No audio in incoming call on dahdi channel

Hi all!

I’m using Digium TE110p PCI card for PRI E1 line. I have done the configurations of dahdi. I can call out from the PRI using a softphone also I can call into PRI from an external phone or mobile. When I dial a number from PRI end softphone, I can hear audio on both ends and it is working fine. But when I make a call from mobile and answer it from PRI end softphone, i can hear the audio coming from softphone on mobile but cannot hear audio from mobile on softphone.

Any suggestions why this is happening?

chan_dahdi_additional.conf is:

signalling=pri_cpe
pickupgroup=
mailbox=301@device
immediate=no
echotraining=800
echocancelwhenbridged=no
echocancel=yes
context=weather_system_pri
callprogress=no
callgroup=
callerid=device <301>
busydetect=yes
busycount=7
accountcode=
disallow=all
allow=alaw
channel=>1-15,17-31

dahdi-channels.conf is:

CCS/HDB3/CRC4 group=0,11 context=from-pstn switchtype = euroisdn signalling = pri_cpe channel => 1-15,17-31 context = default group = 63

chan_dahdi.conf is:

[trunkgroups]

[channels]

language=en
context=from-zaptel
signalling=fxs_ks
rxwink=300              ; Atlas seems to use long (250ms) winks
;
; Whether or not to do distinctive ring detection on FXO lines
;
;usedistinctiveringdetection=yes

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

;faxdetect=both
faxdetect=incoming
;faxdetect=outgoing
;faxdetect=no

;Include setup-pstn configs
#include dahdi-channels.conf

group=1

;Include PBXconfig configs
#include chan_dahdi_additional.conf

dahdi/systems.conf is:

# Span 1: WCT1/0 "Digium Wildcard TE110P T1/E1 Card 0" (MASTER) CCS/HDB3/CRC4 
span=1,1,0,ccs,hdb3,crc4
# termtype: te
bchan=1-15,17-31
dchan=16
echocanceller=mg2,1-15,17-31

# Global data

loadzone	= us
defaultzone	= us

I’m from Pakistan, could not find what to use in loadzone, so left it at default.

Issue is solved. thanks everyone. It was an issue on the service provider end.