THE END TO MODEM MARKET CONFUSION: U.S. ROBOTICS OFFERS FOUR NEW MODEMS
SUPPORTING EVERY PROTOCOL

New Courier Modems Include V.32 terbo, V.Fast Class, Free FLASH ROM Upgrade
to ITU-T V.34 Standard

SKOKIE, Ill., February 28, 1994 -- U.S. Robotics, Inc. (NASDAQ:USRX) today
announced four new modems in its Courier modem line. The modems are the
first and only to support all three major high-speed protocols: AT&T's
V.32 terbo (19.2 Kbps); Rockwell's V.Fast Class (28.8 Kbps); and V.34, the
forthcoming ITU-T standard for 28.8 Kbps. The new modems are the only
products to provide universal compatibility with any modem at the highest
speed possible.

The V.34 protocol will be added to the new modems through a
user-downloadable software upgrade; the upgrade to V.34 is free. The
announcement comes on the heels of the ITU-T's completion of the V.34
draft, finalized during its February 14-15 meeting in Orlando, Fla.

"We're removing the burden on the consumer by making the choice of a
high-speed protocol a non-issue," said Jonathan Zakin, U.S. Robotics
executive vice president. "Because compatibility is important, the clear
choice is a modem that supports multiple protocols. A Courier modem
guarantees a connection at the highest speed possible, no matter what kind
of modem it's connecting to, ensuring the optimum savings of time and
money."

The products are based on a new Courier modem platform, which will be
available in six weeks. The new design is FLASH ROM-based, for
software-downloadable upgradability; upgrades to V.34 from this platform
will be available at no charge. Based on U.S. Robotics' proprietary,
DSP-based technology, this architecture provides the flexibility to
include multiple high-speed protocols. The products will be available
initially in the U. S. and Canada, and in country-specific versions for
Germany, Sweden, Norway, Finland and the United Kingdom, with others to
follow.

U.S. Robotics is conducting a large-scale field trial of the new platform,
which will involve extensive field testing by customers prior to the
products' actual shipment in mid-April. Field trials are scheduled to
begin March 15; there will be a wide range of participants, including U.S.
Robotics' major corporate customers.

V.34 Compatibility Key for Customer Base, High-Speed Applications

"Our corporate customers adopt products that support
internationally-recognized standards," added Zakin. "The new platform
gives them future compatibility with the ITU-T V.34 standard at no cost,
providing a software-downloadable upgrade that makes it easy for them to
implement V.34 as soon as possible."

"The new speeds open the door for new applications," continued Zakin.
"Dial-up is fast becoming an appealing alternative to services such as
Switched 56, often providing a more cost effective answer to corporate
connectivity needs. This is key for today's companies, who want to
optimize their return on investment. "

Modems Provide Extensive Feature, Protocol Support 

The company's announcement includes four new modems, which provide
extensive support for modem features and protocols. The new products are:


-- Courier V.Fast Class Fax 
-- Courier V.Fast Class Fax/PC 
-- Courier HST Dual Standard V.Fast Class Fax 
-- Courier HST Dual Standard V.Fast Class Fax/PC

Each new product includes:

-- V.32 terbo, the AT&T 19.2 Kbps protocol 
   (Courier-to-Courier operation at 21.6 Kbps)
-- V.Fast Class, the Rockwell proprietary protocol for 28.8 Kbps
-- V.17, the ITU-T fax protocol for 14.4 Kbps faxing
-- Free V.34 Upgrade, software-downloadable for international
   compatibility at 28.8 Kbps

The products will be available in external and internal versions, and
provide optional HST and HST Cellular capabilities. HST is the company's
proprietary protocol for 16.8 Kbps, providing compatibility with the
installed base of HST modems; HST Cellular, introduced last year, provides
high-speed cellular data transmission.

The new Courier modems also include several advanced features, including
Quick Connect, for shortened connect times, dial security, call selection,
remote configuration and V.25 bis, for synchronous environments. The
products will also include U.S. Robotics' proprietary Adaptive Speed
Leveling (ASL) for increased throughput on Courier-to-Courier
connections.

The products also provide ITU-T V.42 and V.42 bis error control and data
compression, as well as backward compatibility with V.32 bis, V.32 and
other standard modem protocols.

Courier Modem Architecture Key to Flexibility 

"Our architecture gives us a distinct advantage in this arena," said Zakin.
"It enables us to bring products to market quickly, and gives us the
flexibility to implement numerous high-speed protocols in a single
product."

The company has not yet announced pricing on these products; pricing will
be announced in April. U. S. Robotics will provide an upgrade path to the
new platform from previous products; most Courier V.32 bis and all Courier
V.32 terbo products are field upgradable via a daughterboard swap. Older
model Courier modems may be traded in through a program the company will
implement this spring.

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, and to end-users through
the personal computer distribution channel.

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

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