TURNSTONE SYSTEMS INC
S-1/A, 1999-12-22
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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<PAGE>   1


   As filed with the Securities and Exchange Commission on December 22, 1999



                                                      Registration No. 333-91427

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------


                                AMENDMENT NO. 1


                                       TO


                                    FORM S-1
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933

                            TURNSTONE SYSTEMS, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
                            ------------------------

<TABLE>
<S>                                <C>                                <C>
             DELAWARE                             3669                            77-047640
 (STATE OR OTHER JURISDICTION OF      (PRIMARY STANDARD INDUSTRIAL             (I.R.S. EMPLOYER
  INCORPORATION OR ORGANIZATION)      CLASSIFICATION CODE NUMBER)           IDENTIFICATION NUMBER)
</TABLE>

                               274 FERGUSON DRIVE
                        MOUNTAIN VIEW, CALIFORNIA 94043
                                 (650) 404-0200
  (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE, OF
                   REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)

                               RICHARD N. TINSLEY
                     PRESIDENT AND CHIEF EXECUTIVE OFFICER
                            TURNSTONE SYSTEMS, INC.
                               274 FERGUSON DRIVE
                        MOUNTAIN VIEW, CALIFORNIA 94043
                                 (650) 404-0200
 (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE,
                             OF AGENT FOR SERVICE)

                                   COPIES TO:

<TABLE>
<S>                                                 <C>
             THOMAS C. DEFILIPPS, ESQ.                              JOHN L. SAVVA, ESQ.
             ROBERT F. KORNEGAY, ESQ.                               ALBERT Y. LIU, ESQ.
              TED S. HOLLIFIELD, ESQ.                               JAMES OEHLER, ESQ.
               SANDRA PAK KNOX, ESQ.                                SULLIVAN & CROMWELL
         WILSON SONSINI GOODRICH & ROSATI                         1888 CENTURY PARK EAST
             PROFESSIONAL CORPORATION                          LOS ANGELES, CALIFORNIA 90067
                650 PAGE MILL ROAD                                    (310) 712-6600
                PALO ALTO, CA 94304
                  (650) 493-9300
</TABLE>

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

        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
As soon as practicable after the effective date of this Registration Statement.

    If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, check the following box.  [ ]

    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration number of the earlier effective
registration statement for the same offering.  [ ]

    If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]

    If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]

    If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.  [ ]

                        CALCULATION OF REGISTRATION FEE


<TABLE>
<S>                                <C>                                <C>
- -------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------
       TITLE OF EACH CLASS                 PROPOSED MAXIMUM                       AMOUNT OF
        OF SECURITIES TO                  AGGREGATE OFFERING                    REGISTRATION
          BE REGISTERED                        PRICE(1)                              FEE
- -------------------------------------------------------------------------------------------------------
Common Stock ($0.001 par value)..             $48,300,000                        $13,427(2)
- -------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------
</TABLE>


(1) Estimated solely for the purpose of computing the amount of the registration
    fee pursuant to Rule 457(o) under the Securities Act of 1933.

(2) Previously paid.

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

    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME EFFECTIVE ON
SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(a), MAY DETERMINE.

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2


                                EXPLANATORY NOTE



     This Amendment No. 1 to the Form S-1 Registration Statement is being filed
for the sole purpose of filing an additional exhibit.

<PAGE>   3

                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 13. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

     The following table sets forth the costs and expenses, other than
underwriting discounts and commissions, payable by Turnstone Systems in
connection with the sale of Common Stock being registered. All amounts are
estimates except the SEC registration fee and the NASD filing fee.

<TABLE>
<S>                                                           <C>
SEC registration fee........................................  $   13,427
NASD filing fee.............................................       5,330
Nasdaq National Market listing fee..........................      22,250
Printing and engraving costs................................     300,000
Legal fees and expenses.....................................     400,000
Accounting fees and expenses................................     400,000
Blue Sky fees and expenses..................................      20,000
Transfer Agent and Registrar fees...........................      10,000
Miscellaneous expenses......................................      28,993
                                                              ----------
          Total.............................................  $1,200,000
                                                              ==========
</TABLE>

ITEM 14. INDEMNIFICATION OF DIRECTORS AND OFFICERS

     Section 145 of the Delaware General Corporation Law permits a corporation
to include in its charter documents, and in agreements between the corporation
and its directors and officers, provisions expanding the scope of
indemnification beyond that specifically provided by the current law.

     Article XI of Turnstone Systems' Restated Certificate of Incorporation
provides for the indemnification of directors to the fullest extent permissible
under Delaware law.

     Article VI of Turnstone Systems' Bylaws provides for the indemnification of
officers, directors and third parties acting on behalf of Turnstone Systems if
such person acted in good faith and in a manner reasonably believed to be in and
not opposed to the best interest of Turnstone Systems, and, with respect to any
criminal action or proceeding, the indemnified party had no reason to believe
his or her conduct was unlawful.

     Turnstone Systems has entered into indemnification agreements with its
directors and executive officers, in addition to indemnification provided for in
Turnstone Systems' Bylaws, and intends to enter into indemnification agreements
with any new directors and executive officers in the future.

ITEM 15. RECENT SALES OF UNREGISTERED SECURITIES

     Since our incorporation in January 1998, we have issued unregistered
securities to a limited number of persons as described below.

     None of these transactions involved any underwriters, underwriting
discounts or commissions, or any public offering, and we believe that each
transaction was exempt from the registration requirements of the Securities Act
by virtue of Section 4(2) thereof, Regulation D promulgated thereunder or Rule
701 pursuant to compensatory benefit plans and contracts relating to
compensation as provided under such Rule 701. The recipients of securities in
each such transaction represented their intention to acquire the securities for
investment only and not with a view to or for sale in connection with any
distribution thereof, and appropriate legends were affixed to the share
certificates and instruments issued in such transactions. All recipients had
adequate access, through their relationships with Turnstone Systems, to
information about Turnstone Systems.

                                      II-1
<PAGE>   4

     1. In January 1998, we issued and sold 8,475,500 shares of common stock to
        founders at a purchase price per share of $0.001.

     2. Pursuant to our 1998 Stock Plan, from inception to September 30, 1999 we
        issued and sold an aggregate of 2,844,224 shares of common stock to
        certain employees, officers, directors and consultants.

     3. On January 12, 1998 and February 27, 1998, we issued and sold a total of
        11,680,000 shares of Series A Preferred Stock to a total of 13 investors
        for an aggregate purchase price of $5,840,000.

     4. On June 1, 1998, in connection with a credit facility, we issued to one
        party a warrant to purchase 45,000 shares of our Series A Preferred
        Stock for an aggregate exercise price of $22,500.

     5. One July 29, 1998, in connection with certain equipment leases, we
        issued to one party a warrant to purchase 90,000 shares of our Series A
        Preferred Stock for an aggregate exercise price of $45,000.

     6. On January 12, 1999 and June 21, 1999, we issued and sold a total of
        3,176,930 shares of Series B Preferred Stock to a total of 12 investors
        for an aggregate purchase price of $6,195,013.50.

ITEM 16. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) EXHIBITS


<TABLE>
<CAPTION>
EXHIBIT
 NUMBER                     DESCRIPTION OF DOCUMENT
- -------                     -----------------------
<S>       <C>
 1.1*     Form of Underwriting Agreement
 3.1A*    Certificate of Incorporation of Turnstone Systems currently
          in effect
 3.1B*    Certificate of Incorporation of Turnstone Systems to be in
          effect after the closing of the offering made under this
          Registration Statement
 3.2A*    Bylaws of Turnstone Systems currently in effect
 3.2B*    Bylaws of Turnstone Systems to be in effect after the
          closing of the offering made under this Registration
          Statement
 4.1**    Form of Common Stock certificate
 4.2*     Registration Rights Agreement, dated January 12, 1998 by and
          among Turnstone Systems and certain stockholders of
          Turnstone Systems named therein, as amended as of January
          12, 1999
 4.3*     Warrant to purchase shares of Series A Preferred Stock of
          Turnstone Systems issued to Silicon Valley Bank
 4.4*     Form of Founder's Restricted Stock Purchase Agreement
          entered into as of January 2, 1998 between Turnstone Systems
          and each of P. Kingston Duffie, M. Denise Savoie and Richard
          N. Tinsley
 5.1**    Opinion of Wilson Sonsini Goodrich & Rosati, Professional
          Corporation
10.1*     Form of Indemnification Agreement entered into by Turnstone
          Systems with each of its directors and executive officers
10.2*     1998 Stock Plan and forms of agreement thereunder
10.3*     2000 Stock Plan and forms of agreement thereunder
10.4*     2000 Employee Stock Purchase Plan and forms of agreement
          thereunder
10.5+*    Manufacturing Agreement dated as of October 16, 1998,
          between Turnstone Systems and A-Plus Manufacturing
          Corporation
10.6+***  OEM Purchase Agreement, dated effective as of September 1,
          1999, between Turnstone Systems and Lucent Technologies
          Inc., as amended as of September 28, 1999
10.7*     Sublease dated June 16, 1999, between Turnstone Systems and
          Finisar Corporation
</TABLE>


                                      II-2
<PAGE>   5


<TABLE>
<CAPTION>
EXHIBIT
 NUMBER                     DESCRIPTION OF DOCUMENT
- -------                     -----------------------
<S>       <C>
23.1*     Consent of KPMG LLP, independent auditors
23.2**    Consent of Counsel (included in Exhibit 5.1)
24.1*     Power of Attorney (see page II-4)
27.1*     Financial Data Schedule
</TABLE>


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

*   Previously filed.



**  To be filed by amendment.



*** Filed herewith.



+   Confidential treatment requested.


(b) FINANCIAL STATEMENT SCHEDULES

     Schedules not listed above have been omitted because the information
required to be set forth therein is not applicable or is shown in the financial
statements or notes thereto.

ITEM 17. UNDERTAKINGS

     Turnstone Systems hereby undertakes to provide to the underwriters at the
closing specified in the underwriting agreement certificates in such
denominations and registered in such names as required by the underwriters to
permit prompt delivery to each purchaser.

     Insofar as indemnification by Turnstone Systems for liabilities arising
under the Securities Act may be permitted to directors, officers and controlling
persons of Turnstone Systems pursuant to the provisions referenced in Item 14 of
this registration statement or otherwise, Turnstone Systems has been advised
that in the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the Securities Act, and
is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by Turnstone Systems of
expenses incurred or paid by a director, officer, or controlling person of
Turnstone Systems in the successful defense of any action, suit or proceeding)
is asserted by a director, officer or controlling person in connection with the
securities being registered hereunder, Turnstone Systems will, unless in the
opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities
Act and will be governed by the final adjudication of such issue.

     Turnstone Systems hereby undertakes that:

          (1) For purposes of determining any liability under the Securities
     Act, the information omitted from the form of prospectus filed as part of
     this registration statement in reliance upon Rule 430A and contained in a
     form of prospectus filed by Turnstone Systems pursuant to Rule 424(b)(1) or
     (4) or 497(h) under the Securities Act shall be deemed to be part of this
     registration statement as of the time it was declared effective.

          (2) For the purpose of determining any liability under the Securities
     Act, each post-effective amendment that contains a form of prospectus shall
     be deemed to be a new registration statement relating to the securities
     offered therein, and the offering of such securities at that time shall be
     deemed to be the initial bona fide offering thereof.

                                      II-3
<PAGE>   6

                                   SIGNATURES


     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Amendment No. 1 to the Registration Statement to be signed
on its behalf by the undersigned, thereunto duly authorized, in the city of
Mountain View, State of California, on the 22nd day of December, 1999.


                                          TURNSTONE SYSTEMS, INC.

                                          By:    /s/ RICHARD N. TINSLEY
                                            ------------------------------------
                                                     Richard N. Tinsley
                                               President and Chief Executive
                                                           Officer


     Pursuant to the requirements of the Securities Act of 1933, this Amendment
No. 1 to the Registration Statement has been signed by the following persons in
the capacities and on the dates indicated:



<TABLE>
<CAPTION>
                      SIGNATURE                                   TITLE                   DATE
                      ---------                                   -----                   ----

<C>                                                    <S>                          <C>
               /s/ RICHARD N. TINSLEY                  President, Chief Executive   December 22, 1999
- -----------------------------------------------------  Officer and Director
                 Richard N. Tinsley                    (Principal Executive
                                                       Officer)

                 *P. KINGSTON DUFFIE                   Chief Technology Officer     December 22, 1999
- -----------------------------------------------------  and Director
                 P. Kingston Duffie

                /s/ M. DENISE SAVOIE                   Chief Financial Officer and  December 22, 1999
- -----------------------------------------------------  Vice President, Business
                  M. Denise Savoie                     Operations (Principal
                                                       Financial and Accounting
                                                       Officer)

              *ROBERT J. FINOCCHIO, JR.                Director                     December 22, 1999
- -----------------------------------------------------
              Robert J. Finocchio, Jr.

                   *JOHN K. PETERS                     Director                     December 22, 1999
- -----------------------------------------------------
                   John K. Peters

                 *ANDREW W. VERHALEN                   Director                     December 22, 1999
- -----------------------------------------------------
                 Andrew W. Verhalen

                  *GEOFFREY Y. YANG                    Director                     December 22, 1999
- -----------------------------------------------------
                  Geoffrey Y. Yang

             *By: /s/ RICHARD N. TINSLEY
  ------------------------------------------------
                  Attorney-in-Fact
</TABLE>


                                      II-4
<PAGE>   7

                               INDEX TO EXHIBITS


<TABLE>
<CAPTION>
EXHIBIT
 NUMBER                      DESCRIPTION OF DOCUMENT
- -------                      -----------------------
<S>        <C>
 1.1*      Form of Underwriting Agreement
 3.1A*     Certificate of Incorporation of Turnstone Systems currently
           in effect
 3.1B*     Certificate of Incorporation of Turnstone Systems to be in
           effect after the closing of the offering made under this
           Registration Statement
 3.2A*     Bylaws of Turnstone Systems currently in effect
 3.2B*     Bylaws of Turnstone Systems to be in effect after the
           closing of the offering made under this Registration
           Statement
 4.1**     Form of Common Stock certificate
 4.2*      Registration Rights Agreement, dated January 12, 1998 by and
           among Turnstone Systems and certain stockholders of
           Turnstone Systems named therein, as amended as of January
           12, 1999
 4.3*      Warrant to purchase shares of Series A Preferred Stock of
           Turnstone Systems issued to Silicon Valley Bank
 4.4*      Form of Founder's Restricted Stock Purchase Agreement
           entered into as of January 2, 1998 between Turnstone Systems
           and each of P. Kingston Duffie, M. Denise Savoie and Richard
           N. Tinsley
 5.1**     Opinion of Wilson Sonsini Goodrich & Rosati, Professional
           Corporation
10.1*      Form of Indemnification Agreement entered into by Turnstone
           Systems with each of its directors and executive officers
10.2*      1998 Stock Plan and forms of agreement thereunder
10.3*      2000 Stock Plan and forms of agreement thereunder
10.4*      2000 Employee Stock Purchase Plan and forms of agreement
           thereunder
10.5+*     Manufacturing Agreement dated as of October 16, 1998,
           between Turnstone Systems and A-Plus Manufacturing
           Corporation
10.6+***   OEM Purchase Agreement, dated effective as of September 1,
           1999, between Turnstone Systems and Lucent Technologies
           Inc., as amended as of September 28, 1999
10.7*      Sublease dated June 16, 1999, between Turnstone Systems and
           Finisar Corporation
23.1*      Consent of KPMG, LLP, independent auditors
23.2**     Consent of Counsel (included in Exhibit 5.1)
24.1*      Power of Attorney (see page II-4)
27.1*      Financial Data Schedule
</TABLE>


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

*   Previously filed.



**  To be filed by amendment.



*** Filed herewith.



+   Confidential treatment requested.


<PAGE>   1
                                                                    EXHIBIT 10.6


                            LUCENT TECHNOLOGIES INC.
              STANDARD OEM PURCHASE AGREEMENT TERMS AND CONDITIONS
                 (Amended and Restated as of December 9, 1999)



                                                       Agreement No. SC11990085
                                                       Sheet 1 of 31



Turnstone Systems, Inc.
274 Ferguson Drive
Mountain View, CA 94043

This Agreement is made by and between Lucent Technologies Inc. ("Company")
having an office at 188 Mt Airy Road, Basking Ridge, NJ 07920 and Turnstone
Systems, Inc.("Supplier") having an office at 274 Ferguson Drive, Mountain View,
CA 94043 (hereinafter individually a "Party" and collectively the "Parties").
Company agrees to purchase and Supplier agrees to sell in accordance with the
terms and conditions stated in this Agreement and any attachments to this
Agreement.

WHEREAS, Company wishes to purchase MATERIALs of Supplier's (design and)
manufacture for resale to Company's customers, and

WHEREAS, Supplier desires to sell such materials to Company for resale to
Company's customers,

THEREFORE, the parties agree as follows

1.       AGREEMENT EFFECTIVE PERIOD
                  The term of this Agreement shall commence on, September 1,
         1999, and shall, except as otherwise provided in this Agreement,
         continue in effect thereafter until August 31, 2002.

2.       MATERIAL
                  "MATERIAL" as used in this Agreement shall mean Supplier's
         COPPER CROSSCONNECT Products as listed in APPENDIX A, attached and made
         a part of this Agreement. Such MATERIAL is hereby offered for sale by
         Supplier and may be purchased by Company in accordance with the terms,
         conditions and specifications stated in this Agreement. This Agreement
         is a non-commitment agreement and MATERIAL shall be furnished by
         Supplier on an as-ordered basis. "Specification(s)" as used in this
         Agreement shall mean all of the specifications made part of this
         Agreement.

<PAGE>   2

                                                                   Sheet 2 of 31

3.       OPTION TO EXTEND
                  Company shall have the right to extend the period specified in
         the section "AGREEMENT EFFECTIVE PERIOD" for up to twelve (12) months
         by giving Supplier at least thirty (30) business days prior written
         notice.

                  Within ten (10) business days of the date of Company's notice
         to extend the period, Supplier shall notify Company in writing whether
         Supplier proposes to revise the price(s) under this Agreement. If the
         parties fail to agree on the revised price(s) within twenty (20)
         business days after the date of Supplier's notice, Company's notice of
         extension shall be considered withdrawn and prices for outstanding
         orders or orders placed during the term of this Agreement shall not be
         revised.

4.       PRICE AND DISCOUNTS
                  Prices and discounts shall be based on cumulative purchase
         volume as shown in APPENDIX A. Prices and discounts as listed in
         APPENDIX A shall remain in effect during the term of this Agreement.

5.       COST REDUCTION
                  Both parties shall endeavor to reduce the costs of MATERIALs
         furnished under this Agreement. If design, labor or material cost
         reductions result from Company initiated changes or the sharing by
         Supplier of other Company supplier agreements, [***] percent ([***]%)
         of the cost reduction(s) shall be passed onto Company in the form of
         reduced prices, except that if the cost reduction results from Supplier
         initiated changes, Supplier shall furnish to Company a complete list of
         expenses that Supplier incurred in effecting said cost reduction, if
         any. Supplier shall be entitled to receive the benefits of the cost
         reduction for the time period required to recover its implementation
         expenses.

6.       TERMS OF PAYMENT
                  Net thirty (30) business days from the date of shipment of the
         MATERIAL to Company.

7.       FORECASTS
                  Company shall provide Supplier with a twelve (12) month
         non-binding forecast submitted to Supplier by the fifth (5th) business
         day of each calendar month. Such forecast shall be used by Supplier for
         planning purposes only and shall not be deemed a commitment by Company
         to purchase the MATERIAL shown in the forecast.

8.       FOB
                  The MATERIAL shall be shipped FOB Supplier's location (or such
         other Supplier's location as may be designated by Supplier). Company
         shall select the carrier(s) and provide the name(s) of the carrier(s)
         and Company's account number(s) with said carriers to Supplier within
         thirty (30) days of execution of this Agreement.


- ------
***Certain information on this page has been omitted and filed
   separately with the Commission. Confidential treatment has
   been requested with respect to the omitted portions.
<PAGE>   3

                                                                   Sheet 3 of 31

9.       FREIGHT CLASSIFICATION
                  MATERIAL purchased under this Agreement shall be shipped to
         Company or Company's customers subject to freight charges appropriate
         for goods classified as Data Communication Products. Supplier shall
         indicate on the bill of lading that Company's contract rates apply.

10.      NON-EXCLUSIVE MARKET RIGHTS
                  This Agreement neither grants to Supplier an exclusive right
         or privilege to sell to Company any or all MATERIALs of the type
         described in the MATERIAL section which Company may require, nor
         requires the purchase of any MATERIAL or other MATERIALs from Supplier
         by Company. Therefore, Company may contract with other manufacturers
         and suppliers for the procurement of comparable MATERIALs. In addition,
         Company shall, at its sole discretion, decide the extent to which
         Company will market advertise, promote, support or otherwise assist in
         further offerings of the MATERIAL.

                  Purchases by Company under this Agreement shall neither
         restrict the right of Company to cease purchasing nor require Company
         to continue any level of such purchases.

11.      SPECIFICATIONS OR DRAWINGS
                  Supplier's standard commercial specifications are set forth in
         the Turnstone Copper CrossConnect CX-100 User's Guide, Revision 1.1, as
         amended from time to time in accordance with the procedures set forth
         herein. Supplier shall manufacture MATERIAL in accordance with
         Specifications, so that MATERIAL conforms to such Specifications.

                  In accordance with the notification requirements outlined in
         Section "MATERIAL CHANGES," Supplier shall provide Company with at
         least thirty (30) business days prior written notice of any change to
         be made by Supplier in the MATERIAL furnished pursuant to said
         Specifications under this Agreement.

                  If Company, in its sole discretion, does not agree to the
         change proposed by Supplier, Company may submit a Modification Request
         to address the change. If the Company's Modification Request is not an
         acceptable solution, then in addition to all other rights and remedies
         at law or equity or otherwise, and without any cost to or liability or
         obligation of Company, Company shall have the right to terminate this
         Agreement and to terminate any or all purchase orders for MATERIAL
         affected by such change.

                  Supplier shall continue to supply MATERIAL to Company pursuant
         to the Specifications for the term of the Agreement. If Supplier is
         unable to continue to thus supply or discontinues manufacture of
         MATERIAL, Company shall be entitled to one (1) year's advance notice,
         provided (i) the discontinuance is at Supplier's election and (ii)
         there has been a reasonable amount of purchases during the period
         preceding Supplier's notice of discontinuance. Additionally, and if
         requested by Company, Company and Supplier shall endeavor to develop an
         alternative method of provisioning MATERIAL or


<PAGE>   4

                                                                   Sheet 4 of 31

         Parts, which may include licensing Manufacturing Rights to
         Company, subject to mutual agreement between Company and
         Supplier.

12.      ASSIGNMENT BY SUPPLIER
                  Supplier shall not assign any right or interest under this
         Agreement (excepting solely for moneys due or to become due) without
         the prior written consent of Company, provided however, no such consent
         shall be required in connection with the sale of all or substantially
         all of the assets of Supplier related to MATERIAL or in connection with
         any merger, reorganization or sale of Supplier. Supplier shall be
         responsible to Company for all Work performed by Supplier's
         subcontractor(s) at any tier. In the event of an assignment by
         Supplier, Company may terminate this Agreement or an order, in whole or
         in part, by written notice to Supplier. In such case, Company's
         liability shall be limited to payment of the amount due for work
         performed and/or MATERIAL provided by Supplier up to and including date
         of termination.

13.        ASSIGNMENT BY COMPANY
         Company shall have the right to assign this Agreement or an order and
         to assign its rights and delegate its duties under this Agreement or an
         order either in whole or in part at any time and without Supplier's
         consent to (i) any present or future associated entity of Company; (ii)
         the, successors and assigns of Company or its present or future
         associated entities; or (iii) any other entity resulting from the sale,
         reorganization or other transfer of all or part of the assets of
         Company or any associated entity. Company shall give Supplier written
         notice of any assignment and delegation. The assignment and delegation
         shall not affect any rights or duties that Supplier or Company may then
         or thereafter have as to equipment, software, services or materials
         ordered by Company prior to the effective date of the assignment and
         delegation. Upon acceptance of the assignment and delegation and
         assumption of the duties under this Agreement or an order, Company
         shall be released and discharged, to the extent of the assignment and
         delegation, from all further duties under this Agreement or the order
         as to equipment, software, services or materials so assigned.

14.      BANKRUPTCY AND TERMINATION FOR FINANCIAL INSECURITY
         Either party may terminate this Agreement by notice in writing:

                  (i) if the other party makes an assignment for the benefit of
                      creditors (other than solely an assignment of monies due);
                      or:

                  (ii)if the other party evidences an inability to pay debts as
                      they become due, unless adequate assurance of such ability
                      to pay is provided within thirty (30) days of such notice.

                  If a proceeding is commenced under any provision of the United
         States Bankruptcy Code, voluntary or involuntary, by or against either
         party, and this Agreement has not been terminated, the non-debtor party
         may file a request with the bankruptcy court to have the court set a
         date within sixty (60) days after the commencement of the case, by
<PAGE>   5

                                                                   Sheet 5 of 31

         which the debtor party will assume or reject this Agreement, and the
         debtor party shall cooperate and take whatever steps necessary to
         assume or reject the Agreement by such date.

15.      CFC PACKAGING
                  Supplier warrants that all packaging materials furnished under
         this Agreement and all packaging associated with MATERIAL furnished
         under this Agreement were not manufactured using and do not contain
         chlorofluorocarbons. "Packaging" means all bags, wrapping, boxes,
         cartons and any other packing materials used for packaging. Supplier
         shall indemnify and hold Company harmless for any liability, fine or
         penalty incurred by Company to any third party or governmental agency
         arising out of Company's good faith reliance upon said warranty.

16.      CHOICE OF LAW
                  This Agreement and all transactions under it shall be governed
         by the laws of the State of New Jersey excluding its choice of laws
         rules and excluding the Convention for the International Sale of Goods.
         Supplier agrees to submit to the jurisdiction of any court wherein an
         action is commenced against Company based on a claim for which Supplier
         has agreed to indemnify Company under this Agreement.

17.      COMPLIANCE WITH LAWS
                  Each Party and all persons furnished by each Party shall
         comply at their own expense with all applicable laws, ordinances,
         regulations and codes, including the identification and procurement of
         required permits, certificates, licenses, insurance, approvals and
         inspections in performance under this Agreement.

18.      CONTINUING AVAILABILITY
                  Supplier shall offer for sale to Company, during the term of
         this Agreement MATERIAL conforming to the Specifications set forth in
         this Agreement. Supplier further shall offer for sale to Company,
         during the term of this Agreement and until [***] ([***]) years after
         the expiration of this Agreement, maintenance, replacement, and repair
         parts ("Parts") which are functionally equivalent and identical in form
         and fit for the MATERIAL covered by this Agreement. The price for the
         MATERIAL and Parts shall be the price set forth in Supplier's then
         current agreement with Company for said MATERIAL or Parts or, if no
         such agreement exists, at a price agreed upon by Company and Supplier.
         If the parties fail to agree on a price, the price shall be a
         reasonably competitive price for said MATERIAL or Parts at the time for
         delivery. The MATERIAL and Parts shall be warranted as set forth in the
         "WARRANTY" section of this Agreement. The term "Parts" is included in
         the term "MATERIAL."

                  In the event Supplier fails to supply such MATERIAL or Parts
         and Supplier is unable to obtain another source of supply for Company,
         then Company and Supplier shall endeavor to develop an alternative
         method of provisioning MATERIAL or Parts, which may include
         manufacturing rights to Company. At that time, both parties shall
         mutually

- ------
***Certain information on this page has been omitted and filed
   separately with the Commission. Confidential treatment has
   been requested with respect to the omitted portions.
<PAGE>   6

                                                                   Sheet 6 of 31

         determine necessary measures required for Company to obtain MATERIAL
         under this license.

19.      DEFAULT
                  If either party shall be in breach or default of any of the
         terms, conditions or covenants of this Agreement or of any purchase
         order, and if such breach or default shall continue for a period of ten
         (10) days after the giving of written notice to the party in breach
         thereof by the party not in breach, then, in addition to all other
         rights and remedies which the party not in breach may have at law or
         equity or otherwise, the party not in breach shall have the right to
         cancel this Agreement and/or any purchase orders without any charge to
         or obligation or liability of the party not in breach.

20.      ELECTRONIC DATA INTERCHANGE
                  If requested by Company, Supplier shall use commercially
         reasonable efforts to implement EDI at Supplier's sole expense.

21.      EPIDEMIC CONDITION
                  If during the term of this Agreement and for six (6) months
         after the last shipment date of MATERIAL under this Agreement Company
         notifies Supplier that an "Epidemic Condition" has occurred, Supplier
         shall prepare and propose a Corrective Action Plan ("CAP") with respect
         to such MATERIAL within five (5) working days of such notification,
         addressing implementation and procedure milestones for remedying such
         Epidemic Condition(s). An extension of this time-frame is permissible
         upon mutual written agreement of the parties.

                  Upon notification of the Epidemic Condition to Supplier,
         Company shall have the right to postpone all or part of the shipments
         of unshipped MATERIAL, by giving written notice of such postponement to
         Supplier, pending correction of the Epidemic Condition. Such
         postponement shall temporarily relieve Supplier of its shipment
         liability and Company of its shipment acceptance liability. Should
         Supplier not agree to the existence of an Epidemic Condition or should
         Company not agree to the CAP, then Company shall have the right to
         suspend all or part of its unshipped orders without liability to
         Company until such time as a mutually acceptable solution is reached.

                  An Epidemic Condition will be considered to exist when one or
         more of the following conditions occur:

                  (1) Failure reports or statistical samplings show that
         MATERIAL shipped contain a potential safety hazard (such as personal
         injury or death, fire, explosion, toxic emissions, etc.), or exhibit a
         highly objectionable symptom (such as emissions of smoke, loud noises,
         deformation of housing) or other disconcerting symptoms of this type.

                   (2) Reliability plots of relevant data indicate that the
         MATERIAL has actual Mean Time Between Failures (MTBF) of less than 80%
         of the MTBF stipulated in the Technical Specifications provided by
         Supplier. The MTBF parameter of MATERIAL is

<PAGE>   7

                                                                   Sheet 7 of 31

         defined as the total operating or power-on time of any population
         under observation ("T"), in hours, divided by the total number of
         critical failures ("n") that have occurred during the observed period.
         A critical failure is defined as a failure to operate per the
         requirements of the Technical Specification. The total operating
         time of a population is the summation of operating time of
         individual units in that population. MTBF is expressed as MTBF =
         T/n. An Epidemic Condition shall exist when data derived from
         populations being tracked confirms the condition with 80%
         confidence.

                   (3) MATERIAL Dead on Arrival (DOA) failures exceed the
         Epidemic DOA failure rate which is defined as 1.2 x DOA specified in
         the section of this Agreement entitled MATERIAL CONFORMANCE REVIEW.

                  Only major functional and visual/mechanical/appearance defects
         are considered for determining Epidemic Condition. MATERIAL could be
         either sampled or, a Company's option, 100% audited at Company
         warehouses, factories or Company's customers' locations. If MATERIAL is
         sampled, the data must have 80% or better statistical confidence.

                  For the purpose of this Agreement, functional DOA shall be
         defined as any MATERIAL that during the test, installation or upon its
         first use fails to operate as expected or specified.
         Visual/mechanical/appearance DOA is defined as any MATERIAL containing
         one or more major defects that would make the MATERIAL unfit for use or
         installation.

                  An Epidemic Condition shall not include failures due to
         customer misapplication, utilization of parts not approved by Supplier,
         or chain failures induced by internally or externally integrated
         subassemblies.

                  In the event that Supplier develops a remedy for the defect(s)
         that caused the Epidemic Condition and Company agrees in writing that
         the remedy is acceptable Supplier shall:

         (a) Incorporate the remedy in the affected MATERIAL in accordance with
         CAP.

         (b) Ship all subsequent MATERIAL incorporating the required
         modification correcting the defect(s) at no additional charge to
         Company; and

         (c) Repair and/or replace MATERIAL that caused the Epidemic Condition.
         In the event that Company incurs costs due to such repair and/or
         replacement, including but not limited to labor and shipping costs,
         Supplier shall reimburse Company for such costs. Supplier shall bear
         risk of in transit loss and damage for such repaired and/or replaced
         MATERIAL.

                  Supplier and Company shall mutually agree in writing as to the
         remedy's implementation schedule. Supplier shall use its best efforts
         to implement the remedy in accordance with the agreed-upon schedule.
<PAGE>   8
                                                                   Sheet 8 of 31

                  If Supplier is unable to develop a mutually agreeable remedy,
         or does not adequately take into account the business interests of
         Company, as reasonably agreed by the parties, Company may (1) develop
         and implement such remedy and, in such case, implementation costs and
         risk of in- transit loss and damage shall be allocated between the
         parties as set forth in this section, and/or (2) cancel postponed
         orders without liability and return all MATERIAL affected by such
         Epidemic Condition for full refund, payable by Supplier within thirty
         (30) business days after receipt of returned MATERIAL (with risk of
         loss or in-transit damage borne by Supplier) and/or (3) terminate this
         Agreement without further liability.

22.      EXPORT CONTROL
                  Supplier will not use, distribute, transfer or transmit any
         MATERIALs, software or technical information (even if incorporated into
         other MATERIALs) provided under this Agreement except in compliance
         with U.S. export laws and regulations (the "Export Laws"). Supplier
         will not, directly or indirectly, export or re-export the following
         items to any country which is in the then current list of prohibited
         countries specified in the applicable Export Laws:(a) software or
         technical data disclosed or provided to Supplier by Company or
         Company's subsidiaries or affiliates; or (b) the direct MATERIAL of
         such software or technical data. Supplier agrees to promptly inform
         Company in writing of any written authorization issued by the U.S.
         Department of Commerce office of export licensing to export or
         re-export any such items referenced in (a) or (b). The obligations
         stated above in this clause will survive the expiration, cancellation
         or termination of this Agreement or any other related agreement.

23.      FORCE MAJEURE
                  Neither party shall be held responsible for any delay or
         failure in performance of any part of this Agreement to the extent such
         delay or failure is caused by fire, flood, strike, civil, governmental,
         or military authority, act of God, or other similar causes beyond its
         control and without the fault or negligence of the delayed or non
         performing party or its subcontractors. Supplier's liability for loss
         or damage to Company's MATERIAL in Supplier's possession or control
         shall not be modified by this section. When a party's delay or
         nonperformance continues for a period of at least fifteen (15) days,
         the other party may terminate, at no charge, this Agreement or an order
         under the Agreement.

24.      GOVERNMENT CONTRACT PROVISIONS
                  The following provisions regarding equal opportunity, and all
         applicable laws, rules, regulations and executive orders specifically
         related thereto, including applicable provisions and sections from the
         Federal Acquisition Regulation and all supplements thereto are
         incorporated in this Agreement as they apply to work performed under
         specific U.S. Government contracts: 41 CFR 60-1.4, Equal Opportunity;
         41 CFR 60-1.7, Reports and Other Required Information; 41 CFR 60-1.8,
         Segregated Facilities; 41 CFR 60-250.4, Affirmative Action For Disabled
         Veterans and Veterans of the Vietnam Era (if in excess of $10,000); and
         41 CFR 60-741.4, Affirmative Action for Disabled Workers (if in excess
         of

<PAGE>   9
                                                                   Sheet 9 of 31

         $2,500), wherein the terms "contractor" and "subcontractor" shall
         mean "Supplier". In addition, orders placed under this Agreement
         containing a notation that the material or services are intended for
         use under Government contracts shall be subject to such other
         Government provisions printed, typed or written thereon, or on the
         reverse side thereof, or in attachments thereto.

25.      HEAVY METALS IN PACKAGING
                  Supplier warrants to Company that no lead, cadmium, mercury or
         hexavalent chromium have been intentionally added to any packaging or
         packaging component (as defined under applicable laws) to be provided
         to Company under this Agreement and that packaging materials were not
         manufactured using and do not contain chlorofluorocarbons. Supplier
         further warrants to Company that the sum of the concentration levels of
         lead, cadmium, mercury and hexavalent chromium in the package or
         packaging component provided to Company under this Agreement does not
         exceed 100 parts per million. Upon request, Supplier shall provide to
         Company Certificates of Compliance certifying that the packaging and/or
         packaging components provided under this Agreement are in compliance
         with the requirements set forth above in this section.

26.      IDENTIFICATION
                  Supplier shall not, without Company's prior written consent,
         engage in publicity related to this Agreement, or make public use of
         any Identification in any circumstances related to this Agreement.
         Notwithstanding the foregoing, Company and Supplier agree to issue a
         mutually acceptable press release regarding this Agreement as soon as
         reasonably possible following execution of this Agreement. Company
         consents to Supplier's disclosure only of information relating to this
         Agreement as may be required by federal and state securities laws and
         regulations. Supplier agrees that the specific terms and conditions of
         this Agreement shall not be disclosed, and shall be held confidential.
         "Identification" means any semblance of any trade name, trademark,
         service mark, insignia, symbol, logo, or any other designation, or
         drawing of Company or its affiliates. Supplier shall remove or
         obliterate any Identification prior to any use or disposition of any
         MATERIAL rejected or not purchased by Company.

27.      IMPLEADER
                  Supplier shall not implead or bring an action against Company
         based on any claim by any person for personal injury or death to an
         employee of Company for which Company has previously paid or is
         obligated to pay worker's compensation benefits to such employee or
         claimant and for which such employee or claimant could not otherwise
         bring legal action against Company.

28.      INDEMNITY
         28. At Company's request, Supplier agrees to indemnify, defend and hold
         harmless Company, its affiliates, employees, successors and assigns
         (all referred to as "Company") from and against any losses, damages,
         claims, fines, penalties and expenses (including reasonable attorney's
         fees) that arise out of or result from: (i) injuries or death to
         persons or damage to property, including theft, in any way arising out
         of or caused or alleged to
<PAGE>   10
                                                                  Sheet 10 of 31

         have been caused by the services performed by, or MATERIAL
         provided by Supplier; or

         (ii) any failure of Supplier to perform its obligations under this
         Agreement. Notwithstanding the foregoing, Supplier's duty of
         indemnification pursuant to this article does not arise for loss or
         injury caused by:

         (i) gross negligence, misuse, abuse of, or accident to the MATERIAL;

         (ii) gross negligence by a person other than Supplier or under
         Supplier's authority;

         (iii) improper or inadequate operation, maintenance, or repair by a
         person other than Supplier or under Supplier's authority not in
         accordance with this Agreement; (iv) modification to MATERIAL by
         Company or a third party in a manner not authorized in writing by
         Supplier and not in accordance with this Agreement.

         Supplier's obligations pursuant to this article are further subject to
         the conditions that Company:

         (i)   gives Supplier timely notice of any claim or threatened or
         actual suit or action;

         (ii) gives Supplier sole control of the defense and settlement of such
         action, claim or suit and related settlement negotiations; provided
         that Supplier may not make any admission of liability on the Company's
         behalf, without Company's prior written consent and further provided
         that such control shall continue only for so long as Supplier is
         defending such claim, suit or action in good faith; and

         (iii) reasonably cooperates in the defense and settlement of such
         claim, suit or action at Supplier's sole expense.

29.      LIMITATION OF LIABILITY
                  NEITHER PARTY WILL BE LIABLE TO THE OTHER FOR LOST PROFITS,
         CONSEQUENTIAL, INDIRECT, INCIDENTAL, SPECIAL OR PUNITIVE DAMAGES EVEN
         IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

                  These limitations of liability shall not apply to the Parties
         obligations under the clauses INFRINGEMENT, USE OF INFORMATION or
         SUPPLIER'S INFORMATION or to any liability arising from or related to
         any personal injury (including death) or damage to tangible property
         caused by a Party in fulfilling its obligations hereunder.

30.      INFRINGEMENT
                  Supplier shall indemnify and save harmless Company, its
         affiliates and their customers, officers, directors, employees (all
         referred to in this section as "Company") from and against any losses,
         damages, liabilities, fines, penalties, and expenses (including
         reasonable attorneys' fees) that arise out of or result from any and
         all claims (i) of infringement of any patent, copyright, trademark or
         trade secret right, or other intellectual property right, private
         right, or any other proprietary or personal interest, and (ii) related
         to the subject matter of this Agreement or performance under or in
         contemplation of it (an Infringement Claim). If the Infringement Claim
         arises solely from Supplier's adherence to Company's written
         instructions regarding services or tangible or intangible goods
         provided


<PAGE>   11
                                                                  Sheet 11 of 31

         by Supplier (Items) and if the Items are not (i) commercial
         items available on the open market or the same as such items, or (ii)
         items of Supplier's designated origin, design or selection, Company
         shall indemnify Supplier. Company or Supplier (at Company's request)
         shall defend or settle, at its own expense any demand, action or suit
         on any Infringement Claim for which it is indemnitor under the
         preceding provisions and each shall timely notify the other of any
         assertion against it or any Infringement Claim and shall cooperate in
         good faith with the other to facilitate the defense of any such Claim.

31.      INSIGNIA
                  Upon Company's written request, "Insignia", including certain
         trademarks, trade names, insignia, symbols, decorative designs or
         packaging designs of Company, or evidences of Company's inspection will
         be properly affixed by Supplier to the MATERIAL furnished or its
         packaging. Such Insignia will not be affixed, used or otherwise
         displayed on the MATERIAL furnished or in connection therewith without
         written approval by Company. The manner in which such Insignia will be
         affixed must be approved in writing by Company in accordance with
         standards established by Company. Company shall retain all right, title
         and interest in any and all packaging designs, finished artwork and
         separations furnished to Supplier. This section does not reduce or
         modify Supplier's obligations under the "IDENTIFICATION" and "USE OF
         INFORMATION" section.

32.      INSURANCE
                  Supplier shall maintain and cause Supplier's subcontractors to
         maintain during the term of this Agreement: (i) Workers' Compensation
         insurance as prescribed by the law of the state or nation in which the
         Work is performed; (ii) employer's liability insurance with limits of
         at least $500,000 for each occurrence; (iii) automobile liability
         insurance if the use of motor vehicles is required, with limits of at
         least $1,000,000 combined single limit for bodily injury and property
         damage for each occurrence; (iv).Commercial General Liability ("CGL")
         insurance, ISO 1988 or later occurrence form of insurance including
         Blanket Contractual Liability and Broad Form Property Damage, with
         limits of at least $1,000,000 combined single limit for bodily injury
         and property damage for each occurrence; and (v) if the furnishing to
         Company (by sale or otherwise) of MATERIALs or material is involved,
         CGL insurance endorsed to include MATERIALs liability and completed
         operations coverage in the amount of $2,000,000 per occurrence. All CGL
         and automobile liability insurance shall designate Company, its
         affiliates, and its directors, officers and employees (all referred to
         as "Company") as additional insured. All such insurance must be primary
         and non-contributory and required to respond and pay prior to any other
         insurance or self-insurance available. Any other coverage available to
         Company shall apply on an excess basis. Supplier agrees that Supplier,
         Supplier's insurer(s) and anyone claiming by, through, under or in
         Supplier's behalf shall have no claim, right of action or right of
         subrogation against Company and its customers based on any loss or
         liability insured against under the foregoing insurance.

33.      INVOICING FOR GOODS
                  Supplier shall: (i) render original invoice, or as otherwise
         specified in this Agreement, showing Agreement and order number,
         through routing and weight, (ii)

<PAGE>   12
                                                                  Sheet 12 of 31

         render separate invoices for each shipment within twenty-four (24)
         hours after shipment, and (iii) mail invoices with copies of bills of
         lading and shipping notices to the address shown on this Agreement or
         order. If prepayment of transportation charges is authorized, Supplier
         shall include the transportation charges from the F.O.B. point to the
         destination as a separate item on the invoice stating the name of the
         carrier used.

34.      INVOICING FOR STOCKS
                  If Company requests for reasons other than covered by Section
         "FORCE MAJEURE", that shipment be postponed beyond the date shown on a
         purchase order, Supplier may invoice Company as of the original
         scheduled delivery date for MATERIAL manufactured under this Agreement,
         if it has been inspected and approved by Company's designated quality
         organization (provided inspection has been specified in this Agreement
         or in an order issued under this Agreement).

35.      JURISDICTION
                  Supplier agrees that any action or legal proceeding arising
         out of this Agreement shall be brought only in a court of competent
         jurisdiction in the United States of America and Supplier expressly
         submits to, and accepts the jurisdiction of, any such court in
         connection with such action or proceeding and Supplier further consents
         to the enforcement of any judgment against it arising therefrom in any
         jurisdiction in which it has or shall have any assets.

36.      LICENSES
                  No Licenses, express or implied, under any patents are granted
         by either Party to the other Party under this Agreement or order.

37.      MARKING
                  All MATERIAL furnished under this Agreement shall be marked
         for identification purposes in accordance with the specifications to be
         provided pursuant to this Agreement and as follows:

         (a)  with Supplier, vendor code 1NH75,  model/serial number; and

         (b)  with month and year of manufacture; and

         (c)  markings in accordance with the requirements outlined in Company
              Specifications KS-23490 and KS 22002, as amended from time to
              time, which Supplier has in its possession: and

         (d)  Common Language Equipment Identification (CLEI) Note: Common
              Language and CLEI are trademarks of Bell Communications Research;
              and

         (e)  Company Apparatus code, serial, or model numbers; and

         (f)  Warranty Eligibility System (WES) tracking information; and
<PAGE>   13

                                                                 Sheet 13 of 31

         (g)  Underwriters Laboratories and Federal Communications Commission
              markings as appropriate.

                  In addition, Supplier agrees to add any other identification
         which might be requested in writing by Company. Charges, if any for
         such additional identification marking shall be as agreed upon by
         Supplier and Company prior to the implementation of any change. This
         Section does not reduce or modify Supplier's obligations under Section
         26 IDENTIFICATION.

38.      MONTHLY ORDER AND SHIPMENT REPORTS
                  Supplier shall render monthly order and shipment reports on or
         before the tenth working day of the succeeding month containing the
         information required on the Company's monthly order and shipment
         reports. These forms will be furnished by Company.

39.      NON DISCLOSURE AGREEMENT
                  Whereas Company and Supplier each expect to disclose to the
         other party certain information concerning MATERIALs, business and
         strategies which are considered confidential and proprietary and which
         neither party wants to disclose to others, they have entered into a Non
         Disclosure Agreement dated as of July 21, 1999.  This section does not
         reduce or modify Supplier's obligations under Section "USE OF
         INFORMATION" or Company's obligations under "SUPPLIER'S INFORMATION."

40.      NON WAIVER
                  The failure of either party at any time to enforce any right
         or remedy available to it under this Agreement or otherwise with
         respect to any breach or failure by the other party shall not be
         construed to be a waiver of such right or remedy with respect to any
         other breach or failure by the other party.

41.      NOTICES
                  Any notice given or demanded which under the terms of this
         Agreement or under any statute must or may be given or made by Supplier
         or Company shall be in writing and shall be given or made by confirmed
         facsimile, or similar communication or by certified or registered mail
         addressed to the respective parties as follows

         To Company:        Lucent Technologies Inc.
                            Global Procurement Organization
                            188 Mt. Airy Road
                            Room C222
                            Basking Ridge, NJ  07920

                            Attn.:  Kevin R. Hazzard

                                        -OR-
<PAGE>   14
                                                                Sheet 14 of 31

         To Supplier:      Turnstone Systems, Inc.
                           274 Ferguson Avenue
                           Mountain View, CA 94043

                           Attn: Contracts Administration

                  Such notice or demand shall be deemed to have been given or
         made when sent by facsimile, or other communication or when deposited,
         postage prepaid in the U.S. mail.

                  The above addresses may be changed at any time by giving prior
written notice as above provided.

42.      OPERATING SYSTEM SOFTWARE
                  The term MATERIAL includes any software (operating program in
         machine readable form and related documentation) and storage media
         therefor normally embedded in the MATERIAL. Title to the software,
         including copyright, shall remain in Supplier. The party having title
         to the MATERIAL shall have title to the software storage media. For the
         life of the MATERIAL listed in this Agreement, Supplier grants to
         Company and any subsequent purchaser, lessee or other end user
         (referred to collectively in this section as "end user") a
         non-exclusive license to use said software on the MATERIAL on which it
         was delivered. Company and any subsequent end user may copy the
         software for use on such MATERIAL with which it was originally
         delivered and for archival purposes, but shall not knowingly reproduce
         either the original software for distribution to others.

43.      OZONE DEPLETING CHEMICALS
                  Supplier hereby warrants that it is aware of international
         agreements and pending legislation in several nations, including the
         United States, which would limit, ban and/or tax importation of any
         MATERIAL containing, or produced using ozone depleting chemicals
         ("ODCs"), including chlorofluorocarbons, halons and certain chlorinated
         solvents. Supplier hereby warrants that the MATERIAL furnished to
         Company will conform to all applicable requirements established
         pursuant to such agreements, legislation and regulations, and the
         MATERIAL furnished to Company will be able to be imported and used
         lawfully (and without additional taxes associated with ODCs not
         reported to Company by Supplier as set forth in this section) under all
         such agreements, legislation and requirements. Supplier also warrants
         that it is currently reducing, or if Supplier is not the manufacturer
         of the MATERIAL, is currently causing the manufacturing vendor to
         reduce and will, in an expeditious manner, eliminate, or, as
         applicable, have its manufacturing vendor eliminate the use of ODCs in
         the manufacture of the MATERIAL.

                  If the MATERIAL furnished by Supplier under this Agreement is
         manufactured outside the United States, Supplier shall, upon execution
         of this Agreement, and at any time that new MATERIALs are added to this
         Agreement or changes are made to the MATERIAL furnished under this
         Agreement, complete, sign and return to Company the
<PAGE>   15
                                                                 Sheet 15 of 31

         attached ODC Content Certification. The ODC Content Certification must
         be signed by Supplier's facility manager, corporate officer or his
         delegate.

                  The term "ODC content" on the ODC Content Certification means
         the total pounds of ODC used directly in the manufacture of each unit
         of MATERIAL. This includes all ODCs used in the manufacturing and
         assembly operations for the MATERIAL plus all ODCs used by Supplier's
         vendors and any other vendors in producing components or other
         MATERIALs incorporated into the MATERIAL sold to Company.

                  Supplier is responsible to obtain information on the ODC
         content of all components and other MATERIALs acquired to manufacture
         the MATERIAL and to incorporate such information into the total ODC
         content reported to Company. Provided however, that Supplier should not
         include in the ODC content those components or other MATERIALs which
         are manufactured in the United States. Supplier hereby warrants to
         Company that all information furnished by Supplier on the ODC Content
         Certification is complete and accurate and that Company may rely on
         such information for any purpose, including but not limited to
         providing reports to government agencies or otherwise complying with
         applicable laws. Supplier shall defend, indemnify and hold Company
         harmless of and from any claims, demands, suits, judgments,
         liabilities, fines, penalties, costs and expenses (including additional
         ODC taxes as provided for in paragraph one of this section and
         reasonable attorney's fees) which Company may incur under any
         applicable federal, state, or local laws or international agreements,
         and any and all amendments thereto by reason of Company's use of
         reliance on the information furnished to Company by Supplier on the ODC
         Content Certification or by reason of Supplier's breach of this
         section. Supplier shall cooperate with Company in responding to any
         inquiry concerning the use of ODCs to manufacture the MATERIAL or
         components thereof and to execute without additional charge any
         documents reasonably required to certify the absence or quantity of
         ODCs used to manufacture the MATERIAL or components thereof.

44.      OZONE DEPLETING SUBSTANCES LABELING
                  Supplier warrants and certifies that all MATERIAL and other
         MATERIALs, including packaging and packaging components, provided to
         Company under this Agreement have been accurately labeled, in
         accordance with the requirements of 40 CFR, Part 82 entitled
         "Protection of Stratospheric Ozone, Subpart E- The Labeling of
         MATERIALs Using Ozone Depleting Substances."

45.      PACKING, LABELING AND SERIALIZATION
                  MATERIAL purchased, repaired, replaced or refurbished under
         this Agreement shall be packed, labeled and serialized by Supplier at
         no additional charge in accordance with specifications PKG-91NJ1045
         "Packaging, Packing, Palletization, Labeling and Marking Requirements
         for Material being Delivered to Lucent Technologies Manufacturing and
         Distribution Locations", and KS-23490 "MATERIAL Bar Code, Serial and
         Comcode Label," as changed from time to time with Supplier's written

<PAGE>   16
                                                                 Sheet 16 of 31

         approval.

                  All electronic plug-ins shipped separately from their
         associated frames or mountings must be packaged using Electrostatic
         Shielded Packaging. Electrostatic Shielded Packaging is defined herein
         as packaging that meets the applicable requirements for `ELECTROSTATIC
         SHIELDING TYPE' packaging as prescribed in Electronic Industries
         Association (EIA) Interim Standard IS-5-A (`Packaging Material
         Standards for ESD Sensitive Items').

                  Supplier will package MATERIAL individually (except for small
         parts, such as screws) with appropriate protective material to
         guarantee safe arrival (e.g., plug-in boards should be in static
         controlled packaging and/or padded cartons). Bulk packaging of MATERIAL
         and parts is acceptable if agreed to by both parties. Each box will
         contain MATERIAL or parts ordered under a single purchase order, but
         multiple boxes may be placed in a larger container. Supplier will, when
         so requested by Company and without additional charge, provide and
         affix to each MATERIAL packaging, bar code labels as Company will
         specify.

46   POINT OF SALE INFORMATION
                  Company shall provide Supplier, on a monthly basis, data on
         the location of Company's customers who purchase Supplier's MATERIAL
         pursuant to this Agreement for the purpose of Supplier compensating
         Supplier's sales personnel.

47.      MATERIAL CHANGES
                  Supplier shall provide Company with at least thirty (30) days,
         prior written notice of any change proposed to be made in accordance
         with this Agreement, or in the Specification and documentation covered
         by this Agreement that would impact upon: (i) reliability, (ii)
         requirements of the Specification, or (iii) form, fit or function (as
         defined below).

                  The only exception will be in those cases where an extremely
         hazardous or unsatisfactory condition requires immediate action. In
         such cases, verbal notification shall be made, followed by Supplier's
         immediate written confirmation. Procedures for reporting MATERIAL
         changes are described in the "MATERIAL Change Notice Procedure" section
         of the Bellcore "Generic Requirements for Product Change Notices,"
         GR-209-CORE, Issue 3, September 1998.

                  Supplier shall submit changes to the following address:

                                      Lucent Technologies Inc.
                                      Room 3A-415C
                                      200 Schulz Dr.
                                      Red Bank, NJ 07701

                                      Attn.: Norman I. Ginsburg
<PAGE>   17
                                                                 Sheet 17 of 31

                  If, as mutually agreed by Company and Supplier, sufficient
         changes have been made to warrant a MATERIAL re-qualification, such
         re-qualification will be performed at no cost to Company unless
         otherwise agreed. MATERIAL shall be in accordance with the latest
         information stated or referenced in the Specification.

                  If the plan for MATERIAL Change is not accepted by Company, in
         addition to all other rights and remedies at law or equity or
         otherwise, and without any cost to or liability or obligation of
         Company, Company shall have the right to terminate this Agreement and
         to terminate any or all orders for MATERIAL affected by such change.
         Notwithstanding the above, Supplier shall continue to provide the
         current MATERIAL for a period of twelve (12) months from the date the
         change is effective.

48.      MATERIAL CONFORMANCE REVIEWS
                  Supplier shall, utilizing documented procedures specified
         herein, make such tests and inspections as are necessary to insure that
         MATERIAL meets all technical requirements of the MATERIAL
         specification. Supplier shall provide, without charge, any production
         testing facilities and personnel required to inspect the MATERIAL under
         Quality Program Specification (QPS) No. 40.030, as changed from time to
         time with Supplier's written approval. Company reserves the right to
         inspect MATERIAL prior to shipment from Supplier or Supplier's
         subcontractor(s). Such inspection shall be conducted by Company's
         Engineering and Environmental Technologies (EE&T) organization
         utilizing a 0.65% Acceptability Level (AQL) sampling plan as described
         in QPS 40.030. If MATERIAL fails inspection, Supplier agrees to pay for
         all re-inspection costs. Inspection requirements may be waived only by
         written notification from Company's Engineering and Environmental
         Technologies (EE&T) organization. In the event that any or all work
         under this Agreement is subcontracted to another Supplier, Company
         reserves the right to conduct the aforementioned inspections at the
         subcontractors facilities.

49.      MATERIAL DOCUMENTATION
                  Supplier shall furnish, at no charge, MATERIAL documentation,
         and any succeeding changes thereto, as described in the Technical
         Specification. Company may use, reproduce, reformat, modify and
         distribute such MATERIAL documentation, subject in each instance to
         Supplier's prior review and written approval, which approval shall not
         be unreasonably withheld.

                  Company shall reproduce Supplier's copyright notice contained
         in any documentation reproduced without change by Company. For
         documentation, which is reformatted or modified by Company, Company
         shall have the right to place only Company's own copyright notice on
         the reformatted or modified documentation. It is the intent of the
         parties that Company's copyright notice shall be interpreted to protect
         the underlying copyright rights of Supplier to the documentation to the
         extent such underlying rights are owned by Supplier.
<PAGE>   18
                                                                 Sheet 18 of 31

50.      PURCHASE ORDERS
                  Purchase orders issued under this Agreement shall be sent to
         the following address:

                                    Turnstone Systems, Inc.
                                    274 Ferguson Avenue
                                    Mountain View, CA 94043
                                    FAX: (650) 428-0200

                                    Attn.: Customer Service

                  Purchase orders shall specify: (i) description of MATERIAL,
         inclusive of any numerical/alphabetical identification referenced in
         the price list in this Agreement, (ii) delivery date, (iii) applicable
         price, (iv) location to which the MATERIAL is to be shipped and (v)
         location to which invoices shall be sent for payment.

51.      REGISTRATION AND RADIATION STANDARDS
                  When MATERIAL furnished under this Agreement is subject to
         Part 68, Part 15 or any other part of the Federal Communication
         Commission's Rules and Regulations, as may be amended from time to time
         (hereinafter "FCC Rules"), Supplier warrants that such MATERIAL
         complies with the registration, certification, type-acceptance and/or
         verification standards of the FCC Rules including, but not limited to,
         all labeling, customer instruction requirements, and the suppression of
         radiation to specified levels. Supplier shall also establish periodic
         on-going compliance retesting and follow a Quality Control program,
         submitted by Company, to assure that MATERIAL shipped complies with the
         applicable FCC Rules. Supplier shall indemnify and save Company
         harmless from any liability, fines, penalties, claims or demands
         (including the costs, expenses and reasonable attorney's fees on
         account thereof) that may be made because of Supplier's noncompliance
         with the applicable FCC Rules. Supplier shall defend Company, at
         Company's request, against such liability, claim or demand.

                   In addition, should MATERIAL which is subject to Part 15 of
         the FCC Rules, during use generate harmful interference to radio
         communications, Supplier shall provide the Company information relating
         to methods of suppressing such interference and pay the cost of
         suppressing such interference or, at the option of Company, accept the
         return of the MATERIAL and refund to Company the price paid for the
         MATERIAL less a reasonable amount for depreciation, if applicable.

                  To the extent that MATERIAL furnished under this Agreement is
         also subject to FCC Rules governing the use of the MATERIAL as a
         component in a system as identified in Supplier's Technical
         Specifications, Company shall be responsible for compliance with the
         applicable FCC Rules governing the system. Supplier shall fully
         cooperate with Company, by providing technical support and information,
         and, upon written request from Company, shall modify MATERIAL to enable
         Company to ensure ongoing compliance with the FCC Rules. Company shall
         pay any increase in Supplier's costs and/or expenses


<PAGE>   19

                                                                 Sheet 19 of 31

         resulting from Company's request to modify MATERIAL to enable Company
         to comply with the FCC Rules.

                  Nothing in this section shall be deemed to diminish or
         otherwise limit Supplier's obligations under the "WARRANTY" section or
         any other section of this Agreement.

52.      INSPECTION OF MATERIAL
                  Company may perform a visual and functional inspection of
         MATERIAL received prior to acceptance or rejection, and may refuse to
         accept MATERIAL which does not conform to the specifications of this
         Agreement. Company agrees to conduct such inspection within [***]
         ([***]) days. If, after [***] ([***]) calendar days from the date of
         delivery by Supplier, Company has not rejected MATERIAL by providing
         written notice to Supplier, it will be deemed accepted by Company. For
         purposes of this provision, functional and visual inspection shall have
         the same meaning as in paragraph 21 herein; i.e., confirmation that the
         MATERIAL does not contain one or more major defects that would make the
         MATERIAL unfit for use or installation, or that, during test, the
         MATERIAL operates as specified. The above shall not limit Supplier's
         obligations under the clauses WARRANTY and EPIDEMIC CONDITION.

                  Company may only reject MATERIAL which has failed the above
         visual and/or functional inspection. Company's sole remedies upon
         rejection of MATERIAL are: (1) return rejected MATERIAL for full credit
         at the price charged plus delivery charges; or (2) have rejected
         MATERIAL replaced by Supplier at the purchase price stipulated in this
         Agreement. Supplier shall incur all transportation costs and assume
         in-transit risk of loss and damage of all MATERIAL returned under this
         provision to Supplier.

53.      RELEASES VOID
                  Neither party shall require (i) waivers or releases of any
         personal rights or (ii) execution of documents which conflict with the
         terms of this Agreement, from employees, representatives or customers
         of the other in connection with visits to its premises and both parties
         agree that no such releases, waivers or documents shall be pleaded by
         them or third persons in any action or proceeding.

54.      REPAIRS NOT COVERED UNDER WARRANTY
                  In addition to repairs provided for in the "WARRANTY" section
         Supplier shall provide repair service on all MATERIAL ordered under
         this Agreement during the term of this Agreement. MATERIAL to be
         repaired under this section will be returned to a location designated
         by Supplier, and unless otherwise agreed upon by Supplier and Company,
         Supplier shall ship the repaired MATERIAL which meets the
         Specifications set forth in the "SPECIFICATIONS OR DRAWINGS" section
         and all other Specifications within 10 business days of receipt of the
         defective or non-conforming MATERIAL. With the concurrence and
         scheduling of Company, repair may be made by Supplier on site.

                  If MATERIAL is returned to Supplier for repair as provided for
         in this section and is determined to be beyond repair, Supplier shall
         so notify Company. If requested by

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<PAGE>   20
                                                                Sheet 20 of 31

         Company, Supplier will sell to Company a replacement at the price set
         forth in Supplier's then current agreement with Company for said
         MATERIAL or, if no such agreement exists, at a price agreed upon by
         Supplier and Company. If the parties fail to agree on a price, the
         price shall be a reasonably competitive price for such MATERIAL at the
         time for delivery. Further, if requested by Company, Supplier shall
         take the necessary steps to dispose of the unrepairable MATERIAL and
         pay to Company the salvage value, if any. Replacement and repaired
         MATERIAL shall be warranted as set forth in the "WARRANTY" section.

                  This Agreement does not grant Supplier an exclusive privilege
         to repair any or all of the MATERIAL purchased under this Agreement for
         which Company may require repair; and Company may perform the repairs
         or contract with others for these services.

                  All transportation costs of and in transit risk of loss and
         damage to MATERIAL returned to Supplier for repair under this section
         will be borne by Company and all transportation costs of and in transit
         risk of loss and damage to such repaired or replacement MATERIAL
         returned to Company will be borne by Company.

                  Repairs performed under this section will be charged on a Time
         and Materials basis as according to Supplier's then current Time and
         Material charges.

55.      REPAIR PROCEDURES
                  Company shall furnish the following information with MATERIAL
         returned to Supplier for repair: (a) Company's name and complete
         address; (b) name(s) and telephone numbers(s) of Company's employee(s)
         to contact in case of questions about the MATERIAL to be repaired; (c)
         ship-to address for return of repaired MATERIAL if different than (a);
         (d) a complete list of MATERIAL returned; (e) the nature of the defect
         or failure if known; and (f) whether or not returned MATERIAL is in
         warranty. Supplier shall, within ten (10) days of the execution of this
         Agreement, provide a written notice to Company specifying (i) the
         name(s) and telephone number(s) of the individual(s) to be contacted
         concerning any questions that may arise concerning repair, and (ii) if
         required, any special packing of MATERIAL which might be necessary to
         provide adequate in-transit protection from transportation damage.

                  MATERIAL repaired by Supplier shall have the repair completion
         date stenciled or otherwise identified in a permanent manner at a
         readily visible location on the MATERIAL and the repaired MATERIAL
         shall be returned with a tag or other papers describing the repairs
         which have been made.

                  All invoices originated by Supplier for repair services must
         be clearly identified as such, and must contain: (i) a reference to
         Company's purchase order for these repair services, (ii) a detailed
         description of repairs made by Supplier and the need therefor, and
         (iii) an itemized listing of parts and labor charges, if any. Replaced
         parts will, upon request, be available for inspection by or returned to
         Company. Further, the provisions of the "INVOICING" and "SHIPPING"
         sections, other than provisions relating to

<PAGE>   21
                                                                Sheet 21 of 31

         transportation charges with respect to MATERIAL repaired under
         warranty, shall apply to Supplier's return to Company of repaired
         MATERIAL.

56.      RIGHT OF ENTRY
                  Each party shall have the right to enter the premises of the
         other party during standard business hours with respect to the
         performance of this Agreement, including an inspection or a Quality
         Review, subject to all plant rules and regulations, clearances,
         security regulations and procedures as applicable. Each party shall
         provide safe and proper facilities for such purpose. No charge shall be
         made for such visits. It is agreed that prior notification will be
         given when access is required.

57.      SAFETY CERTIFICATION
                  All MATERIAL purchased under this Agreement shall be designed
         to be in compliance with the applicable Underwriters Laboratories
         (UL)and Canadian Standards Association (CSA) rules and regulations. It
         is agreed that Supplier shall be responsible for filing the required
         documents to obtain compliance with said Underwriters Laboratories
         Standards and Canadian Standards. Supplier shall be responsible for
         making the MATERIAL available for testing.

58.      SECTION HEADINGS
                  The headings of the sections in this Agreement are inserted
         for convenience only and are not intended to affect the meaning or
         interpretation of this Agreement.

59.      SERVICES
                  Visits by Supplier's representatives or its suppliers'
         representatives for inspection, adjustment or other similar purposes in
         connection with MATERIAL purchased under this Agreement shall for all
         purposes be deemed "Work under this Agreement" and shall be at no
         charge to Company unless otherwise agreed in writing between the
         parties.

60.      SEVERABILITY
                  If any of the provisions of this Agreement shall be invalid or
         unenforceable, such invalidity or unenforceability shall not invalidate
         or render unenforceable the entire Agreement, but rather the entire
         Agreement shall be construed as if not containing the particular
         invalid or unenforceable provision or provisions, and the rights and
         obligations of Supplier and Company shall be construed and enforced
         accordingly.

61.      SHIPPING
                  Supplier shall: (i) ship the MATERIAL covered by this
         Agreement or order complete unless instructed otherwise, (ii) ship to
         the destination designated in the Agreement or order, (iii) ship
         according to routing instructions given by Company, (iv) place the
         Agreement and order number on all subordinate documents, (v) enclose a
         packing memorandum with each shipment and, when more than one package
         is shipped, identify the package containing the memorandum; and (vi)
         mark the order number on all packages and shipping papers. Adequate
         protective packing shall be furnished at no additional charge. Shipping
         and routing instructions may be furnished or altered by

<PAGE>   22
                                                                Sheet 22 of 31

        Company without a writing. If Supplier does not comply with the terms of
        the FOB section of the Agreement or order or with Company's shipping or
        routing instructions, Supplier authorizes Company to deduct from any
        invoice of Supplier (or to charge back to Supplier), any increased cost
        incurred by Company as a result of Supplier's noncompliance.

62.      SHIPPING INTERVAL
                  The delivery schedule applicable to each purchase order will
         be agreed upon by Supplier and Company and set forth in the purchase
         order. (Note: Supplier has indicated that MATERIAL can usually be
         shipped an average of [***] business days after receipt of Company's
         purchase order for forecasted demand; however, in no event shall the
         delivery interval exceed [***] business days after receipt of purchase
         order.)

                  If Supplier exceeds the above maximum interval then in
         addition to all other rights and remedies at law or equity or
         otherwise, and without any liability or obligation of Company, Company
         shall have the right to: (a) cancel such purchase order, or (b) extend
         such delivery date to a later date, subject, however, to the right to
         cancel as in (a) preceding if delivery is not made or performance is
         not completed on or before such extended delivery date. If Company
         elects to extend such delivery date, Supplier shall absorb the
         difference between the charges to ship normal transportation and the
         charges to ship premium overnight.

                  If a purchase order is canceled by Company pursuant to the
         above, Company shall have the right to retain or return any or all
         MATERIAL received by or paid for by Company under such purchase order.
         Within fifteen (15) business days of Supplier's receipt of returned
         MATERIAL, Supplier shall reimburse Company for the costs of shipping
         the MATERIAL returned to Supplier and for any amounts, including
         shipping costs, previously paid by Company for the MATERIAL. Company
         shall pay for any MATERIAL it retains at the prices set forth in
         APPENDIX A, less applicable discounts which shall be applied on the
         basis of the quantity specified in the purchase order.

                  If, during the course of this Agreement, Supplier determines
         that Supplier will no longer be able to ship within the above interval,
         Supplier shall immediately notify Company's buyer to that effect.
         Supplier shall also notify Company's buyer, as soon as it becomes
         apparent, if Supplier is unable to meet the delivery date for an order.
         However, nothing contained in this paragraph shall waive Company's
         rights as set forth above in this section.

63.      STORAGE OF PAID FOR STOCK
                  Subject to the section "OPERATING SYSTEM SOFTWARE", Company
         has and shall have at all times all right, title and interest in all
         MATERIAL invoiced to Company in accordance with the section "INVOICING
         FOR STOCKS". Such MATERIAL shall be referred to in this section as
         "Company Property." Supplier shall store such Company Property without
         cost to Company at Supplier's A-Plus Manufacturing Corp. 2381 Bering

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<PAGE>   23
                                                                Sheet 23 of 31


         Drive San Jose, CA 95131 facility and ship such Company Property as
         ordered by Company. In addition, Supplier shall:

                  (i) Be responsible for the safekeeping of the Company
         Property, assume all risks of loss or damage to the same and be liable
         for the full actual value of such Company Property. In case of removal
         of all or any part of the Company Property from one building to
         another, Supplier's responsibility for loss or damage shall continue
         and Supplier shall give Company at least ten (10) days advance notice
         in writing of the removal, except when the removal is required to
         comply with Company's shipping orders or to protect the Company
         Property from loss or damage.

                  (ii) Permanently mark or if impracticable to do so then affix
         labeling stating that the Company Property is the "PROPERTY OF LUCENT
         TECHNOLOGIES INC." For purposes of this section, the term "LUCENT
         TECHNOLOGIES INC." shall be deemed to mean Company or the Company
         affiliated or associated company which owns the tooling, as applicable.

                  (iii) Store the Company Property safely, indoors in protected
         areas approved by Company. Store the Company Property segregated from
         other property in sections of Supplier's plant marked Property of
         Company.

                  (iv) Deliver the Company Property only to Company or Company's
         designated customers in accordance with Company's orders or upon
         Company's demand, FOB Supplier's plant without additional charge for
         removal, packing, or crating.

                  (v) Supplier shall not allow any security interest, lien, tax
         lien or other encumbrance (collectively referred to as "encumbrance")
         to be placed on any Company Property. Supplier shall give Company
         immediate written notice should any third party attempt to place or
         place an encumbrance on such Company Property. Supplier shall indemnify
         and hold Company harmless from any such encumbrance. Supplier shall, at
         Company's request, promptly execute a "protective notice" UCC-1 form
         and all other documents reasonably necessary to enable Company to
         protect its interest in such Company Property. This Agreement shall
         constitute the security agreement required by the UCC of the
         appropriate state.

                  (vi) Company may inspect, inventory, and authenticate the
         account of the Company Property during Supplier's normal business
         hours. Supplier shall provide Company access to the premises where all
         such Company Property is located.

                  The obligations assumed by Supplier with respect to the
         Company Property are for the protection of Company's property. If
         Supplier defaults in carrying out Supplier's obligations under this
         Agreement, then, at no cost to Company and upon twenty-four (24) hours
         notice to Supplier, Company may cancel this Agreement in whole or in
         part or withdraw all or any part of the Company Property, or both.
         Supplier shall, at Company's
<PAGE>   24
                                                                Sheet 24 of 31

         option, return to Company or hold for Company's disposition any or all
         of such Company Property in Supplier's possession.

64.      SUPPLIER'S INFORMATION
                  Company shall view as Supplier's property any document, print,
         tape, disc, tool, or other tangible information-conveying or
         performance-aiding article owned or controlled by Supplier and
         identified by Supplier as proprietary/confidential either in writing or
         orally. The aforementioned material and information may be identified
         by Supplier as proprietary/confidential verbally and shall be followed
         up by written notice from Supplier to Company. Company shall, at no
         charge to Supplier, and as Supplier directs, destroy or surrender to
         Supplier promptly at its request any such article or any copy of such
         Information. Company shall keep Information confidential and use it
         only in performing under this Agreement and obligate its employees,
         subcontractors and others working for it to do so, provided that the
         foregoing shall not apply to information previously known to Company
         free of obligation, or made public through no fault imputable to
         Company.

65.      SURVIVAL OF OBLIGATIONS
                  The obligations of the parties under this Agreement which by
         their nature would continue beyond the termination, cancellation or
         expiration of this Agreement shall survive termination, cancellation or
         expiration of this Agreement.

66.      TAXES
                  Company shall reimburse Supplier only for the following tax
         payments with respect to transactions under this Agreement unless
         Company advises Supplier than an exemption applies: state and local
         sales and use taxes, as applicable. Taxes payable by Company shall be
         billed as separate items on Supplier's invoices and shall not be
         included in Supplier's prices. Company shall have the right to have
         Supplier contest any such taxes that Company deems improperly levied at
         Company's expense and subject to Company's direction and control.

67.      TECHNICAL SUPPORT
                  Company will be the primary interface to the customer and
         will provide Tier 1, Tier 2 and Tier 3 technical customer support.

                  Supplier will provide Tier 4 technical customer support. "Tier
         4" means the fourth of four levels of technical customer support and
         addresses issues escalated from Tier 3 when either the source of the
         issue cannot be identified, or the issue is identified and must be
         addressed by the manufacturer of the MATERIAL. Tier 4 technical
         customer support will be provided 24 hours a day, 7 days a week via
         telephone to Company's support personnel at no charge. Supplier's
         response time shall be within 30 minutes on Monday through Friday, 9 am
         - 6pm (Central Time), and within 2 hours at all other times. Nine (9)
         months after the effective date of this Agreement and every six months
         thereafter, Supplier may request a review of Company's Tier 4 support
         requests that Supplier believes do not fit into the category of support
         issues as defined in this Section. Company shall be given a

<PAGE>   25
                                                                Sheet 25 of 31

         reasonable cure period to correct any problem areas identified in the
         review before re-opening the Tier 4 compensation provision of this
         Section.

                  Company shall be entitled to ongoing technical support,
         including field service and assistance and technical support in the
         development of customer proposals, provided, however, that the
         availability or performance of this technical support service shall not
         be construed as altering or affecting Supplier's obligations as set
         forth in the WARRANTY Section or elsewhere provided for in this
         Agreement.

                  It is the intent of this Agreement that the Supplier shall
         provide initial training and ongoing occasional updates. Charges for
         field service technical support, will be based on Supplier's then
         current standard charges for such services.

68.      TERMINATION OF PURCHASE ORDER
                  Company may at any time terminate any portion or the total
         quantity of any purchase order(s) placed under this Agreement.
         Company's liability to Supplier with respect to such termination shall
         be limited to (i) Supplier's purchase price of all components for the
         MATERIAL (not usable in Supplier's other operations or salable to
         Supplier's other customers), plus (ii) the actual costs incurred by
         Supplier in procuring and manufacturing MATERIAL (not usable in
         Supplier's other operations or salable to Supplier's other customers)
         in process as of the date of giving notice of termination, less (iii)
         any salvage value thereof. However, no such termination charges will be
         invoiced if, within sixty (60) days of notice of termination, MATERIAL
         equivalent in kind to that being terminated is ordered by Company. If
         requested, Supplier shall substantiate such cost and price with proof
         satisfactory to Company.

69.      TIMELY PERFORMANCE
                  If Supplier has knowledge that anything prevents or threatens
         to prevent the timely performance of the Work under this Agreement,
         Supplier shall immediately notify Company's Representative thereof and
         include all relevant information concerning the delay or potential
         delay.

70.      TITLE AND RISK OF LOSS
                  Title (other than software) and risk of loss and damage to
         MATERIAL including software purchased by Company under this Agreement
         or an order issued pursuant to this Agreement shall vest in Company
         when the MATERIAL has been delivered at the FOB point. If this
         Agreement or an order issued pursuant to this Agreement calls for
         additional services including, but not limited to, unloading,
         installation, or testing to be performed after delivery, Supplier shall
         retain title and risk loss and damage to the MATERIAL until the
         additional services have been performed. If Supplier is authorized to
         invoice Company for MATERIAL prior to shipment or prior to the
         performance of additional services, title to MATERIAL (other than
         software) shall vest in Company upon payment of the invoice, but risk
         of loss and damage shall pass to Company when the additional services
         have been performed.
<PAGE>   26
                                                                Sheet 26 of 31

71.      TOXIC SUBSTANCES AND MATERIAL HAZARDS
                  Supplier hereby warrants to Company that, except as expressly
         stated elsewhere in this Agreement, all MATERIAL furnished by Supplier
         as described in this Agreement is safe for its foreseeable use, is not
         defined as a hazardous or toxic substance or material under applicable
         federal, state or local law, ordinance, rule, regulation or order
         (hereinafter collectively referred to as "law" or "laws"), and presents
         no abnormal hazards to persons or the environment. Supplier also
         warrants that it has no knowledge of any federal, state or local law,
         that prohibits the disposal of the MATERIAL as normal refuse without
         special precautions except as expressly stated elsewhere in this
         Agreement. Supplier also warrants that where required by law, all
         MATERIAL furnished by Supplier is either on the EPA Chemical Inventory
         compiled under Section 8 (a) of the Toxic Substance Control Act, or is
         the subject of an EPA-approved pre manufacture notice under 40 CFR Part
         720. Supplier further warrants that all MATERIAL furnished by Supplier
         complies with all use restrictions, labeling requirements and all other
         health and safety requirements imposed under federal, state, or local
         laws. Supplier further warrants that, where required by law, it shall
         provide to Company, prior to delivery of the MATERIAL, a Material
         Safety Data Sheet which complies with the requirements of the
         Occupational Safety and Health Act of 1970 and all rules and
         regulations promulgated thereunder.

                  Supplier shall defend, indemnify and hold Company harmless for
         any expenses (including, but not limited to, the cost of substitute
         material, less accumulated depreciation) that Company may incur by
         reason of the recall or prohibition against continued use or disposal
         of MATERIAL furnished by Supplier as described in its Agreement whether
         such recall or prohibition is directed by Supplier or occurs under
         compulsion of law. Company shall cooperate with Supplier to facilitate
         and minimize the expense of any recall or prohibition against use or
         disposal of MATERIAL directed by Supplier or under compulsion of law.

                  Supplier further shall defend, indemnify and hold Company
         harmless of and from any claims, demands, suits, judgments,
         liabilities, costs and expenses (including reasonable attorney's fees)
         which Company may incur under any applicable federal, state or local
         laws, and any and all amendments thereto, including but not limited to
         the Comprehensive Environmental Response, Compensation and Liability
         Act of 1980; the Consumer MATERIAL Safety Act of 1972; the Toxic
         Substance Control Act; Fungicide, Rodenticide Act; the Occupational
         Safety and Health Act; and the Atomic Energy Act; and any and all
         amendments to all applicable federal, state, or local laws, by reason
         of Company's acquisition, use, distribution or disposal of MATERIAL
         furnished by Supplier under this Agreement.

72.      TRAINING
                  Supplier will provide instructional Source Material, at no
         charge, that can be used by Company to generate Customer Training
         materials. Supplier will provide two (2) train-the-trainer courses, at
         no charge, for Company's personnel at a level mutually agreed upon so
         that Company will be able to effectively market and support Supplier's
         MATERIAL.

<PAGE>   27
                                                                Sheet 27 of 31

         Additional courses will be made available to Company at
         Supplier's then current rates. The training will include, but not be
         limited to the MATERIAL's features, competitive information, target
         markets and selling strategies, as well as technical aspects of the
         MATERIAL to enable Company to properly configure Supplier's MATERIAL to
         operate with Company's MATERIALs and provide technical support.

73.      USE OF INFORMATION
                  Supplier shall view as Company's property any idea, data,
         program, technical, business or other intangible information, however
         conveyed, and any document, print, tape, disc, tool, or other tangible
         information-conveying or performance-aiding article owned or controlled
         by Company, and provided to, or acquired by, Supplier under or in
         contemplation of this Agreement (Information). Supplier shall, at no
         charge to Company, and as Company directs, destroy or surrender to
         Company promptly at its request any such article or any copy of such
         Information. Supplier shall keep Information confidential and use it
         only in performing under this Agreement and obligate its employees,
         subcontractors and others working for it to do so, provided that the
         foregoing shall not apply to information previously known to Supplier
         free of obligation, or made public through no fault imputable to
         Supplier.

74.      VARIATION IN QUANTITY
                  Company assumes no liability for MATERIAL produced, processed
         or shipped in excess of the amount specified in this Agreement or in an
         order issued pursuant to this Agreement.

75.      WARRANTY
                  Supplier warrants to Company that MATERIAL furnished will be
         new, free from defects in design, material and workmanship and will
         conform to and perform in accordance with the Specifications. These
         warranties shall continue for a period of twelve (12) months from the
         date of acceptance by Company, but in no event more than 13 months from
         the date of shipment.

                  Supplier also warrants to Company that services will be
         performed in a first class, workmanlike manner. In addition, if
         MATERIAL furnished contains one or more manufacturer's warranties,
         Supplier hereby assigns such warranties to Company. Supplier warrants
         that at the time of delivery to Company such MATERIAL shall be free of
         any security interest or any other lien or any other encumbrance
         whatsoever. All warranties shall survive inspection, acceptance and
         payment.

                  Defective or non-conforming MATERIAL will be returned to
         Supplier for repair or replacement, at no cost to Company, with risk of
         in-transit loss and damage borne by Supplier and freight paid by
         Supplier. . Unless otherwise agreed upon by Supplier and Company,
         Supplier shall complete repairs and ship the repaired MATERIAL within
         ten (10) business days of receipt of defective or non- conforming
         MATERIAL, or at Company's option, ship replacement MATERIAL within ten
         (10) business days after verbal notification is given Supplier by
         Company. Supplier shall bear the risk of in-transit

<PAGE>   28
                                                                Sheet 28 of 31

         loss and damage and shall prepay and bear that cost of freight for
         shipments to Company of repaired or replaced MATERIAL.

                  If MATERIAL returned to Supplier for repair as provided for in
         this section is determined to be beyond repair, Supplier shall promptly
         so notify Company and, unless otherwise agreed to in writing by
         Supplier and Company, Supplier shall ship replacement MATERIAL without
         charge within ten (10) business days of such notification.

                  Replacement MATERIAL shall be warranted as set forth above in
         this "WARRANTY" section. Any MATERIAL which is repaired, modified, or
         otherwise serviced by Supplier shall be warranted as provided in this
         "WARRANTY" section for the remainder of the warranty period (based upon
         the date repair, modification or other service is completed and
         accepted by Company) or ninety (90) business days after the MATERIAL is
         returned to a Customer, whichever is later.

                  If Supplier is unable to find any defect or nonconformity, the
         material will be returned to Company at Company's expense.

                  EXCEPT FOR THE WARRANTIES EXPRESSLY SET FORTH IN THIS
         AGREEMENT, SUPPLIER MAKES NO OTHER WARRANTIES REGARDING THE MATERIAL,
         ANY SOFTWARE INCORPORATED THEREIN OR ANY SERVICES PROVIDED THEREWITH
         AND HEREBY DISCLAIMS ANY AND ALL SUCH OTHER WARRANTIES, EXPRESS, OR
         IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTIES OF
         MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE, WHICH ARE HEREBY
         EXCLUDED. SUPPLIER'S LIABILITY UNDER THE WARRANTY SHALL BE LIMITED TO A
         REFUND OF THE COMPANY'S PURCHASE PRICE OR REPAIR OF THE MATERIAL. IN NO
         EVENT SHALL SUPPLIER BE LIABLE FOR THE COST OF PROCUREMENT OF
         SUBSTITUTE GOODS BY THE COMPANY OR FOR ANY SPECIAL, CONSEQUENTIAL OR
         INCIDENTAL DAMAGES FOR BREACH OF WARRANTY.

76.      YEAR 2000 WARRANTY
                  With respect to all Material, Equipment, Services and Software
         provided to Company under this Agreement, Supplier warrants to Company
         that: (i) the operation of such deliverables on or after January 1,
         2000, without limitation as to date, shall in no way be different from
         their operation prior to that date; and (ii) such deliverables will be
         able to process, store, record and present data containing dates in the
         Year 2000, and thereafter without limitation as to date, in the same
         manner as data containing dates prior to the Year 2000. Supplier
         further warrants that to the extent its internal systems impact its
         relationship with Company, such systems also comply with the foregoing
         warranties. Upon request by Company, Supplier agrees to: (i) provide
         written certification of the foregoing warranties to Company; and (ii)
         allow Company to reasonably verify compliance with these warranties.

<PAGE>   29
                                                                Sheet 29 of 31

77.      ENTIRE AGREEMENT
                  This Agreement shall incorporate the typed or written
         provisions on Company's orders issued pursuant to this Agreement and
         shall constitute the entire agreement between the parties with respect
         to the subject matter of this Agreement and the order(s) and shall not
         be modified or rescinded, except by a writing signed by Supplier and
         Company. Printed provisions on the reverse side of
         Company's orders (except as specified otherwise in this Agreement) and
         all provisions on Supplier's forms shall be deemed deleted. Estimates
         or forecasts furnished by Company shall not constitute commitments. The
         provisions of this Agreement supersede all contemporaneous oral
         agreements and all prior oral and written communications, and
         understandings of the parties with respect to the subject matter of
         this Agreement.

        Accepted (Date):  December 9, 1999



         TURNSTONE SYSTEMS, INC.                LUCENT TECHNOLOGIES INC.

         By: /s/ Richard N. Tinsley             By: /s/ Kevin R. Hazzard
             -----------------------------          --------------------------
         Name (Print):  Richard N. Tinsley      Name (Print): Kevin R. Hazzard
         Title:  CEO                            Title: Buyer-Specialist


ATTACHMENT - The following Attachment is hereby made part of the Agreement:

Appendix A        Turnstone Copper CrossConnect Price Guide
<PAGE>   30


                   TURNSTONE COPPER CROSS CONNECT PRICE GUIDE

<TABLE>
<CAPTION>

 LUCENT    MANUFACTURER                                                        LIST
 COMCODE     PART NO.             PRODUCT DESCRIPTION                        PRICE      [***]          [***]         [***]
- ---------------------------------------------------------------------------------------------------------------------------------
<S>        <C>         <C>                                                <C>         <C>           <C>            <C>
408129344  CSX100-23   Copper Xconn Loop Management Sys w/4 line cards    $28,970.00   $[***]          $[***]         $[***]
- ---------------------------------------------------------------------------------------------------------------------------------
408165728    600003    Module, L140 Line card, 25 pair                     $3,395.00   $[***]          $[***]         $[***]
- ---------------------------------------------------------------------------------------------------------------------------------
408165736    600004    Module, P100 Processor card                         $8,795.00   $[***]          $[***]         $[***]
- ---------------------------------------------------------------------------------------------------------------------------------
408172948    600000    23" Chasis, for Copper Xconn base system            $6,595.00   $[***]          $[***]         $[***]
- ---------------------------------------------------------------------------------------------------------------------------------
             600001    19" Chasis, for Copper Xconn base system            $6,295.00   $[***]          $[***]         $[***]
- ---------------------------------------------------------------------------------------------------------------------------------
</TABLE>

*   [***]
**  [***]
*** [***]


<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------
   LUCENT       MANUFACTURER                                                          LIST
   COMCODE       PART NO.                     PRODUCT DESCRIPTION                     PRICE         [***]
- -----------------------------------------------------------------------------------------------------------
<S>             <C>               <C>                                               <C>           <C>
                  600026          Module, M101 Central Office Management Card       $ 2,495.00    $ [***]
- -----------------------------------------------------------------------------------------------------------
</TABLE>

- ------
***Certain information on this page has been omitted and filed
   separately with the Commission. Confidential treatment has
   been requested with respect to the omitted portions.


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