#!/bin/bash
/bin/date >>/root/isdn.cron
if 
/bin/ping -c1 156.17.x.x|/bin/grep 'ret'>/dev/null 2>/dev/null ;then
echo "aaa"
/bin/date >>/root/isdn.restarted
#/root/isdn-down
#/root/isdn-restart
/root/isdn-down
/etc/rc.d/rc.isdn
fi
/bin/sleep 5
if 
/bin/ping -c5 156.17.x.x|/bin/grep '0 packets received'>/dev/null 2>/dev/null ;then
/bin/date >>/root/isdn.restarted2
/root/isdn-down
/etc/rc.d/rc.isdn
fi