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Path: utzoo!decvax!ucbvax!CSV.RPI.EDU!yerazuws
From: yerazuws@CSV.RPI.EDU.UUCP
Newsgroups: mod.computers.vax
Subject: Re: Raising DTR
Message-ID: <8701091435.AA27224@csv.rpi.edu>
Date: Fri, 9-Jan-87 09:35:20 EST
Article-I.D.: csv.8701091435.AA27224
Posted: Fri Jan  9 09:35:20 1987
Date-Received: Fri, 9-Jan-87 23:41:53 EST
References: <1314*stokes@cmc.cdn>
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Organization: The ARPA Internet
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Summary: MODEM does it

In article <1314*stokes@cmc.cdn>, stokes%cmc.cdn%ubc.CSNET@RELAY.CS.NET (Peter Stokes) writes:
> Hello,
> 
> Does anybody have a piece of code (MACRO, FORTRAN, C or other) to 
> manually raise and drop DTR on a terminal port?  
	
I have an application which (from a command file) must raise and lower
DTR several times (to get the attention of the modem, insure the 
phone line disconnects, etc.).  
	
SET TERM /MODEM/PERM and SET TERM /NOMODEM/PERM raise and lower
DTR respectively.  Note that another process can do this while one 
process is running (but this needs privs).
	
This is VMS 4.4 on an AI VAXstation (uVAX II), with a DHV-11.  The
DMF32 device driver should respond similarly. 
	
	-Bill Yerazunis