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                                                                     EXHIBIT 3.5

                              AMENDED AND RESTATED


                                    BYLAWS OF


                               QUINTUS CORPORATION


                             A DELAWARE CORPORATION

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                                TABLE OF CONTENTS



                                                                                                PAGE
                                                                                                ----
                                                                                               
ARTICLE I  OFFICE AND RECORDS......................................................................1
         Section 1.1  Delaware Office..............................................................1
         Section 1.2  Other Offices................................................................1
         Section 1.3  Books and Records............................................................1

ARTICLE II  STOCKHOLDERS.......................................................................... 1
         Section 2.1  Annual Meeting...............................................................1
         Section 2.2  Special Meeting..............................................................1
         Section 2.3  Place of Meeting.............................................................2
         Section 2.4  Notice of Meeting............................................................2
         Section 2.5  Quorum and Adjournment.......................................................2
         Section 2.6  Proxies......................................................................2
         Section 2.7  Notice of Stockholder Business and Nominations...............................3
         Section 2.8  Procedure for Election of Directors..........................................5
         Section 2.9  Inspectors of Elections; Opening and Closing the Polls.......................5
         Section 2.10  Consent of Stockholders in Lieu of Meeting..................................5

ARTICLE III  BOARD OF DIRECTORS....................................................................6
         Section 3.1  General Powers...............................................................6
         Section 3.2  Number, Tenure and Qualifications............................................6
         Section 3.3  Regular Meetings.............................................................6
         Section 3.4  Special Meetings.............................................................6
         Section 3.5  Notice.......................................................................7
         Section 3.6  Conference Telephone Meetings................................................7
         Section 3.7  Quorum.......................................................................7
         Section 3.8  Vacancies....................................................................7
         Section 3.9  Committee....................................................................8
         Section 3.10  Removal.....................................................................8

ARTICLE IV  OFFICERS...............................................................................8
         Section 4.1  Elected Officers.............................................................8
         Section 4.2  Election and Term of Office..................................................8
         Section 4.3  Chairman of the Board........................................................9
         Section 4.4  President and Chief Executive Officer........................................9
         Section 4.5  Secretary....................................................................9
         Section 4.6  Treasurer....................................................................9
         Section 4.7  Removal.....................................................................10
         Section 4.8  Vacancies...................................................................10

ARTICLE V  STOCK CERTIFICATES AND TRANSFERS.......................................................10
         Section 5.1  Stock Certificates and Transfers............................................10


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                                                                                                PAGE
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ARTICLE VI  INDEMNIFICATION.......................................................................11
         Section 6.1  Right to Indemnification....................................................11
         Section 6.2  Prepayment of Expenses......................................................11
         Section 6.3  Claims......................................................................12
         Section 6.4  Nonexclusivity of Rights....................................................12
         Section 6.5  Amendment or Repeal.........................................................12
         Section 6.6  Other Indemnification and Prepayment of Expenses............................12

ARTICLE VII  MISCELLANEOUS PROVISIONS.............................................................12
         Section 7.1  Fiscal Year.................................................................12
         Section 7.2  Dividends...................................................................12
         Section 7.3  Seal........................................................................13
         Section 7.4  Waiver of Notice............................................................13
         Section 7.5  Audits......................................................................13
         Section 7.6  Resignations................................................................13
         Section 7.7  Contracts...................................................................13
         Section 7.8  Proxies.....................................................................13

ARTICLE VIII AMENDMENTS...........................................................................14
         Section 8.1  Amendments..................................................................14


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                                    ARTICLE I

                               OFFICES AND RECORDS

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

            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 at the Corporation's headquarters in San Francisco,
California or at such other locations outside the State of Delaware 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 at such date, place and/or time as may be fixed
by resolution of the Board of Directors.

            Section 2.2 Special Meeting.

                  A. Special meetings of the stockholders, for any purpose or
 purposes, unless otherwise prescribed by statute or by the certificate of
 incorporation, may be called by the president and shall be called by the
 president or secretary at the request in writing of a majority of the Board of
 Directors, or at the request in writing of stockholders owning at least ten
 percent (10%) in amount of the entire capital stock of the corporation issued
 and outstanding and entitled to vote. Such request shall state the purpose or
 purposes of the proposed meeting.

                  B. Notwithstanding the above provisions of this Section
 2.2(A), effective upon a closing of an initial public offering of the
 Corporation's securities pursuant to a registration statement filed under the
 Securities Act of 1933, as amended, a special meeting of the stockholders of
 the corporation may be called only by the President, the Chairman of the Board
 or by the Board of Directors pursuant to a resolution adopted by a majority of
 the total number of directors which the Corporation would have if there were no
 vacancies (the "Whole Board"), or at the request in writing of stockholders
 owning at least fifty percent (50%) in amount of the entire capital stock of
 the corporation issued and outstanding and entitled to vote.

            Section 2.3 Place of Meeting. The Board of Directors may designate
the place of meeting for any meeting of the stockholders. If no designation is
made by the Board of Directors, the place of meeting shall be the principal
office of the Corporation.

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            Section 2.4 Notice of Meeting. Written or printed notice, stating
the place, day and hour of the meeting and the purposes for which the meeting is
called, shall be prepared and delivered by the Corporation not less than ten
days nor more than sixty 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 his
address as it appears on the stock transfer books of the Corporation. Such
further notice shall be given as may be required by law. Meetings may be held
without notice if all stockholders entitled to vote are present (except as
otherwise provided by law), or if notice is waived by those not present. Any
previously scheduled meeting of the stockholders may be postponed and (unless
the Certificate of Incorporation otherwise provides) any special meeting of the
stockholders may be cancelled, by resolution of the Board of Directors upon
public notice given prior to the time previously scheduled for such meeting of
stockholders.

            Section 2.5 Quorum and Adjournment. Except as otherwise provided by
law or by the Certificate of Incorporation, the holders of a majority of the
voting power of the 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
voting separately as a class or series, the holders of a majority of the voting
power of the shares of such class or series shall constitute a quorum for the
transaction of such business. The chairman of the meeting or a majority of the
shares of Voting Stock so represented may adjourn the meeting from time to time,
whether or not there is such a quorum (or, in the case of specified business to
be voted on by a class or series, the chairman or a majority of the shares of
such class or series so represented may adjourn the meeting with respect to such
specified business). No notice of the time and place of adjourned meetings need
be given except as required by law. The stockholders present at a duly organized
meeting 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 by the stockholder or as may be permitted
by law, or by his duly authorized attorney-in-fact. Such proxy must be filed
with the Secretary of the Corporation or his representative at or before the
time of the meeting.

            Section 2.7 Notice of Stockholder Business and Nominations.

                  A.    Annual Meeting 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 delivered pursuant to
Section 2.4 of these Bylaws; (b) by or at the direction of the Chairman of the
Board or the Board of Directors; or (c) by any stockholder of the Corporation
who is entitled to vote at the meeting, who has complied with the notice
procedures set forth in


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clauses (2) and (3) of this paragraph (A) of this Bylaw and who was a
stockholder of record at the time such notice was delivered to the Secretary of
the Corporation.

                        (2)   For   nominations   or  other   business  to  be
properly brought before an annual meeting by a stockholder pursuant to a clause
(c) of paragraph (A)(1) of this Bylaw, 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 less than seventy days nor more than
ninety 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 twenty days, or delayed by more than seventy
days, from such anniversary date, notice by the stockholder to be timely must be
so delivered not earlier than the ninetieth day prior to such annual meeting and
not later than the close of business on the later of the seventieth day prior to
such annual meeting or the ten day following the day on which public
announcement of the date of such meeting is first made. 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. 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.

                        (3)   Notwithstanding  anything in the second sentence
of paragraph (A)(2) 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 eighty 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 tenth day following the day on which such public announcement is
first made by the Corporation.


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                  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 pursuant to
 Section 2.4 of these Bylaws. 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) by any stockholder of
 the Corporation who is entitled to vote at the meeting, who complies with the
 notice procedures set forth in this Bylaw and who is a stockholder of record at
 the time such notice is delivered to the Secretary of the Corporation. 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 such
 stockholder may nominate a person or persons (as the case may be), for election
 to such position(s) as are specified in the Corporation's Notice of Meeting, if
 the stockholder's notice as required by paragraph (A)(2) of this Bylaw shall be
 delivered to the Secretary at the principal executive offices of the
 Corporation not earlier than the ninetieth day prior to such special meeting
 and not later than the close of business on the later of the seventieth day
 prior to such special meeting or the tenth day following the day 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  persons who are  nominated  in  accordance
with the procedures set forth in this Bylaw 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 Bylaw. Except as otherwise provided by law, the Certificate of
Incorporation or 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 this Bylaw and, if any proposed nomination or business is not in compliance
with this Bylaw, to declare that such defective proposal or nomination shall be
disregarded.

                        (2) For purposes of this Bylaw, "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 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.


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            Section 2.8 Procedure for Election of Directors. Election of
directors at all meetings of the stockholders at which directors are to be
elected shall be by written ballot, and, except as otherwise set forth in the
Certificate of Incorporation with respect to the right of the holders of any
series of Preferred Stock or any other series or class of stock to elect
additional directors under specified circumstances, a plurality of the votes
cast thereat shall elect directors. Except as otherwise provided by law, the
Certificate of Incorporation or these Bylaws, all matters other than the
election of directors submitted to the stockholders at any meeting shall be
decided by the affirmative vote of a majority of the voting power of the
outstanding Voting Stock present in person or represented by proxy at the
meeting and entitled to vote thereon.

            Section 2.9 Inspectors of Elections; Opening and Closing the Polls.

                  A.    The Board of Directors by resolution shall 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 of the Corporation, to act at the
meeting and make a written report thereof. One or more persons may be designated
as alternate inspectors to replace any inspector who fails to act. If no
inspector or alternate has been appointed to act, or if all inspectors or
alternates who have been appointed are unable 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 his or her duties,
shall take and sign an oath faithfully to execute the duties of inspector with
strict impartiality and according to the best of his or her ability. The
inspectors shall have the duties prescribed by the General Corporation Law of
the State of Delaware.

                  B.    The chairman of the meeting shall 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  Consent of Stockholders in Lieu of Meeting.

                  A.    Unless otherwise provided in the certificate of
 incorporation, any action required to be taken at any annual or special meeting
 of stockholders of the Corporation, or any action which may be taken at any
 annual or special meeting of such stockholders, may be taken without a meeting,
 without prior notice and without a vote, if a consent in writing, setting forth
 the action so taken, shall be signed by the holders of outstanding stock having
 not less than the minimum number of votes that would be necessary to authorize
 or take such action at a meeting at which all shares entitled to vote thereon
 were present and voted. Prompt notice of the taking of the corporate action
 without a meeting by less than unanimous written consent shall be given to
 those stockholders who have not consented in writing. Any written consent may
 be revoked by a writing received by the Secretary of the Corporation prior to
 the time that written consents of the number of shares required to authorize
 the proposed action have been filed with the Secretary.

                  B.    Notwithstanding the above provisions of this Section
 2.10(A), effective upon a closing of an initial public offering of the
 Corporation's securities pursuant to a registration statement filed under the
 Securities Act of 1933, as amended, the stockholders of


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the Corporation may not take action by written consent without a meeting but
must take any such actions at a duly called annual or special meeting.


                                   ARTICLE III

                               BOARD OF DIRECTORS

            Section 3.1 General Powers. The business and affairs of the
Corporation shall be managed by or under the direction of its Board of
Directors. In addition to the powers and authorities by these Bylaws 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 law, by the
Certificate of Incorporation or by these Bylaws required to be exercised or done
by the stockholders.

            Section 3.2 Number, Tenure and Qualifications. Subject to the
rights of the holders of any series of Preferred Stock, or any other series or
class of stock as set forth in the Certificate of Incorporation, to elect
directors under specified circumstances, the number of directors shall initially
be four (4) and shall be fixed from time to time thereafter by a majority of the
Board of Directors.

            Section 3.3 Regular Meetings. A regular meeting of the Board of
Directors shall be held without notice other than this Bylaw immediately after,
and at the same place as, each annual meeting of stockholders. The Board of
Directors may, by resolution, provide the time and place for the holding of
additional regular meetings without notice other 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. 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 shall be given to
each director at his business or residence in writing or by telegram or by
telephone communication. If mailed, such notice shall be deemed adequately
delivered when deposited in the United States mails so addressed, with postage
thereon prepaid, at least five days before such meeting. If by telegram, such
notice shall be deemed adequately delivered when the telegram is delivered to
the telegraph company at least twenty-four hours before such meeting. If by
facsimile transmission, such notice shall be transmitted at least twenty-four
hours before such meeting. If by telephone, the notice shall be given at least
twelve 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 Bylaws as provided under Section 8.1 of Article VIII hereof.
A meeting may be held at any time without notice if all the directors are
present (except as otherwise provided by law) or if those not present waive
notice of the meeting in writing, either before or after such meeting.


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            Section 3.6 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 3.7 Quorum. 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 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.

            Section 3.8 Vacancies. Subject to the rights of the holders of any
series of Preferred Stock, or any other series or class of stock as set forth in
the Certificate of Incorporation, to elect additional directors under specified
circumstances, and unless the Board of Directors otherwise determines, vacancies
resulting from death, resignation, retirement, disqualification, removal from
office or other cause, and newly created directorships resulting from any
increase in the authorized number of directors, may be filled only by the
affirmative vote of a majority of the remaining directors, though less than a
quorum of the Board of Directors, and directors so chosen shall hold office for
a term expiring at the annual meeting of stockholders at which the term of
office of the class to which they have been elected expires and until such
director's successor shall have been duly elected and qualified. No decrease in
the number of authorized directors constituting the Whole Board shall shorten
the term of any incumbent director.

            Section 3.9 Committee.

                  A.    The Board of Directors may designate one or more
 committees, each committee to consist of one or more of the directors of the
 Corporation. The Board of Directors 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. In the absence or disqualification of a
 member of the committee, the member or members thereof present at any meeting
 and not disqualified from voting, whether or not he or they constitute a
 quorum, may unanimously appoint another member of the Board of Directors to act
 at the meeting in place of any such absent or disqualified member. Any such
 committee, to the extent permitted by law and 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 which may require it.

                  B.    Unless the Board of Directors otherwise provides, each
 committee designated by the Board of Directors may make, alter and repeal rules
 for the conduct of its business. In the absence of such rules each committee
 shall conduct its business in the same manner as the Board of Directors
 conducts its business pursuant to these Bylaws.


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            Section 3.10 Removal. Subject to the rights of the holders of any
series of Preferred Stock, or any other series or class of stock as set forth in
the Certificate of Incorporation, to elect additional directors under specified
circumstances, any director, or the entire Board of Directors, may be removed
from office at any time, with or without cause, only by the affirmative vote of
the holders of at least sixty-six and two-thirds percent (66 2/3 %) of the
voting power of the then outstanding Voting Stock, voting together as a single
class.


                                   ARTICLE IV

                                    OFFICERS

            Section 4.1 Elected Officers. The elected officers of the
Corporation shall be a Chairman of the Board, a President, a Secretary, a
Treasurer, and such other officers as the Board of Directors from time to time
may deem proper. The Chairman of the Board shall be chosen from the directors.
All officers chosen 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 powers and duties
as from time to time may be conferred by the Board of Directors or by any
committee thereof.

            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 each 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. Subject to Section
4.7 of these Bylaws, each officer shall hold office until his successor shall
have been duly elected and shall have qualified or until his death or until he
shall resign.

            Section 4.3 Chairman of the Board. The Chairman of the Board shall
preside at all meetings of the Board.

            Section 4.4 President and Chief Executive Officer. The President
and Chief Executive Officer shall be the general manager of the Corporation,
subject to the control of the Board of Directors, and as such shall preside at
all meetings of shareholders, shall have general supervision of the affairs of
the Corporation, shall sign or countersign or authorize another officer to sign
all certificates, contracts, and other instruments of the Corporation as
authorized by the Board of Directors, shall make reports to the Board of
Directors and shareholders, and shall perform all such other duties as are
incident to such office or are properly required by the Board of Directors. If
the Board of Directors creates the office of Chief Executive Officer as a
separate office from President, the President shall be the chief operating
officer of the corporation and shall be subject to the general supervision,
direction, and control of the Chief Executive Officer unless the Board of
Directors provides otherwise.

            Section 4.5 Secretary. The Secretary shall give, or cause to be
given, notice of all meetings of stockholders and directors and all other
notices required by law or by these Bylaws, and in case of his absence or
refusal or neglect so to do, any such notice may be given by any person
thereunto directed by the Chairman of the Board or the President, or by the
Board


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of Directors, upon whose request the meeting is called as provided in these
Bylaws. He shall record all the proceedings of the meetings of the Board of
Directors, any committees thereof and the stockholders of the Corporation in a
book to be kept for that purpose, and shall perform such other duties as may be
assigned to him by the Board of Directors, the Chairman of the Board or the
President. He shall have custody of the seal of the Corporation and shall affix
the same to all instruments requiring it, when authorized by the Board of
Directors, the Chairman of the Board or the President, and attest to the same.

            Section 4.6 Treasurer. The Treasurer shall have the custody of the
corporate funds and securities and shall keep full and accurate receipts and
disbursements in books belonging to the Corporation. The Treasurer shall deposit
all moneys and other valuables in the name and to the credit of the Corporation
in such depositaries as may be designated by the Board of Directors. The
Treasurer shall disburse the funds of the Corporation as may be ordered by the
Board of Directors the Chairman of the Board, or the President, taking proper
vouchers for such disbursements. The Treasurer shall render to the Chairman of
the Board, the President and the Board of Directors, whenever requested, an
account of all his transactions as Treasurer and of the financial condition of
the Corporation. If required by the Board of Directors, the Treasurer shall give
the Corporation a bond for the faithful discharge of his duties in such amount
and with such surety as the Board of Directors shall prescribe.

            Section 4.7 Removal. Any officer elected by the Board of Directors
may be removed by the Board of Directors whenever, in their 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 his successor, his death,
his resignation or his removal, whichever event shall first occur, except as
otherwise provided in an employment contract or an employee plan.

            Section 4.8 Vacancies. A newly created office and a vacancy in any
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.


                                    ARTICLE V

                        STOCK CERTIFICATES AND TRANSFERS

            Section 5.1 Stock Certificates and Transfers.

                  A.    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 his attorney, upon surrender
for cancellation of certificates for the same number of shares, with an
assignment and power of transfer endorsed thereon or attached thereto, duly
executed, and with such proof of the authenticity of the signature as the
Corporation or its agents may reasonably require.


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                  B. 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.

            Section 5.2 Market Stand-Off. Each person who receives or purchases
shares of capital stock of the corporation on or after November 2, 1999 and
prior to the effective date of the corporation's initial public offering ("IPO")
shall not, during the 180-day period following the effective date of the
registration statement of the corporation filed under the Act in connection with
the IPO, to the extent requested by the Board of Directors of the corporation
(x) offer, pledge, sell, contract to sell, sell any option or contract to
purchase, purchase any option or contract to sell, grant any option, right or
warrant to purchase, or otherwise transfer or dispose of, directly or
indirectly, any shares of Common Stock or any securities convertible into or
exercisable or exchangeable for Common Stock (including, without limitation,
shares of Common Stock or securities convertible into or exercisable or
exchangeable for Common Stock which may be deemed to be beneficially owned by
the undersigned in accordance with the rules and regulations of the Securities
and Exchange Commission) or (y) enter into any swap or other arrangement that
transfers all or a portion of the economic consequences associated with the
ownership of any Common Stock (regardless of whether any of the transactions
described in clause (x) or (y) is to be settled by the delivery of Common Stock,
or such other securities, in cash or otherwise). The corporation may impose
stop-transfer instructions with respect to the stock of each person subject to
the foregoing restrictions (and the shares or securities of every other person
subject to the foregoing restrictions) until the end of such period. All
certificates representing any shares of stock of the corporation subject to the
foregoing restrictions shall have endorsed thereon the following legend:

      THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO THE TERMS
      AND CONDITIONS OF A 180-DAY MARKET STANDOFF REQUIREMENT CONTAINED IN THE
      CORPORATION'S BYLAWS. COPIES OF THE BYLAWS MAY BE OBTAINED UPON WRITTEN
      REQUEST TO THE SECRETARY OF THE CORPORATION.


                                   ARTICLE VI

                                 INDEMNIFICATION

            Section 6.1 Right to Indemnification. The Corporation shall
indemnify and hold harmless, to the fullest extent permitted by applicable law
as it presently exists or may hereafter be amended, any person (an "Indemnitee")
who was or is made or is threatened to be made a party or is otherwise involved
in any action, suit or proceeding, whether civil, criminal, administrative or
investigative (a "Proceeding"), by reason of the fact that he, or a person for
whom he is the legal representative, is or was a director or officer of the
Corporation or, while a


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director or officer of the Corporation, is or was serving at the request of the
Corporation as a director, officer, employee or agent of another corporation or
of a partnership, joint venture, trust, enterprise or nonprofit entity,
including service with respect to employee benefit plans, against all liability
and loss suffered and expenses (including attorneys' fees) reasonably incurred
by such Indemnitee. Notwithstanding the preceding sentence, except as otherwise
provided in Section 6.3, the Corporation shall be required to indemnify an
Indemnitee in connection with a proceeding (or part thereof) commenced by such
Indemnitee only if the commencement of such proceeding (or part thereof) by the
Indemnitee was authorized by the Board of Directors of the Corporation.

            Section 6.2 Prepayment of Expenses. The Corporation shall pay the
expenses (including attorneys' fees) incurred by an Indemnitee in defending any
proceeding in advance of its final disposition, provided, however, that, to the
extent required by law, such payment of expenses in advance of the final
disposition of the proceeding shall be made only upon receipt of an undertaking
by the Indemnitee to repay all amounts advanced if it should be ultimately
determined that the Indemnitee is not entitled to be indemnified under this
Article VI or otherwise.

            Section 6.3 Claims. If a claim for indemnification or payment of
expenses under this Article VI is not paid in full within sixty days after a
written claim therefor by the Indemnitee has been received by the Corporation,
the Indemnitee may file suit to recover the unpaid amount of such claim and, if
successful in whole or in part, shall be entitled to be paid the expense of
prosecuting such claim. In any such action the Corporation shall have the burden
of proving that the Indemnitee is not entitled to the requested indemnification
or payment of expenses under applicable law.

            Section 6.4 Nonexclusivity of Rights. The rights conferred on any
Indemnitee by this Article VI shall not be exclusive of any other rights which
such Indemnitee may have or hereafter acquire under any statute, provision of
the Certificate of Incorporation, these Bylaws, agreement, vote of stockholders
or disinterested directors or otherwise.

            Section 6.5 Amendment or Repeal. Any repeal or modification of the
foregoing provisions of this Article VI shall not adversely affect any right or
protection hereunder of any Indemnitee in respect of any act or omission
occurring prior to the time of such repeal or modification.

            Section 6.6 Other Indemnification and Prepayment of Expenses. This
Article VI shall not limit the right of the Corporation, to the extent and in
the manner permitted by law, to indemnify and to advance expenses to persons
other than Indemnitees when and as authorized by appropriate corporate action.


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                                   ARTICLE VII

                            MISCELLANEOUS PROVISIONS

            Section 7.1 Fiscal Year. The fiscal year of the Corporation shall
begin on the first day of January and end on the thirty-first day of December of
each year.

            Section 7.2 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 its Certificate of
Incorporation.

            Section 7.3 Seal. The corporate seal shall have inscribed the name
of the Corporation thereon and shall be in such form as may be approved from
time to time by the Board of Directors.

            Section 7.4 Waiver of Notice. Whenever any notice is required to be
given to any stockholder or director of the Corporation under the provisions of
the General Corporation Law of the State of Delaware, 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 of the Board of Directors need be
specified in any waiver of notice of such meeting.

            Section 7.5 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 made
annually.

            Section 7.6 Resignations. Any director or any officer, whether
elected or appointed, may resign at any time by serving written notice of such
resignation on 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 date as is stated therein. No formal action shall
be required of the Board of Directors or the stockholders to make any such
resignation effective.

            Section 7.7 Contracts. Except as otherwise required by law, the
Certificate of Incorporation or these Bylaws, 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 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 Vice President of the Corporation may delegate
contractual powers to others under his 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.


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            Section 7.8 Proxies. Unless otherwise provided by resolution
adopted by the Board of Directors, the Chairman of the Board, the President or
any Vice President may from time to time appoint any 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 or other
entity, any of whose stock or other securities may be held by the Corporation,
at meetings of the holders of the stock and other securities of such other
corporation or other entity, or to consent in writing, in the name of the
Corporation as such holder, to any action by such other corporation or other
entity, 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. These Bylaws may be amended, altered, added
to, rescinded or repealed at any meeting of the Board of Directors or of the
stockholders, provided notice of the proposed change was given in the notice of
the meeting and, in the case of a meeting of the Board of Directors, in a notice
given no less than twenty-four hours prior to the meeting; provided, however,
that, notwithstanding any other provisions of these Bylaws or any provision of
law which might otherwise permit a lesser vote or no vote, but in addition to
any affirmative vote of the holders of any particular class or series of the
stock required by law, the Certificate of Incorporation or these Bylaws, the
affirmative vote of the holders of at least 80 percent of the voting power of
the then outstanding Voting Stock, voting together as a single class, shall be
required in order for stockholders to alter, amend or repeal any provision of
these Bylaws or to adopt any additional bylaw.


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                           CERTIFICATE OF SECRETARY OF

                               QUINTUS CORPORATION


            The undersigned, Susan Salvesen, hereby certifies that she is the
duly elected and acting Secretary of Quintus Corporation, 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 __, 1999.

            IN WITNESS WHEREOF, the undersigned has hereunto subscribed her name
this ____ day of October, 1999.




                                       ------------------------------
                                       Susan Salvesen
                                       Secretary