Run the following commands to download and rebuild the zaptel driver
(A spare copy of the tar.gz file is on the emergency CD)
cd /usr/src
wget http://ftp.digium.com/pub/zaptel/releases/zaptel-1.2.8.tar.gz
tar -zxvf zaptel-1.2.8.tar.gz
mv zaptel zaptel.old
mv zaptel-1.2.8 zaptel
cd /usr/src/zaptel
make clean
make install
nano -w /etc/sysconfig/zaptel
	Remove the # before the lines representing your hardware
	CTRL-X, Y, [Enter] to save
rebuild_zaptel
modprobe wcfxo
	make sure to modprobe all yours hardware
genzaptelconf
shutdown -r now

After reboot, run these commands
amportal stop 
genzaptelconf
touch /etc/fxotune.conf
/usr/sbin/fxotune -s