Document:

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                                                                   Exhibit 10.52

[*] CERTAIN INFORMATION IN THIS EXHIBIT HAS BEEN OMITTED AND FILED SEPARATELY
WITH THE COMMISSION. CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT
TO THE OMITTED PORTIONS.

                         TECHNICAL ASSISTANCE AGREEMENT

AGREEMENT made and entered into, by and between

Matsushita Communication Industrial Co., Ltd., Communication Systems Division, a
Japanese corporation, having its principal offices at 3-1 Tsunashima-Higashi
4-chome, Kohoku-ku, Yokohama 223-8639, Japan (hereinafter called "Licensor"),
and UTStarcom Inc., a Delaware corporation, having its principal offices at 1275
Harbor Bay Parkway, Suit 100, Alameda, California 94502, U.S.A. (hereinafter
called "Licensee").

                                   WITNESSETH:

RECITALS:

Licensor and Licensee have been the parties to the technical assistance
agreement effective on October 1, 1999 which is subsequently modified, under
which Licensee is receiving from Licensor, technical assistance and information
for, and know-how in connection with, the manufacture and assembly in [*] of a
certain radio port and radio port controller.

Licensee is desirous of receiving such a technical assistance in further details
and to a higher level.

Licensor is willing and ready to render such technical assistance, information
and know-how to Licensee, all upon and subject to the terms and conditions
hereinafter set forth,

NOW, THEREFORE, in consideration of the recitals and the mutual promises herein
contained, the parties hereto agree as follows:

ARTICLE 1. DEFINITIONS

1.01  The term "Item(s)" means,
1)[*], and
2)[*],
Any other items may be added to the aforesaid items or any of the aforesaid
items may be excluded from the scope of Items by mutual written agreement or the
parties hereto and subject to the approval of the Japanese Government, if then
required.

1.02  The term "Products" means the product models and the subassemblies
therefor within the scope of Items, that are designed and/or manufactured by
Licensor during the term of this Agreement and are selected by a written
agreement of the parties hereto. The initial Products are set forth in
Exhibit A attached hereto and made a part hereof. Exhibit A may be amended by
a written agreement of the parties from time to time during the term of this
Agreement and subject to the approval of the Japanese Government, if then
required.

1.03  The term "Effective Date" means the date on which both parties signed this
Agreement (if different, the later date of signature), subject to the approval
of the Japanese Government, if necessary.

1.04  The term "Components" means parts, components, materials, subassemblies,
printed circuit boards, control cards, interface cards, accessories, packing
materials, and printed materials used in the Products.

1.05  The term "Production Equipment" means machine, tools, jigs, molds, dies,
and instruments, required by Licensee for manufacture (including assembly,
adjustment, programming, and tests) and inspection of the Products.

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1.06  The term "Production" means procurement of Production Equipment,
Components, assembly, adjustment, in-process test, quality control inspection
and repair.

1.07  The term "Calculation Period" means the periods from [*] to [*], from [*]
to [*], from [*] to [*], and from [*] to [*] of each year, and the period from
the later coming [*] to the date of termination or expiration of this Agreement.

1.08  The term "Affiliates" means companies or other entities controlling,
controlled by, or under the common control with, either party, and the term
"Subsidiaries" means, among the Affiliates, companies or other entities
controlled by either party. As used in this Article, the term "control" means
the direct or indirect ownership or control of the majority of the outstanding
shares or the ownership representing the power to direct the business of the
companies or entities, as long as such ownership or control exists.

ARTICLE 2. TECHNICAL ASSISTANCE

2.01  Technical Information and Advice:
2.01A  During the term of this Agreement, Licensor shall furnish Licensee with a
set of tangible technical information for use by Licensee in the manufacture
and/or assembly of the Products to the extent freely disposable by Licensor
without any obligation to any third party, necessary for the Production of the
Products by Licensee. Such information (hereinafter called "Technical
Information") shall be as set forth in Exhibit B attached hereto and made a part
of this Agreement.

2.01B  From time to time during the term of this Agreement, whenever a new
Product is selected pursuant to Article 1.02. hereof, Licensor will furnish
Licensee with the technical information therefor, to the extent provided for in
Article 2.01A hereof and required in addition to what has been previously
supplied. Such technical information shall also be the Technical Information.

2.01C  From time to time during the term of this Agreement, at the reasonable
request of Licensee in writing, Licensor may furnish Licensee with advice and
information which is incidental or supplemental to the Technical Information
furnished pursuant to Articles 2.01A and 2.01B hereof and which may be properly
disclosed by Licensor.

2.01D  All Technical Information furnished hereunder shall be in the English
language except for software and hardware design document in the Japanese
language, and the measurements and specifications used therein shall be in the
metric system.

2.02  Technical Service:
2.02A  From time to time during the term of this Agreement, at the reasonable
request of Licensee in writing, Licensor may permit officers and/or employees of
Licensee to visit Licensor's facilities at which it manufactures or assembles
the Products, for such periods of time as mutually agreed, to train such
personnel of Licensee in the process of manufacturing and assembling the
Products.

2.02B  From time to time during the term of this Agreement, at the reasonable
request of Licensee in writing, Licensor may send one or more of its engineers
and/or technicians to Licensee's or Sub-Licensee's facilities at which it
manufactures and/or assembles the Products, for such periods of time as mutually
agreed, to provide advisory and instructive technical service to Licensee
regarding the manufacture and/or assembly of the Products hereunder.

2.02C  Details of the terms and conditions applicable to the technical services
to be provided to Licensee as set forth in Articles 2.02A and 2.02B that are to
be rendered by Licensor's engineers or technicians visiting Licensee's factory
as herein provided shall be confirmed in writing between both parties hereto to
the extent practicable prior to any such visit.

2.02D  From time to time during the term of this Agreement, at the reasonable
request of Licensee, Licensor may inspect or test samples of the Products
produced by Licensee or the Components obtained by Licensee pursuant to the
provisions of Article 4.02 hereof, and Licensor may inform Licensee of the
results of such inspection or the test with any pertinent comments, if any, that
Licensor may have to make. Such samples shall be given to Licensor [*] and at
the [*].

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Licensee shall also reimburse Licensor, [*], for the expenses of [*] involved
after receipt by Licensee of Licensor's invoice therefor.

2.03A  All costs and expenses for the technical information, advice and services
to be provided to Licensee as set forth in Articles 2.01 and 2.02 hereof
(hereinafter called "Technical Services"), including those for technical
information, advice, technical service, accommodation, transportation to and
from Japan by air coach, meals and allowances, in respect of Licensor's
engineers and/or technicians and Licensee's officers and/or employees as the
case may be, shall be paid, or if paid by [*], shall be reimbursed, by [*] to
[*] in [*] by means of telegraphic transfer within [*] after [*] presentation to
[*] of bills or invoices for any such costs or expenses.

2.03B  The schedule of the Technical Services at the initial stage and the
payment therefor shall be set forth in Exhibit C.

2.03C  Anything to the contrary herein notwithstanding, all such personnel of
Licensor shall be deemed at all times to be employees of Licensor, subject to
Licensor's ultimate direction and control, and shall not be deemed to be
employees of Licensee.

2.03D  Governmental Approval: Any of the Technical Assistance (as defined in
Article 3.01A hereof) herein contemplated shall be made available to Licensee
subject to a required approval by the competent authority of the Japanese
Government under the Foreign Exchange and Foreign Trade Law of Japan, and/or the
Japanese governmental administration guidance if and to the extent from time to
time so required. It is further agreed by the parties hereto that any addition
or selection of Item or Product pursuant hereto and any renewal of this
Agreement shall also be subject to a required approval of the Japanese
Government under the aforesaid law and/or governmental guidance, if and to the
extent then required.

ARTICLE 3. LICENSES

3.01A  During the term of this Agreement, Licensor hereby grants to Licensee [*]
license, [*], to use the Technical Information and advice and information
related thereto and the Technical Services and such other technical assistance
as may be furnished by Licensor hereunder (all of which are hereinafter
collectively called "Technical Assistance") in order to manufacture and/or
assemble the Products in [*] for sale, use, lease or other disposition of the
same in [*].

3.01B  To the extent any patent owned by Licensor is embodied within the
Technical Assistance and is applicable to manufacturing or selling the Products,
Licensor agrees and hereby grants to Licensee during the term hereof, a [*]
license under such patent, [*], to the extent necessary to exercise the license
granted under Article 3.01A.

3.01C  [*], Licensee [*] grant a sub-license of the license granted to it under
Articles 3.01A and 3.01B to UTStarcom (Hangzhou) Telecom Co., Ltd. at Yile
Industrial Park, Building 3, 129 WenYi Road, Hangzhou 310012, P.R. China
(hereinafter called "Sub-Licensee"), as long as the Sub-Licensee remains a
Subsidiary of the Licensee and provided that Licensee obtains at its risk and
responsibility any permits and licenses necessary for such sub-license
including, but not limited to, those by the governments of U.S.A. and P.R.
China, that the Licensee shall have Sub-Licensee observe and comply with the
terms and conditions hereof, and that Licensee shall be responsible for the
performance of the Sub-Licensee. In the event there is a major change in the
management or ownership of the Sub-Licensee, the Licensee shall inform the
Licensor thereof without delay.

3.01D  In the event the Licensee or the Sub-Licensee invents, creates or
perceives any improvement, enhancement, addition or other modification on the
Products and/or Technical Assistance during the term of this Agreement, the
Licensee and the Sub-Licensee hereby grants to Licensor and its Subsidiaries a
[*] license, [*], to use such improvement, enhancement and modification in order
to manufacture/assemble the Item or sale, use, lease or other disposition of the
same.

3.01E  In the event any improvement, enhancement, addition or other modification
on the Products and/or Technical Assistance is invented, created or perceived
jointly by (i) the Licensor and (ii) the Licensee and/or Sub-Licensee during the
term of this Agreement, such improvement, enhancement, addition or other
modification shall be [*] owned by [*].

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The application for protection and its costs for such [*] owned improvement,
enhancement, addition or other modification ("[*] Property") shall be discussed
separately by the parties. Each party and its Affiliates may use such [*]
Property for any purpose without the consent of the other party and without any
compensation or accounting to the other party, provided that granting a license,
sale, transfer or other disposition of the [*] Property to any third party
(excluding respective Affiliates) requires a prior written consent of the other
party and the income resulting from such license, sale, transfer or other
disposition shall be shared [*] between the parties hereto.

ARTICLE 4. PRODUCTION EQUIPMENT & COMPONENTS

4.01  Production Equipment:
In the event that Licensee purchases any of the Production Equipment
excluding the molds and dies from any third party, Licensee agrees that in
order for Licensor to properly provide Technical Assistance to Licensee
pursuant to this Agreement, Licensee shall purchase such Production Equipment
only in accordance with the specifications therefor that are given to
Licensee by Licensor. As for the molds and dies, the Licensor provides the
specification of the Components to be manufactured with such molds and dies,
and the Licensee shall purchase the molds and dies at its sole discretion and
responsibility.

4.02  Components:
In the event Licensee purchases any Components from any third party, Licensee
agrees that in order for Licensor to properly provide Technical Assistance to
Licensee pursuant to this Agreement, any such Components that Licensee
purchases from any third party shall meet and maintain the specifications and
quality standards set therefor by Licensor.

ARTICLE 5. REMUNERATION

5.01  The parties hereto agree to establish the annual contracted minimum
quantities as to the each of the Products which Licensee shall manufactures in
[*] and sells in [*] during each annual term of this Agreement. Such contracted
minimum quantities shall be separately confirmed in writing.

5.02  In consideration of the Technical Assistance to be provided by Licensor to
Licensee and the licenses granted to Licensee pursuant to this Agreement,
Licensee agrees to pay to Licensor a technical assistance fee set forth in
Exhibit D.

5.03  Licensee agrees to provide Licensor with written reports, in such a
form as may be reasonably indicated and requested by Licensor, within [*]
after the end of each Calculation Period beginning with the Calculation
Period commencing on the Effective Date, setting forth the number of Products
shipped from Licensee and Sub-Licensee during the immediately preceding
Calculation Period, and also showing computation of the technical assistance
fee payable pursuant to the provisions of this Article and compensation of
the tax described in Article 5.05 hereof. The report following expiration or
termination of this Agreement shall include all of the Products shipped from
Licensee and Sub-Licensee prior to the expiration or termination hereof and
not previously reported to Licensor. Within [*] after the end of each
Calculation Period, Licensee shall pay to Licensor the technical assistance
fee for the Products included in such report in [*], by telegraphic transfer
to Licensor's account at such bank as shall be designated by Licensor. The
conversion to [*] from [*] shall be made based on the TTB rate quoted by the
Citibank in California, U.S.A. on the date of relative payment.

5.04  Licensee agrees to keep records showing the total number of the Products
shipped from Licensee and Sub-Licensee, and showing other related information in
sufficient detail to enable the technical assistance fee payable hereunder by
Licensee to be determined. Licensee further agrees, if Licensor so requests, to
permit its books and records to be examined by Licensor from time to time during
the term hereof and for [*] after termination or expiration hereof and to take
extracts therefrom, to verify the technical assistance fee due and payable
hereunder. Such examination shall be made at the expense of [*] its duly
authorized representative(s) or agent(s) appointed by Licensor.

5.05  The technical assistance fee payable to Licensor by Licensee hereunder is
net of the withholding tax or the tax at the source, and, if there is any such
tax, the amount of the technical assistance fee is adjusted to compensate for
such tax. Licensee shall promptly after payment of such tax furnish Licensor
with a copy or the pertinent receipt of such tax issued by the tax agency or
proof of payment thereof.

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5.06  If, as of the expiration or termination of this Agreement, there are any:
(1) Products then completed by Licensee but not yet sold or otherwise disposed
of; or (2) Products then in the process or manufacture or assembly; the
technical assistance fee shall be paid thereon, as set forth above, by Licensee
to Licensor by telegraphic transfer for all of such products within [*] after
such expiration or termination hereof. Licensee agrees to provide Licensor with
written reports in respect of any Products provided for in this Article 5.06 in
like form and manner set forth in Article 5.03 hereof, within [*], after the
expiration or termination hereof, setting forth the number of each such Product
then completed or then in process as of the date of expiration or termination
hereof.

ARTICLE 6. MAINTENANCE OF QUALITY

6.01A  Licensee agrees that in order for Licensor to properly provide the
Technical Assistance to Licensee pursuant to this Agreement, Licensee shall
strictly comply, in the Production of the Products hereunder, with all
specifications and quality standards that are reasonably established by Licensor
for Production of the Products. Licensee agrees to submit to Licensor, as
Licensor reasonably requests, Licensee's quality control and inspection data in
such form as may be reasonably established by Licensor for its inspection.
Licensee shall keep, during and for [*] after the terms of this Agreement,
copies of such quality control and inspection data so furnished to Licensor.
Licensee agrees, upon reasonable request of Licensor, to send to Licensor
samples of Products or the Components obtained by Licensee or its Sub-Licensee
in reasonable quantities. Licensor may give Licensee, as promptly as possible,
such Technical Assistance and such pertinent advice and/or instructions in
written form in English with respect to the Products and/or Components, as shall
be necessary in the reasonable opinion of Licensor after inspecting and/or
testing such samples and/or after reviewing the reports of quality control,
inspection and/or manufacturing data.

6.01B  If, at any time during the term of this Agreement, Licensee and Licensor
deem it necessary, Licensor may send to Licensee, Licensor's engineer(s) and/or
technician(s) for the purpose of checking and/or inspecting the quality and/or
performance of the Products and/or Components manufactured or assembled by,
and/or the performance of the Production Equipment and/or the quality of the
Components purchased by, Licensee or the Sub-Licensee, and in any such event,
the provisions of Article 2.03 hereof shall be applicable to such sending of
Licensor's engineer(s) and/or technician(s).

6.01C  Licensee hereby agrees to inform Licensor forthwith in writing of any
current or future standards, legal or otherwise, applicable to the Products, if
any, in [*]. Licensor agrees to provide Licensee with such information and
assistance as may be reasonably required by Licensee in obtaining any approvals,
ratings or listings for the Products.

6.02  Manufacture and assembly of the Products and the sale or other disposition
thereof by Licensee or the Sub-Licensee, as well as any guarantee thereon to
Licensee's customers of the Products including, without limitation,
responsibility for product liability, obtaining approval for the Products
pursuant to any standard, legal or otherwise, applicable to the Products, shall
be at Licensee's sole cost and expense and at Licensee's sole risk and
responsibility, and Licensor shall not be responsible therefor to Licensee, the
Sub-Licensee or any third party. Licensee shall indemnify Licensor for and hold
Licensor harmless from any losses, liabilities, damages, claims, actions, suits,
proceedings, costs and expenses (including fees and expenses of counsel) arising
out of or in connection with the use by Licensee of any Technical Assistance,
Production Equipment, Components, Technical Information, advice or service
furnished by Licensor hereunder and the manufacture or assembly and sale or
other disposition of the Products or Components hereunder, including, without
limitation, claims for product liability (excepting those claims relating to
defects in design of the Products as delivered Licensor) and obtaining approval
for the Products pursuant to any standards, legal or otherwise, applicable to
the Products or for infringement of any patents, trademarks or other proprietary
rights or any third party.

6.03  The sole obligation of Licensor with respect to the Technical Assistance,
advice or service to be provided to Licensee under this Agreement shall be to
furnish the same to Licensee as provided for in this Agreement. Licensor shall
have no responsibility for the ability of Licensee or the Sub-Licensee to use
such Technical Assistance, Technical Information, advice or service or for the
Products manufactured or assembled by Licensee or the Sub-Licensee thereunder.

                                      -5-

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ARTICLE 7. TRADEMARK

7.01  Licensee shall affix Licensee's brand name and/or its trade name
designated by Licensee on the Products. Licensee shall not use any trademark,
model numbers or tradename used by the Licensor or any mark which shall be,
in the Licensor's opinion, similar to or shall resemble such Licensor's
trademarks, model numbers or tradename, on the Products or with respect to
the sale, use, lease or other disposition thereof (including relevant
printings and advertising materials).

ARTICLE 8. GENERAL PROVISIONS

8.01  Secrecy and Unauthorized Use of Technical Information:
8.01A  Except as specifically set forth in Article 8.01 hereof or otherwise
approved by Licensor in a separate writing, Licensee agrees to treat and keep
secret and confidential and not to disclose, except as herein provided pursuant
to Article 8.01B below, to any person, Licensor's technical know-how which may
be disclosed by Licensor's engineers or technicians and/or acquired by
Licensee's officers or employees and agents, as well as all Technical
Information, advice and service furnished or disclosed by Licensor to Licensee
hereunder, except to the extent Licensee may be required to disclose the same to
obtain any approvals for the Products as provided for in Article 6 above or as
may otherwise be required by law. Licensee further shall not use any Technical
Information, advice or service furnished hereunder for any purpose other than
that of this Agreement and shall not file or cause to be filed application for
any patent or similar right in any countries based on or with respect to the
Technical Information, advice or service furnished hereunder.

8.01B  In the event Licensee shall disclose any of the Technical Information to
the Sub-Licensee, except as provided in Article 8.01A hereof, Licensee shall
obtain from the Sub-Licensee a confidential information agreement or arrangement
as shall be mutually satisfactory to Licensor and Licensee.

8.01C  Licensee shall take all necessary actions to comply and to compel
compliance with the provisions of Article 8.01A hereof and with the provisions
of any confidential information agreement or arrangement entered into pursuant
to the provisions of Article 8.01B hereof.

8.01D  The provisions of Article 8.01 hereof shall survive the expiration or
termination of this Agreement, unless and until any Technical Information and
advice or service furnished in connection therewith, as referred to in Article
8.01A above, shall have become part of the public domain or until [*] after the
expiration or termination of this Agreement.

8.02  No Warranty:
8.02A  Nothing herein contained shall be construed as the making or giving by
Licensor of any warranty or representation that any Products manufactured or
assembled by Licensee or the Sub-Licensee hereunder or that any process or
method for manufacturing or assembling the Products by Licensee or the
Sub-Licensee or that any Components or Production Equipment purchased by
Licensee or the Sub-Licensee according to the specifications supplied from
Licensor shall not infringe upon any proprietary property rights, including but
not limited to, patent rights and trademark rights owned or otherwise controlled
by a third party. Any license or permission, if any, that is required by
Licensee or the Sub-Licensee from any third party, to manufacture or assemble or
sell or otherwise dispose of the Products hereunder, shall be acquired by
Licensee [*].

8.02B  During and after the term hereof, nothing herein contained shall be
construed as the making or giving by Licensor of any warranty or representation
that any Products meet the current or future standards, legal or otherwise,
applicable to the Products, if any, in the [*].

8.03  Force Majeure:
Neither party shall be liable for delay or failure in performance arising from
any of the following: (a) acts of God, or public enemy, or war (declared or
undeclared); (b) acts of governmental or quasi-governmental authorities or any
political subdivision thereof, or of any department or agency thereof, or
regulations or restrictions imposed by law or by court action; (c) acts of
persons engaged in subversive activities or sabotage; (d) fires, floods,
explosions, or other catastrophes; (e) epidemics or quarantine restrictions; (f)
strikes, slowdowns, lockouts, or labor stoppages, or disputes of

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any kind; (g) freight embargoes or interruption of transportation; (h) any other
causes, similar or dissimilar, beyond the control of the affected party, and the
time for performance by such party shall be extended by a period of any such
delay.

8.04  Breach or Default and Waiver:
Either party hereto has the right to terminate this Agreement by giving a
written notice to the other party to that effect in the event such other
party shall have been in a material breach and/or default of this Agreement
and such material breach and/or default shall not have been corrected within
[*] after receipt of notice specifying the nature of such breach and/or
default. The termination of this Agreement shall be without any prejudice to
the rights which such terminating party may have under this Agreement. No
failure or delay on the part of any party to exercise its right of
termination of this Agreement for any one or more breaches and/or defaults
shall be construed to prejudice its rights of termination for any other or
subsequent breaches and/or defaults.

8.05  Disputes:
Any disagreement in connection herewith shall be finally settled by
arbitration. If Licensor initiates the arbitration, the arbitration shall be
held in San Francisco, California, the U.S.A. in accordance with the
International Arbitration Rules of American Arbitration Association. If
Licensee initiates the arbitration, the arbitration shall be held in Tokyo,
Japan in accordance with the Commercial Arbitration Rules of Japan Commercial
Arbitration Association.

8.06  Applicable Law:
This Agreement shall be interpreted and governed in accordance with the laws
of Japan, without reference to its conflicts of laws principles.

8.07  Assignment:
Neither this Agreement or any rights and obligations hereunder shall be
assignable or otherwise transferable by either party, voluntarily or by
operation or law or otherwise, without the prior written consent of the other
party hereto, and any assignment or transfer without such consent of the
other party shall be null and void; provided, however, that all of the terms
of this Agreement shall inure to the benefit of and shall be binding upon
each of the parties hereto and their respective successors and assigns as may
be expressly consented to in writing by the other party.

8.08  Entire Agreement and Amendment:
This Agreement and the exhibits thereto, contains the entire and only
agreement between the parties hereto with respect to the subject matter
herein contained and, this Agreement supersedes and cancels all previous
agreements, negotiations, commitments and writings with respect to the
subject matter hereof. This Agreement may not be amended, modified,
superseded or canceled, nor may any of the terms, provisions or conditions
hereof be waived, except by a written instrument duly executed by an
authorized officer of each of the parties hereto. No waiver by either party
of any condition of this Agreement, in any one instance, shall be deemed to
be or construed as a further or continuing waiver of any such condition.

8.09  Obligations After Expiration or Termination:
Except as to Products completed and/or in process as referred to in Article
5.06 hereof, upon and after the expiration or termination of this Agreement,
Licensee shall not engage, nor contract with third parties to engage, in the
manufacture or assembly or sale or other disposition of the Products, and
Licensee shall, upon and after the expiration or termination of this
Agreement, neither use nor contract with third parties to use any Technical
Information or technical know-how embodied in the Technical Information,
advice, service or other technical assistance furnished by Licensor
hereunder, and Licensee shall return to Licensor [*], within [*] after notice
to that effect sent by Licensor to Licensee, all or such Technical
Information, advice, service or other technical assistance theretofore
delivered or furnished by Licensor hereunder in tangible form relating to the
Products and the manufacture and assembly thereof, including all copies or
reproductions thereof.

8.10  Article Headings:
The article headings contained in this Agreement are for the convenience of
reference only and do not form a part of this Agreement, and shall not in any
way affect the interpretation of this Agreement.

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8.11  Notice:
For the purpose of this Agreement, any notice hereunder shall be sufficiently
given if:

8.11A  Delivered personally, in which case it shall be deemed to have been
received at the time of delivery; or

8.11B  Sent by prepaid registered or certified air mail, addressed as follows:

                To Licensee at:
                UTStarcom Inc.
                1275 Harbor Bay Parkway, Suite 100, Alameda, California 94502,
                the U.S.A.
                Attention: Russell L. Boltwood
                To Licensor at:
                Matsushita Communication Industrial Co., Ltd.
                Communication Systems Division
                4-3-1, Tsunashima-higashi, Kohoku-ku, Yokohama 223-8639, Japan
                Attention: General Manager,
                International Business Department

or to such other addresses as may hereafter be furnished in writing by either
party hereto to the other, and such mail shall be deemed conclusively to have
been received on the tenth (10th) business day of the recipient following the
date on which it is so mailed; or

8.11C  Sent by a overseas commercial courier to the address set forth in Article
8.11B, in which case it shall be deemed to have been received on the second
(2nd) business day of the recipient following the date on which it is deposited
to such courier.

8.12  Scope of Technical Assistance and Licenses:
The Technical Assistance to be provided and licenses granted pursuant to this
Agreement are solely for manufacturing, assembling and selling the Products
and not for manufacturing, assembling and selling any individual Components
or Production Equipment.

8.13  Change of Specifications:
8.13A  Licensee or the Sub-Licensee may make any change(s) in the specifications
or to the physical appearance of the Products, provided that such change(s)
shall be at the risk and responsibility of Licensee and that Licensee shall
defend, indemnify and hold Licensor harmless from any losses, liabilities,
damages, claims, actions, suits, proceedings, costs and expenses (including fees
and expenses of counsel) arising out of or in connection with such change(s).
Such changed Products shall be also deemed to be Products for the purpose of
this Agreement.

8.13B  Upon written notice to Licensee, Licensor may from time to time alter the
specifications of or substitute any Components Licensor may supply in any manner
which, in the judgment of Licensor, does not degrade the performance or quality
of such Components, without incurring any liability to Licensee.

ARTICLE 9. TERM & TERMINATION

9.01  This Agreement shall be effective for the period of [*] commencing on the
Effective Date unless earlier terminated pursuant to the provisions of this
Agreement, and after expiration of the original term, this Agreement may be
renewed by the mutual written consent of the parties hereto under the terms and
conditions to be then mutually agreed upon and subject to the approval of the
Japanese Government, if then required. Notwithstanding the foregoing in this
Article 9.01, in the event Licensee continues the manufacture of the Products
after expiration of the original term, this Agreement shall be deemed
automatically renewed year to year under the otherwise same terms and
conditions, unless Licensor gives a notice of termination at least [*] prior to
the expiration of any renewal term.

9.02  If at any time during the term of this Agreement, Licensee makes any
unauthorized use of any Technical Information, advice or service furnished by
Licensor to Licensee, Licensor shall have the right to terminate this Agreement
upon notice without prejudice to any rights which Licensor may have under or in
connection with this Agreement.

                                      -8-

<PAGE>

9.03  Should Licensee at any time default in making payment of any technical
assistance fee or in providing any report as herein provided for and fail to
remedy such default within [*] written notice to that effect given by Licensor,
Licensor may, at its option, terminate this Agreement by written notice in
writing to Licensee. No failure or delay on the part of Licensor to exercise its
right of termination of this Agreement for any one or more defaults of Licensee
in the payment of any technical assistance fee or in providing any report
pursuant hereto shall be construed to prejudice Licensor's rights of termination
hereof for any other or subsequent default.

9.04  Licensor may terminate this Agreement immediately by giving a written
notice to Licensee upon any of the following events:
(a) any arrangement with direction or any application for bankruptcy,
receivership, winding-up or other similar proceeding against Licensee and/or
Sub-Licensee shall be made by Licensee, Sub-Licensee or any person;
(b) all of or, in the opinion of Licensor, substantial part of the assets of
Licensee and/or Sub-Licensee shall be seized or attached in conjunction with any
action against Licensee and/or Sub-Licensee by any third party;
(c) a sale of all of or in the opinion of Licensor, substantially all of the
assets of Licensee and/or Sub-Licensee is made, or this Agreement is assigned by
Licensee without the prior written consent of Licensor;
(d) there occurs any such change in the capital ownership and/or management
control of Licensee and/or Sub-Licensee as, in the opinion of Licensor, may
adversely affect the performance of this Agreement and/or the benefits or rights
of Licensor in this Agreement;
(e) there occurs any difficulties, in Licensor's opinion, to perform the
obligation under this Agreement due to any of significant changes of the
political, economic or taxation policy by the governmental or quasi-governmental
organization or agencies in the [*];
(f) Licensor judges that the quality of the Products assembled by Licensee or
Sub-Licensee hereunder is found to be insufficient and such insufficiency seems
not to be corrected within a reasonable period of time;
(g) an import license of the Components and/or Production Equipment into the [*]
and/or an import license of the Components and/or Production Equipment from
Licensee to Sub-Licensee is not obtained from the competent authority of the
government of the [*], (to the extent that such license is required by law),
within [*] from the Effective Date hereof; or
(h) the sub-licensing arrangement between Licensee and Sub-Licensee is not
completed or is terminated.

9.05  Expiration or termination of this Agreement for any reason whatsoever
shall not affect the rights of Licensor or Licensee which shall have been
accrued hereunder.

9.06  The following articles shall survive any termination or expiration of this
Agreement; Articles 1, 3.01D, 3.01E, 5.02-5.06, 6.01A, 6.02, 6.03, 8, 9.05,
9.06, 10, and 11.

ARTICLE 10.

10.01  No Joint Venture:
This Agreement is not a joint venture or a partnership, and nothing herein shall
be deemed, construed or in any way interpreted to constitute the parties as
joint venturers or as partners.

10.02  Export Control:
A.  In connection with the performance of this Agreement and the transactions
contemplated hereunder, Licensor, Licensee and Sub-Licensee each hereby agree to
fully comply with all applicable provisions of the export control laws and
regulations of [*].

B.  Licensee agrees to treat all data communicated to it by Licensor as required
by the appropriate export control laws of [*]. If such data are subject to the
export control laws of Japan, Licensor shall so notify Licensee together with
the applicable Classification Numbers. Should Licensee transmit any non-public
technical data to Licensor in the course of the performance of this Agreement,
Licensor shall comply with applicable [*] regulations governing the use and
communication of such technical data. If such data are subject to the export
control regulations of the [*] Licensee shall also notify Licensor together with
the applicable Classification Numbers.

                                      -9-

<PAGE>

C.  Licensee agrees that it shall not export the Products manufactured hereunder
to any country to which export is restricted by the Export Administration
Regulations without the required approval of the [*] Government to the extent
required.

D.  Licensee and Sub-Licensee shall not knowingly sell, lease or otherwise
dispose of either any data transmitted hereunder, or the Products, directly or
indirectly, to any customer who makes use of, or is likely to or intends to make
use of, the same for "Military Purposes". For the purpose of this section,
"Military Purposes" means the design, development, manufacture or use of any
weapon, including without limitation nuclear weapon, biological weapon, chemical
weapon and missiles.

E.  In order to assure the observance and/or implementation by Licensee and
Sub-Licensee of the foregoing provisions, Licensee and Sub-Licensee shall submit
necessary documents (including without limitation, sales contract, sales notes
and invoices) in accordance with request of Licensor.

F.  In the event that Licensee and Sub-Licensee violates the provisions of this
Article 10.02, Licensee and Sub-Licensee shall jointly and severally bear
responsibility for any and all damages incurred by Licensor because of such
violation, and further, notwithstanding the provisions of Article 8.04 hereof,
Licensor shall have the right to terminate this Agreement forthwith by giving a
written notice to Licensee, without any prejudice to the rights and remedies
which Licensor may have under this Agreement.

G.  In the course of operation under this Agreement, Licensor may wish to obtain
from Licensee, technical data, whether by direct communication between Licensee
and Licensor, or by communication between Licensee and employees of Licensor who
are not U.S. citizens, but who are assigned to Licensee by Licensor. To the
extent that any such technical data is subject to U.S. export controls and may
not be exported except with prior receipt of a Letter of Assurances, this
Agreement is intended to serve as such Assurances. Licensor assures that it will
not re-export, re-transfer or otherwise release any such data or the direct
product thereof except in conformity with the then applicable U.S. export
control laws and regulations. As used in this Article 10.02, the terms
"technical data" and "direct product" shall have the meaning specified in the
U.S. Export Control Regulations.

ARTICLE 11. SEVERABILITY

11.01  If any provision(s) of this Agreement shall contravene any laws or
regulations, it is agreed that the invalidity or illegality of such provision(s)
shall not invalidate the whole of this Agreement but this Agreement shall be
construed as if it did not contain the provision(s) claimed or held to be
invalid or illegal in the particular jurisdiction concerned insofar as such
construction does not effect the substance of this Agreement, and the rights and
obligations of the parties hereto shall be construed and enforced accordingly.
In the event, however, that such claim of invalidity or illegality shall
substantially and adversely effect the interest of either party hereto, the
parties hereto shall negotiate a mutually acceptable provision(s) not
conflicting with such laws, and, if the parties hereto cannot agree upon a
substitute provision(s) within a reasonable period, Licensor or Licensee may
terminate this Agreement forthwith.

IN WITNESS WHEREOF, the parties hereto have caused this Agreement in two (2)
original counterpart instruments, to be executed and delivered in English, as of
the date written below, by their duly authorized officers.

<TABLE>
<CAPTION>

Matsushita Communication Industrial                           UTStarcom Inc.
Co., Ltd., Communication Systems Division
<S>                                                          <C>
By:                                                           By:
    -------------------------------------------------              ---------------------------------------------------
Name:   Yasuo Katsura                                         Name:   Hong Liang Lu
       ----------------------------------------------                -------------------------------------------------
Title:  Senior Managing Director                              Title:  President & CEO
        ---------------------------------------------                 ------------------------------------------------
Date:   December 1, 2000                                      Date:   December 1, 2000
       ----------------------------------------------                -------------------------------------------------
</TABLE>

                                      -10-

<PAGE>

Exhibit A
---------

                                List of Products
                                ----------------

[*]

                                      -11-

<PAGE>

Exhibit B (1/2)
---------------

                          List of Technical Information
                          -----------------------------

         Design Related Materials
         ------------------------
         [*]

         1.2  Hardware and Mechanical materials

         [*]

         1.3  Software Related materials

         [*]

                                      -12-

<PAGE>

Exhibit B (2/2)
---------------

         2  Production Related materials

         [*]

         3  Quality control & Assurance materials

         [*]

                                      -13-

<PAGE>

Exhibit D
---------

                            Technical Assistance Fee
                            ------------------------

1.   The technical assistance fee for each unit of the Products shall be
     calculated in accordance with the following formula ("Formula");

          [*]

2.   The following products shall be categories for technical assistance fee;

          [*]

                                      -14-

<PAGE>

       Schedule of Technical Services at the initial stage and the payment
       -------------------------------------------------------------------

                                       [*]

                                      -15-

<PAGE>

                       Technical Service Costs and Expense
                       -----------------------------------

                                       [*]

                                      -16-<PAGE>

                                                                   Exhibit 10.53

[*] CERTAIN INFORMATION IN THIS EXHIBIT HAS BEEN OMITTED AND FILED SEPARATELY
WITH THE COMMISSION. CONFIDENTIAL TREATMENT HAS BEEN REQUESTED WITH RESPECT
TO THE OMITTED PORTIONS.

                     DEFINITIVE AGREEMENT FOR COLLABORATION

                                   (3G W-CDMA)

THIS DEFINITIVE AGREEMENT (hereinafter referred to as "DA") is made and entered
into this 22nd of October, 2000 by and between UTStarcom Inc., having its
principal place of business at 1275 Harbor Bay Parkway, Suite 100, Alameda,
California 94502, U.S.A. (hereinafter referred to as "UTStarcom") and Mitsubishi
Electric Corporation, acting through its Communication Systems Business
Division, having its principal place of business at 8-1-1, Tsukaguchi-Honmachi,
Amagasaki, Hyogo 661-8661, Japan (hereinafter referred to as "MELCO")

                                WITNESSETH THAT;

WHEREAS, UTStarcom and MELCO (hereinafter referred to individually as a "Party"
and collectively as "Parties") have a strong intention to establish a mutually
beneficial business relationship, bringing the expertise and experiences of each
Party in China and other Asian market (hereinafter referred to as "Territory");
and

WHEREAS, UTStarcom and MELCO have concluded MEMORANDUM OF UNDERSTANDING (MoU)
(3G W-CDMA) on March 31, 2000; and

WHEREAS, UTStarcom and MELCO have concluded Joint Development Plan on June
21, 2000:

WHEREAS, The Parties have studied the business and technical feasibility of
development of 3G W-CDMA in [*] based on UTStarcom WACOS platform (hereinafter
referred to "WACOS 3G Network") in accordance with MOU:

NOW, THEREFORE, in the light of the above recitals, the Parties hereto set forth
the DA, as follows:

1.   SCOPE OF WORK FOR THE DEVELOPMENT, TIME FRAME OF MAJOR MILESTONE AND ROLE &
     RESPONSIBILITY OF PRODUCT DEVELOPMENT AND SYSTEM INTEGRATION & TESTING

     The Parties confirm to jointly develop and market a complete suite of
     infrastructure product for the 3rd generation cellular network (hereinafter
     referred to as "3G W-CDMA") with a spirit of creating and developing a new
     business based on Parties' own initiated architecture and specification in
     [*]. MELCO will develop 3G BTS and UTStarcom will develop the rest of the
     network infrastructures (RNC, MSC/GSN, NMS, etc.) of a 3G W-CDMA based on
     WACOS platform (hereinafter referred to as "the Products").

     Scope of work for development, Time frame of major milestone and Role &
     Responsibility of product development and system integration & Testing are
     described in Annex-1 (UTStarcom & Mitsubishi 3G Joint Development Plan).
<PAGE>

     The Parties shall jointly perform system integration effort in accordance
     with Addendum-1.

2.   TASK FORCE TEAM AND STEERING COMMITTEE

     During the term of this DA, the Parties internally promote their
     cooperation with all reasonable means with the aim to secure a satisfactory
     result of this DA. The Parties shall carry out and complete the development
     of the respective products with the Parties' due diligence for a joint
     business development. The Parties organize the following:

     (1) Task Force

         a.   A task force composed of two teams, one business and one
              technical, from each Party is hereby created. Each Party shall
              assign a task force leader to be in charge of ensuring the proper
              implementation of the DA and, in particular, the coordination of
              each Party's task. The names of these individuals are listed in
              Annex 2.

              The technical task force will be responsible for the execution of
              the engineering development. The business task force will be
              responsible for the execution of business development.

         b.   Task force shall meet on a regular basis, in principle once a
              month.

         c.   Important agreed decisions shall be recorded in writing and signed
              by the task force. Such signed writing shall serve as the records
              of the DA implementation.

         d.   In the event of disagreement, the task force will escalate the
              issue to the Steering Committee.

     (2) Steering Committee

         a.   The Parties create a Steering Committee including the management
              of each Party and other staff member directly involved in the
              Project as per Annex-3.

         b.   The Steering Committee shall meet regularly on quarterly basis
              unless either Party call for an extraordinary meeting for a
              purpose of management review and important decision making,
              including schedule and role & responsibility, as well as an
              effectual business development.

         c.   Decision of the Steering Committee shall be made by the Parties'
              mutual agreement. At the conclusion of each meeting, the
              representatives shall prepare minutes and sign the same.

         d.   The Steering Committee shall examine and make decisions on all
              important matters relating to this DA, including, but not limited
              to:

                  i.       Winning strategy for proactively obtaining 3G W-CDMA
                           business.

                                      -2-
<PAGE>

                  ii.      Review of implementation and execution of D/A.

                  iii.     Review of analysis of competition and carriers'
                           network planning for 3G, financial back up for 3G
                           implementation and carriers' preference of technology
                           for 3G and set an action plan to be taken.

                  iv.      All important questions raised by the task force and
                           the decisions to be made in respect thereof.

3.   COST [*]

     [*] shall bear [*] cost incurred during the system integration, in
     particular, for integration testing during the [*] phases as shown in
     Annex-4, unless otherwise agreed in this DA or separately.

     If the quantity shown in Annex-4 will be increased in future, the Parties
     shall discuss [*] with regard to extra-cost to be caused by the increase of
     the quantity.

     In the event that either Party requires support from the other party for
     successful development and execution of respective responsible portion, the
     other Party may support the requesting Party on the basis of [*].

4.   3G MOBILE SIMULATOR

     MELCO shall provide 3G mobile simulator during the [*] phases if UTStarcom
     requests for it. The quantity will be further discussed.

5.   [*] TERMS/CONDITIONS

     UTStarcom shall have the right to sell the MELCO BTS on [*] basis to
     UTStarcom's customers [*] under the condition that the BTS is still
     manufactured by MELCO.

     MELCO shall have the right to sell the UTStarcom RNC and WACOS 3G products
     on [*] basis to customers [*] under the condition that the RNC and WACOS 3G
     products are still manufactured by UTStarcom.

     In the event that MELCO or its nominees arrange Official Development Aids
     (ODA) or equivalent financing, and the financing requires MELCO's brand
     name on the MELCO BTS, UTStarcom shall use MELCO's brand name on the BTS
     for commercial proposals and any associated contracts.

     In the event that a joint venture is established between UTStarcom and
     MELCO after completion of a joint-venture feasibility study, MELCO's supply
     of the MELCO BTS to UTStarcom on [*] basis will be re-studied and
     negotiated to mutual agreement between the Parties.

                                      -3-
<PAGE>

6.   COLLABORATION OF SYSTEM INTEGRATION

     UTStarcom and MELCO shall collaborate in the system integration using
     MELCO's BTS together with UTStarcom's RNC and WACOS 3G Core Network
     products as per conditions stipulated in Addendum-1.

7.   RELEASE OF INFORMATION

     (1) UTStarcom will provide MELCO with necessary and sufficient information
         and data to the extent available, subject to Article 13(4), for MELCO's
         timely study upon MELCO's request.

     (2) MELCO will provide UTStarcom with necessary and sufficient information
         and data to the extent available, subject to Article 13(4), for
         UTStarcom's timely study upon UTStarcom's request.

8.   SUBCONTRACTING

     Subject to the stipulation set forth in the DA, each Party shall be
     entitled to subcontract, at its own risk, to a corporation or corporations
     of its choice, any part of the supplies and services allocated to it under
     this DA.

9.   PARTICIPATION OF THIRD PARTY INTO JOINT DEVELOPMENT

     UTStarcom and MELCO agree to consider a participation of an appropriate
     third company in the joint development, in case both Parties mutually judge
     that the participation of the third Party will enhance the Parties strength
     of competitiveness and a probability to win any bid in the Territory in the
     future. In such a case, the items stated in this DA shall still hold valid
     between UTStarcom and MELCO; and a separate agreement will be made among
     all Parties, reflecting this DA.

10.  PURCHASE WARRANTY

     The Parties shall honor Clause 7 of MOU signed on March 31, 2000, as it is
     clearly stipulated as a legal binding Clause in Clause 16(3) of the MOU.
     [*] shall retain the sole discretion of whether MELCO's BTS is equal or
     better than that of another vendor in terms of price, quality,
     functionality and performance, in a reasonable and fair manner with good
     faith.

     If MELCO BTS satisfies the requirements of potential customers in terms of
     technical performance (by the sole discretion of [*] in a reasonable and
     fair manner with good faith), and MELCO's price is equal or better than
     other competing BTS units (by the sole discretion of [*] in a reasonable
     and fair manner with good faith), UTStarcom shall in the best effort
     purchase [*] of UTStarcom BTS product needs from MELCO.

11.   [*]

                                      -4-
<PAGE>

12.  DISPUTES

     All disputes, controversies or differences which may arise between the
     Parties hereto, of or in relation to or in connection with this DA, whether
     during or after its term, which fails to be solved amicably, shall be
     finally resolved by arbitration in accordance with the Rules of
     Conciliation and Arbitration of the International Chamber of Commerce as in
     force on the date of this DA. The arbitration shall be held in (a) Tokyo,
     Japan in case of an arbitration claim filed by UTStarcom; and in (b) New
     York, USA in case of an arbitration claim filed by MELCO. The arbitration
     panel shall consist of three (3) arbitrators appointed in accordance with
     the said Rules. All arbitration proceeding shall be conducted in English
     language.

13.  CONFIDENTIALITY AND INDUSTRIAL AND/OR INTELLECTUAL PROPERTY

     (1) Ownership of Intellectual Property

         The Parties agree that each Party retains full and exclusive rights and
         ownership in any and all letters patent, inventions, software,
         algorithms, know-how, trademarks, copyrights and trade secrets, and any
         other proprietary rights which the Party currently possess, or develop
         independently pursuant to this DA.

     (2) Joint Invention

         It is not anticipated that the Parties shall carry out joint
         development work, but in the event that the personnel of MELCO and
         UTStarcom jointly make an invention or generate intellectual property
         rights in the course of the development, the Parties shall jointly file
         an application and have the right to use such intellectual property
         right without accounting to the other. Expenses incurred in connection
         with the filing and maintenance of the protective rights shall be
         shared equally, unless a Party elects not to file an application, in
         which case the other Party may file at its own expense and enjoy the
         exclusive ownership.

     (3) Against Infringement

         In the event a claim is brought by a third party alleging that the
         Products infringe any patent, copyright or any other intellectual
         property right of that third party, the Party having supplied the
         infringing module shall defend and settle the claim and indemnify and
         hold the other Party harmless from any fees, expenses or damages that
         may be incurred or awarded as consequence of such claim.

     (4) Confidentiality

         "Confidential Information" is all information (i) identified in written
         or oral format by the Disclosing Party as confidential, trade secret or
         proprietary information, and, if disclosed orally, summarized in
         written format within thirty (30) days of disclosure. "Disclosing
         Party" is the Party disclosing Confidential Information. "Receiving
         Party" is the Party receiving Confidential Information.

                                      -5-
<PAGE>

         The Receiving Party may use the Confidential Information solely for the
         purpose of joint development of 3G W-CDMA. The Receiving Party shall
         not disclose the Confidential Information to any third party other than
         persons in the direct employ of the Receiving Party and its
         subsidiaries who have a need to have access to and knowledge of the
         Confidential Information solely for the purpose authorized above. Each
         Party shall take appropriate measures by instruction and agreement
         prior to disclosure to such employees to assure against unauthorized
         use or disclosure.

         The Receiving Party shall have no obligation with respect to
         information which (i) was rightfully in possession of or known to the
         Receiving Party without any obligation of confidentiality prior to
         receiving it from the Disclosing Party; (ii) is, or subsequently
         becomes, legally and publicly available without breach of this
         Agreement; (iii) is rightfully obtained by the Receiving Party from a
         source other than the Disclosing Party without any obligation of
         confidentiality; (iv) is developed by or for the Receiving Party
         without use of the Confidential Information and such independent
         development can be shown by documentary evidence; (v) becomes available
         to the Receiving Party by wholly lawful inspection or analysis of
         products offered for sale; (vi) is transmitted by a Party after
         receiving written notification from the other Party that it does not
         desire to receive any further Confidential Information; (vii) is
         disclosed by the Receiving Party pursuant to a valid order issued by a
         court or government agency, provided that the Receiving Party provides
         (a) prior written notice to the Disclosing Party of such obligation and
         (b) the opportunity to oppose such disclosure.

         Upon written demand by the Disclosing Party, the Receiving Party shall:
         (i) cease using the Confidential Information, (ii) return the
         Confidential Information and all copies, notes or extracts thereof to
         the Disclosing Party within [*] of receipt of demand, and (iii) upon
         request of the Disclosing Party, certify in writing that the Receiving
         Party has complied with the obligations set forth in this paragraph.

         The terms of confidentiality under this Agreement shall not be
         construed to limit either Party's right to independently develop or
         acquire products without use of the other Party's Confidential
         Information. The Disclosing Party acknowledges that the Receiving Party
         may currently or in the future be developing information internally, or
         receiving information from other parties, that is similar to the
         Confidential Information. Accordingly, nothing in this Agreement will
         be construed as a representation or agreement that the Receiving Party
         will not develop or have developed for it products, concepts, systems
         or techniques that are similar to or compete with the products,
         concepts, systems or techniques contemplated by or embodied in the
         Confidential Information provided that the Receiving Party does not
         violate any of its obligations under this Agreement in connection with
         such development.

         Notwithstanding anything herein contained to the contrary, each Party
         shall have the right to refuse to receive any Confidential Information,
         and the right to use Residuals for any purpose, including, but not
         limited to use in development, manufacture, promotion, sale and
         maintenance of its products and services, without paying any charge to
         the Disclosing Party, provided that each Party shall maintain the
         confidentiality as provided herein and that the right to Residuals does
         not represent a license under any patent right, utility model right,

                                      -6-
<PAGE>

         design right or trade mark right of the Disclosing Party. The term
         "Residuals" means information in non-tangible form retained in the
         unaided memories of the Receiving Party's and its subsidiaries'
         employees who have had rightful access to the Disclosing Party's
         Confidential Information pursuant to the term of this Agreement. An
         employee's memory is unaided if the employee has not intentionally
         memorized the Confidential Information for the purpose of retaining and
         subsequently using or disclosing it. Both Parties agree that any
         Confidential Information disclosed hereunder by the other Party in the
         course of performance of the subject matter provided hereunder shall be
         considered as Residuals.

         Each Party shall retain all right, title and interest to such Party's
         Confidential Information. No license under any trademark, patent or
         copyright, or application for same which are now or thereafter may be
         obtained by such Party is either granted or implied by the conveying of
         Confidential Information.

         The Receiving Party shall not reverse-engineer, decompile, or
         disassemble any software disclosed to it and shall not remove,
         overprint or deface any notice of copyright, trademark, logo, legend,
         or other notices of ownership from any originals or copies of
         Confidential Information it obtains from the Disclosing Party.

         CONFIDENTIAL INFORMATION IS PROVIDED "AS IS" WITH ALL FAULTS. IN NO
         EVENT SHALL THE DISCLOSING PARTY BE LIABLE FOR THE ACCURACY OR
         COMPLETENESS OF THE CONFIDENTIAL INFORMATION.

         None of the Confidential Information disclosed by the Parties
         constitutes any representation, warranty, assurance, guarantee or
         inducement by either Party to the other with respect to the
         infringement of trademarks, patents, copyrights; any right of privacy;
         or any rights of third persons.

         Neither Party shall transmit, directly or indirectly, the Confidential
         Information or any technical data received from the other Party, nor
         the direct product thereof, without the Disclosing Party's prior
         written consent and in accordance with all export laws and regulations
         of the United States and Japan. The Parties agree that they do not
         intend nor will they, directly or indirectly, export or re-export any
         Confidential Information to any end-user who either Party knows or has
         reason to know will utilize it in the design, development or production
         of nuclear, chemical or biological weapons or to any end user who has
         been prohibited from participating in U.S. and Japanese export
         transactions by any federal agency of the U.S. and Japanese Government.

         Each Party acknowledges that monetary remedies may be inadequate to
         protect Confidential Information and that injunctive relief may be
         appropriate to protect such Confidential Information.

         Not withstanding the foregoing sentence, each Party may disclose joint
         developed Interface specification between MELCO's 3G BTS and
         UTStarcom's WACOS PNC and Interface specification between MELCO's 3G
         BTS and UTStarcom's WACOS Network Management Center to third party who
         agree in writing to be bound by the provisions hereof, provided that

                                      -7-
<PAGE>

         the third party shall not disclose the specifications to any other
         party. The Parties shall take every reasonable precaution to protect
         the confidentiality of Confidential Information or materials to be
         confidential. In the event of termination of this DA, there shall be no
         use or disclosure by either Party of any Confidential Information of
         the other Party, and neither Party shall manufacture or have
         manufactured any product, devices, components or assemblies utilizing
         any of the other Party's Confidential Information absent a prior
         written agreement between the Parties. Additionally, neither Party
         shall use the name of the other party in any news release, public
         announcement, advertisement or other form of publicity without the
         prior written consent of the other Party.

14.  EFFECTIVE DATE -- TERM

     This DA comes into force as soon as it is signed by the Parties and shall
     remain valid until December 31st, 2002 or the date to be mutually agreed.
     Within [*] before December 31st, 2002 or the date extended by mutual
     agreement, the Steering Committee shall decide on the future course of the
     cooperation or extension of this DA.

15.  ASSIGNMENT

     Both parties [*] the right to assign or transfer any or all of its rights
     and obligations under this DA to any third party without the prior written
     agreement of the other Parties.

16.  TERMINATION OF THE AGREEMENT AND INDEMNIFICATION

     Either Party shall have the right to terminate this DA for default by the
     other in performance of any substantial obligation or material breach of
     this DA where such default or breach continues for a period of [*] after
     written notice thereof to the defaulting Party.

     In case this DA is terminated, as per this clause, the defaulting party
     shall be responsible for the compensation of the direct loss, which the
     other party may suffer because of the termination of this DA. In any case,
     the Parties shall not be responsible for each other for indirect and/or
     consequential loss.

17.  GOVERNING LAW

     This DA shall be construed in accordance with the laws of New York State,
     USA.

18.  COMMUNICATIONS-ADVERTISING

     (1) Both parties shall not make any announcement or communicate any
         information to a third party concerning the purpose of this DA without
         the prior approval of the other Party, except as may be required by
         applicable law.
     (2) Any advertising by one Party shall make reference to the other Party.
     (3) Public announcement and/or press release related to this DA will be
         done at appropriate time subject to the agreement by the Parties.

                                      -8-
<PAGE>

19.  OTHERS

     (1) Headings
         Headings to articles of this DA are to facilitate reference only, do
         not form a part of this DA, and shall in no way affect its
         interpretation.

     (2) Entire Agreement
         This DA represents the entire agreement between the Parties regarding
         its subject matter superseding previous communications or
         understandings. This DA may not be modified except by written approval
         by the Parties.

     (3) Partnership disclaimer
         In principle, the relationship of UTStarcom and MELCO established by
         this DA shall be that of prime contractor and key subcontractor as a
         team member, and nothing contained in this DA shall be construed:
         i.     to give either Party the power to direct or control the day-to-
                day activities of the other or:
         ii.    to constitute the Parties as partners, joint venture, co-owner
                or otherwise as participants in a joint or common undertaking.

20.  EFFECTIVENESS OF AGREEMENT

     This agreement is legally binding, but subject to final legal rewording.

                                      -9-
<PAGE>

IN WITNESS WHEREOF, The Parties hereto have caused their representatives, duly
executed in two (2) original copies by their duly authorized representative.

UTStarcom Inc                              Mitsubishi Electric Corporation

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

Name: Hong Liang Lu                        Name: Teruhiko Moriyama

Title: President and CEO                   Title: Division President
                                                  Communication Systems Business
                                                  Division

Date: October 22, 2000                     Date:  October 22, 2000
     ----------------------------               --------------------------------

                                      -10-
<PAGE>

ANNEX-1

Refer to the Joint Development Plan signed by MELCO and UTStarcom on Jun-21,
2000.

<PAGE>

ANNEX-2

MELCO TASK FORCE TEAM

-    Lead:
         M. Todo, Group Manager,
         International Marketing & Business Development Department

-    Technical:
         K. Mihashi, Project Manager,
         H. Kojima, Manager,
         Mobile Communication Network Systems Department

-    Business:
         T. Aoki, Senior Manager,
         International Marketing & Business Development Department

UTSTARCOM TASK FORCE TEAM

-    Lead:            Pat Chan, Director, Mobile Network

-    Technical:       Phil Lee, System Project Manager,

-    Business:        Jack Wu, Director, Product Management

<PAGE>

ANNEX-3

MELCO STEERING COMMITTEE MEMBERS:

T. Moriyama:               Division President
                           Communication Systems Business Division

K. Teshima:                Deputy Division President
                           Communication Systems Business Division
                           Carrier Network Systems Business Center

S. Aoyama:                 General Manager
                           Communication System R&D Center

K. Kimura:                 General Manager
                           Mobile Communication Network Systems Department

T. Kanamori:               General Manager
                           International Marketing & Business Development
                           Department

M. Todo:                   Group Manager,
                           International Marketing & Business Development
                           Department

UTSTARCOM STEERING COMMITTEE MEMBERS:

Hong Lu:                   President and CEO

Bill Huang:                Vice President
                           Chief Technology Officer

Pat Chan:                  Director, Mobile Network

Jack Wu:                   Director, Product Management

<PAGE>

ANNEX-4

SYSTEM INTEGRATION CORE NETWORK/RNC & UE/BTS REQUIREMENT

(1) For System Integration [*]

              [*]

(2) For Debug [*]

              [*]

<PAGE>

ADDENDUM-1

1.   SYSTEM INTEGRATION DEVELOPMENT EFFORTS FOR RNC AND BTS UNITS:

a.   The Parties shall jointly develop a complete suite of infrastructure
     products for 3G cellular network based on each Parties' own initiated
     architecture and specifications. MELCO will develop a 3G BTS, and UTStarcom
     will develop a RNC based upon the UTStarcom WACOS product platform.
b.   The Parties shall collaborate as to the development of the Interface
     specifications between the BTS and RNC units ("Iub").
c.   MELCO shall develop the BTS in accordance with Iub. UTStarcom shall develop
     the RNC unit which will function with MELCO BTS in accordance with Iub.
d.   UTStarcom shall be responsible for developing, producing and supplying the
     RNC by itself without MELCO's engineering support; except for Iub interface
     for BTS and RNC which is under joint development with MELCO's initiative.
e.   Upon the request of MELCO, and after payment to UTStarcom as stipulated in
     Item 2 below, UTStarcom shall provide MELCO with necessary assistance as to
     UTStarcom RNC for MELCO proposals to potential customers for implementation
     of the UTStarcom RNC with MELCO's BTS and UTStarcom 3G Core Network.
f.   MELCO will provide BTS for UTStarcom primarily for [*] market where
     UTStarcom can lead marketing of W-CDMA infrastructure, while UTStarcom
     shall provide RNC for MELCO where MELCO can lead marketing of W-CDMA
     infrastructure. Conditions of Agreement shall be mutually agreed upon.

2.   PAYMENT TERMS:

In consideration that
     (1) UTStarcom having a joint integration with MELCO's BTS and providing
         MELCO the binary software of the RNC, together with the associated
         documents to MELCO. The documents shall include: Specification of WACOS
         and Basic Specification of RNC by [*]; Specification and Drawing of RNC
         by [*]; and binary RNC software and Operation Manual of RNC by [*]
         (worth of [*]);
     (2) UTStarcom providing one set of RNC and WACOS 3G products to MELCO as
         test bench after the [*] (worth of [*]);
     (3) Upgrading (2) to General Availability (GA) version (worth of [*])

MELCO will pay the following amounts under the following terms and conditions as
mentioned in Item 3 of the Addendum-1.

     a.  Total Payment Amount: [*]
<PAGE>

     b.  Terms of payment:

              1st payment: [*] within [*] after the signing of this DA, MELCO's
                  receipt of UTStarcom development plan and its official
                  notification of authorized fund amount.

              2nd payment: [*] within [*] after the mutual confirmation of
                  successful [*] demonstration of RNC functionality with BTS on
                  the Iub interface.

              3rd payment: [*] within [*] after MELCO's receipt of a delivery
                  acceptance confirmation of a UTStarcom RNC by a customer in
                  accordance with a UTStarcom contract to be signed with a
                  customer for 3G W-CDMA including MELCO's BTS.

3.   MARKETING TERMS/CONDITIONS:

UTStarcom shall pay to MELCO [*] of RNC selling price [*] under the condition
that the sold 3G system will use a third party BTS.

                                      -2-

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