Document:

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                                                                    Exhibit 10.1

                              AVANT! CORPORATION
                     2000 STOCK OPTION/STOCK ISSUANCE PLAN

                                  ARTICLE ONE
                              GENERAL PROVISIONS

         I.    PURPOSE OF THE PLAN

               This 2000 Stock Option/Stock Issuance Plan is intended to
promote the interests of Avant! Corporation, a Delaware corporation, by
providing eligible persons with the opportunity to acquire a proprietary
interest, or otherwise increase their proprietary interest, in the Corporation
as an incentive for them to remain in the service of the Corporation.

               Capitalized terms shall have the meanings assigned to such
terms in the attached Appendix.

         II.   STRUCTURE OF THE PLAN

               A.  The Plan shall be divided into two separate equity programs:

                                    (i)   the Discretionary Option Grant

         Program under which eligible persons may, at the discretion of the Plan
         Administrator, be granted options to purchase shares of Common Stock,
         and

                                    (ii)  the Stock Issuance Program under
         which eligible persons may, at the discretion of the Plan
         Administrator, be issued shares of Common Stock directly, either
         through the immediate purchase of such shares or as a bonus for
         services rendered to the Corporation (or any Parent or Subsidiary).

               B.  The provisions of Articles One and Four shall apply to all
equity programs under the Plan and shall accordingly govern the interests of all
persons under the Plan.

         III.  ADMINISTRATION OF THE PLAN

               A.  The Board and the Primary Committee shall have the authority
to administer the Discretionary Option Grant and Stock Issuance Programs with
respect to Section 16 Insiders.

               B.  Administration of the Discretionary Option Grant and Stock
Issuance Programs with respect to all other persons eligible to participate in
these programs may, at the Board's discretion, be vested in the Primary
Committee or a Secondary Committee, or the Board may retain the power to
administer these programs with respect to all such persons. The members of the
Secondary Committee may be individuals who are Employees eligible to receive

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discretionary option grants or direct stock issuances under the Plan or any
stock option, stock appreciation, stock bonus or other stock plan of the
Corporation (or any Parent or Subsidiary).

               C.  Members of the Primary Committee or any Secondary Committee
shall serve for such period of time as the Board may determine and shall be
subject to removal by the Board at any time. The Board may also at any time
terminate the functions of any Secondary Committee and reassume all powers and
authority previously delegated to such committee.

               D.  The Plan Administrator shall, within the scope of its
administrative functions under the Plan, have full power and authority (subject
to the provisions of the Plan) to establish such rules and regulations as it may
deem appropriate for proper administration of the Discretionary Option Grant and
Stock Issuance Programs and to make such determinations under, and issue such
interpretations of, the provisions of such programs and any outstanding options
or stock issuances thereunder as it may deem necessary or advisable. Decisions
of the Plan Administrator within the scope of its administrative functions under
the Plan shall be final and binding on all parties who have an interest in the
Discretionary Option Grant or Stock Issuance Program under its jurisdiction or
any option or stock issuance thereunder.

               E.  Service on the Primary Committee or the Secondary Committee
shall constitute service as a Board member, and members of each such committee
shall accordingly be entitled to full indemnification and reimbursement as
Board members for their service on such committee. No member of the Primary
Committee or the Secondary Committee shall be liable for any act or omission
made in good faith with respect to the Plan or any option grants or stock
issuances under the Plan.

         IV.   ELIGIBILITY

               A.  The persons eligible to participate in the Discretionary
Option Grant and Stock Issuance Programs are as follows:

                         (i)    Employees,

                         (ii)   non-employee members of the Board or the board
         of directors of any Parent or Subsidiary, and

                         (iii)  consultants and other independent advisors who
         provide services to the Corporation (or any Parent or Subsidiary).

               B.  The Plan Administrator shall, within the scope of its
administrative jurisdiction under the Plan, have full authority to determine (i)
with respect to the option grants under the Discretionary Option Grant Program,
which eligible persons are to receive option grants, the time or times when such
option grants are to be made, the number of shares to be covered by each such
grant, the time or times at which each option is to become exercisable, the
vesting schedule (if any) applicable to the option shares and the maximum term
for which the option is to remain outstanding and (ii) with respect to stock
issuances under the Stock Issuance

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Program, which eligible persons are to receive stock issuances, the time or
times when such issuances are to be made, the number of shares to be issued to
each Participant, the vesting schedule (if any) applicable to the issued shares
and the consideration to be paid by the Participant for such shares.

               C.  The Plan Administrator shall have the absolute discretion
either to grant options in accordance with the Discretionary Option Grant
Program or to effect stock issuances in accordance with the Stock Issuance
Program.

         V.    STOCK SUBJECT TO THE PLAN

               A.  The stock issuable under the Plan shall be shares of
authorized but unissued or reacquired Common Stock, including shares repurchased
by the Corporation on the open market. The number of shares of Common Stock that
may be issued over the term of the Plan shall be equal to the sum of (i)
2,000,000 shares of Common Stock, and (ii) additional shares of Common Stock, to
the extent authorized by the Board, that are reacquired by the Corporation in
the open market or in private transactions after the Effective Date. All options
granted under the Plan will be Non-Statutory Options..

               B.  The number of shares of Common Stock available for issuance
under the Plan shall automatically increase by 500,000 shares on the first day
of each calendar year during the term of the Plan, beginning with the 2001
calendar year.

               C.  Shares of Common Stock subject to outstanding options shall
be available for subsequent issuance under the Plan to the extent (i) the
options expire, terminate or are forfeited for any reason prior to exercise in
full, (ii) the options are canceled in accordance with the cancellation-regrant
provisions of Article Two, Section IV, or (iii) the shares acquired upon
exercise are repurchased by the Corporation pursuant to its repurchase rights
under the Plan All other shares issued under the Plan shall reduce on a
share-for-share basis the number of shares of Common Stock available for
subsequent issuance under the Plan. In addition, should the exercise price of an
option under the Plan be paid with shares of Common Stock or should shares of
Common Stock otherwise issuable under the Plan be withheld by the Corporation in
satisfaction of the withholding taxes incurred in connection with the exercise
of an option or the vesting of a stock issuance under the Plan, then the number
of shares of Common Stock available for issuance under the Plan shall be reduced
only by the net number of shares of Common Stock issued to the holder of such
option or stock issuance and not by the gross number of shares for which the
option is exercised or which vest under the stock issuance.

               D.  Should any change be made to the Common Stock by reason of
any stock split, stock dividend, recapitalization, combination of shares,
exchange of shares or other change affecting the outstanding Common Stock as a
class without the Corporation's receipt of consideration, appropriate
adjustments shall be made to (i) the maximum number and/or class of securities
issuable under the Plan, (ii) the number and/or class of securities for which
the share reserve is to increase automatically each year, (iii) the number
and/or class of securities for

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which any one person may be granted options, separately exercisable stock
appreciation rights and direct stock issuances over the term of the Plan, and
(iv) the number and/or class of securities and the exercise price per share in
effect under each outstanding option in order to prevent the dilution or
enlargement thereof. The adjustments determined by the Plan Administrator shall
be final, binding and conclusive.

                                   ARTICLE TWO
                       DISCRETIONARY OPTION GRANT PROGRAM

         I.    OPTION TERMS

               Each option shall be evidenced by one or more documents in the
form approved by the Plan Administrator; PROVIDED, however, that each such
document shall comply with the terms specified below.

               A.  EXERCISE PRICE.

                   1.    The exercise price per share shall be fixed by the Plan
Administrator but shall not be less than eighty-five percent (85%) of the Fair
Market Value per share of Common Stock on the option grant date.

                   2.    The exercise price shall become immediately due upon
exercise of the option and shall, subject to the provisions of Section I of
Article Four and the documents evidencing the option, be payable in one or more
of the forms specified below:

                         (i)    cash or check made payable to the Corporation,

                         (ii)   shares of Common Stock held for the requisite
               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

                         (iii)  to the extent the option is exercised for vested
               shares, through a special sale and remittance procedure pursuant
               to which the Optionee shall concurrently provide irrevocable
               written instructions to (a) a Corporation-designated brokerage
               firm to effect the immediate sale of the purchased shares and
               remit to the Corporation, out of the sale proceeds available on
               the settlement date, sufficient funds to cover the aggregate
               exercise price payable for the purchased shares plus all
               applicable Federal, state and local income and employment taxes
               required to be withheld by the Corporation by reason of such
               exercise and (b) the Corporation to deliver the certificates for
               the purchased shares directly to such brokerage firm in order
               to complete the sale transaction.

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               Except to the extent such sale and remittance procedure is
utilized, payment of the exercise price for the purchased shares must be made on
the Exercise Date.

               B.  EXERCISE AND TERM OF OPTIONS. Each option shall be
exercisable at such time or times, during such period and for such number of
shares as shall be determined by the Plan Administrator and set forth in the
documents evidencing the option. However, no option shall have a term in excess
of ten (10) years measured from the option grant date.

               C.  EFFECT OF TERMINATION OF SERVICE.

                   1.    The following provisions shall govern the exercise of
any options held by the Optionee at the time of cessation of Service or death:

                         (i)    Any option outstanding at the time of the
         Optionee's cessation of Service for any reason shall remain exercisable
         for such period of time thereafter as shall be determined by the Plan
         Administrator and set forth in the documents evidencing the option, but
         no such option shall be exercisable after the expiration of the option
         term.

                         (ii)   Any option exercisable in whole or in part by
         the Optionee at the time of death may be subsequently exercised by the
         personal representative of the Optionee's estate or by the person or
         persons to whom the option is transferred pursuant to the Optionee's
         will or in accordance with the laws of descent and distribution.

                         (iii)  During the applicable post-Service exercise
         period, the option may not be exercised in the aggregate for more than
         the number of vested shares for which the option is exercisable on the
         date of the Optionee's cessation of Service. Upon the expiration of the
         applicable exercise period or (if earlier) upon the expiration of the
         option term, the option shall terminate and cease to be outstanding for
         any vested shares for which the option has not been exercised. However,
         the option shall, immediately upon the Optionee's cessation of Service,
         terminate and cease to be outstanding to the extent it is not
         exercisable for vested shares on the date of such cessation of Service.

                         (iv)   Should the Optionee's Service be terminated for
         Misconduct, then all outstanding options held by the Optionee shall
         terminate immediately and cease to be outstanding.

                         (v)    In the event of a Corporate Transaction, the
         provisions of Section III of this Article Two shall govern the period
         for which the outstanding options are to remain exercisable following
         the Optionee's cessation of Service and shall supersede any provisions
         to the contrary in this section.

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                   2.    The Plan Administrator shall have the discretion,
exercisable either at the time an option is granted or at any time while the
option remains outstanding, to:

                         (i)    extend the period of time for which the option
         is to remain exercisable following the Optionee's cessation of Service
         from the period otherwise in effect for that option to such greater
         period of time as the Plan Administrator shall deem appropriate, but in
         no event beyond the expiration of the option term, and/or

                         (ii)   permit the option to be exercised, during the
         applicable post-Service exercise period, not only with respect to the
         number of vested shares of Common Stock for which such option is
         exercisable at the time of the Optionee's cessation of Service but also
         with respect to one or more additional installments in which the
         Optionee would have vested under the option had the Optionee continued
         in Service.

               D.  STOCKHOLDER RIGHTS. The holder of an option shall have no
stockholder rights with respect to the shares subject to the option until such
person shall have exercised the option, paid the exercise price and become a
holder of record of the purchased shares.

               E.  REPURCHASE RIGHTS. The Plan Administrator shall have the
discretion to grant options which are exercisable for unvested shares of Common
Stock. Should the Optionee cease Service while holding such unvested shares, the
Corporation shall have the right to repurchase, at the exercise price paid per
share, any or all of those unvested shares. The terms upon which such repurchase
right shall be exercisable (including the period and procedure for exercise and
the appropriate vesting schedule for the purchased shares) shall be established
by the Plan Administrator and set forth in the document evidencing such
repurchase right.

               F.  LIMITED TRANSFERABILITY OF OPTIONS. During the lifetime of
the Optionee, the option shall be exercisable only by the Optionee unless the
option is assigned or transferred in accordance with this paragraph. Except as
otherwise determined by the Plan Administrator and incorporated in the documents
evidencing the option, an option shall not be assignable or transferable other
than by will or by the laws of descent and distribution following the Optionee's
death. Notwithstanding the foregoing, an option may be assigned in accordance
with the terms of a Qualified Domestic Relations Order. An assigned option may
only be exercised by the person or persons who acquire a proprietary interest in
the option in accordance with this paragraph. . The terms applicable to an
assigned option (or portion thereof) shall be the same as those in effect for
the option immediately prior to such assignment and shall be set forth in such
documents issued to the assignee as the Plan Administrator may deem appropriate.

         II.   CORPORATE TRANSACTION/CHANGE IN CONTROL

               A.  In the event of any Corporate Transaction, each outstanding
option shall automatically accelerate so that each such option shall,
immediately prior to the effective date of

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the Corporate Transaction, become fully exercisable for all of the shares of
Common Stock at the time subject to such option and may be exercised for any or
all of those shares as fully-vested shares of Common Stock. However, an
outstanding option shall NOT so accelerate if and to the extent: (i) such option
is, in connection with the Corporate Transaction, either to be assumed by the
successor corporation (or parent thereof) or to be replaced with a comparable
option to purchase shares of the capital stock of the successor corporation (or
parent thereof), (ii) such optionis to be replaced with a cash incentive program
of the successor corporation which preserves the spread existing on the unvested
option shares at the time of the Corporate Transaction and provides for
subsequent payout in accordance with the same vesting schedule applicable to
such option or (iii) the acceleration of such option is subject to other
limitations imposed by the Plan Administrator at the time of the option grant.
The determination of option comparability under clause (i) above shall be made
by the Plan Administrator, and its determination shall be final, binding and
conclusive.

               B.  All outstanding repurchase rights shall also terminate
automatically, and the shares of Common Stock subject to those terminated rights
shall immediately vest in full, in the event of any Corporate Transaction,
except to the extent: (i) those repurchase rights are to be assigned to the
successor corporation (or parent thereof) in connection with such Corporate
Transaction or (ii) such accelerated vesting is precluded by other limitations
imposed by the Plan Administrator at the time the repurchase right is issued.

               C.  Immediately following the consummation of the Corporate
Transaction, all outstanding options shall terminate and cease to be
outstanding, except to the extent assumed by the successor corporation (or
parent thereof).

               D.  Each option which is assumed in connection with a Corporate
Transaction shall be appropriately adjusted, immediately after such Corporate
Transaction, to apply to the number and class of securities which would have
been issuable to the Optionee in consummation of such Corporate Transaction had
the option been exercised immediately prior to such Corporate Transaction.
Appropriate adjustments shall also be made to (i) the number and class of
securities available for issuance under the Plan on both an aggregate and per
Optionee basis following the consummation of such Corporate Transaction and (ii)
the exercise price payable per share under each outstanding option, PROVIDED
the aggregate exercise price payable for such securities shall remain the same.

               E.  Any options which are assumed or replaced in the Corporate
Transaction and do not otherwise accelerate at that time, shall automatically
accelerate (and any of the Corporation's outstanding repurchase rights which do
not otherwise terminate at the time of the Corporate Transaction shall
automatically terminate and the shares of Common Stock subject to those
terminated rights shall immediately vest in full) in the event the Optionee's
Service should subsequently terminate by reason of an Involuntary Termination
within eighteen (18) months following the effective date of such Corporate
Transaction. Any options so accelerated shall remain exercisable for
fully-vested shares until the EARLIER of (i) the expiration of the option term

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or (ii) the expiration of the one (1)-year period measured from the effective
date of the Involuntary Termination.

               F.  The Plan Administrator shall have the discretion, exercisable
either at the time the option is granted or at any time while the option remains
outstanding, to (i) provide for the automatic acceleration of one or more
outstanding options (and the automatic termination of one or more outstanding
repurchase rights with the immediate vesting of the shares of Common Stock
subject to those rights) upon the occurrence of a Change in Control or (ii)
condition any such option acceleration (and the termination of any outstanding
repurchase rights) upon the subsequent Involuntary Termination of the Optionee's
Service within a specified period following the effective date of such Change in
Control. Any options accelerated in connection with a Change in Control shall
remain fully exercisable until the expiration or sooner termination of the
option term.

               G.  The grant of options under the Discretionary Option Grant
Program 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.

         III.  CANCELLATION AND REGRANT OF OPTIONS

               The Plan Administrator shall have the authority to effect, at any
time and from time to time, with the consent of the affected option holders, the
cancellation of any or all outstanding options under the Discretionary Option
Grant Program and to grant in substitution new options covering the same or
different number of shares of Common Stock but with an exercise price per share
based on the Fair Market Value per share of Common Stock on the new option grant
date.

         IV.   STOCK APPRECIATION RIGHTS

               A.  The Plan Administrator shall have full power and authority to
grant to selected Optionees tandem stock appreciation rights and/or limited
stock appreciation rights.

               B.  The following terms shall govern the grant and exercise of
tandem stock appreciation rights:

                         (i)    One or more Optionees may be granted the right,
         exercisable upon such terms as the Plan Administrator may establish,
         to elect between the exercise of the underlying option for shares of
         Common Stock and the surrender of that option in exchange for a
         distribution from the Corporation in an amount equal to the excess of
         (A) 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 surrendered portion thereof) over (B) the
         aggregate exercise price payable for such shares.

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                         (ii)   No such option surrender shall be effective
         unless it is approved by the Plan Administrator. If the surrender is so
         approved, then the distribution to which the Optionee shall be entitled
         may be made in shares of Common Stock valued at Fair Market Value on
         the option surrender date, in cash, or partly in shares and partly in
         cash, as the Plan Administrator shall in its sole discretion deem
         appropriate.

                         (iii)  If the surrender of an option is rejected by
         the Plan Administrator, then the Optionee shall retain whatever rights
         the Optionee had under the surrendered option (or surrendered portion
         thereof) on the option surrender date and may exercise such rights at
         any time prior to the LATER of (A) five (5) business days after the
         receipt of the rejection notice or (B) the last day on which the option
         is otherwise exercisable in accordance with the terms of the documents
         evidencing such option, but in no event may such rights be exercised
         more than ten (10) years after the option grant date.

               C.  The following terms shall govern the grant and exercise of
limited stock appreciation rights:

                         (i)    One or more Section 16 Insiders may be granted
         limited stock appreciation rights with respect to their outstanding
         options.

                         (ii)   Upon the occurrence of a Hostile Take-Over, each
         such individual holding one or more options with such a limited stock
         appreciation right in effect for at least six (6) months shall have the
         unconditional right (exercisable for a thirty (30)-day period following
         such Hostile Take-Over) to surrender each such option to the
         Corporation, to the extent the option is at the time exercisable for
         vested shares of Common Stock. In return for the surrendered option,
         the Optionee shall receive a cash distribution from the Corporation in
         an amount equal to the excess of (A) the Take-Over Price of the shares
         of Common Stock which are at the time vested under each surrendered
         option (or surrendered portion thereof) over (B) the aggregate exercise
         price payable for such shares. Such cash distribution shall be paid
         within five (5) days following the option surrender date.

                         (iii)  Neither the approval of the Plan Administrator
         nor the consent of the Board shall be required in connection with such
         option surrender and cash distribution.

                         (iv)   The balance of the option (if any) shall
         continue in full force and effect in accordance with the documents
         evidencing such option.

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                                  ARTICLE THREE
                             STOCK ISSUANCE PROGRAM

         I.    STOCK ISSUANCE TERMS

               Shares of Common Stock may be issued under the Stock Issuance
Program through direct and immediate issuances without any intervening option
grants. Each such stock issuance shall be evidenced by a Stock Issuance
Agreement which complies with the terms specified below.

               A.  PURCHASE PRICE.

                   1.    The purchase price per share shall be fixed by the Plan
Administrator, but shall not be less than eighty-five percent (85%) of the Fair
Market Value per share of Common Stock on the stock issuance date.

                   2.    Subject to the provisions of Section I of Article Five,
shares of Common Stock may be issued under the Stock Issuance Program for one or
both of the following items of consideration which the Plan Administrator may
deem appropriate in each individual instance:

                         (i)    cash or check made payable to the Corporation,
         or

                         (ii)   past services rendered to the Corporation (or
         any Parent or Subsidiary).

               B.  VESTING PROVISIONS.

                   1.    Shares of Common Stock issued under the Stock Issuance
Program may, in the discretion of the Plan Administrator, be fully and
immediately vested upon issuance or may vest in one or more installments over
the Participant's period of Service or upon attainment of specified performance
objectives. The elements of the vesting schedule applicable to any unvested
shares of Common Stock issued under the Stock Issuance Program, namely:

                         (i)    the Service period to be completed by the
         Participant or the performance objectives to be attained,

                         (ii)   the number of installments in which the shares
         are to vest,

                         (iii)  the interval or intervals (if any) which are to
         lapse between installments, and

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                         (iv)   the effect which death, Permanent Disability or
         other event designated by the Plan Administrator is to have upon the
         vesting schedule,

shall be determined by the Plan Administrator and incorporated into the Stock
Issuance Agreement.

                   2.    Any new, substituted or additional securities or other
property (including money paid other than as a regular cash dividend) which the
Participant may have the right to receive with respect to the Participant's
unvested shares of Common Stock by reason of any stock dividend, stock split,
recapitalization, combination of shares, exchange of shares or other change
affecting the outstanding Common Stock as a class without the Corporation's
receipt of consideration shall be issued subject to (i) the same vesting
requirements applicable to the Participant's unvested shares of Common Stock
and (ii) such escrow arrangements as the Plan Administrator shall deem
appropriate.

                   3.    The Participant shall have full stockholder rights
with respect to any shares of Common Stock issued to the Participant under the
Stock Issuance Program, whether or not the Participant's interest in those
shares is vested. Accordingly, the Participant shall have the right to vote
such shares and to receive any regular cash dividends paid on such shares.

                   4.    Should the Participant cease to remain in Service
while holding one or more unvested shares of Common Stock issued under the
Stock Issuance Program or should the performance objectives not be attained
with respect to one or more such unvested shares of Common Stock, then those
shares shall be immediately surrendered to the Corporation for cancellation,
and the Participant shall have no further stockholder rights with respect to
those shares. To the extent the surrendered shares were previously issued to
the Participant for consideration paid in cash or cash equivalent (including
the Participant's purchase-money indebtedness), the Corporation shall repay to
the Participant the cash consideration paid for the surrendered shares and
shall cancel the unpaid principal balance of any outstanding purchase-money
note of the Participant attributable to such surrendered shares.

                   5.    The Plan Administrator may in its discretion waive the
surrender and cancellation of one or more unvested shares of Common Stock (or
other assets attributable thereto) which would otherwise occur upon the
cessation of the Participant's Service or the non-completion of the vesting
schedule applicable to such shares. Such waiver shall result in the immediate
vesting of the Participant's interest in the shares of Common Stock as to which
the waiver applies. Such waiver may be effected at any time, whether before or
after the Participant's cessation of Service or the attainment or
non-attainment of the applicable performance objectives.

         II.   CORPORATE TRANSACTION/CHANGE IN CONTROL

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               A.  All of the outstanding repurchase rights under the Stock
Issuance Program shall terminate automatically, and all the shares of Common
Stock subject to those terminated rights shall immediately vest in full, in the
event of any Corporate Transaction, except to the extent (i) those repurchase
rights are assigned to the successor corporation (or parent thereof) in
connection with such Corporate Transaction or (ii) such accelerated vesting is
precluded by other limitations imposed in the Stock Issuance Agreement.

               B.  Any repurchase rights that are assigned in the Corporate
Transaction shall automatically terminate, and all the shares of Common Stock
subject to those terminated rights shall immediately vest in full, in the event
the Participant's Service should subsequently terminate by reason of an
Involuntary Termination within eighteen (18) months following the effective
date of such Corporate Transaction.

               C.  The Plan Administrator shall have the discretion,
exercisable either at the time the unvested shares are issued or at any time
while the Corporation's repurchase right remains outstanding, to (i) provide
for the automatic termination of one or more outstanding repurchase rights and
the immediate vesting of the shares of Common Stock subject to those rights
upon the occurrence of a Change in Control or (ii) condition any such
accelerated vesting upon the subsequent Involuntary Termination of the
Participant's Service within a specified period following the effective date of
such Change in Control.

         III.  SHARE ESCROW/LEGENDS

               Unvested shares may, in the Plan Administrator's discretion, be
held in escrow by the Corporation until the Participant's interest in such
shares vests or may be issued directly to the Participant with restrictive
legends on the certificates evidencing those unvested shares.

                                  ARTICLE FOUR
                                  MISCELLANEOUS

         I.    FINANCING

               A.  The Plan Administrator may permit any Optionee or
Participant to pay the option exercise price under the Discretionary Option
Grant Program or the purchase price for shares issued under the Stock Issuance
Program by delivering a promissory note payable in one or more installments.
The terms of any such promissory note (including the interest rate and the
terms of repayment) shall be established by the Plan Administrator in its sole
discretion. Promissory notes may be authorized with or without security or
collateral. In all events, the maximum credit available to the Optionee or
Participant may not exceed the sum of (i) the aggregate option exercise price
or purchase price payable for the purchased shares plus (ii) any Federal, state
and local income and employment tax liability incurred by the Optionee or the
Participant in connection with the option exercise or share purchase.

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               B.  The Plan Administrator may, in its discretion, determine
that one or more such promissory notes shall be subject to forgiveness by the
Corporation in whole or in part upon such terms as the Plan Administrator may
deem appropriate.

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         II.   TAX WITHHOLDING

               A.  The Corporation's obligation to deliver shares of Common
Stock upon the exercise of options or stock appreciation rights or upon the
issuance or vesting of such shares under the Plan shall be subject to the
satisfaction of all applicable Federal, state and local income and employment
tax withholding requirements.

               B.  The Plan Administrator may, in its discretion, provide any
or all holders of options or unvested shares of Common Stock under the Plan
with the right to use shares of Common Stock in satisfaction of all or part of
the Taxes incurred by such holders in connection with the exercise of their
options or the vesting of their shares. Such right may be provided to any such
holder in either or both of the following formats:

                         (i)    STOCK WITHHOLDING: The election to have the
         Corporation withhold, from the shares of Common Stock otherwise
         issuable upon the exercise of such option or the vesting of such
         shares, a portion of those shares with an aggregate Fair Market Value
         equal to the percentage of the Taxes (not to exceed one hundred percent
         (100%)) designated by the holder.

                          (ii)  STOCK DELIVERY: The election to deliver to the
         Corporation, at the time the option is exercised or the shares vest,
         one or more shares of Common Stock previously acquired by such holder
         (other than in connection with the option exercise or share vesting
         triggering the Taxes) with an aggregate Fair Market Value equal to the
         percentage of the Taxes (not to exceed one hundred percent (100%))
         designated by the holder.

         III.  EFFECTIVE DATE AND TERM OF THE PLAN

               A.  The Plan shall become effective on the Effective Date.

               B.  The Plan shall remain in effect until it is terminated. The
Board may terminate the Plan at any time and for any reason, PROVIDED, however,
that upon such Plan termination, all options, stock appreciation rights and
unvested stock issuances outstanding on such date shall thereafter continue to
have force and effect in accordance with the provisions of the documents
evidencing such options or issuances.

         IV.   AMENDMENT OF THE PLAN

               A.  The Board shall have complete and exclusive power and
authority to amend or modify the Plan in any or all respects. However, no such
amendment or modification shall adversely affect the rights and obligations with
respect to options, stock appreciation rights or unvested stock issuances at the
time outstanding under the Plan, unless the Optionee or the Participant consents
to such amendment or modification.

                                      14
<PAGE>

               B.  Options to purchase shares of Common Stock may be granted
under the Discretionary Option Grant Program and shares of Common Stock may be
issued under the Stock Issuance Program that are in each instance in excess of
the number of shares then available for issuance under the Plan, provided any
excess shares actually issued under those programs are held in escrow until
there is obtained approval by the Board of an amendment sufficiently increasing
the number of shares of Common Stock available for issuance under the Plan. If
such approval is not obtained within twelve (12) months after the date the
first such excess issuances are made, then (i) any unexercised options granted
on the basis of such excess shares shall terminate and cease to be outstanding
and (ii) the Corporation shall promptly refund to the Optionees and the
Participants the exercise or purchase price paid for any excess shares issued
under the Plan and held in escrow, together with interest (at the applicable
Short Term Federal Rate) for the period the shares were held in escrow, and
such shares shall thereupon be automatically canceled and cease to be
outstanding.

         V.    USE OF PROCEEDS

               Any cash proceeds received by the Corporation from the sale of
shares of Common Stock under the Plan shall be used for general corporate
purposes.

         VI.   REGULATORY APPROVALS

               A.  The implementation of the Plan, the granting of any option
or stock appreciation right under the Plan and the issuance of any shares of
Common Stock (i) upon the exercise of any option or stock appreciation right or
(ii) under the Stock Issuance Program shall be subject to the Corporation's
procurement of all approvals and permits required by regulatory authorities
having jurisdiction over the Plan, the options and stock appreciation rights
granted under it and the shares of Common Stock issued pursuant to it.

               B.  No shares of Common Stock or other assets shall be issued or
delivered under the 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 the Form S-8 registration statement for the shares
of Common Stock issuable under the Plan, and all applicable listing
requirements of any stock exchange (or the Nasdaq National Market, if
applicable) on which Common Stock is then listed for trading.

         VII.  NO EMPLOYMENT/SERVICE RIGHTS

               Nothing in the Plan shall confer upon the Optionee or the
Participant any right to continue in Service for any period of specific
duration or interfere with or otherwise restrict in any way the rights of the
Corporation (or any Parent or Subsidiary employing or retaining such person) or
of the Optionee or the Participant, which rights are hereby expressly reserved
by each, to terminate such person's Service at any time for any reason, with or
without cause.

                                      15
<PAGE>

                                    APPENDIX

               The following definitions shall be in effect under the Plan:

               A.  BOARD shall mean the Corporation's Board of Directors.

               B.  CHANGE IN CONTROL shall mean a change in ownership or
control of the Corporation effected through either of the following
transactions:

                         (i)    the acquisition, directly or indirectly, by 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), of beneficial ownership (within the meaning of
                   Rule 13d-3 of the 1934 Act) of securities possessing more
                   than fifty percent (50%) of the total combined voting power
                   of the Corporation's outstanding securities pursuant to a
                   tender or exchange offer made directly to the Corporation's
                   stockholders which the Board does not recommend such
                   stockholders to accept, or

                         (ii)   a change in the composition of the Board over a
                   period of thirty-six (36) consecutive months or less such
                   that a majority of the Board members ceases, by reason of one
                   or more contested elections for Board membership, to be
                   comprised of individuals who either (A) have been Board
                   members continuously since the beginning of such period or
                   (B) have been elected or nominated for election as Board
                   members during such period by at least a majority of the
                   Board members described in clause (A) who were still in
                   office at the time the Board approved such election or
                   nomination.

               C.  CODE shall mean the Internal Revenue Code of 1986, as
amended.

               D.  COMMON STOCK shall mean the Corporation's common stock.

               E.  CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions to which the Corporation is a party:

                         (i)    a merger or consolidation in which securities
                   possessing more than fifty percent (50%) of the total
                   combined voting power of the Corporation's outstanding
                   securities are transferred to a person or persons different
                   from the persons holding those immediately prior to such
                   transaction; or

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

                                      A-1
<PAGE>

               F.  CORPORATION shall mean Avant! Corporation, a Delaware
corporation.

               G.  DISCRETIONARY OPTION GRANT PROGRAM shall mean the
discretionary option grant program in effect under the Plan.

               H.  DOMESTIC RELATIONS ORDER shall mean any judgment,
decree or order (including approval of a property settlement agreement) which
provides or otherwise conveys, pursuant to applicable State domestic relations
laws (including community property laws), marital property rights to any spouse
or former spouse of the Optionee.

               I.  EFFECTIVE DATE shall mean the date on which the Plan is
adopted by the Board.

               J.  ELIGIBLE DIRECTOR shall mean a non-employee Board member
eligible to participate in the Option Grant Program in accordance with the
eligibility provisions of Article One.

               K.  EMPLOYEE shall mean an individual who is in the employ of
the Corporation (or any Parent or Subsidiary), subject to the control and
direction of the employer entity as to both the work to be performed and the
manner and method of performance.

               L.  EXERCISE DATE shall mean the date on which the Corporation
shall have received written notice of the option exercise.

               M.  FAIR MARKET VALUE per share of Common Stock on any relevant
date shall be determined in accordance with the following provisions:

                         (i)    If the Common Stock is at the time traded on
                   the Nasdaq National Market, then the Fair Market Value shall
                   be the closing price per share of Common Stock on the date in
                   question, as such price is reported by the National
                   Association of Securities Dealers on the Nasdaq National
                   Market or any successor system. If there is no closing price
                   for the Common Stock on the date in question, then the Fair
                   Market Value shall be the closing price on the last preceding
                   date for which such quotation exists.

                         (ii)   If the Common Stock is at the time listed on any
                   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 such price is officially quoted in the composite tape of
                   transactions on such exchange. 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 on the
                   last preceding date for which such quotation exists.

                                      A-2
<PAGE>

               N.  HOSTILE TAKE-OVER shall mean a change in ownership of the
Corporation effected through the following transaction:

                          (i)    the acquisition, directly or indirectly, by 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) of beneficial ownership (within the meaning of
                   Rule 13d-3 of the 1934 Act) of securities possessing more
                   than fifty percent (50%) of the total combined voting power
                   of the Corporation's outstanding securities pursuant to a
                   tender or exchange offer made directly to the Corporation's
                   stockholders which the Board does not recommend such
                   stockholders to accept, AND

                          (ii)     more than fifty percent (50%) of the
                   securities so acquired are accepted from persons other than
                   Section 16 Insiders.

               O.  INVOLUNTARY TERMINATION shall mean the termination of the
Service of any individual which occurs by reason of:

                                    (i)      such individual's involuntary
                   dismissal or discharge by the Corporation for reasons other
                   than Misconduct, or

                                     (ii)     such individual's voluntary
                   resignation following (A) a change in his or her position
                   with the Corporation which materially reduces his or her
                   level of responsibility, (B) a reduction in his or her level
                   of compensation (including base salary, fringe benefits and
                   any non-discretionary and objective-standard incentive
                   payment or bonus award) by more than fifteen percent (15%) or
                   (C) a relocation of such individual's place of employment by
                   more than fifty (50) miles, provided and only if such change,
                   reduction or relocation is effected by the Corporation
                   without the individual's consent.

               P.  MISCONDUCT shall mean the commission of any act of
fraud, embezzlement or dishonesty by the Optionee or Participant, any
unauthorized use or disclosure by such person of confidential information or
trade secrets of the Corporation (or any Parent or Subsidiary), or any other
intentional misconduct by such person adversely affecting the business or
affairs of the Corporation (or any Parent or Subsidiary) in a material manner.
The foregoing definition shall not be deemed to be inclusive of all the acts or
omissions which the Corporation (or any Parent or Subsidiary) may consider as
grounds for the dismissal or discharge of any Optionee, Participant or other
person in the Service of the Corporation (or any Parent or Subsidiary).

               Q.  1934 ACT shall mean the Securities Exchange Act of 1934, as
amended.

               R.  NON-STATUTORY OPTIONS shall mean options not intended to
satisfy the requirements of Code Section 422.

                                      A-3
<PAGE>

               S.  OPTIONEE shall mean any person to whom an option is granted
under the Discretionary Option Grant Program.

               T.  PARENT shall mean any corporation (other than the
Corporation) in an unbroken chain of corporations ending with the Corporation,
provided each corporation in the unbroken chain (other than the Corporation)
owns, at the time of the determination, stock possessing fifty percent (50%) or
more of the total combined voting power of all classes of stock in one of the
other corporations in such chain.

               U.  PARTICIPANT shall mean any person who is issued shares of
Common Stock under the Stock Issuance Program.

               V.  PERMANENT DISABILITY OR PERMANENTLY DISABLED shall mean the
inability of the Optionee or the Participant to engage in any substantial
gainful activity by reason of any medically determinable physical or mental
impairment expected to result in death or to be of continuous duration of
twelve (12) months or more.

               W.  PLAN shall mean the Corporation's 2000 Stock Option/Stock
Issuance Plan, as set forth in this document.

               X.  PLAN ADMINISTRATOR shall mean the particular entity, whether
the Primary Committee, the Board or the Secondary Committee, which is
authorized to administer the Discretionary Option Grant and Stock Issuance
Programs with respect to one or more classes of eligible persons, to the extent
such entity is carrying out its administrative functions under those programs
with respect to the persons under its jurisdiction.

               Y.  PRIMARY COMMITTEE shall mean a committee of two (2) or more
non-employee Board members appointed by the Board to administer the
Discretionary Option Grant and Stock Issuance Programs with respect to Section
16 Insiders.

               Z.  QUALIFIED DOMESTIC RELATIONS ORDER shall mean a Domestic
Relations Order which substantially complies with the requirements of Code
Section 414(p). The Plan Administrator shall have the sole discretion to
determine whether a Domestic Relations Order is a Qualified Domestic Relations
Order.

               AA. SECONDARY COMMITTEE shall mean a committee of one (1) or
more Board members appointed by the Board to administer the Discretionary
Option Grant and Stock Issuance Programs with respect to eligible persons other
than Section 16 Insiders.

               BB. SECTION 16 INSIDER shall mean an officer or director of the
Corporation subject to the short-swing profit liabilities of Section 16 of the
1934 Act.

               CC. SERVICE shall mean the provision of services to the
Corporation (or any Parent or Subsidiary) by a person in the capacity of an
Employee, a non-employee member of the board of directors or a consultant or
independent advisor, except to the extent otherwise specifically provided in
the documents evidencing the option grant or stock issuance.

                                      A-4
<PAGE>

               DD. STOCK EXCHANGE shall mean either the American Stock Exchange
or the New York Stock Exchange.

               EE. STOCK ISSUANCE AGREEMENT shall mean the agreement entered
into by the Corporation and the Participant at the time of issuance of shares
of Common Stock under the Stock Issuance Program.

               FF. STOCK ISSUANCE PROGRAM shall mean the stock issuance program
in effect under the Plan.

               GG. SUBSIDIARY shall mean any corporation (other than the
Corporation) in an unbroken chain of corporations beginning with the
Corporation, provided each corporation (other than the last corporation) in the
unbroken chain owns, at the time of the determination, stock possessing fifty
percent (50%) or more of the total combined voting power of all classes of
stock in one of the other corporations in such chain.

               HH. TAKE-OVER PRICE shall mean the greater of (i) the Fair
Market Value per share of Common Stock on the date the option is surrendered to
the Corporation in connection with a Hostile Take-Over or (ii) the highest
reported price per share of Common Stock paid by the tender offeror in
effecting such Hostile Take-Over.

               II. TAXES shall mean the Federal, state and local income and
employment tax liabilities incurred by the holder of Non-Statutory Options or
unvested shares of Common Stock in connection with the exercise of such
holder's options or the vesting of his or her shares.

                                      A-5<PAGE>

                                                                     Exhibit 4.3

                          CYBERTEL COMMUNICATIONS CORP.
                             2000 STOCK OPTION PLAN

         1.       PURPOSE. This Stock Option Plan (the "Plan") is intended to
serve as an incentive to, and to encourage stock ownership by, certain eligible
participants rendering services to Cybertel Communications CORP., a Nevada
corporation (the "Corporation"), and certain affiliates as set forth below, so
that they may acquire or increase their proprietary interest in the Corporation.

         2.       ADMINISTRATION.

                  2.1      COMMITTEE. The Plan shall be administered by the
Board of Directors of the Corporation (the "Board of Directors") or a
committee of two or more members appointed by the Board of Directors (the
"Committee") who are Non-Employee Directors as defined in Rule 16b-3
promulgated under Section 16 of the Securities Exchange Act of 1934 and an
outside director as defined in Treasury Regulation Section 1.162-27(e)(3).
The Committee shall select one of its members as Chairman and shall appoint a
Secretary, who need not be a member of the Committee. The Committee shall
hold meetings at such times and places as it may determine and minutes of
such meetings shall be recorded. Acts by a majority of the Committee in a
meeting at which a quorum is present and acts approved in writing by a
majority of the members of the Committee shall be valid acts of the Committee.

                  2.2      TERM. If the Board of Directors selects a Committee,
the members of the Committee shall serve on the Committee for the period of time
determined by the Board of Directors and shall be subject to removal by the
Board of Directors at any time. The Board of Directors may terminate the
function of the Committee at any time and resume all powers and authority
previously delegated to the Committee.

                  2.3      AUTHORITY. The Committee shall have sole discretion
and authority to grant options under the Plan to eligible participants rendering
services to the Corporation or any "parent" or "subsidiary" of the Corporation
("Parent or Subsidiary"), as defined in Section 424 of the Internal Revenue Code
of 1986, as amended (the "Code"), at such times, under such terms and in such
amounts as it may decide. For purposes of this Plan and any Stock Option
Agreement (as defined below), the term "Corporation" shall include any Parent or
Subsidiary, if applicable. Subject to the express provisions of the Plan, the
Committee shall have complete authority to interpret the Plan, to prescribe,
amend and rescind the rules and regulations relating to the Plan, to determine
the details and provisions of any Stock Option Agreement, to accelerate any
options granted under the Plan and to make all other determinations necessary or
advisable for the administration of the Plan.

                  2.4      TYPE OF OPTION. The Committee shall have full
authority and discretion to determine, and shall specify, whether the eligible
individual will be granted options intended to qualify as incentive options
under Section 422 of the Code ("Incentive Options") or options which are not
intended to qualify under Section 422 of the Code ("Non-Qualified Options");
provided, however, that Incentive Options shall only be granted to employees of
the Corporation, or a Parent

                                       20
<PAGE>

or Subsidiary thereof, and shall be subject to the special limitations set forth
herein attributable to Incentive Options.

                  2.5      INTERPRETATION. The interpretation and construction
by the Committee of any provisions of the Plan or of any option granted under
the Plan shall be final and binding on all parties having an interest in this
Plan or any option granted hereunder. No member of the Committee shall be liable
for any action or determination made in good faith with respect to the Plan or
any option granted under the Plan.

         3.       ELIGIBILITY.

                  3.1      GENERAL. All directors, officers, employees of and
certain persons rendering services to the Corporation, or any Parent or
Subsidiary, relative to the Corporation's, or any Parent's or Subsidiaries',
management, operation or development shall be eligible to receive options under
the Plan. The selection of recipients of options shall be within the sole and
absolute discretion of the Committee. No person shall be granted an option under
this Plan unless such person has executed the grant representation letter set
forth on Exhibit "A," as such Exhibit may be amended by the Committee from time
to time and no person shall be granted an Incentive Option under this Plan
unless such person is an employee of the Corporation, or a Parent or Subsidiary,
on the date of grant. No person shall be granted more than 500,000 options in
any one-year period.

                  3.2      TERMINATION OF ELIGIBILITY.

                           3.2.1 If an optionee ceases to be employed by the
Corporation, or its Parent or Subsidiary, is no longer an officer or member of
the Board of Directors of the Corporation or no longer performs services for the
Corporation, or its Parent or Subsidiary for any reason (other than for "cause,"
as hereinafter defined, or such optionee's death), any option granted hereunder
to such optionee shall expire three months after the date of the occurrence
giving rise to such termination of eligibility (or 1 year in the event an
optionee is "disabled," as defined in Section 22(e)(3) of the Code) or 6 months
if the Committee so designates in the option agreement with respect to
Non-Qualified options or upon the date it expires by its terms, whichever is
earlier. Any option that has not vested in the optionee as of the date of such
termination shall immediately expire and shall be null and void. The Committee
shall, in its sole and absolute discretion, decide, utilizing the provisions set
forth in Treasury Regulations Section 1.421-7(h), whether an authorized leave of
absence or absence for military or governmental service, or absence for any
other reason, shall constitute termination of eligibility for purposes of this
Section.

                           3.2.2 If an optionee ceases to be employed by the
Corporation, or its Parent or Subsidiary, is no longer an officer or member of
the Board of Directors of the Corporation, or no longer performs services for
the Corporation, or its Parent or Subsidiary and such termination is as a result
of "cause," as hereinafter defined, then all options granted hereunder to such
optionee shall expire on the date of the occurrence giving rise to such
termination of eligibility or upon the date it expires by its terms, whichever
is earlier, and such optionee shall have no rights with respect

                                       2
<PAGE>

to any unexercised options. For purposes of this Plan, "cause" shall mean an
optionee's personal dishonesty, misconduct, breach of fiduciary duty,
incompetence, intentional failure to perform stated obligations, willful
violation of any law, rule, regulation or final cease and desist order, or any
material breach of any provision of this Plan, any Stock Option Agreement or any
employment agreement.

                  3.3      DEATH OF OPTIONEE AND TRANSFER OF OPTION. In the
event an optionee shall die, an option may be exercised (subject to the
condition that no option shall be exercisable after its expiration and only to
the extent that the optionee's right to exercise such option had accrued at the
time of the optionee's death) at any time within six months after the optionee's
death by the executors or administrators of the optionee or by any person or
persons who shall have acquired the option directly from the optionee by bequest
or inheritance. Any option that has not vested in the optionee as of the date of
death or termination of employment, whichever is earlier, shall immediately
expire and shall be null and void. No option shall be transferable by the
optionee other than by will or the laws of intestate succession.

                  3.4      LIMITATION ON INCENTIVE OPTIONS. No person shall be
granted any Incentive Option to the extent that the aggregate fair market value
of the Stock (as defined below) to which such options are exercisable for the
first time by the optionee during any calendar year (under all plans of the
Corporation as determined under Section 422(d) of the Code) exceeds $100,000.

         4.       IDENTIFICATION OF STOCK. The Stock, as defined herein, subject
to the options shall be shares of the Corporation's authorized but unissued or
acquired or reacquired common stock (the "Stock"). The aggregate number of
shares subject to outstanding options shall not exceed 2,500,000 shares of Stock
(subject to adjustment as provided in Section 6). If any option granted
hereunder shall expire or terminate for any reason without having been exercised
in full, the unpurchased shares subject thereto shall again be available for
purposes of this Plan.

         5.       TERMS AND CONDITIONS OF OPTIONS. Any option granted pursuant
to the Plan shall be evidenced by an agreement ("Stock Option Agreement") in
such form as the Committee shall from time to time determine, which agreement
shall comply with and be subject to the following terms and conditions:

                  5.1      NUMBER OF SHARES. Each option shall state the number
of shares of Stock to which it pertains.

                  5.2      OPTION EXERCISE PRICE. Each option shall state the
option exercise price, which shall be determined by the Committee; provided,
however, that (i) the exercise price of any Incentive Option shall not be less
than the fair market value of the Stock, as determined by the Committee, on the
date of grant of such option, (ii) the exercise price of any Incentive Option
granted to any person who owns more than 10% of the total combined voting power
of all classes of the Corporation's stock, as determined for purposes of Section
422 of the Code, shall not be less than 110% of the fair market value of the
Stock, as determined by the Committee, on the date of grant of such option, and
(iii) the exercise price of any Non-Qualified Option shall not be less than 85 %
of the fair market value of the Stock, as determined by the Committee, on the
date of

                                       3
<PAGE>

grant of such option. In the event that the fair market value of the price of
the common stock declines below the price at which the option is granted, the
Committee shall have the discretion and authority to cancel, reduce, or
otherwise modify the price of any unexercised option, including, but not limited
to, a regrant of the option at a new price more commensurate with the fair
market value of the stock. The Committee must receive the approval of the Board
of Directors before any action is taken in accordance with this provision.

                  5.3      TERM OF OPTION. The term of an option granted
hereunder shall be determined by the Committee at the time of grant, but shall
not exceed five years from the date of the grant. All options shall be subject
to early termination as set forth in this Plan. In no event shall any option be
exercisable after the expiration of its term.

                  5.4      METHOD OF EXERCISE. An option shall be exercised by
written notice to the Corporation by the optionee (or successor in the event of
death) and execution by the optionee of an exercise representation letter in the
form set forth on Exhibit "B," as such Exhibit may be amended by the Committee
from time to time. Such written notice shall state the number of shares with
respect to which the option is being exercised and designate a time, during
normal business hours of the Corporation, for the delivery thereof ("Exercise
Date"), which time shall be at least 30 days after the giving of such notice
unless an earlier date shall have been mutually agreed upon. At the time
specified in the written notice, the Corporation shall deliver to the optionee
at the principal office of the Corporation, or such other appropriate place as
may be determined by the Committee, a certificate or certificates for such
shares. Notwithstanding the foregoing, the Corporation may postpone delivery of
any certificate or certificates after notice of exercise for such reasonable
period as may be required to comply with any applicable listing requirements of
any securities exchange. In the event an option shall be exercisable by any
person other than the optionee, the required notice under this Section shall be
accompanied by appropriate proof of the right of such person to exercise the
option.

                  5.5      MEDIUM AND TIME OF PAYMENT. The option exercise price
shall be payable in full on or before the option Exercise Date in any one of the
following alternative forms:

                           5.5.1 Full payment in cash or certified bank or
cashier's check;

                           5.5.2 Full payment in shares of Stock having a fair
market value on the Exercise Date in the amount equal to the option exercise
price;

                           5.5.3 Through a special sale and remittance procedure
pursuant to which the optionee shall concurrently provide irrevocable written
instruction to (a) a Corporation-designated brokerage firm to effect the
immediate sale of the purchased shares and remit to the Corporation, out of the
sale proceeds available on the settlement date, sufficient funds to cover the
aggregate exercise price payable for the purchased shares plus all applicable
Federal, state and

                                       4
<PAGE>

local income and employment taxes required to be withheld by the Corporation by
reason of such exercise and (b) the Corporation to deliver the certificates for
the purchased shares directly to such brokerage firm in order to complete the
sale.

                           5.5.4 A combination of the consideration set forth in
Sections 5.5.1, 5.5.2 and 5.5.3 equal to the option exercise price; or

                           5.5.5 Any other method of payment complying with the
provisions of Section 422 of the Code with respect to Incentive Options provided
that the terms of payment are established by the Committee at the time of grant
and any other method of payment established by the Committee with respect to
Non-Qualified Options.

                  5.6      FAIR MARKET VALUE. The fair market value of a share
of Stock on any relevant date shall be determined in accordance with the
following provisions:

                           5.6.1 If the Stock at the time is neither listed nor
admitted to trading on any stock exchange nor traded in the over-the-counter
market, then the fair market value shall be determined by the Committee after
taking into account such factors as the Committee shall deem appropriate.

                           5.6.2 If the Stock is not at the time listed or
admitted to trading on any stock exchange but is traded in the over-the-counter
market, the fair market value shall be the mean between the highest bid and
lowest asked prices (or, if such information is available, the closing selling
price) of one share of Stock on the date in question in the over-the-counter
market, as such prices are reported by the National Association of Securities
Dealers through its NASDAQ system or any successor system. If there are no
reported bid and asked prices (or closing selling price) for the Stock on the
date in question, then the mean between the highest bid price and lowest asked
price (or the closing selling price) on the last preceding date for which such
quotations exist shall be determinative of fair market value.

                           5.6.3 If the Stock is at the time listed or admitted
to trading on any stock exchange, then the fair market value shall be the
closing selling price of one share of Stock on the date in question on the stock
exchange determined by the Committee to be the primary market for the Stock, as
such price is officially quoted in the composite tape of transactions on such
exchange. If there is no reported sale of Stock on such exchange on the date in
question, then the fair market value shall be the closing selling price on the
exchange on the last preceding date for which such quotation exists.

                  5.7      RIGHTS AS A SHAREHOLDER. An optionee or successor
shall have no rights as a shareholder with respect to any Stock underlying any
option until the date of the issuance to such optionee of a certificate for such
Stock. No adjustment shall be made for dividends (ordinary or extraordinary,
whether in cash, securities or other property) or distributions or other rights
for which the record date is prior to the date such Stock certificate is issued,
except as provided in Section 6.

                                       5
<PAGE>

                  5.8      MODIFICATION, EXTENSION AND RENEWAL OF OPTIONS.
Subject to the terms and conditions of the Plan, the Committee may modify,
extend or renew outstanding options granted under the Plan, or accept the
surrender of outstanding options (to the extent not exercised) and authorize the
granting of new options in substitution therefor.

                  5.9      VESTING AND RESTRICTIONS. The Committee shall have
complete authority and discretion to set the terms, conditions, restrictions,
vesting schedules and other provisions of any option in the applicable Stock
Option Agreement and shall have complete authority to require conditions and
restrictions on any Stock issued pursuant to this Plan.

                  5.10     RELOAD STOCK OPTION. The Committee shall have the
sole discretion and authority to grant a "reload option" to qualified
participants. The category of "qualified participants" is exclusively limited to
employees or directors of the Corporation or its subsidiaries. Despite any
possible contradictory provisions elsewhere within this plan, reload options are
non-transferable.

                  5.11     OTHER PROVISIONS. The Stock Option Agreements shall
contain such other provisions, including without limitation, restrictions or
conditions upon the exercise of options, as the Committee shall deem advisable.

         6.       ADJUSTMENTS UPON CHANGES IN CAPITALIZATION.

                  6.1      SUBDIVISION OR CONSOLIDATION. Subject to any required
action by shareholders of the Corporation, the number of shares of Stock covered
by each outstanding option, and the exercise price thereof, shall be
proportionately adjusted for any increase or decrease in the number of issued
shares of Stock of the Corporation resulting from a subdivision or consolidation
of shares, including, but not limited to, a stock split, reverse stock split,
recapitalization, continuation or reclassification, or the payment of a stock
dividend (but only on the Stock) or any other increase or decrease in the number
of such shares effected without receipt of consideration by the Corporation. Any
fraction of a share subject to option that would otherwise result from an
adjustment pursuant to this Section shall be rounded downward to the next full
number of shares without other compensation or consideration to the holder of
such option.

                  6.2      CAPITAL TRANSACTIONS. Upon a sale or exchange of all
or substantially all of the assets of the Corporation, a merger or consolidation
in which the Corporation is not the surviving corporation, a merger,
reorganization or consolidation in which the Corporation is the surviving
corporation and shareholders of the Corporation exchange their stock for
securities or property, a liquidation of the Corporation or similar transaction
as determined by the Committee ("Capital Transaction"), this Plan and each
option issued under this Plan, whether vested or unvested, shall terminate,
unless such options are assumed by a successor corporation in a merger or
consolidation, immediately prior to such Capital Transaction; provided, however,
that unless the outstanding options are assumed by a successor corporation in a
merger or consolidation, subject to terms approved by the Committee, all
optionees will have the right, during the 15 days prior to such

                                       6
<PAGE>

Capital Transaction, to exercise all vested options. Notwithstanding the
foregoing, in the event there is a merger or consolidation where the Corporation
is not the surviving corporation, all options granted under this Plan shall vest
30 days prior to such merger or consolidation unless such options are assumed by
the successor corporation in such merger or consolidation. The Corporation
shall, subject to any nondisclosure provisions, attempt to provide optionees at
least 15 days notice of the option termination date. The Committee may (but
shall not be obligated to) (i) accelerate the vesting of any option or (ii)
apply the foregoing provisions, including but not limited to termination of this
Plan and any options granted pursuant to the Plan, in the event there is a sale
of 50% or more of the stock of the Corporation in any 2-year period or a
transaction similar to a Capital Transaction.

                  6.3      ADJUSTMENTS. To the extent that the foregoing
adjustments relate to stock or securities of the Corporation, such adjustments
shall be made by the Committee, whose determination in that respect shall be
final, binding and conclusive.

                  6.4      ABILITY TO ADJUST. The grant of an option pursuant to
the Plan shall not affect in any way the right or power of the Corporation to
make adjustments, reclassifications, reorganizations or changes of its capital
or business structure or to merge, consolidate, dissolve, liquidate, sell or
transfer all or any part of its business or assets.

                  6.5      NOTICE OF ADJUSTMENT. Whenever the Corporation shall
take any action resulting in any adjustment provided for in this Section, the
Corporation shall forthwith deliver notice of such action to each optionee,
which notice shall set forth the number of shares subject to the option and the
exercise price thereof resulting from such adjustment.

                  6.6      LIMITATION ON ADJUSTMENTS. Any adjustment, assumption
or substitution of an Incentive Option shall comply with Section 425 of the
Code, if applicable.

         7.       NONASSIGNABILITY. Options granted under this Plan may not be
sold, pledged, assigned or transferred in any manner other than by will or by
the laws of intestate succession, and may be exercised during the lifetime of an
optionee only by such optionee. Any transfer by the optionee of any option
granted under this Plan in violation of this Section shall void such option and
any Stock Option Agreement entered into by the optionee and the Corporation
regarding such transferred option shall be void and have no further force or
effect. No option shall be pledged or hypothecated in any way, nor shall any
option be subject to execution, attachment or similar process.

         8.       NO RIGHT OF EMPLOYMENT. Neither the grant nor exercise of any
option nor anything in this Plan shall impose upon the Corporation or any other
corporation any obligation to employ or continue to employ any optionee. The
right of the Corporation and any other corporation to terminate any employee
shall not be diminished or affected because an option has been granted to such
employee.

         9.       TERM OF PLAN. This Plan is effective on the date the Plan is
adopted by the Board of Directors and options may be granted pursuant to the
Plan from time to time within a period of

                                       7
<PAGE>

ten (10) years from such date, or the date of any required shareholder approval
required under the Plan, if earlier. Termination of the Plan shall not affect
any option theretofore granted.

         10.      AMENDMENT OF THE PLAN. The Board of Directors of the
Corporation may, subject to any required shareholder approval, suspend,
discontinue or terminate the Plan, or revise or amend it in any respect
whatsoever with respect to any shares of Stock at that time not subject to
options.

         11.      APPLICATION OF FUNDS. The proceeds received by the Corporation
from the sale of Stock pursuant to options may be used for general corporate
purposes.

         12.      RESERVATION OF SHARES. The Corporation, during the term of
this Plan, shall at all times reserve and keep available such number of shares
of Stock as shall be sufficient to satisfy the requirements of the Plan.

         13.      NO OBLIGATION TO EXERCISE OPTION. The granting of an option
shall not impose any obligation upon the optionee to exercise such option.

         14.      APPROVAL OF BOARD OF DIRECTORS AND SHAREHOLDERS. The Plan
shall not take effect until approved by the Board of Directors of the
Corporation. This Plan shall be approved by a vote of the shareholders within 12
months from the date of approval by the Board of Directors. In the event such
shareholder vote is not obtained, all options granted hereunder, whether vested
or unvested, shall be null and void. Further, any stock acquired pursuant to the
exercise of any options under this Agreement may not count for purposes of
determining whether shareholder approval has been obtained.

         15.      WITHHOLDING TAXES. Notwithstanding anything else to the
contrary in this Plan or any Stock Option Agreement, the exercise of any option
shall be conditioned upon payment by such optionee in cash, or other provisions
satisfactory to the Committee, of all local, state, federal or other withholding
taxes applicable, in the Committee's judgment, to the exercise or to later
disposition of shares acquired upon exercise of an option.

         16.      PARACHUTE PAYMENTS. Any outstanding option under the Plan may
not be accelerated to the extent any such acceleration of such option would,
when added to the present value of other payments in the nature of compensation
which becomes due and payable to the optionee would result in the payment to
such optionee of an excess parachute payment under Section 280G of the Code. The
existence of any such excess parachute payment shall be determined in the sole
and absolute discretion of the Committee.

         17.      SECURITIES LAWS COMPLIANCE. Notwithstanding anything contained
herein, the Corporation shall not be obligated to grant any option under this
Plan or to sell, issue or effect any transfer of any Stock unless such grant,
sale, issuance or transfer is at such time effectively (i) registered or exempt
from registration under the Securities Act of 1933, as amended (the "Act") and

                                       8
<PAGE>

(ii) qualified or exempt from qualification under the California Corporate
Securities Law of 1968 and any other applicable state securities laws. As a
condition to exercise of any option, each optionee shall make such
representations as may be deemed appropriate by counsel to the Corporation for
the Corporation to use any available exemption from registration under the Act
or qualification under any applicable state securities law.

         18.      RESTRICTIVE LEGENDS. The certificates representing the Stock
issued upon exercise of options granted pursuant to this Plan will bear any
legends required by applicable securities laws as determined by the Committee.

         19.      NOTICES. Any notice to be given under the terms of the Plan
shall be addressed to the Corporation in care of its Secretary at its principal
office, and any notice to be given to an optionee shall be addressed to such
optionee at the address maintained by the Corporation for such person or at such
other address as the optionee may specify in writing to the Corporation.

         As adopted by the Board of Directors as of April 1, 2000.

                                           CYBERTEL COMMUNICATIONS CORP., a
                                           Nevada corporation

                                           By:
                                              ----------------------------------
                                           Its:
                                               ---------------------------------

                                       9
<PAGE>

                                    EXHIBIT A

                               ____________, 2000

Cybertel Communications CORP.
4275 Executive Square, Suite 510
La Jolla, CA 92037

Re:  2000 STOCK OPTION PLAN

To Whom It May Concern:

         This letter is delivered to Cybertel Communications CORP., a Nevada
corporation (the "Corporation"), in connection with the grant to
_______________________ (the "Optionee") of an option (the "Option") to purchase
_________ shares of common stock of the Corporation (the "Stock") pursuant to
the Cybertel Communications CORP. 2000 Stock Option Plan dated ____________,
2000 (the "Plan"). The Optionee understands that the Corporation's receipt of
this letter executed by the Optionee is a condition to the Corporation's
willingness to grant the Option to the Optionee.

         The Optionee acknowledges that the grant of the Option by the
Corporation is in lieu of any and all other promises of the Corporation to the
Optionee, whether written or oral, express or implied, regarding the grant of
options or other rights to acquire Stock. Accordingly, in anticipation of the
grant of the Option, the Optionee hereby relinquishes all rights to such other
rights, if any, to acquire stock of the Corporation.

         In addition, the Optionee makes the following representations and
warranties with the understanding that the Corporation will rely upon them in
the Corporation's determination of whether the grant of the Option meets the
requirements of the "private offering" exemption provided in Section 25102(f) of
the California Corporations Code and certain exemptions provided under the
Securities Act of 1933, as amended.

         20. The Optionee acknowledges receipt of a copy of the Plan and
Agreement. The Optionee has carefully reviewed the Plan and Agreement.

         21. The Option and the Stock will be acquired by the Optionee for
investment only, for the Optionee's own account, and not with a view to or for
sale in connection with any distribution of the Option or the Stock. The
Optionee will not take, or cause to be taken, any action which would

                               Exhibit A - Page 1
<PAGE>

cause the Optionee, or any entity or person affiliated with the Optionee, to be
deemed an underwriter with respect to the Option or the Stock.

         22. The Optionee either:

                  a. has a preexisting personal or business relationship with
the Corporation or any of its officers, directors or controlling persons of a
nature and duration as would allow the Optionee to be aware of the character,
business acumen, general business and financial circumstances of the Corporation
or of the person with whom such relationship exists; or

                  b. by reason of the Optionee's business or financial
experience, or the business or financial experience of the Optionee's
professional advisor who is unaffiliated with and is not compensated by the
Corporation or any affiliate or selling agent of the Corporation, directly or
indirectly, the Optionee has the capacity to protect the Optionee's interests in
connection with the grant of the Option and the purchase of the Stock.

         23. The Optionee acknowledges that an investment in the Corporation
represents a speculative investment and a high degree of risk. The Optionee
acknowledges that the Optionee has had the opportunity to obtain and review all
information from the Corporation necessary to make a reasonably informed
investment decision and that the Optionee has had all questions asked of the
Corporation answered to the reasonable satisfaction of the Optionee. The
Optionee is able to bear the economic risk of an investment in the Option and
the Stock.

         24. The grant of the Option has not been accompanied by the publication
of any advertisement.

         25. The Optionee understands and acknowledges that the Stock has not
been, and will not be, registered under the Securities Act of 1933, as amended,
or qualified under the California Corporate Securities Law of 1968. The Optionee
understands and acknowledges that the Stock may not be sold without compliance
with the registration requirements of federal and applicable state securities
laws unless an exemption from such laws is available. The Optionee understands
that the certificate representing the Stock shall bear the legends set forth in
the Plan.

         26. The Optionee understands and acknowledges that the Option and the
Stock are subject to the terms and conditions of the Plan.

         27. The Optionee understands and agrees that, at the time of exercise
of any part of the Option for Stock, the Optionee may be required to provide the
Corporation with additional representations, warranties and/or covenants similar
to those contained in this letter.

         28. The Optionee is a resident of the State of __________.

                               Exhibit A - Page 2
<PAGE>

         29. The Optionee will notify the Corporation immediately of any change
in the above information which occurs before the Option is exercised in full by
the Optionee.

         The foregoing representations and warranties are given on
______________, 2000 at ____________________.

                                    OPTIONEE:

                                    -----------------------------------

                                    -----------------------------------

                               Exhibit A - Page 3
<PAGE>

                                    EXHIBIT B

                               ____________, 2000

Cybertel Communications CORP.
4275 Executive Square, Suite 510
La Jolla, CA 92037

         Re:  2000 STOCK OPTION PLAN

To Whom It May Concern:

         I (the "Optionee") hereby exercise my right to purchase shares of
common stock (the "Stock") of Cybertel Communications CORP., a Nevada
corporation (the "Corporation"), pursuant to the Cybertel Communications CORP.
2000 Stock Option Plan dated _______________, 2000 (the "Plan") and the Stock
Option Agreement (the "Agreement") dated _______________, 2000. As provided in
such Plan, I deliver herewith payment as set forth in the Plan in the amount of
the aggregate option exercise price. Please deliver to me at my address as set
forth above stock certificates representing the subject shares registered in my
name (and (SPOUSE), as (STYLE OF VESTING)).

         The Optionee hereby represents as follows:

         1. The Optionee acknowledges receipt of a copy of the Plan and
Agreement. The Optionee has carefully reviewed the Plan and Agreement.

         2. The Optionee either:

                  a. has a preexisting personal or business relationship with
the Corporation or any of its officers, directors or controlling persons of a
nature and duration as would allow the undersigned to be aware of the character,
business acumen, general business and financial circumstances of the Corporation
or of the person with whom such relationship exists; or

                  b. by reason of the Optionee's business or financial
experience or the business or financial experience of the Optionee's
professional advisor(s) who is (are) unaffiliated with and is (are) not
compensated by the Corporation or any affiliate or selling agent of the
Corporation, directly or indirectly, has the capacity to protect the Optionee's
interests in connection with the purchase of nonqualified stock options of the
Corporation and Stock issuable upon the exercise thereof.

                               Exhibit B - Page 1
<PAGE>

         3. The Optionee is able to bear the economic risk of his investment in
the stock options of the Corporation and the Stock issuable upon exercise
thereof.

         4. The Optionee acknowledges that an investment in the Corporation
represents a speculative investment and a high degree of risk. The Optionee
acknowledges that the Optionee has had the opportunity to obtain and review all
information from the Corporation necessary to make a reasonably informed
investment decision and that the Optionee has had all questions asked of the
Corporation answered to the reasonable satisfaction of the Optionee.

         5. The grant of Options for Stock and the exercise of the Options has
not been accompanied by the publication of any advertisement.

         6. The Optionee understands and acknowledges that the Stock has not,
and will not, be registered under the Securities Act of 1933, as amended, or
qualified under the California Securities Law of 1968. The Optionee understands
and acknowledges that the Stock may not be sold without compliance with the
registration and qualification requirements of federal and applicable state
securities laws unless exemptions from such laws are available. The Optionee
understands that the certificate representing the Stock shall bear the legends
set forth in the Plan.

         7. The Optionee is a resident of the State of __________.

         8. The Optionee hereby is purchasing for the Optionee's own account and
not with a view to or for sale in connection with any distribution of the stock
options of the Corporation or any Stock issuable upon exercise thereof.

         The foregoing representations and warranties are given on
___________________ at ______________________.

                                       OPTIONEE:

                                       _______________________________________
                                       _____________, President

                               Exhibit B - Page 2

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