[Asterisk-Users] No sound when calling in from pstn

[Greg]

I am just starting out with * so bear with me please.

I have tdm400p with 4 fxo modules on it. When I call into the asterisk 
box from my mobile, I can see the asterisk console picks the call up 
and routes it to my computer with x-lite. There was no sound coming 
from either - just silence. I then decided to route it directly to 
voice mail to see if that would narrow the problem down, but it too 
doesn't make any sound. I can see asterisk display what it is saying 
when going through the voicemail sequence, it is just I cannot hear it 
on my mobile.

here is my zapata.conf

context=incomingcall ; from-1800
signalling=fxs_ks
faxdetect=incoming
usecallerid=yes
echocancel=yes
echocancelwhenbridged=no
group=1
channel=>1

context=incomingcall
signalling=fxs_ks
faxdetect=incoming
usecallerid=yes
echocancel=yes
echocancelwhenbridged=no
echotraining=800
group=3
channel=>2-3

context=from-fax
signalling=fxs_ks
faxdetect=incoming
usecallerid=yes
echocancel=yes
echocancelwhenbridged=no
echotraining=800
group=3
channel=>4

Any help is greatly appreciated.

Regards,
Greg