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

                                  CD RADIO INC.


                                       and


                       U.S. TRUST COMPANY OF TEXAS, N.A.,
                                   as Trustee


                                    INDENTURE


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

                         Dated as of September 29, 1999

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


                      Subordinated Indebtedness Securities

================================================================================
<PAGE>

                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----

ARTICLE 1       DEFINITIONS AND OTHER PROVISIONS
                OF GENERAL APPLICATION.........................................1
        Section 1.1   Definitions..............................................1
        Section 1.2   Compliance Certificates and Opinions....................11
        Section 1.3   Form of Documents Delivered to Trustee..................12
        Section 1.4   Acts of Holders.........................................12
        Section 1.5   Notices, etc., to Trustee and Company...................15
        Section 1.6   Notice to Holders; Waiver...............................15
        Section 1.7   Effect of Headings and Table of Contents................17
        Section 1.8   Successors and Assigns..................................17
        Section 1.9   Separability Clause.....................................17
        Section 1.10  Benefits of Indenture...................................17
        Section 1.11  Governing Law...........................................17
        Section 1.12  Legal Holidays..........................................17
        Section 1.13  Personal Immunity from Liability for Incorporators,
                      Stockholders, Etc.......................................18
        Section 1.14  Conflict with Trust Indenture Act.......................18

ARTICLE 2       SECURITIES FORMS..............................................18
        Section 2.1   Forms of Securities.....................................18
        Section 2.2   Form of Trustee's Certificate of Authentication.........19
        Section 2.3   Securities Issuable in Global Form......................19

ARTICLE 3       THE SECURITIES................................................20
        Section 3.1   Amount Unlimited; Issuable in Series....................20
        Section 3.2   Denominations...........................................25
        Section 3.3   Execution, Authentication, Delivery and Dating..........25
        Section 3.4   Temporary Securities....................................28
        Section 3.5   Registration, Registration of Transfer and Exchange.....30
        Section 3.6   Mutilated, Destroyed, Lost and Stolen Securities........34
        Section 3.7   Payment of Interest; Interest Rights Preserved..........35
        Section 3.8   Persons Deemed Owners...................................37
        Section 3.9   Cancellation............................................38
        Section 3.10  Computation of Interest.................................39

ARTICLE 4       SATISFACTION AND DISCHARGE....................................39
        Section 4.1   Satisfaction and Discharge of Indenture.................39
        Section 4.2   Application of Trust Funds..............................40

                                        i
<PAGE>

                                                                            Page
                                                                            ----

ARTICLE 5       REMEDIES......................................................41
        Section 5.1   Events of Default.......................................41
        Section 5.2   Acceleration of Maturity; Rescission and Annulment......42
        Section 5.3   Collection of Indebtedness and Suits for Enforcement by
                      Trustee.................................................43
        Section 5.4   Trustee May File Proofs of Claim........................44
        Section 5.5   Trustee May Enforce Claims Without Possession of
                      Securities or Coupons...................................45
        Section 5.6   Application of Money Collected..........................45
        Section 5.7   Limitation on Suits.....................................46
        Section 5.8   Unconditional Right of Holders to Receive Principal,
                      Premium, if any, Interest and Additional Amounts........47
        Section 5.9   Restoration of Rights and Remedies......................47
        Section 5.10  Rights and Remedies Cumulative..........................47
        Section 5.11  Delay or Omission Not Waiver............................47
        Section 5.12  Control by Holders of Securities........................48
        Section 5.13  Waiver of Past Defaults.................................48
        Section 5.14  Waiver of Usury, Stay or Extension Laws.................48
        Section 5.15  Undertaking for Costs...................................49

ARTICLE 6       THE TRUSTEE...................................................49
        Section 6.1   Certain Duties and Responsibilities.....................49
        Section 6.2   Notice of Defaults......................................50
        Section 6.3   Certain Rights of Trustee...............................51
        Section 6.4   Not Responsible for Recitals or Issuance of Securities..52
        Section 6.5   May Hold Securities.....................................52
        Section 6.6   Money Held in Trust.....................................52
        Section 6.7   Compensation and Reimbursement..........................53
        Section 6.8   Corporate Trustee Required; Eligibility;
                      Conflicting Interests...................................53
        Section 6.9   Resignation and Removal; Appointment of Successor.......54
        Section 6.10  Acceptance of Appointment by Successor..................55
        Section 6.11  Merger, Conversion, Consolidation or
                      Succession to Business..................................57
        Section 6.12  Appointment of Authenticating Agent.....................57

ARTICLE 7       HOLDERS' LISTS AND REPORTS BY TRUSTEE
                AND COMPANY...................................................59
        Section 7.1   Disclosure of Names and Addresses of Holders............59
        Section 7.2   Reports by Trustee......................................59
        Section 7.3   Reports by Company......................................59
        Section 7.4   Company to Furnish Trustee Names and
                      Addresses of Holders....................................60

                                       ii
<PAGE>

                                                                            Page
                                                                            ----

ARTICLE 8       CONSOLIDATION, MERGER, SALE, LEASE
                OR CONVEYANCE.................................................61
        Section 8.1   Consolidations and Mergers of Company and Sales, Leases
                      and Conveyances Permitted Subject to Certain Conditions.61
        Section 8.2   Rights and Duties of Successor Corporation..............61
        Section 8.3   Officers' Certificate and Opinion of Counsel............62

ARTICLE 9       SUPPLEMENTAL INDENTURES.......................................62
        Section 9.1   Supplemental Indentures without Consent of Holders......62
        Section 9.2   Supplemental Indentures with Consent of Holders.........64
        Section 9.3   Execution of Supplemental Indentures....................66
        Section 9.4   Effect of Supplemental Indentures.......................66
        Section 9.5   Conformity with Trust Indenture Act.....................66
        Section 9.6   Reference in Securities to Supplemental Indentures......66

ARTICLE 10      COVENANTS.....................................................66
        Section 10.1  Payment of Principal, Premium, if any,
                      Interest and Additional Amounts.........................66
        Section 10.2  Maintenance of Office or Agency.........................67
        Section 10.3  Money for Securities Payments to Be Held in Trust.......69
        Section 10.4  Existence...............................................70
        Section 10.5  Maintenance of Properties...............................70
        Section 10.6  Payment of Taxes and Other Claims.......................71
        Section 10.7  Statement as to Compliance..............................71
        Section 10.8  Additional Amounts......................................71
        Section 10.9  Waiver of Certain Covenants.............................72

ARTICLE 11      REDEMPTION OF SECURITIES......................................73
        Section 11.1  Applicability of Article................................73
        Section 11.2  Election to Redeem; Notice to Trustee...................73
        Section 11.3  Selection by Trustee of Securities to Be Redeemed.......73
        Section 11.4  Notice of Redemption....................................73
        Section 11.5  Deposit of Redemption Price.............................75
        Section 11.6  Securities Payable on Redemption Date...................75
        Section 11.7  Securities Redeemed in Part.............................76

ARTICLE 12      SINKING FUNDS.................................................77
        Section 12.1  Applicability of Article................................77
        Section 12.2  Satisfaction of Sinking Fund Payments with Securities...77
        Section 12.3  Redemption of Securities for Sinking Fund...............77

                                       iii
<PAGE>

                                                                            Page
                                                                            ----

ARTICLE 13      REPURCHASE AT THE OPTION OF HOLDERS...........................78
        Section 13.1  Applicability of Article................................78
        Section 13.2  Repurchase of Securities................................78
        Section 13.3  Notice; Exercise of Repurchase Right....................78
        Section 13.4  When Securities Presented for Repurchase
                      Become Due and Payable..................................79
        Section 13.5  Securities Not Repurchased on Repurchase Date...........80
        Section 13.6  Securities Repaid in Part...............................80

ARTICLE 14      DEFEASANCE AND COVENANT DEFEASANCE............................81
        Section 14.1  Applicability of Article; Company's Option to
                      Effect Defeasance or Covenant Defeasance................81
        Section 14.2  Defeasance and Discharge................................81
        Section 14.3  Covenant Defeasance.....................................82
        Section 14.4  Conditions to Defeasance or Covenant Defeasance.........82
        Section 14.5  Deposited Money and Government Obligations to
                      Be Held in Trust; Other Miscellaneous Provisions........84
        Section 14.6  Reinstatement...........................................85

ARTICLE 15      SUBORDINATION.................................................86
        Section 15.1  Agreement to Subordinate................................86
        Section 15.2  Liquidation; Dissolution; Bankruptcy....................86
        Section 15.3  Default on Senior Indebtedness..........................86
        Section 15.4  Acceleration of Securities..............................87
        Section 15.5  When Distribution Must Be Paid Over.....................87
        Section 15.6  Notice by Company.......................................87
        Section 15.7  Subrogation.............................................87
        Section 15.8  Relative Rights.........................................88
        Section 15.9  Subordination May Not Be Impaired by Company............88
        Section 15.10 Distribution or Notice to Representative................88
        Section 15.11 Rights of Trustee and Paying Agent......................88


TESTIMONIUM
SIGNATURES AND SEALS
ACKNOWLEDGMENTS
EXHIBIT A - FORMS OF CERTIFICATION

                                       iv
<PAGE>

                                  CD RADIO INC.


         Reconciliation and tie between Trust Indenture Act of 1939 (the "TIA")
and Indenture, dated as of September 29, 1999.


Trust Indenture Act Section                  Indenture Section

310(a)(1)...................................         6.7
    (b)(2)..................................         6.7
    (b).....................................         6.7, 6.8
312(a)......................................         7.4
312(c)......................................         7.1
313(a)......................................         7.2
    (c).....................................         7.2
314(a)......................................         7.3
    (a)(4)..................................         10.9
    (c)(1)..................................         1.2
    (c)(2)..................................         1.2
    (e).....................................         1.2
315(b)......................................         6.1
316(a) (last sentence)......................         1.1 ("Outstanding")
    (a)(1)(A)...............................         5.12
    (a)(1)(B)...............................         5.13
    (b).....................................         5.8
317(a)(1)...................................         5.3
    (a)(2)..................................         5.4
318(a)......................................         1.11
    (c).....................................         1.11


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

         Attention should also be directed to Section 318(c) of the TIA, which
provides that the provisions of Sections 310 through 317 of the TIA are a part
of and govern every qualified indenture, whether or not physically contained in
the Indenture.
<PAGE>

         INDENTURE, dated as of September 29, 1999, between CD RADIO INC., a
Delaware corporation (hereinafter called the "Company"), having its principal
office at 1221 Avenue of the Americas, 36th Floor, New York, New York 10020 and
U.S. Trust Company of Texas, N.A., a national banking association organized
under the laws of the United States of America, as Trustee hereunder
(hereinafter called the "Trustee"), having an office at 114 West 47th Street,
25th Floor, New York, NY 10036, c/o United States Trust Company of New York.

                             RECITALS OF THE COMPANY

         The Company deems it necessary to issue from time to time for its
lawful purposes subordinated debt securities (hereinafter called the
"Securities") evidencing its subordinated indebtedness, and has duly authorized
the execution and delivery of this Indenture to provide for the issuance from
time to time of the Securities, unlimited as to principal amount, to bear
interest at the rates or formulas, to mature at such times and to have such
other provisions as shall be fixed as hereinafter provided.

         This Indenture is subject to the provisions of the Trust Indenture Act
of 1939 that are deemed to be incorporated into this Indenture and shall, to the
extent applicable, be governed by such provisions.

         All things necessary to make this Indenture a valid agreement of the
Company, in accordance with its terms, have been done.

         NOW, THEREFORE, THIS INDENTURE WITNESSETH:

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

                                    ARTICLE 1

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION

         Section 1.1 Definitions. For all purposes of this Indenture, except as
otherwise expressly provided or unless the context otherwise requires:

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

                                                                               2

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

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

                  (4) the word "including" means "including without limitation,"
         and

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

         "Act," when used with respect to any Holder, has the meaning specified
in Section 1.4.

         "Additional Amounts" means any additional amounts which are required by
a Security or by or pursuant to a Board Resolution, under circumstances
specified therein, to be paid by the Company in respect of certain taxes imposed
on certain Holders and which are owing to such Holders.

         "Affiliate" of any specified Person means 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" when used with respect to any specified Person means the power to
direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities, by contract or otherwise;
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

         "Authenticating Agent" means any authenticating agent appointed by the
Trustee pursuant to Section 6.11.

         "Authorized Newspaper" means a newspaper, printed in the English
language or in an official language of the country of publication, customarily
published on each Business Day, whether or not published on Saturdays, Sundays
or holidays, and of general circulation in each place in connection with which
the term is used or in the financial community of each such place. Whenever
successive publications are required to be made in Authorized Newspapers, the
successive publications may be made in the same or in different Authorized
Newspapers in the same city meeting the foregoing requirements and in each case
on any Business Day.

         "Bankruptcy Law" has the meaning specified in Section 5.1.
<PAGE>

                                                                               3

         "Bearer Security" means any Security established pursuant to Section
2.1 which is payable to bearer.

         "Board of Directors" means the board of directors of the Company, the
executive committee of that board or any committee of that board duly authorized
to act hereunder.

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

         "Business Day," when used with respect to any Place of Payment or any
other particular location referred to in this Indenture or in the Securities,
means, unless otherwise specified with respect to any Securities pursuant to
Section 3.1, any day, other than a Saturday or Sunday, that is neither a legal
holiday nor a day on which banking institutions in that Place of Payment or
particular location are authorized or required by law, regulation or executive
order to close.

         "CEDEL" means Centrale de Livraison de Valeurs Mobilieres, S.A., or its
successor.

         "Commission" means the Securities and Exchange Commission, as from time
to time constituted, created under the Securities Exchange Act of 1934, or, if
at any time after execution of this instrument such Commission is not existing
and performing the duties now assigned to it under the Trust Indenture Act, then
the body performing such duties on such date.

         "Common Depositary" has the meaning specified in Section 3.4.

         "Common Stock" means, with respect to any Person, capital stock issued
by such Person other than Preferred Stock.

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

         "Company Request" and "Company Order" mean, respectively, a written
request or order signed in the name of the Company by the Chief Executive
Officer, Chief Financial Officer, the President or a Vice President of the
Company and delivered to the Trustee.
<PAGE>

                                                                               4

         "Corporate Trust Office" means the office of the Trustee at which, at
any particular time, its corporate trust business shall be principally
administered, which office at the date hereof is located at 114 West 47th
Street, 25th Floor, New York, NY 10036, c/o United States Trust Company of New
York.

         "corporation" means a corporation, association, partnership, companies
(including limited liability companies) joint-stock company or business trust.

         "coupon" means any interest coupon appertaining to a Bearer Security.

         "Currency Conversion Event" means the cessation of use of (i) a Foreign
Currency both by the government of the country which issued such currency and
for the settlement of transactions by a central bank or other public
institutions of or within the international banking community, (ii) the ECU both
within the European Monetary System and for the settlement of transactions by
public institutions of or within the European Communities or (iii) any currency
unit (or composite currency) other than the ECU for the purposes for which it
was established.

         "Custodian" has the meaning specified in Section 5.1.

         "Defaulted Interest" has the meaning specified in Section 3.7.

         "Dollar" or "$" means a dollar or other equivalent unit in such coin or
currency of the United States of America as at the time shall be legal tender
for the payment of public and private debts.

         "DTC" has the meaning specified in Section 3.4.

         "ECU" means the European Currency Unit as defined and revised from time
to time by the Council of the European Communities.

         "Euroclear" means Morgan Guaranty Trust Company of New York, Brussels
Office, or its successor as operator of the Euroclear System.

         "European Communities" means the European Economic Community, the
European Coal and Steel Community and the European Atomic Energy Community.

         "European Monetary System" means the European Monetary System
established by the Resolution of December 5, 1978 of the Council of the European
Communities.

         "Event of Default" has the meaning specified in Article 5.

         "Foreign Currency" means any currency, currency unit or composite
currency, including the ECU, issued by the government of one or more countries
<PAGE>

                                                                               5

other than the United States of America or by any recognized confederation or
association of such governments.

         "GAAP" means generally accepted accounting principles, as in effect
from time to time, as used in the United States, applied on a consistent basis.

         "Government Obligations" means securities which are (i) direct
obligations of the United States of America or the government which issued the
Foreign Currency in which the Securities of a particular series are payable, for
the payment of which its full faith and credit is pledged or (ii) obligations of
a Person controlled or supervised by and acting as an agency or instrumentality
of the United States of America or such government which issued the foreign
currency in which the Securities of such series are payable, the payment of
which is unconditionally guaranteed as a full faith and credit obligation by the
United States of America or such other government, which, in either case, are
not callable or redeemable at the option of the issuer thereof, and shall also
include a depository receipt issued by a bank or trust company as custodian with
respect to any such Government Obligation or a specific payment of interest on
or principal of any such Government Obligation held by such custodian for the
account of the holder of a depository receipt, provided that (except as required
by law) such custodian is not authorized to make any deduction from the amount
payable to the holder of such depository receipt from any amount received by the
custodian in respect of the Government Obligation or the specific payment of
interest on or principal of the Government Obligation evidenced by such
depository receipt.

         "Holder" means, in the case of a Registered Security, the Person in
whose name a Security is registered in the Security Register and, in the case of
a Bearer Security, the bearer thereof and, when used with respect to any coupon,
shall mean the bearer thereof.

         "Indenture" means this instrument as originally executed or as it may
from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into pursuant to the applicable provisions hereof,
and shall include the terms of particular series of Securities established as
contemplated by Section 3.1; provided, however, that, if at any time more than
one Person is acting as Trustee under this instrument, "Indenture" shall mean,
with respect to any one or more series of Securities for which such Person is
Trustee, this instrument as originally executed or as it may from time to time
be supplemented or amended by one or more indentures supplemental hereto entered
into pursuant to the applicable provisions hereof and shall include the terms of
the particular series of Securities for which such Person is Trustee established
as contemplated by Section 3.1, exclusive, however, of any provisions or terms
which relate solely to other series of Securities for which such Person is not
Trustee, regardless of when such terms or provisions were adopted, and exclusive
of any provisions or terms adopted by means of one or more indentures
supplemental hereto executed and delivered after such Person had become such
Trustee but to which such Person, as such Trustee, was not a party.
<PAGE>

                                                                               6

         "Indexed Security" means a Security the terms of which provide that the
principal amount thereof payable at Stated Maturity may be more or less than the
principal face amount thereof at original issuance.

         "interest," when used with respect to an Original Issue Discount
Security which by its terms bears interest only after Maturity, shall mean
interest payable after Maturity, and, when used with respect to a Security which
provides for the payment of Additional Amounts pursuant to Section 10.8,
includes such Additional Amounts.

         "Interest Payment Date," when used with respect to any Security, means
the Stated Maturity of an installment of interest on such Security.

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

         "Material Adverse Effect" has the meaning specified in Section 10.4.

         "Officers' Certificate" means a certificate signed by the Chairman of
the Board of Directors, the President or a Vice President and by the Treasurer,
an Assistant Treasurer, the Secretary or an Assistant Secretary of the Company,
and delivered to the Trustee.

         "Opinion of Counsel" means a written opinion of counsel, who may be
counsel for the Company or who may be an employee of or other counsel for the
Company and who shall be reasonably satisfactory to the Trustee.

         "Original Issue Discount Security" means any Security which provides
for an amount less than the principal amount thereof to be due and payable upon
a declaration of acceleration of the Maturity thereof pursuant to Section 5.2.

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

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

                  (ii) Securities, or portions thereof, for whose payment or
         redemption or repayment at the option of the Holder money in the
         necessary amount has been theretofore deposited with the Trustee or any
         Paying Agent (other than the Company) in trust or set aside and
         segregated in trust by the Company (if the Company shall act as its
<PAGE>

                                                                               7

         own Paying Agent) for the Holders of such Securities and any coupons
         appertaining thereto; provided that, if such Securities are to be
         redeemed, notice of such redemption has been duly given pursuant to
         this Indenture or provision therefor satisfactory to the Trustee has
         been made;

                  (iii) Securities, except to the extent provided in Sections
         14.2 and 14.3, with respect to which the Company has effected
         defeasance and/or covenant defeasance as provided in Article 14;

                  (iv) Securities which have been paid pursuant to Section 3.6
         or in exchange for or in lieu of which other Securities have been
         authenticated and delivered pursuant to this Indenture, other than any
         such Securities in respect of which there shall have been presented to
         the Trustee proof satisfactory to it that such Securities are held by a
         bona fide purchaser in whose hands such Securities are valid
         obligations of the Company; and

                  (v) Securities converted into Common Stock or Preferred Stock
         pursuant to or in accordance with this Indenture if the terms of such
         Securities provide for convertibility pursuant to Section 3.1;

provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder or are present at
a meeting of Holders for quorum purposes, and for the purpose of making the
calculations required by TIA Section 313, (i) the principal amount of an
Original Issue Discount Security that may be counted in making such
determination or calculation and that shall be deemed to be Outstanding for such
purpose shall be equal to the amount of principal thereof that would be (or
shall have been declared to be) due and payable, at the time of such
determination, upon a declaration of acceleration of the maturity thereof
pursuant to Section 5.2, (ii) the principal amount of any Security denominated
in a Foreign Currency that may be counted in making such determination or
calculation and that shall be deemed Outstanding for such purpose shall be equal
to the Dollar equivalent, determined pursuant to Section 3.1 as of the date such
Security is originally issued by the Company, of the principal amount (or, in
the case of an Original Issue Discount Security, the Dollar equivalent as of
such date of original issuance of the amount determined as provided in clause
(i) above) of such Security, (iii) the principal amount of any Indexed Security
that may be counted in making such determination or calculation and that shall
be deemed outstanding for such purpose shall be equal to the principal face
amount of such Indexed Security at original issuance, unless otherwise provided
with respect to such Security pursuant to Section 3.1, and (iv) Securities owned
by the Company or any other obligor upon the Securities or any Affiliate of the
Company or of such other obligor shall be disregarded and deemed not to be
Outstanding, except that, in determining whether the Trustee shall be protected
in making such calculation or in relying upon any such request, demand,
authorization,
<PAGE>

                                                                               8

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

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

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

         "Place of Payment," when used with respect to the Securities of or
within any series, means the place or places where the principal of (and
premium, if any) and interest on such Securities are payable as specified as
contemplated by Sections 3.1 and 10.2.

         "Predecessor Security" of any particular Security means every previous
Security evidencing all or a portion of the same debt as that evidenced by such
particular Security; and, for the purposes of this definition, any Security
authenticated and delivered under Section 3.6 in exchange for or in lieu of a
mutilated, destroyed, lost or stolen Security or a Security to which a
mutilated, destroyed, lost or stolen coupon appertains shall be deemed to
evidence the same debt as the mutilated, destroyed, lost or stolen Security or
the Security to which the mutilated, destroyed, lost or stolen coupon
appertains.

         "Preferred Stock" means, with respect to any Person, capital shares
issued by such Person that are entitled to a preference or priority over any
other capital shares issued by such Person upon any distribution of such
Person's assets, whether by dividend or upon liquidation, dissolution or winding
up.

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

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

         "Registered Security" shall mean any Security which is registered in
the Security Register.
<PAGE>

                                                                               9

         "Regular Record Date" for the interest payable on any Interest Payment
Date on the Registered Securities of or within any series means the date
specified for that purpose as contemplated by Section 3.1, whether or not a
Business Day.

         "Repurchase Date" means, when used with respect to any Security to be
repaid at the option of the Holder, the date fixed for such repayment by or
pursuant to this Indenture.

         "Repurchase Price" means, when used with respect to any Security to be
repaid at the option of the Holder, the price at which it is to be repaid by or
pursuant to this Indenture.

         "Representative" means the indenture trustee or other trustee, agent or
representative for an issue of Senior Indebtedness.

         "Responsible Officer," when used with respect to the Trustee, means the
chairman or vice-chairman of the Board of Directors, the chairman or
vice-chairman of the executive committee of the Board of Directors, the
president, any vice president (whether or not designated by a number or a word
or words added before or after the title "vice president,") the secretary, any
assistant secretary, the treasurer, any assistant treasurer, any corporate trust
officer, the controller or any other officer of the Trustee customarily
performing functions similar to those performed by any of the above designated
officers and also means, with respect to a particular corporate trust matter,
any other officer to whom such matter is referred because of such officer's
knowledge and familiarity with the particular subject.

         "Security" has the meaning stated in the first recital of this
Indenture and, more particularly, means any Security or Securities authenticated
and delivered under this Indenture; provided, however, that, if at any time
there is more than one Person acting as Trustee under this Indenture,
"Securities" with respect to the Indenture as to which such Person is Trustee
shall have the meaning stated in the first recital of this Indenture and shall
more particularly mean Securities authenticated and delivered under this
Indenture, exclusive, however, of Securities of any series as to which such
Person is not Trustee.

         "Security Register" and "Security Registrar" have the respective
meanings specified in Section 3.5.

         "Senior Indebtedness" means: (1) the principal, premium, if any,
interest and all other amounts owed in respect of all the Company's (A)
indebtedness for money borrowed and (B) indebtedness evidenced by securities,
debentures, bonds or other similar instruments, (2) all of the Company's capital
lease obligations, (3) all obligations issued or assumed by the Company as the
deferred purchase price of property, all of the Company's conditional sale
obligations and all of the Company's obligations under any title retention
agreement (but excluding trade accounts payable arising in the ordinary course
of business), (4) all of the Company's obligations for
<PAGE>

                                                                              10

the reimbursement of any letter of credit, banker's acceptance, security
purchase facility or similar credit transaction, (5) all obligations of the type
referred to in clauses (1) through (4) above of other persons for the payment of
which the Company is responsible or liable as obligor, guarantor or otherwise,
and (6) all obligations of the type referred to in clauses (1) through (5) above
of other persons secured by any lien on any of the Company's properties or
assets (whether or not such obligation is assumed by the Company), except in
each case for (x) any such indebtedness that is by its terms subordinated to or
pari passu with the Securities and (y) any indebtedness between or among the
Company or affiliates of the Company, including all other debt securities and
guarantees in respect of those debt securities issued to any trust, or trustees
of such trust, partnership or other entity affiliated with the Company that is,
directly or indirectly, a financing vehicle of the Company (a "Financing
Entity") in connection with the issuance by such Financing Entity of preferred
securities or other securities that rank pari passu with, or junior to, the
Securities.

         "Significant Subsidiary" means any Subsidiary which is a "significant
subsidiary" (as defined in Article 1, Rule 1-02 of Regulation S-X, promulgated
under the Securities Act of 1933) of the Company.

         "Special Record Date" for the payment of any Defaulted Interest on the
Registered Securities of or within any series means a date fixed by the Trustee
pursuant to Section 3.7.

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

         "Subsidiary" means a corporation a majority of the outstanding voting
stock of which is owned, directly or indirectly, by the Company or by one or
more other Subsidiaries of the Company, or by the Company and one or more other
Subsidiaries. For the purposes of this definition, "voting stock" means stock
that ordinarily has voting power for the election of directors, whether at all
times or only so long as no senior class of stock has such voting power by
reason of any contingency.

         "Trust Indenture Act" or "TIA" means the Trust Indenture Act of 1939,
as in force at the date hereof; provided, however, that in the event the Trust
Indenture Act of 1939 or such rules and regulations are amended after such date,
"Trust Indenture Act" means, to the extent required by any such amendment, the
Trust Indenture Act of 1939 and such rules and regulations as so amended.

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

                                                                              11

include each Person who is then a Trustee hereunder; provided, however, that if
at any time there is more than one such Person, "Trustee" as used with respect
to the Securities of any series shall mean only the Trustee with respect to
Securities of that series.

         "United States" means, unless otherwise specified with respect to any
Securities pursuant to Section 3.1, the United States of America (including the
states and the District of Columbia), its territories, its possessions and other
areas subject to its jurisdiction.

         "United States person" means, unless otherwise specified with respect
to any Securities pursuant to Section 3.1, an individual who is a citizen or
resident of the United States, a corporation, partnership or other entity
created or organized in or under the laws of the United States or an estate or
trust the income of which is subject to United States federal income taxation
regardless of its source.

         "Yield to Maturity" means the yield to maturity, computed at the time
of issuance of a Security (or, if applicable, at the most recent redetermination
of interest on such Security) and as set forth in such Security in accordance
with generally accepted United States bond yield computation principles.

         Section 1.2 Compliance Certificates and Opinions. Upon any application
or request by the Company to the Trustee to take any action under any provision
of this Indenture, the Company shall furnish to the Trustee an 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, if any, have been complied with, except that in the case of any such
application or request as to which the furnishing of such documents is
specifically required by any provision of this Indenture relating to such
particular application or request, no additional certificate or opinion need be
furnished.

         Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (including certificates
delivered pursuant to Section 10.8) shall include:

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

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

                  (3) a statement that, in the opinion of each such individual,
         he has made such examination or investigation as is necessary to enable
         him to
<PAGE>

                                                                              12

        express an informed opinion as to whether or not such condition or
        covenant has been complied with; and

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

         Section 1.3 Form of Documents Delivered to Trustee. In any case where
several matters are required to be certified by, or covered by an opinion of,
any specified Person, it is not necessary that all such matters be certified by,
or covered by the opinion of, only one such Person, or that they be so certified
or covered by only one document, but one such Person may certify or give an
opinion as to some matters and one or more other such Persons as to other
matters, and any such Person may certify or give an opinion as to such matters
in one or several documents.

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

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

         Section 1.4 Acts of Holders. (a) Any request, demand, authorization,
direction, notice, consent, waiver or other action provided by this Indenture to
be given or taken by Holders of the Outstanding Securities of all series or one
or more series, as the case may be, may be embodied in and evidenced by one or
more instruments of substantially similar tenor signed by such Holders in person
or by agents duly appointed in writing. If Securities of a series are issuable
as Bearer Securities, any request, demand, authorization, direction, notice,
consent, waiver or other action provided by this Indenture to be given or taken
by Holders of Securities of such series may, alternatively, be embodied in and
evidenced by the record of Holders of Securities of such series voting in favor
thereof, either in person or by proxies duly appointed in writing, at any
meeting of Holders of Securities of such series duly called and held in
accordance with the provisions of the supplemental indenture with respect to
such series, or a combination of such instruments and any such record. Except as
herein otherwise expressly provided, such action shall become effective when
such instrument or instruments or record or both are delivered to the Trustee
and, where it is hereby expressly required, to the Company. Such instrument
<PAGE>

                                                                              13

or instruments and any such record (and the action embodied therein and
evidenced thereby) are herein sometimes referred to as the "Act" of the Holders
signing such instrument or instruments or so voting at any such meeting. Proof
of execution of any such instrument or of a writing appointing any such agent,
or of the holding by any Person of a Security, shall be sufficient for any
purpose of this Indenture and conclusive in favor of the Trustee and the Company
and any agent of the Trustee or the Company, if made in the manner provided in
this Section 1.4.

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

         (c) The ownership of Registered Securities shall be proved by the
Security Register.

         (d) The ownership of Bearer Securities may be proved by the production
of such Bearer Securities or by a certificate executed, as depositary, by any
trust company, bank, banker or other depositary, wherever situated, if such
certificate shall be deemed by the Trustee to be satisfactory, showing that at
the date therein mentioned such Person had on deposit with such depositary, or
exhibited, the Bearer Securities therein described; or such facts may be proved
by the certificate or affidavit of the Person holding such Bearer Securities, if
such certificate or affidavit is deemed by the Trustee to be satisfactory. The
Trustee and the Company may assume that such ownership of any Bearer Security
continues until (1) another certificate or affidavit bearing a later date issued
in respect of the same Bearer Security is produced, or (2) such Bearer Security
is produced to the Trustee by some other Person, or (3) such Bearer Security is
surrendered in exchange for a Registered Security, or (4) such Bearer Security
is no longer Outstanding. The ownership of Bearer Securities may also be proved
in any other manner which the Trustee deems sufficient.

                  (e) (i) If the Company shall solicit from the Holders of
         Registered Securities any request, demand, authorization, direction,
         notice, consent, waiver or other Act, the Company may, at its option,
         in or pursuant to a Board Resolution, fix in advance a record date for
         the determination of Holders entitled to give such request, demand,
         authorization, direction, notice, consent, waiver or other Act, but the
         Company shall have no obligation to do so; provided that the Company
         shall not be entitled to set a record date for, and the provisions of
         this paragraph shall not apply with respect to, the giving
<PAGE>

                                                                              14

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

                  (ii) Subject to clause (e)(iii) below, in the absence of any
         such record date fixed by the Company, regardless as to whether a
         solicitation of the Holders is occurring on behalf of the Company or
         any Holder, the Trustee may, at its option, fix in advance a record
         date for the determination of such Holders entitled to give such
         request, demand, authorization, direction, notice, consent, waiver or
         other Act, but the Trustee shall have no obligation to do so. Any such
         record date shall be a date not more than 30 days prior to the first
         solicitation of Holders generally in connection therewith and no later
         than the date of such solicitation.

                  (iii) The Trustee may set any day as a record date for the
         purpose of determining the Holders of Outstanding Securities entitled
         to join in the giving or making of (i) any Notice of Default, (ii) any
         declaration of acceleration referred to in Section 5.2, (iii) any
         request to institute proceedings referred to in Section 5.7(2), or (iv)
         any direction referred to in Section 5.12. If any record date is set
         pursuant to this paragraph, the Holders of Outstanding Securities on
         such record date, and no other Holders, shall be entitled to join in
         such notice, declaration, request or direction, whether or not such
         Holders remain Holders after such record date; provided that no such
         action shall be effective hereunder unless taken on or prior to any
         applicable expiration date by Holders of the requisite principal amount
         of Outstanding Securities on such record date. Nothing in this
         paragraph shall be construed to prevent the Trustee from setting a new
         record date for any action (whereupon the record date previously set
         shall automatically and without any action by any Person be cancelled
         and of no effect), nor shall anything in this paragraph be construed to
         render ineffective any action taken by Holders of the requisite
         principal amount of Outstanding Securities on the date such action is
         taken. Promptly after any record date is set pursuant to this
         paragraph, the Trustee, at the Company's expense, shall cause
<PAGE>

                                                                              15

         notice of such record date, the proposed action by Holders and the
         applicable expiration date to be given to the Company in writing and to
         each Holder of Securities in the manner set forth in Section 1.6.

         (f) Any request, demand, authorization, direction, notice, consent,
waiver or other Act of the Holder of any Security shall bind every future Holder
of the same Security and the Holder of every Security issued upon the
registration of transfer thereof or in exchange therefor or in lieu thereof in
respect of anything done, omitted or suffered to be done by the Trustee, any
Security Registrar, any Paying Agent, any Authenticating Agent or the Company in
reliance thereon, whether or not notation of such action is made upon such
Security.

         Section 1.5 Notices, etc., to Trustee and Company. Any request, demand,
authorization, direction, notice, consent, waiver or Act of Holders or other
document provided or permitted by this Indenture to be made upon, given or
furnished to, or filed with,

                  (1) the Trustee by any Holder or by the Company shall be
         sufficient for every purpose hereunder if made, given, furnished or
         filed in writing to or with the Trustee at its Corporate Trust Office,
         Attention: Corporate Trust Administration; provided that notices to the
         Trustee shall only be deemed given when actually received by the
         Trustee,

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

         Section 1.6 Notice to Holders; Waiver. Where this Indenture
provides for notice of any event to Holders of Registered Securities by the
Company or the Trustee, such notice shall be sufficiently given (unless
otherwise herein expressly provided) if in writing and mailed, first-class
postage prepaid, to each such Holder affected by such event, at his address as
it appears in the Security Register, not later than the latest date, and not
earlier than the earliest date, prescribed for the giving of such notice. In any
case where notice to Holders of Registered Securities is given by mail, neither
the failure to mail such notice, nor any defect in any notice so mailed, to any
particular Holder shall affect the sufficiency of such notice with respect to
other Holders of Registered Securities or the sufficiency of any notice to
Holders of Bearer Securities given as provided herein. Any notice mailed to a
Holder in the manner herein prescribed shall be conclusively deemed to have been
received by such Holder, whether or not such Holder actually receives such
notice.

         If by reason of the suspension of or irregularities in regular mail
service or by reason of any other cause it shall be impracticable to give such
notice
<PAGE>

                                                                              16

by mail, then such notification to Holders of Registered Securities as shall be
made with the approval of the Trustee shall constitute a sufficient notification
to such Holders for every purpose hereunder.

         Except as otherwise expressly provided herein or otherwise specified
with respect to any Securities pursuant to Section 3.1, where this Indenture
provides for notice to Holders of Bearer Securities of any event, such notice
shall be sufficiently given if published in an Authorized Newspaper in New York
City and in such other city or cities as may be specified in such Securities on
a Business Day, such publication to be not later than the latest date, and not
earlier than the earliest date, prescribed for the giving of such notice. Any
such notice shall be deemed to have been given on the date of such publication
or, if published more than once, on the date of the first such publication.

         If by reason of the suspension of publication of any Authorized
Newspaper or Authorized Newspapers or by reason of any other cause it shall be
impracticable to publish any notice to Holders of Bearer Securities as provided
above, then such notification to Holders of Bearer Securities as shall be given
with the approval of the Trustee shall constitute sufficient notice to such
Holders for every purpose hereunder. Neither the failure to give notice by
publication to any particular Holder of Bearer Securities as provided above, nor
any defect in any notice so published, shall affect the sufficiency of such
notice with respect to other Holders of Bearer Securities or the sufficiency of
any notice to Holders of Registered Securities given as provided herein.

         Any request, demand, authorization, direction, notice, consent or
waiver required or permitted under this Indenture shall be in the English
language, except that any published notice may be in an official language of the
country of publication.

         Where this Indenture provides for notice in any manner, such notice may
be waived in writing by the Person entitled to receive such notice, either
before or after the event, and such waiver shall be the equivalent of such
notice. Waivers of notice by Holders shall be filed with the Trustee, but such
filing shall not be a condition precedent to the validity of any action taken in
reliance upon such waiver.

         Section 1.7 Effect of Headings and Table of Contents. The Article and
Section headings herein and the Table of Contents are for convenience only and
shall not affect the construction hereof.

         Section 1.8 Successors and Assigns. All covenants and agreements in
this Indenture by the Company shall bind its successors and assigns, whether so
expressed or not.

         Section 1.9 Separability Clause. In case any provision in this
Indenture or in any Security or coupon shall be invalid, illegal or
unenforceable, the
<PAGE>

                                                                              17

validity, legality and enforceability of the remaining provisions shall not in
any way be affected or impaired thereby.

         Section 1.10 Benefits of Indenture. Nothing in this Indenture or in the
Securities or coupons, express or implied, shall give to any Person, other than
the parties hereto, any Security Registrar, any Paying Agent, any Authenticating
Agent and their successors hereunder and the Holders any benefit or any legal or
equitable right, remedy or claim under this Indenture.

         Section 1.11 Governing Law. This Indenture and the Securities and
coupons shall be governed by and construed in accordance with the law of the
State of New York without regard to conflicts of laws principles. This Indenture
is subject to the provisions of the TIA that are required to be part of this
Indenture and shall, to the extent applicable, be governed by such provisions.

         Section 1.12 Legal Holidays. In any case where any Interest Payment
Date, Redemption Date, Repurchase Date, sinking fund payment date, Stated
Maturity or Maturity of any Security or the last date on which a Holder has the
right to convert his Securities shall not be a Business Day at any Place of
Payment, then (notwithstanding any other provision of this Indenture or any
Security or coupon other than a provision in the Securities of any series which
specifically states that such provision shall apply in lieu hereof), payment of
interest or any Additional Amounts or principal (and premium, if any) need not
be made at such Place of Payment on such date, but may be made on the next
succeeding Business Day at such Place of Payment with the same force and effect
as if made on the Interest Payment Date, Redemption Date, Repurchase Date or
sinking fund payment date, or at the Stated Maturity or Maturity or on such last
day for conversion; provided that no interest shall accrue on the amount so
payable for the period from and after such Interest Payment Date, Redemption
Date, Repurchase Date, sinking fund payment date, Stated Maturity or Maturity or
on such last day for conversion, as the case may be.

         Section 1.13 Personal Immunity from Liability for Incorporators,
Stockholders, Etc. No recourse shall be had for the payment of the principal of
or premium, if any, or interest, if any, on any Security, or for any claim based
thereon, or otherwise in respect of any Security, or based on or in respect of
this Indenture or any indenture supplemental hereto, against any incorporator,
or against any past, present or future stockholder, director or officer, as
such, of the Company or of 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, all such liability being expressly waived and released as
a condition of, and as consideration for, the execution of this Indenture and
the issue of Securities.

         Section 1.14 Conflict with Trust Indenture Act. If any provision hereof
limits, qualifies or conflicts with a provision of the TIA which is required
under such Act to be a part of and govern this Indenture, the latter provision
shall control. If any provision of this Indenture modifies or excludes any
provision of the TIA which may be
<PAGE>

                                                                              18

so modified or excluded, the latter provision shall be deemed to apply to this
Indenture as so modified or to be excluded, as the case may be. To the extent a
Security conflicts with a provision in the Indenture, the Indenture governs.

                                    ARTICLE 2

                                SECURITIES FORMS

         Section 2.1 Forms of Securities. The Registered Securities, if any, of
each series and the Bearer Securities, if any, of each series and related
coupons shall be in substantially the forms as shall be established in one or
more indentures supplemental hereto or approved from time to time by or pursuant
to a Board Resolution in accordance with Section 3.1, shall have such
appropriate insertions, omissions, substitutions and other variations as are
required or permitted by this Indenture or any indenture supplemental hereto,
and may have such letters, numbers or other marks of identification or
designation and such legends or endorsements placed thereon 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 on which the Securities
may be listed or any depositary therefor, or to conform to usage or as may,
consistently herewith, be determined by the officers executing such Securities,
as evidenced by their execution of the Securities.

         Unless otherwise specified as contemplated by Section 3.1, Bearer
Securities shall have interest coupons attached.

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

         Section 2.2 Form of Trustee's Certificate of Authentication. Subject to
Section 6.12, the Trustee's certificate of authentication shall be in
substantially the following form:

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


                             as Trustee


                             By
                              Authorized Signatory
<PAGE>

                                                                              19

         Section 2.3 Securities Issuable in Global Form. If Securities of or
within a series are issuable in global form, as specified as contemplated by
Section 3.1, then, notwithstanding clause (8) of Section 3.1 and the provisions
of Section 3.2, any such Security shall represent such of the Outstanding
Securities of such series as shall be specified therein and may provide that it
shall represent the aggregate amount of Outstanding Securities of such series
from time to time endorsed thereon and that the aggregate amount of Outstanding
Securities of such series represented thereby may from time to time be increased
or decreased to reflect exchanges. Any endorsement of a Security in global form
to reflect the amount, or any increase or decrease in the amount, of Outstanding
Securities represented thereby shall be made by the Trustee in such manner and
upon instructions given by such Person or Persons as shall be specified therein
or in the Company Order to be delivered to the Trustee pursuant to Section 3.3
or 3.4. Subject to the provisions of Section 3.3 and, if applicable, Section
3.4, the Trustee shall deliver and redeliver any Security in permanent global
form in the manner and upon instructions given by the Person or Persons
specified therein or in the applicable Company Order. If a Company Order
pursuant to Section 3.3 or 3.4 has been, or simultaneously is, delivered, any
instructions by the Company with respect to endorsement or delivery or
redelivery of a Security in global form shall be in writing but need not comply
with Section 1.2 and need not be accompanied by an Opinion of Counsel.

         The provisions of the last sentence of Section 3.3 shall apply to any
Security represented by a Security in global form if such Security was never
issued and sold by the Company and the Company delivers to the Trustee the
Security in global form together with written instructions (which need not
comply with Section 1.2 and need not be accompanied by an Opinion of Counsel)
with regard to the reduction in the principal amount of Securities represented
thereby, together with the written statement contemplated by the last sentence
of Section 3.3.

         Notwithstanding the provisions of Section 3.7, unless otherwise
specified as contemplated by Section 3.1, payment of principal of and any
premium and interest on any Security in permanent global form shall be made to
the Person or Persons specified therein.

         Notwithstanding the provisions of Section 3.8 and except as provided in
the preceding paragraph, the Company, the Trustee and any agent of the Company
and the Trustee shall treat as the Holder of such principal amount of
Outstanding Securities represented by a permanent global Security (i) in the
case of a permanent global Security in registered form, the Holder of such
permanent global Security in registered form, or (ii) in the case of a permanent
global Security in bearer form, Euroclear or CEDEL.
<PAGE>

                                                                              20

                                    ARTICLE 3

                                 THE SECURITIES

         Section 3.1 Amount Unlimited; Issuable in Series. The aggregate
principal amount of Securities which may be authenticated and delivered under
this Indenture is unlimited.

         The Securities may be issued in one or more series. There shall be
established in one or more Board Resolutions or pursuant to authority granted by
one or more Board Resolutions and, subject to Section 3.3, set forth, or
determined in the manner provided, in an Officers' Certificate, or established
in one or more indentures supplemental hereto, prior to the issuance of
Securities of any series, any or all of the following, as applicable (each of
which (except for the matters set forth in clauses (1), (2) and (22) below) if
so provided, may be determined from time to time by the Company with respect to
unissued Securities of the series when issued from time to time):

                  (1) the title of the Securities of the series (which shall
         distinguish the Securities of such series from all other series of
         Securities);

                  (2) any limit upon the aggregate principal amount of the
         Securities of the series that may be authenticated and delivered under
         this Indenture (except for Securities authenticated and delivered upon
         registration of transfer of, or in exchange for, or in lieu of, other
         Securities of the series pursuant to Section 3.4, 3.5, 3.6, 9.6, 11.7
         or 13.6);

                  (3) the Person to whom any interest on any Registered Security
         of the series shall be payable, if other than the Person in whose name
         that Security (or one or more Predecessor Securities) is registered at
         the close of business on the Regular Record Date for such interest, the
         manner in which, or the Person to whom, any interest on any Bearer
         Security of the series shall be payable, if otherwise than upon
         presentation and surrender of the coupons appertaining thereto as they
         severally mature, and the extent to which, or the manner in which, any
         interest payable on a temporary global Security on an Interest Payment
         Date will be paid if other than in the manner provided in Section 3.4;

                  (4) the date or dates, or the method by which such date or
         dates will be determined, on which the principal and premium, if any,
         of the Securities of the series shall be payable or the method of that
         determination or the right to defer any interest payments;

                  (5) the rate or rates (which may be fixed or variable) at
         which the Securities of the series shall bear interest, if any, or the
         method by which such rate or rates shall be determined, the date or
         dates from which such interest
<PAGE>

                                                                              21

         shall accrue or the method by which such date or dates shall be
         determined, the Interest Payment Dates on which such interest will be
         payable and the Regular Record Date, if any, for the interest payable
         on any Registered Security on any Interest Payment Date, or the method
         by which such date shall be determined, and the basis upon which
         interest shall be calculated if other than that of a 360-day year of
         twelve 30-day months;

                  (6) the place or places, if any, other than or in addition to
         the Borough of Manhattan, New York City, where the principal of (and
         premium, if any), interest, if any, on, and Additional Amounts, if any,
         payable in respect of, Securities of the series shall be payable, any
         Registered Securities of the series may be surrendered for registration
         of transfer, exchange or conversion and notices or demands to or upon
         the Company in respect of the Securities of the series and this
         Indenture may be served;

                  (7) the period or periods within which, the date or dates on
         which, the price or prices at which, the currency or currencies,
         currency unit or units or composite currency or currencies in which,
         and other terms and conditions upon which Securities of the series may
         be redeemed, in whole or in part, at the option of the Company, if the
         Company is to have the option;

                  (8) the obligation, if any, of the Company to redeem, repay or
         purchase Securities of the series pursuant to any sinking fund or
         analogous provision or at the option of a Holder thereof, and the
         period or periods within which or the date or dates on which, the price
         or prices at which, the currency or currencies, currency unit or units
         or composite currency or currencies in which, and other terms and
         conditions upon which Securities of the series shall be redeemed,
         repaid or purchased, in whole or in part, pursuant to such obligation;

                  (9) the terms, if any, upon which the Securities of the series
         may be convertible into or exchanged for Securities of another series,
         Common Stock or Preferred Stock, as the case may be, and the terms and
         conditions upon which such conversion shall be effected (including the
         initial conversion or exchange price or rate, the conversion or
         exchange period, any adjustment of the applicable conversion price and
         any requirements relative to the reservation of such shares for
         purposes of conversion or exchange);

                  (10) if other than denominations of $1,000 and any integral
         multiple thereof, the denominations in which any Registered Securities
         of the series shall be issuable and, if other than the denomination of
         $5,000, the denomination or denominations in which any Bearer
         Securities of the series shall be issuable;

                  (11) if other than Dollars, the Foreign Currency or Currencies
         in which payment of the principal of (and premium, if any) or interest
         or
<PAGE>

                                                                              22

         Additional Amounts, if any, on the Securities of the series shall be
         payable or in which the Securities of the series shall be denominated;

                  (12) whether the amount of payments of principal of (and
         premium, if any) or interest, if any, on the Securities of the series
         may be determined with reference to an index, formula or other method
         (which index, formula or method may be based, without limitation, on
         one or more currencies, currency units, composite currencies,
         commodities, equity indices or other indices), and the manner in which
         such amounts shall be determined;

                  (13) if the principal amount payable at the stated maturity of
         the Securities of the series will not be determinable as of any one or
         more dates before the Stated Maturity, the amount that will be deemed
         to be the principal amount as of any date for any purpose, including
         the principal amount thereof which will be due and payable upon any
         Maturity other than the Stated Maturity or which will be deemed to be
         outstanding as of any date (or, in any such case, the manner in which
         the deemed principal amount is to be determined), and if necessary, the
         manner of determining the equivalent thereof in United States currency;

                  (14) whether the principal of (and premium, if any) or
         interest or Additional Amounts, if any, on the Securities of the series
         are to be payable, at the election of the Company or a Holder thereof,
         in a currency or currencies, currency unit or units or composite
         currency or currencies other than that in which such Securities are
         denominated or stated to be payable, the period or periods within
         which, and the terms and conditions upon which, such election may be
         made, and the time and manner of, and identity of the exchange rate
         agent with responsibility for, determining the exchange rate between
         the currency or currencies, currency unit or units or composite
         currency or currencies in which such Securities are denominated or
         stated to be payable and the currency or currencies, currency unit or
         units or composite currency or currencies in which such Securities are
         to be so payable;

                  (15) if other than the principal amount thereof, the portion
         of the principal amount of Securities of the series that shall be
         payable upon declaration of acceleration of the Maturity thereof
         pursuant to Section 5.2 or, if applicable, the portion of the principal
         amount of Securities of the series that is convertible in accordance
         with the provisions of this Indenture, or the method by which such
         portion shall be determined;

                  (16) the applicability of, and any addition to or change in,
         the covenants and definitions then set forth in the Indenture or in the
         terms then set forth in such Indenture relating to permitted
         consolidations, mergers or sales of assets;
<PAGE>

                                                                              23

                  (17) the applicability, if any, of Section 14.2 and/or Section
         14.3 to the Securities of the series and any provisions in modification
         of, in addition to or in lieu of any of the provisions of Article 14;

                  (18)(a) whether Securities of the series are to be issuable as
         Registered Securities, Bearer Securities (with or without coupons) or
         both, any restrictions applicable to the offer, sale or delivery of
         Bearer Securities and the terms upon which Bearer Securities of the
         series may be exchanged for Registered Securities of the series and
         vice versa (if permitted by applicable laws and regulations), whether
         any Securities of the series are to be issuable initially in temporary
         global form and whether any Securities of the series are to be issuable
         in permanent global form with or without coupons and, if so, whether
         beneficial owners of interests in any such permanent global Security
         may exchange such interests for Securities of such series and of like
         tenor of any authorized form and denomination and the circumstances
         under which any such exchanges may occur, if other than in the manner
         provided in Section 3.5, and, if Registered Securities of the series
         are to be issuable as a global Security, the identity of the depositary
         for such series;

                  (18)(b) the date as of which any Bearer Securities of the
         series and any temporary global Security representing Outstanding
         Securities of the series shall be dated if other than the date of
         original issuance of the first Security of the series to be issued;

                  (18)(c) if the Securities of such series are to be issuable in
         definitive form (whether upon original issue or upon exchange of a
         temporary Security of such series) only upon receipt of certain
         certificates or other documents or satisfaction of other conditions,
         then the form and/or terms of such certificates, documents or
         conditions;

                  (19) the appointment of any trustee, any authenticating or
         paying agents, transfer agent or registrars;

                  (20) the terms, if any, of any guarantee of the payment of
         principal, premium and interest with respect to the Securities of the
         series and any corresponding changes to the provisions of the
         applicable indenture as then in effect;

                  (21) the terms, if any, of the transfer, mortgage, pledge or
         assignment as security for the Securities of the series of any
         properties, assets, moneys, proceeds, securities or other collateral,
         including whether certain provisions of the TIA are applicable and any
         corresponding changes to provisions of the applicable indenture as then
         in effect and including provisions addressing priority, perfection and
         escrow arrangements related to the security interest;
<PAGE>

                                                                              24

                  (22) any deletions from, modifications of or additions to the
         Events of Default or covenants of the Company with respect to
         Securities of the series, whether or not such Events of Default or
         covenants are consistent with the Events of Default or covenants set
         forth herein, and any change in the right of the Trustee or the Holders
         of the Securities to declare the principal premium and interest with
         respect to debt securities due and payable;

                  (23) provisions, if any, granting special rights to the
         Holders of Securities of the series upon the occurrence of such events
         as may be specified;

                  (24) if the Securities of the series are to be issued upon the
         exercise of warrants, the time, manner and place for such Securities to
         be authenticated and delivered;

                  (25) whether and under what circumstances the Company will pay
         Additional Amounts as contemplated by Section 10.8 on the Securities of
         the series to any Holder who is not a United States person (including
         any modification to the definition of such term) in respect of any tax,
         assessment or governmental charge and, if so, whether the Company will
         have the option to redeem such Securities rather than pay such
         Additional Amounts (and the terms of any such option); and

                  (26) any other terms of the series.

         All Securities of any one series and the coupons appertaining to any
Bearer Securities of such series shall be substantially identical except, in the
case of Registered Securities, as to denomination and except as may otherwise be
provided in or pursuant to such Board Resolution (subject to Section 3.3) and
set forth in such Officers' Certificate or in any such indenture supplemental
hereto. All Securities of any one series need not be issued at the same time
and, unless otherwise provided, a series may be reopened, without the consent of
the Holders, for issuances of additional Securities of such series.

         If any of the terms of the Securities of any series are established by
action taken pursuant to one or more Board Resolutions, a copy of an appropriate
record of such action(s) shall be certified by the Secretary or an Assistant
Secretary of the Company and delivered to the Trustee at or prior to the
delivery of the Officers' Certificate setting forth the terms of the Securities
of such series.

         Section 3.2 Denominations. The Securities of each series shall be
issuable in such denominations as shall be specified as contemplated by Section
3.1. With respect to Securities of any series denominated in Dollars, in the
absence of any such provisions with respect to the Securities of any series, the
Registered Securities of such series, other than Registered Securities issued in
global form (which may be of any denomination), shall be issuable in
denominations of $1,000 and any integral
<PAGE>

                                                                              25

multiple thereof and the Bearer Securities of such series, other than Bearer
Securities issued in global form (which may be of any denomination), shall be
issuable in a denomination of $5,000.

         Section 3.3 Execution, Authentication, Delivery and Dating. The
Securities and any coupons appertaining thereto shall be executed on behalf of
the Company by the Chief Executive Officer, Chief Financial Officer, the
President or a Vice President of the Company and attested by its Secretary or
one of its Assistant Secretaries. The signature of any of these individuals on
the Securities and coupons may be manual or facsimile signatures of the present
or any future such authorized officer and may be imprinted or otherwise
reproduced on the Securities.

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

         At any time and from time to time after the execution and delivery of
this Indenture, the Company may deliver Securities of any series, together with
any coupon appertaining thereto, executed by the Company to the Trustee for
authentication, together with a Company Order for the authentication and
delivery of such Securities, and the Trustee in accordance with the Company
Order shall authenticate and deliver such Securities; provided, however, that,
in connection with its original issuance, no Bearer Security shall be mailed or
otherwise delivered to any location in the United States; and provided further
that, unless otherwise specified with respect to any series of Securities
pursuant to Section 3.1, a Bearer Security may be delivered in connection with
its original issuance only if the Person entitled to receive such Bearer
Security shall have furnished a certificate to Euroclear or CEDEL, as the case
may be, in the form set forth in Exhibit A-1 to this Indenture or such other
certificate as may be specified with respect to any series of Securities
pursuant to Section 3.1, dated no earlier than 15 days prior to the earlier of
the date on which such Bearer Security is delivered and the date on which any
temporary Security first becomes exchangeable for such Bearer Security in
accordance with the terms of such temporary Security and this Indenture. If any
Security shall be represented by a permanent global Bearer Security, then, for
purposes of this Section and Section 3.4, the notation of a beneficial owner's
interest therein upon original issuance of such Security or upon exchange of a
portion of a temporary global Security shall be deemed to be delivery in
connection with its original issuance of such beneficial owner's interest in
such permanent global Security. Except as permitted by Section 3.6, the Trustee
shall not authenticate and deliver any Bearer Security unless all appurtenant
coupons for interest then matured have been detached and cancelled.

         If all the Securities of any series are not to be issued at one time
and if the Board Resolution or supplemental indenture establishing such series
shall so
<PAGE>

                                                                              26

permit, such Company Order may set forth procedures acceptable to the Trustee
for the issuance of such Securities and determining the terms of particular
Securities of such series, such as interest rate or formula, maturity date, date
of issuance and date from which interest shall accrue. In authenticating such
Securities, and accepting the additional responsibilities under this Indenture
in relation to such Securities, the Trustee shall be entitled to receive, and
(subject to TIA Section 315(a) through 315(d)) shall be fully protected in
relying upon,

                  (i) an Opinion of Counsel stating that:

                      (a) the form or forms of such Securities and any coupons
        have been established in conformity with the provisions of this
        Indenture;

                      (b) the terms of such Securities and any coupons have been
        established in conformity with the provisions of this Indenture; and

                      (c) such Securities, together with any coupons
        appertaining thereto, when completed by appropriate insertions and
        executed and delivered by the Company to the Trustee for authentication
        in accordance with this Indenture, authenticated and delivered by the
        Trustee in accordance with this Indenture and issued by the Company in
        the manner and subject to any conditions specified in such Opinion of
        Counsel, will constitute legal, valid and binding obligations of the
        Company, enforceable in accordance with their terms, subject to
        applicable bankruptcy, insolvency, moratorium, reorganization and other
        similar laws of general applicability relating to or affecting the
        enforcement of creditors' rights generally and to general equitable
        principles; and

                  (ii) an Officers' Certificate stating that all conditions
precedent provided for in this Indenture relating to the issuance of the
Securities have been complied with and that, to the best of the knowledge of the
signers of such certificate, no Event of Default with respect to any of the
Securities shall have occurred and be continuing.

If such form or terms have been so established, the Trustee shall not be
required to authenticate such Securities if the issue of such Securities
pursuant to this Indenture will affect the Trustee's own rights, duties,
obligations or immunities under the Securities and this Indenture or otherwise
in a manner which is not reasonably acceptable to the Trustee.

         Notwithstanding the provisions of Section 3.1 and of the preceding
paragraph, if all the Securities of any series are not to be issued at one time,
it shall not be necessary to deliver an Officers' Certificate otherwise required
pursuant to Section 3.1 or a Company Order, or an Opinion of Counsel or an
Officers' Certificate otherwise required pursuant to the preceding paragraph at
the time of issuance of each Security of such series; provided that such order,
opinion and certificates, with
<PAGE>

                                                                              27

appropriate modifications to cover such future issuances, shall be delivered at
or before the time of issuance of the first Security of such series.

         Each Registered Security shall be dated the date of its authentication
and each Bearer Security shall be dated as of the date specified as contemplated
by Section 3.1.

         No Security or coupon shall be entitled to any benefit under this
Indenture or be valid or obligatory for any purpose unless there appears on such
Security or Security to which such coupon appertains a certificate of
authentication substantially in the form provided for herein duly executed by
the Trustee by manual signature of an authorized signatory, and such certificate
upon any Security shall be conclusive evidence, and the only evidence, that such
Security has been duly authenticated and delivered hereunder and is entitled to
the benefits of this Indenture. Notwithstanding the foregoing, if any Security
shall have been authenticated and delivered hereunder but never issued and sold
by the Company, and the Company shall deliver such Security to the Trustee for
cancellation as provided in Section 3.9 together with a written statement (which
need not comply with Section 1.2 and need not be accompanied by an Opinion of
Counsel) stating that such Security has never been issued and sold by the
Company, for all purposes of this Indenture such Security shall be deemed never
to have been authenticated and delivered hereunder and shall never be entitled
to the benefits of this Indenture.

         Section 3.4 Temporary Securities. (a) Pending the preparation of
definitive Securities of any series, the Company may execute, and upon Company
Order the Trustee shall authenticate and deliver, temporary Securities which are
printed, lithographed, typewritten, mimeographed or otherwise produced, in any
authorized denomination, substantially of the tenor of the definitive Securities
in lieu of which they are issued, in registered form, or, if authorized, in
bearer form with one or more coupons or without coupons, and with such
appropriate insertions, omissions, substitutions and other variations as the
officers executing such Securities may determine, as conclusively evidenced by
their execution of such Securities. In the case of Securities of any series,
such temporary Securities may be in global form.

         Except in the case of temporary Securities in global form (which shall
be exchanged in accordance with Section 3.4(b) or as otherwise provided in or
pursuant to a Board Resolution) if temporary Securities of any series are
issued, the Company will cause definitive Securities of that series to be
prepared without unreasonable delay. After the preparation of definitive
Securities of such series, the temporary Securities of such series shall be
exchangeable for definitive Securities of such series upon surrender of the
temporary Securities of such series at the office or agency of the Company in a
Place of Payment for that series, without charge to the Holder. Upon surrender
for cancellation of any one or more temporary Securities of any series
(accompanied by any non-matured coupons appertaining thereto) the Company shall
execute and the Trustee shall authenticate and deliver in exchange therefor a
like principal amount of definitive Securities of the same series of
<PAGE>

                                                                              28

authorized denominations; provided, however, that no definitive Bearer Security
shall be delivered in exchange for a temporary Registered Security; and provided
further that a definitive Bearer Security shall be delivered in exchange for a
temporary Bearer Security only in compliance with the conditions set forth in
Section 3.3. Until so exchanged, the temporary Securities of any series shall be
entitled to in all respects the same benefits under this Indenture as definitive
Securities of such series.

         (b) Unless otherwise provided in or pursuant to a Board Resolution,
this Section 3.4(b) shall govern the exchange of temporary Securities issued in
global form other than through the facilities of The Depository Trust Company
("DTC"). If any such temporary Security is issued in global form, then such
temporary global Security shall, unless otherwise provided therein, be delivered
to the London office of a depositary or common depositary (the "Common
Depositary"), for the benefit of Euroclear and CEDEL, for credit to the
respective accounts of the beneficial owners of such Securities (or to such
other accounts as they may direct).

         Without unnecessary delay but in any event not later than the date
specified in, or determined pursuant to the terms of, any such temporary global
Security (the "Exchange Date"), the Company shall deliver to the Trustee
definitive Securities, in aggregate principal amount equal to the principal
amount of such temporary global Security, executed by the Company. On or after
the Exchange Date, such temporary global Security shall be surrendered by the
Common Depositary to the Trustee, as the Company's agent for such purpose, to be
exchanged, in whole or from time to time in part, for definitive Securities
without charge, and the Trustee shall authenticate and deliver, in exchange for
each portion of such temporary global Security, an equal aggregate principal
amount of definitive Securities of the same series of authorized denominations
and of like tenor as the portion of such temporary global Security to be
exchanged. The definitive Securities to be delivered in exchange for any such
temporary global Security shall be in bearer form, registered form, permanent
global bearer form or permanent global registered form, or any combination
thereof, as specified as contemplated by Section 3.1, and, if any combination
thereof is so specified, as requested by the beneficial owner thereof; provided,
however, that, unless otherwise specified in such temporary global Security,
upon such presentation by the Common Depositary, such temporary global Security
is accompanied by a certificate dated the Exchange Date or a subsequent date and
signed by Euroclear as to the portion of such temporary global Security held for
its account then to be exchanged and a certificate dated the Exchange Date or a
subsequent date and signed by CEDEL as to the portion of such temporary global
Security held for its account then to be exchanged, each in the form set forth
in Exhibit A-2 to this Indenture or in such other form as may be established
pursuant to Section 3.1; and provided further that definitive Bearer Securities
shall be delivered in exchange for a portion of a temporary global Security only
in compliance with the requirements of Section 3.3.

         Unless otherwise specified in such temporary global Security, the
interest of a beneficial owner of Securities of a series in a temporary global
Security
<PAGE>

                                                                              29

shall be exchanged for definitive Securities of the same series and of like
tenor following the Exchange Date when the account holder instructs Euroclear or
CEDEL, as the case may be, to request such exchange on his behalf and delivers
to Euroclear or CEDEL, as the case may be, a certificate in the form set forth
in Exhibit A-1 to this Indenture (or in such other form as may be established
pursuant to Section 3.1), dated no earlier than 15 days prior to the Exchange
Date, copies of which certificate shall be available from the offices of
Euroclear and CEDEL, the Trustee, any Authenticating Agent appointed for such
series of Securities and each Paying Agent. Unless otherwise specified in such
temporary global Security, any such exchange shall be made free of charge to the
beneficial owners of such temporary global Security, except that a Person
receiving definitive Securities must bear the cost of insurance, postage,
transportation and the like unless such Person takes delivery of such definitive
Securities in person at the offices of Euroclear or CEDEL. Definitive Securities
in bearer form to be delivered in exchange for any portion of a temporary global
Security shall be delivered only outside the United States.

         Until exchanged in full as hereinabove provided, the temporary
Securities of any series shall in all respects be entitled to the same benefits
under this Indenture as definitive Securities of the same series and of like
tenor authenticated and delivered hereunder, except that, unless otherwise
specified as contemplated by Section 3.1, interest payable on a temporary global
Security on an Interest Payment Date for Securities of such series occurring
prior to the applicable Exchange Date shall be payable to Euroclear and CEDEL on
such Interest Payment Date upon delivery by Euroclear and CEDEL to the Trustee
of a certificate or certificates in the form set forth in Exhibit A-2 to this
Indenture (or in such other forms as may be established pursuant to Section
3.1), for credit without further interest on or after such Interest Payment Date
to the respective accounts of Persons who are the beneficial owners of such
temporary global Security on such Interest Payment Date and who have each
delivered to Euroclear or CEDEL, as the case may be, a certificate dated no
earlier than 15 days prior to the Interest Payment Date occurring prior to such
Exchange Date in the form set forth as Exhibit A-1 to this Indenture (or in such
other forms as may be established pursuant to Section 3.1). Notwithstanding
anything to the contrary herein contained, the certifications made pursuant to
this paragraph shall satisfy the certification requirements of the preceding two
paragraphs of this Section 3.4(b) and of the third paragraph of Section 3.3 of
this Indenture and the interests of the Persons who are the beneficial owners of
the temporary global Security with respect to which such certification was made
will be exchanged for definitive Securities of the same series and of like tenor
on the Exchange Date or the date of certification if such date occurs after the
Exchange Date, without further act or deed by such beneficial owners. Except as
otherwise provided in this paragraph, no payments of principal or interest owing
with respect to a beneficial interest in a temporary global Security will be
made unless and until such interest in such temporary global Security shall have
been exchanged for an interest in a definitive Security. Any interest so
received by Euroclear and CEDEL and not paid as herein provided shall be
returned to the Trustee prior to the expiration of two years after such Interest
Payment Date in order to be repaid to the Company.
<PAGE>

                                                                              30

         Section 3.5 Registration, Registration of Transfer and Exchange. The
Company shall cause to be kept at the Corporate Trust Office of the Trustee or
in any office or agency of the Company in a Place of Payment a register for each
series of Securities (the registers maintained in such office or in any such
office or agency of the Company in a Place of Payment being herein sometimes
referred to collectively as the "Security Register") in which, subject to such
reasonable regulations as it may prescribe, the Company shall provide for the
registration of Registered Securities and of transfers of Registered Securities.
The Security Register shall be in written form or any other form capable of
being converted into written form within a reasonable time. The Trustee, at its
Corporate Trust Office, is hereby appointed "Security Registrar" for the purpose
of registering Registered Securities and transfers of Registered Securities on
such Security Register as herein provided. In the event that the Trustee shall
cease to be Security Registrar, it shall have the right to examine the Security
Register at all reasonable times.

         Subject to the provisions of this Section 3.5, upon surrender for
registration of transfer of any Registered Security of any series at any office
or agency of the Company in a Place of Payment for that series, the Company
shall execute, and the Trustee shall authenticate and deliver, in the name of
the designated transferee or transferees, one or more new Registered Securities
of the same series, of any authorized denominations and of a like aggregate
principal amount, bearing a number not contemporaneously outstanding, and
containing identical terms and provisions.

         Subject to the provisions of this Section 3.5, at the option of the
Holder, Registered Securities of any series may be exchanged for other
Registered Securities of the same series, of any authorized denomination or
denominations and of a like aggregate principal amount, containing identical
terms and provisions, upon surrender of the Registered Securities to be
exchanged at any such office or agency. Whenever any such Registered Securities
are so surrendered for exchange, the Company shall execute, and the Trustee
shall authenticate and deliver, the Registered Securities which the Holder
making the exchange is entitled to receive. Unless otherwise specified with
respect to any series of Securities as contemplated by Section 3.1, Bearer
Securities may not be issued in exchange for Registered Securities.

         If (but only if) permitted by the applicable Board Resolution and
(subject to Section 3.3) set forth in the applicable Officers' Certificate, or
in any indenture supplemental hereto, delivered as contemplated by Section 3.1,
at the option of the Holder, Bearer Securities of any series may be exchanged
for Registered Securities of the same series of any authorized denominations and
of a like aggregate principal amount and tenor, upon surrender of the Bearer
Securities to be exchanged at any such office or agency, with all unmatured
coupons and all matured coupons in default thereto appertaining. If the Holder
of a Bearer Security is unable to produce any such unmatured coupon or coupons
or matured coupon or coupons in default, any such permitted exchange may be
effected if the Bearer Securities are accompanied by
<PAGE>

                                                                              31

payment in funds acceptable to the Company in an amount equal to the face amount
of such missing coupon or coupons, or the surrender of such missing coupon or
coupons may be waived by the Company and the Trustee if there is furnished to
them such security or indemnity as they may require to save each of them and any
Paying Agent harmless. If thereafter the Holder of such Security shall surrender
to any Paying Agent any such missing coupon in respect of which such a payment
shall have been made, such Holder shall be entitled to receive the amount of
such payment; provided, however, that, except as otherwise provided in Section
10.2, interest represented by coupons shall be payable only upon presentation
and surrender of those coupons at an office or agency located outside the United
States. Notwithstanding the foregoing, in case a Bearer Security of any series
is surrendered at any such office or agency in a permitted exchange for a
Registered Security of the same series and like tenor after the close of
business at such office or agency on (i) any Regular Record Date and before the
opening of business at such office or agency on the relevant Interest Payment
Date, or (ii) any Special Record Date and before the opening of business at such
office or agency on the related proposed date for payment of Defaulted Interest,
such Bearer Security shall be surrendered without the coupon relating to such
Interest Payment Date or proposed date for payment, as the case may be, and
interest or Defaulted Interest, as the case may be, will not be payable on such
Interest Payment Date or proposed date for payment, as the case may be, in
respect of the Registered Security issued in exchange for such Bearer Security,
but will be payable only to the Holder of such coupon when due in accordance
with the provisions of this Indenture. Whenever any Securities are so
surrendered for exchange, the Company shall execute, and the Trustee shall
authenticate and deliver, the Securities which the Holder making the exchange is
entitled to receive.

         Notwithstanding the foregoing, except as otherwise specified as
contemplated by Section 3.1, any permanent global Security shall be exchangeable
only as provided in this paragraph. If the depositary for any permanent global
Security is DTC, then, unless the terms of such global Security expressly permit
such global Security to be exchanged in whole or in part for definitive
Securities, a global Security may be transferred, in whole but not in part, only
to a nominee of DTC, or by a nominee of DTC to DTC, or to a successor to DTC for
such global Security selected or approved by the Company or to a nominee of such
successor to DTC. If at any time DTC notifies the Company that it is unwilling
or unable to continue as depositary for the applicable global Security or
Securities or if at any time DTC ceases to be a clearing agency registered under
the Securities Exchange Act of 1934 if so required by applicable law or
regulation, the Company shall appoint a successor depositary with respect to
such global Security or Securities. If (x) a successor depositary for such
global Security or Securities is not appointed by the Company within 90 days
after the Company receives such notice or becomes aware of such unwillingness,
inability or ineligibility, (y) an Event of Default has occurred and is
continuing and the beneficial owners representing a majority in principal amount
of the applicable series of Securities represented by such global Security or
Securities advise DTC to cease acting as depositary for such global Security or
Securities or (z) the Company, in its sole discretion, determines at any time
that all Outstanding
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                                                                              32

Securities (but not less than all) of any series issued or issuable in the form
of one or more global Securities shall no longer be represented by such global
Security or Securities, then the Company shall execute, and the Trustee shall
authenticate and deliver, definitive Securities of like series, rank, tenor and
terms in definitive form in an aggregate principal amount equal to the principal
amount of such global Security or Securities. If any beneficial owner of an
interest in a permanent global Security is otherwise entitled to exchange such
interest for Securities of such series and of like tenor and principal amount of
another authorized form and denomination, as specified as contemplated by
Section 3.1 and provided that any applicable notice provided in the permanent
global Security shall have been given, then without unnecessary delay but in any
event not later than the earliest date on which such interest may be so
exchanged, the Company shall execute, and the Trustee shall authenticate and
deliver, definitive Securities in aggregate principal amount equal to the
principal amount of such beneficial owner's interest in such permanent global
Security. On or after the earliest date on which such interests may be so
exchanged, such permanent global Security shall be surrendered for exchange by
DTC or such other depositary as shall be specified in the Company Order with
respect thereto to the Trustee, as the Company's agent for such purpose;
provided, however, that no such exchanges may occur during a period beginning at
the opening of business 15 days before any selection of Securities to be
redeemed and ending on the relevant Redemption Date if the Security for which
exchange is requested may be among those selected for redemption; and provided
further that no Bearer Security delivered in exchange for a portion of a
permanent global Security shall be mailed or otherwise delivered to any location
in the United States. If a Registered Security is issued in exchange for any
portion of a permanent global Security after the close of business at the office
or agency where such exchange occurs on (i) any Regular Record Date and before
the opening of business at such office or agency on the relevant Interest
Payment Date or (ii) any Special Record Date and the opening of business at such
office or agency on the related proposed date for payment of Defaulted Interest,
interest or Defaulted Interest, as the case may be, will not be payable on such
Interest Payment Date or proposed date for payment, as the case may be, in
respect of such Registered Security, but will be payable on such Interest
Payment Date or proposed date for payment, as the case may be, only to the
Person to whom interest in respect of such portion of such permanent global
Security is payable in accordance with the provisions of this Indenture.

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

         Every Registered Security presented or surrendered for registration of
transfer or for exchange or redemption shall (if so required by the Company or
the Security Registrar) be duly endorsed, or be accompanied by a written
instrument of transfer in form satisfactory to the Company and the Security
Registrar, duly executed by the Holder thereof or his attorney duly authorized
in writing.
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                                                                              33

         No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company may require payment of a sum sufficient
to cover any tax or other governmental charge that may be imposed in connection
with any registration of transfer or exchange of Securities, other than
exchanges pursuant to Section 3.4, 9.6, 11.7 or 13.6 not involving any transfer.

         The Company or the Trustee, as applicable, shall not be required (i) to
issue, register the transfer of or exchange any Security if such Security may be
among those selected for redemption during a period beginning at the opening of
business 15 days before selection of the Securities to be redeemed under Section
11.3 and ending at the close of business on (A) if such Securities are issuable
only as Registered Securities, the day of the mailing of the relevant notice of
redemption and (B) if such Securities are issuable as Bearer Securities, the day
of the first publication of the relevant notice of redemption or, if such
Securities are also issuable as Registered Securities and there is no
publication, the mailing of the relevant notice of redemption, or (ii) to
register the transfer of or exchange any Registered Security so selected for
redemption in whole or in part, except, in the case of any Registered Security
to be redeemed in part, the portion thereof not to be redeemed, or (iii) to
exchange any Bearer Security so selected for redemption except that such a
Bearer Security may be exchanged for a Registered Security of that series and
like tenor, provided that such Registered Security shall be simultaneously
surrendered for redemption or (iv) to issue, register the transfer of or
exchange any Security which has been surrendered for repayment at the option of
the Holder, except the portion, if any, of such Security not to be so repaid.

         Section 3.6 Mutilated, Destroyed, Lost and Stolen Securities. If any
mutilated Security or a Security with a mutilated coupon appertaining to it is
surrendered to the Trustee or the Company, together with, in proper cases, such
security or indemnity as may be required by the Company or the Trustee to save
each of them or any agent of either of them harmless, the Company shall execute
and the Trustee shall authenticate and deliver in exchange therefor a new
Security of the same series and principal amount, containing identical terms and
provisions and bearing a number not contemporaneously outstanding, with coupons
corresponding to the coupons, if any, appertaining to the surrendered Security.

         If there shall be delivered to the Company and to the Trustee (i)
evidence to their satisfaction of the destruction, loss or theft of any Security
or coupon and (ii) such security or indemnity as may be required by them to save
each of them and any agent of either of them harmless, then, in the absence of
notice to the Company or the Trustee that such Security or coupon has been
acquired by a bona fide purchaser, the Company shall execute and upon its
request the Trustee shall authenticate and deliver, in lieu of any such
destroyed, lost or stolen Security or in exchange for the Security to which a
destroyed, lost or stolen coupon appertains (with all appurtenant coupons not
destroyed, lost or stolen), a new Security of the same series and principal
amount, containing identical terms and provisions and bearing a number not
contemporaneously outstanding, with coupons corresponding to the
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                                                                              34

coupons, if any, appertaining to such destroyed, lost or stolen Security or to
the Security to which such destroyed, lost or stolen coupon appertains.

         Notwithstanding the provisions of the previous two paragraphs, in case
any such mutilated, destroyed, lost or stolen Security or coupon has become or
is about to become due and payable, the Company in its discretion may, instead
of issuing a new Security, with coupons corresponding to the coupons, if any,
appertaining to such destroyed, lost or stolen Security or to the Security to
which such destroyed, lost or stolen coupon appertains, pay such Security or
coupon; provided, however, that payment of principal of (and premium, if any),
any interest on and any Additional Amounts with respect to, Bearer Securities
shall, except as otherwise provided in Section 10.2, be payable only at an
office or agency located outside the United States and, unless otherwise
specified as contemplated by Section 3.1, any interest on Bearer Securities
shall be payable only upon presentation and surrender of the coupons
appertaining thereto.

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

         Every new Security of any series with its coupons, if any, issued
pursuant to this Section in lieu of any destroyed, lost or stolen Security, or
in exchange for a Security to which a destroyed, lost or stolen coupon
appertains, shall constitute an original additional contractual obligation of
the Company, whether or not the destroyed, lost or stolen Security and its
coupons, if any, or the destroyed, lost or stolen coupon shall be at any time
enforceable by anyone, and shall be entitled to all the benefits of this
Indenture equally and proportionately with any and all other Securities of that
series and their coupons, if any, duly issued hereunder.

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

         Section 3.7 Payment of Interest; Interest Rights Preserved. Except as
otherwise specified with respect to a series of Securities in accordance with
the provisions of Section 3.1, interest on any Registered Security that is
payable, and is punctually paid or duly provided for, on any interest Payment
Date shall be paid to the P