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From: iglesias@UCI-ICSA.ARPA (Mike Iglesias)
Newsgroups: fa.info-vax
Subject: Re: dhv-11's and uVAX
Message-ID: <8510112337.AA23436@UCB-VAX.ARPA>
Date: Fri, 11-Oct-85 19:33:49 EDT
Article-I.D.: UCB-VAX.8510112337.AA23436
Posted: Fri Oct 11 19:33:49 1985
Date-Received: Sun, 13-Oct-85 04:19:19 EDT
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I think you need to assert CTS (pin 5) also.  See page 8-17 of the
I/O User's ref manual, part 1.  There's a flowchart of how the 
terminal driver handles the signals.  You should also be sure that
MODEM is set for the the line.  You may also want to pass the
RING signal from the modem to the port, and set sysgen symbol
TTY_DIALTYPE to 2.  Of course, this affects all your other lines also,
so you should make sure all your other lines will assert RING also.

Pages 8-12 and 8-13 of the same manual lists all the signals that are
used and who should assert them.

Mike