Mike Havrilla on AVSR - Avistar Communications Corp.

Avistar Communications (Nasdaq: AVSR), a provider of unified visual communications solutions, today announced that it will conduct a conference call at 1:00 pm Eastern time on September 17, 2008 to discuss the Company’s progress in relation to previously identified milestones, including the recently concluded technology licensing agreement with IBM Corporation.

To participate in the conference call, please dial toll-free 877. 681. 3374. Investors may also access a live audio webcast of this conference call through the Investor Relations section of the Company’s website.

Avistar creates technology that provides the missing critical element in unified communications: bringing people in organizations face-to-face, through enhanced communications, for true collaboration anytime, anyplace. Its latest product, Avistar C3, draws on over a decade of market experience to deliver a single-click desktop videoconferencing and collaboration experience that moves business communications into a new era. Available as a stand-alone solution, or integrated with existing unified communications software from other vendors, Avistar C3 users gain instant messaging-style ability to initiate video communications across and outside the enterprise. Patented bandwidth management enables thousands of users to access desktop videoconferencing, Voice over IP (VoIP) and streaming media, without requiring substantial new network investment or impairing network performance.

Avistar’s desktop videoconferencing and collaboration installations are among the world’s largest, including more than 18,000 seats sold in more than 40 countries. Clients report as much as a 20 percent reduction in travel expense and carbon emissions, increases in productivity, and immeasurably improved relationship building within their organizations, as well as with suppliers and customers. Avistar holds a portfolio of 83 patents for inventions in video and network technology and licenses IP to videoconferencing, rich-media services, public networking and related industries. Current licensees include IBM Corporation, Sony Corporation, Sony Computer Entertainment Inc. (SCEI), Polycom, Inc., Tandberg ASA, Radvision Ltd. LifeSize Communications, Inc., and Emblaze-VCON.

Press/Investor Contact: Bob Habig
Avistar Communications Corp.
+1 650.525.3310