ACC SUCCESSFULLY PASSES AT&T'S INTEROPERABILITY TESTING

Santa Barbara, Calif. (May 28, 1996) -- Advanced Computer Communications,
Inc. (ACC), a leading provider of network access solutions for the home,
office, and enterprise, announced today that it's Danube, Nile, and Amazon
routers have successfully completed and passed interoperability testing
with AT&T's Global Switched Digital Services.

The interoperability testing, which was coordinated through AT&T's
Developmental Relations Group (DRG), was conducted at the AT&T
Laboratories test facility in Holmdel, New Jersey. Specifically, the
Danube and Nile allow remote LANs to be connected over ISDN Basic Rate
interface lines at 56 Kbps to 128 Kbps. The Amazon provides connectivity
over an ISDN Primary Rate interface line up to 1.472 Mbps. Overall, the
routers passed all interoperability tests performed in bridge and router
modes using IP and Netware protocols. All three units were found to
successfully support PAP and CHAP authentication security features.

"Passing AT&T's interoperability testing is extremely important for ACC
clients," said Tom Goodwin, Senior Vice President of Sales, Marketing, and
Service for ACC. "It proves that the company offers a viable solution for
remote LAN connectivity applications. Our clients can be assured a highly
reliable ISDN internetworking solution."

About AT&T's Interoperability Testing A determination by AT&T that a
manufacturer's product is interoperable with an AT&T service means that a
unit of the product and/or application, specifically identified by design
or model number, was submitted for testing by AT&T as a representative of
all units of the same design or model line.

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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