ACC ACES THE TOLLY GROUP'S ISDN TECHNOLOGY TESTS

ACC's Congo, Danube, Colorado, and Amazon ISDN routers are put to the test
and the results speak for themselves

Santa Barbara, Calif. (April 30, 1996) -- Advanced Computer Communications,
Inc. (ACC), a leading provider of network access solutions for the home,
office, and enterprise, today announced the test results of The Tolly
Group's ISDN Technology Trial. ACC products were tested in scenarios for
ISDN basic Dial-on-Demand connectivity, leased line and Frame Relay link
backup, bandwidth aggregation, performance, spoofing, and remote user
dial-in. ACC's Congo, Danube, Colorado, and Amazon were evaluated.

Results indicate that the ACC products tested offer a rich and powerful
ISDN feature set. They employ sophisticated backup and recovery systems
for Leased Line and Frame Relay installations. The backup mechanisms were
proven to respond automatically to failures and minimize network downtime
while remaining transparent to the end user and network manager.

Also, ACC's products offer bandwidth conservation through strong Data
Compression and multiple spoofing algorithms. These algorithms are
effective in significantly reducing ISDN link charges, an important
consideration for any network.

"The Tolly Group has long recognized the importance of Data Compression as
a router feature. It is like getting bandwidth for free," commented Kevin
Tolly, president and CEO of The Tolly Group. "These tests show that ACC's
products can compress data streams by a factor of more than 4.72 to 1
across ISDN."

"Being awarded The Tolly Group's "Up-to-Spec" verification for ISDN
performance proves that ACC has a robust ISDN product suite fit for
real-world applications," said Bert Whyte, president and CEO of ACC. "The
ACC products involved in the trial were put through rigorous tests and the
results speak for themselves -- ACC delivers ISDN."

Test Highlights

ACC's products demonstrate two vital and powerful ISDN features: bandwidth
aggregation and Dial-on-Demand. The combination of these two functions
offer a speedy mechanism for procuring bandwidth in times of high network
activity.

The Amazon and Danube routers displayed Data Compression of up to 4.72 to 1
across a single 64 Kbps ISDN B channel and up to 4.27 to 1 across dual B
channels. The routers also showed sophisticated backup and recovery
systems for Leased Line and Frame Relay installations.

Congo, Danube, Colorado, and Amazon also offer rich protocol support: Data
Link Switching for NetBIOS traffic, IP routing, IPX routing, and bridging
were all tested without failure. In the arena of remote access, ACC was
shown to provide cost-effective and easy-to-use solutions for end users.

ISDN Technology Trial

This study is focused on demonstrating ISDN as a technology solution and
examined how ISDN integrates with existing corporate networks. The goal of
this project is to provide unbiased, third-party evaluations of ISDN
products. This technology trial provides objective, real- world case
studies of ISDN integration into the enterprise and shows multivendor
implementations. This study is not intended to be a head-to-head,
competitive evaluation of like products.

About The Tolly Group

The Tolly Group, a strategic consulting and independent testing
organization, offers a full range of services designed to furnish both the
vendor and end-user communities with authoritative and unbiased
information. Fortune 1000 companies look to The Tolly Group for
vendor-independent assessments of critical corporate technologies. Leading
manufacturers of computer and communications products engage The Tolly
Group to test both pre-production and production equipment.

Results of the ISDN Technology Trial can be found on The Tolly Group's
World Wide Web site at http://www.tolly.com.

About ACC

ACC is a leading manufacturer of network access products that provide
cost-effective solutions for the home, office, and enterprise. ACC leads
the industry in the development of Bandwidth Optimization technologies to
maximize the utilization of leased lines and switched services. ACC's
products are sold worldwide through 80 leading international VARs and OEMs
serving corporate and business customers, educational institutions, health
care, retail establishments, governments, and PTTs.

ADVANCED COMPUTER COMMUNICATIONS
340 STORKE ROAD
SANTA BARBARA, CA 93117

TOLL FREE 1-800-444-7854
CUSTOMER SERVICE: 1-800-666-7308
PHONE: 1-805-685-4455
FAX: 1-805-685-4465
E-MAIL: info@acc.com
 
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