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From: robert@pttesac.UUCP (Robert Rodriguez)
Newsgroups: comp.sys.att
Subject: Re: VOICE/DATA toggle for 3B1
Message-ID: <592@pttesac.UUCP>
Date: Tue, 13-Oct-87 15:15:39 EDT
Article-I.D.: pttesac.592
Posted: Tue Oct 13 15:15:39 1987
Date-Received: Thu, 15-Oct-87 02:23:09 EDT
References: <7600003@uiucdcsm>
Reply-To: robert@pttesac.UUCP (Robert Rodriguez)
Organization: Pacific*Bell ESAC, San Francisco, Ca.
Lines: 74
Summary: This might work...

In article <7600003@uiucdcsm> hartman@uiucdcsm.cs.uiuc.edu writes:
>
>Does anyone have a program for the 3b1/7300 which will toggle ph0
>between VOICE and DATA like F3 does from within the phone manager?
>I am looking for something that can be placed in crontab to switch
>my line to DATA at night.
>
>-------------------------------------------------------------------
>Mark Hartman			    ihnp4!uiucdcs!hartman

/*
 *
 * phstat	A quick hack to get the status of the phone line so
 *		we can decide whether or not to toggle it.
 *
 *		At home, I have only one line, so when I leave for work
 *		I want my phone line set to DATA.  I run a shell script
 *		from cron at 7:00 AM, that goes something like this:
 *
 *
 *		Status=`/usr/lbin/phstat /dev/ph0`
 *
 *		if [ "$Status" = "VOICE" ] ; then
 *		  /usr/bin/phtoggle
 *		fi
 *
 *
 *		Again, this was a quick hack, and I'm sure it could be
 *		done better, so no flames please.
 *
 *
 * Robert Rodriguez  {inhp4|ptsfa}!pttesac!robert
 */

#include	<sys/phone.h>

/*
 * We could include fcntl.h, but why ?
 */

#define		O_RDWR		2
#define		O_NDELAY	04

main(argc, argv)
int	argc;
char	**argv;
{
	int	fd;

	struct	updata	phdata;

	if(argc != 2) {
		printf("Usage: phstat <device>\n");
		exit(1);
	}

	if((fd = open(argv[1], O_RDWR | O_NDELAY)) != 0)
		exit(1);

	if((ioctl(fd, PIOCGETP, &phdata)) != 0)
		exit(1);

	if(phdata.c_lineparam & VOICE)
		printf("VOICE\n");
	else
		printf("DATA\n");

	close(fd);

	exit(0);
}


Hope this helps.....