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Posting-Version: version B 2.10 5/3/83; site models.UUCP
Path: utzoo!linus!security!genrad!grkermit!masscomp!clyde!floyd!cmcl2!rocky2!cubsvax!models!ken
From: ken@models.UUCP
Newsgroups: net.dcom
Subject: How to hang up?
Message-ID: <107@models.UUCP>
Date: Wed, 7-Dec-83 18:14:17 EST
Article-I.D.: models.107
Posted: Wed Dec  7 18:14:17 1983
Date-Received: Sat, 10-Dec-83 22:40:12 EST
Organization: Brignoli Models Inc., New York
Lines: 16

We have a Racal-Vadic 3451 auto-dial modem which we use to dial out.
It's attached to a tty port (we're running 4.1bsd) on an Emulex CS21/F
(like a DMF32); all lines are configured for "modem". The "/etc/ttys
entry is "03ttyxx". To dial out, we say
	cu -a /dev/null -l /dev/ttyxx -s 1200
After it says "Connected", we type ^E return and talk to the modem. Generally
we talk to non-UNIX systems this way.

The problem is that when we're done, we can disconnect (~.) in software,
but the modem doesn't hang up; the remote system doesn't drop DTR or DSR
or whatever it's supposed to drop. Is there a way to tell it to hang up that
1) doesn't require kludging the cu source and 2) doesn't require you to
be superuser?

Ken Winston
harpo!rocky2!cubsvax!models!ken