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Path: utzoo!utgpu!utcsri!uthub!koko
From: koko@uthub.UUCP
Newsgroups: comp.dcom.modems
Subject: Re: Spurious { on 1200 baud line (summary request)
Message-ID: <647@uthub.toronto.edu>
Date: Fri, 20-Nov-87 00:47:38 EST
Article-I.D.: uthub.647
Posted: Fri Nov 20 00:47:38 1987
Date-Received: Sat, 21-Nov-87 17:22:05 EST
References: <3563@uwmcsd1.UUCP>
Organization: CSRI, University of Toronto
Lines: 18
Keywords: modem noise
Summary: familiar


What a coincidence.  When the University of Toronto had a new telephone
system installed within the past year, I started experiencing the noise
that you described -- mainly "{}ir~" characters during mild spells, or
almost any characters during heavy spells.  Supposedly Bell Canada has
been trying to trace the problem, but acknowledges that the problem is
caused by their new digital switching equipment.  I think that the noise
may be caused by the random dropping of digital samples perhaps when the
total load on the switching system is heavy.  (I have noticed that only
the 978 numbers are noisy, and only when an audio signal is present,
and that there is more noise, on average, during the day, when one expects
telephone traffic to be heaviest.)

In any event, if you experience noise, then complain!  The problem
will never get corrected if you don't let anyone know that it exists!
I, along with other users, complained in the past until Bell fixed the
problem.  However, a month ago the problem cropped up again.  I have
complained, but so far there have been no results.