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From: rjk@mgweed.UUCP (Randy King)
Newsgroups: net.lan
Subject: Re: SYTEK 20/222 reliability problems?
Message-ID: <14627@mgweed.UUCP>
Date: Wed, 2-Jan-85 18:58:19 EST
Article-I.D.: mgweed.14627
Posted: Wed Jan  2 18:58:19 1985
Date-Received: Fri, 4-Jan-85 04:02:36 EST
References: <163@uf-csv.UUCP>
Organization: AT&T Consumer Products - Montgomery Illinois
Lines: 20

We've had higher than normal failure rates on the S-muxen, too.  Of course,
with the 20/100's and 20/200's, "normal" meant one or two out of 75 or so,
and most of them were un-seated boards from shipment.

We have also noticed operational problems with the S-mux.  Whenever we'd
use one for people ports (human at a 20/100 calling the S-Mux) the charcter
echo got real fragmented like there were some contention problems.

So we put the S-muxen on the outgoing (wrt computer) ports for the lineprinter
system and uucp where the problem is not noticeable.  Then we noticed a bit
of DTR/DCD problems; at times sessions would close just as they were opening.

We have not investigated further; nor have we bought any more S-muxen.  I
might also add that we have not pursued it with the Sytek people either.
Other problems have been taken care of promptly.

						Randy King
						AT&T-CP@MG
						ihnp4!mgweed!rjk