U.S. ROBOTICS ANNOUNCES THE ENTERPRISE NETWORK HUB AND TRANSACTION
PROCESSING HUB 

Products Integrate Networking into One Centrally Managed Chassis;
Transaction Processing Reduced by 32 Percent

SKOKIE, Ill., -- June 7, 1993 -- U.S. Robotics, Inc., today announced two
new internetworking products that solve the problems of network
integration by combining X.25 PADs, modems, terminal servers, CSU/DSUs,
and network interfaces into one centrally managed chassis, and reducing
transaction verification times. The products, the Enterprise Network Hub
and the Transaction Processing Hub, use a common architecture and are the
first products in an evolutionary product line targeted to specific
vertical markets. Both products will ship in June, 1993.

A complete, one-vendor solution, the Enterprise Network Hub enables
organizations with remote locations to aggregate their dial traffic onto
Tl lines and route it through a packetswitched network to their host
computer at a central site.

The Transaction Processing Hub interfaces with the local exchange carriers'
services, including Feature Group B, D and 800 lines, routing traffic via
T1 trunks to LAN interfaces for transaction processing applications, such
as credit card, point-of-sale, and inquiry/response.

A Logical Extension of the Company's Total Control Product Line These two
new products represent U.S. Robotics most recent offerings in the
internetworking market and are a logical extension of the company's Total
Control product line. U.S. Robotics' Total Control line of intelligent
management systems, introduced in 1990, was the company's first entry into
this market. Total Control is used by leading corporations such as DuPont,
Maxus Energy Corp., and Best Western International for remote dial-up
access to host-based applications. Additionally, U.S. Robotics has
exhibited its strengths in the remote LAN access market with its Shared
Access line; products include the Communication Server 386, LAN modem and
the Modem Sharing Kits.

"With analog lines still dominating the communications network and demand
for digital lines exploding, the need for a product that integrates and
manages both communication modes became obvious," said Casey Cowell, U.S.
Robotics chairman, CEO and president. "Additionally, networks have become
increasingly difficult to support and control because of the many devices
needed to keep them working with the current technologies. With the two
new products, we have reduced the number of devices, centralized
management, and decreased transaction verification times."

Enterprise Network Hub 

The Enterprise Network Hub preserves an organization's investment by
allowing both current analog and future digital services such as Switched
56, ISDN, and SMDS to be integrated and managed in the same chassis.

"Given the quality required from our customers for high speed, error-free
data transmission, products like the Enterprise Network Hub that provide a
migration path from the asynchronous world to the synchronous world have
an excellent opportunity to meet today's exploding market demands," said
Edsel Garciamendez Budar, director of network planning for BT North
America, Inc.

Transaction Processing Hub 

In tests conducted by a leading transaction processing company, the
Transaction Processing Hub reduced transaction verification times by 32
percent to 7.5 seconds from 11 seconds. Local exchange carriers and
transaction services companies complete an average of 1 million
transactions a day, with peak times reaching up to 2 million. By
decreasing transaction times, the capacity of the network is increased,
and more transactions can be completed.

The Transaction Processing Hub also meets the needs of the Regional Bell
Operating Companies (RBOCs) who agreed last year to provide uniform
transaction processing capabilities under a banner called Transaction
Switching and Transport Services (TSTS).

Bill Fitzpatrick, product development manager for Ameritech's TSTS services
said, "This type of equipment will support our customers by reducing their
costs, improving customer service, and giving their users a competitive
edge. With more and more people using credit and debit cards, in this
fast-paced world, delays in waiting for authorizations are not
tolerable."

Future Phases Include X.25, Frame Relay 

Future phases of the Enterprise Network Hub and the Transaction Processing
Hub will incorporate packet-switched network interfaces such as X.25 and
Frame Relay, Token Ring and Ethernet LAN interfaces, high-speed ISDN and
the ITU-TS (formerly CCITT) V.fast modem protocol, all managed by a common
SNMP network management system.

Product Architecture Based on USR Migration 

Both the Enterprise Network Hub and the Transaction Processing Hub arise
from a natural evolution of U.S. Robotics' proprietary Digital Signal
Processing (DSP) technology pioneered in U.S. Robotics' Courier modem. The
new hub products' architecture consists of a 1 Gbps backplane, and circuit
and packet-switched buses to minimize processing time. Through
downloadable software-defined technology, U. S. Robotics can easily modify
and enhance its products to take advantage of new and emerging
technologies. The ability to connect a variety of local area protocols and
remote users to public network services can be defined by both software
control and additions of network interface cards.

Pricing will depend on the configuration and number of interfaces and
ports. The Enterprise Network Hub and Transaction Processing Hub will
range in price from $25,000 to $60,000 per chassis.

Based on research from Insight Research Corp., the internetworking market
will grow to $2 billion in 1996, from $800 million today.

U.S. Robotics, Inc., (NASDAQ:USRX), is a leading designer, manufacturer and
marketer of data communications systems and products. Both corporate
headquarters and manufacturing operations are based in Skokie, Illinois.
U.S. Robotics owns and operates U.S. Robotics Ltd. in Slough, England,
U.S. Robotics, s.a. in Lille, France and P.N.B., s.a. based in Suresnes,
France. The company markets its products to business, industry, government
agencies and original equipment manufacturers.

U.S. Robotics, 8100 North McCormick Blvd, Skokie, IL 60076
800-DIAL-USR;  708-982-5010

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