting, surviving or transferee corporation or national
banking association without any further act shall be the successor Trustee with
the same effect as if the successor Trustee had been named as the Trustee
herein.

     Section 7.10 Eligibility.  This Indenture shall always have a Trustee who
satisfies the requirements of TIA Section 310(a)(1).  The Trustee (or the bank
holding company to which the Trustee is a member) shall have a combined capital
and surplus of at least $25 million as set forth in its most recent published
annual report of condition.

     Section 7.11 Money Held in Trust.  Subject to the provisions of Section
12.4, all monies received by the Trustee shall, until used or applied as herein
provided, be held in trust for the

                                       41

<PAGE>   49

purposes for which they were received.  The Trustee shall not be liable for
interest on any money received by it except as the Trustee may agree with the
Company.  Money held in trust by the Trustee need not be segregated from other
funds except to the extent required by law and except for money held in trust
under Article XII of this Indenture.

     Section 7.12 Withholding Taxes.  The Trustee, as agent for the Company,
shall exclude and withhold from each payment of principal and interest and
other amounts due hereunder or under the Notes any and all withholding taxes
applicable thereto as required by law.  The Trustee agrees to act as such
withholding agent and, in connection therewith, whenever any present or future
taxes or similar charges are required to be withheld with respect to any
amounts payable in respect of the Notes, to withhold such amounts and timely
pay the same to the appropriate authority in the name of and on behalf of the
holders of the Notes, that it will file any necessary withholding tax returns
or statements when due, and that, as promptly as possible after the payment
thereof, it will deliver to each holder of a Note appropriate documentation
showing the payment thereof, together with such additional documentary evidence
as such holders may reasonably request from time to time.

     Section 7.13 Preferential Collection of Claims.  If and when the Trustee
shall be or become a creditor of the Company (or any other obligor upon the
Notes), the Trustee shall be subject to the provisions of the Trust Indenture
Act regarding the collection of the claims against the Company (or any such
other obligor).

     Section 7.14 Trustee's Application for Instructions from the Company.  Any
application by the Trustee for written instructions from the Company (other
than with regard to any action proposed to be take or omitted to be taken by
the Trustee that affects the rights of the holders of the Notes under this
Indenture) may, at the option of the Trustee, set forth in writing any action
proposed to be taken or omitted by the Trustee under this Indenture and the
date on and/or after which such action shall be taken or such omission shall be
effective.  The Trustee shall not be liable for any action taken by, or
omission of, the Trustee in accordance with a proposal included in such
application on or after the date specified in such application (which date
shall not be less than three (3) Business Days after the date any officer of
the Company actually receives such application, unless any such officer shall
have consented in writing to any earlier date) unless prior to taking any such
action (or the effective date in the case of an omission), the Trustee shall
have received written instructions in response to such application specifying
the action to be taken or omitted.

                                  ARTICLE VIII

                            CONCERN THE NOTEHOLDERS

     Section 8.1 Action by Noteholders.  Whenever in this Indenture it is
provided that the holders of a specified percentage in aggregate principal
amount of the Notes may take any action (including the making of any demand or
request, the giving of any notice, consent or waiver or the taking of any other
action), the fact that at the time of taking any such action, the holders of
such

                                       42

<PAGE>   50

specified percentage have joined therein may be evidenced (a) by any instrument
or any number of instruments of similar tenor executed by Noteholders in person
or by agent or proxy appointed in writing, or (b) by the record of the holders
of Notes voting in favor thereof at any meeting of Noteholders duly called and
held in accordance with the provisions of Article IX, or (c) by a combination
of such instrument or instruments and any such record of such a meeting of
Noteholders.  Whenever the Company or the Trustee solicits the taking of any
action by the holders of the Notes, the Company or the Trustee may fix in
advance of such solicitation, a date as the record date for determining holders
entitled to take such action (except that in respect of any amended consent
solicitation, the record date in respect of such amended consent solicitation
may be the same as the record date of the original consent solicitation).  The
record date shall be not more than fifteen (15) days prior to the date of
commencement of solicitation of such action.

     Section 8.2 Proof of Execution by Noteholders.  Subject to the provisions
of Sections 7.1, 7.2 and 9.5, proof of the execution of any instrument by a
Noteholder or its agent or proxy shall be sufficient if made in accordance with
such reasonable rules and regulations as may be prescribed by the Trustee or in
such manner as shall be satisfactory to the Trustee. The holding of Notes shall
be proved by the Note register or by a certificate of the Note registrar.

     The record of any Noteholders' meeting shall be proved in the manner
provided in Section 9.6.

     Section 8.3 Who Are Deemed Absolute Owners.  The Company, the Trustee, any
paying agent, any conversion agent and any Note registrar may deem the Person
in whose name such Note shall be registered upon the Note register to be, and
may treat it as, the absolute owner of such Note (whether or not such Note
shall be overdue and notwithstanding any notation of ownership or other writing
thereon) for the purpose of receiving payment of or on account of the principal
of, premium, if any, and interest on such Note, for conversion of such Note and
for all other purposes; and neither the Company nor the Trustee nor any paying
agent nor any conversion agent nor any Note registrar shall be affected by any
notice to the contrary.  All such payments so made to any holder for the time
being, or upon his order, shall be valid, and, to the extent of the sum or sums
so paid, effectual to satisfy and discharge the liability for monies payable
upon any such Note.

     Section 8.4 Company-Owned Notes Disregarded.  In determining whether the
holders of the requisite aggregate principal amount of Notes have concurred in
any direction, consent, waiver or other action under this Indenture, Notes
which are owned by the Company or any other obligor on the Notes or any
Affiliate of the Company or any other obligor on the Notes shall be disregarded
and deemed not to be outstanding for the purpose of any such determination;
provided that, for the purposes of determining whether the Trustee shall be
protected in relying on any such direction, consent, waiver or other action,
only Notes which a Responsible Officer knows are so owned shall be so
disregarded.  Notes so owned which have been pledged in good faith may be
regarded as outstanding for the purposes of this Section 8.4 if the pledgee
shall establish to the satisfaction of the Trustee the pledgee's right to vote
such Notes and that the pledgee is not the Company, any other obligor on the
Notes or any Affiliate of the Company or any such other obligor.  In the case
of a

                                       43

<PAGE>   51

dispute as to such right, any decision by the Trustee taken upon the advice of
counsel shall be full protection to the Trustee.  Upon request of the Trustee,
the Company shall furnish to the Trustee promptly an Officers' Certificate
listing and identifying all Notes, if any, known by the Company to be owned or
held by or for the account of any of the above described Persons; and, subject
to Section 7.1, the Trustee shall be entitled to accept such Officers'
Certificate as conclusive evidence of the facts therein set forth and of the
fact that all Notes not listed therein are outstanding for the purpose of any
such determination.

     Section 8.5 Revocation of Consents; Future Holders Bound.  At any time
prior to (but not after) the evidencing to the Trustee, as provided in Section
8.1, of the taking of any action by the holders of the percentage in aggregate
principal amount of the Notes specified in this Indenture in connection with
such action, any holder of a Note which is shown by the evidence to be included
in the Notes the holders of which have consented to such action may, by filing
written notice with the Trustee at its Corporate Trust Office and upon proof of
holding as provided in Section 8.2, revoke such action so far as concerns such
Note.  Except as aforesaid, any such action taken by the holder of any Note
shall be conclusive and binding upon such holder and upon all future holders
and owners of such Note and of any Notes issued in exchange or substitution
therefor, irrespective of whether any notation in regard thereto is made upon
such Note or any Note issued in exchange or substitution therefor.


                                   ARTICLE IX

                             NOTEHOLDERS' MEETINGS

     Section 9.1 Purpose of Meetings.  A meeting of Noteholders may be called
at any time and from time to time pursuant to the provisions of this Article IX
for any of the following purposes:


                 (1)  to give any notice to the Company or to the Trustee or to
give any directions to the Trustee permitted under this Indenture, or to
consent to the waiving of any default or Event of Default hereunder and its
consequences, or to take any other action authorized to be taken by Noteholders
pursuant to any of the provisions of Article VI;


                 (2)  to remove the Trustee and nominate a successor trustee
pursuant to the provisions of Article VII;


                 (3)  to consent to the execution of an indenture or indentures
supplemental hereto pursuant to the provisions of Section 10.2; or


                 (4)  to take any other action authorized to be taken by or on
behalf of the holders of any specified aggregate principal amount of the Notes
under any other provision of this Indenture or under applicable law.

                                       44

<PAGE>   52

Nothing in this Article IX imposes any limitation on the Company's ability to
solicit the  Noteholders' taking any action (including, without limitation, the
actions in clauses (1) through (4) above) without a meeting in accordance with
Article VIII

     Section 9.2 Call of Meetings by Trustee.  The Trustee may at any time call
a meeting of Noteholders to take any action specified in Section 9.1, to be
held at such time and at such place as the Trustee shall determine. Notice of
every meeting of the Noteholders, setting forth the time and the place of such
meeting and in general terms the action proposed to be taken at such meeting
and the establishment of any record date pursuant to Section 8.1, shall be
mailed at the expense of the Company to holders of Notes at their addresses as
they shall appear on the Note register.  Such notice shall also be mailed to
the Company.  Such notices shall be mailed not less than twenty (20) nor more
than ninety (90) days prior to the date fixed for the meeting.

     Any meeting of Noteholders shall be valid without notice if the holders of
all Notes then outstanding are present in person or by proxy or if notice is
waived before or after the meeting by the holders of all Notes outstanding, and
if the Company and the Trustee are either present by duly authorized
representatives or have, before or after the meeting, waived notice.

     Section 9.3 Call of Meetings by Company or Noteholders.  In case (x) at
any time the Company, pursuant to a resolution of its Board of Directors, (y)
at any time when a Default or Event of Default has occurred and is continuing,
the holders of at least ten percent (10%) in aggregate principal amount of the
Notes then outstanding or (z) the holders of at least twenty-five percent (25%
in aggregate principal amount of the Notes then outstanding, shall have
requested the Trustee to call a meeting of Noteholders, by written request
setting forth in reasonable detail the action proposed to be taken at the
meeting, and the Trustee shall not have mailed the notice of such meeting
within twenty (20) days after receipt of such request, then the Company or such
Noteholders may determine the time and the place for such meeting and may call
such meeting to take any action authorized in Section 9.1, by mailing notice
thereof as provided in Section 9.2.

     Section 9.4 Qualifications for Voting.  To be entitled to vote at any
meeting of Noteholders a person shall (a) be a holder of one or more Notes on
the record date pertaining to such meeting or (b) be a person appointed by an
instrument in writing as proxy by a holder of one or more Notes on the record
date pertaining to such meeting. The only persons who shall be entitled to be
present or to speak at any meeting of Noteholders shall be the persons entitled
to vote at such meeting and their counsel and any representatives of the
Trustee and its counsel and any representatives of the Company and its counsel.

     Section 9.5 Regulations.  Notwithstanding any other provisions of this
Indenture, the Trustee may make such reasonable regulations as it may deem
advisable for any meeting of Noteholders, in regard to proof of the holding of
Notes and of the appointment of proxies, and in regard to the appointment and
duties of inspectors of votes, the submission and examination of proxies,
certificates and other evidence of the right to vote, and such other matters
concerning the conduct of the meeting as it shall think fit.

                                       45

<PAGE>   53

     The Trustee shall, by an instrument in writing, appoint a temporary
chairman of the meeting, unless the meeting shall have been called by the
Company or by Noteholders as provided in Section 9.3, in which case the Company
or the Noteholders calling the meeting, as the case may be, shall in like
manner appoint a temporary chairman. A permanent chairman and a permanent
secretary of the meeting shall be elected by vote of the holders of a majority
in principal amount of the Notes represented at the meeting and entitled to
vote at the meeting.

     Subject to the provisions of Section 8.4, at any meeting each Noteholder
or proxyholder shall be entitled to one vote for each $1,000 principal amount
of Notes held or represented by him; provided, however, that no vote shall be
cast or counted at any meeting in respect of any Note challenged as not
outstanding and ruled by the chairman of the meeting to be not outstanding. The
chairman of the meeting shall have no right to vote other than by virtue of
Notes held by him or instruments in writing as aforesaid duly designating him
as the proxy to vote on behalf of other Noteholders.  Any meeting of
Noteholders duly called pursuant to the provisions of Section 9.2 or 9.3 may be
adjourned from time to time by the holders of a majority of the aggregate
principal amount of Notes represented at the meeting, whether or not
constituting a quorum, and the meeting may be held as so adjourned without
further notice.

     Section 9.6 Voting. The vote upon any resolution submitted to any meeting
of Noteholders shall be by written ballot on which shall be subscribed the
signatures of the holders of Notes or of their representatives by proxy and the
principal amount of the Notes held or represented by them.  The permanent
chairman of the meeting shall appoint two inspectors of votes who shall count
all votes cast at the meeting for or against any resolution and who shall make
and file with the secretary of the meeting their verified written reports in
duplicate of all votes cast at the meeting.  A record in duplicate of the
proceedings of each meeting of Noteholders shall be prepared by the secretary
of the meeting and there shall be attached to said record the original reports
of the inspectors of votes on any vote by ballot taken thereat and affidavits
by one or more persons having knowledge of the facts setting forth a copy of
the notice of the meeting and showing that said notice was mailed as provided
in Section 9.2.  The record shall show the principal amount of the Notes voting
in favor of or against any resolution.  The record shall be signed and verified
by the affidavits of the permanent chairman and secretary of the meeting and
one of the duplicates shall be delivered to the Company and the other to the
Trustee to be preserved by the Trustee, the latter to have attached thereto the
ballots voted at the meeting.

     Any record so signed and verified shall be conclusive evidence of the
matters therein stated.

     Section 9.7 Exercise of Rights of Trustee or Noteholders May Not be
Hindered or Delayed by Call of Meeting.  Nothing contained in this Article IX
will be deemed or construed to authorize or permit, by reason of any call of a
meeting of Noteholders or any rights expressly or impliedly conferred hereunder
to make such call, any hindrance or delay in the exercise of any right or
rights conferred upon or reserved to the Trustee or to the Noteholders under
any of the provisions of this Indenture or the Notes.

                                       46

<PAGE>   54

     Section 9.8 Procedures Not Exclusive.   The procedures set forth in this
Article IX are not exclusive and the rights and obligations of the Company, the
Trustee and the Noteholders under other Articles of this Indenture will in no
way be limited by the provisions of this Article IX.


                                   ARTICLE X

                            SUPPLEMENTAL INDENTURES

     Section 10.1 Supplemental Indentures Without Consent of Noteholders.  The
Company, when authorized by the resolutions of the Board of Directors (as
evidenced by a Board Resolution delivered to the Trustee), and the Trustee may,
from time to time, and at any time enter into an indenture or indentures
supplemental hereto for one or more of the following purposes:

              (a) to make provision with respect to the conversion rights of
the holders of Notes pursuant to the requirements of Section 14.6 and the
repurchase obligations of the Company pursuant to the requirements of Section
3.5(e);

              (b) to convey, transfer, assign, mortgage or pledge to the
Trustee as security for the Notes, any property or assets;

              (c) to evidence the succession of another Person to the Company,
or successive successions, and the assumption by the successor Person of the
covenants, agreements and obligations of the Company pursuant to Article XI;

              (d) to add to the covenants of the Company such further
covenants, restrictions or conditions, or grant to the Noteholders such other
or further rights, as the Board of Directors and the Trustee shall consider to
be for the benefit of the holders of Notes, and to make the occurrence, or the
occurrence and continuance, of a default in any such additional covenants,
restrictions or conditions a default or an Event of Default permitting the
enforcement of all or any of the several remedies provided in this Indenture as
herein set forth; provided, however, that in respect of any such additional
covenant, restriction or condition, such supplemental indenture may provide for
a particular period of grace after default (which period may be shorter or
longer than that allowed in the case of other defaults), procedures or
requirements relating to the waiver of such default (which procedures or
requirements may be more or less stringent than those applicable in the case of
other defaults) or may provide for an immediate enforcement upon such default
or may limit the remedies available to the Trustee upon such default;

              (e) to provide for the issuance under this Indenture of Notes in
coupon form (including Notes registrable as to principal only) and to provide
for exchangeability of such Notes with the Notes issued hereunder in fully
registered form and to make all appropriate changes for such purpose;

                                       47

<PAGE>   55

              (f) to cure any ambiguity or to correct or supplement any
provision contained herein or in any supplemental indenture that may be
defective or inconsistent with any other provision contained herein or in any
supplemental indenture, or to make such other provisions in regard to matters
or questions arising under this Indenture that shall not materially adversely
affect the interests of the holders of the Notes (as determined in good faith
by the Board of Directors);

              (g) to evidence and provide for the acceptance of appointment
hereunder by a successor Trustee with respect to the Notes; or

              (h) to modify, eliminate or add to the provisions of this
Indenture to such extent as shall be necessary to effect the qualifications of
this Indenture under the Trust Indenture Act, or under any similar federal
statute hereafter enacted.

     Upon the written request of the Company, accompanied by a copy of the
resolutions of the Board of Directors certified by its Secretary or Assistant
Secretary authorizing the execution of any supplemental indenture, the Trustee
is hereby authorized to join with the Company in the execution of any such
supplemental indenture, to make any further appropriate agreements and
stipulations that may be therein contained and to accept the conveyance,
transfer and assignment of any property thereunder, but the Trustee shall not
be obligated to, but may in its discretion, enter into any supplemental
indenture that affects the Trustee's own rights, duties or immunities under
this Indenture or otherwise.

     Any supplemental indenture authorized by the provisions of this Section
10.1 may be executed by the Company and the Trustee without the consent of the
holders of any of the Notes at the time outstanding, notwithstanding any of the
provisions of Section 10.2.

     Notwithstanding any other provision of the Indenture or the Notes, the
Registration Rights Agreement and the obligation to pay Liquidated Damages
Amount thereunder may be amended, modified or waived in accordance with the
provisions of the Registration Rights Agreement.

     Section 10.2 Supplemental Indenture with Consent of Noteholders. With the
consent (evidenced as provided in Article VIII) of the holders of not less than
a majority in aggregate principal amount of the Notes at the time outstanding,
the Company, when authorized by the resolutions of the Board of Directors, and
the Trustee may, from time to time and at any time, enter into an indenture or
indentures supplemental hereto for the purpose of adding any provisions to or
changing in any manner or eliminating any of the provisions of this Indenture
or any supplemental indenture or of modifying in any manner the rights of the
holders of the Notes; provided, however, that no such supplemental indenture
shall (i) extend the fixed maturity of any Note, or reduce the interest rate or
extend the time for payment of interest thereon, or reduce the principal amount
thereof or premium, if any, thereon, or reduce any amount payable on redemption
or repurchase thereof, or impair the right of any Noteholder to institute suit
for the payment thereof, or make the principal thereof or interest or premium,
if any, thereon payable in any coin or currency other than that provided in the
Notes, or after the occurrence of a Fundamental Change, and subject to the
terms

                                       48

<PAGE>   56

of Section 3.5(g), change the obligation of the Company to repurchase any Note
because of that Fundamental Change in a manner adverse to the holder of Notes,
or impair the right to convert the Notes into Common Stock subject to the terms
set forth herein, including Section 14.6, in each case, without the consent of
the holder of each Note so affected, or (ii) reduce the aforesaid percentage of
Notes, the holders of which are required to consent to any such supplemental
indenture, without the consent of the holders of all Notes then outstanding and
further, provided, that this Section 10.2 shall not preclude the right of the
Noteholders to waive a default specified in Section 6.1(a) or Section 6.1(b) of
this Indenture in accordance with the provisions of Section 6.1.

     Upon the written request of the Company, accompanied by a copy of the
resolutions of the Board of Directors certified by its Secretary or Assistant
Secretary and authorizing the execution of any such supplemental indenture, and
upon the filing with the Trustee of evidence of the consent of Noteholders as
aforesaid, the Trustee shall join with the Company in the execution of such
supplemental indenture unless such supplemental indenture affects the Trustee's
own rights, duties or immunities under this Indenture or otherwise, in which
case the Trustee may in its discretion, but shall not be obligated to, enter
into such supplemental indenture.

     It shall not be necessary for the consent of the Noteholders under this
Section 10.2 to approve the particular form of any proposed supplemental
indenture, but it shall be sufficient if such consent shall approve the
substance thereof.

     Section 10.3 Effect of Supplemental Indenture.  Any supplemental indenture
executed pursuant to the provisions of this Article X shall comply with the
Trust Indenture Act, as then in effect, provided that this Section 10.3 shall
not require such supplemental indenture or the Trustee to be qualified under
the Trust Indenture Act prior to the time such qualification is in fact
required under the terms of the Trust Indenture Act or the Indenture has been
qualified under the Trust Indenture Act, nor shall it constitute any admission
or acknowledgment by any party to such supplemental indenture that any such
qualification is required prior to the time such qualification is in fact
required under the terms of the Trust Indenture Act or the Indenture has been
qualified under the Trust Indenture Act.  Upon the execution of any
supplemental indenture pursuant to the provisions of this Article X, this
Indenture shall be and be deemed to be modified and amended in accordance
therewith and the respective rights, limitation of rights, obligations, duties
and immunities under this Indenture of the Trustee, the Company and the holders
of Notes shall thereafter be determined, exercised and enforced hereunder,
subject in all respects to such modifications and amendments and all the term
and conditions of any such supplemental indenture shall be and be deemed to be
part of the terms and conditions of this Indenture for any and all purposes.


     Section 10.4 Notation on Notes.  Notes authenticated and delivered after
the execution of any supplemental indenture pursuant to the provisions of this
Article X may bear a notation in form approved by the Trustee as to any matter
provided for in such supplemental indenture.  If the Company or the Trustee
shall so determine, new Notes so modified as to conform, in the opinion of the
Trustee and the Board of Directors, to any modification of this Indenture
contained in any such

                                       49

<PAGE>   57

supplemental indenture may, at the Company's expense, be prepared and executed
by the Company, authenticated by the Trustee (or an authenticating agent duly
appointed by the Trustee pursuant to Section 15.11) and delivered in exchange
for the Notes then outstanding, upon surrender of such Notes then outstanding.

     Section 10.5 Evidence of Compliance of Supplemental Indenture to Be
Furnished to Trustee.  Prior to entering into any supplemental indenture, the
Trustee may request and an Officers' Certificate and an Opinion of Counsel
meeting the requirements set forth in Section 15.5 as conclusive evidence that
any supplemental indenture executed pursuant hereto complies with the
requirements of this Article X. The Opinion of Counsel shall also state that
the Supplemental Indenture will be valid and binding upon the Company, subject
to customary exceptions.


                                   ARTICLE XI

               CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE

     Section 11.1 Company May Consolidate, Etc., on Certain Terms.  Subject to
the provisions of Section 11.2, nothing contained in this Indenture or in any
of the Notes shall prevent any consolidation or merger of the Company with or
into any other Person or Persons (whether or not affiliated with the Company),
or successive consolidations or mergers in which the Company or its successor
or successors shall be a party or parties, or shall prevent any sale,
conveyance or lease (or successive sales, conveyances or leases) of all or
substantially all of the property of the Company, to any other Person (whether
or not affiliated with the Company), authorized to acquire and operate the same
and that shall be organized under the laws of the United States of America, any
state thereof or the District of Columbia; provided that upon any such
consolidation, merger, sale, conveyance or lease, the due and punctual payment
of the principal of and premium, if any, and interest (including Liquidated
Damages Amount, if any) on all of the Notes, according to their tenor and the
due and punctual performance and observance of all of the covenants and
conditions of this Indenture to be performed by the Company, shall be expressly
assumed, by supplemental indenture satisfactory in form to the Trustee,
executed and delivered to the Trustee by the Person (if other than the Company)
formed by such consolidation, or into which the Company shall have been merged,
or by the Person that shall have acquired or leased such property, and such
supplemental indenture shall provide for the applicable conversion rights set
forth in Section 14.6.

     Section 11.2 Successor Corporation to Be Substituted.  In case of any such
consolidation, merger, sale, conveyance or lease and upon the assumption by the
successor Person, by supplemental indenture, executed and delivered to the
Trustee and satisfactory in form to the Trustee, of the due and punctual
payment of the principal of and premium, if any, and interest on all of the
Notes and the due and punctual performance of all of the covenants and
conditions of this Indenture to be performed by the Company, such successor
Person shall succeed to and be substituted for the Company, with the same
effect as if it had been named herein as the Company.  Such successor Person
thereupon may cause to be signed, and may issue either in its own name or

                                       50

<PAGE>   58

in the name of Nextel Communications, Inc. any or all of the Notes, issuable
hereunder that theretofore shall not have been signed by the Company and
delivered to the Trustee; and, upon the order of such successor Person instead
of the Company and subject to all the terms, conditions and limitations in this
Indenture prescribed, the Trustee shall authenticate and shall deliver, or
cause to be authenticated and delivered, any Notes that previously shall have
been signed and delivered by the officers of the Company to the Trustee for
authentication, and any Notes that such successor Person thereafter shall cause
to be signed and delivered to the Trustee for that purpose.  All the Notes so
issued shall in all respects have the same legal rank and benefit under this
Indenture as the Notes theretofore or thereafter issued in accordance with the
terms of this Indenture as though all of such Notes had been issued at the date
of the execution hereof.  In the event of any such consolidation, merger, sale,
conveyance or lease, the Person named as the "Company" in the first paragraph
of this Indenture or any successor that shall thereafter have become such in
the manner prescribed in this Article XI may be dissolved, wound up and
liquidated at any time thereafter and such Person shall be released from its
liabilities as obligor and maker of the Notes and from its obligations under
this Indenture.

     In case of any such consolidation, merger, sale, conveyance or lease, such
changes in phraseology and form (but not in substance) may be made in the Notes
thereafter to be issued as may be appropriate.

     Section 11.3 Opinion of Counsel to Be Given Trustee.  The Trustee shall
receive an Officers' Certificate and an Opinion of Counsel as conclusive
evidence that any such consolidation, merger, sale, conveyance or lease and any
such assumption complies with the provisions of this Article XI.


                                  ARTICLE XII

                    SATISFACTION AND DISCHARGE OF INDENTURE

     Section 12.1 Discharge of Indenture.  When (a) the Company shall deliver
to the Trustee for cancellation all Notes theretofore authenticated (other than
any Notes that have been destroyed, lost or stolen and in lieu of or in
substitution for which other Notes shall have been authenticated and delivered)
and not theretofore canceled, or (b) all the Notes not theretofore canceled or
delivered to the Trustee for cancellation shall have become due and payable, or
are by their terms to become due and payable within one year or are to be
called for redemption within one year under arrangements satisfactory to the
Trustee for the giving of notice of redemption, and the Company shall deposit
with the Trustee, in trust, funds sufficient to pay at maturity or upon
redemption of all of the Notes (other than any Notes that shall have been
mutilated, destroyed, lost or stolen and in lieu of or in substitution for
which other Notes shall have been authenticated and delivered) not theretofore
canceled or delivered to the Trustee for cancellation, including principal and
premium, if any, and interest due or to become due to such date of maturity or
redemption date, as the case may be, accompanied by a verification report, as
to the sufficiency of the deposited amount, from an

                                       51

<PAGE>   59

independent certified accountant or other financial professional satisfactory
to the Trustee, and if the Company shall also pay or cause to be paid all other
sums payable hereunder by the Company, then this Indenture shall cease to be of
further effect (except as to (i) remaining rights of registration of transfer,
substitution and exchange and conversion of Notes, (ii) rights hereunder of
Noteholders to receive payments of principal of and premium, if any, and
interest on, the Notes and the other rights, duties and obligations of
Noteholders, as beneficiaries hereof with respect to the amounts, if any, so
deposited with the Trustee and (iii) the rights, obligations and immunities of
the Trustee hereunder), and the Trustee, on written demand of the Company
accompanied by an Officers' Certificate and an Opinion of Counsel as required
by Section 15.5 and at the cost and expense of the Company, shall execute
proper instruments acknowledging satisfaction of and discharging this
Indenture; the Company, however, hereby agreeing to reimburse the Trustee for
any costs or expenses thereafter reasonably and properly incurred by the
Trustee and to compensate the Trustee for any services thereafter reasonably
and properly rendered by the Trustee in connection with this Indenture or the
Notes.

     Section 12.2 Deposited Monies to Be Held in Trust by Trustee. Subject to
Section 12.4, all monies deposited with the Trustee pursuant to Section 12.1
shall be held in trust for the sole benefit of the Noteholders and such monies
shall be applied by the Trustee to the payment, either directly or through any
paying agent (including the Company if acting as its own paying agent), to the
holders of the particular Notes for the payment or redemption of which such
monies have been deposited with the Trustee, of all sums due and to become due
thereon for principal and interest and premium, if any.

     Section 12.3 Paying Agent to Repay Monies Held.  Upon the satisfaction and
discharge of this Indenture, all monies then held by any paying agent of the
Notes (other than the Trustee) shall, upon written request of the Company set
forth in an Officer's Certificate, be repaid to it or paid to the Trustee, and
thereupon such paying agent shall be released from all further liability with
respect to such monies.

     Section 12.4 Return of Unclaimed Monies.  Subject to the requirements of
applicable law, any monies deposited with or paid to the Trustee for payment of
the principal of, premium, if any, or interest on Notes and not applied but
remaining unclaimed by the holders of Notes for two years after the date upon
which the principal of, premium, if any, or interest on such Notes, as the case
may be, shall have become due and payable, shall be repaid to the Company by
the Trustee on demand and all liability of the Trustee shall thereupon cease
with respect to such monies; and the holder of any of the Notes shall
thereafter look only to the Company for any payment that such holder may be
entitled to collect unless an applicable abandoned property law designates
another Person. Notwithstanding the foregoing, this Section 12.4 shall not be
applicable to monies deposited with or paid to the Trustee in respect of any
holder of Notes to the extent any such holder is no longer entitled to the
receipt of any such monies, and the Trustee shall repay any such monies to the
Company on demand.

                                       52

<PAGE>   60

     Section 12.5 Reinstatement.  If the Trustee or the paying agent is unable
to apply any money in accordance with Section 12.2 by reason of any order or
judgment of any court or governmental authority enjoining, restraining or
otherwise prohibiting such application, the Company's obligations under this
Indenture and the Notes shall be revived and reinstated as though no deposit
had occurred pursuant to Section 12.1 until such time as the Trustee or the
paying agent is permitted to apply all such money in accordance with Section
12.2; provided, however, that if the Company makes any payment of interest on
or principal of any Note following the reinstatement of its obligations, the
Company shall be subrogated to the rights of the holders of such Notes to
receive such payment from the money held by the Trustee or paying agent.


                                  ARTICLE XIII


        IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS

     Section 13.1 Indenture and Notes Solely Corporate Obligations. No recourse
for the payment of the principal of or premium, if any, or interest on any
Note, or for any claim based thereon or otherwise in respect thereof, and no
recourse under or upon any obligation, covenant or agreement of the Company in
this Indenture or in any supplemental indenture or in any Note, or because of
the creation of any indebtedness represented thereby, shall be had against any
incorporator, stockholder, employee, agent, officer, director or subsidiary, as
such, past, present or future, of the Company or of any successor corporation,
either directly or through the Company or any successor corporation, whether by
virtue of any constitution, statute or rule of law, or by the enforcement of
any assessment or penalty or otherwise; it being expressly understood that all
such liability is hereby expressly waived and released as a condition of, and
as a consideration for, the execution of this Indenture and the issue of the
Notes.


                                  ARTICLE XIV

                              CONVERSION OF NOTES

     Section 14.1 Right to Convert.  Subject to and upon compliance with the
provisions of this Indenture, the holder of any Note shall have the right, at
its option, at any time after the original issuance of the Notes hereunder
through the close of business on the Business Day prior to the date of
repurchase, redemption or final maturity of the Notes (except as provided in
Section 3.4 and except that, with respect to any Note or portion of a Note that
shall be called for redemption or tendered for repurchase pursuant to Section
3.5, such right shall not terminate, if the Company shall default in payment
due upon redemption or purchase thereof) to convert the principal amount of any
such Note, or any portion of such principal amount which is $1,000 or an
integral multiple thereof, into that number of fully paid and non-assessable
shares of Common Stock (as such shares shall then be constituted) obtained by
dividing the principal amount of the Note or portion thereof surrendered for
conversion by the Conversion Price in effect at such time, by surrender of the
Note so to be

                                       53

<PAGE>   61

converted in whole or in part in the manner provided, together with any
required funds, in Section 14.2.  A Note in respect of which a holder is
exercising its option to require repurchase upon a Fundamental Change pursuant
to Section 3.5 may be converted only if such holder withdraws its election to
exercise in accordance with Section 3.5.  A holder of Notes is not entitled to
any rights of a holder of Common Stock until such holder has converted his
Notes to Common Stock, and only to the extent such Notes are deemed to have
been converted to Common Stock under this Article XIV.

     Section 14.2 Exercise of Conversion Privilege; Issuance of Common Stock on
Conversion; No Adjustment for Interest or Dividends. In order to exercise the
conversion privilege with respect to any Note in certificated form, the holder
of any such Note to be converted in whole or in part shall surrender such Note,
duly endorsed, at an office or agency maintained by the Company pursuant to
Section 4.2, accompanied by the funds, if any, required by this Section 14.2,
and shall give written notice of conversion in the form provided on the Notes
(or such other notice which is acceptable to the Company) to the office or
agency that the holder elects to convert such Note or the portion thereof
specified in said notice. Such notice shall also state the name or names (with
address or addresses) in which the certificate or certificates for shares of
Common Stock which shall be issuable on such conversion shall be issued, and
shall be accompanied by transfer taxes, if required pursuant to Section 14.7.
Each such Note surrendered for conversion shall, unless the shares issuable on
conversion are to be issued in the same name as the registration of such Note,
be duly endorsed by, or be accompanied by instruments of transfer in form
satisfactory to the Company duly executed by, the holder or his duly authorized
attorney.

     In order to exercise the conversion privilege with respect to any interest
in a Note in global form, the holder must complete the appropriate instruction
form for conversion pursuant to the Depository's book-entry conversion program,
deliver by book-entry delivery an interest in such Note in global form, furnish
appropriate endorsements and transfer documents if required by the Company or
the Trustee or conversion agent, and pay the funds, if any, required by this
Section 14.2 and any transfer taxes if required pursuant to Section 14.7.

     As promptly as practicable after satisfaction of the requirements for
conversion set forth above, subject to compliance with any restrictions on
transfer if shares issuable on conversion are to be issued in a name other than
that of the Noteholder (as if such transfer were a transfer of the Note or
Notes (or portion thereof) so converted), the Company shall issue and shall
deliver to such holder at the office or agency maintained by the Company for
such purpose pursuant to Section 4.2, a certificate or certificates for the
number of full shares of Common Stock issuable upon the conversion of such Note
or portion thereof in accordance with the provisions of this Article and, if
applicable, a check or cash in respect of any fractional interest in respect of
a share of Common Stock arising upon such conversion, as provided in Section
14.3.

     Each conversion shall be deemed to have been effected as to any such Note
(or portion thereof) on the date on which the requirements set forth above in
this Section 14.2 have been satisfied as to such Note (or portion thereof), and
the Person in whose name any certificate or

                                       54

<PAGE>   62

certificates for shares of Common Stock shall be issuable upon such conversion
shall be deemed to have become on said date the holder of record of the shares
represented thereby; provided, however, that any such surrender on any date
when the stock transfer books of the Company shall be closed shall constitute
the Person in whose name the certificates are to be issued as the record holder
thereof for all purposes on the next succeeding day on which such stock
transfer books are open, but such conversion shall be at the Conversion Price
in effect on the date upon which such Note shall be surrendered in accordance
with the applicable terms of the Indenture.

     Any Note or portion thereof surrendered for conversion during the period
from the close of business on the record date for any interest payment date to
the close of business on the Business Day next preceding the following interest
payment date must (unless such Note or portion thereof being converted shall
have been called for redemption on a redemption date, or tendered for
repurchase on a repurchase date, that occurs during the period from the close
of business on such record date to the close of business on the Business Day
next preceding the following interest payment date), be accompanied by payment,
in same day funds or other funds acceptable to the Company, of an amount equal
to the interest otherwise payable on such interest payment date on the
principal amount being converted; provided, however, that no such payment need
be made if there shall exist at the time of conversion a default in the payment
of interest on the Notes.  Except as provided above in this Section 14.2, no
payment or other adjustment shall be made for interest accrued on any Note
converted or for dividends on any shares issued upon the conversion of such
Note as provided in this Article.

     Upon the conversion of an interest in a Note in global form, the Trustee
(or other conversion agent appointed by the Company), or the Custodian at the
direction of the Trustee (or other conversion agent appointed by the Company),
shall make a notation on such Note in global form as to the reduction in the
principal amount represented thereby.  Upon the conversion of an interest in a
Note in definitive form, the Trustee (or other conversion agent appointed by
the Company), or the Custodian at the direction of the Trustee (or the
conversion agent appointed by the Company), shall authenticate and deliver to
the holder of the Note so surrendered, without charge to him, a new Note or
Notes in authorized denominations in an aggregate principal amount equal to the
unconverted portion of the surrendered Note.  The Company shall notify the
Trustee in writing of any conversions of Notes effected through any conversion
agent other than the Trustee.

     Section 14.3 Cash Payments or Rounding Up in Lieu of Fractional Shares. No
fractional shares of Common Stock or scrip representing fractional shares shall
be issued upon conversion of Notes.  If more than one Note shall be surrendered
for conversion at one time by the same holder, the number of full shares that
shall be issuable upon conversion shall be computed on the basis of the
aggregate principal amount of the Notes (or specified portions thereof to the
extent permitted thereby) so surrendered.  If any fractional share of stock
would be issuable upon the conversion of any Note or Notes, the Company shall,
at its option, make an adjustment and payment therefor in cash at the Closing
Price thereof on the last Business Day immediately preceding the day on which
the Notes (or specified portions thereof) are deemed to have been converted to
the holder of Notes or round up the number of shares to be received to the
nearest whole share.

                                       55

<PAGE>   63

     Section 14.4 Conversion Price.  The conversion price shall be as specified
in the form of Note (herein called the "Conversion Price") attached as Exhibit
A hereto, subject to adjustment as provided in this Article XIV.

     Section 14.5 Adjustment of Conversion Price.  The Conversion Price shall
be adjusted from time to time by the Company as follows:

              (a) In case the Company shall hereafter pay a dividend or make a
distribution to all holders of the outstanding Common Stock in shares of Common
Stock, the Conversion Price in effect at the opening of business on the date
following the date fixed for the determination of stockholders entitled to
receive such dividend or other distribution shall be reduced by multiplying
such Conversion Price by a fraction the numerator of which shall be the number
of shares of the Common Stock outstanding at the close of business on the date
fixed for such determination and the denominator of which shall be the sum of
such number of shares and the total number of shares constituting such dividend
or other distribution, such reduction, subject to the Company's rights under
Section 14.5(l), to become effective immediately after the opening of business
on the day following the date fixed for such determination.  The Company will
not pay any dividend or make any distribution on shares of Common Stock held in
the treasury of the Company.  If any dividend or distribution of the type
described in this Section 14.5(a) is declared but not so paid or made, the
Conversion Price shall again be adjusted to the Conversion Price that would
then be in effect if such dividend or distribution had not been declared.

              (b) In case the Company shall issue rights or warrants to all
holders of its outstanding shares of Common Stock entitling them (for a period
expiring within forty-five (45) days after the date fixed for determination of
stockholders entitled to receive such rights or warrants) to subscribe for or
purchase shares of Common Stock at a price per share less than the Current
Market Price (as defined below) on the date fixed for determination of
stockholders entitled to receive such rights or warrants, the Conversion Price
shall be adjusted so that the same shall equal the price determined by
multiplying the Conversion Price in effect immediately prior to the date fixed
for determination of stockholders entitled to receive such rights or warrants
by a fraction the numerator of which shall be the number of shares of Common
Stock outstanding at the close of business on the date fixed for determination
of stockholders entitled to receive such rights and warrants plus the number of
shares that the aggregate offering price of the total number of shares so
offered would purchase at such Current Market Price, and the denominator of
which shall be the number of shares of Common Stock outstanding on the date
fixed for determination of stockholders entitled to receive such rights and
warrants plus the total number of additional shares of Common Stock offered for
subscription or purchase.  Such adjustment shall be successively made whenever
any such rights and warrants are issued, and shall, subject to he Company's
rights under Section 14.5(l), become effective immediately after the opening of
business on the day following the date fixed for determination of stockholders
entitled to receive such rights or warrants.  To the extent that shares of
Common Stock are not delivered after the expiration of such rights or warrants,
the Conversion Price shall be readjusted to the Conversion Price that would
then be in effect had the adjustments made upon the issuance of such rights or
warrants been made on the basis of delivery of only the

                                       56

<PAGE>   64

number of shares of Common Stock actually delivered.  In the event that such
rights or warrants are not so issued, the Conversion Price shall again be
adjusted to be the Conversion Price that would then be in effect if such date
fixed for the determination of stockholders entitled to receive such rights or
warrants had not been fixed.  In determining whether any rights or warrants
entitle the holders to subscribe for or purchase shares of Common Stock at less
than such Current Market Price, and in determining the aggregate offering price
of such shares of Common Stock, there shall be taken into account any
consideration received by the Company for such rights or warrants, the value of
such consideration, if other than cash, to be determined by the Board of
Directors, whose determination shall be conclusive and described in a
resolution of the Board of Directors.

              (c) In case outstanding shares of Common Stock shall be
subdivided into a greater number of shares of Common Stock, the Conversion
Price in effect at the opening of business on the day following the day upon
which such subdivision becomes effective shall be proportionately reduced, and
conversely, in case outstanding shares of Common Stock shall be combined into a
smaller number of shares of Common Stock, the Conversion Price in effect at the
opening of business on the day following the day upon which such combination
becomes effective shall be proportionately increased, such reduction or
increase, as the case may be, to become effective immediately after the opening
of business on the day following the day upon which such subdivision or
combination becomes effective.

              (d) In case the Company shall, by dividend or otherwise,
distribute to all holders of its Common Stock shares of any class of capital
stock of the Company (other than any dividends or distributions to which
Section 14.5(a) applies) or evidences of its indebtedness or assets (including
securities, but excluding any rights or warrants referred to in Section
14.5(b), and excluding any dividend or distribution (x) paid exclusively in
cash or (y) referred to in Section 14.5(a) (any of the foregoing hereinafter in
this Section 14.5(d) called the "Securities")), then, in each such case (unless
the Company elects to reserve such Securities for distribution to the
Noteholders upon the conversion of the Notes so that any such holder converting
Notes will receive upon such conversion, in addition to the shares of Common
Stock to which such holder is entitled, the amount and kind of such Securities
which such holder would have received if such holder had converted its Notes
into Common Stock immediately prior to the Record Date (as defined in Section
14.5(h)) for such distribution of the Securities, the Conversion Price shall be
reduced so that the same shall be equal to the price determined by multiplying
the Conversion Price in effect on the Record Date with respect to such
distribution by a fraction the numerator of which shall be the Current Market
Price per share of the Common Stock on such Record Date less the fair market
value (as determined by the Board of Directors, whose determination shall be
conclusive, and described in a resolution of the Board of Directors) on the
Record Date of the portion of the Securities so distributed applicable to one
share of Common Stock and the denominator of which shall be the Current Market
Price per share of the Common Stock on such Record Date, such reduction,
subject to the Company's rights under Section 14.5(l), to become effective
immediately prior to the opening of business on the day following such Record
Date; provided, however, that in the event the then fair market value (as so
determined) of the portion of the Securities so distributed applicable to one
share of Common Stock is equal to or greater than the Current Market Price of
the Common Stock on such Record Date, in

                                       57

<PAGE>   65

lieu of the foregoing adjustment, adequate provision shall be made so that each
Noteholder shall have the right to receive upon conversion the amount of
Securities such holder would have received had such holder converted each Note
on such Record Date.  In the event that such dividend or distribution is not so
paid or made, the Conversion Price shall again be adjusted to be the Conversion
Price that would then be in effect if such dividend or distribution had not
been declared.  If the Board of Directors determines the fair market value of
any distribution for purposes of this Section 14.5(d) by reference to the
actual or when issued trading market for any securities, it must in doing so
consider the prices in such market over the same period used in computing the
Current Market Price of the Common Stock.

     Rights or warrants distributed by the Company to all holders of Common
Stock entitling the holders thereof to subscribe for or purchase shares of the
Company's capital stock (either initially or under certain circumstances),
which rights or warrants, until the occurrence of a specified event or events
("Trigger Event"): (i) are deemed to be transferred with such shares of Common
Stock; (ii) are not exercisable; and (iii) are also issued in respect of future
issuances of Common Stock, shall be deemed not to have been distributed for
purposes of this Section 14.5 (and no adjustment to the Conversion Price under
this Section 14.5 will be required) until the occurrence of the earliest
Trigger Event, whereupon such rights and warrants shall be deemed to have been
distributed and an appropriate adjustment (if any is required) to the
Conversion Price shall be made under this Section 14.5(d).  If any such right
or warrant, including any such existing rights or warrants distributed prior to
the date of this Indenture, are subject to events, upon the occurrence of which
such rights or warrants become exercisable to purchase different securities,
evidences of indebtedness or other assets, then the date of the occurrence of
any and each such event shall be deemed to be the date of distribution and
record date with respect to new rights or warrants with such rights (and a
termination or expiration of the existing rights or warrants without exercise
by any of the holders thereof).  In addition, in the event of any distribution
(or deemed distribution) of rights or warrants, or any Trigger Event or other
event (of the type described in the preceding sentence) with respect thereto
that was counted for purposes of calculating a distribution amount for which an
adjustment to the Conversion Price under this Section 14.5 was made, (1) in the
case of any such rights or warrants that shall all have been redeemed or
repurchased without exercise by any holders thereof, the Conversion Price shall
be readjusted upon such final redemption or repurchase to give effect to such
distribution or Trigger Event, as the case may be, as though it were a cash
distribution, equal to the per share redemption or repurchase price received by
a holder or holders of Common Stock with respect to such rights or warrants
(assuming such holder had retained such rights or warrants), made to all
holders of Common Stock as of the date of such redemption or repurchase, and
(2) in the case of such rights or warrants that shall have expired or been
terminated without exercise by any holders thereof, the Conversion Price shall
be readjusted as if such rights and warrants had not been issued.

     For purposes of this Section 14.5(d) and Sections 14.5(a) and (b), any
dividend or distribution to which this Section 14.5(d) is applicable that also
includes shares of Common Stock, or rights or warrants to subscribe for or
purchase shares of Common Stock (or both), shall be deemed instead to be (1) a
dividend or distribution of the evidences of indebtedness, assets or shares of

                                       58

<PAGE>   66

capital stock other than such shares of Common Stock or rights or warrants (and
any Conversion Price reduction required by this Section 14.5(d) with respect to
such dividend or distribution shall then be made) immediately followed by (2) a
dividend or distribution of such shares of Common Stock or such rights or
warrants (and any further Conversion Price reduction required by Sections
14.5(a) and (b) with respect to such dividend or distribution shall then be
made), except (A) the Record Date of such dividend or distribution shall be
substituted as "the date fixed for the determination of stockholders entitled
to receive such dividend or other distribution" and "the date fixed for such
determination" within the meaning of Sections 14.5(a) and (b), and (B) any
shares of Common Stock included in such dividend or distribution shall not be
deemed "outstanding at the close of business on the date fixed for such
determination" within the meaning of Section 14.5(a).

              (e) In case the Company shall, by dividend or otherwise,
distribute to all holders of its Common Stock cash (excluding (x) any quarterly
cash dividend on the Common Stock to the extent the aggregate cash dividend per
share of Common Stock in any fiscal quarter does not exceed the greater of (A)
the amount per share of Common Stock of the next preceding quarterly cash
dividend on the Common Stock to the extent that such preceding quarterly
dividend did not require any adjustment of the Conversion Price pursuant to
this Section 14.5(e) (as adjusted to reflect subdivisions, or combinations of
the Common Stock), and (B) 3.75% of the arithmetic average of the Closing Price
(determined as set forth in Section 14.5(h)) during the ten Trading Days (as
defined in Section 14.5(h)) immediately prior to the date of declaration of
such dividend, and (y) any dividend or distribution in connection with the
liquidation, dissolution or winding up of the Company, whether voluntary or
involuntary), then, in such case, the Conversion Price shall be reduced so that
the same shall equal the price determined by multiplying the Conversion Price
in effect immediately prior to the close of business on such record date by a
fraction the numerator of which shall be the Current Market Price of the Common
Stock on the record date less the amount of cash so distributed (and not
excluded as provided above) applicable to one share of Common Stock and the
denominator of which shall be such Current Market Price of the Common Stock,
such reduction, subject to the Company's rights under Section 14.5(l), to be
effective immediately prior to the opening of business on the day following the
record date; provided, however, that in the event the portion of the cash so
distributed applicable to one share of Common Stock is equal to or greater than
the Current Market Price of the Common Stock on the record date, in lieu of the
foregoing adjustment, adequate provision shall be made so that each Noteholder
shall have the right to receive upon conversion the amount of cash such holder
would have received had such holder converted each Note on the record date.  In
the event that such dividend or distribution is not so paid or made, the
Conversion Price shall again be adjusted to be the Conversion Price that would
then be in effect if such dividend or distribution had not been declared.  If
any adjustment is required to be made as set forth in this Section 14.5(e) as a
result of a distribution that is a quarterly dividend, such adjustment shall be
based upon the amount by which such distribution exceeds the amount of the
quarterly cash dividend permitted to be excluded pursuant hereto.  If an
adjustment is required to be made as set forth in this Section 14.5(e) above as
a result of a distribution that is not a quarterly dividend, such adjustment
shall be based upon the full amount of the distribution.

                                       59

<PAGE>   67

              (f) In case a tender or exchange offer made by the Company or any
Subsidiary for all or any portion of the Common Stock (other than any tender
offer or exchange offer that is made and consummated for any and all shares of
the Common Stock) shall expire and such tender or exchange offer (as in effect
upon the expiration thereof) shall require the payment to stockholders of
consideration per share of Common Stock having a fair market value (as
determined by the Board of Directors, whose determination shall be conclusive
and described in a resolution of the Board of Directors) that as of the last
time (the "Expiration Time") tenders or exchanges may be made pursuant to such
tender or exchange offer (as it may be amended) exceeds the Current Market
Price of the Common Stock on the Trading Day next succeeding the Expiration
Time, the Conversion Price shall be reduced so that the same shall equal the
price determined by multiplying the Conversion Price in effect immediately
prior to the Expiration Time by a fraction the numerator of which shall be the
number of shares of Common Stock outstanding (including any tendered or
exchanged shares) on the Expiration Time multiplied by the Current Market Price
of the Common Stock on the Trading Day next succeeding the Expiration Time and
the denominator of which shall be the sum of (x) the fair market value
(determined as aforesaid) of the aggregate consideration payable to
stockholders based on the acceptance (up to any maximum specified in the terms
of the tender or exchange offer) of all shares validly tendered or exchanged
and not withdrawn as of the Expiration Time (the shares deemed so accepted, up
to any such maximum, being referred to as the "Purchased Shares") and (y) the
product of the number of shares of Common Stock outstanding (less any Purchased
Shares) on the Expiration Time and the Current Market Price of the Common Stock
on the Trading Day next succeeding the Expiration Time, such reduction to
become effective immediately prior to the opening of business on the second
Trading Day following the Expiration Time.  In the event that the Company is
obligated to purchase shares pursuant to any such tender or exchange offer, but
the Company is permanently prevented by applicable law from effecting any such
purchases or all such purchases are rescinded, the Conversion Price shall again
be adjusted to be the Conversion Price that would then be in effect if such
tender or exchange offer had not been made.

              (g) In the case of a tender or exchange offer made by a Person
other than the Company or any Subsidiary (a) for an amount that increases the
offeror's ownership of Common Stock to more than twenty-five percent (25%) of
the Common Stock outstanding (provided that in the case of any offeror whose
ownership percentage of the Common Stock is 15% or more prior to the
commencement of the tender offer or exchange offer, this requirement would not
be met unless the tender offer or exchange offer would increase the offeror's
ownership of Common Stock by more than 10% of the total shares of Common Stock
outstanding), (b) that involves the payment by such Person of consideration per
share of Common Stock having a fair market value (as determined by the Board of
Directors, whose determination shall be conclusive, and described in a
resolution of the Board of Directors) at the last time (the "Offer Expiration
Time") tenders or exchanges may be made pursuant to such tender or exchange
offer (as it shall have been amended) that exceeds the Current Market Price of
the Common Stock on the Trading Day next succeeding the Offer Expiration Time,
(c) in which, as of the Offer Expiration Time, the Board of Directors is not
recommending rejection of the offer and (d) in which the average of the daily
Closing Price per share of the Common Stock for the 10 consecutive Trading Days
ending ten Trading Days prior to the public announcement of

                                       60

<PAGE>   68

the tender offer or exchange offer (the "Pre-Offer Reference Price") exceeds
105% of the average of the daily Closing Price per share of the Common Stock
for the ten Trading Days commencing ten Trading Days following the Offer
Expiration Time (the "Post- Offer Reference Price") the Conversion Price shall
be reduced so that the same shall equal the price determined by from the
Conversion Price in effect immediately prior to the Offer Expiration Time an
amount determined by multiplying the Conversion Price in effect immediately
prior to the Offer Expiration Time by a fraction, the numerator of which shall
be (x) the difference between the Pre-Offer Reference Price and the Post-Offer
Reference Price multiplied by (y) the number of shares of Common Stock
outstanding immediately prior to the Offer Expiration Time (less all shares
validly tendered or exchanged and not withdrawn as of the Offer Expiration
Time) and the denominator of which shall be the product of the Pre-Offer
Reference Price and the number of shares of Common Stock outstanding
immediately prior to the Offer Expiration Time (including any tendered or
exchanged shares).  Any reduction in the Conversion Price provided for in this
Section 14.5(g) shall become effective retroactive to immediately prior to the
opening of business on the day following the Offer Expiration Time.  In the
event that such Person is obligated to purchase shares pursuant to any such
tender or exchange offer, but such Person is permanently prevented by
applicable law from effecting any such purchases or all such purchases are
rescinded, the Conversion Price shall again be adjusted to be the Conversion
Price which would then be in effect if such tender or exchange offer had not
been made. Notwithstanding the foregoing, the adjustment described in this
Section 14.5(g) shall not be made if, as of the Offer Expiration Time, the
offering documents with respect to such offer disclose a plan or intention to
cause the Company to engage in any transaction described in Article XI.

              (h) For purposes of this Section 14.5, the following terms shall
have the meaning indicated:


                 (1)  "Closing Price" with respect to any securities on any day
shall mean the closing sale price, regular way, on such day or, in case no such
sale takes place on such day, the average of the reported closing bid and asked
prices, regular way, in each case as quoted on the Nasdaq National Market or,
if such security is not quoted or listed or admitted to trading on such Nasdaq
National Market, on the principal national security exchange or quotation
system on which such security is quoted or listed or admitted to trading or, if
not quoted or listed or admitted to trading on any national securities exchange
or quotation system, the average of the closing bid and asked prices of such
security on the over-the-counter market on the day in question as reported by
the National Quotation Bureau Incorporated, or a similar generally accepted
reporting service, or if not so available, in such manner as furnished by any
New York Stock Exchange member firm selected from time to time by the Board of
Directors for that purpose, or a price determined in good faith by the Board of
Directors or, to the extent permitted by applicable law, a duly authorized
committee thereof, whose determination shall be conclusive.


                 (2)  "Current Market Price" shall mean the average of the
daily Closing Prices per share of Common Stock for the ten consecutive Trading
Days immediately prior to the date in question.  The Current Market Price shall
be appropriately adjusted to take into account the

                                       61

<PAGE>   69

occurrence during the period commencing on the first of such Trading Days
during such 10 Trading Day period and ending on the date in question of any
other events that would require an adjustment of the Conversion Price pursuant
to Section 14.5 of this Indenture.


                 (3)  "fair market value" shall mean the amount which a willing
buyer would pay a willing seller in an arm's-length transaction.


                 (4)  "Record Date" shall mean, with respect to any dividend,
distribution or other transaction or event in which the holders of Common Stock
have the right to receive any cash, securities or other property or in which
the Common Stock (or other applicable security) is exchanged for or converted
into any combination of cash, securities or other property, the date fixed for
determination of stockholders entitled to receive such cash, securities or
other property (whether such date is fixed by the Board of Directors or by
statute, contract or otherwise).


                 (5)  "Trading Day" shall mean (x) if the applicable security
is quoted on the Nasdaq National Market, a day on which trades may be made
thereon or (y) if the applicable security is listed or admitted for trading on
the New York Stock Exchange or another national security exchange, a day on
which the New York Stock Exchange or another national security exchange is open
for business or (z) if the applicable security is not so listed, admitted for
trading or quoted, any day other than a Saturday or Sunday or a day on which
banking institutions in the State of New York are authorized or obligated by
law or executive order to close.

              (i) The Company may make such reductions in the Conversion Price,
in addition to those required by Sections 14.5(a), (b), (c), (d), (e), (f) or
(g) as the Board of Directors considers to be advisable to avoid or diminish
any income tax to holders of Common Stock or rights to purchase Common Stock
resulting from any dividend or distribution of stock (or rights to acquire
stock) or from any event treated as such for income tax purposes.

     To the extent permitted by applicable law, the Company from time to time
may reduce the Conversion Price by any amount for any period of time if the
period is at least twenty (20) days, the reduction is irrevocable during the
period and the Board of Directors shall have made a determination that such
reduction would be in the best interests of the Company, which determination
shall be conclusive. Whenever the Conversion Price is reduced pursuant to the
preceding sentence, the Company shall mail to holders of record of the Notes a
notice of the reduction at least fifteen (15) days prior to the date the
reduced Conversion Price takes effect, and such notice shall state the reduced
Conversion Price and the period during which it will be in effect.

              (j) No adjustment in the Conversion Price shall be required
unless such adjustment would require an increase or decrease of at least one
percent (1%) in such price; provided, however, that any adjustments that by
reason of this Section 14.5(j) are not required to be made shall be carried
forward and taken into account in any subsequent adjustment.  All calculations
under this Article XIV shall be made by the Company and shall be made to the
nearest tenth of one cent or to the nearest one-hundredth (1/100) of a share,
as the case may be.  No adjustment need be

                                       62

<PAGE>   70

made for rights to purchase Common Stock pursuant to a Company plan for
reinvestment of dividends or interest.  To the extent the Notes become
convertible into cash, assets, property or securities (other than capital stock
of the Company), no adjustment need be made thereafter as to the cash, assets,
property or such securities. Interest will not accrue on the cash.

              (k) Whenever the Conversion Price is adjusted as herein provided,
the Company shall promptly file with the Trustee and any conversion agent other
than the Trustee an Officers' Certificate setting forth the Conversion Price
after such adjustment and setting forth a brief statement of the facts
requiring such adjustment. Promptly after delivery of such certificate, the
Company shall prepare a notice of such adjustment of the Conversion Price
setting forth the adjusted Conversion Price and the date on which each
adjustment becomes effective and shall mail such notice of such adjustment of
the Conversion Price to the holder of each Note at his last address appearing
on the Note register provided for in Section 2.5 of this Indenture, within
twenty (20) days after execution thereof.  Failure to deliver such notice shall
not affect the legality or validity of any such adjustment.

              (l) In any case in which this Section 14.5 provides that an
adjustment shall become effective immediately after a record date for an event
or any other date specified herein, occurring prior to the event, that is the
basis for such adjustment, the Company may defer until the occurrence of such
event (i) issuing to the holder of any Note converted after such record or
other specified date or other date and before the occurrence of such event the
additional shares of Common Stock issuable upon such conversion by reason of
the adjustment required by such event over and above the Common Stock issuable
upon such conversion before giving effect to such adjustment and (ii) paying to
such holder any amount in cash or additional shares in lieu of any fraction
pursuant to Section 14.3.

              (m) For purposes of this Section 14.5, the number of shares of
Common Stock at any time outstanding shall not include shares held in the
treasury of the Company but shall include shares issuable in respect of scrip
certificates issued in lieu of fractions of shares of Common Stock.  The
Company will not pay any dividend or make any distribution on shares of Common
Stock held in the treasury of the Company.

     Section 14.6 Effect of Reclassification, Consolidation, Merger or Sale. If
any of the following events occur, namely (i) any reclassification or change of
the outstanding shares of Common Stock (other than a subdivision or combination
to which Section 14.5(c) applies), (ii) any consolidation, merger or
combination of the Company with another Person as a result of which holders of
Common Stock shall be entitled to receive stock, other securities or other
property or assets (including cash) with respect to or in exchange for such
Common Stock, or (iii) any sale or conveyance of all or substantially all of
the properties and assets of the Company to any other Person as a result of
which holders of Common Stock shall be entitled to receive stock, other
securities or other property or assets (including cash) with respect to or in
exchange for such Common Stock, then the Company or the successor or purchasing
Person, as the case may be, shall execute with the Trustee a supplemental
indenture (which shall comply with the Trust Indenture Act as in force at the
date of execution of each supplemental indenture) providing that such Note
shall be convertible into

                                       63

<PAGE>   71

the kind and amount of shares of stock, other securities or other property or
assets (including cash) receivable upon such reclassification, change,
consolidation, merger, combination, sale or conveyance by a holder of a number
of shares of Common Stock issuable upon conversion of such Notes (assuming, for
such purposes, a sufficient number of authorized shares of Common Stock
available to convert all such Notes) immediately prior to such
reclassification, change, consolidation, merger, combination, sale or
conveyance assuming such holder of Common Stock did not exercise his rights of
election, if any, as to the kind or amount of securities, cash or other
property receivable upon such reclassification, change, consolidation, merger,
combination, sale or conveyance provided that, if the kind or amount of stock,
other securities or other property or assets (including cash) receivable upon
such reclassification, change, consolidation, merger, combination, sale or
conveyance  is not the same for each share of Common Stock in respect of which
such rights of election shall not have been exercised ("non-electing share"),
then for the purposes of this Section 14.6 the kind and amount of securities,
cash or other property receivable upon such reclassification, change,
consolidation, merger, combination, sale or conveyance for each non-electing
share shall be deemed to be the kind and amount so receivable per share by a
plurality of the non-electing shares.  Such supplemental indenture shall
provide for adjustments which shall be as nearly equivalent as may be
practicable to the adjustments provided for in this Article.

     The Company shall cause notice of the execution of such supplemental
indenture to be mailed to each holder of Notes, at its address appearing on the
Note register provided for in Section 2.5 of this Indenture, within twenty (20)
days after execution thereof. Failure to deliver such notice shall not affect
the legality or validity of such supplemental indenture.

     The above provisions of this Section shall similarly apply to successive
reclassifications, changes, consolidations, mergers, combinations, sales and
conveyances.

     If this Section 14.6 applies to any event or occurrence, Section 14.5
shall not apply.

     Section 14.7 Taxes on Shares Issued.  The issue of stock certificates on
conversions of Notes shall be made without charge to the converting Noteholder
for any tax in respect of the issue thereof.  The Company shall not, however,
be required to pay any tax which may be payable in respect of any transfer
involved in the issue and delivery of stock in any name other than that of the
holder of any Note converted, and the Company shall not be required to issue or
deliver any such stock certificate unless and until the Person or Persons
requesting the issue thereof shall have paid to the Company the amount of such
tax or shall have established to the satisfaction of the Company that such tax
has been paid.

     Section 14.8 Reservation of Shares; Shares to Be Fully Paid; Compliance
with Governmental Requirements; Listing of Common Stock. The Company shall
provide, free from preemptive rights, out of its authorized but unissued shares
or shares held in treasury, sufficient shares of Common Stock to provide for
the conversion of the Notes from time to time as such Notes are presented for
conversion.

                                       64

<PAGE>   72

     Before taking any action which would cause an adjustment reducing the
Conversion Price below the then par value, if any, of the shares of Common
Stock issuable upon conversion of the Notes, the Company will take all
corporate action which may, in the opinion of its counsel, be necessary in
order that the Company may validly and legally issue shares of such Common
Stock at such adjusted Conversion Price.

     The Company covenants that all shares of Common Stock which may be issued
upon conversion of Notes will upon issue be fully paid and non-assessable by
the Company and free from all taxes, liens and charges with respect to the
issue thereof.

     The Company covenants that, subject to the terms of this Indenture, the
Registration Rights Agreement and the compliance by the holders of the Note to
be converted with applicable law, if any shares of Common Stock to be provided
for the purpose of conversion of Notes hereunder require registration with or
approval of any governmental authority under any federal or state law before
such shares may be validly issued upon conversion, the Company will in good
faith and as expeditiously as possible endeavor to secure such registration or
approval, as the case may be.

     The Company further covenants that, subject to the terms of this
Indenture, the Registration Rights Agreement and compliance by the holders of
the Note with applicable law, if at any time the Common Stock shall be listed
on the Nasdaq National Market or any other national securities exchange or
automated quotation system, the Company will, if permitted by the rules of such
exchange or automated quotation system, list and keep listed, so long as the
Common Stock shall be so listed on such exchange or automated quotation system,
all Common Stock issuable upon conversion of the Note; provided, however, that,
if the rules of such exchange or automated quotation system permit the Company
to defer the listing of such Common Stock until the first conversion of the
Notes into Common Stock in accordance with the provisions of this Indenture,
the Company covenants to list such Common Stock issuable upon conversion of the
Notes in accordance with the requirements of such exchange or automated
quotation system at such time.

     Section 14.9 Responsibility of Trustee.  The Trustee and any other
conversion agent shall not at any time be under any duty or responsibility to
any holder of Notes to determine the Conversion Price or whether any facts
exist which may require any adjustment of the Conversion Price, or with respect
to the nature or extent or calculation of any such adjustment when made, or
with respect to the method employed, or herein or in any supplemental indenture
provided to be employed, in making the same.  The Trustee and any other
conversion agent shall not be accountable with respect to the validity or value
(or the kind or amount) of any shares of Common Stock, or of any securities or
property, which may at any time be issued or delivered upon the conversion of
any Note; and the Trustee and any other conversion agent make no
representations with respect thereto.  Neither the Trustee nor any conversion
agent shall be responsible for any failure of the Company to issue, transfer or
deliver any shares of Common Stock or stock certificates or other securities or
property or cash upon the surrender of any Note for the purpose of conversion
or to comply with any of the duties, responsibilities or covenants of the
Company contained in this Article.  Without limiting the generality of the
foregoing, neither the Trustee nor any conversion agent shall be under

                                       65

<PAGE>   73

any responsibility to determine the correctness of any provisions contained in
any supplemental indenture entered into pursuant to Section 14.6 relating
either to the kind or amount of shares of stock or securities or property
(including cash) receivable by Noteholders upon the conversion of their Notes
after any event referred to in such Section 14.6 or to any adjustment to be
made with respect thereto, but, subject to the provisions of Section 7.1, may
accept as conclusive evidence of the correctness of any such provisions, and
shall be protected in relying upon, the Officers' Certificate (which the
Company shall be obligated to file with the Trustee prior to the execution of
any such supplemental indenture) with respect thereto.

     Section 14.10 Notice to Holders Prior to Certain Actions.  In case:


              (a) the Company shall declare a dividend (or any other
distribution) on its Common Stock that would require an adjustment in the
Conversion Price pursuant to Section 14.5; or

              (b) the Company shall authorize the granting to the holders of
all or substantially all of its Common Stock of rights or warrants to subscribe
for or purchase any share of any class or any other rights or warrants; or

              (c) of any reclassification or reorganization of the Common Stock
of the Company (other than a subdivision or combination of its outstanding
Common Stock, or a change in par value, or from par value to no par value, or
from no par value to par value), or of any consolidation or merger to which the
Company is a party and for which approval of any stockholders of the Company is
required, or of the sale or transfer of all or substantially all of the assets
of the Company or any Significant Subsidiary; or

              (d) of the voluntary or involuntary dissolution, liquidation or
winding up of the Company or any Significant Subsidiary;

the Company shall cause to be filed with the Trustee and to be mailed to each
holder of Notes at his address appearing on the Note register provided for in
Section 2.5 of this Indenture, as promptly as possible but in any event at
least ten (10) days prior to the applicable date hereinafter specified, a
notice stating (x) the date on which a record is to be taken for the purpose of
such dividend, distribution or rights or warrants, or, if a record is not to be
taken, the date as of which the holders of Common Stock of record to be
entitled to such dividend, distribution or rights are to be determined, or (y)
the date on which such reclassification, consolidation, merger, sale, transfer,
dissolution, liquidation or winding up is expected to become effective or
occur, and the date as of which it is expected that holders of Common Stock of
record shall be entitled to exchange their Common Stock for securities or other
property deliverable upon such reclassification, consolidation, merger, sale,
transfer, dissolution, liquidation or winding up.  Failure to give such notice,
or any defect therein, shall not affect the legality or validity of such
dividend, distribution, reclassification, consolidation, merger, sale,
transfer, dissolution, liquidation or winding up.

                                       66

<PAGE>   74

                                   ARTICLE XV

                            MISCELLANEOUS PROVISIONS

     Section 15.1 Provisions Binding on Company's Successors.  All the
covenants, stipulations, promises and agreements by the Company contained in
this Indenture shall bind its successors and assigns whether so expressed or
not.

     Section 15.2 Official Acts by Successor Corporation.  Any act or
proceeding by any provision of this Indenture authorized or required to be done
or performed by any board, committee or officer of the Company shall and may be
done and performed with like force and effect by the like board, committee or
officer of any Person that shall at the time be the lawful sole successor of
the Company.

     Section 15.3 Addresses for Notices, Etc.  Any notice or demand which by
any provision of this Indenture is required or permitted to be given or served
by the Trustee or by the holders of Notes on the Company shall be deemed to
have been sufficiently given or made, for all purposes, if given or served by
being deposited postage prepaid by registered or certified mail in a post
office letter box addressed (until another address is filed by the Company with
the Trustee) to Nextel Communications, Inc., 2001 Edmund Halley Drive, Reston,
Virginia 20191, Attention:  Secretary.  Any notice, direction, request or
demand hereunder to or upon the Trustee shall be deemed to have been
sufficiently given or made, for all purposes, if given or served by being
deposited, postage prepaid, by registered or certified mail in a post office
letter box addressed to the Corporate Trust Office, which office is, at the
date as of which this Indenture is dated, located at 311 West Monroe Street,
Chicago, Illinois 60606, Attention:  Indenture Trust.

     The Trustee, by notice to the Company, may designate additional or
different addresses for subsequent notices or communications.

     Any notice or communication mailed to a Noteholder shall be mailed to him
by first class mail, postage prepaid, at his address as it appears on the Note
register and shall be sufficiently given to him if so mailed within the time
prescribed.  In respect of notices pursuant to Sections 3.1 and 3.5, in
addition to notices sent by mail as set forth in the first sentence of this
paragraph, the Company shall make a public announcement of the information
contained in such notice by release made to Reuters Economic Services and
Bloomberg Business News.

     Failure to mail a notice or communication to a Noteholder or any defect in
it shall not affect its sufficiency with respect to other Noteholders.  If a
notice or communication is mailed in the manner provided above, it is duly
given, whether or not the addressee receives it.

     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 Noteholders shall be filed with the

                                       67

<PAGE>   75

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 15.4 Governing Law.  This Indenture and each Note shall be deemed
to be a contract made under the laws of the State of New York, and for all
purposes shall be construed in accordance with the laws of the State of New
York without giving effect to any conflicts or choice of law principles which
otherwise might be applicable.  The Trustee, the Company and the Noteholders
agree to submit to the jurisdiction of the courts of the state of New York in
any action or proceeding arising out of or relating to this Indenture or the
Notes.

     Section 15.5 Evidence of Compliance with Conditions Precedent;
Certificates to Trustee.  Upon any application or demand by the Company to the
Trustee to take any action under any of the provisions of this Indenture, the
Company shall furnish to the Trustee an Officers' Certificate stating that all
conditions precedent, if any, provided for in this Indenture relating to the
proposed action have been complied with, and an Opinion of Counsel stating
that, in the opinion of such counsel, all such conditions precedent have been
complied with.

     Each certificate or opinion provided for in this Indenture and delivered
to the Trustee with respect to compliance with a condition or covenant provided
for in this Indenture shall include: (1) a statement that the person making
such certificate or opinion has read such covenant or condition; (2) a brief
statement as to the nature and scope of the examination or investigation upon
which the statement or opinion contained in such certificate or opinion is
based; (3) a statement that, in the opinion of such person, 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 or not, in the opinion of such
person, such condition or covenant has been complied with, subject to customary
reliance on factual certificates by the Company and to qualifications and
limitations customary for such opinions.

     Section 15.6 Legal Holidays.  In any case in which the date of maturity of
interest on or principal of the Notes or the date fixed for redemption of any
Note will not be a Business Day, then payment of such interest on or principal
of the Notes 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 date
of maturity or the date fixed for redemption, and no interest shall accrue for
the period from and after such date.

     Section 15.7 Trust Indenture Act.  This Indenture is hereby made subject
to, and shall be governed by, the provisions of the Trust Indenture Act
required to be part of and to govern indentures qualified under the Trust
Indenture Act; provided, however, that, unless otherwise required by law,
notwithstanding the foregoing, this Indenture and the Notes issued hereunder
shall

                                       68

<PAGE>   76

not be subject to the provisions of subsections (a)(1), (a)(2), and (a)(3) of
Section 314 of the Trust Indenture Act as now in effect or as hereafter amended
or modified; provided further that this Section 15.7 shall not require this
Indenture or the Trustee to be qualified under the Trust Indenture Act prior to
the time such qualification is in fact required under the terms of the Trust
Indenture Act, nor shall it constitute any admission or acknowledgment by any
party to the Indenture that any such qualification is required prior to the
time such qualification is in fact required under the terms of the Trust
Indenture Act.  If any provision hereof limits, qualifies or conflicts with
another provision hereof which is required to be included in an indenture
qualified under the Trust Indenture Act, such required provision shall control.

     Section 15.8 No Security Interest Created.  Nothing in this Indenture or
in the Notes, expressed or implied, shall be construed to constitute a security
interest under the Uniform Commercial Code or any other legislation, as now or
hereafter enacted and in effect, in any jurisdiction in which property of the
Company or its subsidiaries is located.

     Section 15.9 Benefits of Indenture.  Nothing in this Indenture or in the
Notes, express or implied, shall give to any Person, other than the parties
hereto, any paying agent, any authenticating agent, any Note registrar and
their successors hereunder and the holders of Notes, any benefit or any legal
or equitable right, remedy or claim under this Indenture.

     Section 15.10 Table of Contents, Headings, Etc.  The table of contents and
the titles and headings of the articles and sections of this Indenture have
been inserted for convenience of reference only, are not to be considered a
part hereof, and shall in no way modify or restrict any of the terms or
provisions hereof.

     Section 15.11 Authenticating Agent.  The Trustee may appoint an
authenticating agent that shall be authorized to act on its behalf, and subject
to its direction, in the authentication and delivery of Notes in connection
with the original issuance thereof and transfers and exchanges of Notes
hereunder, including under Sections 2.4, 2.5, 2.6, 2.7, 3.3 and 3.5, as fully
to all intents and purposes as though the authenticating agent had been
expressly authorized by this Indenture and those Sections to authenticate and
deliver Notes.  For all purposes of this Indenture, the authentication and
delivery of Notes by the authenticating agent shall be deemed to be
authentication and delivery of such Notes "by the Trustee" and a certificate of
authentication executed on behalf of the Trustee by an authenticating agent
shall be deemed to satisfy any requirement hereunder or in the Notes for the
Trustee's certificate of authentication.  Such authenticating agent shall at
all times be a Person eligible to serve as trustee hereunder pursuant to
Section 7.11.

     Any corporation into which any authenticating agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, consolidation or conversion to which any authenticating agent
shall be a party, or any corporation succeeding to the corporate trust business
of any authenticating agent, shall be the successor of the authenticating agent
hereunder, if such successor corporation is otherwise eligible under this
Section 15.11, without the

                                       69

<PAGE>   77

execution or filing of any paper or any further act on the part of the parties
hereto or the authenticating agent or such successor corporation.

     Any authenticating agent may at any time resign by giving written notice
of resignation to the Trustee and to the Company.  The Trustee may at any time
terminate the agency of any authenticating agent by giving written notice of
termination to 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
any authenticating agent shall cease to be eligible under this Section, the
Trustee shall either promptly appoint a successor authenticating agent or
itself assume the duties and obligations of the former authenticating agent
under this Indenture and, upon such appointment of a successor authenticating
agent, if made, shall give written notice of such appointment of a successor
authenticating agent to the Company and shall mail notice of such appointment
of a successor authenticating agent to all holders of Notes as the names and
addresses of such holders appear on the Note register.

     The Company agrees to pay to the authenticating agent from time to time
such reasonable compensation for its services as shall be agreed upon in
writing between the Company and the authenticating agent.

     The provisions of Sections 7.2, 7.3, 7.4, 8.3 and this Section 15.11 shall
be applicable to any authenticating agent.

     Section 15.12 Execution in Counterparts.  This Indenture may be executed
in any number of counterparts, each of which shall be an original, but such
counterparts shall together constitute but one and the same instrument.

     Harris Trust and Savings Bank hereby accepts the trusts in this Indenture
declared and provided, upon the terms and conditions herein above set forth.

                                       70

<PAGE>   78

     IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be
duly executed.



                                        NEXTEL COMMUNICATIONS, INC.




                                        By:  THOMAS J. SIDMAN
                                           -------------------------------------
                                             Name:  Thomas J. Sidman
                                             Title: Vice President




                                        HARRIS TRUST AND SAVINGS BANK,
                                        as Trustee




                                        By: KEVIN HEALEY
                                           -------------------------------------
                                             Name:  Kevin Healey
                                                  ------------------------------
                                             Title: Senior Vice President
                                                   -----------------------------


<PAGE>   79

                                   EXHIBIT A


[For Global Note only:  UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW
YORK) (THE "DEPOSITARY," WHICH TERM INCLUDES ANY SUCCESSOR DEPOSITARY FOR THE
CERTIFICATES) TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER,
EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF
CEDE & CO. OR IN SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE
OF THE DEPOSITARY AND ANY PAYMENT HEREIN IS MADE TO CEDE & CO. (OR TO SUCH
OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITARY), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE
BY OR TO ANY PERSON IS WRONGFUL INSOFAR AS THE REGISTERED OWNER HEREOF, CEDE &
CO., HAS AN INTEREST HEREIN.]

THE NOTE EVIDENCED HEREBY HAS NOT BEEN REGISTERED UNDER THE UNITED STATES
SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE
SECURITIES LAWS, AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED
STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF, UNITED STATES PERSONS EXCEPT AS
SET FORTH IN THE FOLLOWING SENTENCE.  BY ITS ACQUISITION HEREOF, THE HOLDER (1)
REPRESENTS THAT (A) IT IS A "QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE
144A UNDER THE SECURITIES ACT) OR (B) IT IS AN INSTITUTIONAL "ACCREDITED
INVESTOR" (AS DEFINED IN RULE 501(A)(1), (2), (3) OR (7) UNDER THE SECURITIES
ACT) ("INSTITUTIONAL ACCREDITED INVESTOR"); (2) AGREES THAT IT WILL NOT, PRIOR
TO EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THE NOTE EVIDENCED
HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION),
RESELL OR OTHERWISE TRANSFER THE NOTE EVIDENCED HEREBY OR THE COMMON STOCK
ISSUABLE UPON CONVERSION OF SUCH NOTE EXCEPT (A) TO NEXTEL COMMUNICATIONS, INC.
OR ANY SUBSIDIARY THEREOF, (B) TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE
WITH RULE 144A UNDER THE SECURITIES ACT, (C) TO AN INSTITUTIONAL ACCREDITED
INVESTOR THAT, PRIOR TO SUCH TRANSFER, FURNISHES TO HARRIS TRUST AND SAVINGS
BANK, AS TRUSTEE (OR A SUCCESSOR TRUSTEE), A SIGNED LETTER CONTAINING CERTAIN
REPRESENTATIONS AND AGREEMENTS RELATING TO THE RESTRICTIONS ON TRANSFER OF THE
NOTE EVIDENCED HEREBY (THE FORM OF WHICH LETTER CAN BE OBTAINED FROM THE
TRUSTEE), (D) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144
UNDER THE SECURITIES ACT (IF AVAILABLE) OR (E) PURSUANT TO A REGISTRATION
STATEMENT WHICH HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT (AND WHICH
CONTINUES TO BE EFFECTIVE AT THE TIME OF SUCH TRANSFER); (3) PRIOR TO SUCH
TRANSFER (OTHER THAN A TRANSFER PURSUANT TO CLAUSE (2)(E) ABOVE), IT WILL
FURNISH TO HARRIS TRUST AND SAVINGS BANK,

                                      A-1

<PAGE>   80

AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS APPLICABLE), SUCH CERTIFICATIONS, LEGAL
OPINIONS OR OTHER INFORMATION AS IT MAY REASONABLY REQUIRE TO CONFIRM THAT SUCH
TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT
SUBJECT TO THE REGISTRATION REQUIREMENTS OF, THE SECURITIES ACT AND (4) AGREES
THAT IT WILL DELIVER TO EACH PERSON TO WHOM THE NOTE EVIDENCED HEREBY IS
TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND.  IN CONNECTION
WITH ANY TRANSFER OF THE NOTE EVIDENCED HEREBY PRIOR TO THE EXPIRATION OF THE
HOLDING PERIOD APPLICABLE TO SALES OF THE NOTE EVIDENCED HEREBY UNDER RULE
144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION), THE HOLDER MUST
CHECK THE APPROPRIATE BOX SET FORTH ON THE REVERSE HEREOF RELATING TO THE
MANNER OF SUCH TRANSFER AND SUBMIT THIS CERTIFICATE TO HARRIS TRUST AND SAVINGS
BANK, AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS APPLICABLE).  IF THE PROPOSED
TRANSFEREE IS AN INSTITUTIONAL ACCREDITED INVESTOR, THE HOLDER MUST, PRIOR TO
SUCH TRANSFER, FURNISH TO HARRIS TRUST AND SAVINGS BANK, AS TRUSTEE (OR A
SUCCESSOR TRUSTEE, AS APPLICABLE), SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER
INFORMATION AS SUCH TRUSTEE MAY REASONABLY REQUIRE TO CONFIRM THAT SUCH
TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT
SUBJECT TO THE REGISTRATION REQUIREMENTS OF, THE SECURITIES ACT.  THIS LEGEND
WILL BE REMOVED UPON THE EARLIER OF THE TRANSFER OF THE NOTE EVIDENCED HEREBY
PURSUANT TO CLAUSE (2)(E) ABOVE OR UPON ANY TRANSFER OF THE NOTES EVIDENCED
HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION).
AS USED HEREIN, THE TERMS "UNITED STATES" AND "UNITED STATES PERSONS" HAVE THE
MEANINGS GIVEN TO THEM BY REGULATION S UNDER THE SECURITIES ACT.


                                      A-2

<PAGE>   81

                          NEXTEL COMMUNICATIONS, INC.

                    4 3/4% CONVERTIBLE SENIOR NOTE DUE 2007


                                                                          CUSIP:

No.:  __________                                            $___________________


     Nextel Communications, Inc., a corporation duly organized and validly
existing under the laws of the State of Delaware (herein called the "Company",
which term includes any successor corporation under the Indenture referred to on
the reverse hereof), for value received hereby promises to pay to
___________________________________________ or registered assigns, the principal
sum of _______________________________  ($___________) on July 1, 2007, at the
office or agency of the Company maintained for that purpose in accordance with
the terms of the Indenture, or, at the option of the holder of this Note, at the
Corporate Trust Office, in such coin or currency of the United States of America
as at the time of payment shall be legal tender for the payment of public and
private debts, and to pay interest, semi-annually on January 1 and July 1 of
each year, commencing January 1, 2000, on said principal sum at said office or
agency, in like coin or currency, at the rate per annum of 4 3/4%, from January
1 or July 1, as the case may be, next preceding the date of this Note to which
interest has been paid or duly provided for, unless the date hereof is a date to
which interest has been paid or duly provided for, in which case from the date
of this Note, or unless no interest has been paid or duly provided for on the
Notes, in which case from June 16, 1999, until payment of said principal sum has
been made or duly provided for.  Notwithstanding the foregoing, if the date
hereof is after any December 15 or June 15, as the case may be, and before the
following January 1 or July 1, this Note shall bear interest from such January 1
or July 1; provided, however, that if the Company shall default in the payment
of interest due on such January 1 or July 1, then this Note shall bear interest
from the next preceding January 1 or July 1, to which interest has been paid or
duly provided for or, if no interest has been paid or duly provided for on such
Note, from June 16, 1999.  The interest payable on the Note pursuant to the
Indenture on any January 1 or July 1 will be paid to the Person entitled thereto
as it appears in the Note register at the close of business on the record date,
which shall be the December 15 or June 15 (whether or not a Business Day) next
preceding such January 1 or July 1, as provided in the Indenture; provided that
any such interest not punctually paid or duly provided for shall be payable as
provided in the Indenture.  Interest may, at the option of the Company, be paid
either (i) by check mailed to the registered address of such Person as it
appears in the Note register (provided that the holder of Notes with an
aggregate principal amount in excess of $10,000,000 shall, at the written
election of such holder delivered to the Trustee on or prior to the relevant
record date, be paid by wire transfer of immediately available funds) or (ii) by
transfer to an account maintained by such Person located in the United States;
provided, however, that payments to the Depositary will be made by wire transfer
of immediately available funds to the account of the Depositary or its nominee.


                                      A-3

<PAGE>   82

     If a resale registration statement (the "Resale Registration Statement")
under the Securities Act with respect to resales of the Notes and the shares of
class A common stock, par value $0.001 per share, of the Company (the "Common
Stock"), issuable upon conversion of the Notes is not declared effective by the
Commission on or before December 31, 1999 in accordance with the terms of the
Registration Rights Agreement dated June 16, 1999 between the Company and
Morgan Stanley & Co. Incorporated, Banc of America Securities LLC, Goldman,
Sachs & Co. and Credit Suisse First Boston Corporation, the Company will pay,
subject to the terms of the Registration Rights Agreement, liquidated damages,
in respect of the Notes, at a rate per annum equal to 0.5% of the Notes and in
respect of each share of Common Stock issued upon conversion of the Notes, at a
rate per annum equal to 0.5% of the then applicable Conversion Price.

     Reference is made to the further provisions of this Note set forth on the
reverse hereof, including, without limitation, provisions giving the holder of
this Note the right to convert this Note into Common Stock of the Company on
the terms and subject to the limitations referred to on the reverse hereof and
as more fully specified in the Indenture.  Such further provisions shall for
all purposes have the same effect as though fully set forth at this place.

     This Note shall be deemed to be a contract made under the laws of the
State of New York, and for all purposes shall be construed in accordance with
and governed by the laws of said State.

     This Note shall not be valid or become obligatory for any purpose until
the certificate of authentication hereon shall have been manually signed by the
Trustee or a duly authorized authenticating agent under the Indenture.


                                      A-4

<PAGE>   83

     IN WITNESS WHEREOF, the Company has caused this Note to be duly executed
and delivered.


                                        NEXTEL COMMUNICATIONS, INC.




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


                                        Attest:
                                               ---------------------------------
                                        Name:
                                             -----------------------------------
                                        Title:
                                              ----------------------------------

Dated:
      ------------------------

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


                    TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the 4 3/4% Convertible Senior Notes due 2007 described in the
within-named Indenture.



                                      HARRIS TRUST AND SAVINGS BANK, as Trustee



                                      By:
                                         -------------------------------------
                                                  Authorized Signatory



                                      By:
                                         -------------------------------------
                                                As Authenticating Agent
                                              (if different from Trustee)


                                      A-5

<PAGE>   84

                           [FORM OF REVERSE OF NOTE]

                          NEXTEL COMMUNICATIONS, INC.

                    4 3/4% CONVERTIBLE SENIOR NOTE DUE 2007


     This Note is one of a duly authorized issue of Notes of the Company,
designated as its 4 3/4% Convertible Senior Notes due 2007 (herein called the
"Notes"), limited to the aggregate principal amount of $500,000,000 (or
$600,000,000 if the over-allotment option set forth in Section 3 of the
Purchase Agreement, dated June 10, 1999 between the Company and the Placement
Agents (as defined in the Indenture referred to below), is exercised in full),
all issued or to be issued under and pursuant to an indenture dated as of June
16, 1999 (herein called the "Indenture"), between the Company and Harris Trust
and Savings Bank, as trustee (herein called the "Trustee"), to which Indenture
and all indentures supplemental thereto reference is hereby made for a
description of the rights, limitations of rights, obligations, duties and
immunities thereunder of the Trustee, the Company and the holders of the Notes.

     In case an Event of Default, as defined in the Indenture, shall have
occurred and be continuing, the principal of, premium, if any, and accrued
interest (including Liquidated Damages Amount (as defined in the Indenture), if
any) on all Notes may be declared, and upon said declaration shall become, due
and payable, in the manner, with the effect and subject to the conditions
provided in the Indenture.

     The Indenture contains provisions permitting the Company and the Trustee,
with the consent of the holders of not less than a majority in aggregate
principal amount of the Notes at the time outstanding, evidenced as in the
Indenture provided, to execute supplemental indentures adding any provisions to
or changing in any manner or eliminating any of the provisions of the Indenture
or of any supplemental indenture or modifying in any manner the rights of the
holders of the Notes; provided, however, that no such supplemental indenture
shall (i) extend the fixed maturity of any Note, or reduce the rate or extend
the time for payment of interest thereon, or reduce the principal amount
thereof or premium, if any, thereon, or reduce any amount payable on redemption
thereof, or impair the right of any Noteholder to institute suit for the
payment thereof, or make the principal thereof or interest or premium, if any,
thereon payable in any coin or currency other than that provided in the Note,
or after the occurrence of a Fundamental Change, and subject to the terms of
Section 3.5 of the Indenture, change the obligation of the Company to
repurchase any Note because of that Fundamental Change (as defined in the
Indenture) in a manner adverse to the holder of the Notes, or impair the right
to convert the Notes into Common Stock subject to the terms set forth in the
Indenture, including Section 14.6 thereof, without the consent of the holder of
each Note so affected or (ii) reduce the aforesaid percentage of Notes, the
holders of which are required to consent to any such supplemental indenture,
without the consent of the holders of all Notes then outstanding.  Subject to
the provisions of the Indenture, the holders of a majority in aggregate
principal amount of the Notes at the time outstanding may on behalf of the
holders of all of the Notes waive any past

                                      A-6

<PAGE>   85

default or Event of Default under the Indenture and its consequences except a
default in the payment of interest (including Liquidated Damages Amount, if
any) or any premium on or the principal of any of the Notes, a default in the
payment of redemption or repurchase price pursuant to Article III or a failure
by the Company to convert any Notes into Common Stock of the Company or a
default in respect of a covenant or provisions hereof which under Article X
cannot be modified without the consent of the holders of each or all Notes then
outstanding or affected thereby.  Any such consent or waiver by the holder of
this Note (unless revoked as provided in the Indenture) shall be conclusive and
binding upon such holder and upon all future holders and owners of this Note
and any Notes which may be issued in exchange or substitute hereof,
irrespective of whether or not any notation thereof is made upon this Note or
such other Notes.

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

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

     The Notes are issuable in fully registered form without coupons in
denominations of $1,000 and any integral multiple of $1,000.  At the office or
agency of the Company referred to on the face hereof, and in the manner and
subject to the limitations provided in this Indenture, without payment of any
service charge but with payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in connection with any registration or
exchange of Notes, Notes may be exchanged for a like aggregate principal amount
of Notes of other authorized denominations.

     At any time on or after July 6, 2002, and prior to maturity, the Notes may
be redeemed at the option of the Company, in whole or  in part, upon notice as
set forth in the Indenture, at the following optional redemption prices
(expressed as percentages of the principal amount), together in each case with
accrued and unpaid interest, if any (including Liquidated Damages Amount, if
any) to, but excluding, the date fixed for redemption.

     If redeemed during the period beginning July 6, 2002 and ending on June
30, 2003, at a redemption price of 102.714% and if redeemed during the 12-month
period beginning July 1:

<TABLE>
<CAPTION>
                        Year                    Redemption Price
                        ----                    ----------------
                        <S>                     <C>
                        2003                        102.036%
                        2004                        101.357%
                        2005                        100.679%
</TABLE>

and 100% if at or after July 1, 2006; provided that if the date fixed for
redemption is after an interest payment record date and on or before January 1
or July 1, then the interest payable on such date shall be paid to the holder
of record on the preceding December 15 or June 15, respectively.


                                      A-7

<PAGE>   86

     The Company shall not give notice of any redemption if a default in the
payment of interest on the Notes has occurred and is continuing.

     The Notes are not subject to redemption through the operation of any
sinking fund.

     If a Fundamental Change occurs at any time prior to maturity or redemption
of the Notes, the Notes will be redeemable on the 30th day after notice thereof
at the option of the holder at a repurchase price equal to 100% of the
principal amount thereof, together with accrued interest to (but excluding) the
date of repurchase; provided that, if such Repurchase Date is January 1 or July
1, the interest payable on such date shall be paid to the holder of record of
the Notes on the preceding December 15 or June 15, respectively; provided,
further, that the Company may omit to comply with its obligation to repurchase
any Notes upon the occurrence of a Fundamental Change if, prior to the
occurrence of such Fundamental Change, the holders of at least a majority in
aggregate principal amount of the Notes at the time outstanding shall have
waived such compliance, but no such waiver shall extend to or affect the
Company's obligations as set forth in Section 3.5 of the Indenture except to
the extent so expressly waived, and, until such waiver shall become effective,
the obligations of the Company and the duties of the Trustee in respect of
Section 3.5 of the Indenture shall remain in full force and effect.  The Notes
will be repurchased in multiples of $1,000 principal amount.  The Company shall
mail to all holders of record of the Notes a notice of the occurrence of a
Fundamental Change and of the repurchase right arising as a result thereof on
or before the tenth day after the occurrence of such Fundamental Change.  For a
Note to be so repaid at the option of the holder, the Company must receive at
the office or agency of the Company maintained for that purpose in accordance
with the terms of the Indenture, such Note with the form entitled "Option to
Elect Repayment Upon a Fundamental Change" on the reverse thereof duly
completed, together with such Notes duly endorsed for transfer, on or before
the 30th day after the date of such notice (or if such 30th day is not a
Business Day, the immediately preceding Business Day).

     Subject to the provisions of the Indenture, the holder hereof has the
right, at its option, at any time after the original issuance of any Notes
through the close of business on the Business Day prior to the date of
repurchase, redemption or final maturity date of the Notes (unless the Company
shall default in payment due upon redemption or repurchase thereof) to convert
the principal hereof or any portion of such principal which is $1,000 or an
integral multiple thereof into that number of shares of the Company's Common
Stock, as said shares shall be constituted at the date of conversion, obtained
by dividing the principal amount of this Note or portion thereof to be
converted by the Conversion Price of $47.308 or such Conversion Price as
adjusted from time to time as provided in the Indenture, upon surrender of this
Note, together with a conversion notice as provided in the Indenture, to the
Company at the office or agency of the Company maintained for that purpose in
accordance with the terms of the Indenture, or at the option of such holder,
the Corporate Trust Office, and, unless the shares issuable on conversion are
to be issued in the same name as this Note, duly endorsed by, or accompanied by
instruments of transfer in form satisfactory to the Company duly executed by,
the holder or by his duly authorized attorney.  No adjustment in respect of
interest or dividends will be made upon any conversion; provided, however, that
if this Note shall be surrendered for conversion during the period from the
close of business on any record date for the


                                      A-8

<PAGE>   87

payment of interest to the close of business on the Business Day preceding the
interest payment date, this Note (unless it or the portion being converted
shall have been called for redemption or repurchase during the period from the
close of business on any record date for the payment of interest to the close
of business on the Business Day preceding the interest payment date) must be
accompanied by an amount, in same day funds or other funds acceptable to the
Company, equal to the interest payable on such interest payment date on the
principal amount being converted.  No fractional shares will be issued upon any
conversion, but either an adjustment in cash will be made, as provided in the
Indenture, in respect of any fraction of a share which would otherwise be
issuable upon the surrender of any Note or Notes for conversion or the number
of shares shall be rounded up to full shares.  A Note in respect of which a
holder is exercising its right to require repurchase upon a Fundamental Change
may be converted only if such holder withdraws its election to exercise such
right in accordance with the terms of the Indenture.

     Upon due presentment for registration of transfer of this Note at the
office or agency of the Company maintained for that purpose in accordance with
the terms of the Indenture, or at the option of the holder of this Note, at the
Corporate Trust Office, a new Note or Notes of authorized denominations for an
equal aggregate principal amount will be issued to the transferee in exchange
thereof; subject to the limitations provided in the Indenture, without charge
except for any tax or other governmental charge imposed in connection
therewith.

     The Company, the Trustee, any authenticating agent, any paying agent, any
conversion agent and any Note registrar may deem and treat the registered
holder hereof as the absolute owner of this Note (whether or not this Note
shall be overdue and notwithstanding any notation of ownership or other writing
hereon made by anyone other than the Company or any Note registrar), for the
purpose of receiving payment hereof, or on account hereof, for the conversion
hereof and for all other purposes, and neither the Company nor the Trustee nor
any other authenticating agent nor any paying agent nor other conversion agent
nor any Note registrar shall be affected by any notice to the contrary.  All
payments made to or upon the order of such registered holder shall, to the
extent of the sum or sums paid, satisfy and discharge liability for monies
payable on this Note.

     No recourse for the payment of the principal of or any premium or interest
on this Note, or for any claim based hereon or otherwise in respect hereof; and
no recourse under or upon any obligation, covenant or agreement of the Company
in the Indenture or any indenture supplemental thereto or in any Note, or
because of the creation of any indebtedness represented thereby, shall be had
against any incorporator, stockholder, employee, agent, officer or director or
subsidiary, as such, past, present or future, of the Company or of any
successor Person, either directly or through the Company or any successor
Person, whether by virtue of any constitution, statute or rule of law or by the
enforcement of any assessment or penalty or otherwise, all such liability
being, by acceptance hereof and as part of the consideration for the issue
hereof, expressly waived and released.

     This Note shall be deemed to be a contract made under the laws of New
York, and for all purposes shall be construed in accordance with the laws of
New York, without regard to principles of conflicts of laws.


                                      A-9

<PAGE>   88

     Terms used in this Note and defined in the Indenture are used herein as
therein defined.


                                      A-10

<PAGE>   89

                                 ABBREVIATIONS


     The following abbreviations, when used in the inscription of the face of
this Note, shall be construed as though they were written out in full according
to applicable laws or regulations.

<TABLE>
<S>                                     <C>
TEN COM - as tenants in common          UNIF GIFT MIN ACT - __________ Custodian _____________
TEN ENT - as tenant by the entireties                                 (Cust)                  (Minor)
JT TEN -  as joint tenants with right   under Uniform Gifts to Minors Act
          of survivorship and not as
          tenants in common             _____________________________  _______________________
                                                                       (State)
</TABLE>


                   Additional abbreviations may also be used
                         though not in the above list.


                                      A-11

<PAGE>   90

                               CONVERSION NOTICE


TO:  NEXTEL COMMUNICATIONS, INC.

     The undersigned registered owner of this Note hereby irrevocable exercises
the option to convert this Note, or the portion thereof (which is $1,000 or an
integral multiple thereof) below designated, into shares of Common Stock of
Nextel Communications, Inc. in accordance with the terms of the Indenture
referred to in this Note, and directs that the shares issuable and deliverable
upon such conversion, together with any check in payment for fractional shares
and any Notes representing any unconverted principal amount hereof, be issued
and delivered to the registered holder hereof unless a different name has been
indicated below.  If shares or any portion of this Note not converted are to be
issued in the name of a person other than the undersigned, the undersigned will
provide the appropriate information below and pay all transfer taxes payable
with respect thereto.  Any amount required to be paid to the undersigned on
account of interest accompanies this Note.

Dated:
      ------------------------

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


                                        ----------------------------------------
                                        Signature(s)

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


                                        ----------------------------------------
                                        Signature Guarantee


                                      A-12

<PAGE>   91

Fill in the registration of shares of Common Stock if to be issued, and Notes
if to be delivered, other than to and in the name of the registered holder:



- ----------------------------------------
(Name)


- ----------------------------------------
(Street Address)


- ----------------------------------------
(City, State and Zip Code)


Please print name and address


Principal amount to be converted
(if less than all):  $
                      ------------------

Social Security or Other Taxpayer
Identification Number:
                      ------------------


                                      A-13

<PAGE>   92

                           OPTION TO ELECT REPAYMENT
                           UPON A FUNDAMENTAL CHANGE


TO:  NEXTEL COMMUNICATIONS, INC.

     The undersigned registered owner of this Note hereby irrevocably
acknowledges receipt of a notice from Nextel Communications, Inc. (the
"Company") as to the occurrence of a Fundamental Change with respect to the
Company and requests and instructs the Company to repay the entire principal
amount of this Note, or the portion thereof (which is $1,000 or an integral
multiple thereof) below designated, in accordance with the terms of the
Indenture referred to in this Note at the repurchase price, together with
accrued interest to, but excluding, such date, to the registered holder hereof.


Date:
     -------------------------



                                        ----------------------------------------
                                        Signature(s)

                                        NOTICE: The above signatures of the
                                        holder(s) hereof must correspond with
                                        the name as written upon the face of
                                        the Note in every particular without
                                        alteration or enlargement or any change
                                        whatever.

                                        Principal amount to be repaid (if less
                                        than all):



                                                    $_______________



                                        ----------------------------------------
                                        Social Security or Other
                                        Taxpayer Identification Number


                                      A-14

<PAGE>   93

                                   ASSIGNMENT


     For value received _________________________ hereby sell(s), assign(s) and
transfer(s) unto _________________________ (Please insert social security or
other Taxpayer Identification Number of assignee) the within Note, and hereby
irrevocably constitutes and appoints _________________________  attorney to
transfer the said Note on the books of the Company, with full power of
substitution in the premises.

     In connection with any transfer of the Note within the United States or
to, or for the account of, U.S. persons (in each case as defined in Regulation
S under the Securities Act) and within the period prior to the expiration of
the holding period applicable to sales thereof under Rule 144(k) under the
Securities Act (or any successor provision) (other than any transfer pursuant
to a registration statement that has been declared effective under the
Securities Act), the undersigned confirms that such Note is being transferred:

     [ ]      To Nextel Communications, Inc. or a subsidiary thereof; or

     [ ]      Pursuant to and in compliance with Rule 144A under the Securities
              Act of 1933, as amended; or

     [ ]      To an Institutional Accredited Investor pursuant to and in
              compliance with the Securities Act of 1933, as amended; or

     [ ]      Pursuant to and in compliance with Rule 144 under the Securities
              Act of 1933, as amended;

and unless the box below is checked, the undersigned confirms that such Note is
not being transferred to an "affiliate" of the Company as defined in Rule 144
under the Securities Act of 1933, as amended (an "Affiliate").

     [ ]      The transferee is an Affiliate of the Company.


Dated:
      ------------------------          ----------------------------------------



                                        ----------------------------------------
                                        Signature(s)

                                        Signature(s) must be guaranteed by an
                                        "eligible guarantor institution"
                                        meeting the requirements of the Note
                                        registrar, which requirements include


                                      A-15

<PAGE>   94

                                        membership or participation in the
                                        Security Transfer Agent Medallion
                                        Program ("STAMP") or such other
                                        "signature guarantee program" as may be
                                        determined by the Note registrar in
                                        addition to, or in substitution for,
                                        STAMP, all in accordance with the
                                        Securities Exchange Act of 1934, as
                                        amended.


                                        ----------------------------------------
                                        Signature Guarantee



NOTICE:  The signature of the conversion notice, the option to elect repayment
upon a Fundamental Change or the assignment must correspond with the name as
written upon the face of the Note in every particular without alteration or
enlargement or any change whatever.


                                      A-16

<PAGE>   95

                                   EXHIBIT B


                       FORM OF ACCREDITED INVESTOR LETTER


Morgan Stanley & Co. Incorporated
Banc of America Securities LLC
Goldman, Sachs & Co.
Credit Suisse First Boston

c/o Morgan Stanley & Co. Incorporated
1585 Broadway
New York, New York 10036

Ladies and Gentlemen:

     In connection with our proposed purchase of 4 3/4% Convertible Senior Notes
due 2007  (the "Notes") of Nextel Communications, Inc., a Delaware corporation
("Nextel"), we confirm that:

     1.       We have received a copy of the Memorandum (the "Memorandum")
relating to the Notes and such other information as we deem necessary in order
to make our investment decision.  We acknowledge that we have read and agreed
to the matters stated in the section entitled "Transfer Restrictions" of such
Memorandum.

     2.       We understand that any subsequent transfer of Notes is subject to
certain restrictions and conditions set forth in the Indenture relating to the
Notes (the "Indenture") (as described in the Memorandum) and the undersigned
agrees to be bound by, and not to resell, pledge or otherwise transfer the
Notes except in compliance with the Securities Act of 1933, as amended (the
"Securities Act"), and all applicable state securities laws.

     3.       We understand that the offer and sale of the Notes have not been
registered under the Securities Act or pursuant to any state securities laws,
and that the Notes may therefore not be offered or sold within the United
States or to, for the account or benefit of, U.S. persons except as permitted
in the following sentence.  We agree, on our own behalf and on behalf of any
accounts for which we are acting as hereinafter stated, that if we should sell
any Notes, we will do so only (i) to Nextel or any subsidiary thereof, (ii)
inside the United States in accordance with Rule 144A promulgated under the
Securities Act to a "qualified institutional buyer" (as defined therein), (iii)
to an "institutional accredited investor" (as defined below), that, prior to
such transfer, furnishes (or has furnished on its behalf by a United States
broker-dealer) to the Trustee (as defined in the Indenture) a signed letter
containing certain representations and agreements relating to the restrictions
on transfer of the Notes (the form of which letter can be obtained from


                                      B-1

<PAGE>   96

the Trustee), (iv) pursuant to the exemption from registration Provided by Rule
144 promulgated under the Securities Act (if applicable), or (v) pursuant to an
effective registration statement under the Securities Act, and we further agree
to provide to any person purchasing any of the Notes from us a notice advising
such purchaser that any resale of the Securities are restricted as stated
herein.

     4.       We understand that, on any proposed resale of any Notes, we will
be required to furnish to the Trustee and Nextel such certifications, written
legal opinions and other information as the Trustee and Nextel may reasonably
require to confirm that the proposed sale complies with the foregoing
restrictions.  We further understand that the Notes purchased by us will bear a
legend to the foregoing effect.

     5.       We are an institutional "accredited investor" (as defined in Rule
501(a)(1), (2), (3) or (7) of Regulation D promulgated under the Securities
Act) and have such knowledge and experience in financial and business matters
as to be capable of evaluating the merits and risks of our investment in the
Notes, and we and any accounts for which we are acting are each able to bear
the economic risk of our or their investment, as the case may be.

     6.       We are acquiring the Notes purchased by us for our account or for
one or more accounts (each of which is an institutional "accredited investor")
as to each of which we exercise sole investment discretion.

     You, Nextel and the Trustee, and their respective counsel are entitled to
rely upon this letter and are irrevocably authorized to produce this letter or
a copy hereof to any interested party in any administrative or legal proceeding
or official inquiry with respect to the matters covered hereby.

     THIS LETTER SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE
INTERNAL LAWS OF THE STATE OF NEW YORK.



                                        Very truly yours,



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


                                      B-2



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission