Re: UUUUU

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Article #817

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#817

From: Henry Spencer
Date: Mon, 11 Jul 1988 00:00

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The UUUUU... sequence is well-known to be the result of one of the modems
erroneously going into test-pattern mode.  Modems on time-sharing systems
and the like should *always* have remote initiation of test disabled,
because otherwise it's easy for line noise to kick the modem into this
mode.  There is no fix except to break the connection.

The 2400-baud equivalent of UUUUU is wwwww.  The former is known as "the
marching umber hulks"; I haven't heard an equivalent name for the latter.
-- 
Anyone who buys Wisconsin cheese is|  Henry Spencer @ U of Toronto Zoology
a traitor to mankind.  --Pournelle |uunet!mnetor!utzoo! henry @zoo.toronto.edu

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Message-ID: <1988Jul11.000011.530@utzoo.uucp>

Path: arc1-ca.pugleaf.net!utzoo!henry

References: <407880.880706.KFL@AI.AI.MIT.EDU>, <2799@ttrdc.UUCP>

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Newsgroups: comp.protocols.misc,comp.dcom.modems
Path: arc1-ca.pugleaf.net!utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: UUUUU
Message-ID: <1988Jul11.000011.530@utzoo.uucp>
Organization: U of Toronto Zoology
References: <407880.880706.KFL@AI.AI.MIT.EDU>, <2799@ttrdc.UUCP>
Date: Mon, 11 Jul 88 00:00:11 GMT

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