[SR-Users] One way audio calls

[Will Ferrer]

Hi Javier

Yes we are, but the problem only happens in %6-%8 of the calls. It happens
in calls that have identical signaling to the ones that don't have the
problem.

I have been speaking with Richard Fuchs at sip wise and I am going to try
adding the trust address flag to sip wise and see if it helps. That
hopefully will make it take the address in the c= attribute more readily.

I will update this thread once we push that live.

If any one has another suggestions though I am very open to hearing them :).

Thanks very much.

All the best.

Will Ferrer

Switchsoft Inc

On Thu, Nov 20, 2014 at 9:29 AM, Javier Ricke <javierr.vv at gmail.com> wrote:

> u job behind nat?
>
> 2014-11-19 3:13 GMT-03:00 Will Ferrer <will.ferrer at switchsoft.com>:
>
>> Hi All
>>
>> We are experiencing an odd problem with 1 way audio in about %6-%8 of our
>> calls.
>>
>> It seems to me that what is happening is that our kamailio installation
>> (using rtpengine) is some times ignoring the c= attribute that the carrier
>> is sending us, and sending our audio instead to either address in the
>> carriers o= attribute, or just to the same address we sent our sip invite
>> too.
>>
>> We have looked at hundreds of calls and haven't found a reliable pattern
>> why this happens some times and not others. It really happens in a lot of
>> different scenarios with lots of different carriers and differently
>> formatted SDP packets.
>>
>> I was wondering if any one had an idea where to start for a solution, or
>> a way to make rtpengine always send audio to the ip in the c= attribute we
>> are receiving from the carrier.
>>
>> I haven't been able to find anything so far.
>>
>> Thank you much for any assistance.
>>
>> All the best.
>>
>> Will
>>
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>>
>
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