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                                   EXHIBIT 4.1

                                BROOKTROUT, INC.
                      2001 STOCK OPTION AND INCENTIVE PLAN

SECTION 1.        GENERAL PURPOSE OF THE PLAN; DEFINITIONS

         The name of the plan is the Brooktrout, Inc. 2001 Stock Option and
Incentive Plan (the "Plan"). The purpose of the Plan is to encourage and enable
the officers, employees, Independent Directors and other key persons (including
consultants and prospective employees) of Brooktrout, Inc. (the "Company") and
its Subsidiaries upon whose judgment, initiative and efforts the Company largely
depends for the successful conduct of its business to acquire a proprietary
interest in the Company. It is anticipated that providing such persons with a
direct stake in the Company's welfare will assure a closer identification of
their interests with those of the Company, thereby stimulating their efforts on
the Company's behalf and strengthening their desire to remain with the Company.

         The following terms shall be defined as set forth below:

         "ACT" means the Securities Act of 1933, as amended, and the rules and
regulations thereunder.

         "ADMINISTRATOR" is defined in Section 2(a).

         "AWARD" or "AWARDS," except where referring to a particular category of
grant under the Plan, shall include Incentive Stock Options, Non-Qualified Stock
Options, Deferred Stock Awards, Restricted Stock Awards, Unrestricted Stock
Awards and Performance Share Awards.

         "BOARD" means the Board of Directors of the Company.

         "CODE" means the Internal Revenue Code of 1986, as amended, and any
successor Code, and related rules, regulations and interpretations.

         "COMMITTEE" means the Committee of the Board referred to in Section 2.

         "COVERED EMPLOYEE" means an employee who is a "Covered Employee" within
the meaning of Section 162(m) of the Code.

         "DEFERRED STOCK AWARD" means Awards granted pursuant to Section 7.

         "EFFECTIVE DATE" means the date on which the Plan is approved by
stockholders as set forth in Section 16.

         "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended,
and the rules and regulations thereunder.

         "FAIR MARKET VALUE" of the Stock on any given date means the fair
market value of the Stock determined in good faith by the Administrator;
provided, however, that if the Stock is admitted to quotation on the National
Association of Securities Dealers Automated Quotation System ("Nasdaq") National
Market or a national securities exchange, the determination shall be made by
reference to market quotations. If there are no market quotations for such date,
the determination shall be made by reference to the last date preceding such
date for which there are market quotations.

         "INCENTIVE STOCK OPTION" means any Stock Option designated and
qualified as an "incentive stock option" as defined in Section 422 of the Code.

         "INDEPENDENT DIRECTOR" means a member of the Board who is not also an
employee of the Company or any Subsidiary.

         "NON-QUALIFIED STOCK OPTION" means any Stock Option that is not an
Incentive Stock Option.

         "OPTION" or "STOCK OPTION" means any option to purchase shares of Stock
granted pursuant to Section 5.

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         "PERFORMANCE SHARE AWARD" means Awards granted pursuant to Section 9.

         "PERFORMANCE CYCLE" means one or more periods of time, which may be of
varying and overlapping durations, as the Administrator may select, over which
the attainment of one or more performance criteria will be measured for the
purpose of determining a grantee's right to and the payment of a Performance
Share Award, Restricted Stock Award or Deferred Stock Award.

         "RESTRICTED STOCK AWARD" means Awards granted pursuant to Section 6.

         "STOCK" means the Common Stock, par value $.01 per share, of the
Company, subject to adjustments pursuant to Section 3.

         "SUBSIDIARY" means any corporation or other entity (other than the
Company) in any unbroken chain of corporations or other entities beginning with
the Company if each of the corporations or entities (other than the last
corporation or entity in the unbroken chain) owns stock or other interests
possessing 50 percent or more of the economic interest or the total combined
voting power of all classes of stock or other interests in one of the other
corporations or entities in the chain.

         "UNRESTRICTED STOCK AWARD" means any Award granted pursuant to Section
8.

SECTION 2. ADMINISTRATION OF PLAN; ADMINISTRATOR AUTHORITY TO SELECT GRANTEES
           AND DETERMINE AWARDS

         (a) COMMITTEE. The Plan shall be administered by either the Board or a
committee of not less than two Independent Directors (in either case, the
"Administrator").

         (b) POWERS OF ADMINISTRATOR. The Administrator shall have the power and
authority to grant Awards consistent with the terms of the Plan, including the
power and authority:

                  (i) to select the individuals to whom Awards may from time to
time be granted;

                  (ii) to determine the time or times of grant, and the extent,
if any, of Incentive Stock Options, Non-Qualified Stock Options, Restricted
Stock Awards, Deferred Stock Awards, Unrestricted Stock Awards and Performance
Share Awards, or any combination of the foregoing, granted to any one or more
grantees;

                  (iii) to determine the number of shares of Stock to be covered
by any Award;

                  (iv) to determine and modify from time to time the terms and
conditions, including restrictions, not inconsistent with the terms of the Plan,
of any Award, which terms and conditions may differ among individual Awards and
grantees, and to approve the form of written instruments evidencing the Awards;

                  (v) to accelerate at any time the exercisability or vesting of
all or any portion of any Award;

                  (vi) subject to the provisions of Section 5(a)(ii), to extend
at any time the period in which Stock Options may be exercised;

                  (vii) to determine at any time whether, to what extent, and
under what circumstances distribution or the receipt of Stock and other amounts
payable with respect to an Award shall be deferred either automatically or at
the election of the grantee and whether and to what extent the Company shall pay
or credit amounts constituting interest (at rates determined by the
Administrator) or dividends or deemed dividends on such deferrals; and

                  (viii) at any time to adopt, alter and repeal such rules,
guidelines and practices for administration of the Plan and for its own acts and
proceedings as it shall deem advisable; to interpret the terms and provisions of
the Plan and any Award (including related written instruments); to make all
determinations it deems advisable for the administration of the Plan; to decide
all disputes arising in connection with the Plan; and to otherwise supervise the
administration of the Plan.

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         All decisions and interpretations of the Administrator shall be binding
on all persons, including the Company and Plan grantees.

         (c) DELEGATION OF AUTHORITY TO GRANT AWARDS. The Administrator, in its
discretion, may delegate to the Chief Executive Officer of the Company all or
part of the Administrator's authority and duties with respect to the granting of
Awards at Fair Market Value, to individuals who are not subject to the reporting
and other provisions of Section 16 of the Exchange Act or "covered employees"
within the meaning of Section 162(m) of the Code. Any such delegation by the
Administrator shall include a limitation as to the amount of Awards that may be
granted during the period of the delegation and shall contain guidelines as to
the determination of the exercise price of any Stock Option, the conversion
ratio or price of other Awards and the vesting criteria. The Administrator may
revoke or amend the terms of a delegation at any time but such action shall not
invalidate any prior actions of the Administrator's delegate or delegates that
were consistent with the terms of the Plan.

         (d) INDEMNIFICATION. Neither the Board nor the Committee, nor any
member of either or any delegatee thereof, shall be liable for any act,
omission, interpretation, construction or determination made in good faith in
connection with the Plan, and the members of the Board and the Committee (and
any delegatee thereof) shall be entitled in all cases to indemnification and
reimbursement by the Company in respect of any claim, loss, damage or expense
(including, without limitation, reasonable attorneys' fees) arising or resulting
therefrom to the fullest extent permitted by law and/or under any directors' and
officers' liability insurance coverage which may be in effect from time to time.

SECTION 3. STOCK ISSUABLE UNDER THE PLAN; MERGERS; SUBSTITUTION

         (a) STOCK ISSUABLE. The maximum number of shares of Stock reserved and
available for issuance under the Plan shall be 1,500,000 shares, subject to
adjustment as provided in Section 3(b). For purposes of this limitation, the
shares of Stock underlying any Awards which are forfeited, canceled, reacquired
by the Company, satisfied without the issuance of Stock or otherwise terminated
(other than by exercise) shall be added back to the shares of Stock available
for issuance under the Plan. Subject to such overall limitation, shares of Stock
may be issued up to such maximum number pursuant to any type or types of Award;
provided, however, that Stock Options with respect to no more than 250,000
shares of Stock may be granted to any one individual grantee during any one
calendar year period. The shares available for issuance under the Plan may be
authorized but unissued shares of Stock or shares of Stock reacquired by the
Company and held in its treasury.

         (b) CHANGES IN STOCK. Subject to Section 3(c) hereof, if, as a result
of any reorganization, recapitalization, reclassification, stock dividend, stock
split, reverse stock split or other similar change in the Company's capital
stock, the outstanding shares of Stock are increased or decreased or are
exchanged for a different number or kind of shares or other securities of the
Company, or additional shares or new or different shares or other securities of
the Company or other non-cash assets are distributed with respect to such shares
of Stock or other securities, or, if, as a result of any merger or
consolidation, sale of all or substantially all of the assets of the Company,
the outstanding shares of Stock are converted into or exchanged for a different
number or kind of securities of the Company or any successor entity (or a parent
or subsidiary thereof), the Administrator shall make an appropriate or
proportionate adjustment in (i) the maximum number of shares reserved for
issuance under the Plan, (ii) the number of Stock Options that can be granted to
any one individual grantee and the maximum number of shares that may be granted
under a Performance-based Award, (iii) the number and kind of shares or other
securities subject to any then outstanding Awards under the Plan, (iv) the
repurchase price per share subject to each outstanding Restricted Stock Award,
and (v) the price for each share subject to any then outstanding Stock Options
under the Plan, without changing the aggregate exercise price (i.e., the
exercise price multiplied by the number of Stock Options) as to which such Stock
Options remain exercisable. The adjustment by the Administrator shall be final,
binding and conclusive. No fractional shares of Stock shall be issued under the
Plan resulting from any such adjustment, but the Administrator in its discretion
may make a cash payment in lieu of fractional shares.

         The Administrator may also adjust the number of shares subject to
outstanding Awards and the exercise price and the terms of outstanding Awards to
take into consideration material changes in accounting practices or principles,
extraordinary dividends, acquisitions or dispositions of stock or property or
any other event if it is determined by the Administrator that such adjustment is
appropriate to avoid distortion in the operation of the Plan, provided that no
such adjustment shall be made in the case of an Incentive Stock Option, without
the consent of the grantee, if it would constitute a modification, extension or
renewal of the Option within the meaning of Section 424(h) of the Code.

         (c) MERGERS AND OTHER TRANSACTIONS. In the case of and subject to the
consummation of (i) the dissolution or liquidation of the Company, (ii) the sale
of all or substantially all of the assets of the Company on a consolidated basis
to an

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unrelated person or entity, (iii) a merger, reorganization or consolidation in
which the outstanding shares of Stock are converted into or exchanged for a
different kind of securities of the successor entity and the holders of the
Company's outstanding voting power immediately prior to such transaction do not
own a majority of the outstanding voting power of the successor entity
immediately upon completion of such transaction, or (iv) the sale of all of the
Stock of the Company to an unrelated person or entity (in each case, a "Sale
Event"), the Plan and all outstanding Awards granted hereunder shall terminate,
unless provision is made in connection with the Sale Event in the sole
discretion of the parties thereto for the assumption or continuation of Awards
theretofore granted by the successor entity, or the substitution of such Awards
with new Awards of the successor entity or parent thereof, with appropriate
adjustment as to the number and kind of shares and, if appropriate, the per
share exercise prices, as such parties shall agree (after taking into account
any acceleration hereunder). In the event of such termination, each grantee
shall be permitted, within a specified period of time prior to the consummation
of the Sale Event as determined by the Administrator, to exercise all
outstanding Options held by such grantee, including those that will become
exercisable upon the consummation of the Sale Event; provided, however, that the
exercise of Options not exercisable prior to the Sale Event shall be subject to
the consummation of the Sale Event.

         Notwithstanding anything to the contrary in this Section 3(c), in the
event of a Sale Event pursuant to which holders of the Stock of the Company will
receive upon consummation thereof a cash payment for each share surrendered in
the Sale Event, the Company shall have the right, but not the obligation, to
make or provide for a cash payment to the grantees holding Options, in exchange
for the cancellation thereof, in an amount equal to the difference between (A)
the value as determined by the Administrator of the consideration payable per
share of Stock pursuant to the Sale Event (the "Sale Price") times the number of
shares of Stock subject to outstanding Options (to the extent then exercisable
at prices not in excess of the Sale Price) and (B) the aggregate exercise price
of all such outstanding Options.

         (d) SUBSTITUTE AWARDS. The Administrator may grant Awards under the
Plan in substitution for stock and stock based awards held by employees,
directors or other key persons of another corporation in connection with the
merger or consolidation of the employing corporation with the Company or a
Subsidiary or the acquisition by the Company or a Subsidiary of property or
stock of the employing corporation. The Administrator may direct that the
substitute awards be granted on such terms and conditions as the Administrator
considers appropriate in the circumstances. Any substitute Awards granted under
the Plan shall not count against the share limitation set forth in Section 3(a).

SECTION 4. ELIGIBILITY

         Grantees under the Plan will be such full or part-time officers and
other employees, Independent Directors and other key persons (including
consultants and prospective employees) of the Company and its Subsidiaries as
are selected from time to time by the Administrator in its sole discretion.

SECTION 5. STOCK OPTIONS

         Any Stock Option granted under the Plan shall be in such form as the
Administrator may from time to time approve.

         Stock Options granted under the Plan may be either Incentive Stock
Options or Non-Qualified Stock Options. Incentive Stock Options may be granted
only to employees of the Company or any Subsidiary that is a "subsidiary
corporation" within the meaning of Section 424(f) of the Code. To the extent
that any Option does not qualify as an Incentive Stock Option, it shall be
deemed a Non-Qualified Stock Option.

         No Incentive Stock Option shall be granted under the Plan after May 10,
2011.

         (a) STOCK OPTIONS GRANTED TO EMPLOYEES AND KEY PERSONS. The
Administrator in its discretion may grant Stock Options to eligible employees
and key persons of the Company or any Subsidiary. Stock Options granted pursuant
to this Section 5(a) shall be subject to the following terms and conditions and
shall contain such additional terms and conditions, not inconsistent with the
terms of the Plan, as the Administrator shall deem desirable.

                  (i) EXERCISE PRICE. The exercise price per share for the Stock
covered by a Stock Option granted pursuant to this Section 5(a) shall be
determined by the Administrator at the time of grant but shall not be less than
100 percent of the Fair Market Value on the date of grant in the case of
Incentive Stock Options, or 85 percent of the Fair Market Value on the date of
grant, in the case of Non-Qualified Stock Options. If an employee owns or is
deemed to own (by reason of the attribution rules of Section 424(d) of the Code)
more than 10 percent of the combined voting power of all classes of stock of the

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Company or any parent or subsidiary corporation and an Incentive Stock Option is
granted to such employee, the option price of such Incentive Stock Option shall
be not less than 110 percent of the Fair Market Value on the grant date.

                  (ii) OPTION TERM. The term of each Stock Option shall be fixed
by the Administrator, but no Stock Option shall be exercisable more than 10
years after the date the Stock Option is granted. If an employee owns or is
deemed to own (by reason of the attribution rules of Section 424(d) of the Code)
more than 10 percent of the combined voting power of all classes of stock of the
Company or any parent or subsidiary corporation and an Incentive Stock Option is
granted to such employee, the term of such Stock Option shall be no more than
five years from the date of grant.

                  (iii) EXERCISABILITY; RIGHTS OF A STOCKHOLDER. Stock Options
shall become exercisable at such time or times, whether or not in installments,
as shall be determined by the Administrator at or after the grant date. The
Administrator may at any time accelerate the exercisability of all or any
portion of any Stock Option. An optionee shall have the rights of a stockholder
only as to shares acquired upon the exercise of a Stock Option and not as to
unexercised Stock Options.

                  (iv) METHOD OF EXERCISE. Stock Options may be exercised in
whole or in part, by giving written notice of exercise to the Company,
specifying the number of shares to be purchased. Payment of the purchase price
may be made by one or more of the following methods to the extent provided in
the Option Award agreement:

                           (A) In cash, by certified or bank check or other
                  instrument acceptable to the Administrator;

                           (B) Through the delivery (or attestation to the
                  ownership) of shares of Stock that have been purchased by the
                  optionee on the open market or that have been beneficially
                  owned by the optionee for at least six months and are not then
                  subject to restrictions under any Company plan. Such
                  surrendered shares shall be valued at Fair Market Value on the
                  exercise date;

                           (C) By the optionee delivering to the Company a
                  properly executed exercise notice together with irrevocable
                  instructions to a broker to promptly deliver to the Company
                  cash or a check payable and acceptable to the Company for the
                  purchase price; provided that in the event the optionee
                  chooses to pay the purchase price as so provided, the optionee
                  and the broker shall comply with such procedures and enter
                  into such agreements of indemnity and other agreements as the
                  Administrator shall prescribe as a condition of such payment
                  procedure; or

                           (D) By the optionee delivering to the Company a
                  promissory note if the Board has expressly authorized the loan
                  of funds to the optionee for the purpose of enabling or
                  assisting the optionee to effect the exercise of his Stock
                  Option; provided that at least so much of the exercise price
                  as represents the par value of the Stock shall be paid other
                  than with a promissory note if otherwise required by state
                  law.

Payment instruments will be received subject to collection. The delivery of
certificates representing the shares of Stock to be purchased pursuant to the
exercise of a Stock Option will be contingent upon receipt from the optionee (or
a purchaser acting in his stead in accordance with the provisions of the Stock
Option) by the Company of the full purchase price for such shares and the
fulfillment of any other requirements contained in the Option Award agreement or
applicable provisions of laws. In the event an optionee chooses to pay the
purchase price by previously owned shares of Stock through the attestation
method, the number of shares of Stock transferred to the optionee upon the
exercise of the Stock Option shall be net of the number of shares attested to.

                  (v) ANNUAL LIMIT ON INCENTIVE STOCK OPTIONS. To the extent
required for "incentive stock option" treatment under Section 422 of the Code,
the aggregate Fair Market Value (determined as of the time of grant) of the
shares of Stock with respect to which Incentive Stock Options granted under this
Plan and any other plan of the Company or its parent and subsidiary corporations
become exercisable for the first time by an optionee during any calendar year
shall not exceed $100,000. To the extent that any Stock Option exceeds this
limit, it shall constitute a Non-Qualified Stock Option.

         (b) RELOAD OPTIONS. At the discretion of the Administrator, Options
granted under the Plan may include a "reload" feature pursuant to which an
optionee exercising an option by the delivery of a number of shares of Stock in
accordance with Section 5(a)(iv)(B) hereof would automatically be granted an
additional Option (with an exercise price equal to the Fair Market Value of the
Stock on the date the additional Option is granted and with such other terms as
the Administrator may provide) to purchase that number of shares of Stock equal
to the sum of (i) the number delivered to exercise the original Option and (ii)
the

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number withheld to satisfy tax liabilities, with an Option term equal to the
remainder of the original Option term unless the Administrator otherwise
determines in the Award agreement for the original Option grant.

         (c)      STOCK OPTIONS GRANTED TO INDEPENDENT DIRECTORS.

                  (i)      GRANT OF OPTIONS.  The Administrator, in its
discretion, may grant Non-Qualified Stock Options to Independent Directors. Any
such grant may vary among individual Independent Directors.

                  (ii)     EXERCISE; TERMINATION.

                           (A) Unless otherwise determined by the Administrator,
         an Option granted under Section 5(c) shall be exercisable in full as of
         the grant date. An Option issued under this Section 5(c) shall not be
         exercisable after the expiration of ten years from the date of grant.

                           (B) Options granted under this Section 5(c) may be
         exercised only by written notice to the Company specifying the number
         of shares to be purchased. Payment of the full purchase price of the
         shares to be purchased may be made by one or more of the methods
         specified in Section 5(a)(iv). An optionee shall have the rights of a
         stockholder only as to shares acquired upon the exercise of a Stock
         Option and not as to unexercised Stock Options.

         (d) NON-TRANSFERABILITY OF OPTIONS. No Stock Option shall be
transferable by the optionee otherwise than by will or by the laws of descent
and distribution and all Stock Options shall be exercisable, during the
optionee's lifetime, only by the optionee, or by the optionee's legal
representative or guardian in the event of the optionee's incapacity.
Notwithstanding the foregoing, the Administrator, in its sole discretion, may
provide in the Award agreement regarding a given Option that the optionee may
transfer his Non-Qualified Stock Options to members of his immediate family, to
trusts for the benefit of such family members, or to partnerships in which such
family members are the only partners, provided that the transferee agrees in
writing with the Company to be bound by all of the terms and conditions of this
Plan and the applicable Option.

SECTION 6. RESTRICTED STOCK AWARDS

         (a) NATURE OF RESTRICTED STOCK AWARDS. A Restricted Stock Award is an
Award entitling the recipient to acquire, at such purchase price as determined
by the Administrator, shares of Stock subject to such restrictions and
conditions as the Administrator may determine at the time of grant ("Restricted
Stock"). Conditions may be based on continuing employment (or other service
relationship) and/or achievement of pre-established performance goals and
objectives. The grant of a Restricted Stock Award is contingent on the grantee
executing the Restricted Stock Award agreement. The terms and conditions of each
such agreement shall be determined by the Administrator, and such terms and
conditions may differ among individual Awards and grantees.

         (b) RIGHTS AS A STOCKHOLDER. Upon execution of a written instrument
setting forth the Restricted Stock Award and payment of any applicable purchase
price, a grantee shall have the rights of a stockholder with respect to the
voting of the Restricted Stock, subject to such conditions contained in the
written instrument evidencing the Restricted Stock Award. Unless the
Administrator shall otherwise determine, certificates evidencing the Restricted
Stock shall remain in the possession of the Company until such Restricted Stock
is vested as provided in Section 6(d) below, and the grantee shall be required,
as a condition of the grant, to deliver to the Company a stock power endorsed in
blank.

         (c) RESTRICTIONS. Restricted Stock may not be sold, assigned,
transferred, pledged or otherwise encumbered or disposed of except as
specifically provided herein or in the Restricted Stock Award agreement. If a
grantee's employment (or other service relationship) with the Company and its
Subsidiaries terminates for any reason, the Company shall have the right to
repurchase Restricted Stock that has not vested at the time of termination at
its original purchase price, from the grantee or the grantee's legal
representative.

         (d) VESTING OF RESTRICTED STOCK. The Administrator at the time of grant
shall specify the date or dates and/or the attainment of pre-established
performance goals, objectives and other conditions on which the
non-transferability of the Restricted Stock and the Company's right of
repurchase or forfeiture shall lapse. Subsequent to such date or dates and/or
the attainment of such pre-established performance goals, objectives and other
conditions, the shares on which all restrictions have lapsed shall no longer be
Restricted Stock and shall be deemed "vested." Except as may otherwise be
provided by the

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Administrator either in the Award agreement or, subject to Section 13 below, in
writing after the Award agreement is issued, a grantee's rights in any shares of
Restricted Stock that have not vested shall automatically terminate upon the
grantee's termination of employment (or other service relationship) with the
Company and its Subsidiaries and such shares shall be subject to the Company's
right of repurchase as provided in Section 6(c) above.

         (e) WAIVER, DEFERRAL AND REINVESTMENT OF DIVIDENDS. The Restricted
Stock Award agreement may require or permit the immediate payment, waiver,
deferral or investment of dividends paid on the Restricted Stock.

SECTION 7. DEFERRED STOCK AWARDS

         (a) NATURE OF DEFERRED STOCK AWARDS. A Deferred Stock Award is an Award
of phantom stock units to a grantee, subject to restrictions and conditions as
the Administrator may determine at the time of grant. Conditions may be based on
continuing employment (or other service relationship) and/or achievement of
pre-established performance goals and objectives. The grant of a Deferred Stock
Award is contingent on the grantee executing the Deferred Stock Award agreement.
The terms and conditions of each such agreement shall be determined by the
Administrator, and such terms and conditions may differ among individual Awards
and grantees. At the end of the deferral period, the Deferred Stock Award, to
the extent vested, shall be paid to the grantee in the form of shares of Stock.

         (b) ELECTION TO RECEIVE DEFERRED STOCK AWARDS IN LIEU OF COMPENSATION.
The Administrator may, in its sole discretion, permit a grantee to elect to
receive a portion of the cash compensation or Restricted Stock Award otherwise
due to such grantee in the form of a Deferred Stock Award. Any such election
shall be made in writing and shall be delivered to the Company no later than the
date specified by the Administrator and in accordance with rules and procedures
established by the Administrator. The Administrator shall have the sole right to
determine whether and under what circumstances to permit such elections and to
impose such limitations and other terms and conditions thereon as the
Administrator deems appropriate.

         (c) RIGHTS AS A STOCKHOLDER. During the deferral period, a grantee
shall have no rights as a stockholder; provided, however, that the grantee may
be credited with Dividend Equivalent Rights with respect to the phantom stock
units underlying his Deferred Stock Award, subject to such terms and conditions
as the Administrator may determine.

         (d) RESTRICTIONS. A Deferred Stock Award may not be sold, assigned,
transferred, pledged or otherwise encumbered or disposed of during the deferral
period.

         (e) TERMINATION. Except as may otherwise be provided by the
Administrator either in the Award agreement or, subject to Section 13 below, in
writing after the Award agreement is issued, a grantee's right in all Deferred
Stock Awards that have not vested shall automatically terminate upon the
grantee's termination of employment (or cessation of service relationship) with
the Company and its Subsidiaries for any reason.

SECTION 8. UNRESTRICTED STOCK AWARDS

         (a) GRANT OR SALE OF UNRESTRICTED STOCK. The Administrator may, in its
sole discretion, grant (or sell at par value or such higher purchase price
determined by the Administrator) an Unrestricted Stock Award to any grantee
pursuant to which such grantee may receive shares of Stock free of any
restrictions ("Unrestricted Stock") under the Plan. Unrestricted Stock Awards
may be granted in respect of past services or other valid consideration, or in
lieu of cash compensation due to such grantee.

SECTION 9. PERFORMANCE SHARE AWARDS

         (a) NATURE OF PERFORMANCE SHARE AWARDS. A Performance Share Award is an
Award entitling the recipient to acquire shares of Stock upon the attainment of
specified performance goals. The Administrator may make Performance Share Awards
independent of or in connection with the granting of any other Award under the
Plan. The Administrator in its sole discretion shall determine whether and to
whom Performance Share Awards shall be made, the performance goals, the periods
during which performance is to be measured, and all other limitations and
conditions.

         (b) RIGHTS AS A STOCKHOLDER. A grantee receiving a Performance Share
Award shall have the rights of a stockholder only as to shares actually received
by the grantee under the Plan and not with respect to shares subject to the
Award but not actually received by the grantee. A grantee shall be entitled to
receive a stock certificate evidencing the acquisition of

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shares of Stock under a Performance Share Award only upon satisfaction of all
conditions specified in the Performance Share Award agreement (or in a
performance plan adopted by the Administrator).

         (c) TERMINATION. Except as may otherwise be provided by the
Administrator either in the Award agreement or, subject to Section 13 below, in
writing after the Award agreement is issued, a grantee's rights in all
Performance Share Awards shall automatically terminate upon the grantee's
termination of employment (or cessation of service relationship) with the
Company and its Subsidiaries for any reason.

         (d) ACCELERATION, WAIVER, ETC. At any time prior to the grantee's
termination of employment (or other service relationship) by the Company and its
Subsidiaries, the Administrator may in its sole discretion accelerate, waive or,
subject to Section 13, amend any or all of the goals, restrictions or conditions
applicable to a Performance Share Award.

SECTION 10. PERFORMANCE-BASED AWARDS TO COVERED EMPLOYEES

         Notwithstanding anything to the contrary contained herein, if any
Restricted Stock Award, Deferred Stock Award or Performance Share Award granted
to a Covered Employee is intended to qualify as "Performance-based Compensation"
under Section 162(m) of the Code and the regulations promulgated thereunder (a
"Performance-based Award"), such Award shall comply with the provisions set
forth below:

         (a) PERFORMANCE CRITERIA. The performance criteria used in performance
goals governing Performance-based Awards granted to Covered Employees may
include any or all of the following: (i) the Company's return on equity, assets,
capital or investment, (ii) pre-tax or after-tax profit levels of the Company or
any Subsidiary, a division, an operating unit or a business segment of the
Company, or any combination of the foregoing; (iii) cash flow, funds from
operations or similar measure; (iv) total shareholder return; (v) changes in the
market price of the Stock; (vi) sales or market share; or (vii) earnings per
share.

         (b) GRANT OF PERFORMANCE-BASED AWARDS. With respect to each
Performance-based Award granted to a Covered Employee, the Committee shall
select, within the first 90 days of a Performance Cycle (or, if shorter, within
the maximum period allowed under Section 162(m) of the Code) the performance
criteria for such grant, and the achievement targets with respect to each
performance criterion (including a threshold level of performance below which no
amount will become payable with respect to such Award). Each Performance-based
Award will specify the amount payable, or the formula for determining the amount
payable, upon achievement of the various applicable performance targets. The
performance criteria established by the Committee may be (but need not be)
different for each Performance Cycle and different goals may be applicable to
Performance-based Awards to different Covered Employees.

         (c) PAYMENT OF PERFORMANCE-BASED AWARDS. Following the completion of a
Performance Cycle, the Committee shall meet to review and certify in writing
whether, and to what extent, the performance criteria for the Performance Cycle
have been achieved and, if so, to also calculate and certify in writing the
amount of the Performance-based Awards earned for the Performance Cycle. The
Committee shall then determine the actual size of each Covered Employee's
Performance-based Award, and, in doing so, may reduce or eliminate the amount of
the Performance-based Award for a Covered Employee if, in its sole judgment,
such reduction or elimination is appropriate.

         (d) MAXIMUM AWARD PAYABLE. The maximum Performance-based Award payable
to any one Covered Employee under the Plan for a Performance Cycle is 250,000
Shares (subject to adjustment as provided in Section 3(b) hereof).

SECTION 11. TAX WITHHOLDING

         (a) PAYMENT BY GRANTEE. Each grantee shall, no later than the date as
of which the value of an Award or of any Stock or other amounts received
thereunder first becomes includable in the gross income of the grantee for
Federal income tax purposes, pay to the Company, or make arrangements
satisfactory to the Administrator regarding payment of, any Federal, state, or
local taxes of any kind required by law to be withheld with respect to such
income. The Company and its Subsidiaries shall, to the extent permitted by law,
have the right to deduct any such taxes from any payment of any kind otherwise
due to the grantee. The Company's obligation to deliver stock certificates to
any grantee is subject to and conditioned on tax obligations being satisfied by
the grantee. The Company's obligation to deliver stock certificates to any
grantee is subject to and is conditioned on tax obligations being satisfied by
the grantee.

<PAGE>

         (b) PAYMENT IN STOCK. Subject to approval by the Administrator, a
grantee may elect to have the minimum required tax withholding obligation
satisfied, in whole or in part, by (i) authorizing the Company to withhold from
shares of Stock to be issued pursuant to any Award a number of shares with an
aggregate Fair Market Value (as of the date the withholding is effected) that
would satisfy the withholding amount due, or (ii) transferring to the Company
shares of Stock owned by the grantee with an aggregate Fair Market Value (as of
the date the withholding is effected) that would satisfy the withholding amount
due.

SECTION 12. TRANSFER, LEAVE OF ABSENCE, ETC.

         For purposes of the Plan, the following events shall not be deemed a
termination of employment:

         (a) a transfer to the employment of the Company from a Subsidiary or
from the Company to a Subsidiary, or from one Subsidiary to another; or

         (b) an approved leave of absence for military service or sickness, or
for any other purpose approved by the Company, if the employee's right to
re-employment is guaranteed either by a statute or by contract or under the
policy pursuant to which the leave of absence was granted or if the
Administrator otherwise so provides in writing.

SECTION 13. AMENDMENTS AND TERMINATION

         The Board may, at any time, amend or discontinue the Plan and the
Administrator may, at any time, amend or cancel any outstanding Award for the
purpose of satisfying changes in law or for any other lawful purpose, but no
such action shall adversely affect rights under any outstanding Award without
the holder's consent. If and to the extent determined by the Administrator to be
required by the Code to ensure that Incentive Stock Options granted under the
Plan are qualified under Section 422 of the Code or to ensure that compensation
earned under Awards qualifies as performance-based compensation under Section
162(m) of the Code, if and to the extent intended to so qualify, Plan amendments
shall be subject to approval by the Company stockholders entitled to vote at a
meeting of stockholders. Nothing in this Section 13 shall limit the
Administrator's authority to take any action permitted pursuant to Section 3(c).

SECTION 14. STATUS OF PLAN

         With respect to the portion of any Award that has not been exercised
and any payments in cash, Stock or other consideration not received by a
grantee, a grantee shall have no rights greater than those of a general creditor
of the Company unless the Administrator shall otherwise expressly determine in
connection with any Award or Awards. In its sole discretion, the Administrator
may authorize the creation of trusts or other arrangements to meet the Company's
obligations to deliver Stock or make payments with respect to Awards hereunder,
provided that the existence of such trusts or other arrangements is consistent
with the foregoing sentence.

SECTION 15. GENERAL PROVISIONS

         (a) NO DISTRIBUTION; COMPLIANCE WITH LEGAL REQUIREMENTS. The
Administrator may require each person acquiring Stock pursuant to an Award to
represent to and agree with the Company in writing that such person is acquiring
the shares without a view to distribution thereof.

         No shares of Stock shall be issued pursuant to an Award until all
applicable securities law and other legal and stock exchange or similar
requirements have been satisfied. The Administrator may require the placing of
such stop orders and restrictive legends on certificates for Stock and Awards as
it deems appropriate.

         (b) DELIVERY OF STOCK CERTIFICATES. Stock certificates to grantees
under this Plan shall be deemed delivered for all purposes when the Company or a
stock transfer agent of the Company shall have mailed such certificates in the
United States mail, addressed to the grantee, at the grantee's last known
address on file with the Company.

         (c) OTHER COMPENSATION ARRANGEMENTS; NO EMPLOYMENT RIGHTS. Nothing
contained in this Plan shall prevent the Board from adopting other or additional
compensation arrangements, including trusts, and such arrangements may be either

<PAGE>

generally applicable or applicable only in specific cases. The adoption of this
Plan and the grant of Awards do not confer upon any employee any right to
continued employment with the Company or any Subsidiary.

         (d) TRADING POLICY RESTRICTIONS. Option exercises and other Awards
under the Plan shall be subject to such Company's insider trading policy, as in
effect from time to time.

         (e) LOANS TO GRANTEES. The Company shall have the authority to make
loans to grantees of Awards hereunder (including to facilitate the purchase of
shares) and shall further have the authority to issue shares for promissory
notes hereunder.

         (f) DESIGNATION OF BENEFICIARY. Each grantee to whom an Award has been
made under the Plan may designate a beneficiary or beneficiaries to exercise any
Award or receive any payment under any Award payable on or after the grantee's
death. Any such designation shall be on a form provided for that purpose by the
Administrator and shall not be effective until received by the Administrator. If
no beneficiary has been designated by a deceased grantee, or if the designated
beneficiaries have predeceased the grantee, the beneficiary shall be the
grantee's estate.

SECTION 16. EFFECTIVE DATE OF PLAN

         This Plan shall become effective upon approval by the holders of a
majority of the votes cast at a meeting of stockholders at which a quorum is
present. Subject to such approval by the stockholders and to the requirement
that no Stock may be issued hereunder prior to such approval, Stock Options and
other Awards may be granted hereunder on and after adoption of this Plan by the
Board.

SECTION 17. GOVERNING LAW

         This Plan and all Awards and actions taken thereunder shall be governed
by, and construed in accordance with, the laws of the Commonwealth of
Massachusetts, applied without regard to conflict of law principles.<PAGE>

                                   EXHIBIT 4.2

                                BROOKTROUT, INC.
                           SECOND AMENDED AND RESTATED
                            1992 STOCK PURCHASE PLAN
                  (AMENDED AND RESTATED AS OF JANUARY 1, 2001)

         The purpose of this Plan is to provide eligible employees of
Brooktrout, Inc. (the "Company") with opportunities to purchase shares of the
Company's common stock, $.01 par value (the "Common Stock"). Two Hundred
Eighty-Seven Thousand Five Hundred (287,500) shares of Common Stock in the
aggregate have been approved for this purpose. This Plan is intended to
constitute an "employee stock purchase plan" within the meaning of Section
423(b) of the Internal Revenue Code of 1986, as amended (the "Code"), and shall
be interpreted in accordance with that intent.

         1. ADMINISTRATION. The Plan shall be administered by the Company's
Board of Directors or by a Committee appointed by the Board of Directors (the
"Committee"). The Board of Directors or the Committee has authority to make
rules and regulations for the administration of the Plan and its interpretations
and decisions with regard thereto shall be final and conclusive. No member of
the Board of Directors or individual exercising administrative authority with
respect to the Plan shall be liable for any action or determination made in good
faith with respect to the Plan or any option granted hereunder.

         2. ELIGIBILITY. All employees of the Company, including Directors who
are employees, are eligible to participate in any one or more of the offerings
of Options (as defined in Section 9) to purchase Common Stock under the Plan
provided that:

         (a) they are regularly employed by the Company more than 20 hours a
week; and

         (b) they are employees of the Company on the first day of the
applicable Plan Period (as defined below).

         Participation in the Plan will be neither permitted nor denied contrary
to the requirements of the Code. No employee may be granted an option hereunder
if such employee, immediately after the option is granted, owns 5% or more of
the total combined voting power or value of the stock of the Company. For
purposes of the preceding sentence, the attribution rules of Section 424(d) of
the Code shall apply in determining the stock ownership of an employee, and all
stock which the employee has a contractual right to purchase shall be treated as
stock owned by the employee.

         3. OFFERINGS. The Company will make one or more offerings ("Offerings")
to employees to purchase Common Stock under this Plan. The initial Offering will
begin on the effective date of the Company's initial public offering and end on
the following December 31 (the "Initial Offering"). All subsequent Offerings
shall begin on each January 1 or July 1, or the first business day thereafter.
The first day of each Offering shall be known as the "Offering Date". Except for
the Initial Offering, each Offering Date will begin a six-month period (a "Plan
Period").

         4. PARTICIPATION. An employee eligible on the Offering Date of any
Offering may participate in such Offering by completing and forwarding an
enrollment form to the employee's appropriate payroll location. The form will
(a) state a percentage to be deducted from his Compensation per pay period, (b)
authorize the purchase of Common Stock for him in each Offering in accordance
with the terms of the Plan and (c) specify the exact name or names in which
shares of Common Stock purchased for him are to be issued pursuant to Section 10
hereof. Unless an employee files a new form or withdraws from the Plan, his
deductions and purchases will continue at the same percentage amount for future
Offerings under the Plan as long as the Plan remains in effect.

<PAGE>

         5. EMPLOYEE CONTRIBUTIONS. Each eligible employee may authorize payroll
deductions at a minimum of one percent (1%) up to a maximum of ten percent (10%)
of such employee's Compensation for each such pay period. The Company shall
maintain book accounts showing the amount of payroll deductions made by each
eligible employee for each Plan Period.

         6. DEDUCTION CHANGES. An employee may not increase or decrease his or
her payroll deduction during any Plan Period, but may increase or decrease his
or her payroll deduction with respect to the next Plan Period by filing a new
payroll deduction authorization form in advance of the next Offering Date.

         7. INTEREST. No interest will be paid on employee accounts; however,
the Board of Directors or its Committee may, in its sole discretion, elect to
credit employee accounts with interest at such per annum rate as the Board of
Directors or the Committee may from time to time determine.

         8. WITHDRAWAL OF FUNDS. An employee may at any time prior to the close
of business on the last business day in a Plan Period, and for any reason,
permanently withdraw the entire balance accumulated in the employee's account
and thereby withdraw from participation in an Offering. Partial withdrawals are
not permitted. The employee may not begin participation again during the
remainder of the Plan Period. The employee may participate in any subsequent
Offering in accordance with terms and conditions established by the Board of
Directors or the Committee.

         9. GRANT OF OPTIONS. On each Offering Date, the Company will grant to
each eligible employee who is then a participant in the Plan an option
("Option") to purchase on the last day of such Offering (the "Exercise Date"),
at the Option Price hereinafter provided for, (a) a number of shares of Common
Stock, which number shall not exceed the number of whole shares which is less
than or equal to $12,500 divided by the closing price per share of Common Stock
on the Offering Date, or (b) such other lesser maximum number of shares as shall
have been established by the Board or the Committee in advance of the offering.
The purchase price for each share purchased under such Option (the "Option
Price") will be 85% of the Fair Market Value of the Common Stock on the Offering
Date or the Exercise Date, whichever is less.

         Notwithstanding the foregoing, no employee may be granted an option
hereunder if such employee, immediately after the option was granted, would be
treated as owning stock possessing five percent (5%) or more of the total
combined voting power or value of all classes of stock of the Company or any
Parent or Subsidiary (as defined in Section 12). For purposes of the preceding
sentence, the attribution rules of Section 424(d) of the Code shall apply in
determining the stock ownership of an employee, and all stock which the employee
has a contractual right to purchase shall be treated as stock owned by the
employee. In addition, no employee may be granted an Option which permits his or
her rights to purchase stock under the Plan, and any other employee stock
purchase plan of the Company and its Parents and Subsidiaries, to accrue at a
rate which exceeds $25,000 of the fair market value of such stock (determined on
the option grant date or dates) for each calendar year in which the Option is
outstanding at any time. The purpose of the limitation in the preceding sentence
is to comply with Section 423(b)(8) of the Code.

         10. EXERCISE OF OPTION AND PURCHASE OF SHARES. Each employee who
continues to be a participant in the Plan on the Exercise Date shall be deemed
to have exercised his or her Option on such date and shall acquire from the
Company such number of whole shares of Common Stock reserved for the purpose of
the Plan as his or her accumulated payroll deductions on such date will purchase
at the Option Price, subject to any other limitations contained in the Plan. Any
amount remaining in an employee's account at the end of an Offering will be
refunded to the employee promptly.

         11. ISSUANCE OF CERTIFICATES; BOOK ENTRY. Certificates representing
shares of Common Stock purchased under the Plan may be issued only in the name
of the employee, or in the name of the employee and another person of legal age
as joint tenants with rights of survivorship. The Administrator in its sole
discretion may, in lieu of issuing physical certificates representing shares of
Common Stock purchased under the Plan, make the appropriate book entry in the
stock records of the Company.

         12. DEFINITIONS. The phrase "last reported sale price" means the last
reported sale price of the Common Stock on the Exchange on a given day or, if no
sales of Common Stock were made on that day, the last reported sale price of the
Common Stock on the next preceding day on which the sales were made.

<PAGE>

         The term "Compensation" means the amount of total cash compensation,
prior to salary reduction pursuant to either Section 125, 132(f) or 401(k) of
the Code, including base pay, overtime, commissions and incentive bonus awards,
but excluding allowances and reimbursements for expenses such as relocation
allowances for travel expenses, income or gains on the exercise of Company stock
options, and similar items.

         The term "Fair Market Value of the Common Stock" means (i) if the
Common Stock is admitted to trading on a national securities exchange or the
National Association of Securities Dealers National Market System, the closing
price reported for the Common Stock on such exchange or system for such date or,
if no sales were reported for such date, for the last date preceding such date
for which a sale was reported, or (ii) if clause (i) does not apply but the
Common Stock is admitted to quotation on the National Association of Securities
Dealers Automated Quotation System ("NASDAQ"), the average of the highest bid
and lowest asked prices of the Common Stock reported on NASDAQ for such date or,
if no bid and asked prices were reported for such date, for the last day
preceding such date for which such prices were reported.

         The term "Parent" means a "parent corporation" with respect to the
Company, as defined in Section 424(e) of the Code.

         The term "Subsidiary" means a "subsidiary corporation" with respect to
the Company, as defined in Section 424(f) of the Code.

         13. RIGHTS ON RETIREMENT, DEATH, OR TERMINATION OF EMPLOYMENT. In the
event of a participating employee's termination of employment prior to the last
business day of a Plan Period, no payroll deduction shall be taken from any pay
due and owing to the employee and the balance in the employee's account shall be
paid to the employee or, in the event of the employee's death, to the employee's
designated beneficiary.

         14. OPTIONEES NOT STOCKHOLDERS. Neither the granting of an Option to an
employee nor the deductions from an employee's pay shall constitute such
employee a stockholder of the shares of Common Stock covered by an Option under
this Plan until such shares have been purchased by and issued to such employee.

         15. RIGHTS NOT TRANSFERABLE. Rights under this Plan are not
transferable by a participating employee other than by will or the laws of
descent and distribution, and are exercisable during the employee's lifetime
only by the employee.

         16. APPLICATION OF FUNDS. All funds received or held by the Company
under this Plan may be combined with other corporate funds and may be used for
any corporate purpose.

         17. ADJUSTMENT IN CASE OF CHANGES AFFECTING COMMON STOCK. In the event
of a subdivision of outstanding shares of Common Stock, or the payment of a
dividend in Common Stock, the number of shares approved for this Plan, and the
share limitation set forth in Section 9, shall be increased proportionately, and
such other adjustment shall be made as may be deemed equitable by the Board of
Directors or the Committee. In the event of any other change affecting the
Common Stock, such adjustment shall be made as may be deemed equitable by the
Board of Directors or the Committee to give proper effect to such event.

         18. AMENDMENT OF THE PLAN. The Board of Directors may at any time and
from time to time, amend this Plan in any respect, except that without approval
by a majority of the votes cast at a duly held stockholders' meeting at which a
quorum representing a majority of all outstanding Common Stock is, either in
person or by proxy, present, no amendment shall be made (a) increasing or
decreasing the number of shares approved for this Plan, (b) changing the class
of employees eligible to receive Options under the Plan or (c) making any other
change that would require stockholder approval in order for the Plan, as
amended, to qualify as an "employee stock purchase plan" under Section 423(b) of
the Code.

         19. INSUFFICIENT SHARES. In the event that the total number of shares
of Common Stock specified in elections to be purchased under any Offering plus
the number of shares purchased under previous Offerings under this Plan exceeds
the maximum number of shares issuable under this Plan, the Board of Directors or
the Committee shall allot, in such manner as it may determine, the shares then
available.

         20. TERMINATION OF THE PLAN. This Plan may be terminated at any time by
the Company's Board of Directors. Upon termination of this Plan all amounts in
the accounts of participating employees shall be promptly refunded.

<PAGE>

         21. GOVERNMENTAL REGULATIONS. The Company's obligation to sell and
deliver Common Stock under this Plan is subject to listing on the NMS and
obtaining all governmental approvals required in connection with the
authorization, issuance, or sale of such stock.

         The Plan shall be governed by Massachusetts law except to the extent
that such law is preempted by federal law.

         22. ISSUANCE OF SHARES. Shares may be issued upon exercise of an Option
from authorized but unissued Common Stock, from shares held in the treasury of
the Company, or from any other proper source.

         23. TAX WITHHOLDING. Participation in the Plan is subject to any
minimum required tax withholding on income of the employee in connection with
the Plan. Each employee agrees, by entering the Plan, that the Company and its
Subsidiaries shall have the right to deduct any such taxes from any payment of
any kind otherwise due to the employee, including shares issuable under the
Plan.

         24. NOTIFICATION UPON SALE OF SHARES. Each employee agrees, by entering
the Plan, to give the Company prompt notice of any disposition of shares
purchased under the Plan where such disposition occurs within two years after
the date of grant of the Option pursuant to which such shares were purchased.

         25. EFFECTIVE DATE AND APPROVAL OF SHAREHOLDERS. The Plan shall
initially take effect on the first day of the Company's initial public offering
(the "Effective Date") subject to closing of the offering and approval by a
majority of the votes cast at a duly held shareholders' meeting at which a
quorum representing a majority of all outstanding Common Stock is, either in
person or by proxy, present, which approval must occur within twelve months of
the adoption of the Plan by the Board of Directors. The Plan, as amended and
restated on December 7, 2000, shall be effective as of the Offering Period
beginning on January 1, 2001.

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