[asterisk-ss7] No Audio

[James zhu]

hi:
yes, it should be a problem with CIC mismatched.

Best regards,
James.zhu
Doing asterisk/PRI/ss7/dahdi, linux, asterisk cards, gateway(fxs/fxo/pri<->SIP).
website: www.voipviews.com 


Date: Tue, 12 Jul 2011 03:17:22 -0500
From: thomcr at gmail.com
To: asterisk-ss7 at lists.digium.com
Subject: Re: [asterisk-ss7] No Audio

How do you know you have your CICs aligned?

You and the TELCO could start counting from the same place, however the E1 may be crossed. This happend to me when 2nd E1 of the TELCO was the 3rd for me.  The cal would be established on CIC 33 for Example on E1 #2, but my server was reciving it on #3.


I would recommend you to disconnect all your E1 and confirm with the alarms the TELCO has them on the same order than you. Or just try the different combination.

As well double check your CIC count to make sure it matched the TELCO.


On Tue, Jul 12, 2011 at 3:08 AM, Trevor Francis <trevor.francis at tgrahamcapital.com> wrote:

We have gone round and round on getting our ss7 link up. We can get the cics to align and the signaling link to come up. However, when we dial there is no audio in either direction.



Chan_dahdi:





[trunkgroups]

[channels]

context=default

usecallerid=yes

hidecallerid=no

callwaiting=no

usecallingpres=yes

threewaycalling=no

transfer=yes

canpark=no

cancallforward=no

callreturn=no

echocancel=yes

echocancelwhenbridged=yes

relaxdtmf=yes

rxgain=0.0

txgain=0.0

immediate=no

prematureaudio=no

language=en

group=1

signalling = ss7

ss7type = itu





linkset = 1

pointcode=6314 ; switch point code

adjpointcode=12450 ; peer point code.

defaultdpc=12450 ; per point code.

networkindicator=international

slc=0

;ss7_internationalprefix = 00

;ss7_nationalprefix = 0

;ss7_subscriberprefix =

;ss7_unknownprefix =



mtp2=1

sigchan=1

context=default

cicbeginswith = 2

channel = 2-31

cicbeginswith = 33

channel = 32-62

cicbeginswith = 65

channel = 63-93

cicbeginswith = 97

channel = 94-124



Dahdi system.conf



span=1,1,0,ccs,hdb3

bchan=2-31

dchan=1

echocanceller=mg2,2-31



span=2,0,0,ccs,hdb3

bchan=32-62

echocanceller=mg2,32-62



span=3,0,0,ccs,hdb3

bchan=63-93

echocanceller=mg2,63-93



span=4,0,0,ccs,hdb3

bchan=94-124

echocanceller=mg2,94-124



loadzone = fr

defaultzone = fr





Any ideas?



Running  Asterisk 1.8.4.4, DAHDI Version: 2.4.1.2 Echo Canceller: MG2, libss7 version: 1.0.2



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Robert


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