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                                                                    EXHIBIT 99.7

                                                             Grant No._________


                            CELLSTREAM NETWORKS INC.
                         NOTICE OF GRANT OF STOCK OPTION

               Notice is hereby given of the following option grant (the
"Option") to purchase shares of the Common Stock of CellStream Networks Inc.
(the "Corporation"):

               Optionee:
                        -------------------------------------------------------
               Grant Date:
                          ------------------------------------------------------
               Vesting Commencement Date:
                                         ---------------------------------------
               Exercise Price:  $                                    per share
                                  ---------------------------------
               Number of Option Shares:                            shares
                                       ---------------------------
               Expiration Date:
                               -------------------------------------------------
               Type of Option:    [ ]  Incentive Stock Option
                                  [ ]  Non-Statutory Stock Option
               Date Exercisable:  Immediately Exercisable

               Vesting Schedule: The Option Shares shall be unvested and subject
               to repurchase by the Corporation at the Exercise Price paid per
               share. Optionee shall acquire a vested interest in, and the
               Corporation's repurchase right will accordingly lapse with
               respect to, (i) twenty percent (20%) of the Option Shares upon
               Optionee's completion of one (1) year of Service measured from
               the Vesting Commencement Date and (ii) the balance of the Option
               Shares in successive equal monthly installments upon Optionee's
               completion of each of the next forty-eight (48) months of Service
               measured from and after the first anniversary of the Vesting
               Commencement Date. In no event shall any additional Option Shares
               vest after Optionee's cessation of Service.

               Optionee understands and agrees that the Option is granted
subject to and in accordance with the terms of the CellStream Networks Inc. 1995
Stock Option Plan (the "Plan"). Optionee further agrees to be bound by the terms
of the Plan and the terms of the Option as set forth in the Stock Option
Agreement attached hereto as Exhibit A. Optionee understands that any Option
Shares purchased under the Option will be subject to the terms set forth in the
Stock Purchase Agreement attached hereto as Exhibit B.


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               Optionee hereby acknowledges receipt of a copy of the Plan in the
form attached hereto as Exhibit C.

               REPURCHASE RIGHTS. OPTIONEE HEREBY AGREES THAT ALL OPTION SHARES
ACQUIRED UPON THE EXERCISE OF THE OPTION SHALL BE SUBJECT TO CERTAIN REPURCHASE
RIGHTS AND RIGHTS OF FIRST REFUSAL EXERCISABLE BY THE CORPORATION AND ITS
ASSIGNS. THE TERMS OF SUCH RIGHTS ARE SPECIFIED IN THE ATTACHED STOCK PURCHASE
AGREEMENT.

               No Employment or Service Contract. Nothing in this Notice or in
the attached Stock Option Agreement or Plan shall confer upon Optionee 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 Optionee) or of Optionee, which rights are
hereby expressly reserved by each, to terminate Optionee's Service at any time
for any reason, with or without cause.

               Definitions. All capitalized terms in this Notice shall have the
meaning assigned to them in this Notice or in the attached Stock Option
Agreement.

                , 199
---------------
      Date


                                                   CELLSTREAM NETWORKS INC.



                                                   By:
                                                      --------------------------

                                                   Title:
                                                         -----------------------


                                                   -----------------------------
                                                   OPTIONEE

                                                   Address:
                                                            --------------------

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


ATTACHMENTS
Exhibit A - Stock Option Agreement
Exhibit B - Stock Purchase Agreement
Exhibit C - 1995 Stock Option Plan

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