Listing 2. Ringing the Phone
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <linux/telephony.h>
#include <linux/ixjuser.h>
int
main(int argc, char *argv[])
{
int ixj=-1;
char pname[80], maxrings;
if(argc >= 2)
sprintf(pname, "%s", argv[1]);
else
sprintf(pname, "/dev/phone0");
printf("Opening %s\n",pname);
ixj = open(pname, O_RDWR);
if(ixj<1)
{
printf("Error opening device %s\n",pname);
perror("open ");
exit(-1);
}
if(argc >= 3)
maxrings = atoi(argv[2]);
else
maxrings = 2;
ioctl(ixj, PHONE_MAXRINGS, maxrings);
if(!ioctl(ixj, PHONE_RING))
{
printf("No Answer\n");
}
else
{
printf("Phone answered\n");
}
close(ixj);
}
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