Document:

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                                                                    EXHIBIT 4.04

                              [FACE OF SECURITY]

THIS SECURITY AND ANY COMMON STOCK ISSUABLE UPON THE CONVERSION OF THIS SECURITY
HAVE NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED (THE
"SECURITIES ACT"), AND MAY NOT BE  SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE
OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM.  EACH PURCHASER OF
THIS SECURITY THAT IS A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN RULE 144A
UNDER THE SECURITIES ACT) IS HEREBY NOTIFIED THAT THE SELLER OF THIS SECURITY
MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE
SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER.

THIS SECURITY AND ANY SHARES OF COMMON STOCK ISSUABLE UPON ITS CONVERSION MAY
NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT (I) TO A PERSON
WHO THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER ACQUIRING
FOR ITS OWN ACCOUNT OR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER IN A
TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, (II) TO AN INSTITUTION THAT
IS AN "ACCREDITED INVESTOR" WITHIN THE MEANING OF RULE 501(a)(1), (2), (3) OR
(7) UNDER THE SECURITIES ACT IN A TRANSACTION EXEMPT FROM THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT, (III)  PURSUANT TO THE EXEMPTION FROM
REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER (IF
AVAILABLE), OR (IV) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE
SECURITIES ACT, AND IN EACH OF CASES (I) THROUGH (IV) IN ACCORDANCE WITH ALL
APPLICABLE SECURITIES LAWS OF THE STATES AND OTHER JURISDICTION OF THE UNITED
STATES.

THIS SECURITY, ANY SHARES OF COMMON STOCK ISSUABLE UPON ITS CONVERSION AND ANY
RELATED DOCUMENTATION MAY BE AMENDED OR SUPPLEMENTED FROM TIME TO TIME TO MODIFY
THE RESTRICTIONS ON RESALES AND OTHER TRANSFERS OF THIS SECURITY AND ANY SUCH
SHARES TO REFLECT ANY CHANGE IN APPLICABLE LAW OR REGULATION (OR THE
INTERPRETATION THEREOF) OR IN PRACTICES RELATING TO THE RESALE OR TRANSFER OF
RESTRICTED SECURITIES GENERALLY.  THE HOLDER OF THIS SECURITY AND ANY SUCH
SHARES SHALL BE DEEMED BY THE ACCEPTANCE OF THIS SECURITY AND ANY SUCH SHARES TO
HAVE AGREED TO ANY SUCH AMENDMENT OR SUPPLEMENT.

THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF THE DEPOSITARY OR A
NOMINEE OF THE DEPOSITARY, WHICH MAY BE
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TREATED BY THE COMPANY, THE TRUSTEE AND ANY AGENT THEREOF AS OWNER AND HOLDER OF
THIS SECURITY FOR ALL PURPOSES.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE COMPANY OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO
CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR SECURITIES IN
DEFINITIVE REGISTERED FORM IN THE LIMITED CIRCUMSTANCES REFERRED TO IN THE
INDENTURE, THIS GLOBAL SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE
DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO
THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY
SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR
DEPOSITARY.
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                          EXODUS COMMUNICATIONS, INC.

             4 3/4% CONVERTIBLE SUBORDINATED NOTE DUE JULY 15, 2008

CUSIP NO. 302088 AG 4

No. C1                                                              $400,000,000

     EXODUS COMMUNICATIONS, INC., a corporation duly organized and existing
under the laws of the State of Delaware (herein called the "Company", which term
includes any successor Person under the Indenture referred to on the reverse
hereof), for value received, hereby promises to pay to Cede & Co., or registered
assigns, the principal sum of Four Hundred Million United States Dollars
($400,000,000) (which principal amount may from time to time be increased or
decreased to such other principal amounts (which, taken together with the
principal amounts of all other Outstanding Securities, shall not exceed
$500,000,000 in the aggregate at any time) by adjustments made on the records of
the Trustee hereinafter referred to in accordance with the Indenture) on July
15, 2008 and to pay interest thereon, from December 8, 1999, or from the most
recent Interest Payment Date (as defined below) to which interest has been paid
or duly provided for, semi-annually in arrears on January 15 and July 15 in each
year (each, an "Interest Payment Date"), commencing July 15, 2000, at the rate
of 4 3/4% per annum, until the principal hereof is due, and at the rate of 6
3/4% per annum on any overdue principal and premium, if any, and, to the extent
permitted by law, on any overdue interest. The interest so payable, and
punctually paid or duly provided for, on any Interest Payment Date will, as
provided in the Indenture, be paid to the Person in whose name this Security (or
one or more Predecessor Securities) is registered at the close of business on
the Regular Record Date for such interest, which shall be the January 1 or July
1 (whether or not a Business Day), as the case may be, next preceding such
Interest Payment Date. Except as otherwise provided in the Indenture, any such
interest not so punctually paid or duly provided for will forthwith cease to be
payable to the Holder on such Regular Record Date and may either be paid to the
Person in whose name this Security (or one or more Predecessor Securities) is
registered at the close of business on a Special Record Date for the payment of
such Defaulted Interest to be fixed by the Company, notice whereof shall be
given to Holders of Securities not less than 10 days prior to the Special Record
Date, or be paid at any time in any other lawful manner not inconsistent with
the requirements of any automated quotation system or securities exchange on
which the Securities may be quoted or listed, and upon such notice as may be
required by such exchange, all as more fully provided in the Indenture. Payments
of principal shall be made upon the surrender of this Security at the option of
the Holder at the Corporate Trust Office of the Trustee, or at such other office
or agency of the Company as may be designated by it for such purpose in the
Borough of Manhattan, The City of New York, in such coin or currency of the
United States of America as at the time of payment shall be legal tender for the
payment of public and private debts, or at such other offices or agencies as the
Company may designate, by United States Dollar check drawn on, or transfer to, a
United States Dollar account (such a transfer to be made only to a Holder of an
aggregate principal amount of Securities in excess of $2,000,000, and only if
such Holder shall have furnished wire instructions in writing to the Trustee no
later than 15 days prior to the relevant payment date). Payment of interest on
this Security may be made by United States Dollar check mailed to the address of
the Person
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entitled thereto as such address shall appear in the Security Register, or, upon
written application by the Holder to the Security Registrar setting forth wire
instructions not later than the relevant Record Date, by transfer to a United
States Dollar account (such a transfer to be made only to a Holder of an
aggregate principal amount of Securities in excess of $2,000,000 and only if
such Holder shall have furnished wire instructions in writing to the Trustee no
later than 15 days prior to the relevant payment date).

Except as specifically provided herein and in the Indenture, the Company shall
not be required to make any payment with respect to any tax, assessment or other
governmental charge imposed by any government or any political subdivision or
taxing authority thereof or therein.

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

Unless the certificate of authentication hereon has been executed by the Trustee
referred to on the reverse hereof or an Authenticating Agent by the manual
signature of one of their respective authorized signatories, this Security shall
not be entitled to any benefit under the Indenture or be valid or obligatory for
any purpose.
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     IN WITNESS WHEREOF, the Company has caused this Security to be duly
executed.

                                         EXODUS COMMUNICATIONS, INC.

                                         By:_______________________________
                                                 Name:  Ellen M. Hancock
                                                 Title: Chief Executive Officer
                                                        and President

                                         Attest:___________________________
                                                 Name:  Adam W. Wegner
                                                 Title: Secretary

CERTIFICATE OF AUTHENTICATION

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

Dated:  December 8, 1999

CHASE MANHATTAN BANK AND TRUST
COMPANY, NATIONAL ASSOCIATION,
as Trustee

By: _________________________________
    Authorized Signatory
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                             [REVERSE OF SECURITY]

This Security is one of a duly authorized issue of securities of the Company
designated as its "4 3/4% Convertible Subordinated Notes due July 15, 2008"
(herein called the "Securities"), limited in aggregate principal amount to
$500,000,000, issued and to be issued under an Indenture, dated as of December
1, 1999 (herein called the "Indenture"), between the Company and Chase Manhattan
Bank and Trust Company, National Association, as Trustee (herein called the
"Trustee", which term includes any successor trustee under the Indenture), to
which Indenture and all indentures supplemental thereto reference is hereby made
for a statement of the respective rights, limitations of rights, duties and
immunities thereunder of the Company, the Trustee, the holders of Senior
Indebtedness and the Holders of the Securities and of the terms upon which the
Securities are, and are to be, authenticated and delivered.  As provided in the
Indenture and subject to certain limitations therein set forth, Securities are
exchangeable for a like aggregate principal amount of Securities of any
authorized denominations as requested by the Holder surrendering the same upon
surrender of the Security or Securities to be exchanged, at the Corporate Trust
Office of the Trustee. The Trustee upon such surrender by the Holder will issue
the new Securities in the requested denominations.

No sinking fund is provided for the Securities.  The Securities will not be
subject to redemption prior to January 20, 2002 and will be redeemable on and
after that date at the option of the Company, in whole or in part, upon not less
than 30 nor more than 60 days notice to the Holders prior to the Redemption Date
at the Redemption Prices (expressed as percentages of the principal amount) set
forth below; provided, however, that the Securities will not be redeemable at
the option of the Company on or after January 20, 2002 and before January 15,
2004 unless the last reported bid price for the Common Stock equals or exceeds
140% of the conversion price for at least 20 trading days within a period of 30
consecutive trading days ending within five trading days of the call for
redemption.

The following table sets forth the Redemption Prices (expressed as percentages
of the principal amount) if such Security is redeemed during the 12-month
periods beginning on January 15 of the years indicated below (other than 2002
which period will be from January 20, 2002 to January 14, 2003 and 2008 which
period will be from January 15, 2008 through July 14, 2008):

                    YEAR                               REDEMPTION PRICE
                    ----                               ----------------
                    2002                                       103.632%
                    2003                                       103.074%
                    2004                                       102.515%
                    2005                                       101.956%
                    2006                                       101.397%
                    2007                                       100.838%
                    2008                                       100.279%

and thereafter at a Redemption Price equal to 100% of the principal amount,
together, in each case, with accrued interest to the Redemption Date; provided,
however, that interest installments on Securities whose Stated Maturity is on or
prior to such Redemption Date will be payable to the
<PAGE>

Holders of such Securities, or one or more Predecessor Securities, of record at
the close of business on the relevant Record Dates referred to on the face
hereof, all as provided in the Indenture.

In the event of a redemption of the Securities, the Company will not be required
(a) to register the transfer or exchange of Securities for a period of 15 days
immediately preceding the date notice is given identifying the serial numbers of
the Securities called for such redemption or (b) to register the transfer or
exchange of any Security, or portion thereof, called for redemption.

In any case where the due date for the payment of the principal of, premium, if
any, interest, or Liquidated Damages on any Security or the last day on which a
Holder of a Security has a right to convert his Security shall be, at any Place
of Payment or Place of Conversion as the case may be, a day on which banking
institutions at such Place of Payment or Place of Conversion are authorized or
obligated by law or executive order to close, then payment of principal,
premium, if any, interest, or Liquidated Damages, or delivery for conversion of
such Security need not be made on or by such date at such place but may be made
on or by the next succeeding day at such place which is not a day on which
banking institutions are authorized or obligated by law or executive order to
close, with the same force and effect as if made on the date for such payment or
the date fixed for redemption or repurchase, or by such last day for conversion,
and no interest shall accrue on the amount so payable for the period after such
date.

Subject to and upon compliance with the provisions of the Indenture, the Holder
of this Security is entitled, at his option, at any time following the initial
issuance date of the Securities and on or before the close of business on the
date of Maturity, or in case this Security or a portion hereof is called for
redemption or the Holder hereof has exercised his right to require the Company
to repurchase this Security or such portion hereof, then in respect of this
Security until and including, but (unless the Company defaults in making the
payment due upon redemption or repurchase, as the case may be) not after, the
close of business on the Redemption Date or the Repurchase Date, as the case may
be, to convert this Security (or any portion of the principal amount hereof that
is an integral multiple of $1,000, provided that the unconverted portion of such
principal amount is  $1,000 or any integral multiple of $1,000 in excess
thereof) into fully paid and nonassessable shares of Common Stock of the Company
at an initial Conversion Rate of 7.1017 shares of Common Stock for each $1,000
principal amount of Securities (or at the current adjusted Conversion Rate if an
adjustment has been made as provided in the Indenture) by surrender of this
Security, duly endorsed or assigned to the Company or in blank, with the
conversion notice hereon duly executed and, in case such surrender shall be made
during the period from the close of business on any Regular Record Date next
preceding any Interest Payment Date to the opening of business on such Interest
Payment Date (except if this Security or portion thereof has been called for
redemption on a Redemption Date during the period from such Regular Record Date
through the date that is three Business Days following such Interest Payment
Date), also accompanied by payment in New York Clearing House or other funds
acceptable to the Company of an amount equal to the interest payable on such
Interest Payment Date on the principal amount of this Security then being
converted, to the Company at the Corporate Trust Office of the Trustee, or at
such other office or agency of the Company, subject to any laws or regulations
applicable thereto and subject to the right of the Company to terminate the
appointment of any Conversion Agent (as defined below) as may be
<PAGE>

designated by it for such purpose in the Borough of Manhattan, The City of New
York, or at such other offices or agencies as the Company may designate (each a
"Conversion Agent"). Subject, in the case of a conversion after the close of
business on the Regular Record Date next preceding any Interest Payment Date and
on or before the close of business on such Interest Payment Date, to the right
of the Holder of this Security (or any Predecessor Security of record as of such
Regular Record Date) to receive the related installment of interest to the
extent and under the circumstances provided in the Indenture, no cash payment or
adjustment is to be made on conversion for interest accrued hereon from the
Interest Payment Date next preceding the day of conversion, or for dividends on
the Common Stock issued on conversion hereof. The Company shall thereafter
deliver to the Holder the fixed number of shares of Common Stock (together with
any cash adjustment, as provided in the Indenture) into which this Security is
convertible and such delivery will be deemed to satisfy the Company's obligation
to pay the principal amount of this Security. No fractions of shares or scrip
representing fractions of shares will be issued on conversion, but instead of
any fractional interest (calculated to the nearest 1/100th of a share) the
Company shall pay a cash adjustment as provided in the Indenture. The Conversion
Rate is subject to adjustment as provided in the Indenture. In addition, the
Indenture provides that in case of certain consolidations or mergers to which
the Company is a party (other than a consolidation or merger that does not
result in any reclassification, conversion, exchange or cancellation of the
Common Stock) or the conveyance, transfer, sale or lease of all or substantially
all of the property and assets of the Company, the Indenture shall be amended,
without the consent of any Holders of Securities, so that this Security, if then
Outstanding, will be convertible thereafter, during the period this Security
shall be convertible as specified above, only into the kind and amount of
securities, cash and other property receivable upon such consolidation, merger,
conveyance, transfer, sale or lease by a holder of the number of shares of
Common Stock of the Company into which this Security could have been converted
immediately prior to such consolidation, merger, conveyance, transfer, sale or
lease (assuming such holder of Common Stock is not a Constituent Person or an
Affiliate of a Constituent Person, failed to exercise any rights of election and
received per share the kind and amount received per share by a plurality of Non-
electing Shares). No adjustment in the Conversion Rate will be made until such
adjustment would require an increase or decrease of at least one percent of such
rate, provided that any adjustment that would otherwise be made will be carried
forward and taken into account in the computation of any subsequent adjustment.

If this Security is a Registrable Security (as defined in the Indenture), then
the Holder of this Security (including any Person that has a beneficial interest
in this Security) and the Common Stock of the Company issuable upon conversion
hereof is entitled to the benefits of the Registration Rights Agreement, dated
as of December 1, 1999 (the "Registration Rights Agreement"), between the
Company and the Initial Purchasers, as such agreement may be amended from time
to time.  Pursuant to the Registration Rights Agreement, the Company has agreed
for the benefit of the Holders from time to time of the Registrable Securities
that it will, at its expense, (a) within 90 days after the Issue Date file a
shelf registration statement (the "Shelf Registration Statement") with the
Commission with respect to resales of the Registrable Securities, (b) use all
reasonable efforts to cause such Shelf  Registration Statement to be declared
effective by the Commission within 180 days after the Issue Date of the
Securities, provided, however, that the Company may, upon written
<PAGE>

notice to all the Holders, postpone having the Shelf Registration Statement
declared effective for a reasonable period not to exceed 90 days if the Company
possesses material non-public information, the disclosure of which would have a
material adverse effect on the Company and its subsidiaries taken as a whole,
and (c) use all reasonable efforts to maintain such Shelf Registration Statement
effective under the Securities Act of 1933, as amended, until the second annual
anniversary of the date it is declared effective or such earlier date as is
provided in the Registration Rights Agreement (the "Effectiveness Period"). The
Company will be permitted to suspend the use of the prospectus which is part of
the Shelf Registration Statement during certain periods of time as provided in
the Registration Rights Agreement.

If (i) on or prior to 90 days following the Issue Date, a Shelf  Registration
Statement has not been filed with the Commission, or (ii) on or prior to the
180th day following the Issue Date, such Shelf Registration Statement is not
declared effective (each, a "Registration Default"), additional interest
("Liquidated Damages") will accrue on this Restricted Security from and
including the day following such Registration Default to but excluding the day
on which such Registration Default has been cured. Liquidated Damages will be
paid semi-annually in arrears, with the first semi-annual payment due on the
first Interest Payment Date, as applicable, in respect of the Restricted
Securities following the date on which such Liquidated Damages begin to accrue,
and will accrue at a rate per annum equal to an additional one-quarter of one
percent (0.25%) of the principal amount of the Restricted Securities to and
including the 90th day following such Registration Default and at a rate per
annum equal to one-half of one percent (0.50%) thereof from and after the 91st
day following such Registration Default. Pursuant to the Registration Rights
Agreement, in the event that the Shelf Registration Statement ceases to be
effective (or the Holders of Registrable Securities are otherwise prevented or
restricted by the Company from effecting sales pursuant thereto) (an "Effective
Failure") during the Effectiveness Period for more than 45 days, whether or not
consecutive, during any 90 day period, or for more than 90 days, whether or not
consecutive, during any 12-month period, then the interest rate borne by the
Restricted Securities shall increase by an additional one-half of one percent
(0.50%) per annum from the 46th day of the applicable 90 day period or the 91st
day of the applicable 12-month period, as the case may be, until such time as
the Effective Failure is cured.

Whenever in this Security there is a reference, in any context, to the payment
of the principal of, premium, if any, or interest on, or in respect of, any
Security, such mention shall be deemed to include mention of the payment of
Liquidated Damages payable as described in the preceding paragraph to the extent
that, in such context, Liquidated Damages are, were or would be payable in
respect of such Security and express mention of the payment of Liquidated
Damages (if applicable) in any provisions of this Security shall not be
construed as excluding Liquidated Damages in those provisions of this Security
where such express mention is not made.

If this Security is a Registrable Security and the Holder of this Security
(including any Person that has a beneficial interest in this Security) elects to
sell this Security pursuant to the Shelf Registration Statement then, by its
acceptance hereof, such Holder of this Security agrees to be bound by the terms
of the Registration Rights Agreement relating to the Registrable Securities
which are the subject of such election.
<PAGE>

If a Change in Control occurs, the Holder of this Security, at the Holder's
option, shall have the right, in accordance with the provisions of the
Indenture, to require the Company to repurchase this Security (or any portion of
the principal amount hereof that is an integral multiple of $1,000 for cash at a
Repurchase Price equal to 100% of the principal amount thereof plus interest
accrued to the Repurchase Date. At the option of the Company, the Repurchase
Price may be paid in cash or, subject to the conditions provided in the
Indenture, by delivery of shares of Common Stock having a fair market value
equal to the Repurchase Price. For purposes of this paragraph, the fair market
value of shares of Common Stock shall be determined by the Company and shall be
equal to 95% of the average of the Closing Prices Per Share for the five
consecutive Trading Days immediately preceding and including the third Trading
Day prior to the Repurchase Date. Whenever in this Security there is a
reference, in any context, to the principal of any Security as of any time, such
reference shall be deemed to include reference to the Repurchase Price payable
in respect of such Security to the extent that such Repurchase Price is, was or
would be so payable at such time, and express mention of the Repurchase Price in
any provision of this Security shall not be construed as excluding the
Repurchase Price so payable in those provisions of this Security when such
express mention is not made; provided, however, that, for the purposes of the
second succeeding paragraph, such reference shall be deemed to include reference
to the Repurchase Price only to the extent the Repurchase Price is payable in
cash.

In the event of a deposit or withdrawal of an interest in this Security,
including an exchange, transfer, redemption, repurchase or conversion of this
Security in part only, the Trustee, as custodian of the Depositary, shall make
an adjustment on its records to reflect such deposit or withdrawal in accordance
with the Applicable Procedures.

The indebtedness evidenced by this Security is, to the extent and in the manner
provided in the Indenture, subordinate and subject in right of  payment to the
prior payment in full of all Senior Indebtedness of the Company, and this
Security is issued subject to such provisions of the Indenture with respect
thereto. Each Holder of this Security, by accepting the same, (a) agrees to and
shall be bound by such provisions, (b) authorizes and directs the Trustee on his
behalf to take such action as may be necessary or appropriate to effectuate the
subordination so provided and (c) appoints the Trustee his attorney-in-fact for
any and all such purposes.

If an Event of Default shall occur and be continuing, the principal of all the
Securities, together with accrued interest to the date of declaration, may be
declared due and payable in the manner and with the effect provided in the
Indenture. Upon payment (i) of the amount of principal so declared due and
payable, together with accrued interest to the date of declaration, and (ii) of
interest on any overdue principal and, to the extent permitted by applicable
law, overdue interest, all of the Company's obligations in respect of the
payment of the principal of and interest on the Securities shall terminate.

The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities under the Indenture at
any time by the Company and the Trustee with either (a) the written consent of
the Holders of not less than a majority in principal amount of the Securities at
the time
<PAGE>

Outstanding, or (b) by the adoption of a resolution, at a meeting of Holders of
the Outstanding Securities at which a quorum is present, by the Holders of at
least 66-2/3% in aggregate principal amount of the Outstanding Securities
represented and entitled to vote at such meeting. The Indenture also contains
provisions permitting the Holders of specified percentages in principal amount
of the Securities at the time Outstanding, on behalf of the Holders of all the
Securities, to waive compliance by the Company with certain provisions of the
Indenture and certain past defaults under the Indenture and their consequences.
Any such consent or waiver by the Holder of this Security shall be conclusive
and binding upon such Holder and upon all future Holders of this Security and of
any Security issued in exchange therefore or in lieu hereof whether or not
notation of such consent or waiver is made upon this Security or such other
Security.

As provided in and subject to the provisions of the Indenture, the Holder of
this Security shall not have the right to institute any proceeding with respect
to the Indenture or for the appointment of a receiver or trustee or for any
other remedy thereunder, unless such Holder shall have previously given the
Trustee written notice of a continuing Event of Default, the Holders of not less
than 25% in principal amount of the Outstanding Securities shall have made
written request to the Trustee to institute proceedings in respect of such Event
of Default as Trustee and offered the Trustee reasonable indemnity and the
Trustee shall not have received from the Holders of a majority in principal
amount of the Securities Outstanding a direction inconsistent with such request,
and shall have failed to institute any such proceeding, for 60 days after
receipt of such notice, request and offer of indemnity. The foregoing shall not
apply to any suit instituted by the Holder of this Security for the enforcement
of any payment of principal hereof, premiums if any, or interest (including
Liquidated Damages) hereon on or after the respective due dates expressed herein
or for the enforcement of the right to convert this Security as provided in the
Indenture.

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

As provided in the Indenture and subject to certain limitations therein set
forth, the transfer of this Security is registrable on the Security Register
upon surrender of this Security for registration of  transfer at the Corporate
Trust Office of the Trustee or at such other office or agency of the Company as
may be designated by it for such purpose in the Borough of Manhattan, The City
of New York (which shall initially be an office or agency of the Trustee), or at
such other offices or agencies as the Company may designate, duly endorsed by,
or accompanied by a written instrument of transfer in form satisfactory to the
Company and the Security Registrar duly executed by, the Holder thereof or his
attorney duly authorized in writing, and thereupon one or more new Securities,
of  authorized denominations and for the same aggregate principal amount, will
be issued to the designated transferee or transferees by the Registrar. No
service charge shall be made for any such registration of transfer or exchange,
but the Company may require payment of a sum sufficient to recover any tax or
other governmental charge payable in connection therewith.
<PAGE>

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

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

THE INDENTURE AND THIS SECURITY SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE
WITH THE LAWS OF THE STATE OF NEW YORK, UNITED STATES OF AMERICA, WITHOUT REGARD
TO THE PRINCIPLES OF CONFLICTS OF LAWS.

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

                                 ABBREVIATIONS

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

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

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

                   ELECTION OF HOLDER TO REQUIRE REPURCHASE

(1)  Pursuant to Article 14.1 of the Indenture, the undersigned hereby elects to
     have this Security repurchased by the Company.

(2)  The undersigned hereby directs the Trustee or the Company to pay it or
     ______________ an amount in cash or, at the Company's election, Common
     Stock valued as set forth in the Indenture, equal to 100% of the principal
     amount to be repurchased (as set forth below), plus interest accrued to the
     Repurchase Date, as provided in the Indenture.

Dated:____________

                                             __________________________________
                                             Signature(s)

                                             Signature(s) must be guaranteed by
                                             an Eligible Guarantor Institution
                                             with membership in an approved
                                             signature guarantee program
                                             pursuant to Rule 17Ad-15 under the
                                             Securities Exchange Act of 1934.

                                             ___________________________________
                                             Signature Guaranteed

Principal amount to be repurchased (at least
$5,000 or an integral multiple of $1,000
in excess thereof):  ___________________

Remaining principal amount following such
repurchase (not less than $1,000):

______________

NOTICE: The signature to the foregoing Election must correspond to the Name as
written upon the face of this Security in every particular, without alteration
or any change whatsoever.
<PAGE>

                               CONVERSION NOTICE

To:  Exodus Communications, Inc.

     The undersigned Holder of this Security hereby irrevocably exercises the
option to convert this Security, or any portion of the principal amount hereof
(which is $1,000 or an integral multiple of $1,000 in excess thereof, provided
that the unconverted portion of such principal amount is $1,000 or any integral
multiple of $1,000 in excess thereof) below designated, into shares of Common
Stock in accordance with the terms of the Indenture referred to in this
Security, and directs that such shares, together with a check in payment for any
fractional share and any Securities representing any unconverted principal
amount hereof, be delivered to and be registered in the name of the undersigned
unless a different name has been indicated below. If shares of Common Stock or
Securities are to be registered in the name of a Person other than the
undersigned, (a) the undersigned will pay all transfer taxes payable with
respect thereto and (b) signature(s) must be guaranteed by an Eligible Guarantor
Institution with membership in an approved signature guarantee program pursuant
to Rule 17Ad-15 under the Securities Exchange Act of 1934. Any amount required
to be paid by the undersigned on account of interest accompanies this Security.

Dated:___________                                 _____________________________
                                                  Signature(s)

                                                  Signature(s) must be
                                                  guaranteed by an Eligible
                                                  Guarantor Institution with
                                                  membership in an approved
                                                  signature guarantee program
                                                  pursuant to Rule 17Ad - 15
                                                  under the Securities Exchange
                                                  Act of 1934.

                                                  ______________________________
                                                  Signature Guarantee
<PAGE>

If shares or Securities are to be registered in the name of a Person other than
the Holder, please print such Person's name and address:

___________________________________________
(Name)

___________________________________________
(Address)

___________________________________________
Social Security or other Identification
Number, if any.

If only a portion of the Securities is to be converted, please indicate:

1.  Principal amount to be converted:   $ ___________

2.  Principal amount and denomination of Securities
    representing unconverted principal amount to be issued:

    Amount: $___________     Denominations:  $____________

($1,000 or any integral multiple of $1,000 in excess thereof, provided that the
unconverted portion of such principal amount is $1,000 or any integral multiple
of $1,000 in excess thereof)
<PAGE>

                                  ASSIGNMENT

     For value received ________________ hereby sell(s), assign(s) and
transfer(s) unto ________________ (Please insert social security or other
identifying number of assignee) the within Security, and hereby irrevocably
constitutes and appoints ____________________as attorney to transfer the said
Security on the books of the Company, with full power of substitution in the
premises.

Dated:________

                                                    ____________________________
                                                    Signature(s)

                                                    Signature(s) must be
                                                    guaranteed by an Eligible
                                                    Guarantor Institution with
                                                    membership in an approved
                                                    signature guarantee program
                                                    pursuant to Rule 17Ad - 15
                                                    under the Securities
                                                    Exchange Act of 1934.

                                                    ____________________________
                                                    Signature Guarantee<PAGE>

                                                                    EXHIBIT 4.05

                     _______________________________________

                          EXODUS COMMUNICATIONS, INC.

                                    ISSUER

                                      TO

         CHASE MANHATTAN BANK AND TRUST COMPANY, NATIONAL ASSOCIATION,

                                    TRUSTEE

                              __________________

                                   INDENTURE

                         Dated as of December 1, 1999

                              ___________________

            4 3/4% CONVERTIBLE SUBORDINATED NOTES DUE JULY 15, 2008

                    _______________________________________
<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                                   Page
                                                                                                                   ----
<S>                                                                                                                <C>
ARTICLE I DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION.................................................    1

         SECTION 1.1           Definitions........................................................................    1
         SECTION 1.2           Compliance Certificates And Opinions...............................................   11
         SECTION 1.3           Form of Documents Delivered to The Trustee.........................................   12
         SECTION 1.4           Acts of Holders of Securities......................................................   13
         SECTION 1.5           Notices, Etc.......................................................................   15
         SECTION 1.6           Notice to Holders of Securities; Waiver............................................   16
         SECTION 1.7           Effect of Headings and Table of Contents...........................................   16
         SECTION 1.8           Successors and Assigns.............................................................   16
         SECTION 1.9           Separability Clause................................................................   16
         SECTION 1.10          Benefits of Indenture..............................................................   17
         SECTION 1.11          Governing Law......................................................................   17
         SECTION 1.12          Legal Holidays.....................................................................   17
         SECTION 1.13          Conflict With Trust Indenture Act..................................................   17

ARTICLE II SECURITY FORMS.........................................................................................   18

         SECTION 2.1           Form Generally.....................................................................   18
         SECTION 2.2           Form of Security...................................................................   19
         SECTION 2.3           Form of Certificate of Authentication..............................................   33
         SECTION 2.4           Form of Conversion Notice..........................................................   34
         SECTION 2.5           Form of Assignment.................................................................   36

ARTICLE III THE SECURITIES........................................................................................   37

         SECTION 3.1           Title and Terms....................................................................   37
         SECTION 3.2           Denominations......................................................................   38
         SECTION 3.3           Execution, Authentication, Delivery and Dating.....................................   38
         SECTION 3.4           Global Securities; Non-global Securities; Book-entry Provisions....................   38
         SECTION 3.5           Registration; Registration of Transfer and Exchange; Restrictions on Transfer......   40
         SECTION 3.6           Mutilated, Destroyed, Lost or Stolen Securities....................................   44
         SECTION 3.7           Payment of Interest; Interest Rights Preserved.....................................   45
         SECTION 3.8           Persons Deemed Owners..............................................................   46
         SECTION 3.9           Cancellation.......................................................................   47
         SECTION 3.10          Computation of Interest............................................................   47
         SECTION 3.11          Cusip Numbers......................................................................   47

ARTICLE IV SATISFACTION AND DISCHARGE.............................................................................   47

         SECTION 4.1           Satisfaction And Discharge of Indenture............................................   47
</TABLE>

                                      -i-
<PAGE>

                              TABLE OF CONTENTS
                                  (continued)
<TABLE>
<CAPTION>
                                                                                                                   Page
                                                                                                                   ----
<S>                                                                                                                <C>
         SECTION 4.2           Application of Trust Money.........................................................   49

ARTICLE V REMEDIES................................................................................................   49

         SECTION 5.1           Events of Default..................................................................   49
         SECTION 5.2           Acceleration of Maturity; Rescission and Annulment.................................   51
         SECTION 5.3           Collection of Indebtedness and Suits for Enforcement by Trustee....................   52
         SECTION 5.4           Trustee May File Proofs of Claim...................................................   53
         SECTION 5.5           Trustee May Enforce Claims Without Possession of Securities........................   53
         SECTION 5.6           Application of Money Collected.....................................................   54
         SECTION 5.7           Limitation on Suits................................................................   54
         SECTION 5.8           Unconditional Right of Holders to Receive Principal, Premium and Interest
                               and to Convert.....................................................................   55
         SECTION 5.9           Restoration of Rights and Remedies.................................................   56
         SECTION 5.10          Rights and Remedies Cumulative.....................................................   56
         SECTION 5.11          Delay or Omission Not Waiver.......................................................   56
         SECTION 5.12          Control by Holders of Securities...................................................   56
         SECTION 5.13          Waiver of Past Defaults............................................................   56
         SECTION 5.14          Undertaking for Costs..............................................................   58
         SECTION 5.15          Waiver of Stay, Usury or Extension Laws............................................   58

ARTICLE VI THE TRUSTEE............................................................................................   58

         SECTION 6.1           Certain Duties and Responsibilities................................................   58
         SECTION 6.2           Notice of Defaults.................................................................   59
         SECTION 6.3           Certain Rights of Trustee..........................................................   60
         SECTION 6.4           Not Responsible for Recitals or Issuance of Securities.............................   61
         SECTION 6.5           May Hold Securities, Act as Trustee under Other Indentures.........................   61
         SECTION 6.6           Money Held in Trust................................................................   62
         SECTION 6.7           Compensation and Reimbursement.....................................................   62
         SECTION 6.8           Corporate Trustee Required; Eligibility............................................   63
         SECTION 6.9           Resignation and Removal; Appointment of Successor..................................   63
         SECTION 6.10          Acceptance of Appointment by Successor.............................................   64
         SECTION 6.11          Merger, Conversion, Consolidation or Succession to Business........................   65
         SECTION 6.12          Authenticating Agents..............................................................   65
         SECTION 6.13          Disqualification; Conflicting Interests............................................   68
         SECTION 6.14          Preferential Collection of Claims Against Company..................................   68

ARTICLE VII CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE..................................................   68

         SECTION 7.1           Company May Consolidate, Etc.......................................................   68
</TABLE>

                                     -ii-
<PAGE>

                               TABLE OF CONTENTS
                                  (continued)

<TABLE>
<CAPTION>
                                                                                                                   Page
                                                                                                                   ----
<S>                                                                                                                <C>
         SECTION 7.2           Successor Substituted..............................................................   69

ARTICLE VIII SUPPLEMENTAL INDENTURES..............................................................................   69

         SECTION 8.1           Supplemental Indentures Without Consent of Holders of Securities...................   69
         SECTION 8.2           Supplemental Indentures with Consent of Holders of Securities......................   70
         SECTION 8.3           Execution of Supplemental Indentures...............................................   72
         SECTION 8.4           Effect of Supplemental Indentures..................................................   72
         SECTION 8.5           Reference in Securities to Supplemental Indentures.................................   72
         SECTION 8.6           Notice of Supplemental Indentures..................................................   72

ARTICLE IX MEETINGS OF HOLDERS OF SECURITIES......................................................................   72

         SECTION 9.1           Purposes for Which Meetings May Be Called..........................................   72
         SECTION 9.2           Call, Notice and Place of Meetings.................................................   73
         SECTION 9.3           Persons Entitled to Vote at Meetings...............................................   73
         SECTION 9.4           Quorum; Action.....................................................................   73
         SECTION 9.5           Determination of Voting Rights; Conduct and Adjournment of Meetings................   74
         SECTION 9.6           Counting Votes and Recording Action of Meetings....................................   75

ARTICLE X COVENANTS...............................................................................................   75

         SECTION 10.1          Payment of Principal, Premium and Interest.........................................   76
         SECTION 10.2          Maintenance of Offices or Agencies.................................................   76
         SECTION 10.3          Money for Security Payments to Be Held in Trust....................................   77
         SECTION 10.4          Existence..........................................................................   78
         SECTION 10.5          Maintenance of Properties..........................................................   78
         SECTION 10.6          Payment of Taxes and Other Claims..................................................   78
         SECTION 10.7          Registration and Listing...........................................................   78
         SECTION 10.8          Statement by Officers as to Default................................................   79
         SECTION 10.9          Delivery of Certain Information....................................................   79
         SECTION 10.10         Resale of Certain Securities.......................................................   80
         SECTION 10.11         Registration Rights................................................................   80
         SECTION 10.12         Use of Proceeds....................................................................   82
         SECTION 10.13         Waiver of Certain Covenants........................................................   82

ARTICLE XI REDEMPTION OF SECURITIES...............................................................................   82

         SECTION 11.1          Right of Redemption................................................................   82
         SECTION 11.2          Applicability of Article...........................................................   83
         SECTION 11.3          Election to Redeem; Notice to Trustee..............................................   83
         SECTION 11.4          Selection by Trustee of Securities to Be Redeemed..................................   83
</TABLE>

                                     -iii-
<PAGE>

                              TABLE OF CONTENTS
                                 (continued)
<TABLE>
<CAPTION>
                                                                                                                   Page
                                                                                                                   ----
<S>                                                                                                                <C>
         SECTION 11.5          Notice of Redemption...............................................................   83
         SECTION 11.6          Deposit of Redemption Price........................................................   84
         SECTION 11.7          Securities Payable on Redemption Date..............................................   85
         SECTION 11.8          Conversion Arrangement on Call for Redemption......................................   85

ARTICLE XII CONVERSION OF SECURITIES..............................................................................   86

         SECTION 12.1          Conversion Privilege and Conversion Rate...........................................   86
         SECTION 12.2          Exercise of Conversion Privilege...................................................   87
         SECTION 12.3          Fractions of Shares................................................................   88
         SECTION 12.4          Adjustment of Conversion Rate......................................................   89
         SECTION 12.5          Notice of Adjustments of Conversion Rate...........................................   94
         SECTION 12.6          Notice of Certain Corporate Action.................................................   94
         SECTION 12.7          Company to Reserve Common Stock....................................................   95
         SECTION 12.8          Taxes on Conversions...............................................................   95
         SECTION 12.9          Covenant as to Common Stock........................................................   96
         SECTION 12.10         Cancellation of Converted Securities...............................................   96
         SECTION 12.11         Provision in Case of Consolidation, Merger or Sale of Assets.......................   96
         SECTION 12.12         Rights Issued in Respect of Common Stock...........................................   97
         SECTION 12.13         Responsibility of Trustee for Conversion Provisions................................   98

ARTICLE XIII SUBORDINATION OF SECURITIES..........................................................................   98

         SECTION 13.1          Securities Subordinate to Senior Indebtedness......................................   98
         SECTION 13.2          No Payment in Certain Circumstances, Payment over of Proceeds upon
                               Dissolution, Etc...................................................................   98
         SECTION 13.3          Prior Payment to Senior Indebtedness upon Acceleration of Securities...............  101
         SECTION 13.4          Payment Permitted If No Default....................................................  101
         SECTION 13.5          Subrogation to Rights of Holders of Senior Indebtedness............................  101
         SECTION 13.6          Provisions Solely to Define Relative Rights........................................  102
         SECTION 13.7          Trustee to Effectuate Subordination................................................  102
         SECTION 13.8          No Waiver of Subordination Provisions..............................................  102
         SECTION 13.9          Notice to Trustee..................................................................  103
         SECTION 13.10         Reliance on Judicial Order or Certificate of Liquidating Agent.....................  104
         SECTION 13.11         Trustee Not Fiduciary for Holders of Senior Indebtedness...........................  104
         SECTION 13.12         Reliance by Holders of Senior Indebtedness on Subordination Provisions.............  104
         SECTION 13.13         Rights of Trustee as Holder of Senior Indebtedness; Preservation of
                               Trustee's Rights...................................................................  104
</TABLE>

                                     -iv-
<PAGE>

                              TABLE OF CONTENTS
                                 (continued)
<TABLE>
<CAPTION>
                                                                                                                   Page
                                                                                                                   ----
<S>                                                                                                                <C>
         SECTION 13.14         Article Applicable to Paying Agents................................................  105
         SECTION 13.15         Certain Conversions and Repurchases Deemed Payment.................................  105

ARTICLE XIV REPURCHASE OF SECURITIES AT THE OPTION OF THE HOLDER UPON A CHANGE IN CONTROL.........................  106

         SECTION 14.1          Right to Require Repurchase........................................................  106
         SECTION 14.2          Conditions to the Company's Election to Pay the Repurchase Price
                               in Common Stock....................................................................  107
         SECTION 14.3          Notices; Method of Exercising Repurchase Right, Etc................................  107
         SECTION 14.4          Certain Definitions................................................................  111
         SECTION 14.5          Consolidation, Merger, etc.........................................................  112

ARTICLE XV HOLDERS LISTS AND REPORTS BY TRUSTEE AND COMPANY.......................................................  113

         SECTION 15.1          Company to Furnish Trustee Names and Addresses of Holders..........................  113
         SECTION 15.2          Preservation of Information........................................................  113
         SECTION 15.3          Reserved...........................................................................  113
         SECTION 15.4          Reports by Company.................................................................  114

ARTICLE XVI IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS.......................................  114

         SECTION 16.1          Indenture and Securities Solely Corporate Obligations..............................  114
</TABLE>

                                      -v-
<PAGE>

          INDENTURE, dated as of December 1, 1999, between EXODUS
COMMUNICATIONS, INC., a corporation duly organized and existing under the laws
of the State of Delaware, having its principal office at 2831 Mission College
Boulevard, Santa Clara, California 95054 (herein called the "Company"), and
CHASE MANHATTAN BANK AND TRUST COMPANY, NATIONAL ASSOCIATION, a national banking
association, as Trustee hereunder (herein called the "Trustee").

                            RECITALS OF THE COMPANY

          The Company has duly authorized the creation of an issue of its 4 3/4%
Convertible Subordinated Notes due July 15, 2008 (herein called the
"Securities") of substantially the tenor and amount hereinafter set forth, and
to provide therefor the Company has duly authorized the execution and delivery
of this Indenture.

          All things necessary to make the Securities, when the Securities are
executed by the Company and authenticated and delivered hereunder, the valid
obligations of the Company, and to make this Indenture a valid agreement of the
Company, in accordance with their and its terms, have been done. Further, all
things necessary to duly authorize the issuance of the Common Stock of the
Company issuable upon the conversion of the Securities, and to duly reserve for
issuance the number of shares of Common Stock issuable upon such conversion,
have been done.

          NOW, THEREFORE, THIS INDENTURE WITNESSETH:

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

                                   ARTICLE I

            DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

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

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

          (2)  all accounting terms not otherwise defined herein have the
meanings assigned to them in accordance with generally accepted accounting
principles in the United States, and, except as otherwise herein expressly
provided, the term "generally accepted accounting principles" with
<PAGE>

respect to any computation required or permitted hereunder shall mean such
accounting principles as are generally accepted at the date of such computation;
and
          (3)  the words "herein", "hereof" and "hereunder" and other words of
similar import refer to this Indenture as a whole and not to any particular
Article, Section or other subdivision.

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

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

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

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

     "Authenticating Agent" means any Person authorized pursuant to Section 6.12
to act on behalf of the Trustee to authenticate Securities.

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

     "Board Resolution" means a resolution duly adopted by the Board of
Directors, a copy of which, 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, shall have been
delivered to the Trustee.

     "Business Day", when used with respect to any Place of Payment, Place of
Conversion or any other place, as the case may be, means each Monday, Tuesday,
Wednesday, Thursday and Friday which is not a day on which banking institutions
in such Place of Payment, Place of Conversion or other place, as the case may
be, are authorized or obligated by law or executive order to close; provided,
however, that a day on which banking institutions in New York, New York are
authorized or obligated by law or executive order to close shall not be a
Business Day for purposes of Section 13.9.

                                      -2-
<PAGE>

     "Change in Control" has the meaning specified in Section 14.4(2).

     "Closing Price Per Share" means, with respect to the Common Stock, for any
day, (i) the last reported bid price regular way on the Nasdaq National Market
or, (ii) if the Common Stock is not quoted on the Nasdaq National Market, the
last reported sale price regular way per share or, in case no such reported sale
takes place on such day, the average of the reported closing bid and asked
prices regular way, in either case, on the principal national securities
exchange on which the Common Stock is listed or admitted to trading, or (iii) if
the Common Stock is not quoted on the Nasdaq National Market or listed or
admitted to trading on any national securities exchange, the average of the
closing bid prices in the over-the-counter market as furnished by any New York
Stock Exchange member firm selected from time to time by the Company for that
purpose.

     "Code" has the meaning specified in Section 2.l.

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

     "Common Stock" means the Common Stock, par value $0.001 per share, of the
Company authorized at the date of this instrument as originally executed.
Subject to the provisions of Section 12.11, shares issuable on conversion or
repurchase of Securities shall include only shares of Common Stock or shares of
any class or classes of common stock resulting from any reclassification or
reclassifications thereof; provided, however, that if at any time there shall be
more than one such resulting class, the shares so issuable on conversion of
Securities shall include shares of all such classes, and the shares of each such
class then so issuable shall be substantially in the proportion which the total
number of shares of such class resulting from all such reclassifications bears
to the total number of shares of all such classes resulting from all such
reclassifications.

     "Common stock" includes any stock of any class of capital stock which has
no preference in respect of dividends or of amounts payable in the event of any
voluntary or involuntary liquidation, dissolution or winding up of the issuer
thereof and which is not subject to redemption by the issuer thereof.

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

     "Company Request" or "Company Order" means a written request or order
signed in the name of the Company by its (i) Chairman of the Board, its Vice
Chairman of the Board, its Chief

                                      -3-
<PAGE>

Executive Officer, its President, an Executive Vice President or a Vice
President, and by its (ii) principal financial officer, Treasurer, an Assistant
Treasurer, its Secretary or an Assistant Secretary, and delivered to the
Trustee.

     "Constituent Person" has the meaning specified in Section 12.11.

     "Conversion Agent" means any Person authorized by the Company to convert
Securities in accordance with Article XII. The Company has initially appointed
the Trustee as its Conversion Agent pursuant to Section 10.2 hereof.

     "Conversion Price" has the meaning specified in Section 14.4(3).

     "Conversion Rate" has the meaning specified in Section 12.1.

     "Corporate Trust Office" means the office of the Trustee at which at any
particular time the trust created by this Indenture shall be principally
administered (which at the date of this Indenture is located at 101 California
Street, Suite 2725, San Francisco, CA 94111, Attention: Corporate Trust
Administration (Exodus Communications, Inc., 4 3/4% Convertible Subordinated
Notes due July 15, 2008)).

     "Corporation" means a corporation, company, association, joint-stock
company or business trust.

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

     "Depositary" means, with respect to any Securities (including any Global
Securities), a clearing agency that is registered as such under the Exchange Act
and is designated by the Company to act as Depositary for such Securities (or
any successor securities clearing agency so registered).

     "Designated Senior Debt" means the Company's obligations in respect of (x)
the Company's 11 1/4% Senior Notes due 2008 and $375,000,000 principal amount
of the 10 3/4% Senior Notes due 2009 (the "Dollar Securities") and Euro
125,000,000 principal amount of the 10 3/4% Senior Notes due 2009 (the "Euro
Securities") and (y) any particular Senior Indebtedness in which the instrument
creating or evidencing the same or the assumption or guarantee thereof (or
related agreements or documents to which the Company is a party) expressly
provides that such Senior Indebtedness shall be "Designated Senior Debt" for
purposes of this Indenture (provided that such instrument, agreement or other
document may place limitations and conditions on the right of such Senior
Indebtedness to exercise the rights of Designated Senior Debt).

     "Distribution Date" shall mean the "Distribution Date" as such term is
defined in the Rights Agreement.

                                      -4-
<PAGE>

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

     "DTC" means The Depository Trust Company, a New York corporation.

     "Effective Failure" has the meaning specified in Section 10.11.

     "Effectiveness Period" has the meaning specified in Section 10.11.

     "Event of Default" has the meaning specified in Section 5.1.

     "Exchange Act" means the United States Securities Exchange Act of 1934 (or
any successor statute), as amended from time to time.

     "Global Security" means a Security that is registered in the Security
Register in the name of a Depositary or a nominee thereof.

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

     "Indenture" means this instrument as originally executed or as it may from
time to time be supplemented or amended by one or more indentures supplemental
hereto entered into pursuant to the applicable provisions hereof, including, for
all purposes of this instrument and any such supplemental indenture, the
provisions of the Trust Indenture Act that are deemed to be a part of and govern
this instrument and any such supplemental indenture, respectively.

     "Initial Purchasers" means Goldman, Sachs & Co., Donaldson, Lufkin &
Jenrette, Securities Corporation and Morgan Stanley & Co., Incorporated.

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

     "Issue Date" means December 8, 1999.

     "Liquidated Damages" has the meaning specified in Section 10.11.

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

     "Non-electing Share" has the meaning specified in Section 12.11.

                                      -5-
<PAGE>

     "Notice of Default" has the meaning specified in Section 5.1.

     "Offer to Purchase" has the meaning specified in Section 14.3

     "Officers' Certificate" means a certificate signed by (i) the Chairman of
the Board, a Vice Chairman of the Board, the Chief Executive Officer, the
President, an Executive Vice President or a Vice President and by (ii) the
principal financial officer, the Treasurer, an Assistant Treasurer, the
Secretary or an Assistant Secretary of the Company, and delivered to the
Trustee.

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

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

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

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

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

               (iv)   Securities converted into Common Stock pursuant to Article
XII;

provided, however, that in determining whether the Holders of the requisite
principal amount of Outstanding Securities are present at a meeting of Holders
of Securities for quorum purposes or have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, Securities owned
by the Company or any other obligor upon the Securities or any Affiliate of the
Company or such other obligor shall be disregarded and deemed not to be
Outstanding, except that, in determining whether the Trustee shall be protected
in relying upon any such determination as to the presence of a quorum or upon
any such request, demand, authorization, direction, notice, consent or waiver,
only Securities which a Responsible Officer of the Trustee has been notified in
writing to be

                                      -6-
<PAGE>

so owned shall be so disregarded. Securities so owned which have been pledged in
good faith may be regarded as Outstanding if the pledgee is not the Company or
any other obligor upon the Securities or any Affiliate of the Company or such
other obligor, and the Trustee shall be protected in relying upon an Officer's
Certificate to such effect.

     "Paying Agent" means any Person authorized by the Company to pay the
principal of or interest on any Securities on behalf of the Company and, except
as otherwise specifically set forth herein, such term shall include the Company
if it shall act as its own Paying Agent. The Company has initially appointed the
Trustee as its Paying Agent pursuant to Section 10.2 hereof.

     "Payment Blockage Notice" has the meaning specified in Section 13.2.

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

     "Place of Conversion" has the meaning specified in Section 3.1.

     "Place of Payment" has the meaning specified in Section 3.1.

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

     "Press Release" shall mean any press release issued by the Issuer and
disseminated through Dow Jones & Company, Inc., Reuters Business News Services,
Bloomberg Business News or other national business news service commonly used by
U.S. businesses in the same line of business as the Company for disseminating
information regarding corporate events.

     "Purchase Agreement" means the Purchase Agreement, dated as of December 2,
1999, between the Company and the Initial Purchasers, as such agreement may be
amended from time to time.

     "Qualified Institutional Buyer" shall mean a "qualified institutional
buyer" as defined in Rule 144A.

     "Record Date" means any Regular Record Date or Special Record Date.

                                      -7-
<PAGE>

     "Record Date Period" means the period from the close of business of any
Regular Record Date next preceding any Interest Payment Date to the opening of
business on such Interest Payment Date.

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

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

     "Registrable Securities" has the meaning specified in Section 10.11.

     "Registration Default" has the meaning specified in Section 10.11.

     "Registration Rights Agreement" means the Registration Rights Agreement,
dated as of December 1, 1999, between the Company and the Initial Purchasers, as
such agreement may be amended from time to time.

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

     "Representative" means the (a) indenture trustee or other trustee, agent or
representative for any Senior Indebtedness or (b) with respect to any Senior
Indebtedness that does not have any such trustee, agent or other representative,
(i) in the case of such Senior Indebtedness issued pursuant to an agreement
providing for voting arrangements as among the holders or owners of such Senior
Indebtedness, any holder or owner of such Senior Indebtedness acting with the
consent of the required persons necessary to bind such holders or owners of such
Senior Indebtedness and (ii) in the case of all other such Senior Indebtedness,
the holder or owner of such Senior Indebtedness.

     "Repurchase Date" has the meaning specified in Section 14.1.

     "Repurchase Price" has the meaning specified in Section 14.1.

     "Responsible Officer", when used with respect to the Trustee, means any
officer within the Corporate Trust Office of the Trustee with direct
responsibility for the administration of this Indenture and also means, with
respect to a particular corporate trust matter, any other officer to whom such
matter is referred because of his knowledge and familiarity with the particular
subject.

     "Restricted Global Security" has the meaning specified in Section 2.1.

                                      -8-
<PAGE>

     "Restricted Securities" means all Securities required pursuant to Section
3.5(3) to bear any Restricted Securities Legend. Such term includes the
Restricted Global Security.

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

     "Restricted Securities Legend" means, collectively, the legends
substantially in the forms of the legends required in the form of Security set
forth in Section 2.2 to be placed upon each Restricted Security.

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

     "Rule 144A Information" has the meaning specified in Section 10.9.

     "Securities" has the meaning ascribed to it in the first paragraph under
the caption "Recitals of the Company".

     "Securities Act" means the United States Securities Act of 1933 (or any
successor statute), as amended from time to time.

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

     "Senior Indebtedness" means the principal of (and premium, if any) and
interest (including all interest accruing subsequent to the commencement of any
bankruptcy or similar proceeding, whether or not a claim for post-petition
interest is allowable as a claim in any such proceeding) rent and end of term
payments payable on, and, to the extent not included in the foregoing, all
amounts payable as fees, costs, expenses, liquidated damages, indemnities,
repurchase and other put obligations and other amounts to the extent accrued or
due, in connection with the following, whether secured or unsecured, due or to
become due, outstanding on the date of this Indenture or thereafter created,
incurred or assumed: (a) indebtedness of the Company evidenced by a credit or
loan agreement, note, bond, debenture or other written obligation, (b) all
obligations of the Company for money borrowed, (c) all obligations of the
Company evidenced by a note or similar instrument given in connection with the
acquisition of any businesses, properties or assets of any kind, (d) obligations
of the Company (i) as lessee under leases required to be capitalized on the
balance sheet of the lessee under generally accepted accounting principles and
(ii) as lessee under other leases for facilities, capital equipment or related
assets, whether or not capitalized, entered into or leased for financing
purposes, (e) all obligations of the Company under interest rate and currency
swaps, caps, floors, collars, hedge agreements, forward contracts or similar
agreements or arrangements, (f) all obligations of the Company with respect to
letters of credit, bankers' acceptances and similar

                                      -9-
<PAGE>

facilities (including reimbursement obligations with respect to the foregoing),
(g) all obligations of the Company issued or assumed as the deferred purchase
price of property or services (but excluding trade accounts payable and accrued
expenses arising in the ordinary course of business), (h) all obligations of the
type referred to in clauses (a) through (g) above of another Person and all
dividends of another Person, the payment of which, in either case, the Company
has assumed or guaranteed, or for which the Company is responsible or liable,
directly or indirectly, jointly or severally, as obligor, guarantor or
otherwise, or which is secured by a lien on the property of the Company, and (i)
renewals, extensions, modifications, replacements, restatements and refundings
of, or any indebtedness or obligation issued in exchange for, any such
indebtedness or obligation described in clauses (a) through (h) of this
paragraph; provided, however, that Senior Indebtedness shall not include the
Securities or any such indebtedness or obligation if the terms of such
indebtedness or obligation (or the terms of the instrument under which, or
pursuant to which it is issued) expressly provide that such indebtedness or
obligation is not superior in right of payment to the Securities.

     "Shelf Registration Statement" has the meaning specified in Section 10.11.

     "Significant Subsidiary" means, with respect to any Person, a Subsidiary of
such Person that would constitute a "significant subsidiary" as such term is
defined under Rule 1-02 of Regulation S-X under the Securities Act and the
Exchange Act.

     "Special Record Date" for the payment of any Defaulted Interest means a
date fixed by the Company pursuant to Section 3.7.

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

     "Subsidiary" means a corporation more than 50% of the outstanding voting
stock of which is owned, directly or indirectly, by the Company or by one or
more other Subsidiaries, or by the Company and one or more other Subsidiaries.
For the purposes of this definition, "voting stock" means stock or other similar
interests in the corporation which ordinarily has or have voting power for the
election of directors, or persons performing similar functions, whether at all
times or only so long as no senior class of stock or other interests has or have
such voting power by reason of any contingency.

     "Successor Security" of any particular Security means every Security issued
after, and evidencing all or a portion of the same debt as that evidenced by,
such particular Security; and, for the purposes of this definition, any Security
authenticated and delivered under Section 3.6 in

                                      -10-
<PAGE>

exchange for or in lieu of a mutilated, destroyed, lost or stolen Security shall
be deemed to evidence the same debt as the mutilated, destroyed, lost or stolen
Security.

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

     "Trading Day" means (i) if the Common Stock is quoted on the Nasdaq
National Market or any other system of automated dissemination of quotations of
securities prices, days on which trades may be effected through such system,
(ii) if the Common Stock is listed or admitted for trading on any national or
regional securities exchange, days on which such national or regional securities
exchange is open for business, or (iii) if the Common Stock is not listed on a
national or regional securities exchange or quoted on the Nasdaq National Market
or any other system of automated dissemination of quotation of securities
prices, days on which the Common Stock is traded regular way in the over-the-
counter market and for which a closing bid and a closing asked price for the
Common Stock are available.

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

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

     "United States" means the United States of America (including the States
and the District of Columbia), its territories, its possessions and other areas
subject to its jurisdiction (its "possessions" including Puerto Rico, the U.S.
Virgin Islands, Guam, American Samoa, Wake Island and the Northern Mariana
Islands).

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

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

SECTION 1.2    Compliance Certificates And Opinions.
               ------------------------------------

     Upon any application or request by the Company to the Trustee to take any
action under any provision of this Indenture, the Company shall furnish to the
Trustee an Officers' Certificate stating

                                      -11-
<PAGE>

that all conditions precedent, if any, provided for in this Indenture relating
to the proposed action have been complied with and an Opinion of Counsel stating
that in the opinion of such counsel all such conditions precedent, if any, have
been complied with, except that in the case of any such application or request
as to which the furnishing of such documents is specifically required by any
provision of this Indenture relating to such particular application or request,
no additional certificate or opinion need be furnished.

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

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

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

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

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

SECTION 1.3    Form of Documents Delivered to The Trustee.
               ------------------------------------------

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

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

                                      -12-
<PAGE>

reasonable care should know, that the certificate or opinion or representations
with respect to such matters are erroneous.

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

SECTION 1.4    Acts of Holders of Securities.
               -----------------------------

          (1)  Any request, demand, authorization, direction, notice, consent,
waiver or other action provided or permitted by this Indenture to be given or
taken by Holders of Securities may be embodied in and evidenced by (A) one or
more instruments of substantially similar tenor signed by such Holders in person
or by an agent or proxy duly appointed in writing by such Holders or (B) the
record of Holders of Securities voting in favor thereof, either in person or by
proxies duly appointed in writing, at any meeting of Holders of Securities duly
called and held in accordance with the provisions of Article IX. Such action
shall become effective when such instrument or instruments or record is
delivered to the Trustee and, where it is hereby expressly required, to the
Company. The Trustee shall promptly deliver to the Company copies of all such
instruments and records delivered to the Trustee. Such instrument or instruments
and records (and the action embodied therein and evidenced thereby) are herein
sometimes referred to as the "Act" of the Holders of Securities signing such
instrument or instruments and so voting at such meeting. Proof of execution of
any such instrument or of a writing appointing any such agent or proxy, or of
the holding by any Person of a Security, shall be sufficient for any purpose of
this Indenture and (subject to Section 6.1) conclusive in favor of the Trustee
and the Company if made in the manner provided in this Section. The record of
any meeting of Holders of Securities shall be proved in the manner provided in
Section 9.6.

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

          (3)  The principal amount and serial number of any Security held by
any Person, and the date of his holding the same, shall be proved by the
Security Register.

          (4)  The fact and date of execution of any such instrument or writing
and the authority of the Person executing the same may also be proved in any
other manner which the Trustee deems sufficient; and the Trustee may in any
instance require further proof with respect to any of the matters referred to in
this Section 1.4.

                                      -13-
<PAGE>

          (5)  The Company may, but shall not be obligated to, set any day as
the record date for the purpose of determining the Holders entitled to give or
take any request, demand, authorization, direction, notice, consent, waiver or
other action, or to vote on any action, authorized or permitted by this
Indenture to be given or taken by Holders. Promptly and in any case not later
than ten days after setting a record date, the Company shall notify the Trustee
and the Holders of such record date. If not set by the Company prior to the
first solicitation of a Holder made by any Person in respect of any such action,
or, in the case of any such vote, prior to such vote, the record date for any
such action or vote shall be the 30th day (or, if later, the date of the most
recent list of Holders required to be provided pursuant to Section 15.1) prior
to such first solicitation or vote, as the case may be. With regard to any
record date, the Holders on such date (or their duly appointed agents or
proxies), and only such Persons, shall be entitled to give or take, or vote on,
the relevant action, whether or not such Holders remain Holders after such
record date. Notwithstanding the foregoing, the Company shall not set a record
date for, and the provisions of this paragraph shall not apply with respect to,
any notice, declaration or direction referred to in the next paragraph. Nothing
in this paragraph shall prevent the Company from setting a new record date for
any action for which a record date has previously been set pursuant to this
paragraph (whereupon the record date previously set shall automatically and with
no action by any Person be canceled and of no effect), nor shall anything in
this paragraph be construed to render ineffective any action taken by Holders of
the requisite principal amount of Outstanding Securities on the date such action
is taken.

          (6)  Upon receipt by the Trustee from any Holder of (i) any notice of
default or breach referred to in Section 5.1(4), if such default or breach has
occurred and is continuing and the Trustee shall not have given such a notice to
the Company, (ii) any declaration of acceleration referred to in Section 5.2, if
an Event of Default has occurred and is continuing and the Trustee shall not
have given such a declaration to the Company, or (iii) any direction referred to
in Section 5.12, if the Trustee shall not have taken the action specified in
such direction, then, with respect to clauses (ii) and (iii), a record date
shall automatically and without any action by the Company or the Trustee be set
for determining the Holders entitled to join in such declaration or direction,
which record date shall be the close of business on the tenth day (or, if such
day is not a Business Day, the first Business Day thereafter) following the day
on which the Trustee receives such declaration or direction, and, with respect
to clause (i), the Trustee may set any day as a record date for the purpose of
determining the Holders entitled to join in such notice of default. Promptly
after such receipt by the Trustee of any such declaration or direction referred
to in clause (ii) or (iii), and promptly after setting any record date with
respect to clause (i), and as soon as practicable thereafter, the Trustee shall
notify the Company and the Holders of any such record date so fixed. The Holders
on such record date (or their duly appointed agents or proxies), and only such
Persons, shall be entitled to join in such notice, declaration or direction,
whether or not such Holders remain Holders after such record date; provided
that, unless such notice, declaration or direction shall have become effective
by virtue of Holders of the requisite principal amount of Securities on such
record date (or their duly

                                      -14-
<PAGE>

appointed agents or proxies) having joined therein on or prior to the 90th day
after such record date, such notice, declaration or direction shall
automatically and without any action by any Person be canceled and of no further
effect. Nothing in this paragraph shall be construed to prevent a Holder (or a
duly appointed agent or proxy thereof) from giving, before or after the
expiration of such 90-day period, a notice, declaration or direction contrary to
or different from, or, after the expiration of such period, identical to, the
notice, declaration or direction to which such record date relates, in which
event a new record date in respect thereof shall be set pursuant to this
paragraph. In addition, nothing in this paragraph shall be construed to render
ineffective any notice, declaration or direction of the type referred to in this
paragraph given at any time to the Trustee and the Company by Holders (or their
duly appointed agents or proxies) of the requisite principal amount of
Securities on the date such notice, declaration or direction is so given.

          (7)  Except as provided in Sections 5.12 and 5.13, any request,
demand, authorization, direction, notice, consent, election, waiver or other Act
of the Holder of any Security shall bind every future Holder of the same
Security and the Holder of every Security issued upon the registration of
transfer thereof or in exchange therefor or in lieu thereof in respect of
anything done, omitted or suffered to be done by the Trustee or the Company in
reliance thereon, whether or not notation of such action is made upon such
Security.

          (8)  The provisions of this Section 1.4 are subject to the provisions
of Section 9.5.

SECTION 1.5    Notices, Etc. to Trustee and Company.
               ------------------------------------

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

          (1)  the Trustee by any Holder of Securities or by the Company shall
be sufficient for every purpose hereunder if made, given, furnished or filed in
writing to or with a Responsible Officer of the Trustee and received at its
Corporate Trust Office, Attention: Corporate Trust Administration (Exodus
Communications, Inc., 4 3/4% Convertible Subordinated Notes due July 15, 2008).

          (2)  the Company by the Trustee or by any Holder of Securities shall
be sufficient for every purpose hereunder (unless otherwise herein expressly
provided) if in writing, mailed, first-class postage prepaid, or telecopied and
confirmed by mail, first-class postage prepaid, or delivered by hand or
overnight courier, addressed to the Company at 2831 Mission College Boulevard,
Santa Clara, California 95054, Attention: General Counsel, or at any other
address previously furnished in writing to the Trustee by the Company.

                                      -15-
<PAGE>

SECTION 1.6    Notice to Holders of Securities; Waiver.
               ---------------------------------------

     Except as otherwise expressly provided herein, where this Indenture
provides for notice to Holders of Securities of any event, such notice shall be
sufficiently given to Holders if in writing and mailed, first-class postage
prepaid or delivered by an overnight delivery service, to each Holder of a
Security affected by such event, at the address of such Holder as it appears in
the Security Register, not earlier than the earliest date and not later than the
latest date prescribed for the giving of such notice.

     Neither the failure to mail such notice, nor any defect in any notice so
mailed, to any particular Holder of a Security shall affect the sufficiency of
such notice with respect to other Holders of Securities. In case by reason of
the suspension of regular mail service or by reason of any other cause it shall
be impracticable to give such notice by mail, then such notification to Holders
of Securities as shall be made with the approval of the Trustee, which approval
shall not be unreasonably withheld, shall constitute a sufficient notification
to such Holders for every purpose hereunder.

     Such notice shall be deemed to have been given when such notice is mailed.

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

SECTION 1.7    Effect of Headings and Table of Contents.
               ----------------------------------------

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

SECTION 1.8    Successors and Assigns.
               ----------------------

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

SECTION 1.9    Separability Clause.
               -------------------

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

                                      -16-
<PAGE>

SECTION 1.10   Benefits of Indenture.
               ---------------------

     Except as provided in the next sentence, nothing in this Indenture or in
the Securities, express or implied, shall give to any Person, other than the
parties hereto and their successors assigns hereunder and the Holders of
Securities, any benefit or legal or equitable right, remedy or claim under this
Indenture. The provisions of Article XIII are intended to be for the benefit of,
and shall be enforceable directly by, the holders of Senior Indebtedness.

SECTION 1.11   Governing Law.
               -------------

     THIS INDENTURE AND THE SECURITIES SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, THE UNITED STATES OF AMERICA,
WITHOUT REGARD TO THE PRINCIPLES OF CONFLICTS OF LAWS.

SECTION 1.12   Legal Holidays.
               --------------

     In any case where any Interest Payment Date, Redemption Date, Repurchase
Date or Stated Maturity of any Security or the last day on which a Holder of a
Security has a right to convert his Security shall not be a Business Day at a
Place of Payment or Place of Conversion, as the case may be, then
(notwithstanding any other provision of this Indenture or of the Securities)
payment of principal of, premium, if any, or interest on, or the payment of the
Repurchase Price (whether the same is payable in cash or in shares of Common
Stock) with respect to, or delivery for conversion of, such Security need not be
made at such Place of Payment or Place of Conversion, as the case may be, on or
by such day, but may be made on or by the next succeeding Business Day at such
Place of Payment or Place of Conversion, as the case may be, with the same force
and effect as if made on the Interest Payment Date, Redemption Date or
Repurchase Date, or at the Stated Maturity or by such last day for conversion;
provided, however, that in the case that payment is made on such succeeding
Business Day, no interest shall accrue on the amount so payable for the period
from and after such Interest Payment Date, Redemption Date, Repurchase Date,
Stated Maturity or last day for conversion, as the case may be.

SECTION 1.13   Conflict With Trust Indenture Act.
               ---------------------------------

     If any provision hereof limits, qualifies or conflicts with a provision of
the Trust Indenture Act that is required under such Act to be a part of and
govern this Indenture, the latter provision shall control. If any provision of
this Indenture modifies or excludes any provision of the Trust Indenture Act
that may be so modified or excluded, the latter provision shall be deemed to
apply to this Indenture as so modified or to be excluded, as the case may be.
Until such time as this Indenture shall be qualified under the Trust Indenture
Act, this Indenture, the Company and the Trustee shall

                                      -17-
<PAGE>

be deemed for all purposes hereof to be subject to and governed by the Trust
Indenture Act to the same extent as would be the case if this Indenture were so
qualified on the date hereof.

                                  ARTICLE II

                                SECURITY FORMS

SECTION 2.1    Form Generally.
               --------------

     The Securities shall be in substantially the form set forth in this
Article, with such appropriate insertions, omissions, substitutions and other
variations as are required or permitted by this Indenture, and may have such
letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with the rules of any
securities exchange, the Internal Revenue Code of 1986, as amended, and
regulations thereunder (the "Code"), or as may, consistent herewith, be
determined by the officers executing such Securities, as evidenced by their
execution thereof. All Securities shall be in fully registered form.

     The Trustee's certificates of authentication shall be in substantially the
form set forth in Section 2.3.

     Conversion notices shall be in substantially the form set forth in Section
2.4.

     Repurchase notices shall be substantially in the form set forth in Section
2.2.

     The Securities shall be printed, lithographed, typewritten or engraved or
produced by any combination of these methods or may be produced in any other
manner permitted by the rules of any automated quotation system or securities
exchange (including on steel engraved borders if so required by any securities
exchange upon which the Securities may be listed) on which the Securities may be
quoted or listed, as the case may be, all as determined by the officers
executing such Securities, as evidenced by their execution thereof.

     Upon their original issuance, Securities issued as contemplated by the
Purchase Agreement to Qualified Institutional Buyers in reliance on Rule 144A
shall be issued in the form of one or more Global Securities in definitive,
fully registered form without interest coupons and bearing the Restricted
Securities Legend. Such Global Security shall be registered in the name of DTC,
as Depositary, or its nominee and deposited with the Trustee, as custodian for
DTC, for credit by DTC to the respective accounts of beneficial owners of the
Securities represented thereby (or such other accounts as they may direct). Such
Global Security, together with its Successor Securities which are Global
Securities, are collectively herein called the "Restricted Global Security".

                                      -18-
<PAGE>

SECTION 2.2    Form of Security.
               ----------------

                                [FORM OF FACE]

     [THE FOLLOWING LEGEND SHALL APPEAR ON THE FACE OF EACH RESTRICTED SECURITY:

     THIS SECURITY AND ANY COMMON STOCK ISSUABLE UPON THE CONVERSION OF THIS
SECURITY HAVE NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS
AMENDED (THE "SECURITIES ACT"), AND MAY NOT BE SOLD OR OTHERWISE TRANSFERRED IN
THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH
PURCHASER OF THIS SECURITY THAT IS A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED
IN RULE 144A UNDER THE SECURITIES ACT) IS HEREBY NOTIFIED THAT THE SELLER OF
THIS SECURITY MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5
OF THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER.

     THIS SECURITY AND ANY SHARES OF COMMON STOCK ISSUABLE UPON ITS CONVERSION
MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT (I) TO A
PERSON WHO THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER
ACQUIRING FOR ITS OWN ACCOUNT OR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER
IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, (II) TO AN INSTITUTION
THAT IS AN "ACCREDITED INVESTOR" WITHIN THE MEANING OF RULE 501(a)(1), (2), (3)
OR (7) UNDER THE SECURITIES ACT IN A TRANSACTION EXEMPT FROM THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT, (III) PURSUANT TO THE EXEMPTION FROM
REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER (IF
AVAILABLE), OR (IV) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE
SECURITIES ACT, AND IN EACH OF CASES (I) THROUGH (IV) IN ACCORDANCE WITH ALL
APPLICABLE SECURITIES LAWS OF THE STATES AND OTHER JURISDICTION OF THE UNITED
STATES.

     THIS SECURITY, ANY SHARES OF COMMON STOCK ISSUABLE UPON ITS CONVERSION AND
ANY RELATED DOCUMENTATION MAY BE AMENDED OR SUPPLEMENTED FROM TIME TO TIME TO
MODIFY THE RESTRICTIONS ON RESALES AND OTHER TRANSFERS OF THIS SECURITY AND ANY
SUCH SHARES TO REFLECT ANY CHANGE IN APPLICABLE LAW OR REGULATION (OR THE
INTERPRETATION THEREOF) OR IN PRACTICES RELATING TO THE RESALE OR

                                      -19-
<PAGE>

TRANSFER OF RESTRICTED SECURITIES GENERALLY. THE HOLDER OF THIS SECURITY AND ANY
SUCH SHARES SHALL BE DEEMED BY THE ACCEPTANCE OF THIS SECURITY AND ANY SUCH
SHARES TO HAVE AGREED TO ANY SUCH AMENDMENT OR SUPPLEMENT.]

     [THE FOLLOWING LEGEND SHALL APPEAR ON THE FACE OF EACH GLOBAL SECURITY:

     THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF THE DEPOSITARY OR A
NOMINEE OF THE DEPOSITARY, WHICH MAY BE TREATED BY THE COMPANY, THE TRUSTEE AND
ANY AGENT THEREOF AS OWNER AND HOLDER OF THIS SECURITY FOR ALL PURPOSES.

     UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE COMPANY OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO
CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

     UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR SECURITIES IN
DEFINITIVE REGISTERED FORM IN THE LIMITED CIRCUMSTANCES REFERRED TO IN THE
INDENTURE, THIS GLOBAL SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE
DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO
THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY
SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR
DEPOSITARY.]

                                      -20-
<PAGE>

                          EXODUS COMMUNICATIONS, INC.

            4 3/4% CONVERTIBLE SUBORDINATED NOTE DUE JULY 15, 2008

     No._________                                                $ __________
     CUSIP NO. ___________

          EXODUS COMMUNICATIONS, INC., a corporation duly organized and existing
under the laws of the State of Delaware (herein called the "Company", which term
includes any successor Person under the Indenture referred to on the reverse
hereof), for value received, hereby promises to pay to _________________, or
registered assigns, the principal sum of ___________ United States Dollars
($_______) [if this Security is a Global Security, then insert -- (which
principal amount may from time to time be increased or decreased to such other
principal amounts (which, taken together with the principal amounts of all other
Outstanding Securities, shall not exceed $500,000,000 in the aggregate at any
time) by adjustments made on the records of the Trustee hereinafter referred to
in accordance with the Indenture)] on July 15, 2008 and to pay interest thereon,
from December 8, 1999, or from the most recent Interest Payment Date (as defined
below) to which interest has been paid or duly provided for, semi-annually in
arrears on January 15 and July 15 in each year (each, an "Interest Payment
Date"), commencing July 15, 2000, at the rate of 4 3/4% per annum, until the
principal hereof is due, and at the rate of 6 3/4% per annum on any overdue
principal and premium, if any, and, to the extent permitted by law, on any
overdue interest. The interest so payable, and punctually paid or duly provided
for, on any Interest Payment Date will, as provided in the Indenture, be paid to
the Person in whose name this Security (or one or more Predecessor Securities)
is registered at the close of business on the Regular Record Date for such
interest, which shall be the January 1 or July 1 (whether or not a Business
Day), as the case may be, next preceding such Interest Payment Date. Except as
otherwise provided in the Indenture, any such interest not so punctually paid or
duly provided for will forthwith cease to be payable to the Holder on such
Regular Record Date and may either be paid to the Person in whose name this
Security (or one or more Predecessor Securities) is registered at the close of
business on a Special Record Date for the payment of such Defaulted Interest to
be fixed by the Company, notice whereof shall be given to Holders of Securities
not less than 10 days prior to the Special Record Date, or be paid at any time
in any other lawful manner not inconsistent with the requirements of any
automated quotation system or securities exchange on which the Securities may be
quoted or listed, and upon such notice as may be required by such exchange, all
as more fully provided in the Indenture. Payments of principal shall be made
upon the surrender of this Security at the option of the Holder at the Corporate
Trust Office of the Trustee, or at such other office or agency of the Company as

                                      -21-
<PAGE>

may be designated by it for such purpose in the Borough of Manhattan, The City
of New York, in such coin or currency of the United States of America as at the
time of payment shall be legal tender for the payment of public and private
debts, or at such other offices or agencies as the Company may designate, by
United States Dollar check drawn on, or transfer to, a United States Dollar
account (such a transfer to be made only to a Holder of an aggregate principal
amount of Securities in excess of $2,000,000, and only if such Holder shall have
furnished wire instructions in writing to the Trustee no later than 15 days
prior to the relevant payment date). Payment of interest on this Security may be
made by United States Dollar check mailed to the address of the Person entitled
thereto as such address shall appear in the Security Register, or, upon written
application by the Holder to the Security Registrar setting forth wire
instructions not later than the relevant Record Date, by transfer to a United
States Dollar account (such a transfer to be made only to a Holder of an
aggregate principal amount of Securities in excess of $2,000,000 and only if
such Holder shall have furnished wire instructions in writing to the Trustee no
later than 15 days prior to the relevant payment date).

         Except as specifically provided herein and in the Indenture, the
Company shall not be required to make any payment with respect to any tax,
assessment or other governmental charge imposed by any government or any
political subdivision or taxing authority thereof or therein.

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

         Unless the certificate of authentication hereon has been executed by
the Trustee referred to on the reverse hereof or an Authenticating Agent by the
manual signature of one of their respective authorized signatories, this
Security shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.

                                      -22-
<PAGE>

     IN WITNESS WHEREOF, the Company has caused this Security to be duly
executed.

                                                  EXODUS COMMUNICATIONS, INC.

                                                  By:___________________________
                                                  Name:
                                                  Title:

                                                  Attest:_______________________
                                                  Name:
                                                  Title:

     CERTIFICATE OF AUTHENTICATION

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

     Dated:  December 8, 1999

     CHASE MANHATTAN BANK AND TRUST
     COMPANY, NATIONAL ASSOCIATION,
     as Trustee

     By: ________________________________
     Authorized Signatory

                                      -23-
<PAGE>

                               [FORM OF REVERSE]

         This Security is one of a duly authorized issue of securities of the
Company designated as its "4 3/4% Convertible Subordinated Notes due July 15,
2008" (herein called the "Securities"), limited in aggregate principal amount to
$500,000,000, issued and to be issued under an Indenture, dated as of December
1, 1999 (herein called the "Indenture"), between the Company and Chase Manhattan
Bank and Trust Company, National Association, as Trustee (herein called the
"Trustee", which term includes any successor trustee under the Indenture), to
which Indenture and all indentures supplemental thereto reference is hereby made
for a statement of the respective rights, limitations of rights, duties and
immunities thereunder of the Company, the Trustee, the holders of Senior
Indebtedness and the Holders of the Securities and of the terms upon which the
Securities are, and are to be, authenticated and delivered. As provided in the
Indenture and subject to certain limitations therein set forth, Securities are
exchangeable for a like aggregate principal amount of Securities of any
authorized denominations as requested by the Holder surrendering the same upon
surrender of the Security or Securities to be exchanged, at the Corporate Trust
Office of the Trustee. The Trustee upon such surrender by the Holder will issue
the new Securities in the requested denominations.

         No sinking fund is provided for the Securities. The Securities will not
be subject to redemption prior to January 20, 2002 and will be redeemable on and
after that date at the option of the Company, in whole or in part, upon not less
than 30 nor more than 60 days notice to the Holders prior to the Redemption Date
at the Redemption Prices (expressed as percentages of the principal amount) set
forth below; provided, however, that the Securities will not be redeemable at
the option of the Company on or after January 20, 2002 and before January 15,
2004 unless the last reported bid price for the Common Stock equals or exceeds
140% of the conversion price for at least 20 trading days within a period of 30
consecutive trading days ending within five trading days of the call for
redemption.

         The following table sets forth the Redemption Prices (expressed as
percentages of the principal amount) if such Security is redeemed during the 12-
month periods beginning on January 15 of the years indicated below (other than
2002 which period will be from January 20, 2002 to January 14, 2003 and 2008
which period will be from January 15, 2008 through July 14, 2008):

                      YEAR                            REDEMPTION PRICE
                      ----                            ----------------
                      2002                                    103.632%
                      2003                                    103.074%
                      2004                                    102.515%
                      2005                                    101.956%
                      2006                                    101.397%
                      2007                                    100.838%
                      2008                                    100.279%

                                      -24-
<PAGE>

and thereafter at a Redemption Price equal to 100% of the principal amount,
together, in each case, with accrued interest to the Redemption Date; provided,
however, that interest installments on Securities whose Stated Maturity is on or
prior to such Redemption Date will be payable to the Holders of such Securities,
or one or more Predecessor Securities, of record at the close of business on the
relevant Record Dates referred to on the face hereof, all as provided in the
Indenture.

         In the event of a redemption of the Securities, the Company will not be
required (a) to register the transfer or exchange of Securities for a period of
15 days immediately preceding the date notice is given identifying the serial
numbers of the Securities called for such redemption or (b) to register the
transfer or exchange of any Security, or portion thereof, called for redemption.

         In any case where the due date for the payment of the principal of,
premium, if any, interest, or Liquidated Damages on any Security or the last day
on which a Holder of a Security has a right to convert his Security shall be, at
any Place of Payment or Place of Conversion as the case may be, a day on which
banking institutions at such Place of Payment or Place of Conversion are
authorized or obligated by law or executive order to close, then payment of
principal, premium, if any, interest, or Liquidated Damages, or delivery for
conversion of such Security need not be made on or by such date at such place
but may be made on or by the next succeeding day at such place which is not a
day on which banking institutions are authorized or obligated by law or
executive order to close, with the same force and effect as if made on the date
for such payment or the date fixed for redemption or repurchase, or by such last
day for conversion, and no interest shall accrue on the amount so payable for
the period after such date.

         Subject to and upon compliance with the provisions of the Indenture,
the Holder of this Security is entitled, at his option, at any time following
the initial issuance date of the Securities and on or before the close of
business on the date of Maturity, or in case this Security or a portion hereof
is called for redemption or the Holder hereof has exercised his right to require
the Company to repurchase this Security or such portion hereof, then in respect
of this Security until and including, but (unless the Company defaults in making
the payment due upon redemption or repurchase, as the case may be) not after,
the close of business on the Redemption Date or the Repurchase Date, as the case
may be, to convert this Security (or any portion of the principal amount hereof
that is an integral multiple of $1,000, provided that the unconverted portion of
such principal amount is $1,000 or any integral multiple of $1,000 in excess
thereof) into fully paid and nonassessable shares of Common Stock of the Company
at an initial Conversion Rate of 7.1017 shares of Common Stock for each $1,000
principal amount of Securities (or at the current adjusted Conversion Rate if an
adjustment has been made as provided in the Indenture) by surrender of this
Security, duly endorsed or assigned to the Company or in blank, with the
conversion notice hereon duly executed and, in case such surrender shall be made
during the period from the close of business on any Regular Record Date next
preceding any Interest Payment Date to the opening of business on such Interest
Payment Date (except if this Security or portion thereof has been called for
redemption on a Redemption Date

                                      -25-
<PAGE>

during the period from such Regular Record Date through the date that is three
Business Days following such Interest Payment Date), also accompanied by payment
in New York Clearing House or other funds acceptable to the Company of an amount
equal to the interest payable on such Interest Payment Date on the principal
amount of this Security then being converted, to the Company at the Corporate
Trust Office of the Trustee, or at such other office or agency of the Company,
subject to any laws or regulations applicable thereto and subject to the right
of the Company to terminate the appointment of any Conversion Agent (as defined
below) as may be designated by it for such purpose in the Borough of Manhattan,
The City of New York, or at such other offices or agencies as the Company may
designate (each a "Conversion Agent"). Subject, in the case of a conversion
after the close of business on the Regular Record Date next preceding any
Interest Payment Date and on or before the close of business on such Interest
Payment Date, to the right of the Holder of this Security (or any Predecessor
Security of record as of such Regular Record Date) to receive the related
installment of interest to the extent and under the circumstances provided in
the Indenture, no cash payment or adjustment is to be made on conversion for
interest accrued hereon from the Interest Payment Date next preceding the day of
conversion, or for dividends on the Common Stock issued on conversion hereof.
The Company shall thereafter deliver to the Holder the fixed number of shares of
Common Stock (together with any cash adjustment, as provided in the Indenture)
into which this Security is convertible and such delivery will be deemed to
satisfy the Company's obligation to pay the principal amount of this Security.
No fractions of shares or scrip representing fractions of shares will be issued
on conversion, but instead of any fractional interest (calculated to the nearest
1/100th of a share) the Company shall pay a cash adjustment as provided in the
Indenture. The Conversion Rate is subject to adjustment as provided in the
Indenture. In addition, the Indenture provides that in case of certain
consolidations or mergers to which the Company is a party (other than a
consolidation or merger that does not result in any reclassification,
conversion, exchange or cancellation of the Common Stock) or the conveyance,
transfer, sale or lease of all or substantially all of the property and assets
of the Company, the Indenture shall be amended, without the consent of any
Holders of Securities, so that this Security, if then Outstanding, will be
convertible thereafter, during the period this Security shall be convertible as
specified above, only into the kind and amount of securities, cash and other
property receivable upon such consolidation, merger, conveyance, transfer, sale
or lease by a holder of the number of shares of Common Stock of the Company into
which this Security could have been converted immediately prior to such
consolidation, merger, conveyance, transfer, sale or lease (assuming such holder
of Common Stock is not a Constituent Person or an Affiliate of a Constituent
Person, failed to exercise any rights of election and received per share the
kind and amount received per share by a plurality of Non-electing Shares). No
adjustment in the Conversion Rate will be made until such adjustment would
require an increase or decrease of at least one percent of such rate, provided
that any adjustment that would otherwise be made will be carried forward and
taken into account in the computation of any subsequent adjustment.

                                      -26-
<PAGE>

         If this Security is a Registrable Security (as defined in this
Indenture), then the Holder of this Security [if this security is a global
security, then insert -- (including any Person that has a beneficial interest in
this Security)] and the Common Stock of the Company issuable upon conversion
hereof is entitled to the benefits of the Registration Rights Agreement, dated
as of December 1, 1999 (the "Registration Rights Agreement"), between the
Company and the Initial Purchasers, as such agreement may be amended from time
to time. Pursuant to the Registration Rights Agreement, the Company has agreed
for the benefit of the Holders from time to time of the Registrable Securities
that it will, at its expense, (a) within 90 days after the Issue Date file a
shelf registration statement (the "Shelf Registration Statement") with the
Commission with respect to resales of the Registrable Securities, (b) use all
reasonable efforts to cause such Shelf Registration Statement to be declared
effective by the Commission within 180 days after the Issue Date of the
Securities, provided, however, that the Company may, upon written notice to all
the Holders, postpone having the Shelf Registration Statement declared effective
for a reasonable period not to exceed 90 days if the Company possesses material
non-public information, the disclosure of which would have a material adverse
effect on the Company and its subsidiaries taken as a whole, and (c) use all
reasonable efforts to maintain such Shelf Registration Statement effective under
the Securities Act of 1933, as amended, until the second annual anniversary of
the date it is declared effective or such earlier date as is provided in the
Registration Rights Agreement (the "Effectiveness Period"). The Company will be
permitted to suspend the use of the prospectus which is part of the Shelf
Registration Statement during certain periods of time as provided in the
Registration Rights Agreement.

         If (i) on or prior to 90 days following the Issue Date, a Shelf
Registration Statement has not been filed with the Commission, or (ii) on or
prior to the 180th day following the Issue Date, such Shelf Registration
Statement is not declared effective (each, a "Registration Default"), additional
interest ("Liquidated Damages") will accrue on this Restricted Security from and
including the day following such Registration Default to but excluding the day
on which such Registration Default has been cured. Liquidated Damages will be
paid semi-annually in arrears, with the first semi-annual payment due on the
first Interest Payment Date, as applicable, in respect of the Restricted
Securities following the date on which such Liquidated Damages begin to accrue,
and will accrue at a rate per annum equal to an additional one-quarter of one
percent (0.25%) of the principal amount of the Restricted Securities to and
including the 90th day following such Registration Default and at a rate per
annum equal to one-half of one percent (0.50%) thereof from and after the 91st
day following such Registration Default. Pursuant to the Registration Rights
Agreement, in the event that the Shelf Registration Statement ceases to be
effective (or the Holders of Registrable Securities are otherwise prevented or
restricted by the Company from effecting sales pursuant thereto) (an "Effective
Failure") during the Effectiveness Period for more than 45 days, whether or not
consecutive, during any 90 day period, or for more than 90 days, whether or not
consecutive, during any 12-month period, then the interest rate borne by the
Restricted Securities shall increase by an additional

                                      -27-
<PAGE>

one-half of one percent (0.50%) per annum from the 46th day of the applicable 90
day period or the 91/st/ day of the applicable 12-month period, as the case may
be, until such time as the Effective Failure is cured.

         Whenever in this Security there is a reference, in any context, to the
payment of the principal of, premium, if any, or interest on, or in respect of,
any Security, such mention shall be deemed to include mention of the payment of
Liquidated Damages payable as described in the preceding paragraph to the extent
that, in such context, Liquidated Damages are, were or would be payable in
respect of such Security and express mention of the payment of Liquidated
Damages (if applicable) in any provisions of this Security shall not be
construed as excluding Liquidated Damages in those provisions of this Security
where such express mention is not made.

         [If this Security is a Registrable Security and the Holder of this
Security [if this security is a global security, then insert -- (including any
Person that has a beneficial interest in this Security)] elects to sell this
Security pursuant to the Shelf Registration Statement then, by its acceptance
hereof, such Holder of this Security agrees to be bound by the terms of the
Registration Rights Agreement relating to the Registrable Securities which are
the subject of such election.]

         If a Change in Control occurs, the Holder of this Security, at the
Holder's option, shall have the right, in accordance with the provisions of the
Indenture, to require the Company to repurchase this Security (or any portion of
the principal amount hereof that is an integral multiple of $1,000 for cash at a
Repurchase Price equal to 100% of the principal amount thereof plus interest
accrued to the Repurchase Date. At the option of the Company, the Repurchase
Price may be paid in cash or, subject to the conditions provided in the
Indenture, by delivery of shares of Common Stock having a fair market value
equal to the Repurchase Price. For purposes of this paragraph, the fair market
value of shares of Common Stock shall be determined by the Company and shall be
equal to 95% of the average of the Closing Prices Per Share for the five
consecutive Trading Days immediately preceding and including the third Trading
Day prior to the Repurchase Date. Whenever in this Security there is a
reference, in any context, to the principal of any Security as of any time, such
reference shall be deemed to include reference to the Repurchase Price payable
in respect of such Security to the extent that such Repurchase Price is, was or
would be so payable at such time, and express mention of the Repurchase Price in
any provision of this Security shall not be construed as excluding the
Repurchase Price so payable in those provisions of this Security when such
express mention is not made; provided, however, that, for the purposes of the
second succeeding paragraph, such reference shall be deemed to include reference
to the Repurchase Price only to the extent the Repurchase Price is payable in
cash.

        [The following paragraph shall appear in each Global Security:

                                      -28-
<PAGE>

         In the event of a deposit or withdrawal of an interest in this
Security, including an exchange, transfer, redemption, repurchase or conversion
of this Security in part only, the Trustee, as custodian of the Depositary,
shall make an adjustment on its records to reflect such deposit or withdrawal in
accordance with the Applicable Procedures.]

         [The following paragraph shall appear in each Security that is not a
Global Security:

         In the event of redemption, repurchase or conversion of this Security
in part only, a new Security or Securities for the unredeemed, unrepurchased or
unconverted portion hereof will be issued in the name of the Holder hereof.]

         The indebtedness evidenced by this Security is, to the extent and in
the manner provided in the Indenture, subordinate and subject in right of
payment to the prior payment in full of all Senior Indebtedness of the Company,
and this Security is issued subject to such provisions of the Indenture with
respect thereto. Each Holder of this Security, by accepting the same, (a) agrees
to and shall be bound by such provisions, (b) authorizes and directs the Trustee
on his behalf to take such action as may be necessary or appropriate to
effectuate the subordination so provided and (c) appoints the Trustee his
attorney-in-fact for any and all such purposes.

         If an Event of Default shall occur and be continuing, the principal of
all the Securities, together with accrued interest to the date of declaration,
may be declared due and payable in the manner and with the effect provided in
the Indenture. Upon payment (i) of the amount of principal so declared due and
payable, together with accrued interest to the date of declaration, and (ii) of
interest on any overdue principal and, to the extent permitted by applicable
law, overdue interest, all of the Company's obligations in respect of the
payment of the principal of and interest on the Securities shall terminate.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities under the Indenture at
any time by the Company and the Trustee with either (a) the written consent of
the Holders of not less than a majority in principal amount of the Securities at
the time Outstanding, or (b) by the adoption of a resolution, at a meeting of
Holders of the Outstanding Securities at which a quorum is present, by the
Holders of at least 66-2/3% in aggregate principal amount of the Outstanding
Securities represented and entitled to vote at such meeting. The Indenture also
contains provisions permitting the Holders of specified percentages in principal
amount of the Securities at the time Outstanding, on behalf of the Holders of
all the Securities, to waive compliance by the Company with certain provisions
of the Indenture and certain past defaults under the Indenture and their
consequences. Any such consent or waiver by the Holder of this Security shall be
conclusive and binding upon such Holder and upon all future Holders of this
Security and of any

                                      -29-
<PAGE>

Security issued in exchange therefore or in lieu hereof whether or not notation
of such consent or waiver is made upon this Security or such other Security.

         As provided in and subject to the provisions of the Indenture, the
Holder of this Security shall not have the right to institute any proceeding
with respect to the Indenture or for the appointment of a receiver or trustee or
for any other remedy thereunder, unless such Holder shall have previously given
the Trustee written notice of a continuing Event of Default, the Holders of not
less than 25% in principal amount of the Outstanding Securities shall have made
written request to the Trustee to institute proceedings in respect of such Event
of Default as Trustee and offered the Trustee reasonable indemnity and the
Trustee shall not have received from the Holders of a majority in principal
amount of the Securities Outstanding a direction inconsistent with such request,
and shall have failed to institute any such proceeding, for 60 days after
receipt of such notice, request and offer of indemnity. The foregoing shall not
apply to any suit instituted by the Holder of this Security for the enforcement
of any payment of principal hereof, premiums if any, or interest (including
Liquidated Damages) hereon on or after the respective due dates expressed herein
or for the enforcement of the right to convert this Security as provided in the
Indenture.

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

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Security is registrable on the Security Register
upon surrender of this Security for registration of transfer at the Corporate
Trust Office of the Trustee or at such other office or agency of the Company as
may be designated by it for such purpose in the Borough of Manhattan, The City
of New York (which shall initially be an office or agency of the Trustee), or at
such other offices or agencies as the Company may designate, duly endorsed by,
or accompanied by a written instrument of transfer in form satisfactory to the
Company and the Security Registrar duly executed by, the Holder thereof or his
attorney duly authorized in writing, and thereupon one or more new Securities,
of authorized denominations and for the same aggregate principal amount, will be
issued to the designated transferee or transferees by the Registrar. No service
charge shall be made for any such registration of transfer or exchange, but the
Company may require payment of a sum sufficient to recover any tax or other
governmental charge payable in connection therewith.

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

                                      -30-
<PAGE>

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

     THE INDENTURE AND THIS SECURITY SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, UNITED STATES OF AMERICA,
WITHOUT REGARD TO THE PRINCIPLES OF CONFLICTS OF LAWS.

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

                                      -31-
<PAGE>

                                  ABBREVIATIONS

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

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

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

                                      -32-
<PAGE>

                   ELECTION OF HOLDER TO REQUIRE REPURCHASE

     (1)  Pursuant to Article 14.1 of the Indenture, the undersigned hereby
elects to have this Security repurchased by the Company.

     (2)  The undersigned hereby directs the Trustee or the Company to pay it or
______________ an amount in cash or, at the Company's election, Common Stock
valued as set forth in the Indenture, equal to 100% of the principal amount to
be repurchased (as set forth below), plus interest accrued to the Repurchase
Date, as provided in the Indenture.

Dated:

Signature(s)

Signature(s) must be guaranteed by an
Eligible Guarantor Institution with
membership in an approved signature
guarantee program pursuant to Rule 17Ad-15
under the Securities Exchange Act of 1934.

Signature Guaranteed

Principal amount to be repurchased (at least
$5,000 or an integral multiple of $1,000
in excess thereof):  ___________________

Remaining principal amount following such
repurchase (not less than $1,000):

______________

NOTICE:  The signature to the foregoing Election must correspond to the Name as
written upon the face of this Security in every particular, without alteration
or any change whatsoever.

SECTION 2.3    Form of Certificate of Authentication. The Trustee's certificate
               -------------------------------------
of authentication shall be in substantially the following form:

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

                                      -33-
<PAGE>

     Dated:________________

     CHASE MANHATTAN BANK AND TRUST COMPANY,
     NATIONAL ASSOCIATION, as Trustee

     By:___________________________________
                Authorized Signatory

SECTION 2.4    Form of Conversion Notice.  CONVERSION NOTICE
               -------------------------

     The undersigned Holder of this Security hereby irrevocably exercises the
option to convert this Security, or any portion of the principal amount hereof
(which is $1,000 or an integral multiple of $1,000 in excess thereof, provided
that the unconverted portion of such principal amount is $1,000 or any integral
multiple of $1,000 in excess thereof) below designated, into shares of Common
Stock in accordance with the terms of the Indenture referred to in this
Security, and directs that such shares, together with a check in payment for any
fractional share and any Securities representing any unconverted principal
amount hereof, be delivered to and be registered in the name of the undersigned
unless a different name has been indicated below. If shares of Common Stock or
Securities are to be registered in the name of a Person other than the
undersigned, (a) the undersigned will pay all transfer taxes payable with
respect thereto and (b) signature(s) must be guaranteed by an Eligible Guarantor
Institution with membership in an approved signature guarantee program pursuant
to Rule 17Ad-15 under the Securities Exchange Act of 1934. Any amount required
to be paid by the undersigned on account of interest accompanies this Security.

Dated:____________                                  ----------------------------
                                                             Signature(s)

If shares or Securities are to be
registered in the name of a Person
other than the Holder, please print
such Person's name and address:

(Name)

                                      -34-
<PAGE>

(Address)

Social Security or other Identification
Number, if any

          [Signature Guaranteed]

If only a portion of the Securities is to be converted, please indicate:

1.   Principal amount to be converted:  $ ___________

2.   Principal amount and denomination of
     Securities representing unconverted
     principal amount to be issued:

     Amount:  $___________      Denominations:  $____________

($1,000 or any integral multiple of $1,000 in excess thereof, provided that the
unconverted portion of such principal amount is $1,000 or any integral multiple
of $1,000 in excess thereof)

                                      -35-
<PAGE>

SECTION 2.5    Form of Assignment.  For value received ________________ hereby
               ------------------
sell(s), assign(s) and transfer(s) unto ________________ (Please insert social
security or other identifying number of assignee) the within Security, and
hereby irrevocably constitutes and appoints ____________________as attorney to
transfer the said Security on the books of the Company, with full power of
substitution in the premises.

     Dated:____________

                                  Signature(s)

                                  Signature(s) must be guaranteed by an Eligible
                                  Guarantor Institution with membership in an
                                  approved signature guarantee program pursuant
                                  to Rule 17Ad - 15 under the Securities
                                  Exchange Act of 1934.

                                  Signature Guarantee

                                      -36-
<PAGE>

                                  ARTICLE III

                                THE SECURITIES

SECTION 3.1    Title and Terms.
               ---------------

     The aggregate principal amount of Securities which may be authenticated and
delivered under this Indenture is limited to $500,000,000, except for Securities
authenticated and delivered pursuant to Section 3.4, 3.5, 3.6, 8.5, 11.7, 12.2
or 14.3(5) in exchange for, or in lieu of, other Securities previously
authenticated and delivered under this Indenture.

     The Securities shall be known and designated as the "4 3/4% Convertible
Subordinated Notes due July 15, 2008 of the Company. Their Stated Maturity shall
be July 15, 2008 and they shall bear interest on their principal amount from
December 8, 1999, payable semi-annually in arrears on January 15 and July 15 in
each year, commencing July 15, 2000, at the rate of 4 3/4% per annum until the
principal thereof is due and at the rate of 6 3/4% per annum on any overdue
principal and, to the extent permitted by law, on any overdue interest;
provided, however, that payments shall only be made on a Business Day as
provided in Section 1.12.

     The principal of, premium, if any, and interest on the Securities shall be
payable as provided in the form of Securities set forth in Section 2.2, and the
Repurchase Price, whether payable in cash or in shares of Common Stock, shall be
payable at such places as are identified in the Offer to Purchase given pursuant
to Section 14.3 (any city in which any Paying Agent is located being herein
called a "Place of Payment").

     The Registrable Securities are entitled to the benefits of a Registration
Rights Agreement as provided by Section 10.11 and in the form of Security set
forth in Section 2.2. The Securities are entitled to the payment of Liquidated
Damages as provided by Section 10.11.

     The Securities shall be redeemable at the option of the Company at any time
on or after January 20, 2002, in whole or in part, subject to the conditions and
as otherwise provided in Article XI and in the form of Security set forth in
Section 2.2.

     The Securities shall be convertible as provided in Article XII (any city in
which any Conversion Agent is located being herein called a "Place of
Conversion").

     The Securities shall be subordinated in right of payment to Senior
Indebtedness of the Company as provided in Article XIII.

                                      -37-
<PAGE>

     The Securities shall be subject to repurchase by the Company at the option
of the Holders as provided in Article XIV.

SECTION 3.2    Denominations.
               -------------

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

SECTION 3.3    Execution, Authentication, Delivery and Dating.
               ----------------------------------------------

     The Securities shall be executed on behalf of the Company by its Chairman
of the Board, its Vice Chairman of the Board, its Chief Executive Officer, its
President, one of its Executive Vice Presidents or one of its Vice Presidents,
and attested by its Chief Financial Officer, Secretary or one of its Assistant
Secretaries. Any such signature may be manual or facsimile.

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

     At any time and from time to time after the execution and delivery of this
Indenture, the Company may deliver Securities executed by the Company to the
Trustee or to its order for authentication, together with a Company Order for
the authentication and delivery of such Securities, and the Trustee in
accordance with such Company Order shall authenticate and make available for
delivery such Securities as in this Indenture provided.

     Each Security shall be dated the date of its authentication.

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

SECTION 3.4    Global Securities; Non-global Securities; Book-entry Provisions.
               ---------------------------------------------------------------
(1) Global Securities

               (i)   Each Global Security authenticated under this Indenture
shall be registered in the name of the Depositary designated by the Company for
such Global Security or a nominee thereof and delivered to such Depositary or a
nominee thereof or custodian therefor, and each such Global Security shall
constitute a single Security for all purposes of this Indenture.

                                      -38-
<PAGE>

               (ii)  Except for exchanges of Global Securities for definitive,
non-Global Securities at the sole discretion of the Company, no Global Security
may be exchanged in whole or in part for Securities registered, and no transfer
of a Global Security in whole or in part may be registered, in the name of any
Person other than the Depositary for such Global Security or a nominee thereof
unless (A) such Depositary (i) has notified the Company that it is unwilling or
unable to continue as Depositary for such Global Security or (ii) has ceased to
be a clearing agency registered as such under the Exchange Act or announces an
intention permanently to cease business or does in fact do so, and a successor
Depositary is not appointed by the Company within 90 days after it receives
notice or becomes aware of such ineligibility, or (B) there shall have occurred
and be continuing an Event of Default with respect to such Global Security. In
such event, the Company will execute, and the Trustee, upon receipt of an
Officers' Certificate directing the authentication and delivery of Securities,
will authenticate and deliver, Securities, in any authorized denominations in an
aggregate principal amount equal to the principal amount of such Global Security
in exchange for such Global Security.

               (iii) If any Global Security is to be exchanged for other
Securities or canceled in whole, it shall be surrendered by or on behalf of the
Depositary or its nominee to the Trustee, as Security Registrar, for exchange or
cancellation, as provided in this Article III. If any Global Security is to be
exchanged for other Securities or canceled in part, or if another Security is to
be exchanged in whole or in part for a beneficial interest in any Global
Security, in each case, as provided in Section 3.5, then either (A) such Global
Security shall be so surrendered for exchange or cancellation, as provided in
this Article III, or (B) the principal amount thereof shall be reduced or
increased by an amount equal to the portion thereof to be so exchanged or
canceled, or equal to the principal amount of such other Security to be so
exchanged for a beneficial interest therein, as the case may be, by means of an
appropriate adjustment made on the records of the Trustee, as Security
Registrar, whereupon the Trustee, in accordance with the Applicable Procedures,
shall instruct the Depositary or its authorized representative to make a
corresponding adjustment to its records. Upon any such surrender or adjustment
of a Global Security, the Trustee shall, subject to Section 3.5(3) and as
otherwise provided in this Article III, authenticate and deliver any Securities
issuable in exchange for such Global Security (or any portion thereof) to or
upon the order of, and registered in such names as may be directed by, the
Depositary or its authorized representative. Upon the request of the Trustee in
connection with the occurrence of any of the events specified in the preceding
paragraph, the Company shall promptly make available to the Trustee a reasonable
supply of Securities that are not in the form of Global Securities. The Trustee
shall be entitled to rely upon any order, direction or request of the Depositary
or its authorized representative which is given or made pursuant to this Article
III if such order, direction or request is given or made in accordance with the
Applicable Procedures.

               (iv)  Every Security authenticated and delivered upon
registration of transfer of, or in exchange for or in lieu of, a Global Security
or any portion thereof, whether

                                      -39-
<PAGE>

pursuant to this Article III or otherwise, shall be authenticated and delivered
in the form of, and shall be, a registered Global Security, unless such Security
is registered in the name of a Person other than the Depositary for such Global
Security or a nominee thereof, in which case such Security shall be
authenticated and delivered in definitive, fully registered form, without
interest coupons.

               (v)   The Depositary or its nominee, as registered owner of a
Global Security, shall be the Holder of such Global Security for all purposes
under the Indenture and the Securities, and owners of beneficial interests in a
Global Security shall hold such interests pursuant to the Applicable Procedures.
Accordingly, any such owner's beneficial interest in a Global Security will be
shown only on, and the transfer of such interest shall be effected only through,
records maintained by the Depositary or its nominee or its Agent Members and
such owners of beneficial interests in a Global Security will not be considered
the owners or holders thereof.

          (2)  Non-Global Securities.  Securities issued upon the events
               ---------------------
described in Section 3.4(l)(ii) shall be in definitive, fully registered form,
without interest coupons, and shall bear the Restricted Securities Legend if and
as required by this Indenture.

SECTION   3.5  Registration; Registration of Transfer and Exchange; Restrictions
               -----------------------------------------------------------------
on Transfer.  (1) The Company shall cause to be kept at the Corporate Trust
-----------
Office of the Trustee a register (the register maintained in such office
referred to as the "Security Register") in which, subject to such reasonable
regulations as it may prescribe, the Company shall provide for the registration
of Securities and of transfers of Securities. The Trustee is hereby appointed
"Security Registrar" for the purpose of registering Securities and transfers and
exchanges of Securities as herein provided.

     Upon surrender for registration of transfer of any Security at an office or
agency of the Company designated pursuant to Section 10.2 for such purpose, the
Company shall execute, and the Trustee shall authenticate and deliver, in the
name of the designated transferee or transferees, one or more new Securities of
any authorized denominations and of a like aggregate principal amount and
bearing such restrictive legends as may be required by this Indenture.

     At the option of the Holder, and subject to the other provisions of this
Section 3.5, Securities may be exchanged for other Securities of any authorized
denomination and of a like aggregate principal amount, upon surrender of the
Securities to be exchanged at any such office or agency. Whenever any Securities
are so surrendered for exchange, and subject to the other provisions of this
Section 3.5, the Company shall execute, and the Trustee shall authenticate and
deliver, the Securities which the Holder making the exchange is entitled to
receive. Every Security presented or surrendered for registration of transfer or
for exchange shall (if so required by the Company or the Security Registrar) be
duly endorsed, or be accompanied by a written instrument of transfer in form
satisfactory to the Company, the Trustee and the Security Registrar duly
executed, by the Holder thereof or his attorney duly authorized in writing.

                                      -40-
<PAGE>

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

     No service charge shall be made to a Holder for any registration of
transfer or exchange of Securities except as provided in Section 3.6, but the
Company may require payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in connection with any registration of
transfer or exchange of Securities, other than exchanges pursuant to Section
3.4, 8.5, 12.2 or 14.3 (other than where the shares of Common Stock are to be
issued or delivered in a name other than that of the Holder of the Security) not
involving any transfer and other than any stamp and other duties, if any, which
may be imposed in connection with any such transfer or exchange by the United
States or any political subdivision thereof or therein, which shall be paid by
the Company.

     In the event of a redemption of the Securities, neither the Company nor the
Securities Registrar will be required (a) to register the transfer of or
exchange Securities for a period of 15 days immediately preceding the date
notice is given identifying the serial numbers of the Securities called for such
redemption or (b) to register the transfer of or exchange any Security, or
portion thereof, called for redemption.

          (2)  Certain Transfers and Exchanges.  Notwithstanding any other
               -------------------------------
provision of this Indenture or the Securities, transfers and exchanges of
Securities and beneficial interests in a Global Security of the kinds specified
in this Section 3.5(2) shall be made only in accordance with this Section
3.5(2).

               (i)  Restricted Global Security to Restricted Non-global
                    ---------------------------------------------------
Security.  In the event that non-Global Securities are to be issued pursuant to
--------
Section 3.4(1)(ii) in connection with any transfer of Securities, such transfer
may be effected only in accordance with the provisions of this Clause (2)(i) and
subject to the Applicable Procedures. Upon receipt by the Trustee, as Security
Registrar, of (A) a Company Order from the Company directing the Trustee, as
Security Registrar, to (x) authenticate and deliver one or more Securities of
the same aggregate principal amount as the beneficial interest in the Restricted
Global Security to be transferred, such instructions to contain the name or
names of the designated transferee or transferees, the authorized denomination
or denominations of the Securities to be so issued and appropriate delivery
instructions and (y) decrease the beneficial interest of a specified Agent
Member's account in a Restricted Global Security by a specified principal amount
not greater than the principal amount of such Restricted Global Security, and
(B) such other certifications, legal opinions or other information as the
Company or the Trustee may reasonably require to confirm that such transfer is
being made pursuant to an exemption from, or in a transaction not subject to,
the registration requirements of the Securities Act, then the Trustee, as
Security Registrar, shall decrease the principal amount of the Restricted Global
Security by the

                                      -41-
<PAGE>

specified amount and authenticate and deliver Securities in accordance with such
instructions from the Company as provided in Section 3.4(1)(iii).

               (ii)   Restricted Non-global Security to Restricted Global
                      ---------------------------------------------------
Security.  If the Holder of a Restricted Security (other than a Global Security)
--------
wishes at any time to transfer all or any portion of such Restricted Security to
a Person who wishes to take delivery thereof in the form of a beneficial
interest in the Restricted Global Security, such transfer may be effected only
in accordance with the provisions of this Clause (2)(ii) and subject to the
Applicable Procedures. Upon receipt by the Trustee, as Security Registrar, of
(A) such Restricted Security as provided in Section 3.5(1) and instructions from
the Company directing that a beneficial interest in the Restricted Global
Security in a specified principal amount not greater than the principal amount
of such Security be credited to a specified Agent Member's account and (B) a
Restricted Securities Certificate, satisfactory to the Trustee and duly executed
by such Holder or his attorney duly authorized in writing, then the Trustee, as
Security Registrar, shall cancel such Restricted Security (and issue a new
Restricted Security in respect of any untransferred portion thereof) as provided
in Section 3.5(1) and increase the principal amount of the Restricted Global
Security by the specified principal amount as provided in Section 3.4(1)(iii).

               (iii)  Exchanges Between Global Security and Non-global Security.
                      ---------------------------------------------------------
A beneficial interest in a Global Security may be exchanged for a Security that
is not a Global Security only as provided in Section 3.4 and only if such
exchange occurs in connection with a transfer effected in accordance with Clause
2(i) above, provided that, if such interest is a beneficial interest in the
Restricted Global Security, then such interest shall be exchanged for a
Restricted Security (subject in each case to Section 3.5(3)). A Security that is
not a Global Security may be exchanged for a beneficial interest in a Global
Security only if such exchange occurs in connection with a transfer effected in
accordance with Clause (2)(ii) above.

          (3)  Securities Act Legends.  All Securities issued pursuant to this
Indenture, and all Successor Securities, shall bear the Restricted Securities
Legend, subject to the following:

               (i)    subject to the following Clauses of this Section 3.5(3), a
Security or any portion thereof which is exchanged, upon transfer or otherwise,
for a Global Security or any portion thereof shall bear the Restricted
Securities Legend borne by such Global Security for which the Security was
exchanged;

               (ii)   subject to the following Clauses of this Section 3.5(3), a
new Security which is not a Global Security and is issued in exchange for
another Security (including a Global Security) or any portion thereof, upon
transfer or otherwise, shall bear the Restricted Securities Legend borne by the
Security for which the new Security was exchanged;

                                      -42-
<PAGE>

               (iii)  any Securities which are sold or otherwise disposed of
pursuant to an effective registration statement under the Securities Act
(including the Shelf Registration Statement), together with their Successor
Securities shall not bear a Restricted Securities Legend; the Company shall
inform the Trustee in writing of the effective date of any such registration
statement registering the Securities under the Securities Act and shall notify
the Trustee at any time when prospectuses must be delivered with respect to
Securities to be sold pursuant to such registration statement. The Trustee shall
not be liable for any action taken or omitted to be taken by it in good faith in
accordance with the aforementioned registration statement;

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

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

               (vi)   notwithstanding the foregoing provisions of this Section
3.5(3), a Successor Security of a Security that does not bear a Restricted
Securities Legend shall not bear such legend unless the Company has reasonable
cause to believe that such Successor Security is a "restricted security" within
the meaning of Rule 144, in which case the Trustee, at the direction of the
Company, shall authenticate and deliver a new Security bearing a Restricted
Securities Legend in exchange for such Successor Security as provided in this
Article III.

          (4)  Any stock certificate representing shares of Common Stock issued
upon conversion of the Securities shall bear the Restricted Securities Legend
borne by such Securities, to the extent required by this Indenture, unless such
shares of Common Stock have been sold pursuant to a registration statement that
has been declared effective under the Securities Act (and which continues to be
effective at the time of such transfer) or sold pursuant to Rule 144 of the
Securities Act, or unless otherwise agreed by the Company in writing with
written notice thereof to the transfer agent for the Common Stock. With respect
to the transfer of shares of Common Stock issued upon

                                      -43-
<PAGE>

conversion of the Securities that are restricted hereunder, any deliveries of
certificates, legal opinions or other instruments that would be required to be
made to the Security Registrar in the case of a transfer of Securities, as
described above, shall instead be made to the transfer agent for the Common
Stock.

          (5)  Neither the Trustee, the Paying Agent nor any of their agents
shall (i) have any duty to monitor compliance with or with respect to any
federal or state or other securities or tax laws or (ii) have any duty to obtain
documentation on any transfers or exchanges other than as specifically required
hereunder.

SECTION 3.6    Mutilated, Destroyed, Lost or Stolen Securities.  (1) If any
               -----------------------------------------------
mutilated Security is surrendered to the Trustee, the Company shall execute and
the Trustee shall authenticate and deliver in exchange therefor a new Security
of like tenor and principal amount and bearing a number not contemporaneously
outstanding.

     If there be delivered to the Company and to the Trustee:

          (1)  evidence to their satisfaction of the destruction, loss or theft
of any Security, and

          (2)  such security or indemnity as may be satisfactory to the Company
and the Trustee to save each of them and any agent of either of them harmless,
then, in the absence of actual notice to the Company or the Trustee that such
Security has been acquired by a bona fide purchaser, the Company shall execute
and the Trustee shall authenticate and deliver, in lieu of any such destroyed,
lost or stolen Security, a new Security of like tenor and principal amount and
bearing a number not contemporaneously outstanding.

     In case any such mutilated, destroyed, lost or stolen Security has become
or is about to become due and payable, the Company in its discretion, but
subject to any conversion rights, may, instead of issuing a new Security, pay
such Security, upon satisfaction of the conditions set forth in the preceding
paragraph.

     Upon the issuance of any new Security under this Section 3.6, 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 (other than any
stamp and other duties, if any, which may be imposed in connection therewith by
the United States or any political subdivision thereof or therein, which shall
be paid by the Company) and any other expenses (including the fees and expenses
of the Trustee) connected therewith.

     Every new Security issued pursuant to this Section 3.6 in lieu of any
mutilated, destroyed, lost or stolen Security shall constitute an original
additional contractual obligation of the Company,

                                      -44-
<PAGE>

whether or not the mutilated, destroyed, lost or stolen Security shall be at any
time enforceable by anyone, and such new Security shall be entitled to all the
benefits of this Indenture equally and proportionately with any and all other
Securities duly issued hereunder.

     The provisions of this Section 3.6 are exclusive and shall preclude (to the
extent lawful) all other rights and remedies of any Holder with respect to the
replacement or payment of mutilated, destroyed, lost or stolen Securities.

SECTION 3.7    Payment of Interest; Interest Rights Preserved.  Interest on any
               ----------------------------------------------
Security which is payable, and is punctually paid or duly provided for, on any
Interest Payment Date shall be paid to the Person in whose name that Security
(or one or more Predecessor Securities) is registered at the close of business
on the Regular Record Date for such interest.

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

          (1)  The Company may elect to make payment of any Defaulted Interest
to the Persons in whose names the Securities (or their respective Predecessor
Securities) are registered at the close of business on a Special Record Date for
the payment of such Defaulted Interest, which shall be fixed in the following
manner. The Company shall notify the Trustee in writing of the amount of
Defaulted Interest proposed to be paid on each Security, the date of the
proposed payment and the Special Record Date, 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. The Special Record Date for the payment of such Defaulted Interest
shall be not more than 15 days and not less than 10 days prior to the date of
the proposed payment and not less than 10 days after the receipt by the Trustee
of the notice of the proposed payment. The Trustee, in the name and at the
expense of the Company, shall cause notice of the proposed payment of such
Defaulted Interest and the Special Record Date therefor to be mailed, first-
class postage prepaid, to each Holder at such Holder's address as it appears in
the Security Register, not less than 10 days prior to such Special Record Date.
Notice of the proposed payment of such Defaulted Interest and the Special Record
Date therefor having been so mailed, such Defaulted Interest shall be paid to
the Persons in whose names the Securities (or their respective Predecessor
Securities) are registered at the close of business on such Special Record Date
and shall no longer be payable pursuant to the following Clause (2).

                                      -45-
<PAGE>

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

     Subject to the foregoing provisions of this Section and Section 3.5, each
Security delivered under this Indenture upon registration of transfer of or in
exchange for or in lieu of any other Security shall carry the rights to interest
accrued and unpaid, and to accrue, which were carried by such other Security.

     Interest on any Security which is converted in accordance with Section 12.2
during a Record Date Period shall be payable in accordance with the provisions
of Section 12.2.

SECTION 3.8    Persons Deemed Owners.  Prior to due presentment of a Security
               ---------------------
for registration of transfer, the Company, the Trustee, any Paying Agent or the
Security Registrar, and any agent of the Company, the Trustee or any Paying
Agent or the Security Registrar, may treat the Person in whose name such
Security is registered as the owner of such Security for the purpose of
receiving payment of principal of, premium, if any, and (subject to Section 3.7)
interest on such Security and for all other purposes whatsoever, whether or not
such Security be overdue, and neither the Company, the Trustee, any Paying
Agent, the Security Registrar nor any agent of the Company, the Trustee or any
Paying Agent or the Security Registrar shall be affected by notice to the
contrary.

     None of the Company, the Trustee, any Paying Agent or the Security
Registrar will have any responsibility or liability for any aspect of the
records relating to or payments made on account of beneficial ownership
interests of a Global Security or for maintaining, supervising or reviewing any
records relating to such beneficial ownership interests, and each shall be
protected in acting on any such information provided by the Depositary.

                                      -46-
<PAGE>

SECTION 3.9    Cancellation.  All Securities surrendered for payment,
               ------------
redemption, repurchase, registration of transfer or exchange or conversion
shall, if surrendered to any Person other than the Trustee, be delivered to the
Trustee. All Securities so delivered to the Trustee shall be canceled promptly
by the Trustee (or its agent). No Securities shall be authenticated in lieu of
or in exchange for any Securities canceled as provided in this Section 3.9. The
Trustee shall dispose of all canceled Securities in accordance with applicable
law and its customary practices in effect from time to time.

SECTION 3.10   Computation of Interest.  Interest on the Securities (including
               -----------------------
any interest upon overdue interest or Liquidated Damages) shall be computed on
the basis of a 360-day year of twelve 30-day months.

SECTION 3.11   Cusip Numbers.  The Company in issuing Securities may use "CUSIP"
               -------------
numbers (if then generally in use) in addition to serial numbers; if so, the
Trustee shall use such CUSIP numbers in addition to serial numbers in notices of
redemption and repurchase as a convenience to Holders; provided that any such
notice may state that no representation is made as to the correctness of such
CUSIP numbers either as printed on the Securities or as contained in any notice
of a redemption or repurchase and that reliance may be placed only on the serial
or other identification numbers printed on the Securities, and any such
redemption or repurchase shall not be affected by any defect in or omission of
such CUSIP numbers.

                                  ARTICLE IV

                          SATISFACTION AND DISCHARGE

SECTION 4.1    Satisfaction And Discharge of Indenture.  This Indenture shall
               ---------------------------------------
upon Company Request cease to be of further effect (except as to any surviving
rights of conversion, or registration of transfer or exchange, or replacement of
Securities herein expressly provided for and any right to receive Liquidated
Damages as provided in Section 10.11 and in the form of Securities set forth in
Section 2.2 and the Company's obligations to the Trustee pursuant to Section
6.7), and the Trustee, at the expense of the Company, shall execute proper
instruments in form and substance satisfactory to the Trustee acknowledging
satisfaction and discharge of this Indenture, when

          (1)  either

               (i)   all Securities theretofore authenticated and delivered
(other than (A) Securities which have been destroyed, lost or stolen and which
have been replaced or paid as provided in Section 3.6 and (B) Securities for
whose payment money has theretofore been deposited in trust or segregated and
held in trust by the Company and thereafter repaid to the Company or discharged
from such trust, as provided in Section 10.3) have been delivered to the Trustee
for cancellation; or

                                      -47-
<PAGE>

               (ii)  all such Securities not theretofore delivered to the
Trustee or its agent for cancellation (other than Securities referred to in
clauses (A) and (B) of clause (1)(i) above)

                     (a)  have become due and payable, or

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

                     (c)  are to be called for redemption within one year under
arrangements satisfactory to the Trustee for the giving of notice of redemption
by the Trustee in the name, and at the expense, of the Company, and the Company,
in the case of clause (a), (b) or (c) above, has deposited or caused to be
deposited with the Trustee as trust funds (immediately available to the Holders
in the case of clause (a)) in trust for the purpose an amount in cash sufficient
to pay and discharge the entire indebtedness on such Securities not theretofore
delivered to the Trustee for cancellation, for principal, premium, if any, and
interest (including any interest upon overdue interest and Liquidated Damages)
to the date of such deposit (in the case of Securities which have become due and
payable) or to the Stated Maturity or Redemption Date, as the case may be,
including without limitation the payment of all fees and expenses of the
Trustee, its agents and counsel;

          (2)  the Company has paid or caused to be paid all other sums payable
hereunder by the Company, including without limitation the payment of all fees
and expenses of the Trustee, its agents and counsel ; and

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

     Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company to the Trustee under Section 6.7, the obligations of
the Company to any Authenticating Agent under Section 6.12, the obligation of
the Company to pay Liquidated Damages, if money shall have been deposited with
the Trustee pursuant to clause (1)(ii) of this Section 4.1, the obligations of
the Trustee under Section 4.2 and the last paragraph of Section 10.3 and the
obligations of the Company and the Trustee under Section 3.5 and Article XII
shall survive.

                                      -48-
<PAGE>

SECTION 4.2    Application of Trust Money.  Subject to the provisions of the
               --------------------------
last paragraph of Section 10.3, all money deposited with the Trustee pursuant to
Section 4.1 and in accordance with the provisions of Article XIII shall be held
in trust for the sole benefit of the Holders and not be subject to the
subordination provisions of Article XIII, and such monies shall be applied by
the Trustee, in accordance with the provisions of the Securities and this
Indenture, to the payment, either directly or through any Paying Agent, to the
Persons entitled thereto, of the principal, premium, if any, and interest for
whose payment such money has been deposited with the Trustee.

     All moneys deposited with the Trustee pursuant to Section 4.1 (and held by
it or any Paying Agent) for the payment of Securities subsequently converted
shall be returned to the Company upon Company Request.

     The Company shall pay and indemnify the Trustee against any tax, fee or
other charge imposed or assessed against all money deposited with the Trustee
pursuant to Section 4.1 (other than income taxes and franchise taxes incurred or
payable by the Trustee and such other taxes, fees or charges incurred or payable
by the Trustee that are not directly the result of the deposit of such money
with the Trustee).

                                   ARTICLE V

                                   REMEDIES

SECTION 5.1    Events of Default.  "Event of Default", wherever used herein,
               -----------------
means any one of the following events (whatever the reason for such Event of
Default and whether it shall be occasioned by the provisions of Article XIII or
be voluntary or involuntary or be effected by operation of law or pursuant to
any judgment, decree or order of any court or any order, rule or regulation of
any administrative or governmental body):

          (1)  default in the payment of the principal of or premium, if any, on
any Security at its Maturity, whether or not such payment is prohibited by the
subordination provisions of the Securities or of this Indenture; or

          (2)  default in the payment of any interest (including any interest
upon overdue interest or Liquidated Damages) upon any Security when it becomes
due and payable, and continuance of such default for a period of 30 days,
whether or not such payment is prohibited by the subordination provisions of the
Securities or of this Indenture; or

                                      -49-
<PAGE>

          (3)  failure by the Company to provide an Offer to Purchase in
accordance with Section 14.3 whether or not such Offer to Purchase is prohibited
by the subordination provisions of the Securities or the Indenture; or

          (4)  default in the performance, or breach, of any covenant or
warranty of the Company in this Indenture (other than a covenant or warranty a
default in the performance or breach of which is specifically dealt with
elsewhere in this Section), and continuance of such default or breach for a
period of 60 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 principal amount of the Outstanding Securities a written
notice (a "Notice of Default") specifying such default or breach and requiring
it to be remedied and stating that such notice is a Notice of Default hereunder;
or

          (5)  (i) any default by the Company or any Significant Subsidiary in
the payment of the principal, premium, if any, or interest has occurred with
respect to amounts in excess of $10.0 million under any agreement, indenture or
instrument evidencing Indebtedness when the same shall become due and payable in
full and such default shall have continued after any applicable grace period and
shall not have been cured or waived and, if not already matured at its final
maturity in accordance with its terms, the holder of such Indebtedness shall
have the right to accelerate such Indebtedness, or (ii) any event of default as
defined in any agreement, indenture or instrument of the Company or any
Significant Subsidiary evidencing Indebtedness in excess of $10.0 million shall
have occurred and the Indebtedness thereunder, if not already matured at its
final maturity in accordance with its terms, shall have been accelerated; or

          (6)  the entry by a court having jurisdiction in the premises of (A) a
decree or order for relief in respect of the Company or any Significant
Subsidiary in an involuntary case or proceeding under any applicable Federal or
State bankruptcy, insolvency, reorganization or other similar law or (B) a
decree or order adjudging the Company or any Significant Subsidiary a bankrupt
or insolvent, or approving as properly filed a petition seeking reorganization,
arrangement, adjustment or composition of or in respect of the Company or any
Significant Subsidiary under any applicable Federal or State law, or appointing
a custodian, receiver, liquidator, assignee, trustee, sequestrator or other
similar official of the Company or any Significant Subsidiary or of any
substantial part of the property of either, or ordering the winding up or
liquidation of its affairs, and the continuance of any such decree or order for
relief or any such other decree or order unstayed and in effect for a period of
60 consecutive days; or

          (7)  the commencement by the Company or any Significant Subsidiary of
a voluntary case or proceeding under any applicable Federal or State bankruptcy,
insolvency, reorganization or other similar law or of any other case or
proceeding to be adjudicated a bankrupt or insolvent, or the consent by either
to the entry of a decree or order for relief in respect of the

                                      -50-
<PAGE>

Company or any Significant Subsidiary in an involuntary case or proceeding under
any applicable Federal or State bankruptcy, insolvency, reorganization or other
similar law or to the commencement of any bankruptcy or insolvency case or
proceeding against either, or the filing by either of a petition or answer or
consent seeking reorganization or similar relief under any applicable Federal or
State law, or the consent by either to the filing of such petition or to the
appointment of or taking possession by a custodian, receiver, liquidator,
assignee, trustee, sequestrator or other similar official of the Company or any
Significant Subsidiary or of any substantial part of the property of either, or
the making by either of an assignment for the benefit of creditors, or the
admission by either in writing of its inability to pay its debts generally as
they become due, or the taking of corporate action by the Company or any
Significant Subsidiary in furtherance of any such action.

SECTION 5.2   Acceleration of Maturity; Rescission and Annulment. If an Event of
              --------------------------------------------------
Default (other than an Event of Default specified in Section 5.1(6) or 5.1(7)
with respect to the Company) occurs and is continuing, then in every such case
the Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Securities may, subject to the provisions of Article XIII, declare
the principal of all the Securities to be due and payable immediately, by a
notice in writing to the Company (and to the Trustee if given by the Holders),
and upon any such declaration such principal and all accrued interest thereon
shall become immediately due and payable. If an Event of Default specified in
Section 5.1(6) or 5.1(7) with respect to the Company occurs, the principal of,
and accrued interest on, all the Securities shall, subject to the provisions of
Article XIII, ipso facto become immediately due and payable without any
declaration or other Act of the Holders or any act on the part of the Trustee.

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

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

              (i)   all overdue interest on all Securities,

              (ii)  the principal of and premium, if any, on any Securities
which have become due otherwise than by such declaration of acceleration and any
interest thereon at the rate borne by the Securities,

              (iii) to the extent permitted by applicable law, interest upon
overdue interest at a rate of 6 3/4% per annum, and

                                      -51-
<PAGE>

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

          (2) all Events of Default, other than the nonpayment of the principal
of and any premium and interest on, Securities which have become due solely by
such declaration of acceleration, have been cured or waived as provided in
Section 5.13; and

          (3) such rescission and annulment would not conflict with any judgment
or decree issued in appropriate judicial proceedings regarding the payment by
the Trustee to the Holders of the amounts referred to in 5.2(1).

     No rescission or annulment referred to above shall affect any subsequent
default or impair any right consequent thereon.

SECTION 5.3   Collection of Indebtedness and Suits for Enforcement by Trustee.
              ---------------------------------------------------------------
The Company covenants that if:

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

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

the Company will, upon demand of the Trustee but subject to the provisions of
Article XIII pay to it, for the benefit of the Holders of such Securities the
whole amount then due and payable on such Securities for principal and interest
(including any Liquidated Damages) and interest on any overdue principal and
premium, if any, and, to the extent permitted by applicable law, any interest
upon overdue interest (including any Liquidated Damages), at a rate of 6 3/4%
per annum, and in addition thereto, such further amount as shall be sufficient
to cover the reasonable costs and expenses of collection, including the
reasonable compensation, expenses, disbursements and advances of the Trustee,
its agents and counsel.

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

                                      -52-
<PAGE>

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

SECTION 5.4   Trustee May File Proofs of Claim. In case of the pendency of any
              --------------------------------
receivership, insolvency, liquidation, bankruptcy, reorganization, arrangement,
adjustment, composition or other judicial proceeding relative to the Company or
any other obligor upon the Securities or the property of the Company or of such
other obligor or the creditors of either, the Trustee (irrespective of whether
the principal of, and any interest on, the Securities shall then be due and
payable as therein expressed or by declaration or otherwise and irrespective of
whether the Trustee shall have made any demand on the Company for the payment of
overdue principal or interest) shall be entitled and empowered, by intervention
in such proceeding or otherwise,

          (1) to file and prove a claim for the whole amount of principal,
premium, if any, and interest owing and unpaid in respect of the Securities and
take such other actions, including participating as a member, voting or
otherwise, of any official committee of creditors appointed in such matter, and
to file such other papers or documents, in each of the foregoing cases, as may
be necessary or advisable in order to have the claims of the Trustee (including
any claim for the reasonable compensation, expenses, disbursements and advances
of the Trustee, its agents and counsel) and of the Holders of Securities allowed
in such judicial proceeding, and

          (2) to collect and receive any moneys or other property payable or
deliverable on any such claim and to distribute the same; and any custodian,
receiver, assignee, trustee, liquidator, sequestrator or other similar official
in any such judicial proceeding is hereby authorized by each Holder of
Securities to make such payments to the Trustee and, in the event that the
Trustee shall consent to the making of such payments directly to the Holders of
Securities, to pay to the Trustee any amount due to it for the reasonable
compensation, expenses, disbursements and advances of the Trustee, its agents
and counsel and any other amounts due the Trustee under Section 6.7.

     Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder of a Security
any plan of reorganization, arrangement, adjustment or composition affecting the
Securities or the rights of any Holder thereof or to authorize the Trustee to
vote in respect of the claim of any Holder of a Security in any such proceeding;
provided, however, that the Trustee may, on behalf of such Holders, vote for the
election of a trustee in bankruptcy or similar official.

SECTION 5.5   Trustee May Enforce Claims Without Possession of Securities. All
              -----------------------------------------------------------
rights of action and claims under this Indenture or the Securities may be
prosecuted and enforced by the Trustee without the possession of any of the
Securities or the production thereof in any proceeding

                                      -53-
<PAGE>

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

SECTION 5.6   Application of Money Collected. Subject to Article XIII, any money
              ------------------------------
collected by the Trustee pursuant to this Article V shall be applied in the
following order, at the date or dates fixed by the Trustee and, in case of the
distribution of such money on account of principal, premium, if any, or
interest, upon presentation of the Securities and the notation thereon of the
payment if only partially paid and upon surrender thereof if fully paid:

     FIRST:   To the payment of all amounts due the Trustee under Section 6.7;

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

     THIRD:   To such other Person or Persons, if any, to the extent entitled
thereto; and

     FOURTH:  Any remaining amounts shall be repaid to the Company.

SECTION 5.7   Limitation on Suits. No Holder of any Security shall have any
              -------------------
right to institute any proceeding, judicial or otherwise, with respect to this
Indenture, or for the appointment of a receiver or trustee, or for any other
remedy hereunder, unless:

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

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

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

                                      -54-
<PAGE>

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

          (5) no direction inconsistent with such written request has been given
to the Trustee during such 60 day period by the Holders of a majority in
principal amount of the Outstanding Securities, it being understood and intended
that no one or more of such Holders shall have any right in any manner whatever
by virtue of, or by availing of, any provision of this Indenture to affect,
disturb or prejudice the rights of any other of such Holders, or to obtain or
seek to obtain priority or preference over any other of such Holders or to
enforce any right under this Indenture, except in the manner herein provided and
for the equal and ratable benefit of all such Holders.

SECTION 5.8   Unconditional Right of Holders to Receive Principal, Premium and
              ----------------------------------------------------------------
Interest and to Convert. Notwithstanding any other provision in this Indenture,
-----------------------
but subject to the provisions of Article XIII, the Holder of any Security shall
have the right, which is absolute and unconditional, to receive payment of the
principal of, premium, if any, and (subject to Section 3.7) interest (including
Liquidated Damages, if any) on such Security on the respective Stated Maturities
expressed in such Security (or, in the case of redemption or repurchase, on the
Redemption Date or Repurchase Date, as the case may be), and to convert such
Security in accordance with Article XII, and to institute suit for the
enforcement of any such payment and right to convert, and such rights shall not
be impaired without the consent of such Holder.

                                      -55-
<PAGE>

SECTION 5.9   Restoration of Rights and Remedies. If the Trustee or any Holder
              ----------------------------------
of a Security has instituted any proceeding to enforce any right or remedy under
this Indenture and such proceeding has been discontinued or abandoned for any
reason, or has been determined adversely to the Trustee or to such Holder, then
and in every such case, subject to any determination in such proceeding, the
Company, the Trustee and the Holders of Securities shall be restored severally
and respectively to their former positions hereunder and thereafter all rights
and remedies of the Trustee and such Holders shall continue as though no such
proceeding had been instituted.

SECTION 5.10  Rights and Remedies Cumulative. Except as otherwise provided with
              ------------------------------
respect to the replacement or payment of mutilated, destroyed, lost or stolen
Securities in the last paragraph of Section 3.6, no right or remedy herein
conferred upon or reserved to the Trustee or to the Holders of Securities is
intended to be exclusive of any other right or remedy, and every right and
remedy shall, to the extent permitted by law, be cumulative and in addition to
every other right and remedy given hereunder or now or hereafter existing at law
or in equity or otherwise. The assertion or employment of any right or remedy
hereunder, or otherwise, shall not prevent the concurrent assertion or
employment of any other appropriate right or remedy.

SECTION 5.11  Delay or Omission Not Waiver. No delay or omission of the Trustee
              ----------------------------
or of any Holder of any Security to exercise any right or remedy accruing upon
any Event of Default shall impair any such right or remedy or constitute a
waiver of any such Event of Default or any acquiescence therein. Every right and
remedy given by this Article V or by law to the Trustee or to the Holders of
Securities may be exercised from time to time, and as often as may be deemed
expedient, by the Trustee or (subject to the limitations contained in this
Indenture) by the Holders of Securities as the case may be.

SECTION 5.12  Control by Holders of Securities. Subject to Section 6.3, the
              --------------------------------
Holders of a majority in principal amount of the Outstanding Securities shall
have the right to direct the time, method and place of conducting any proceeding
for any remedy available to the Trustee or exercising any trust or power
conferred on the Trustee, provided that

          (1) such direction shall not be in conflict with any rule of law or
with this Indenture, and

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

          (3) the Trustee need not take any action which might involve it in
personal liability or be unjustly prejudicial to the Holders of Securities not
consenting.

SECTION 5.13  Waiver of Past Defaults. The Holders, either (i) through the
              -----------------------
written consent of not less than a majority in principal amount of the
Outstanding Securities or (ii) by the adoption of a

                                      -56-
<PAGE>

resolution, at a meeting of Holders of the Outstanding Securities at which a
quorum is present, by the Holders of at least 66-2/3% in principal amount of the
Outstanding Securities represented at such meeting, may on behalf of the Holders
of all the Securities waive any past default hereunder and its consequences,
except a default (A) in the payment of the principal of, premium, if any, or
interest (including Liquidated Damages) on any Security, or (B) in respect of a
covenant or provision hereof which under Article VIII cannot be modified or
amended without the consent of the Holder of each Outstanding Security affected.

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

                                      -57-
<PAGE>

SECTION 5.14  Undertaking for Costs. All parties to this Indenture agree, and
              ---------------------
each Holder of any 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 any suit against the
Trustee for any action taken, suffered 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, 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 5.14 shall not apply to
any suit instituted by the Company, to any suit instituted by the Trustee, to
any suit instituted by any Holder, or group of Holders, holding in the aggregate
more than 10% in principal amount of the Outstanding Securities, or to any suit
instituted by any Holder of any Security for the enforcement of the payment of
the principal of, premium, if any, or interest on any Security on or after the
respective Stated Maturity or Maturities expressed in such Security (or, in the
case of redemption or repurchase, on or after the Redemption Date or Repurchase
Date, as the case may be) or for the enforcement of the right to convert any
Security in accordance with Article XII.

SECTION 5.15  Waiver of Stay, Usury or Extension Laws. The Company covenants (to
              ---------------------------------------
the extent that it may lawfully do so) that it will not at any time insist upon,
or plead, or in any manner whatsoever claim or take the benefit or advantage of,
any stay, usury or extension law wherever enacted, now or at any time hereafter
in force, which may affect the covenants or the performance of this Indenture;
and the Company (to the extent that it may lawfully do so) hereby expressly
waives all benefit or advantage of any such law and covenants that it will not
hinder, delay or impede by reason of such law the execution of any power herein
granted to the Trustee, but will suffer and permit the execution of every such
power as though no such law had been enacted.

                                  ARTICLE VI

                                  THE TRUSTEE

SECTION 6.1   Certain Duties and Responsibilities. Except during the continuance
              -----------------------------------
of an Event of Default,

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

               (ii) in the absence of bad faith on its part, the Trustee may
conclusively rely, as to the truth of the statements and the correctness of the
opinions expressed therein, upon certificates or opinions furnished to the
Trustee and conforming to the requirements of this Indenture, but in the case of
any such certificates or opinions which by any provision hereof are specifically
required to be furnished to the Trustee, the Trustee shall be under a duty to
examine the

                                      -58-
<PAGE>

same to determine whether or not they conform to the requirements of this
Indenture, but not to verify the contents thereof (or to confirm or investigate
the accuracy of mathematical calculations or other facts stated therein).

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

          (3) 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

              (i)    this paragraph (3) shall not be construed to limit the
effect of paragraph (1) of this Section;

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

              (iii)  the Trustee shall not be liable with respect to any action
taken or omitted to be taken by it in good faith in accordance with the
direction of the Holders of a majority in principal amount of the Outstanding
Securities relating to the time, method and place of conducting any proceeding
for any remedy available to the Trustee, or exercising any trust or power
conferred upon the Trustee, under this Indenture; and

              (iv)   no provision of this Indenture shall require the Trustee to
expend or risk its own funds or otherwise incur any financial liability in the
performance of any of its duties hereunder, or in the exercise of any of its
rights or powers, if it shall have reasonable grounds for believing that
repayment of such funds or adequate indemnity against such risk or liability is
not reasonably assured to it.

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

SECTION 6.2   Notice of Defaults. Within 90 days after the occurrence of any
              ------------------
default hereunder as to which the Trustee has received written notice, the
Trustee shall give to all Holders of Securities, in the manner provided in
Section 1.6, notice of such default, unless such default shall have been cured
or waived; provided, however, that, except in the case of a default in the
payment of the principal of, premium, if any, or interest on any Security the
Trustee shall be protected in

                                      -59-
<PAGE>

withholding such notice if and so long as the board of directors, the executive
committee or a trust committee of directors or Responsible Officers of the
Trustee in good faith determines that the withholding of such notice is in the
interest of the Holders; and provided, further, that in the case of any default
of the character specified in Section 5.1(4), no such notice to Holders of
Securities shall be given until at least 60 days after the occurrence thereof
or, if applicable, the cure period specified therein. For the purpose of this
Section, the term "default" means any event which is, or after notice or lapse
of time or both would become, an Event of Default.

SECTION 6.3   Certain Rights of Trustee. Subject to the provisions of Section
              -------------------------
6.1:

          (1) the Trustee may conclusively rely, and shall be protected in
acting or refraining from acting, upon any resolution, Officers' Certificate,
other certificate, statement, instrument, opinion, report, notice, request,
direction, consent, order, bond, debenture, note, coupon, other evidence of
indebtedness or other paper or document (collectively, the "Documents") believed
by it to be genuine and to have been signed or presented by the proper party or
parties, and the Trustee need not investigate any fact or matter stated in such
Documents;

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

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

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

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

          (6) the Trustee shall not be bound to make any investigation into the
facts or matters stated in any Document, but the Trustee may make such further
inquiry or investigation into such facts or matters as it may see fit, and, if
the Trustee shall determine to make such further inquiry or investigation, it
shall be entitled to examine the books, records and premises of the Company,
personally or by agent or attorney;

                                      -60-
<PAGE>

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

          (8) the Trustee shall not be liable for any action it takes, suffers
to be taken or omits in good faith; and

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

SECTION 6.4   Not Responsible for Recitals or Issuance of Securities. The
              ------------------------------------------------------
recitals contained herein and in the Securities (except the Trustee's
certificates of authentication) shall be taken as the statements of the Company,
and the Trustee assumes no responsibility for their correctness. The Trustee
makes no representations as to the validity or sufficiency of this Indenture, of
the Securities or of the Common Stock issuable upon the conversion of the
Securities. The Trustee shall not be accountable for the use or application by
the Company of Securities or the proceeds thereof.

SECTION 6.5   May Hold Securities, Act as Trustee under Other Indentures. The
              ----------------------------------------------------------
Trustee, any Authenticating Agent, any Paying Agent, any Conversion Agent or any
other agent of the Company or the Trustee, in its individual or any other
capacity, may become the owner or pledgee of Securities and may otherwise deal
with the Company with the same rights it would have if it were not Trustee,
Authenticating Agent, Paying Agent, Conversion Agent or such other agent.

     The Trustee is hereby authorized to act as trustee under that certain
indenture between Exodus Communications, Inc. and the Trustee, dated as of July
1, 1998 (the "1998 Senior Indenture"), that certain Indenture dated as of March
1, 1999 (the "1999 Subordinated Indenture"), and that certain Indenture dated as
of the date hereof relating to Senior Notes due 2009 (the "1999 Senior
Indenture" and collectively with the 1998 Senior Indenture and the 1999
Subordinated Indenture, the "Prior Indentures") notwithstanding any provisions
of this Indenture or the Prior Indentures affecting the relative rights of
holders of securities issued under such indentures to payment thereon and to
security given to secure such payment. The Trustee may become and act as trustee
under other indentures under which other securities, or certificates of interest
or participation in other securities, of the Company are outstanding in the same
manner as if it were not Trustee hereunder. The Trustee is authorized to resign
from any of its appointments as Trustee hereunder, as trustee under any of the
Prior Indentures, or as trustee under any other indenture in the event that the
Trustee determines in good faith that its performance hereunder or thereunder
subjects the Trustee to a conflict of interest.

                                      -61-
<PAGE>

SECTION 6.6   Money Held in Trust. Money held by the Trustee in trust hereunder
              -------------------
need not be segregated from other funds except to the extent required by law.
The Trustee shall be under no liability for interest on any money received by it
hereunder except as otherwise agreed in writing with the Company.

SECTION 6.7   Compensation and Reimbursement. The Company agrees:
              ------------------------------

          (1) to pay to the Trustee from time to time such reasonable
compensation as the Company and the Trustee shall from time to time agree in
writing for its acceptance of this Indenture and for all services rendered by it
hereunder (which compensation shall not be limited by any provision of law in
regard to the compensation of a trustee of an express trust);

          (2) except as otherwise expressly provided herein, to reimburse the
Trustee upon its request for all reasonable expenses, disbursements and advances
incurred or made by the Trustee (including costs and expenses of enforcing this
Indenture and defending itself against any claim (whether asserted by the
Company, any Holder of Securities or any other Person) or liability in
connection with the exercise of any of its powers or duties hereunder) in
accordance with any provision of this Indenture (including the reasonable
compensation and the expenses and disbursements of its agents and counsel),
except any such expense, disbursement or advance as may be attributable to its
negligence or bad faith; and

          (3) to indemnify the Trustee (and its directors, officers, employees
and agents) for, and to hold it harmless against, any loss, damage, claim,
liability or expense incurred without negligence or bad faith on its part,
arising out of or in connection with the acceptance or administration of this
trust, including without limitation the reasonable costs, expenses and
reasonable attorneys' fees and expenses of defending itself against any claim or
liability in connection with the exercise or performance of any of its powers or
duties hereunder.

     When the Trustee incurs expenses or renders services in connection with an
Event of Default specified in Section 5.1(6) or Section 5.1(7), the expenses
(including the reasonable fees and expenses of its agents and counsel) and the
compensation for the services are intended to constitute expenses of the
administration under any applicable Federal or state bankruptcy, insolvency or
other similar law.

     If the Company shall default in the payment of any amount owing to the
Trustee pursuant to this Section 6.7, the Trustee shall be entitled to payment
of such amount out of all property and funds held by it hereunder prior to
payment to the Holders of any amount owing to them under the Notes.

     The provisions of this Section shall survive the termination of this
Indenture or the earlier resignation or removal of the Trustee.

                                      -62-
<PAGE>

SECTION 6.8   Corporate Trustee Required; Eligibility. There shall at all times
              ---------------------------------------
be a Trustee hereunder which shall be a Person that is eligible pursuant to the
Trust Indenture Act to act as such and has (or, in the case of a corporation
included in a bank holding company system, the related bank holding company has)
a combined capital and surplus of at least $50,000,000, subject to supervision
or examination by federal or state authority, and in good standing. The Trustee
or an Affiliate of the Trustee shall maintain an established place of business
in the Borough of Manhattan, The City of New York. If such corporation publishes
reports of condition at least annually, pursuant to law or to the requirements
of said supervising or examining authority, then for the purposes of this
Section, the combined capital and surplus of such corporation shall be deemed to
be its combined capital and surplus as set forth in its most recent report of
condition so published. If at any time the Trustee shall cease to be eligible in
accordance with the provisions of this Section, it shall resign immediately in
the manner and with the effect hereinafter specified in this Article and a
successor shall be appointed pursuant to Section 6.9.

SECTION 6.9   Resignation and Removal; Appointment of Successor. No resignation
              -------------------------------------------------
or removal of the Trustee and no appointment of a successor Trustee pursuant to
this Article shall become effective until the acceptance of appointment by the
successor Trustee in accordance with the applicable requirements of Section
6.10.

          (1) The Trustee may resign at any time by giving written notice
thereof to the Company. If the instrument of acceptance by a successor Trustee
required by Section 6.10 shall not have been delivered to the Trustee within 30
days after the giving of such notice of resignation, the resigning Trustee may
petition any court of competent jurisdiction for the appointment of a successor
Trustee.

          (2) The Trustee may be removed at any time by an Act of the Holders of
a majority in principal amount of the Outstanding Securities, delivered to the
Trustee and the Company. If the instrument of acceptance by a successor Trustee
required by Section 6.10 shall not have been delivered to the Trustee within 30
days after the giving of such notice of removal, the removed Trustee may
petition any court of competent jurisdiction for the appointment of a successor
Trustee.

          (3) If at any time:

              (i)  the Trustee shall cease to be eligible under Section 6.8 and
shall fail to resign after written request therefor by the Company or by any
Holder of a Security who has been a bona fide Holder of a Security for at least
six months, or

              (ii) 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

                                      -63-
<PAGE>

officer shall take charge or control of the Trustee or of its property or
affairs for the purpose of rehabilitation, conservation or liquidation, then, in
any such case (i) the Company by a Board Resolution may remove the Trustee, or
(ii) subject to Section 5.14, any Holder of a Security who has been a bona fide
Holder of a Security for at least six months may, on behalf of himself and all
others similarly situated, petition any court of competent jurisdiction for the
removal of the Trustee and the appointment of a successor Trustee.

          (4) If the Trustee shall resign, be removed or become incapable of
acting, or if a vacancy shall occur in the office of Trustee for any cause, the
Company, by a Board Resolution, shall promptly appoint a successor Trustee and
shall comply with the applicable requirements of this Section and Section 6.10.
If, within one year after such resignation, removal or incapability, or the
occurrence of such vacancy, a successor Trustee shall be appointed by Act of the
Holders of a majority in principal amount of the Outstanding Securities
delivered to the Company and the retiring Trustee, the successor Trustee so
appointed shall, forthwith upon its acceptance of such appointment in accordance
with the applicable requirements of Section 6.10, become the successor Trustee
and supersede the successor Trustee appointed by the Company. If no successor
Trustee shall have been so appointed by the Company or the Holders of Securities
and accepted appointment in the manner required by this Section and Section
6.10, any Holder of a Security who has been a bona fide Holder of a Security for
at least six months may, on behalf of himself and all others similarly situated,
petition any court of competent jurisdiction for the appointment of a successor
Trustee.

          (5) The Company shall give notice of each resignation and each removal
of the Trustee and each appointment of a successor Trustee to all Holders of
Securities in the manner provided in Section 1.6. Each notice shall include the
name of the successor Trustee and the address of its Corporate Trust Office.

SECTION 6.10  Acceptance of Appointment by Successor. Every successor Trustee
              --------------------------------------
appointed hereunder shall execute, acknowledge and deliver to the Company and to
the retiring Trustee an instrument accepting such appointment, and thereupon the
resignation or removal of the retiring Trustee shall become effective and such
successor Trustee, without any further act, deed or conveyance, shall become
vested with all the rights, powers, trusts and duties of the retiring Trustee;
but, on the request of the Company or the successor Trustee, such retiring
Trustee shall, upon payment of its charges, execute and deliver an instrument
transferring to such successor Trustee all the rights, powers and trusts of the
retiring Trustee and shall duly assign, transfer and deliver to such successor
Trustee all property and money held by such retiring Trustee hereunder. Upon
request of any such successor Trustee, the Company shall execute any and all
instruments for more fully and

                                      -64-
<PAGE>

certainly vesting in and confirming to such successor Trustee all such rights,
powers and trusts. Notwithstanding the replacement of the Trustee pursuant to
this Section 6.10, the Company's obligations under Section 6.7 hereof shall
continue for the benefit of the retiring Trustee.

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

SECTION 6.11  Merger, Conversion, Consolidation or Succession to Business. Any
              -----------------------------------------------------------
corporation into which the Trustee may be merged or converted or with which it
may be consolidated, or any corporation resulting from any merger, conversion or
consolidation to which the Trustee shall be a party, or any corporation
succeeding to all or substantially all of the corporate trust business of the
Trustee (including the trust created by this Indenture), shall be the successor
of the Trustee hereunder, provided such corporation shall be otherwise eligible
under this Article, without the execution or filing of any paper or any further
act on the part of any of the parties hereto. In case any Securities shall have
been authenticated, but not delivered, by the Trustee then in office, any
successor by merger, conversion or consolidation to such authenticating Trustee
may adopt such authentication and deliver the Securities so authenticated with
the same effect as if such successor Trustee had itself authenticated such
Securities.

SECTION 6.12  Authenticating Agents. The Trustee may, with the consent of the
              ---------------------
Company, appoint an Authenticating Agent or Agents acceptable to the Company
with respect to the Securities which shall be authorized to act on behalf of the
Trustee to authenticate Securities issued upon exchange or substitution pursuant
to this Indenture.

     Securities authenticated by an Authenticating Agent shall be entitled to
the benefits of this Indenture and shall be valid and obligatory for all
purposes as if authenticated by the Trustee hereunder, and every reference in
this Indenture to the authentication and delivery of Securities by the Trustee
or the Trustee's certificate of authentication shall be deemed to include
authentication and delivery on behalf of the Trustee by an Authenticating Agent
and a certificate of authentication executed on behalf of the Trustee by an
Authenticating Agent. Each Authenticating Agent shall be subject to acceptance
by the Company and shall at all times be a corporation organized and doing
business under the laws of the United States of America, any State thereof or
the District of Columbia, authorized under such laws to act as Authenticating
Agent and subject to supervision or examination by government or other fiscal
authority. If at any time an Authenticating Agent shall cease to be eligible in
accordance with the provisions of this Section 6.12, such Authenticating Agent
shall resign immediately in the manner and with the effect specified in this
Section 6.12.

     Any corporation into which an Authenticating Agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which such Authenticating Agent
shall be a party, or any corporation succeeding to the corporate agency or
corporate trust business of an Authenticating Agent, shall continue to be an

                                      -65-
<PAGE>

Authenticating Agent, provided such corporation shall be otherwise eligible
under this Section 6.12, without the execution or filing of any paper or any
further act on the part of the Trustee or the Authenticating Agent.

     An Authenticating Agent may resign at any time by giving written notice
thereof to the Trustee and to the Company. The Trustee may at any time terminate
the agency of an Authenticating Agent by giving written notice thereof to such
Authenticating Agent and to the Company. Upon receiving such a notice of
resignation or upon such a termination, or in case at any time such
Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section 6.12, the Trustee may appoint a successor
Authenticating Agent which shall be subject to acceptance by the Company. Any
successor Authenticating Agent upon acceptance of its appointment hereunder
shall become vested with all the rights, powers and duties of its predecessor
hereunder, with like effect as if originally named as an Authenticating Agent.
No successor Authenticating Agent shall be appointed unless eligible under the
provisions of this Section 6.12.

     The Company agrees to pay to each Authenticating Agent from time to time
reasonable compensation for its services under this Section 6.12.

     If an Authenticating Agent is appointed with respect to the Securities
pursuant to this Section 6.12, the Securities may have endorsed thereon, in
addition to or in lieu of the Trustee's certification of authentication, an
alternative certificate of authentication in the following form:

                                      -66-
<PAGE>

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

                                    CHASE MANHATTAN BANK AND TRUST
                                    COMPANY, NATIONAL ASSOCIATION,
                                    as Trustee

                                    By:____________________________
                                    As Authenticating Agent

                                    By:
                                    _______________________________
                                    Authorized Signatory

                                      -67-
<PAGE>

SECTION 6.13  Disqualification; Conflicting Interests. If the Trustee has or
              ---------------------------------------
shall acquire a conflicting interest within the meaning of the Trust Indenture
Act, the Trustee shall either eliminate such interest or resign, to the extent
and in the manner provided by, and subject to the provisions of, the Trust
Indenture Act and this Indenture.

SECTION 6.14  Preferential Collection of Claims Against Company. If and when the
              -------------------------------------------------
Trustee shall be or become a creditor of the Company (or any other obligor upon
the Securities), the Trustee shall be subject to the provisions of the Trust
Indenture Act regarding the collection of claims against the Company (or any
such other obligor).

                                  ARTICLE VII

             CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 7.1   Company May Consolidate, Etc., Only on Certain Terms.
              ----------------------------------------------------

     The Company shall not consolidate with or merge into any other Person or
convey, transfer or lease all its properties and assets substantially as an
entirety to any Person, and the Company shall not permit any Person to
consolidate with or merge into the Company or convey, transfer, sell or lease
such Person's properties and assets substantially as an entirety to the Company
unless:

          (1) the Person formed by such consolidation or into or with which the
Company is merged or the Person to which the properties and assets of the
Company are so conveyed, transferred, sold or leased shall be a corporation,
limited liability company, partnership or trust organized and validly existing
under the laws of the United States of America, any State thereof or the
District of Columbia and, if other than the Company, shall expressly assume, by
an indenture supplemental hereto, executed and delivered to the Trustee, in form
satisfactory to the Trustee, the due and punctual payment of the principal of,
premium, if any, and interest (including Liquidated Damages, if any) on all of
the Securities as applicable, and the performance or observance of every
covenant of this Indenture on the part of the Company to be performed or
observed and shall have provided for conversion rights in accordance with
Article XII;

          (2) immediately after giving effect to such transaction, no Event of
Default, and no event that after notice or lapse of time or both, would become
an Event of Default, shall have occurred and be continuing; and

          (3) the Company has delivered to the Trustee an Officers' Certificate
and an Opinion of Counsel, each stating that such consolidation, merger,
conveyance, transfer or lease and,

                                      -68-
<PAGE>

if a supplemental indenture is required in connection with such transaction,
such supplemental indenture comply with this Article and that all conditions
precedent herein provided for relating to such transaction have been complied
with, together with any documents required under Section 8.3.

SECTION 7.2   Successor Substituted. Upon any consolidation of the Company with,
              ---------------------
or merger of the Company into any other Person or any conveyance, transfer or
lease of all or substantially all the properties and assets of the Company in
accordance with Section 7.1, the successor Person formed by such consolidation
or into or with which the Company is merged or to which such conveyance,
transfer or lease is made shall succeed to, and be substituted for, and may
exercise every right and power of, the Company under this Indenture with the
same effect as if such successor Person had been named as the Company herein,
and thereafter, except in the case of a lease, the predecessor Person shall be
relieved of all obligations and covenants under this Indenture and the
Securities.

                                 ARTICLE VIII

                            SUPPLEMENTAL INDENTURES

SECTION 8.1   Supplemental Indentures Without Consent of Holders of Securities.
              ----------------------------------------------------------------
Without the consent of any Holders of Securities the Company, when authorized by
a Board Resolution, and the Trustee, at any time and from time to time, may
enter into one or more indentures supplemental hereto for any of the following
purposes:

          (1) to evidence the succession of another Person to the Company and
the assumption by any such successor of the covenants and obligations of the
Company herein and in the Securities as permitted by Article VII of this
Indenture; or

          (2) to add to the covenants of the Company for the benefit of the
Holders of Securities or to surrender any right or power herein conferred upon
the Company; or

          (3) to secure the Securities; or

          (4) to make provision with respect to the conversion rights of Holders
of Securities pursuant to Section 12.11 or to make provision with respect to the
repurchase rights of Holders of Securities pursuant to Section 14.5; or

          (5) to make any changes or modifications to this Indenture necessary
in connection with the registration of any Registrable Securities under the
Securities Act as

                                      -69-
<PAGE>

contemplated by Section 10.11, provided such action pursuant to this clause (5)
shall not adversely affect the interests of the Holders of Securities; or

          (6) to comply with the requirements of the Trust Indenture Act or the
rules and regulations of the Commission thereunder in order to effect or
maintain the qualification of this Indenture under the Trust Indenture Act, as
contemplated by this Indenture or otherwise; or

          (7) to evidence and provide for the acceptance of appointment
hereunder by a successor Trustee; or

          (8) subject to Section 13.12, to make any change in Article XIII that
would limit or terminate the benefits available to any holder of Senior
Indebtedness under such Article; or

          (9) to cure any ambiguity, to correct or supplement any provision
herein which may be inconsistent with any other provision herein or which is
otherwise defective, or to make any other provisions with respect to matters or
questions arising under this Indenture as the Company and the Trustee may deem
necessary or desirable, provided such action pursuant to this clause (9) shall
not adversely affect the interests of the Holders of Securities in any material
respect.

     Upon Company Request, accompanied by a Board Resolution authorizing the
execution of any such supplemental indenture, and subject to and upon receipt by
the Trustee of the documents described in Section 8.3 hereof, the Trustee shall
join with the Company in the execution of any supplemental indenture authorized
or permitted by the terms of this Indenture and to make any further appropriate
agreements and stipulations which may be therein contained.

SECTION 8.2  Supplemental Indentures with Consent of Holders of Securities.
             -------------------------------------------------------------
With either (i) the written consent of the Holders of not less than a majority
in principal amount of the Outstanding Securities, by the Act of said Holders
delivered to the Company and the Trustee, or (ii) by the adoption of a
resolution, at a meeting of Holders of the Outstanding Securities at which a
quorum is present, by the Holders of at least 66-2/3% in principal amount of the
Outstanding Securities represented at such meeting, the Company, when authorized
by a Board Resolution, and the Trustee may enter into an indenture or indentures
supplemental hereto for the purpose of adding any provisions to or changing in
any manner or eliminating any of the provisions of this Indenture or of
modifying in any manner the rights of the Holders of Securities under this
Indenture; provided, however, that no such supplemental indenture shall, without
the consent or affirmative vote of the Holder of each Outstanding Security
affected thereby,

          (1) change the Stated Maturity of the principal of, or any installment
of interest on, any Security, or reduce the principal amount of, or the premium,
if any, or the rate of interest payable thereon, or reduce the amount payable
upon a redemption or mandatory repurchase, or change the place or currency of
payment of the principal of, premium, if any, or interest on any

                                      -70-
<PAGE>

Security (including any payment of Liquidated Damages or Redemption Price or
Repurchase Price in respect of such Security) or impair the right to institute
suit for the enforcement of any payment in respect of any Security on or after
the Stated Maturity thereof (or, in the case of redemption or any repurchase, on
or after the Redemption Date or Repurchase Date, as the case may be) or, except
as permitted by Section 12.11, adversely affect the right of Holders to convert
any Security as provided in Article XII, or modify the provisions of this
Indenture with respect to the subordination of the Securities in a manner
adverse to the Holders; or

          (2) reduce the requirements of Section 9.4 for quorum or voting, or
reduce the percentage in principal amount of the Outstanding Securities the
consent of whose Holders is required for any such supplemental indenture or the
consent of whose Holders is required for any waiver (of compliance with certain
provisions of this Indenture or certain defaults hereunder and their
consequences) provided for in this Indenture; or

          (3) modify the obligation of the Company to maintain an office or
agency in the Borough of Manhattan, The City of New York, pursuant to Section
10.2; or

          (4) modify any of the provisions of this Section or Section 5.13 or
10.13, except to increase any percentage contained herein or therein or to
provide that certain other provisions of this Indenture cannot be modified or
waived without the consent of the Holder of each Outstanding Security affected
thereby; or

          (5) adversely affect the right of Holders to require the Company to
repurchase any Note other than as provided in Article XIV; or

          (6) modify any of the provisions of Section 10.9.

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

                                      -71-
<PAGE>

SECTION 8.3  Execution of Supplemental Indentures. In executing, or accepting
             ------------------------------------
the additional trusts created by, any supplemental indenture permitted by this
Article or the modifications thereby of the trusts created by this Indenture,
the Trustee shall be entitled to receive, and (subject to Sections 6.1 and 6.3)
shall be fully protected in relying upon, an Opinion of Counsel stating that the
execution of such supplemental indenture is authorized or permitted by this
Indenture, and that such supplemental indenture has been duly authorized,
executed and delivered by the Company and constitutes a valid and legally
binding obligation of the Company enforceable against the Company in accordance
with its terms. The Trustee may, but shall not be obligated to, enter into any
such supplemental indenture which affects the Trustee's own rights, duties or
immunities under this Indenture or otherwise.

SECTION 8.4  Effect of Supplemental Indentures. Upon the execution of any
             ---------------------------------
supplemental indenture under this Article, this Indenture shall be modified in
accordance therewith, and such supplemental indenture shall form a part of this
Indenture for all purposes; and every Holder of Securities theretofore or
thereafter authenticated and delivered hereunder appertaining thereto shall be
bound thereby.

SECTION 8.5  Reference in Securities to Supplemental Indentures. Securities
             --------------------------------------------------
authenticated and delivered after the execution of any supplemental indenture
pursuant to this Article may, and shall if required by the Trustee, bear a
notation in form approved by the Trustee as to any matter provided for in such
supplemental indenture. If the Company shall so determine, new Securities so
modified as to conform, in the opinion of the Company and the Trustee, to any
such supplemental indenture may be prepared and executed by the Company and
authenticated and delivered by the Trustee in exchange for Outstanding
Securities.

SECTION 8.6  Notice of Supplemental Indentures. Promptly after the execution by
             ---------------------------------
the Company and the Trustee of any supplemental indenture pursuant to the
provisions of Section 8.1, the Company shall give notice to all Holders of
Securities of such fact, setting forth in general terms the substance of such
supplemental indenture, in the manner provided in Section 1.6. Any failure of
the Company to give such notice, or any defect therein, shall not in any way
impair or affect the validity of any such supplemental indenture.

                                  ARTICLE IX

                       MEETINGS OF HOLDERS OF SECURITIES

SECTION 9.1  Purposes for Which Meetings May Be Called. A meeting of Holders of
             -----------------------------------------
Securities may be called at any time and from time to time pursuant to this
Article to make, give or

                                      -72-
<PAGE>

take any request, demand, authorization, direction, notice, consent, waiver or
other action provided by this Indenture to be made, given or taken by Holders of
Securities.

SECTION 9.2    Call, Notice and Place of Meetings. The Trustee may at any time
               ----------------------------------
call a meeting of Holders of Securities for any purpose specified in Section
9.1, to be held at such time and at such place in the Borough of Manhattan, The
City of New York, as the Trustee shall determine. Notice of every meeting of
Holders of Securities, 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
given, in the manner provided in Section 1.6, not less than 21 nor more than 180
days prior to the date fixed for the meeting.

          (1)  In case at any time the Company, pursuant to a Board Resolution,
or the Holders of at least 10% in principal amount of the Outstanding Securities
shall have requested the Trustee to call a meeting of the Holders of Securities
for any purpose specified in Section 9.1, 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 21 days after
receipt of such request or shall not thereafter proceed to cause the meeting to
be held as provided herein, then the Company or the Holders of Securities in the
amount specified, as the case may be, may determine the time and the place in
the Borough of Manhattan, The City of New York, for such meeting and may call
such meeting for such purposes by giving notice thereof as provided in paragraph
(1) of this Section.

SECTION 9.3    Persons Entitled to Vote at Meetings. To be entitled to vote at
               ------------------------------------
any meeting of Holders of Securities, a Person shall be (i) a Holder of one or
more Outstanding Securities on the date of such meeting, or (ii) a Person
appointed by an instrument in writing as proxy for a Holder or Holders of one or
more Outstanding Securities by such Holder or Holders. The only Persons who
shall be entitled to be present or to speak at any meeting of Holders shall be
the Persons entitled to vote at such meeting and their counsel, any
representatives of the Trustee and its counsel and any representatives of the
Company and its counsel.

SECTION 9.4    Quorum; Action. The Persons entitled to vote a majority in
               --------------
principal amount of the Outstanding Securities shall 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 Holders of Securities,
be dissolved. In any other case, the meeting may be adjourned for a period of
not less than 10 days as determined by the 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 not less
than 10 days as determined by the chairman of the meeting prior to the
adjournment of such adjourned meeting (subject to repeated applications of this
sentence). Notice of the reconvening of any adjourned meeting shall be given as
provided in Section 9.2(1), except that such notice need be given only once not
less than five days prior to the date on

                                      -73-
<PAGE>

which the meeting is scheduled to be reconvened. Notice of the reconvening of an
adjourned meeting shall state expressly the percentage of the principal amount
of the Outstanding Securities which shall constitute a quorum.

     Subject to the foregoing, at the reconvening of any meeting adjourned for a
lack of a quorum, the Persons entitled to vote 25% in principal amount of the
Outstanding Securities at the time shall constitute a quorum for the taking of
any action set forth in the notice of the original meeting.

     At a meeting or an adjourned meeting duly reconvened and at which a quorum
is present as aforesaid, any resolution and all matters (except as limited by
the proviso to Section 8.2 and except to the extent Section 10.13 requires a
different vote) shall be effectively passed and decided if passed or decided by
the lesser of (i) the Holders of not less than a majority in principal amount of
Outstanding Securities and (ii) the Persons entitled to vote not less than 66-
2/3% in principal amount of Outstanding Securities represented and entitled to
vote at such meeting.

     Any resolution passed or decisions taken at any meeting of Holders of
Securities duly held in accordance with this Section shall be binding on all the
Holders of Securities whether or not present or represented at the meeting. The
Trustee shall, in the name and at the expense of the Company, notify all the
Holders of Securities of any such resolutions or decisions pursuant to Section
1.6.

SECTION 9.5    Determination of Voting Rights; Conduct and Adjournment of
               ----------------------------------------------------------
Meetings. Notwithstanding any other provisions of this Indenture, the Trustee
--------
may make such reasonable regulations as it may deem advisable for any meeting of
Holders of Securities in regard to proof of the holding of 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 deem appropriate. Except as otherwise permitted or
required by any such regulations, the holding of Securities shall be proved in
the manner specified in Section 1.4 and the appointment of any proxy shall be
proved in the manner specified in Section 1.4 or by having the signature of the
Person executing the proxy guaranteed by any bank, broker or other eligible
institution participating in a recognized medallion signature guarantee program.

          (1)  The Trustee shall, by an instrument in writing, appoint a
temporary chairman (which may be the Trustee) of the meeting, unless the meeting
shall have been called by the Company or by Holders of Securities as provided in
Section 9.2(1), in which case the Company or the Holders of Securities calling
the meeting, as the case may be, shall in like manner appoint a temporary
chairman. A permanent chairman and a permanent secretary of the meeting shall be
elected by vote of the Persons entitled to vote a majority in principal amount
of the Outstanding Securities represented at the meeting.

                                      -74-
<PAGE>

          (2)  At any meeting, each Holder of a Security or proxy shall be
entitled to one vote for each $1,000 principal amount of Securities held or
represented by him; provided, however, that no vote shall be cast or counted at
any meeting in respect of any 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, except as a Holder of a Security or proxy.

          (3)  Any meeting of Holders of Securities duly called pursuant to
Section 9.2 at which a quorum is present may be adjourned from time to time by
Persons entitled to vote a majority in principal amount of the Outstanding
Securities represented at the meeting, and the meeting may be held as so
adjourned without further notice.

SECTION 9.6    Counting Votes and Recording Action of Meetings. The vote upon
               -----------------------------------------------
any resolution submitted to any meeting of Holders of Securities shall be by
written ballots on which shall be subscribed the signatures of the Holders of
Securities or of their representatives by proxy and the principal amounts at
Stated Maturity and serial numbers of the Outstanding 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 duplicate of all votes cast at the meeting. A
record, at least in duplicate, of the proceedings of each meeting of Holders of
Securities 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 given as provided in Section 9.2 and, if
applicable, Section 9.4. Each copy shall be signed and verified by the
affidavits of the permanent chairman and secretary of the meeting and one such
copy shall be delivered to the Company and another 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.

                                   ARTICLE X

                                   COVENANTS

                                      -75-
<PAGE>

SECTION 10.1  Payment of Principal, Premium and Interest. The Company covenants
              ------------------------------------------
and agrees that it will duly and punctually pay the principal of and premium, if
any, and interest (including Liquidated Damages, if any) on the Securities in
accordance with the terms of the Securities and this Indenture. The Company will
deposit or cause to be deposited with the Trustee, no later than the opening of
business on the date of the Stated Maturity of any Security or no later than the
opening of business on the due date for any installment of interest, all
payments so due, which payments shall be in immediately available funds on the
date of such Stated Maturity or due date, as the case may be.

SECTION 10.2  Maintenance of Offices or Agencies. The Company will maintain in
              ----------------------------------
the Borough of Manhattan, The City of New York, an office or agency where the
Securities may be surrendered for registration of transfer or exchange or for
presentation for payment or for conversion, redemption or repurchase and where
notices and demands to or upon the Company in respect of the Securities and this
Indenture may be served. The Company will give prompt written notice to the
Trustee of the location, and any change in the location, of such office or
agency not designated or appointed by the Trustee. If at any time the Company
shall fail to maintain any such required office or agency or shall fail to
furnish the Trustee with the address thereof, such presentations, surrenders,
notices and demands may be made or served at the Corporate Trust Office or the
office or agency of the Trustee in the Borough of Manhattan, The City of New
York, and the Company hereby appoints the Trustee as its agent to receive all
such presentations, surrenders, notices and demands.

     The Company may at any time and from time to time vary or terminate the
appointment of any such agent or appoint any additional agents for any or all of
such purposes; provided, however, that until all of the Securities have been
delivered to the Trustee for cancellation, or moneys sufficient to pay the
principal of, premium, if any, and interest on the Securities have been made
available for payment and either paid or returned to the Company pursuant to the
provisions of Section 10.3, the Company will maintain in the Borough of
Manhattan, The City of New York, an office or agency where Securities may be
presented or surrendered for payment and conversion, which shall initially be
the Trustee, where Securities may be surrendered for registration of transfer or
exchange and where notices and demands to or upon the Company in respect of the
Securities and this Indenture may be served. The Company will give prompt
written notice to the Trustee, and notice to the Holders in accordance with
Section 1.6, of the appointment or termination of any such agents and of the
location and any change in the location of any such office or agency.

     The Company hereby initially designates the Trustee as Paying Agent,
Security Registrar and Conversion Agent, and each of the Corporate Trust Office
of the Trustee and the office or agency of the Trustee in the Borough of
Manhattan, The City of New York, located at 55 Water Street, Room 234 North,
Corporate Trust Securities Window, New York, New York 10041, attention: Exodus
Communications, Inc. 4 3/4% Convertible Subordinated Notes due July 15, 2008
one such office or agency of the Company for each of the aforesaid purposes.

                                      -76-
<PAGE>

SECTION 10.3   Money for Security Payments to Be Held in Trust. If the Company
               -----------------------------------------------
shall act as its own Paying Agent, it will, on or before each due date of the
principal of, premium, if any, or interest on any of the Securities, segregate
and hold in trust for the benefit of the Persons entitled thereto a sum
sufficient to pay the principal, premium, if any, or interest so becoming due
until such sums shall be paid to such Persons or otherwise disposed of as herein
provided and the Company will promptly notify the Trustee of its action or
failure so to act.

     Whenever the Company shall have one or more Paying Agents, it will, no
later than the opening of business on each due date of the principal of,
premium, if any, or interest on any Securities, deposit with the Trustee a sum
in funds immediately payable on the payment date sufficient to pay the
principal, premium, if any, or interest so becoming due, such sum to be held for
the benefit of the Persons entitled to such principal, premium, if any, or
interest, and (unless such Paying Agent is the Trustee) the Company will
promptly notify the Trustee of any failure so to act.

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

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

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

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

     The Company may at any time, for the purpose of obtaining the satisfaction
and discharge of this Indenture or for any other purpose, pay, or by Company
Order direct any Paying Agent to pay, to the Trustee all sums held in trust by
the Company or such Paying Agent, such sums to be held by the Trustee upon the
same trusts as those upon which such sums were held by the Company or such
Paying Agent; and, upon such payment by any Paying Agent to the Trustee, such
Paying Agent shall be released from all further liability with respect to such
money.

     Any money deposited with the Trustee or any Paying Agent, or then held by
the Company, in trust for the payment of the principal of, premium, if any, or
interest on any Security and remaining unclaimed for two years after such
principal, premium, if any, or interest has become due and payable shall be paid
to the Company on Company Request, or (if then held by the Company) shall be
discharged from such trust; and the Holder of such Security shall thereafter, as
an unsecured general creditor, look only to the Company for payment thereof, and
all liability of the Trustee or

                                      -77-
<PAGE>

such Paying Agent with respect to such trust money, and all liability of the
Company as trustee thereof, shall thereupon cease.

SECTION 10.4  Existence. Subject to Article VII, the Company will do or cause to
              ---------
be done all things necessary to preserve and keep in full force and effect its
existence, rights (charter and statutory) and franchises; provided, however,
that the Company shall not be required to preserve any such right or franchise
if the Company shall determine that the preservation thereof is no longer
desirable in the conduct of the business of the Company and that the loss
thereof is not disadvantageous in any material respect to the Holders.

SECTION 10.5  Maintenance of Properties. The Company will cause all properties
              -------------------------
used or useful in the conduct of its business or the business of any Significant
Subsidiary to be maintained and kept in good condition, repair and working order
and supplied with all necessary equipment and will cause to be made all
necessary repairs, renewals, replacements, betterments and improvements thereof,
all as in the judgment of the Company may be necessary so that the business
carried on in connection therewith may be properly and advantageously conducted
at all times; provided, however, that nothing in this Section shall prevent the
Company from discontinuing the operation or maintenance of any of such
properties if such discontinuance is, in the judgment of the Company, desirable
in the conduct of its business or the business of any Significant Subsidiary and
not disadvantageous in any material respect to the Holders.

SECTION 10.6  Payment of Taxes and Other Claims. The Company will pay or
              ---------------------------------
discharge, or cause to be paid or discharged, before the same may become
delinquent, (i) all taxes, assessments and governmental charges levied or
imposed upon the Company or any Significant Subsidiary or upon the income,
profits or property of the Company or any Significant Subsidiary, (ii) all
claims for labor, materials and supplies which, if unpaid, might by law become a
lien or charge upon the property of the Company or any Significant Subsidiary,
and (iii) all stamps and other duties, if any, which may be imposed by the
United States or any political subdivision thereof or therein in connection with
the issuance, transfer, exchange or conversion of any Securities or with respect
to this Indenture; provided, however, that, in the case of clauses (i) and (ii),
the Company shall not be required to pay or discharge or cause to be paid or
discharged any such tax, assessment, charge or claim (A) if the failure to do so
will not, in the aggregate, have a material adverse impact on the Company, or
(B) if the amount, applicability or validity is being contested in good faith by
appropriate proceedings.

SECTION 10.7  Registration and Listing. The Company (i) will effect all
              ------------------------
registrations with, and obtain all approvals by, all governmental authorities
that may be necessary under any United States Federal or state law (including
the Securities Act, the Exchange Act and state securities and Blue Sky laws)
before the shares of Common Stock issuable upon conversion of Securities are
issued and delivered, and qualified or listed as contemplated by clause (ii) (it
being understood that

                                      -78-
<PAGE>

the Company shall not be required to register the Securities under the
Securities Act, except pursuant to the Registration Rights Agreement referred to
in Section 10.11); and (ii) will qualify the shares of Common Stock required to
be issued and delivered upon conversion of Securities, prior to such issuance or
delivery, for quotation on the Nasdaq National Market or, if the Common Stock is
not then quoted on the Nasdaq National Market, list the Common Stock on each
national securities exchange or quotation system on which outstanding Common
Stock is listed or quoted at the time of such delivery.

     Nothing in this Section will limit the application of Section 10.11.

SECTION 10.8   Statement by Officers as to Default. The Company shall deliver to
               -----------------------------------
the Trustee, within 120 days after the end of each fiscal year of the Company
ending after the date hereof, an Officers' Certificate, stating whether or not
to the best knowledge of the signers thereof the Company is in default in the
performance and observance of any of the terms, provisions and conditions of
this Indenture (without regard to any period of grace or requirement of notice
provided hereunder) and, if the Company shall be in default, specifying all such
defaults and the nature and status thereof of which they may have knowledge.

     The Company will deliver to the Trustee, forthwith upon becoming aware of
any default under this Indenture or any Event of Default, an Officers'
Certificate specifying with particularity such default or Event of Default and
further stating what action the Company has taken, is taking or proposes to take
with respect thereto.  For the purpose of this Section, the term "default"
includes any event which is, or after notice or lapse of time or both would
become, an Event of Default.

     Any notice required to be given under this Section 10.8 shall be delivered
to the Trustee at its Corporate Trust Office.

SECTION 10.9   Delivery of Certain Information. At any time when the Company is
               -------------------------------
not subject to Section 13 or 15(d) of the Exchange Act, upon the request of a
Holder of a Restricted Security or the holder of shares of Common Stock issued
upon conversion thereof, the Company will promptly furnish or cause to be
furnished Rule 144A Information (as defined below) to such Holder of Restricted
Securities or such holder of shares of Common Stock issued upon conversion of
Restricted Securities, or to a prospective purchaser of any such security
designated by any such Holder or holder, as the case may be, to the extent
required to permit compliance by such Holder or holder with Rule 144A under the
Securities Act (or any successor provision thereto) in connection with the
resale of any such security; provided, however, that the Company shall not be
required to furnish such information in connection with any request made on or
after the date which is two years from the later of (i) the date such a security
(or any such predecessor security) was last acquired from the Company or (ii)
the date such a security (or any such predecessor security) was last acquired
from an "affiliate" of the Company within the meaning of Rule 144 under the
Securities Act (or any

                                      -79-
<PAGE>

successor provision thereto). "Rule 144A Information" shall be such information
as is specified pursuant to Rule 144A(d)(4) under the Securities Act (or any
successor provision thereto).

SECTION 10.10  Resale of Certain Securities. During the period beginning on the
               ----------------------------
last date of original issuance of the Securities and ending on the date that is
two years from such date (or such shortened period under Rule 144(k) under the
Securities Act or any successor rule), the Company will not, and will use all
reasonable efforts to ensure that its "affiliates" (as defined under Rule 144
under the Securities Act or any successor provision thereto) do not, resell (i)
any Securities which constitute "restricted securities" under Rule 144 or (ii)
any securities into which the Securities have been converted under this
Indenture which constitute "restricted securities" under Rule 144, that in
either case have been reacquired by any of them. The Trustee shall have no
responsibility in respect of the Company's performance of its agreement in the
preceding sentence.

SECTION 10.11  Registration Rights. The Company agrees that the Holders from
               -------------------
time to time of Registrable Securities (as defined below) are entitled to the
benefits of a Registration Rights Agreement. Pursuant to the Registration Rights
Agreement, the Company has agreed for the benefit of the holders from time to
time of the Registrable Securities that it will, at its expense, (i) within 90
days after the Issue Date (as defined below) of the Securities, file a shelf
registration statement (the "Shelf Registration Statement") with the Commission
with respect to resales of the Registrable Securities, (ii) use all reasonable
efforts to cause such Shelf Registration Statement to be declared effective by
the Commission within 180 days after the Issue Date of the Securities, provided,
however that the Company may, upon written notice to all the Holders, postpone
having the Shelf Registration Statement declared effective if the Company
possesses material non-public information, the disclosure of which would have a
material adverse effect on the Company and its subsidiaries taken as a whole and
(iii) use all reasonable efforts to maintain such Shelf Registration Statement
effective under the Securities Act until the second annual anniversary of the
date it is declared effective or such earlier date as is provided in the
Registration Rights Agreement (the "Effectiveness Period"). The Company will be
permitted to suspend the use of the prospectus which is a part of the Shelf
Registration Statement during certain periods of time as provided in the
Registration Rights Agreement.

     If (i) on or prior to 90 days following the Issue Date of the Securities, a
Shelf Registration Statement has not been filed with the Commission, or (ii)
subject to the Company's right to postpone effectiveness as set forth in the
immediately preceding paragraph, on or prior to the 180th day following the
Issue Date of the Securities, such Shelf Registration Statement is not declared
effective (each, a "Registration Default"), additional interest ("Liquidated
Damages") will accrue on the Restricted Securities from and including the day
following such Registration Default to but excluding the day on which such
Registration Default has been cured. Liquidated Damages will be paid semi-
annually in arrears, with the first semi-annual payment due on the first
Interest Payment Date, as applicable, in respect of the Restricted Securities
following the date on which such

                                      -80-
<PAGE>

Liquidated Damages begin to accrue, and will accrue at a rate per annum equal to
an additional one-quarter of one percent (0.25%) of the principal amount of the
Restricted Securities to and including the 90th day following such Registration
Default and at a rate per annum equal to one-half of one percent (0.50%) thereof
from and after the 91st day following such Registration Default. Pursuant to the
Registration Rights Agreement, in the event that the Shelf Registration
Statement ceases to be effective (or the Holders of Registrable Securities are
otherwise prevented or restricted by the Company from effecting sales pursuant
thereto) (an "Effective Failure") during the Effectiveness Period for more than
45 days, whether or not consecutive, during any 90 day period, or for more than
90 days, whether or not consecutive, during any 12-month period, then the
interest rate borne by the Restricted Securities shall increase by an additional
one-half of one percent (0.50%) per annum from the 46th day of the applicable 90
day period or the 91/st/ day of the applicable 12-month period, as the case may
be, until such time as the Effective Failure is cured.

     Whenever in this Indenture there is mentioned, in any context, the payment
of the principal of, premium, if any, or interest on, or in respect of, any
Security, such mention shall be deemed to include mention of the payment of
Liquidated Damages provided for in this Section to the extent that, in such
context, Liquidated Damages are, were or would be payable in respect thereof
pursuant to the provisions of this Section and express mention of the payment of
Liquidated Damages (if applicable) in any provisions hereof shall not be
construed as excluding Liquidated Damages in those provisions hereof where such
express mention is not made.

     For the purposes of the Registration Rights Agreement, "Registrable
Securities" means all or any portion of the Restricted Securities issued from
time to time under this Indenture and the shares of Common Stock issuable upon
conversion or repurchase of such Restricted Securities, except any such
Restricted Security or share of Common Stock issuable upon conversion or
repurchase thereof which (i) has been effectively registered under the
Securities Act and sold in a manner contemplated by the Shelf Registration
Statement, (ii) has been transferred in compliance with Rule 144 under the
Securities Act (or any successor provision thereto) or is transferable pursuant
to paragraph (k) of such Rule 144 (or any successor provision thereto) or (iii)
otherwise has been transferred and a new Security or share of Common Stock not
subject to transfer restrictions under the Securities Act has been delivered by
or on behalf of the Company in accordance with Section 3.5 of this Indenture.

     If a Security, or the shares of Common Stock issuable upon conversion of a
Security, is a Registrable Security, and the Holder thereof elects to sell such
Registrable Security pursuant to the Shelf Registration Statement then, by its
acceptance thereof, the Holder of such Registrable Security will have agreed to
be bound by the terms of the Registration Rights Agreement relating to the
Registrable Securities which are the subject of such election.

                                      -81-
<PAGE>

     For the purposes of the Registration Rights Agreement, the term "Holder"
includes any Person that has a beneficial interest in any Restricted Global
Security or any beneficial interest in a global security representing shares of
Common Stock issuable upon conversion of a Security.

SECTION 10.12  Use of Proceeds.  The Company shall use the net proceeds of the
               ---------------
sale of any Securities issued under this Indenture (other than the first $300.0
million of such Securities) to finance the purchase or other acquisition of any
property, inventory, asset or business directly or indirectly, by the Company or
any Restricted Subsidiary used in, or to be used in, the System and Network
Management Business, or for such other purposes as may be permitted by the 1998
Indenture (as defined in Section 6.5 hereof). "Restricted Subsidiary" shall mean
any subsidiary of the Company that has not been designated an "Unrestricted
Subsidiary" pursuant to the 1998 Indenture. "System and Network Management
Business" means: (i) server and other hardware hosting; (ii) connectivity, data
networking, telecommunications or content for computer or data networks or
systems; (iii) management of computer or data networks or systems; (iv)
technology services, equipment sales or leasing or software licensing for
computer or data networks or systems (including Internet Protocol and any
successor protocol(s) based networks); and (v) businesses reasonably related,
complementary or incidental thereto.

SECTION 10.13  Waiver of Certain Covenants. The Company may omit in any
               ---------------------------
particular instance to comply with any covenant or condition set forth in
Sections 10.4 (other than with respect to the existence of the Company (subject
to Article VII)), 10.5 and 10. 6, inclusive (other than a covenant or condition
which under Article VIII cannot be modified or amended without the consent of
the Holder of each Outstanding Security affected), if before the time for such
compliance the Holders shall, through the written consent of not less than a
majority in principal amount of the Outstanding Securities, or the adoption of a
resolution at a meeting of Holders of the Outstanding Securities at which a
quorum is present by 66-2/3% in principal amount of Outstanding Securities
represented and entitled to vote at such meeting, either waive such compliance
in such instance or generally waive compliance with such covenant or condition,
but no such waiver shall extend to or affect such covenant or condition except
to the extent so expressly waived, and, until such waiver shall become
effective, the obligations of the Company and the duties of the Trustee or any
Paying or Conversion Agent in respect of any such covenant or condition shall
remain in full force and effect.

                                  ARTICLE XI

                           REDEMPTION OF SECURITIES

SECTION 11.1  Right of Redemption.
              -------------------

     The Securities may be redeemed in accordance with the provisions of the
form of Securities set forth in Section 2.2.

                                      -82-
<PAGE>

SECTION 11.2  Applicability of Article.  Redemption of Securities at the
              ------------------------
election of the Company or otherwise, as permitted or required by any provision
of the Securities or this Indenture, shall be made in accordance with such
provision and this Article XI.

SECTION 11.3  Election to Redeem; Notice to Trustee.  The election of the
              -------------------------------------
Company to redeem any Securities shall be evidenced by a Board Resolution. In
case of any redemption at the election of the Company of any of the Securities,
the Company shall, at least 30 days prior to the Redemption Date fixed by the
Company (unless a shorter notice shall be satisfactory to the Trustee), notify
the Trustee in writing of such Redemption Date.

SECTION 11.4  Selection by Trustee of Securities to Be Redeemed.  If less than
              -------------------------------------------------
all the Securities are to be redeemed, the particular Securities to be redeemed
shall be selected by the Trustee within five Business Days after it receives the
notice described in 11.3, from the Outstanding Securities not previously called
for redemption, by lot or by such other method as the Trustee may deem fair and
appropriate.

     If any Security selected for partial redemption is converted in part before
termination of the conversion right with respect to the portion of the Security
so selected, the converted portion of such Security shall be deemed (so far as
may be) to be the portion selected for redemption. Securities which have been
converted during a selection of Securities to be redeemed may be treated by the
Trustee as Outstanding for the purpose of such selection.  The Trustee shall
promptly notify the Company and each Security Registrar in writing of the
securities selected for redemption and, in the case of any Securities selected
for partial redemption, the principal amount thereof to be redeemed.

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

SECTION 11.5  Notice of Redemption.  Notice of redemption shall be given in the
              --------------------
manner provided in Section 1.6 to the Holders of Securities to be redeemed not
less than 30 nor more than 60 days prior to the Redemption Date, and such notice
shall be irrevocable. Simultaneously with the giving of notice, the Company
shall issue a Press Release including all relevant information set forth in the
notice.

     All notices of redemption shall state:

          (1)  the Redemption Date,

          (2)  the Redemption Price, and accrued interest (including Liquidated
Damages, if any), if any, to the Redemption Date,

                                      -83-
<PAGE>

          (3)  if less than all Outstanding Securities are to be redeemed, the
aggregate principal amount of Securities to be redeemed and the aggregate
principal amount of Securities which will be outstanding after such partial
redemption,

          (4)  that on the Redemption Date the Redemption Price, and accrued
interest (including Liquidated Damages, if any), if any, to the Redemption Date,
will become due and payable upon each such Security to be redeemed, and that
interest thereon shall cease to accrue on and after said date,

          (5)  the Conversion Rate, the date on which the right to convert the
Securities to be redeemed will terminate and the places where such Securities
may be surrendered for conversion, and

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

     In case of a partial redemption, the notice shall specify the serial and
CUSIP numbers (if any) and the portions thereof called for redemption and that
transfers and exchanges may occur on or prior to the Redemption Date.

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

SECTION 11.6  Deposit of Redemption Price.  On or prior to the Redemption Date,
              ---------------------------
the Company shall deposit with the Trustee (or, if the Company is acting as its
own Paying Agent, segregate and hold in trust as provided in Section 10.3) an
amount of money (which shall be in immediately available funds on such
Redemption Date) sufficient to pay the Redemption Price of, and (except if the
Redemption Date shall be an Interest Payment Date) accrued interest (including
Liquidated Damages, if any) to the Redemption Date on, all the Securities which
are to be redeemed on that date other than any Securities called for redemption
on that date which have been converted prior to the date of such deposit.

     If any Security called for redemption is converted, any money deposited
with the Trustee or so segregated and held in trust for the redemption of such
Security shall (subject to any right of the Holder of such Security or any
Predecessor Security to receive interest as provided in the last paragraph of
Section 3.7) be paid to the Company on Company Request or, if then held by the
Company, shall be discharged from such trust.

                                      -84-
<PAGE>

SECTION 11.7  Securities Payable on Redemption Date.  Notice of redemption
              -------------------------------------
having been given as aforesaid, the Securities so to be redeemed shall, on the
Redemption Date, become due and payable at the Redemption Price therein
specified and from and after such date (unless the Company shall default in the
payment of the Redemption Price, including accrued interest) such Securities
shall cease to bear interest. Upon surrender of any Security for redemption in
accordance with said notice such Security shall be paid by the Company at the
Redemption Price together with accrued and unpaid interest (including Liquidated
Damages, if any) to the Redemption Date; provided, however, that installments of
interest on Securities whose Stated Maturity is on or prior to the Redemption
Date shall be payable to the Holders of such Securities, or one or more
Predecessor Securities, registered as such on the relevant Record Date according
to their terms and the provisions of Section 3.7.

     If any Security called for redemption shall not be so paid upon surrender
thereof for redemption, the principal amount of, premium, if any, and, to the
extent permitted by applicable law, accrued interest on such Security shall,
until paid, bear interest from the Redemption Date at a rate of 6 3/4% per annum
and such Security shall remain convertible until the Redemption Price of such
Security (or portion thereof, as the case may be) shall have been paid or duly
provided for.

     Any Security which is to be redeemed only in part shall be surrendered at
the Corporate Trust Office or an office or agency of the Company designated for
that purpose pursuant to Section 10.2 (with, if the Company or the Trustee so
requires, due endorsement by, or a written instrument of transfer in form
satisfactory to the Company and the Trustee duly executed by, the Holder thereof
or his attorney duly authorized in writing), and the Company shall execute, and
the Trustee shall authenticate and make available for delivery to the Holder of
such Security without service charge, a new Security or Securities, of any
authorized denomination as requested by such Holder, in aggregate principal
amount equal to and in exchange for the unredeemed portion of the principal of
the Security so surrendered.

SECTION 11.8  Conversion Arrangement on Call for Redemption.  In connection with
              ---------------------------------------------
any redemption of Securities, the Company may arrange for the purchase and
conversion of any Securities by an agreement with one or more investment bankers
or other purchasers (the "Purchasers") to purchase such securities by paying to
the Trustee in trust for the Holders, on or before the Redemption Date, an
amount not less than the applicable Redemption Price, together with interest
accrued to the Redemption Date, of such Securities. Notwithstanding anything to
the contrary contained in this Article XI, the obligation of the Company to pay
the Redemption Price, together with interest accrued to the Redemption Date,
shall be deemed to be satisfied and discharged to the extent such amount is so
paid by such Purchasers. If such an agreement is entered into (a copy of which
shall be filed with the Trustee prior to the close of business on the Business
Day immediately prior to the Redemption Date), any Securities called for
redemption that are not duly surrendered for conversion by the Holders thereof
may, at the option of the Company, be

                                      -85-
<PAGE>

deemed, to the fullest extent permitted by law, and consistent with any
agreement or agreements with such Purchasers, to be acquired by such Purchasers
from such Holders and (notwithstanding anything to the contrary contained in
Article XII) surrendered by such Purchasers for conversion, all as of
immediately prior to the close of business on the Redemption Date (and the right
to convert any such Securities shall be extended through such time), subject to
payment of the above amount as aforesaid. At the direction of the Company, the
Trustee shall hold and dispose of any such amount paid to it by the Purchasers
to the Holders in the same manner as it would monies deposited with it by the
Company for the redemption of Securities. Without the Trustee's prior written
consent, no arrangement between the Company and such Purchasers for the purchase
and conversion of any Securities shall increase or otherwise affect any of the
powers, duties, responsibilities or obligations of the Trustee as set forth in
this Indenture, and the Company agrees to indemnify the Trustee from, and hold
it harmless against, any loss, liability or expense arising out of or in
connection with any such arrangement for the purchase and conversion of any
Securities between the Company and such Purchasers, including the costs and
expenses, including reasonable legal fees, incurred by the Trustee in the
defense of any claim or liability arising out of or in connection with the
exercise or performance of any of its powers, duties, responsibilities or
obligations under this Indenture.

                                  ARTICLE XII

                           CONVERSION OF SECURITIES

SECTION 12.1  Conversion Privilege and Conversion Rate.  Subject to and upon
              ----------------------------------------
compliance with the provisions of this Article, at the option of the Holder
thereof, any Security may be converted into fully paid and nonassessable shares
(calculated as to each conversion to the nearest 1/100th of a share) of Common
Stock of the Company at the Conversion Rate, determined as hereinafter provided,
in effect at the time of conversion. Such conversion right shall commence on the
date the Securities are issued and expire at the close of business on the date
of Maturity, subject, in the case of conversion of any Global Security, to any
Applicable Procedures. In case a Security or portion thereof is called for
redemption at the election of the Company or the Holder thereof exercises his
right to require the Company to repurchase the Security, such conversion right
in respect of the Security, or portion thereof so called, shall expire at the
close of business on the Business Day next preceding such Redemption Date or the
Repurchase Date, as the case may be, unless the Company defaults in making the
payment due upon redemption or repurchase, as the case may be (in each case
subject as aforesaid to any Applicable Procedures with respect to any Global
Security).

     The rate at which shares of Common Stock shall be delivered upon conversion
(herein called the "Conversion Rate") shall be initially 7.1017 shares of Common
Stock for each $1,000 principal amount of Securities. The Conversion Rate shall
be adjusted in certain instances as provided in this Article XII.

                                      -86-
<PAGE>

SECTION 12.2  Exercise of Conversion Privilege.  In order to exercise the
              --------------------------------
conversion privilege, the Holder of any Security to be converted shall surrender
such Security, duly endorsed in blank, at any office or agency of the Company
maintained for that purpose pursuant to Section 10.2, accompanied by a duly
signed conversion notice substantially in the form set forth in Section 2.4
stating that the Holder elects to convert such Security or, if less than the
entire principal amount thereof is to be converted, the portion thereof to be
converted. Each Security surrendered for conversion (in whole or in part) during
the Record Date Period shall (except in the case of any Security or portion
thereof which has been called for redemption on a Redemption Date occurring
within the period beginning on such Regular Record Date and ending on the date
three Business Days after the next succeeding Interest Payment Date) be
accompanied by payment in New York Clearing House funds or other funds
acceptable to the Company of an amount equal to the interest payable on such
Interest Payment Date on the principal amount of such Security (or part thereof,
as the case may be) being surrendered for conversion. The interest so payable on
such Interest Payment Date with respect to any Security (or portion thereof, if
applicable) which is surrendered for conversion during the Record Date Period
shall be paid to the Holder of such Security as of such Regular Record Date in
an amount equal to the interest that would have been payable on such Security if
such Security had been converted as of the close of business on such Interest
Payment Date. Interest payable in respect of any Security surrendered for
conversion on or after an Interest Payment Date shall be paid to the Holder of
such Security as of the next preceding Regular Record Date, notwithstanding the
exercise of the right of conversion. Except as provided in this paragraph, no
cash payment or adjustment shall be made upon any conversion on account of any
interest accrued from the Interest Payment Date next preceding the conversion
date, in respect of any Security (or part thereof, as the case may be)
surrendered for conversion, or on account of any dividends on the Common Stock
issued upon conversion. The Company's delivery to the Holder of the number of
shares of Common Stock (and cash in lieu of fractions thereof, as provided in
this Indenture) into which a Security is convertible will be deemed to satisfy
the Company's obligation to pay the principal amount of the Security.

     Securities shall be deemed to have been converted immediately prior to the
close of business on the day of surrender of such Securities for conversion in
accordance with the foregoing provisions, and at such time the rights of the
Holders of such Securities as Holders shall cease, and the Person or Persons
entitled to receive the Common Stock issuable upon conversion shall be treated
for all purposes as the record holder or holders of such Common Stock at such
time. As promptly as practicable on or after the conversion date, the Company
shall issue and deliver to the Trustee, for delivery to the Holder, a
certificate or certificates for the number of full shares of Common Stock
issuable upon conversion, together with payment in lieu of any fraction of a
share, as provided in Section 12.3.

     All shares of Common Stock delivered upon such conversion of Restricted
Securities shall bear restrictive legends substantially in the form of the
legends required to be set forth on the

                                      -87-
<PAGE>

Restricted Securities pursuant to Section 3.5 and shall be subject to the
restrictions on transfer provided in such legends. Neither the Trustee nor any
agent maintained for the purpose of such conversion shall have any
responsibility for the inclusion or content of any such restrictive legends on
such Common Stock; provided, however, that the Trustee or any agent maintained
for the purpose of such conversion shall have provided, to the Company or to the
Company's transfer agent for such Common Stock, prior to or concurrently with a
request to the Company to deliver such Common Stock, written notice that the
Securities delivered for conversion are Restricted Securities.

     In the case of any Security which is converted in part only, upon such
conversion the Company shall execute and the Trustee shall authenticate and
deliver to the Holder thereof, at the expense of the Company, a new Security or
Securities of authorized denominations in an aggregate principal amount equal to
the unconverted portion of the principal amount of such Security. A Security may
be converted in part, but only if the principal amount of such Security to be
converted is any integral multiple of $1,000 and the principal amount of such
security to remain Outstanding after such conversion is equal to $1,000 or any
integral multiple of $1,000 in excess thereof.

     If shares of Common Stock to be issued upon conversion of a Restricted
Security, or Securities to be issued upon conversion of a Restricted Security in
part only, are to be registered in a name other than that of the beneficial
owner of such Restricted Security, then such Holder must deliver to the
Conversion Agent a Surrender Certificate, dated the date of surrender of such
Restricted Security and signed by such beneficial owner, as to compliance with
the restrictions on transfer applicable to such Restricted Security. Neither the
Trustee nor any Conversion Agent, Registrar or Transfer Agent shall be required
to register in a name other than that of the beneficial owner, shares of Common
Stock or Securities issued upon conversion of any such Restricted Security not
so accompanied by a properly completed Surrender Certificate.

SECTION 12.3  Fractions of Shares.
              -------------------

     No fractional shares of Common Stock shall be issued upon conversion of any
Security or Securities. If more than one Security shall be surrendered for
conversion at one time by the same Holder, the number of full shares which shall
be issuable upon conversion thereof shall be computed on the basis of the
aggregate principal amount of the Securities (or specified portions thereof) so
surrendered. Instead of any fractional share of Common Stock which would
otherwise be issuable upon conversion of any Security or Securities (or
specified portions thereof), the Company shall calculate and pay a cash
adjustment in respect of such fraction (calculated to the nearest 1/100th of a
share) in an amount equal to the same fraction of the Closing Price Per Share at
the close of business on the day of conversion.

                                      -88-
<PAGE>

SECTION 12.4   Adjustment of Conversion Rate.  The Conversion Rate shall be
               -----------------------------
subject to adjustments from time to time as follows:

          (1)  In case the Company shall pay or make a dividend or other
distribution on shares of any class of Common Stock payable in shares of Common
Stock (including the Announced Split (as hereinafter defined)), the Conversion
Rate in effect at the opening of business on the day following the date fixed
for the determination of shareholders entitled to receive such dividend or other
distribution (except in the case of the Announced Split which shall be at the
opening of business on December 14, 1999) shall be increased by dividing such
Conversion Rate by a fraction of which the numerator shall be the number of
shares of Common Stock outstanding at the close of business on the date fixed
for such determination and the denominator shall be the sum of such number of
shares and the total number of shares constituting such dividend or other
distribution, such increase to become effective immediately after the opening of
business on the day following the date fixed for such determination. If, after
any such date fixed for determination, any dividend or distribution is not in
fact paid, the Conversion Rate shall be immediately readjusted, effective as of
the date the Board of Directors determines not to pay such dividend or
distribution, to the Conversion Rate that would have been in effect if such
determination date had not been fixed. For the purposes of this paragraph (1),
the number of shares of Common Stock at any time outstanding shall not include
shares held in the treasury of the Company but shall include shares issuable in
respect of scrip certificates issued in lieu of fractions of shares of Common
Stock. The Company will not pay any dividend or make any distribution on shares
of Common Stock held in the treasury of the Company. The "Announced Split" shall
be the two-for-one stock split in the form of a stock dividend announced by the
Company on November 19, 1999, payable December 14, 1999 to holders of Common
Stock of the Company of record as of November 30, 1999.

          (2)  In case the Company shall issue rights, options or warrants to
all holders of its Common Stock entitling them to subscribe for or purchase
shares of Common Stock at a price per share less than the current market price
per share (determined as provided in paragraph (8) of this Section 12.4) of the
Common Stock on the date fixed for the determination of stockholders entitled to
receive such rights, options or warrants (other than any rights, options or
warrants that by their terms will also be issued to any Holder upon conversion
of a Security into shares of Common Stock without any action required by the
Company or any other Person), the Conversion Rate in effect at the opening of
business on the day following the date fixed for such determination shall be
increased by dividing such Conversion Rate by a fraction of which the numerator
shall be the number of shares of Common Stock outstanding at the close of
business on the date fixed for such determination plus the number of shares of
Common Stock which the aggregate of the offering price of the total number of
shares of Common Stock so offered for subscription or purchase would purchase at
such current market price and the denominator shall be the number of shares of
Common Stock outstanding at the close of business on the date fixed for such
determination plus the number of shares of Common Stock so offered for
subscription or purchase, such increase to become effective immediately after

                                      -89-
<PAGE>

the opening of business on the day following the date fixed for such
determination. If, after any such date fixed for determination, any such rights,
options or warrants are not in fact issued, or are not exercised prior to the
expiration thereof, the Conversion Rate shall be immediately readjusted,
effective as of the date such rights, options or warrants expire, or the date
the Board of Directors determines not to issue such rights, options or warrants,
to the Conversion Rate that would have been in effect if the unexercised rights,
options or warrants had never been granted or such determination date had not
been fixed, as the case may be. For the purposes of this paragraph (2), the
number of shares of Common Stock at any time outstanding shall not include
shares held in the treasury of the Company but shall include shares issuable in
respect of scrip certificates issued in lieu of fractions of shares of Common
Stock. The Company will not issue any rights, options or warrants in respect of
shares of Common Stock held in the treasury of the Company.

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

          (4)  In case the Company shall, by dividend or otherwise, distribute
to all holders of its Common Stock evidences of its indebtedness, shares of any
class of capital stock or other assets (including securities, but excluding (i)
any rights, options or warrants referred to in paragraph (2) of this Section,
(ii) any dividend or distribution paid exclusively in cash, (iii) any dividend
or distribution referred to in paragraph (1) of this Section and (iv) mergers or
consolidations to which Section 12.11 applies), the Conversion Rate shall be
adjusted so that the same shall equal the rate determined by dividing the
Conversion Rate in effect immediately prior to the close of business on the date
fixed for the determination of stockholders entitled to receive such
distribution by a fraction of which the numerator shall be the current market
price per share (determined as provided in paragraph (8) of this Section 12.4)
of the Common Stock on the date fixed for such determination less the then fair
market value (as determined by the Board of directors, whose determination shall
be conclusive and described in a Board Resolution filed with the Trustee) of the
portion of the assets, shares or evidences of indebtedness so distributed
applicable to one share of Common Stock and the denominator shall be such
current market price per share of the Common Stock, such adjustment to become
effective immediately prior to the opening of business on the day following the
date fixed for the determination of stockholders entitled to receive such
distribution. If after any such date fixed for determination, any such
distribution is not in fact made, the Conversion Rate shall be immediately
readjusted, effective as of the date of the Board of Directors determines not to
make

                                      -90-
<PAGE>

such distribution, to the Conversion Rate that would have been in effect if such
determination date had not been fixed.

          (5)  In case the Company shall, by dividend or otherwise, distribute
to all holders of its Common Stock cash (excluding any cash that is distributed
as part of a distribution referred to in paragraph (4) of this Section or cash
distributed upon a merger or consolidation to which Section 12.11 applies) in an
aggregate amount that, combined together with (I) the aggregate amount of any
other all-cash distributions to all holders of its Common Stock made exclusively
in cash within the 12 months preceding the date of payment of such distribution
and in respect of which no adjustment pursuant to this paragraph (5) has been
made and (II) the aggregate of any cash plus the fair market value (as
determined by the Board of Directors, whose determination shall be conclusive
and described in a Board Resolution) of other consideration payable in respect
of any tender offer by the Company or any of its Subsidiaries for all or any
portion of the Common Stock concluded within the 12 months preceding the date of
payment of such distribution and in respect of which no adjustment pursuant to
paragraph (6) of this Section 12.4 has been made (the "combined cash and tender
amount") exceeds 10% of the product of the current market price per share
(determined as provided in paragraph (8) of this Section 12.4) of the Common
Stock on the date for the determination of holders of shares of Common Stock
entitled to receive such distribution times the number of shares of Common Stock
outstanding on such date (the "aggregate current market price"), then, and in
each such case, immediately after the close of business on such date for
determination, the Conversion Rate shall be adjusted so that the same shall
equal the rate determined by dividing the Conversion Rate in effect immediately
prior to the close of business on the date fixed for determination of the
stockholders entitled to receive such distribution by a fraction (i) the
numerator of which shall be equal to the current market price per share
(determined as provided in paragraph (8) of this Section) of the Common Stock on
the date fixed for such determination less an amount equal to the quotient of
(x) the excess of such combined cash and tender amount over such aggregate
current market price divided by (y) the number of shares of Common Stock
outstanding on such date for determination and (ii) the denominator of which
shall be equal to the current market price per share (determined as provided in
paragraph (8) of this Section 12.4) of the Common Stock on such date fixed for
determination.

          (6)  In case a tender offer made by the Company or any Subsidiary for
all or any portion of the Common Stock shall expire and such tender offer (as
amended upon the expiration thereof) shall require the payment to stockholders
(based on the acceptance (up to any maximum specified in the terms of the tender
offer) of Purchased Shares (as defined below)) of an aggregate consideration
having a fair market value (as determined by the Board of Directors, whose
determination shall be conclusive and described in a Board Resolution) that
combined together with (I) the aggregate of the cash plus the fair market value
(as determined by the Board of Directors, whose determination shall be
conclusive and described in a Board Resolution), as of the expiration of such
tender offer, of consideration payable in respect of any other tender offer by
the Company or

                                      -91-
<PAGE>

any Subsidiary for all or any portion of the Common Stock expiring within the 12
months preceding the expiration of such tender offer and in respect of which no
adjustment pursuant to this paragraph (6) has been made and (II) the aggregate
amount of any cash distributions to all holders of the Common Stock within 12
months preceding the expiration of such tender offer and in respect of which no
adjustment pursuant to paragraph (5) of this Section has been made (the
"combined tender and cash amount") exceeds 10% of the product of the current
market price per share of the Common Stock (determined as provided in paragraph
(8) of this Section 12.4) as of the last time (the "Expiration Time") tenders
could have been made pursuant to such tender offer (as it may be amended) times
the number of shares of Common Stock outstanding (including any tendered shares)
as of the Expiration Time, then, and in each such case immediately prior to the
opening of business on the day after the date of the Expiration Time, the
Conversion Rate shall be adjusted so that the same shall equal the rate
determined by dividing the Conversion Rate immediately prior to close of
business on the date of the Expiration Time by a fraction (i) the numerator of
which shall be equal to (A) the product of (I) the current market price per
share of the Common Stock (determined as provided in paragraph (8) of this
Section 12.4) on the date of the Expiration Time multiplied by (II) the number
of shares of Common Stock outstanding (including any tendered shares) on the
Expiration Time less (B) the combined tender and cash amount, and (ii) the
denominator of which shall be equal to the product of (A) the current market
price per share of the Common Stock (determined as provided in paragraph (8) of
this Section 12.4) as of the Expiration Time multiplied by (B) the number of
shares of Common Stock outstanding (including any tendered shares) as of the
Expiration Time less the number of all shares validly tendered and not withdrawn
as of the Expiration Time (the shares deemed so accepted up to any such maximum,
being referred to as the "Purchased Shares").

          (7)  The reclassification of Common Stock into securities other than
Common Stock (other than any reclassification upon a consolidation or merger to
which Section 12.11 applies) shall be deemed to involve (a) a distribution of
such securities other than Common Stock to all holders of Common Stock (and the
effective date of such reclassification shall be deemed to be "the date fixed
for the determination of stockholders entitled to receive such distribution" and
"the date fixed for such determination" within the meaning of paragraph (4) of
this Section), and (b) a subdivision or combination, as the case may be, of the
number of shares of Common Stock outstanding immediately prior to such
reclassification into the number of shares of Common Stock outstanding
immediately thereafter (and the effective date of such reclassification shall be
deemed to be "the day upon which such subdivision becomes effective" or "the day
upon which such combination becomes effective", as the case may be, and "the day
upon which such subdivision or combination becomes effective" within the meaning
of paragraph (3) of this Section 12.4).

          (8)  For the purpose of any computation under paragraphs (2), (4), (5)
or (6) of this Section 12.4, the current market price per share of Common Stock
on any date shall be calculated by the Company and be the average of the daily
Closing Prices Per Share for the five consecutive

                                      -92-
<PAGE>

Trading Days selected by the Company commencing not more than 10 Trading Days
before, and ending not later than the earlier of the day in question and the day
before the "ex" date with respect to the issuance or distribution requiring such
computation. For purposes of this paragraph, the term "'ex' date", when used
with respect to any issuance or distribution, means the first date on which the
Common Stock trades regular way in the applicable securities market or on the
applicable securities exchange without the right to receive such issuance or
distribution.

          (9)  No adjustment in the Conversion Rate shall be required unless
such adjustment (plus any adjustments not previously made by reason of this
paragraph (9)) would require an increase or decrease of at least one percent in
such rate; provided, however, that any adjustments which by reason of this
paragraph (9) are not required to be made shall be carried forward and taken
into account in any subsequent adjustment. All calculations under this Article
shall be made to the nearest cent or to the nearest one-hundredth of a share, as
the case may be.

          (10) The Company may make such increases in the Conversion Rate, for
the remaining term of the Securities or any shorter term, in addition to those
required by paragraphs (1), (2), (3), (4), (5) and (6) of this Section 12.4, as
it considers to be advisable in order to avoid or diminish any income tax to any
holders of shares of Common Stock resulting from any dividend or distribution of
stock or issuance of rights or warrants to purchase or subscribe for stock or
from any event treated as such for income tax purposes. The Company shall have
the power to resolve any ambiguity or correct any error in this paragraph (10)
and its actions in so doing shall, absent manifest error, be final and
conclusive.

          (11) Notwithstanding the foregoing provisions of this Section, no
adjustment of the Conversion Rate shall be required to be made (a) upon the
issuance of shares of Common Stock pursuant to any present or future plan for
the reinvestment of dividends or (b) because of a tender or exchange offer of
the character described in Rule 13e-4(h)(5) under the Exchange Act or any
successor rule thereto.

          (12) To the extent permitted by applicable law, the Company from time
to time may increase the Conversion Rate by any amount for any period of time if
the period is at least twenty (20) days, the increase is irrevocable during such
period, and the Board of Directors shall have made a determination that such
increase would be in the best interests of the Company, which determination
shall be conclusive; provided, however, that no such increase shall be taken
into account for purposes of determining (i) whether the Closing Price Per Share
of the Common Stock equals or exceeds 105% of the Conversion Price in connection
with an event which would otherwise be a Change of Control pursuant to Section
14.4, or (ii) whether the Closing Price Per Share of the Common Stock exceeds
140% of the Conversion Price in connection with redemption of the Securities in
accordance with the provisions of the form of Securities set forth in Section
2.2 hereof. Whenever the Conversion Rate is increased pursuant to the preceding
sentence, the Company shall

                                      -93-
<PAGE>

give notice of the increase to the Holders in the manner provided in Section 1.6
at least fifteen (15) days prior to the date the increased Conversion Rate takes
effect, and such notice shall state the increased Conversion Rate and the period
during which it will be in effect.

SECTION 12.5   Notice of Adjustments of Conversion Rate. Whenever the Conversion
               ----------------------------------------
Rate is adjusted as herein provided:

          (1)  the Company shall compute the adjusted Conversion Rate in
accordance with Section 12.4 and shall prepare a certificate signed by the Chief
Financial Officer of the Company setting forth the adjusted Conversion Rate and
showing in reasonable detail the facts upon which such adjustment is based, and
such certificate shall promptly be filed with the Trustee and with each
Conversion Agent; and

          (2)  upon each such adjustment, a notice stating that the Conversion
Rate has been adjusted and setting forth the adjusted Conversion Rate shall be
required, and as soon as practicable after it is required, such notice shall be
provided by the Company to all Holders in accordance with Section 1.6.

     Neither the Trustee nor any Conversion Agent shall be under any duty or
responsibility with respect to any such certificate or the information and
calculations contained therein, except to exhibit the same to any Holder of
Securities desiring inspection thereof at its office during normal business
hours, and shall not be deemed to have knowledge of any adjustment in the
Conversion Rate unless and until a Responsible Officer of the Trustee shall have
received such a certificate.  Until a Responsible Officer of the Trustee
receives such a certificate, the Trustee and each Conversion Agent may assume
without inquiry that the last Conversion Rate of which the Trustee has knowledge
of remains in effect.

SECTION 12.6   Notice of Certain Corporate Action.  In case:
               ----------------------------------

          (1)  the Company shall declare a dividend (or any other distribution)
on its Common Stock payable (i) otherwise than exclusively in cash or (ii)
exclusively in cash in an amount that would require any adjustment pursuant to
Section 12.4; or

          (2)  the Company shall authorize the granting to all or substantially
all of the holders of its Common Stock of rights, options or warrants to
subscribe for or purchase any shares of capital stock of any class or of any
other rights that would require any adjustment pursuant to Section 12.4; or

                                      -94-
<PAGE>

          (3)  of any reclassification of the Common Stock, or of any
consolidation, merger or share exchange to which the Company is a party and for
which approval of any stockholders of the Company is required, or of the
conveyance, sale, transfer or lease of all or substantially all of the assets of
the Company; or

          (4)  of the voluntary or involuntary dissolution, liquidation or
winding up of the Company;

     Then the Company shall cause to be filed at each office or agency
maintained for the purpose of conversion of Securities pursuant to Section 10.2,
and shall cause to be provided to all Holders in accordance with Section 1.6, at
least 20 days (or 10 days in any case specified in clause (1) or (2) above)
prior to the applicable record or effective date hereinafter specified, a notice
stating (x) the date on which a record is to be taken for the purpose of such
dividend, distribution, rights, options or warrants, or, if a record is not to
be taken, the date as of which the holders of Common Stock of record to be
entitled to such dividend, distribution, rights, options or warrants are to be
determined or (y) the date on which such reclassification, consolidation,
merger, conveyance, transfer, sale, lease, dissolution, liquidation or winding
up is expected to become effective, and the date as of which it is expected that
holders of Common Stock of record shall be entitled to exchange their shares of
Common Stock for securities, cash or other property deliverable upon such
reclassification, consolidation, merger, conveyance, transfer, sale, lease,
dissolution, liquidation or winding up. Neither the failure to give such notice
or the notice referred to in the following paragraph nor any defect therein
shall affect the legality or validity of the proceedings described in clauses
(1) through (4) of this Section 12.6. If at the time the Trustee shall not be
the conversion agent, a copy of such notice shall also forthwith be filed by the
Company with the Trustee.

     The Company shall cause to be filed at the Corporate Trust Office and each
office or agency maintained for the purpose of conversion of Securities pursuant
to Section 10.2, and shall cause to be provided to all Holders in accordance
with Section 1.6, notice of any tender offer by the Company or any Subsidiary
for all or any portion of the Common Stock at or about the time that such notice
of tender offer is provided to the public generally.

SECTION 12.7   Company to Reserve Common Stock.  The Company shall at all times
               -------------------------------
reserve and keep available, free from preemptive rights, out of its authorized
but unissued Common Stock, for the purpose of effecting the conversion of
Securities, the full number of shares of Common Stock then issuable upon the
conversion of all Outstanding Securities.

SECTION 12.8   Taxes on Conversions.  Except as provided in the next sentence,
               --------------------
the Company will pay any and all taxes and duties that may be payable in respect
of the issue or delivery of shares of Common Stock on conversion of Securities
pursuant hereto. The Company shall not, however, be required to pay any tax or
duty which may be payable in respect of any transfer involved in the issue and
delivery of shares of Common Stock in a name other than that of the Holder of
the Security or

                                      -95-
<PAGE>

Securities to converted, and no such issue or delivery shall be made unless and
until the Person requesting such issue has paid to the Company the amount of any
such tax or duty, or has established to the satisfaction of the Company that
such tax or duty has been paid.

SECTION 12.9   Covenant as to Common Stock.  The Company agrees that all shares
               ---------------------------
of Common Stock which may be delivered upon conversion of Securities, upon such
delivery, will have been duly authorized and validly issued and will be fully
paid and nonassessable and, except as provided in Section 12.8, the Company will
pay all taxes, liens and charges with respect to the issue thereof.

SECTION 12.10  Cancellation of Converted Securities.  All Securities delivered
               ------------------------------------
for conversion shall be delivered to the Trustee or its agent to be canceled by
or at the direction of the Trustee, which shall dispose of the same as provided
in Section 3.9.

SECTION 12.11  Provision in Case of Consolidation, Merger or Sale of Assets.  In
               ------------------------------------------------------------
case of any consolidation or merger of the Company with or into any other
Person, any merger of another Person with or into the Company (other than a
merger which does not result in any reclassification, conversion, exchange or
cancellation of outstanding shares of Common Stock of the Company) or any
conveyance, sale, transfer or lease of all or substantially all of the assets of
the Company, the Person formed by such consolidation or resulting from such
merger or which acquires such assets, as the case may be, shall execute and
deliver to the Trustee a supplemental indenture providing that the Holder of
each Security then Outstanding shall have the right thereafter, during the
period such Security shall be convertible as specified in Section 12.1, to
convert such Security only into the kind and amount of securities, cash and
other property receivable upon such consolidation, merger, conveyance, sale,
transfer or lease by a holder of the number of shares of Common Stock of the
Company into which such Security might have been converted immediately prior to
such consolidation, merger, conveyance, sale, transfer or lease, assuming such
holder of Common Stock of the Company (i) is not (A) a Person with which the
Company consolidated or merged with or into or which merged into or with the
Company or to which such conveyance, sale, transfer or lease was made, as the
case may be (a "Constituent Person"), or (B) an Affiliate of a Constituent
Person and (ii) failed to exercise his rights of election, if any, as to the
kind or amount of securities, cash and other property receivable upon such
consolidation, merger, conveyance, sale, transfer or lease (provided that if the
kind or amount of securities, cash and other property receivable upon such
consolidation, merger, conveyance, sale, transfer, or lease is not the same for
each share of Common Stock of the Company held immediately prior to such
consolidation, merger, conveyance, sale, transfer or lease by others than a
Constituent Person or an Affiliate thereof and in respect of which such rights
of election shall not have been exercised ("Non-electing Share"), then for the
purpose of this Section 12.11 the kind and amount of securities, cash and other
property receivable upon such consolidation, merger, conveyance, sale, transfer
or lease by the holders of each Non-electing Share shall be deemed to be the
kind and amount so receivable per share by a plurality of the Non-electing

                                      -96-
<PAGE>

Shares). Such supplemental indenture shall provide for adjustments which, for
events subsequent to the effective date of such supplemental indenture, shall be
as nearly equivalent as may be practicable to the adjustments provided for in
this Article. The above provisions of this Section 12.11 shall similarly apply
to successive consolidations, mergers, conveyances, sales, transfers or leases.
Notice of the execution of such a supplemental indenture shall be given by the
Company to the Holder of each Security as provided in Section 1.6 promptly upon
such execution.

     Neither the Trustee nor any Conversion Agent shall be under any
responsibility to determine the correctness of any provisions contained in any
such supplemental indenture relating either to the kind or amount of shares of
stock or other securities or property or cash receivable by Holders of
Securities upon the conversion of their Securities after any such consolidation,
merger, conveyance, transfer, sale or lease or to any such adjustment, but may
accept as conclusive evidence of the correctness of any such provisions, and
shall be protected in relying upon, an Opinion of Counsel with respect thereto,
which the Company shall cause to be furnished to the Trustee upon request.

SECTION 12.12  Rights Issued in Respect of Common Stock.  Rights or warrants
               ----------------------------------------
distributed by the Company to all holders of Common Stock entitling the holders
thereof to subscribe for or purchase shares of the Company's capital stock
(either initially or under certain circumstances), which rights or warrants,
until the occurrence of a specified event or events ("Trigger Event"):

          (1)  are deemed to be transferred with such shares of Common Stock,

          (2)  are not exercisable, and

          (3)  are also issued in respect of future issuances of Common Stock

shall not be deemed distributed for purposes of Section 12.4(2) until the
occurrence of the earliest Trigger Event, whereupon such rights and warrants
shall be deemed to have been distributed and an appropriate adjustment (if any
is required) to the Conversion Price shall be made under this Section 12.4(4).
If any such right or warrant, including any such existing rights or warrants
distributed prior to the date of this Indenture, are subject to events, upon the
occurrence of which such rights or warrants become exercisable to purchase
different securities, evidences of indebtedness or other assets or different
amounts of any of the foregoing, or both, then the date of the occurrence of any
such event shall be deemed to be the date of distribution and record date with
respect to new rights or warrants with such rights (and a termination or
expiration of the existing rights or warrants without exercise by any of the
holders thereof).  In addition, in the event of any distribution of rights or
warrants, or any Trigger Event with respect thereto, that shall have resulted in
an adjustment to the Conversion Rate under Section 12.4(2), (1) in the case of
any such rights or warrants which shall all have been redeemed or repurchased
without exercise by any holders thereof, the Conversion Rate shall be readjusted
upon such final redemption or repurchase to give effect to such distribution or
Trigger Event, as the case may be, as though it were a cash distribution, equal
to the per share

                                      -97-
<PAGE>

redemption or repurchase price received by a holder of Common Stock with respect
to such rights or warrants (assuming such holder had retained such rights or
warrants), made to all holders of Common Stock as of the date of such redemption
or repurchase, and (2) in the case of any such rights or warrants all of which
shall have expired without exercise by any holder thereof, the Conversion Price
shall be readjusted as if such issuance had not occurred.

SECTION 12.13 Responsibility of Trustee for Conversion Provisions.  The
              ---------------------------------------------------
Trustee, subject to the provisions of Section 6.1, and any Conversion Agent
shall not at any time be under any duty or responsibility to any Holder of
Securities to determine whether any facts exist which may require any adjustment
of the Conversion Rate, or with respect to the nature or extent of any such
adjustment when made, or with respect to the method employed, herein or in any
supplemental indenture provided to be employed, in making the same, or whether a
supplemental indenture need be entered into. Neither the Trustee, subject to the
provisions of Section 6.1, nor any Conversion Agent shall be accountable with
respect to the validity or value (or the kind or amount) of any Common Stock, or
of any other securities or property or cash, which may at any time be issued or
delivered upon the conversion of any Security; and it or they do not make any
representation with respect thereto. Neither the Trustee, subject to the
provisions of Section 6.1, nor any Conversion Agent shall be responsible for any
failure of the Company to make or calculate any cash payment or to issue,
transfer or deliver any shares of Common Stock or share certificates or other
securities or property or cash upon the surrender of any Security for the
purpose of conversion; and the Trustee, subject to the provisions of Section
6.1, and any Conversion Agent shall not be responsible for any failure of the
Company to comply with any of the covenants of the Company contained in this
Article.

                                 ARTICLE XIII

                          SUBORDINATION OF SECURITIES

SECTION 13.1  Securities Subordinate to Senior Indebtedness.  The Company
              ---------------------------------------------
covenants and agrees, and each Holder of a Security, by its acceptance thereof,
likewise covenants and agrees, that, to the extent and in the manner hereinafter
set forth in this Article (subject to the provisions of Article IV), the
indebtedness represented by the Securities and the payment of the principal of,
or premium, if any, or interest (including Liquidated Damages, if any) on, each
and all of the Securities (including, but not limited to, the Redemption Price
with respect to the Securities to be called for redemption in accordance with
Article XI or the Repurchase Price with respect to Securities submitted for
repurchase in accordance with Article XIV), are hereby expressly made
subordinate and subject in right of payment to the prior payment in full of all
Senior Indebtedness.

SECTION 13.2  No Payment in Certain Circumstances, Payment over of Proceeds upon
              ------------------------------------------------------------------
              Dissolution, Etc. No payment shall be made with respect to the
              ----------------
principal of, or

                                      -98-
<PAGE>

premium, if any, or interest (including Liquidated Damages, if any) on the
Securities (including, but not limited to, the Redemption Price with respect to
the Securities to be called for redemption in accordance with Article XI or the
Repurchase Price with respect to Securities submitted for repurchase in
accordance with Article XIV), except payments and distributions made by the
Trustee as permitted by Section 13.9, if:

          (1)  a default in the payment of principal, premium, if any, or
interest (including a default under any repurchase or redemption obligation) or
other amounts with respect to any Designated Senior Debt occurs and is
continuing (or, in the case of Designated Senior Debt for which there is a
period of grace, in the event of such a default that continues beyond the period
of grace, if any, specified in the instrument or lease evidencing such
Designated Senior Debt) unless and until such default shall have been cured or
waived or shall have ceased to exist; or

          (2)  any other event of default occurs and is continuing with respect
to Designated Senior Debt that then permits holders of such Designated Senior
default (a "Payment Blockage Notice") from a Representative or holder of
Designated Senior Debt or the Company.

     If the Trustee receives any Payment Blockage Notice pursuant to clause (ii)
above, no subsequent Payment Blockage Notice shall be effective for purposes of
this Section unless and until (A) at least 365 days shall have elapsed since the
initial effectiveness of the immediately prior Payment Blockage Notice, and (B)
all scheduled payments of principal, premium, if any, and interest on the
Securities that have come due have been paid in full in cash. No nonpayment
default that existed or was continuing on the date of delivery of any Payment
Blockage Notice to the Trustee shall be, or be made, the basis for a subsequent
Payment Blockage Notice.

     The Company may and shall resume payments on and distributions in respect
of the Securities upon the earlier of:

          (3)  in the case of a default referred to in clause (i) above, the
date upon which the default is cured or waived or ceases to exist, or

          (4)  in the case of a default referred to in clause (ii) above, the
date upon which the default is cured or waived or ceases to exist or 179 days
pass after notice is received if the maturity of such Designated Senior Debt has
not been accelerated.

     Unless this Article XIII otherwise prohibits the payment or distribution at
the time of such payment or distribution.

     In the event of (a) any insolvency or bankruptcy case or proceeding, or any
receivership, liquidation, reorganization or other similar case or proceeding in
connection therewith, relative to the

                                      -99-
<PAGE>

Company or to its creditors, as such, or to its assets, or (b) any liquidation,
dissolution or other winding up of the Company, whether voluntary or involuntary
and whether or not involving insolvency or bankruptcy, or (c) any assignment for
the benefit of creditors or any other marshaling of assets and liabilities of
the Company, then and in any such event the holders of Senior Indebtedness shall
be entitled to receive payment in full of all amounts due or to become due on or
in respect of all Senior Indebtedness in cash before the Holders of the
Securities are entitled to receive any payment on account of principal of (or
premium, if any) or interest (including any Liquidated Damages) on the
Securities or on account of the purchase, redemption or other acquisition of
Securities, and to that end the holders of Senior Indebtedness shall be entitled
to receive, for application to the payment thereof, any payment or distribution
of any kind or character, whether in cash, property or securities, which may be
payable or deliverable in respect of the Securities in any such case,
proceeding, dissolution, liquidation or other winding up or event.

     In the event that, notwithstanding the foregoing provisions of this
Section, the Trustee or the Holder of any Security shall have received any
payment or distribution of assets of the Company of any kind or character,
whether in cash, securities or other property, before all Senior Indebtedness is
paid in full, and if such fact shall, at or prior to the time of such payment or
distribution, have been made known to the Trustee or, as the case may be, such
Holder, then and in such event such payment or distribution shall be paid over
or delivered forthwith to the trustee in bankruptcy, receiver, liquidating
trustee, custodian, assignee, agent or other Person making payment or
distribution of assets of the Company for application to the payment of all
Senior Indebtedness remaining unpaid, to the extent necessary to pay all Senior
Indebtedness in full, after giving effect to any concurrent payment or
distribution to or for the holders of Senior Indebtedness.

     For purposes of this Article only, the words "cash, property or securities"
shall not be deemed to include shares of capital 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, which shares of stock
or securities are subordinated in right of payment to all then outstanding
Senior Indebtedness to substantially the same extent as, or to a greater extent
than, the Securities are so subordinated as provided in this Article. The
consolidation of the Company with, or the merger of the Company into, another
Person or the liquidation or dissolution of the Company following the conveyance
or transfer of its properties and assets substantially as an entirety to another
Person upon the terms and conditions set forth in Article VII shall not be
deemed a dissolution, winding up, liquidation, reorganization, assignment for
the benefit of creditors or marshaling of assets and liabilities of the Company
for the purposes of this Section if the Person formed by such consolidation or
into which the Company is merged or which acquires by conveyance or transfer
such properties and assets substantially as an entirety, as the case may be,
shall, as a part of such consolidation, merger, conveyance or transfer, comply
with the conditions set forth in Article VII.

                                     -100-
<PAGE>

     In the event that, notwithstanding the foregoing, the Company shall make
any payment to the Trustee or the Holder of any Security prohibited by the
foregoing provisions of this Section, and if such fact shall, at or prior to the
time of such payment, have been made known to the Trustee or, as the case may
be, such Holder, then and in such event such payment shall be paid over and
delivered forthwith to the Company, in the case of the Trustee, or the Trustee,
in the case of such Holder.

SECTION 13.3  Prior Payment to Senior Indebtedness upon Acceleration of
              ---------------------------------------------------------
Securities. In the event of the acceleration of the Securities because of an
----------
Event of Default, no payment or distribution shall be made to the Trustee or any
holder of Securities in respect of the principal of, premium, if any, or
interest (including Liquidated Damages, if any) on the Securities (including,
but not limited to, the Redemption Price with respect to the Securities called
for redemption in accordance with Article XI or the Repurchase Price with
respect to the Securities submitted for repurchase in accordance with Article
XIV), except payments and distributions made by the Trustee as permitted by
Section 13.9, until all Senior Indebtedness has been paid in full in cash or
other payment satisfactory to the holders of Senior Indebtedness or such
acceleration is rescinded in accordance with the terms of this Indenture. If
payment of the Securities is accelerated because of an Event of Default, the
Company shall promptly notify holders of Senior Indebtedness of the
acceleration.

     In the event that, notwithstanding the foregoing, the Company shall make
any payment to the Trustee or the Holder of any Security prohibited by the
foregoing provisions of this Section, and if such fact shall, at or prior to the
time of such payment, have been made known to the Trustee or, as the case may
be, such Holder, then and in such event such payment shall be paid over and
delivered forthwith to the Company, in the case of the Trustee, or the Trustee,
in the case of such Holder.

SECTION 13.4  Payment Permitted If No Default. Nothing contained in this Article
              -------------------------------
or elsewhere in this Indenture or in any of the Securities shall prevent (a) the
Company, at any time except during the pendency of any case, proceeding,
dissolution, liquidation or other winding up, assignment for the benefit of
creditors or other marshaling of assets and liabilities of the Company referred
to in Section 13.2, or during the circumstances referred to in the first
paragraph of Section 13.2, or under the conditions described in Section 13.3,
from making payments at any time of principal of (and premium, if any) or
interest on the Securities, or (b) the application by the Trustee of any money
deposited with it hereunder to the payment of or on account of the principal of
(and premium, if any) or interest on the Securities or the retention of such
payment by the Holders, if, at the time of such application by the Trustee, it
did not have knowledge that such payment would have been prohibited by the
provisions of this Article.

SECTION 13.5  Subrogation to Rights of Holders of Senior Indebtedness. Subject
              -------------------------------------------------------
to the payment in full of all Senior Indebtedness, the Holders of the Securities
shall be subrogated to the extent of the payments or distributions made to the
holders of such Senior Indebtedness pursuant to

                                     -101-
<PAGE>

the provisions of this Article (equally and ratably with the holders of all
indebtedness of the Company which by its express terms is subordinated to other
indebtedness of the Company to substantially the same extent as the Securities
are subordinated and is entitled to like rights of subrogation) to the rights of
the holders of such Senior Indebtedness to receive payments and distributions of
cash, property and securities applicable to the Senior Indebtedness until the
principal of (and premium, if any) and interest on the Securities shall be paid
in full. For purposes of such subrogation, no payments or distributions to the
holders of the Senior Indebtedness of any cash, property or securities to which
the Holders of the Securities or the Trustee would be entitled except for the
provisions of this Article, and no payments over pursuant to the provisions of
this Article to the holders of Senior Indebtedness by Holders of the Securities
or the Trustee, shall, as among the Company, its creditors other than holders of
Senior Indebtedness and the Holders of the Securities, be deemed to be a payment
or distribution by the Company to or on account of the Senior Indebtedness.

SECTION 13.6  Provisions Solely to Define Relative Rights. The provisions of
              -------------------------------------------
this Article are and are intended solely for the purpose of defining the
relative rights of the Holders of the Securities on the one hand and the holders
of Senior Indebtedness on the other hand. Nothing contained in this Article or
elsewhere in this Indenture or in the Securities is intended to or shall (i)
impair, as among the Company, its creditors other than holders of Senior
Indebtedness and the Holders of the Securities, the obligation of the Company,
which is absolute and unconditional, to pay to the Holders of the Securities the
principal of (and premium, if any) and interest (including Liquidated Damages,
if any) on the Securities as and when the same shall become due and payable in
accordance with their terms; or (ii) affect the relative rights against the
Company of the Holders of the Securities and creditors of the Company other than
the holders of Senior Indebtedness; or (iii) prevent the Trustee or the Holder
of any Security from exercising all remedies otherwise permitted by applicable
law upon default under this Indenture, subject to the rights, if any, under this
Article of the holders of Senior Indebtedness to receive cash, property and
securities otherwise payable or deliverable to the Trustee or such Holder.

SECTION 13.7  Trustee to Effectuate Subordination. Each Holder of a Security by
              -----------------------------------
its acceptance thereof authorizes and directs the Trustee on its behalf to take
such action as may be necessary or appropriate to effectuate the subordination
provided in this Article and appoints the Trustee its attorney-in-fact for any
and all such purposes.

SECTION 13.8  No Waiver of Subordination Provisions. No right of any present
              -------------------------------------
or future holder of any Senior Indebtedness 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 non-compliance by the
Company with the terms, provisions and covenants of this Indenture, regardless
of any knowledge thereof any such holder may have or be otherwise charged with.

                                     -102-
<PAGE>

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

SECTION 13.9  Notice to Trustee. The Company shall give prompt written notice to
              -----------------
the Trustee of any fact known to the Company which would prohibit the making of
any payment to or by the Trustee in respect of the Securities. Notwithstanding
the provisions of this Article or any other provision of this Indenture, the
Trustee shall not be charged with knowledge of the existence of any facts which
would prohibit the making of any payment to or by the Trustee in respect of the
Securities, unless and until a Responsible Officer of the Trustee shall have
received written notice thereof from the Company or a Representative or a holder
of Senior Indebtedness (including, without limitation, a holder of Designated
Senior Debt) and, prior to the receipt of any such written notice, the Trustee,
subject to the provisions of Section 6.1, 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 13.9 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 (and premium, if any) or interest (including Liquidated
Damages, if any) on any 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 purpose for which such money was
received and shall not be affected by any notice to the contrary which may be
received by it within one Business Day prior to such date.

     Notwithstanding anything in this Article XIII to the contrary, nothing
shall prevent any payment by the Trustee to the Holders of monies deposited with
it pursuant to Section 4.1, and any such payment shall not be subject to the
provisions of Section 13.2 or 13.3.

     Subject to the provisions of Section 6.1, the Trustee shall be entitled to
rely on the delivery to it of a written notice by a Person representing himself
to be a Representative or a holder of Senior Indebtedness (including, without
limitation, a holder of Designated Senior Debt) to establish that such notice
has been given by a Representative or a holder of Senior Indebtedness
(including, without limitation, a holder of Designated Senior Debt). In the
event that the Trustee determines in

                                     -103-
<PAGE>

good faith that further evidence is required with respect to the right of any
Person as a holder of Senior Indebtedness to participate in any payment or
distribution pursuant to this Article, the Trustee may request such Person to
furnish evidence to the reasonable satisfaction of the Trustee as to the amount
of 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, 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 13.10  Reliance on Judicial Order or Certificate of Liquidating Agent.
               --------------------------------------------------------------
Upon any payment or distribution of assets of the Company referred to in this
Article, the Trustee, subject to the provisions of Section 6.1, and the Holders
of the Securities shall be entitled to rely upon any order or decree entered by
any court of competent jurisdiction in which such insolvency, bankruptcy,
receivership, liquidation, reorganization, dissolution, winding up or similar
case or proceeding is pending, or a certificate of the trustee in bankruptcy,
receiver, liquidating trustee, custodian, assignee for the benefit of creditors,
agent or other Person making such payment or distribution, delivered to the
Trustee or to the Holders of Securities, for the purpose of ascertaining the
Persons entitled to participate in such payment or distribution, the holders of
the 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.

SECTION 13.11  Trustee Not Fiduciary for Holders of Senior Indebtedness. The
               --------------------------------------------------------
Trustee shall not be deemed to owe any fiduciary duty to the holders of Senior
Indebtedness and shall not be liable to any such holders if it shall in good
faith mistakenly pay over or distribute to Holders of Securities or to the
Company or to any other Person cash, property or securities to which any holders
of Senior Indebtedness shall be entitled by virtue of this Article or otherwise.

SECTION 13.12  Reliance by Holders of Senior Indebtedness on Subordination
               -----------------------------------------------------------
Provisions. Each Holder by accepting a Security acknowledges and agrees that the
----------
foregoing subordination provisions are, and are intended to be, an inducement
and a consideration to each holder of any Senior Indebtedness, whether such
Senior Indebtedness was created or acquired before or after the issuance of the
Securities, to acquire and continue to hold, or to continue to hold, such Senior
Indebtedness and such holder of Senior Indebtedness shall be deemed conclusively
to have relied on such subordination provisions in acquiring and continuing to
hold, or in continuing to hold, such Senior Indebtedness, and no amendment or
modification of the provisions contained herein shall diminish the rights of
such holders of Senior Indebtedness unless such holders shall have agreed in
writing thereto.

SECTION 13.13  Rights of Trustee as Holder of Senior Indebtedness; Preservation
               ----------------------------------------------------------------
of Trustee's Rights. The Trustee in its individual capacity shall be entitled to
-------------------
all the rights set forth in this Article with respect to any Senior Indebtedness
which may at any time be held by it,

                                     -104-
<PAGE>

to the same extent as any other holder of Senior Indebtedness, and nothing in
this Indenture shall deprive the Trustee of any of its rights as such holder.

     Nothing in this Article shall apply to claims of, or payments to, the
Trustee under or pursuant to Section 6.7.

SECTION 13.14  Article Applicable to Paying Agents. In case at any time any
               -----------------------------------
Paying Agent other than the Trustee shall have been appointed by the Company and
be then acting hereunder, the term "Trustee" as used in this Article shall in
such case (unless the context otherwise requires) be construed as extending to
and including such Paying Agent within its meaning as fully for all intents and
purposes as if such Paying Agent were named in this Article in addition to or in
place of the Trustee; provided, however, that Section 13.13 shall not apply to
the Company or any Affiliate of the Company if it or such Affiliate acts as
Paying Agent.

SECTION 13.15  Certain Conversions and Repurchases Deemed Payment. For the
               --------------------------------------------------
purposes of this Article only, (i) the issuance and delivery of junior
securities upon conversion of Securities in accordance with Article XII or upon
the repurchase of Securities in accordance with Article XIV shall not be deemed
to constitute a payment or distribution on account of the principal of or
premium or interest (including Liquidated Damages, if any) on Securities or on
account of the purchase or other acquisition of Securities, and (ii) the
payment, issuance or delivery of cash (except in satisfaction of fractional
shares pursuant to Section 12.3), property or securities (other than junior
securities) upon conversion of a Security shall be deemed to constitute payment
on account of the principal of such Security. For the purposes of this Section,
the term "junior securities" means (a) shares of any stock of any class of the
Company and securities into which the Securities are convertible pursuant to
Article XII and (b) securities of the Company which are subordinated in right of
payment to all Senior Indebtedness which may be outstanding at the time of
issuance or delivery of such securities to substantially the same extent as, or
to a greater extent than, the Securities are so subordinated as provided in this
Article. Nothing contained in this Article or elsewhere in this Indenture or in
the Securities is intended to or shall impair, as among the Company, its
creditors other than holders of Senior Indebtedness and the Holders of the
Securities, the right, which is absolute and unconditional, of the Holder of any
Security to convert such Security in accordance with Article XII or to exchange
such Security for Common Stock in accordance with Article XIV if the Company
elects to satisfy the obligations under Article XIV by the delivery of Common
Stock.

                                     -105-
<PAGE>

                                  ARTICLE XIV

             REPURCHASE OF SECURITIES AT THE OPTION OF THE HOLDER

                           UPON A CHANGE IN CONTROL

SECTION 14.1  Right to Require Repurchase. In the event that a Change in Control
              ---------------------------
(as hereinafter defined) shall occur, then each Holder shall have the right, at
the Holder's option, but subject to the provisions of Section 14.2, to require
the Company to repurchase, and upon the exercise of such right the Company shall
repurchase, all of such Holder's Securities not theretofore called for
redemption, or any portion of the principal amount thereof that is equal to any
integral multiple of $1,000 (provided that no single Security may be repurchased
in part unless the portion of the principal amount of such Security to be
Outstanding after such repurchase is equal to $1,000 or integral multiples of
$1,000 in excess thereof), on the date (the "Repurchase Date") specified by the
Company that is not less than 40 nor more than 60 days after the date of the
Offer to Purchase (as defined in Section 14.3) at a purchase price equal to 100%
of the principal amount of the Securities to be repurchased plus interest
accrued to the Repurchase Date (the "Repurchase Price"); provided, however, that
installments of interest on Securities whose Stated Maturity is on or prior to
the Repurchase Date shall be payable to the Holders of such Securities, or one
or more Predecessor Securities, registered as such on the relevant Record Date
according to their terms and the provisions of Section 3.7. Such right to
require the repurchase of the Securities shall not continue after a discharge of
the Company from its obligations with respect to the Securities in accordance
with Article IV, unless a Change in Control shall have occurred prior to such
discharge. At the option of the Company, the Repurchase Price may be paid in
cash or, subject to the fulfillment by the Company of the conditions set forth
Section 14.2, by delivery of shares of Common Stock having a fair market value
equal to the Repurchase Price. Whenever in this Indenture (including Sections
2.2, 3.1 , 5.1(1) and 5.8) there is a reference, in any context, to the
principal of any Security as of any time, such reference shall be deemed to
include reference to the Repurchase Price payable in respect of such Security to
the extent that such Repurchase Price is, was or would be so payable at such
time, and express mention of the Repurchase Price in any provision of this
Indenture shall not be construed as excluding the Repurchase Price in those
provisions of this Indenture when such express mention is not made; provided,
however, that for the purposes of Article XIII such reference shall be deemed to
include reference to the Repurchase Price only to the extent the Repurchase
Price is payable in cash.

                                     -106-
<PAGE>

SECTION 14.2  Conditions to the Company's Election to Pay the Repurchase Price
              ----------------------------------------------------------------
in Common Stock. The Company may elect to pay the Repurchase Price by delivery
---------------
of shares of Common Stock pursuant to Section 14.1 if and only if the following
conditions shall have been satisfied:

          (1)  The shares of Common Stock deliverable in payment of the
Repurchase Price shall have a fair market value as of the Repurchase Date of not
less than the Repurchase Price. For purposes of Section 14.1 and this Section
14.2, the fair market value of shares of Common Stock shall be determined by the
Company and shall be equal to 95% of the average of the Closing Prices Per Share
of the Common Stock for the five consecutive Trading Days immediately preceding
and including the third Trading Day prior to the Repurchase Date;

          (2)  The Repurchase Price shall be paid only in cash in the event any
shares of Common Stock to be issued upon repurchase of Securities hereunder (i)
require registration under any federal securities law before such shares may be
freely transferable without being subject to any transfer restrictions under the
Securities Act upon repurchase and if such registration is not completed or does
not become effective prior to the Repurchase Date, and/or (ii) require
registration with or approval of any governmental authority under any state law
or any other federal law before such shares may be validly issued or delivered
upon repurchase and if such registration is not completed or does not become
effective or such approval is not obtained prior to the Repurchase Date;

          (3)  Payment of the Repurchase Price may not be made in Common Stock
unless such stock is, or shall have been, approved for quotation on the Nasdaq
National Market or listed on a national securities exchange, in either case,
prior to the Repurchase Date; and

          (4)  All shares of Common Stock which may be issued upon repurchase of
Securities will be issued out of the Company's authorized but unissued Common
Stock and, will upon issue, be duly and validly issued and fully paid and non-
assessable and free of any preemptive or similar rights.

     If all of the conditions set forth in this Section 14.2 are not satisfied
in accordance with the terms thereof, the Repurchase Price shall be paid by the
Company only in cash.

SECTION 14.3  Notices; Method of Exercising Repurchase Right, Etc. Unless the
              ---------------------------------------------------
Company shall have theretofore called for redemption all of the Outstanding
Securities, on or before the 30th day after the occurrence of a Change in
Control, the Company or, at the request and expense of the Company on or before
the 15th day after such occurrence, the Trustee, shall give to all Holders of
Securities, in the manner provided in Section 1.6, notice (the "Offer to
Purchase") of the occurrence of the Change of Control and of the repurchase
right set forth herein arising as a result thereof. The Company shall also
deliver a copy of such Offer to Purchase to the Trustee. Simultaneously with

                                     -107-
<PAGE>

giving such notice, the Company shall issue a Press Release including all
relevant information in such notice.

     Each notice of a repurchase right shall state:

               (i)    the Repurchase Date,

               (ii)   the date by which the repurchase right must be exercised
pursuant to Section 14.3(2),

               (iii)  the Repurchase Price, and whether the Repurchase Price
shall be paid by the Company in cash or by delivery of shares of Common Stock,

               (iv)   a description of the procedure which a Holder must follow
to exercise a repurchase right, and the place or places where such Securities
are to be surrendered for payment of the Repurchase Price and accrued interest
(including Liquidated Damages, if any), if any to the Repurchase Date,

               (v)    that on the Repurchase Date the Repurchase Price, and
accrued interest (including liquidated Damages, if any), if any to the
Repurchase Date, will become due and payable upon each such Security designated
by the Holder to be repurchased, and that interest thereon shall cease to accrue
on and after said date,

               (vi)   the Conversion Rate then in effect, the date on which the
right to convert the principal amount of the Securities to be repurchased will
terminate and the place or places where such Securities may be surrendered for
conversion, and

               (vii)  the place or places that the Security certificate with the
Election of Holder to Require Repurchase as specified in Section 2.2 shall be
delivered, and if the Security is a Restricted Securities Certificate the place
or places that the Surrender Certificate required by Section 14.3(9) shall be
delivered.

     No failure of the Company to give the foregoing notices or defect therein
shall limit any Holder's right to exercise a repurchase right or affect the
validity of the proceedings for the repurchase of Securities.

     If any of the foregoing provisions or other provisions of this Article XIV
are inconsistent with applicable law, such law shall govern.

          (2)  To exercise a repurchase right, a Holder shall deliver to the
Trustee on or before the date that is five Business Days prior to the Repurchase
Date of the Offer to Purchase (i) written notice of the Holder's exercise of
such right, which notice shall set forth the name of the

                                     -108-
<PAGE>

Holder, the principal amount of the Securities to be repurchased (and, if any
Security is to repurchased in part, the serial number thereof, the portion of
the principal amount thereof to be repurchased and the name of the Person in
which the portion thereof to remain Outstanding after such repurchase is to be
registered) and a statement that an election to exercise the repurchase right is
being made thereby, and, in the event that the Repurchase Price shall be paid in
shares of Common Stock, the name or names (with addresses) in which the
certificate or certificates for shares of Common Stock shall be issued, and (ii)
the Securities with respect to which the repurchase right is being exercised.
Such written notice shall be irrevocable, except that the right of the Holder to
convert the Securities with respect to which the repurchase right is being
exercised shall continue until the close of business on the Repurchase Date.

          (3)  In the event a repurchase right shall be exercised in accordance
with the terms hereof, the Company shall pay or cause to be paid to the Trustee
the Repurchase Price in cash or shares of Common Stock, as provided above, for
payment to the Holder on the Repurchase Date or, if shares of Common Stock are
to be paid, as promptly after the Repurchase Date as practicable, together with
accrued and unpaid interest to the Repurchase Date payable with respect to the
Securities as to which the repurchase right has been exercised; provided,
however, that installments of interest that mature on or prior to the Repurchase
Date shall be payable in cash to the Holders of such Securities, or one or more
Predecessor Securities, registered as such at the close of business on the
relevant Regular Record Date.

          (4)  If any Security (or portion thereof) surrendered for repurchase
shall not be so paid on the Repurchase Date, the principal amount of such
Security (or portion thereof, as the case may be) shall, until paid, bear
interest to the extent permitted by applicable law from the Repurchase Date at
the rate of 6 3/4% per annum, and each Security shall remain convertible into
Common Stock until the principal of such Security (or portion thereof, as the
case may be) shall have been paid or duly provided for.

          (5)  Any Security which is to be repurchased only in part shall be
surrendered to the Trustee (with, if the Company or the Trustee so requires, due
endorsement by, or a written instrument of transfer in form satisfactory to the
Company and the Trustee duly executed by, the Holder thereof or his attorney
duly authorized in writing), and the Company shall execute, and the Trustee
shall authenticate and make available for delivery to the Holder of such
Security without service charge, a new Security or Securities, containing
identical terms and conditions, each in an authorized denomination in aggregate
principal amount equal to and in exchange for the unrepurchased portion of the
principal of the Security so surrendered.

          (6)  Any issuance of shares of Common Stock in respect of the
Repurchase Price shall be deemed to have been effected immediately prior to the
close of business on the Repurchase Date and the Person or Persons in whose name
or names any certificate or certificates for shares of

                                     -109-
<PAGE>

Common Stock shall be issuable upon such repurchase shall be deemed to have
become on the Repurchase Date the holder or holders of record of the shares
represented thereby; provided, however, that any surrender for repurchase on a
date when the stock transfer books of the Company shall be closed shall
constitute the Person or Persons in whose name or names the certificate or
certificates for such shares are to be issued as the record holder or holders
thereof for all purposes at the opening of business on the next succeeding day
on which such stock transfer books are open. No payment or adjustment shall be
made for dividends or distributions on any Common Stock issued upon repurchase
of any Security declared prior to the Repurchase Date.

          (7)  No fractions of shares shall be issued upon repurchase of
Securities. If more than one Security shall be repurchased from the same Holder
and the Repurchase Price shall be payable in shares of Common Stock, the number
of full shares which shall be issuable upon such repurchase shall be computed on
the basis of the aggregate principal amount of the Securities so repurchased.
Instead of any fractional share of Common Stock which would otherwise be
issuable on the repurchase of any Security or Securities, the Company will
deliver to the applicable Holder its check for the current market value of such
fractional share. The current market value of a fraction of a share is
determined by multiplying the current market price of a full share by the
fraction, and rounding the result to the nearest cent. For purposes of this
Section, the current market price of a share of Common Stock is the Closing
Price Per Share of the Common Stock on the Trading Day immediately preceding the
Repurchase Date.

          (8)  Any issuance and delivery of certificates for shares of Common
Stock on repurchase of Securities shall be made without charge to the Holder of
Securities being repurchased for such certificates or for any tax or duty in
respect of the issuance or delivery of such certificates or the securities
represented thereby; provided, however, that the Company shall not be required
to pay any tax or duty which may be payable in respect of (i) income of the
Holder or (ii) any transfer involved in the issuance or delivery of certificates
for shares of Common Stock in a name other than that of the Holder of the
Securities being repurchased, and no such issuance or delivery shall be made
unless and until the Person requesting such issuance or delivery has paid to the
Company the amount of any such tax or duty or has established, to the
satisfaction of the Company, that such tax or duty has been paid.

          (9)  If shares of Common Stock to be delivered upon repurchase of a
Security are to be registered in a name other than that of the beneficial owner
of such Security, then such Holder must deliver to the Trustee a Surrender
Certificate, dated the date of surrender of such Restricted Security and signed
by such beneficial owner, as to compliance with the restrictions on transfer
applicable to such Restricted Security. Neither the Trustee nor any Registrar or
Transfer Agent or other agents shall be required to register in a name other
than that of the beneficial owner shares of Common Stock issued upon repurchase
of any such Restricted Security not so accompanied by a properly completed
Surrender Certificate.

                                     -110-
<PAGE>

          (10) All Securities delivered for repurchase shall be delivered to the
Trustee to be canceled at the direction of the Trustee, which shall dispose of
the same as provided in Section 3.9.

SECTION 14.4  Certain Definitions. For purposes of this Article XIV,
              -------------------

          (1)  the term "beneficial owner" shall be determined in accordance
with Rule 13d-3, as in effect on the date of the original execution of this
Indenture, promulgated by the Commission pursuant to the Exchange Act;

          (2)  a "Change in Control" shall be deemed to have occurred at the
time, after the original issuance of the Securities, of:

               (i)  the acquisition by any Person (including any syndicate or
group deemed to be a "person" under Section 13(d)(3) of the Exchange Act) of
beneficial ownership, directly or indirectly, through a purchase, merger or
other acquisition transaction or series of transactions, of shares of capital
stock of the Company entitling such person to exercise 50% or more of the total
voting power of all shares of capital stock of the Company entitled to vote
generally in the elections of directors, other than any such acquisition by the
Company, any subsidiary of the Company or any employee benefit plan of the
Company; or

               (ii) any consolidation of the Company with, or merger of the
Company into, any other Person, any merger of another Person into the Company,
or any conveyance, sale, transfer or lease of all or substantially all of the
assets of the Company to another Person (other than (a) any such transaction (x)
which does not result in any reclassification, conversion, exchange or
cancellation of outstanding shares of capital stock of the Company and (y)
pursuant to which the holders of the Common Stock immediately prior to such
transaction have the entitlement to exercise, directly or indirectly, 50% or
more of the total voting power of all shares of capital stock entitled to vote
generally in the election of directors of the continuing or surviving
corporation immediately after such transaction and (b) any merger which is
effected solely to change the jurisdiction of incorporation of the Company and
results in a reclassification, conversion or exchange of outstanding shares of
Common Stock into solely shares of common stock);

provided, however, that a Change in Control shall not be deemed to have occurred
if (I) the Closing Sales Price Per Share of the Common Stock for any five
Trading Days within the period of 10 consecutive Trading Days ending immediately
after the later of the Change in Control or the public announcement of the
Change in Control (in the case of a Change in Control under clause (i) above) or
the period of 10 consecutive Trading Days ending immediately before the Change
in Control (in the case of a Change in Control under clause (ii) above) shall
equal or exceed 105% of the Conversion Price of the Securities in effect on each
such Trading Day, or (II) all of the consideration (excluding cash payments for
fractional shares and cash payments made pursuant to dissenters' appraisal
rights) in a merger or consolidation constituting a Change of Control consists
of shares of

                                     -111-
<PAGE>

common stock traded on a national securities exchange or on the Nasdaq National
Market (or will be so traded or quoted immediately following the Change of
Control).

          (3)  the term "Conversion Price" shall equal $1,000 divided by the
Conversion Rate (rounded to the nearest cent); and

          (4)  for purposes of Section 14.4(2)(i), the term "Person" shall
include any syndicate or group which would be deemed to be a "person" under
Section 13(d)(3) of the Exchange Act, as in effect on the date of the original
execution of this Indenture.

SECTION 14.5  Consolidation, Merger, etc. In the case of any merger,
              --------------------------
consolidation, conveyance, sale, transfer or lease of all or substantially all
of the assets of the Company to which Section 12.11 applies, in which the Common
stock of the Company is changed or exchanged as a result into the right to
receive shares of stock and other securities or property or assets (including
cash) which includes shares of Common Stock of the Company or common stock of
another Person that are, or upon issuance will be, traded on a United States
national securities exchange or approved for trading on an established automated
over-the-counter trading market in the United States and such shares constitute
at the time such change or exchange becomes effective in excess of 50% of the
aggregate fair market value of such shares of stock and other securities,
property and assets (including cash) (as determined by the Company, which
determination shall be conclusive and binding), then the Person formed by such
consolidation or resulting from such merger or combination or which acquires the
properties or assets (including cash) of the Company, as the case may be, shall
execute and deliver to the Trustee a supplemental indenture (which shall comply
with the Trust Indenture Act as in force at the date of execution of such
supplemental indenture) modifying the provisions of this Indenture relating to
the right of Holders to cause the Company to repurchase the Securities following
a Change in Control, including without limitation the applicable provisions of
this Article XIV and the definitions of the Common Stock and Change in Control,
as appropriate, and such other related definitions set forth herein as
determined in good faith by the Company (which determination shall be conclusive
and binding), to make such provisions apply in the event of a subsequent Change
in Control to the common stock and the issuer thereof if different from the
Company and Common Stock of the Company (in lieu of the Company and the Common
Stock of the Company).

                                     -112-
<PAGE>

                                  ARTICLE XV

               HOLDERS LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 15.1  Company to Furnish Trustee Names and Addresses of Holders. The
              ---------------------------------------------------------
Company will furnish or cause to be furnished to the Trustee:

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

          (2)  at such other times as the Trustee may reasonably 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;

provided, however, that no such list need be furnished so long as the Trustee is
acting as Security Registrar.

SECTION 15.2  Preservation of Information. The Trustee shall preserve, in as
              ---------------------------
current a form as is reasonably practicable, the names and addresses of Holders
contained in the most recent list furnished to the Trustee as provided in
Section 15.1 and the names and addresses of Holders received by the Trustee in
its capacity as Security Registrar. The Trustee may destroy any list, if any,
furnished to it as provided in Section 15.1 upon receipt of a new list so
furnished.

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

          (2)  Every Holder of Securities, by receiving and holding the same,
agrees with the Company and the Trustee that neither the Company nor the Trustee
nor any agent of either of them shall be held accountable by reason of any
disclosure of information as to names and addresses of Holders made pursuant to
the Trust Indenture Act.

SECTION 15.3  Reserved. Reports by Trustee.
              --------

          (1)  After this Indenture has been qualified under the Trust Indenture
Act, the Trustee shall transmit to Holders such reports concerning the Trustee
and its actions under this Indenture as may be required pursuant to the Trust
Indenture Act at the times and in the manner provided pursuant thereto.

                                     -113-
<PAGE>

          (2)  After this Indenture has been qualified under the Trust Indenture
Act, a copy of each such report shall, at the time of such transmission to
Holders, be filed by the Trustee with each stock exchange upon which the
Securities are listed, with the Commission and with the Company. The Company
will notify the Trustee when the Securities are listed on any stock exchange or
any delisiting thereof.

SECTION 15.4  Reports by Company. After this Indenture has been qualified under
              ------------------
the Trust Indenture Act, the Company shall file with the Trustee and the
Commission, and transmit to Holders, such information, documents and other
reports, and such summaries thereof, as may be required pursuant to the Trust
Indenture Act at the times and in the manner provided pursuant to such Act;
provided that any such information, documents or reports required to be filed
with the Commission pursuant to Section 13 or 15(d) of the Securities Exchange
Act of 1934 shall be filed with the Trustee within 15 days after the same is so
required to be filed with the Commission.

                                  ARTICLE XVI

        IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS

SECTION 16.1  Indenture and Securities Solely Corporate Obligations. No recourse
              -----------------------------------------------------
for the payment of the principal of or premium, if any, or interest on any
Security 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
Security, or because of the creation of any indebtedness represented thereby,
shall be had against any incorporator, stockholder, employee, agent, officer, or
director or subsidiary, as such, past, present or future, of the Company or of
any successor corporation, whether by virtue of any constitution, statute or
rule of law, or by the enforcement of any assessment or penalty or otherwise; it
being expressly understood that all such liability is hereby waived and released
as a condition of, and as a consideration for, the execution of this Indenture
and the issue of the Securities.

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

                                     -114-
<PAGE>

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

                                    EXODUS COMMUNICATIONS, INC.

                                    By:  /s/ Ellen M. Hancock
                                        ---------------------------------------
                                    Name:    Ellen M. Hancock
                                    Title:   President and CEO

                                    CHASE MANHATTAN BANK AND TRUST
                                     COMPANY, NATIONAL ASSOCIATION,
                                     as Trustee

                                    By:  /s/ Cecil Bobey
                                        ---------------------------------------
                                    Name:    Cecil Bobey
                                    Title:   Assistant Vice President

                        [Signature Page to Indenture]
<PAGE>

             ANNEX A -- Form of Restricted Securities Certificate

     RESTRICTED SECURITIES CERTIFICATE (For transfers pursuant to Section
3.5(2)(ii) and (iii) of the Indenture)

     Chase Manhattan Bank and Trust Company, National Association
     101 California Street, Suite 2725,
     San Francisco CA 94111.

     Re:  4 3/4% CONVERTIBLE SUBORDINATED NOTES DUE JULY 15, 2008 OF EXODUS
          COMMUNICATIONS, INC. (THE "SECURITIES")

     Reference is made to the Indenture, dated as of December 1, 1999 (the
"Indenture"), from Exodus Communications, Inc. (the "Company") to Chase
Manhattan Bank and Trust Company, National Association, as Trustee. Terms used
herein and defined in the Indenture or Rule 144 under the U.S. Securities Act of
1933 (the "Securities Act") are used herein as so defined.

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

     CUSIP No.  _______

     CERTIFICATE No(s).

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

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

<PAGE>

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

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

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

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

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

          (B)  the transfer is occurring after a period of at least two years
has elapsed since the date the Specified Securities were acquired from the
Company or from an affiliate (as such term is defined in Rule 144) of the
Company, whichever is later, and the Owner is not, and during the preceding
three months has not been, an affiliate of the Company.

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

     Dated:

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

     By:________________________________
     Name:______________________________
     Title:_____________________________

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

                                      -2-
<PAGE>

            ANNEX B -- Form of Unrestricted Securities Certificate

                      UNRESTRICTED SECURITIES CERTIFICATE

     (For removal of Restricted Securities Legend pursuant to Section 3.5(3))

     Chase Manhattan Bank and Trust Company, National Association
     101 California Street, Suite 2725,
     San Francisco, CA 94111.

     RE:  4 3/4% CONVERTIBLE SUBORDINATED NOTES DUE JULY 15, 2008 OF
          EXODUS COMMUNICATIONS, INC. (THE "SECURITIES")

     Reference is made to the Indenture, dated as of December 1, 1999 (the
"Indenture"), from Exodus Communications, Inc. (the "Company") to Chase
Manhattan Bank and Trust Company, National Association, as Trustee. Terms used
herein and defined in the Indenture or in Rule 144 under the U.S. Securities Act
of 1933 (the "Securities Act") are used herein as so defined.

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

     CUSIP No.  __________

     CERTIFICATE No(s).

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

     The Owner has requested that the Specified Securities be exchanged for
Securities bearing no Restricted Securities Legend pursuant to Section 3.5(3) of
the Indenture. In connection with such exchange, the Owner hereby certifies that
the exchange is occurring after a

                                      -3-
<PAGE>

period of at least two years has elapsed since the date the Specified Securities
were acquired from the Company or from an "affiliate" (as such term is defined
in Rule 144) of the Company, whichever is later, and the Owner is not, and
during the preceding three months has not been, an affiliate of the Company. The
Owner also acknowledges that any future transfers of the Specified Securities
must comply with all applicable securities laws of the states of the United
States and other jurisdictions.

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

     Dated:____________

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

     By:__________________________
     Name:________________________
     Title:_______________________

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

                                      -2-
<PAGE>

                   ANNEX C -- Form of Surrender Certificate

               In connection with the certification contemplated by Section 12.2
or 14.3(9) relating to compliance with certain restrictions relating to
transfers of Restricted Securities, such certification shall be provided
substantially in the form of the following certificate, with only such changes
thereto as shall be approved by the Company and Goldman, Sachs & Co.:

                                  CERTIFICATE

                          EXODUS COMMUNICATIONS, INC.

                  4 3/4% CONVERTIBLE NOTES DUE JULY 15, 2008

               This is to certify that as of the date hereof with respect to
$________ principal amount of the above-captioned securities surrendered on the
date hereof (the "Surrendered Securities") for registration of transfer, or for
conversion or repurchase where the securities issuable upon such conversion or
repurchase are to be registered in a name other than that of the undersigned
Holder (each such transaction being a "transfer"), the undersigned Holder (as
defined in the Indenture) certifies that the transfer of Surrendered Securities
associated with such transfer complies with the restrictive legend set forth on
the face of the Surrendered Securities for the reason checked below:

               The transfer of the Surrendered Securities complies with Rule 144
          under the United States Securities Act of 1933, as amended (the
          "Securities Act"); or

               The transfer of the Surrendered Securities complies with Rule
          144A under the Securities Act; or

               The transfer of the Surrendered Securities has been made to an
          institution that is an "accredited investor" within the meaning of
          Rule 501(a)(1), (2), (3) or (7) under the Securities Act in a
          transaction exempt from the registration requirements of the
          Securities Act.

     [Name of Holder]

     Dated:_________________
     *To be dated the date of surrender

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