[asterisk-ss7] No audio in ss7 link

[rubel pool]

Dear all,

In my ss7 link,  my link is up with all configuration.... My connectivity with carrier is 2 E1.. One E1 for signalling and another E1 for Voice.. 

so from last few years, my calling was ok but unfortunately my voice is stop... where as Carrier said they have nothing change in their system.. but where is the problem??.. 

My asterisk version 1.6.2.20
 SS7 Card: Digium, Inc. Wildcard TE420P quad-span
 
## vi /etc/dahdi/system.conf

# Span 1: TE4/0/1 "T4XXP (PCI) Card 0 Span 1" (MASTER) HDB3/CCS ClockSource
span=1,1,0,ccs,hdb3
bchan=1-31

# Span 2: TE4/0/2 "T4XXP (PCI) Card 0 Span 2" HDB3/CCS
span=2,2,0,ccs,hdb3,crc4
mtp2=32


## vi /etc/asterisk/chan_dahdi.conf

[channels]
language=en
context=from-btcl
switchtype=national
signalling=ss7
toneduration=300
usecallerid=yes
callwaiting=yes
usecallingpres=no
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=no
group=1
callgroup=1
pickupgroup=1
ss7type = itu
ss7_called_nai=international
ss7_calling_nai=national
relaxdtmf=yes
rxgain=0.0
txgain=0.0
linkset = 1
pointcode = XXXX
adjpointcode = XXXX
defaultdpc = XXXX
networkindicator=national
faxbuffers => 12,half
faxdetect=both
cicbeginswith=1
channel =1-31
sigchan=32
;ss7_internationalprefix=00
;ss7_nationalprefix=0

 

where is the problem?? I matched the CIC with Carrier.. all is ok.. Please guide me..

Regards

Saleh
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