<PAGE>   1
                                                                   EXHIBIT 3(ii)



                                     BY-LAWS
                                       OF
                            LUCENT TECHNOLOGIES INC.
                        (AMENDED AS OF OCTOBER 24, 1999)
              INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

                                    ARTICLE I
                               OFFICES AND RECORDS

SECTION 1.1. DELAWARE OFFICE. The principal office of the Corporation in the
State of Delaware shall be located in the City of Wilmington, County of New
Castle, and the name and address of its registered agent is The Prentice Hall
Corporation System, Inc.

SECTION 1.2. OTHER OFFICES. The Corporation may have such other offices, either
within or without the State of Delaware, as the Board of Directors may designate
or as the business of the Corporation may from time to time require.

SECTION 1.3. BOOKS AND RECORDS. The books and records of the Corporation may be
kept outside the State of Delaware at such place or places as may from time to
time be designated by the Board of Directors.

                                   ARTICLE II
                                  STOCKHOLDERS

SECTION 2.1. ANNUAL MEETING. The annual meeting of the stockholders of the
Corporation shall be held on such date and at such time as may be fixed by
resolution of the Board of Directors.

SECTION 2.2. SPECIAL MEETING. Except as otherwise required by law and subject to
the rights of the holders of any class or series of stock having a preference
over the Common Stock as to dividends or upon liquidation, special meetings of
stockholders of the Corporation for any purpose or purposes may be called only
by (i) the Board of Directors pursuant to a resolution stating the purpose or
purposes thereof approved by a majority of the total number of Directors which
the Corporation would have if there were no vacancies (the "Whole Board"), or
(ii) by the Chairman of the Board of Directors of the Corporation. In addition,
prior to the Trigger Date (as defined in the Certificate of Incorporation), the
Corporation will call a special meeting of stockholders promptly upon request by
AT&T Corp., a New York corporation ("AT&T"), or any of its affiliates, in each
case, if such entity is a stockholder of the Corporation. No business other than
that stated in the notice shall be transacted at any special meeting.

                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99

<PAGE>   2

SECTION 2.3. PLACE OF MEETING. The Board of Directors or the Chairman of the
Board, as the case may be, may designate the place of meeting for any annual
meeting or for any special meeting of the stockholders. If no designation is so
made, the place of meeting shall be the principal office of the Corporation.

SECTION 2.4. NOTICE OF MEETING. Written or printed notice, stating the place,
day and hour of the meeting and the purpose or purposes for which the meeting is
called, shall be delivered by the Corporation not less than 10 calendar days nor
more than 60 calendar days before the date of the meeting, either personally or
by mail, to each stockholder of record entitled to vote at such meeting. If
mailed, such notice shall be deemed to be delivered when deposited in the United
States mail with postage thereon prepaid, addressed to the stockholder at such
person's address as it appears on the stock transfer books of the Corporation.
Such further notice shall be given as may be required by law. Only such business
shall be conducted at a special meeting of stockholders as shall have been
brought before the meeting pursuant to the Corporation's notice of meeting.
Meetings may be held without notice if all stockholders entitled to vote are
present, or if notice is waived by those not present in accordance with Section
6.4 of these By-Laws. Any previously scheduled meeting of the stockholders may
be postponed, and any special meeting of the stockholders may be canceled, by
resolution of the Board of Directors upon public notice given prior to the date
previously scheduled for such meeting of stockholders.

SECTION 2.5. QUORUM AND ADJOURNMENT; VOTING. Except as otherwise provided by law
or by the Certificate of Incorporation, the holders of a majority of the voting
power of all outstanding shares of the Corporation entitled to vote generally in
the election of directors (the "Voting Stock"), represented in person or by
proxy, shall constitute a quorum at a meeting of stockholders, except that when
specified business is to be voted on by a class or series of stock voting as a
class, the holders of a majority of the shares of such class or series shall
constitute a quorum of such class or series for the transaction of such
business. The Chairman of the meeting may adjourn the meeting from time to time,
whether or not there is such a quorum. No notice of the time and place of
adjourned meetings need be given except as required by law. The stockholders
present at a duly called meeting at which a quorum is present may continue to
transact business until adjournment, notwithstanding the withdrawal of enough
stockholders to leave less than a quorum.

SECTION 2.6. PROXIES. At all meetings of stockholders, a stockholder may vote by
proxy executed in writing (or in such manner prescribed by the General
Corporation Law of the State of Delaware (the "DGCL")) by the stockholder, or by
such person's duly authorized attorney in fact.


                                       2


                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99


<PAGE>   3


SECTION 2.7.  NOTICE OF STOCKHOLDER BUSINESS AND NOMINATIONS.

(A) Annual Meetings of Stockholders.

(1) Nominations of persons for election to the Board of Directors of the
Corporation and the proposal of business to be considered by the stockholders
may be made at an annual meeting of stockholders (a) pursuant to the
Corporation's notice of meeting pursuant to Section 2.4 of these By-Laws, (b) by
or at the direction of the Board of Directors, or (c) by any stockholder of the
Corporation who was a stockholder of record at the time of giving of notice
provided for in this By-Law, who is entitled to vote at the meeting and who
complies with the notice procedures set forth in this By-Law.

(2) For nominations or other business to be properly brought before an annual
meeting by a stockholder pursuant to clause (c) of paragraph (A)(1) of this
By-Law, the stockholder must have given timely notice thereof in writing to the
Secretary of the Corporation and such other business must otherwise be a proper
matter for stockholder action. To be timely, a stockholder's notice shall be
delivered to the Secretary at the principal executive offices of the Corporation
not later than the close of business on the 45th calendar day nor earlier than
the 75th calendar day prior to the first anniversary of the record date of
stockholders entitled to vote at the preceding year's annual meeting; provided,
however, that in the event that the record date is more than 30 calendar days
before or more than 60 calendar days after such anniversary date, notice by the
stockholder to be timely must be so delivered not earlier than the 75th calendar
day prior to such record date and not later than the close of business on the
later of the 45th calendar day prior to such record date or the 10th calendar
day following the calendar day on which public announcement of such record date
is first made by the Corporation. In no event shall the public announcement of
an adjournment of an annual meeting commence a new time period for the giving of
a stockholder's notice as described above. Such stockholder's notice shall set
forth (a) as to each person whom the stockholder proposes to nominate for
election or reelection as a director all information relating to such person
that is required to be disclosed in solicitations of proxies for election of
directors in an election contest, or is otherwise required, in each case
pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended
(the "Exchange Act") and Rule 14a-11 thereunder (including such person's written
consent to being named in the proxy statement as a nominee and to serving as a
director if elected); (b) as to any other business that the stockholder proposes
to bring before the meeting, a brief description of the business desired to be
brought before the meeting, the reasons for conducting such business at the
meeting and any material interest in such business of such stockholder and the
beneficial owner, if any, on whose behalf the proposal is made; and (c) as to
the stockholder giving the notice and the beneficial owner, if any, on whose
behalf the nomination or proposal is made (i) the name and address of such
stockholder, as they appear on the Corporation's books, and of such beneficial
owner and (ii) the class and number of shares of the Corporation which are owned
beneficially and of record by such stockholder and such beneficial owner.



                                       3


                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99

<PAGE>   4

(3) Notwithstanding anything in the second sentence of paragraph (A)(2) of this
By-Law to the contrary, in the event that the number of directors to be elected
to the Board of Directors of the Corporation is increased and there is no public
announcement by the Corporation naming all of the nominees for director or
specifying the size of the increased Board of Directors at least 55 calendar
days prior to the first anniversary of the record date for the preceding year's
annual meeting, a stockholder's notice required by this By-Law shall also be
considered timely, but only with respect to nominees for any new positions
created by such increase, if it shall be delivered to the Secretary at the
principal executive offices of the Corporation not later than the close of
business on the 10th calendar day following the day on which such public
announcement is first made by the Corporation.

(B) Special Meetings of Stockholders.

Only such business shall be conducted at a special meeting of stockholders as
shall have been brought before the meeting pursuant to the Corporation's notice
of meeting under Section 2.4 of these By-Laws. Nominations of persons for
election to the Board of Directors may be made at a special meeting of
stockholders at which directors are to be elected pursuant to the Corporation's
notice of meeting (a) by or at the direction of the Board of Directors, or (b)
provided that the Board of Directors has determined that directors shall be
elected at such meeting, by any stockholder of the Corporation who is a
stockholder of record at the time of giving of notice provided for in this
By-Law, who shall be entitled to vote at the meeting and who complies with the
notice procedures set forth in this By-Law. In the event the Corporation calls a
special meeting of stockholders for the purpose of electing one or more
directors to the Board of Directors, any stockholder may nominate a person or
persons (as the case may be), for election to such position(s) as specified in
the Corporation's notice of meeting pursuant to such clause (b), if the
stockholder shall have delivered written notice thereof containing the
information set forth in the notice specified in the last sentence of paragraph
(A) (2) of this By-Law to the Secretary at the principal executive offices of
the Corporation not earlier than the 120th calendar day prior to such special
meeting and not later than the close of business on the later of the 90th
calendar day prior to such special meeting or the 10th calendar day following
the date on which public announcement is first made of the date of the special
meeting and of the nominees proposed by the Board of Directors to be elected at
such meeting. In no event shall the public announcement of an adjournment of a
special meeting commence a new time period for the giving of a stockholder's
notice as described above.

(C) General.

(1) Only such persons who are nominated in accordance with the procedures set
forth in this By-Law shall be eligible to serve as directors and only such
business shall be conducted at a meeting of stockholders as shall have been
brought before the meeting in accordance with the procedures set forth in this
By-Law. Except as otherwise provided by law, the Certificate of Incorporation or
these By-Laws, the Chairman of the meeting


                                       4

                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99

<PAGE>   5

shall have the power and duty to determine whether a nomination or any business
proposed to be brought before the meeting was made or proposed, as the case may
be, in accordance with the procedures set forth in this By-Law and, if any
proposed nomination or business is not in compliance with this By-Law, to
declare that such defective proposal or nomination shall be disregarded.

(2) For purposes of this By-Law, "public announcement" shall mean disclosure in
a press release reported by the Dow Jones News Service, Associated Press or
comparable national news service or in a document publicly filed by the
Corporation with the Securities and Exchange Commission pursuant to Section 13,
14 or 15(d) of the Exchange Act.

(3) Notwithstanding the foregoing provisions of this By-Law, a stockholder shall
also comply with all applicable requirements of the Exchange Act and the rules
and regulations thereunder with respect to the matters set forth in this By-Law.
Nothing in this By-Law shall be deemed to affect any rights (i) of stockholders
to request inclusion of proposals in the Corporation's proxy statement pursuant
to Rule 14a-8 under the Exchange Act or (ii) of the holders of any series of
Preferred Stock to elect directors under an applicable Preferred Stock
Designation (as defined in the Corporation's Certificate of Incorporation).

SECTION 2.8. PROCEDURE FOR ELECTION OF DIRECTORS; REQUIRED VOTE. Election of
directors at all meetings of the stockholders at which directors are to be
elected shall be by ballot, and, subject to the rights of the holders of any
series of Preferred Stock to elect directors under an applicable Preferred Stock
Designation, a plurality of the votes cast thereat shall elect directors. Except
as otherwise provided by law, the Certificate of Incorporation, Preferred Stock
Designation, or these By-Laws, in all matters other than the election of
directors, the affirmative vote of a majority of the voting power of the shares
present in person or represented by proxy at the meeting and entitled to vote on
the matter shall be the act of the stockholders.

SECTION 2.9. INSPECTORS OF ELECTIONS; OPENING AND CLOSING THE POLLS. The Board
of Directors by resolution shall appoint, or shall authorize an officer of the
Corporation to appoint, one or more inspectors, which inspector or inspectors
may include individuals who serve the Corporation in other capacities,
including, without limitation, as officers, employees, agents or
representatives, to act at the meetings of stockholders and make a written
report thereof. One or more persons may be designated as alternate inspector(s)
to replace any inspector who fails to act. If no inspector or alternate has been
appointed to act or is able to act at a meeting of stockholders, the Chairman of
the meeting shall appoint one or more inspectors to act at the meeting. Each
inspector, before discharging such person's duties, shall take and sign an oath
faithfully to execute the duties of inspector with strict impartiality and
according to the best of such person's ability. The inspector(s) shall have the
duties prescribed by law. The Chairman of the meeting shall



                                       5


                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99
<PAGE>   6

fix and announce at the meeting the date and time of the opening and the closing
of the polls for each matter upon which the stockholders will vote at a meeting.

SECTION 2.10. NO STOCKHOLDER ACTION BY WRITTEN CONSENT. Effective as of the
Trigger Date, any action required or permitted to be taken by the stockholders
of the Corporation must be effected at a duly called annual or special meeting
of such holders and may not be effected by any consent in writing by such
holders.

                                   ARTICLE III
                               BOARD OF DIRECTORS

SECTION 3.1. GENERAL POWERS. The business and affairs of the Corporation shall
be managed under the direction of the Board of Directors. In addition to the
powers and authorities by these By-Laws expressly conferred upon them, the Board
of Directors may exercise all such powers of the Corporation and do all such
lawful acts and things as are not by statute or by the Certificate of
Incorporation or by these By-Laws required to be exercised or done by the
stockholders.

SECTION 3.2. NUMBER AND TENURE. Except as otherwise fixed by or pursuant to the
provisions of Article IV of the Certificate of Incorporation relating to the
rights of the holders of any class or series of stock having a preference over
the Common Stock as to dividends or upon liquidation to elect additional
directors under specified circumstances, the number of the Directors of the
Corporation shall be fixed from time to time exclusively pursuant to a
resolution adopted by a majority of the Whole Board (but shall not be less than
three). The Directors, other than those who may be elected by the holders of any
class or series of stock having a preference over the Common Stock as to
dividends or upon liquidation, shall be classified, with respect to the time for
which they severally hold office, into three classes, as nearly equal in number
as possible, one class to be originally elected for a term expiring at the
annual meeting of stockholders to be held in 1997, another class to be
originally elected for a term expiring at the annual meeting of stockholders to
be held in 1998, and another class to be originally elected for a term expiring
at the annual meeting of stockholders to be held in 1999, with each class to
hold office until its successor is duly elected and qualified. At each
succeeding annual meeting of stockholders, directors elected to succeed those
directors whose terms then expire shall be elected for a term of office to
expire at the third succeeding annual meeting of stockholders after their
election, with each director to hold office until such person's successor shall
have been duly elected and qualified.

SECTION 3.3. REGULAR MEETINGS. A regular meeting of the Board of Directors shall
be held without other notice than this By-Law immediately after, and at the same
place as, the annual meeting of stockholders. The Board of Directors may, by
resolution, provide



                                       6


                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99

<PAGE>   7

the time and place for the holding of additional regular meetings without other
notice than such resolution.

SECTION 3.4. SPECIAL MEETINGS. Special meetings of the Board of Directors shall
be called at the request of the Chairman of the Board, the President or a
majority of the Board of Directors then in office. The person or persons
authorized to call special meetings of the Board of Directors may fix the place
and time of the meetings.

SECTION 3.5. NOTICE. Notice of any special meeting of directors shall be given
to each director at such person's business or residence in writing by hand
delivery, first-class or overnight mail or courier service, telegram or
facsimile transmission, or orally by telephone. If mailed by first-class mail,
such notice shall be deemed adequately delivered when deposited in the United
States mails so addressed, with postage thereon prepaid, at least 5 calendar
days before such meeting. If by telegram, overnight mail or courier service,
such notice shall be deemed adequately delivered when the telegram is delivered
to the telegraph company or the notice is delivered to the overnight mail or
courier service company at least 24 hours before such meeting. If by facsimile
transmission, such notice shall be deemed adequately delivered when the notice
is transmitted at least 12 hours before such meeting. If by telephone or by hand
delivery, the notice shall be given at least 12 hours prior to the time set for
the meeting. Neither the business to be transacted at, nor the purpose of, any
regular or special meeting of the Board of Directors need be specified in the
notice of such meeting, except for amendments to these By-Laws, as provided
under Section 8.1. A meeting may be held at any time without notice if all the
directors are present or if those not present waive notice of the meeting either
before or after such meeting.

SECTION 3.6. ACTION BY CONSENT OF BOARD OF DIRECTORS. Any action required or
permitted to be taken at any meeting of the Board of Directors or of any
committee thereof may be taken without a meeting if all members of the Board or
committee, as the case may be, consent thereto in writing, and the writing or
writings are filed with the minutes of proceedings of the Board or committee.

SECTION 3.7. CONFERENCE TELEPHONE MEETINGS. Members of the Board of Directors or
any committee thereof may participate in a meeting of the Board of Directors or
such committee by means of conference telephone or similar communications
equipment by means of which all persons participating in the meeting can hear
each other, and such participation in a meeting shall constitute presence in
person at such meeting.

SECTION 3.8. QUORUM. Subject to Section 3.9, a whole number of directors equal
to at least a majority of the Whole Board shall constitute a quorum for the
transaction of business, but if at any meeting of the Board of Directors there
shall be less than a quorum



                                       7

                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99

<PAGE>   8

present, a majority of the directors present may adjourn the meeting from time
to time without further notice. The act of the majority of the directors present
at a meeting at which a quorum is present shall be the act of the Board of
Directors. The directors present at a duly organized meeting may continue to
transact business until adjournment, notwithstanding the withdrawal of enough
directors to leave less than a quorum.

SECTION 3.9. VACANCIES. Except as otherwise provided for or fixed by or pursuant
to the provisions of Article IV of the Certificate of Incorporation relating to
the rights of the holders of any class or series of stock having a preference
over the Common Stock as to dividends or upon liquidation to elect directors
under specified circumstances, newly created directorships resulting from any
increase in the number of Directors and any vacancies on the Board of Directors
resulting from death, resignation, disqualification, removal or other cause
shall be filled by the affirmative vote of a majority of the remaining Directors
then in office, even though less than a quorum of the Board of Directors. A
Director elected in accordance with the preceding sentence shall hold office
until the next succeeding annual meeting of stockholders following his election
by the Directors, and if elected by the stockholders at such meeting, shall
serve for the remainder of the full term of the class of Directors in which the
new directorship was created or the vacancy occurred and until such Director's
successor shall have been duly elected and qualified. No decrease in the number
of Directors constituting the Board of Directors shall shorten the term of any
incumbent Director.

SECTION 3.10. EXECUTIVE AND OTHER COMMITTEES. (a) The Board of Directors may, by
resolution adopted by a majority of the Whole Board, designate an Executive
Committee to exercise, subject to applicable provisions of law, all the powers
of the Board in the management of the business and affairs of the Corporation
when the Board is not in session, including without limitation the power to
declare dividends, to authorize the issuance of the Corporation's capital stock
and to adopt a certificate of ownership and merger pursuant to Section 253 of
the General Corporation Law of the State of Delaware, and may, by resolution
similarly adopted, designate one or more other committees. The Executive
Committee and each such other committee shall consist of one or more directors
of the Corporation. The Board may designate one or more directors as alternate
members of any committee, who may replace any absent or disqualified member at
any meeting of the committee. Any such committee, other than the Executive
Committee (the powers of which are expressly provided for herein), may to the
extent permitted by law exercise such powers and shall have such
responsibilities as shall be specified in the designating resolution. In the
absence or disqualification of any member of such committee or committees, the
member or members thereof present at any meeting and not disqualified from
voting, whether or not constituting a quorum, may unanimously appoint another
member of the Board to act at the meeting in the place of any such absent or


                                       8


                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99

<PAGE>   9

disqualified member. Each committee shall keep written minutes of its
proceedings and shall report such proceedings to the Board when required.

(b) A majority of any committee may determine its action and fix the time and
place of its meetings, unless the Board shall otherwise provide. Notice of such
meetings shall be given to each member of the committee in the manner provided
for in Section 3.5 of these By-Laws. The Board shall have power at any time to
fill vacancies in, to change the membership of, or to dissolve any such
committee. Nothing herein shall be deemed to prevent the Board from appointing
one or more committees consisting in whole or in part of persons who are not
directors of the Corporation; provided, however, that no such committee shall
have or may exercise any authority of the Board.

SECTION 3.11. REMOVAL. Subject to the rights of any class or series of stock
having a preference over the Common Stock as to dividends or upon liquidation to
elect Directors under specified circumstances, any Director may be removed from
office only for cause by the affirmative vote of the holders of at least a
majority of the voting power of all Voting Stock then outstanding, voting
together as a single class.

SECTION 3.12. RECORDS. The Board of Directors shall cause to be kept a record
containing the minutes of the proceedings of the meetings of the Board and of
the stockholders, appropriate stock books and registers and such books of
records and accounts as may be necessary for the proper conduct of the business
of the Corporation.

                                   ARTICLE IV
                                    OFFICERS

SECTION 4.1. ELECTED OFFICERS. The elected officers of the Corporation shall be
a Chairman of the Board of Directors, a President, a Secretary, a Treasurer, and
such other officers (including, without limitation, Senior Vice Presidents and
Executive Vice Presidents and Vice Presidents) as the Board of Directors from
time to time may deem proper. The Chairman of the Board shall be chosen from
among the directors. All officers elected by the Board of Directors shall each
have such powers and duties as generally pertain to their respective offices,
subject to the specific provisions of this Article IV. Such officers shall also
have such powers and duties as from time to time may be conferred by the Board
of Directors or by any committee thereof. The Board or any committee thereof may
from time to time elect, or the Chairman of the Board or President may appoint,
such other officers (including one or more Vice Presidents, Controllers,
Assistant Secretaries and Assistant Treasurers), as may be necessary or
desirable for the conduct of the business of the Corporation. Such other
officers and agents shall have such duties and shall hold their offices for such
terms as shall be



                                       9

                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99

<PAGE>   10

provided in these By-Laws or as may be prescribed by the Board or such committee
or by the Chairman of the Board or President, as the case may be.

SECTION 4.2. ELECTION AND TERM OF OFFICE. The elected officers of the
Corporation shall be elected annually by the Board of Directors at the regular
meeting of the Board of Directors held after the annual meeting of the
stockholders. If the election of officers shall not be held at such meeting,
such election shall be held as soon thereafter as convenient. Each officer shall
hold office until such person's successor shall have been duly elected and shall
have qualified or until such person's death or until he shall resign or be
removed pursuant to Section 4.8.

SECTION 4.3. CHAIRMAN OF THE BOARD; CHIEF EXECUTIVE OFFICER. The Chairman of the
Board shall preside at all meetings of the stockholders and of the Board of
Directors and shall be the Chief Executive Officer of the Corporation. The
Chairman of the Board shall be responsible for the general management of the
affairs of the Corporation and shall perform all duties incidental to such
person's office which may be required by law and all such other duties as are
properly required of him by the Board of Directors. He shall make reports to the
Board of Directors and the stockholders, and shall see that all orders and
resolutions of the Board of Directors and of any committee thereof are carried
into effect. The Chairman of the Board may also serve as President, if so
elected by the Board. The Directors also may elect a Vice-Chairman to act in the
place of the Chairman upon his or her absence or inability to act.

SECTION 4.4. PRESIDENT. The President shall act in a general executive capacity
and shall assist the Chairman of the Board in the administration and operation
of the Corporation's business and general supervision of its policies and
affairs. The President, if he or she is also a Director, shall, in the absence
of or because of the inability to act of the Chairman of the Board, perform all
duties of the Chairman of the Board and preside at all meetings of stockholders
and of the Board of Directors.

SECTION 4.5. VICE PRESIDENTS. Each Senior Vice President and Executive Vice
President and any Vice President shall have such powers and shall perform such
duties as shall be assigned to him by the Board of Directors.

SECTION 4.6. TREASURER. The Treasurer shall exercise general supervision over
the receipt, custody and disbursement of corporate funds. The Treasurer shall
cause the funds of the Corporation to be deposited in such banks as may be
authorized by the Board of Directors, or in such banks as may be designated as
depositories in the manner provided by resolution of the Board of Directors. The
Treasurer shall have such further powers and duties and shall be subject to such
directions as may be granted or imposed from time to time by the Board of
Directors, the Chairman of the Board or the President.



                                       10

                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99

<PAGE>   11

SECTION 4.7. SECRETARY. (a) The Secretary shall keep or cause to be kept in one
or more books provided for that purpose, the minutes of all meetings of the
Board, the committees of the Board and the stockholders; the Secretary shall see
that all notices are duly given in accordance with the provisions of these
By-Laws and as required by law; shall be custodian of the records and the seal
of the Corporation and affix and attest the seal to all stock certificates of
the Corporation (unless the seal of the Corporation on such certificates shall
be a facsimile, as hereinafter provided) and affix and attest the seal to all
other documents to be executed on behalf of the Corporation under its seal; and
shall see that the books, reports, statements, certificates and other documents
and records required by law to be kept and filed are properly kept and filed;
and in general, shall perform all the duties incident to the office of Secretary
and such other duties as from time to time may be assigned to the Secretary by
the Board, the Chairman of the Board or the President.

(b) Assistant Secretaries shall have such of the authority and perform such of
the duties of the Secretary as may be provided in these By-Laws or assigned to
them by the Board of Directors or the Chairman of the Board or by the Secretary.
During the Secretary's absence or inability, the Secretary's authority and
duties shall be possessed by such Assistant Secretary or Assistant Secretaries
as the Board of Directors, the Chairman of the Board, the President or a Vice
Chairman of the Board may designate.

SECTION 4.8. REMOVAL. Any officer elected, or agent appointed, by the Board of
Directors may be removed by the affirmative vote of a majority of the Whole
Board whenever, in their judgment, the best interests of the Corporation would
be served thereby. Any officer or agent appointed by the Chairman of the Board
or the President may be removed by him whenever, in such person's judgment, the
best interests of the Corporation would be served thereby. No elected officer
shall have any contractual rights against the Corporation for compensation by
virtue of such election beyond the date of the election of such person's
successor, such person's death, such person's resignation or such person's
removal, whichever event shall first occur, except as otherwise provided in an
employment contract or under an employee deferred compensation plan.

SECTION 4.9. VACANCIES. A newly created elected office and a vacancy in any
elected office because of death, resignation, or removal may be filled by the
Board of Directors for the unexpired portion of the term at any meeting of the
Board of Directors. Any vacancy in an office appointed by the Chairman of the
Board or the President because of death, resignation, or removal may be filled
by the Chairman of the Board or the President.

                                    ARTICLE V


                                       11

                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99


<PAGE>   12


                        STOCK CERTIFICATES AND TRANSFERS

SECTION 5.1. STOCK CERTIFICATES AND TRANSFERS. The interest of each stockholder
of the Corporation shall be evidenced by certificates for shares of stock in
such form as the appropriate officers of the Corporation may from time to time
prescribe. The shares of the stock of the Corporation shall be transferred on
the books of the Corporation by the holder thereof in person or by such person's
attorney, upon surrender for cancellation of certificates for at least the same
number of shares, with an assignment and power of transfer endorsed thereon or
attached thereto, duly executed, with such proof of the authenticity of the
signature as the Corporation or its agents may reasonably require. The
certificates of stock shall be signed, countersigned and registered in such
manner as the Board of Directors may by resolution prescribe, which resolution
may permit all or any of the signatures on such certificates to be in facsimile.
In case any officer, transfer agent or registrar who has signed or whose
facsimile signature has been placed upon a certificate has ceased to be such
officer, transfer agent or registrar before such certificate is issued, it may
be issued by the Corporation with the same effect as if he were such officer,
transfer agent or registrar at the date of issue. Notwithstanding the foregoing
provisions regarding share certificates, the proper officers of the Corporation
may provide that some or all of any or all classes or series of the
Corporation's common or any preferred shares may be uncertificated shares.

SECTION 5.2. LOST, STOLEN OR DESTROYED CERTIFICATES. No certificate for shares
of stock in the Corporation shall be issued in place of any certificate alleged
to have been lost, destroyed or stolen, except on production of such evidence of
such loss, destruction or theft and on delivery to the Corporation of a bond of
indemnity in such amount, upon such terms and secured by such surety, as the
Board of Directors or any financial officer may in its or such person's
discretion require.

                                   ARTICLE VI
                            MISCELLANEOUS PROVISIONS

SECTION 6.1. FISCAL YEAR. The fiscal year of the Corporation shall begin on the
first day of October and end on the last day of September of each year.

SECTION 6.2. DIVIDENDS. The Board of Directors may from time to time declare,
and the Corporation may pay, dividends on its outstanding shares in the manner
and upon the terms and conditions provided by law and the Certificate of
Incorporation.

SECTION 6.3. SEAL. The corporate seal shall have inscribed thereon the words
"Corporate Seal," the year of incorporation and the word "Delaware."




                                       12

                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99


<PAGE>   13

SECTION 6.4. WAIVER OF NOTICE. Whenever any notice is required to be given to
any stockholder or director of the Corporation under the provisions of the DGCL
or these By-Laws, a waiver thereof in writing, signed by the person or persons
entitled to such notice, whether before or after the time stated therein, shall
be deemed equivalent to the giving of such notice. Neither the business to be
transacted at, nor the purpose of, any annual or special meeting of the
stockholders or the Board of Directors or committee thereof need be specified in
any waiver of notice of such meeting.

SECTION 6.5. AUDITS. The accounts, books and records of the Corporation shall be
audited upon the conclusion of each fiscal year by an independent certified
public accountant selected by the Board of Directors, and it shall be the duty
of the Board of Directors to cause such audit to be done annually.

SECTION 6.6. RESIGNATIONS. Any director or any officer, whether elected or
appointed, may resign at any time by giving written notice of such resignation
to the Chairman of the Board, the President, or the Secretary, and such
resignation shall be deemed to be effective as of the close of business on the
date said notice is received by the Chairman of the Board, the President, or the
Secretary, or at such later time as is specified therein. No formal action shall
be required of the Board of Directors or the stockholders to make any such
resignation effective.

                                   ARTICLE VII
                            CONTRACTS, PROXIES, ETC.

SECTION 7.1. CONTRACTS. Except as otherwise required by law, the Certificate of
Incorporation, a Preferred Stock Designation, or these By-Laws, any contracts or
other instruments may be executed and delivered in the name and on the behalf of
the Corporation by such officer or officers of the Corporation as the Board of
Directors may from time to time direct. Such authority may be general or
confined to specific instances as the Board may determine. The Chairman of the
Board, the President or any Senior Vice President, Executive Vice President or
Vice President may execute bonds, contracts, deeds, leases and other instruments
to be made or executed for or on behalf of the Corporation. Subject to any
restrictions imposed by the Board of Directors or the Chairman of the Board, the
President or any Senior Vice President, Executive Vice President or Vice
President of the Corporation may delegate contractual powers to others under
such person's jurisdiction, it being understood, however, that any such
delegation of power shall not relieve such officer of responsibility with
respect to the exercise of such delegated power.



                                       13

                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99

<PAGE>   14

SECTION 7.2. PROXIES. Unless otherwise provided by resolution adopted by the
Board of Directors, the Chairman of the Board, the President or any Senior Vice
President, Executive Vice President or Vice President may from time to time
appoint an attorney or attorneys or agent or agents of the Corporation, in the
name and on behalf of the Corporation, to cast the votes which the Corporation
may be entitled to cast as the holder of stock or other securities in any other
corporation, any of whose stock or other securities may be held by the
Corporation, at meetings of the holders of the stock or other securities of such
other corporation, or to consent in writing, in the name of the Corporation as
such holder, to any action by such other corporation, and may instruct the
person or persons so appointed as to the manner of casting such votes or giving
such consent, and may execute or cause to be executed in the name and on behalf
of the Corporation and under its corporate seal or otherwise, all such written
proxies or other instruments as he may deem necessary or proper in the premises.

                                  ARTICLE VIII
                                   AMENDMENTS

SECTION 8.1. AMENDMENTS. The By-Laws may be altered or repealed and new By-Laws
may be adopted (1) at any annual or special meeting of stockholders by the
affirmative vote of the holders of a majority of the voting power of the stock
issued and outstanding and entitled to vote thereat, provided, however, that any
proposed alteration or repeal of, or the adoption of any By-Law inconsistent
with, Section 2.2, 2.7 or 2.10 of Article II or Section 3.2, 3.9 or 3.11 of
Article III of the By-Laws by the stockholders shall require the affirmative
vote of the holders of at least 80% of the voting power of all Voting Stock then
outstanding, voting together as a single class, and provided, further, however,
that, in the case of any such stockholder action at a special meeting of
stockholders, notice of the proposed alteration, repeal or adoption of the new
By-Law or By-Laws must be contained in the notice of such special meeting, or
(2) by the affirmative vote of a majority of the Whole Board.

         I HEREBY CERTIFY that the foregoing is a full, true, and correct copy
of the By-Laws of Lucent Technologies Inc., a Delaware corporation, as in effect
on the date hereof.

Effective as of October 24, 1999

                                         ---------------------------------------
                                         Pamela F. Craven
                                         Secretary of Lucent Technologies Inc.




                                       14

                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99

<PAGE>   15

[Seal]




                                       15

                                                                  Adopted 4/1/96
                                                                 Ratified 4/3/96
                                                                 Amended 7/17/96
                                                           Amended as of 2/17/99
                                                          Amended as of 10/24/99