<PAGE>

                          ACKNOWLEDGMENT AND AGREEMENT

         This is to acknowledge that I have received a copy of the Company's
Employee Handbook and understand that it sets forth the terms and conditions of
my employment as well as my duties, responsibilities and obligations toward the
Company. I understand and agree that it is my responsibility to read and
familiarize myself with the provisions of the Employee Handbook and to abide by
the rules, policies and standards set forth in the Employee Handbook.

         I also acknowledge that, except for the policies of at-will employment
and arbitration, the terms and conditions set forth in this handbook may be
modified, changed or deleted at any time without prior notice to me and other
employees provided such changes are in writing and approved by the President of
Company. Any agreement of any kind pertaining to my employment must be in
writing.

         I also acknowledge that my employment with Company is not for a
specified period of time and can be terminated at any time for any reason,
without cause or notice, by me or by the Company. I acknowledge that no
statements or representations regarding my employment can alter the foregoing.
As to the circumstances in which employment may be terminated, this is the
entire agreement between me and the Company; there are no oral or collateral
agreements of any kind. I agree to abide by the terms of the Employment,
Confidentiality, Assignment of Inventions, and arbitration Agreement executed by
me and the Company.

         I further agree, in accordance with the Company's Arbitration Policy,
that I will submit any dispute arising under or involving my employment with
Company or the termination of employment to binding arbitration within one year
of the date the dispute first arose. I agree that arbitration shall be the
exclusive forum for resolving all disputes arising out of or involving my
employment with Company or the termination of that employment. I agree that l
will be entitled to legal representation, at my own cost, during any such
arbitration. I further understand that I will be responsible for half of the
cost of the arbitrator and any incidental costs of arbitration.

                                            /s/ Ralph Cognac
                                           -------------------------------------
                                                      Employee's signature

                                            Ralph Cognac
                                           -------------------------------------
                                                 Employee's Name [printed]

                                                    10/12/99
                                           -------------------------------------
                                                                           Date


<PAGE>

          EMPLOYMENT, CONFIDENTIALITY & INVENTION ASSIGNMENT AGREEMENT

         As a condition and in consideration of my employment with integrated
Telecom Express, Inc., its subsidiaries, affiliates, successors or assigns
(together the "Company"), I agree:

1.       AT-WILL EMPLOYMENT. MY EMPLOYMENT WITH THE COMPANY IS FOR AN
UNSPECIFIED DURATION AND IS "AT-WILL" EMPLOYMENT. MY EMPLOYMENT MAY BE
TERMINATED BY EITHER THE COMPANY OR BY ME AT ANY TIME, WITH OR WITHOUT GOOD
CAUSE OR FOR ANY OR NO CAUSE, WITH OR WITHOUT NOTICE.

2.       CONFIDENTIAL INFORMATION. At all times I will hold in confidence and
not use, except for the benefit of the Company, or disclose without prior
written authorization, any Company Confidential Information. "Confidential
Information" includes any and all proprietary information, trade secrets or
know-how acquired during my employment either directly or indirectly in writing,
orally or by observation, provided that Confidential Information does not
include matter which became publicly known and generally available in a lawful
manner, in addition, I will not improperly use or disclose any proprietary
information or trade secrets of any former or concurrent employer or of any
other, nor will I bring or keep any such information in any form on Company
premises or property.

3.       INVENTIONS.

         (a)      INVENTIONS RETAINED AND LICENSED. I have attached as EXHIBIT A
a list describing all inventions, original works of authorship, protectible
matter and trade secrets in which I hold rights and which are not assigned to
the Company (collectively "Prior Inventions"); if no such list is attached,
there are no such Prior Inventions. I grant the Company a nonexclusive,
royalty-free, irrevocable, perpetual, worldwide license to make, have made,
modify, use, sell, offer for sale, import, and otherwise distribute any Prior
Invention which I incorporate into any Company process, product and/or property.

         (b)      ASSIGNMENT OF INVENTIONS. I will promptly make full written
disclosure and I assign to the Company, or its designees, all right, title and
interest in and to any and all inventions, works of authorship, protectible
matter and trade secrets which during my employment I may solely or jointly
conceive or develop or reduce to practice, or cause to be conceived or developed
or reduced to practice (collectively "Inventions"), except as provided in
Section 3(e) below. All protectible works of authorship which are made by me
(solely or jointly with others) within the scope of and during my employment are
"works made for hire, as that term is defined in the United States Copyright
Act.

         (c)      MAINTENANCE OF RECORDS. I will maintain adequate and current
written records of all Inventions, and these records will remain with and belong
to the Company.

         (d)      PATENT AND COPYRIGHT REGISTRATIONS. During and after my
employment, I will cooperate fully to secure, register and enforce the Company's
rights in the Inventions in any and all countries, including without limitation
signing appropriate documents. In and under all circumstances in which I fail to
and/or cannot execute such documents, I irrevocably designate and appoint the
Company and its designees as my agent and attorney, to execute and file any such
applications and do all other acts to further the prosecution, issuance and
enforcement of such registrations and rights.

         (e)      EXCEPTION TO ASSIGNMENTS. I understand that the provisions of
this Agreement requiring assignment of Inventions to the Company do not apply to
any invention which qualifies fully under the provisions of California Labor
Code Section 2870, but nevertheless will promptly advise the Company in writing
of any inventions that I believe meet the criteria of such Section.

         (f)      CONFLICT OF INTEREST, COMPANY EMPLOYEE MANUAL AND POLICY
GUIDELINES. During the term of my employment, I will strictly adhere to the
requirements of the Company Employee Manual, Conflict of Interest Guidelines,
and all applicable Company guidelines and policies.

         (g)      RETURN OF COMPANY DOCUMENTS. Immediately upon the end of my
employment, I will deliver to the Company (and will not keep in my possession,
recreate or deliver to anyone else) any and all tangible items and reproductions
of information developed by me pursuant to my employment with the Company or
otherwise belonging to the Company, and will certify my compliance with this
requirement in writing.

         (h)      NOTIFICATION. The Company may notify any third party,
including without limitation, any new or future employer, about my rights and
obligations under this Agreement.


                                      -1-
<PAGE>

         (i)      SOLICITATION OF EMPLOYEES. During, and for a period of twelve
months immediately following, my employment, I shall neither directly nor
indirectly solicit, induce, recruit or encourage any Company employees to leave
their employment, nor will I attempt or assist any others to do so.

4.       ARBITRATION AND EQUITABLE RELIEF.

         (a)      ARBITRATION. Except as provided in Section 4(b) below, any and
all disputes or controversies arising out of, relating to, or concerning this
Agreement, shall be settled exclusively by arbitration to be held in Santa Clara
County, California, in accordance with the rules then in effect of the Asia
Pacific Arbitration Association. The arbitrator may grant injunctions or other
relief in such dispute or controversy, and the arbitration shall include
provisions for protecting Company Confidential Information against disclosure.
The decision of the arbitrator shall be final, conclusive and binding on the
parties and judgment may be entered thereon in any court having jurisdiction.
The Company and I shall each pay one-half of the costs and expenses of such
arbitration, and each of us shall separately pay our counsel fees and expenses.

         THIS ARBITRATION CLAUSE CONSTITUTES A WAIVER OF EMPLOYEE'S RIGHT TO A
JURY TRIAL AND RELATES TO THE RESOLUTION OF ALL DISPUTES RELATING TO ANY AND/OR
ALL ASPECTS OF THE EMPLOYER/EMPLOYEE RELATIONSHIP (EXCEPT AS PROVIDED IN SECTION
4(B) BELOW), including, but not limited to, any and all claims for violation of
any federal, state or municipal statute, law and/or regulation, including, but
not limited to, Title VII of the Civil Rights Act of 1964, the Civil Rights Act
of 1991, the Age Discrimination in Employment Act of 1967, the Americans with
Disabilities Act of 1990, the Fair Labor Standards Act, the California Fair
Employment and Housing Act, and Labor Code Section 201, ET SEQ.

         (b)      EQUITABLE REMEDIES. It would be impossible or inadequate to
measure and calculate the Company's damages from any breach of the covenants set
forth in sections 2 and/or 3. Thus, in addition to any other right or remedy and
without any requirement of a bond or security, if I breach any of such sections,
the Company will be entitled to an injunction from a court of competent
jurisdiction restraining such breach or threatened breach and to specific
performance.

         (c)      CONSIDERATION. Each party's promise to resolve claims
exclusively by arbitration is consideration for other party's promise to do the
same, arid I am offered employment in consideration of and based upon my promise
to arbitrate.

5.       GENERAL PROVISIONS.

         (a)      GOVERNING LAW; CONSENT TO PERSONAL JURISDICTION. This
Agreement will be governed by the laws of the State of California, and I hereby
expressly consent to the personal jurisdiction of the courts located in
California for any lawsuit filed there against me by the Company.

         (b)      ENTIRE AGREEMENT. This Agreement sets forth the entire
agreement and understanding between the Company and me relating to the subject
matter herein and merges all prior discussions between us. No modification of or
amendment to this Agreement, nor any waiver of any rights under this Agreement,
will be effective unless in writing signed by the party to be charged. Any
subsequent change or changes in my duties, salary or compensation will not
affect the validity or scope of this Agreement.

         (c)      SEVERABILITY. If one or more of the provisions in this
Agreement are deemed void by law, then the remaining provisions will continue in
full force and effect.

         (d)      SUCCESSORS AND ASSIGNS. This Agreement will be binding upon my
heirs, executors, administrators and other legal representatives and will be for
the benefit of the Company, its successors, and its assigns.


/s/ Ralph Cognac
------------------------                                   ---------------------
Employee Signature                                            Company Signature

Date:    10/12/99            Print Employee Name:         Ralph Cognac
     ------------------                          -------------------------------


                                      -2-
<PAGE>

                                    EXHIBIT A

                            LIST OF PRIOR INVENTIONS
                         & ORIGINAL WORKS OF AUTHORSHIP

                                 Identifying Number
Title       Date                 or Brief Description







     X      No inventions or improvements
 ------


-------     Additional Sheets Attached.


Signature of Employee: /s/ Ralph Cognac

Print Name of Employee: Ralph Cognac

Date: 10/12/99


NOTICE: CALIFORNIA LABOR CODE SECTION 2870 EMPLOYMENT AGREEMENTS; ASSIGNMENT OF
RIGHTS PROVIDES:
         "Any provision in an employment agreement which provides that an
employee shall assign, or offer to assign, any of his or her rights in an
invention to his or her employer shall not apply to an invention that the
employee developed entirely on his or her own time without using the employer's
equipment, supplies, facilities, or trade secret information except for those
inventions that either:
         Relate at the time of conception or reduction to practice of the
invention to the employer's business, or actual or demonstrably anticipated
research or development of the employer.
         Result from any work performed by the employee for the employer.
         To the extent a provision in an employment agreement purports to
require an employee to assign an Invention otherwise excluded from being
required to be assigned under subdivision (a), the provision is against the
public policy of this state and is unenforceable."


                                      -3-
<PAGE>

       ATTACHMENT TO EMPLOYMENT; CONFIDENTIALITY AND INVENTION ASSIGNMENT
                                    AGREEMENT

                         CONFLICT OF INTEREST GUIDELINES

         It is the policy of Integrated Telecom Express, Inc., to conduct its
affairs in strict compliance with the letter and spirit of the law and to adhere
to the highest principles of business ethics. Accordingly, all officers,
employees and independent contractors must avoid activities which are in
conflict, or give the appearance of being in conflict, with these principles
and/or with the interests of the Company. The following are potentially
compromising situations which must be avoided. Any exceptions must be reported
to the President and written approval for continuation must be obtained.

         i.       Revealing confidential information to outsiders or misusing
confidential information. Unauthorized divulging of information is a violation
of this policy whether or not for personal gain and whether or not harm to the
Company is intended. (The Employment, Confidential Information and Invention
Assignment Agreement elaborates on this principle and is a binding agreement.)

         ii.      Accepting or offering (other than inconsequential) gifts,
excessive entertainment, favors or payments which may be deemed to constitute
undue influence or otherwise be improper or embarrassing to the Company.

         iii.     Participating in civic or professional organizations that
might involve divulging confidential information of the Company.

         iv.      Initiating or approving personnel actions affecting reward or
punishment of employees or applicants where there is a family relationship or is
or appears to be a personal or social involvement.

         v.       Initiating or approving any form of personal, social or other
harassment of employees.

         vi.      Investing or holding outside directorship in suppliers,
customers, or competing companies, including financial speculations, where such
investment or directorship might influence in any manner a decision or course of
action of the Company.

         vii.     Borrowing from or lending to employees, customers or
suppliers.

         viii.    Acquiring any interest in real estate or other property of
interest to the Company.

         ix.      Improperly using or disclosing to the Company any proprietary
information or trade secrets of any former or concurrent employer or other
person or entity with whom obligations of confidentiality exist.

         x.       Unlawfully discussing prices, costs, customers, sales or
markets with competing companies or their employees.

         xi.      Making any unlawful agreement with distributors with respect
to prices.


                                      -4-
<PAGE>

         xii.     Improperly using or authorizing the use of any inventions
which are the subject of patent claims of any other person or entity.

         xiii.    Engaging in any conduct which is not in the best interest of
the Company.

         xiv.     Disclosing, tipping, and/or trading upon any material
non-public information.

         xv.      Engaging in any activity which is prohibited by the securities
or other applicable laws of the United States of America or any other
jurisdiction with authority over the action in any manner relating to and/or
impacting the Company.

         Each officer, employee and independent contractor must take every
necessary action to ensure compliance with these guidelines and to bring problem
areas to the attention of higher management for review.

         Violations of this conflict of interest policy may result in discharge
without warning.


                                      -5-