<PAGE>

                                                                     EXHIBIT 4.9



                              GREATER BAY BANCORP
                                   as Issuer



                                   INDENTURE

                           Dated as of July 16, 2001



                              THE BANK OF NEW YORK
                                   as Trustee



                      JUNIOR SUBORDINATED DEBT SECURITIES
<PAGE>

                               TABLE OF CONTENTS
                               -----------------

<TABLE>
<CAPTION>
                                                                                                                  Page
                                                                                                                  ----
<S>                                                                                                            <C>
Parties ........................................................................................................    1
Recitals .......................................................................................................    1
Authorization of Indenture .....................................................................................    1
Compliance with Legal Requirements .............................................................................    1
Purpose of and Consideration for Indenture .....................................................................    1

                                                             ARTICLE I

                                                            DEFINITIONS

SECTION 1.01.  Definitions .....................................................................................    1
Additional Interest ............................................................................................    1
Allocable Amounts ..............................................................................................    1
Authenticating Agent ...........................................................................................    2
Bankruptcy Law .................................................................................................    2
Board of Directors .............................................................................................    2
Board Resolution ...............................................................................................    2
Business Day ...................................................................................................    2
Calculation Agent ..............................................................................................    2
Capital Securities .............................................................................................    2
Capital Securities Guarantee ...................................................................................    2
Capital Treatment Event ........................................................................................    2
Certificate ....................................................................................................    3
Common Securities ..............................................................................................    3
Company ........................................................................................................    3
Comparable Treasury Issue ......................................................................................    3
Comparable Treasury Price ......................................................................................    3
Debt Security or Debt Securities ...............................................................................    3
Debt Security Register .........................................................................................    3
Declaration ....................................................................................................    3
Default ........................................................................................................    3
Defaulted Interest .............................................................................................    3
Deferred Interest ..............................................................................................    3
Event of Default ...............................................................................................    4
Extension Period ...............................................................................................    4
Federal Reserve ................................................................................................    4
Indebtedness Ranking on Parity with the Debt Securities ........................................................    4
Indebtedness Ranking Junior to the Debt Securities .............................................................    4
Indenture ......................................................................................................    4
Institutional Trustee ..........................................................................................    4
Interest Payment Date ..........................................................................................    4
Interest Rate ..................................................................................................    4
Investment Company Event .......................................................................................    4
</TABLE>
                                       i
<PAGE>

<TABLE>
<S>                                                                                                             <C>
LIBOR ..........................................................................................................    5
LIBOR Banking Day ..............................................................................................    5
LIBOR Business Day .............................................................................................    5
LIBOR Determination Date .......................................................................................    5
Liquidation Amount .............................................................................................    5
Maturity Date ..................................................................................................    5
Officers' Certificate ..........................................................................................    5
Opinion of Counsel .............................................................................................    5
outstanding ....................................................................................................    5
Person .........................................................................................................    6
Predecessor Security ...........................................................................................    6
Primary Treasury Dealer ........................................................................................    6
Principal Office of the Trustee ................................................................................    6
Quotation Agent ................................................................................................    6
Redemption Date ................................................................................................    6
Redemption Price ...............................................................................................    6
Reference Treasury Dealer ......................................................................................    7
Reference Treasury Dealer Quotations ...........................................................................    7
Remaining Life .................................................................................................    7
Responsible Officer ............................................................................................    7
Securityholder, holder of Debt Securities ......................................................................    7
Senior Indebtedness ............................................................................................    7
Special Event ..................................................................................................    8
Special Redemption Date ........................................................................................    8
Special Redemption Price .......................................................................................    8
Subsidiary .....................................................................................................    8
Tax Event ......................................................................................................    8
Treasury Rate ..................................................................................................    9
Trust ..........................................................................................................    9
Trust Indenture Act ............................................................................................    9
Trust Securities ...............................................................................................    9
Trustee ........................................................................................................    9
United States ..................................................................................................    9
U.S. Person ....................................................................................................    9
</TABLE>
                                      ii
<PAGE>

<TABLE>
<CAPTION>

                                                            ARTICLE II

                                                          DEBT SECURITIES
<S>                                                                                                              <C>
SECTION 2.01.  Authentication and Dating .......................................................................   10
SECTION 2.02.  Form of Trustee's Certificate of Authentication .................................................   10
SECTION 2.03.  Form of Denomination of Debt Securities .........................................................   11
SECTION 2.04.  Execution of Debt Securities ....................................................................   11
SECTION 2.05.  Exchange and Registration of Transfer of Debt Securities ........................................   11
SECTION 2.06.  Mutilated, Destroyed, Lost or Stolen Debt Securities ............................................   14
SECTION 2.07.  Temporary Debt Securities .......................................................................   15
SECTION 2.08.  Payment of Interest .............................................................................   15
SECTION 2.09.  Cancellation of Debt Securities Paid, etc .......................................................   16
SECTION 2.10.  Computation of Interest .........................................................................   17
SECTION 2.11.  Extension of Interest Payment Period ............................................................   18
SECTION 2.12.  CUSIP Numbers ...................................................................................   19

                                                            ARTICLE III

                                                PARTICULAR COVENANTS OF THE COMPANY

SECTION 3.01.  Payment of Principal, Premium and Interest, Agreed Treatment of the Debt Securities .............   19
SECTION 3.02.  Offices for Notices and Payments, etc ...........................................................   20
SECTION 3.03.  Appointments to Fill Vacancies in Trustee's Office ..............................................   21
SECTION 3.04.  Provision as to Paying Agent ....................................................................   21
SECTION 3.05.  Certificate to Trustee ..........................................................................   22
SECTION 3.06.  Additional Interest .............................................................................   22
SECTION 3.07.  Compliance with Consolidation Provisions ........................................................   22
SECTION 3.08.  Limitation on Dividends .........................................................................   22
SECTION 3.09.  Covenants as to the Trust .......................................................................   23

                                                            ARTICLE IV

                                         LISTS AND REPORTS BY THE COMPANY AND THE TRUSTEE

SECTION 4.01.  Securityholders' Lists ..........................................................................   24
SECTION 4.02.  Preservation and Disclosure of Lists ............................................................   24

                                                             ARTICLE V

                               REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS UPON AN EVENT OF DEFAULT

SECTION 5.01.  Events of Default ...............................................................................   25
SECTION 5.02.  Payment of Debt Securities on Default; Suit Therefor ............................................   27
SECTION 5.03.  Application of Moneys Collected by Trustee ......................................................   28
SECTION 5.04.  Proceedings by Securityholders ..................................................................   29
</TABLE>

                                      iii
<PAGE>

<TABLE>
<S>                                                                                                               <C>
SECTION 5.05.  Proceedings by Trustee ..........................................................................   30
SECTION 5.06.  Remedies Cumulative and Continuing ..............................................................   30
SECTION 5.07.  Direction of Proceedings and Waiver of Defaults by Majority of Securityholders ..................   30
SECTION 5.08.  Notice of Defaults ..............................................................................   31
SECTION 5.09.  Undertaking to Pay Costs ........................................................................   31

                                                            ARTICLE VI

                                                      CONCERNING THE TRUSTEE

SECTION 6.01.  Duties and Responsibilities of Trustee ..........................................................   32
SECTION 6.02.  Reliance on Documents, Opinions, etc ............................................................   33
SECTION 6.03.  No Responsibility for Recitals, etc .............................................................   34
SECTION 6.04.  Trustee, Authenticating Agent, Paying Agents, Transfer Agents or Registrar May Own
               Debt Securities..................................................................................   34
SECTION 6.05.  Moneys to be Held in Trust ......................................................................   34
SECTION 6.06.  Compensation and Expenses of Trustee ............................................................   34
SECTION 6.07.  Officers' Certificate as Evidence ...............................................................   35
SECTION 6.08.  Eligibility of Trustee ..........................................................................   36
SECTION 6.09.  Resignation or Removal of Trustee ...............................................................   36
SECTION 6.10.  Acceptance by Successor Trustee .................................................................   37
SECTION 6.11.  Succession by Merger, etc .......................................................................   38
SECTION 6.12.  Authenticating Agents ...........................................................................   39

                                                            ARTICLE VII

                                                  CONCERNING THE SECURITYHOLDERS

SECTION 7.01.  Action by Securityholders .......................................................................   40
SECTION 7.02.  Proof of Execution by Securityholders ...........................................................   40
SECTION 7.03.  Who are Deemed Absolute Owners ..................................................................   41
SECTION 7.04.  Debt Securities Owned by Company Deemed Not Outstanding .........................................   41
SECTION 7.05.  Revocation of Consents, Future Holders Bound ....................................................   41

                                                           ARTICLE VIII

                                                     SECURITYHOLDERS' MEETINGS
SECTION 8.01.  Purposes of Meetings ............................................................................   42
SECTION 8.02.  Call of Meetings by Trustee .....................................................................   42
SECTION 8.03.  Call of Meetings by Company or Securityholders ..................................................   43
SECTION 8.04.  Qualifications for Voting .......................................................................   43
SECTION 8.05.  Regulations .....................................................................................   43
SECTION 8.06.  Voting ..........................................................................................   44
SECTION 8.07.  Quorum; Actions .................................................................................   44
</TABLE>

                                      iv
<PAGE>

<TABLE>
                                                            ARTICLE IX

                                                      SUPPLEMENTAL INDENTURES

<S>                                                                                                              <C>
SECTION 9.01.  Supplemental Indentures without Consent of Securityholders ......................................   45
SECTION 9.02.  Supplemental Indentures with Consent of Securityholders .........................................   46
SECTION 9.03.  Effect of Supplemental Indentures ...............................................................   47
SECTION 9.04.  Notation on Debt Securities .....................................................................   47
SECTION 9.05.  Evidence of Compliance of Supplemental Indenture to be Furnished to Trustee .....................   48

                                                             ARTICLE X

                                                     REDEMPTION OF SECURITIES

SECTION 10.01.  Optional Redemption ............................................................................   48
SECTION 10.02.  Special Event Redemption .......................................................................   48
SECTION 10.03.  Notice of Redemption, Selection of Debt Securities .............................................   48
SECTION 10.04.  Payment of Debt Securities Called for Redemption ...............................................   49

                                                            ARTICLE XI

                                         CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE

SECTION 11.01.  Company May Consolidate, etc., on Certain Terms ................................................   50
SECTION 11.02.  Successor Entity to be Substituted .............................................................   50
SECTION 11.03.  Opinion of Counsel to be Given to Trustee ......................................................   51

                                                            ARTICLE XII

                                              SATISFACTION AND DISCHARGE OF INDENTURE

SECTION 12.01.  Discharge of Indenture .........................................................................   51
SECTION 12.02.  Deposited Moneys to be Held in Trust by Trustee ................................................   52
SECTION 12.03.  Paying Agent to Repay Moneys Held ..............................................................   52
SECTION 12.04.  Return of Unclaimed Moneys .....................................................................   52

                                                           ARTICLE XIII

                                  IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS

SECTION 13.01.  Indenture and Debt Securities Solely Corporate Obligations .....................................   52

                                                            ARTICLE XIV

                                                     MISCELLANEOUS PROVISIONS

SECTION 14.01.  Successors .....................................................................................   53
SECTION 14.02.  Official Acts by Successor Entity ..............................................................   53
SECTION 14.03.  Surrender of Company Powers ....................................................................   53
SECTION 14.04.  Addresses for Notices, etc .....................................................................   53
</TABLE>

                                       v
<PAGE>

<TABLE>
<S>                                                                                                            <C>
SECTION 14.05.  Governing Law ..................................................................................   53
SECTION 14.06.  Evidence of Compliance with Conditions Precedent ...............................................   53
SECTION 14.07.  Non-Business Days ..............................................................................   54
SECTION 14.08.  Table of Contents, Headings, etc ...............................................................   54
SECTION 14.09.  Execution in Counterparts ......................................................................   54
SECTION 14.10.  Separability ...................................................................................   54
SECTION 14.11.  Assignment .....................................................................................   54
SECTION 14.12.  Acknowledgment of Rights .......................................................................   55

                                                            ARTICLE XV

                                                 SUBORDINATION OF DEBT SECURITIES

SECTION 15.01.  Agreement to Subordinate .......................................................................   55
SECTION 15.02.  Default on Senior Indebtedness .................................................................   56
SECTION 15.03.  Liquidation; Dissolution; Bankruptcy ...........................................................   56
SECTION 15.04.  Subrogation ....................................................................................   57
SECTION 15.05.  Trustee to Effectuate Subordination ............................................................   58
SECTION 15.06.  Notice by the Company ..........................................................................   58
SECTION 15.07.  Rights of the Trustee; Holders of Senior Indebtedness ..........................................   59
SECTION 15.08.  Subordination May Not Be Impaired ..............................................................   60
</TABLE>

EXHIBITS

EXHIBIT A       FORM OF DEBT SECURITY


                                      vi
<PAGE>

          THIS INDENTURE, dated as of July 16, 2001, between Greater Bay
Bancorp, a bank holding company incorporated in California (hereinafter
sometimes called the "Company"), and The Bank of New York, as trustee
(hereinafter sometimes called the "Trustee"),

                             W I T N E S S E T H :

          WHEREAS, for its lawful corporate purposes, the Company has duly
authorized the issuance of its Floating Rate Junior Subordinated Deferrable
Interest Debentures due 2031 (the "Debt Securities") under this Indenture and to
provide, among other things, for the execution and authentication, delivery and
administration thereof, the Company has duly authorized the execution of this
Indenture; and

          WHEREAS, all acts and things necessary to make this Indenture a valid
agreement according to its terms, have been done and performed;

          NOW, THEREFORE, This Indenture Witnesseth:

          In consideration of the premises, and the purchase of the Debt
Securities by the holders thereof, the Company covenants and agrees with the
Trustee for the equal and proportionate benefit of the respective holders from
time to time of the Debt Securities as follows:

                                   ARTICLE I

                                  DEFINITIONS

          SECTION 1.01.  Definitions.
                         -----------

          The terms defined in this Section 1.01 (except as herein otherwise
expressly provided or unless the context otherwise requires) for all purposes of
this Indenture and of any indenture supplemental hereto shall have the
respective meanings specified in this Section 1.01. All accounting terms used
herein and not expressly defined shall have the meanings assigned to such terms
in accordance with generally accepted accounting principles and the term
"generally accepted accounting principles" means such accounting principles as
are generally accepted at the time of any computation.  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.

          "Additional Interest" shall have the meaning set forth in Section
3.06.

          "Allocable Amounts," when used with respect to any Senior
Indebtedness, means all amounts due or to become due on such Senior Indebtedness
less, if applicable, any amount which would have been paid to, and retained by,
the holders of such Senior Indebtedness (whether as a result of the receipt of
payments by the holders of such Senior Indebtedness from the Company or any
other obligor thereon or from any holders of, or trustee in respect of, other
indebtedness that is subordinate and junior in right of payment to such Senior
Indebtedness pursuant to any provision of such indebtedness for the payment over
of amounts received on account of such indebtedness to the holders of such
Senior Indebtedness or otherwise) but for the
<PAGE>

fact that such Senior Indebtedness is subordinate or junior in right of payment
to (or subject to a requirement that amounts received on such Senior
Indebtedness be paid over to obligees on) trade accounts payable or accrued
liabilities arising in the ordinary course of business

          "Authenticating Agent" means any agent or agents of the Trustee which
at the time shall be appointed and acting pursuant to Section 6.12.

          "Bankruptcy Law" means Title 11, U.S. Code, or any similar federal or
state law for the relief of debtors.

          "Board of Directors" means the board of directors or the executive
committee or any other duly authorized designated officers of the Company.

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

          "Business Day" means any day other than a Saturday, Sunday or any
other day on which banking institutions in New York City or Palo Alto,
California are permitted or required by any applicable law to close.

          "Calculation Agent"  means the Person identified as "Trustee" in the
first paragraph hereof, in its individual capacity and not as Trustee, and,
subject to the provisions of Article VI hereof, shall also include its
successors and assigns, in their individual capacities and not as Trustee.

          "Capital Securities" means undivided beneficial interests in the
assets of the Trust which rank pari passu with Common Securities issued by the
Trust; provided, however, that if an Event of Default (as defined in the
       --------  -------
Declaration) has occurred and is continuing, the rights of holders of such
Common Securities to payment in respect of distributions and payments upon
liquidation, redemption and otherwise are subordinated to the rights of holders
of such Capital Securities.

          "Capital Securities Guarantee" means the guarantee that the Company
will enter into with The Bank of New York or other Persons that operates
directly or indirectly for the benefit of holders of Capital Securities of the
Trust.

          "Capital Treatment Event" means the receipt by the Company and the
Trust of an opinion of counsel experienced in such matters to the effect that,
as a result of the occurrence of any amendment to, or change in, the laws, rules
or regulations of the United States or any political subdivision thereof or
therein, or as the result of any official or administrative pronouncement or
action or decision interpreting or applying such laws, rules or regulations,
which amendment or change is effective or which pronouncement, action or
decision is announced on or after the date of original issuance of the Debt
Securities, there is more than an insubstantial risk that the Company will not,
within 90 days of the date of such opinion, be entitled to treat an amount equal
to the aggregate Liquidation Amount of the Capital Securities as "Tier I
Capital" (or the then equivalent thereof) for purposes of the capital adequacy
guidelines of the Federal Reserve, as then in effect and applicable to the
Company, provided, however, that
         --------  -------

                                       2
<PAGE>

the distribution of Debt Securities in connection with the liquidation of the
Trust by the Company shall not in and of itself constitute a Capital Treatment
Event unless such liquidation shall have occurred in connection with a Tax Event
or an Investment Company Event.

          "Certificate" means a certificate signed by any one of the principal
executive officer, the principal financial officer or the principal accounting
officer of the Company.

          "Common Securities" means undivided beneficial interests in the assets
of the Trust which rank pari passu with Capital Securities issued by the Trust;
provided, however, that if an Event of Default (as defined in the Declaration)
--------  -------
has occurred and is continuing, the rights of holders of such Common Securities
to payment in respect of distributions and payments upon liquidation, redemption
and otherwise are subordinated to the rights of holders of such Capital
Securities.

          "Company" means Greater Bay Bancorp, a bank holding company
incorporated in California, and, subject to the provisions of Article XI, shall
include its successors and assigns.

          "Comparable Treasury Issue" means with respect to any Special
Redemption Date, the United States Treasury security selected by the Quotation
Agent as having a maturity comparable to the Remaining Life that would be
utilized, at the time of selection and in accordance with customary financial
practice, in pricing new issues of corporate debt securities of comparable
maturity to the Remaining Life.  If no United States Treasury security has a
maturity which is within a period from three months before to three months after
July 25, 2006, the two most closely corresponding United States Treasury
securities shall be used as the Comparable Treasury Issue, and the Treasury Rate
shall be interpolated or extrapolated on a straight-line basis, rounding to the
nearest month using such securities.

          "Comparable Treasury Price" means (a) the average of five Reference
Treasury Dealer Quotations for such Special Redemption Date, after excluding the
highest and lowest such Reference Treasury Dealer Quotations, or (b) if the
Trustee obtains fewer than five such Reference Treasury Dealer Quotations, the
average of all such Quotations.

          "Debt Security" or "Debt Securities" has the meaning stated in the
first recital of this Indenture.

          "Debt Security Register" has the meaning specified in Section 2.05.

          "Declaration" means the Amended and Restated Declaration of Trust of
the Trust, as amended or supplemented from time to time.

          "Default" means any event, act or condition that with notice or lapse
of time, or both, would constitute an Event of Default.

          "Defaulted Interest" has the meaning set forth in Section 2.08.

          "Deferred Interest"  has the meaning set forth in Section 2.11.

                                       3
<PAGE>

          "Event of Default" means any event specified in Section 5.01, which
has continued for the period of time, if any, and after the giving of the
notice, if any, therein designated.

          "Extension Period" has the meaning set forth in Section 2.11.

          "Federal Reserve" means the Board of Governors of the Federal Reserve
System.

          "Indebtedness Ranking on Parity with the Debt Securities" shall mean
indebtedness, whether outstanding on the date of execution of this indenture or
hereafter created, assumed or incurred, to the extent such indebtedness by its
terms ranks pari passu with and not prior or senior to the Debt Securities in
the right of payment upon the happening of the dissolution, winding up,
liquidation or reorganization of the Company including, without limitation the
Company's 9.75% Junior Subordinated Deferrable Interest Debentures, maturing on
March 31, 2027 ("1997 Junior Subordinated Debentures"), the Company's Floating
Rate Junior Subordinated Deferrable Interest Debentures, maturing on September
15, 2028 (the "1998 Junior Subordinated Debentures"), the Company's 10.875%
Junior Subordinated Debentures, maturing on March 8, 2030 (the "March 2000
Junior Subordinated Debentures") and the Company's 10.75% Junior Subordinated
Debentures, maturing on June 1, 2030 (the "June 2000 Junior Subordinated
Debentures"). The securing of any indebtedness otherwise constituting
indebtedness Ranking on Parity with the Debt Securities shall not be deemed to
prevent such indebtedness from constituting Indebtedness Ranking on a Parity
with the Debt Securities with respect to any assets of the Company not securing
such indebtedness.

          "Indebtedness Ranking Junior to the Debt Securities" " shall mean any
indebtedness, whether outstanding on the date of execution of this Indenture or
hereafter created, assumed or incurred, to the extent such indebtedness by its
terms ranks junior to and not pari passu with or prior to the Debt Securities in
right of payment upon the happening of the dissolution or winding-up or
liquidation or reorganization of the Company.  The securing of any indebtedness
otherwise constituting Indebtedness Ranking Junior to the Debt Securities shall
not be deemed to prevent such Indebtedness from constituting Indebtedness
Ranking Junior to the Debt Securities with respect to any assets of the Company
not securing such indebtedness

          "Indenture" means this instrument as originally executed or, if
amended or supplemented as herein provided, as so amended or supplemented, or
both.

          "Institutional Trustee"  has the meaning set forth in the Declaration.

          "Interest Payment Date" means January 25 and July 25 of each year,
commencing on January 25, 2002, during the term of this Indenture.

          "Interest Rate" means a per annum rate of interest, reset semi-
annually, equal to LIBOR, as determined on the immediately preceding LIBOR
Determination Date, plus 3.75%; provided, that the applicable Interest Rate may
                                --------
not exceed 12.50% through the Interest Payment Date in July 2011.

          "Investment Company Event" means the receipt by the Company and the
Trust of an opinion of counsel experienced in such matters to the effect that,
as a result of the occurrence

                                       4
<PAGE>

of a change in law or regulation or written change in interpretation or
application of law or regulation by any legislative body, court, governmental
agency or regulatory authority, there is more than an insubstantial risk that
the Trust is or, within 90 days of the date of such opinion will be, considered
an "investment company" that is required to be registered under the Investment
Company Act of 1940, as amended, which change or prospective change becomes
effective or would become effective, as the case may be, on or after the date of
the original issuance of the Debt Securities.

          "LIBOR"  means the London Interbank Offered Rate for six-month U.S.
Dollar deposits in Europe as determined by the Calculation Agent according to
Section 2.10(b).

          "LIBOR Banking Day" has the meaning set forth in Section 2.10(b)(1).

          "LIBOR Business Day" has the meaning set forth in Section 2.10(b)(1).

          "LIBOR Determination Date" has the meaning set forth in Section
2.10(b).

          "Liquidation Amount" means the stated amount of $1,000 per Trust
Security.

          "Maturity Date"  means July 25, 2031.

          "Officers' Certificate" means a certificate signed by the Chairman of
the Board, the Vice Chairman, the President, or any Vice President, and by the
Chief Financial Officer, the Treasurer, an Assistant Treasurer, the Comptroller,
an Assistant Comptroller, the Secretary or an Assistant Secretary of the
Company, and delivered to the Trustee.  Each such certificate shall include the
statements provided for in Section 14.06 if and to the extent required by the
provisions of such Section.

          "Opinion of Counsel" means an opinion in writing signed by legal
counsel, who may be an employee of or counsel to the Company, or may be other
counsel satisfactory to the Trustee.  Each such opinion shall include the
statements provided for in Section 14.06 if and to the extent required by the
provisions of such Section.

          The term "outstanding,"  when used with reference to Debt Securities,
subject to the provisions of Section 7.04, means, as of any particular time, all
Debt Securities authenticated and delivered by the Trustee or the Authenticating
Agent under this Indenture, except

          (a) Debt Securities theretofore canceled by the Trustee or the
     Authenticating Agent or delivered to the Trustee for cancellation;

          (b) Debt Securities, or portions thereof, for the payment or
     redemption of which moneys in the necessary amount shall have been
     deposited in trust with the Trustee or with any paying agent (other than
     the Company) or shall have been set aside and segregated in trust by the
     Company (if the Company shall act as its own paying agent); provided that,
     if such Debt Securities, or portions thereof, are to be redeemed prior to
     maturity thereof, notice of such redemption shall have been given as
     provided in Articles Ten and Fourteen or provision satisfactory to the
     Trustee shall have been made for giving such notice; and

                                       5
<PAGE>

          (c) Debt Securities paid pursuant to Section 2.06 or in lieu of or in
     substitution for which other Debt Securities shall have been authenticated
     and delivered pursuant to the terms of Section 2.06 unless proof
     satisfactory to the Company and the Trustee is presented that any such Debt
     Securities are held by bona fide holders in due course.

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

          "Predecessor Security" of any particular Debt Security means every
previous Debt Security evidencing all or a portion of the same debt as that
evidenced by such particular Debt Security; and, for the purposes of this
definition, any Debt Security authenticated and delivered under Section 2.06 in
lieu of a lost, destroyed or stolen Debt Security shall be deemed to evidence
the same debt as the lost, destroyed or stolen Debt Security.

          "Primary Treasury Dealer" means a primary United States Government
securities dealer in New York City.

          "Principal Office of the Trustee," or other similar term, means the
office of the Trustee, at which at any particular time its corporate trust
business shall be principally administered, which at all times shall be located
within the United States and at the time of the execution of this Indenture
shall be 101 Barclay Street, Floor 21 West, New York, NY 10286.

          "Quotation Agent" means Salomon Smith Barney Inc. and its successors;
provided, however, that if the foregoing shall cease to be a Primary Treasury
--------  -------
Dealer, the Company shall substitute therefor another Primary Treasury Dealer.

          "Redemption Date" has the meaning set forth in Section 10.01.

          "Redemption Price"  means the price set forth in the following table
for any Redemption Date or Special Redemption Date that occurs within the
twelve-month period beginning in the relevant date indicated below, expressed in
percentage of the principal amount of the Debt Securities being redeemed:

<TABLE>
<CAPTION>
              Year Beginning                   Percentage
              --------------                   ----------
         <S>                                    <C>
              July 25, 2006                     107.6875
              July 25, 2007                     106.1500
              July 25, 2008                     104.6125
              July 25, 2009                     103.0750
              July 25, 2010                     101.5375
         July 25, 2011 and after                100.0000
</TABLE>

                                       6
<PAGE>

plus accrued and unpaid interest on such Debentures to the Redemption Date or,
in the case of a redemption due to the occurrence of a Special Event, to the
Special Redemption Date.

          "Reference Treasury Dealer" means (i) the Quotation Agent and (ii) any
other Primary Treasury Dealer selected by the Trustee after consultation with
the Company.

          "Reference Treasury Dealer Quotations" means, with respect to each
Reference Treasury Dealer and any Special Redemption Date, the average, as
determined by the Quotation Agent, of the bid and asked prices for the
Comparable Treasury Issue (expressed in each case as a percentage of its
principal amount) quoted in writing to the Trustee by such Reference Treasury
Dealer at 5:00 p.m., New York City time, on the third Business Day preceding
such Special Redemption Date.

          "Remaining Life" means, with respect to any Debt Security, the period
from the Special Redemption Date for such Debt Security to July 25, 2006.

          "Responsible Officer" means, with respect to the Trustee, any officer
within the Principal Office of the Trustee, including any vice-president, any
assistant vice-president, any secretary, any assistant secretary, the treasurer,
any assistant treasurer, any trust officer or other officer of the Principal
Trust Office 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 that officer's knowledge of and familiarity with the
particular subject.

          "Securityholder," "holder of Debt Securities" or other similar terms,
means any Person in whose name at the time a particular Debt Security is
registered on the Debt Security Register.

          "Senior Indebtedness" means, with respect to the Company, (i) the
principal, premium, if any, and interest in respect of (A) indebtedness of the
Company for money borrowed and (B) indebtedness evidenced by securities,
debentures, notes, bonds or other similar instruments issued by the Company;
(ii) all capital lease obligations of the Company; (iii) all obligations of the
Company issued or assumed as the deferred purchase price of property, all
conditional sale obligations of the Company and all obligations of the Company
under any title retention agreement (but excluding trade accounts payable
arising in the ordinary course of business); (iv) all obligations of the Company
for the reimbursement of any letter of credit, any banker's acceptance, any
security purchase facility, any repurchase agreement or similar arrangement, any
interest rate swap, any other hedging arrangement, any obligation under options
or any similar credit or other transaction; (v) all obligations of the type
referred to in clauses (i) through (iv) above of other Persons for the payment
of which the Company is responsible or liable as obligor, guarantor or
otherwise; and (vi) all obligations of the type referred to in clauses (i)
through (v) above of other Persons secured by any lien on any property or asset
of the Company (whether or not such obligation is assumed by the Company),
whether incurred on or prior to the date of this Indenture or thereafter
incurred, except for Indebtedness Ranking Junior to the Debt Securities and
Indebtedness Ranking on Parity to the Debt Securities, Senior Indebtedness shall
continue to be Senior Indebtedness and be entitled to the subordination
provisions irrespective of any amendment, modification or waiver of any term of
such Senior

                                       7
<PAGE>

Indebtedness, unless, with the prior approval of the Federal Reserve if not
otherwise generally approved, in the instrument creating or evidencing the same
or pursuant to which the same is outstanding, it is provided that such
obligations are not superior or are pari passu in right of payment to the Debt
Securities.

          "Special Event" means any of a Tax Event, an Investment Company Event
or a Capital Treatment Event.

          "Special Redemption Date" has the meaning set forth in 10.02.

          "Special Redemption Price" means (1) if the Special Redemption Date is
before July 25, 2006, the greater of (a) 100% of the principal amount of the
Debt Securities being redeemed pursuant to Section 10.02 or (b) as determined by
a Quotation Agent, the sum of the present values of the principal amount and the
premium payable as part of the Redemption Price with respect to a redemption as
of July 25, 2006, together with the present value of interest payments
calculated at a fixed per annum rate of interest equal to 10.25% over the
Remaining Life of such Debt Securities, discounted to the Special Redemption
Date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day
months) at the Treasury Rate plus 0.50%, plus, in the case of either (a) or (b),
accrued and unpaid interest on such Debt Securities to the Special Redemption
Date and (2) if the Special Redemption Date is on or after July 25, 2006, the
Redemption Price for such Special Redemption Date.

          "Subsidiary" means, with respect to any Person, (i) any corporation at
least a majority of the outstanding voting stock of which is owned, directly or
indirectly, by such Person or by one or more of its Subsidiaries, or by such
Person and one or more of its Subsidiaries, (ii) any general partnership, joint
venture or similar entity, at least a majority of the outstanding partnership or
similar interests of which shall at the time be owned by such Person, or by one
or more of its Subsidiaries, or by such Person and one or more of its
Subsidiaries, and (iii) any limited partnership of which such Person or any of
its Subsidiaries is a general partner.  For the purposes of this definition,
"voting stock" means shares, interests, participations or other equivalents in
the equity interest (however designated) in such Person having ordinary voting
power for the election of a majority of the directors (or the equivalent) of
such Person, other than shares, interests, participations or other equivalents
having such power only by reason of the occurrence of a contingency.

          "Tax Event" means the receipt by the Company and the Trust of an
opinion of counsel experienced in such matters to the effect that, as a result
of any amendment to or change (including any announced prospective change) in
the laws or any regulations thereunder of the United States or any political
subdivision or taxing authority thereof or therein, or as a result of any
official administrative pronouncement (including any private letter ruling,
technical advice memorandum, regulatory procedure, notice or announcement (an
"Administrative Action")) or judicial decision interpreting or applying such
laws or regulations, regardless of whether such Administrative Action or
judicial decision is issued to or in connection with a proceeding involving the
Company or the Trust and whether or not subject to review or appeal, which
amendment, clarification, change, Administrative Action or decision is enacted,
promulgated or announced, in each case on or after the date of original issuance
of the Debt Securities, there is more than an insubstantial risk that: (i) the
Trust is, or will be within 90 days of the date of such

                                       8
<PAGE>

opinion, subject to United States federal income tax with respect to income
received or accrued on the Debt Securities; (ii) interest payable by the Company
on the Debt Securities is not, or within 90 days of the date of such opinion,
will not be, deductible by the Company, in whole or in part, for United States
federal income tax purposes; or (iii) the Trust is, or will be within 90 days of
the date of such opinion, subject to more than a de minimis amount of other
taxes, duties, assessments or other governmental charges.

          "Treasury Rate" means (i) the yield, under the heading which
represents the average for the week immediately prior to the date of
calculation, appearing in the most recently published statistical release
designated H.15 (519) or any successor publication which is published weekly by
the Federal Reserve and which establishes yields on actively traded United
States Treasury securities adjusted to constant maturity under the caption
"Treasury Constant Maturities," for the maturity corresponding to the Remaining
Life (if no maturity is within three months before or after the Remaining Life,
yields for the two published maturities most closely corresponding to the
Remaining Life shall be determined and the Treasury Rate shall be interpolated
or extrapolated from such yields on a straight-line basis, rounding to the
nearest month) or (ii) if such release (or any successor release) is not
published during the week preceding the calculation date or does not contain
such yields, the rate per annum equal to the semi-annual equivalent yield to
maturity of the Comparable Treasury Issue, calculated using a price for the
Comparable Treasury Issue (expressed as a percentage of its principal amount)
equal to the Comparable Treasury Price for such Special Redemption Date.  The
Treasury Rate shall be calculated on the third Business Day preceding the
Special Redemption Date.

          "Trust" means GBB Capital VI, the Delaware business trust, or any
other similar trust created for the purpose of issuing Capital Securities in
connection with the issuance of Debt Securities under this Indenture, of which
the Company is the sponsor.

          "Trust Indenture Act" means the Trust Indenture Act of 1939, as
amended.

          "Trust Securities" means Common Securities and Capital Securities of
GBB Capital VI.

          "Trustee" means the Person identified as "Trustee" in the first
paragraph hereof, and, subject to the provisions of Article VI hereof, shall
also include its successors and assigns as Trustee hereunder.

          "United States"  means the United States of America and the District
of Columbia.

          "U.S. Person"  has the meaning given to United States Person as set
forth in Section 7701(a)(30) of the Internal Revenue Code of 1986, as amended.

                                       9
<PAGE>

                                   ARTICLE II

                                DEBT SECURITIES

     SECTION 2.01.  Authentication and Dating.
                    -------------------------

          Upon the execution and delivery of this Indenture, or from time to
time thereafter, Debt Securities in an aggregate principal amount not in excess
of $15,464,000 may be executed and delivered by the Company to the Trustee for
authentication, and the Trustee shall thereupon authenticate and make available
for delivery said Debt Securities to or upon the written order of the Company,
signed by its Chairman of the Board of Directors, Vice Chairman, President or
Chief Financial Officer, or one of its Vice Presidents and by its Secretary, any
Assistant Secretary, Treasurer or any Assistant Treasurer, without any further
action by the Company hereunder.  In authenticating such Debt Securities, and
accepting the additional responsibilities under this Indenture in relation to
such Debt Securities, the Trustee shall be entitled to receive, and (subject to
Section 6.01) shall be fully protected in relying upon:

               (a) a copy of any Board Resolution or Board Resolutions relating
     thereto and, if applicable, an appropriate record of any action taken
     pursuant to such resolution, in each case certified by the Secretary or an
     Assistant Secretary of the Company as the case may be; and

               (b) an Opinion of Counsel prepared in accordance with Section
     14.06 which shall also state:

          (1) that such Debt Securities, when authenticated and delivered by the
     Trustee and issued by the Company in each case in the manner and subject to
     any conditions specified in such Opinion of Counsel, will constitute valid
     and legally binding obligations of the Company; and

          (2) that all laws and requirements in respect of the execution and
     delivery by the Company of the Debt Securities, have been complied with and
     that authentication and delivery of the Debt Securities by the Trustee will
     not violate the terms of this Indenture.

       The Trustee shall have the right to decline to authenticate and deliver
any Debt Securities under this Section if the Trustee, being advised by counsel,
determines that such action may not lawfully be taken or if a Responsible
Officer of the Trustee in good faith shall determine that such action would
expose the Trustee to personal liability to existing holders.

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

     SECTION 2.02.  Form of Trustee's Certificate of Authentication.

          The Trustee's certificate of authentication on all Debt Securities
shall be in substantially the following form:

                                      10
<PAGE>

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

          __________________________________, AS TRUSTEE

          By_________________________
             Authorized Officer

     SECTION 2.03.  Form and Denomination of Debt Securities.
                    ----------------------------------------

          The Debt Securities shall be substantially in the form of Exhibit A
hereto.  The Debt Securities shall be in registered, certificated form without
coupons and in minimum denominations of $100,000 and any multiple of $1,000 in
excess thereof.  The Debt Securities shall be numbered, lettered, or otherwise
distinguished in such manner or in accordance with such plans as the officers
executing the same may determine with the approval of the Trustee as evidenced
by the execution and authentication thereof.

     SECTION 2.04.  Execution of Debt Securities.
                    ----------------------------

          The Debt Securities shall be signed in the name and on behalf of the
Company by the manual or facsimile signature of its Chairman of the Board of
Directors, Vice Chairman, President or Chief Financial Officer or one of its
Executive Vice Presidents, Senior Vice Presidents or Vice Presidents, under its
corporate seal which may be affixed thereto or printed, engraved or otherwise
reproduced thereon, by facsimile or otherwise, and which need not be attested.
Only such Debt Securities as shall bear thereon a certificate of authentication
substantially in the form herein before recited, executed by the Trustee or the
Authenticating Agent by the manual signature of an authorized officer, shall be
entitled to the benefits of this Indenture or be valid or obligatory for any
purpose.  Such certificate by the Trustee or the Authenticating Agent upon any
Debt Security executed by the Company shall be conclusive evidence that the Debt
Security so authenticated has been duly authenticated and delivered hereunder
and that the holder is entitled to the benefits of this Indenture.

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

          Every Debt Security shall be dated the date of its authentication.

     SECTION 2.05.  Exchange and Registration of Transfer of Debt Securities.
                    --------------------------------------------------------

          The Company shall cause to be kept, at the office or agency maintained
for the purpose of registration of transfer and for exchange as provided in
Section 3.02, a register (the "Debt Security Register") for the Debt Securities
issued hereunder in which, subject to such

                                      11
<PAGE>

reasonable regulations as it may prescribe, the Company shall provide for the
registration and transfer of all Debt Securities as in this Article Two
provided. Such register shall be in written form or in any other form capable of
being converted into written form within a reasonable time.

          Debt Securities to be exchanged may be surrendered at the Principal
Office of the Trustee or at any office or agency to be maintained by the Company
for such purpose as provided in Section 3.02, and the Company shall execute, the
Company or the Trustee shall register and the Trustee or the Authenticating
Agent shall authenticate and make available for delivery in exchange therefor
the Debt Security or Debt Securities which the Securityholder making the
exchange shall be entitled to receive.  Upon due presentment for registration of
transfer of any Debt Security at the principal corporate trust office of the
Trustee or at any office or agency of the Company maintained for such purpose as
provided in Section 3.02, the Company shall execute, the Company or the Trustee
shall register and the Trustee or the Authenticating Agent shall authenticate
and make available for delivery in the name of the transferee or transferees a
new Debt Security for a like aggregate principal amount. Registration or
registration of transfer of any Debt Security by the Trustee or by any agent of
the Company appointed pursuant to Section 3.02, and delivery of such Debt
Security, shall be deemed to complete the registration or registration of
transfer of such Debt Security.

          All Debt Securities presented for registration of transfer or for
exchange or payment shall (if so required by the Company or the Trustee or the
Authenticating Agent) be duly endorsed by, or be accompanied by a written
instrument or instruments of transfer in form satisfactory to the Company and
either the Trustee or the Authenticating Agent duly executed by, the holder or
his attorney duly authorized in writing.

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

          The Company or the Trustee shall not be required to exchange or
register a transfer of any Debt Security for a period of 15 days next preceding
the date of selection of Debt Securities for redemption.

          Notwithstanding the foregoing, Debt Securities may not be transferred
except in compliance with the restricted securities legend set forth below (the
"Restrictive Securities Legend"), unless otherwise determined by the Company in
accordance with applicable law:

          THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS OR ANY
OTHER APPLICABLE SECURITIES LAWS.  NEITHER THIS SECURITY NOR ANY INTEREST OR
PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED,
ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR
UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT.  THE HOLDER OF THIS SECURITY BY ITS
ACCEPTANCE HEREOF AGREES TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY ONLY
(A) TO THE COMPANY, (B) PURSUANT TO RULE 144A UNDER THE

                                      12
<PAGE>

SECURITIES ACT ("RULE 144A"), TO A PERSON IT REASONABLY BELIEVES IS A "QUALIFIED
INSTITUTIONAL BUYER" AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT
OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN
THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (C) TO AN "ACCREDITED
INVESTOR" WITHIN THE MEANING OF SUBPARAGRAPH (a) (1), (2), (3) OR (7) OF RULE
501 UNDER THE SECURITIES ACT THAT IS ACQUIRING THE SECURITY FOR ITS OWN ACCOUNT,
OR FOR THE ACCOUNT OF AN "ACCREDITED INVESTOR," FOR INVESTMENT PURPOSES AND NOT
WITH A VIEW TO, OR FOR OFFER OR SALE IN CONNECTION WITH, ANY DISTRIBUTION IN
VIOLATION OF THE SECURITIES ACT, OR (D) PURSUANT TO ANOTHER AVAILABLE EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE
COMPANY'S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSES
(C) OR (D) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION
AND/OR OTHER INFORMATION SATISFACTORY TO IT IN ACCORDANCE WITH THE INDENTURE, A
COPY OF WHICH MAY BE OBTAINED FROM THE COMPANY. THE HOLDER OF THIS SECURITY
AGREES THAT IT WILL COMPLY WITH THE FOREGOING RESTRICTIONS.

          THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF ALSO AGREES,
REPRESENTS AND WARRANTS THAT IT IS NOT AN EMPLOYEE BENEFIT, INDIVIDUAL
RETIREMENT ACCOUNT OR OTHER PLAN OR ARRANGEMENT SUBJECT TO TITLE I OF THE
EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR
SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"),
(EACH A "PLAN"), OR AN ENTITY WHOSE UNDERLYING ASSETS INCLUDE "PLAN ASSETS" BY
REASON OF ANY PLAN'S INVESTMENT IN THE ENTITY AND NO PERSON INVESTING "PLAN
ASSETS" OF ANY PLAN MAY ACQUIRE OR HOLD THIS SECURITY OR ANY INTEREST THEREIN,
UNLESS SUCH PURCHASER OR HOLDER IS ELIGIBLE FOR THE EXEMPTIVE RELIEF AVAILABLE
UNDER U.S. DEPARTMENT OF LABOR PROHIBITED TRANSACTION CLASS EXEMPTION 96-23, 95-
60, 91-38, 90-1 OR 84-14 OR ANOTHER APPLICABLE EXEMPTION OR ITS PURCHASE AND
HOLDING OF THIS SECURITY IS NOT PROHIBITED BY SECTION 406 OF ERISA OR SECTION
4975 OF THE CODE WITH RESPECT TO SUCH PURCHASE OR HOLDING.  ANY PURCHASER OR
HOLDER OF THIS SECURITY OR ANY INTEREST THEREIN WILL BE DEEMED TO HAVE
REPRESENTED BY ITS PURCHASE AND HOLDING THEREOF THAT EITHER (i) IT IS NOT AN
EMPLOYEE BENEFIT PLAN WITHIN THE MEANING OF SECTION 3(3) OF ERISA, OR A PLAN TO
WHICH SECTION 4975 OF THE CODE IS APPLICABLE, A TRUSTEE OR OTHER PERSON ACTING
ON BEHALF OF AN EMPLOYEE BENEFIT PLAN OR PLAN, OR ANY OTHER PERSON OR ENTITY
USING THE ASSETS OF ANY EMPLOYEE BENEFIT PLAN OR PLAN TO FINANCE SUCH PURCHASE,
OR (ii) SUCH PURCHASE WILL NOT RESULT IN A PROHIBITED TRANSACTION UNDER SECTION
406 OF ERISA OR SECTION 4975 OF THE CODE FOR WHICH THERE IS NO APPLICABLE
STATUTORY OR ADMINISTRATIVE EXEMPTION.

          THIS SECURITY WILL BE ISSUED AND MAY BE TRANSFERRED ONLY IN BLOCKS
HAVING A LIQUIDATION AMOUNT OF NOT LESS THAN $100,000 AND

                                      13
<PAGE>

MULTIPLES OF $1,000 IN EXCESS THEREOF. ANY ATTEMPTED TRANSFER OF THIS SECURITY
IN A BLOCK HAVING A LIQUIDATION AMOUNT OF LESS THAN $100,000 SHALL BE DEEMED TO
BE VOID AND OF NO LEGAL EFFECT WHATSOEVER. ANY SUCH PURPORTED TRANSFEREE SHALL
BE DEEMED NOT TO BE THE HOLDER OF THIS SECURITY FOR ANY PURPOSE, INCLUDING, BUT
NOT LIMITED TO, THE RECEIPT OF DISTRIBUTIONS ON THIS SECURITY, AND SUCH
PURPORTED TRANSFEREE SHALL BE DEEMED TO HAVE NO INTEREST WHATSOEVER IN THIS
SECURITY.

     SECTION 2.06.  Mutilated, Destroyed, Lost or Stolen Debt Securities.
                    ----------------------------------------------------

          In case any Debt Security shall become mutilated or be destroyed, lost
or stolen, the Company shall execute, and upon its written request the Trustee
shall authenticate and deliver, a new Debt Security bearing a number not
contemporaneously outstanding, in exchange and substitution for the mutilated
Debt Security, or in lieu of and in substitution for the Debt Security so
destroyed, lost or stolen.  In every case the applicant for a substituted Debt
Security shall furnish to the Company and the Trustee such security or indemnity
as may be required by them to save each of them harmless, and, in every case of
destruction, loss or theft, the applicant shall also furnish to the Company and
the Trustee evidence to their satisfaction of the destruction, loss or theft of
such Debt Security and of the ownership thereof.

          The Trustee may authenticate any such substituted Debt Security and
deliver the same upon the written request or authorization of any officer of the
Company.  Upon the issuance of any substituted Debt Security, the Company may
require the payment of a sum sufficient to cover any tax or other governmental
charge that may be imposed in relation thereto and any other expenses connected
therewith.  In case any Debt Security which has matured or is about to mature or
has been called for redemption in full shall become mutilated or be destroyed,
lost or stolen, the Company may, instead of issuing a substitute Debt Security,
pay or authorize the payment of the same (without surrender thereof except in
the case of a mutilated Debt Security) if the applicant for such payment shall
furnish to the Company and the Trustee such security or indemnity as may be
required by them to save each of them harmless and, in case of destruction, loss
or theft, evidence satisfactory to the Company and to the Trustee of the
destruction, loss or theft of such Security and of the ownership thereof.

          Every substituted Debt Security issued pursuant to the provisions of
this Section 2.06 by virtue of the fact that any such Debt Security is
destroyed, lost or stolen shall constitute an additional contractual obligation
of the Company, whether or not the destroyed, lost or stolen Debt Security shall
be found at any time, and shall be entitled to all the benefits of this
Indenture equally and proportionately with any and all other Debt Securities
duly issued hereunder.  All Debt Securities shall be held and owned upon the
express condition that, to the extent permitted by applicable law, the foregoing
provisions are exclusive with respect to the replacement or payment of
mutilated, destroyed, lost or stolen Debt Securities and shall preclude any and
all other rights or remedies notwithstanding any law or statute existing or
hereafter enacted to the contrary with respect to the replacement or payment of
negotiable instruments or other securities without their surrender.

                                      14
<PAGE>

     SECTION 2.07.  Temporary Debt Securities.
                    -------------------------

          Pending the preparation of definitive Debt Securities, the Company may
execute and the Trustee shall authenticate and make available for delivery
temporary Debt Securities that are typed, printed or lithographed. Temporary
Debt Securities shall be issuable in any authorized denomination, and
substantially in the form of the definitive Debt Securities but with such
omissions, insertions and variations as may be appropriate for temporary Debt
Securities, all as may be determined by the Company.  Every such temporary Debt
Security shall be executed by the Company and be authenticated by the Trustee
upon the same conditions and in substantially the same manner, and with the same
effect, as the definitive Debt Securities.  Without unreasonable delay the
Company will execute and deliver to the Trustee or the Authenticating Agent
definitive Debt Securities and thereupon any or all temporary Debt Securities
may be surrendered in exchange therefor, at the principal corporate trust office
of the Trustee or at any office or agency maintained by the Company for such
purpose as provided in Section 3.02, and the Trustee or the Authenticating Agent
shall authenticate and make available for delivery in exchange for such
temporary Debt Securities a like aggregate principal amount of such definitive
Debt Securities.  Such exchange shall be made by the Company at its own expense
and without any charge therefor except that in case of any such exchange
involving a registration of transfer the Company may require payment of a sum
sufficient to cover any tax, fee or other governmental charge that may be
imposed in relation thereto.  Until so exchanged, the temporary Debt Securities
shall in all respects be entitled to the same benefits under this Indenture as
definitive Debt Securities authenticated and delivered hereunder.

     SECTION 2.08.  Payment of Interest.
                    -------------------

          Each Debt Security will bear interest at the then applicable Interest
Rate from and including each Interest Payment Date or, in the case of the first
interest period, the original date of issuance of such Debt Security to, but
excluding, the next succeeding Interest Payment Date or, in the case of the last
interest period, the Redemption Date, Special Redemption Date or Maturity Date,
as applicable, on the principal thereof, on any overdue principal and (to the
extent that payment of such interest is enforceable under applicable law) on
Deferred Interest on any overdue installment of interest (including Defaulted
Interest), payable (subject to the provisions of Article XII) on each Interest
Payment Date commencing on January 25, 2002.  Interest and any Deferred Interest
on any Debt Security that is payable, and is punctually paid or duly provided
for, on any Interest Payment Date shall be paid to the Person in whose name said
Debt Security (or one or more Predecessor Securities) is registered at the close
of business on the regular record date for such interest installment, except
that interest and any Deferred Interest payable on the Maturity Date shall be
paid to the Person to whom principal is paid.  In the event that any Debt
Security or portion thereof is called for redemption and the redemption date is
subsequent to a regular record date with respect to any Interest Payment Date
and prior to such Interest Payment Date, interest on such Debt Security will be
paid upon presentation and surrender of such Debt Security.

          Any interest on any Debt Security, other than Deferred Interest, that
is payable, but is not punctually paid or duly provided for, on any Interest
Payment Date (herein called "Defaulted Interest") shall forthwith cease to be
payable to the registered holder on the relevant regular record date by virtue
of having been such holder, and such Defaulted Interest shall be

                                      15
<PAGE>

paid by the Company to the Persons in whose names such Debt Securities (or their
respective Predecessor Securities) are registered at the close of business on a
special record date for the payment of such Defaulted Interest, which shall be
fixed in the following manner: the Company shall notify the Trustee in writing
of the amount of Defaulted Interest proposed to be paid on each such Debt
Security and the date of the proposed payment, and at the same time the Company
shall deposit with the Trustee an amount of money equal to the aggregate amount
proposed to be paid in respect of such Defaulted Interest or shall make
arrangements satisfactory to the Trustee for such deposit prior to the date of
the proposed payment, such money when deposited to be held in trust for the
benefit of the Persons entitled to such Defaulted Interest as in this clause
provided. Thereupon the Trustee shall fix a special record date for the payment
of such Defaulted Interest which shall not be more than fifteen nor less than
ten days prior to the date of the proposed payment and not less than ten days
after the receipt by the Trustee of the notice of the proposed payment. The
Trustee shall promptly notify the Company of such special record date and, in
the name and at the expense of the Company, shall cause notice of the proposed
payment of such Defaulted Interest and the special record date therefor to be
mailed, first class postage prepaid, to each Securityholder at his or her
address as it appears in the Debt Security Register, not less than ten days
prior to such special record date. Notice of the proposed payment of such
Defaulted Interest and the special record date therefor having been mailed as
aforesaid, such Defaulted Interest shall be paid to the Persons in whose names
such Debt Securities (or their respective Predecessor Securities) are registered
on such special record date and thereafter the Company shall have no further
payment obligation in respect of the Defaulted Interest.

          Any interest scheduled to become payable on an Interest Payment Date
occurring during an Extension Period shall not be Defaulted Interest and shall
be payable on such other date as may be specified in the terms of such Debt
Securities.

          The term "regular record date" as used in this Section shall mean the
tenth day of the month in which an Interest Payment Date shall occur whether or
not such date is a Business Day.

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

     SECTION 2.09.  Cancellation of Debt Securities Paid, etc.
                    -----------------------------------------

          All Debt Securities surrendered for the purpose of payment,
redemption, exchange or registration of transfer, shall, if surrendered to the
Company or any paying agent, be surrendered to the Trustee and promptly canceled
by it, or, if surrendered to the Trustee or any Authenticating Agent, shall be
promptly canceled by it, and no Debt Securities shall be issued in lieu thereof
except as expressly permitted by any of the provisions of this Indenture.  All
Debt Securities canceled by any Authenticating Agent shall be delivered to the
Trustee.  The Trustee shall destroy all canceled Debt Securities unless the
Company otherwise directs the Trustee in writing.  If the Company shall acquire
any of the Debt Securities, however, such acquisition shall

                                      16
<PAGE>

not operate as a redemption or satisfaction of the indebtedness represented by
such Debt Securities unless and until the same are surrendered to the Trustee
for cancellation.

     SECTION 2.10.  Computation of Interest.
                    -----------------------

          (a) The amount of interest payable for any interest period will be
computed on the basis of a 360-day year and the actual number of days elapsed in
the relevant interest period; provided, however, that upon the occurrence of a
                              --------  -------
Special Event Redemption pursuant to Section 10.02 the amounts payable pursuant
to this Declaration shall be calculated as set forth in the definition of
Special Redemption Price.

          (b) LIBOR shall be determined by the Calculation Agent in accordance
with the following provisions:

               (1) On the second LIBOR Business Day (provided that on such day
          commercial banks are open for business (including dealings in foreign
          currency deposits) in London (a "LIBOR Banking Day"), and otherwise
          the next preceding LIBOR Business Day that is also a LIBOR Banking
          Day) prior to August 1 and February 1 (except, with respect to the
          first interest payment period, on July 12, 2001), (each such day, a
          "LIBOR Determination Date"), LIBOR shall equal the rate, as obtained
          by the Calculation Agent for six-month Eurodollar deposits in Europe
          which appears on Telerate Page 3750 (as defined in the International
          Swaps and Derivatives Association, Inc. 1991 Interest Rate and
          Currency Exchange Definitions) or such other page as may replace such
          Page 3750, as of 11:00 a.m. (London time) on such LIBOR Determination
          Date, as reported by Bloomberg Financial Markets Commodities News.
          "LIBOR Business Day" means any day that is not a Saturday, Sunday or
          other day on which commercial banking institutions in New York, New
          York, are authorized or obligated by law or executive order to be
          closed. If such rate is superseded on Telerate Page 3750 by a
          corrected rate before 12:00 noon (London time) on the same LIBOR
          Determination Date, the corrected rate as so substituted will be the
          applicable LIBOR for that LIBOR Determination Date.

               (2) If, on any LIBOR Determination Date, such rate does not
          appear on Telerate Page 3750 or such other page as may replace such
          Page 3750, the Calculation Agent shall determine the arithmetic mean
          of the offered quotations of the Reference Banks (as defined below) to
          leading banks in the London interbank market for six-month U.S. Dollar
          deposits in Europe (in an amount determined by the Calculation Agent)
          by reference to requests for quotations as of approximately 11:00 a.m.
          (New York time) on the LIBOR Determination Date made by the
          Calculation Agent to the Reference Banks.  If, on any LIBOR
          Determination Date, at least two of the Reference Banks provide such
          quotations, LIBOR shall equal the arithmetic mean of such quotations.
          If, on any LIBOR Determination Date, only one or none of the Reference
          Banks provide such quotations, LIBOR shall be deemed to be the
          arithmetic mean of the offered quotations that at least two leading
          banks in The City of New York (as selected by the Calculation Agent)
          are quoting on the relevant LIBOR Determination Date for

                                      17
<PAGE>

          six-month U.S. Dollar deposits in Europe at approximately 11:00 a.m.
          (New York time) (in an amount determined by the Calculation Agent). As
          used herein, "Reference Banks" means four major banks in the London
          interbank market selected by the Calculation Agent.

               (3) If the Calculation Agent is required but is unable to
          determine a rate in accordance with at least one of the procedures
          provided above, LIBOR shall be LIBOR in effect on the previous LIBOR
          Determination Date (whether or not LIBOR for such period was in fact
          determined on such LIBOR Determination Date).

          (c) All percentages resulting from any calculations on the Debt
Securities will be rounded, if necessary, to the nearest one hundred-thousandth
of a percentage point, with five one-millionths of a percentage point rounded
upward (e.g., 9.876545% (or .09876545) being rounded to 9.87655% (or .0987655)),
and all dollar amounts used in or resulting from such calculation will be
rounded to the nearest cent (with one-half cent being rounded upward).

          (d) On each LIBOR Determination Date, the Calculation Agent shall
notify the Company and the Paying Agent of the applicable Interest Rate in
effect for the related Interest Payment.  The Calculation Agent shall, upon the
request of the holder of any Debt Securities, provide the Interest Rate then in
effect.  All calculations made by the Calculation Agent in the absence of
manifest error shall be conclusive for all purposes and binding on the Company
and the Holders of the Debt Securities.  The Paying Agent shall be entitled to
rely on information received from the Calculation Agent or the Company as to the
Interest Rate.  The Company shall, from time to time, provide any necessary
information to the Paying Agent relating to any original issue discount and
interest on the Debt Securities that is included in any payment and reportable
for taxable income calculation purposes.

     SECTION 2.11.  Extension of Interest Payment Period.
                    ------------------------------------

          So long as no Event of Default has occurred and is continuing, the
Company shall have the right, from time to time and without causing an Event of
Default, to defer payments of interest on the Debt Securities by extending the
interest payment period on the Debt Securities at any time and from time to time
during the term of the Debt Securities, for up to ten consecutive semi-annual
periods (each such extended interest payment period, an "Extension Period"),
during which Extension Period no interest shall be due and payable (except any
Additional Interest that may be due and payable).  No Extension Period may end
on a date other than an Interest Payment Date.  During any Extension Period,
interest will continue to accrue on the Debt Securities and interest on such
accrued interest (such accrued interest and interest thereon referred to herein
as "Deferred Interest") will accrue at the Interest Rate, compounded semi-
annually from the date such Deferred Interest would have been payable were it
not for the Extension Period, both to the extent permitted by law.  No interest
or Deferred Interest shall be due and payable during an Extension Period, except
at the end thereof, but each installment of interest that would otherwise have
been due and payable during such Extension Period shall bear Deferred Interest.
At the end of any such Extension Period the Company shall pay all Deferred
Interest then accrued and unpaid on the Debt Securities; provided, however, that
                                                         -------- --------
no Extension Period may extend beyond the Maturity Date; and provided further,
                                                             -------- -------
however, that during any
-------

                                      18
<PAGE>

such Extension Period, the Company shall be subject to the restrictions set
forth in Section 3.08 of this Indenture. Prior to the termination of any
Extension Period, the Company may further extend such period, provided that such
period together with all such previous and further consecutive extensions
thereof shall not exceed ten consecutive semi-annual periods, or extend beyond
the Maturity Date. Upon the termination of any Extension Period and upon the
payment of all Deferred Interest, the Company may commence a new Extension
Period, subject to the foregoing requirements. The Company must give the Trustee
notice of its election to begin such Extension Period at least one Business Day
prior to the earlier of (i) the next succeeding date on which interest on the
Debt Securities would have been payable except for the election to begin such
Extension Period or (ii) the date such interest is payable, but in any event not
later than the related regular record date. The Trustee shall give notice of the
Company's election to begin a new Extension Period to the Securityholders.

     SECTION 2.12.  CUSIP Numbers.
                    -------------

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

                                  ARTICLE III

                      PARTICULAR COVENANTS OF THE COMPANY

     SECTION 3.01.  Payment of Principal, Premium and Interest; Agreed Treatment
                    ------------------------------------------------------------
of the Debt Securities.
----------------------

          (a) The Company covenants and agrees that it will duly and punctually
pay or cause to be paid the principal of and premium, if any, and interest on
the Debt Securities at the place, at the respective times and in the manner
provided in this Indenture and the Debt Securities.  At the option of the
Company, each installment of interest on the Debt Securities may be paid (i) by
mailing checks for such interest payable to the order of the holders of Debt
Securities entitled thereto as they appear on the Debt Security Register or (ii)
by wire transfer to any account with a banking institution located in the United
States designated by such Person to the paying agent no later than the related
record date.

          (b) The Company will treat the Debt Securities as indebtedness, and
the amounts payable in respect of the principal amount of such Debt Securities
as interest, for all U.S. federal income tax purposes.  All payments in respect
of such Debt Securities will be made free and clear of U.S. withholding tax to
any beneficial owner thereof that has provided an Internal Revenue Service Form
W8 BEN (or any substitute or successor form) establishing its non-US status for
U.S. federal income tax purposes.

                                      19
<PAGE>

          (c) As of the date of this Indenture, the Company has no intention to
exercise its right under Section 2.11 to defer payments of interest on the Debt
Securities by commencing an Extension Period.

          (d) As of the date of this Indenture, the Company believes that the
likelihood that it would exercise its right under Section 2.11 to defer payments
of interest on the Debt Securities by commencing an Extension Period at any time
during which the Debt Securities are outstanding is remote because of the
restrictions that would be imposed on the Company's ability to declare or pay
dividends or distributions on, or to redeem, purchase or make a liquidation
payment with respect to, any of its outstanding equity and on the Company's
ability to make any payments of principal of or interest on, or repurchase or
redeem, any of its debt securities that rank pari passu in all respects with (or
junior in interest to) the Debt Securities.

     SECTION 3.02.  Offices for Notices and Payments, etc.
                    -------------------------------------

          So long as any of the Debt Securities remain outstanding, the Company
will maintain in Palo Alto, California, an office or agency where the Debt
Securities may be presented for payment, an office or agency where the Debt
Securities may be presented for registration of transfer and for exchange as in
this Indenture provided and an office or agency where notices and demands to or
upon the Company in respect of the Debt Securities or of this Indenture may be
served.  The Company will give to the Trustee written notice of the location of
any such office or agency and of any change of location thereof.  Until
otherwise designated from time to time by the Company in a notice to the
Trustee, or specified as contemplated by Section 2.05, such office or agency for
all of the above purposes shall be the office or agency of the Trustee.  In case
the Company shall fail to maintain any such office or agency in Palo Alto,
California, or shall fail to give such notice of the location or of any change
in the location thereof, presentations and demands may be made and notices may
be served at the principal corporate trust office of the Trustee.

          In addition to any such office or agency, the Company may from time to
time designate one or more offices or agencies outside Palo Alto, California,
where the Debt Securities may be presented for registration of transfer and for
exchange in the manner provided in this Indenture, and the Company may from time
to time rescind such designation, as the Company may deem desirable or
expedient; provided, however, that no such designation or rescission shall in
           --------  -------
any manner relieve the Company of its obligation to maintain any such office or
agency in Palo Alto, California, for the purposes above mentioned.  The Company
will give to the Trustee prompt written notice of any such designation or
rescission thereof.

                                      20
<PAGE>

     SECTION 3.03.  Appointments to Fill Vacancies in Trustee's Office.
                    --------------------------------------------------

          The Company, whenever necessary to avoid or fill a vacancy in the
office of Trustee, will appoint, in the manner provided in Section 6.09, a
Trustee, so that there shall at all times be a Trustee hereunder.

     SECTION 3.04.  Provision as to Paying Agent.
                    ----------------------------

          (a) If the Company shall appoint a paying agent other than the
Trustee, it will cause such paying agent to execute and deliver to the Trustee
an instrument in which such agent shall agree with the Trustee, subject to the
provision of this Section 3.04,

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

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

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

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

          Whenever the Company shall have one or more paying agents for the Debt
Securities, it will, on or prior to each due date of the principal of and
premium, if any, or interest, if any, on the Debt Securities, deposit with a
paying agent a sum sufficient to pay the principal, premium or interest so
becoming due, such sum to be held in trust for the benefit of the Persons
entitled thereto and (unless such paying agent is the Trustee) the Company shall
promptly notify the Trustee in writing of its action or failure to act.

          (c) Anything in this Section 3.04 to the contrary notwithstanding, the
Company may, at any time, for the purpose of obtaining a satisfaction and
discharge with respect to the Debt Securities, or for any other reason, pay, or
direct any paying agent to pay to the Trustee all sums held in trust by the
Company or any such paying agent, such sums to be held by the Trustee upon the
same terms and conditions herein contained.

                                       21
<PAGE>

          (d) Anything in this Section 3.04 to the contrary notwithstanding, the
agreement to hold sums in trust as provided in this Section 3.04 is subject to
Sections 12.03 and 12.04.

     SECTION 3.05.  Certificate to Trustee.
                    ----------------------

          The Company will deliver to the Trustee on or before 120 days after
the end of each fiscal year, so long as Debt Securities are outstanding
hereunder, a Certificate stating that in the course of the performance by the
signers of their duties as officers of the Company they would normally have
knowledge of any default by the Company in the performance of any covenants
contained herein, stating whether or not they have knowledge of any such default
and, if so, specifying each such default of which the signers have knowledge and
the nature thereof.

     SECTION 3.06.  Additional Interest.
                    -------------------

          If and for so long as the Trust is the holder of all Debt Securities
and is required to pay any additional taxes, duties, assessments or other
governmental charges as a result of a Tax Event, the Company will pay such
additional amounts (the "Additional Interest") on the Debt Securities as shall
be required so that the net amounts received and retained by the Trust after
paying taxes, duties, assessments or other governmental charges will be equal to
the amounts the Trust would have received if no such taxes, duties, assessments
or other governmental charges had been imposed.  Whenever in this Indenture or
the Debt Securities there is a reference in any context to the payment of
principal of or interest on the Debt Securities, such mention shall be deemed to
include mention of payments of the Additional Interest provided for in this
paragraph to the extent that, in such context, Additional Interest is, was or
would be payable in respect thereof pursuant to the provisions of this paragraph
and express mention of the payment of Additional Interest (if applicable) in any
provisions hereof shall not be construed as excluding Additional Interest in
those provisions hereof where such express mention is not made, provided,
                                                                --------
however, that the deferral of the payment of interest during an Extension Period
-------
pursuant to Section 2.11 shall not defer the payment of any Additional Interest
that may be due and payable.

     SECTION 3.07.  Compliance with Consolidation Provisions.
                    ----------------------------------------

          The Company will not, while any of the Debt Securities remain
outstanding, consolidate with, or merge into, or merge into itself, or sell or
convey all or substantially all of its property to any other Person unless the
provisions of Article XI hereof are complied with.

     SECTION 3.08.  Limitation on Dividends.
                    -----------------------

          If Debt Securities are initially issued to the Trust or a trustee of
such trust in connection with the issuance of Trust Securities by the Trust
(regardless of whether Debt Securities continue to be held by such trust) and
(i) there shall have occurred and be continuing an Event of Default, (ii) the
Company shall be in default with respect to its payment of any obligations under
the Capital Securities Guarantee or (iii) the Company shall have given notice of
its election to defer payments of interest on the Debt Securities by extending
the interest payment period as provided herein and such period, or any extension
thereof, shall have commenced and be continuing, then the Company may not (A)
declare or pay any dividends or distributions on, or redeem, purchase, acquire,
or make a liquidation payment with respect to,

                                       22
<PAGE>

any of the Company's capital stock or (B) make any payment of principal of or
interest or premium, if any, on or repay, repurchase or redeem any debt
securities of the Company that rank pari passu in all respects with or junior in
interest to the Debt Securities (other than (a) repurchases, redemptions or
other acquisitions of shares of capital stock of the Company in connection with
any employment contract, benefit plan or other similar arrangement with or for
the benefit of one or more employees, officers, directors or consultants, in
connection with a dividend reinvestment or stockholder stock purchase plan or in
connection with the issuance of capital stock of the Company (or securities
convertible into or exercisable for such capital stock) as consideration in an
acquisition transaction entered into prior to the occurrence of (i), (ii) or
(iii) above, (b) as a result of any exchange or conversion of any class or
series of the Company's capital stock (or any capital stock of a subsidiary of
the Company) for any class or series of the Company's capital stock or of any
class or series of the Company's indebtedness for any class or series of the
Company's capital stock, (c) the purchase of fractional interests in shares of
the Company's capital stock pursuant to the conversion or exchange provisions of
such capital stock or the security being converted or exchanged, (d) any
declaration of a dividend in connection with any stockholder's rights plan, or
the issuance of rights, stock or other property under any stockholder's rights
plan, or the redemption or repurchase of rights pursuant thereto, or (e) any
dividend in the form of stock, warrants, options or other rights where the
dividend stock or the stock issuable upon exercise of such warrants, options or
other rights is the same stock as that on which the dividend is being paid or
ranks pari passu with or junior to such stock).

     SECTION 3.09.  Covenants as to the Trust.
                    -------------------------

          For so long as such Trust Securities remain outstanding, the Company
shall maintain 100% ownership of the Common Securities; provided, however, that
                                                        --------  -------
any permitted successor of the Company under this Indenture that is a U.S.
Person may succeed to the Company's ownership of such Common Securities.  The
Company, as owner of the Common Securities, shall use commercially reasonable
efforts to cause the Trust (a) to remain a statutory business trust, except in
connection with a distribution of Debt Securities to the holders of Trust
Securities in liquidation of the Trust, the redemption of all of the Trust
Securities or certain mergers, consolidations or amalgamations, each as
permitted by the Declaration, (b) to otherwise continue to be classified as a
grantor trust for United States federal income tax purposes and (c) to cause
each holder of Trust Securities to be treated as owning an undivided beneficial
interest in the Debt Securities.

                                       23
<PAGE>

                                  ARTICLE IV

                               LISTS AND REPORTS
                        BY THE COMPANY AND THE TRUSTEE

     SECTION 4.01.  Securityholders' Lists.
                    ----------------------

          The Company covenants and agrees that it will furnish or cause to be
furnished to the Trustee:

          (a) on each regular record date for an Interest Payment Date, a list,
in such form as the Trustee may reasonably require, of the names and addresses
of the Securityholders of the Debt Securities as of such record date; and

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

except that no such lists need be furnished under this Section 4.01 so long as
the Trustee is in possession thereof by reason of its acting as Debt Security
registrar.

     SECTION 4.02.  Preservation and Disclosure of Lists.
                    ------------------------------------

          (a) The Trustee shall preserve, in as current a form as is reasonably
practicable, all information as to the names and addresses of the holders of
Debt Securities (1) contained in the most recent list furnished to it as
provided in Section 4.01 or (2) received by it in the capacity of Debt
Securities registrar (if so acting) hereunder.  The Trustee may destroy any list
furnished to it as provided in Section 4.01 upon receipt of a new list so
furnished.

          (b) In case three or more holders of Debt Securities (hereinafter
referred to as "applicants") apply in writing to the Trustee and furnish to the
Trustee reasonable proof that each such applicant has owned a Debt Security for
a period of at least six months preceding the date of such application, and such
application states that the applicants desire to communicate with other holders
of Debt Securities with respect to their rights under this Indenture or under
such Debt Securities and is accompanied by a copy of the form of proxy or other
communication which such applicants propose to transmit, then the Trustee shall
within five Business Days after the receipt of such application, at its
election, either:

               (1) afford such applicants access to the information preserved at
     the time by the Trustee in accordance with the provisions of subsection (a)
     of this Section 4.02, or

               (2) inform such applicants as to the approximate number of
     holders of Debt Securities whose names and addresses appear in the
     information preserved at the time by the Trustee in accordance with the
     provisions of subsection (a) of this Section 4.02, and as to the
     approximate cost of mailing to such Securityholders the form of proxy or
     other communication, if any, specified in such application.

                                       24
<PAGE>

      If the Trustee shall elect not to afford such applicants access to such
information, the Trustee shall, upon the written request of such applicants,
mail to each Securityholder of Debt Securities whose name and address appear in
the information preserved at the time by the Trustee in accordance with the
provisions of subsection (a) of this Section 4.02 a copy of the form of proxy or
other communication which is specified in such request with reasonable
promptness after a tender to the Trustee of the material to be mailed and of
payment, or provision for the payment, of the reasonable expenses of mailing,
unless within five days after such tender, the Trustee shall mail to such
applicants and file with the Securities and Exchange Commission, if permitted or
required by applicable law, together with a copy of the material to be mailed, a
written statement to the effect that, in the opinion of the Trustee, such
mailing would be contrary to the best interests of the holders of all Debt
Securities, as the case may be, or would be in violation of applicable law.
Such written statement shall specify the basis of such opinion.  If said
Commission, as permitted or required by applicable law, after opportunity for a
hearing upon the objections specified in the written statement so filed, shall
enter an order refusing to sustain any of such objections or if, after the entry
of an order sustaining one or more of such objections, said Commission shall
find, after notice and opportunity for hearing, that all the objections so
sustained have been met and shall enter an order so declaring, the Trustee shall
mail copies of such material to all such Securityholders with reasonable
promptness after the entry of such order and the renewal of such tender;
otherwise the Trustee shall be relieved of any obligation or duty to such
applicants respecting their application.

          (c) Each and every holder of Debt Securities, by receiving and holding
the same, agrees with the Company and the Trustee that neither the Company nor
the Trustee nor any paying agent shall be held accountable by reason of the
disclosure of any such information as to the names and addresses of the holders
of Debt Securities in accordance with the provisions of subsection (b) of this
Section 4.02, regardless of the source from which such information was derived,
and that the Trustee shall not be held accountable by reason of mailing any
material pursuant to a request made under said subsection (b).

                                   ARTICLE V

                  REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS
                           UPON AN EVENT OF DEFAULT

     SECTION 5.01.  Events of Default.
                    -----------------

          The following Events of Default shall be "Events of Default" with
respect to Debt Securities:

          (a) the Company defaults in the payment of any interest upon any Debt
Security when it becomes due and payable, and continuance of such default for a
period of 30 days; for the avoidance of doubt, an extension of any interest
payment period by the Company in accordance with Section 2.11 of this Indenture
shall not constitute a default under this clause 5.01(a); or

                                       25
<PAGE>

          (b) the Company defaults in the payment of all or any part of the
principal of (or premium, if any, on) any Debt Securities as and when the same
shall become due and payable either at maturity, upon redemption, by declaration
of acceleration or otherwise; or

          (c) the Company defaults in the performance of, or breaches, any of
its covenants or agreements in Sections 3.06, 3.07, 3.08 and 3.09 of this
Indenture (other than a covenant or agreement a default in whose performance or
whose breach is elsewhere in this Section specifically dealt with), and
continuance of such default or breach for a period of 90 days after there has
been given, by registered or certified mail, to the Company by the Trustee or to
the Company and the Trustee by the holders of at least 25% in aggregate
principal amount of the outstanding Debt Securities, a written notice specifying
such default or breach and requiring it to be remedied and stating that such
notice is a "Notice of Default" hereunder; or

          (d) a court having jurisdiction in the premises shall enter a decree
or order for relief in respect of the Company in an involuntary case under any
applicable bankruptcy, insolvency or other similar law now or hereafter in
effect, or appoints a receiver, liquidator, assignee, custodian, trustee,
sequestrator (or similar official) of the Company or for any substantial part of
its property, or orders the winding-up or liquidation of its affairs and such
decree or order shall remain unstayed and in effect for a period of 90
consecutive days; or

          (e) the Company shall commence a voluntary case under any applicable
bankruptcy, insolvency or other similar law now or hereafter in effect, shall
consent to the entry of an order for relief in an involuntary case under any
such law, or shall consent to the appointment of or taking possession by a
receiver, liquidator, assignee, trustee, custodian, sequestrator (or other
similar official) of the Company or of any substantial part of its property, or
shall make any general assignment for the benefit of creditors, or shall fail
generally to pay its debts as they become due; or

          (f) the Trust shall have voluntarily or involuntarily liquidated,
dissolved, wound-up its business or otherwise terminated its existence except in
connection with (1) the distribution of the Debt Securities to holders of such
Trust Securities in liquidation of their interests in the Trust, (2) the
redemption of all of the outstanding Trust Securities or (3) certain mergers,
consolidations or amalgamations, each as permitted by the Declaration.

          If an Event of Default occurs and is continuing with respect to the
Debt Securities, then, and in each and every such case, unless the principal of
the Debt Securities shall have already become due and payable, either the
Trustee or the holders of not less than 25% in aggregate principal amount of the
Debt Securities then outstanding hereunder, by notice in writing to the Company
(and to the Trustee if given by Securityholders), may declare the entire
principal of the Debt Securities and the interest accrued thereon, if any, to be
due and payable immediately, and upon any such declaration the same shall become
immediately due and payable.

          The foregoing provisions, however, are subject to the condition that
if, at any time after the principal of the Debt Securities shall have been so
declared due and payable, and before any judgment or decree for the payment of
the moneys due shall have been obtained or entered as hereinafter provided, (i)
the Company shall pay or shall deposit with the Trustee a sum

                                       26
<PAGE>

sufficient to pay all matured installments of interest upon all the Debt
Securities and the principal of and premium, if any, on the Debt Securities
which shall have become due otherwise than by acceleration (with interest upon
such principal and premium, if any, and Deferred Interest, to the extent
permitted by law) and such amount as shall be sufficient to cover reasonable
compensation to the Trustee and each predecessor Trustee, their respective
agents, attorneys and counsel, and all other amounts due to the Trustee pursuant
to Section 6.06, and if any and (ii) all Events of Default under this Indenture,
other than the non-payment of the principal of or premium, if any, on Debt
Securities which shall have become due by acceleration, shall have been cured,
waived or otherwise remedied as provided herein -- then and in every such case
the holders of a majority in aggregate principal amount of the Debt Securities
then outstanding, by written notice to the Company and to the Trustee, may waive
all defaults and rescind and annul such declaration and its consequences, but no
such waiver or rescission and annulment shall extend to or shall affect any
subsequent default or shall impair any right consequent thereon.

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

     SECTION 5.02.  Payment of Debt Securities on Default; Suit Therefor.

          The Company covenants that upon the occurrence of an Event of Default
pursuant to clause 5.01(a) or 5.01(b) and upon demand of the Trustee, the
Company will pay to the Trustee, for the benefit of the holders of the Debt
Securities the whole amount that then shall have become due and payable on all
Debt Securities for principal and premium, if any, or interest, or both, as the
case may be, including Deferred Interest accrued on the Debt Securities; and, in
addition thereto, such further amount as shall be sufficient to cover the costs
and expenses of collection, including a reasonable compensation to the Trustee,
its agents, attorneys and counsel, and any other amounts due to the Trustee
under Section 6.06.  In case the Company shall fail forthwith to pay such
amounts upon such demand, the Trustee, in its own name and as trustee of an
express trust, shall be entitled and empowered to institute any actions or
proceedings at law or in equity for the collection of the sums so due and
unpaid, and may prosecute any such action or proceeding to judgment or final
decree, and may enforce any such judgment or final decree against the Company or
any other obligor on such Debt Securities and collect in the manner provided by
law out of the property of the Company or any other obligor on such Debt
Securities wherever situated the moneys adjudged or decreed to be payable.

          In case there shall be pending proceedings for the bankruptcy or for
the reorganization of the Company or any other obligor on the Debt Securities
under Bankruptcy Law, or in case a receiver or trustee shall have been appointed
for the property of the Company or such other obligor, or in the case of any
other similar judicial proceedings relative to the Company or other obligor upon
the Debt Securities, or to the creditors or property of the Company or such
other obligor, the Trustee, irrespective of whether the principal of the Debt
Securities shall then be due and payable as therein expressed or by declaration
of acceleration or

                                       27
<PAGE>

otherwise and irrespective of whether the Trustee shall have made any demand
pursuant to the provisions of this Section 5.02, shall be entitled and
empowered, by intervention in such proceedings or otherwise, to file and prove a
claim or claims for the whole amount of principal and interest owing and unpaid
in respect of the Debt Securities and, in case of any judicial proceedings, to
file such proofs of claim and other papers or documents as may be necessary or
advisable in order to have the claims of the Trustee (including any claim for
reasonable compensation to the Trustee and each predecessor Trustee, and their
respective agents, attorneys and counsel, and for reimbursement of all other
amounts due to the Trustee under Section 6.06) and of the Securityholders
allowed in such judicial proceedings relative to the Company or any other
obligor on the Debt Securities, or to the creditors or property of the Company
or such other obligor, unless prohibited by applicable law and regulations, to
vote on behalf of the holders of the Debt Securities in any election of a
trustee or a standby trustee in arrangement, reorganization, liquidation or
other bankruptcy or insolvency proceedings or Person performing similar
functions in comparable proceedings, and to collect and receive any moneys or
other property payable or deliverable on any such claims, and to distribute the
same after the deduction of its charges and expenses; and any receiver, assignee
or trustee in bankruptcy or reorganization is hereby authorized by each of the
Securityholders to make such payments to the Trustee, and, in the event that the
Trustee shall consent to the making of such payments directly to the
Securityholders, to pay to the Trustee such amounts as shall be sufficient to
cover reasonable compensation to the Trustee, each predecessor Trustee and their
respective agents, attorneys and counsel, and all other amounts due to the
Trustee under Section 6.06.

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

          All rights of action and of asserting claims under this Indenture, or
under any of the Debt Securities, may be enforced by the Trustee without the
possession of any of the Debt Securities, or the production thereof at any trial
or other proceeding relative thereto, and any such suit or proceeding instituted
by the Trustee shall be brought in its own name as trustee of an express trust,
and any recovery of judgment shall be for the ratable benefit of the holders of
the Debt Securities.

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

     SECTION 5.03.  Application of Moneys Collected by Trustee.

          Any moneys collected by the Trustee shall be applied in the following
order, at the date or dates fixed by the Trustee for the distribution of such
moneys, upon presentation of the several Debt Securities in respect of which
moneys have been collected, and stamping thereon the payment, if only partially
paid, and upon surrender thereof if fully paid:

                                       28
<PAGE>

          First: To the payment of costs and expenses incurred by, and
reasonable fees of, the Trustee, its agents, attorneys and counsel, and of all
other amounts due to the Trustee under Section 6.06;

          Second: To the payment of all Senior Indebtedness of the Company if
and to the extent required by Article XV;

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

          Fourth: The balance, if any, to the Company.

     SECTION 5.04.  Proceedings by Securityholders.

          No holder of any Debt Security shall have any right to institute any
suit, action or proceeding for any remedy hereunder, unless such holder
previously shall have given to the Trustee written notice of an Event of Default
with respect to the Debt Securities and unless the holders of not less than 25%
in aggregate principal amount of the Debt Securities then outstanding shall have
given the Trustee a written request to institute such action, suit or proceeding
and shall have offered to the Trustee such reasonable indemnity as it may
require against the costs, expenses and liabilities to be incurred thereby, and
the Trustee for 60 days after its receipt of such notice, request and offer of
indemnity shall have failed to institute any such action, suit or proceeding;
provided, that no holder of Debt Securities shall have any right to prejudice
--------
the rights of any other holder of Debt Securities, obtain priority or preference
over any other such holder or enforce any right under this Indenture except in
the manner herein provided and for the equal, ratable and common benefit of all
holders of Debt Securities.

          Notwithstanding any other provisions in this Indenture, however, the
right of any holder of any Debt Security to receive payment of the principal of,
premium, if any, and interest, on such Debt Security when due, or to institute
suit for the enforcement of any such payment, shall not be impaired or affected
without the consent of such holder.  For the protection and enforcement of the
provisions of this Section, each and every Securityholder and the Trustee shall
be entitled to such relief as can be given either at law or in equity.

                                       29
<PAGE>

     SECTION 5.05.  Proceedings by Trustee.

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

     SECTION 5.06.  Remedies Cumulative and Continuing.

          Except as otherwise provided in Section 2.06, all powers and remedies
given by this Article V to the Trustee or to the Securityholders shall, to the
extent permitted by law, be deemed cumulative and not exclusive of any other
powers and remedies available to the Trustee or the holders of the Debt
Securities, by judicial proceedings or otherwise, to enforce the performance or
observance of the covenants and agreements contained in this Indenture or
otherwise established with respect to the Debt Securities, and no delay or
omission of the Trustee or of any holder of any of the Debt Securities to
exercise any right or power accruing upon any Event of Default occurring and
continuing as aforesaid shall impair any such right or power, or shall be
construed to be a waiver of any such default or an acquiescence therein; and,
subject to the provisions of Section 5.04, every power and remedy given by this
Article V or by law to the Trustee or to the Securityholders may be exercised
from time to time, and as often as shall be deemed expedient, by the Trustee or
by the Securityholders.

     SECTION 5.07.  Direction of Proceedings and Waiver of Defaults by Majority
of Securityholders.

          The holders of a majority in aggregate principal amount of the Debt
Securities affected (voting as one class) at the time outstanding shall have the
right to direct the time, method, and place of conducting any proceeding for any
remedy available to the Trustee, or exercising any trust or power conferred on
the Trustee with respect to such Debt Securities; provided, however, that
                                                  --------  -------
(subject to the provisions of Section 6.01) the Trustee shall have the right to
decline to follow any such direction if the Trustee shall determine that the
action so directed would be unjustly prejudicial to the holders not taking part
in such direction or if the Trustee being advised by counsel determines that the
action or proceeding so directed may not lawfully be taken or if a Responsible
Officer of the Trustee shall determine that the action or proceedings so
directed would involve the Trustee in personal liability.  Prior to any
declaration accelerating the maturity of the Debt Securities, the holders of a
majority in aggregate principal amount of the Debt Securities at the time
outstanding may on behalf of the holders of all of the Debt Securities waive (or
modify any previously granted waiver of) any past default or Event of Default
and its consequences, except a default (a) in the payment of principal of,
premium, if any, or interest on any of the Debt Securities, (b) in respect of
covenants or provisions hereof which cannot be modified or amended without the
consent of the holder of each Debt Security affected, or (c)  in respect of the
covenants contained in Section 3.09; provided, however, that if the Debt
                                     --------  -------
Securities are held by the Trust or a trustee of such trust, such waiver or
modification to such waiver shall not be effective until the holders of a
majority in liquidation preference of

                                       30
<PAGE>

Trust Securities of the Trust shall have consented to such waiver or
modification to such waiver; provided, further, that if the consent of the
holder of each outstanding Debt Security is required, such waiver shall not be
effective until each holder of the Trust Securities of the Trust shall have
consented to such waiver. Upon any such waiver, the default covered thereby
shall be deemed to be cured for all purposes of this Indenture and the Company,
the Trustee and the holders of the Debt Securities shall be restored to their
former positions and rights hereunder, respectively; but no such waiver shall
extend to any subsequent or other default or Event of Default or impair any
right consequent thereon. Whenever any default or Event of Default hereunder
shall have been waived as permitted by this Section 5.07, said default or Event
of Default shall for all purposes of the Debt Securities and this Indenture be
deemed to have been cured and to be not continuing.

     SECTION 5.08.  Notice of Defaults.

          The Trustee shall, within 90 days after a Responsible Officer of the
Trustee shall have received notice or obtained actual knowledge of the
occurrence of a default with respect to the Debt Securities, mail to all
Securityholders, as the names and addresses of such holders appear upon the Debt
Security Register, notice of all defaults with respect to the Debt Securities
known to the Trustee, unless such defaults shall have been cured before the
giving of such notice (the term "defaults" for the purpose of this Section 5.08
being hereby defined to be the events specified in subsections (a), (b), (c),
(d) and (e) of Section 5.01, not including periods of grace, if any, provided
for therein); provided, that, except in the case of default in the payment of
              --------
the principal of, premium, if any, or interest on any of the Debt Securities,
the Trustee shall be protected in withholding such notice if and so long as a
Responsible Officer of the Trustee in good faith determines that the withholding
of such notice is in the interests of the Securityholders.

     SECTION 5.09.  Undertaking to Pay Costs.

          All parties to this Indenture agree, and each holder of any Debt
Security by his acceptance thereof shall be deemed to have agreed, that any
court may in its discretion require, in any suit for the enforcement of any
right or remedy under this Indenture, or in any suit against the Trustee for any
action taken or omitted by it as Trustee, the filing by any party litigant in
such suit of an undertaking to pay the costs of such suit, and that such court
may in its discretion assess reasonable costs, including reasonable attorneys'
fees and expenses, against any party litigant in such suit, having due regard to
the merits and good faith of the claims or defenses made by such party litigant;
but the provisions of this Section 5.09 shall not apply to any suit instituted
by the Trustee, to any suit instituted by any Securityholder, or group of
Securityholders, holding in the aggregate more than 10% in principal amount of
the Debt Securities outstanding, or to any suit instituted by any Securityholder
for the enforcement of the payment of the principal of (or premium, if any) or
interest on any Debt Security against the Company on or after the same shall
have become due and payable.

                                       31
<PAGE>

                                  ARTICLE VI

                            CONCERNING THE TRUSTEE

     SECTION 6.01.  Duties and Responsibilities of Trustee.

          With respect to the holders of Debt Securities issued hereunder, the
Trustee, prior to the occurrence of an Event of Default with respect to the Debt
Securities and after the curing or waiving of all Events of Default which may
have occurred, with respect to the Debt Securities, undertakes to perform such
duties and only such duties as are specifically set forth in this Indenture.  In
case an Event of Default with respect to the Debt Securities has occurred (which
has not been cured or waived) the Trustee shall exercise such of the rights and
powers vested in it by this Indenture, and use the same degree of care and skill
in their exercise, as a prudent man would exercise or use under the
circumstances in the conduct of his own affairs.

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

          (a) prior to the occurrence of an Event of Default with respect to
Debt Securities and after the curing or waiving of all Events of Default which
may have occurred

               (1) the duties and obligations of the Trustee with respect to
     Debt Securities shall be determined solely by the express provisions of
     this Indenture, and the Trustee shall not be liable except for the
     performance of such duties and obligations with respect to the Debt
     Securities as are specifically set forth in this Indenture, and no implied
     covenants or obligations shall be read into this Indenture against the
     Trustee, and

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

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

          (c) the Trustee shall not be liable with respect to any action taken
or omitted to be taken by it in good faith, in accordance with the direction of
the Securityholders pursuant to Section 5.07, relating to the time, method and
place of conducting any proceeding for any remedy available to the Trustee, or
exercising any trust or power conferred upon the Trustee, under this Indenture.

                                       32
<PAGE>

          None of the provisions contained in this Indenture shall require the
Trustee to expend or risk its own funds or otherwise incur personal financial
liability in the performance of any of its duties or in the exercise of any of
its rights or powers.

     SECTION 6.02.  Reliance on Documents, Opinions, etc.

          Except as otherwise provided in Section 6.01:

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

          (b) any request, direction, order or demand of the Company mentioned
herein shall be sufficiently evidenced by an Officers' Certificate (unless other
evidence in respect thereof be herein specifically prescribed); and any Board
Resolution may be evidenced to the Trustee by a copy thereof certified by the
Secretary or an Assistant Secretary of the Company;

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

          (d) the Trustee shall be under no obligation to exercise any of the
rights or powers vested in it by this Indenture at the request, order or
direction of any of the Securityholders, pursuant to the provisions of this
Indenture, unless such Securityholders shall have offered to the Trustee
reasonable security or indemnity against the costs, expenses and liabilities
which may be incurred therein or thereby;

          (e) the Trustee shall not be liable for any action taken or omitted by
it in good faith and believed by it to be authorized or within the discretion or
rights or powers conferred upon it by this Indenture; nothing contained herein
shall, however, relieve the Trustee of the obligation, upon the occurrence of an
Event of Default with respect to the Debt Securities (that has not been cured or
waived) to exercise with respect to Debt Securities such of the rights and
powers vested in it by this Indenture, and to use the same degree of care and
skill in their exercise, as a prudent man would exercise or use under the
circumstances in the conduct of his own affairs;

          (f) the Trustee shall not be bound to make any investigation into the
facts or matters stated in any resolution, certificate, statement, instrument,
opinion, report, notice, request, consent, order, approval, bond, debenture,
coupon or other paper or document, unless requested in writing to do so by the
holders of not less than a majority in principal amount of the outstanding Debt
Securities affected thereby; provided, however, that if the payment within a
                             --------  -------
reasonable time to the Trustee of the costs, expenses or liabilities likely to
be incurred by it in the making of such investigation is, in the opinion of the
Trustee, not reasonably assured to the Trustee by the security afforded to it by
the terms of this Indenture, the Trustee may require reasonable indemnity
against such expense or liability as a condition to so proceeding;

                                       33
<PAGE>

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

          (h) the Trustee shall not be charged with knowledge of any Default or
Event of Default with respect to the Debt Securities unless either (1) a
Responsible Officer shall have actual knowledge of such Default or Event of
Default or (2) written notice of such Default or Event of Default shall have
been given to the Trustee by the Company or any other obligor on the Debt
Securities or by any holder of the Debt Securities.

     SECTION 6.03.  No Responsibility for Recitals, etc.

          The recitals contained herein and in the Debt Securities (except in
the certificate of authentication of the Trustee or the Authenticating Agent)
shall be taken as the statements of the Company and the Trustee and the
Authenticating Agent assume no responsibility for the correctness of the same.
The Trustee and the Authenticating Agent make no representations as to the
validity or sufficiency of this Indenture or of the Debt Securities.  The
Trustee and the Authenticating Agent shall not be accountable for the use or
application by the Company of any Debt Securities or the proceeds of any Debt
Securities authenticated and delivered by the Trustee or the Authenticating
Agent in conformity with the provisions of this Indenture.

     SECTION 6.04.  Trustee, Authenticating Agent, Paying Agents, Transfer
Agents or Registrar May Own Debt Securities.

          The Trustee or any Authenticating Agent or any paying agent or any
transfer agent or any Debt Security registrar, in its individual or any other
capacity, may become the owner or pledgee of Debt Securities with the same
rights it would have if it were not Trustee, Authenticating Agent, paying agent,
transfer agent or Debt Security registrar.

     SECTION 6.05.  Moneys to be Held in Trust.

          Subject to the provisions of Section 12.04, all moneys received by the
Trustee or any paying agent shall, until used or applied as herein provided, be
held in trust for the purpose for which they were received, but need not be
segregated from other funds except to the extent required by law.  The Trustee
and any paying agent shall be under no liability for interest on any money
received by it hereunder except as otherwise agreed in writing with the Company.
So long as no Event of Default shall have occurred and be continuing, all
interest allowed on any such moneys, if any, shall be paid from time to time to
the Company upon the written order of the Company, signed by the Chairman of the
Board of Directors, the President, the Chief Operating Officer, a Vice
President, the Treasurer or an Assistant Treasurer of the Company.

     SECTION 6.06.  Compensation and Expenses of Trustee.

          The Company covenants and agrees to pay to the Trustee from time to
time, and the Trustee shall be entitled to, such compensation as shall be agreed
to in writing between the Company and the Trustee (which shall not be limited by
any provision of law in regard to the compensation of a trustee of an express
trust), and the Company will pay or reimburse the

                                       34
<PAGE>

Trustee upon its written request for all documented reasonable expenses,
disbursements and advances incurred or made by the Trustee in accordance with
any of the provisions of this Indenture (including the reasonable compensation
and the expenses and disbursements of its counsel and of all Persons not
regularly in its employ) except any such expense, disbursement or advance as may
arise from its negligence or bad faith. The Company also covenants to indemnify
each of the Trustee or any predecessor Trustee (and its officers, agents,
directors and employees) for, and to hold it harmless against, any and all loss,
damage, claim, liability or expense including taxes (other than taxes based on
the income of the Trustee) incurred without negligence or bad faith on the part
of the Trustee and arising out of or in connection with the acceptance or
administration of this Trust, including the costs and expenses of defending
itself against any claim of liability in the premises. The obligations of the
Company under this Section 6.06 to compensate and indemnify the Trustee and to
pay or reimburse the Trustee for documented expenses, disbursements and advances
shall constitute additional indebtedness hereunder. Such additional indebtedness
shall be secured by a lien prior to that of the Debt Securities upon all
property and funds held or collected by the Trustee as such, except funds held
in trust for the benefit of the holders of particular Debt Securities.

          Without prejudice to any other rights available to the Trustee under
applicable law, when the Trustee incurs expenses or renders services in
connection with an Event of Default specified in subsections (d), (e) or (f) of
Section 5.01, the expenses (including the reasonable charges and expenses of its
counsel) and the compensation for the services are intended to constitute
expenses of administration under any applicable federal or state bankruptcy,
insolvency or other similar law.

          The provisions of this Section shall survive the resignation or
removal of the Trustee and the defeasance or other termination of this
Indenture.

     SECTION 6.07.  Officers' Certificate as Evidence.

          Except as otherwise provided in Sections 6.01 and 6.02, whenever in
the administration of the provisions of this Indenture the Trustee shall deem it
necessary or desirable that a matter be proved or established prior to taking or
omitting any action hereunder, such matter (unless other evidence in respect
thereof be herein specifically prescribed) may, in the absence of negligence or
bad faith on the part of the Trustee, be deemed to be conclusively proved and
established by an Officers' Certificate delivered to the Trustee, and such
certificate, in the absence of negligence or bad faith on the part of the
Trustee, shall be full warrant to the Trustee for any action taken or omitted by
it under the provisions of this Indenture upon the faith thereof.

                                       35
<PAGE>

     SECTION 6.08.  Eligibility of Trustee.

          The Trustee hereunder shall at all times be a U.S. Person that is a
banking corporation organized and doing business under the laws of the United
States of America or any state thereof or of the District of Columbia and
authorized under such laws to exercise corporate trust powers, having a combined
capital and surplus of at least 50 million U.S. dollars ($50,000,000) and
subject to supervision or examination by federal, state, or District of Columbia
authority.  If such corporation publishes reports of condition at least
annually, pursuant to law or to the requirements of the aforesaid supervising or
examining authority, then for the purposes of this Section 6.08 the combined
capital and surplus of such corporation shall be deemed to be its combined
capital and surplus as set forth in its most recent records of condition so
published.

          The Company may not, nor may any Person directly or indirectly
controlling, controlled by, or under common control with the Company, serve as
Trustee, nothwithstanding that such corporation shall be otherwise eligible and
qualified under this Article.

          In case at any time the Trustee shall cease to be eligible in
accordance with the provisions of this Section 6.08, the Trustee shall resign
immediately in the manner and with the effect specified in Section 6.09.

          If the Trustee has or shall acquire any "conflicting interest" within
the meaning of (S) 310(b) of the Trust Indenture Act, the Trustee shall either
eliminate such interest or resign, to the extent and in the manner provided by,
and subject to this Indenture.

     SECTION 6.09.  Resignation or Removal of Trustee.

          (a) The Trustee, or any trustee or trustees hereafter appointed, may
at any time resign by giving written notice of such resignation to the Company
and by mailing notice thereof, at the Company's expense, to the holders of the
Debt Securities at their addresses as they shall appear on the Debt Security
Register.  Upon receiving such notice of resignation, the Company shall promptly
appoint a successor trustee or trustees by written instrument, in duplicate,
executed by order of its Board of Directors, one copy of which instrument shall
be delivered to the resigning Trustee and one copy to the successor Trustee.  If
no successor Trustee shall have been so appointed and have accepted appointment
within 30 days after the mailing of such notice of resignation to the affected
Securityholders, the resigning Trustee may petition any court of competent
jurisdiction for the appointment of a successor Trustee, or any Securityholder
who has been a bona fide holder of a Debt Security or Debt Securities for at
least six months may, subject to the provisions of Section 5.09, on behalf of
himself and all others similarly situated, petition any such court for the
appointment of a successor Trustee.  Such court may thereupon, after such
notice, if any, as it may deem proper and prescribe, appoint a successor
Trustee.

          (b) In case at any time any of the following shall occur --

               (1) the Trustee shall fail to comply with the provisions of the
     last paragraph of Section 6.08 after written request therefor by the
     Company or by any

                                       36
<PAGE>

     Securityholder who has been a bona fide holder of a Debt Security or Debt
     Securities for at least six months,

               (2) the Trustee shall cease to be eligible in accordance with the
     provisions of Section 6.08 and shall fail to resign after written request
     therefor by the Company or by any such Securityholder, or

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

then, in any such case, the Company may remove the Trustee and appoint a
successor Trustee by written instrument, in duplicate, executed by order of the
Board of Directors, one copy of which instrument shall be delivered to the
Trustee so removed and one copy to the successor Trustee, or, subject to the
provisions of Section 5.09, any Securityholder who has been a bona fide holder
of a Debt Security or Debt Securities for at least six months may, on behalf of
himself and all others similarly situated, petition any court of competent
jurisdiction for the removal of the Trustee and the appointment of a successor
Trustee.  Such court may thereupon, after such notice, if any, as it may deem
proper and prescribe, remove the Trustee and appoint successor Trustee.

          (c) Upon prior written notice to the Company and the Trustee, the
holders of a majority in aggregate principal amount of the Debt Securities at
the time outstanding may at any time remove the Trustee and nominate a successor
Trustee, which shall be deemed appointed as successor Trustee unless within ten
Business Days after such nomination the Company objects thereto, in which case
or in the case of a failure by such holders to nominate a successor Trustee, the
Trustee so removed or any Securityholder, upon the terms and conditions and
otherwise as in subsection (a) of this Section 6.09 provided, may petition any
court of competent jurisdiction for an appointment of a successor.

          (d) Any resignation or removal of the Trustee and appointment of a
successor Trustee pursuant to any of the provisions of this Section 6.09 shall
become effective upon acceptance of appointment by the successor Trustee as
provided in Section 6.10.

     SECTION 6.10.  Acceptance by Successor Trustee.

          Any successor Trustee appointed as provided in Section 6.09 shall
execute, acknowledge and deliver to the Company and to its predecessor Trustee
an instrument accepting such appointment hereunder, and thereupon the
resignation or removal of the retiring Trustee shall become effective and such
successor Trustee, without any further act, deed or conveyance, shall become
vested with all the rights, powers, duties and obligations with respect to the
Debt Securities of its predecessor hereunder, with like effect as if originally
named as Trustee herein; but, nevertheless, on the written request of the
Company or of the successor Trustee, the Trustee ceasing to act shall, upon
payment of any amounts then due it pursuant to the provisions of Section 6.06,
execute and deliver an instrument transferring to such successor Trustee all the
rights and powers of the Trustee so ceasing to act and shall duly assign,
transfer and deliver to

                                       37
<PAGE>

such successor Trustee all property and money held by such retiring Trustee
thereunder. Upon request of any such successor Trustee, the Company shall
execute any and all instruments in writing for more fully and certainly vesting
in and confirming to such successor Trustee all such rights and powers. Any
Trustee ceasing to act shall, nevertheless, retain a lien upon all property or
funds held or collected by such Trustee to secure any amounts then due it
pursuant to the provisions of Section 6.06.

          If a successor Trustee is appointed, the Company, the retiring Trustee
and the  successor Trustee shall execute and deliver an indenture supplemental
hereto which shall contain such provisions as shall be deemed necessary or
desirable to confirm that all the rights, powers, trusts and duties of the
retiring Trustee with respect to the Debt Securities as to which the predecessor
Trustee is not retiring shall continue to be vested in the predecessor Trustee,
and shall add to or change any of the provisions of this Indenture as shall be
necessary to provide for or facilitate the administration of the Trust hereunder
by more than one Trustee, it being understood that nothing herein or in such
supplemental indenture shall constitute such Trustees co-trustees of the same
trust and that each such Trustee shall be Trustee of a trust or trusts hereunder
separate and apart from any trust or trusts hereunder administered by any other
such Trustee.

          No successor Trustee shall accept appointment as provided in this
Section 6.10 unless at the time of such acceptance such successor Trustee shall
be eligible under the provisions of Section 6.08.

          In no event shall a retiring Trustee be liable for the acts or
omissions of any successor Trustee hereunder.

          Upon acceptance of appointment by a successor Trustee as provided in
this Section 6.10, the Company shall mail notice of the succession of such
Trustee hereunder to the holders of Debt Securities at their addresses as they
shall appear on the Debt Security Register.  If the Company fails to mail such
notice within ten Business Days after the acceptance of appointment by the
successor Trustee, the successor Trustee shall cause such notice to be mailed at
the expense of the Company.

     SECTION 6.11.  Succession by Merger, etc.

          Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any
corporation succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder without
the execution or filing of any paper or any further act on the part of any of
the parties hereto; provided, that such corporation shall be otherwise eligible
                    --------
and qualified under this Article.

          In case at the time such successor to the Trustee shall succeed to the
trusts created by this Indenture any of the Debt Securities shall have been
authenticated but not delivered, any such successor to the Trustee may adopt the
certificate of authentication of any predecessor Trustee, and deliver such Debt
Securities so authenticated; and in case at that time any of the

                                       38
<PAGE>

Debt Securities shall not have been authenticated, any successor to the Trustee
may authenticate such Debt Securities either in the name of any predecessor
hereunder or in the name of the successor Trustee; and in all such cases such
certificates shall have the full force which it is anywhere in the Debt
Securities or in this Indenture provided that the certificate of the Trustee
shall have; provided, however, that the right to adopt the certificate of
            --------  -------
authentication of any predecessor Trustee or authenticate Debt Securities in the
name of any predecessor Trustee shall apply only to its successor or successors
by merger, conversion or consolidation.

     SECTION 6.12.  Authenticating Agents.

          There may be one or more Authenticating Agents appointed by the
Trustee upon the request of the Company with power to act on its behalf and
subject to its direction in the authentication and delivery of Debt Securities
issued upon exchange or registration of transfer thereof as fully to all intents
and purposes as though any such Authenticating Agent had been expressly
authorized to authenticate and deliver Debt Securities; provided that the
Trustee shall have no liability to the Company for any acts or omissions of the
Authenticating Agent with respect to the authentication and delivery of Debt
Securities.  Any such Authenticating Agent shall at all times be a corporation
organized and doing business under the laws of the United States or of any state
or territory thereof or of the District of Columbia authorized under such laws
to act as Authenticating Agent, having a combined capital and surplus of at
least $50,000,000 and being subject to supervision or examination by federal,
state, territorial or District of Columbia authority.  If such corporation
publishes reports of condition at least annually pursuant to law or the
requirements of such authority, then for the purposes of this Section 6.12 the
combined capital and surplus of such corporation shall be deemed to be its
combined capital and surplus as set forth in its most recent report of condition
so published.  If at any time an Authenticating Agent shall cease to be eligible
in accordance with the provisions of this Section, it shall resign immediately
in the manner and with the effect herein specified in this Section.

          Any corporation into which any Authenticating Agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, consolidation or conversion to which any Authenticating Agent
shall be a party, or any corporation succeeding to all or substantially all of
the corporate trust business of any Authenticating Agent, shall be the successor
of such Authenticating Agent hereunder, if such successor corporation is
otherwise eligible under this Section 6.12 without the execution or filing of
any paper or any further act on the part of the parties hereto or such
Authenticating Agent.

          Any Authenticating Agent may at any time resign by giving written
notice of resignation to the Trustee and to the Company.  The Trustee may at any
time terminate the agency of any Authenticating Agent with respect to the Debt
Securities by giving written notice of termination to such Authenticating Agent
and to the Company.  Upon receiving such a notice of resignation or upon such a
termination, or in case at any time any Authenticating Agent shall cease to be
eligible under this Section 6.12, the Trustee may, and upon the request of the
Company shall, promptly appoint a successor Authenticating Agent eligible under
this Section 6.12, shall give written notice of such appointment to the Company
and shall mail notice of such appointment to all holders of Debt Securities as
the names and addresses of such holders appear on the Debt Security Register.
Any successor Authenticating Agent upon acceptance of its

                                       39
<PAGE>

appointment hereunder shall become vested with all rights, powers, duties and
responsibilities with respect to the Debt Securities of its predecessor
hereunder, with like effect as if originally named as Authenticating Agent
herein.

          The Company agrees to pay to any Authenticating Agent from time to
time reasonable compensation for its services.  Any Authenticating Agent shall
have no responsibility or liability for any action taken by it as such in
accordance with the directions of the Trustee.

                                  ARTICLE VII

                        CONCERNING THE SECURITYHOLDERS

     SECTION 7.01.  Action by Securityholders.

          Whenever in this Indenture it is provided that the holders of a
specified percentage in aggregate principal amount of the Debt Securities may
take any action (including the making of any demand or request, the giving of
any notice, consent or waiver or the taking of any other action), the fact that
at the time of taking any such action the holders of such specified percentage
have joined therein may be evidenced (a) by any instrument or any number of
instruments of similar tenor executed by such Securityholders in person or by
agent or proxy appointed in writing, or (b) by the record of such holders of
Debt Securities voting in favor thereof at any meeting of such Securityholders
duly called and held in accordance with the provisions of Article VIII, or (c)
by a combination of such instrument or instruments and any such record of such a
meeting of such Securityholders or (d) by any other method the Trustee deems
satisfactory.

          If the Company shall solicit from the Securityholders any request,
demand, authorization, direction, notice, consent, waiver or other action or
revocation of the same, the Company may, at its option, as evidenced by an
Officers' Certificate, fix in advance a record date for such Debt Securities for
the determination of Securityholders entitled to give such request, demand,
authorization, direction, notice, consent, waiver or other action or revocation
of the same, but the Company shall have no obligation to do so.  If such a
record date is fixed, such request, demand, authorization, direction, notice,
consent, waiver or other action or revocation of the same may be given before or
after the record date, but only the Securityholders of record at the close of
business on the record date shall be deemed to be Securityholders for the
purposes of determining whether Securityholders of the requisite proportion of
outstanding Debt Securities have authorized or agreed or consented to such
request, demand, authorization, direction, notice, consent, waiver or other
action or revocation of the same, and for that purpose the outstanding Debt
Securities shall be computed as of the record date; provided, however, that no
                                                    --------  -------
such authorization, agreement or consent by such Securityholders on the record
date shall be deemed effective unless it shall become effective pursuant to the
provisions of this Indenture not later than six months after the record date.

     SECTION 7.02.  Proof of Execution by Securityholders.

          Subject to the provisions of Sections 6.01, 6.02 and 8.05, proof of
the execution of any instrument by a Securityholder or his agent or proxy shall
be sufficient if made in accordance with such reasonable rules and regulations
as may be prescribed by the Trustee or in

                                       40
<PAGE>

such manner as shall be satisfactory to the Trustee. The ownership of Debt
Securities shall be proved by the Debt Security Register or by a certificate of
the Debt Security registrar. The Trustee may require such additional proof of
any matter referred to in this Section as it shall deem necessary.

          The record of any Securityholders' meeting shall be proved in the
manner provided in Section 8.06.

     SECTION 7.03.  Who Are Deemed Absolute Owners.

          Prior to due presentment for registration of transfer of any Debt
Security, the Company, the Trustee, any Authenticating Agent, any paying agent,
any transfer agent and any Debt Security registrar may deem the Person in whose
name such Debt Security shall be registered upon the Debt Security Register to
be, and may treat him as, the absolute owner of such Debt Security (whether or
not such Debt Security shall be overdue) for the purpose of receiving payment of
or on account of the principal of, premium, if any, and interest on such Debt
Security and for all other purposes; and neither the Company nor the Trustee nor
any Authenticating Agent nor any paying agent nor any transfer agent nor any
Debt Security registrar shall be affected by any notice to the contrary.  All
such payments so made to any holder for the time being or upon his order shall
be valid, and, to the extent of the sum or sums so paid, effectual to satisfy
and discharge the liability for moneys payable upon any such Debt Security.

     SECTION 7.04.  Debt Securities Owned by Company Deemed Not Outstanding.

          In determining whether the holders of the requisite aggregate
principal amount of Debt Securities have concurred in any direction, consent or
waiver under this Indenture, Debt Securities which are owned by the Company or
any other obligor on the Debt Securities or by any Person directly or indirectly
controlling or controlled by or under direct or indirect common control with the
Company or any other obligor on the Debt Securities shall be disregarded and
deemed not to be outstanding for the purpose of any such determination;
provided, that for the purposes of determining whether the Trustee shall be
--------
protected in relying on any such direction, consent or waiver, only Debt
Securities which a Responsible Officer of the Trustee actually knows are so
owned shall be so disregarded.  Debt Securities so owned which have been pledged
in good faith may be regarded as outstanding for the purposes of this Section
7.04 if the pledgee shall establish to the satisfaction of the Trustee the
pledgee's right to vote such Debt Securities and that the pledgee is not the
Company or any such other obligor or Person directly or indirectly controlling
or controlled by or under direct or indirect common control with the Company or
any such other obligor.  In the case of a dispute as to such right, any decision
by the Trustee taken upon the advice of counsel shall be full protection to the
Trustee.

     SECTION 7.05.  Revocation of Consents; Future Holders Bound.

          At any time prior to (but not after) the evidencing to the Trustee, as
provided in Section 7.01, of the taking of any action by the holders of the
percentage in aggregate principal amount of the Debt Securities specified in
this Indenture in connection with such action, any holder (in cases where no
record date has been set pursuant to Section 7.01) or any holder as of an
applicable record date (in cases where a record date has been set pursuant to
Section 7.01) of

                                       41
<PAGE>

a Debt Security (or any Debt Security issued in whole or in part in exchange or
substitution therefor) the serial number of which is shown by the evidence to be
included in the Debt Securities the holders of which have consented to such
action may, by filing written notice with the Trustee at the Principal Office of
the Trustee and upon proof of holding as provided in Section 7.02, revoke such
action so far as concerns such Debt Security (or so far as concerns the
principal amount represented by any exchanged or substituted Debt Security).
Except as aforesaid any such action taken by the holder of any Debt Security
shall be conclusive and binding upon such holder and upon all future holders and
owners of such Debt Security, and of any Debt Security issued in exchange or
substitution therefor or on registration of transfer thereof, irrespective of
whether or not any notation in regard thereto is made upon such Debt Security or
any Debt Security issued in exchange or substitution therefor.

                                 ARTICLE VIII

                           SECURITYHOLDERS' MEETINGS

     SECTION 8.01.  Purposes of Meetings.

          A meeting of Securityholders may be called at any time and from time
to time pursuant to the provisions of this Article VIII for any of the following
purposes:

          (a) to give any notice to the Company or to the Trustee, or to give
any directions to the Trustee, or to consent to the waiving of any default
hereunder and its consequences, or to take any other action authorized to be
taken by Securityholders pursuant to any of the provisions of Article V;

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

          (c) to consent to the execution of an indenture or indentures
supplemental hereto pursuant to the provisions of Section 9.02; or

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

     SECTION 8.02.  Call of Meetings by Trustee.

          The Trustee may at any time call a meeting of Securityholders to take
any action specified in Section 8.01, to be held at such time and at such place
in New York, as the Trustee shall determine.  Notice of every meeting of the
Securityholders, setting forth the time and the place of such meeting and in
general terms the action proposed to be taken at such meeting, shall be mailed
to holders of Debt Securities affected at their addresses as they shall appear
on the Debt Securities Register.  Such notice shall be mailed not less than 20
nor more than 180 days prior to the date fixed for the meeting.

                                       42
<PAGE>

     SECTION 8.03.  Call of Meetings by Company or Securityholders.

          In case at any time the Company pursuant to a Board Resolution, or the
holders of at least 10% in aggregate principal amount of the Debt Securities, as
the case may be, then outstanding, shall have requested the Trustee to call a
meeting of Securityholders, by written request setting forth in reasonable
detail the action proposed to be taken at the meeting, and the Trustee shall not
have mailed the notice of such meeting within 20 days after receipt of such
request, then the Company or such Securityholders may determine the time and the
place in Palo Alto, Menlo Park or San Francisco, California for such meeting and
may call such meeting to take any action authorized in Section 8.01, by mailing
notice thereof as provided in Section 8.02.

     SECTION 8.04.  Qualifications for Voting.

          To be entitled to vote at any meeting of Securityholders a Person
shall (a) be a holder of one or more Debt Securities with respect to which the
meeting is being held or (b) a Person appointed by an instrument in writing as
proxy by a holder of one or more such Debt Securities.  The only Persons who
shall be entitled to be present or to speak at any meeting of Securityholders
shall be the Persons entitled to vote at such meeting and their counsel and any
representatives of the Trustee and its counsel and any representatives of the
Company and its counsel.

     SECTION 8.05.  Regulations.
                    -----------

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

          The Trustee shall, by an instrument in writing, appoint a temporary
chairman of the meeting, unless the meeting shall have been called by the
Company or by Securityholders as provided in Section 8.03, in which case the
Company or the Securityholders calling the meeting, as the case may be, shall in
like manner appoint a temporary chairman. A permanent chairman and a permanent
secretary of the meeting shall be elected by majority vote of the meeting.

          Subject to the provisions of Section 7.04, at any meeting each holder
of Debt Securities with respect to which such meeting is being held or proxy
therefor shall be entitled to one vote for each $1,000 principal amount of Debt
Securities held or represented by him; provided, however, that no vote shall be
                                       --------  -------
cast or counted at any meeting in respect of any Debt Security challenged as not
outstanding and ruled by the chairman of the meeting to be not outstanding.  The
chairman of the meeting shall have no right to vote other than by virtue of Debt
Securities held by him or instruments in writing as aforesaid duly designating
him as the Person to vote on behalf of other Securityholders.  Any meeting of
Securityholders duly called pursuant to the provisions of Section 8.02 or 8.03
may be adjourned from time to time by a majority of those present, whether or
not constituting a quorum, and the meeting may be held as so adjourned without
further notice.

                                       43
<PAGE>

     SECTION 8.06.  Voting.
                    ------

          The vote upon any resolution submitted to any meeting of holders of
Debt Securities with respect to which such meeting is being held shall be by
written ballots on which shall be subscribed the signatures of such holders or
of their representatives by proxy and the serial number or numbers of the Debt
Securities held or represented by them.  The permanent chairman of the meeting
shall appoint two inspectors of votes who shall count all votes cast at the
meeting for or against any resolution and who shall make and file with the
secretary of the meeting their verified written reports in triplicate of all
votes cast at the meeting. A record in duplicate of the proceedings of each
meeting of Securityholders shall be prepared by the secretary of the meeting and
there shall be attached to said record the original reports of the inspectors of
votes on any vote by ballot taken thereat and affidavits by one or more Persons
having knowledge of the facts setting forth a copy of the notice of the meeting
and showing that said notice was mailed as provided in Section 8.02.  The record
shall show the serial numbers of the Debt Securities voting in favor of or
against any resolution. The record shall be signed and verified by the
affidavits of the permanent chairman and secretary of the meeting and one of the
duplicates shall be delivered to the Company and the other to the Trustee to be
preserved by the Trustee, the latter to have attached thereto the ballots voted
at the meeting.

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

     SECTION 8.07.  Quorum; Actions.
                    ---------------

          The Persons entitled to vote a majority in principal amount of the
Debt Securities shall constitute a quorum for a meeting of Securityholders;
provided, however, that if any action is to be taken at such meeting with
--------  -------
respect to a consent, waiver, request, demand, notice, authorization, direction
or other action which may be given by the holders of not less than a specified
percentage in principal amount of the Debt Securities, the Persons holding or
representing such specified percentage in principal amount of the Debt
Securities will constitute a quorum.  In the absence of a quorum within 30
minutes of the time appointed for any such meeting, the meeting shall, if
convened at the request of Securityholders, be dissolved.  In any other case the
meeting may be adjourned for a period of not less than 10 days as determined by
the permanent chairman of the meeting prior to the adjournment of such meeting.
In the absence of a quorum at any such adjourned meeting, such adjourned meeting
may be further adjourned for a period of not less than 10 days as determined by
the permanent chairman of the meeting prior to the adjournment of such adjourned
meeting.  Notice of the reconvening of any adjourned meeting shall be given as
provided in Section 8.02, except that such notice need be given only once not
less than five days prior to the date on which the meeting is scheduled to be
reconvened.  Notice of the reconvening of an adjourned meeting shall state
expressly the percentage, as provided above, of the principal amount of the Debt
Securities which shall constitute a quorum.

          Except as limited by the proviso in the first paragraph of Section
9.02, any resolution presented to a meeting or adjourned meeting duly reconvened
at which a quorum is present as aforesaid may be adopted by the affirmative vote
of the holders of a majority in principal amount of the Debt Securities;
provided, however, that, except as limited
--------  -------

                                       44
<PAGE>

by the proviso in the first paragraph of Section 9.02, any resolution with
respect to any consent, waiver, request, demand, notice, authorization,
direction or other action that this Indenture expressly provides may be given by
the holders of not less than a specified percentage in principal amount of the
Debt Securities may be adopted at a meeting or an adjourned meeting duly
reconvened and at which a quorum is present as aforesaid only by the affirmative
vote of the holders of a not less than such specified percentage in principal
amount of the Debt Securities.

          Any resolution passed or decision taken at any meeting of holders of
Debt Securities duly held in accordance with this Section shall be binding on
all the Securityholders, whether or not present or represented at the meeting.

                                   ARTICLE IX

                            SUPPLEMENTAL INDENTURES

     SECTION 9.01.  Supplemental Indentures without Consent of Securityholders.

          The Company, when authorized by a Board Resolution, and the Trustee
may from time to time and at any time enter into an indenture or indentures
supplemental hereto, without the consent of the Securityholders, for one or more
of the following purposes:

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

          (b) to add to the covenants of the Company such further covenants,
restrictions or conditions for the protection of the holders of Debt Securities
as the Board of Directors shall consider to be for the protection of the holders
of such Debt Securities, and to make the occurrence, or the occurrence and
continuance, of a default in any of such additional covenants, restrictions or
conditions a default or an Event of Default permitting the enforcement of all or
any of the several remedies provided in this Indenture as herein set forth;
provided, however, that in respect of any such additional covenant, restriction
--------  -------
or condition such supplemental indenture may provide for a particular period of
grace after default (which period may be shorter or longer than that allowed in
the case of other defaults) or may provide for an immediate enforcement upon
such default or may limit the remedies available to the Trustee upon such
default;

          (c) to cure any ambiguity or to correct or supplement any provision
contained herein or in any supplemental indenture which may be defective or
inconsistent with any other provision contained herein or in any supplemental
indenture, or to make such other provisions in regard to matters or questions
arising under this Indenture; provided that any such action shall not adversely
affect the interests of the holders of the Debt Securities;

          (d) to add to, delete from, or revise the terms of Debt Securities,
including, without limitation, any terms relating to the issuance, exchange,
registration or transfer of Debt Securities, including to provide for transfer
procedures and restrictions substantially similar to those applicable to the
Capital Securities as required by Section 2.05 (for purposes of assuring that no
registration of Debt Securities is required under the Securities Act of 1933, as
amended);

                                       45
<PAGE>

provided that any such action shall not adversely affect the interests of the
holders of the Debt Securities then outstanding (it being understood, for
purposes of this proviso, that transfer restrictions on Debt Securities
substantially similar to those that were applicable to Capital Securities shall
not be deemed to adversely affect the holders of the Debt Securities);

          (e) to evidence and provide for the acceptance of appointment
hereunder by a successor Trustee with respect to the Debt Securities and to add
to or change any of the provisions of this Indenture as shall be necessary to
provide for or facilitate the administration of the trusts hereunder by more
than one Trustee, pursuant to the requirements of Section 6.10;

          (f) to make any change (other than as elsewhere provided in this
paragraph) that does not adversely affect the rights of any Securityholder in
any material respect; or

          (g) to provide for the issuance of and establish the form and terms
and conditions of the Debt Securities, to establish the form of any
certifications required to be furnished pursuant to the terms of this Indenture
or the Debt Securities, or to add to the rights of the holders of Debt
Securities.

          The Trustee is hereby authorized to join with the Company in the
execution of any such supplemental indenture, to make any further appropriate
agreements and stipulations which may be therein contained and to accept the
conveyance, transfer and assignment of any property thereunder, but the Trustee
shall not be obligated to, but may in its discretion, enter into any such
supplemental indenture which affects the Trustee's own rights, duties or
immunities under this Indenture or otherwise.

          Any supplemental indenture authorized by the provisions of this
Section 9.01 may be executed by the Company and the Trustee without the consent
of the holders of any of the Debt Securities at the time outstanding,
notwithstanding any of the provisions of Section 9.02.

     SECTION 9.02.  Supplemental Indentures with Consent of Securityholders.

          With the consent (evidenced as provided in Section 7.01) of the
holders of not less than a majority in aggregate principal amount of the Debt
Securities at the time outstanding affected by such supplemental indenture
(voting as a class), the Company, when authorized by a Board Resolution, and the
Trustee may from time to time and at any time enter into an indenture or
indentures supplemental hereto (which shall conform to the provisions of the
Trust Indenture Act, then in effect, applicable to indentures qualified
thereunder) for the purpose of adding any provisions to or changing in any
manner or eliminating any of the provisions of this Indenture or of any
supplemental indenture or of modifying in any manner the rights of the holders
of the Debt Securities; provided, however, that no such supplemental indenture
                        --------  -------
shall without the consent of the holders of each Debt Security then outstanding
and affected thereby (i) extend the fixed maturity of any Debt Security, or
reduce the principal amount thereof or any premium thereon, or reduce the rate
or extend the time of payment of interest thereon, or reduce any amount payable
on redemption thereof or make the principal thereof or any interest or premium
thereon payable in any coin or currency other than that provided in the Debt
Securities, or impair or affect the right of any Securityholder to institute
suit for payment thereof or impair the right of repayment, if any, at the option
of the holder, or (ii) reduce the aforesaid percentage of Debt

                                       46
<PAGE>

Securities the holders of which are required to consent to any such supplemental
indenture; and provided, further, that if the Debt Securities are held by the
               --------  -------
Trust or a trustee of such trust, such supplemental indenture shall not be
effective until the holders of a majority in liquidation preference of Trust
Securities shall have consented to such supplemental indenture; provided
further, that if the consent of the Securityholder of each outstanding Debt
Security is required, such supplemental indenture shall not be effective until
each holder of the Trust Securities shall have consented to such supplemental
indenture.

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

          Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to the provisions of this Section, the Trustee
shall transmit by mail, first class postage prepaid, a notice, prepared by the
Company, setting forth in general terms the substance of such supplemental
indenture, to the Securityholders thereby as their names and addresses appear
upon the Debt Security Register.  Any failure of the Trustee to mail such
notice, or any defect therein, shall not, however, in any way impair or affect
the validity of any such supplemental indenture.

          It shall not be necessary for the consent of the Securityholders under
this Section 9.02 to approve the particular form of any proposed supplemental
indenture, but it shall be sufficient if such consent shall approve the
substance thereof.

     SECTION 9.03.  Effect of Supplemental Indentures.

          Upon the execution of any supplemental indenture pursuant to the
provisions of this Article IX, this Indenture shall be and be deemed to be
modified and amended in accordance therewith and the respective rights,
limitations of rights, obligations, duties and immunities under this Indenture
of the Trustee, the Company and the holders of Debt Securities shall thereafter
be determined, exercised and enforced hereunder subject in all respects to such
modifications and amendments and all the terms and conditions of any such
supplemental indenture shall be and be deemed to be part of the terms and
conditions of this Indenture for any and all purposes.

     SECTION 9.04.  Notation on Debt Securities.

          Debt Securities authenticated and delivered after the execution of any
supplemental indenture pursuant to the provisions of this Article IX may bear a
notation as to any matter provided for in such supplemental indenture.  If the
Company or the Trustee shall so determine, new Debt Securities so modified as to
conform, in the opinion of the Board of Directors of the Company, to any
modification of this Indenture contained in any such supplemental indenture may
be prepared and executed by the Company, authenticated by the

                                       47
<PAGE>

Trustee or the Authenticating Agent and delivered in exchange for the Debt
Securities then outstanding.

     SECTION 9.05.  Evidence of Compliance of Supplemental Indenture to be
Furnished to Trustee.

          The Trustee, subject to the provisions of Sections 6.01 and 6.02,
shall, in addition to the documents required by Section 14.06, receive an
Officers' Certificate and an Opinion of Counsel as conclusive evidence that any
supplemental indenture executed pursuant hereto complies with the requirements
of this Article IX.  The Trustee shall receive an Opinion of Counsel as
conclusive evidence that any supplemental indenture executed pursuant to this
Article IX is authorized or permitted by, and conforms to, the terms of this
Article IX and that it is proper for the Trustee under the provisions of this
Article IX to join in the execution thereof.

                                   ARTICLE X

                            REDEMPTION OF SECURITIES

     SECTION 10.01.  Optional Redemption.

          At any time the Company shall have the right, subject to the receipt
by the Company of prior approval from the Federal Reserve, if then required
under applicable capital guidelines or policies of the Federal Reserve, to
redeem the Debt Securities, in whole or in part, on any January 25 or July 25 on
or after July 25, 2006 (the "Redemption Date"), at the Redemption Price.

     SECTION 10.02.  Special Event Redemption.

          If a Special Event shall occur and be continuing, the Company shall
have the right, subject to the receipt by the Company of prior approval from the
Federal Reserve if then required under applicable capital guidelines or policies
of the Federal Reserve, to redeem the Debt Securities, in whole but not in part,
at any time within 90 days following the occurrence of such Special Event (the
"Special Redemption Date"), at the Special Redemption Price.

     SECTION 10.03.  Notice of Redemption; Selection of Debt Securities.

          In case the Company shall desire to exercise the right to redeem all,
or, as the case may be, any part of the Debt Securities, it shall fix a date for
redemption and shall mail a notice of such redemption at least 30 and not more
than 60 days prior to the date fixed for redemption to the holders of Debt
Securities so to be redeemed as a whole or in part at their last addresses as
the same appear on the Debt Security Register.  Such mailing shall be by first
class mail.  The notice if mailed in the manner herein provided shall be
conclusively presumed to have been duly given, whether or not the holder
receives such notice.  In any case, failure to give such notice by mail or any
defect in the notice to the holder of any Debt Security designated for
redemption as a whole or in part shall not affect the validity of the
proceedings for the redemption of any other Debt Security.

                                       48
<PAGE>

          Each such notice of redemption shall specify the CUSIP number, if any,
of the Debt Securities to be redeemed, the date fixed for redemption, the
redemption price at which Debt Securities are to be redeemed, the place or
places of payment, that payment will be made upon presentation and surrender of
such Debt Securities, that interest accrued to the date fixed for redemption
will be paid as specified in said notice, and that on and after said date
interest thereon or on the portions thereof to be redeemed will cease to accrue.
If less than all the Debt Securities are to be redeemed the notice of redemption
shall specify the numbers of the Debt Securities to be redeemed.  In case the
Debt Securities are to be redeemed in part only, the notice of redemption shall
state the portion of the principal amount thereof to be redeemed and shall state
that on and after the date fixed for redemption, upon surrender of such Debt
Security, a new Debt Security or Debt Securities in principal amount equal to
the unredeemed portion thereof will be issued.

          Prior to 10:00 a.m. New York City time on the Redemption Date or the
Special Redemption Date specified in the notice of redemption given as provided
in this Section, the Company will deposit with the Trustee or with one or more
paying agents an amount of money sufficient to redeem on the redemption date all
the Debt Securities so called for redemption at the appropriate redemption
price, together with accrued interest to the date fixed for redemption.

          The Company will give the Trustee notice not less than 45 nor more
than 60 days prior to the redemption date as to the aggregate principal amount
of Debt Securities to be redeemed and the Trustee shall select, in such manner
as in its sole discretion it shall deem appropriate and fair, the Debt
Securities or portions thereof (in integral multiples of $1,000) to be redeemed.

     SECTION 10.04.  Payment of Debt Securities Called for Redemption.

          If notice of redemption has been given as provided in Section 10.03,
the Debt Securities or portions of Debt Securities with respect to which such
notice has been given shall become due and payable on the Redemption Date or the
Special Redemption Date (as the case may be) and at the place or places stated
in such notice at the applicable redemption price, together with interest
accrued to the date fixed for redemption, and on and after said Redemption Date
or the Special Redemption Date (unless the Company shall default in the payment
of such Debt Securities at the redemption price, together with interest accrued
to said date) interest on the Debt Securities or portions of Debt Securities so
called for redemption shall cease to accrue.  On presentation and surrender of
such Debt Securities at a place of payment specified in said notice, such Debt
Securities or the specified portions thereof shall be paid and redeemed by the
Company at the applicable redemption price, together with interest accrued
thereon to the Redemption Date or the Special Redemption Date (as the case may
be).

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

                                       49
<PAGE>

                                   ARTICLE XI

               CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE

     SECTION 11.01.  Company May Consolidate, etc., on Certain Terms.

          Nothing contained in this Indenture or in the Debt Securities shall
prevent any consolidation or merger of the Company with or into any other
corporation or corporations (whether or not affiliated with the Company) or
successive consolidations or mergers in which the Company or its successor or
successors shall be a party or parties, or shall prevent any sale, conveyance,
transfer or other disposition of the property or capital stock of the Company or
its successor or successors as an entirety, or substantially as an entirety, to
any other corporation (whether or not affiliated with the Company, or its
successor or successors) authorized to acquire and operate the same; provided,
                                                                     --------
however, that the Company hereby covenants and agrees that, upon any such
-------
consolidation, merger (where the Company is not the surviving corporation),
sale, conveyance, transfer or other disposition, the due and punctual payment of
the principal of (and premium, if any) and interest on all of the Debt
Securities in accordance with their terms, according to their tenor, and the due
and punctual performance and observance of all the covenants and conditions of
this Indenture to be kept or performed by the Company, shall be expressly
assumed by supplemental indenture satisfactory in form to the Trustee executed
and delivered to the Trustee by the entity formed by such consolidation, or into
which the Company shall have been merged, or by the entity which shall have
acquired such property or capital stock.

     SECTION 11.02.  Successor Entity to be Substituted.

          In case of any such consolidation, merger, sale, conveyance, transfer
or other disposition and upon the assumption by the successor entity, by
supplemental indenture, executed and delivered to the Trustee and satisfactory
in form to the Trustee, of the due and punctual payment of the principal of and
premium, if any, and interest on all of the Debt Securities and the due and
punctual performance and observance of all of the covenants and conditions of
this Indenture to be performed or observed by the Company, such successor entity
shall succeed to and be substituted for the Company, with the same effect as if
it had been named herein as the Company, and thereupon the predecessor entity
shall be relieved of any further liability or obligation hereunder or upon the
Debt Securities.  Such successor entity thereupon may cause to be signed, and
may issue either in its own name or in the name of the Company, any or all of
the Debt Securities issuable hereunder which theretofore shall not have been
signed by the Company and delivered to the Trustee or the Authenticating Agent;
and, upon the order of such successor entity instead of the Company and subject
to all the terms, conditions and limitations in this Indenture prescribed, the
Trustee or the Authenticating Agent shall authenticate and deliver any Debt
Securities which previously shall have been signed and delivered by the officers
of the Company, to the Trustee or the Authenticating Agent for authentication,
and any Debt Securities which such successor entity thereafter shall cause to be
signed and delivered to the Trustee or the Authenticating Agent for that
purpose.  All the Debt Securities so issued shall in all respects have the same
legal rank and benefit under this Indenture as the Debt Securities theretofore
or thereafter issued in accordance with the terms of this Indenture as though
all of such Debt Securities had been issued at the date of the execution hereof.

                                       50
<PAGE>

     SECTION 11.03.  Opinion of Counsel to be Given to Trustee.

          The Trustee, subject to the provisions of Sections 6.01 and 6.02,
shall receive, in addition to the Opinion of Counsel required by Section 9.05,
an Opinion of Counsel as conclusive evidence that any consolidation, merger,
sale, conveyance,  transfer or other disposition, and any assumption, permitted
or required by the terms of this Article XI complies with the provisions of this
Article XI.

                                  ARTICLE XII

                    SATISFACTION AND DISCHARGE OF INDENTURE

     SECTION 12.01.  Discharge of Indenture.

          When (a) the Company shall deliver to the Trustee for cancellation all
Debt Securities theretofore authenticated (other than any Debt Securities which
shall have been destroyed, lost or stolen and which shall have been replaced or
paid as provided in Section 2.06) and not theretofore canceled, or (b) all the
Debt Securities not theretofore canceled or delivered to the Trustee for
cancellation shall have become due and payable, or are by their terms to become
due and payable within one year or are to be called for redemption within one
year under arrangements satisfactory to the Trustee for the giving of notice of
redemption, and the Company shall deposit with the Trustee, in trust, funds,
which shall be immediately due and payable, sufficient to pay at maturity or
upon redemption all of the Debt Securities (other than any Debt Securities which
shall have been destroyed, lost or stolen and which shall have been replaced or
paid as provided in Section 2.06) not theretofore canceled or delivered to the
Trustee for cancellation, including principal and premium, if any, and interest
due or to become due to such date of maturity or redemption date, as the case
may be, but excluding, however, the amount of any moneys for the payment of
principal of, and premium, if any, or interest on the Debt Securities (1)
theretofore repaid to the Company in accordance with the provisions of Section
12.04, or (2) paid to any state or to the District of Columbia pursuant to its
unclaimed property or similar laws, and if in the case of either clause (a) or
clause (b) the Company shall also pay or cause to be paid all other sums payable
hereunder by the Company, then this Indenture shall cease to be of further
effect except for the provisions of Sections 2.05, 2.06, 2.08, 3.01, 3.02, 3.04,
6.06, 6.09 and 12.04 hereof shall survive until such Debt Securities shall
mature or are redeemed, as the case may be, and are paid.  Thereafter, Sections
6.09 and 12.04 shall survive, and the Trustee, on demand of the Company
accompanied by an Officers' Certificate and an Opinion of Counsel, each stating
that all conditions precedent herein provided for relating to the satisfaction
and discharge of this Indenture have been complied with, and at the cost and
expense of the Company, shall execute proper instruments acknowledging
satisfaction of and discharging this Indenture, the Company, however, hereby
agreeing to reimburse the Trustee for any costs or expenses thereafter
reasonably and properly incurred by the Trustee in connection with this
Indenture or the Debt Securities.

                                       51
<PAGE>

     SECTION 12.02.  Deposited Moneys to be Held in Trust by Trustee.

          Subject to the provisions of Section 12.04, all moneys deposited with
the Trustee pursuant to Section 12.01 shall be held in trust and applied by it
to the payment, either directly or through any paying agent (including the
Company if acting as its own paying agent), to the holders of the particular
Debt Securities for the payment of which such moneys have been deposited with
the Trustee, of all sums due and to become due thereon for principal, and
premium, if any, and interest.

     SECTION 12.03.  Paying Agent to Repay Moneys Held.

          Upon the satisfaction and discharge of this Indenture, all moneys then
held by any paying agent of the Debt Securities (other than the Trustee) shall,
upon demand of the Company, be repaid to it or paid to the Trustee, and
thereupon such paying agent shall be released from all further liability with
respect to such moneys.

     SECTION 12.04.  Return of Unclaimed Moneys.

          Any moneys deposited with or paid to the Trustee or any paying agent
for payment of the principal of, and premium, if any, or interest on Debt
Securities and not applied but remaining unclaimed by the holders of Debt
Securities for two years after the date upon which the principal of, and
premium, if any, or interest on such Debt Securities, as the case may be, shall
have become due and payable, shall be repaid to the Company by the Trustee or
such paying agent on written demand; and the holder of any of the Debt
Securities shall thereafter look only to the Company for any payment which such
holder may be entitled to collect and all liability of the Trustee or such
paying agent with respect to such moneys shall thereupon cease.

                                  ARTICLE XIII

                    IMMUNITY OF INCORPORATORS, STOCKHOLDERS,
                             OFFICERS AND DIRECTORS

     SECTION 13.01.  Indenture and Debt Securities Solely Corporate Obligations.

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

                                       52
<PAGE>

                                  ARTICLE XIV

                            MISCELLANEOUS PROVISIONS

     SECTION 14.01.  Successors.
                     ----------

          All the covenants, stipulations, promises and agreements of the
Company contained in this Indenture shall bind its successors and assigns
whether so expressed or not.

     SECTION 14.02.  Official Acts by Successor Entity.

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

     SECTION 14.03.  Surrender of Company Powers.

          The Company by instrument in writing executed by authority of 2/3
(two-thirds) of its Board of Directors and delivered to the Trustee may
surrender any of the powers reserved to the Company and thereupon such power so
surrendered shall terminate both as to the Company, and as to any permitted
successor.

     SECTION 14.04.  Addresses for Notices, etc.

          Any notice or demand which by any provision of this Indenture is
required or permitted to be given or served by the Trustee or by the
Securityholders on the Company may be given or served in writing by being
deposited postage prepaid by registered or certified mail in a post office
letter box addressed (until another address is filed by the Company, with the
Trustee for the purpose) to the Company at 400 Emerson Street, Third Floor, Palo
Alto, California 94301, Attention: Linda M. Iannone.  Any notice, direction,
request or demand by any Securityholder or the Company to or upon the Trustee
shall be deemed to have been sufficiently given or made, for all purposes, if
given or made in writing at the office of the Trustee, addressed to the Trustee,
101 Barclay Street, Floor 21W, New York, NY 10286 Attention: Corporate Trust
Administration.

     SECTION 14.05.  Governing Law.
                     -------------

          This Indenture and each Debt Security shall be deemed to be a contract
made under the law of the State of New York, and for all purposes shall be
governed by and construed in accordance with the law of said State, without
regard to conflict of laws principles thereof.

     SECTION 14.06.  Evidence of Compliance with Conditions Precedent.

          Upon any application or demand by the Company to the Trustee to take
any action under any of the provisions of this Indenture, the Company shall
furnish to the Trustee an Officers' Certificate stating that in the opinion of
the signers all conditions precedent, if any, provided for in this Indenture
relating to the proposed action have been complied with and an

                                       53
<PAGE>

Opinion of Counsel stating that, in the opinion of such counsel, all such
conditions precedent have been complied with.

          Each certificate or opinion provided for in this Indenture and
delivered to the Trustee with respect to compliance with a condition or covenant
provided for in this Indenture (except certificates delivered pursuant to
Section 3.05) shall include (a) a statement that the person making such
certificate or opinion has read such covenant or condition; (b) 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; (c) a statement that, in the opinion of such person, he has made such
examination or investigation as is necessary to enable him to express an
informed opinion as to whether or not such covenant or condition has been
complied with; and (d) a statement as to whether or not, in the opinion of such
person, such condition or covenant has been complied with.

     SECTION 14.07.  Non-Business Days.
                     -----------------

          In any case where the date of payment of interest on or principal of
the Debt Securities is not a Business Day, the payment of such interest on or
principal of the Debt Securities need not be made on such date but may be made
on the next succeeding Business Day, with the same force and effect as if made
on the date of payment and no interest shall accrue for the period from and
after such date, except if such Business Day is in the next succeeding calendar
year, such payment will be made on the immediately preceding Business Day.

     SECTION 14.08.  Table of Contents, Headings, etc.

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

     SECTION 14.09.  Execution in Counterparts.

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

     SECTION 14.10.  Separability.
                     ------------

          In case any one or more of the provisions contained in this Indenture
or in the Debt Securities shall for any reason be held to be invalid, illegal or
unenforceable in any respect, such invalidity, illegality or unenforceability
shall not affect any other provisions of this Indenture or of such Debt
Securities, but this Indenture and such Debt Securities shall be construed as if
such invalid or illegal or unenforceable provision had never been contained
herein or therein.

     SECTION 14.11.  Assignment.
                     ----------

          The Company will have the right at all times to assign any of its
rights or obligations under this Indenture to a direct or indirect wholly owned
Subsidiary of the Company,

                                       54
<PAGE>

provided that, in the event of any such assignment, the Company will remain
liable for all such obligations. Subject to the foregoing, this Indenture is
binding upon and inures to the benefit of the parties hereto and their
respective successors and assigns. This Indenture may not otherwise be assigned
by the parties thereto.

     SECTION 14.12.  Acknowledgment of Rights.

          The Company acknowledges that, with respect to any Debt Securities
held by the Trust or the Institutional Trustee of the Trust, if the
Institutional Trustee of the Trust fails to enforce its rights under this
Indenture as the holder of Debt Securities held as the assets of the Trust after
the holders of a majority in Liquidation Amount of the Capital Securities of the
Trust have so directed in writing such Institutional Trustee, a holder of record
of such Capital Securities may to the fullest extent permitted by law institute
legal proceedings directly against the Company to enforce such Institutional
Trustee's rights under this Indenture without first instituting any legal
proceedings against such Institutional Trustee or any other Person.
Notwithstanding the foregoing, if an Event of Default has occurred and is
continuing and such event is attributable to the failure of the Company to pay
interest (or premium, if any) or principal on the Debt Securities on the date
such interest (or premium, if any) or principal is otherwise due and payable (or
in the case of redemption, on the redemption date), the Company acknowledges
that a holder of record of Capital Securities of the Trust may directly
institute a proceeding against the Company for enforcement of payment to such
holder directly of the principal of (or premium, if any) or interest on the Debt
Securities having an aggregate principal amount equal to the aggregate
Liquidation Amount of the Capital Securities of such holder on or after the
respective due date specified in the Debt Securities.

                                   ARTICLE XV

                        SUBORDINATION OF DEBT SECURITIES

     SECTION 15.01.  Agreement to Subordinate.

          The Company covenants and agrees, and each holder of Debt Securities
issued hereunder and under any supplemental indenture or by any Board Resolution
(the "Additional Provisions") by such Securityholder's acceptance thereof
likewise covenants and agrees, that all Debt Securities shall be issued subject
to the provisions of this Article XV; and each holder of a Debt Security,
whether upon original issue or upon transfer or assignment thereof, accepts and
agrees to be bound by such provisions.

          The payment by the Company of the principal of, and premium, if any,
and interest on all Debt Securities issued hereunder and under any Additional
Provisions shall, to the extent and in the manner hereinafter set forth, be
subordinated and junior in right of payment to the prior payment in full of all
Allocable Amounts payable in respect of Senior Indebtedness of the Company,
whether outstanding at the date of this Indenture or thereafter incurred.

          No provision of this Article XV shall prevent the occurrence of any
default or Event of Default hereunder.

                                       55
<PAGE>

     SECTION 15.02.  Default on Senior Indebtedness.

          In the event and during the continuation of any default by the Company
in the payment of principal, premium, interest or any other payment due on any
Senior Indebtedness of the Company following any grace period, or in the event
that the maturity of any Senior Indebtedness of the Company has been accelerated
because of a default, and such acceleration has not been rescinded or canceled
then, in either case, no payment shall be made by the Company with respect to
the principal of, or premium, if any, or interest on the Debt Securities.

          In the event of the acceleration of the maturity of the Debt
Securities, then no payment shall be made by the Company with respect to the
principal (including prepayment payments) of (or premium, if any) or interest on
the Debt Securities until the holders of all Senior Indebtedness outstanding at
the time of such acceleration shall receive payment, in full, of all Allocable
Amounts due on or in respect of such Senior Indebtedness (including any amounts
due upon acceleration).

          In the event that, notwithstanding the foregoing, any payment shall be
received by the Trustee when such payment is prohibited by the preceding
paragraph of this Section 15.02, such payment shall, subject to Section 15.06,
be held in trust for the benefit of, and shall be paid over or delivered to, the
holders of Senior Indebtedness or their respective representatives, or to the
trustee or trustees under any indenture pursuant to which any of such Senior
Indebtedness may have been issued, as their respective interests may appear, but
only to the extent of the Allocable Amounts of such Senior Indebtedness and only
to the extent that the holders of the Senior Indebtedness (or their
representative or representatives or a trustee) notify the Trustee in writing
within 90 days of such payment of the Allocable Amounts then due and owing on
the Senior Indebtedness and only the Allocable Amounts specified in such notice
to the Trustee shall be paid to the holders of Senior Indebtedness.

     SECTION 15.03.  Liquidation; Dissolution; Bankruptcy.

          Upon any payment by the Company or distribution of assets of the
Company of any kind or character, whether in cash, property or securities, to
creditors upon any dissolution or winding-up or liquidation or reorganization of
the Company, whether voluntary or involuntary or in bankruptcy, insolvency,
receivership or other proceedings, all Allocable Amounts due upon all Senior
Indebtedness of the Company shall first be paid in full, or payment thereof
provided for in money in accordance with its terms, before any payment is made
by the Company, on account of the principal (and premium, if any) or interest on
the Debt Securities; and upon any such dissolution or winding-up or liquidation
or reorganization, any payment by the Company, or distribution of assets of the
Company of any kind or character, whether in cash, property or securities, to
which the Securityholders or the Trustee would be entitled to receive from the
Company, except for the provisions of this Article XV, shall be paid by the
Company, or by any receiver, trustee in bankruptcy, liquidating trustee, agent
or other Person making such payment or distribution, or by the Securityholders
or by the Trustee under this Indenture if received by them or it, directly to
the holders of the Allocable Amounts of the Company's Senior Indebtedness (pro
rata to such holders on the basis of the respective Allocable Amounts of Senior
Indebtedness held by such holders, as calculated by the Company) or their
representative or representatives, or to the trustee or trustees under any
indenture pursuant to which any

                                       56
<PAGE>

instruments evidencing such Allocable Amounts may have been issued, as their
respective interests may appear, to the extent necessary to pay such Allocable
Amounts in full, in money or money's worth, after giving effect to any
concurrent payment or distribution to or for the holders of such Allocable
Amounts, before any payment or distribution is made to the Securityholders.

          In the event that, notwithstanding the foregoing, any payment or
distribution of assets of the Company of any kind or character, whether in cash,
property or securities, prohibited by the foregoing, shall be received by the
Trustee before all Senior Indebtedness of the Company is paid in full, or
provision is made for such payment in money in accordance with its terms, such
payment or distribution shall be held in trust for the benefit of and shall be
paid over or delivered to the holders of such Allocable Amounts of  Senior
Indebtedness or their representative or representatives, or to the trustee or
trustees under any indenture pursuant to which any instruments evidencing such
Allocable Amounts of Senior Indebtedness may have been issued, as their
respective interests may appear, as calculated by the Company, for application
to the payment of all Senior Indebtedness of the Company, remaining unpaid to
the extent necessary to pay such Allocable Amounts of Senior Indebtedness in
full in money in accordance with its terms, after giving effect to any
concurrent payment or distribution to or for the benefit of the holders of such
Senior Indebtedness.

          For purposes of this Article XV, the words "cash, property or
securities" shall not be deemed to include shares of stock of the Company as
reorganized or readjusted, or securities of the Company or any other corporation
provided for by a plan of reorganization or readjustment, the payment of which
is subordinated at least to the extent provided in this Article XV with respect
to the Debt Securities to the payment of all Senior Indebtedness of the Company,
that may at the time be outstanding, provided that (a) such Senior Indebtedness
is assumed by the new corporation, if any, resulting from any such
reorganization or readjustment, and (b) the rights of the holders of such Senior
Indebtedness are not, without the consent of such holders, altered by such
reorganization or readjustment.  The consolidation of the Company with, or the
merger of the Company into, another corporation or the liquidation or
dissolution of the Company following the conveyance or transfer of its property
as an entirety, or substantially as an entirety, to another corporation upon the
terms and conditions provided for in Article IX of this Indenture shall not be
deemed a dissolution, winding-up, liquidation or reorganization for the purposes
of this Section 15.03 if such other corporation shall, as a part of such
consolidation, merger, conveyance or transfer, comply with the conditions stated
in Article IX of this Indenture.  Nothing in Section 15.02 or in this Section
15.03 shall apply to claims of, or payments to, the Trustee under or pursuant to
Section 6.06 of this Indenture.

     SECTION 15.04.  Subrogation.
                     -----------

          Subject to the payment in full of all Allocable Amounts of Senior
Indebtedness of the Company, the Securityholders shall be subrogated to the
rights of the holders of such Senior Indebtedness to receive payments or
distributions of cash, property or securities of the Company, applicable to such
Senior Indebtedness until the principal of (and premium, if any) and interest on
the Debt Securities shall be paid in full; and, for the purposes of such
subrogation, no payments or distributions to the holders of such Senior
Indebtedness of any cash, property or securities to which the Securityholders or
the Trustee would be entitled except for the provisions of this Article XV, and
no payment over pursuant to the provisions of this Article XV to or for

                                       57
<PAGE>

the benefit of the holders of such Senior Indebtedness by Securityholders or the
Trustee, shall, as between the Company, its creditors other than holders of
Senior Indebtedness of the Company, and the holders of the Debt Securities be
deemed to be a payment or distribution by the Company to or on account of such
Senior Indebtedness. It is understood that the provisions of this Article XV are
and are intended solely for the purposes of defining the relative rights of the
holders of the Debt Securities, on the one hand, and the holders of such Senior
Indebtedness, on the other hand.

          Nothing contained in this Article XV or elsewhere in this Indenture,
any Additional Provisions or in the Debt Securities is intended to or shall
impair, as between the Company, its creditors other than the holders of Senior
Indebtedness of the Company, and the holders of the Debt Securities, the
obligation of the Company, which is absolute and unconditional, to pay to the
holders of the Debt Securities the principal of (and premium, if any) and
interest on the Debt Securities as and when the same shall become due and
payable in accordance with their terms, or is intended to or shall affect the
relative rights of the holders of the Debt Securities and creditors of the
Company, other than the holders of Senior Indebtedness of the Company, nor shall
anything herein or therein prevent the Trustee or the holder of any Debt
Security from exercising all remedies otherwise permitted by applicable law upon
default under this Indenture, subject to the rights, if any, under this Article
XV of the holders of such Senior Indebtedness in respect of cash, property or
securities of the Company, received upon the exercise of any such remedy.

          Upon any payment or distribution of assets of the Company referred to
in this Article XV, the Trustee, subject to the provisions of Article VI of this
Indenture, and the Securityholders shall be entitled to conclusively rely upon
any order or decree made by any court of competent jurisdiction in which such
dissolution, winding-up, liquidation or reorganization proceedings are pending,
or a certificate of the receiver, trustee in bankruptcy, liquidation trustee,
agent or other Person making such payment or distribution, delivered to the
Trustee or to the Securityholders, for the purposes of ascertaining the Persons
entitled to participate in such distribution, the holders of Senior Indebtedness
and other indebtedness of the Company, the amount thereof or payable thereon,
the amount or amounts paid or distributed thereon and all other facts pertinent
thereto or to this Article XV.

     SECTION 15.05.  Trustee to Effectuate Subordination.

          Each Securityholder by such Securityholder's acceptance thereof
authorizes and directs the Trustee on such Securityholder's behalf to take such
action as may be necessary or appropriate to effectuate the subordination
provided in this Article XV and appoints the Trustee such Securityholder's
attorney-in-fact for any and all such purposes.

     SECTION 15.06.  Notice by the Company.

          The Company shall give prompt written notice to a Responsible Officer
of the Trustee at the Principal Office of the Trustee of any fact known to the
Company that would prohibit the making of any payment of monies to or by the
Trustee in respect of the Debt Securities pursuant to the provisions of this
Article XV.  Notwithstanding the provisions of this Article XV or any other
provision of this Indenture or any Additional Provisions, the Trustee

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shall not be charged with knowledge of the existence of any facts that would
prohibit the making of any payment of monies to or by the Trustee in respect of
the Debt Securities pursuant to the provisions of this Article XV, unless and
until a Responsible Officer of the Trustee at the Principal Office of the
Trustee shall have received written notice thereof from the Company or a holder
or holders of Senior Indebtedness or from any trustee therefor; and before the
receipt of any such written notice, the Trustee, subject to the provisions of
Article VI of this Indenture, shall be entitled in all respects to assume that
no such facts exist; provided, however, that if the Trustee shall not have
                     --------  -------
received the notice provided for in this Section 15.06 at least two Business
Days prior to the date upon which by the terms hereof any money may become
payable for any purpose (including, without limitation, the payment of the
principal of (or premium, if any) or interest on any Debt Security), then,
anything herein contained to the contrary notwithstanding, the Trustee shall
have full power and authority to receive such money and to apply the same to the
purposes for which they were received, and shall not be affected by any notice
to the contrary that may be received by it within two Business Days prior to
such date.

          The Trustee, subject to the provisions of Article VI of this
Indenture, shall be entitled to conclusively rely on the delivery to it of a
written notice by a Person representing himself to be a holder of Senior
Indebtedness of the Company (or a trustee or representative on behalf of such
holder), to establish that such notice has been given by a holder of such Senior
Indebtedness or a trustee or representative on behalf of any such holder or
holders.  In the event that the Trustee determines in good faith that further
evidence is required with respect to the right of any Person as a holder of such
Senior Indebtedness to participate in any payment or distribution pursuant to
this Article XV, the Trustee may request such Person to furnish evidence to the
reasonable satisfaction of the Trustee as to the amount of such Senior
Indebtedness held by such Person, the extent to which such Person is entitled to
participate in such payment or distribution and any other facts pertinent to the
rights of such Person under this Article XV, and, if such evidence is not
furnished, the Trustee may defer any payment to such Person pending judicial
determination as to the right of such Person to receive such payment.

     SECTION 15.07.  Rights of the Trustee; Holders of Senior Indebtedness.

          The Trustee in its individual capacity shall be entitled to all the
rights set forth in this Article XV in respect of any Senior Indebtedness at any
time held by it, to the same extent as any other holder of Senior Indebtedness,
and nothing in this Indenture or any Additional Provisions shall deprive the
Trustee of any of its rights as such holder.

          With respect to the holders of Senior Indebtedness of the Company, the
Trustee undertakes to perform or to observe only such of its covenants and
obligations as are specifically set forth in this Article XV, and no implied
covenants or obligations with respect to the holders of such Senior Indebtedness
shall be read into this Indenture or any Additional Provisions against the
Trustee.  The Trustee shall not be deemed to owe any fiduciary duty to the
holders of such Senior Indebtedness and, subject to the provisions of Article VI
of this Indenture, the Trustee shall not be liable to any holder of such Senior
Indebtedness if it shall pay over or deliver to Securityholders, the Company or
any other Person money or assets to which any holder of such Senior Indebtedness
shall be entitled by virtue of this Article XV or otherwise.

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          Nothing in this Article XV shall apply to claims of, or payments to,
the Trustee under or pursuant to Section 6.06.

     SECTION 15.08.  Subordination May Not Be Impaired.

          No right of any present or future holder of any Senior Indebtedness of
the Company to enforce subordination as herein provided shall at any time in any
way be prejudiced or impaired by any act or failure to act on the part of the
Company, or by any act or failure to act, in good faith, by any such holder, or
by any noncompliance by the Company, with the terms, provisions and covenants of
this Indenture, regardless of any knowledge thereof that any such holder may
have or otherwise be charged with.

          Without in any way limiting the generality of the foregoing paragraph,
the holders of Senior Indebtedness of the Company may, at any time and from time
to time, without the consent of or notice to the Trustee or the Securityholders,
without incurring responsibility to the Securityholders and without impairing or
releasing the subordination provided in this Article XV or the obligations
hereunder of the holders of the Debt Securities to the holders of such Senior
Indebtedness, do any one or more of the following: (a) change the manner, place
or terms of payment or extend the time of payment of, or renew or alter, such
Senior Indebtedness, or otherwise amend or supplement in any manner such Senior
Indebtedness or any instrument evidencing the same or any agreement under which
such Senior Indebtedness is outstanding; (b) sell, exchange, release or
otherwise deal with any property pledged, mortgaged or otherwise securing such
Senior Indebtedness; (c) release any Person liable in any manner for the
collection of such Senior Indebtedness; and (d) exercise or refrain from
exercising any rights against the Company, and any other Person.

          The Bank of New York, in its capacity as Trustee, hereby accepts the
trusts in this Indenture declared and provided, upon the terms and conditions
herein above set forth.

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

                                              GREATER BAY BANCORP

                                              By /s/ Shawn E. Saunders
                                                 -------------------------------

                                              Name: Shawn E. Saunders
                                              Title: Vice President, Finance and
                                                     Accounting

                                              THE BANK OF NEW YORK, as Trustee

                                              By /s/ Mary LaGumina
                                                 -------------------------------

                                              Name: Mary LaGumina
                                              Title: Vice President
<PAGE>

                                                                       EXHIBIT A


                             FORM OF DEBT SECURITY