Listing 4

mesg n
stty -echo

  #retval=$?
  tty_now=`tty`;
if [ "$tty_now" = "/dev/ttyC6" ];
 then
  /usr/sbin/pppd -detach modem passive crtscts 206.156.217.10:206.156.217.31
 fi
if [ "$tty_now" = "/dev/ttyC7" ];
 then
  /usr/sbin/pppd -detach modem passive crtscts 206.156.217.10:206.156.217.32
 fi
if [ "$tty_now" = "/dev/ttyC8" ];
 then
  /usr/sbin/pppd -detach modem passive crtscts 206.156.217.10:206.156.217.33
 fi
if [ "$tty_now" = "/dev/ttyC9" ];
 then
  /usr/sbin/pppd -detach modem passive crtscts 206.156.217.10:206.156.217.34
 fi
if [ "$tty_now" = "/dev/ttyC10" ];
 then
  /usr/sbin/pppd -detach modem passive crtscts 206.156.217.10:206.156.217.35
 fi
exit