[Users] Problems with one sided audio..

Daniel-Constantin Mierla daniel at voice-system.ro
Wed Nov 15 13:00:22 CET 2006


The media IP of the SDP in the INVITE is not changed to the public, it 
stays private which means that it was not processed by nat traversal 
logic. There should be a mistake in the configuration script.

Cheers,
Daniel


On 11/13/06 18:26, nick wrote:
> I have a situation where I make a call to a pstn provider, everything 
> works correctly on the SIP level, INVITEs, OKs, ACKs and BYEs are all 
> passing correctly through my server, but for some reason, I'm unable 
> to get audio to work correctly on both sides.
>
> At the moment I'm using Openser 1.1.0 with mediaproxy (and a slightly 
> modified openser.cfg based on the mediaproxy one on the openser site, 
> I have a some options for accounting and forwarding to the pstn 
> gateway)..
>
> 89.x.x.16 is my openser server.
>
> 89.x.x.8 is my NAT firewall, which is portforwarding all UDP from 5000 
> to 30000 to 192.168.1.67 (my internal machine, with X-Lite).
>
> x.x.x.53 is my PSTN provider's SIP server
>
> x.x.x.3 is my PSTN provider's media server.
>
> this is the SIP dialog:
>
> U 89.x.x.8:26380 -> 89.x.x.16:5060
> INVITE sip:00390721111111 at pstnprovider.com SIP/2.0.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;branch=z9hG4bK-d87543-cb65401207770316-1--d87543-;rport. 
>
> Max-Forwards: 70.
> Contact: <sip:nick at 89.x.x.8:26380>.
> To: "mobilia"<sip:00390721111111 at pstnprovider.com>.
> From: "Nick Warr - Mobilia"<sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 1 INVITE.
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, 
> SUBSCRIBE, INFO.
> Content-Type: application/sdp.
> User-Agent: X-Lite release 1006e stamp 34025.
> Content-Length: 261.
> .
> v=0.
> o=- 1 2 IN IP4 192.168.1.67.
> s=CounterPath X-Lite 3.0.
> c=IN IP4 192.168.1.67.
> t=0 0.
> m=audio 13234 RTP/AVP 0 98 3 101.
> a=alt:1 1 : AtyyaMHs +WwsY5o+ 192.168.1.67 13234.
> a=fmtp:101 0-15.
> a=rtpmap:98 iLBC/8000.
> a=rtpmap:101 telephone-event/8000.
> a=sendrecv.
>
> #
> U 89.x.x.16:5060 -> 89.x.x.8:26380
> SIP/2.0 100 trying -- your call is important to us.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;branch=z9hG4bK-d87543-cb65401207770316-1--d87543-;rport=26380;received=89.x.x.8. 
>
> To: "mobilia"<sip:00390721111111 at pstnprovider.com>.
> From: "Nick Warr - Mobilia"<sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 1 INVITE.
> Server: OpenSer (1.1.0-notls (x86_64/linux)).
> Content-Length: 0.
> Warning: 392 89.x.x.16:5060 "Noisy feedback tells:  pid=27910 
> req_src_ip=89.x.x.8 req_src_port=26380 
> in_uri=sip:00390721111111 at pstnprovider.com 
> out_uri=sip:00390721111111 at x.x.x.53:5060 via_cnt==1".
> .
>
> #
> U 89.x.x.16:5060 -> x.x.x.53:5060
> INVITE sip:00390721111111 at x.x.x.53:5060 SIP/2.0.
> Record-Route: <sip:89.x.x.16;lr=on;ftag=173a892a>.
> Via: SIP/2.0/UDP 89.x.x.16;branch=z9hG4bK860f.0d8bc646.0.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-cb65401207770316-1--d87543-;rport=26380. 
>
> Max-Forwards: 69.
> Contact: <sip:nick at 89.x.x.8:26380>.
> To: "mobilia"<sip:00390721111111 at pstnprovider.com>.
> From: "Nick Warr - Mobilia"<sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 1 INVITE.
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, 
> SUBSCRIBE, INFO.
> Content-Type: application/sdp.
> User-Agent: X-Lite release 1006e stamp 34025.
> Content-Length: 261.
> P-hint: outbound.
> .
> v=0.
> o=- 1 2 IN IP4 192.168.1.67.
> s=CounterPath X-Lite 3.0.
> c=IN IP4 192.168.1.67.
> t=0 0.
> m=audio 13234 RTP/AVP 0 98 3 101.
> a=alt:1 1 : AtyyaMHs +WwsY5o+ 192.168.1.67 13234.
> a=fmtp:101 0-15.
> a=rtpmap:98 iLBC/8000.
> a=rtpmap:101 telephone-event/8000.
> a=sendrecv.
>
> #
> U x.x.x.53:5060 -> 89.x.x.16:5060
> SIP/2.0 100 Trying.
> Via: SIP/2.0/UDP 89.x.x.16;branch=z9hG4bK860f.0d8bc646.0.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-cb65401207770316-1--d87543-;rport=26380. 
>
> From: "Nick Warr - Mobilia" <sip:nick at logycs.it>;tag=173a892a.
> To: "mobilia" <sip:00390721111111 at pstnprovider.com>.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 1 INVITE.
> Content-Length: 0.
> .
>
> #
> U 89.x.x.8:26380 -> 89.x.x.16:5060
> .
> .
>
> #
> U x.x.x.53:5060 -> 89.x.x.16:5060
> SIP/2.0 180 Ringing.
> To: "mobilia" 
> <sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> From: "Nick Warr - Mobilia" <sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 1 INVITE.
> Contact: sip:00390721111111 at x.x.x.53:5060.
> Content-Type: application/sdp.
> Via: SIP/2.0/UDP 89.x.x.16;branch=z9hG4bK860f.0d8bc646.0.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-cb65401207770316-1--d87543-;rport=26380. 
>
> Content-Length: 220.
> .
> v=0.
> o=fra006nex 1234 21616 IN IP4 x.x.x.3.
> s=sip call.
> c=IN IP4 x.x.x.3.
> t=0 0.
> m=audio 5946 RTP/AVP 0 101.
> a=rtpmap:0 PCMU/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
> a=sendrecv.
> a=maxptime:20.
>
> #
> U 89.x.x.16:5060 -> 89.x.x.8:26380
> SIP/2.0 180 Ringing.
> To: "mobilia" 
> <sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> From: "Nick Warr - Mobilia" <sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 1 INVITE.
> Contact: sip:00390721111111 at x.x.x.53:5060.
> Content-Type: application/sdp.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-cb65401207770316-1--d87543-;rport=26380. 
>
> Content-Length: 220.
> .
> v=0.
> o=fra006nex 1234 21616 IN IP4 x.x.x.3.
> s=sip call.
> c=IN IP4 x.x.x.3.
> t=0 0.
> m=audio 5946 RTP/AVP 0 101.
> a=rtpmap:0 PCMU/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
> a=sendrecv.
> a=maxptime:20.
>
> #
> U x.x.x.53:5060 -> 89.x.x.16:5060
> SIP/2.0 200 OK.
> To: "mobilia" 
> <sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> From: "Nick Warr - Mobilia" <sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 1 INVITE.
> Contact: sip:00390721111111 at x.x.x.53:5060.
> Content-Type: application/sdp.
> Via: SIP/2.0/UDP 89.x.x.16;branch=z9hG4bK860f.0d8bc646.0.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-cb65401207770316-1--d87543-;rport=26380. 
>
> Record-Route: <sip:89.x.x.16;lr=on;ftag=173a892a>.
> Content-Length: 220.
> .
> v=0.
> o=fra006nex 1234 21616 IN IP4 x.x.x.3.
> s=sip call.
> c=IN IP4 x.x.x.3.
> t=0 0.
> m=audio 5946 RTP/AVP 0 101.
> a=rtpmap:0 PCMU/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
> a=sendrecv.
> a=maxptime:20.
>
> #
> U 89.x.x.16:5060 -> 89.x.x.8:26380
> SIP/2.0 200 OK.
> To: "mobilia" 
> <sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> From: "Nick Warr - Mobilia" <sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 1 INVITE.
> Contact: sip:00390721111111 at x.x.x.53:5060.
> Content-Type: application/sdp.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-cb65401207770316-1--d87543-;rport=26380. 
>
> Record-Route: <sip:89.x.x.16;lr=on;ftag=173a892a>.
> Content-Length: 220.
> .
> v=0.
> o=fra006nex 1234 21616 IN IP4 x.x.x.3.
> s=sip call.
> c=IN IP4 x.x.x.3.
> t=0 0.
> m=audio 5946 RTP/AVP 0 101.
> a=rtpmap:0 PCMU/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
> a=sendrecv.
> a=maxptime:20.
>
> #
> U 89.x.x.8:26380 -> 89.x.x.16:5060
> ACK sip:00390721111111 at x.x.x.53:5060 SIP/2.0.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;branch=z9hG4bK-d87543-2f47cb445c504950-1--d87543-;rport. 
>
> Max-Forwards: 70.
> Route: <sip:89.x.x.16;lr;ftag=173a892a>.
> Contact: <sip:nick at 89.x.x.8:26380>.
> To: "mobilia"<sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> From: "Nick Warr - Mobilia"<sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 1 ACK.
> User-Agent: X-Lite release 1006e stamp 34025.
> Content-Length: 0.
> .
>
> #
> U 89.x.x.16:5060 -> x.x.x.53:5060
> ACK sip:00390721111111 at x.x.x.53:5060 SIP/2.0.
> Record-Route: <sip:89.x.x.16;lr=on;ftag=173a892a>.
> Via: SIP/2.0/UDP 89.x.x.16;branch=z9hG4bK860f.0d8bc646.2.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-2f47cb445c504950-1--d87543-;rport=26380. 
>
> Max-Forwards: 69.
> Contact: <sip:nick at 89.x.x.8:26380>.
> To: "mobilia"<sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> From: "Nick Warr - Mobilia"<sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 1 ACK.
> User-Agent: X-Lite release 1006e stamp 34025.
> Content-Length: 0.
> P-hint: rr-enforced.
>
> ....
> #
> U 89.x.x.16:5060 -> 89.x.x.8:26380
> ....
> #
> U 89.x.x.8:26380 -> 89.x.x.16:5060
> BYE sip:00390721111111 at x.x.x.53:5060 SIP/2.0.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;branch=z9hG4bK-d87543-31344e58af13955c-1--d87543-;rport. 
>
> Max-Forwards: 70.
> Route: <sip:89.x.x.16;lr;ftag=173a892a>.
> Contact: <sip:nick at 89.x.x.8:26380>.
> To: "mobilia"<sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> From: "Nick Warr - Mobilia"<sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 2 BYE.
> User-Agent: X-Lite release 1006e stamp 34025.
> Reason: SIP;description="User Hung Up".
> Content-Length: 0.
> .
>
> #
> U 89.x.x.16:5060 -> x.x.x.53:5060
> BYE sip:00390721111111 at x.x.x.53:5060 SIP/2.0.
> Record-Route: <sip:89.x.x.16;lr=on;ftag=173a892a>.
> Via: SIP/2.0/UDP 89.x.x.16;branch=z9hG4bK560f.bbdde784.0.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-31344e58af13955c-1--d87543-;rport=26380. 
>
> Max-Forwards: 69.
> Contact: <sip:nick at 89.x.x.8:26380>.
> To: "mobilia"<sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> From: "Nick Warr - Mobilia"<sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 2 BYE.
> User-Agent: X-Lite release 1006e stamp 34025.
> Reason: SIP;description="User Hung Up".
> Content-Length: 0.
> P-hint: rr-enforced.
> .
>
> #
> U 89.x.x.8:26380 -> 89.x.x.16:5060
> BYE sip:00390721111111 at x.x.x.53:5060 SIP/2.0.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;branch=z9hG4bK-d87543-31344e58af13955c-1--d87543-;rport. 
>
> Max-Forwards: 70.
> Route: <sip:89.x.x.16;lr;ftag=173a892a>.
> Contact: <sip:nick at 89.x.x.8:26380>.
> To: "mobilia"<sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> From: "Nick Warr - Mobilia"<sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 2 BYE.
> User-Agent: X-Lite release 1006e stamp 34025.
> Reason: SIP;description="User Hung Up".
> Content-Length: 0.
> .
>
> #
> U 89.x.x.16:5060 -> x.x.x.53:5060
> BYE sip:00390721111111 at x.x.x.53:5060 SIP/2.0.
> Record-Route: <sip:89.x.x.16;lr=on;ftag=173a892a>.
> Via: SIP/2.0/UDP 89.x.x.16;branch=z9hG4bK560f.bbdde784.0.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-31344e58af13955c-1--d87543-;rport=26380. 
>
> Max-Forwards: 69.
> Contact: <sip:nick at 89.x.x.8:26380>.
> To: "mobilia"<sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> From: "Nick Warr - Mobilia"<sip:nick at logycs.it>;tag=173a892a.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 2 BYE.
> User-Agent: X-Lite release 1006e stamp 34025.
> Reason: SIP;description="User Hung Up".
> Content-Length: 0.
> P-hint: rr-enforced.
> .
>
> #
> U x.x.x.53:5060 -> 89.x.x.16:5060
> SIP/2.0 200 OK.
> Via: SIP/2.0/UDP 89.x.x.16;branch=z9hG4bK560f.bbdde784.0.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-31344e58af13955c-1--d87543-;rport=26380. 
>
> From: "Nick Warr - Mobilia" <sip:nick at logycs.it>;tag=173a892a.
> To: "mobilia" 
> <sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 2 BYE.
> Content-Length: 0.
> .
>
> #
> U 89.x.x.16:5060 -> 89.x.x.8:26380
> SIP/2.0 200 OK.
> Via: SIP/2.0/UDP 
> 192.168.1.67:26380;received=89.x.x.8;branch=z9hG4bK-d87543-31344e58af13955c-1--d87543-;rport=26380. 
>
> From: "Nick Warr - Mobilia" <sip:nick at logycs.it>;tag=173a892a.
> To: "mobilia" 
> <sip:00390721111111 at pstnprovider.com>;tag=3372418527-183443.
> Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
> CSeq: 2 BYE.
> Content-Length: 0.
> .
>
> #
> U 89.x.x.16:5060 -> 89.x.x.8:26380
> ....
> #
>
>
> Can anyone see something irregular in this dialog?
>
> Or do I need to start beating up my firewall/NAT ?
>
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>




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