[OpenSIPS-Users] RTP Proxy Help

[Kristian F. Høgh]

Hi Jim,

I have no facts, but a couple of guesses/questions/hints.

When a UAC receives a negative answer (in your case 503), will it proceed the call and play the sound? Or will it terminate the dialog/transaction?
Is the SDP in the 503 answer existing and correct? Can opensips/rtpproxy add SDP? Normally it changes an  existing SDP.

I would start troubleshooting by sending "183 progress" instead of 503.
If the SDP is correct, I guess it should work.
If SDP is missing or incorrect, you can add an UAS (eg. asterisk and make it play the anouncement using progress() before playback(file, noanswer)

Good luck.
Kristian Høgh


On Thursday 10 March 2016 06:26:57 Jim DeVito wrote:
> So it seems I have not had any luck getting rtpproxy to play an
> announcement upon receipt of the initial INVITE with SDP.
> 
> Here is what I have when processing the initial invite from the client.
> 
> rtpproxy_offer("r","");
> rtpproxy_stream2uac("/var/rtpproxy/audio/calling-area-error", "2");
> send_reply("503","No Routes");
> 
> rtpproxy debug shows this on the INVITE before any reply is sent to the
> client.
> 
> DBUG:get_command:GLOBAL: received command "19394_5 Uc0,101
> 2494595e5addcc12036b84f75312af3f at 66.228.40.119:5060 66.228.40.119 10148
> as1d2ea467;1"
> INFO:rtpp_command_ul_handle:GLOBAL: new session
> 2494595e5addcc12036b84f75312af3f at 66.228.40.119:5060, tag as1d2ea467;1
> requested, type strong
> INFO:rtpp_command_ul_handle:2494595e5addcc12036b84f75312af3f at 66.228.40.119:5
> 060: new session on a port 37018 created, tag as1d2ea467;1
> INFO:rtpp_command_ul_handle:2494595e5addcc12036b84f75312af3f at 66.228.40.119:5
> 060: pre-filling caller's address with 66.228.40.119:10148
> DBUG:rtpc_doreply:GLOBAL: sending reply "37018
> "
> DBUG:get_command:GLOBAL: received command "19394_6 P2
> 2494595e5addcc12036b84f75312af3f at 66.228.40.119:5060
> /var/rtpproxy/audio/calling-area-error session as1d2ea467;1 "
> INFO:handle_play:2494595e5addcc12036b84f75312af3f at 66.228.40.119:5060: 2
> times playing prompt /var/rtpproxy/audio/calling-area-error codec 0
> DBUG:rtpc_doreply:GLOBAL: sending reply "0
> 
> Looks like it gets the Address and port from the INVITE SDP and sets
> them just fine. Then it even looks like it is playing the file. But no
> RTP is ever sent to the client and the next line that sends the 503 is
> immediately processed ending the call.
> 
> Then rtpproxy will timeout like so.
> 
> INFO:process_rtp:2494595e5addcc12036b84f75312af3f at 66.228.40.119:5060:
> session timeout
> INFO:remove_session:2494595e5addcc12036b84f75312af3f at 66.228.40.119:5060:
> RTP stats: 0 in from callee, 0 in from caller, 0 relayed, 0 dropped
> INFO:remove_session:2494595e5addcc12036b84f75312af3f at 66.228.40.119:5060:
> RTCP stats: 0 in from callee, 0 in from caller, 0 relayed, 0 dropped
> INFO:remove_session:2494595e5addcc12036b84f75312af3f at 66.228.40.119:5060:
> session on ports 37018/0 is cleaned up
> 
> Any insight as to what I may be doing wrong would be a big help.
> 
> Thanks!!