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                                                                     EXHIBIT 3.4


                          AMENDED AND RESTATED BYLAWS
                                      OF
                           CHORUM TECHNOLOGIES INC.

                                   ARTICLE 1
                                    OFFICES

     1.1  The registered office shall be in the City of Dover, County of Kent,
State of Delaware.

     1.2  The corporation may also have offices at such other places both within
and without the State of Delaware as the Board of Directors may from time to
time determine or the business of the corporation may require.


                                   ARTICLE 2
                           MEETINGS OF STOCKHOLDERS

     2.1  All meetings of the stockholders for the election of directors shall
be held at such place as may be fixed from time to time by the Board of
Directors, or at such other place either within or without the State of Delaware
as shall be designated from time to time by the Board of Directors and stated in
the notice of the meeting. Meetings of stockholders for any other purpose may be
held at such time and place, within or without the State of Delaware, as shall
be stated in the notice of the meeting or in a duly executed waiver of notice
thereof.

     2.2  (a)  Annual meetings of stockholders, commencing with the year 2001,
shall be held at such date and time as shall be designated from time to time by
the Board of Directors and stated in the notice of the meeting, at which they
shall elect by a plurality vote a Board of Directors, and transact such other
business as may properly be brought before the meeting.

          (b)  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 (i) pursuant to
the Corporation's notice of meeting, (ii) by or at the direction of the Board of
Directors or (iii) by any stockholder of the Corporation who was a stockholder
of record at the time of giving of the notice provided for in this bylaw, who is
entitled to vote at the meeting and who complied with the notice procedures set
forth in this bylaw.

          (c)  For nominations or other business to be properly brought before
an annual meeting by a stockholder pursuant to clause (iii) of Section 2.2(b) of
this bylaw, the stockholder must have given timely notice thereof in writing to
the Secretary of the Corporation and any such business must otherwise be a
proper matter for stockholder action under Delaware law. To be timely, a
stockholder's notice shall be delivered to the Secretary at the principal
executive offices of the Corporation not less than 60 days nor more than 90 days
prior to the first anniversary of the preceding year's annual meeting; provided,
however, that in the event that the date of the annual meeting is advanced by
more than 30 days or delayed by more than 60 days from such anniversary date,
notice by the stockholder to be timely must be so delivered not earlier than the
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90th day prior to such annual meeting and not later than the close of business
on the later of the 60th day prior to such annual meeting or the 10th day
following the day on which public announcement of the date of such meeting is
first made. Such stockholder's notice shall set forth (i) 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, or is otherwise required, in
each case pursuant to Regulation 14A under the Securities Exchange Act of 1934,
as amended (the "Exchange Act") (including such person's written consent to
being named in the proxy statement as a nominee and to serving as a director if
elected); (ii) 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 (iii) as to the
stockholder giving the notice and the beneficial owner, if any, on whose behalf
the nomination or proposal is made (a) the name and address of such stockholder,
as they appear on the Corporation's books, and of such beneficial owner and (b)
the class and number of shares of the Corporation which are owned beneficially
and of record by such stockholder and such beneficial owner.

          (d)  Notwithstanding anything in the second sentence of Section 2.2(c)
of this bylaw 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 naming all of the nominees for director or specifying the
size of the increased Board of Directors made by the Corporation at least 70
days prior to the first anniversary of the preceding year's annual meeting, a
stockholder's notice required by this bylaw 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 day following the
day on which such public announcement is first made by the Corporation.

          (e)  Only such persons who are nominated in accordance with the
procedures set forth in these Bylaws shall be eligible to serve as directors and
only such business shall be conducted at an annual meeting of stockholders as
shall have been brought before the meeting in accordance with the procedures set
forth in these Bylaws. The chairman of the meeting shall have the power and duty
to determine whether a nomination or any business proposed to be brought before
the meeting was made in accordance with the procedures set forth in these
Bylaws. The chairman of the meeting shall have the power and duty to determine
whether a nomination or any business proposed to be brought before the meeting
was made in accordance with the procedures set forth in these Bylaws, and, if
any proposed nomination or business is not in compliance with these Bylaws, to
declare that such defective proposed business or nomination shall be
disregarded.

          (f)  For purposes of these Bylaws, "public announcement" shall mean
disclosure in a press release reported by the Dow Jones News Service, Associated
Press or a 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.

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          (g)  Notwithstanding the foregoing provisions of this bylaw, 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 bylaw. Nothing in this bylaw shall be deemed to affect any rights
of stockholders to request inclusion of proposals in the Corporation's proxy
statement pursuant to Rule 14a-8 under the Exchange Act.

     2.3  Written notice of the annual meeting stating the place, date and hour
of the meeting shall be given to each stockholder entitled to vote at such
meeting not fewer than ten (10) nor more than sixty (60) days before the date of
the meeting.

     2.4  The officer who has charge of the stock ledger of the corporation
shall prepare and make, at least ten (10) days before every meeting of
stockholders, a complete list of the stockholders entitled to vote at the
meeting, arranged in alphabetical order, and showing the address of each
stockholder and the number of shares registered in the name of each stockholder.
Such list shall be open to the examination of any stockholder, for any purpose
germane to the meeting, during ordinary business hours, for a period of at least
ten (10) days prior to the meeting, either at a place within the city where the
meeting is to be held, which place shall be specified in the notice of the
meeting, or, if not so specified, at the place where the meeting is to be held.
The list shall also be produced and kept at the time and place of the meeting
during the whole time thereof, and may be inspected by any stockholder who is
present.

     2.5  Special meetings of the stockholders, for any purpose or purposes,
unless otherwise prescribed by statute or by the certificate of incorporation,
may be called at any time by the Board of Directors pursuant to a resolution
approved by a majority of the whole Board of Directors. Such resolution shall
state the purpose or purposes of the proposed meeting.

     2.6  Written notice of a special meeting stating the place, date and hour
of the meeting and the purpose or purposes for which the meeting is called,
shall be given not fewer than ten (10) nor more than sixty (60) days before the
date of the meeting, to each stockholder entitled to vote at such meeting.

     2.7  Business transacted at any special meeting of stockholders shall be
limited to the purposes stated in the notice.

     2.8  The holders of a majority of the stock issued and outstanding and
entitled to vote thereat, present in person or represented by proxy, shall
constitute a quorum at all meetings of the stockholders for the transaction of
business except as otherwise provided by statute or by the certificate of
incorporation. If, however, such quorum shall not be present or represented at
any meeting of the stockholders, the stockholders entitled to vote thereat,
present in person or represented by proxy, shall have power to adjourn the
meeting from time to time, without notice other than announcement at the
meeting, until a quorum shall be present or represented. At such adjourned
meeting at which a quorum shall be present or represented, any business may be
transacted that might have been transacted at the meeting as originally
notified. If the adjournment is for more than thirty (30) days, or if after the
adjournment a new record date is fixed for the adjourned meeting, a notice of
the adjourned meeting shall be given to each stockholder of record entitled to
vote at the meeting.

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     2.9  When a quorum is present at any meeting, the vote of the holders of a
majority of the stock having voting power present in person or represented by
proxy shall decide any question brought before such meeting, unless the question
is one upon which by express provision of the statutes or of the certificate of
incorporation, a different vote is required, in which case such express
provision shall govern and control the decision of such question.

     2.10 Unless otherwise provided in the certificate of incorporation, each
stockholder shall at every meeting of the stockholders be entitled to one vote
in person or by proxy for each share of the capital stock having voting power
held by such stockholder, but no proxy shall be voted on after three years from
its date, unless the proxy provides for a longer period.

                                   ARTICLE 3
                                   DIRECTORS

     3.1  The number of directors shall be fixed from time to time exclusively
by the Board of Directors pursuant to a resolution adopted by a vote of 75% of
the total number of authorized directors (whether or not there exist any
vacancies in previously authorized directorships at the time any such resolution
is presented to the Board for adoption). Directors shall be divided into three
classes, as nearly equal in number as reasonably possible, with the term of
office of the first class to expire at the 2002 annual meeting of stockholders,
the term of office of the second class to expire at the 2003 annual meeting of
stockholders and the term of office of the third class to expire at the 2004
annual meeting of stockholders. At each annual meeting of stockholders following
such initial classification and election, directors elected to succeed those
directors whose terms expire shall be elected for a term of office to expire at
the third succeeding annual meeting of stockholders after their election. All
directors shall hold office until the expiration of term for which elected, and
until their respective successors are elected and qualified, except in the case
of the death, resignation or removal of any director. Directors need not be
stockholders.

     3.2  Vacancies and newly created directorships resulting from any increase
in the authorized number of directors may be filled by a majority of the
directors then in office, though less than a quorum, or by a sole remaining
director, and not by stockholders, and the directors so chosen shall hold office
until the next annual election and until their successors are duly elected and
shall qualify, unless sooner displaced. If there are no directors in office,
then an election of directors may be held in the manner provided by statute.

     3.3  The business of the corporation shall be managed by or under the
direction of its Board of Directors, which 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 bylaws directed or required to be
exercised or done by the stockholders.

                      MEETINGS OF THE BOARD OF DIRECTORS

     3.4  The Board of Directors of the corporation may hold meetings, both
regular and special, either within or without the State of Delaware.

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     3.5  The first meeting of each newly elected Board of Directors shall be
held at such time and place as shall be fixed by the vote of the stockholders at
the annual meeting and no notice of such meeting shall be necessary to the newly
elected directors in order legally to constitute the meeting, provided a quorum
shall be present. In the event of the failure of the stockholders to fix the
time or place of such first meeting of the newly elected Board of Directors, or
in the event such meeting is not held at the time and place so fixed by the
stockholders, the meeting may be held at such time and place as shall be
specified in a notice given as hereinafter provided for special meetings of the
Board of Directors, or as shall be specified in a written waiver signed by all
of the directors.

     3.6  Regular meetings of the Board of Directors may be held without notice
at such time and at such place as shall from time to time be determined by the
Board of Directors.

     3.7  Special meetings of the Board of Directors may be called by the chief
executive officer, president, or chief operating officer on ten (10) days'
notice to each director by mail or forty-eight (48) hours notice to each
director either personally or by telephone, telegram or facsimile; special
meetings shall be called by the chief executive officer, president, chief
operating officer or secretary in like manner and on like notice on the written
request of two (2) directors unless the board consists of only one director, in
which case special meetings shall be called by the chief executive officer,
president, chief operating officer, or secretary in like manner and on like
notice on the written request of the sole director.

     3.8  At all meetings of the Board of Directors a majority of the directors
shall constitute a quorum for the transaction of business and the act of a
majority of the directors present at any meeting at which there is a quorum
shall be the act of the Board of Directors, except as may be otherwise
specifically provided by statute or by the certificate of incorporation. If a
quorum shall not be present at any meeting of the Board of Directors, the
directors present thereat may adjourn the meeting from time to time, without
notice other than announcement at the meeting, until a quorum shall be present.

     3.9  Unless otherwise restricted by the certificate of incorporation or
these bylaws, 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 of Directors 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 of Directors or committee.

     3.10 Unless otherwise restricted by the certificate of incorporation or
these bylaws, members of the Board of Directors, or any committee designated by
the Board of Directors, may participate in a meeting of the Board of Directors,
or any 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 the meeting.

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                            COMMITTEES OF DIRECTORS

     3.11  The Board of Directors may, by resolution passed by a majority of the
whole board, designate one (1) or more committees, each committee to consist of
one (1) or more of the directors of the corporation. The board may designate one
(1) or more directors as alternate members of any committee, who may replace any
absent or disqualified member at any meeting of the committee.

           In the absence or disqualification of a member of a committee, the
member or members thereof present at any meeting and not disqualified from
voting, whether or not he or she or they constitute a quorum, may unanimously
appoint another member of the Board of Directors to act at the meeting in the
place of any such absent or disqualified member.

           Any such committee, to the extent provided in the resolution of the
Board of Directors, shall have and may exercise all the powers and authority of
the Board of Directors in the management of the business and affairs of the
corporation, and may authorize the seal of the corporation to be affixed to all
papers that may require it; but no such committee shall have the power or
authority in reference to amending the certificate of incorporation, adopting an
agreement of merger or consolidation, recommending to the stockholders the sale,
lease or exchange of all or substantially all of the corporation's property and
assets, recommending to the stockholders a dissolution of the corporation or a
revocation of a dissolution, or amending the bylaws of the corporation; and,
unless the resolution or the certificate of incorporation expressly so provide,
no such committee shall have the power or authority to declare a dividend or to
authorize the issuance of stock. Such committee or committees shall have such
name or names as may be determined from time to time by resolution adopted by
the Board of Directors.

     3.12  Each committee shall keep regular minutes of its meetings and report
the same to the Board of Directors when required.

                           COMPENSATION OF DIRECTORS

     3.13  Unless otherwise restricted by the certificate of incorporation or
these bylaws, the Board of Directors shall have the authority to fix the
compensation of directors. The directors may be paid their expenses, if any, of
attendance at each meeting of the Board of Directors and may be paid a fixed sum
for attendance at each meeting of the Board of Directors or a stated salary as
director. No such payment shall preclude any director from serving the
corporation in any other capacity and receiving compensation therefor. Members
of special or standing committees may be allowed like compensation for attending
committee meetings.

                                   ARTICLE 4
                                    NOTICES

     4.1   Whenever, under the provisions of the statutes or of the certificate
of incorporation or of these bylaws, notice is required to be given to any
director or stockholder, it shall not be construed to mean personal notice, but
such notice may be given in writing, by mail, addressed to such director or
stockholder, at his address as it appears on the records of the

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corporation, with postage thereon prepaid, and such notice shall be deemed to be
given at the time when the same shall be deposited in the United States mail.
Notice to directors may also be given by telegram, telephone or facsimile.

     4.2  Whenever any notice is required to be given under the provisions of
the statutes or of the certificate of incorporation or of these bylaws, a waiver
thereof in writing, signed by the person or persons entitled to said notice,
whether before or after the time stated therein, shall be deemed equivalent
thereto.

                                   ARTICLE 5
                                   OFFICERS

     5.1  The officers of the corporation shall be chosen by the Board of
Directors and shall be a chief executive officer, president, chief operating
officer, chief financial officer, treasurer and a secretary. The Board of
Directors may elect from among its members a Chairman of the Board and a Vice
Chairman of the Board. The Board of Directors may also choose one or more vice-
presidents, assistant secretaries and assistant treasurers. Any number of
offices may be held by the same person, unless the certificate of incorporation
or these bylaws otherwise provide.

     5.2  The Board of Directors at its first meeting after each annual meeting
of stockholders shall choose a chief executive officer, president, a treasurer,
and a secretary and may choose a chief operating officer, chief financial
officer, vice-presidents, assistant secretaries and assistant treasurers.

     5.3  The Board of Directors may appoint such other officers and agents as
it shall deem necessary who shall hold their offices for such terms and shall
exercise such powers and perform such duties as shall be determined from time to
time by the Board of Directors.

     5.4  The salaries of all officers and agents of the corporation shall be
fixed by the Board of Directors.

     5.5  The officers of the corporation shall hold office until their
successors are chosen and qualify. Any officer elected or appointed by the Board
of Directors may be removed at any time by the affirmative vote of a majority of
the Board of Directors. Any vacancy occurring in any office of the corporation
shall be filled by the Board of Directors.

                           THE CHAIRMAN OF THE BOARD

     5.6  The Chairman of the Board, if any, shall preside at all meetings of
the Board of Directors and of the stockholders at which he or she shall be
present. He or she shall have and may exercise such powers as are, from time to
time, assigned to him or her by the Board of Directors and as may be provided by
law.

     5.7  In the absence of the Chairman of the Board, the Vice Chairman of the
Board, if any, shall preside at all meetings of the Board of Directors and of
the stockholders at which he or she shall be present. He or she shall have and
may exercise such powers as are, from time to time, assigned to him or her by
the Board of Directors and as may be provided by law.

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                    THE CHIEF EXECUTIVE OFFICER, PRESIDENT,
               CHIEF OPERATING OFFICER, CHIEF FINANCIAL OFFICER
                              AND VICE-PRESIDENTS

     5.8   Chief Executive Officer. The office of chief executive officer will
be filled only upon designation by the Board of Directors. If so designated, the
chief executive officer shall have such other powers and duties as usually
pertain to such office or as may be delegated by the Board of Directors,
including but not limited to the following: the chief executive officer of the
corporation, in the absence of the Chairman and Vice Chairman of the Board,
shall preside at all meetings of the stockholders and the Board of Directors; he
shall have general and active management of the business of the corporation and
shall see that all orders and resolutions of the Board of Directors are carried
into effect .

     5.9   President. In the absence of the chief executive officer of the
corporation, the president shall be the chief executive officer of the
corporation; he shall have general and active management of the business of the
corporation and shall see that all orders and resolutions of the Board of
Directors are carried into effect.

     5.10  Chief Operating Officer. The chief operating officer shall have such
powers and duties as usually pertain to such office or as may be delegated by
the Board of Directors, chief executive officer or president. In the absence of
the chief executive officer and president of the corporation, the chief
operating officer shall be the chief executive officer of the corporation. He
shall have general and active management of the business of the corporation and
shall see that all orders and resolutions of the Board of Directors are carried
into effect.

     5.11  Chief Financial Officer.  The chief operating officer shall have such
powers and duties as usually pertain to such office or as may be delegated by
the Board of Directors, chief executive officer, president, or chief operating
officer.

     5.12  Execution of Instruments Requiring a Seal. The chief executive
officer, the president, the chief operating officer, or the chief financial
officer shall execute bonds, mortgages and other contracts requiring a seal,
under the seal of the corporation, except where required or permitted by law to
be otherwise signed and executed and except where the signing and execution
thereof shall be expressly delegated by the Board of Directors to some other
officer or agent of the corporation.

     5.13  In the absence of the chief executive officer, president, and chief
operating officer, or in the event of their inability or refusal to act, the
vice-president, if any, (or in the event there be more than one vice-president,
the vice-presidents in the order designated by the directors, or in the absence
of any designation, then in the order of their election) shall perform the
duties of the chief executive officer and president, and when so acting, shall
have all the powers of and be subject to all the restrictions upon the chief
executive officer and president.  The vice-presidents shall perform such other
duties and have such other powers as the Board of Directors may from time to
time prescribe.

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                     THE SECRETARY AND ASSISTANT SECRETARY

     5.14  The secretary shall attend all meetings of the Board of Directors and
all meetings of the stockholders and record all the proceedings of the meetings
of the corporation and of the Board of Directors in a book to be kept for that
purpose and shall perform like duties for the standing committees when required.
The secretary shall give, or cause to be given, notice of all meetings of the
stockholders and special meetings of the Board of Directors, and shall perform
such other duties as may be prescribed by the Board of Directors, chief
executive officer or president, under whose supervision he or she shall be. The
secretary shall have custody of the corporate seal of the corporation and the
secretary, or an assistant secretary, shall have authority to affix the same to
any instrument requiring it and when so affixed, it may be attested by his
signature or by the signature of such assistant secretary. The Board of
Directors may give general authority to any other officer to affix the seal of
the corporation and to attest the affixing by his signature.

     5.15  The assistant secretary, or if there be more than one, the assistant
secretaries in the order determined by the Board of Directors (or if there be no
such determination, then in the order of their election) shall, in the absence
of the secretary or in the event of his inability or refusal to act, perform the
duties and exercise the powers of the secretary and shall perform such other
duties and have such other powers as the Board of Directors may from time to
time prescribe.

                      TREASURER AND ASSISTANT TREASURERS

     5.16  The treasurer shall have the custody of the corporate funds and
securities and shall keep full and accurate accounts of receipts and
disbursements in books belonging to the Corporation and shall deposit all moneys
and other valuable effects in the name and to the credit of the Corporation in
such depositories as may be designated by the Board of Directors. Unless
otherwise appointed, the chief financial officer shall be the treasurer.

     5.17  The treasurer shall disburse the funds of the Corporation as may be
ordered by the Board of Directors, taking proper vouchers for such
disbursements, and shall render to the president and the Board of Directors, at
its regular meetings, or when the Board of Directors so requires, an account of
all his or her transactions as treasurer and of the financial condition of the
Corporation.

     5.18  If required by the Board of Directors, the treasurer shall give the
Corporation a bond (which shall be renewed every six years) in such sum and with
such surety or sureties as shall be satisfactory to the Board of Directors for
the faithful performance of the duties of the treasurer's office and for the
restoration to the Corporation, in case of the treasurer's death, resignation,
retirement or removal from office, of all books, papers, vouchers, money and
other property of whatever kind in the treasurer's  possession or under the
treasurer's control belonging to the Corporation.

     5.19  The assistant treasurer, or if there shall be more than one, the
assistant treasurers in the order determined by the Board of Directors (or if
there be no such determination, then in

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the order of their election) shall, in the absence of the treasurer or in the
event of the treasurer's inability or refusal to act, perform the duties and
exercise the powers of the treasurer and shall perform such other duties and
have such other powers as the Board of Directors may from time to time
prescribe.

                                   ARTICLE 6
                             CERTIFICATE OF STOCK

     6.1  Every holder of stock in the Corporation shall be entitled to have a
certificate, signed by, or in the name of the corporation by, the chairman or
vice-chairman of the Board of Directors, or the chief executive officer,
president, chief operating officer, or a vice-president and the treasurer or an
assistant treasurer, or the secretary or an assistant secretary of the
corporation, certifying the number of shares owned by such stockholder in the
Corporation.

          Certificates may be issued for partly paid shares and in such case
upon the face or back of the certificates issued to represent any such partly
paid shares, the total amount of the consideration to be paid therefor, and the
amount paid thereon shall be specified.

          If the Corporation shall be authorized to issue more than one class of
stock or more than one series of any class, the powers, designations,
preferences and relative, participating, optional or other special rights of
each class of stock or series thereof and the qualification, limitations or
restrictions of such preferences and/or rights shall be set forth in full or
summarized on the face or back of the certificate that the Corporation shall
issue to represent such class or series of stock, provided that, except as
otherwise provided in section 202 of the General Corporation Law of Delaware, in
lieu of the foregoing requirements, there may be set forth on the face or back
of the certificate that the Corporation shall issue to represent such class or
series of stock, a statement that the Corporation will furnish without charge to
each stockholder who so requests the powers, designations, preferences and
relative, participating, optional or other special rights of each class of stock
or series thereof and the qualifications, limitations or restrictions of such
preferences and/or rights.

     6.2  Any of or all the signatures on the certificate may be facsimile. In
case any officer, transfer agent or registrar who has signed or whose facsimile
signature has been placed upon a certificate shall have 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 or she were such
officer, transfer agent or registrar at the date of issue.

                               LOST CERTIFICATES

     6.3  The Board of Directors may direct a new certificate or certificates to
be issued in place of any certificate or certificates theretofore issued by the
Corporation alleged to have been lost, stolen or destroyed, upon the making of
an affidavit of that fact by the person claiming the certificate of stock to be
lost, stolen or destroyed. When authorizing such issue of a new certificate or
certificates, the Board of Directors may, in its discretion and as a condition
precedent to the issuance thereof, require the owner of such lost, stolen or
destroyed certificate or certificates, or his legal representative, to advertise
the same in such manner as it shall require

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and/or to give the Corporation a bond in such sum as it may direct as indemnity
against any claim that may be made against the Corporation with respect to the
certificate alleged to have been lost, stolen or destroyed.

                               TRANSFER OF STOCK

     6.4  Upon surrender to the Corporation or the transfer agent of the
Corporation of a certificate for shares duly endorsed or accompanied by proper
evidence of succession, assignation or authority to transfer, it shall be the
duty of the Corporation to issue a new certificate to the person entitled
thereto, cancel the old certificate and record the transaction upon its books.

                              FIXING RECORD DATE

     6.5  In order that the Corporation may determine the stockholders entitled
to notice of or to vote at any meeting of stockholder or any adjournment
thereof, or to express consent to corporate action in writing without a meeting,
or entitled to receive payment of any dividend or other distribution or
allotment of any rights, or entitled to exercise any rights in respect of any
change, conversion or exchange of stock or for the purpose of any other lawful
action, the Board of Directors may fix, in advance, a record date, which shall
not be more than sixty (60) nor less than ten (10) days before the date of such
meeting, nor more than sixty (60) days prior to any other action. A
determination of stockholders of record entitled to notice of or to vote at a
meeting of stockholders shall apply to any adjournment of the meeting; provided,
however, that the Board of Directors may fix a new record date for the adjourned
meeting.

                            REGISTERED STOCKHOLDERS

     6.6  The Corporation shall be entitled to recognize the exclusive right of
a person registered on its books as the owner of shares to receive dividends,
and to vote as such owner, and to hold liable for calls and assessments a person
registered on its books as the owner of shares and shall not be bound to
recognize any equitable or other claim to or interest in such share or shares on
the part of any other person, whether or not it shall have express or other
notice thereof, except as otherwise provided by the laws of Delaware.

                                   ARTICLE 7
                              GENERAL PROVISIONS
                                   DIVIDENDS

     7.1  Dividends upon the capital stock of the Corporation, subject to the
provisions of the certificate of incorporation, if any, may be declared by the
Board of Directors at any regular or special meeting, pursuant to law.
Dividends may be paid in cash, in property, or in shares of the capital stock,
subject to the provisions of the certificate of incorporation.

     7.2  Before payment of any dividend, there may be set aside out of any
funds of the Corporation available for dividends such sum or sums as the
directors from time to time, in their absolute discretion, think proper as a
reserve or reserves to meet contingencies, or for equalizing dividends, or for
repairing or maintaining any property of the Corporation, or for such other

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purposes as the directors shall think conducive to the interest of the
Corporation, and the directors may modify or abolish any such reserve in the
manner in which it was created.

                                    CHECKS

     7.3  All checks or demands for money and notes of the Corporation shall be
signed by such officer or officers or such other person or persons as the Board
of Directors may from time to time designate.

                                  FISCAL YEAR

     7.4  The fiscal year of the corporation shall be fixed by resolution of the
Board of Directors, and if no such resolution has been made shall end on
September 30.

                                     SEAL

     7.5  The Board of Directors may adopt a corporate seal having inscribed
thereon the name of the corporation, the year of its organization and the words
"Corporate Seal, Delaware." The seal may be used by causing it or a facsimile
thereof to be impressed or affixed or reproduced or otherwise.

                                INDEMNIFICATION

     7.6  The corporation shall, to the fullest extent authorized under the laws
of the State of Delaware, as those laws may be amended and supplemented from
time to time, indemnify any director made, or threatened to be made, a party to
an action or proceeding, whether criminal, civil, administrative or
investigative, by reason of being a director of the Corporation or a predecessor
corporation or, at the corporation's request, a director or officer of another
corporation, provided, however, that the Corporation shall indemnify any such
agent in connection with a proceeding initiated by such agent only if such
proceeding was authorized by the Board of Directors of the Corporation. The
indemnification provided for in this Section 7.6 shall: (i) not be deemed
exclusive of any other rights to which those indemnified may be entitled under
any bylaw, agreement or vote of stockholders or disinterested directors or
otherwise, both as to action in their official capacities and as to action in
another capacity while holding such office, (ii) continue as to a person who has
ceased to be a director, and (iii) inure to the benefit of the heirs, executors
and administrators of such a person. The Corporation's obligation to provide
indemnification under this Section 7.6 shall be offset to the extent of any
other source of indemnification or any otherwise applicable insurance coverage
under a policy maintained by the Corporation or any other person.

          Expenses incurred by a director or officer of the Corporation in
defending a civil or criminal action, suit or proceeding by reason of the fact
that he or she is or was a director or officer of the Corporation (or was
serving at the corporation's request as a director or officer of another
corporation) shall be paid by the Corporation in advance of the final
disposition of such action, suit or proceeding upon receipt of an undertaking by
or on behalf of such director or officer to repay such amount if it shall
ultimately be determined that such director or officer is not entitled to be
indemnified by the Corporation as authorized by relevant sections of the

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General Corporation Law of Delaware. Notwithstanding the foregoing, the
Corporation shall not be required to advance such expenses to an agent who is a
party to an action, suit or proceeding brought by the Corporation and approved
by a majority of the Board of Directors of the Corporation that alleges willful
misappropriation of corporate assets by such agent, disclosure of confidential
information in violation of such agent's fiduciary or contractual obligations to
the Corporation or any other willful and deliberate breach in bad faith of such
agent's duty to the Corporation or its stockholders.

          The foregoing provisions of this Section 7.6 shall be deemed to be a
contract between the Corporation and each director or officer who serves in such
capacity at any time while this bylaw is in effect, and any repeal or
modification thereof shall not affect any rights or obligations then existing
with respect to any state of facts then or theretofore existing or any action,
suit or proceeding theretofore or thereafter brought based in whole or in part
upon any such state of facts.

          The Board of Directors in its discretion shall have power on behalf of
the Corporation to indemnify any person, other than a director or officer, made
a party to any action, suit or proceeding by reason of the fact that such
person, their testator or intestate, is or was an officer or employee of the
Corporation.

          To assure indemnification under this Section 7.6 of all directors,
officers and employees who are determined by the Corporation or otherwise to be
or to have been "fiduciaries" of any employee benefit plan of the Corporation
that may exist from time to time, Section 145 of the General Corporation Law of
Delaware shall, for the purposes of this Section 7.6, be interpreted as follows:
an "other enterprise" shall be deemed to include such an employee benefit plan,
including without limitation, any plan of the corporation that is governed by
the Act of Congress entitled "Employee Retirement Income Security Act of 1974,"
as amended from time to time; the Corporation shall be deemed to have requested
a person to serve an employee benefit plan where the performance by such person
of his duties to the Corporation also imposes duties on, or otherwise involves
services by, such person to the plan or participants or beneficiaries of the
plan; excise taxes assessed on a person with respect to an employee benefit plan
pursuant to such Act of Congress shall be deemed "fines."

                                   ARTICLE 8
                                  AMENDMENTS

     8.1  These bylaws may be altered, amended or repealed or new bylaws may be
adopted by stockholders holding at least two-thirds (66 2/3%) of the
Corporation's outstanding capital stock ("Amending Stockholders") or by the
Board of Directors, when such power is conferred upon the Board of Directors by
the certificate of incorporation at any regular meeting of the stockholders or
of the Board of Directors or by the Amending Stockholders at any special meeting
of the stockholders or by the Board of Directors at any special meeting of the
Board of Directors if notice of such alteration, amendment, repeal or adoption
of new bylaws be contained in the notice of such special meeting.  If the power
to adopt, amend or repeal bylaws is conferred upon the Board of Directors by the
certificate or incorporation it shall not divest or limit the power of the
stockholders to adopt, amend or repeal bylaws.

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                                   ARTICLE 9
                               LOANS TO OFFICERS

     9.1  The corporation may lend money to, or guarantee any obligation of, or
otherwise assist any officer or other employee of the corporation or of its
subsidiaries, including any officer or employee who is a Director of the
corporation or its subsidiaries, whenever, in the judgment of the Board of
Directors, such loan, guarantee or assistance may reasonably be expected to
benefit the corporation.  The loan, guarantee or other assistance may be with or
without interest and may be unsecured, or secured in such manner as the Board of
Directors shall approve, including, without limitation, a pledge of shares of
stock of the corporation.  Nothing in these bylaws shall be deemed to deny,
limit or restrict the powers of guaranty or warranty of the corporation at
common law or under any statute.

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                          CERTIFICATE OF SECRETARY OF
                           CHORUM TECHNOLOGIES INC..

          The undersigned, Kent Coker, hereby certifies that he is the duly
elected and acting Secretary of Chorum Technologies Inc., a Delaware corporation
(the "Corporation"), and that the Bylaws attached hereto constitute the Bylaws
of said Corporation as duly adopted by the Directors on October 11, 2000.

          IN WITNESS WHEREOF, the undersigned has hereunto subscribed his name
this _____ day of __________, 2001.



                                        ________________________________________
                                        Kent Coker
                                        Secretary