Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1     9/27/83; site saturn.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!harpo!decvax!ittvax!dcdwest!sdcsvax!sdcrdcf!hplabs!saturn!faunt
From: faunt@saturn.UUCP
Newsgroups: net.dcom
Subject: Re: UUUUUUUUUUUUUUUUUUUU
Message-ID: <2101@saturn.UUCP>
Date: Tue, 15-May-84 08:15:42 EDT
Article-I.D.: saturn.2101
Posted: Tue May 15 08:15:42 1984
Date-Received: Thu, 17-May-84 05:41:54 EDT
References: <4644@amd70.UUCP>
Organization: Hewlett Packard Labs, Palo Alto CA
Lines: 9

The UUUUUU's are the loopback test.  Racal-Vadic 34xx series modems seem to
be put into this mode by a very short interruption of carrier from the other
end, (if enabled).  I suspect VA212's do the same thing.
 I had a problem with one of my users usually leaving the dial-in's in
loopback mode after disconnect, since he lived in an area with flaky
telephone service that also affected his voice service.  Since the modem
"busied out" on test, the next time he dialed in, he got the next modem,
and did the same thing to it.  He could eat all seven modems on one
machine by Saturday afternoon.