Document:

ex_10-18.htm

    
      EXHIBIT
10.18

      AMENDMENT
TO REVOLVING CREDIT PROMISSORY NOTE (LIBOR/PRIME)

      (Avistar
Communications Corporation)

      

      Amendment dated as of December 17, 2007
(this “Amendment”) to that
certain Revolving Credit Promissory Note dated as of December 23, 2006, by
Avistar Communications Corporation, a Delaware corporation (the “Borrower”), to the
order of JPMorgan Chase Bank, N.A. (the “Bank”), in the
maximum principal amount of $10,000,000 (the “Note”).

      

      For value received, the parties hereto
hereby agree as follows:

      

      
        	
                1.  

              	
                Section
      1 of the Note is hereby amended by adding the following definitions
      thereto:

              

      

      

      “”Collateral
Agreement” means the Collateral Agreement dated the date hereof by the Guarantor
in favor of the Bank securing, among other things, the Guarantor’s obligations
to the Bank under the Guaranty, as amended from time to time.

      

      “Guarantor”
means (i) Gerald J. Burnett and (ii) Gerald J. Burnett and Marjorie J.
Burnett as Trustees for The Gerald J. Burnett and Marjorie J. Burnett Revocable
Trust.

      

      ”Guaranty”
means the Guaranty dated the date hereof by the Guarantor in favor of the Bank
guarantying, among other things, the Borrower’s obligations to the Bank under
this Note, as amended from time to time.

      

      “Security
Agreement” shall mean the Security Agreement dated the date hereof by the
Borrower in favor of the Bank securing, among other things, the Borrower’s
obligations to the Bank under this Note, as amended from time to
time.”

      

      
        	
                2.  

              	
                The
      definition of “Facility Documents” in Section 1 of the Note is hereby
      amended by adding the following to the end
      thereof:  “(including, without limitation, the Collateral
      Agreement, the Guaranty and the Security
  Agreement)”.

              

      

      

      
        	
                3.  

              	
                The
      address for notices to the Borrower set forth on the notary page of the
      Note is hereby deleted and the following is hereby inserted in lieu
      thereof:

              

      

      

      Attn:  Robert
Habig

      Avistar Communications
Corporation

      875 S. Grant Street, 10th
Floor

      San Mateo, CA 94402

      Telecopier:  (650)
525-1360

      Telephone:  (650)
525-3310

      

      
        	
                4.  

              	
                The
      Note, as amended by this Amendment, remains in full force and
      effect.

              

      

      

      
        	
                5.  

              	
                This
      Amendment shall be governed by and construed in accordance with the laws
      of the State of New York, without regard to conflicts of laws
      principles.

              

      

      

      
        	
                6.  

              	
                This
      Amendment may be executed in any number of counterparts and by different
      parties hereto in separate counterparts, each of which shall be deemed to
      be an original, but all of which taken together shall constitute one in
      the same instrument.

              

      

      

      IN
WITNESS WHEREOF, the parties have caused this Amendment to be duly executed and
delivered as of the date first above written.

      

      
        JPMorgan
Chase Bank, N.A.

        By:           J.P.
Morgan Trust Company, N.A.

        

        

        

        By:      /s/
Nancy A.
Sheppard                                                

                    Nancy
A. Sheppard

                    Managing
Director

        

        

        Avistar
Communications Corporation

        

        

        

        By:           /s/ Robert J.
Habig

          
            

          

          Name: Robert J. Habig

          Title: Chief Financial Officer 

        

        

        By:          /s/ Simon
B. Moss

          
            

          

          Name: Simon B. Moss

          Title: President 

      
        	
                State
      of _________

              	
                )

              

      

      ) ss.:

      
        	
                County
      of ________

              	
                )

              

      

      

      On the ____ day of December in the year
2007, before me, the undersigned, personally appeared ______________________,
personally known to me or proved to me on the basis of satisfactory evidence to
be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that
by his/her signature on the instrument, the individual, or the person upon
behalf of which the individual acted, executed the instrument.

      

      

      ____________________________________

      Notary Public

      

      

      
        	
                State
      of _________

              	
                )

              

      

      ) ss.:

      
        	
                County
      of ________

              	
                )

              

      

      

      On the ____ day of December in the year
2007, before me, the undersigned, personally appeared ______________________,
personally known to me or proved to me on the basis of satisfactory evidence to
be the individual whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her capacity, and that
by his/her signature on the instrument, the individual, or the person upon
behalf of which the individual acted, executed the instrument.

      

      

      ____________________________________

      Notary Public

      
        
           

        

        
           

          
            

          

        

        
           

        

      

bex_10-19.htm

    EXHIBIT
10.19

    SECOND
AMENDMENT TO REVOLVING CREDIT PROMISSORY NOTE (LIBOR/PRIME)

    (Avistar
Communications Corporation)

    

    Second Amendment dated as of December
17, 2007 (this “Amendment”) to that
certain Revolving Credit Promissory Note dated as of December 23, 2006, as
amended, by Avistar Communications Corporation, a Delaware corporation (the
“Borrower”), to
the order of JPMorgan Chase Bank, N.A. (the “Bank”), in the
maximum principal amount of $10,000,000 (the “Note”).

    

    For value received, the parties hereto
hereby agree as follows:

    

    
      	
              1.  

            	
              The
      first unnumbered paragraph of the Note is hereby amended by deleting
      therefrom the words “first anniversary” and inserting in lieu thereof the
      words “second anniversary”.

            

    

    

    
      	
              2.  

            	
              This
      Amendment shall become effective
upon:

            

    

    

    
      	
              a.  

            	
              The
      Borrower’s payment to the Bank’s counsel’s fees and expenses of $2,247.50;
      and

            

    

    

    
      	
              b.  

            	
              The
      Bank’s receipt of a financial statement from the Guarantor dated on or
      about December 7, 2007, substantially in the form of the “Financial
      Statement” (as defined in the
Guaranty).

            

    

    

    
      	
              3.  

            	
              The
      Note, as amended by this Amendment, remains in full force and
      effect.

            

    

    

    
      	
              4.  

            	
              This
      Amendment shall be governed by and construed in accordance with the laws
      of the State of New York, without regard to conflicts of laws
      principles.

            

    

    

    
      	
              5.  

            	
              This
      Amendment may be executed in any number of counterparts and by different
      parties hereto in separate counterparts, each of which shall be deemed to
      be an original, but all of which taken together shall constitute one in
      the same instrument.

            

    

    

    IN
WITNESS WHEREOF, the parties have caused this Amendment to be duly executed and
delivered as of the date first above written.

    

    JPMorgan
Chase Bank, N.A.

    By:           J.P.
Morgan Trust Company, N.A.

    

    

    

    By:       /s/
Nancy A.
Sheppard                                               

                Nancy
A. Sheppard

                Managing
Director

    

    

    Avistar
Communications Corporation

    

    

    

    By:           /s/ Robert J.
Habig

      
        

      

      Name: Robert J. Habig

      Title: Chief Financial Officer 

    

    

    By:          /s/ Simon
B. Moss

      
        

      

      Name: Simon B. Moss

      Title: Presidentex_10-20.htm

    EXHIBIT
10.20

     

    AMENDMENT
TO GUARANTY

    

        Amendment
dated as of December 17, 2007 (this "Amendment:") to that certain Guaranty
dated as of Decmeber 23, 2006 (the "Guaranty" by Gerald J. Burnett and by
Gerald J. Burnett and Marjorie J. Burnett, as Trustees for The Gerald J. Burentt
and Marjorie J. Burnett Revocable Trust (collectively, the "Guarantor"), in favor of JPMorgan
Chase Bank, N.A. (the "Bank").

      

      For value received, the parties hereby
agree as follows:

      	
          
            Unless
  otherwise agreed in writing, notices may be given to the Bank and the
  Guarantor at their telecopier numbers (confirmed by telephone to their
  telephone numbers) or addresses listed below, or such other telecopier (and
  telephone) number or addresses communicated in writing by either party to
  the other.  Notices to the Bank are effective on
  receipt.

          

        
	
          
            Notwithstanding
  anything to the contrary set forth herein, for purpose of this Guaranty the
  Facilities of the Borrower guaranteed shall be limited to those arisign under
  and in connection with the Revolving Promissory Note (Libor/Prime) dated as of
  December 23, 2006 by the Borrower in favor of the Bank in the maximum
  principal amount of $10,000,000, as amended from time to time (the "Note") or
  any other "Facility Document" (as defined in the Note), together with every
  renewal, extension, amendment, modification, substitution and /or replacement
  thereof, each of which together with this Guaranty and any other writing or
  record evidencing, supporting, securing or delivered in connnection with the
  foregoing shall be considered a Ficility Document for purposes of this
  Guaranty.

          

        
	
          
            Clause
  (b) of the second sentence of the paragraph of the Guaranty titled "Guaranty
  Absolute" is hereby ameded by inserting the words "(any change in the value of
  any collateral or failure of the Bank to monitor the value of any collateral)"
  immediately following the words "release or non-perfection of any
  collateral".

          

        
	
          
            The
  Guaranty, as amended by this Amendment, remains in full force and
  effect.

          

        
	
          
            The
  Amendment shall be governed by and construed in accordance with the laws of
  the State of New York, without regard to conflicts of lawsa
  principles.

          

        
	
          
            This
  Amendment may be executed in any number of counterparts and by different
  parties hereto in separate counterparts, each of which shall be deemed to be
  an original, but all of which taken together shall constitute one in the same
  instrument.

              IN
  WITNESS WHEREOF, the parties have caused this Amendment to be duly executed
  and delivered as of the date first above written.

              

              JPMorgan
  Chase Bank, N.A.

              By:           J.P.
  Morgan Trust Company, N.A.

              

              

              

              By:       /s/
  Nancy A.
  Sheppard                                               

                          Nancy
  A. Sheppard

                          Managing
  Director

              Address
  for notices to the Bank:

              

              JPMorgan
  Chase Bank, N.A.

              Private
  Bank Credit

              Attn: Patricia
  DeLeo

              345
  Park Avenue, Floor 04

              New
  York, NY 10154-0004

              Telecopier:  (212)
  464-2531

              Telephone:  (212)
  464-1883

              

              With a
  courtesy copy to

              

              JPMorgan
  Chase Bank, N.A.

              Attn:  Nancy
  A. Sheppard

              560
  Mission Street, 12th floor

              San
  Francisco, CA 94105

              Telecopier:  415
  315 8272

              Telephone:  415
  315 8285

              
                

                
/s/ Gerald J.
  Burnett

              

              Gerald
  J. Burnett

              

              Address for
  notices:

              
                202
  Camino  Al Lago

                Atherton,
  CA 94027

                Telecopier:  650.322.2060

                Telephone: 650.322.2060

              

              

                

                Gerald J. Burnett and Marjorie
  J. Burnett, as Trustee for The Gerald J. Burnett and Marjorie J. Burnett
  Revocable Trust

                

                  

                               /s/
  Gerald J. Burnett
By:       Gerald J.
  Burnett

                

                               

                
                              
  /s/ Marjorie J. Burnett
By:      Marjorie J.
  Burnett                                               

                

                                      
  

                  Address
  for notices:

                  

                  
                    202
  Camino  Al Lago

                    Atherton,
  CA 94027

                    Telecopier:  650.322.2060

                    Telephone: 650.322.2060

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