Barr Delivers SNA for Windows NT at T1 Speeds

(Atlanta, GA--May 24, 1993) Microsoft is using a new, high-speed adapter
from Barr Systems to demonstrate its remote SNA/SDLC connectivity at
Comdex/Windows World this week in Atlanta. Barr's new adapter, dubbed
T1-SYNC for Windows NT, supports SDLC and X.25/QLLC connections from
Microsoft's SNA Server at synchronous data rates up to T1 (1.536 Mbps) and
E1 (2.048 Mbps).

The T1-SYNC for Windows NT package includes Barr's T1-SYNC adapter and
software drivers. Since the Microsoft SNA Server's architecture is
carefully layered, any SNA client product that uses the SNA Server can
also use Barr's new high-speed synchronous adapter.

A unique feature of the T1-SYNC adapter is support for RS-232/V.24, V.35,
X.21, and RS530 electrical standards. The board can be changed from one
standard to another simply by plugging in the appropriate jumper block.
Thus, there is no need to replace the T1-SYNC adapter even when the
surrounding equipment is changed.

Barr is also replacing the SDLC software, currently provided by Microsoft,
with a module which supports true full-duplex. This feature, a hallmark of
Barr's mainframe communications products, allows a synchronous line to
carry up to twice as much data. Few, if any, other downstream SDLC devices
support simultaneous sending and receiving of data. This mode is defined
at the mainframe as DATMODE=FULL.

The T1-SYNC adapter is also used with DOS-based products such as the
BARR/RJE Remote Job Entry package, and the BARR GATEWAY. T1-SYNC for
Windows NT is available in two versions. For DATMODE=HALF, the price is
$1,190. The DATMODE=FULL version sells for $1,590. These prices include
all interfaces, drivers, and cables. Barr Systems, Inc. offers a complete
line of PC-based connectivity products, supporting high-volume printing,
3270 emulation and file transfer. For more information, call
1-800-227-7797.

Barr Systems Inc, 4131 NW 28 Lane, Gainesville, FL 32606-6681
800-BARR-SYS;  904-371-3050

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