[asterisk-ss7] No Audio on SS7 calls to Remote PRIs

[Stephan Ellis]

I do see audio being received, but I don't hear it on my softphone.  I see
no TX at all.  Interestingly, the guy on the pri I was calling said he could
hear me.  The remote pri is an asterisk box, so i set a DID on it to go
straight to the echo test.  While that system is playing demo-echo I see RX
on my end, but when the actual echo test starts i see nothing.

-stephan

On Thu, Sep 30, 2010 at 9:45 AM, Jean Cérien <cerien.jean at gmail.com> wrote:

>
> Hi
>
> Have you tried using dahdi_monitor to see if any sound is received ?
>
> Rgds,
> J.
>
> On Thu, Sep 30, 2010 at 10:15 AM, Stephan Ellis <stephan.ellis at gmail.com>wrote:
>
>> All,
>>
>>   I've got a problem on my SS7 implementation.  When I originate calls
>> across my SS7 link and the call lands on a PRI, I get no audio in either
>> direction.  The stack I am using is:
>>
>> Asterisk 1.6.2.13
>> DAHDI 2.4.0
>> libss7 1.0.2
>> libpri 1.4.11 (not sure if i need that, but thought it might be needed for
>> ISUP stuff)
>> WANPIPE 3.5.15.4
>> Linux Kernel 2.6.18-194.11.4.el5 on Centos 5.5
>>
>> The whole stack was hand compiled on the server (not from repos).
>>
>> My dialplan is pretty simple, possibly too simple:
>>
>> exten => _XXXXXXX,1,Dial(DAHDI/g0/${EXTEN})
>> exten => _XXXXXXX,n,Hangup()
>>
>> My chan_dahdi.conf looks like this:
>>
>> ;autogenerated by /usr/sbin/wancfg_dahdi do not hand edit
>> ;autogenrated on 2010-09-24
>> ;Dahdi Channels Configurations
>> ;For detailed Dahdi options, view /etc/asterisk/chan_dahdi.conf.bak
>>
>> [trunkgroups]
>>
>> [channels]
>> context=default
>> usecallerid=yes
>> hidecallerid=no
>> callwaiting=yes
>> usecallingpres=yes
>> callwaitingcallerid=yes
>> threewaycalling=yes
>> transfer=yes
>> canpark=yes
>> cancallforward=yes
>> callreturn=yes
>> echocancel=no
>> echocancelwhenbridged=no
>> relaxdtmf=yes
>> rxgain=0.0
>> txgain=0.0
>> group=1
>> callgroup=1
>> pickupgroup=1
>> immediate=no
>>
>> ss7type=ansi
>> signalling=ss7
>> ss7_called_nai=dynamic
>> ss7_calling_nai=dynamic
>> ss7_internationalprefix=00
>> ss7_nationalprefix=0
>> ss7_subscriberprefix=
>> ss7_unknownprefix=
>> networkindicator=national
>> explicitacm=yes
>> linkset=1
>> pointcode=1-1-1
>> defaultdpc=5-9-192
>> adjpointcode=5-9-192
>> group=0
>> cicbeginswith=1
>> channel=2-24
>> sigchan=1
>>
>> context => from-pstn
>>
>>
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>
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