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                                                                    EXHIBIT 99.1

                      NETWORK EQUIPMENT TECHNOLOGIES, INC.
                             1993 Stock Option Plan

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                      NETWORK EQUIPMENT TECHNOLOGIES, INC.
                             1993 STOCK OPTION PLAN

                                TABLE OF CONTENTS

                                                                          
ARTICLE ONE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2

GENERAL PROVISIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
I.       PURPOSES OF PLAN . . . . . . . . . . . . . . . . . . . . . . . . .   2
II.      ADMINISTRATION OF PLAN . . . . . . . . . . . . . . . . . . . . . .   2
III.     STOCK SUBJECT TO PLAN  . . . . . . . . . . . . . . . . . . . . . .   3

ARTICLE TWO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5

DISCRETIONARY OPTION GRANTS . . . . . . . . . . . . . . . . . . . . . . . .   5
I.       ELIGIBILITY FOR OPTION GRANTS  . . . . . . . . . . . . . . . . . .   5
II.      TERMS AND CONDITIONS OF OPTIONS  . . . . . . . . . . . . . . . . .   5
III.     INCENTIVE OPTIONS  . . . . . . . . . . . . . . . . . . . . . . . .   8
IV.      CORPORATE TRANSACTION  . . . . . . . . . . . . . . . . . . . . . .   9
V.       CANCELLATION AND REGRANT OF OPTIONS  . . . . . . . . . . . . . . .  10
VI.      STOCK APPRECIATION RIGHTS; HOSTILE TAKE-OVER;
         CHANGE OF CONTROL  . . . . . . . . . . . . . . . . . . . . . . . .  10


ARTICLE THREE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13

AUTOMATIC OPTION GRANT PROGRAM  . . . . . . . . . . . . . . . . . . . . . .  13
I.       ELIGIBILITY  . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
II.      TERMS AND CONDITIONS OF AUTOMATIC OPTION GRANTS  . . . . . . . . .  13
III.     CORPORATE TRANSACTION/CHANGE IN CONTROL/HOSTILE TAKE-OVER  . . . .  16
IV.      AMENDMENT OF THE AUTOMATIC GRANT PROVISIONS  . . . . . . . . . . .  17


ARTICLE FOUR  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18

MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
I.       AMENDMENT OF PLAN  . . . . . . . . . . . . . . . . . . . . . . . .  18
II.      TAX WITHHOLDING  . . . . . . . . . . . . . . . . . . . . . . . . .  18
III.     TERM OF PLAN . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
IV.      USE OF PROCEEDS  . . . . . . . . . . . . . . . . . . . . . . . . .  19
V.       REGULATORY APPROVALS . . . . . . . . . . . . . . . . . . . . . . .  19
VI.      NO EMPLOYMENT/SERVICE RIGHTS . . . . . . . . . . . . . . . . . . .  19
VII.     MISCELLANEOUS PROVISIONS . . . . . . . . . . . . . . . . . . . . .  20



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                      NETWORK EQUIPMENT TECHNOLOGIES, INC.
                             1993 STOCK OPTION PLAN

                                   ARTICLE ONE

                               GENERAL PROVISIONS

                 I.       PURPOSES OF PLAN

                 A. This 1993 Stock Option Plan (the "Plan") is adopted as of
August 11, 1993 (the "Effective Date") to promote the interests of Network
Equipment Technologies, Inc., a Delaware corporation (the "Corporation"), by
allowing eligible individuals to acquire or increase proprietary interests in
the Corporation as an incentive to remain in the service of the Corporation (or
its "parent" or "subsidiary" corporations, as defined in Section 424 of the
Internal Revenue Code).

                 B. This Plan is the successor to the Network Equipment
Technologies, Inc. 1983 Stock Option Plan (the "1983 Plan"). No options shall be
granted under the 1983 Plan from and after the Effective Date. The terms and
conditions of options granted under the 1983 Plan before the Effective Date are
not affected by the adoption of this Plan.

                 II.      ADMINISTRATION OF PLAN

                 A. This Plan shall be administered by a committee (the "Plan
Administrator" or "Committee") of two or more non-employee Directors appointed
by the Corporation's Board of Directors (the "Board"). No Director may serve on
the Committee if within 12 months before appointment, he or she has received an
option grant or stock issuance under this Plan or any other stock plan of the
Corporation or any parent or subsidiary, other than pursuant to the Automatic
Option Grant Program set forth in Article Three of this Plan. Committee members
shall serve for such periods as the Board may determine and may be removed by
the Board at any time.

                 B. The Plan Administrator shall have full authority (subject to
the provisions of this Plan) to establish such rules and regulations as it deems
appropriate for the proper administration of this Plan and to make such
determinations and interpretations concerning this Plan and options granted
under this Plan as it deems necessary or advisable. Decisions of the Plan
Administrator shall be final and binding upon all parties.


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                 C. The Plan Administrator shall have full authority to grant
options pursuant to Article Two of this Plan and to determine in its sole
discretion which eligible individuals are to receive such options, the number of
shares to be covered by each such option, whether each option is to be an
incentive stock option intended to satisfy the requirements of Section 422 of
the Internal Revenue Code ("Incentive Option") or a non-statutory option not
intended to satisfy those requirements, the time(s) at which each option is to
become exercisable, and the maximum term for which each option is to be
outstanding.

                 III.     STOCK SUBJECT TO PLAN

                 A. An aggregate of 7,406,415 shares of the Corporation's common
stock, par value $0.01 per share ("Common Stock") is available for issuance
under this Plan, subject to adjustment from time to time in accordance with this
Section III. These shares may be authorized but unissued shares of Common Stock
or re acquired shares of Common Stock, including shares repurchased by the
Corporation on the open market. The number of shares of Common Stock available
for issuance under this Plan shall be reduced, share-for-share, by the number of
shares issued with respect to options granted under the 1983 Plan that are
outstanding at the Effective Date and are subsequently exercised.

                 B. To the extent that an option granted under this Plan or the
1983 Option Plan expires or terminates for any reason before exercise in full
(including any option canceled in accordance with the cancellation-regrant
provisions of Section V of Article Two of this Plan), the shares then subject to
the option shall again be available for option grants under this Plan. Shares
subject to any option or portion thereof surrendered or canceled in accordance
with Section VI of Article Two and Section III of Article Three, and shares
repurchased by the Corporation pursuant to any repurchase rights available under
this Plan, shall not again become available for option grants under this
Plan. If the exercise price of an option granted under this Plan (or the 1983
Plan) is paid with shares of Common Stock, or if shares of Common Stock
otherwise issuable under this Plan are withheld by the Corporation in
satisfaction of withholding taxes incurred upon the exercise of an option, then
the number of shares available for issuance under this Plan shall be reduced by
the gross number of shares for which the option is exercised and not by the net
number of shares issued to the option holder.

                 C. If a change is made to the Common Stock by reason of any
stock split, stock dividend, recapitalization, combination of shares, or other
similar change, then appropriate adjustments shall be made to (i) the number
and/or class of shares issuable under this Plan, (ii) the number and/or class of
shares and price per share in effect under each then-outstanding option granted


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under this Plan (or the 1983 Plan), and (iii) the number of shares of Common
Stock to be made the subject of each subsequent automatic option grant under
Article Three of this Plan. The purpose of adjustments to outstanding options
shall be to preclude the enlargement or dilution of rights and benefits under
such options. The adjustments determined by the Plan Administrator shall be
final, binding, and conclusive.

                 D. The Corporation may not issue stock options covering in the
aggregate more than 350,000 shares of Common Stock (subject to adjustments as
required under Article V(C) above) to any one participant in any one-year
period.


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                                   ARTICLE TWO

                           DISCRETIONARY OPTION GRANTS

                 I.       ELIGIBILITY FOR OPTION GRANTS

                 The following persons are eligible to participate in the
Discretionary Option Grant Program under Article Two of this Plan:

                 A. Officers and other key employees of the Corporation (or its
parent or subsidiary corporations) whose services contribute to the management,
growth, and financial success of the Corporation (or its parent or subsidiary
corporations), and

                 B. Those consultants and independent contractors who provide
valuable services to the Corporation (or its parent or subsidiary corporations).

                 II.      TERMS AND CONDITIONS OF OPTIONS

                 Options granted pursuant to this Article Two may, at the Plan
Administrator's discretion, be either Incentive Options or non-statutory
options. Individuals who are not employees may be granted only non-statutory
options. Each option shall be evidenced by one or more written instruments in a
form approved by the Plan Administrator. Each such instrument shall comply with
the terms and conditions specified below. Each instrument evidencing an
Incentive Option shall also be subject to Section III of this Article Two.
Failure to issue, or (if agreement is required) to agree to, an instrument
evidencing an option shall not invalidate the option grant; however, the option
shall not be exercisable until a written instrument has been issued and (if
required) agreed to.

                 A.       Option Price.

                          1.      The option price per share shall be fixed by 
the Plan Administrator, but shall not be less than the "fair market value"
(defined below) per share of Common Stock on the date of the option grant.

                          2.      The option price shall, subject to Section III
below, be immediately due upon exercise of the option and shall be payable in
one or a combination of the following forms:


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                          (a)     cash or check payable to the Corporation;

                          (b)     shares of Common Stock held by the optionee 
for the period necessary to avoid a charge to the Corporation's earnings for
financial reporting purposes and valued at "fair market value" on the exercise
date; or

                          (c)     a broker-dealer sale-and-remittance procedure
pursuant to which the optionee shall provide irrevocable written instructions
(I) to a designated brokerage firm to effect the immediate sale of the option
shares and remit to the Corporation, from the sale proceeds available on the
settlement date, sufficient funds to cover the aggregate option price plus all
income and employment taxes required to be withheld by the Corporation in
connection with the exercise and (II) to the Corporation to deliver the
certificates for the purchased shares directly to the brokerage firm to
complete the transaction.

                          3.      The Plan Administrator may assist any optionee
(including any officer) in the exercise of any option granted under this Article
Two and the satisfaction of any federal and state income and employment tax
obligations arising therefrom, by (a) authorizing a loan to the optionee by the
Corporation or (b) permitting the optionee to pay the option price in
installments over a period of months or years. The terms of any loan or
installment method of payment (including the interest rate and terms of
repayment) will be established by the Plan Administrator in its sole discretion.
Loans and installment payments may be allowed with or without security or
collateral (other than to optionees who are consultants or independent
contractors, who must adequately secure any loan by collateral other than the
purchased shares), but the maximum credit available to the optionee shall not
exceed the sum of (i) the aggregate option price (less par value) of the
purchased shares plus (ii) any federal and state income and employment tax
liability incurred by the optionee in connection with the exercise of the
option.

                          4.      The "fair market value" per share of Common 
Stock on any relevant date shall be determined as follows:

                 (a) If the Common Stock is listed or admitted to trading on any
national stock exchange, then the fair market value shall be the closing selling
price per share of Common Stock on the date in question on the stock exchange
determined by the Plan Administrator to be the primary market for the Common
Stock, as officially quoted on the composite tape of transactions on that
exchange. If there is no reported sale of Common Stock on that exchange on the
date in question, the fair market value shall be the closing selling price on
the exchange on the next preceding date for which a closing selling price is
quoted.

                 (b) If the Common Stock is not listed or admitted to trading on
any national stock exchange, but is traded on the 


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NASDAQ National Market System, the fair market value shall be the closing
selling price per share of Common Stock on the date in question as reported on
that system. If there is no closing selling price for the Common Stock on the
date in question, then the fair market value shall be the closing selling price
for the next preceding date for which a closing selling price is quoted.

                 B.       Term and Exercise of Options.

                          1.      Each option granted under this Article Two 
shall be exercisable at such time(s), during such period, and for such number
of shares as shall be determined by the Plan Administrator and set forth in
the written instrument evidencing the option. No option granted under this
Article Two shall have a term in excess of ten years after the grant date.

                          2.      During the lifetime of the optionee, the 
option shall be exercisable only by the optionee and shall not be assignable or
transferable by the optionee otherwise than by will or by the laws of descent
and distribution following the optionee's death.

                          3.      Exercise of an option shall be effected by 
delivery to the Corporation of a written notice in a form approved by the Plan
Administrator specifying the number of shares as to which the option is being
exercised, accompanied by payment of the exercise price (or provision for
payment acceptable to the Plan Administrator), and containing such other
provisions as the Plan Administrator approves from time to time.

                 C.       Termination of Service.

                          1.      Except as otherwise approved by the Plan 
Administrator, if the optionee's service to the Corporation is terminated:

                          (a)     for cause, each then-outstanding option held 
by the optionee shall terminate immediately.

                          (b)     for any reason other than cause, death, or 
permanent disability, each then-outstanding option held by the optionee shall
expire no later than three months after the termination date.

                          (c)     by reason of permanent disability (as defined
in Section 22(e)(3) of the Internal Revenue Code), each then-outstanding
option held by the optionee shall expire no later than 12 months after the
termination date.

                          (d)     by reason of the optionee's death, or if the 
optionee dies during the three months following termination of his or her
employment other than for cause or by reason of permanent disability, each
then-outstanding option held by the optionee 


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shall expire no later than 12 months following the termination date. Following
the optionee's death, the option may be exercised by the personal representative
of the optionee's estate or by the person(s) to whom the option is transferred
pursuant to the optionee's will or in accordance with the laws of descent and
distribution.

                          2.      Under no circumstances shall any option be 
exercisable after the specified expiration date of the option term.

                          3.      Following termination of the optionee's
service, an option shall not be exercisable to any greater extent than on the
termination date; provided, however, that the Plan Administrator shall have
complete discretion, at any time while the option remains outstanding, to
permit the option to be exercised, not only with respect to the number of
shares for which the option is exercisable at the time of the termination, but
also with respect to one or more subsequent installments of purchasable shares
for which the option would otherwise have become exercisable had termination
not occurred.

                          4.      For purposes of this Plan:

                          (a)     An optionee shall be deemed to remain in 
service to the Corporation for so long as he or she is renders (or in the case
of consultants or advisors, has agreed to render) services on a periodic basis
to the Corporation (or any parent or subsidiary) as an employee, a non-employee
Director, or an independent consultant or advisor.

                          (b)     An optionee shall be considered to be an 
employee for so long as he or she remains in the employ of the Corporation (or
any parent or subsidiary) subject to the control and direction of the employer
entity as to the work to be performed and the manner and method of performance.

                 D.       Stockholder Rights.

                          An optionee shall have no stockholder rights with 
respect to any option shares until he or she has exercised the option and paid
(or made arrangements satisfactory to the Plan Administrator to pay) the option
price for the purchased shares.

                 III.     INCENTIVE OPTIONS

                 In addition to other application terms and conditions of this
Plan, the following provisions shall apply:

                 A.       Incentive Options may be granted only to employees.
Options specifically designated as "non statutory" options when issued shall not
be subject to this Section III.


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                 B. If any individual to whom an Incentive Option is granted is
the owner of stock (as determined under Section 424(d) of the Internal Revenue
Code) possessing 10% or more of the total combined voting power of all classes
of stock of the Corporation or any of its parent or subsidiary corporation ("10%
Stockholder"), then the option price per share shall not be less than 110
percent of the fair market value per share of Common Stock on the grant date,
and the option term shall not exceed five years from the grant date.

                 IV.      CORPORATE TRANSACTION

                 A.       In the event of any of the following stockholder-
approved transactions (a "Corporate Transaction"):

                          (i)     a merger or consolidation in which the
Corporation is not the surviving entity, except for a transaction whose
principal purpose is to change the State of the Corporation's incorporation,

                         (ii)     the sale, transfer, or other disposition of 
all or substantially all of the assets of the Corporation in liquidation or
dissolution, or

                        (iii)     any "reverse" merger in which the Corporation
is the surviving entity but in which securities possessing more than 50 percent
of the total combined voting power of the Corporation's outstanding securities
are transferred to holders other than those who owned such voting power
immediately before the merger, then immediately before the effective date of
the Corporate Transaction, each option granted under this Article Two shall
become fully exercisable ("accelerate") with respect to the total number of
shares of Common Stock then subject to the option. However, an option shall
not accelerate if and to the extent: (i) the option is, in connection with the
Corporate Transaction, either to be assumed by the successor corporation or
parent thereof or to be replaced by an equivalent option to purchase shares of
the capital stock of the successor corporation or parent thereof, or (ii)
acceleration of the option is subject to other limitations imposed by the Plan
Administrator at the time of grant. The determination of equivalence under
clause (i) above shall be made by the Plan Administrator and shall be final,
binding, and conclusive.

                 B. Upon the consummation of the Corporate Transaction, all
options granted under this Article Two shall terminate and cease to be
outstanding, except to the extent assumed by the successor (or surviving)
corporation or its parent company.

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                 C. Each option granted under this Article Two that is replaced
by an equivalent option in a Corporate Transaction or that otherwise continues
in effect shall be appropriately adjusted, immediately after the Corporation
Transaction, to apply to the number and class of securities that would have been
issued in the Corporate Transaction to an actual holder of the number of shares
of Common Stock that were subject to the option immediately before the Corporate
Transaction. Appropriate adjustment shall also be made to the option price
payable per share, provided the aggregate option price payable for such
securities shall remain the same. In addition, the class and number of
securities available for issuance under this Plan following the consummation of
the Corporate Transaction shall be appropriately adjusted.

                 D. The grant of options under this Article Two shall not affect
the right of the Corporation to adjust, reclassify, reorganize, or otherwise
change its capital or business structure or to merge, consolidate, dissolve,
liquidate, or sell or transfer all or any part of its business or assets.

                 V.       CANCELLATION AND REGRANT OF OPTIONS

                 The Plan Administrator may, at any time and from time to time,
with the consent of the affected optionees, cancel any or all outstanding
options granted under this Article Two and grant in substitution new options
covering the same or different numbers of shares of common Stock but having an
option price per share not less than the fair market value of the Common Stock
on the new grant date (or 110 percent of fair market value in the case of an
Incentive Option granted to a 10% Stockholder).

                 VI.      STOCK APPRECIATION RIGHTS; HOSTILE-TAKE OVER;         
                          CHANGE OF CONTROL

                 A. As determined by the Plan Administrator in its sole
discretion, one or more optionees may be granted the right, exercisable upon
such terms and conditions as the Plan Administrator may establish, to surrender
all or part of an unexercised option granted under this Article Two in exchange
for a payment by the Corporation of an amount equal to the excess of (i) the
fair market value (on the option surrender date) of the number of shares in
which the optionee is at the time vested under the surrendered option (or part
thereof) over (ii) the aggregate option price payable for those shares.

                 B. No surrender of an option shall be effective hereunder
unless it is approved by the Plan Administrator. If the surrender is approved,
then the payment to the optionee under this Section VI may be made in shares of
Common Stock valued at fair market value on the option surrender date, in cash,
or partly in 


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shares and partly in cash, as the Plan Administrator determines in its sole
discretion.

                 C. If the surrender of an option is rejected by the Plan
Administrator, then the optionee shall retain whatever rights he or she had
under the surrendered option (or surrendered portion thereof) on the option
surrender date and may exercise such rights at any time before the later
of (i) five business days after receipt of the rejection notice or (ii) the last
day on which the option is otherwise exercisable in accordance with its terms,
but in no event more than ten years after the date of the option grant.

                 D. Each officer of the corporation subject to the short-swing
profit restrictions of the Federal securities laws shall have the following
limited stock appreciation rights in tandem with each option received under this
Article Two. Upon the occurrence of a Hostile Take-Over, each option with such a
limited stock appreciation right in effect for at least six months shall
automatically be canceled and the optionee shall be entitled to a cash payment
by the Corporation in the amount of the excess of (i) the Take-Over Price of the
shares of Common Stock subject to the canceled option (whether or not the option
is otherwise exercisable for such shares over (ii) the aggregate exercise price
payable for such shares. The payment shall be made within five days after
consummation of the Hostile Take-Over. Neither the approval of the Plan
Administrator nor the consent of the Board shall be required in connection with
such option cancellation and cash payment.

                 1. A "Hostile Take--Over" shall be deemed to occur if (i) any
person or related group of persons (other than the Corporation or a person that
directly or indirectly controls, is controlled by, or is under common control
with, the Corporation) directly or indirectly acquires beneficial ownership
(within the meaning of Rule 13d-3 of the Exchange Act) of securities possessing
more than 50 percent of the total combined voting power of the Corporation's
outstanding securities pursuant to a tender or exchange offer that the Board
does not recommend that the Corporation's stockholders accept, and (ii)
more than 50 percent of the securities so acquired are accepted from holders
other than officers and directors of the Corporation subject to Section 16 of
the Exchange Act. The "Take-Over Price" per share shall be the greater
of (a) the fair market value per share on the date of cancellation, as
determined pursuant to the valuation provisions of Section II.A.4 of this
Article Two, or (b) the highest reported price per share paid in effecting such
Hostile Take-Over. However, if the canceled option is an Incentive Option, the
Take-Over Price shall not exceed the clause (a) price per share.

                 E. The Plan Administrator shall have full discretionary
authority, exercisable either in advance of, or at the time of, a Change in
Control, to provide for the automatic 


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acceleration of options granted under this Article Two upon the occurrence of
the Change in Control The Plan Administrator shall also have full discretionary
authority to condition any such acceleration upon the subsequent termination of
the optionee's service to the Corporation (or a parent or subsidiary) within a
specified period after the Change in Control. The Plan Administrator hereby
exercises such discretion to accelerate vesting of all outstanding options held
by Officers of the Corporation whose employment is terminated in conjunction
with or within a year of a Change of Control or Corporate Transaction. Any
option accelerated in connection with the Change in Control shall remain fully
exercisable until the expiration of the option term. For all purposes of this
Plan, a Change in Control shall mean a change in control of the Corporation of a
nature that would be required to be reported in response to Item 6(e) of
Schedule 14A of Regulation 14A promulgated under the Securities Exchange Act of
1934, as amended (the "Exchange Act"), whether or not the Corporation is then
subject to such reporting requirement, other than a Corporate Transaction;
provided that, without limitation, a Change in Control shall be deemed to have
occurred if:

                          (i)     any individual, partnership, firm, 
corporation, association, trust, unincorporated organization or other entity,
or any syndicate or group deemed to be a "person" under Section 14(d)(2) of
the Exchange Act, is or becomes the "beneficial owner" (as defined in Rule
13d-3 of the General Rules and Regulations under the Exchange Act), directly
or indirectly, of securities of the corporation representing 40 percent or
more of the combined voting power of the Corporation's then-outstanding
securities entitled to vote in the election of directors of the Corporation,
pursuant to a tender or exchange offer that the Board does not recommend that
the Corporation's stockholders accept; or

                        (ii)         during any period of two consecutive years,
individuals who at the beginning of such period constituted the Board and any
new members of the Board, whose election by the Board or nomination for
election by the Corporation's stockholders was approved by a vote of at least
three-quarters of the directors then 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.

                 F. The shares of Common Stock subject to any option surrendered
or canceled for an appreciation distribution pursuant to this Section VI shall
not be available for subsequent option grant under the Plan.


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                                  ARTICLE THREE

                         AUTOMATIC OPTION GRANT PROGRAM

                 I.  ELIGIBILITY

                 A. Eligible Optionees. The individuals eligible to
receive automatic option grants pursuant to this Article Three shall be limited
to (i) Directors who are first elected or appointed as non-employee Directors on
or after the Effective Date, whether through appointment by the Board or
election by the Corporation's stockholders, and who have not previously been
employees of the Corporation (or any parent or subsidiary corporation) and (ii)
Directors who continue to serve as non-employee Directors at one or more annual
stockholder meetings held while this Automatic Grant Program remains in effect,
commencing with the 1994 annual meeting.

                 B. Limitation. Except for the option grants to be made
pursuant to this Article Three (and any automatic grants made under the
corresponding provisions of the 1983 Plan), non-employee Directors shall
not be eligible to receive option grants or stock issuances under this
Plan or any other stock plan of the Corporation (or its parent or subsidiaries).

                 II.      TERMS AND CONDITIONS OF AUTOMATIC OPTION

                          GRANTS

                 A.       Grant Dates.  Option grants will be made under this 
Article Three on the dates specified below:

                          (i)     Each individual who first becomes a non-
employee Director at any time after the Effective Date, whether through election
at an annual stockholder meeting or through appointment by the Board, shall
automatically be granted upon the terms and conditions of this Article Three, at
the time of such initial election or appointment, a non-statutory stock option
to purchase the lesser of (a) 12,000 shares of Common stock or (b) a number of
shares of Common Stock equal to 12,000 multiplied by a fraction, the numerator
of which is the number of partial or whole calendar months remaining between
such election or appointment and the next scheduled annual stockholder meeting
at which such Director's term will expire and the denominator of which is 36.

                     (ii)         Each non-employee Director who first becomes
a member of an active standing committee of the Board at any time after the
Effective Date shall automatically be granted upon the 


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terms and conditions of this Article Three, at the time of such initial
appointment, a non-statutory stock option to purchase the lesser of (a) 4,000
shares of Common Stock or (b) a number of shares of Common stock equal to 4,000
multiplied by a fraction, the numerator of which is the number of partial or
whole calendar months remaining between such appointment and the next scheduled
annual stockholder meeting and the denominator of which is 12.

                    (iii) Each non-employee Director who first becomes chairman
of an active standing committee of the Board at any time after the Effective
Date shall automatically be granted upon the terms and conditions of this
Article Three, at the time of such initial appointment, a non-statutory stock
option to purchase the lesser of (a) 4,000 shares of Common Stock or (b) a
number of shares of Common Stock equal to 4,000 multiplied by a fraction, the
numerator of which is the number of partial or whole calendar months remaining
between such appointment and the next scheduled annual stockholder meeting and
the denominator of which is 12.

                     (iv) On the date of each annual stockholder meeting held
after the Effective Date, beginning with the 1994 annual stockholder meeting,
each non-employee Director who is at the time standing for reelection as a
non-employee Director shall automatically be granted a non-statutory stock
option under this Article Three to purchase 12,000 shares of Common Stock.

                      (v) On the date of each annual stockholder meeting held
after the Effective Date, beginning with the 1994 annual stockholder meeting,
each non-employee Director shall automatically be granted, whether or not he
or she is standing for re-election as a Director at that time, a non-statutory
stock option under this Article Three to purchase 4,000 shares of Common Stock
for each active standing committee on which he or she serves as a member plus
an additional 4,000 shares for each committee on which he or she serves as
chairman.

                 The 12,000-share limitation on the initial and periodic
automatic option grants and the 4,000-share limitation on committee grants to be
made to each non-employee Director shall be subject to adjustment pursuant to
Section III.C of Article One. For purposes of this Article Three, a committee
shall be deemed to be an active standing committee if so designated by the Board
and if it has met or transacted business within the 12 months preceding the date
of grant of an automatic option.

                 B.       Exercise Price.  The exercise price per share shall be
equal to 100 percent of the fair market value per share of Common Stock on the
automatic grant date.

                 C.       Payment.  The option price shall become immediately
due upon exercise of the option and shall be payable as provided in Section II.A
of Article Two.


N.E.T. 1993 SOP                                                 October 18, 1995
   16

                 D.       Option Term.  Each option granted under this Article
Three shall have a maximum term of ten years measured from the grant date.

                 E.       Exercisability.

                          1.      Each option granted under this Article Three 
shall be come exercisable for one-third of the option shares one year after
the date of grant and for the balance of the option shares in a series of 24
equal monthly installments beginning one month thereafter, provided the
optionee remains a Director through each such date.

                          2.      Each option granted under this Article Three 
shall also become fully exercisable upon the date of the optionee's cessation
of Board service by reason of death or retirement, provided the option has
been outstanding for at least one year, and the optionee has served on the
Board for at least three years, at the time of cessation of Board service.
A Director shall be deemed to have ceased Board service by reason of retirement
if he or she has attained the age of 65 at the time of the cessation.

                          3.      Each option shall remain exercisable until the
expiration or sooner termination of the option term.

                 F.       Non-Transferability. During the optionee's lifetime,
an option granted under this Article Three (together with the limited stock
appreciation right pertaining to the option) shall be exercisable only by the
optionee and shall not be assignable or transferable by the optionee otherwise
than by will or by the laws of descent and distribution following his or her
death.

                 G.       Effect of Termination of Board Membership.

                          1.      If a Director ceases to be a Board member for
any reason (other than death) while holding an option granted under this Article
Three, he or she shall have three months following the date of cessation of
Board membership in which to exercise the option for any or all of the shares of
Common Stock for which the option is exercisable at the time of the cessation.

                          2.      If a Director dies while serving as a Board 
member or during the three months following his or her cessation of Board
service, an option granted under this Article III may be exercised, for any or
all of the shares of Common Stock for which the option is exercisable at the
time of cessation of Board membership, by the personal representative of his or
her estate or by the person(s) to whom the option is transferred pursuant to the
Director's will or in accordance with the laws of descent and distribution. Any
such exercise must, however, occur within 12 months after the date of the
Director's death.

N.E.T. 1993 SOP                                                 October 18, 1995
   17

                          3.      In no event shall any option granted under 
this Article Three remain exercisable after the specified expiration date of its
ten-year term. Upon the expiration of the applicable exercise period in
accordance with subparagraphs 1 and 2 above or (if earlier) upon the expiration
of the ten-year option term, the option shall terminate and cease to be
exercisable.

                 H. Stockholder Rights. The holder of an option granted
under this Article Three shall have no stockholder rights with respect to any
option shares until he or she has exercised the option and paid (or made
arrangement satisfactory to the Plan Administrator to pay) the exercise price
for the purchased shares.

                 I. Remaining Terms. The remaining terms and conditions of each
option grant under this Article Three shall be as set forth in the form of
Director Automatic Grant Agreement attached as Exhibit A to this Plan.

         III. CORPORATE TRANSACTION/CHANGE IN CONTROL/HOSTILE TAKE-OVER

                 A. Each option granted under this Article Three that is
outstanding at the time of a Corporate Transaction or a Change in Control shall,
immediately before the specified effective date for the Corporation Transaction
or Change in Control, become fully exercisable with respect to the total number
of shares of Common Stock then subject to the option. Upon the consummation of
the Corporation transaction, all options granted under this Article Three shall
terminate.

                 B. Upon the occurrence of a Hostile Take-Over, each option that
has been outstanding under this Article Three for at least six months shall
automatically be canceled and the optionee shall be entitled to a cash payment
by the Corporation calculated in accordance with Section VI.D. of Article Two
and payable at the time and manner set forth in Section VI.E of Article Two.
Neither the approval of the Plan Administrator nor the consent of the Board
shall be required in connection with such option cancellation and cash payment.

                 C. The automatic option grants under this Article Three shall
in no way affect the right of the Corporation to adjust, reclassify, reorganize,
or otherwise change its capital or business structure or to merge, consolidate,
dissolve, liquidate or sell or transfer all or any part of its business or
assets.

                 D. The shares of Common Stock subject to each option canceled
in connection with a Hostile Take-Over shall not be available for subsequent
issuance under this Plan.


N.E.T. 1993 SOP                                                 October 18, 1995
   18

                 IV.      AMENDMENT OF THE AUTOMATIC GRANT PROVISIONS

                 The provisions of this Automatic Option Grant Program,
including any automatic option grants outstanding under this Article Three, may
not be amended more frequently than once every six months, other than to the
extent necessary to comply with applicable federal income tax laws and
regulations.


N.E.T. 1993 SOP                                                 October 18, 1995
   19







                                  ARTICLE FOUR

                                  MISCELLANEOUS

                 I.       AMENDMENT OF PLAN

                 The Board shall have complete and exclusive authority to amend
or modify this Plan in any or all respects whatsoever, subject to Section IV of
Article Three. However, no such amendment or modification shall, without the
consent of the optionees, adversely affect rights and obligations with respect
to options at the time outstanding under the Plan. In addition, the Board shall
not, without the approval of the Corporation's stockholders, (i) materially
increase the maximum number of shares issuable under this Plan, except for
permissible adjustments under Section III.C of Article One, (ii) materially
modify the eligibility requirements for the grant of options under this Plan or
(iii) otherwise materially increase the benefits accruing to participants under
this Plan.

                 II.      TAX WITHHOLDING

                 A. The Corporation's obligation to deliver shares or cash upon
exercise of options or stock appreciation rights granted under this Plan shall
be subject to the satisfaction of all federal, state, and local income and
employment tax withholding requirements.

                 B. The Plan Administrator may, in its discretion and upon such
terms and conditions as it deems appropriate (including the applicable
safe-harbor provisions of Rule 16b-3 of the Exchange Act) provide any or all
optionees under Article Two with the election to have the Corporation withhold,
from the shares of Common Stock otherwise issuable upon the exercise of options,
one or more shares with an aggregate fair market value equal to a designated
percentage (any whole multiple of five percent specified by the optionee) of the
federal and state income taxes ("Taxes") incurred in connection with the
acquisition of such shares. In lieu of direst withholding, optionees may be
granted the right to deliver shares of Common Stock to the Corporation in
satisfaction of such Taxes. The withheld or delivered shares shall be valued at
the fair market value on the applicable determination date for such Taxes or
such other date required by the applicable safe-harbor provisions of SEC Rule
16b-3.


N.E.T. 1993 SOP                                                 October 18, 1995
   20

                 III.     TERM OF PLAN

                 A. This Plan shall terminate upon the earlier of (i)
August 10, 2003 or (ii) the date on which all shares available for issuance
under this Plan have been issued pursuant to the exercise of options granted
under this Plan and (to the extent outstanding on the Effective Date) the 1983
Plan. If the date of termination is determined under clause (i) above, then no
options outstanding on such date shall be affected by the termination of this
Plan.

                 B. Options may be granted under this Plan to purchase shares of
Common Stock in excess of the number of shares then available for issuance under
this Plan, provided each option granted is not to become exercisable, in
whole or in part, at any time before stockholder approval of an amendment
authorizing a sufficient increase in the number of shares issuable under the
Plan.

                 IV.      USE OF PROCEEDS

                 Any cash proceeds received by the Corporation from the sale of
shares pursuant to options granted under this Plan may be used for general
corporate purposes.

                 V.       REGULATORY APPROVALS

                 A. The implementation of this Plan, the granting of any option
hereunder, and the issuance of stock upon the exercise or surrender of any such
option shall be subject to the procurement by the Corporation of all approvals
and permits required by regulatory authorities having jurisdiction over this
Plan, the options granted under it, and the stock issued pursuant to it.

                 B. No shares of Common Stock or other assets shall be issued or
delivered under this Plan unless and until there shall have been compliance with
all applicable requirements of federal and state securities laws, including the
filing and effectiveness of a Form S-8 registration statement for the shares of
Common Stock issuable under this Plan, and all applicable listing requirements
of any securities exchange on which stock of the same class is then listed.

                 VI.      NO EMPLOYMENT/SERVICE RIGHTS

                 Neither the action of the Corporation in establishing this
Plan, nor any action taken by the Plan Administrator hereunder, nor any
provision of the Plan, shall be construed so as 


N.E.T. 1993 SOP                                                 October 18, 1995
   21

to grant any individual the right to remain in the employ or service of the
Corporation (or any parent or subsidiary corporation) for any period, and the
Corporation (or any parent or subsidiary corporation retaining the services of
such individual) may terminate such individual's employment or service at any
time and for any reason, with or without cause.

         VII.  MISCELLANEOUS PROVISIONS

                 A.       Except as otherwise provided in this Plan, the right 
to acquire Common Stock or other assets under this Plan may not be assigned,
encumbered, or otherwise transferred by any optionee.

                 B.       The provisions of this Plan shall be governed by the 
laws of the State of California, as such laws are applied to contracts entered
into and performed in that State.

                 C.       The provisions of this Plan shall inure to the benefit
of, and be binding upon, the Corporation and its successors or assigns, and the
optionees, the legal representatives of their respective estates, their
respective heirs or legatees, and their permitted assignees.

                                      oOo                      

N.E.T. 1993 SOP                                                October 18, 1995