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                                                                     EXHIBIT 4.3

                       ASPECT COMMUNICATIONS CORPORATION

                       1990 EMPLOYEE STOCK PURCHASE PLAN


     The following constitute the provisions of the 1990 Employee Stock Purchase
Plan of Aspect Communications Corporation.

     1.  Purpose.  The purpose of the Plan is to provide employees of the
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Company and its Designated Subsidiaries with an opportunity to purchase Common
Stock of the Company through accumulated payroll deductions.  It is the
intention of the Company to have the Plan qualify as an "Employee Stock Purchase
Plan" under Section 423 of the Internal Revenue Code of 1986, as amended.  The
provisions of the Plan shall, accordingly, he construed so as to extend and
limit participation in a manner consistent with the requirements of that section
of the Code.

     2.  Definitions.
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          (a) "Board" shall mean the Board of Directors of the Company.
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          (b) "Code" shall mean the Internal Revenue Code of 1986, as amended.
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          (c) "Common Stock" shall mean the Common Stock of the Company.
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          (d) "Company" shall mean Aspect Communications Corporation, a
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California corporation.

          (e) "Compensation" shall mean all base straight time gross earnings
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plus commissions, overtime, shift differential, on-call pay, call-in pay,
incentive compensation, bonus or other cash compensation but exclusive of fringe
benefits (including disability benefits).

          (f) "Designated Subsidiaries" shall mean the Subsidiaries which have
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been designated by the Board from time to time in its sole discretion as
eligible to participate in the Plan.

          (g) "Employee" shall mean any individual who is an employee of the
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Company for purposes of tax withholding under the Code whose customary
employment with the Company or any Designated Subsidiary is at least twenty (20)
hours per week and more than five (5) months in any calendar year.  For purposes
of the Plan, the employment relationship shall be treated as continuing intact
while the individual is on sick leave or other leave of absence approved by the
Company.  Where the period of leave exceeds 90 days and the individual's right
to reemployment is not guaranteed either by statute or by contract, the
employment relationship will be deemed to have terminated on the 91st day of
such leave.

          (h) "Enrollment Date" shall mean the first day of each Offering
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Period.

          (i) "Exercise Date" shall mean the last day of each Offering Period.
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          (j) "Offering Period" shall mean a period of approximately six (6)
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months, commencing on February 16 and terminating on August 15, or commencing on
August 16 and terminating on February 15 of the next year, during which an
option granted pursuant to the Plan may be exercised.  If February 16 or August
16 falls on a Saturday, Sunday or holiday, then the period will
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commence on the next business day. If August 15 or February 15 falls on a
Saturday, Sunday or holiday, then the period will terminate on the preceding
business day.

          (k) "Plan" shall mean this Employee Stock Purchase Plan.
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          (l) "Reserves" shall mean the number of shares of Common Stock covered
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by each option under the Plan which have not yet been exercised and the number
of shares of Common Stock which have been authorized for issuance under the Plan
but not yet placed under option.

          (m) "Subsidiary" shall mean a corporation, domestic or foreign, of
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which not less than 50% of the voting shares are held by the Company or a
Subsidiary, whether or not such corporation now exists or is hereafter organized
or acquired by the Company or a Subsidiary.

          (n) "Trading Day" shall mean a day on which national stock exchanges
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and the National Association of Securities Dealers Automated Quotation System
are open for trading.

     3.  Eligibility.
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          (a) Any Employee as defined in paragraph 2 who shall be employed by
the Company on a given Enrollment Date shall be eligible to participate in the
Plan.

          (b) Any provisions of the Plan to the contrary notwithstanding, no
Employee shall be granted an option under the Plan (i) if, immediately after the
grant, such Employee (or any other person whose stock would be attributed to
such Employee pursuant to Section 425(d) of the Code) would own stock and/or
hold outstanding options to purchase stock possessing five percent (5%) or more
of the total combined voting power or value of all classes of stock of the
Company or of any subsidiary of the Company, or (ii) which permits his or her
rights to purchase stock under all employee stock purchase plans of the Company
and its subsidiaries to accrue at a rate which exceeds Twenty-Five Thousand
Dollars ($25,000) worth of stock (determined at the fair market value of the
shares at the time such option is granted) for each calendar year in which such
option is outstanding at any time.

     4.  Offering Periods.  The Plan shall be implemented by consecutive
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Offering Periods with a new Offering Period commencing on February 16 and August
16 of each year (if February 16 or August 16 falls on a Saturday, Sunday or
holiday, the period will commence on the next business day), or on such other
date as the Board shall determine, and continuing thereafter until terminated in
accordance with paragraph 19 hereof.  The Board shall have the power to change
the duration of Offering Periods with respect to future offerings without
shareholder approval if such change is announced at least fifteen (15) days
prior to the scheduled beginning of the first Offering Period to be affected.

     5.  Participation.
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          (a) An eligible Employee may become a participant in the Plan either
by enrolling via the Genie Human Resources Information Access and Processing
System or by completing a subscription agreement authorizing payroll deductions
in the form provided by the Company's Stock Administration department.
Enrollment must be received by the Stock Administration department prior to the
close of business on the applicable Enrollment Date, unless a later time for
filing the subscription agreement is set by the Board for all eligible Employees
with respect to a given Offering Period.
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          (b) Payroll deductions for a participant shall commence on the first
payroll following the Enrollment Date and shall end on the last payroll in the
Offering Period to which such authorization is applicable, unless sooner
terminated by the participant as provided in paragraph 10.

     6.  Payroll Deductions.
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          (a) At the time a participant files his or her subscription agreement,
he or she shall elect to have payroll deductions made on each payday during the
Offering Period in an amount not exceeding ten percent (10%) of the Compensation
which he or she receives on each payday during the Offering Period, and the
aggregate of such payroll deductions during the Offering Period shall not exceed
ten percent (10%) of the participant's Compensation during said Offering Period.

          (b) All payroll deductions made for a participant shall be credited to
his or her account under the Plan and will be withheld in whole percentages
only.  A participant may not make any additional payments into such account.

          (c) A participant may discontinue his or her participation in the Plan
as provided in paragraph 10, or may decrease, but not increase, the rate of his
or her payroll deductions during the Offering Period (within the limitations of
Section 6(a)) by changing his or her payroll deduction rate through the Genie
Human Resources Information Access and Processing System or by completing and
filing with the Company a new subscription agreement authorizing a change in
payroll deduction rate.  The Board shall be authorized to limit the number of
participation rate changes during any Offering Period.  The change in rate shall
be effective with the first full payroll period following ten (10) business days
after the Company's receipt of the new subscription agreement or change in
payroll deduction rate unless the Company elects to process a given change in
participation more quickly.  A participant's subscription agreement or change in
payroll deduction rate shall remain in effect for successive Offering Periods
unless revised as provided herein or terminated as provided in paragraph 10.

          (d) Notwithstanding the foregoing, to the extent necessary to comply
with Section 423(b)(8) of the Code and paragraph 3(b) herein, a participant's
payroll deductions may be decreased to 0% during an Offering Period.  Payroll
deductions shall recommence at the rate provided in such participant's
subscription agreement at the beginning of the first Offering Period which is
scheduled to end in the following calendar year, unless terminated by the
participant as provided in paragraph 10.

          (e) At the time the option is exercised, in whole or in part, or at
the time some or all of the Company's Common Stock issued under the Plan is
disposed of, the participant must make adequate provision for the Company's
federal, state, or other tax withholding obligations, if any, which arise upon
the exercise of the option or the disposition of the Common Stock.  At any time,
the Company may, but will not be obligated to, withhold from the participant's
compensation the amount necessary for the Company to meet applicable withholding
obligations, including any withholding required to make available to the Company
any tax deductions or benefit attributable to sale or early disposition of
Common Stock purchased by the Employee under this Plan.

     7.  Grant of Option.
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          (a) On the Enrollment Date of each Offering Period, each eligible
Employee participating in such Offering Period shall be granted an option to
purchase on each Exercise Date during such Offering Period (at the per share
option price) up to a number of shares of the Company's Common Stock determined
by dividing such Employee's payroll deductions accumulated prior to such
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Exercise Date and retained in the Participant's account as of the Exercise Date
by the lower of (i) eighty-five percent (85%) of the fair market value of a
share of the Company's Common Stock on the Enrollment Date or (ii) eighty-five
percent (85%) of the fair market value of a share of the Company's Common Stock
on the Exercise Date; provided, however, that the maximum number of shares an
Employee may purchase during each Offering Period shall be 250 Shares, subject
to a pro rata adjustment upon a change in the duration of a future Offering
Period and subject to adjustment pursuant to Section 18 below and provided
further that such purchase shall be subject to the limitations set forth in
Sections 3(b) and 12 hereof.  Exercise of the option shall occur as provided in
Section 8, unless the participant has withdrawn pursuant to Section 10, and
shall expire on the last day of the Offering Period.  Fair market value of a
share of the Company's Common Stock shall be determined as provided in Section
7(b) herein.

          (b) The option price per share of the shares offered in a given
Offering Period shall be the lower of:  (i) 85% of the fair market value of a
share of the Common Stock of the Company on the Enrollment Date; or (ii) 85% of
the fair market value of a share of the Common Stock of the Company on the
Exercise Date.  The fair market value of the Company's Common Stock on a given
date shall be determined by the Board in its discretion; provided, however, that
where there is a public market for the Common Stock, the fair market value per
share shall be the closing sale price of the Common Stock for such date, as
reported by the Nasdaq National Market, or, in the event the Common Stock is
listed on a stock exchange, the fair market value per share shall be the closing
price on such exchange on such date, as reported in the Wall Street Journal.

     8.  Exercise of Option.  Unless a participant withdraws from the Plan as
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provided in paragraph 10 below, his or her option for the purchase of shares
will be exercised automatically on the Exercise Date, and the maximum number of
full shares subject to option shall be purchased for such participant at the
applicable option price with the accumulated payroll deductions in his or her
account.  No fractional shares will be purchased and any payroll deductions
accumulated in a participant's account which are not sufficient to purchase a
full share shall be retained in the participant's account for the subsequent
Offering Period, as the Board or its committee shall determine, subject to an
earlier withdrawal by the participant as provided in paragraph 10.  Any other
monies left over in a participant's account after an Exercise Date shall be
refunded to the participant.  During a participant's lifetime, a participant's
option to purchase shares hereunder is exercisable only by him or her.

     9.  Delivery.  As promptly as practicable after each Exercise Date on which
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a purchase of shares occurs, the Company shall arrange the delivery to each
participant, as appropriate, of a certificate representing the shares purchased
upon exercise of his or her option.

     10.  Withdrawal; Termination of Employment.
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          (a) A participant may withdraw all but not less than all the payroll
deductions credited to his or her account and not yet used to exercise his or
her option under the Plan at any time by withdrawing through the Genie Human
Resources Information Access and Processing System or by giving written notice
to the Company.  All of the participant's payroll deductions credited to his or
her account will be paid to such participant promptly after receipt of notice of
withdrawal and such participant's option for the Offering Period will be
automatically terminated, and no further payroll deductions for the purchase of
shares will be made during the Offering Period.  If a participant withdraws from
an Offering Period, payroll deductions will not resume at the beginning of the
succeeding Offering Period unless the participant delivers to the Company a new
subscription agreement.
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          (b) Except as otherwise provided below, upon a participant's ceasing
to be an Employee for any reason or upon termination of a participant's
employment relationship (as described in Section 2(g)), the payroll deductions
credited to such participant's account during the Offering Period but not yet
used to exercise the option will be returned to such participant or, in the case
of his or her death, to the person or persons entitled thereto under paragraph
14, and such participant's option will be automatically terminated.  In the
event a participant's employment terminates by reason of death within three (3)
months of an Exercise Date, the payroll deductions credited to the participant's
account during the Offering Period up to the date of death, but not yet used to
exercise the option, will be held in the participant's account and the maximum
number of full shares subject to such option shall be purchased for the
participant's account on the Exercise Date at the applicable option price.  The
shares purchased for the participant will be issued to the person or persons
entitled thereto under Section 14.

          (c) In the event an Employee fails to remain an Employee of the
Company for at least twenty (20) hours per week during an Offering Period in
which the Employee is a participant, he or she will be deemed to have elected to
withdraw from the Plan and the payroll deductions credited to his or her account
will be returned to such participant and such participant's option terminated.

          (d) A participant's withdrawal from an Offering Period will not have
any effect upon his or her eligibility to participate in any similar plan which
may hereafter be adopted by the Company or in succeeding Offering Periods which
commence after the termination of the Offering Period from which the participant
withdraws.

     11.  Interest.  No interest shall accrue on the payroll deductions of a
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participant in the Plan.

     12.  Stock.
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          (a) The maximum number of shares of the Company's Common Stock which
shall be made available for sale under the Plan shall be 6,000,000 shares,
subject to adjustment upon changes in capitalization of the Company as provided
in paragraph 18.  If on a given Exercise Date the number of shares with respect
to which options are to be exercised exceeds the number of shares then available
under the Plan, the Company shall make a pro rata allocation of the shares
remaining available for purchase in as uniform a manner as shall be practicable
and as it shall determine to be equitable.

          (b) The participant will have no interest or voting right in shares
covered by his option until such option has been exercised.

          (c) Shares to be delivered to a participant under the Plan will be
registered in the name of the participant or in the name of the participant and
his or her spouse.

     13.  Administration.  The Plan shall be administered by the Board of the
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Company or a committee of members of the Board appointed by the Board.  The
Board or its committee shall have full and exclusive discretionary authority to
construe, interpret and apply the terms of the Plan, to determine eligibility
and to adjudicate all disputed claims filed under the Plan.  Every finding,
decision and determination made by the Board or its committee shall, to the full
extent permitted by law, be final and binding upon all parties.  Members of the
Board who are eligible Employees are permitted to participate in the Plan,
provided that:
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          (a) Members of the Board who are eligible to participate in the Plan
may not vote on any matter affecting the administration of the Plan or the grant
of any option pursuant to the Plan.

          (b) If a Committee is established to administer the Plan, no member of
the Board who is eligible to participate in the Plan may be a member of the
Committee.

     14.  Designation of Beneficiary.
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          (a) A participant may designate a beneficiary through the Genie Human
Resources Information Access and Processing System or by giving written notice
to the Company.  Such beneficiary will receive any shares and cash, if any, from
the participant's account under the Plan in the event of such participant's
death within three (3) months of, or subsequent to, an Exercise Date on which
the option is exercised but prior to delivery to such participant of such shares
and cash.  In addition, a participant may file a written designation of a
beneficiary who is to receive any shares and/or cash from the participant's
account under the Plan in the event of such participant's death prior to
exercise of the option.

          (b) Such designation of beneficiary may be changed by the participant
at any time by written notice.  In the event of the death of a participant and
in the absence of a beneficiary validly designated under the Plan who is living
at the time of such participant's death, the Company shall deliver such shares
and/or cash to the executor or administrator of the estate of the participant,
or if no such executor or administrator has been appointed (to the knowledge of
the Company), the Company, in its discretion, may deliver such shares and/or
cash to the spouse or to any one or more dependents or relatives of the
participant, or if no spouse, dependent or relative is known to the Company,
then to such other person as the Company may designate.

     15.  Transferability.  Neither payroll deductions credited to a
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participant's account nor any rights with regard to the exercise of an option or
to receive shares under the Plan may be assigned, transferred, pledged or
otherwise disposed of in any way (other than by will, the laws of descent and
distribution or as provided in paragraph 14 hereof) by the participant.  Any
such attempt at assignment, transfer, pledge or other disposition shall be
without effect, except that the Company may treat such act as an election to
withdraw funds from an Offering Period in accordance with paragraph 10.

     16.  Use of Funds.  All payroll deductions received or held by the Company
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under the Plan may be used by the Company for any corporate purpose, and the
Company shall not be obligated to segregate such payroll deductions.

     17.  Reports.  Individual accounts will be maintained for each participant
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in the Plan.  Statements of account will be given to participating Employees at
least semi-annually, which statements will set forth the amounts of payroll
deductions, the per share purchase price, the number of shares purchased and the
remaining cash balance, if any.

     18.  Adjustments Upon Changes in Capitalization.  Subject to any required
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action by the shareholders of the Company, the Reserves as well as the price per
share of Common Stock covered by each option under the Plan which has not yet
been exercised, shall be proportionately adjusted for any increase or decrease
in the number of issued shares of Common Stock resulting from a stock split,
reverse stock split, stock dividend, combination or reclassification of the
Common Stock, or any other increase or decrease in the number of shares of
Common Stock effected without receipt of consideration by the Company; provided,
however, that conversion of any convertible securities of the Company shall not
be deemed to have been "effected without receipt of consideration."  Such
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adjustment shall be made by the Board, whose determination in that respect shall
be final, binding and conclusive.  Except as expressly provided herein, no issue
by the Company of shares of stock of any class, or securities convertible into
shares of stock of any class, shall affect, and no adjustment by reason thereof
shall be made with respect to, the number or price of shares of Common Stock
subject to an option.

          In the event of the proposed dissolution or liquidation of the
Company, the Offering Period will terminate immediately prior to the
consummation of such proposed action, unless otherwise provided by the Board.
In the event of a proposed sale of all or substantially all of the assets of the
Company, or the merger of the Company with or into another corporation, each
option under the Plan shall be assumed or an equivalent option shall be
substituted by such successor corporation or a parent or subsidiary of such
successor corporation, unless the Board determines, in the exercise of its sole
discretion and in lieu of such assumption or substitution, to shorten the
Offering Period then in progress by setting a new Exercise Date (the "New
Exercise Date").  If the Board shortens the Offering Period then in progress in
lieu of assumption or substitution in the event of a merger or sale of assets,
the Board shall notify each participant in writing, at least ten (10) days prior
to the New Exercise Date, that the Exercise Date for his option has been changed
to the New Exercise Date and that his option will be exercised automatically on
the New Exercise Date, unless prior to such date he has withdrawn from the
Offering Period as provided in paragraph 10.  For purposes of this paragraph, an
option granted under the Plan shall be deemed to be assumed if, following the
sale of assets or merger, the option confers the right to purchase, for each
share of option stock subject to the option immediately prior to the sale of
assets or merger, the consideration (whether stock, cash or other securities or
property) received in the sale of assets or merger by holders of Common Stock
for each share of Common Stock held on the effective date of the transaction
(and if such holders were offered a choice of consideration, the type of
consideration chosen by the holders of a majority of the outstanding shares of
Common Stock); provided, however, that if such consideration received in the
sale of assets or merger was not solely common stock of the successor
corporation or its parent (as defined in Section 424(e) of the Code), the Board
may, with the consent of the successor corporation and the participant, provide
for the consideration to be received upon exercise of the option to be solely
common stock of the successor corporation or its parent equal in fair market
value to the per share consideration received by holders of Common Stock and the
sale of assets or merger.

          The Board may, if it so determines in the exercise of its sole
discretion, also make provision for adjusting the Reserves, as well as the price
per share of Common Stock covered by each outstanding option, in the event the
Company effects one or more reorganizations, recapitalizations, rights offerings
or other increases or reductions of shares of its outstanding Common Stock, and
in the event of the Company being consolidated with or merged into any other
corporation.

     19.  Amendment or Termination.
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          (a) The Board of Directors of the Company may at any time and for any
reason terminate or amend the Plan.  Except as provided in paragraph 18, no such
termination can affect options previously granted, provided that an Offering
Period may be terminated by the Board of Directors on an Exercise Date or by the
Board's setting a new Exercise Date with respect to an Offering Period then in
progress if the Board determines that the termination of the Plan and/or the
Offering Period is in the best interests of the Company and its shareholders or
if continuation of the Plan and/or the Offering Period would cause the Company
to incur adverse accounting charges as a result of a change in the generally
accepted accounting principles applicable to the Plan.  Except as provided in
paragraph 18 and this paragraph 19, no amendment may make any change in any
option
<PAGE>

theretofore granted which adversely affects the rights of any participant. To
the extent necessary to comply with Rule 16b-3 under the Securities Exchange Act
of 1934, as amended, or under Section 423 of the Code (or any successor rule or
provision or any other applicable law or regulation), the Company shall obtain
shareholder approval in such a manner and to such a degree as required.

          (b) Without shareholder consent and without regard to whether any
participant rights may be considered to have been "adversely affected," the
Board (or its committee) shall be entitled to change the Offering Periods, limit
the frequency and/or number of changes in the amount withheld during an Offering
Period, establish the exchange ratio applicable to amounts withheld in a
currency other than U.S. dollars, permit payroll withholding in excess of the
amount designated by a participant in order to adjust for delays or mistakes in
the Company's processing of properly completed withholding elections, establish
reasonable waiting and adjustment periods and/or accounting and crediting
procedures to ensure that amounts applied toward the purchase of Common Stock
for each participant properly correspond with amounts withheld from the
participant's Compensation, and establish such other limitations or procedures
as the Board (or its committee) determines in its sole discretion advisable
which are consistent with the Plan.

     20.  Notices.  All notices or other communications by a participant to the
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Company under or in connection with the Plan shall be deemed to have been duly
given when received in the form specified by the Company at the location, or by
the person, designated by the Company for the receipt thereof.

     21.  Conditions Upon Issuance of Shares.  Shares shall not be issued with
          ----------------------------------
respect to an option unless the exercise of such option and the issuance and
delivery of such shares pursuant thereto shall comply with all applicable
provisions of law, domestic or foreign, including, without limitation, the
Securities Act of 1933, as amended, the Securities Exchange Act of 1934, as
amended, the rules and regulations promulgated thereunder, and the requirements
of any stock exchange upon which the shares may then be listed, and shall be
further subject to the approval of counsel for the Company with respect to such
compliance.

          As a condition to the exercise of an option, the Company may require
the person exercising such option to represent and warrant at the time of any
such exercise that the shares are being purchased only for investment and
without any present intention to sell or distribute such shares if, in the
opinion of counsel for the Company, such a representation is required by any of
the aforementioned applicable provisions of law.

     22.  Term of Plan.  The Plan shall become effective upon the earlier to
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occur of its adoption by the Board of Directors or its approval by the
shareholders of the Company.  It shall continue in effect for a term of twenty
(20) years unless sooner terminated under paragraph 19.