Path: utzoo!attcan!uunet!mcvax!dutrun!rcdsdgx
From: rcdsdgx@dutrun.UUCP (Dik Groot)
Newsgroups: comp.protocols.misc
Subject: Re: UUUUU
Summary: 1200Hz square wave
Keywords: modem hayes oscillation
Message-ID: <309@dutrun.UUCP>
Date: 11 Jul 88 09:17:20 GMT
References: <407880.880706.KFL@AI.AI.MIT.EDU> <582@ontenv.UUCP>
Reply-To: rcdsdgx@dutrun.UUCP (Dik Groot)
Organization: Delft University of Technology, The Netherlands
Lines: 17

In article <407880.880706.KFL@AI.AI.MIT.EDU>, KFL@AI.AI.MIT.EDU ("Keith F. Lynch") writes:
> My Hayes 1200 gets into this mode once every few dozen hours of use.
> It doesn't seem to correlate with what I'm doing.  It sends a bunch
> of UUUUU to the host, and locally echos anything I type.  I can't
> find a way out of it except to turn it off and on again.
> 								...Keith

The ASCII representation of ..UUUUU.. (with 8 databits, no parity, 1
stopbit) exactly matches a 1200HZ square wave. Could there be something
in the various modems, that is oscillating freely (at the correct
baudrate) ?
                                            Dik Groot .
-- 
{ - - - - - - - - - - - - - - - - - - - disclaimer : I usually lie. }
Dik Groot,   Delft University of Technology,   Rekencentrum,   DUneT.
Postbox 354, 2600 AJ Delft.  ptt: (31)-15-781938  fax: (31)-15-786522
BITNET/EARN: RCDSDGX AT HDETUD1          usenet/eunet: rcdsdgx@dutrun