InVision Systems Delivers Industry's First Codec-Independent, Network-Based
Desktop Video Conferencing Software Suite

Video/Audio and Document Conferencing Software Suite Compatible with Range
of Codec Boards; Ensures Interoperability between Users

June 22, 1994 -- Vienna, VA -- InVision Systems Corp., a pioneer in the
desktop video conferencing industry, today announced the availability of
InVision 3.0, the industry's first Codec-independent, network-based
desktop video/audio and document conferencing system for Windows PCs.
InVision 3.0 is compatible with Microsoft's Video for Windows, allowing
users to choose from a wide and growing range of Codec boards to establish
video conferencing connections with other InVision users -- regardless of
the Codec they have installed.

"Adding Codec-independence and Video for Windows compatibility to our
network based software is a breakthrough for the desktop video and
document conferencing market," said James J. Geddes, Jr., President and
CEO of InVision Systems Corporation. "InVision gives users freedom of
choice over hardware, interoperability among different desktops and a
smooth growth path for the future. For example, there have been a number
of powerful, cost-effective Codec boards introduced recently that are
gaining broad acceptance -- for both video conferencing and multimedia
applications. With InVision 3.0, users can choose the board that is right
for all of their digital video needs, and know that their video
conferencing system will interoperate with other InVision users."

InVision allows users to select the Codec price-performance points that are
appropriate for their applications; prices typically range between
$250-$699 For example, because InVision 3.0 supports the Intel Smart Video
Recorder, existing Intel ProShare users can now do Desktop Video
Conferencing over their LAN/WAN infrastructure. A complete list of
InVision 3.0 compatible Codecs is attached to this press release. In
addition, Codec independence provides users with the flexibility to adapt
to future changes in compression technology. As new Codec algorithms and
boards become available, they can be easily integrated with InVision.
Video for Windows compatibility ensures that InVision 3.0 will work with
the wide range of cost-effective, shrink-wrap multimedia products such as
cameras, microphones and speakers.

InVision is the industry's first network-based video conferencing system to
operate on today's desktop computers, LAN network topologies and protocols
and wide-area connectivity services. Connectivity between users is
provided through existing network topologies, including Ethernet, Token
Ring and FDDI; network protocols, including TCP/IP and IPX; and wide area
connectivity Options, including T1 and Fractional T1, ISDN, Frame Relay
and ATM. Unlike systems that are based on discrete wide-area telephone
connections, InVision makes video conferencing readily available to every
user on the local area network.

"We have been waiting for a desktop video and document conferencing system
that takes advantage of our existing computing and network resources,"
said John Gillespie, Information Systems Manager, at Williams Pipeline
Company. "With breakthrough network utilization efficiency and the ability
to control the bandwidth requirements of the video conferencing system,
InVision 3.0 allows us to deploy video and document conferencing on our
existing shared and switched LAN environment, rather than wait for new
networking technologies to arrive. InVision 3.0 makes the impact and
efficiency of video conferencing available to a much wider audience of
users."

In order to address the network bandwidth requirements typically associated
with desktop video conferencing, InVision provides user configurable
control over the network bandwidth required for the conferencing session.
Video quality can be set from one to twenty frames per second, while
bandwidth can be set from 5GKbps to 512Kbps.

"InVision is the first company to really get it," said Paul Callahan,
Senior Analyst with Forrester Research. "At the desktop, video
conferencing has to rely on PC LAN technology as the distribution
mechanism. It is not an easy problem to solve, but that is the reality."

The InVision 3.0 Suite also incorporates VisionGraphics, an innovative
interactive document conferencing system that enables multiple users to
annotate and comment on shared documents and files. OLE support lets users
revise and redisplay original documents mid-conference. Using a wide range
of tools, including a freehand pencil, color markers, arrows, pointers and
text editor, users can e(lit and annotate documents simultaneously. Beyond
the LAN/WAN, VisionGraphics allows users to establish document only
conferencing connections using a standard telephone modem.

Product Pricing and Availability

InVision 3.0 is available now from InVision Systems Corp. List price for
the software suite, including the VisionGraphics document conferencing
software, is $595.00.

About InVision Systems Corp.

InVision Systems Corp. was established in 1992 to develop innovative video
conferencing solutions for desktop computer systems. The company has a
solid customer base which is growing rapidly as more users recognize the
benefits of cost-effective LAN based video conferencing. Customers include
SmithKline Beecham, Boeing, AT&T, Computer Science Corporation, US Connect
and Citibank. InVision Systems Corp. works with a number of strategic
partners including 3Com, Synoptics, MFS Datanet, Kalpana, ALANTEC, Lalmet
Data Communications, Optical Data Systems and Cascade Communications. The
company is located at 8500 Leesburg Pike, Suite 300, Vienna, VA 22182.
(703) 506-0094.
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Network-Based Desktop Video/Audio and Document Conferencing

Features and Benefits Summary

Codec Independence/Video For Windows Compatibility InVision 3.0 is a
software-only package that works with a wide range of compression
technologies. Support is currently provided for a number of popular Codec
boards, including Smart Video Recorder and ActionMedia II by IBM/Intel,
Mambo and Mambo-DT by MediaShare, Pro Movie Studio by MediaVision,
MegaMotion by ASL, Video Star Pro by Diamond Computer Systems, VideoIt!
and Video Wonder by ATI, MovieMan by Logitech, and Xingit! by Xing
Technologies. Support for additional algorithm standards such as the ITU
H.320 and H.2G1 will be available this October (1994). Codec independence
allows users to select the hardware that provides the price-performance
point that is appropriate for each application. As Codec technology and
standards evolve, InVision customers will be able migrate to new products
in order to take advantage of new technologies.

Video for Windows compatibility enables InVision users to seamlessly
establish video/audio conferencing connections with other InVision users
on the network, regardless of the Codec they are using. Video for Windows
compatibility also allows InVision users to take advantage of widely
available, shrink-wrapped products such as cameras, microphone and sound
boards.

Leverages Existing Computing and Connectivity Infrastructure

InVision 3.0 Software Suite is the industry's first network-based desktop
video/audio/document conferencing system that operates on today's desktop
computers, existing LAN network topologies and protocols and wide area
connectivity options. Unlike video conferencing systems which can only
create discrete one-on-one connections using digital telephone lines,
InVision is not limited by the number of telephone lines deployed in the
enterprise. Document and video conferencing capability is provided over
the existing shared and switched LAN infrastructure, which reaches
throughout the organization. InVision 3.0 is compatible with the Ethernet,
Token Ring and FDDI topologies, as well as the widely deployed TCP/IP and
IPX protocols. Connection between different LAN environments is provided
through existing wide area technologies, such as Tl, Fractional Tl and
ISDN. InVision is also compatible with emerging high-performance
networking standards, such as Frame Relay and ATM. Document-only
conferencing can be run over standard telephone lines using a modem.

VisionGraphics -- Integrated Document Conferencing Software InVision 3.0
comes standard with interactive document sharing software and includes OLE
support, which allows multiple users to collaborate on the same documents
and files. With VisionGraphics Document Conferencing, users can all view
the document under discussion. Electronic tools, such as a freehand
pencil, color markers, arrows, pointers, circles, rectangles, a text
editor and an eraser, allow members of the conference to mark the document
as they discuss it. Because the data transfer demands of document
conferencing are less than those of real-time audio and video
conferencing, users are able to control the amount of network bandwidth
they require, by switching from video to document conferencing during a
single session. Alternatively, document and video conferencing can be used
simultaneously for maximum interaction and efficiency.

Configurable Bandwidth Requirements

With the rapid acceptance, low cost and limited network disruption provided
by LAN switching, the availability of LAN bandwidth on today's networking
is growing at a substantial rate. Still, managing the bandwidth
requirement of video conferencing is an important capability. InVision 3.0
allows users to easily define the quality of their conferencing audio and
video and the corresponding bandwidth the session requires on the network.
Video frame rates, which control the smoothness of the images presented in
the video screen, can be set from one to 20 frames per second. At the same
time, the bandwidth required to deliver the video and document
conferencing session can be also be configured by the user from 5GKbps to
512Kbps. The ability to control bandwidth requirements allows users to
deploy video and document conferencing over existing network
infrastructures, manage how the software executes over the network and
control access charges for wide area connections.

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