Document:

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                                                                    EXHIBIT 4.11

                   FORM OF SERIES 1998A CONVERTIBLE DEBENTURE

                            PETER KIEWIT SONS', INC.
                             A DELAWARE CORPORATION

Registered Debenture No.                                $
7.35% Convertible Debenture                                Due: October 31, 2010

     PETER KIEWIT SONS', INC., a corporation organized and existing under the
laws of the State of Delaware, and having its principal place of business in the
City of Omaha, Nebraska (hereinafter called the "Corporation"), for the value
received, hereby promises to pay to                or registered assigns
(hereinafter called the "Debentureholder") on October 31, 2010, the principal
sum of           ($          ) Dollars.

     This debenture is one of the 1998A issue of registered convertible
debentures of the Corporation, due October 31, 2010 unless previously redeemed
or converted, limited to the aggregate principal amount of           and No/100
($          ) Dollars, all issued or to be issued pursuant to an indenture,
dated as of July 1, 1986, executed and delivered by Peter Kiewit Sons', Inc.
(now Level 3 Communications, Inc.) ("PKS") and FirstTier Bank, N.A. Omaha, as
trustee, as amended pursuant to a First Supplemental Indenture between the
Corporation, PKS and U.S. Bank National Association (hereinafter referred to as
"Trustee"), as successor trustee dated as of March 31, 1998. Reference is hereby
made to the indenture, and all indentures supplemental thereto, for a
description of the rights, limitations, obligations and immunities of the
Corporation, the holders of the debentures and the Trustee.

          (1) TYPE OF PAYMENT:  Payment of interest and principal shall be in
     any coin or currency of the United States of America which at the time of
     payment shall be legal tender for the payment of public or private debts.

          (2) INTEREST:  Except as hereinafter provided, the Corporation
     promises to pay to the registered owner hereof or his registered assigns,
     interest on the principal sum of this debenture, at the rate of seven and
     thirty five hundredths (7.35%) percent per annum until the Corporation's
     obligation with respect to the payment of the principal amount shall have
     been discharged. Interest shall accrue upon this debenture from the most
     recent date to which interest has been paid, or if no interest has been
     paid, from the date of original issuance. In the event of conversion as
     provided in paragraph (7) hereof, interest shall cease accruing on the
     principal amount of the debenture on June 30, 2003. Interest on this
     debenture shall be paid annually on each November 1st, commencing November
     1, 2000.

          (3) PLACE OF PAYMENT:  The principal and interest on this debenture
     shall be payable at the office of the Corporation in Omaha, Nebraska.

          (4) DEFAULT:  This debenture shall be deemed to be in default whenever
     the principal sum and/or interest becomes payable and remains unpaid for a
     period of sixty (60) days.

          (5) REDEMPTION:  This debenture is subject to redemption at any time
     prior to the date of maturity at its principal amount plus all unpaid
     interest to the date of redemption provided, however, that the entire
     series is redeemed. This debenture may not be redeemed during the
     thirty-one (31) day conversion period provided for in paragraph (7) hereof.
     Redemption shall be preceded by notice thereof, given to the registered
     holder by registered mail no later than ten (10) days preceding the date of
     redemption.

          (6) TRANSFER:  The debenture may be transferred by the registered
     holder at the principal office of the Corporation in Omaha, Nebraska on
     registry books kept for such purpose at such office, upon surrender and
     cancellation of this debenture, and the payment of applicable charges. The
     Corporation and the Trustee may treat the registered holder of this
     debenture as the absolute owner for all purposes.
<PAGE>   2

          (7) CONVERSION:  (a) This debenture is convertible into the $0.01 par
     value common stock ("Common Stock") of the Corporation on the following
     basis: the debenture is not convertible, in whole or in part, for the
     period commencing on the date of issuance and ending on September 30, 2003.
     During the period commencing on October 1, 2003 and ending on October 31,
     2003, the registered holder may convert the entire principal amount of the
     debenture plus a cash payment in the amount of                multiplied by
     the formula value of the Common Stock on the date of conversion, into
               (          ) shares of Common Stock of the Corporation. During
     the period commencing on November 1, 2003 and ending on October 31, 2010,
     the date of maturity, the debenture is not convertible, in whole or in
     part. The conversion privilege shall be deemed exercised by submission of
     the debenture with a written request for conversion during the applicable
     thirty-one (31) day period at the principal office of the Corporation. The
     Corporation shall thereafter, within a sixty (60) day period, issue the
     Common Stock of the Corporation into which the debenture shall have been
     converted. As a condition precedent to the rights of conversion granted in
     this paragraph, the Debentureholder agrees to execute the Corporation's
     applicable Stock Repurchase Agreement. The debenture shall only be
     convertible by the registered holder if the registered holder is otherwise
     eligible to own shares of Common Stock of the Corporation as provided in
     the Corporation's Restated Certificate of Incorporation.

          (b) In case the Corporation shall change the stock issuable upon
     conversion into the same or different number of new shares of the same or
     of any other class or classes, the Debentureholder, upon conversion, shall
     be entitled to receive, in lieu of the old stock which he would have been
     entitled to receive but for such change, a number of shares of the new
     stock equivalent to the number of shares of new stock that would have been
     issued to him in exchange for such number of shares of old stock which he
     would have been entitled to receive if the conversion privilege had been
     exercisable and exercised immediately prior to such change.

          (c) In case at any time or from time to time the Corporation shall
     declare and pay on or in respect of the class of stock issuable upon
     conversion, any dividend of shares of stock of any class or classes, the
     Debentureholder, upon exercising the conversion privilege, after the date
     of record of the holders of stock to whom such stock dividend is payable,
     shall be entitled to receive the shares of stock theretofore issuable upon
     conversion, together with the dividend stock which would have been issuable
     if the conversion privilege had been exercisable and exercised immediately
     prior to the record date.

          (d) The Corporation covenants and agrees that in case it shall
     consolidate or merge with, or shall sell its property as an entirety, or
     substantially as an entirety to any other corporation, proper provision
     will be made as part of the terms of such consolidation, merger or sale,
     that the holder of any convertible debenture will thereafter be entitled to
     convert it into the same kind and amount of securities and any other assets
     as may be issuable or distributable by the terms of such consolidation,
     merger or sale with respect to the number of shares of Common Stock into
     which this debenture is convertible at the time of such consolidation,
     merger or sale; provided, however, that the surviving corporation with
     which the Corporation consolidates, merges or sells its property shall
     succeed to all of the rights provided for in this debenture, including the
     right of redemption.

          (8) SUBORDINATION:  In the payment of their claims, all creditors of
     the Corporation shall rank equally with the holders of convertible
     debentures. All claims of the convertible Debentureholders against earnings
     or assets are hereby made superior to those of stockholders, and the
     Corporation agrees that as long as any of its convertible debentures are
     outstanding, it will not pay any dividends on its stock until all liability
     for unpaid interest on its debentures has been paid. In the event of
     dissolution or liquidation of the Corporation, the holders of all
     debentures shall be entitled to be paid in full, both principal and
     interest, before any assets of the Corporation are distributed to any
     stockholder.

          (9) OWNERSHIP:  The Corporation may treat the registered owner of the
     debenture as the absolute owner of this debenture.

          (10) LIQUIDATION OF LIABILITY:  No recourse shall be had for the
     payment of the principal or interest of this debenture, against any
     incorporator, stockholder, officer, or director, past,

                                        2
<PAGE>   3

     present, or future, of the Corporation, all such liability being expressly
     waived by the owner of this debenture.

          (11) VALIDATION:  This debenture shall not be valid or become
     obligatory for any purpose until the certificate of authentication thereon
     shall have been signed by the Trustee.

     IN WITNESS WHEREOF, Peter Kiewit Sons', Inc. has caused this debenture to
become signed and its corporate seal to be hereunto affixed by its officers duly
authorized thereunto, all as of the                day of             , 2000.

<TABLE>
<S>                                                    <C>
ATTEST:                                                PETER KIEWIT SONS', INC.

-----------------------------------------------------  By --------------------------------------------------
Assistant Secretary                                    President
</TABLE>

TRUSTEE'S CERTIFICATE OF AUTHENTICATION:  This is one of the debentures
described in the Trust Indenture, dated as of July 1, 1986, by and between Peter
Kiewit Sons', Inc. (now Level 3 Communications, Inc.) ("PKS") and FirstTier
Bank, N.A. Omaha, as trustee, as amended pursuant to a First Supplemental
Indenture between the Corporation, PKS and U.S. Bank National Association, as
successor trustee dated as of March 31, 1998.

<TABLE>
<S>                                                    <C>
Dated -----------------------------------------------  By --------------------------------------------------
                                                       Authorized Officer
</TABLE>

This Debenture and the transfer thereof are subject to restrictions which are
stated in an Agreement between the Debentureholder(s) whose name(s) appear(s)
hereon and PETER KIEWIT SONS', INC., dated November 1, 1998.

                                        3<PAGE>   1
                                                                     EXHIBIT 4.4

                                RIGHTS AGREEMENT

                         Dated as of September 29, 2000

                                     Between

                                   AVAYA INC.

                                       and

                              THE BANK OF NEW YORK

                                  Rights Agent
<PAGE>   2
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                Page
<S>                                                                            <C>
SECTION 1.        Certain Definitions                                              1

SECTION 2.        Appointment of Rights Agent                                      7

SECTION 3.        Issue of Right Certificates                                      7

SECTION 4.        Form of Right Certificates                                       9

SECTION 5.        Countersignature and Registration                                9

SECTION 6.        Transfer, Split Up, Combination and
                      Exchange of Right Certificates; Mutilated,
                      Destroyed, Lost or Stolen Right
                      Certificates                                                10

SECTION 7.        Exercise of Rights; Purchase Price;
                      Expiration Date of Rights                                   11

SECTION 8.        Cancellation and Destruction of Right Certificates              13

SECTION 9.        Availability of Preferred Shares                                13

SECTION 10.       Preferred Shares Record Date                                    15

SECTION 11.       Adjustment of Purchase Price, Number
                      of Shares or Number of Rights                               15

SECTION 12.       Certificate of Adjusted Purchase
                      Price or Number of Shares                                   25

SECTION 13.       Consolidation, Merger or Sale or
                      Transfer of Assets or Earning Power                         26

SECTION 14.       Fractional Rights and Fractional Shares                         30

SECTION 15.       Rights of Action                                                32

SECTION 16.       Agreement of Right Holders                                      32
</TABLE>
<PAGE>   3
<TABLE>
<S>                                                                            <C>
SECTION 17.       Right Certificate Holder Not Deemed a Stockholder               33

SECTION 18.       Concerning the Rights Agent                                     33

SECTION 19.       Merger or Consolidation or Change of
                  Name of Rights Agent                                            34

SECTION 20.       Duties of Rights Agent                                          35

SECTION 21.       Change of Rights Agent                                          37

SECTION 22.       Issuance of New Right Certificates                              38

SECTION 23.       Redemption                                                      39

SECTION 24.       Exchange                                                        40

SECTION 25.       Notice of Certain Events                                        41

SECTION 26.       Notices                                                         42

SECTION 27.       Supplements and Amendments                                      43

SECTION 28.       Successors                                                      44

SECTION 29.       Benefits of this Agreement                                      44

SECTION 30.       Severability                                                    44

SECTION 31.       Governing Law                                                   44

SECTION 32.       Counterparts                                                    44

SECTION 33.       Descriptive Headings                                            45
</TABLE>
<PAGE>   4
         Exhibit A - Form of Certificate of Designations
         Exhibit B - Form of Right Certificate
         Exhibit C - Summary of Rights to Purchase Preferred Shares
<PAGE>   5
                           RIGHTS AGREEMENT (the "Agreement"), dated as of
                      September 29, 2000, between AVAYA INC., a Delaware
                      corporation (the "Company"), and THE BANK OF NEW YORK, as
                      Rights Agent (the "Rights Agent").

                  The board of directors of the Company (the "Board of
Directors") has authorized and declared a dividend of one preferred share
purchase right (a "Right") for each Common Share (as hereinafter defined) of the
Company outstanding on September 30, 2000 (the "Record Date"), each Right
representing the right to purchase one one-thousandth of a Preferred Share (as
hereinafter defined), upon the terms and subject to the conditions herein set
forth, and has further authorized and directed the issuance of one Right
(subject to adjustment as provided herein) with respect to each Common Share
that shall become outstanding between the Record Date and the earlier of the
Distribution Date and the Expiration Date (as such terms are hereinafter
defined); provided, however, that Rights may be issued with respect to Common
Shares that shall become outstanding after the Distribution Date and prior to
the Expiration Date in accordance with Section 22.

                  Accordingly, in consideration of the premises and the mutual
agreements herein set forth, the parties hereby agree as follows:

                  SECTION 1.  Certain Definitions.  For purposes of this
Agreement, the following terms have the meanings indicated:
<PAGE>   6
                                                                               2

                  (a)   "Acquiring Person" shall mean any Person who or which,
together with all Affiliates and Associates of such Person, shall be the
Beneficial Owner of 10% or more of the Common Shares of the Company then
outstanding, but shall not include (i) the Company, any Subsidiary of the
Company, any employee benefit or compensation plan of the Company or of any
Subsidiary of the Company, or any Person holding Common Shares for or pursuant
to the terms of any such plan, or prior to the Spinoff Date, any Lucent Entity
(each, an "Exempt Person") or (ii) any such Person who has become and is the
Beneficial Owner of 10% or more of the Common Shares of the Company then
outstanding solely as a result of (A) the acquisition by such Person or one or
more of its Affiliates or Associates of Beneficial Ownership of additional
Common Shares if such acquisition was made in the good faith belief that such
acquisition would not (x) cause the Beneficial Ownership by such Person,
together with its Affiliates and Associates, to be 10% or more of the Common
Shares of the Company outstanding at the time of such acquisition and such good
faith belief was based on the good faith reliance on information contained in
publicly filed reports or documents of the Company that are inaccurate or
out-of-date or (y) otherwise cause a Distribution Date or the adjustment
provided for in Section 11(a) to occur or (B) the acquisition by such Person or
one or more of its Affiliates or Associates of Beneficial Ownership of
additional Common Shares of the Company if the Board of Directors determines
that such acquisition was made in good faith without the knowledge by such
Person or Affiliates or Associates that such Person would thereby become an
Acquiring Person, which determination of the Board of Directors shall be
conclusive and binding on such Person, the Rights Agent, the holders of the
Rights and all other Persons. Notwithstanding the foregoing, if any Person that
is not an Acquiring Person due to (ii)(A) or (ii)(B) of the prior sentence does
not reduce its percentage of Beneficial Ownership of Common Shares of the
Company to less than 10% by the Close of Business on the tenth calendar day
after notice from the Company (the date of notice being the first day) that such
Person's Beneficial Ownership of Common Shares would make it an Acquiring
Person, such Person shall, at the end of such ten calendar day period, become an
Acquiring Person (and such clause (ii)(A) or (ii)(B) shall no longer apply to
such Person). For purposes of this definition, the determination whether any
Person acted in
<PAGE>   7
                                                                               3

"good faith" shall be conclusively determined by the Board of Directors.
Notwithstanding anything in this definition of Acquiring Person to the contrary,
no Person shall become an "Acquiring Person" as the result of an acquisition of
Common Shares by the Company which, by reducing the number of shares
outstanding, increases the proportionate number of shares beneficially owned by
such Person to 10% or more of the Common Shares of the Company then outstanding;
provided, however, that if a Person shall become the Beneficial Owner of 10% or
more of the Common Shares of the Company then outstanding by reason of share
acquisitions by the Company and shall, after such share acquisitions by the
Company, become the Beneficial owner of any additional Common Shares of the
Company (other than pursuant to a dividend or distribution paid or made by the
Company on the outstanding Common Shares or pursuant to a split or subdivision
of the outstanding Common Shares), then such Person shall be deemed to be an
"Acquiring Person" unless upon becoming the Beneficial Owner of such additional
Common Shares such Person does not beneficially own 10% or more of the Common
Shares then outstanding.

                  (b) "Affiliate" shall have the meaning ascribed to such term
in Rule 12b-2 of the General Rules and Regulations under the Exchange Act as in
effect on the date of this Agreement.

                  (c) "Associate" shall have the meaning ascribed to such term
in Rule 12b-2 of the General Rules and Regulations under the Exchange Act as in
effect on the date of this Agreement.

                  (d) (i) A Person shall be deemed the "Beneficial Owner" of and
shall be deemed to "beneficially own" any securities:

                  (A) which such Person or any of such Person's Affiliates or
         Associates beneficially owns, directly or indirectly;

                  (B) which such Person or any of such Person's Affiliates or
         Associates has (1) the right to acquire (whether such right is
         exercisable immediately or only after the passage of time) pursuant to
         any agreement, arrangement or understanding (other than customary
<PAGE>   8
                                                                               4

         agreements with and between underwriters and selling group members with
         respect to a bona fide public offering of securities), or upon the
         exercise of conversion rights, exchange rights, rights (other than
         these Rights), warrants or options, or otherwise; provided, however,
         that a Person shall not be deemed the Beneficial Owner of, or to
         beneficially own, securities tendered pursuant to a tender or exchange
         offer made by or on behalf of such Person or any of such Person's
         Affiliates or Associates until such tendered securities are accepted
         for purchase or exchange; or (2) the right to vote, or the right to
         direct the vote, pursuant to any agreement, arrangement or
         understanding; provided, however, that a Person shall not be deemed the
         Beneficial Owner of, or to beneficially own, any security, if the
         agreement, arrangement or understanding to vote, or direct the vote of,
         such security (x) arises solely from a revocable proxy or consent given
         to such Person in response to a public proxy or consent solicitation
         made pursuant to, and in accordance with, the applicable rules and
         regulations promulgated under the Exchange Act and (y) is not also then
         reportable on Schedule 13D under the Exchange Act (or any comparable or
         successor report); or

                  (C) which are beneficially owned, directly or indirectly, by
         any other Person with which such Person or any of such Person's
         Affiliates or Associates has any agreement, arrangement or
         understanding (other than customary agreements with and between
         underwriters and selling group members with respect to a bona fide
         public offering of securities) for the purpose of acquiring, holding,
         voting (except to the extent contemplated by the proviso to Section
         1(d)(i)(B)(2)) or disposing of such securities of the Company provided,
         however, that no Person who is an officer, director or employee of an
         Exempt Person shall be deemed, solely by reason of such Person's status
         or authority as such, to be the "Beneficial Owner" of, to have
         "Beneficial Ownership" of or to "beneficially own" any securities that
         are "beneficially owned" (as defined in this Section 1(d)), including,
         without limitation, in a fiduciary capacity, by an Exempt
<PAGE>   9
                                                                               5

         Person or by any other such officer, director or employee of an Exempt
         Person.

                  (ii) Notwithstanding anything in this definition of Beneficial
Ownership to the contrary (A) no Person (and no Affiliate or Associate of any
Person) shall at any time prior to the Spinoff Date be deemed to be the
"Beneficial Owner" of or to "beneficially own" any securities if such Person is
the Beneficial Owner of or "beneficially owns" such securities as a result of
one or more agreements, arrangements or understandings with any Lucent Entity
(whether or not the Company or any other Person is a party thereto) and if such
Person would not be the Beneficial Owner of or "beneficially own" such
securities if such agreements, arrangements or understandings were not then in
effect, (B) the phrase "then outstanding", when used with reference to a
Person's Beneficial Ownership of securities of the Company, shall mean the
number of such securities then issued and outstanding together with the number
of such securities not then actually issued and outstanding which such Person
would be deemed to own beneficially hereunder and (c) the Warburg Purchasers,
individually or collectively, shall not at any time be deemed to "Beneficially
Own" or to be the "Beneficial Owners" of any Common Shares (1) acquired or that
may be acquired as a result of the conversion of any Series B Preferred Stock
or the exercise of any Warrants acquired pursuant to the Preferred Stock and
Warrant Purchase Agreement, (2) acquired or that may be acquired, directly or
indirectly, pursuant to the exercise of the preemptive rights granted pursuant
to Section 5.11 of the Preferred Stock and Warrant Purchase Agreement or (3) as
a result of their ownership of the Series B Preferred Stock or Warrants
acquired pursuant to the Preferred Stock and Warrant Purchase Agreement.

                  (e) "Board of Directors" shall have the meaning set forth in
the preamble hereof.

                  (f) "Business Day" shall mean any day other than a Saturday, a
Sunday, or a day on which banking institutions in New York are authorized or
obligated by law or executive order to close.

                  (g) "Book-Entry" shall mean an uncertified book-entry for the
Company's Common Stock.

                  (h) "Close of Business" on any given date shall mean 5:00
P.M., New York time, on such date; provided, however, that, if such date is not
a Business Day, it shall mean 5:00 P.M., New York time, on the next succeeding
Business Day.

                  (i) "Common Shares" when used with reference to the Company
shall mean the shares of common stock, par value $0.01 per share, of the
Company. "Common Shares" when used with reference to any Person other than the
Company shall mean the capital stock (or equity interest) with the greatest
voting power of such other Person or, if such other
<PAGE>   10
                                                                               6

Person is a Subsidiary of another Person, the Person or Persons which ultimately
control such first-mentioned Person.

                  (j) "Company" shall have the meaning set forth in the preamble
hereof.

                  (k) "Current Per Share Market Price" shall have the meaning
set forth in Section 11(d)(i) hereof.

                  (l) "Distribution Date" shall have the meaning set forth in
Section 3 hereof.

                  (m) "equivalent preferred shares" shall have the meaning set
forth in Section 11(b) hereof.

                  (n) "Exchange Act" shall mean the Securities Exchange Act of
1934, as amended.

                  (o) "Exchange Ratio" shall have the meaning set forth in
Section 24(a) hereof.

                  (p) "Final Expiration Date" shall have the meaning set forth
in Section 7(a) hereof.

                  (q) "Lucent" shall mean Lucent Technologies Inc., a Delaware
corporation.

                  (r) "Lucent Entity" shall mean Lucent or any Affiliate or
Associate of Lucent.

                  (s) "Person" shall mean any individual, firm, corporation,
partnership, limited liability company, trust or other entity, and shall include
any successor (by merger or otherwise) of such entity.

                  (t) "Preferred Shares" shall mean shares of Series A Junior
Participating Preferred Stock, par value $1.00 per share, of the Company having
the rights and preferences set forth in the Form of Certificate of Designations
attached to this Agreement as Exhibit A.

                  (u) "Preferred Stock and Warrant Purchase Agreement" shall
mean the Preferred Stock and Warrant Purchase Agreement dated as of August 8,
2000 among the Company and the Warburg Purchasers.

                  (v) "Purchase Price" shall have the meaning set forth in
Section 7(b) hereof.
<PAGE>   11
                                                                               7

                  (w) "Record Date" shall have the meaning set forth in the
preamble hereof.

                  (x) "Redemption Date" shall have the meaning set forth in
Section 7(a) hereof.

                  (y) "Redemption Price" shall have the meaning set forth in
Section 23(a) hereof.

                  (z) "Right" shall have the meaning set forth in the preamble
hereof.

                 (aa) "Right Certificate" shall have the meaning set forth in
Section 3(a) hereof.

                 (bb) "Rights Agent" shall have the meaning set forth in the
preamble hereof.

                 (cc) "Security" shall have the meaning set forth in Section
11(d) hereof.

                 (dd) "Series B Preferred Stock" shall have the meaning set
forth in the Preferred Stock and Warrant Purchase Agreement.

                 (ee) "Shares Acquisition Date" shall mean the first date of
public announcement (which, for purposes of this definition, shall include,
without limitation, a report filed pursuant to Section 13(d) of the Exchange
Act) by the Company or an Acquiring Person that an Acquiring Person has become
such, or such earlier date as a majority of the Board of Directors shall become
aware of the existence of an Acquiring Person.

                 (ff) "Spinoff Date" means the time at which Lucent shall
distribute all the Common Shares of the Company it owns to its stockholders
pursuant to the Contribution and Distribution Agreement by and among the Company
and Lucent, dated as of September 30, 2000, as amended, modified or supplemented
from time to time.

                 (gg) "Subsidiary" of any Person shall mean any corporation or
other entity of which a majority of the voting power of the voting equity
securities or equity interest is owned, directly or indirectly, by such Person.

                 (hh) "Summary of Rights" shall have the meaning set forth in
Section 3(b) hereof.
<PAGE>   12
                                                                               8

                  (ii) "Trading Day" shall have the meaning set forth in Section
11(d) hereof.

                  (jj) "Warburg Purchasers" shall mean the "Purchasers" and
"Permitted Transferees" as each such term is defined in the Preferred Stock and
Warrant Purchase Agreement.

                  (kk) "Warrants" shall have the meaning set forth in the
Preferred Stock and Warrant Purchase Agreements.

                  SECTION 2. Appointment of Rights Agent. The Company hereby
appoints the Rights Agent to act as agent for the Company and the holders of the
Rights (who, in accordance with Section 3 hereof, shall, prior to the
Distribution Date also be the holders of the Common Shares) in accordance with
the terms and conditions hereof, and the Rights Agent hereby accepts such
appointment. The Company may from time to time appoint such co-Rights Agents as
it may deem necessary or desirable.

                  SECTION 3. Issue of Right Certificates. (a) Until the Close of
Business on the earlier of (i) the tenth day after the Shares Acquisition Date
or (ii) such date, if any, as may be designated by the Board of Directors
following the commencement of, or first public disclosure of an intent to
commence, a tender or exchange offer by any Person (other than the Company, any
Subsidiary of the Company, any employee benefit or compensation plan of the
Company or of any Subsidiary of the Company, any Person holding Common Shares
for or pursuant to the terms of any such plan, or prior to the Spinoff Date, any
Lucent Entity) for outstanding Common Shares, if upon consummation of such
tender or exchange offer such Person would be the Beneficial Owner of 10% or
more of the outstanding Common Shares (the earlier of such dates being herein
referred to as the "Distribution Date"), (x) the Rights will be evidenced by the
Book-Entries, or certificates for, Common Stock registered in the name of the
holders of Common Stock (together with, in the case of Book-Entries
representing, or the certificates for, Common Stock outstanding as of the Record
Date, the Summary of Rights) and not by separate Book-Entries or Rights
Certificates and the record holders of the Common Stock represented by such
Book-Entries or certificates shall be the record holders of the Rights
represented thereby, and (y) the Rights will be transferable only in connection
with the transfer of Common Shares. Until the Distribution Date (or, if earlier,
the Expiration Date), transfer on the Company's stock ownership records of any
Common Stock represented by a Book-Entry or the surrender for transfer of any
certificate for Common Stock shall constitute the surrender for transfer of the
Right or Rights associated with the Company Stock evidenced thereby,
<PAGE>   13
                                                                               9

whether or not accompanied by a copy of the Summary of Rights.

                  (b) On the Record Date, or as soon as practicable thereafter,
the Company will send a copy of a Summary of Rights to Purchase Preferred
Shares, in substantially the form of Exhibit C hereto (the "Summary of Rights"),
by first-class, postage-prepaid mail, to each record holder of Common Shares as
of the Close of Business on the Record Date, at the address of such holder shown
on the records of the Company.
<PAGE>   14
                                                                              10

                  (c) Rights shall be issued in respect of all Common Shares
issued or disposed of (including, without limitation, upon disposition of Common
Shares out of treasury stock or issuance or reissuance of Common Shares out of
authorized but unissued shares) after the Record Date but prior to the earlier
of the Distribution Date and the Expiration Date, or in certain circumstances
provided in Section 22 hereof, after the Distribution Date. Certificates for
Common Shares and confirmations evidencing Book-Entries which become outstanding
(including, without limitation, reacquired Common Shares referred to in the last
sentence of this paragraph (c)) after the Record Date but prior to the earliest
of the Distribution Date, the Redemption Date or the Final Expiration Date,
shall have impressed on, printed on, written on or otherwise affixed to them the
following legend:

         This certificate also evidences and entitles the holder hereof to
         certain rights as set forth in a Rights Agreement between Avaya Inc.
         and The Bank of New York, dated as of September 29, 2000, as amended
         from time to time (the "Rights Agreement"), the terms of which are
         hereby incorporated herein by reference and a copy of which is on file
         at the principal executive offices of Avaya Inc. Under certain
         circumstances, as set forth in the Rights Agreement, such Rights will
         be evidenced by separate certificates and will no longer be evidenced
         by this certificate. Avaya Inc. will mail to the holder of this
         certificate a copy of the Rights Agreement without charge after receipt
         of a written request therefor. Under certain circumstances, as set
         forth in the Rights Agreement, Rights owned by or transferred to any
         Person who is or becomes an Acquiring Person (as defined in the Rights
         Agreement) and certain transferees thereof will become null and void
         and will no longer be transferable.

With respect to such certificates containing the foregoing legend, until the
Distribution Date, the Rights associated with the Common Shares represented by
such certificates shall be evidenced by such certificates alone, and the
surrender for transfer of any such certificate, except as
<PAGE>   15
                                                                              11

otherwise provided herein, shall also constitute the transfer of the Rights
associated with the Common Shares represented thereby. In the event that the
Company purchases or otherwise acquires any Common Shares after the Record Date
but prior to the Distribution Date, any Rights associated with such Common
Shares shall be deemed canceled and retired so that the Company shall not be
entitled to exercise any Rights associated with the Common Shares which are no
longer outstanding.

Notwithstanding this paragraph (c), the omission of a legend shall not affect
the enforceability of any part of this Agreement or the rights of any holder of
the Rights (other than any Acquiring Person or any Associate or Affiliate of an
Acquiring Person).

                  (d) As soon as practicable after the Distribution Date, the
Company will prepare and execute, the Rights Agent will countersign, and the
Company will send or cause to be sent (and the Rights Agent will, if requested,
send) by first-class, postage-prepaid mail, to each record holder of Common
Shares as of the Close of Business on the Distribution Date (other than any
Acquiring Person or any Associate or Affiliate of an Acquiring Person), at the
address of such holder shown on the records of the Company, a Right Certificate,
in substantially the form of Exhibit B hereto (a "Right Certificate"),
evidencing one Right (subject to adjustment as provided herein) for each Common
Share so held. From and after the Distribution Date, the Rights will be
evidenced solely by such Right Certificates.

                  SECTION 4. Form of Right Certificates. The Right Certificates
(and the forms of election to purchase shares and of assignment to be printed on
the reverse thereof) shall be substantially the same as Exhibit B hereto and may
have such marks of identification or designation and such legends, summaries or
endorsements printed thereon as the Company may deem appropriate and as are not
inconsistent with the provisions of this Agreement, or as may be required to
comply with any applicable law or with any rule or regulation made pursuant
thereto or with any rule or regulation of any stock exchange or automated
quotation system on which the Rights may from time to time be listed, or to
conform to usage. Subject to the provisions of this Agreement, the Right
Certificates shall entitle the holders
<PAGE>   16
                                                                              12

thereof to purchase such number of one one-thousandths of a Preferred Share as
shall be set forth therein at the Purchase Price, but the number of such one
one-thousandths of a Preferred Share and the Purchase Price shall be subject to
adjustment as provided herein.

                  SECTION 5. Countersignature and Registration. The Right
Certificates shall be executed on behalf of the Company by its Chairman of the
Board, its Chief Executive Officer, its President, any of its Vice Presidents,
or its Treasurer, either manually or by facsimile signature, shall have affixed
thereto the Company's seal or a facsimile thereof, and shall be attested by the
Secretary or an Assistant Secretary of the Company, either manually or by
facsimile signature. The Right Certificates shall be manually countersigned by
the Rights Agent and shall not be valid for any purpose unless countersigned. In
case any officer of the Company who shall have signed any of the Right
Certificates shall cease to be such officer of the Company before
countersignature by the Rights Agent and issuance and delivery by the Company,
such Right Certificates, nevertheless, may be countersigned by the Rights Agent
and issued and delivered by the Company with the same force and effect as though
the individual who signed such Right Certificates had not ceased to be such
officer of the Company; and any Right Certificate may be signed on behalf of the
Company by any individual who, at the actual date of the execution of such Right
Certificate, shall be a proper officer of the Company to sign such Right
Certificate although at the date of the execution of this Agreement any such
individual was not such an officer.

                  Following the Distribution Date, the Rights Agent will keep or
cause to be kept, at its principal office, books for registration and transfer
of the Right Certificates issued hereunder. Such books shall show the names and
addresses of the respective holders of the Right Certificates, the number of
Rights evidenced on its face by each of the Right Certificates and the date of
each of the Right Certificates.

                  SECTION 6. Transfer, Split Up, Combination and Exchange of
Right Certificates; Mutilated, Destroyed, Lost or Stolen Right Certificates.
Subject to the provisions of this Agreement, at any time after the Distribution
Date, and
<PAGE>   17
                                                                              13

at or prior to the Close of Business on the Expiration Date, any Right
Certificate or Right Certificates (other than Right Certificates representing
Rights that have become void pursuant to Section 11(a)(ii) hereof may be
transferred, split up, combined, or exchanged for another Right Certificate or
other Right Certificates entitling the registered holder to purchase a like
number of one one-thousandths of a Preferred Share as the Right Certificate or
Right Certificates surrendered then entitled such holder to purchase. Any
registered holder desiring to transfer, split up, combine or exchange any Right
Certificate or Right Certificates shall make such request in writing delivered
to the Rights Agent, and shall surrender the Right Certificate or Right
Certificates to be transferred, split up, combined or exchanged at the principal
office of the Rights Agent. Thereupon the Rights Agent shall countersign and
deliver to the Person entitled thereto a Right Certificate or Right
Certificates, as the case may be, as so requested. The Company may require
payment of a sum sufficient to cover any tax or governmental charge that may be
imposed in connection with any transfer, split up, combination or exchange of
Right Certificates.

                  Subject to the provisions of this Agreement, at any time after
the Distribution Date and prior to the Expiration Date, upon receipt by the
Company and the Rights Agent of evidence reasonably satisfactory to them of the
loss, theft, destruction or mutilation of a Right Certificate, and, in case of
loss, theft or destruction, of indemnity or security reasonably satisfactory to
them, and, at the Company's request, reimbursement to the Company and the Rights
Agent of all reasonable expenses incidental thereto, and upon surrender to the
Rights Agent and cancellation of the Right Certificate if mutilated, the Company
will make and deliver a new Right Certificate of like tenor to the Rights Agent
for delivery to the registered holder in lieu of the Right Certificate so lost,
stolen, destroyed or mutilated.

                  SECTION 7. Exercise of Rights; Purchase Price; Expiration Date
of Rights. (a) Except as otherwise provided herein, the Rights shall become
exercisable on the Distribution Date, and thereafter the registered holder of
any Right Certificate may exercise the Rights evidenced thereby (except as
otherwise provided herein), in whole or
<PAGE>   18
                                                                              14

in part, at any time after the Distribution Date, upon surrender of the Right
Certificate, with the form of election to purchase on the reverse side thereof
duly executed, to the Rights Agent at the principal office of the Rights Agent,
together with payment of the Purchase Price for each one one-thousandth of a
Preferred Share (or other securities, cash or other assets, as the case may be)
as to which the Rights are exercised, at any time which is both after the
Distribution Date and prior to the time (the "Expiration Date") that is the
earliest of (i) the Close of Business on September 29, 2010 (the "Final
Expiration Date"), (ii) the time at which the Rights are redeemed as provided in
Section 23 hereof (the "Redemption Date"), or (iii) the time at which such
Rights are exchanged as provided in Section 24 hereof.

                  (b) The Purchase Price for each one one-thousandth of a
Preferred Share purchasable pursuant to the exercise of a Right shall initially
be $[-], and the Purchase Price and the number of one one-thousandth of a share
of Preferred Share or other securities or property to be acquired upon exercise
of a Right shall be subject to adjustment from time to time as provided in
Section 11 or 13 hereof and shall be payable in lawful money of the United
States of America in accordance with paragraph (c) below.

                  (c) Except as otherwise provided herein, upon receipt of a
Right Certificate representing exercisable Rights, with the form of election to
purchase duly executed, accompanied by payment of the Purchase Price for the
shares to be purchased and an amount equal to any applicable transfer tax
required to be paid by the holder of such Right Certificate in accordance with
Section 9 hereof by certified check, cashier's check or money order payable to
the order of the Company, the Rights Agent shall thereupon promptly (i)(A)
requisition from any transfer agent of the Preferred Shares, or make available
if the Rights Agent is the transfer agent for the Preferred Shares, certificates
for the number of Preferred Shares to be purchased and the Company hereby
irrevocably authorizes any such transfer agent to comply with all such requests,
or (B) requisition from the depositary agent appointed by the Company depositary
receipts representing interests in such number of one one-thousandths of a
Preferred Share as are to be purchased (in which case certificates for the
Preferred
<PAGE>   19
                                                                              15

Shares represented by such receipts shall be deposited by the transfer
agent of the Preferred Shares with such depositary agent) and the Company hereby
directs such depositary agent to comply with such request; (ii) when
appropriate, requisition from the Company the amount of cash to be paid in lieu
of issuance of fractional shares in accordance with Section 14 hereof; (iii)
promptly after receipt of such certificates or depositary receipts, cause the
same to be delivered to or upon the order of the registered holder of such Right
Certificate, registered in such name or names as may be designated by such
holder; and (iv) when appropriate, after receipt, promptly deliver such cash to
or upon the order of the registered holder of such Right Certificate.

                  (d) Except as otherwise provided herein, in case the
registered holder of any Right Certificate shall exercise less than all the
Rights evidenced thereby, a new Right Certificate evidencing Rights equivalent
to the exercisable Rights remaining unexercised shall be issued by the Rights
Agent to the registered holder of such Right Certificate or to his duly
authorized assigns, subject to the provisions of Section 14 hereof.

                  (e) Notwithstanding anything in this Agreement to the
contrary, neither the Rights Agent nor the Company shall be obligated to
undertake any action with respect to a registered holder of Rights upon the
occurrence of any purported transfer or exercise of Rights pursuant to Section 6
hereof or this Section 7 unless such registered holder shall have (i) completed
and signed the certificate contained in the form of assignment or form of
election to purchase set forth on the reverse side of the Rights Certificate
surrendered for such transfer or exercise and (ii) provided such additional
evidence of the identity of the Beneficial Owner (or former Beneficial Owner)
thereof as the Company shall reasonably request.

                  SECTION 8. Cancellation and Destruction of Right Certificates.
All Right Certificates surrendered for the purpose of exercise, transfer, split
up, combination or exchange shall, if surrendered to the Company or to any of
its agents, be delivered to the Rights Agent for cancellation or in canceled
form, or, if surrendered to the Rights Agent,
<PAGE>   20
                                                                              16

shall be canceled by it, and no Right Certificates shall be issued in lieu
thereof except as expressly permitted by any of the provisions of this
Agreement. The Company shall deliver to the Rights Agent for cancellation and
retirement, and the Rights Agent shall so cancel and retire, any other Right
Certificate purchased or acquired by the Company otherwise than upon the
exercise thereof. The Rights Agent shall deliver all canceled Right Certificates
to the Company, or shall, at the written request of the Company, destroy such
canceled Right Certificates, and, in such case, shall deliver a certificate of
destruction thereof to the Company.

                  SECTION 9. Availability of Preferred Shares. (a) The Company
covenants and agrees that it will cause to be reserved and kept available out of
its authorized and unissued Preferred Shares or any Preferred Shares held in its
treasury, the number of Preferred Shares that will be sufficient to permit the
exercise in full of all outstanding Rights in accordance with Section 7.

                  (b) So long as the of Preferred Shares issuable upon the
exercise of Rights may be listed or admitted to trading on any national
securities exchange, or quoted on NASDAQ, the Company shall use its best efforts
to cause, from and after such time as the Rights become exercisable, all shares
reserved for such issuance to be listed or admitted to trading on such exchange,
or quoted on NASDAQ, upon official notice of issuance upon such exercise.

                  (c) From and after such time as the Rights become exercisable,
the Company shall use its best efforts, if then necessary to permit the issuance
of Preferred Shares upon the exercise of Rights, to register and qualify such
Preferred Shares under the Securities Act and any applicable state securities or
"Blue Sky" laws (to the extent exemptions therefrom are not available), cause
such registration statement and qualifications to become effective as soon as
possible after such filing and keep such registration and qualifications
effective (with a prospectus at all times meeting the requirements of the
Securities Act) until the earlier of the date as of which the Rights are no
longer exercisable for such securities and the Expiration Date. The Company may
temporarily suspend, for a period of time not to exceed 90 days, the
<PAGE>   21
                                                                              17

exercisability of the Rights in order to prepare and file a registration
statement under the Securities Act and permit it to become effective. Upon any
such suspension, the Company shall issue a public announcement stating that the
exercisability of the Rights has been temporarily suspended, as well as a public
announcement at such time as the suspension is no longer in effect.
Notwithstanding any provision of this Agreement to the contrary, the Rights
shall not be exercisable in any jurisdiction unless the requisite qualification
in such jurisdiction shall have been obtained and until a registration statement
under the Securities Act shall have been declared effective, unless an exemption
therefrom is available.

                  (d) The Company covenants and agrees that it will take all
such action as may be necessary to ensure that all Preferred Shares delivered
upon exercise of Rights shall, at the time of delivery of the certificates for
such Preferred Shares (subject to payment of the Purchase Price), be duly and
validly authorized and issued and fully paid and nonassessable shares.

                  The Company further covenants and agrees that it will pay when
due and payable any and all federal and state transfer taxes and charges which
may be payable in respect of the issuance or delivery of the Right Certificates
or of any Preferred Shares upon the exercise of Rights. The Company shall not,
however, be required to pay any transfer tax which may be payable in respect of
any transfer or delivery of Right Certificates to a Person other than, or the
issuance or delivery of certificates or depositary receipts for the Preferred
Shares in a name other than that of, the registered holder of the Right
Certificate evidencing Rights surrendered for exercise or to issue or to deliver
any certificates or depositary receipts for Preferred Shares upon the exercise
of any Rights until any such tax shall have been paid (any such tax being
payable by the holder of such Right Certificate at the time of surrender) or
until it has been established to the Company's reasonable satisfaction that no
such tax is due.

                  SECTION 10. Preferred Shares Record Date. Each Person in whose
name any certificate for Preferred Shares is issued upon the exercise of Rights
shall for all purposes be deemed to have become the holder of record of the
Preferred
<PAGE>   22
                                                                              18

Shares represented thereby on, and such certificate shall be dated, the date
upon which the Right Certificate evidencing such Rights was duly surrendered and
payment of the Purchase Price (and any applicable transfer taxes) was made;
provided, however, that if the date of such surrender and payment is a date upon
which the Preferred Shares transfer books of the Company are closed, such Person
shall be deemed to have become the record holder of such shares on, and such
certificate shall be dated, the next succeeding Business Day on which the
Preferred Shares transfer books of the Company are open. Prior to the exercise
of the Rights evidenced thereby, the holder of a Right Certificate shall not be
entitled to any rights of a holder of Preferred Shares for which the Rights
shall be exercisable, including, without limitation, the right to vote, to
receive dividends or other distributions or to exercise any preemptive rights,
and shall not be entitled to receive any notice of any proceedings of the
Company, except as provided herein.

                  SECTION 11. Adjustment of Purchase Price, Number and Kind of
Shares or Number of Rights. The Purchase Price, the number of Preferred Shares
or other securities or property purchasable upon exercise of each Right and the
number of Rights outstanding are subject to adjustment from time to time as
provided in this Section 11.

                  (a) (i) In the event the Company shall at any time after the
date of this Agreement (A) declare and pay a dividend on the Preferred Shares
payable in Preferred Shares, (B) subdivide the outstanding Preferred Shares, (C)
combine the outstanding Preferred Shares into a smaller number of Preferred
Shares or (D) issue any shares of its capital stock in a reclassification of the
Preferred Shares (including any such reclassification in connection with a
consolidation or merger in which the Company is the continuing or surviving
corporation), except as otherwise provided in this Section 11(a), the number and
kind of shares of capital stock issuable upon exercise of a Right at the time of
the record date for such dividend or of the effective date of such subdivision,
combination or reclassification, shall be proportionately adjusted so that the
holder of any Right exercised after such time shall be entitled to receive the
aggregate number and kind of shares of capital stock which, if such Right had
been exercised immediately prior to such date and at a time when the
<PAGE>   23
                                                                              19

Preferred Shares transfer books of the Company were open, he would have owned
upon such exercise and been entitled to receive by virtue of such dividend,
subdivision, combination or reclassification; provided, however, that in no
event shall the consideration to be paid upon the exercise of one Right be less
than the aggregate par value of the shares of capital stock of the Company
issuable upon exercise of one Right.

                  (ii) Subject to Section 24 of this Agreement, in the event any
         Person becomes an Acquiring Person, each holder of a Right, except as
         otherwise provided in this Agreement, shall thereafter have a right to
         receive, upon exercise thereof at a price equal to the then current
         Purchase Price multiplied by the number of one one-thousandths of a
         Preferred Share for which a Right is then exercisable, in accordance
         with the terms of this Agreement and in lieu of Preferred Shares, such
         number of Common Shares of the Company as shall equal the result
         obtained by (A) multiplying the then current Purchase Price by the
         number of one one-thousandths of a Preferred Share for which a Right is
         then exercisable and dividing that product by (B) 50% of the then
         Current Per Share Market Price of the Company's Common Shares
         (determined pursuant to Section 11(d)(i) hereof) on the date of the
         occurrence of such event provided, however, that the Purchase Price and
         the number of Common Shares so receivable upon exercise of a Right
         shall, following the time a Person becomes an Acquiring Person, be
         subject to further adjustment as appropriate in accordance with Section
         11(f) hereof. The Company agrees that, after the earlier of the
         Distribution Date or the Shares Acquisition Date, it will not, except
         as permitted by Sections 23, 24 or 27 hereof, take (or permit any
         Subsidiary to take) any action if at the time such action is taken it
         is reasonably foreseeable that such action will diminish substantially
         or eliminate the benefits intended to be afforded by the Rights.

                  Notwithstanding anything in this Agreement to the contrary,
from and after the occurrence of such event, any Rights that are or were
acquired or beneficially owned by (x) any Acquiring Person (or any Associate or
Affiliate of such Acquiring Person), a transferee of any Acquiring Person
<PAGE>   24
                                                                              20

(or any such Affiliate or Associate) who becomes a transferee after a Person
becomes an Acquiring Person or (z) a transferee of any Acquiring Person (or any
such Affiliate or Associate) who became a transferee prior to or concurrently
with a Person becoming an Acquiring Person pursuant to either (I) a transfer
from the Acquiring Person to holders of its equity securities or to any Person
with whom it has any continuing agreement, arrangement or understanding
regarding the transferred Rights or (II) a transfer which the Board of Directors
has determined is part of a plan, arrangement or understanding which has the
purpose or effect of avoiding the provisions of this paragraph, and subsequent
transferees of such Persons, shall be void and any holder of such Rights shall
thereafter have no right to exercise such Rights under any provision of this
Agreement. The Company shall use all reasonable efforts to ensure that the
provisions of this Section 11(a)(ii) are complied with, but shall have no
liability to any holder of Right Certificates or other Person as a result of its
failure to make any determinations with respect to an Acquiring Person or its
Affiliates, Associates or transferees hereunder. From and after the time a
Person becomes an Acquiring Person, no Right Certificate shall be issued
pursuant to Section 3 or Section 6 hereof that represents Rights that are or
have become void pursuant to the provisions of this paragraph, and any Right
Certificate delivered to the Rights Agent that represents Rights that are or
have become void pursuant to the provisions of this paragraph shall be canceled.
From and after the occurrence of an event specified in Section 13(a) hereof, any
Rights that theretofore have not been exercised pursuant to this Section
11(a)(ii) shall thereafter be exercisable only in accordance with Section 13 and
not pursuant to this Section 11(a)(ii).

                  (iii) The Company may at its option substitute for a Common
         Share issuable upon the exercise of Rights in accordance with the
         foregoing subparagraph (ii) a number of Preferred Shares or fraction
         thereof such that the current per share market price of one Preferred
         Share multiplied by such number or fraction is equal to the Current Per
         Share Market Price of one Common Share. In the event that there shall
         not be sufficient Common Shares issued but not outstanding or
<PAGE>   25
                                                                              21

         authorized but unissued to permit the exercise in full of the Rights in
         accordance with the foregoing subparagraph (ii), the Board of Directors
         shall, with respect to such deficiency, to the extent permitted by
         applicable law and any material agreements then in effect to which the
         Company is a party, (A) determine the excess (such excess, the
         "Spread") of (1) the value of Common Shares issuable upon the exercise
         of a Right in accordance with the foregoing subparagraph (ii) (the
         "Current Value") over (2) the Purchase Price (as adjusted in accordance
         with the foregoing subparagraph (ii)), and (B) with respect to each
         Right (other than Rights which have become void pursuant to the
         foregoing subparagraph (ii)), make adequate provision to substitute for
         the Common Shares issuable in accordance with the foregoing
         subparagraph (ii) upon exercise of the Right and payment of the
         Purchase Price (as adjusted in accordance therewith), (1) cash, (2) a
         reduction in such Purchase Price, (3) Preferred Shares or other equity
         securities of the Company (including, without limitation, shares or
         fractions of shares of preferred stock which, by virtue of having
         dividend, voting and liquidation rights substantially comparable to
         those of the Common Shares, are deemed in good faith by the Board of
         Directors to have substantially the same value as the Common Shares
         (such Preferred Shares and shares or fractions of shares of preferred
         stock are hereinafter referred to as "Common Stock Equivalents")), (4)
         debt securities of the Company, (5) other assets, or (6) any
         combination of the foregoing, having a value which, when added to the
         value of the Common Shares issued upon exercise of such Right, shall
         have an aggregate value equal to the Current Value (less the amount of
         any reduction in such Purchase Price), where such aggregate value has
         been determined by the Board of Directors upon the advice of a
         nationally recognized investment banking firm selected in good faith by
         the Board of Directors; provided, however, that if the Company shall
         not make adequate provision to deliver value pursuant to clause (B)
         above within thirty (30) days following the time a Person becomes an
         Acquiring Person (the time a Person becomes an Acquiring Person being
         the "Section 11(a)(ii) Trigger Date"), then the Company shall be
         obligated to deliver, to the extent permitted by applicable law and
<PAGE>   26
                                                                              22

         any material agreements then in effect to which the Company is a party,
         upon the surrender for exercise of a Right and without requiring
         payment of such Purchase Price of Common Shares (to the extent
         available), and then, if necessary, such number or fractions of
         Preferred Shares (to the extent available) and then, if necessary,
         cash, which shares and/or cash have an aggregate value equal to the
         Spread. If, upon the occurrence of a Person becoming an Acquiring
         Person, the Board of Directors shall determine in good faith that it is
         likely that sufficient additional Common Shares could be authorized for
         issuance upon exercise in full of the Rights, then, if the Board of
         Directors so elects, the thirty (30) day period set forth above may be
         extended to the extent necessary, but not more than ninety (90) days
         after the Section 11(a)(ii) Trigger Date, in order that the Company may
         seek stockholder approval for the authorization of such additional
         shares (such thirty (30) day period, as it may be extended, is herein
         called the "Substitution Period"). To the extent that the Company
         determines that some action need be taken pursuant to the second and/or
         third sentence of this Section 11(a)(iii), the Company (x) shall
         provide, subject to Section 11(a)(ii) hereof and the last sentence of
         this Section 11(a)(iii) hereof, that such action shall apply uniformly
         to all outstanding Rights and (y) may suspend the exercisability of the
         Rights until the expiration of the Substitution Period in order to seek
         any authorization of additional shares and/or to decide the appropriate
         form of distribution to be made pursuant to such second sentence and to
         determine the value thereof. In the event of any such suspension, the
         Company shall issue a public announcement stating that the
         exercisability of the Rights has been temporarily suspended, as well as
         a public announcement at such time as the suspension is no longer in
         effect. For purposes of this Section 11(a)(iii), the value of Common
         Shares shall be the Current Per Share Market Price (as determined
         pursuant to Section 11(d)(i)) on the Section 11(a)(ii) Trigger Date and
         the per share or fractional value of any "Common Stock Equivalent"
         shall be deemed to equal the current per share market price of the
         Common Shares. The Board of Directors of the Company may, but shall not
         be required to, establish
<PAGE>   27
                                                                              23

         procedures to allocate the right to receive Common Shares upon the
         exercise of the Rights among holders of Rights pursuant to this Section
         11(a)(iii).

                  (b) In case the Company shall fix a record date for the
issuance of rights, options or warrants to all holders of Preferred Shares
entitling them (for a period expiring within 45 calendar days after such record
date) to subscribe for or purchase Preferred Shares (or shares having the same
rights, privileges and preferences as the Preferred Shares ("equivalent
preferred shares")) or securities convertible into Preferred Shares or
equivalent preferred shares at a price per Preferred Share or equivalent
preferred share (or having a conversion price per share, if a security
convertible into Preferred Shares or equivalent preferred shares) less than the
then Current Per Share Market Price of the Preferred Shares) on such record
date, the Purchase Price to be in effect after such record date shall be
determined by multiplying the Purchase Price in effect immediately prior to such
record date by a fraction, the numerator of which shall be the number of
Preferred Shares and equivalent preferred shares outstanding on such record date
plus the number of Preferred Shares and equivalent preferred shares which the
aggregate offering price of the total number of Preferred Shares and/or
equivalent preferred shares so to be offered (and/or the aggregate initial
conversion price of the convertible securities so to be offered) would purchase
at such current market price and the denominator of which shall be the number of
Preferred Shares and equivalent preferred shares outstanding on such record date
plus the number of additional Preferred Shares and/or equivalent preferred
shares to be offered for subscription or purchase (or into which the convertible
securities so to be offered are initially convertible); provided, however, that
in no event shall the consideration to be paid upon the exercise of one Right be
less than the aggregate par value of the shares of capital stock of the Company
issuable upon exercise of one Right. In case such subscription price may be paid
in a consideration part or all of which shall be in a form other than cash, the
value of such consideration shall be as determined in good faith by the Board of
Directors, whose determination shall be described in a statement filed with the
Rights Agent and shall be binding on the Rights Agent
<PAGE>   28
                                                                              24

and holders of the Rights. Preferred Shares and equivalent preferred shares
owned by or held for the account of the Company shall not be deemed outstanding
for the purpose of any such computation. Such adjustment shall be made
successively whenever such a record date is fixed; and in the event that such
rights, options or warrants are not so issued, the Purchase Price shall be
adjusted to be the Purchase Price which would then be in effect if such record
date had not been fixed.

                  (c) In case the Company shall fix a record date for the making
of a distribution to all holders of the Preferred Shares (including any such
distribution made in connection with a consolidation or merger in which the
Company is the continuing or surviving corporation) of evidences of indebtedness
or assets (other than a regular quarterly cash dividend or a dividend payable in
Preferred Shares) or subscription rights or warrants (excluding those referred
to in Section 11(b) hereof), the Purchase Price to be in effect after such
record date shall be determined by multiplying the Purchase Price in effect
immediately prior to such record date by a fraction, the numerator of which
shall be the then Current Per Share Market Price of the Preferred Shares on such
record date, less the fair market value (as determined in good faith by the
Board of Directors, whose determination shall be described in a statement filed
with the Rights Agent and shall be binding on the Rights Agent and holders of
the Rights) of the portion of the assets or evidences of indebtedness so to be
distributed or of such subscription rights or warrants applicable to one
Preferred Share and the denominator of which shall be such Current Per Share
Market Price of the Preferred Shares; provided, however, that in no event shall
the consideration to be paid upon the exercise of one Right be less than the
aggregate par value of the shares of capital stock of the Company to be issued
upon exercise of one Right. Such adjustments shall be made successively whenever
such a record date is fixed; and in the event that such distribution is not so
made, the Purchase Price shall again be adjusted to be the Purchase Price which
would then be in effect if such record date had not been fixed.

                  (d) (i) For the purpose of any computation hereunder, the
"Current Per Share Market Price" of any security (a "Security" for the purpose
of this
<PAGE>   29
                                                                              25

Section 11(d)(i)) on any date shall be deemed to be the average of the daily
closing prices per share of such Security for the 30 consecutive Trading Days
immediately prior to such date; provided, however, that in the event that the
Current Per Share Market Price of the Security is determined during a period
following the announcement by the issuer of such Security of (A) a dividend or
distribution on such Security payable in shares of such Security or securities
convertible into such shares, or (B) any subdivision, combination or
reclassification of such Security and prior to the expiration of 30 Trading Days
after the ex-dividend date for such dividend or distribution, or the record date
for such subdivision, combination or reclassification, then, and in each such
case, the Current Per Share Market Price shall be appropriately adjusted to
reflect the current market price per share equivalent of such Security. The
closing price for each day shall be the last sale price, regular way, or, in
case no such sale takes place on such day, the average of the closing bid and
asked prices, regular way, in either case, as reported in the principal
consolidated transaction reporting system with respect to securities listed or
admitted to trading on the New York Stock Exchange or, if the Security is not
listed or admitted to trading on the New York Stock Exchange, as reported in the
principal consolidated transaction reporting system with respect to securities
listed on the principal national securities exchange on which the Security is
listed or admitted to trading or, if the Security is not listed or admitted to
trading on any national securities exchange, the last quoted price or, if not so
quoted, the average of the high bid and low asked prices in the over-the counter
market, as reported on the Nasdaq National Market or such other system then in
use, or, if on any such date the Security is not quoted by any such
organization, the average of the closing bid and asked prices as furnished by a
professional market maker making a market in the Security selected by the Board
of Directors. The term "Trading Day" shall mean a day on which the principal
national securities exchange on which the Security is listed or admitted to
trading is open for the transaction of business or, if the Security is not
listed or admitted to trading on any national securities exchange, a Business
Day.
<PAGE>   30
                                                                              26

                  (ii) For the purpose of any computation hereunder, the
         "Current Per Share Market Price" of the Preferred Shares shall be
         determined in accordance with the method set forth in Section 11(d)(i).
         If the Preferred Shares are not publicly traded, the "Current Per Share
         Market Price" of the Preferred Shares shall be conclusively deemed to
         be the Current Per Share Market Price of the Common Shares as
         determined pursuant to Section 11(d)(i) (appropriately adjusted to
         reflect any stock split, stock dividend or similar transaction
         occurring after the date hereof), multiplied by one thousand. If
         neither the Common Shares nor the Preferred Shares are publicly held or
         so listed or traded, "Current Per Share Market Price" shall mean the
         fair value per share as determined in good faith by the Board of
         Directors, whose determination shall be described in a statement filed
         with the Rights Agent and shall be binding on the Rights Agent and the
         holders of the Rights.

                  (e) No adjustment in the Purchase Price shall be required
unless such adjustment would require an increase or decrease of at least 1% in
the Purchase Price; provided, however, that any adjustments which by reason of
this Section 11(e) are not required to be made shall be carried forward and
taken into account in any subsequent adjustment. All calculations under this
Section 11 shall be made to the nearest cent or to the nearest one one-millionth
of a Preferred Share or one ten-thousandth of any other share or security as the
case may be. Notwithstanding the first sentence of this Section 11(e), any
adjustment required by this Section 11 shall be made no later than the earlier
of (i) three years from the date of the transaction which requires such
adjustment or (ii) the Expiration Date.

                  (f) If as a result of an adjustment made pursuant to Section
11(a) hereof, the holder of any Right thereafter exercised shall become entitled
to receive any shares of capital stock of the Company other than Preferred
Shares, thereafter the Purchase Price and the number of such other shares so
receivable upon exercise of any Right shall be subject to adjustment from time
to time in a manner and on terms as nearly equivalent as practicable to the
provisions with respect to the Preferred Shares contained in Section 11(a)
through (c), inclusive, 11(h), 11(i) and 11(m)
<PAGE>   31
                                                                              27

and the provisions of Sections 7, 9, 10, 13 and 14 with respect to the Preferred
Shares shall apply on like terms to any such other shares.

                  (g) All Rights originally issued by the Company subsequent to
any adjustment made to the Purchase Price hereunder shall evidence the right to
purchase, at the adjusted Purchase Price, the number of one one-thousandths of a
Preferred Share purchasable from time to time hereunder upon exercise of the
Rights, all subject to further adjustment as provided herein.

                  (h) Unless the Company shall have exercised its election as
provided in Section 11(i), upon each adjustment of the Purchase Price as a
result of the calculations made in Sections 11(b) and (c), each Right
outstanding immediately prior to the making of such adjustment shall thereafter
evidence the right to purchase, at the adjusted Purchase Price, that number of
one one-thousandths of a Preferred Share (calculated to the nearest one
one-millionth of a Preferred Share) obtained by (A) multiplying (x) the number
of one one-thousandths of a share covered by a Right immediately prior to this
adjustment by (y) the Purchase Price in effect immediately prior to such
adjustment of the Purchase Price and (B) dividing the product so obtained by the
Purchase Price in effect immediately after such adjustment of the Purchase
Price.

                  (i) The Company may elect on or after the date of any
adjustment of the Purchase Price pursuant to Sections 11(b) or 11(c) hereof to
adjust the number of Rights in substitution for any adjustment in the number of
one one-thousandths of a Preferred Share purchasable upon the exercise of a
Right. Each of the Rights outstanding after such adjustment of the number of
Rights shall be exercisable for the number of one one-thousandths of a Preferred
Share for which a Right was exercisable immediately prior to such adjustment.
Each Right held of record prior to such adjustment of the number of Rights shall
become that number of Rights (calculated to the nearest one ten-thousandth)
obtained by dividing the Purchase Price in effect immediately prior to
adjustment of the Purchase Price by the Purchase Price in effect immediately
after adjustment of the Purchase Price. The Company shall make a public
announcement of its election to adjust the number of Rights,
<PAGE>   32
                                                                              28

indicating the record date for the adjustment, and, if known at the time, the
amount of the adjustment to be made. This record date may be the date on which
the Purchase Price is adjusted or any day thereafter, but, if the Right
Certificates have been issued, shall be at least 10 days later than the date of
the public announcement. If Right Certificates have been issued, upon each
adjustment of the number of Rights pursuant to this Section 11(i), the Company
shall, as promptly as practicable, cause to be distributed to holders of record
of Right Certificates on such record date Right Certificates evidencing, subject
to Section 14 hereof, the additional Rights to which such holders shall be
entitled as a result of such adjustment, or, at the option of the Company, shall
cause to be distributed to such holders of record in substitution and
replacement for the Right Certificates held by such holders prior to the date of
adjustment, and upon surrender thereof, if required by the Company, new Right
Certificates evidencing all the Rights to which such holders shall be entitled
after such adjustment. Right Certificates so to be distributed shall be issued,
executed and countersigned in the manner provided for herein and shall be
registered in the names of the holders of record of Right Certificates on the
record date specified in the public announcement.

                  (j) Irrespective of any adjustment or change in the Purchase
Price or the number of one one-thousandths of a Preferred Share issuable upon
the exercise of the Rights, the Right Certificates theretofore and thereafter
issued may continue to express the Purchase Price and the number of one
one-thousandths of a Preferred Share which were expressed in the initial Right
Certificates issued hereunder.

                  (k) Before taking any action that would cause an adjustment
reducing the Purchase Price below the then par value, if any, of the fractional
Preferred Share or other shares of capital stock issuable upon exercise of the
Rights, the Company shall take any corporate action which may, in the opinion of
its counsel, be necessary in order that the Company may validly and legally
issue fully paid and nonassessable Preferred Shares or such other shares at such
adjusted Purchase Price.

                  (l) In any case in which this Section 11 shall require that an
adjustment in the Purchase Price be made
<PAGE>   33
                                                                              29

effective as of a record date for a specified event, the Company may elect to
defer until the occurrence of such event the issuing to the holder of any Right
exercised after such record date of the Preferred Shares and other capital stock
or securities of the Company, if any, issuable upon such exercise over and above
the Preferred Shares and other capital stock or securities of the Company, if
any, issuable upon such exercise on the basis of the Purchase Price in effect
prior to such adjustment; provided, however, that the Company shall deliver to
such holder a due bill or other appropriate instrument evidencing such holder's
right to receive such additional shares upon the occurrence of the event
requiring such adjustment.

                  (m) Anything in this Section 11 to the contrary
notwithstanding, the Company shall be entitled to make such adjustments in the
Purchase Price, in addition to those adjustments expressly required by this
Section 11, as and to the extent that it, in its sole discretion, shall
determine to be advisable in order that any consolidation or subdivision of the
Preferred Shares, issuance wholly for cash of any Preferred Shares at less than
the current market price, issuance wholly for cash of Preferred Shares or
securities which by their terms are convertible into or exchangeable for
Preferred Shares, dividends on Preferred Shares payable in Preferred Shares or
issuance of rights, options or warrants referred to hereinabove in Section
11(b), hereafter made by the Company to holders of its Preferred Shares shall
not be taxable to such stockholders.

                  (n) Anything in this Agreement to the contrary
notwithstanding, in the event that at any time after the date of this Agreement
and prior to the Distribution Date, the Company shall (i) declare or pay any
dividend on the Common Shares payable in Common Shares, or (ii) effect a
subdivision, combination or consolidation of the Common Shares (by
reclassification or otherwise than by payment of dividends in Common Shares)
into a greater or lesser number of Common Shares, then in each such case (A) the
number of one one-thousandths of a Preferred Share purchasable after such event
upon proper exercise of each Right shall be determined by multiplying the number
of one one-thousandths of a Preferred Share so purchasable immediately prior to
such event by a fraction, the numerator of which is the
<PAGE>   34
                                                                              30

number of Common Shares outstanding immediately before such event and the
denominator of which is the number of Common Shares outstanding immediately
after such event, and (B) each Common Share outstanding immediately after such
event shall have issued with respect to it that number of Rights which each
Common Share outstanding immediately prior to such event had issued with respect
to it. The adjustments provided for in this Section 11(n) shall be made
successively whenever such a dividend is declared or paid or such a subdivision,
combination or consolidation is effected.

                  SECTION 12. Certificate of Adjusted Purchase Price or Number
of Shares. Whenever an adjustment is made as provided in Section 11 or 13
hereof, the Company shall promptly (a) prepare a certificate setting forth such
adjustment, and a brief statement of the facts accounting for such adjustment,
(b) file with the Rights Agent and with each transfer agent for the Common
Shares or the Preferred Shares a copy of such certificate and (c) mail a brief
summary thereof to each holder of a Right Certificate in accordance with Section
25 hereof (if so required under Section 25 hereof).

                  SECTION 13. Consolidation, Merger or Sale or Transfer of
Assets or Earning Power. (a) In the event, directly or indirectly, at any time
after a Person has become an Acquiring Person, (i) the Company shall consolidate
with, or merge with and into, any other Person, (ii) any Person shall
consolidate with the Company, or merge with and into the Company and the Company
shall be the continuing or surviving corporation of such merger and, in
connection with such merger, all or part of the Common Shares shall be changed
into or exchanged for stock or other securities of any other Person (or the
Company) or cash or any other property, or (iii) the Company shall sell or
otherwise transfer (or one or more of its Subsidiaries shall sell or otherwise
transfer), in one or more transactions, assets or earning power aggregating 50%
or more of the assets or earning power of the Company and its Subsidiaries
(taken as a whole) to any other Person other than the Company or one or more of
its wholly owned Subsidiaries (except, prior to the Spinoff Date in the case of
each of (i), (ii) and (iii) above, where such other Person is a Lucent Entity),
then, and upon the first occurrence of such
<PAGE>   35
                                                                              31

event, proper provision shall be made so that (A) each holder of a Right (except
as otherwise provided herein) shall thereafter have the right to receive, upon
the exercise thereof at a price equal to the then current Purchase Price
multiplied by the number of one one-thousandths of a Preferred Share for which a
Right is then exercisable, in accordance with the terms of this Agreement and in
lieu of Preferred Shares or Common Shares of the Company, such number of Common
Shares of such other Person (including the Company as successor thereto or as
the surviving corporation) as shall equal the result obtained by (1) multiplying
the then current Purchase Price by the number of one one-thousandths of a
Preferred Share for which a Right is then exercisable and dividing that product
by (2) 50% of the then Current Per Share Market Price of the Common Shares of
such other Person (determined pursuant to Section 11(d) hereof) on the date of
consummation of such consolidation, merger, sale or transfer, provided, however,
that the Purchase Price (as theretofore adjusted) and the number of Common
Shares of such other Person so receivable upon exercise of a Right shall be
subject to further adjustment as appropriate in accordance with Section 11(f)
hereof to reflect any events occurring in respect of the Common Shares of such
other Person after the occurrence of such consolidation, merger, sale or
transfer; (B) the issuer of such Common Shares shall thereafter be liable for,
and shall assume, by virtue of such consolidation, merger, sale or transfer, all
the obligations and duties of the Company pursuant to this Agreement; (C) the
term "Company" shall thereafter be deemed to refer to such issuer; and (D) such
issuer shall take such steps (including, but not limited to, the reservation of
a sufficient number of its Common Shares in accordance with Section 9 hereof) in
connection with such consummation as may be necessary to assure that the
provisions hereof shall thereafter be applicable, as nearly as reasonably may
be, in relation to the Common Shares thereafter deliverable upon the exercise of
the Rights; provided that, upon the subsequent occurrence of any consolidation,
merger, sale or transfer of assets or other extraordinary transaction in respect
of such other Person, each holder of a Right shall thereupon be entitled to
receive, upon exercise of a Right and payment of the Purchase Price as provided
in this Section 13(a), such cash, shares, rights, warrants and other property
which such holder would have been entitled to receive had such holder,
<PAGE>   36
                                                                              32

at the time of such transaction, owned the Common Shares of the other Person
receivable upon the exercise of a Right pursuant to this Section 13(a), and such
other Person shall take such steps (including, but not limited to, reservation
of shares of stock) as may be necessary to permit the subsequent exercise of the
Rights in accordance with the terms hereof for such cash, shares, rights,
warrants and other property.

                  (b) The other Person referred to in Section 13(a) (the
"Principal Party") shall mean:

                  (i) in the case of any transaction described in (i) or (ii) of
         the first sentence of Section 13(a) hereof: (A) the Person that is the
         issuer of the securities into which the Common Shares are converted in
         such merger or consolidation, or, if there is more than one such
         issuer, the issuer the Common Shares of which have the greatest
         aggregate market value of shares outstanding, or (B) if no securities
         are so issued, (x) the Person that is the other party to the merger, if
         such Person survives said merger, or, if there is more than one such
         Person, the Person the Common Shares of which have the greatest
         aggregate market value of shares outstanding or (y) if the Person that
         is the other party to the merger does not survive the merger, the
         Person that does survive the merger (including the Company if it
         survives) or (z) the Person resulting from the consolidation; and

                  (ii) in the case of any transaction described in (iii) of the
         first sentence of Section 13(a) hereof, the Person that is the party
         receiving the greatest portion of the assets or earning power
         transferred pursuant to such transaction or transactions, or, if each
         Person that is a party to such transaction or transactions receives the
         same portion of the assets or earning power so transferred or if the
         Person receiving the greatest portion of the assets or earning power
         cannot be determined, whichever of such Persons is the issuer of Common
         Shares having the greatest aggregate market value of shares
         outstanding;

provided, however, that in any such case described in the foregoing clause
(b)(i) or (b)(ii), if the Common Shares of
<PAGE>   37
                                                                              33

such Person are not at such time or has not been continuously over the preceding
12-month period registered under Section 12 of the Exchange Act, then (1) if
such Person is a direct or indirect Subsidiary of another Person the Common
Shares of which are and have been so registered, the term "Principal Party"
shall refer to such other Person, or (2) if such Person is a Subsidiary,
directly or indirectly, of more than one Person, the Common Shares of all of
which are and have been so registered, the term "Principal Party" shall refer to
whichever of such Persons is the issuer of Common Shares having the greatest
aggregate market value of shares outstanding, or (3) if such Person is owned,
directly or indirectly, by a joint venture formed by two or more Persons that
are not owned, directly or indirectly, by the same Person, the rules set forth
in clauses (1) and (2) above shall apply to each of the owners having an
interest in the venture as if the Person owned by the joint venture was a
Subsidiary of both or all of such joint venturers, and the Principal Party in
each such case shall bear the obligations set forth in this Section 13 in the
same ratio as its interest in such Person bears to the total of such interests.

                  (c) The Company shall not consummate any such consolidation,
merger, sale or transfer unless prior thereto the Company and such issuer shall
have executed and delivered to the Rights Agent an agreement confirming that the
requirements of Sections 13(a) and (b) hereof shall promptly be performed in
accordance with their terms and that such consolidation, merger, sale or
transfer of assets shall not result in a default by the Principal Party under
this Agreement as the same shall have been assumed by the Principal Party
pursuant to Sections 13(a) and (b) hereof and providing that, as soon as
practicable after executing such agreement pursuant to this Section 13, the
Principal Party will:

                  (i) prepare and file a registration statement under the
         Securities Act, if necessary, with respect to the Rights and the
         securities purchasable upon exercise of the Rights on an appropriate
         form, use its best efforts to cause such registration statement to
         become effective as soon as practicable after such filing and use its
         best efforts to cause such registration statement to remain effective
         (with a prospectus at all
<PAGE>   38
                                                                              34

         times meeting the requirements of the Securities Act) until the
         Expiration Date and similarly comply with applicable state securities
         laws;

                  (ii) use its best efforts, if the Common Shares of the
         Principal Party shall be listed or admitted to trading on the New York
         Stock Exchange or on another national securities exchange, to list or
         admit to trading (or continue the listing of) the Rights and the
         securities purchasable upon exercise of the Rights on the New York
         Stock Exchange or such securities exchange, or, if the Common Shares of
         the Principal Party shall not be listed or admitted to trading on the
         New York Stock Exchange or a national securities exchange, to cause the
         Rights and the securities receivable upon exercise of the Rights to be
         authorized for quotation on NASDAQ or on such other system then in use;

                  (iii) deliver to holders of the Rights historical financial
         statements for the Principal Party which comply in all respects with
         the requirements for registration on Form 10 (or any successor form)
         under the Exchange Act; and

                  (iv) obtain waivers of any rights of first refusal or
         preemptive rights in respect of the Common Shares of the Principal
         Party subject to purchase upon exercise of outstanding Rights.

                  (d) In case the Principal Party has a provision in any of its
authorized securities or in its certificate of incorporation or by-laws or other
instrument governing its affairs, which provision would have the effect of (i)
causing such Principal Party to issue (other than to holders of Rights pursuant
to this Section 13), in connection with, or as a consequence of, the
consummation of a transaction referred to in this Section 13, Common Shares or
Common Stock Equivalents of such Principal Party at less than the then current
market price per share thereof (determined pursuant to Section 11(d) hereof) or
securities exercisable for, or convertible into, Common Shares or Common Stock
Equivalents of such Principal Party at less than such then current market price,
or (ii) providing for any special payment, tax or similar provision in
connection with the
<PAGE>   39
                                                                              35

issuance of the Common Shares of such Principal Party pursuant to the provisions
of Section 13, then, in such event, the Company hereby agrees with each holder
of Rights that it shall not consummate any such transaction unless prior thereto
the Company and such Principal Party shall have executed and delivered to the
Rights Agent a supplemental agreement providing that the provision in question
of such Principal Party shall have been canceled, waived or amended, or that the
authorized securities shall be redeemed, so that the applicable provision will
have no effect in connection with, or as a consequence of, the consummation of
the proposed transaction. The Company shall not enter into any transaction of
the kind referred to in this Section 13(i) if at the time of or immediately
after such transaction there are any rights, warrants, instruments or other
instruments or securities outstanding or any agreements or arrangements which
would eliminate or substantially diminish the benefits intended to be afforded
by the Rights, (ii) prior to, simultaneously with or immediately after such
consolidation, merger, sale, transfer or other transaction, the stockholders of
the Person who constitutes, or would constitute, the Principal Party for
purposes of Section 13(b) hereof shall have received a distribution of Rights
previously owned by such Person or any of its Affiliates or Associates or (iii)
the form or nature of organization of the Principal Party would preclude or
limit the exercisability of the Rights. The provisions of this Section 13 shall
similarly apply to successive mergers or consolidations or sales or other
transfers.

                  SECTION 14. Fractional Rights and Fractional Shares. (a) The
Company shall not be required to issue fractions of Rights or to distribute
Right Certificates which evidence fractional Rights. In lieu of such fractional
Rights, there shall be paid to the registered holders of the Right Certificates
with regard to which such fractional Rights would otherwise be issuable, an
amount in cash equal to the same fraction of the current market value of a whole
Right. For the purposes of this Section 14(a), the current market value of a
whole Right shall be the closing price of the Rights for the Trading Day
immediately prior to the date on which such fractional Rights would have been
otherwise issuable. The closing price for any day shall be the last sale price,
regular way, or, in case no such sale takes place on such day, the average of
the
<PAGE>   40
                                                                              36

closing bid and asked prices, regular way, in either case, as reported in the
principal consolidated transaction reporting system with respect to securities
listed or admitted to trading on the New York Stock Exchange or, if the Rights
are not listed or admitted to trading on the New York Stock Exchange, as
reported in the principal consolidated transaction reporting system with respect
to securities listed on the principal national securities exchange on which the
Rights are listed or admitted to trading or, if the Rights are not listed or
admitted to trading on any national securities exchange, the last quoted price
or, if not so quoted, the average of the high bid and low asked prices in the
over-the-counter market, as reported on the Nasdaq National Market or such other
system then in use or, if on any such date the Rights are not quoted by any such
organization, the average of the closing bid and asked prices as furnished by a
professional market maker making a market in the Rights selected by the Board of
Directors. If on any such date no such market maker is making a market in the
Rights, the fair value of the Rights on such date as determined in good faith by
the Board of Directors shall be used.

                  (b) The Company shall not be required to issue fractions of
Preferred Shares (other than fractions which are integral multiples of one
one-thousandth of a Preferred Share) upon exercise or exchange of the Rights or
to distribute certificates which evidence fractional Preferred Shares (other
than fractions which are integral multiples of one one-thousandth of a
Preferred Share). Interests on fractions of Preferred Shares in integral
multiples of one one-thousandth of a Preferred Share may, at the election of the
Company, be evidenced by depositary receipts, pursuant to an appropriate
agreement between the Company and a depositary selected by it; provided that
such agreement shall provide that the holders of such depositary receipts shall
have all the rights, privileges and preferences to which they are entitled as
beneficial owners of the Preferred Shares represented by such depositary
receipts. In lieu of fractional Preferred Shares that are not integral multiples
of one one-thousandth of a Preferred Share, the Company shall pay to the
registered holders of Right Certificates at the time such Rights are exercised
as herein provided an amount in cash equal to the same fraction of the current
market value of one Preferred Share. For the
<PAGE>   41
                                                                              37

purposes of this Section 14(b), the current market value of a Preferred Share
shall be the closing price of a Preferred Share (as determined pursuant to the
second sentence of Section 11(d)(i) hereof) for the Trading Day immediately
prior to the date of such exercise or exchange.

                  (c) The Company shall not be required to issue fractional
Common Shares or to distribute certificates which evidence fractional Common
Shares upon the exercise or exchange of Rights. In lieu of such fractional
Common Shares, the Company shall pay to the registered holders of the Right
Certificates with regard to which such fractional Common Shares would otherwise
be issuable an amount in cash equal to the same fraction of the current market
value of a whole Common Share (as determined in accordance with Section 14(a)
hereof) for the Trading Day immediately prior to the date of such exercise or
exchange.

                  (d) The holder of a Right by the acceptance of the Right
expressly waives his right to receive any fractional Rights or any fractional
shares upon exercise or exchange of a Right (except as provided above).

                  SECTION 15. Rights of Action. All rights of action in respect
of this Agreement, excepting the rights of action given to the Rights Agent
under Section 18 hereof, are vested in the respective registered holders of the
Right Certificates (and, prior to the Distribution Date, the registered holders
of the Common Shares); and any registered holder of any Right Certificate (or,
prior to the Distribution Date, of the Common Shares), without the consent of
the Rights Agent or of the holder of any other Right Certificate (or, prior to
the Distribution Date, of the Common Shares), may, in his own behalf and for his
own benefit, enforce, and may institute and maintain any suit, action or
proceeding against the Company to enforce, or otherwise act in respect of, his
right to exercise the Rights evidenced by such Right Certificate (or, prior to
the Distribution Date, such Common Shares) in the manner provided in therein and
in this Agreement. Without limiting the foregoing or any remedies available to
the holders of Rights, it is specifically acknowledged that the holders of
Rights would not have an adequate remedy at law for any breach of this Agreement
and will be entitled to specific performance of the obligations under, and
injunctive relief

<PAGE>   42
                                                                              38

against actual or threatened violations of the obligations of any Person subject
to, this Agreement.

                  SECTION 16. Agreement of Right Holders. Every holder of a
Right, by accepting the same, consents and agrees with the Company and the
Rights Agent and with every other holder of a Right that:

                  (a) prior to the Distribution Date, the Rights will be
transferable only in connection with the transfer of the Common Shares;

                  (b) after the Distribution Date, the Right Certificates are
transferable only on the registry books of the Rights Agent if surrendered at
the principal office of the Rights Agent, duly endorsed or accompanied by a
proper instrument of transfer; and

                  (c) the Company and the Rights Agent may deem and treat the
person in whose name the Right Certificate (or, prior to the Distribution Date,
the associated Common Shares certificate) is registered as the absolute owner
thereof and of the Rights evidenced thereby (notwithstanding any notations of
ownership or writing on the Right Certificate or the associated Common Shares
certificate made by anyone other than the Company or the Rights Agent) for all
purposes whatsoever, and neither the Company nor the Rights Agent, subject to
Section 7(e) hereof, shall be affected by any notice to the contrary.

                  SECTION 17. Right Certificate Holder Not Deemed a Stockholder.
No holder, as such, of any Right Certificate shall be entitled to vote, receive
dividends or be deemed for any purpose the holder of the Preferred Shares or any
other securities of the Company which may at any time be issuable on the
exercise or exchange of the Rights represented thereby, nor shall anything
contained herein or in any Right Certificate be construed to confer upon the
holder of any Right Certificate, as such, any of the rights of a stockholder of
the Company or any right to vote for the election of directors or upon any
matter submitted to stockholders at any meeting thereof, or to give or withhold
consent to any corporate action, or to receive notice of meetings or other
actions affecting stockholders (except as provided in this Agreement), or to
receive dividends or
<PAGE>   43
                                                                              39

subscription rights, or otherwise, until the Right or Rights evidenced by such
Right Certificate shall have been exercised or exchanged in accordance with the
provisions hereof.

                  SECTION 18. Concerning the Rights Agent. The Company agrees to
pay to the Rights Agent reasonable compensation for all services rendered by it
hereunder and, from time to time, on demand of the Rights Agent, its reasonable
expenses and counsel fees and other disbursements incurred in the administration
and execution of this Agreement and the exercise and performance of its duties
hereunder. The Company also agrees to indemnify the Rights Agent for, and to
hold it harmless against, any loss, liability, or expense incurred without
negligence, bad faith or willful misconduct on the part of the Rights Agent, for
anything done or omitted by the Rights Agent in connection with the acceptance
and administration of this Agreement, including the costs and expenses of
defending against any claim of liability in the premises.

                  The Rights Agent shall be protected and shall incur no
liability for, or in respect of any action taken, suffered or omitted by it in
connection with, its administration of this Agreement in reliance upon any Right
Certificate or certificate for the Preferred Shares or Common Shares or for
other securities of the Company, instrument of assignment or transfer, power of
attorney, endorsement, affidavit, letter, notice, direction, consent,
certificate, statement, or other paper or document believed by it to be genuine
and to be signed, executed and, where necessary, verified or acknowledged, by
the proper Person or Persons, or otherwise upon the advice of counsel as set
forth in Section 20 hereof.

                  SECTION 19. Merger or Consolidation or Change of Name of
Rights Agent. Any corporation into which the Rights Agent or any successor
Rights Agent may be merged or with which it may be consolidated, or any
corporation resulting from any merger or consolidation to which the Rights Agent
or any successor Rights Agent shall be a party, or any corporation succeeding to
the stock transfer or corporate trust powers of the Rights Agent or any
successor Rights Agent, shall be the successor to the Rights Agent under this
Agreement without the execution or filing of any paper or
<PAGE>   44
                                                                              40

any further act on the part of any of the parties hereto; provided that such
corporation would be eligible for appointment as a successor Rights Agent under
the provisions of Section 21 hereof. In case at the time such successor Rights
Agent shall succeed to the agency created by this Agreement, any of the Right
Certificates shall have been countersigned but not delivered, any such successor
Rights Agent may adopt the countersignature of the predecessor Rights Agent and
deliver such Right Certificates so countersigned; and, in case at that time any
of the Right Certificates shall not have been countersigned, any successor
Rights Agent may countersign such Right Certificates either in the name of the
predecessor Rights Agent or in the name of the successor Rights Agent; and in
all such cases such Right Certificates shall have the full force provided in the
Right Certificates and in this Agreement.

                  In case at any time the name of the Rights Agent shall be
changed and at such time any of the Right Certificates shall have been
countersigned but not delivered, the Rights Agent may adopt the countersignature
under its prior name and deliver Right Certificates so countersigned; and in
case at that time any of the Right Certificates shall not have been
countersigned, the Rights Agent may countersign such Right Certificates either
in its prior name or in its changed name; and in all such cases such Right
Certificates shall have the full force provided in the Right Certificates and in
this Agreement.

                  SECTION 20. Duties of Rights Agent. The Rights Agent
undertakes the duties and obligations imposed by this Agreement upon the
following terms and conditions, by all of which the Company and the holders of
Right Certificates, by their acceptance thereof, shall be bound:

                  (a) The Rights Agent may consult with legal counsel (who may
be legal counsel for the Company), and the opinion of such counsel shall be full
and complete authorization and protection to the Rights Agent as to any action
taken or omitted by it in good faith and in accordance with such opinion.

                  (b) Whenever in the performance of its duties under this
Agreement the Rights Agent shall deem it
<PAGE>   45
                                                                              41

necessary or desirable that any fact or matter be proved or established by the
Company prior to taking or suffering any action hereunder, such fact or matter
(unless other evidence in respect thereof be herein specifically prescribed) may
be deemed to be conclusively proved and established by a certificate signed by
any one of the Chairman of the Board, the Chief Executive Officer, the
President, any Vice President, the Treasurer or the Secretary of the Company and
delivered to the Rights Agent; and such certificate shall be full authorization
to the Rights Agent for any action taken or suffered in good faith by it under
the provisions of this Agreement in reliance upon such certificate.

                  (c) The Rights Agent shall be liable hereunder to the Company
and any other Person only for its own negligence, bad faith or willful
misconduct.

                  (d) The Rights Agent shall not be liable for or by reason of
any of the statements of fact or recitals contained in this Agreement or in the
Right Certificates (except its countersignature thereof) or be required to
verify the same, but all such statements and recitals are and shall be deemed to
have been made by the Company only.

                  (e) The Rights Agent shall not be under any responsibility in
respect of the validity of this Agreement or the execution and delivery hereof
(except the due execution hereof by the Rights Agent) or in respect of the
validity or execution of any Right Certificate (except its countersignature
thereof); nor shall it be responsible for any breach by the Company of any
covenant or condition contained in this Agreement or in any Right Certificate;
nor shall it be responsible for any change in the exercisability of the Rights
(including the Rights becoming void pursuant to Section 11(a)(ii) hereof) or any
adjustment in the terms of the Rights (including the manner, method or amount
thereof) provided for in Section 3, 11, 13, 23 or 24, or the ascertaining of the
existence of facts that would require any such change or adjustment (except with
respect to the exercise of Rights evidenced by Right Certificates after actual
notice that such change or adjustment is required); nor shall it by any act
hereunder be deemed to make any representation or warranty as to the
authorization or reservation of any Preferred Shares to be issued pursuant to
this Agreement or any Right Certificate or as to whether any
<PAGE>   46
                                                                              42

Preferred Shares will, when issued, be validly authorized and issued, fully paid
and nonassessable.

                  (f) The Company agrees that it will perform, execute,
acknowledge and deliver or cause to be performed, executed, acknowledged and
delivered all such further and other acts, instruments and assurances as may
reasonably be required by the Rights Agent for the carrying out or performing by
the Rights Agent of the provisions of this Agreement.

                  (g) The Rights Agent is hereby authorized and directed to
accept instructions with respect to the performance of its duties hereunder from
any one of the Chairman of the Board, the Chief Executive Officer, the
President, any Vice President, the Secretary or the Treasurer of the Company,
and to apply to such officers for advice or instructions in connection with its
duties, and it shall not be liable for any action taken or suffered by it in
good faith in accordance with instructions of any such officer or for any delay
in acting while waiting for those instructions.

                  (h) The Rights Agent and any stockholder, director, officer or
employee of the Rights Agent may buy, sell or deal in any of the Rights or other
securities of the Company or become pecuniarily interested in any transaction in
which the Company may be interested, or contract with or lend money to the
Company or otherwise act as fully and freely as though it were not Rights Agent
under this Agreement. Nothing herein shall preclude the Rights Agent from acting
in any other capacity for the Company or for any other legal entity.

                  (i) The Rights Agent may execute and exercise any of the
rights or powers hereby vested in it or perform any duty hereunder either itself
or by or through its attorneys or agents, and the Rights Agent shall not be
answerable or accountable for any act, default, neglect or misconduct of any
such attorneys or agents or for any loss to the Company resulting from any such
act, default, neglect or misconduct, provided reasonable care was exercised in
the selection and continued employment thereof.
<PAGE>   47
                                                                              43

                  (j) If, with respect to any Rights Certificate surrendered to
the Rights Agent for exercise or transfer, the certificate contained in the form
of assignment or the form of election to purchase set forth on the reverse
thereof, as the case may be, has not been completed to certify the holder is not
an Acquiring Person (or an Affiliate or Associate thereof) or a transferee
thereof, the Rights Agent shall not take any further action with respect to such
requested exercise or transfer without first consulting with the Company.

                  SECTION 21. Change of Rights Agent. The Rights Agent or any
successor Rights Agent may resign and be discharged from its duties under this
Agreement upon 30 days' notice in writing mailed to the Company and to each
transfer agent of the Common Shares or Preferred Shares by registered or
certified mail, and, following the Distribution Date, to the holders of the
Right Certificates by first-class mail. The Company may remove the Rights Agent
or any successor Rights Agent upon 30 days' notice in writing, mailed to the
Rights Agent or successor Rights Agent, as the case may be, and to each transfer
agent of the Common Shares or Preferred Shares by registered or certified mail,
and, following the Distribution Date, to the holders of the Right Certificates
by first-class mail. If the Rights Agent shall resign or be removed or shall
otherwise become incapable of acting, the Company shall appoint a successor to
the Rights Agent. If the Company shall fail to make such appointment within a
period of 30 days after giving notice of such removal or after it has been
notified in writing of such resignation or incapacity by the resigning or
incapacitated Rights Agent or by the holder of a Right Certificate (who shall,
with such notice, submit his Right Certificate for inspection by the Company),
then the registered holder of any Right Certificate may apply to any court of
competent jurisdiction for the appointment of a new Rights Agent. Any successor
Rights Agent, whether appointed by the Company or by such a court, shall be a
corporation organized and doing business under the laws of the United States or
of the State of New York (or of any other state of the United States so long as
such corporation is authorized to do business as a banking institution in the
State of New York, in good standing, having an office in the State of New York,
which is authorized under such laws to exercise corporate trust or stock
transfer powers and is subject to
<PAGE>   48
                                                                              44

supervision or examination by federal or state authority and which has at the
time of its appointment as Rights Agent a combined capital and surplus of at
least $50 million. After appointment, the successor Rights Agent shall be vested
with the same powers, rights, duties and responsibilities as if it had been
originally named as Rights Agent without further act or deed; but the
predecessor Rights Agent shall deliver and transfer to the successor Rights
Agent any property at the time held by it hereunder, and execute and deliver any
further assurance, conveyance, act or deed necessary for the purpose. Not later
than the effective date of any such appointment, the Company shall file notice
thereof in writing with the predecessor Rights Agent and each transfer agent of
the Common Shares or Preferred Shares, and, following the Distribution Date,
mail a notice thereof in writing to the registered holders of the Right
Certificates. Failure to give any notice provided for in this Section 21,
however, or any defect therein, shall not affect the legality or validity of the
resignation or removal of the Rights Agent or the appointment of the successor
Rights Agent, as the case may be.

                  SECTION 22. Issuance of New Right Certificates.
Notwithstanding any of the provisions of this Agreement or of the Rights to the
contrary, the Company may, at its option, issue new Right Certificates
evidencing Rights in such form as may be approved by the Board of Directors to
reflect any adjustment or change in the Purchase Price and the number or kind or
class of shares or other securities or property purchasable under the Right
Certificates made in accordance with the provisions of this Agreement. In
addition, in connection with the issuance or sale of Common Shares following the
Distribution Date and prior to the Expiration Date, the Company may with respect
to Common Shares so issued or sold pursuant to (i) the exercise of stock
options, (ii) under any employee plan or arrangement, (iii) upon the exercise,
conversion or exchange of securities, notes or debentures issued by the Company,
or (iv) a contractual obligation of the Company, in each case existing prior to
the Distribution Date, issue Rights Certificates representing the appropriate
number of Rights in connection with such issuance or sale; provided, however,
that (i) no such Right Certificate shall be issued if, and to the extent that,
the Company shall be advised by counsel that such issuance would create a
significant risk of
<PAGE>   49
                                                                              45

material adverse tax consequences to the Company or the Person to whom such
Right Certificate would be issued, (ii) no such Right Certificate shall be
issued if, and to the extent that, appropriate adjustment shall otherwise have
been made in lieu of the issuance thereof and (iii) no such Right Certificate
shall be issued in respect of Rights that have become void pursuant to the terms
hereof.

                  SECTION 23. Redemption. (a) The Board of Directors may, at its
option, at any time prior to such time as any Person becomes an Acquiring
Person, redeem all but not less than all the then outstanding Rights at a
redemption price of $.01 per Right, appropriately adjusted to reflect any stock
split, stock dividend or similar transaction occurring in respect of the Common
Shares after the date hereof (such redemption price being hereinafter referred
to as the "Redemption Price"). The redemption of the Rights may be made
effective at such time, on such basis and with such conditions as the Board of
Directors, in its sole discretion, may establish. The Redemption Price shall be
payable, at the option of the Company, in cash, Common Shares, or such other
form of consideration as the Board of Directors shall determine.

                  (b) Immediately upon the action of the Board of Directors
ordering the redemption of the Rights pursuant to paragraph (a) of this Section
23 (or at such later time as the Board of Directors may establish for the
effectiveness of such redemption), and without any further action and without
any notice, the right to exercise the Rights will terminate and the only right
thereafter of the holders of Rights shall be to receive the Redemption Price.
The Company shall promptly give public notice of any such redemption; provided,
however, that the failure to give, or any defect in, any such notice shall not
affect the validity of such redemption. Within 10 days after such action of the
Board of Directors ordering the redemption of the Rights (or at such later time
as the Board of Directors may establish for the effectiveness of such
redemption), the Company shall mail a notice of redemption to all the holders of
the then outstanding Rights at their last addresses as they appear upon the
registry books of the Rights Agent or, prior to the Distribution Date, on the
registry books of the transfer agent for the Common Shares. Any notice which is
mailed in
<PAGE>   50
                                                                              46

the manner herein provided shall be deemed given, whether or not the holder
receives the notice. Each such notice of redemption will state the method by
which the payment of the Redemption Price will be made. Neither the Company nor
any of its Affiliates or Associates may redeem, acquire or purchase for value
any Rights at any time in any manner other than that specifically set forth in
this Section 23 or in Section 24 hereof, and other than in connection with the
acquisition of Common Shares prior to the Distribution Date.

                  SECTION 24. Exchange. (a) The Board of Directors may, at its
option, at any time after any Person becomes an Acquiring Person, exchange all
or part of the then outstanding and exercisable Rights (which shall not include
Rights that have become void pursuant to the provisions of Section 11(a)(ii)
hereof) for Common Shares at an exchange ratio of one Common Share per Right,
appropriately adjusted to reflect any stock split, stock dividend or similar
transaction occurring in respect of the Common Shares after the date hereof
(such exchange ratio being hereinafter referred to as the "Exchange Ratio").
Notwithstanding the foregoing, the Board of Directors shall not be empowered to
effect such exchange at any time after any Person (other than the Company, any
Subsidiary of the Company, any employee benefit plan of the Company or of any
Subsidiary of the Company or any entity holding Common Shares for or pursuant to
the terms of any such plan or, prior to the Spinoff Date, any Lucent Entity),
together with all Affiliates and Associates of such Person, becomes the
Beneficial Owner of 50% or more of the Common Shares then outstanding. From and
after the occurrence of an event specified in Section 13(a) hereof, any Rights
that theretofore have not been exchanged pursuant to this Section 24(a) shall
thereafter be exercisable only in accordance with Section 13 and may not be
exchanged pursuant to this Section 24(a). The exchange of the Rights by the
Board of Directors may be made effective at such time, on such basis and with
such conditions as the Board of Directors in its sole discretion may establish.

                  (b) Immediately upon the effectiveness of the action of the
Board of Directors ordering the exchange of any Rights pursuant to paragraph (a)
of this Section 24 and without any further action and without any notice, the
right to exercise such Rights shall terminate and the only right
<PAGE>   51
                                                                              47

thereafter of a holder of such Rights shall be to receive that number of Common
Shares equal to the number of such Rights held by such holder multiplied by the
Exchange Ratio. The Company shall promptly give public notice of any such
exchange; provided, however, that the failure to give, or any defect in, such
notice shall not affect the validity of such exchange. The Company promptly
shall mail a notice of any such exchange to all of the holders of such Rights at
their last addresses as they appear upon the registry books of the Rights Agent.
Any notice which is mailed in the manner herein provided shall be deemed given,
whether or not the holder receives the notice. Each such notice of exchange will
state the method by which the exchange of the Common Shares for Rights will be
effected and, in the event of any partial exchange, the number of Rights which
will be exchanged. Any partial exchange shall be effected pro rata based on the
number of Rights (other than Rights which have become void pursuant to the
provisions of Section 11(a)(ii) hereof) held by each holder of Rights.

                  (c) The Company may at its option substitute and, in the event
that there shall not be sufficient Common Shares issued but not outstanding or
authorized but unissued to permit any exchange of Rights as contemplated in
accordance with this Section 24, the Company shall substitute to the extent of
such insufficiency, for each Common Share that would otherwise be issuable upon
exchange of a Right, a number of Preferred Shares or fraction thereof (or
equivalent preferred shares) such that the Current Per Share Market Price of one
Preferred Share (or equivalent preferred share) multiplied by such number or
fraction is equal to the Current Per Share Market Price of one Common Share as
of the date of issuance of such Preferred Shares (or equivalent preferred share)
or fraction thereof.

                  (d) The Company shall not be required to issue fractions of
Common Shares or to distribute certificates which evidence fractional Common
Shares. In lieu of such fractional Common Shares, the Company shall pay to the
registered holders of the Right Certificates with regard to which such
fractional Common Shares would otherwise be issuable an amount in cash equal to
the same fraction of the current market value of a whole Common Share. For the
purposes of this paragraph (d), the current market value of a whole Common Share
shall be the closing price of a Common
<PAGE>   52
                                                                              48

Share (as determined pursuant to the second sentence of Section 11(d)(i) hereof)
for the Trading Day immediately prior to the date of exchange pursuant to this
Section 24.

                  SECTION 25. Notice of Certain Events. (a) In case the Company
shall at any time after the earlier of the Distribution Date or the Shares
Acquisition Date propose (i) to pay any dividend payable in stock of any class
to the holders of its Preferred Shares or to make any other distribution to the
holders of its Preferred Shares (other than a regular quarterly cash dividend),
(ii) to offer to the holders of its Preferred Shares rights or warrants to
subscribe for or to purchase any additional Preferred Shares or shares of stock
of any class or any other securities, rights or options, (iii) to effect any
reclassification of its Preferred Shares (other than a reclassification
involving only the subdivision of outstanding Preferred Shares), (iv) to effect
any consolidation or merger into or with, or to effect any sale or other
transfer (or to permit one or more of its Subsidiaries to effect any sale or
other transfer), in one or more transactions, of 50% or more of the assets or
earning power of the Company and its Subsidiaries (taken as a whole) to, any
other Person, (v) to effect the liquidation, dissolution or winding up of the
Company, or (vi) to declare or pay any dividend on the Common Shares payable in
Common Shares or to effect a subdivision, combination or consolidation of the
Common Shares (by reclassification or otherwise than by payment of dividends in
Common Shares), then, in each such case, the Company shall give to each holder
of a Right Certificate, in accordance with Section 26 hereof, a notice of such
proposed action, which shall specify the record date for the purposes of such
stock dividend, or distribution of rights or warrants, or the date on which such
reclassification, consolidation, merger, sale, transfer, liquidation,
dissolution, subdivision or winding up is to take place and the date of
participation therein by the holders of the Common Shares and/or Preferred
Shares, if any such date is to be fixed, and such notice shall be so given in
the case of any action covered by clause (i) or (ii) above at least 10 days
prior to the record date for determining holders of the Preferred Shares for
purposes of such action, and in the case of any such other action, at least 10
days prior to the date of the taking of such proposed action or the date of
participation therein by the holders of the Common Shares
<PAGE>   53
                                                                              49

and/or Preferred Shares, whichever shall be the earlier; provided, that, prior
to the Distribution Date, any notice in regard to a declaration or payment of
any dividend on the Common Shares payable in Common Shares or to effect a
subdivision, combination or consolidation of the Common Shares (by
reclassification or otherwise than by payment of dividends in Common Shares)
shall be adequately given if given within a reasonable time after the issuance
date for such stock dividend or effective date of such subdivision, combination
or consolidation.

                  (b) In case the event set forth in Section 11(a)(ii) or
Section 13 hereof shall occur, then the Company shall as soon as practicable
thereafter give to each holder of a Right Certificate (or if occurring prior to
the Distribution Date, the holders of the Common Shares), in accordance with
Section 26 hereof, a notice of the occurrence of such event, which notice shall
describe such event and the consequences of such event to holders of Rights
under Section 11(a)(ii) and Section 13 hereof.

                  SECTION 26. Notices. Notices or demands authorized by this
Agreement to be given or made by the Rights Agent or by the holder of any Right
Certificate to or on the Company shall be sufficiently given or made if sent by
first-class mail, postage prepaid, addressed (until another address is filed in
writing with the Rights Agent) as follows:

                  Avaya Inc.
                  211 Mount Airy Road
                  Basking Ridge, NJ 07920
                  Attention: Corporate Secretary

Subject to the provisions of Section 21 hereof, any notice or demand authorized
by this Agreement to be given or made by the Company or by the holder of any
Right Certificate to or on the Rights Agent shall be sufficiently given or made
if sent by first-class mail, postage prepaid, addressed (until another address
is filed in writing with the Company) as follows:

                  The Bank of New York
                  One Wall Street
                  New York, NY 10286
<PAGE>   54
                                                                              50

                  Attention: Corporate Secretary

Notices or demands authorized by this Agreement to be given or made by the
Company or the Rights Agent to the holder of any Right Certificate shall be
sufficiently given or made if sent by first-class mail, postage prepaid,
addressed to such holder at the address of such holder as shown on the registry
books of the Company.

                  SECTION 27. Supplements and Amendments. At any time prior to
the time any person becomes an Acquiring Person, and subject to the last
sentence of this Section 27, the Company may, and the Rights Agent shall if the
Company so directs, supplement or amend any provision of this Rights Agreement
in any manner which the Company may deem necessary or desirable (including the
date on which the Expiration Date or the Distribution Date shall occur, the
amount of the Purchase Price, the definition of "Acquiring Person" or the time
during which the Rights may be redeemed pursuant to Section 23) without the
approval of any holder of Rights. From and after the time any Person becomes an
Acquiring Person, and subject to applicable law and the last sentence of this
Section 27, the Company may, and the Rights Agent shall if the Company so
directs, amend this Agreement without the approval of any holders of Rights (a)
to cure any ambiguity or to correct or supplement any provision contained herein
which may be defective or inconsistent with any other provision of this Rights
Agreement or (b) to otherwise change or supplement any other provisions in this
Agreement in any matter which the Company may deem necessary or desirable and
which in each such case shall not (i) adversely affect the interests of the
holders of Rights as such (other than an Acquiring Person or an Affiliate or
Associate of an Acquiring Person) (ii) cause this Agreement again to become
amendable other than in accordance with this sentence or (iii) cause the Rights
again to become redeemable. Any supplement or amendment to this Agreement duly
approved by the Company that does not amend Section 19, 20 or 21 in a manner
adverse to the Rights Agent shall become effective immediately upon execution by
the Company, whether or not also executed by the Rights Agent. In addition,
notwithstanding anything to the contrary contained in this Rights Agreement, no
supplement or amendment to this Rights Agreement shall be made which reduces the
Redemption Price (except as required by Section 11(a)(i)).
<PAGE>   55
                                                                              51

                  SECTION 28. Successors. All the covenants and provisions of
this Agreement by or for the benefit of the Company or the Rights Agent shall
bind and inure to the benefit of their respective successors and assigns
hereunder.

                  SECTION 29. Benefits of this Agreement. Nothing in this
Agreement shall be construed to give to any Person other than the Company, the
Rights Agent and the registered holders of the Right Certificates (and, prior to
the Distribution Date, the Common Shares) any legal or equitable right, remedy
or claim under this Agreement; but this Agreement shall be for the sole and
exclusive benefit of the Company, the Rights Agent and the registered holders of
the Right Certificates (and, prior to the Distribution Date, the Common Shares).

                  SECTION 30. Severability. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction or
other authority to be invalid, void or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected, impaired or invalidated.

                  SECTION 31. Governing Law. This Agreement and each Right
Certificate issued hereunder shall be deemed to be a contract made under the
laws of the State of Delaware and for all purposes shall be governed by and
construed in accordance with the laws of such State applicable to contracts to
be made and performed entirely within such State.

                  SECTION 32. Counterparts. This Agreement may be executed in
any number of counterparts and each of such counterparts shall for all purposes
be deemed to be an original, and all such counterparts shall together constitute
but one and the same instrument.

                  SECTION 33. Descriptive Headings. Descriptive headings of the
several Sections of this Agreement are inserted for convenience only and shall
not control or affect the meaning or construction of any of the provisions
hereof.
<PAGE>   56
                                                                              52

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

                                    AVAYA INC.,

                                       by
                                          ------------------------------------
                                          Name:
                                          Title:

Attest:

  by
    ---------------------------
    Name:
    Title:

                                    THE BANK OF NEW YORK,

                                       by
                                          ------------------------------------
                                          Name:
                                          Title:

Attest:

  by
    ---------------------------
    Name:
    Title:
<PAGE>   57
                                                                       EXHIBIT A

                                      FORM

                                       of

                           CERTIFICATE OF DESIGNATIONS

                                       of

                  SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

                                       of

                                   AVAYA INC.

                         (Pursuant to Section 151 of the
                        Delaware General Corporation Law)

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

                  Avaya Inc., a corporation organized and existing under the
General Corporation Law of the State of Delaware (hereinafter called the
"Corporation"), hereby certifies that the following resolution was adopted by
the Board of Directors of the Corporation as required by Section 151 of the
General Corporation Law on [-], 2000:

                  RESOLVED, that pursuant to the authority granted to and vested
in the Board of Directors of this Corporation (hereinafter called the "Board of
Directors" or the "Board") in accordance with the provisions of the Restated
Certificate of Incorporation, the Board of Directors hereby creates a series of
Preferred Stock, par value $1.00 per share, of the Corporation (the "Preferred
Stock") and hereby states the designation and number of shares thereof and the
voting and other powers, preferences and relative, participating, optional or
other rights of the shares of such series and the qualifications, limitations
and restrictions thereof are as follows:

                  Series A Junior Participating Preferred Stock:

                  Section 1. Designation and Amount. The shares of such series
shall be designated as "Series A Junior
<PAGE>   58
                                                                               2

Participating Preferred Stock" (the "Series A Preferred Stock") and the number
of shares constituting the Series A Preferred Stock shall be [ ]. Such number of
shares may be increased or decreased by resolution of the Board of Directors;
provided that no decrease shall reduce the number of shares of Series A
Preferred Stock to a number less than the number of shares then outstanding plus
the number of shares reserved for issuance upon the exercise of outstanding
options, rights or warrants or upon the conversion of any outstanding securities
issued by the Corporation convertible into Series A Preferred Stock.
<PAGE>   59
                                                                               3

                  Section 2. Dividends and Distributions.

                  (A) Subject to the rights of the holders of any shares of any
series of Preferred Stock (or any similar stock) ranking prior and superior to
the Series A Preferred Stock with respect to dividends, the holders of shares of
Series A Preferred Stock, in preference to the holders of Common Stock, par
value $.01 per share (the "Common Stock"), of the Corporation, and of any other
junior stock, shall be entitled to receive, when, as and if declared by the
Board of Directors out of funds legally available for the purpose, quarterly
dividends payable in cash on the first day of March, June, September and
December in each year (each such date being referred to herein as a "Quarterly
Dividend Payment Date"), commencing on the first Quarterly Dividend Payment Date
after the first issuance of a share or fraction of a share of Series A Preferred
Stock, in an amount per share (rounded to the nearest cent) equal to the greater
of (a) $1 or (b) subject to the provision for adjustment hereinafter set forth,
1,000 times the aggregate per share amount of all cash dividends, and 1,000
times the aggregate per share amount (payable in kind) of all non-cash dividends
or other distributions, other than a dividend payable in shares of Common Stock
or a subdivision of the outstanding shares of Common Stock (by reclassification
or otherwise), declared on the Common Stock since the immediately preceding
Quarterly Dividend Payment Date or, with respect to the first Quarterly Dividend
Payment Date, since the first issuance of any share or fraction of a share of
Series A Preferred Stock. In the event the Corporation shall at any time after
[-] declare and pay any dividend on the Common Stock payable in shares of Common
Stock, or effect a subdivision or combination or consolidation of the
outstanding shares of Common Stock (by reclassification or otherwise than by
payment of a dividend in shares of Common Stock) into a greater or lesser number
of shares of Common Stock, then in each such case the amount to which holders of
shares of Series A Preferred Stock were entitled immediately prior to such event
under clause (b) of the preceding sentence shall be adjusted by multiplying such
amount by a fraction, the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.
<PAGE>   60
                                                                               4

                  (B) The Corporation shall declare a dividend or distribution
on the Series A Preferred Stock as provided in paragraph (A) of this Section
immediately after it declares a dividend or distribution on the Common Stock
(other than a dividend payable in shares of Common Stock); provided that, in the
event no dividend or distribution shall have been declared on the Common Stock
during the period between any Quarterly Dividend Payment Date and the next
subsequent Quarterly Dividend Payment Date, a dividend of $1 per share on the
Series A Preferred Stock shall nevertheless be payable on such subsequent
Quarterly Dividend Payment Date.

                  (C) Dividends shall begin to accrue and be cumulative on
outstanding shares of Series A Preferred Stock from the Quarterly Dividend
Payment Date next preceding the date of issue of such shares, unless the date of
issue of such shares is prior to the record date for the first Quarterly
Dividend Payment Date, in which case dividends on such shares shall begin to
accrue from the date of issue of such shares, or unless the date of issue is a
Quarterly Dividend Payment Date or is a date after the record date for the
determination of holders of shares of Series A Preferred Stock entitled to
receive a quarterly dividend and before such Quarterly Dividend Payment Date, in
either of which events such dividends shall begin to accrue and be cumulative
from such Quarterly Dividend Payment Date. Accrued but unpaid dividends shall
not bear interest. Dividends paid on the shares of Series A Preferred Stock in
an amount less than the total amount of such dividends at the time accrued and
payable on such shares shall be allocated pro rata on a share-by-share basis
among all such shares at the time outstanding. The Board of Directors may fix a
record date for the determination of holders of shares of Series A Preferred
Stock entitled to receive payment of a dividend or distribution declared
thereon, which record date shall be not more than 60 days prior to the date
fixed for the payment thereof.

                  Section 3. Voting Rights. The holders of shares of Series A
Preferred Stock shall have the following voting rights:
<PAGE>   61
                                                                               5

                  (A) Subject to the provision for adjustment hereinafter set
forth, each share of Series A Preferred Stock shall entitle the holder thereof
to 1,000 votes on all matters submitted to a vote of the stockholders of the
Corporation. In the event the Corporation shall at any time declare or pay any
dividend on the Common Stock payable in shares of Common Stock, or effect a
subdivision or combination or consolidation of the outstanding shares of Common
Stock (by reclassification or otherwise than by payment of a dividend in shares
of Common Stock) into a greater or lesser number of shares of Common Stock, then
in each such case the number of votes per share to which holders of shares of
Series A Preferred Stock were entitled immediately prior to such event shall be
adjusted by multiplying such number by a fraction, the numerator of which is the
number of shares of Common Stock outstanding immediately after such event and
the denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

                  (B) Except as otherwise provided herein, in any other
Certificate of Designations creating a series of Preferred Stock or any similar
stock, or by law, the holders of shares of Series A Preferred Stock and the
holders of shares of Common Stock and any other capital stock of the Corporation
having general voting rights shall vote together as one class on all matters
submitted to a vote of stockholders of the Corporation.

                  (C) Except as set forth herein, or as otherwise provided by
law, holders of Series A Preferred Stock shall have no special voting rights and
their consent shall not be required (except to the extent they are entitled to
vote with holders of Common Stock as set forth herein) for taking any corporate
action.

                  (D) If, at the time of any annual meeting of stockholders for
the election of directors, the equivalent of six quarterly dividends (whether or
not consecutive) payable on any share or shares of Series A Preferred Stock are
in default, the number of directors constituting the Board of Directors of the
Corporation shall be increased by two. In addition to voting together with the
holders of Common Stock for the election of other directors of the Corporation,
the holders of record of the Series A Preferred
<PAGE>   62
                                                                               6

Stock, voting separately as a class to the exclusion of the holders of Common
Stock, shall be entitled at said meeting of stockholders (and at each subsequent
annual meeting of stockholders), unless all dividends in arrears on the Series A
Preferred Stock have been paid or declared and set apart for payment prior
thereto, to vote for the election of two directors of the Corporation, the
holders of any Series A Preferred Stock being entitled to cast a number of votes
per share of Series A Preferred Stock as is specified in paragraph (A) of this
Section 3. Each such additional director shall not be classified, but shall
serve until the next annual meeting of stockholders for the election of
directors, or until his successor shall be elected and shall qualify, or until
his right to hold such office terminates pursuant to the provisions of this
Section 3(D). Until the default in payments of all dividends which permitted the
election of said directors shall cease to exist, any director who shall have
been so elected pursuant to the provisions of this Section 3(D) may be removed
at any time, without cause, only by the affirmative vote of the holders of the
shares of Series A Preferred Stock at the time entitled to cast a majority of
the votes entitled to be cast for the election of any such director at a special
meeting of such holders called for that purpose, and any vacancy thereby created
may be filled by the vote of such holders. If and when such default shall cease
to exist, the holders of the Series A Preferred Stock shall be divested of the
foregoing special voting rights, subject to revesting in the event of each and
every subsequent like default in payments of dividends. Upon the termination of
the foregoing special voting rights, the terms of office of all persons who may
have been elected directors pursuant to said special voting rights shall
forthwith terminate, and the number of directors constituting the Board of
Directors shall be reduced by two. The voting rights granted by this Section
3(D) shall be in addition to any other voting rights granted to the holders of
the Series A Preferred Stock in this Section 3.

                  Section 4. Certain Restrictions.

                  (A) Whenever quarterly dividends or other dividends or
distributions payable on the Series A Preferred Stock as provided in Section 2
are in arrears, thereafter and until all accrued and unpaid dividends and
<PAGE>   63
                                                                               7

distributions, whether or not declared, on shares of Series A Preferred Stock
outstanding shall have been paid in full, the Corporation shall not:

                  (i) declare or pay dividends, or make any other distributions,
         on any shares of stock ranking junior (either as to dividends or upon
         liquidation, dissolution or winding up) to the Series A Preferred
         Stock;

                  (ii) declare or pay dividends, or make any other
         distributions, on any shares of stock ranking on a parity (either as to
         dividends or upon liquidation, dissolution or winding up) with the
         Series A Preferred Stock, except dividends paid ratably on the Series A
         Preferred Stock and all such parity stock on which dividends are
         payable or in arrears in proportion to the total amounts to which the
         holders of all such shares are then entitled;

                  (iii) redeem or purchase or otherwise acquire for
         consideration shares of any stock ranking junior (either as to
         dividends or upon liquidation, dissolution or winding up) to the Series
         A Preferred stock, provided that the Corporation may at any time
         redeem, purchase or otherwise acquire shares of any such junior stock
         in exchange for shares of any stock of the Corporation ranking junior
         (either as to dividends or upon dissolution, liquidation or winding up)
         to the Series A Preferred Stock; or

                  (iv) redeem or purchase or otherwise acquire for consideration
         any shares of Series A Preferred Stock, or any shares of stock ranking
         on a parity with the Series A Preferred Stock, except in accordance
         with a purchase offer made in writing or by publication (as determined
         by the Board of Directors) to all holders of such shares upon such
         terms as the Board of Directors, after consideration of the respective
         annual dividend rates and other relative rights and preferences of the
         respective series and classes, shall determine in good faith will
         result in fair and equitable treatment among the respective series or
         classes.
<PAGE>   64
                                                                               8

                  (B) The Corporation shall not permit any subsidiary of the
Corporation to purchase or otherwise acquire for consideration any shares of
stock of the Corporation unless the Corporation could, under paragraph (A) of
this Section 4, purchase or otherwise acquire such shares at such time and in
such manner.

                  Section 5. Reacquired Shares. Any shares of Series A Preferred
Stock purchased or otherwise acquired by the Corporation in any manner
whatsoever shall be retired promptly after the acquisition thereof. All such
shares shall upon their retirement become authorized but unissued shares of
Preferred Stock and may be reissued as part of a new series of Preferred Stock
subject to the conditions and restrictions on issuance set forth herein, in the
Restated Certificate of Incorporation, or in any other Certificate of
Designations creating a series of Preferred Stock or any similar stock or as
otherwise required by law.

                  Section 6. Liquidation, Dissolution or Winding Up. Upon any
liquidation, dissolution or winding up of the Corporation, no distribution shall
be made (1) to the holders of shares of stock ranking junior (either as to
dividends or upon liquidation, dissolution or winding up) to the Series A
Preferred Stock unless, prior thereto, the holders of shares of Series A
Preferred Stock shall have received $1,000 per share, plus an amount equal to
accrued and unpaid dividends and distributions thereon, whether or not declared,
to the date of such payment, provided that the holders of shares of Series A
Preferred Stock shall be entitled to receive an aggregate amount per share,
subject to the provision for adjustment hereinafter set forth, equal to 1,000
times the aggregate amount to be distributed per share to holders of shares of
Common Stock, or (2) to the holders of shares of stock ranking on a parity
(either as to dividends or upon liquidation, dissolution or winding up) with the
Series A Preferred Stock, except distributions made ratably on the Series A
Preferred Stock and all such parity stock in proportion to the total amounts to
which the holders of all such shares are entitled upon such liquidation,
dissolution or winding up. Neither the merger or consolidation of the
Corporation into or with another entity nor the merger or consolidation of any
other entity into or with the Corporation shall be deemed to be a liquidation,
dissolution or winding up of the Corporation
<PAGE>   65
                                                                               9

within the meaning of this Section 6. In the event the Corporation shall at any
time declare or pay any dividend on the Common Stock payable in shares of Common
Stock, or effect a subdivision or combination or consolidation of the
outstanding shares of Common Stock (by reclassification or otherwise than by
payment of a dividend in shares of Common Stock) into a greater or lesser number
of shares of Common Stock, then in each such case the aggregate amount to which
holders of shares of Series A Preferred Stock were entitled immediately prior to
such event under the proviso in clause (1) of the preceding sentence shall be
adjusted by multiplying such amount by a fraction the numerator of which is the
number of shares of Common Stock outstanding immediately after such event and
the denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

                  Section 7. Consolidation, Merger, etc. In case the Corporation
shall enter into any consolidation, merger, combination or other transaction in
which the outstanding shares of Common Stock are exchanged for or changed into
other stock or securities, cash and/or any other property, then in any such case
each share of Series A Preferred Stock shall at the same time be similarly
exchanged or changed into an amount per share, subject to the provision for
adjustment hereinafter set forth, equal to 1,000 times the aggregate amount of
stock, securities, cash and/or any other property (payable in kind), as the case
may be, into which or for which each share of Common Stock is changed or
exchanged. In the event the Corporation shall at any time declare or pay any
dividend on the Common Stock payable in shares of Common Stock, or effect a
subdivision or combination or consolidation of the outstanding shares of Common
Stock (by reclassification or otherwise than by payment of a dividend in shares
of Common Stock) into a greater or lesser number of shares of Common Stock, then
in each such case the amount set forth in the preceding sentence with respect to
the exchange or change of shares of Series A Preferred Stock shall be adjusted
by multiplying such amount by a fraction, the numerator of which is the number
of shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.
<PAGE>   66
                                                                              10

                  Section 8. No Redemption. The shares of Series A Preferred
Stock shall not be redeemable.

                  Section 9. Ranking. The Series A Junior Participating
Preferred Stock shall rank junior to all other series of the Preferred Stock as
to the payment of dividends and as to the distribution of assets upon
liquidation, dissolution or winding up, unless the terms of any such series
shall provide otherwise, and shall rank senior to the Common Stock as to such
matters.

                  Section 10. Amendment. At any time that any shares of Series A
Preferred Stock are outstanding, the Amended and Restated Certificate of
Incorporation of the Corporation shall not be amended in any manner which would
materially alter or change the powers, preferences or special rights of the
Series A Preferred Stock so as to affect them adversely without the affirmative
vote of the holders of at least two-thirds of the outstanding shares of Series A
Preferred Stock, voting separately as a single class.

                  IN WITNESS WHEREOF, this Certificate of Designations is
executed on behalf of the Corporation by its and attested by its this    day
of    , 2000.

Attest:
<PAGE>   67
                                                                       EXHIBIT B

                            Form of Right Certificate

Certificate No.  R-                                                       Rights

                  NOT EXERCISABLE AFTER SEPTEMBER 29, 2010 OR
                  EARLIER IF REDEMPTION OR EXCHANGE OCCURS.  THE
                  RIGHTS ARE SUBJECT TO REDEMPTION AT $0.01 PER
                  RIGHT AND TO EXCHANGE ON THE TERMS SET FORTH IN
                  THE RIGHTS AGREEMENT.

                  UNDER CERTAIN CIRCUMSTANCES, AS SET FORTH IN THE
                  RIGHTS AGREEMENT, RIGHTS OWNED BY OR TRANSFERRED
                  TO ANY PERSON WHO IS OR BECOMES AN ACQUIRING
                  PERSON (AS DEFINED IN THE RIGHTS AGREEMENT) AND
                  CERTAIN TRANSFEREES THEREOF WILL BECOME NULL
                  AND VOID AND WILL NO LONGER BE TRANSFERABLE.

                                Right Certificate

                                   AVAYA INC.

                  This certifies that ________________, or registered assigns,
is the registered owner of the number of Rights set forth above, each of which
entitles the owner thereof, subject to the terms, provisions and conditions of
the Rights Agreement, dated as of September 29, 2000, as the same may be amended
from time to time (the "Rights Agreement"), between Avaya Inc., a Delaware
corporation (the "Company"), and The Bank of New York (the "Rights Agent"), to
purchase from the Company at any time after the Distribution Date (as such term
is defined in the Rights Agreement) and prior to 5:00 P.M., New York time, on
September 29, 2010 at the principal office of the Rights Agent, or at the office
of its successor as Rights Agent, one one-thousandth of a fully paid
non-assessable share of Series A Junior Participating Preferred Stock, par value
$1.00 per share, of the Company (the "Preferred Shares"), at a purchase price of
$[-] per one one-thousandth of a Preferred Share (the "Purchase Price"), upon
presentation and surrender of this Right Certificate with the Form of Election
to Purchase duly executed. The number of Rights evidenced by this Right
Certificate (and the number of one one-thousandth of a Preferred Share which
may be purchased
<PAGE>   68
                                                                               2

upon exercise hereof) set forth above, and the Purchase Price set forth above,
are the number and Purchase Price as of September 29, 2000, based on the
Preferred Shares as constituted at such date. As provided in the Rights
Agreement, the Purchase Price and the number of one one-thousandths of a
Preferred Share or other securities or property which may be purchased upon the
exercise of the Rights and the number of Rights evidenced by this Right
Certificate are subject to modification and adjustment upon the happening of
certain events.

                  This Right Certificate is subject to all of the terms,
provisions and conditions of the Rights Agreement, which terms, provisions and
conditions are hereby incorporated herein by reference and made a part hereof
and to which Rights Agreement reference is hereby made for a full description of
the rights, limitations of rights, obligations, duties and immunities hereunder
of the Rights Agent, the Company and the holders of the Right Certificates.
Copies of the Rights Agreement are on file at the principal executive offices of
the Company and the offices of the Rights Agent. The Company will mail to the
holder of this Right Certificate a copy of the Rights Agreement without charge
after receipt of a written request therefor.

                  This Right Certificate, with or without other Right
Certificates, upon surrender at the principal office of the Rights Agent, may be
exchanged for another Right Certificate or Right Certificates of like tenor and
date evidencing Rights entitling the holder to purchase a like aggregate number
of Preferred Shares as the Rights evidenced by the Right Certificate or Right
Certificates surrendered shall have entitled such holder to purchase. If this
Right Certificate shall be exercised in part, the holder shall be entitled to
receive upon surrender hereof another Right Certificate or Right Certificates
for the number of whole Rights not exercised.

                  Subject to the provisions of the Rights Agreement, the Rights
evidenced by this Right Certificate (i) may be redeemed by the Company at a
redemption price of $0.01 per Right or (ii) may be exchanged in whole or in part
for Preferred Shares or shares of the Company's Common Stock, par value $0.01
per share.
<PAGE>   69
                                                                               3

                  No fractional Preferred Shares will be issued upon the
exercise of any Right or Rights evidenced hereby (other than fractions which are
integral multiples of one one-thousandth of a Preferred Share, which may, at the
election of the Company, be evidenced by depositary receipts), but, in lieu
thereof, a cash payment will be made, as provided in the Rights Agreement.

                  No holder of this Right Certificate, as such, shall be
entitled to vote or receive dividends or be deemed for any purpose the holder of
the Preferred Shares or of any other securities of the Company which may at any
time be issuable on the exercise or exchange hereof, nor shall anything
contained in the Rights Agreement or herein be construed to confer upon the
holder hereof, as such, any of the rights of a stockholder of the Company or any
right to vote for the election of directors or upon any matter submitted to
stockholders at any meeting thereof, or to give or withhold consent to any
corporate action, or to receive notice of meetings or other actions affecting
stockholders (except as provided in the Rights Agreement), or to receive
dividends or subscription rights, or otherwise, until the Right or Rights
evidenced by this Right Certificate shall have been exercised or exchanged as
provided in the Rights Agreement.

                  This Right Certificate shall not be valid or obligatory for
any purpose until it shall have been countersigned by the Rights Agent.

                  WITNESS the facsimile signature of the proper officers of the
Company and its corporate seal. Dated as of      .

                                   AVAYA INC.,

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

ATTEST:
<PAGE>   70
                                                                               4

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

Countersigned:

THE BANK OF NEW YORK

  By
    --------------------------------
     Name:
     Title:
<PAGE>   71
                                                                               5

                    Form of Reverse Side of Right Certificate

                               FORM OF ASSIGNMENT

                (To be executed by the registered holder if such
               holder desires to transfer the Right Certificate.)

                  FOR VALUE RECEIVED __________ hereby sells, assigns and
transfers unto _________________________________________________________________

________________________________________________________________________________
                  (Please print name and address of transferee)

_______________________________________________________________________________
this Right Certificate, together with all right, title and interest therein, and
does hereby irrevocably constitute and appoint _________________ Attorney, to
transfer the within Right Certificate on the books of the within-named Company,
with full power of substitution.

Dated:  ______________, ___

                                            ____________________________________
                                            Signature

Signature Guaranteed:

                  Signatures must be guaranteed by a member firm of a registered
national securities exchange, a member of the National Association of Securities
Dealers, Inc., or a commercial bank or trust company having an office or
correspondent in the United States or by another eligible guarantor institution,
as defined in Rule 17Ad-15 under the Securities Exchange Act of 1934.

                  The undersigned hereby certifies that the Rights evidenced by
this Right Certificate are not beneficially owned by, were not acquired by the
undersigned from, and are not being assigned to an Acquiring Person or an
Affiliate or Associate thereof (as defined in the Rights Agreement).

                                            ____________________________________
                                            Signature
<PAGE>   72
                                                                               6

             Form of Reverse Side of Right Certificate -- continued

                          FORM OF ELECTION TO PURCHASE

              (To be executed if holder desires to exercise Rights
                     represented by the Right Certificate.)

To:  AVAYA INC.

                  The undersigned hereby irrevocably elects to exercise
___________ Rights represented by this Right Certificate to purchase the
Preferred Shares (or other securities or property) issuable upon the exercise of
such Rights and requests that certificates for such Preferred Shares (or other
securities or property) be issued in the name of:

Please insert social security
or other identifying number

________________________________________________________________________________
                         (Please print name and address)

________________________________________________________________________________

If such number of Rights shall not be all the Rights evidenced by this Right
Certificate, a new Right Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to:

Please insert social security
or other identifying number

________________________________________________________________________________
                         (Please print name and address)

________________________________________________________________________________

Dated:  ___________, ___

                                             ___________________________________
                                             Signature
<PAGE>   73
                                                                               7

Signature Guaranteed:

                  Signatures must be guaranteed by a member firm of a registered
national securities exchange, a member of the National Association of Securities
Dealers, Inc., or a commercial bank or trust company having an office or
correspondent in the United States or by another eligible guarantor institution,
as defined in Rule 17Ad-15 under the Securities Exchange Act of 1934.
<PAGE>   74
                                                                               8

             Form of Reverse Side of Right Certificate -- continued

                              ____________________

                  The undersigned hereby certifies that the Rights evidenced by
this Right Certificate are not beneficially owned by, and were not acquired by
the undersigned from, an Acquiring Person or an Affiliate or Associate thereof
(as defined in the Rights Agreement).

                                            ____________________________________
                                            Signature

                    ________________________________________

                                     NOTICE

                  The signature in the Form of Assignment or Form of Election to
Purchase, as the case may be, must conform to the name as written upon the face
of this Right Certificate in every particular, without alteration or enlargement
or any change whatsoever.

                  In the event the certification set forth above in the Form of
Assignment or the Form of Election to Purchase, as the case may be, is not
completed, the Company and the Rights Agent will deem the beneficial owner of
the Rights evidenced by this Right Certificate to be an Acquiring Person or an
Affiliate or Associate thereof (as defined in the Rights Agreement) and such
Assignment or Election to Purchase will not be honored.
<PAGE>   75
                                                                       EXHIBIT C

              UNDER CERTAIN CIRCUMSTANCES, AS SET FORTH IN THE
              RIGHTS AGREEMENT, RIGHTS OWNED BY OR TRANSFERRED
              TO ANY PERSON WHO IS OR BECOMES AN ACQUIRING
              PERSON (AS DEFINED IN THE RIGHTS AGREEMENT) AND
              CERTAIN TRANSFEREES THEREOF WILL BECOME NULL AND
              VOID AND WILL NO LONGER BE TRANSFERABLE.

                          SUMMARY OF RIGHTS TO PURCHASE
                                PREFERRED SHARES

             On      , 2000 (the "Record Date"), the Board of Directors of Avaya
Inc. (the "Company") declared a dividend of one preferred share purchase right
(a "Right") for each outstanding share of common stock, par value $0.01 per
share, of the Company (the "Common Shares"). The dividend is payable on [-],
2000 to the stockholders of record on that date. Each Right entitles the
registered holder to purchase from the Company one one-thousandth of a share of
Series A Junior Participating Preferred Stock, par value $1.00 per share, of the
Company (the "Preferred Shares") at a price of $[-] per one one-thousandth of a
Preferred Share (the "Purchase Price"), subject to adjustment. The description
and terms of the Rights are set forth in a Rights Agreement (the "Rights
Agreement") between the Company and The Bank of New York, as Rights Agent (the
"Rights Agent").

                  Until the earlier to occur of (i) 10 days following a public
announcement that a person or group of affiliated or associated persons (with
certain exceptions, an "Acquiring Person") have acquired beneficial ownership of
10% or more of the outstanding Common Shares or (ii) such date, if any, as may
be designated by the Board of Directors of the Company following the
commencement of, or first public disclosure of an intention to commence, a
tender or exchange offer for outstanding Common Shares which could result in
such person or group becoming the beneficial owner of more than 10% of the
outstanding Common Shares (the earlier of such dates being the "Distribution
Date"), the Rights will not be represented by a separate certificate, and will
not be transferable apart from the Common Stock, but will instead be evidenced,
(i) with respect to any of the shares of Common Stock held in uncertificated
book-entry
<PAGE>   76
                                                                               2

form (a "Book-Entry") outstanding as of the Record Date, by such Book-Entry and
(ii) with respect to the shares of Common Stock evidenced by Common Stock
certificates outstanding as of the Record Date, by such Common Stock
certificates, together with a copy of this Summary of Rights. The Rights
Agreement contains exceptions from its operating provision for Lucent and its
affiliates and associates prior to the time it effects the distribution of all
of its shares in the Company to its stockholders.

                  The Rights Agreement provides that, until the Distribution
Date (or earlier redemption or expiration of the Rights), the Rights will be
transferred with and only with the Common Shares. Until the Distribution Date
(or earlier redemption or expiration of the Rights), new Common Share
certificates issued after the Record Date upon transfer or new issuance of
Common Shares will contain a notation incorporating the Rights Agreement by
reference. Until the Distribution Date (or earlier redemption or expiration of
the Rights), the surrender for transfer of any certificates for Common Shares
outstanding as of the Record Date, even without such notation or a copy of this
Summary of Rights being attached thereto, will also constitute the transfer of
the Rights associated with the Common Shares represented by such certificate.
Until the Distribution Date (or earlier redemption or expiration of the Rights),
transfer on the Company's stock ownership records of Common Stock represented by
a Book-Entry or a certificate outstanding as the Record Date, and, in each case,
with or without a copy of this Summary of Rights attached thereto, will also
constitute the transfer of the Rights associated with the Common Stock
represented by such Book-Entry or certificate. As soon as practicable following
the Distribution Date, separate certificates evidencing the Rights ("Right
Certificates") will be mailed to holders of record of the Common Shares as of
the close of business on the Distribution Date and such separate Right
Certificates alone will evidence the Rights.

                  The Rights are not exercisable until the Distribution Date.
The Rights will expire on September 29, 2010 (the "Final Expiration Date"),
unless the Final Expiration Date is advanced or extended or unless the Rights
are earlier redeemed or exchanged by the Company, in each case, as described
below.
<PAGE>   77
                                                                               3

                  The Purchase Price payable, and the number of Preferred Shares
or other securities or property issuable, upon exercise of the Rights are
subject to adjustment from time to time to prevent dilution (i) in the event of
a stock dividend on, or a subdivision, combination or reclassification of, the
Preferred Shares; (ii) upon the grant to holders of the Preferred Shares of
certain rights or warrants to subscribe for or purchase Preferred Shares at a
price, or securities convertible into Preferred Shares with a conversion price;
less than the then-current market price of the Preferred Shares or (iii) upon
the distribution to holders of the Preferred Shares of evidences of indebtedness
or assets (excluding regular periodic cash dividends paid out of earnings or
retained earnings or dividends payable in Preferred Shares) or of subscription
rights or warrants (other than those referred to above).

                  The number of outstanding Rights and the number of one
one-thousandths of a Preferred Share issuable upon exercise of each Right are
also subject to adjustment in the event of a stock split of the Common Shares or
a stock dividend on the Common Shares payable in Common Shares or subdivisions,
consolidations or combinations of the Common Shares occurring, in any such case,
prior to the Distribution Date.

                  Preferred Shares purchasable upon exercise of the Rights will
not be redeemable. Each Preferred Share will be entitled to a minimum
preferential quarterly dividend payment of $1 per share but will be entitled to
an aggregate dividend of 1,000 times the dividend declared per Common Share. In
the event of liquidation, the holders of the Preferred Shares will be entitled
to a minimum preferential liquidation payment of $1,000 per share but will be
entitled to an aggregate payment of 1,000 times the payment made per Common
Share. Each Preferred Share will have 1,000 votes, voting together with the
Common Shares. Finally, in the event of any merger, consolidation or other
transaction in which Common Shares are exchanged, each Preferred Share will be
entitled to receive 1,000 times the amount received per Common Share. These
rights are protected by customary antidilution provisions.
<PAGE>   78
                                                                               4

                  Because of the nature of the Preferred Shares' dividend,
liquidation and voting rights, the value of the one one-thousandth interest in a
Preferred Share purchasable upon exercise of each Right should approximate the
value of one Common Share.

                  In the event that the Company is acquired in a merger or other
business combination transaction or 50% or more of its consolidated assets or
earning power are sold after a person or group has become an Acquiring Person,
proper provision will be made so that each holder of a Right will thereafter
have the right to receive, upon the exercise thereof at the then current
exercise price of the Right, that number of shares of common stock of the
acquiring company (or its parent) which at the time of such transaction will
have a market value of two times the exercise price of the Right. In the event
that any person or group of affiliated or associated persons becomes an
Acquiring Person, each holder of a Right, other than Rights beneficially owned
by the Acquiring Person (which will thereafter be void), will thereupon have the
right to receive upon exercise that number of Common Shares having a market
value of two times the exercise price of the Right.

                  At any time after any person or group becomes an Acquiring
Person and prior to the acquisition by such person or group of 50% or more of
the outstanding Common Shares, the Board of Directors of the Company may
exchange the Rights (other than Rights owned by such person or group which will
have become void), in whole or in part, for shares of Common Shares or Preferred
Shares (or a series of the Company's preferred stock having equivalent rights,
preferences and privileges), at an exchange ratio of one Common Share, or a
fractional Preferred Share (or other preferred stock) equivalent in value
thereto, per Right.

                  With certain exceptions, no adjustment in the Purchase Price
will be required until cumulative adjustments require an adjustment of at least
1% in such Purchase Price. No fractional Preferred Shares will be issued (other
than fractions which are integral multiples of ---one one-thousandth of a
Preferred Share, which may, at the election of the Company, be evidenced by
depositary receipts) and, in lieu thereof, an adjustment in cash will be made
based on
<PAGE>   79
                                                                               5

the market price of the Preferred Shares on the last trading day prior to the
date of exercise.

                  At any time prior to the time an Acquiring Person becomes such
the Board of Directors of the Company may redeem the Rights in whole, but not in
part, at a price of $.01 per Right (the "Redemption Price") payable, at the
option of the Company, in cash, Common Shares or such other form of
consideration as the Board of Directors of the Company shall determine. The
redemption of the Rights may be made effective at such time on such basis with
such conditions as the Board of Directors in its sole discretion may establish.
Immediately upon any redemption of the Rights, the right to exercise the Rights
will terminate and the only right of the holders of Rights will be to receive
the Redemption Price.

                  At any time prior to such time as there shall be an Acquiring
Person, the Company may, without the approval of any holder of the Rights,
supplement or amend any provision of the Rights Agreement (including the date on
which the Expiration Date or the Distribution Date shall occur, the amount of
the Purchase Price or the definition of "Acquiring Person"), except that no
supplement or amendment shall be made that reduces the Redemption Price of the
Rights. From and after such time as any person or group of affiliated or
associated persons becomes and Acquiring Person, and subject to applicable law,
the Company may, and the Rights Agent shall if the Company so directs, amend
this Rights Agreement without the approval of any holders of Rights (a) to cure
any ambiguity or to correct or supplement any provision contained herein which
may be defective or inconsistent with any other provision of this Rights
Agreement or (b) to otherwise change or supplement any other provisions in this
Agreement in any matter which the Company may deem necessary or desirable and
which in each such case shall not (i) adversely affect the interests of the
holders of Rights as such (other than an Acquiring Person or an Affiliate or
Associate of an Acquiring Person) (ii) cause the Rights Agreement again to
become otherwise amendable or (iii) cause the Rights again to become redeemable.

                  Until a Right is exercised or exchanged, the holder thereof,
as such, will have no rights as a
<PAGE>   80
                                                                               6

stockholder of the Company, including, without limitation, the right to vote or
to receive dividends.

                  A copy of the Rights Agreement has been filed with the
Securities and Exchange Commission as an Exhibit to a Registration Statement on
Form 10 (Registration No. 1-11639). A copy of the Rights Agreement is available
free of charge from the Company. This summary description of the Rights does not
purport to be complete and is qualified in its entirety by reference to the
Rights Agreement, as the same may be amended form time to time, which is hereby
incorporated herein by reference.

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