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From: cs177fbp@sdcc3.ucsd.EDU (I-Teh Hsieh)
Newsgroups: comp.dcom.modems
Subject: Prometheus ProModem 1200
Message-ID: <4097@sdcc3.ucsd.EDU>
Date: Thu, 19-Nov-87 19:32:15 EST
Article-I.D.: sdcc3.4097
Posted: Thu Nov 19 19:32:15 1987
Date-Received: Sun, 22-Nov-87 10:27:32 EST
Organization: University of California, San Diego
Lines: 6

I got a ProModem 1200 external back in '84, and haven't had any
problems until now.  It seems that right after it dials, it
immediately prints out a RINGING message, even if the line is busy.
It won't detect a busy signal any more.  Does anyone have any ideas
where I should start looking for the problem?  Problem with some
chips?  Thanks.