Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site inuxc.UUCP
Path: utzoo!watmath!clyde!akgua!mcnc!decvax!harpo!ulysses!mhuxl!cbosgd!ihnp4!inuxc!mcferrin
From: mcferrin@inuxc.UUCP (P McFerrin)
Newsgroups: net.dcom
Subject: Re: UUUUUUUUUUUUUUUUUUUU
Message-ID: <960@inuxc.UUCP>
Date: Mon, 14-May-84 18:45:16 EDT
Article-I.D.: inuxc.960
Posted: Mon May 14 18:45:16 1984
Date-Received: Wed, 16-May-84 07:25:48 EDT
References: <4644@amd70.UUCP>
Organization: AT&T Consumer Products Div., Indianapolis
Lines: 15

The above string is a pattern of alternate 1's and 0's.  When a 212 dataset
is in 'self test' mode, it will constantly send this pattern to the
telco line side of the modem.  Another anoying problem is that a dataset
will all of a sudden go into loopback mode.  If this occurrs on the host
end, the symptom is echoeing of your characters without processing.
(e.g. a carriage return will be echoed but the line feed usually xmited
by Unix will be missing)  This usually is a result of some noise causing
a remote dataset to go into remote loopback.  Switch #7 on switch pack #2
can disable this feature thus forcing the dataset to go into loopback mode
ONLY when the DL button is depressed.  I beleive (which means I am uncertain)
that this switch will probably not have any effect on the dataset going into
self test mode.  Therefore the solution is to notify the computer center of
this condition and have the dataset replaced.

			Paul McFerrin