[OpenSIPS-Users] RTP Proxy Problem - No Way Audio (RTP Traces Within)

[Răzvan Crainea]

Hi, Nick!

 From your traces, I can see that the RTPProxy session is properly 
established (you have both an offer and an answer). But on the media 
level, all I can see is that Asterisk (the callee) is sending RTP to 
caller, but the caller doesn't send anything. Also, this is what 
RTPProxy indicates (RTP stats: 86 in from callee, 0 in from caller). 
Most likely you should checkwhere is the NAT Box trying to sendRTP.

Best regards,

Razvan Crainea
OpenSIPS Core Developer
http://www.opensips-solutions.com

On 03/15/2013 02:00 AM, Nick Khamis wrote:
> Hello Everyone,
>
> I am having problem getting RTP packets flowing smoothly. The setup is
>
> NAT Box (192.168.2.1) <-> OpenSIPS/RTPProxy (192.168.2.5) <-> Asterisk
> (192.168.2.10)
>
> I know that media is reaching the boxes since I see:
>
> OpenSIPS (192.168.2.5)
>
> 0.000000 192.168.2.10 -> 192.168.2.5  UDP 214 Source port: 24454
> Destination port: 20198
>    0.000099  192.168.2.5 -> 81.201.85.45 UDP 214 Source port: 39810
> Destination port: 13272
>    0.017956 192.168.2.10 -> 192.168.2.5  UDP 214 Source port: 24454
> Destination port: 20198
>    0.018028  192.168.2.5 -> 81.201.85.45 UDP 214 Source port: 39810
> Destination port: 13272
>    0.037760 192.168.2.10 -> 192.168.2.5  UDP 214 Source port: 24454
> Destination port: 20198
>    0.037814  192.168.2.5 -> 81.201.85.45 UDP 214 Source port: 39810
> Destination port: 13272
>
>
> Asterisk CLI (192.168.2.10)
>
> Sent RTP P2P packet to 192.168.2.5:20198 (type 00, len 000160)
> Sent RTP P2P packet to 192.168.2.5:20198 (type 00, len 000160)
> Sent RTP P2P packet to 192.168.2.5:20198 (type 00, len 000160)
> Sent RTP P2P packet to 192.168.2.5:20198 (type 00, len 000160)
> Sent RTP P2P packet to 192.168.2.5:20198 (type 00, len 000160)
> Sent RTP P2P packet to 192.168.2.5:20198 (type 00, len 000160)
> Sent RTP P2P packet to 192.168.2.5:20198 (type 00, len 000160)
>
> RTPProxy Messages:
>
> INFO:handle_command: new session
> KN74JOEJTRFDVOR3PEH7I5XGBA at 81.201.85.45, tag 86219;1 requested, type
> strong
> INFO:handle_command: new session on a port 20198 created, tag 86219;1
> INFO:handle_command: pre-filling caller's address with 81.201.85.45:13272
> INFO:handle_command: lookup on ports 20198/39810, session timer restarted
> INFO:handle_command: pre-filling callee's address with 192.168.2.10:24454
> INFO:handle_delete: forcefully deleting session 1 on ports 20198/39810
> INFO:remove_session: RTP stats: 86 in from callee, 0 in from caller,
> 86 relayed, 0 dropped
> INFO:remove_session: RTCP stats: 0 in from callee, 0 in from caller, 0
> relayed, 0 dropped
> INFO:remove_session: session on ports 20198/39810 is cleaned up
>
>
> It says 86 in from callee but we do not even have incoming audio. I'm
> pretty sure it's "rtpproxy_offer/answer" issue so bellow is my
> configuration:
>
> route[1] {
>                  xlog("Start Call Route For: [ fu=$fu/ tu=$tu /ru=$ru/
> ci=$ci]\n");
>
>                  if (has_body("application/sdp")) {
>                          xlog("Has SDP: $fu\n");
>                          rtpproxy_offer();
>                  }
> }
>
> onreply_route[1] {
>          xlog("Reply Route 1: [ fu=$fu/ tu=$tu /ru=$ru/ ci=$ci]\n");
>          if (has_body("application/sdp")) {
>                  xlog("Answering  RTP Proxy: $fu\n");
>                  rtpproxy_answer();
>        }
> }
>
> Your help is greatly appreciated,
>
> Nick.
>
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