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EXHIBIT A
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(k) under the Securities Exchange Act of
1934, as amended, the undersigned, for good and valuable consideration, hereby
agree to the joint filing with all other Reporting Persons (as such term is
defined in the Schedule 13D referred to below) on behalf of each of them of a
statement on Schedule 13D (including amendments thereto) with respect to the
Common Stock, par value $0.001 per share, of Avistar Communications Corporation
and that this Agreement be included as an Exhibit to such joint filing. This
Agreement may be executed in any number of counterparts all of which taken
together shall constitute one and the same instrument.
IN WITNESS WHEREOF, the undersigned hereby execute this Agreement this
31st day of August, 2000.
/s/ Gerald J. Burnett
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Gerald J. Burnett
/s/ R. Stephen Heinrichs
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R. Stephen Heinrichs
TRUST FOR THE BENEFIT OF GERALD J. AND
MARJORIE J. BURNETT
/s/ Gerald J. Burnett
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Gerald J. Burnett, Trustee
