NEW ISDN MODEM SOARS TO RECORD PERFORMANCE HEIGHTS

V.42bis Compression Ensures Optimum Throughput

LAS VEGAS, Mar. 28, 1995 -- ZyXEL, the leading supplier of high performance
modem and data communications products, today unveiled the industry's
first family of ISDN modems to provide ISDN and V.34 transmission
capabilities in a single device. The ZyXEL Elite Series ISDN modems will
make their debut at Networld + Interop '95 in booth #938.

Setting the pace in ISDN modem performance, the ZyXEL Elite Series of ISDN
modems offer features not previously available in a single product. The
company has redefined modem communications by combining advanced ISDN
technology with V.34 capabilities and an extensive array of analog
features to provide users with a high-performance, multi-functional
product.

The Elite Series ISDN modems outperform similar products in the industry
with the ability to bundle two B Channels for up to 128Kbps and higher
with V.42bis compression.

An analog adapter enables users to maintain telephone, fax or modem
connections for simultaneous analog and digital transmission.

The modems are compatible with NI-1, AT&T 5ESS, Northern Telecom DMS100,
1TR6 and EDSSI; rate adaption ITU-TV.120, V.110 and X.75 SLP.

Designed as a universal communications platform, the Elite Series ISDN
modems provide ISDN access without sacrificing connectivity to analog
telephone lines. A key feature of the modems is the ability to
automatically switch between an ISDN data call and a modem data call for
an incoming transmission via fax machine/voice without user intervention.

The new modems operate in a wide range of environments including DOS,
Windows, OS/2, Macintosh, UNIX, Novell, Amiga and IBM AS400/RS6000.

"We are committed to meeting the needs of the growing number of users who
require ISDN technology, whether they want to start with a dedicated ISDN
device or upgrade from analog to ISDN, as well as those who want ISDN
access without sacrificing analog capabilities. Elite Series modems
provide a comprehensive communications solution by bridging the worlds of
digital and analog, giving users the best of both environments while
providing the high performance required to meet the most demanding
applications, " stated Munira Brooks, marketing manager.

Applications on Demand

The new generation modem family allows ISDN's two 64Kbps B Channels to be
combined for 128Kbps. ZyXEL is the first manufacturer to implement V.42bis
data compression, enabling the modems to achieve even higher speed for
greater performance.

A wide range of applications are facilitated with the new modem's
multi-line digital and analog communications capabilities. Traditionally,
users had one telephone line that could be used for a single purpose. With
an ISDN line and the ZyXEL ISDN modem, users have two B channels for
communication. For example, one B Channel can be used for ISDN,
transmitting information at 64Kbps and another B Channel is transmitting
analog data at up to 28.8Kbps simultaneously.

"Because they offer both analog and digital, our new Elite Series ISDN
modems are ideal tools for the home office market where users need
versatile communications solutions," explained Brooks.

Additional applications for the new ISDN modems include creating networks
between LANs, remote dial-in access for branch offices and high-speed
Internet access.

From Net surfers looking for practical Internet access, to the growing
telecommuter market, the high performance of ISDN lines is essential.

"The popularity of the Internet is much more than the latest trend -- it's
a communications necessity that's here to stay. We are committed to
helping users by developing solutions that are reliable and adhere to the
highest standards of interoperability," said Brooks.

Feature Set Raises Ante -- Fax, Voice, Cellular

The ZyXEL Elite Series incorporates a full range of features along with its
core ISDN/V.34 modem capabilities.

The high speed serial/parallel port with serial DTE interface supports
speeds up to 460.8Kbps. The parallel port connects to a standard
bi-directional PC parallel port for maximum speed data transfers. For
automatic incoming fax receiving, users may also connect the parallel port
to a printer.

Elite Series modems are bundled with ZyXEL ZFAX data/fax/voice software,
providing features such as fax on demand, call forwarding, call transfer,
remote message retrieval and security code protection. The ZFAX DOS
software supports up to 1000 data, fax and voice mailboxes -- all on one
phone line. Elite Series modems are also available bundled with Macintosh
and Windows software.

Rounding out the extensive array of features of ZyXEL modems are ADPCM
voice digitization with speech compression, 4MB flash EPROM memory for
easy upgrades, automatic data/fax/voice call detection, computer
telephony, call-back security with password protection,
asynchronous/synchronous modes, caller ID, distinctive ring, fast retrain
with auto fall-forward/fall-back, remote configuration capability and
ZyCellular, the consistently top-ranked protocol for cellular network
data/fax transmissions from ZyXEL. Optional 8MB DRAM for standalone fax
receiving and storage is also available.

In addition to V.34, the Elite Series modem family supports V.32bis and
V.32. ZyXEL V.34 modems also incorporate ZyXEL 19.2Kbps and 16.8Kbps modes
for proprietary speed connections with other ZyXEL ultra high speed
modems.

Elite Series modems are backed by a five-year warranty on parts and
service, technical assistance and a 24-hour BBS technical support line.

Availability and Pricing

The Elite Series product line includes the Elite 28641-U, which features an
NT-1 interface and is priced at $749; the Elite 28641-S/T, priced at $699;
the Elite 2864L, priced at $649; and the Elite 2864, priced at $549.
Accessories are priced from $99 for the Analog Module to $249 for the
ISDN-U Module.

Company Background

ZyXEL, headquartered in Anaheim, California, is a leading supplier of
highspeed modems and compatible data communication products. Since its
inception, ZyXEL has built a reputation as the price/performance leader in
modems by providing high-quality products at affordable prices.

ZyXEL
4920 E. La Palma Ave
Anaheim, CA 92807
714-693-0808,  fax 714-693-8811,  BBS 714-693-0762
URL: http://www.zyxel.com

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