[HELP] problems with outgoing calls to the PSTN

Hi everyone, when i’m dial-out (to PSTN) from any extension, after one ring the call hangs up. I’m using TDM11B and one SIP phone. I can make calls within the company and I can receive calls from the PSTN. My problem is calling to the PSTN

here you can see my configuration: pastebin.ca/23651

Thanks in advance.

Hi there,

I’m using ISDN-PRI with Digum 4 E1 board.

The zapata.conf looks like this:

[channels]

language=en
signalling=pri_cpe
context=default

usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=no
echotraining=800
rxgain=0.0
txgain=0.0
group=0
callgroup=1
pickupgroup=1
immediate=no

group = 1
channel => 1-15
channel => 17-31

group = 2
channel => 32-46
channel => 48-62

group = 3
channel => 63-77
channel => 79-93

group = 4
channel => 94-108
channel => 110-124