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:[EMAIL PROTECTED] 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:[EMAIL PROTECTED]:26380>.
To: "mobilia"<sip:[EMAIL PROTECTED]>.
From: "Nick Warr - Mobilia"<sip:[EMAIL PROTECTED]>;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:[EMAIL PROTECTED]>.
From: "Nick Warr - Mobilia"<sip:[EMAIL PROTECTED]>;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:[EMAIL PROTECTED]
out_uri=sip:[EMAIL PROTECTED]:5060 via_cnt==1".
.
#
U 89.x.x.16:5060 -> x.x.x.53:5060
INVITE sip:[EMAIL PROTECTED]: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:[EMAIL PROTECTED]:26380>.
To: "mobilia"<sip:[EMAIL PROTECTED]>.
From: "Nick Warr - Mobilia"<sip:[EMAIL PROTECTED]>;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:[EMAIL PROTECTED]>;tag=173a892a.
To: "mobilia" <sip:[EMAIL PROTECTED]>.
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:[EMAIL PROTECTED]>;tag=3372418527-183443.
From: "Nick Warr - Mobilia" <sip:[EMAIL PROTECTED]>;tag=173a892a.
Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
CSeq: 1 INVITE.
Contact: sip:[EMAIL PROTECTED]: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:[EMAIL PROTECTED]>;tag=3372418527-183443.
From: "Nick Warr - Mobilia" <sip:[EMAIL PROTECTED]>;tag=173a892a.
Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
CSeq: 1 INVITE.
Contact: sip:[EMAIL PROTECTED]: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:[EMAIL PROTECTED]>;tag=3372418527-183443.
From: "Nick Warr - Mobilia" <sip:[EMAIL PROTECTED]>;tag=173a892a.
Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
CSeq: 1 INVITE.
Contact: sip:[EMAIL PROTECTED]: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:[EMAIL PROTECTED]>;tag=3372418527-183443.
From: "Nick Warr - Mobilia" <sip:[EMAIL PROTECTED]>;tag=173a892a.
Call-ID: N2YyNGJmMjBhZjYwMjY3OWExMmVmYzYyNDhjMTgzNzY..
CSeq: 1 INVITE.
Contact: sip:[EMAIL PROTECTED]: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:[EMAIL PROTECTED]: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:[EMAIL PROTECTED]:26380>.
To: "mobilia"<sip:[EMAIL PROTECTED]>;tag=3372418527-183443.
From: "Nick Warr - Mobilia"<sip:[EMAIL PROTECTED]>;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:[EMAIL PROTECTED]: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:[EMAIL PROTECTED]:26380>.
To: "mobilia"<sip:[EMAIL PROTECTED]>;tag=3372418527-183443.
From: "Nick Warr - Mobilia"<sip:[EMAIL PROTECTED]>;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:[EMAIL PROTECTED]: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:[EMAIL PROTECTED]:26380>.
To: "mobilia"<sip:[EMAIL PROTECTED]>;tag=3372418527-183443.
From: "Nick Warr - Mobilia"<sip:[EMAIL PROTECTED]>;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:[EMAIL PROTECTED]: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:[EMAIL PROTECTED]:26380>.
To: "mobilia"<sip:[EMAIL PROTECTED]>;tag=3372418527-183443.
From: "Nick Warr - Mobilia"<sip:[EMAIL PROTECTED]>;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:[EMAIL PROTECTED]: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:[EMAIL PROTECTED]:26380>.
To: "mobilia"<sip:[EMAIL PROTECTED]>;tag=3372418527-183443.
From: "Nick Warr - Mobilia"<sip:[EMAIL PROTECTED]>;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:[EMAIL PROTECTED]: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:[EMAIL PROTECTED]:26380>.
To: "mobilia"<sip:[EMAIL PROTECTED]>;tag=3372418527-183443.
From: "Nick Warr - Mobilia"<sip:[EMAIL PROTECTED]>;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:[EMAIL PROTECTED]>;tag=173a892a.
To: "mobilia" <sip:[EMAIL PROTECTED]>;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:[EMAIL PROTECTED]>;tag=173a892a.
To: "mobilia" <sip:[EMAIL PROTECTED]>;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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