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Exhibit 10.10
 
 Amendment
No. 4 to Contract No.
 th
 Whereas,
 Whereas,
 Whereas,
 Whereas,
 NOW, THEREFORE,
 1. Scope of Amendment No. 4
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1.
    
    Suppliers delivery of the Product to Verizons designated lab location;2.
    
    Suppliers provision of Services, as defined herein, including installation
and
technical support Services [If Applicable];3.
    
    Verizons use of the Product during Integration Testing and option to elect
ownership of the Product subsequent to such Testing;4.
    
    Verizons Integration Testing Criteria;5.
    
    The treatment of Test Results, as defined herein; and6.
    
    Suppliers payment of Integration Testing Charges, as defined herein.
  2. Integration Testing Criteria and Integration Testing
 Generic Criteria for Verizon Lab Entry,
 3. Integration Testing
 a. Delivery of Product
  b. Documentation
  2




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c. Supplier Integration Testing Representation and Warranty
 Specific Criteria for Verizon Lab
Entry
 d. Integration Testing License and Transfer of Ownership
    e. Verification of Integration Testing Criteria
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f. Termination of Integration Testing
   4. Laboratory Testing Charges
   4




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5. Invoicing and Payments
   6. Test Results
   5




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7.
Title and Risk of Loss
    8. Technical Representatives and Billing Contacts
   [needs to be completed]Supplier Technical Representative
    
    Supplier Billing ContactWes Biggers
    
    Bill Smith17101 East Ohio Drive
    
    [127 Jetplex CircleAurora, CO 80017
    
    Madison, AL 35758303-696-2213
    
    256-327-2204wes.biggers@verilik.com
    
    bsmith@verilink.com
 Verizon Technical Representative
    
    Verizon Billing ContactBill Spencer
    
    Catherine McAllisterVerizon Technology Organization
    
    Verizon Laboratories Inc.500 Westchester Avenue
    
    40 Sylvan Road  MS LAOMS10
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White Plains, NY 10604
    
    Waltham, MA 02451914-644-4388
    
    781-466-2254e-mail: william.a.spencer@verizon.com
    
    e-mail: cathy.mcallister@verizon.com
   9. Access by Supplier
  10. Hazardous Materials
   11. Excusable Delays
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12. Disclaimer
  13. Installation
  14. Tools and Equipment
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15. Miscellaneous
 (a)
    
    Continuing Effect. On and after the Effective Date of this Amendment, each
reference in the Agreement to this Agreement, hereunder, hereof, or words of
like import shall remain and be a reference to the Agreement as amended hereby. Except
as specifically amended herein, the Agreement shall remain in full force and effect
and is hereby ratified and confirmed in all respects.(b)
    
    Entire Agreement. This Amendment No. 4, along with its Attachments and the
Agreement, constitute the entire agreement with respect to the subject matter hereof
and supersedes any prior or contemporaneous written or oral representations with
regard to same. This Amendment No. 4 may not be modified except by a writing signed by
both parties.(d)
    
    Counterparts. This Amendment No. 4 may be executed in separate
counterparts by each of the parties hereto, each of which when so combined shall
constitute one of the same instrument.
  VERILINK CORP.
    
    TELESECTOR RESOURCES, INC.(a Verizon Company)BY:
    
    /s/ Wayne Shakelford
    
    BY:
    
    /s/ George HanozaNAME: Wayne Shakelford
    
    NAME: George HanozaTITLE: Vice President
    
    TITLE:
Senior Sourcing Process Leader
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