EXHIBIT
      10.20

    


    Note:
      Portions of this exhibit indicated by [*] are subject to a confidential
      treatment request, and have been omitted from this exhibit. Complete, unredacted
      copies of this exhibit have been filed with the Securities and Exchange
      Commission as part of the Company’s confidential treatment request.


    


     AMENDMENT
      OF 2nd
      PURCHASE CONTRACTS (YZN/ACL-F2)

    


    THIS
      AMENDMENT OF 2nd
      PURCHASE
      CONTRACT (hereinafter called, “This Amendment”) is made this 25th
      day of
      February, 2006, by and between YOZAN INCORPORATED of the city of Tokyo, Japan,
      (hereinafter called, “YZN”) and AIRSPAN COMMUNICATIONS LIMITED of the city of
      Uxbridge, Middlesex, U.K., (hereinafter called, “ACL”), to amend 2nd
      PURCHASE
      CONTRACT (YZN/ACL-S13) dated 13th
      September, 2005, (hereinafter called, “2nd
      P/C”)
      after correction by AMENDMENT OF 1st
      AND
      2nd
      PURCHASE
      CONTRACTS (YZN/ACL-S22) as follows :

    


    
      	
              1.

            	
              ARTICLE
                4. of 2nd
                P/C (“ PURCHASE QUANTITIES AND CONTRACT PRICES”) is amended as follows
                :

            


    

     

    “(1)
      The
      quantities and Contract Prices on CIP Narita Airport basis of Products to be
      purchased by YZN from ACL under This Contract are set forth herebelow in this
      Article : 

     

    
      
        	 	
                (Name
                  of Products)

              	
                (Purchase
                  Quantities)

              	
                (Contract
                  Price)

              
	
                1

              	
                MicroMAX-SDR
                  

              	
                [*]
                  Units

              	
                US$[*].-

              
	
                2.

              	
                Radio-Transceiver

              	
                [*]
                  Units

              	
                US$[*].-

              
	
                3.

              	
                Enclosure/Aux.
                  for Single B/S Products Set

              	
                [*]
                  Units

              	
                US$[*].-

              
	
                4.

              	
                Enclosure/Aux.
                  for Double B/S Products Set 

              	
                NIL

              
	
                5.

              	
                Netspan-NMS
                  1 Set for 10,000STs

              	
                [*]
                  (up to cumulated [*]
                  Units)
                  

              
	
                6.

              	
                EasyST

              	
                [*]

              
	
                7.

              	
                WiFi-AP
                  For EasyST

              	
                [*]

              
	
                8.

              	
                ProST
                  

              	
                [*]
                  Units
                  

              	
                US$[*].-

              
	
                9.

              	
                WiFi-AP
                  For ProST 

              	
                [*]
                  Units

              	
                US$[*].-

              
	
                10.

              	
                CSCA
                  S/W 1 set for 1,200 Units 

              	
                Free

              
	
                11.

              	
                External
                  Cabling 

              	
                [*]
                  Units

              	
                US$[*].-

              
	
                12.

              	
                GPS
                  

              	
                 [*]
                  Units

              	
                US$[*].-

              
	
                13.

              	
                Cable
                  for GPS 

              	
                 [*]
                  Units

              	
                US$[*].-

              
	
                14.

              	
                Cable
                  for Slave MicroMAX-SDR 

              	
                [*]
                  Units 

              	
                US$[*].-

              
	
                15.

              	
                Outdoor
                  PSU 

              	
                 [*]
                  Units

              	
                US$[*].-

              
	 	
                (Grand
                  Total before volume discount : US$[*].-)

              


      

    

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    
      	
              (2)

            	
              ACL
                gives YZN a volume discount from the above Grand Total. After this
                discount, The
                Total Contract Price of This Contract is U.S.$26,025,446.-. The discount
                amount
                shall be calculated and applied on pro-rata basis against each
                ACL’s

            


    

    invoices.
      “

    
      	2.	
              As
                the result of the above 1. amendment, the additional Down Payment
                of
                U.S.$3,307,633.- shall be paid by YZN to ACL within two weeks of
                This
                Amendment in addition to the Down Payment already paid according
                to
                Article 6.-Clause 1. of 2nd
                P/C. Now, this is calculated as follows
                :

            


    

    
    

     

    
      	
              The
                total Contract Price of 2nd
                P/C 

            	
              U.S.$15,000,000.-

            
	
              The
                Contract Price added by This Amendment 

            	
              U.S.$11,025,446.-

            
	
              The
                total Contract Price of the date 

            	
              U.S.$26,025,446.-

            
	
              The
                Down Payment Amount of the above 

            	
              U.S.$7,807,633.-

            
	
              Less
                The Down Payment already paid 

            	
              U.S.$4,500,000.-

            
	
              The
                Down Payment to be paid by This Amendment 

            	
              U.S.$3,307,633.-

            


    

     

    
      	
              3.

            	
              As
                the result of the above 1. amendment, ACL shall additionally submit
                a
                bank

            
	 	
              guarantee
                of U.S.$1,102,544.- to YZN within two weeks of This Amendment
                

            
	 	
              according
                to Article 11. of 2nd
                P/C.

            
	
              4.

            	
              The
                Shipment of Products added by This AMENDMENT shall be made by
                20th
                May, 2006.

            
	
              5.

            	
              ACL
                shall make its best efforts to review and improve Enclosure design
                of SDR
                for the cost reduction and, if affirmative, ACL will propose the
                revised
                Unit Price of Enclosure of SDR.

            


    

    


    In
      witness whereof, each party of the parties hereto has caused This Amendment
      to
      be Executed,
      in duplicate, each duplicate of which shall be considered as original, by its
      duly
      authorized officers or representatives.

     

     

     

    
      	YOZAN INC.	 	
              AIRSPAN
                COMMUNICATIONS LTD. 

            	 
	 	 	 	 
	(SIGNED)	 	(SIGNED)	 
	 	 	 	 
	 	 	 	 
	By Sunao Takatori, 	 	By Henrik Smith-petersen	 
	President and CEO	 	President, Asia Pacific