OLICOM ANNOUNCES ATM LAN EMULATION PRODUCTS

Demonstrates legacy LAN running ATM via LAN Emulation

March 27, 1995, Copenhagen, Denmark - Olicom, a leading supplier of
high-performance networking products, today announced a LAN Emulation
software suite that allows customers to integrate Token-Ring and Ethernet
LANs with Asynchronous Transfer Mode (ATM) networks. The ATM LAN Emulation
software will be demonstrated this week at Olicom's booth at
NetWorld+Interop Las Vegas.

With Olicom's ATM LAN Emulation software, users can run existing network
operating systems and applications over the increased bandwidth of ATM,
giving a cost-effective stepping stone to full ATM network deployment.
Olicom's LAN Emulation software suite is an important part of Olicom's
plan to provide cost-effective, fully interoperable ATM solutions for the
next generation of networking products.

Olicom's ATM strategy, announced in May 1994, will include a complete
family of ATM adapters to be followed by several key ATM backbone
components. Olicom's 155 Mbps EISA adapter, introduced last year, was the
first standard PC-architectured ATM adapter available on the market. The
adapter is currently undergoing field tests and is available through the
Olicom ATM Adapter Evaluation Program. A complete family of Olicom ATM
adapters supporting several industry standard buses at 155 Mbps and 25
Mbps will be available later this year.

ATM integration with LAN Emulation

LAN Emulation is essential for the transparent integration of Token-Ring,
Ethernet and ATM into a unified network. LAN Emulation's purpose is to
enable LAN application to operate over ATM. To achieve this, LAN Emulation
implements several functions, such as mapping of MAC addresses onto ATM
addresses, transmission of LAN frames overcell-oriented network,
implementation of broadcast functions, and implementation of a
connectionless service over ATM. In conventional LANs, address resolution
is accomplished through a series of broadcast messages in which clients
and servers can communicate, even if the network address is unknown. ATM,
on the other hand, is a connection-oriented network using direct
point-to-point connections much like the public telephone system. LAN
Emulation resolves the differences between the two, achieving the
following two goals: it allows PCs and workstations to operate over ATM as
if it were a classical LAN, and it allows for an interconnection of
classical LANs with ATM LANs using LAN Emulation bridges.

Olicom's LAN Emulation software is based on the ATM Forum's LAN Emulation
Over ATM (V.1.0) standard for transparently running classical LANs over
ATM. As defined in the standard, a LAN Emulation Service allows equipment
such as hosts, desktop computers, bridges, hubs and routers with ATM
interfaces to use an ATM network as an extended LAN at the Media Access
Control (MAC) layer. With the LAN Emulation service, the ATM LAN presents
standard MAC layer interface such as NDlS and ODl to higher level
protocols. NDIS and ODI are the standard MAC layer interfaces offered by
classical LANs.

Bjarne Kaiser Lauritzen, product line director for Olicom, said: "We have
promised our customers a flexible, cost-effective and dynamic ATM
implementation. Our solution uses products which work with existing wiring
in the customer environments and which enable customers' existing
applications to run in ATM environments through LAN Emulation services.
Customers can preserve their network investments and at the same time
benefit from the greater bandwidth and increased features of ATM."

NetWorld+Interop Las Vegas

Olicom's demonstration at NetWorld+Interop this week features an Olicom LAN
Emulation Server implementing broadcast function and LAN address
registration facilities. The demonstration includes Olicom LAN Emulation
Client drivers for Microsoft Windows for Workgroups 3.11 running on two
standard PCs featuring Olicom 155 Mbps ATM EISA adapters. The PCs are
connected to an EISA server through an ATM switch. The server, running
Windows NT, is also equipped with an Olicom EISA ATM 155 Mbps adapter.

The application used in the demonstration is a standard Microsoft Windows
video conference package, which normally runs directly on Ethernet or
Token-Ring LANs. In the demonstration, the Olicom LAN Emulation package
provides an emulated Token-Ring network for the application. However,
instead of the 16 Mbps of shared bandwidth typically available from
Token-Ring, the underlying ATM network provides dedicated full duplex 155
Mbps bandwidth.

"With this demonstration, we show how our customers can migrate all of
their existing application base towards ATM without changing a single line
of code in any application," said Tomasz Goldman, director of system
engineering at Olicom. "This demonstration shows how ATM technology
removes the network as the total system bottleneck. With this video
conference application the bottleneck is the power of the Intel processor
used in the PCs, and for some other more I/O-heavy applications, the hard
disk drives. This adds new dimensions to the design of networks and the
way people work."

Pricing and availability

Olicom's ATM EISA Adapter (OC-6132) is currently available through the
Olicom ATM Adapter Evaluation Program for US$1,995.

The Olicom LAN Emulation software suite will be available in April as a
free software upgrade. The Olicom LAN Emulation software suite consists of
LANEmulation Client drivers for Windows for Workgroup 3.11 (NDIS 3.0),
Windows 95, Windows NT, and will include Novell Server (3.X, 4.X) at a
later date. The Novell client is supported through a protected mode "IPX
for NDIS 3.X" protocol stack available for Windows 95 and Windows/NT. The
software package also includes a dedicated DOS PC based LAN Emulation
Server implementing broadcast and LAN address registration facilities.

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