Thank you for your reply Kalolyan.

I've made the adjustments that you've suggested and will retest shortly.
A quick check though with regards to dahdi_monitor syntax. May I use dahdi_monitor as follows to show the CIC?
/dahdi_monitor 1 -v/

For monitoring channel 1.






Get important Linux and industry-related news at: facebook.com/dcdata <http://facebook.com/dcdata>

Kind regards,

David Wilson
CNS,CLS, LINUX+, CLA, DCTS, LPIC3
*LinuxTech CC t/a DcData*
CK number: 2001/058368/23
*Website:*      http://www.dcdata.co.za
*Support:*      +27(0)860-1-LINUX
*Mobile:*       +27(0)824147413
*Tel:*  +27(0)333446100
*Fax:*  +27(0)866878971


On 08/02/2012 01:02 PM, Kaloyan Kovachev wrote:
Hi,

On Thu, 02 Aug 2012 12:19:06 +0200, David Wilson<d...@dcdata.co.za>
wrote:
*/etc/asterisk/chan_dahdi.conf*:
[trunkgroups]

[channels]
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
relaxdtmf=yes
rxgain=0.0
txgain=0.0
group=1
callgroup=1
pickupgroup=1
immediate=no

;Sangoma A102 port 1 [slot:4 bus:12 span:1]<wanpipe1>
switchtype=euroisdn
you should not define switchtype with ss7 - it is only for PRI signaling

context=from-ss7
group=0
echocancel=no
signaling=ss7
linkset=1
ss7type=itu
ss7_called_nai=dynamic
ss7_calling_nai=dynamic
ss7_internationalprefix=00
ss7_nationalprefix=0
ss7_subscriberprefix=
ss7_unknownprefix=
;ss7_explicitacm=yes
pointcode=1379
adjpointcode=1288
defaultdpc=1288
networkindicator=national

;First E1
sigchan=16
cicbeginswith=1
channel=1-15
cicbeginswith=17
channel=17-31

;Second E1
sigchan=47
cicbeginswith=33
channel=32-46
cicbeginswith=49
channel=48-62

please define your sigchans last.

you may use dahdi_monitor to check on which CIC you are receiving the
audio from the other side and if it is not the one on which you are sending
it - you can be sure about the misalignment. You may comment out the second
E1 and check with the telco if they get the signaling on their first link
or (as you can't swap the cables) just swap them in your config and see if
the audio is working:

;First E1
cicbeginswith=1
channel=32-46
cicbeginswith=17
channel=48-62

;Second E1
cicbeginswith=33
channel=1-15
cicbeginswith=49
channel=17-31
sigchan=16
sigchan=47


*/etc/asterisk/extensions.conf*
[general]

[from-ss7]
exten =>  _X.,1,Answer
exten =>  _X.,n,Monitor(wav,${UNIQUEID},m)
exten =>
_X.,n,Playback(/var/lib/asterisk/sounds/en/followme/pls-hold-while-try)
exten =>  _X.,n,MusicOnHold(default,60)

Get important Linux and industry-related news at: facebook.com/dcdata
<http://facebook.com/dcdata>

Kind regards,

David Wilson
CNS,CLS, LINUX+, CLA, DCTS, LPIC3
*LinuxTech CC t/a DcData*
CK number: 2001/058368/23
*Website:*      http://www.dcdata.co.za
*Support:*      +27(0)860-1-LINUX
*Mobile:*       +27(0)824147413
*Tel:*  +27(0)333446100
*Fax:*  +27(0)866878971
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