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                                  EXHIBIT 10.23

                             PICTURETEL CORPORATION

                                1999 EQUITY PLAN

1.         PURPOSE

           The purpose of the 1999 Equity Plan (the "Plan") is to advance the
interests of PictureTel Corporation (the "Company") by enhancing its ability to
(a) attract and retain employees who are in a position to make significant
contributions to the success of the Company and its subsidiaries: (b) reward
employees for such contributions: (c) encourage employees to take into account
the long-term interests of the Company through ownership of shares of common
stock, par value $0.01 per share, of the Company ("Stock"); and (d) attract
other persons or entities who are in a position to make a significant
contribution to the success of the Company.

           The Plan is intended to accomplish these goals by enabling the
Company to grant Awards to selected eligible employees. Awards may be in the
form of Options, Stock Appreciation Rights (as described in Section 6.2),
Restricted Stock or Unrestricted Stock Awards (as described in Section 6.3),
Deferred Stock Awards (as described in Section 6.4), Performance Awards (as
described in Section 6.5), Loans or Supplemental Grants (as described in Section
6.6), or combinations thereof.

2.         ADMINISTRATION

           The Plan will be administered by a committee of at least two persons
(the "Committee") appointed by the Board of Directors of the Company (the
"Board"), all of the members of which Committee must be disinterested
non-employee directors within the meaning of Rule 16b-3 under the Securities
Exchange Act of 1934 (the "1934 Act") and "outside directors" within the meaning
of Section 162(m)(4)(C)(i) of the Internal Revenue Code of 1986, as amended (the
"Code") (the "Outside Directors"). If any member of the Committee is not an
Outside Director, or a non-employee director, a sub-committee (the
"Sub-Committee") consisting solely of the non-employee directors and Outside
Directors shall administer the Plan in connection with Awards to "officers" of
the Company within the meaning of Section 16(b) of the 1934 Act or with respect
to any Award intended to be exempt under Section 162(m)(3) of the Code. Any
references to the Committee in this Plan shall also mean the Sub-Committee.
Alternatively, the Board may serve as the Committee so long as a majority of the
members of the Board are disinterested persons within the meaning of Rule 16b-3.

           The Committee will have authority, not inconsistent with the express
provisions of the Plan and in addition to other authority granted under the
Plan, (a) to grant Awards at such time or times as it may choose; (b) determine
the size of each Award, including the number of shares of Stock subject to the
Award; (c) determine the type or types of each Award: (d) determine the terms
and conditions of each Award; (e) waive compliance by a Participant (as defined
below) with any obligations to be performed by the Participant under an Award
and waive any term or condition of an Award; (f) with the consent of the
Participant, cancel an existing Award in whole or in part and grant the
Participant another Award in its place; (g) prescribe the form or forms of
instruments that are required under the Plan, including any written notices and
elections required of Participants, or are deemed appropriate by the Committee,
and change such forms from time to time; (h) adopt, amend and rescind rules and
regulations for the administration of the Plan; and (i) interpret the Plan and
decide any questions and settle all controversies and disputes that may arise in
connection with the Plan. Such determinations and actions of the Committee, and
all other determinations and actions of the Committee made or taken under
authority granted by any provision of the Plan, will be conclusive and will bind
all parties. A majority of the members of the Committee will constitute a
quorum, and all determinations of the Committee must be made by a majority of
its members. In the case of any Award intended to be eligible for the
performance-

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based compensation exception under Section 162(m), the Committee shall exercise
its discretion consistent with qualifying the Award for such exception.

3.         EFFECTIVE DATE AND TERM OF PLAN

           The Plan will become effective on the date on which it is approved by
the stockholders of the Company.

           No awards shall be granted under the Plan after the completion of
three (3) years from the date on which the Plan was approved by the stockholders
of the Company, but awards previously granted may extend beyond that date.

4.         SHARES SUBJECT TO THE PLAN

           Subject to adjustment as provided in Section 8.6 below, the aggregate
number of shares of Stock that may be delivered under the Plan will be
3,000,000. If any Award requiring exercise by the Participant for delivery of
Stock terminates without having been exercised in full, or if any Award payable
in Stock or cash is satisfied in cash rather than Stock, the number of shares of
Stock as to which such Award was not exercised or for which cash was substituted
will be available for future grants. Shares of Restricted Stock that have been
forfeited in accordance with the terms of the applicable Award and shares held
back, in satisfaction of the exercise price or tax withholding requirements,
from shares that would otherwise be delivered pursuant to an Award shall also be
available for future grants. The number of shares of Stock delivered under an
Award shall be determined net of any previously acquired Shares tendered by the
participant in payment of the exercise price or of withholding taxes.

           Subject to adjustment as provided in Section 8.6 below, no one
individual participating in the Plan may be granted stock options for more than
500,000 shares of Stock in the aggregate in any fiscal year.

           Stock delivered under the Plan may be either authorized but unissued
stock or previously issued Stock acquired by the Company and held in treasury.
No fractional shares of stock will be delivered under the Plan.

5.         ELIGIBILITY AND PARTICIPATION

           Those eligible to be selected to receive Awards under the Plan will
be (i) persons in the employ of the Company or any of its subsidiaries
("Employees") who, in the opinion of the Committee, are in a position to make a
significant contribution to the success of the Company or its subsidiaries, and
(ii) such other persons or entities who, in the opinion of the Committee or the
Board, are in a position to make a significant contribution to the success of
the Company or its Subsidiaries ("Participants"). A "subsidiary" for purposes of
the Plan will be a corporation in which the Company owns directly or indirectly,
stock possessing 50% or more of the total combined voting power of all classes
of stock. Eligibility for ISO's is further limited to those individuals whose
employment status would qualify them for the tax treatment described in Sections
421 and 422 of the Code.

6.         TYPES OF AWARDS

           6.1       Options.

           (a) Nature of Options. An Option is an Award entitling the recipient
on exercise thereof to purchase Stock at a specified exercise price.

           Both "incentive stock options," as defined in Section 422 of the
Internal Revenue Code of 1986, as amended (the "Code"), and Options that are not
incentive stock options, may be granted

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under the Plan. Any Option intended to qualify as an incentive stock option will
be referred to in the Plan as an "ISO." Instruments evidencing ISOs must contain
such provisions as are required under applicable provisions of the Code. Once an
ISO has been granted, no action by the Committee that would cause the Option to
lose its status under the Code as an incentive stock option will be effective
without the consent of the Option holder.

           (b) Exercise Price. The exercise price of an Option will be
determined by the Committee subject to the following:

           (1) The exercise price of an Option that is not an ISO may not be
less than 100% of the fair market value per share of the Stock at the effective
date of the grant.

           (2) The exercise price of an ISO may be any amount which is not be
less than 100% (110% in the case of an ISO granted to a ten-percent shareholder)
of the fair market value per share of the Stock at the effective date of the
grant. A "ten-percent shareholder" is any person who at the time of grant owns
directly or indirectly, or is deemed to own by reason of the attribution rules
of section 425(d) of the Code, Stock possessing more than 10% of the total
combined voting power of all classes of stock of the Company or of any of its
subsidiaries.

           (3) In no case may the exercise price paid for Stock that is part of
an original issue of authorized Stock be less than the par value per share of
the Stock.

           (4) The Committee may not reduce the exercise price of an Option at
any time after the time of grant with or without the consent of the Participant,
thereby prohibiting the cancellation of higher priced and the reissue of lower
priced Options, i.e. reprice options.

           (c) Duration of Options. The latest date on which an Option may be
exercised will be the tenth anniversary (fifth anniversary, in the case of an
ISO granted to a ten-percent shareholder) of the day immediately preceding the
date the Option was granted, or such earlier date as may have been specified by
the Committee at the time the Option was granted.

           (d) Exercise of Options. An option will become exercisable at such
time or times, and on such conditions, as the Committee may specify. The
Committee may at any time accelerate the time at which all or any part of the
Option may be exercised. Any exercise of an Option must be in writing, signed by
the proper person and delivered or mailed to the Company, accompanied by (1) any
documents required by the Committee and (2) payment in full in accordance with
paragraph (e) below or the number of shares for which the Option is exercised.
If desired, the Committee may provide for vesting prior to the date the Option
becomes exercisable.

           (e) Payment for Stock. Stock purchased on exercise of an Option must
be paid for as follows: (1) in cash or by check (acceptable to the Company in
accordance with guidelines established for this purpose), bank draft or money
order payable to the order of the Company or (2) if so permitted by the
instrument evidencing the Option (or in the case of an Option which is not an
ISO, by the Committee at or after grant of the Option, (i) through the delivery
of shares of Stock which have been outstanding for at least six months (unless
the Committee expressly approves a shorter period) and which have a fair market
value on the last business day preceding the date of exercise equal to the
exercise price, or (ii) by delivery of a promissory note of the Option holder to
the Company, payable on such terms as are specified by the Committee (provided
that, if the Stock delivered upon exercise of the Option is an original issue of
authorized Stock, at least so much of the exercise price as represents the par
value of such Stock must be paid in cash), or (iii) by delivery of an
unconditional and irrevocable undertaking by a broker to deliver promptly to the
Company sufficient funds to pay the exercise price, or (iv) by any combination
of the permissible forms of payment.

           (f) Discretionary Payments. If the market price of shares of Stock
subject to an Option (other than an Option which is in tandem with a Stock
Appreciation Right as described in Section

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6.2 below) exceeds the exercise price of the Option at the time of its exercise,
the Committee may cancel the Option and cause the Company to pay in cash or in
shares of Common Stock (at a price per share equal to the fair market value per
share) to the person exercising the Option an amount equal to the difference
between the fair market value of the Stock which would have been purchased
pursuant to the exercise (determined on the date the Option is canceled) and the
aggregate exercise price which would have been paid. The Committee may exercise
its discretion to take such action only if it has received a written request
from the person exercising the Option, but such a request will not be binding on
the Committee.

           (g) Reload Awards. The Committee may provide that upon the exercise
of an Award through the tender of previously owned shares of Stock, the
participant or other person exercising the Award will automatically receive a
new Award of like kind covering the number of shares of Stock tendered in
payment of the exercise price of the first Award.

           6.2.      Stock Appreciation Rights.

           (a) Nature of Stock Appreciation Rights. A Stock Appreciation Right
is an Award entitling the recipient on exercise of the Right to receive an
amount, in cash or Stock or a combination thereof (such form to be determined by
the Committee), determined in whole or in part by reference to appreciation in
Stock value.

           In general, a Stock Appreciation Right entitles the Participant to
receive, with respect to each share of Stock as to which the Right is exercised,
the excess of the share's fair market value on the date of exercise over its
fair market value on the date the Right was granted. However, the Committee may
provide at the time of grant that the amount the recipient is entitled to
receive will be adjusted upward or downward under rules established by the
Committee to take into account the performance of the Stock in comparison with
the performance of other stocks or an index of other stocks.

           (b) Grant of Stock of Appreciation Rights. Stock Appreciation Rights
may be granted in tandem with, or independently of, Options granted under the
Plan. A Stock Appreciation Right granted in tandem with an Option that is not an
ISO might be granted either at or after the time the Option is granted. A Stock
Appreciation Right granted in tandem with an ISO may be granted only at the time
the Option is granted.

           (c) Rules Applicable to Tandem Awards. When Stock Appreciation Rights
are granted in tandem with Options, the following will apply:

           (1) The Stock Appreciation Right will be exercisable only at such
time or times, and to the extent, that the related Option is exercisable and
will be exercisable in accordance with the procedure required for exercise of
the related Option.

           (2) The Stock Appreciation Right will terminate and no longer be
exercisable upon the termination or exercise of the related Option, except that
a Stock Appreciation Right granted with respect to less than the full number of
shares covered by an Option will not be reduced until the number of shares as to
which the related Option has been exercised or has terminated exceeds the number
of shares not covered by the Stock Appreciation Right.

           (3) The Option will terminate and no longer be exercisable upon the
exercise of the related Stock Appreciation Right.

           (4) The Stock Appreciation Right will be transferable only with the
related Option.

           (5) A Stock Appreciation Right granted in tandem with an ISO may be
exercised only when the market price of the Stock subject to the Option exceeds
the exercise price of such option.

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           (d) Exercise of Independent Stock Appreciation Rights. A Stock
Appreciation Right not granted in tandem with an Option will become exercisable
at such time or times, and on such conditions, as the Committee may specify. The
Committee may at any time accelerate the time at which all or any part of the
Right may be exercised.

           Any exercise of an independent Stock Appreciation Right must be in
writing, signed by the proper person and delivered or mailed to the Company,
accompanied by any other documents required by the Committee.

           6.3.      Restricted and Unrestricted Stock.

           (a) Nature of Restricted Stock Award. A Restricted Stock Award
entitles the recipient to acquire shares of Stock subject to the restrictions
described in paragraph (d) below ("Restricted Stock") for a price which may not
be less than the fair market value per share of the Stock on the effective date
of the grant.

           (b) Acceptance of Award. A Participant who is granted a Restricted
Stock Award will have no rights with respect to such Award unless, within sixty
days (or such shorter period as the Committee may specify) following the date of
the Award, the Participant accepts the Award by written instrument delivered or
mailed to the Company accompanied by payment in full of the specified purchase
price, if any, of the shares covered by the Award. Payment may be by certified
or bank check or other instrument acceptable to the Committee.

           (c) Rights as a Stockholder. A Participant who receives Restricted
Stock will have all the rights of a stockholder with respect to the Stock,
including voting and dividend rights, subject to the restrictions described in
paragraph (d) below and any other conditions imposed by the Committee at the
time of grant. Unless the Committee otherwise determines, certificates
evidencing shares of Restricted Stock will remain in the possession of the
Company until such shares are free of all restrictions under the Plan.

           (d) Restrictions. Except as otherwise specifically provided by the
Plan, until these restrictions lapse, Restricted Stock may not be sold,
assigned, transferred, pledged or otherwise encumbered or disposed of, and if
the Participant ceases to be an Employee for any reason, must be offered to the
Company for purchase for the amount of cash paid for the Stock, or forfeited to
the Company if no cash was paid. The restrictions will lapse at such time or
times, and on such conditions, as the Committee may specify. The Committee may
at any time accelerate the time at which the restrictions on all or any part of
the shares will lapse.

           (e) Notice of Election. Any Participant making an election under
Section 83(b) of the Code with respect to Restricted Stock must provide a copy
thereof to the Company within ten days of the filing of such election with the
Internal Revenue Service.

           (f) Other Awards Settled with Restricted Stock. The Committee may, at
the time any Award described in this Section 6 is granted, provide that any or
all the Stock delivered pursuant to the Award will be Restricted Stock.

           (g) Unrestricted Stock. The Committee may, in its sole discretion,
sell to any Participant shares of Stock free of restrictions under the Plan for
a price that may not be less than the fair market value per share of the Stock
on the effective date of the grant.

           6.4       Deferred Stock.

           (a) Nature of Deferred Stock Award. A Deferred Stock Award entitles
the recipient to receive shares of Deferred Stock at the same price as
Restricted or Unrestricted Stock, which is Stock to be delivered in the future.
Delivery of the Stock will take place at such time or times, and

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on such conditions, as the Committee may specify. The Committee may at any time
accelerate the time at which delivery of all or any part of the Stock will take
place.

           (b) Other Awards Settled with Deferred Stock. The committee may at
the time any Award described in this Section 6 is granted, provide that, at the
time Stock would otherwise be delivered pursuant to the Award, the Participant
will instead receive an instrument evidencing the Participant's right to future
delivery of Deferred Stock.

           6.5       Performance Awards; Performance Goals

           (a) Nature of Performance Awards. A Performance Award entitles the
recipient to receive, without payment, an amount, in cash or Stock or a
combination thereof (such form to be determined by the Committee), following the
attainment of Performance Goals. Performance Goals may be related to personal
performance, corporate performance, departmental performance or any other
category of performance deemed by the Committee to be important to the success
of the Company. The Committee will determine the Performance Goals, the period
or period during which performance is to be measured and all other terms and
conditions applicable to the Award.

           6.6       Loans and Supplemental Grants.

           (a) Loans. The Company may make a loan to a Participant ("Loan"),
either on the date of or after the grant of any Award to the Participant. A Loan
may be made either in connection with the purchase of Stock under the Award or
with the payment of any Federal, state and local income tax with respect to
income recognized as a result of the Award. The Committee will have full
authority to decide whether to make a Loan and to determine the amount, terms
and conditions of the Loan, including the interest rate (which may be zero),
whether the Loan is to be secured or unsecured or with or without recourse
against the borrower, the terms on which the Loan is to be repaid and the
conditions, if any, under which it may be forgiven. However, no Loan may have a
term (including extensions) exceeding ten years in duration.

           (b) Supplemental Grants. In connection with any Award, the Committee
may at the time such Award is made or at a later date, provide for and grant a
cash award to the Participant ("Supplemental Grant") not to exceed an amount
equal to (1) the amount of any federal, state and local income tax on ordinary
income for which the Participant will be liable with respect to the Award, plus
(2) an additional amount on a grossed-up basis necessary to make the Participant
whole after tax, discharging all the Participant's income tax liabilities
arising from all payments under this Section 6. Any payments under this
subsection (b) will be made at the time the Participant incurs Federal income
tax liability with respect to the Award.

7.         EVENTS AFFECTING OUTSTANDING AWARDS

           7.1       Retirement.

The following will apply if a Participant ceases to be an Employee by reason of
retirement with consent of the Company (a) after attainment of age 65, (b) prior
to attainment of age 65 in the case of ISO's or (c) prior to attainment of age
65 in the case of all other Awards only if the Committee so specifies at or
prior to such retirement.

           (a) Subject to paragraph (c) below each Option and Stock Appreciation
Right held by the Participant when the Participant's employment ended will
immediately become exercisable in full and will continue to be exercisable until
the earlier of (1) the first anniversary of the date on which such employment
ended or (2) the date on which the Award would have terminated had the
Participant remained an Employee. If the Participant dies after such
Participant's employment has ended, the Award may be exercised within such
limits by the Participant's executor or

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administrator or by the person or persons to whom the Award is transferred by
will or the applicable laws descent and distribution (the Participant's "legal
representative").

           (b) Subject to paragraph (c) below each share of Restricted Stock
held by the Participant when the Participant's employment ended will immediately
become free of the restrictions.

           (c) If when the Participant's employment ended the exercise of an
Option or Stock Appreciation Right or lapse of restrictions on Restricted Stock
was subject to performance or other conditions (other than conditions relating
to the mere passage of time and continued employment) which had not been
satisfied at such time, the Committee may remove or modify such conditions or
provide that the Participant will receive the benefit of the Award if and when
the conditions are subsequently satisfied. If the Committee does not take such
action, however, such Award will terminate as of the date on which the
Participant's employment ended.

           (d) Any payment or benefit under a Deferred Stock Award, Performance
Award, or Supplemental Grant to which the Participant has not become irrevocably
entitled will be forfeited and the Award canceled as of the date on which the
Participant's employment ended unless otherwise provided in the instrument
evidencing the Award or otherwise agreed to by the Committee.

           7.2       Death and Disability.

           If a Participant ceases to be an Employee by reason of death or total
and permanent disability (as determined by the Committee), the following will
apply:

           (a) All Options then held by the Participant that are not otherwise
exercisable, shall have the exercise rights thereto accelerated so that for each
full year of service with the Company, no less than twenty-five (25) percent of
the aggregate number of shares granted and outstanding shall be exercisable as
of the termination date (not to exceed one hundred (100) percent of the
aggregate number of shares); all option shares not accelerated under the
foregoing formula terminate as of the termination date. Any Awards that are so
exercisable will continue to be exercisable until the earlier of (1) the first
anniversary of the date on which the Participant's employment ended or (2) the
date on which the Award would have terminated had the Participant remained an
Employee. If the Participant has died, the Participant's legal representative
may exercise the Award within such limits.

           (b) All Stock Appreciation Rights held by the Participant that are
not exercisable on the thirtieth day after the termination of the Participant's
employment will terminate as of such date. Any Awards that are so exercisable
will continue to be exercisable until the earlier of (1) the first anniversary
of the date on which the Participant's employment ended or (2) the date on which
the Award would have terminated had the Participant remained an Employee. If the
Participant has died, the Participant's legal representative may exercise the
Award within such limits.

           (c) All Restricted Stock held by the Participant when the
Participant's employment ended must be transferred to the Company (and, in the
event the certificates representing such Restricted Stock are held by the
Company, such Restricted Stock will be so transferred without any further action
by the Participant) in accordance with Section 6.3 above.

           (d) Any payment or benefit under a Deferred Stock Award, Performance
Award, or Supplemental Grant to which the Participant has not become irrevocably
entitled will be forfeited and the Award canceled as of the date on which the
Participant's employment ended, unless otherwise provided in the instrument
evidencing the Award or otherwise agreed to by the Committee.

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           7.3       Other Termination of Employment

           If a Participant ceases to be an Employee for any reason other than
those specified in Sections 7.1 or 7.2 above, the following will apply:

           (a) All Options and Stock Appreciation Rights held by the Participant
that were not exercisable when his or her employment ended will then terminate.
Any Awards that were so exercisable will continue to be exercisable until the
earlier of (1) the date which is three months after the date on which his or her
employment ended and (2) the date on which the Award would have terminated had
the Participant remained an Employee, unless employment was terminated for
cause, in which event any Awards that were so exercisable shall then terminate.
The Committee may, in its discretion, extend the exercise period beyond such
three-month period.

           (b) All Restricted Stock held by the Participant when the
Participant's employment ended must be transferred to the Company (and, in the
event the certificates representing such Restricted Stock are held by the
Company, such Restricted Stock will be so transferred without any further action
by the Participant) in accordance with Section 6.3 above.

           (c) Any payment or benefit under a Deferred Stock Award, Performance
Award, or Supplemental Grant to which the Participant has not become irrevocably
entitled will be forfeited and the Award canceled as of the date of such
termination of employment unless otherwise provided in the instrument evidencing
the Award or otherwise agreed to by the Committee.

           (d) All Options and SARs held by the participant whose cessation of
employment or other service relationship is determined by the Committee in its
sole discretion to result from cause, namely reasons which cast such discredit
on the Participant as to justify immediate termination of the Award shall
immediately terminate upon such cessation.

           For purposes of this Section 7.3, an Employee's employment will not
be considered to have ended (1) in the case of sick leave or other bona fide
leave of absence approved for purposes of the Plan by the Committee, so long as
the Employee's right to reemployment is guaranteed either by statute or by
contract, or (2) in the case of a transfer of employment between the company and
a subsidiary or between subsidiaries, or to the employment of a corporation (or
a parent or subsidiary corporation of such corporation) issuing or assuming an
Award in a transaction to which section 425(a) of the Code applies.

           Unless the Committee expressly provides otherwise, a Participant's
"employment or other service relationship with the Company and its Subsidiaries"
will be deemed to have ceased, in the case of an employee Participant, upon the
termination of the Participant's employment with the Company or its Subsidiaries
(whether or not the Participant continues in the service of the Company or its
Subsidiaries in some capacity other than that of an employee of the Company or
its Subsidiaries), and in the case of any other Participant, when the service
relationship in respect of which the Award was granted terminates (whether or
not the Participant continues in the service of the Company or its Subsidiaries
in some other capacity).

           7.4 (A) Change in Control Provision

           As used herein, a Change in Control and related definitions shall
have the meanings as set forth in Section 7.4 (C) below.

           Immediately prior to the occurrence of a Change in Control:

           (a) Each Option and Stock Appreciation Right shall automatically
become fully exercisable unless the Committee shall otherwise expressly provide
at the time of grant.

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           (b) Restrictions and conditions on Restricted Stock, Deferred Stock,
Performance Units and Other Stock-based Awards shall automatically be deemed
waived to the extent, if any, specified (whether at or after time of grant) by
the Committee.

           In addition to the foregoing and Sections 6.1(d), 6.2(c) and (d),
6.3(d) and 6.4(a), the Committee may at any time prior to or after a Change in
Control accelerate the exercisability of any Options and Stock Appreciation
Rights and may waive restrictions, limitations and conditions on Restricted
Stock, Deferred Stock, Performance Units and Other Stock-based Awards to the
extent it shall in its sole discretion determine.

           7.4 (B) Certain Corporate Transactions.

           (a) In the event of a consolidation or merger in which the Company is
not the surviving corporation or which results in the acquisition of
substantially all the Company's outstanding Stock by a single person or entity
or by a group of persons and/or entities acting in concert, or in the event of
the complete liquidation of the Company or the sale or transfer of substantially
all of the Company's assets (a "Covered Transaction"), all outstanding Options
will terminate as of the effective date of the Covered Transaction, provided
that at least twenty (20) days prior to the effective date of any such merger,
consolidation, liquidation or sale of assets, but subject to Paragraphs (c) and
(d) below, the Committee shall make all outstanding Options exercisable
immediately prior to consummation of such Covered Transaction (to the extent
that such Options are not exercisable immediately prior to the consummation of
the Covered Transaction pursuant to Section 7.4 (A)).

           (b) Subject to Paragraphs (c) and (d) below, the Committee may, in
its sole discretion, prior to the effective date of the Covered Transaction, (1)
remove the restrictions from each outstanding share of Restricted Stock, (2)
cause the Company to make any payment and provide any benefit under each
outstanding Deferred Stock Award, Performance Award, and Supplemental Grant
which would have been made or provided with the passage of time had the
transaction not occurred and the Participant remained an employee, and (3)
forgive all or any portion of the principal of or interest on a loan.

           (c) If an outstanding Option or Other Award is subject to performance
or other conditions (other than conditions relating the mere passage of time and
continued employment) which will not have been satisfied at the time of the
Covered Transaction, the Committee may, in its sole discretion, remove such
conditions. If it does not do so however, such Option or Other Award will
terminate, because the conditions have not been satisfied, as of the date of the
Covered Transaction notwithstanding Paragraph (a) and (b) above.

           (d) With respect to an outstanding Option or Other Award held by the
participant who, following the Covered Transaction, will be employed by a
corporation which is a surviving or acquiring corporation in such transaction or
an affiliate of such a corporation, the Committee may, in lieu of the action of
the Committee described in Paragraphs (a) or (b) above or in addition to any
Option being exercisable immediately prior to consummation of the Covered
Transaction pursuant to Section 7.4 A. above, arrange to have such surviving or
acquiring corporation or affiliate assume the Option or Other Award or grant to
the Participant a replacement or substitute Option or other Award on such terms
as the Committee determines. In the case of an assumed, replacement or
substitute Option intended to be an Incentive Stock Option, the requirements of
Section 424 (a) of the Code shall be satisfied except as otherwise provided by
the Committee.

           7.4 (C) Change in Control and Related Definitions.

           A "Change in Control" shall be deemed to have occurred if the
conditions set forth in any one of the following paragraphs shall have been
satisfied:

                                       9A
<PAGE>   10

           (a) Any Person is or becomes the Beneficial Owner, directly or
indirectly, of securities of the Company representing 25% or more of the
combined voting power of the Company's then outstanding securities; or

           (b) During any period of not more than two consecutive years
individuals who at the beginning of such period constitute the Board and any new
director (other than a director designated by a Person who has entered into an
agreement with the Company to effect a transaction described in Clause (a), (b),
or (c) of Section 7.4 (C)) whose election by the Board or nomination for
election by the Company's stockholders was approved by a vote of at least
two-thirds (2/3) of the directors then still in office who either were directors
at the beginning of the period or whose election or nomination for election was
previously so approved, cease for any reason to constitute a majority thereof;
or

           (c) The shareholders of the Company approve a merger or consolidation
of the Company with any other corporation, other than

           (1) A merger or consolidation which would result in the voting
securities of the Company outstanding immediately prior thereto continuing to
represent (either by remaining outstanding or being converted into voting
securities of the surviving entity) 60% or more of the combined voting power of
the voting securities of the Company or such surviving entity outstanding
immediately after such merger or consolidation, or

           (2) A merger or consolidation effected to implement a
recapitalization of the Company (or similar transaction) in which no person
acquires 25% or more of the combined voting power of the Company's then
outstanding securities; or

           (d) The shareholders of the Company approve a plan of complete
liquidation of the Company or an agreement for the sale or disposition by the
Company of all or substantially all the Company's assets.

           "Person" shall have the meaning given in Section 3 (a) (9) of the
Securities Exchange Act of 1934, as modified and used in Sections 13 (d) and 14
(d) thereof; however, a Person shall not include

           (1) The Company or any controlled subsidiary,

           (2) A trustee or other fiduciary holding securities under an employee
benefit plan of the Company or

           (3) A corporation or other entity owned, directly or indirectly, by
the shareholders of the Company in substantially the same proportions as their
ownership of stock of the Company.

           "Beneficial Owner" shall have the meaning defined in Rule 13d-3 under
the Securities Exchange Act of 1934 as amended from time to time.

           7.5       Other Termination Events.

           If a Participant, other than an Employee Participant, ceases to be
affiliated with the Company by reason of the termination of the agreement or
other arrangement with the Company pursuant to which such Participant provides
services or products or otherwise is making a contribution to the Company, then

           (a) Unless otherwise provided in the instrument evidencing the Award
granted to the Participant, all Options and Stock Appreciation Rights held by
the Participant that were not exercisable when such arrangement terminated or
expired will then terminate, and any of such Awards that were so exercisable
shall continue to be exercisable until the earlier of (1) the date

                                      10A
<PAGE>   11

which is three months after the date on which such arrangement terminated or (2)
the date on which such Award would have terminated had the Participant remained
affiliated with the Company pursuant to the agreement or other arrangement. The
Committee may, in its discretion, in the granting instrument or at any later
time, extend the exercise period beyond such three-month period.

           (b) Unless otherwise provided in the instrument evidencing the Award
granted to the Participant, all Restricted Stock held by the Participant when
the arrangement with the Participant ended must be transferred to the Company
(and, in the event the certificates representing such Restricted Stock are held
by the Company, such Restricted Stock will be so transferred without any further
action by the Participant) in accordance with Section 6.3 above.

           (c) Any payment or benefit under a Deferred Stock Award, Performance
Award, or Supplemental Grant to which the Participant has not become irrevocably
entitled will be forfeited and the Award canceled as of the date of such
termination unless otherwise provided in the instrument evidencing the Award or
otherwise agreed to be the Committee.

           Unless the Committee expressly provides otherwise, a Participant's
"employment or other service relationship with the Company and its Subsidiaries"
will be deemed to have ceased, in the case of an employee Participant, upon the
termination of the Participant's employment with the Company or its Subsidiaries
(whether or not the Participant continues in the service of the Company or its
Subsidiaries in some capacity other than that of an employee of the Company or
its Subsidiaries), and in the case of any other Participant, when the service
relationship in respect of which the Award was granted terminates (whether or
not the Participant continues in the service of the Company or its Subsidiaries
in some other capacity).

8.         GENERAL PROVISIONS

           8.1       Documentation of Awards.

           Written instruments prescribed by the Committee from time to time
will evidence awards. Such instruments may be in the form of agreements, to be
executed by both the Participant and the Company, or certificates, letters or
similar instruments, which need not be executed by the Participant but
acceptance of which will evidence agreement to the terms thereof.

           8.2       Rights as a Stockholder: Dividend Equivalents.

           Except as specifically provided by the Plan, the receipt of an Award
will not give a Participant rights as a stockholder: the Participant will obtain
such rights, subject to any limitations imposed by the Plan or the instrument
evidencing the Award, upon actual receipt of Stock. However, the Committee may,
on such conditions as it deems appropriate, provide that a Participant will
receive a benefit in lieu of cash dividends that would have been payable on any
or all Stock subject to the Participant's Award had such Stock been outstanding.
Without limitation, the Committee may provide for payment to the Participant of
amounts representing such dividends, either currently or in the future, or for
the investment of such amounts on behalf of the Participant.

           8.3       Conditions on Delivery of Stock.

           The Company will not be obligated to deliver any shares of Stock
pursuant to the Plan or to remove restriction from shares previously delivered
under the Plan (a) until all conditions of the Award have been satisfied or
removed. (b) Until, in the opinion of the Company's counsel, all applicable
federal and state laws and regulation have been complied with, (c) if the
outstanding Stock is at the time listed on any stock exchange, until the shares
to be delivered have been listed or authorized to be listed on such exchange
upon official notice of notice of issuance, and (d) until all other legal
matters in connection with the issuance and delivery of such shares have

                                      11A
<PAGE>   12

been approved by the Company's counsel. If the sale of Stock has not been
registered under the Securities Act of 1933, as amended, the Company may
require, as a condition to exercise of the Award, such representations or
agreements as counsel for the Company may consider appropriate to avoid
violation of such Act and may require that the certificates evidencing such
Stock bear an appropriate legend restricting transfer.

           If the Participant's legal representative exercises an Award, the
Company will be under no obligation to deliver Stock pursuant to such exercise
until the Company is satisfied as to the authority of such representative.

           8.4       Tax Withholding.

           The Company will withhold from any cash payment made pursuant to an
Award an amount sufficient to satisfy all federal, state and local withholding
tax requirements (the "withholding requirements").

           In the case of an Award pursuant to which Stock may be delivered, the
Committee will have the right to require that the Participant or other
appropriate person remit to the Company an amount sufficient to satisfy the
withholding requirements, or make other arrangements satisfactory to the
Committee with regard to such requirements, prior to the delivery of any Stock.
If and to the extent that such withholding is required, the Committee may permit
the Participant or such other person to elect at such time and in such manner as
the Committee provides to have the Company hold back from the shares to be
delivered, or to deliver to the Company, Stock having a value calculated to
satisfy the withholding requirement. The Committee may also, but need not,
permit a Participant to tender previously owned shares of Stock in satisfaction
of tax withholding requirements on any Award.

           If at the time an ISO is exercised the Committee determines that the
Company could be liable for withholding requirements with respect to a
disposition of the Stock received upon exercise, the Committee may require as a
condition of exercise that the person exercising the ISO agree (a) to inform the
Company promptly of any disposition (within the meaning of section 425(c) of the
Code) of Stock received upon exercise, and (b) to give such security as the
Committee deems adequate to meet the potential liability of the Company for the
withholding requirements and to augment such security from time to time in any
amount reasonably deemed necessary by the Committee to preserve the adequacy of
such security.

           8.5       Nontransferability of Awards.

           No Award (other than an Award in the form of an outright transfer of
cash or unrestricted Stock) may be transferred other than by will or by the laws
of descent and distribution, and during an employee's lifetime an Award
requiring exercise may be exercised only by the Participant (or in the event of
the Participant's incapacity, the person or persons legally appointed to act on
the Participant's behalf).

           8.6       Adjustments in the Event of Certain Transactions.

           (a) In the event of a stock dividend, stock split or combination of
shares, recapitalization or other change in the Company's capitalization, or
other distribution to common stockholders other than normal cash dividends, the
Committee will make any appropriate adjustments to the maximum number of shares
that may be delivered under the Plan under Section 4 above, and adjustments in
the maximum share limits in Section 4 provided, that no such adjustment shall be
made to the maximum share limits described in Section 4 or otherwise to an Award
intended to be eligible for the performance-based exception under Section 162(m)
of the Code, except to the extent consistent with that exception, nor shall any
change (without the consent of the Participant) be made to ISO's except to the
extent consistent with their continued qualification under Section 422 of the
Code.

                                      12A
<PAGE>   13

           (b) In any event referred to in paragraph (a), the Committee will
also make any appropriate adjustments to the number and kind of shares of stock
or securities subject to Awards then outstanding or subsequently granted, any
exercise prices relating to Awards and any other provision of Awards affected by
such change. The Committee may also make such adjustments to take into account
material changes in law or in accounting practices or principles, mergers,
consolidations, acquisitions, dispositions or similar corporate transactions, or
any other event, if it is determined by the Committee that adjustments are
appropriate to avoid distortion in the operation of the Plan.

           8.7.      Employment or Other Rights.

           Neither the adoption of the plan nor the grant of Awards will confer
upon any person any right to continued employment with the Company or any
subsidiary or affect in any way the right of the Company or subsidiary to
terminate an employment relationship at any time. Except as specifically
provided by the Committee in any particular case, the loss of existing or
potential profit in Awards granted under the Plan will not constitute an element
of damages in the event of termination of an employment or other service
relationship even if the termination is in violation of an obligation of the
Company to the Participant.

           8.8.      Fair Market Value.

           For purposes of the Plan, fair market value of a share of Stock on
any date will be the price at the close of the most recent trading day in the
over-the-counter market with respect to such Stock, as reported by the National
Association of Securities Dealers, Inc. Automated Quotations System or such
other similar system then in use; or, if on any such date such Stock is not
quoted by any such organization, the average of the closing bid and asked prices
with respect to such Stock, as furnished by a professional market maker making a
market in such Stock selected by the Committee; or if such prices are not
available, the fair market value of such Stock as of such date as determined in
good faith by the Committee; or, where necessary in order to achieve the
intended Federal income tax result, the value of a share of Stock as determined
by the Committee in accordance with the applicable provisions of the Code.

           8.9       Deferral of Payments.

           The Committee may agree at any time, upon request of the Participant,
to defer the date on which any payment under an Award will be made.

           8.10.     Past Services as Consideration.

           Where a Participant purchases Stock under an Award for a price equal
to the par value of the Stock the Committee may determine that such price has
been satisfied by past services rendered by the Participant.

9.         EFFECT, DISCONTINUANCE, CANCELLATION, AMENDMENT AND TERMINATION

           Neither adoption of the Plan nor the grant of Awards to a Participant
will affect the Company's right to grant to such Participant awards that are not
subject to the Plan, to issue to such Participant Stock as a bonus or otherwise,
or to adopt other plans or arrangements under which Stock be issued to
Employees.

           The Committee may at any time discontinue granting Awards under the
Plan. The Board may at any time or times amend the Plan or any outstanding Award
for any purpose which may at the time be permitted by law, or may at any time
terminate the Plan as to any further grants of Awards, provided that (except to
the extent expressly required or permitted by the Plan) no such amendment will,
without the approval of the stockholders of the Company effectuate a change for

                                      13A
<PAGE>   14

which stockholder approval is required in order for the Plan to continue to
qualify under Section 422 of the Code and for Awards to be eligible for the
performance-based exception under Section 162(m) of the Code, and no amendment
or termination of the Plan may adversely affect the rights of any Participant
(without the Participant's consent) under any Award previously granted.

10.        GOVERNING LAW.

           The Plan shall be construed in accordance with the General
Corporation Law of the State of Delaware.

                                      14A<PAGE>   1
                                  EXHIBIT 10.24

                             PICTURETEL CORPORATION

             FOREIGN SUBSIDIARY EMPLOYEE STOCK PURCHASE FOREIGN PLAN

1.         PURPOSE

           The PictureTel Corporation Foreign Subsidiary Employee Stock Purchase
Plan (the "Foreign Plan") is designed to encourage and assist employees of such
foreign subsidiaries of PictureTel Corporation (the "Company") as the Company's
Board of Directors (the "Board") may from time to time designate ("Participating
Subsidiary") to acquire an equity interest in the Company through the purchase
of shares of Common Stock, $.0l par value, of the Company ("Common Stock").

2.         ADMINISTRATION OF THE FOREIGN PLAN

           The Foreign Plan shall be administered by a committee (the
"Committee") of the Board designated by the Board for that purpose. Unless and
until a Committee is appointed, the Foreign Plan shall be administered by the
Board, in which case all references herein to the "Committee" shall be deemed to
be references to the "Board". The Committee shall supervise the administration
and enforcement of the Foreign Plan according to its terms and provisions and
shall have all powers necessary to accomplish these purposes and discharge its
duties hereunder including, without limitation, the power to (i) employ and
compensate agents of the Committee for the purpose of administering the accounts
of participating employees, (ii) construe or interpret the Foreign Plan, (iii)
determine all questions of eligibility and (iv) compute the amount and determine
the manner and time of payment of all benefits according to the Foreign Plan.
The Committee's determinations hereunder shall be final and binding.

           If the Committee in its discretion so elects, it may retain a
brokerage firm, bank, or other institution to assist in the purchase of shares,
delivery of reports, or other administrative aspects of this Foreign Plan. If
the Committee so elects, each Participant shall (unless prohibited by the laws
of the jurisdiction of such Participant's employment or residence) be deemed
upon enrollment in this Foreign Plan to have authorized the establishment of an
account on such Participant's behalf at such institution. Shares purchased by
the Participant under this Foreign Plan shall be held in the account in the name
in which the shares certificate would otherwise be issued.

3.         NATURE AND NUMBER OF SHARES TO BE DELIVERED

           The Common Stock subject to issuance under the terms of the Foreign
Plan shall be authorized but unissued shares or previously issued shares
reacquired and held by the Company. The aggregate number of shares that may be
delivered under the Foreign Plan shall not exceed 500,000 shares of Common
Stock, subject to adjustment under this Section.

           In the event of any reorganization, recapitalization, stock split,
reverse stock split, stock dividend, combination of shares, merger,
consolidation, or other similar change in the capital structure of the Company,
the Committee may make such adjustment, if any, as it deems appropriate in the
number, kind and purchase price of the shares available for purchase under the
Foreign Plan and in the maximum number of shares which may be issued under the
Foreign Plan, subject to the approval of the Board.

<PAGE>   2

4.         ELIGIBILITY REQUIREMENTS

           Each employee of a Participating Subsidiary, except those employees
described in paragraphs (i) through (iv) below, shall be eligible to participate
in the Foreign Plan pursuant to Section 5. ("Eligible Employee").

The following employees are not eligible to participate in the Foreign Plan:

               (i)   Employees who, immediately upon enrollment in the Foreign
           Plan, own directly or indirectly, or hold options or rights to
           acquire, an aggregate of 5% or more of the total combined voting
           power or value of all outstanding shares of all classes of the
           Company or any Subsidiary;

               (ii)  Employees who have not completed at least 6 months of
           service with the Participating Subsidiary as of an Enrollment Date;
           and

               (iii) Employees who are prohibited by the laws of the
           jurisdiction of their residence or employment from participation
           herein.

               (iv)  Employees who are employed by a corporation as to which the
           Board does not take action within ninety (90) days after such
           corporation becomes a subsidiary of the Company to include such
           corporation as a Participating Subsidiary.

5.         PARTICIPATION PROCESS

           Each employee who will be an Eligible Employee on the first day of an
Option Period may voluntarily elect to participate in the Foreign Plan by
executing and delivering a payroll deduction authorization in accordance with
Section 6.1. Upon such election, the Eligible Employee will be deemed to be a
participant ("Participant") on the first day of such Option Period and will
remain a Participant until his or her participation is terminated as provided in
the Foreign Plan. For purposes of the Foreign Plan, an "Option Period" is
defined as any of the six month periods beginning September 1, 1999 or any March
1 or September 1 thereafter.

6.         ENROLLMENT AND WITHDRAWAL

           6.1 ENROLLMENT. Each Eligible Employee may enroll or re-enroll in the
Foreign Plan, as the case may be, as of the first day of any Option Period after
the employee first becomes eligible to participate (the "Enrollment Date"). To
enroll or re-enroll, an Eligible Employee must complete and sign an enrollment
form and submit it to the Human Resources Department of the Participating
Subsidiary at least fifteen (15) days prior to the Enrollment Date with respect
to which the election is effective. Participation in the Foreign Plan is
voluntary.

           6.2 WITHDRAWAL. Any Participant may cancel all (BUT NOT LESS THAN
ALL) of his or her Options at any time prior to the exercise thereof by
notifying the Human Resources Department of the Participating Subsidiary in
writing at any time prior to the Purchase Date (as such term is defined in
Section 9 herein), except that such notification will be effective no later than
the close of the first complete pay period following receipt by the Human
Resources Department of the Participating Subsidiary (or such other period
established in writing by the Company's Corporate Human Resources Department).
It shall be the responsibility of the Participant to ensure that any such
notification is actually received by the Human Resources Department of the
Participating Subsidiary. Upon the effective date of any such cancellation, the
entire amount credited to the Participant's account in accordance with Section 7
will be returned to the Participant without interest. Any Participant who
cancels an Option may at any time thereafter become a Participant with respect
to future Option Periods, in accordance with Section 6.1.

<PAGE>   3

7.         METHOD OF PAYMENT

           7.1 PAYROLL WITHHOLDING. Payment for shares is to be made in
installments through payroll deductions over the Option Period, with the first
such deduction commencing with the first payroll period ending after the
Enrollment Date.

           Subject to the limits in Section 8, each Participant may authorize
withholding in each pay period in an amount NOT LESS THAN ONE PERCENT (1%) AND
NOT MORE THAN TEN PERCENT (10%) of his or her Compensation by means of
substantially equal payroll deductions over the Option Period; provided that the
Committee may from time to time before an Enrollment Date, establish limits
other than those herein described for all purchases to occur during the relevant
Option Period. FOR PURPOSES OF THE FOREIGN PLAN, "COMPENSATION" WILL MEAN ALL
REGULAR BASE SALARY PAYMENTS MADE TO THE PARTICIPANT BY THE PARTICIPATING
SUBSIDIARY.

           A Participant may increase or decrease the rate of withholding
effective as of the first day of any future Option Period by giving fifteen (15)
days prior written notice to the Human Resources Department of the Participating
Subsidiary. A Participant may terminate his or her payroll deduction
authorization as of any date before the Purchase Date by notifying the Human
Resources Department of the Participating Subsidiary in writing, and such
Participant will thereby cease to participate in the Foreign Plan as of that
date and will be deemed to have canceled his or her Option pursuant to Section
6.2.

           7.2 ACCOUNTS. All amounts withheld under Section 7.1 in accordance
with a Participant's payroll deduction authorization will be credited in local
currency to an account maintained for such Participant. The Company and the
Participating Subsidiary shall be entitled to use the withholdings for any
purpose, shall have no obligation to pay interest on amounts credited to a
Participant's account, and shall not be obligated to segregate withholdings.

           7.3 LIMIT ON PURCHASE. In no event shall the rights of any
Participant to purchase shares (under this Foreign Plan and under any other
Stock Purchase Plans of the Company or any Subsidiary), accrue at a rate which
exceeds $25,000 U.S. of fair market value of such shares (determined as of the
applicable Grant Date, as defined in Section 9) in any calendar year.

8.         GRANT OF RIGHT TO PURCHASE SHARES

           Each person who is a Participant on the first day of an Option Period
will be granted an Option for such Option Period for the purchase of the number
of whole shares of Common Stock as determined by dividing (i) the balance in the
Participant's local currency withholding account converted to U.S. dollars on
the last day of the Option Period, by (ii) the U.S. dollar purchase price per
share of the Common Stock determined under Section 9. The Grant Date and the
Purchase Date (as such terms are defined in Section 9) shall constitute the date
of grant and the date of exercise, respectively.

9.         PURCHASE OF SHARES

           Each Eligible Employee who is a Participant in the Foreign Plan on
the last trading day of an Option Period and who has not cancelled his or her
option will be deemed to have exercised on that day the Option granted to him or
her for that Option Period. Upon exercise, the local currency amounts then
credited to the Participant's account will be converted to U.S. dollars and used
to purchase the whole shares of Common Stock determined in accordance with
Section 8, and as soon as practicable thereafter certificates for such shares
will be issued and delivered to the Participant's account established pursuant
to Section 2, above (unless prohibited by the laws of the jurisdiction of such
Participant's employment or residence). Fractional shares will not be issued.
The cost to the Participant for the shares purchased shall be 85% of the lower
of (i) the fair market value of Common Stock on the first trading day of the
respective

<PAGE>   4

Option Period (the "Grant Date"), or (ii) the fair market value of Common Stock
on the last trading day of the respective Option Period (the "Purchase Date").

           Fair market value on any date shall mean the average of the high and
low sale prices (or the bid and asked prices if no sales are reported) with
respect to the Common Stock for that date, as reported by the principal exchange
on which the Common Stock is traded or by the National Association of Securities
Dealers, Inc. Automated Quotations System or such other similar system then in
use; or, if on any such date the Common Stock is not quoted by any such
organization, the average of the closing bid and asked prices with respect to
the Common Stock, as furnished by a professional market maker making a market in
the Common Stock selected by the Board and if not available, the fair market
value of the Common Stock as of such day as determined in good faith by the
Board. A good faith determination by the Board of Directors as to fair market
value shall be final and binding.

           The balance of the Participant's withholding account, if any,
following exercise shall be returned to the Participant without interest;
PROVIDED, HOWEVER, that if the balance left in the account consists solely of an
amount equal to the value of a fractional share, such fractional-share amount
will be retained in the withholding account and carried over to the next Option
Period. The entire balance of the Participant's-withholding account following
the final Option Period shall be returned to the Participant without interest.

10.        TERMINATION OF EMPLOYMENT

           Subject to Section 11, upon termination of a Participant's employment
with the Participating Subsidiary for any reason, the individual will (a) cease
to be a Participant, (b) forfeit any Option held under the Foreign Plan (and all
such options will be deemed canceled), (c) be entitled to a return of the
balance of his or her withholding account without interest, and (d) have no
further rights under the Foreign Plan.

11.        DEATH OF A PARTICIPANT

           A Participant may file a written designation of beneficiary on the
Participant's enrollment form, specifying who is to receive any Common Stock and
/ or cash credited to the Participant under the Foreign Plan in the event of the
Participant's death, which designation will also provide for the election by the
Participant of either (i) cancellation of the Participant's Option upon his or
her death, as provided in Section 6.2 or (ii) application as of the last day of
the Option Period of the balance of the deceased Participant's withholding
account at the time of death to the exercise of his or her Option, pursuant to
Section 9 of the Foreign Plan. In the absence of a valid election otherwise, the
death of a Participant will be deemed to effect a cancellation of his or her
Option. A designation of beneficiary and election may be changed by the
Participant at any time, by written notice to the Human Resources Department of
the Participating Subsidiary.

           In the event of the death of a Participant and receipt by the Human
Resources Department of the Participating Subsidiary of proof of the identity
and existence at the Participant's death of a beneficiary validly designated by
him or her under the Foreign Plan, the Company will deliver to such beneficiary
any Common Stock and / or cash to which the beneficiary is entitled under the
Foreign Plan. In the event of the death of a Participant and in the absence of a
beneficiary validly designated under the Foreign Plan who is living at the time
of such Participant's death, the Company will deliver such Common Stock and / or
cash to the executor or administrator of the estate of the Participant, if the
Company is able to identify such executor or administrator. If the Company is
unable to identify such administrator or executor, the Company, in its
discretion, may deliver such stock and / or cash to the spouse or to any one or
more dependents of a Participant as the Company may determine. No beneficiary
will, prior to the death of the Participant by whom he has been designated,
acquire any interest in any Common Stock or cash credited to the Participant
under the Foreign Plan.

<PAGE>   5

12.        ASSIGNMENT

           The rights of a Participant under the Foreign Plan may not be sold,
pledged, assigned or transferred in any manner. If this provision is violated,
the Participant's election to purchase Common Stock shall terminate and the only
obligation of the Company remaining under the Foreign Plan will be to pay to the
person entitled thereto the amount then credited to his or her account. No
Participant may create a lien on any funds, securities, rights or other property
held for the account of the Participant under the Foreign Plan, except to the
extent that there has been a designation of beneficiaries in accordance with the
Foreign Plan. A Participant's right to purchase shares under the Foreign Plan
shall be exercisable during the Participant's lifetime only by the Participant.

13.        COSTS

           All costs and expenses incurred in administering the Foreign Plan
shall be paid by the Company; except that any stamp duties or transfer taxes
applicable to participation in the Foreign Plan may be charged to the account of
such Participant. Any brokerage fees for the resale of the Common Stock by a
Participant shall be borne by the Participant.

14.        REPORTS

           Annually, the Company shall provide or cause to be provided to each
Participant a report of his or her contributions and the shares of Common Stock
purchased with such contributions by that Participant on each Purchase Date.

15.        RIGHTS AS STOCKHOLDER

           A Participant will have no rights as a stockholder under the election
to purchase until he becomes a stockholder as herein provided. A Participant
will become a stockholder with respect to shares for which payment has been
completed as provided in Section 9 at the close of business on the last business
day of the Option Period.

16.        MODIFICATION AND TERMINATION

           The Board may terminate the Foreign Plan at any time, provided
however, the Plan will in any event automatically terminate ten years from the
date the shareholders approve the Foreign Plan. The Board may amend the Foreign
Plan at any time for any purpose permitted by law, PROVIDED that no amendment
shall be effective unless within one year after it is adopted by the Board it is
approved by the holders of a majority of the outstanding shares present and
entitled to vote on the matter, if such amendment would:

                     (i)   increase the number of shares reserved for purchase
           under the Plan;

                     (ii)  change the designation of corporations whose
           employees may be offered rights to purchase shares under the Plan;
           provided, that a corporation's becoming or ceasing to be a
           Subsidiary, or the exercise by the Committee of its discretion under
           Section 4(iv), shall not be deemed a change in designation under this
           paragraph ;

                     (iii) materially increase the benefits to Participants;

                     (iv)  materially modify the requirements for participation;
           or
<PAGE>   6

           In the event the Foreign Plan is terminated, the Committee may elect
to terminate all outstanding rights to purchase shares under the Foreign Plan
either immediately or upon completion of the purchase of shares on the next
Purchase Date, unless the Committee has determined that the right to make all
such purchases shall expire on some other designated date occurring prior to the
next Purchase Date. If the rights to purchase shares under the Foreign Plan are
terminated prior to expiration, all funds contributed to the Foreign Plan that
have not been used to purchase shares shall be returned to the Participants
without interest.

           If at any time the number of shares of Common Stock authorized for
purchase under the Foreign Plan is less than the purchases to be made, the
purchases shall be reduced proportionately to eliminate the excess.

17.        BOARD APPROVAL; EFFECTIVE DATE

           This Foreign Plan was adopted by the Board on March 3, 1999 and shall
be effective as of the date the shareholders approve the Foreign Plan

18.        CONDITIONS ON THE DELIVERY OF COMMON STOCK

           Neither the Company nor any Participating Subsidiary will be
obligated to deliver any shares of Common Stock pursuant to the Foreign Plan or
to remove restrictions from shares previously delivered under the Foreign Plan
(a) until, in the opinion of the Company's counsel, all applicable federal and
state laws and regulations have been complied with, and all applicable local
laws in any jurisdiction outside the United States have been complied with, (b)
if the outstanding Common Stock is at the time listed on any stock exchange,
until the shares to be delivered have been listed or authorized to be listed on
such exchange upon official notice of notice of issuance, and (c) until all
other legal matters in connection with the issuance and delivery of such shares
have been approved by the Company's counsel. If the sale of Common Stock has not
been registered under the Securities Act of 1933, as amended, or under the
securities laws of any other jurisdiction, the Company may require, as a
condition to the delivery of Common Stock under the Foreign Plan, such
representations or agreements as counsel for the Company may consider
appropriate to avoid violation of the Securities Act of 1933, as amended, or
laws of jurisdictions outside the United States and may require that the
certificates evidencing such Common Stock bear an appropriate legend restricting
transfer.

19.        OTHER PROVISIONS

           The agreements to purchase shares of Common Stock under the Foreign
Plan may contain such other provisions as the Committee shall deem advisable,
provided that no such provision shall in any way be in conflict with the terms
of the Foreign Plan.

20.        EMPLOYMENT RIGHTS

           Nothing contained in the provisions of the Foreign Plan shall be
construed to give to any individual the right to be retained in the employ of
the Company or any Subsidiary or to interfere with the right of the Company or
any Subsidiary to discharge any employee at any time.

21.        APPLICABLE LAW.

           This Foreign Plan shall governed by and construed in accordance with
the substantive laws (excluding the conflict of laws rules) of the Commonwealth
of Massachusetts.

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