[SR-Users] One Way RTP from destination SIP server using rtpengine

[Don Fanning]

Hi Fred,

The forward path is like this:
SipML5 -> [WSS (UDP/TLS/RTP/SAVPF)] -> Kamailio -> RTPEngine -> [SIP
(RTP/AVP)] -> OpenMCU-ru

The return is opposite of this.

Call setup over SIP works fine from one end to the other and back.

Media i know is fine from SipML5 to Kamailio on the forward path over WSS.
I do not see forward media going out of the machine.  So maybe it's better
termed that SIP is fine but RTP is broken in both directions.  I see STUN
negotiate successfully on this portion as well between SipML5 and
Kamailio/RTPEngine.

The return path, media generated by OpenMCU-ru is sent back over via
RTP/AVP to Kamailio/RTPEngine and that is where it gets lost.

Thanks,
-Don

On Fri, Feb 6, 2015 at 5:47 AM, Fred Posner <fred at palner.com> wrote:

> Do you have any of the sip traffic?
>
> Also, are you using FreeSWITCH for the media of WSS?
>
> Fred Posner
> The Palner Group, Inc.
> http://www.palner.com (web)
> +1-503-914-0999 (direct)
>
>
> On 02/05/2015 09:38 PM, Don Fanning wrote:
>
>> Hello All,
>>
>> I currently am running Kamailio in a WSS configuration with sipML5.  I
>> use rtpengine to convert a RTP/SAVPF packet to a RTP/AVP packet as the
>> destination server only supports AVP or SAVP.
>>
>> RTPEngine has no issues rewriting the packet going out, the SIP session
>> comes up and handshakes correctly to start the session.  Then the remote
>> server sends the RTP stream back and I'm having issues getting Kamailio
>> or RTPEngine or something to take the RTP stream, process it back to
>> SAVPF and send it back out the WSS port.  I see no RTP data come from
>> Kam/RTPengine going towards the remote server.
>>
>> On the server side, I do see STUN being called and the sipML5 bind
>> successfully but that's it.
>>
>> Both the destination and server sit without firewalls in the way so the
>> problem has to be what I'm doing in Kamailio.
>>
>> My config is located here:
>> http://pastebin.com/dWLdUz5j
>>
>> Packet dumps available upon request.
>>
>> Thanks for any assistance!
>>
>>
>>
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>>
>>
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