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From: info-vax@ucbvax.ARPA
Newsgroups: fa.info-vax
Subject: Cancelling XOFF
Message-ID: <9747@ucbvax.ARPA>
Date: Wed, 7-Aug-85 20:56:07 EDT
Article-I.D.: ucbvax.9747
Posted: Wed Aug  7 20:56:07 1985
Date-Received: Sun, 11-Aug-85 04:13:44 EDT
Sender: daemon@ucbvax.ARPA
Organization: University of California at Berkeley
Lines: 24

From: munnari!metro.oz!jimr@seismo.CSS.GOV

[ If this line is missing you'll know the line eater still lives. ]

Does anyone know a way of cancelling CTRL/S on a terminal line other than
typing a CTRL/Q?

Our students tend to hit CTRL/S unknowingly, wonder why the terminal
hangs, and leave.  I can tell that this has happened because by evening
the process is still there and SHOW DEVICE indicates many errors on the
line, and sometimes a timeout as well.  I stop the process, but the
only way I know of cancelling the CTRL/S is to locate the terminal in
the laboratory (a time-consuming business) and give it a CTRL/Q.  

A worse problem occurs with the network which connects some of our terminals
to the VAX: it sometimes sends a CTRL/S to the host then cannot easily be
persuaded to send a CTRL/Q.

I have tried SET TERM/HANGUP, and SET TERM/NOTTSYNC then /TTSYNC again, to
no avail.  We cannot disable TTSYNC permanently, because the knowledgeable
users need it.

We are running VMS V4.1 on a 780, with DZ-11s and Able VMZ32Ns.