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From: hsc@mtund.ATT.COM (HARVEY COHEN)
Newsgroups: comp.sys.att
Subject: Re: COM2 and Graphics with 6300+ running Unix
Message-ID: <870@mtund.ATT.COM>
Date: Wed, 29-Jul-87 09:08:53 EDT
Article-I.D.: mtund.870
Posted: Wed Jul 29 09:08:53 1987
Date-Received: Fri, 31-Jul-87 03:56:28 EDT
References: <19878@ucbvax.BERKELEY.EDU>
Distribution: na
Organization: AT&T ISL Middletown NJ USA
Lines: 18
Summary: COM2 UNIX driver available with TelephoneMgr/Email software or with VERSANET boards.

The AT&T Telephone Manager/Email software package for the UNIX on the PLUS
comes with a driver that will work with most dumb COM2 ports,
Hayes modems, and AT&T modems.  The Price Element Code is either 
1110-TEL or 1111-TEL (memory fails me).  It is similar
to the Telephone Manager and Email packages for the UNIX PC.
It is fairly pricey.  Order direct from AT&T.
Alternatively, CTC Systems (1928A Old Middlefield Way, Mt. View,
CA 94043, tel. 415-966-1688) sells two four-port serial boards with
UNIX drivers for the PLUS.  Both are good dollar values.
One has four dumb, IBM-PC-standard, 8250A-based ports.
Since it depends on the CPU catching every interrupt, UNIX throughput
is limited and characters tend to get dropped.  For running login
ports for terminals, though, it's usually adequate.
The other board has a Z80B and about 256Kbytes of buffering.
It does canonical processing for terminal logins, and it runs
uucp and cu at 9600 baud.  I have one on my machine, and I love it.
-- 
Harvey S. Cohen, AT&T Data Systems, Lincroft, NJ, mtund!hsc, (201)576-6387