1
                                                                    EXHIBIT 1.1

                                2,500,000 Shares

                                    8X8, INC.

                                  Common Stock

                             UNDERWRITING AGREEMENT

December __, 1996



MONTGOMERY SECURITIES
DONALDSON, LUFKIN & JENRETTE
SECURITIES CORPORATION
  As Representatives of the several Underwriters
c/o MONTGOMERY SECURITIES
600 Montgomery Street
San Francisco, California  94111


Dear Sirs:

     SECTION 1. Introductory. 8x8, Inc., a Delaware corporation (the "Company"),
proposes to issue and sell 2,500,000 shares of its authorized but unissued
Common Stock (the "Common Stock") to the several underwriters named in Schedule
A annexed hereto (the "Underwriters"), for whom you are acting as
Representatives. Said aggregate of 2,500,000 shares are herein called the "Firm
Common Shares." In addition, the Company proposes to grant to the Underwriters
an option to purchase up to 375,000 additional shares of Common Stock (the
"Optional Common Shares"), as provided in Section 4 hereof. The Firm Common
Shares and, to the extent such option is exercised, the Optional Common Shares
are hereinafter collectively referred to as the "Common Shares."

     You have advised the Company that the Underwriters propose to make a public
offering of their respective portions of the Common Shares on the effective date
of the registration statement hereinafter referred to, or as soon thereafter as
in your judgment is advisable.

     The Company hereby confirms its agreements with respect to the purchase of
the Common Shares by the Underwriters as follows:

     SECTION 2. Representations and Warranties of the Company. The Company
hereby represents and warrants to the several Underwriters that:

          (a) A registration statement on Form S-1 (File No. ________) with 
respect to the Common Shares has been prepared by the Company in conformity with
the requirements of the 


   2
Securities Act of 1933, as amended (the "Act"), and the rules and regulations
(the "Rules and Regulations") of the Securities and Exchange Commission (the
"Commission") thereunder, and has been filed with the Commission. The Company
has prepared and has filed or proposes to file prior to the effective date of
such registration statement an amendment or amendments to such registration
statement, which amendment or amendments have been or will be similarly
prepared. There have been delivered to you two signed copies of such
registration statement and amendments, together with two copies of each exhibit
filed therewith. Conformed copies of such registration statement and amendments
(but without exhibits) and of the related preliminary prospectus have been
delivered to you in such reasonable quantities as you have requested for each of
the Underwriters. The Company will next file with the Commission one of the
following: (i) prior to effectiveness of such registration statement, a further
amendment thereto, including the form of final prospectus, (ii) a final
prospectus in accordance with Rules 430A and 424(b) of the Rules and Regulations
or (iii) a term sheet (the "Term Sheet") as described in and in accordance with
Rule 434 and 424(b) of the Rules and Regulations. As filed, the final
prospectus, if one is used, or the Term Sheet and Preliminary Prospectus, if a
final prospectus is not used, shall include all Rule 430A Information and,
except to the extent that you shall agree in writing to a modification, shall be
in all substantive respects in the form furnished to you prior to the date and
time that this Agreement was executed and delivered by the parties hereto, or,
to the extent not completed at such date and time, shall contain only such
specific additional information and other changes (beyond that contained in the
latest Preliminary Prospectus) as the Company shall have previously advised you
in writing would be included or made therein.

The term "Registration Statement" as used in this Agreement shall mean such
registration statement at the time such registration statement becomes effective
and, in the event any post-effective amendment thereto becomes effective prior
to the First Closing Date (as hereinafter defined), shall also mean such
registration statement as so amended; provided, however, that such term shall
also include (i) all Rule 430A Information deemed to be included in such
registration statement at the time such registration statement becomes effective
as provided by Rule 430A of the Rules and Regulations and (ii) any registration
statement filed pursuant to 462(b) of the Rules and Regulations relating to the
Common Shares. The term "Preliminary Prospectus" shall mean any preliminary
prospectus referred to in the preceding paragraph and any preliminary prospectus
included in the Registration Statement at the time it becomes effective that
omits Rule 430A Information. The term "Prospectus" as used in this Agreement
shall mean either (i) the prospectus relating to the Common Shares in the form
in which it is first filed with the Commission pursuant to Rule 424(b) of the
Rules and Regulations or, (ii) if a Term Sheet is not used and no filing
pursuant to Rule 424(b) of the Rules and Regulations is required, shall mean the
form of final prospectus included in the Registration Statement at the time such
registration statement becomes effective or (iii) if a Term Sheet is used, the
Term Sheet in the form in which it is first filed with the Commission pursuant
to Rule 424(b) of the Rules and Regulations, together with the Preliminary
Prospectus included in the Registration Statement at the time it becomes
effective. The term "Rule 430A Information" means information with respect to
the Common Shares and the offering thereof permitted to be omitted from the
Registration Statement when it becomes effective pursuant to Rule 430A of the
Rules and Regulations.

                                       2
   3
                  (b) The Commission has not issued any order preventing or
suspending the use of any Preliminary Prospectus, and each Preliminary
Prospectus has conformed in all material respects to the requirements of the Act
and the Rules and Regulations and, as of its date, has not included any untrue
statement of a material fact or omitted to state a material fact necessary to
make the statements therein, in the light of the circumstances under which they
were made, not misleading; and at the time the Registration Statement becomes
effective, and at all times subsequent thereto up to and including each Closing
Date hereinafter mentioned, the Registration Statement and the Prospectus, and
any amendments or supplements thereto, will contain all material statements and
information required to be included therein by the Act and the Rules and
Regulations and will in all material respects conform to the requirements of the
Act and the Rules and Regulations, and neither the Registration Statement nor
the Prospectus, nor any amendment or supplement thereto, will include any untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein not misleading;
provided, however, no representation or warranty contained in this subsection
2(b) shall be applicable to information contained in or omitted from any
Preliminary Prospectus, the Registration Statement, the Prospectus or any such
amendment or supplement in reliance upon and in conformity with written
information furnished to the Company by or on behalf of any Underwriter,
directly or through the Representatives, specifically for use in the preparation
thereof.

                  (c) The Company does not own or control, directly or
indirectly, any corporation, association or other entity other than the
subsidiaries listed in Exhibit 21.1 to the Registration Statement. The Company
and each of its subsidiaries have been duly incorporated and are validly
existing as corporations in good standing under the laws of their respective
jurisdictions of incorporation, with full power and authority (corporate and
other) to own and lease their properties and conduct their respective businesses
as described in the Prospectus; the Company owns all of the outstanding capital
stock of its subsidiaries free and clear of all claims, liens, charges and
encumbrances; the Company and each of its subsidiaries are in possession of and
operating in compliance with all authorizations, licenses, permits, consents,
certificates and orders material to the conduct of their respective businesses,
all of which are valid and in full force and effect; the Company and each of its
subsidiaries are duly qualified to do business and in good standing as foreign
corporations in each jurisdiction in which the ownership or leasing of
properties or the conduct of their respective businesses requires such
qualification, except for jurisdictions in which the failure to so qualify would
not have a material adverse effect upon the Company or the subsidiary; and no
proceeding has been instituted in any such jurisdiction, revoking, limiting or
curtailing, or seeking to revoke, limit or curtail, such power and authority or
qualification.

                  (d) The Company has authorized and outstanding capital stock
as set forth under the heading "Capitalization" in the Prospectus; the issued
and outstanding shares of Common Stock have been duly authorized and validly
issued, are fully paid and nonassessable, have been issued in compliance with
all federal and state securities laws, were not issued in violation of or
subject to any preemptive rights or other rights to subscribe for or purchase
securities, and conform to the description thereof contained in the Prospectus.
All issued and outstanding shares of capital stock of each subsidiary of the
Company have been duly authorized and validly issued and are fully paid and
nonassessable. Except as disclosed in or contemplated by the Prospectus and the
financial statements of the Company, and the related notes thereto, included in
the Prospectus, neither the 


                                       3
   4
Company nor any subsidiary has outstanding any options to purchase, or any
preemptive rights or other rights to subscribe for or to purchase, any
securities or obligations convertible into, or any contracts or commitments to
issue or sell, shares of its capital stock or any such options, rights,
convertible securities or obligations. The description of the Company's stock
option, stock bonus and other stock plans or arrangements, and the options or
other rights granted and exercised thereunder, set forth in the Prospectus
accurately and fairly presents the information required to be shown with respect
to such plans, arrangements, options and rights.

                  (e) The Common Shares to be sold by the Company have been duly
authorized and, when issued, delivered and paid for in the manner set forth in
this Agreement, will be duly authorized, validly issued, fully paid and
nonassessable, and will conform to the description thereof contained in the
Prospectus. No preemptive rights or other rights to subscribe for or purchase
exist with respect to the issuance and sale of the Common Shares by the Company
pursuant to this Agreement. No stockholder of the Company has any right which
has not been waived to require the Company to register the sale of any shares
owned by such stockholder under the Act in the public offering contemplated by
this Agreement. No further approval or authority of the stockholders or the
Board of Directors of the Company will be required for the issuance and sale of
the Common Shares to be sold by the Company as contemplated herein.

                  (f) The Company has full legal right, power and authority to
enter into this Agreement and perform the transactions contemplated hereby. This
Agreement has been duly authorized, executed and delivered by the Company and
constitutes a valid and binding obligation of the Company in accordance with its
terms. The making and performance of this Agreement by the Company and the
consummation of the transactions herein contemplated will not violate any
provisions of the certificate of incorporation or bylaws, or other
organizational documents, of the Company or any of its subsidiaries, and will
not conflict with, result in the breach or violation of, or constitute, either
by itself or upon notice or the passage of time or both, a default under any
agreement, mortgage, deed of trust, lease, franchise, license, indenture, permit
or other instrument to which the Company or any of its subsidiaries is a party
or by which the Company or any of its subsidiaries or any of its respective
properties may be bound or affected, any statute or any authorization, judgment,
decree, order, rule or regulation of any court or any regulatory body,
administrative agency or other governmental body applicable to the Company or
any of its subsidiaries or any of its respective properties. No consent,
approval, authorization or other order of any court, regulatory body,
administrative agency or other governmental body is required for the execution
and delivery of this Agreement or the consummation of the transactions
contemplated by this Agreement, except for compliance with the Act, the Blue Sky
laws applicable to the public offering of the Common Shares by the several
Underwriters and the clearance of such offering with the National Association of
Securities Dealers, Inc. (the "NASD").

                  (g) Price Waterhouse LLP, who have expressed their opinion
with respect to the financial statements and schedules filed with the Commission
as a part of the Registration Statement and included in the Prospectus and in
the Registration Statement, are independent accountants as required by the Act
and the Rules and Regulations.


                                       4

   5
                  (h) The financial statements and schedules of the Company, and
the related notes thereto, included in the Registration Statement and the
Prospectus present fairly the financial position of the Company as of the
respective dates of such financial statements and schedules, and the results of
operations and changes in financial position of the Company for the respective
periods covered thereby. Such statements, schedules and related notes have been
prepared in accordance with generally accepted accounting principles applied on
a consistent basis as certified by the independent accountants named in
subsection 2(g). No other financial statements or schedules are required to be
included in the Registration Statement. The selected financial data set forth in
the Prospectus under the captions "Capitalization" and "Selected Financial Data"
fairly present the information set forth therein on the basis stated in the
Registration Statement.

                  (i) Except as disclosed in the Prospectus, and except as to
defaults which individually or in the aggregate would not be material to the
Company, neither the Company nor any of its subsidiaries is in violation or
default of any provision of its certificate of incorporation or bylaws, or other
organizational documents, or is in breach of or default with respect to any
provision of any agreement, judgment, decree, order, mortgage, deed of trust,
lease, franchise, license, indenture, permit or other instrument to which it is
a party or by which it or any of its properties are bound; and there does not
exist any state of facts which constitutes an event of default on the part of
the Company or any such subsidiary as defined in such documents or which, with
notice or lapse of time or both, would constitute such an event of default.

                  (j) There are no contracts or other documents required to be
described in the Registration Statement or to be filed as exhibits to the
Registration Statement by the Act or by the Rules and Regulations that have not
been described or filed as required. The contracts so described in the
Prospectus are accurate and complete; all such contracts are in full force and
effect on the date hereof; and neither the Company nor any of its subsidiaries,
nor to the best of the Company's knowledge, any other party is in breach of or
default under any of such contracts.

                  (k) There are no legal or governmental actions, suits or
proceedings pending or threatened to which the Company or any of its
subsidiaries is or may be a party or of which property owned or leased by the
Company or any of its subsidiaries is or may be the subject, or related to
environmental or discrimination matters, which actions, suits or proceedings
might, individually or in the aggregate, prevent or adversely affect the
transactions contemplated by this Agreement or result in a material adverse
change in the condition (financial or otherwise), properties, business, results
of operations or prospects of the Company and its subsidiaries; and no labor
disturbance by the employees of the Company or any of its subsidiaries exists or
is imminent which might be expected to affect adversely such condition,
properties, business, results of operations or prospects. Neither the Company
nor any of its subsidiaries is a party or subject to the provisions of any
material injunction, judgment, decree or order of any court, regulatory body,
administrative agency or other governmental body.

                  (l) The Company or the applicable subsidiary has good and
marketable title to all the properties and assets reflected as owned in the
financial statements hereinabove described (or elsewhere in the Prospectus),
subject to no lien, mortgage, pledge, charge or encumbrance of any kind except
(i) those, if any, reflected in such financial statements (or elsewhere in the
Prospectus), 


                                       5
   6
or (ii) those which are not material in amount and do not adversely
affect the use made and proposed to be made of such property by the Company and
its subsidiaries. The Company or the applicable subsidiary holds its leased
properties under valid and binding leases, with such exceptions as are not
materially significant in relation to the business of the Company. The Company
owns or leases all such properties as are necessary to its operations as now
conducted or as proposed to be conducted.

                  (m) Since the respective dates as of which information is
given in the Registration Statement and Prospectus, and except as described in
or specifically contemplated by the Prospectus: (i) the Company and its
subsidiaries have not incurred any material liabilities or obligations,
indirect, direct or contingent, or entered into any material verbal or written
agreement or other transaction that is not in the ordinary course of business or
which could result in a material reduction in the future earnings of the Company
and its subsidiaries; (ii) the Company and its subsidiaries have not sustained
any material loss or interference with their respective businesses or properties
from fire, flood, windstorm, accident or other calamity, whether or not covered
by insurance; (iii) the Company has not paid or declared any dividends or other
distributions with respect to its capital stock and the Company and its
subsidiaries are not in default in the payment of principal or interest on any
outstanding debt obligations; (iv) there has not been any change in the capital
stock (other than upon the sale of the Common Shares hereunder and upon the
exercise of options described in the Registration Statement) or indebtedness
material to the Company and its subsidiaries (other than in the ordinary course
of business); and (v) there has not been any material adverse change in the
condition (financial or otherwise), business, properties, results of operations
or prospects of the Company and its subsidiaries.

                  (n) Except as disclosed in or specifically contemplated by the
Prospectus, the Company and its subsidiaries have sufficient trademarks, trade
names, patent rights, mask works, copyrights, trade secret and know-how rights,
other intellectual property rights, licenses, approvals and governmental
authorizations to conduct their businesses as now conducted; the expiration of
any trademarks, trade names, patent rights, mask works, copyrights, trade secret
and know-how rights, other intellectual property rights, licenses, approvals or
governmental authorizations would not have a material adverse effect on the
condition (financial or otherwise), business, results of operations or prospects
of the Company or its subsidiaries; and the Company has no knowledge of any
material infringement by it or its subsidiaries of trademark, trade name rights,
patent rights, mask works, copyrights, trade secret and know-how rights, other
intellectual property rights, licenses, or other similar rights of others, and
there is no claim being made or threatened against the Company or its
subsidiaries regarding trademark, trade name, patent, mask work, copyright,
trade secret and know-how rights, other intellectual property rights, license,
or other infringement and, to the knowledge of the Company, there is no basis
for any such claim.

                  (o) The Company has not been advised, and has no reason to
believe, that either it or any of its subsidiaries is not conducting business in
compliance with all applicable laws, rules and regulations of the jurisdictions
in which it is conducting business, including, without limitation, all
applicable local, state and federal environmental laws and regulations; except
where failure to be so in compliance would not materially adversely affect the
condition (financial or otherwise), business, results of operations or prospects
of the Company and its subsidiaries.



                                       6
   7
                  (p) The Company and its subsidiaries have filed all necessary
federal, state and foreign income and franchise tax returns and have paid all
taxes shown as due thereon; and the Company has no knowledge of any tax
deficiency which has been or might be asserted or threatened against the Company
or its subsidiaries.

                  (q) The Company is not an "investment company" within the
meaning of the Investment Company Act of 1940, as amended.

                  (r) The Company has not distributed and will not distribute
prior to the First Closing Date any offering material in connection with the
offering and sale of the Common Shares other than the Prospectus, the
Registration Statement and the other materials permitted by the Act.

                  (s) Each of the Company and its subsidiaries maintain
insurance of the types and in the amounts generally deemed adequate for its
business, including, but not limited to, insurance covering real and personal
property owned or leased by the Company and its subsidiaries against theft,
damage, destruction, acts of vandalism and all other risks customarily insured
against, all of which insurance is in full force and effect.

                  (t) Neither the Company nor any of its subsidiaries has at any
time during the last five (5) years (i) made any unlawful contribution to any
candidate for foreign office, or failed to disclose fully any contribution in
violation of law, or (ii) made any payment to any federal or state governmental
officer or official, or other person charged with similar public or quasi-public
duties, other than payments required or permitted by the laws of the United
States or any jurisdiction thereof.

                  (u) The Company has not taken and will not take, directly or
indirectly, any action designed to or that might be reasonably expected to cause
or result in stabilization or manipulation of the price of the Common Stock to
facilitate the sale or resale of the Common Shares.

                  (v) All material transactions during the Company's current or
last three (3) fiscal years between the Company and the officers, directors and
5% stockholders of the Company have been accurately disclosed in the Prospectus
to the extent required; and the terms of each such transaction are in all
material respects fair to the Company and no less favorable to the Company than
the terms that could have been obtained from unrelated parties.

                  (w) The Company has not incurred any liability for a fee,
commission, or other compensation on account of the employment of a broker or
finder in connection with the transactions contemplated by this Agreement other
than as contemplated hereby.

                  (x) The Company has obtained the Agreement of each of its
officers, directors and stockholders not to sell, contract to sell, grant any
options to sell or otherwise dispose of, directly or indirectly, any shares of
Common Stock or securities convertible into, or exercisable or exchangeable for
Common Stock or other rights to purchase Common Stock of the Company for a
period of 180 days after the effective date of the Registration Statement
without the prior written consent of Montgomery Securities.


                                       7

   8
                  (y) The Company maintains a system of internal accounting
controls sufficient to provide reasonable assurances that (i) transactions are
executed in accordance with management's general or specific authorization; (ii)
transactions are recorded as necessary to permit preparation of financial
statements in conformity with generally accepted accounting principles and to
maintain accountability of assets; (iii) access to assets is permitted only in
accordance with management's general or specific authorization; and (iv) the
recorded accountability for assets is compared with existing assets at
reasonable intervals and appropriate action is taken with respect to any
differences.

                  (z) Each current and/or former employee, officer and
consultant of the Company has executed a proprietary information agreement in
the form or forms that have been delivered to counsel for the Underwriters.

         SECTION 3. Representations and Warranties of the Underwriters. The
Representatives, on behalf of the several Underwriters, represent and warrant to
the Company that the information set forth (i) on the cover page of the
Prospectus with respect to price, underwriting discounts and commissions and
terms of offering and (ii) under "Underwriting" in the Prospectus was furnished
to the Company by and on behalf of the Underwriters for use in connection with
the preparation of the Registration Statement and the Prospectus and is correct
in all material respects. The Representatives represent and warrant that they
have been authorized by each of the other Underwriters as the Representatives to
enter into this Agreement on its behalf and to act for it in the manner herein
provided.

         SECTION 4. Purchase, Sale and Delivery of Common Shares. On the basis
of the representations, warranties and agreements herein contained, but subject
to the terms and conditions herein set forth, the Company agrees to issue and
sell to the Underwriters the number of the Firm Common Shares described below in
Schedule A. The Underwriters agree, severally and not jointly, to purchase from
the Company the number of Firm Common Shares described below. The purchase price
per share to be paid by the several Underwriters to the Company shall be $_____
per share.

The obligation of each Underwriter to the Company shall be to purchase from the
Company that number of full shares that (as nearly as practicable, as determined
by you) bears to _______________ the same proportion as the number of shares set
forth opposite the name of such Underwriter in Schedule A hereto bears to the
total number of Firm Common Shares.

Delivery of certificates for the Firm Common Shares to be purchased by the
Underwriters and payment therefor shall be made at the offices of Montgomery
Securities, 600 Montgomery Street, San Francisco, California (or such other
place as may be agreed upon by the Company and the Representatives) at such time
and date, not later than the third (or, if the Firm Common Shares are priced, as
contemplated by Rule 15c6-1(c) under the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), after 4:30 p.m. Washington D.C. time, the fourth)
full business day following the first date that any of the Common Shares are
released by you for sale to the public, as you shall designate by at least 48
hours prior notice to the Company (the "First Closing Date"); provided, however,
that if the Prospectus is at any time prior to the First Closing Date
recirculated 


                                       8

   9
to the public, the First Closing Date shall occur upon the later of the third or
fourth, as the case may be, full business day following the first date that any
of the Common Shares are released by you for sale to the public or the date that
is 48 hours after the date that the Prospectus has been so recirculated.

Delivery of certificates for the Firm Common Shares shall be made by or on
behalf of the Company to you, for the respective accounts of the Underwriters
against payment by you, for the accounts of the several Underwriters, of the
purchase price therefor by a wire transfer of federal funds to an account
designated by the Company. The certificates for the Firm Common Shares shall be
registered in such names and denominations as you shall have requested at least
two full business days prior to the First Closing Date, and shall be made
available for checking and packaging on the business day preceding the First
Closing Date at a location in New York, New York, as may be designated by you.
Time shall be of the essence, and delivery at the time and place specified in
this Agreement is a further condition to the obligations of the Underwriters.

In addition, on the basis of the representations, warranties and agreements
herein contained, but subject to the terms and conditions herein set forth, the
Company hereby grants an option to the several Underwriters to purchase,
severally and not jointly, up to an aggregate of 375,000 Optional Common Shares
at the purchase price per share to be paid for the Firm Common Shares, for use
solely in covering any over-allotments made by you for the account of the
Underwriters in the sale and distribution of the Firm Common Shares. The option
granted hereunder may be exercised at any time (but not more than once) within
30 days after the first date that any of the Common Shares are released by you
for sale to the public, upon notice by you to the Company setting forth the
aggregate number of Optional Common Shares as to which the Underwriters are
exercising the option, the names and denominations in which the certificates for
such shares are to be registered and the time and place at which such
certificates will be delivered. Such time of delivery (which may not be earlier
than the First Closing Date), being herein referred to as the "Second Closing
Date," shall be determined by you, but if at any time other than the First
Closing Date shall not be earlier than three nor later than five full business
days after delivery of such notice of exercise. The number of Optional Common
Shares to be purchased by each Underwriter shall be determined by multiplying
the number of Optional Common Shares to be sold by the Company pursuant to such
notice of exercise by a fraction, the numerator of which is the number of Firm
Common Shares to be purchased by such Underwriter as set forth opposite its name
in Schedule A and the denominator of which is 375,000 (subject to such
adjustments to eliminate any fractional share purchases as you in your
discretion may make). Certificates for the Optional Common Shares will be made
available for checking and packaging on the business day preceding the Second
Closing Date at a location in New York, New York, as may be designated by you.
The manner of payment for and delivery of the Optional Common Shares shall be
the same as for the Firm Common Shares purchased from the Company as specified
in the two preceding paragraphs. At any time before lapse of the option, you may
cancel such option by giving written notice of such cancellation to the Company.
If the option is canceled or expires unexercised in whole or in part, the
Company will deregister under the Act the number of Option Shares as to which
the option has not been exercised.

You have advised the Company that each Underwriter has authorized you to accept
delivery of its Common Shares, to make payment and to receipt therefor. You,
individually and not as the 


                                       9
   10
Representatives of the Underwriters, may (but shall not be obligated to) make
payment for any Common Shares to be purchased by any Underwriter whose funds
shall not have been received by you by the First Closing Date or the Second
Closing Date, as the case may be, for the account of such Underwriter, but any
such payment shall not relieve such Underwriter from any of its obligations
under this Agreement.

Subject to the terms and conditions hereof, the Underwriters propose to make a
public offering of their respective portions of the Common Shares as soon after
the effective date of the Registration Statement as in the judgment of the
Representatives is advisable and at the public offering price set forth on the
cover page of and on the terms set forth in the final prospectus, if one is
used, or on the first page of the Term Sheet, if one is used.

     SECTION 5. Covenants of the Company. The Company covenants and agrees that:

                  (a) The Company will use its best efforts to cause the
Registration Statement and any amendment thereof, if not effective at the time
and date that this Agreement is executed and delivered by the parties hereto, to
become effective. If the Registration Statement has become or becomes effective
pursuant to Rule 430A of the Rules and Regulations, or the filing of the
Prospectus is otherwise required under Rule 424(b) of the Rules and Regulations,
the Company will file the Prospectus, properly completed, pursuant to the
applicable paragraph of Rule 424(b) of the Rules and Regulations within the time
period prescribed and will provide evidence satisfactory to you of such timely
filing. The Company will promptly advise you in writing (i) of the receipt of
any comments of the Commission, (ii) of any request of the Commission for
amendment of or supplement to the Registration Statement (either before or after
it becomes effective), any Preliminary Prospectus or the Prospectus or for
additional information, (iii) when the Registration Statement shall have become
effective, and (iv) of the issuance by the Commission of any stop order
suspending the effectiveness of the Registration Statement or of the institution
of any proceedings for that purpose. If the Commission shall enter any such stop
order at any time, the Company will use its best efforts to obtain the lifting
of such order at the earliest possible moment. The Company will not file any
amendment or supplement to the Registration Statement (either before or after it
becomes effective), any Preliminary Prospectus or the Prospectus of which you
have not been furnished with a copy a reasonable time prior to such filing or to
which you reasonably object or which is not in compliance with the Act and the
Rules and Regulations.

                  (b) The Company will prepare and file with the Commission,
promptly upon your request, any amendments or supplements to the Registration
Statement or the Prospectus that in your judgment may be necessary or advisable
to enable the several Underwriters to continue the distribution of the Common
Shares and will use its best efforts to cause the same to become effective as
promptly as possible. The Company will fully and completely comply with the
provisions of Rule 430A of the Rules and Regulations with respect to information
omitted from the Registration Statement in reliance upon such Rule.

                  (c) If at any time within the nine-month period referred to in
Section 10(a)(3) of the Act during which a prospectus relating to the Common
Shares is required to be delivered under the Act any event occurs, as a result
of which the Prospectus, including any amendments or 


                                       10

   11
supplements, would include an untrue statement of a material fact, or omit to
state any material fact required to be stated therein or necessary to make the
statements therein not misleading, or if it is necessary at any time to amend
the Prospectus, including any amendments or supplements, to comply with the Act
or the Rules and Regulations, the Company will promptly advise you thereof and
will promptly prepare and file with the Commission, at its own expense, an
amendment or supplement that will correct such statement or omission or an
amendment or supplement which will effect such compliance and will use its best
efforts to cause the same to become effective as soon as possible; and, in case
any Underwriter is required to deliver a prospectus after such nine-month
period, the Company upon request, but at the expense of such Underwriter, will
promptly prepare such amendment or amendments to the Registration Statement and
such Prospectus or Prospectuses as may be necessary to permit compliance with
the requirements of Section 10(a)(3) of the Act.

                  (d) As soon as practicable, but not later than 45 days after
the end of the first quarter ending after one year following the "effective date
of the Registration Statement" (as defined in Rule 158(c) of the Rules and
Regulations), the Company will make generally available to its security holders
an earnings statement (which need not be audited) covering a period of 12
consecutive months beginning after the effective date of the Registration
Statement that will satisfy the provisions of the last paragraph of Section
11(a) of the Act and the relevant Rules and Regulations (including, at the
option of the Company, Rule 158).

                  (e) During such period as a prospectus is required by law to
be delivered in connection with sales by an Underwriter or dealer, the Company,
at its expense, but only for the nine-month period referred to in Section
10(a)(3) of the Act, will furnish to you or mail to your order copies of the
Registration Statement, the Prospectus, the Preliminary Prospectus and all
amendments and supplements to any such documents in each case as soon as
available and in such quantities as you may request, for the purposes
contemplated by the Act and the relevant Rules and Regulations.

                  (f) The Company will deliver to, or upon the order of, the
Representatives, from time to time, as many copies of any Preliminary Prospectus
as the Representatives may reasonably request. The Company will deliver to, or
upon the order of, the Representatives at any time when delivery of a Prospectus
is required under the Act, as many copies of the Prospectus in final form, or as
thereafter supplemented, as the Representatives may reasonably request. The
Company will deliver to the Representatives at or before the First Closing Date
four signed copies of the Registration Statement and all amendments thereto
including all exhibits filed therewith, and will deliver to the Representatives
such number of copies of the Registration Statement, including documents
incorporated by reference therein, but without exhibits, and of all amendments
thereto, as the Representatives may reasonably request. Prior to the filing
thereof with the Commission, the Company will submit to you, for your
information, a copy of any post-effective amendment to the Registration
Statement and any supplement to the Prospectus or any amended prospectus
proposed to be filed.

                  (g) The Company shall cooperate with you and your counsel in
order to qualify or register the Common Shares for sale under (or obtain
exemptions from the application of) the Blue Sky laws of such jurisdictions as
you designate, will comply with such laws and will continue 


                                       11

   12
such qualifications, registrations and exemptions in effect so long as
reasonably required for the distribution of the Common Shares. The Company shall
not be required to qualify as a foreign corporation or to file a general consent
to service of process in any such jurisdiction where it is not presently
qualified or where it would be subject to taxation as a foreign corporation. The
Company will advise you promptly of the suspension of the qualification or
registration of (or any such exemption relating to) the Common Shares for
offering, sale or trading in any jurisdiction or any initiation or threat of any
proceeding for any such purpose, and in the event of the issuance of any order
suspending such qualification, registration or exemption, the Company, with your
cooperation, will use its best efforts to obtain the withdrawal thereof. The
Company will, from time to time, prepare and file such statements, reports, and
other documents, as are or may be required to continue such qualifications in
effect for so long a period as the Representatives may reasonably request for
distribution of the Common Shares.

                  (h) During the period of five (5) years hereafter, the Company
will furnish to the Representatives and, upon request of the Representatives, to
each of the other Underwriters: (i) as soon as practicable after the end of each
fiscal year, copies of the Annual Report of the Company containing the balance
sheet of the Company as of the close of such fiscal year and statements of
income, stockholders' equity and cash flows for the year then ended and the
opinion thereon of the Company's independent public accountants; (ii) as soon as
practicable after the filing thereof, copies of each proxy statement, Annual
Report on Form 10-K, Quarterly Report on Form 10-Q, Report on Form 8-K or other
report filed by the Company with the Commission, the NASD or any securities
exchange; and (iii) as soon as available, copies of any report or communication
of the Company mailed generally to holders of its Common Stock.

                  (i) During the period of 180 days after the first date that
any of the Common Shares are released by you for sale to the public, without the
prior written consent of Montgomery Securities (which consent may be withheld at
the sole discretion of Montgomery Securities), the Company will not, other than
(i) the Common Shares to be sold to the Underwriters pursuant to this Agreement
and (ii) shares of Common Stock issued, or issuable upon the exercise of options
granted, to employees or directors of, or consultants to, the Company (provided
that any such shares of Common Stock issued or issuable upon the exercise of
options are not transferable until after the expiration of such 180-day period)
issue, offer, sell, grant options to purchase or otherwise dispose of any of the
Company's equity securities or any other securities convertible into or
exchangeable with its Common Stock or other equity security, or file any
registration statement with the Commission other than registration statements on
Form S-8. For purposes of this paragraph (i), a sale, offer or other disposition
shall be deemed to include any sale of Common Stock to the public in reliance on
Rule 144A.

                  (j) The Company will apply the net proceeds of the sale of the
Common Shares sold by it substantially in accordance with its statements under
the caption "Use of Proceeds" in the Prospectus and will file such reports with
the Commission with respect to its sale of the Common Shares and the application
of the proceeds therefrom as may be required by Rule 463 under the Act. The
Company will invest such proceeds pending their use in such a manner that, upon
completion of such investment, the Company will not be an "investment company"
as defined in the Investment Company Act of 1940, as amended.


                                       12
   13
                  (k) The Company will use its best efforts to qualify or
register its Common Stock for sale in non-issuer transactions under (or obtain
exemptions from the application of) the Blue Sky laws of the State of California
(and thereby permit market making transactions and secondary trading in the
Company's Common Stock in California), will comply with such Blue Sky laws and
will continue such qualifications, registrations and exemptions in effect for a
period of five (5) years after the date hereof.

                  (l) The Company will use its best efforts to designate the
Common Stock for quotation as a national market system security on the Nasdaq
National Market.

                  (m) The Company will maintain a transfer agent and, if
necessary under the jurisdiction of incorporation of the Company, a registrar
(which may be the same entity as the transfer agent) for its Common Stock.

                  (n) The Company will file Form SR in conformity with the
requirements of the Act and the Rules and Regulations.

                  (o) The Company will not file a Form S-8 registration
statement until ninety (90) days after the date of the final prospectus filed
pursuant to Rule 424(b) of the Rules and Regulations.

                  (p) The Company will inform the Florida Department of Banking
and Finance at any time prior to the consummation of the distribution of the
Securities by the Underwriters if it commences engaging in business with the
government of Cuba or with any person or affiliate located in Cuba. Such
information will be provided within 90 days after the commencement thereof or
after a change occurs with respect to previously reported information.

                  (q) The Company will use its best efforts to do and perform
all things required or necessary to be done and performed under this Agreement
by the Company prior to the First Closing Date or the Second Closing Date, as
the case may be, and to satisfy all conditions precedent to the delivery of the
Common Shares.

                  (r) The Company will use its best efforts to cause all
directors, officers, and other beneficial owners of shares of Common Stock to
agree with Montgomery Securities that without the prior written consent of
Montgomery Securities (which consent may be withheld at the sole discretion of
Montgomery Securities), each of such holders will not, directly or indirectly,
sell, offer, contract to sell, make any short sale, pledge or otherwise dispose
of any shares of Common Stock (or interest therein or right thereto) that such
person, directly or indirectly, beneficially owns or may in the future
beneficially own for a period of 180 days following the commencement of the
public offering of the Firm Common Shares by the Underwriters. A person shall be
deemed to beneficially own shares of Common Stock that are issuable upon the
exercise of options, warrants or other rights to acquire Common Stock on or
before 180 days following the commencement of the public offering of the Common
Shares by the Underwriters.

                  (s) If at any time during the 25-day period after the
Registration Statement becomes effective any rumor, publication or event
relating to or affecting the Company and the 


                                       13
   14
Subsidiary shall occur as a result of which in your opinion the market price for
the Common Shares has been or is likely to be materially affected (regardless of
whether such rumor, publication or event necessitates a supplement to or
amendment of the Prospectus), the Company will, after written notice from you
advising the Company to the effect set forth above, consult in good faith with
you concerning the preparation and dissemination of a press release or other
public statement, reasonably satisfactory to you, responding to or commenting on
such rumor, publication or event.

                  You, on behalf of the Underwriters, may, in your sole
discretion, waive in writing the performance by the Company of any one or more
of the foregoing covenants or extend the time for their performance.

         SECTION 6. Payment of Expenses. Whether or not the transactions
contemplated hereunder are consummated or this Agreement becomes effective or is
terminated, the Company agrees to pay all costs, fees and expenses incurred in
connection with the performance of its obligations hereunder and in connection
with the transactions contemplated hereby, including without limiting the
generality of the foregoing, (i) all expenses incident to the issuance and
delivery of the Common Shares (including all printing and engraving costs), (ii)
all fees and expenses of the registrar and transfer agent of the Common Stock,
(iii) all necessary issue, transfer and other stamp taxes in connection with the
issuance and sale of the Common Shares to the Underwriters, (iv) all fees and
expenses of the Company's counsel and the Company's independent accountants, (v)
all costs and expenses incurred in connection with the preparation, printing,
filing, shipping and distribution of the Registration Statement, each
Preliminary Prospectus and the Prospectus (including all exhibits and financial
statements) and all amendments and supplements provided for herein, this
Agreement, the Agreement Among Underwriters, the Selected Dealers Agreement, the
Underwriters' Questionnaire, the Underwriters' Power of Attorney and the Blue
Sky memorandum, (vi) all filing fees, attorneys' fees and expenses incurred by
the Company or the Underwriters in connection with qualifying or registering (or
obtaining exemptions from the qualification or registration of) all or any part
of the Common Shares for offer and sale under the Blue Sky laws, (vii) the
filing fee of, and all fees and expenses (including any attorneys' fees)
incurred by the Company or the Underwriters incident to securing any required
approval from, the National Association of Securities Dealers, Inc., and (viii)
all other fees, costs and expenses referred to in Item 13 of the Registration
Statement. Except as provided in this Section 6, Section 8 and Section 10
hereof, the Underwriters shall pay all of their own expenses, including the fees
and disbursements of their counsel (excluding those relating to qualification,
registration or exemption under the Blue Sky laws and the Blue Sky memorandum
referred to above).

         SECTION 7. Conditions of the Obligations of the Underwriters. The
obligations of the several Underwriters to purchase and pay for the Firm Common
Shares on the First Closing Date and the Optional Common Shares on the Second
Closing Date shall be subject to the accuracy of the representations and
warranties on the part of the Company herein set forth as of the date hereof and
as of the First Closing Date or the Second Closing Date, as the case may be, to
the accuracy of the statements of Company officers made pursuant to the
provisions hereof, to the performance by the Company of its obligations
hereunder, and to the following additional conditions:


                                       14
   15
                  (a) The Registration Statement shall have become effective not
later than 5:00 P.M. (or, in the case of a registration statement filed pursuant
to Rule 462(b) of the Rules and Regulations relating to the Common Shares, not
later than 10 P.M.), Washington, D.C. Time, on the date of this Agreement, or at
such later time as shall have been consented to by you; if the filing of the
Prospectus, or any supplement thereto, is required pursuant to Rule 424(b) of
the Rules and Regulations, the Prospectus shall have been filed in the manner
and within the time period required by Rule 424(b) of the Rules and Regulations;
and prior to such Closing Date, no stop order suspending the effectiveness of
the Registration Statement shall have been issued and no proceedings for that
purpose shall have been instituted or shall be pending or, to the knowledge of
the Company or you, shall be contemplated by the Commission; and any request of
the Commission for inclusion of additional information in the Registration
Statement, or otherwise, shall have been complied with to your satisfaction.

                  (b) You shall be satisfied that since the respective dates as
of which information is given in the Registration Statement and Prospectus, (i)
there shall not have been any change in the capital stock other than pursuant to
the exercise of outstanding options disclosed in the Prospectus of the Company
or any of its subsidiaries or any material change in the indebtedness (other
than in the ordinary course of business) of the Company or any of its
subsidiaries, (ii) except as set forth or contemplated by the Registration
Statement or the Prospectus, no verbal or written agreement or other transaction
shall have been entered into by the Company or any of its subsidiaries, which is
not in the ordinary course of business or which could result in a material
reduction in the future earnings of the Company and its subsidiaries, (iii) no
loss or damage (whether or not insured) to the property of the Company or any of
its subsidiaries shall have been sustained which materially and adversely
affects the condition (financial or otherwise), business, results of operations
or prospects of the Company and its subsidiaries, (iv) no legal or governmental
action, suit or proceeding affecting the Company or any of its subsidiaries
which is material to the Company and its subsidiaries or which affects or may
affect the transactions contemplated by this Agreement shall have been
instituted or threatened, and (v) there shall not have been any material change
in the condition (financial or otherwise), business, management, results of
operations or prospects of the Company and its subsidiaries that makes it
impractical or inadvisable in the judgment of the Representatives to proceed
with the public offering or purchase the Common Shares as contemplated hereby.

                  (c) There shall have been furnished to you, as Representatives
of the Underwriters, on each Closing Date, in form and substance satisfactory to
you, except as otherwise expressly provided below:

                      (i) An opinion of Wilson, Sonsini, Goodrich & Rosati,
P.C., counsel for the Company, addressed to the Underwriters and dated the First
Closing Date, or the Second Closing Date, as the case may be, to the effect
that:

                          (1) Each of the Company and its subsidiaries has been
duly incorporated and is validly existing as a corporation in good standing
under the laws of its jurisdiction of incorporation, is duly qualified to do
business as a foreign corporation and is in good standing in all other
jurisdictions where the ownership or leasing of properties or the conduct of its


                                       15
   16
business requires such qualification, except for jurisdictions in which the
failure to so qualify would not have a material adverse effect on the Company
and its subsidiaries, and has full corporate power and authority to own its
properties and conduct its business as described in the Registration Statement;

                          (2) The authorized, issued and outstanding capital
stock of the Company is as set forth under the caption "Capitalization" in the
Prospectus; all necessary and proper corporate proceedings have been taken in
order to authorize validly such authorized Common Stock; all outstanding shares
of capital stock (including the Firm Common Shares and any Optional Common
Shares) have been duly and validly issued, are fully paid and nonassessable,
have been issued in compliance with federal and state securities laws, were not
issued in violation of or subject to any preemptive rights or other rights to
subscribe for or purchase any securities and conform to the description thereof
contained in the Prospectus; without limiting the foregoing, there are no
preemptive or other rights to subscribe for or purchase any of the Common Shares
to be sold by the Company hereunder;

                          (3) All of the issued and outstanding shares of the
Company's subsidiaries have been duly and validly authorized and issued, are
fully paid and nonassessable and are owned beneficially by the Company free and
clear of all liens, encumbrances, equities, claims, security interests, voting
trusts or other defects of title whatsoever;

                          (4) The certificates evidencing the Common Shares to
be delivered hereunder are in due and proper form under California and Delaware
corporate law, and when duly countersigned by the Company's transfer agent and
registrar, and delivered to you or upon your order against payment of the agreed
consideration therefor in accordance with the provisions of this Agreement, the
Common Shares represented thereby will be duly authorized and validly issued,
fully paid and nonassessable, will not have been issued in violation of or
subject to any preemptive rights or other rights to subscribe for or purchase
securities and will conform in all respects to the description thereof contained
in the Prospectus;

                          (5) except as disclosed in or specifically
contemplated by the Prospectus, there are no outstanding options, warrants or
other rights calling for the issuance of, and no commitments, plans or
arrangements to issue, any shares of capital stock of the Company or any
security convertible into or exchangeable for capital stock of the Company;

                          (6) (a) The Registration Statement has become
effective under the Act, and no stop order suspending the effectiveness of the
Registration Statement or preventing the use of the Prospectus has been issued
and no proceedings for that purpose have been instituted or are pending or
contemplated by the Commission; any required filing of the Prospectus and any
supplement thereto pursuant to Rule 424(b) of the Rules and Regulations has been
made in the manner and within the time period required by such Rule 424(b);

                          (b) The Registration Statement, the Prospectus and
each amendment or supplement thereto (except for the financial statements and
schedules included therein as to which such counsel need express no opinion)
comply as to form in all material 


                                       16
   17
respects with the requirements of the Act or the Exchange Act, as applicable,
and the applicable Rules and Regulations;

                          (c) The statements under the captions "Business --
[Licensing Arrangements]," "Management," "Certain Transactions," "Description of
Capital Stock" and "Shares Eligible for Future Sale" in the Prospectus and Items
14 and 15 of Part II of the Registration Statement, insofar as such statements
constitute a summary of documents referred to therein or matters of law, fairly
summarize in all material respects the information called for with respect to
such documents and matters.

                          (d) To such counsel's knowledge, there are no
franchises, leases, contracts, agreements or documents of a character required
to be disclosed in the Registration Statement or Prospectus or to be filed as
exhibits to the Registration Statement which are not disclosed or filed, as
required, and such franchises, leases, contracts, agreements and documents as
are summarized in the Registration Statement or Prospectus are fairly summarized
in all material respects; and

                          (e) To the best of such counsel's knowledge, there are
no legal or governmental actions, suits or proceedings pending or threatened
against the Company which are required to be described in the Prospectus which
are not described as required.

                     (7) The Company has full right, power and authority to
enter into this Agreement and to sell and deliver the Common Shares to be sold
by it to the several Underwriters; this Agreement has been duly and validly
authorized by all necessary corporate action by the Company, has been duly and
validly executed and delivered by and on behalf of the Company, and is a valid
and binding agreement of the Company in accordance with its terms, except as
enforceability may be limited by general equitable principles, bankruptcy,
insolvency, reorganization, moratorium or other laws affecting creditors' rights
generally and except as to those provisions relating to indemnity or
contribution for liabilities arising under the Act as to which no opinion need
be expressed; and no approval, authorization, order, consent, registration,
filing, qualification, license or permit of or with any court, regulatory,
administrative or other governmental body is required for the execution and
delivery of this Agreement by the Company or the consummation of the
transactions contemplated by this Agreement, except such as have been obtained
and are in full force and effect under the Act and such as may be required under
applicable Blue Sky laws in connection with the purchase and distribution of the
Common Shares by the Underwriters and the clearance of such offering with the
NASD;

                     (8) The execution and performance of this Agreement and the
consummation of the transactions herein contemplated will not conflict with,
result in the breach of, or constitute, either by itself or upon notice or the
passage of time or both, a default under, any agreement, mortgage, deed of
trust, lease, franchise, license, indenture, permit or other instrument known to
such counsel to which the Company or any of its subsidiaries is a party or by
which the Company or any of its subsidiaries or any of its or their property may
be bound or affected that is material to the Company and its subsidiaries, or
violate any of the provisions of the certificate of incorporation or bylaws, or
other organizational documents, of the Company or any of its 


                                       17
   18
subsidiaries or, so far as is known to such counsel, violate any statute,
judgment, decree, order, rule or regulation of any court or governmental body
having jurisdiction over the Company or any of its subsidiaries or any of its or
their property;

                     (9) Neither the Company nor any subsidiary is in violation
of its certificate of incorporation or bylaws, or other organizational
documents, or to such counsel's knowledge, in breach of or default with respect
to any provision of any agreement, mortgage, deed of trust, lease, franchise,
license, indenture, permit or other instrument known to such counsel to which
the Company or any such subsidiary is a party or by which it or any of its
properties may be bound or affected, except where such default would not
materially adversely affect the Company and its subsidiaries; and, to such
counsel's knowledge, the Company and its subsidiaries are in compliance with all
laws, rules, regulations, judgments, decrees, orders and statutes of any court
or jurisdiction to which they are subject, except where noncompliance would not
materially adversely affect the Company and its subsidiaries;

                     (10) To such counsel's knowledge, no holders of securities
of the Company have rights that have not been waived to the registration of
shares of Common Stock or other securities, because of the filing of the
Registration Statement by the Company or the offering contemplated hereby;

                     (11) No transfer taxes are required to be paid in
connection with the sale and delivery of the Common Shares to the Underwriters
hereunder.

                     (12) To such counsel's knowledge, the Company is not an
"investment company" as defined in the 1940 Act.

          In rendering such opinion, such counsel may rely as to matters of 
local law, on opinions of local counsel, and as to matters of fact, on
certificates of officers of the Company and of governmental officials, in which
case their opinion is to state that they are so doing and that the Underwriters
are justified in relying on such opinions or certificates and copies of said
opinions or certificates are to be attached to the opinion. Such counsel shall
also include a statement to the effect that nothing has come to such counsel's
attention that would lead such counsel to believe that either at the effective
date of the Registration Statement or at the applicable Closing Date the
Registration Statement or the Prospectus, or any such amendment or supplement,
contains any untrue statement of a material fact or omits to state a material
fact required to be stated therein or necessary to make the statements therein
not misleading;

               (ii) You shall have received on the Closing Date an opinion of 
Merchant, Gould, Smith, Edell, Welter & Schmidt, P.A. intellectual property
counsel for the Company, dated the Closing Date, to the effect that

                    (1) Such counsel represents the Company in certain matters
relating to intellectual property, including patents, trade secrets and certain
trademark matters;

                    (2) Such counsel is familiar with the technology used by
the Company in its business and the manner of its use and has read the portions
of the Registration Statement and


                                       18
   19
the Prospectus entitled "Risk Factor -- Dependence on Proprietary Technology;
Reliance on Third Party Licenses" and "Business -- Intellectual Property"
(collectively, the "Intellectual Property Portion");

                     (3) The Intellectual Property Portion contains accurate
descriptions of the Company's patent applications, issued and allowed patents,
and patents licensed to the Company and fairly summarizes the legal matters,
documents and proceedings relating thereto;

                     (4) Such counsel has reviewed the Company's patent
applications filed in the U.S. and outside the U.S. (the "Applications"), which
Applications are described in the Intellectual Property Portion, and based upon
such review, a review of the prior art references made known to counsel and
discussions with Company scientific personnel, such counsel is aware of no valid
United States or foreign patent that is or would be infringed by the activities
of the Company in the manufacture, licensing, use or sale of any proposed
product or process, as described in the Registration Statement or the Prospectus
or made or used according to the Applications;

                     (5) The Applications have been property prepared and filed
on behalf of the Company, and are being diligently pursued by the Company; the
inventions described in the Applications are assigned or licensed to the
Company; to such counsel's knowledge, except for patents where the Company has
obtained a field of use license, no other entity or individual has any right or
claim in any of the inventions, Applications or any patent to be issued
therefrom, and in such counsel's opinion each of the Applications discloses
patentable subject matter;

                     (6) Such counsel is aware of no pending or threatened
judicial or governmental proceeding relating to patents to which the Company is
a party or of which any property of the Company is subject and such counsel is
not aware of any pending or threatened action, suit or claim by others that the
Company is infringing or otherwise violating any patent rights of others, nor is
such counsel aware of any rights of third parties to any of the Company's
inventions described in the Applications, issued, approved or licensed patents
which could reasonably be expected to materially affect the ability of the
Company to conduct its business as described in the Registration Statement and
the Prospectus; and

                     (7) Such counsel has no reason to believe that the
information contained in the Intellectual Property Portion of the Registration
Statement or the Prospectus at the time it became effective contained any untrue
statement of a material fact or omitted to state any material fact necessary to
make the statements therein not misleading or that, at the Closing Date, the
information contained in the Intellectual Property Portion of the Prospectus
contains any untrue statement of a material fact or omits to state a material
fact necessary in order to make the statements therein, in the light of the
circumstances under which they were made, not misleading."

                         (iii) Such opinion or opinions of Gunderson Dettmer 
Stough Villeneuve Franklin & Hachigian, LLP, counsel for the Underwriters dated
the First Closing Date or the Second Closing Date, as the case may be, with
respect to the incorporation of the Company, the sufficiency of all corporate
proceedings and other legal matters relating to this Agreement, the validity of
the Common Shares, the Registration Statement and the Prospectus and other
related matters as you may reasonably require, and the Company shall have
furnished to such counsel such


                                       19
   20
documents and shall have exhibited to them such papers and records as they may
reasonably request for the purpose of enabling them to pass upon such matters.
In connection with such opinions, such counsel may rely on representations or
certificates of officers of the Company and governmental officials.

                (iv) A certificate of the Company executed by the Chairman of
the Board or President and the chief financial or accounting officer of the
Company, dated the First Closing Date or the Second Closing Date, as the case
may be, to the effect that:

                     (1) The representations and warranties of the Company set
forth in Section 2 of this Agreement are true and correct as of the date of this
Agreement and as of the First Closing Date or the Second Closing Date, as the
case may be, and the Company has complied with all the agreements and satisfied
all the conditions on its part to be performed or satisfied on or prior to such
Closing Date;

                     (2) The Commission has not issued any order preventing or
suspending the use of the Prospectus or any Preliminary Prospectus filed as a
part of the Registration Statement or any amendment thereto; no stop order
suspending the effectiveness of the Registration Statement has been issued; and
to the best of the knowledge of the respective signers, no proceedings for that
purpose have been instituted or are pending or contemplated under the Act;

                     (3) Each of the respective signers of the certificate has
carefully examined the Registration Statement and the Prospectus; in his opinion
and to the best of his knowledge, the Registration Statement and the Prospectus
and any amendments or supplements thereto contain all statements required to be
stated therein regarding the Company and its subsidiaries; and neither the
Registration Statement nor the Prospectus nor any amendment or supplement
thereto includes any untrue statement of a material fact or omits to state any
material fact required to be stated therein or necessary to make the statements
therein not misleading;

                     (4) Since the initial date on which the Registration
Statement was filed, no agreement, written or oral, transaction or event has
occurred which should have been set forth in an amendment to the Registration
Statement or in a supplement to or amendment of any prospectus which has not
been disclosed in such a supplement or amendment;

                     (5) Since the respective dates as of which information is
given in the Registration Statement and the Prospectus, and except as disclosed
in or contemplated by the Prospectus, there has not been any material adverse
change or a development involving a material adverse change in the condition
(financial or otherwise), business, properties, results of operations,
management or prospects of the Company and its subsidiaries; and no legal or
governmental action, suit or proceeding is pending or threatened against the
Company or any of its subsidiaries which is material to the Company and its
subsidiaries, whether or not arising from transactions in the ordinary course of
business, or which may adversely affect the transactions contemplated by this
Agreement; since such dates and except as so disclosed, neither the Company nor
any of its subsidiaries has entered into any verbal or written agreement or
other transaction which is not in the ordinary course of business or which could
result in a material reduction in the future earnings of the Company or incurred
any material liability or obligation, direct, contingent or indirect, made 


                                       20
   21
any change in its capital stock, made any material change in its short-term debt
or funded debt or repurchased or otherwise acquired any of the Company's capital
stock; and the Company has not declared or paid any dividend, or made any other
distribution, upon its outstanding capital stock payable to stockholders of
record on a date prior to the First Closing Date or Second Closing Date; and

                     (6) Since the respective dates as of which information is
given in the Registration Statement and the Prospectus and except as disclosed
in or contemplated by the Prospectus, the Company and its subsidiaries have not
sustained a material loss or damage by strike, fire, flood, windstorm, accident
or other calamity (whether or not insured).

                 (v)  On the date before this Agreement is executed and also
on the First Closing Date and the Second Closing Date letters addressed to you,
as Representatives of the Underwriters, from Price Waterhouse LLP, independent
accountants, the first ones to be dated the day before the date of this
Agreement, the second ones to be dated the First Closing Date and the third ones
(in the event of a Second Closing) to be dated the Second Closing Date, in form
and substance satisfactory to you.

                 (vi) On or before the First Closing Date, letters from each
holder of the Company's Common Stock and each director and officer of the
Company, in form and substance satisfactory to you, confirming that for a period
of 180 days after the first date that any of the Common Shares are released by
you for sale to the public, such person will not directly or indirectly sell or
offer to sell or otherwise dispose of any shares of Common Stock or any right to
acquire such shares without the prior written consent of Montgomery Securities
(which consent may be withheld at the sole discretion of Montgomery Securities).

All such opinions, certificates, letters and documents shall be in compliance
with the provisions hereof only if they are satisfactory to you and to Gunderson
Dettmer Stough Villeneuve Franklin & Hachigian, LLP, counsel for the
Underwriters. The Company shall furnish you with such manually signed or
conformed copies of such opinions, certificates, letters and documents as you
request. Any certificate signed by any officer of the Company and delivered to
the Representatives or to counsel for the Underwriters shall be deemed to be a
representation and warranty by the Company to the Underwriters as to the
statements made therein.

If any condition to the Underwriters' obligations hereunder to be satisfied
prior to or at the First Closing Date is not so satisfied, this Agreement at
your election will terminate upon notification by you as Representatives to the
Company without liability on the part of any Underwriter or the Company except
for the expenses to be paid or reimbursed by the Company pursuant to Sections 6
and 8 hereof and except to the extent provided in Section 10 hereof.

         SECTION 8. Reimbursement of Underwriters' Expenses. Notwithstanding any
other provisions hereof, if this Agreement shall be terminated by you pursuant
to Section 7, or if the sale to the Underwriters of the Common Shares at the
First Closing is not consummated because of any refusal, inability or failure on
the part of the Company to perform any agreement herein or to comply with any
provision hereof, the Company agrees to reimburse you and the other Underwriters
upon demand for all out-of-pocket expenses that shall have been reasonably
incurred 


                                       21
   22
by you and them in connection with the proposed purchase and the sale of the
Common Shares, including but not limited to fees and disbursements of counsel,
printing expenses, travel expenses, postage, telegraph charges and telephone
charges relating directly to the offering contemplated by the Prospectus. Any
such termination shall be without liability of any party to any other party
except that the provisions of this Section, Section 6 and Section 10 shall at
all times be effective and shall apply.

         SECTION 9.  Effectiveness of Registration Statement. You and the 
Company will use your and its best efforts to cause the Registration Statement
to become effective, to prevent the issuance of any stop order suspending the
effectiveness of the Registration Statement and, if such stop order be issued,
to obtain as soon as possible the lifting thereof.

         SECTION 10. Indemnification. (a) The Company agrees to indemnify and
hold harmless each Underwriter and each person, if any, who controls any
Underwriter within the meaning of the Act against any losses, claims, damages,
liabilities or expenses, joint or several, to which such Underwriter or such
controlling person may become subject, under the Act, the Exchange Act, or other
federal or state statutory law or regulation, or at common law or otherwise
(including in settlement of any litigation, if such settlement is effected with
the written consent of the Company), insofar as such losses, claims, damages,
liabilities or expenses (or actions in respect thereof as contemplated below)
arise out of or are based upon any untrue statement or alleged untrue statement
of any material fact contained in the Registration Statement, any Preliminary
Prospectus, the Prospectus, or any amendment or supplement thereto, or arise out
of or are based upon the omission or alleged omission to state in any of them a
material fact required to be stated therein or necessary to make the statements
in any of them not misleading, or arise out of or are based in whole or in part
on any inaccuracy in the representations and warranties of the Company contained
herein or any failure of the Company to perform its obligations hereunder or
under law; and will reimburse each Underwriter and each such controlling person
for any legal and other expenses as such expenses are reasonably incurred by
such Underwriter or such controlling person in connection with investigating,
defending, settling, compromising or paying any such loss, claim, damage,
liability, expense or action; provided, however, that the Company will not be
liable in any such case to the extent that any such loss, claim, damage,
liability or expense arises out of or is based upon an untrue statement or
alleged untrue statement or omission or alleged omission made in the
Registration Statement, any Preliminary Prospectus, the Prospectus or any
amendment or supplement thereto in reliance upon and in conformity with the
information furnished to the Company pursuant to Section 3 hereof. In addition
to its other obligations under this Section 10(a), the Company agrees that, as
an interim measure during the pendency of any claim, action, investigation,
inquiry or other proceeding arising out of or based upon any statement or
omission, or any alleged statement or omission, or any inaccuracy in the
representations and warranties of the Company herein or failure to perform its
obligations hereunder, all as described in this Section 10(a), it will reimburse
each Underwriter on a quarterly basis for all reasonable legal or other expenses
incurred in connection with investigating or defending any such claim, action,
investigation, inquiry or other proceeding, notwithstanding the absence of a
judicial determination as to the propriety and enforceability of the Company's
obligation to reimburse each Underwriter for such expenses and the possibility
that such payments might later be held to have been improper by a court of
competent jurisdiction. To the extent that any such interim reimbursement
payment is 


                                       22
   23
so held to have been improper, each Underwriter shall promptly return it to the
Company together with interest, compounded daily, determined on the basis of the
prime rate (or other commercial lending rate for borrowers of the highest credit
standing) announced from time to time by Bank of America NT&SA, San Francisco,
California (the "Prime Rate"). Any such interim reimbursement payments that are
not made to an Underwriter within 30 days of a request for reimbursement, shall
bear interest at the Prime Rate from the date of such request. This indemnity
agreement will be in addition to any liability which the Company may otherwise
have.

                  (b) Each Underwriter will severally indemnify and hold
harmless the Company, each of its directors, each of its officers who signed the
Registration Statement and each person, if any, who controls the Company within
the meaning of the Act, against any losses, claims, damages, liabilities or
expenses to which the Company, or any such director, officer or controlling
person may become subject, under the Act, the Exchange Act, or other federal or
state statutory law or regulation, or at common law or otherwise (including in
settlement of any litigation, if such settlement is effected with the written
consent of such Underwriter), insofar as such losses, claims, damages,
liabilities or expenses (or actions in respect thereof as contemplated below)
arise out of or are based upon any untrue or alleged untrue statement of any
material fact contained in the Registration Statement, any Preliminary
Prospectus, the Prospectus, or any amendment or supplement thereto, or arise out
of or are based upon the omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, in each case to the extent, but only to the extent, that
such untrue statement or alleged untrue statement or omission or alleged
omission was made in the Registration Statement, any Preliminary Prospectus, the
Prospectus, or any amendment or supplement thereto, in reliance upon and in
conformity with the information furnished to the Company pursuant to Section 3
hereof; and will reimburse the Company, or any such director, officer or
controlling person for any legal and other expense reasonably incurred by the
Company, or any such director, officer or controlling person in connection with
investigating, defending, settling, compromising or paying any such loss, claim,
damage, liability, expense or action. In addition to its other obligations under
this Section 10(b), each Underwriter severally agrees that, as an interim
measure during the pendency of any claim, action, investigation, inquiry or
other proceeding arising out of or based upon any statement or omission, or any
alleged statement or omission, described in this Section 10(b) which relates to
information furnished to the Company pursuant to Section 3 hereof, it will
reimburse the Company (and, to the extent applicable, each officer, director,
controlling person) on a quarterly basis for all reasonable legal or other
expenses incurred in connection with investigating or defending any such claim,
action, investigation, inquiry or other proceeding, notwithstanding the absence
of a judicial determination as to the propriety and enforceability of the
Underwriters' obligation to reimburse the Company (and, to the extent
applicable, each officer, director, controlling person) for such expenses and
the possibility that such payments might later be held to have been improper by
a court of competent jurisdiction. To the extent that any such interim
reimbursement payment is so held to have been improper, the Company (and, to the
extent applicable, each officer, director, controlling person) shall promptly
return it to the Underwriters together with interest, compounded daily,
determined on the basis of the Prime Rate. Any such interim reimbursement
payments which are not made to the Company within 30 days of a request for
reimbursement, shall bear interest at the Prime Rate from the date of such
request. This 


                                       23
   24
indemnity agreement will be in addition to any liability which such Underwriter
may otherwise have.

                  (c) Promptly after receipt by an indemnified party under this
Section of notice of the commencement of any action, such indemnified party
will, if a claim in respect thereof is to be made against an indemnifying party
under this Section, notify the indemnifying party in writing of the commencement
thereof; but the omission so to notify the indemnifying party will not relieve
it from any liability which it may have to any indemnified party for
contribution or otherwise than under the indemnity agreement contained in this
Section or to the extent it is not prejudiced as a proximate result of such
failure. In case any such action is brought against any indemnified party and
such indemnified party seeks or intends to seek indemnity from an indemnifying
party, the indemnifying party will be entitled to participate in, and, to the
extent that it may wish, jointly with all other indemnifying parties similarly
notified, to assume the defense thereof with counsel reasonably satisfactory to
such indemnified party; provided, however, if the defendants in any such action
include both the indemnified party and the indemnifying party and the
indemnified party shall have reasonably concluded that there may be a conflict
between the positions of the indemnifying party and the indemnified party in
conducting the defense of any such action or that there may be legal defenses
available to it and/or other indemnified parties which are different from or
additional to those available to the indemnifying party, the indemnified party
or parties shall have the right to select separate counsel to assume such legal
defenses and to otherwise participate in the defense of such action on behalf of
such indemnified party or parties. Upon receipt of notice from the indemnifying
party to such indemnified party of its election so to assume the defense of such
action and approval by the indemnified party of counsel, the indemnifying party
will not be liable to such indemnified party under this Section for any legal or
other expenses subsequently incurred by such indemnified party in connection
with the defense thereof unless (i) the indemnified party shall have employed
such counsel in connection with the assumption of legal defenses in accordance
with the proviso to the next preceding sentence (it being understood, however,
that the indemnifying party shall not be liable for the expenses of more than
one separate counsel, approved by the Representatives in the case of paragraph
10(a), representing the indemnified parties who are parties to such action or
(ii) the indemnifying party shall not have employed counsel reasonably
satisfactory to the indemnified party to represent the indemnified party within
a reasonable time after notice of commencement of the action, in each of which
cases the fees and expenses of counsel shall be at the expense of the
indemnifying party.

                  (d) If the indemnification provided for in this Section 10 is
required by its terms but is for any reason held to be unavailable to or
otherwise insufficient to hold harmless an indemnified party under paragraphs
10(a), 10(b), or 10(c) in respect of any losses, claims, damages, liabilities or
expenses referred to herein, then each applicable indemnifying party shall
contribute to the amount paid or payable by such indemnified party as a result
of any losses, claims, damages, liabilities or expenses referred to herein (i)
in such proportion as is appropriate to reflect the relative benefits received
by the Company and the Underwriters from the offering of the Common Shares or
(ii) if the allocation provided by clause (i) above is not permitted by
applicable law, in such proportion as is appropriate to reflect not only the
relative benefits referred to in clause (i) above but also the relative fault of
the Company and the Underwriters in connection with the statements or omissions
or inaccuracies in the representations and warranties herein that resulted in
such losses, 


                                       24
   25
claims, damages, liabilities or expenses, as well as any other relevant
equitable considerations. The respective relative benefits received by the
Company and the Underwriters shall be deemed to be in the same proportion, in
the case of the Company as the total price paid to the Company for the Common
Shares sold by it to the Underwriters (net of underwriting commissions but
before deducting expenses), bears to the proposed price to the public set forth
on cover of the Prospectus and in the case of the Underwriters as the
underwriting commissions received by them bears to the proposed price to the
public set forth on cover of the Prospectus. The relative fault of the Company
and the Underwriters shall be determined by reference to, among other things,
whether the untrue or alleged untrue statement of a material fact or the
omission or alleged omission to state a material fact or the inaccurate or the
alleged inaccurate representation and/or warranty relates to information
supplied by the Company or the Underwriters and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement or omission. The amount paid or payable by a party as a result of the
losses, claims, damages, liabilities and expenses referred to above shall be
deemed to include, subject to the limitations set forth in subparagraph 10(c) of
this Section 10, any legal or other fees or expenses reasonably incurred by such
party in connection with investigating or defending any action or claim. The
provisions set forth in subparagraph 10(c) of this Section 10 with respect to
notice of commencement of any action shall apply if a claim for contribution is
to be made under this subparagraph 10(d); provided, however, that no additional
notice shall be required with respect to any action for which notice has been
given under subparagraph 10(c) for purposes of indemnification. The Company and
the Underwriters agree that it would not be just and equitable if contribution
pursuant to this Section 10 were determined solely by pro rata allocation (even
if the Underwriters were treated as one entity for such purpose) or by any other
method of allocation that does not take account of the equitable considerations
referred to in the immediately preceding paragraph. Notwithstanding the
provisions of this Section 10, no Underwriter shall be required to contribute
any amount in excess of the amount of the total underwriting commissions
received by such Underwriter in connection with the Common Shares underwritten
by it and distributed to the public. No person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Act) shall be
entitled to contribution from any person who was not guilty of such fraudulent
misrepresentation. The Underwriters' obligations to contribute pursuant to this
Section 10 are several in proportion to their respective underwriting
commitments and not joint.

                  (e) It is agreed that any controversy arising out of the
operation of the interim reimbursement arrangements set forth in Sections 10(a)
and 10(b) hereof, including the amounts of any requested reimbursement payments
and the method of determining such amounts, shall be settled by arbitration
conducted under the provisions of the Constitution and Rules of the Board of
Governors of the New York Stock Exchange, Inc. or pursuant to the Code of
Arbitration Procedure of the NASD. Any such arbitration must be commenced by
service of a written demand for arbitration or written notice of intention to
arbitrate, therein electing the arbitration tribunal. In the event the party
demanding arbitration does not make such designation of an arbitration tribunal
in such demand or notice, then the party responding to said demand or notice is
authorized to do so. Such an arbitration would be limited to the operation of
the interim reimbursement provisions contained in Sections 10(a) and 10(b)
hereof and would not resolve the ultimate propriety or enforceability of the
obligation to reimburse expenses which is created by the provisions of such
Sections 10(a) and 10(b) hereof.


                                       25
   26
                  (f) The Company will not, without the prior written consent of
each of the Underwriters, settle or compromise or consent to the entry of any
judgment in any pending or threatened claim, action, suit or proceeding in
respect of which indemnification may be sought hereunder (whether or not such
Underwriter or any person who controls such Underwriter within the meaning of
Section 15 of the Act or Section 20 of the Exchange Act is a party to such
claim, action, suit or proceeding) unless such settlement, compromise or consent
includes an unconditional release of such Underwriter and each such controlling
person from all liability arising out of such claim, action, suit or proceeding.

         SECTION 11. Default of Underwriters. It shall be a condition to this
Agreement and the obligation of the Company to sell and deliver the Common
Shares hereunder, and of each Underwriter to purchase the Common Shares in the
manner as described herein, that, except as hereinafter in this paragraph
provided, each of the Underwriters shall purchase and pay for all the Common
Shares agreed to be purchased by such Underwriter hereunder upon Tender to the
Representatives of all such shares in accordance with the terms hereof. If any
Underwriter or Underwriters default in their obligations to purchase Common
Shares hereunder on either the First or Second Closing Date and the aggregate
number of Common Shares which such defaulting Underwriter or Underwriters agreed
but failed to purchase on such Closing Date does not exceed 10% of the total
number of Common Shares which the Underwriters are obligated to purchase on such
Closing Date, the non-defaulting Underwriters shall be obligated severally, in
proportion to their respective commitments hereunder, to purchase the Common
Shares which such defaulting Underwriters agreed but failed to purchase on such
Closing Date. If any Underwriter or Underwriters so default and the aggregate
number of Common Shares with respect to which such default occurs is more than
the above percentage and arrangements satisfactory to the Representatives and
the Company for the purchase of such Common Shares by other persons are not made
within 48 hours after such default, this Agreement will terminate without
liability on the part of any non-defaulting Underwriter or the Company except
for the expenses to be paid by the Company pursuant to Section 6 hereof and
except to the extent provided in Section 10 hereof.

In the event that Common Shares to which a default relates are to be purchased
by the non-defaulting Underwriters or by another party or parties, the
Representatives or the Company shall have the right to postpone the First or
Second Closing Date, as the case may be, for not more than three business days
in order that the necessary changes in the Registration Statement, Prospectus
and any other documents, as well as any other arrangements, may be effected. As
used in this Agreement, the term "Underwriter" includes any person substituted
for an Underwriter under this Section. Nothing herein will relieve a defaulting
Underwriter from liability for its default.

         SECTION 12. Effective Date. This Agreement shall become effective
immediately as to Sections 6, 8, 10, 13 and 14 and, as to all other provisions,
(i) if at the time of execution of this Agreement the Registration Statement has
not become effective, at 2:00 P.M., California time, on the first full business
day following the effectiveness of the Registration Statement, or (ii) if at the
time of execution of this Agreement the Registration Statement has been declared
effective, at 2:00 P.M., California time, on the first full business day
following the date of execution of this Agreement; but this Agreement shall
nevertheless become effective at such earlier time after the Registration
Statement becomes effective as you may determine on and by notice to the Company


                                       26
   27
or by release of any of the Common Shares for sale to the public. For the
purposes of this Section 12, the Common Shares shall be deemed to have been so
released upon the release for publication of any newspaper advertisement
relating to the Common Shares or upon the release by you of telegrams (i)
advising Underwriters that the Common Shares are released for public offering,
or (ii) offering the Common Shares for sale to securities dealers, whichever may
occur first.

         SECTION 13. Termination. Without limiting the right to terminate this
Agreement pursuant to any other provision hereof:

                  (a) This Agreement may be terminated by the Company by notice
to you or by you by notice to the Company at any time prior to the time this
Agreement shall become effective as to all its provisions, and any such
termination shall be without liability on the part of the Company to any
Underwriter (except for the expenses to be paid or reimbursed by the Company
pursuant to Sections 6 and 8 hereof and except to the extent provided in Section
10 hereof) or of any Underwriter to the Company (except to the extent provided
in Section 10 hereof).

                  (b) This Agreement may also be terminated by you prior to the
First Closing Date by notice to the Company (i) if additional material
governmental restrictions, not in force and effect on the date hereof, shall
have been imposed upon trading in securities generally or minimum or maximum
prices shall have been generally established on the New York Stock Exchange or
on the American Stock Exchange or in the over the counter market by the NASD, or
trading in securities generally shall have been suspended on either such
Exchange or in the over the counter market by the NASD, or a general banking
moratorium shall have been established by federal, New York or California
authorities, (ii) if an outbreak of major hostilities or other national or
international calamity or any substantial change in political, financial or
economic conditions shall have occurred or shall have accelerated or escalated
to such an extent, as, in the judgment of the Representatives, to affect
adversely the marketability of the Common Shares, (iii) if any adverse event
shall have occurred or shall exist which makes untrue or incorrect in any
material respect any statement or information contained in the Registration
Statement or Prospectus or which is not reflected in the Registration Statement
or Prospectus but should be reflected therein in order to make the statements or
information contained therein not misleading in any material respect, or (iv) if
there shall be any action, suit or proceeding pending or threatened, or there
shall have been any development or prospective development involving
particularly the business or properties or securities of the Company or any of
its subsidiaries or the transactions contemplated by this Agreement, which, in
the reasonable judgment of the Representatives, may materially and adversely
affect the Company's business or earnings and makes it impracticable or
inadvisable to offer or sell the Common Shares. Any termination pursuant to this
subsection 13(b) shall without liability on the part of any Underwriter to the
Company or on the part of the Company to any Underwriter (except for expenses to
be paid or reimbursed by the Company pursuant to Sections 6 and 8 hereof and
except to the extent provided in Section 10 hereof).

                  (c) This Agreement shall also terminate at 5:00 P.M.,
California time, on the tenth full business day after the Registration Statement
shall have become effective if the initial public offering price of the Common
Shares shall not then as yet have been determined as provided 


                                       27
   28
in Section 4 hereof. Any termination pursuant to this subsection 13(c) shall
without liability on the part of any Underwriter to the Company or on the part
of the Company to any Underwriter (except for expenses to be paid or reimbursed
the Company pursuant to Sections 6 and 8 hereof and except to the extent
provided in Section 10 hereof.)

         SECTION 14. Representations and Indemnities to Survive Delivery. The
respective indemnities, agreements, representations, warranties and other
statements of the Company, of its officers and of the several Underwriters set
forth in or made pursuant to this Agreement will remain in full force and
effect, regardless of any investigation made by or on behalf of any Underwriter
or the Company or any of its or their partners, officers or directors or any
controlling person, as the case may be, and will survive delivery of and payment
for the Common Shares sold hereunder and any termination of this Agreement.

         SECTION 15. Notices. All communications hereunder shall be in writing
and, if sent to the Representatives shall be mailed, delivered or faxed and
confirmed to you at 600 Montgomery Street, San Francisco, California 94111,
Attention: Clark L. Gerhardt, with a copy to Gunderson Dettmer Stough Villeneuve
Franklin & Hachigian, LLP, 600 Hansen Way, Second Floor, Palo Alto, California
94304, Attention: Brooks Stough; and if sent to the Company shall be mailed,
delivered or faxed and confirmed to the Company at 8x8, Inc., 2445 Mission
College Blvd., Santa Clara, California 95054, Attention: Joe Parkinson, with a
copy to Wilson, Sonsini, Goodrich & Rosati, P.C., 650 Page Mill Road, Palo Alto,
California 94304, Attention: Jeffrey D. Saper. The Company or you may change the
address for receipt of communications hereunder by giving notice to the others.

         SECTION 16. Successors. This Agreement will inure to the benefit of and
be binding upon the parties hereto, including any substitute Underwriters
pursuant to Section 11 hereof, and to the benefit of the officers and directors
and controlling persons referred to in Section 10, and in each case their
respective successors, personal representatives and assigns, and no other person
will have any right or obligation hereunder. No such assignment shall relieve
any party of its obligations hereunder. The term "successors" shall not include
any purchaser of the Common Shares as such from any of the Underwriters merely
by reason of such purchase.

         SECTION 17. Representation of Underwriters. You will act as
Representatives for the several Underwriters in connection with all dealings
hereunder, and any action under or in respect of this Agreement taken by you
jointly or by Montgomery Securities, as Representatives, will be binding upon
all the Underwriters.

         SECTION 18. Partial Unenforceability. The invalidity or
unenforceability of any Section, paragraph or provision of this Agreement shall
not affect the validity or enforceability of any other Section, paragraph or
provision hereof. If any Section, paragraph or provision of this Agreement is
for any reason determined to be invalid or unenforceable, there shall be deemed
to be made such minor changes (and only such minor changes) as are necessary to
make it valid and enforceable.


                                       28
   29
         SECTION 19. Applicable Law. This Agreement shall be governed by and
construed in accordance with the internal laws (and not the laws pertaining to
conflicts of laws) of the State of California.

         SECTION 20. General. This Agreement constitutes the entire agreement of
the parties to this Agreement and supersedes all prior written or oral and all
contemporaneous oral agreements, understandings and negotiations with respect to
the subject matter hereof. This Agreement may be executed in several
counterparts, each one of which shall be an original, and all of which shall
constitute one and the same document.

In this Agreement, the masculine, feminine and neuter genders and the singular
and the plural include one another. The section headings in this Agreement are
for the convenience of the parties only and will not affect the construction or
interpretation of this Agreement. This Agreement may be amended or modified, and
the observance of any term of this Agreement may be waived, only by a writing
signed by the Company and you.


                                       29
   30
If the foregoing is in accordance with your understanding of our agreement,
kindly sign and return to us the enclosed copies hereof, whereupon it will
become a binding agreement between the Company and the several Underwriters
including you, all in accordance with its terms.


                                        Very truly yours,

                                        8x8, Inc.




                                        By:  ___________________________________
                                             Joe Parkinson, Chairman and CEO


The foregoing Underwriting Agreement is 
hereby confirmed and accepted by us in
San Francisco, California as of the date 
first above written.

MONTGOMERY SECURITIES

DONALDSON, LUFKIN & JENRETTE 
SECURITIES CORPORATION

Acting as Representatives of the several 
Underwriters named in the attached
Schedule A.

By MONTGOMERY SECURITIES


By:_____________________________________
     Managing Director


   31
                                   SCHEDULE A



                                                                 Number of Firm
                                                                  Common Shares
Name of Underwriter                                              to be Purchased
- -------------------                                              ---------------
                                                                  
Montgomery Securities............................................


Donaldson, Lufkin & Jenrette Securities Corporation..............

                                                                     ---------
                           TOTAL.................................    2,500,000
                                                                     =========