[OpenSER-Users] SIP Trunk doesn't response to 200OK with an ACK

Eric Phetteplace ericp at nextivr.com
Sun Feb 17 16:45:57 CET 2008 

Hello,

Here's the results of an ngrep command.  It is showing a situation where I
make a call on the PSTN to a DID, which terminates on my SIP Trunk.  OpenSER
receives the INVITE, etc. and I answer with my SIP phone, my phone OKs to
OpenSER, OpenSER OKs to the SIP Trunk, but the SIP Trunk never ACKS.  What
causes this?

Thanks,

Eric

interface: eth0 (192.168.2.0/255.255.255.0)
filter: (ip) and ( port 5060 )
#
U 8.21.8.24:5060 -> 192.168.2.10:5060
INVITE sip:1001 at 2.6.7.9 SIP/2.0.
Via: SIP/2.0/UDP 8.21.8.24:5060;branch=z9hG4bK69c359bd;rport.
From: "19195551212" <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
To: <sip:1001 at 2.6.7.9>.
Contact: <sip:19195551212 at 8.21.8.24>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
CSeq: 102 INVITE.
User-Agent: Vox Callcontrol.
Max-Forwards: 70.
Date: Sun, 17 Feb 2008 15:37:23 GMT.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Content-Type: application/sdp.
Content-Length: 311.
.
v=0.
o=root 25921 25921 IN IP4 8.21.8.24.
s=session.
c=IN IP4 8.21.8.24.
t=0 0.
m=audio 15994 RTP/AVP 0 8 18 101.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

#
U 192.168.2.10:5060 -> 8.21.8.24:5060
SIP/2.0 100 Giving a try.
Via: SIP/2.0/UDP 8.21.8.24:5060;branch=z9hG4bK69c359bd;rport=5060.
From: "19195551212" <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
To: <sip:1001 at 2.6.7.9>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
CSeq: 102 INVITE.
Server: OpenSER (1.3.0-notls (i386/linux)).
Content-Length: 0.
.

#
U 192.168.2.10:5060 -> 192.168.2.3:5060
INVITE sip:1001 at 192.168.2.3 SIP/2.0.
Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>.
Via: SIP/2.0/UDP 192.168.2.10;branch=z9hG4bKd949.f8032901.0.
Via: SIP/2.0/UDP 8.21.8.24:5060;branch=z9hG4bK69c359bd;rport=5060.
From: "19195551212" <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
To: <sip:1001 at 2.6.7.9>.
Contact: <sip:19195551212 at 8.21.8.24>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
CSeq: 102 INVITE.
User-Agent: Vox Callcontrol.
Max-Forwards: 69.
Date: Sun, 17 Feb 2008 15:37:23 GMT.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Content-Type: application/sdp.
Content-Length: 329.
P-hint: usrloc applied.
.
v=0.
o=root 25921 25921 IN IP4 8.21.8.24.
s=session.
c=IN IP4 192.168.2.10.
t=0 0.
m=audio 35058 RTP/AVP 0 8 18 101.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.
a=nortpproxy:yes.

#
U 192.168.2.3:5060 -> 192.168.2.10:5060
SIP/2.0 100 Trying.
Content-Length: 0.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
CSeq: 102 INVITE.
From: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
To: "ericp"<sip:1001 at 2.6.7.9>;tag=35794812523426.
Server: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP 192.168.2.10;branch=z9hG4bKd949.f8032901.0,SIP/2.0/UDP
8.21.8.24:5060;rport=5060;branch=z9hG4bK69c359bd.
.

#
U 192.168.2.3:5060 -> 192.168.2.10:5060
SIP/2.0 180 Ringing.
Content-Length: 0.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
CSeq: 102 INVITE.
From: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>.
To: "ericp"<sip:1001 at 2.6.7.9>;tag=35794812523426.
Server: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP 192.168.2.10;branch=z9hG4bKd949.f8032901.0,SIP/2.0/UDP
8.21.8.24:5060;rport=5060;branch=z9hG4bK69c359bd.
.

#
U 192.168.2.10:5060 -> 8.21.8.24:5060
SIP/2.0 180 Ringing.
Content-Length: 0.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
CSeq: 102 INVITE.
From: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>.
To: "ericp"<sip:1001 at 2.6.7.9>;tag=35794812523426.
Server: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP 8.21.8.24:5060;rport=5060;branch=z9hG4bK69c359bd.
.

#
U 192.168.2.3:5060 -> 192.168.2.10:5060
SIP/2.0 200 OK.
Content-Length: 217.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
Content-Type: application/sdp.
CSeq: 102 INVITE.
From: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>.
To: "ericp"<sip:1001 at 2.6.7.9>;tag=35794812523426.
Server: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP 192.168.2.10;branch=z9hG4bKd949.f8032901.0,SIP/2.0/UDP
8.21.8.24:5060;rport=5060;branch=z9hG4bK69c359bd.
.
v=0.
o=- 3412233443 3412233443 IN IP4 192.168.2.3.
s=SJphone.
c=IN IP4 192.168.2.3.
t=0 0.
a=direction:active.
m=audio 49162 RTP/AVP 0 100.
a=rtpmap:0 PCMU/8000.
a=rtpmap:100 telephone-event/8000.
a=fmtp:100 0-11,16.

#
U 192.168.2.10:5060 -> 8.21.8.24:5060
SIP/2.0 200 OK.
Content-Length: 236.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
Content-Type: application/sdp.
CSeq: 102 INVITE.
From: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>.
To: "ericp"<sip:1001 at 2.6.7.9>;tag=35794812523426.
Server: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP 8.21.8.24:5060;rport=5060;branch=z9hG4bK69c359bd.
.
v=0.
o=- 3412233443 3412233443 IN IP4 192.168.2.3.
s=SJphone.
c=IN IP4 192.168.2.10.
t=0 0.
a=direction:active.
m=audio 35060 RTP/AVP 0 100.
a=rtpmap:0 PCMU/8000.
a=rtpmap:100 telephone-event/8000.
a=fmtp:100 0-11,16.
a=nortpproxy:yes.

#
U 192.168.2.3:5060 -> 192.168.2.10:5060
SIP/2.0 200 OK.
Content-Length: 217.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
Content-Type: application/sdp.
CSeq: 102 INVITE.
From: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>.
To: "ericp"<sip:1001 at 2.6.7.9>;tag=35794812523426.
Server: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP 192.168.2.10;branch=z9hG4bKd949.f8032901.0,SIP/2.0/UDP
8.21.8.24:5060;rport=5060;branch=z9hG4bK69c359bd.
.
v=0.
o=- 3412233443 3412233443 IN IP4 192.168.2.3.
s=SJphone.
c=IN IP4 192.168.2.3.
t=0 0.
a=direction:active.
m=audio 49162 RTP/AVP 0 100.
a=rtpmap:0 PCMU/8000.
a=rtpmap:100 telephone-event/8000.
a=fmtp:100 0-11,16.

#
U 192.168.2.10:5060 -> 8.21.8.24:5060
SIP/2.0 200 OK.
Content-Length: 236.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
Content-Type: application/sdp.
CSeq: 102 INVITE.
From: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>.
To: "ericp"<sip:1001 at 2.6.7.9>;tag=35794812523426.
Server: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP 8.21.8.24:5060;rport=5060;branch=z9hG4bK69c359bd.
.
v=0.
o=- 3412233443 3412233443 IN IP4 192.168.2.3.
s=SJphone.
c=IN IP4 192.168.2.10.
t=0 0.
a=direction:active.
m=audio 35060 RTP/AVP 0 100.
a=rtpmap:0 PCMU/8000.
a=rtpmap:100 telephone-event/8000.
a=fmtp:100 0-11,16.
a=nortpproxy:yes.

#
U 192.168.2.3:5060 -> 192.168.2.10:5060
SIP/2.0 200 OK.
Content-Length: 217.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
Content-Type: application/sdp.
CSeq: 102 INVITE.
From: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>.
To: "ericp"<sip:1001 at 2.6.7.9>;tag=35794812523426.
Server: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP 192.168.2.10;branch=z9hG4bKd949.f8032901.0,SIP/2.0/UDP
8.21.8.24:5060;rport=5060;branch=z9hG4bK69c359bd.
.
v=0.
o=- 3412233443 3412233443 IN IP4 192.168.2.3.
s=SJphone.
c=IN IP4 192.168.2.3.
t=0 0.
a=direction:active.
m=audio 49162 RTP/AVP 0 100.
a=rtpmap:0 PCMU/8000.
a=rtpmap:100 telephone-event/8000.
a=fmtp:100 0-11,16.

#
U 192.168.2.10:5060 -> 8.21.8.24:5060
SIP/2.0 200 OK.
Content-Length: 236.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
Content-Type: application/sdp.
CSeq: 102 INVITE.
From: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>.
To: "ericp"<sip:1001 at 2.6.7.9>;tag=35794812523426.
Server: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP 8.21.8.24:5060;rport=5060;branch=z9hG4bK69c359bd.
.
v=0.
o=- 3412233443 3412233443 IN IP4 192.168.2.3.
s=SJphone.
c=IN IP4 192.168.2.10.
t=0 0.
a=direction:active.
m=audio 35060 RTP/AVP 0 100.
a=rtpmap:0 PCMU/8000.
a=rtpmap:100 telephone-event/8000.
a=fmtp:100 0-11,16.
a=nortpproxy:yes.

#
U 192.168.2.3:5060 -> 192.168.2.10:5060
BYE sip:19195551212 at 8.21.8.24 SIP/2.0.
Content-Length: 0.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
Max-Forwards: 70.
CSeq: 1 BYE.
From: <sip:1001 at 2.6.7.9>;tag=35794812523426.
Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>.
To: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
User-Agent: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP
192.168.2.3;rport;branch=z9hG4bKc0a802030131c9b147b80e6900007d3200000019.
.

#
U 192.168.2.10:5060 -> 8.21.8.24:5060
BYE sip:19195551212 at 8.21.8.24 SIP/2.0.
Record-Route: <sip:192.168.2.10;lr=on;ftag=35794812523426>.
Content-Length: 0.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
Max-Forwards: 69.
CSeq: 1 BYE.
From: <sip:1001 at 2.6.7.9>;tag=35794812523426.
To: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
User-Agent: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP 192.168.2.10;branch=z9hG4bK3067.f0fdf201.0.
Via: SIP/2.0/UDP
192.168.2.3;rport=5060;branch=z9hG4bKc0a802030131c9b147b80e6900007d320000001
9.
P-hint: rr-enforced.
.

#
U 192.168.2.10:5060 -> 8.21.8.24:5060
BYE sip:19195551212 at 8.21.8.24 SIP/2.0.
Record-Route: <sip:192.168.2.10;lr=on;ftag=35794812523426>.
Content-Length: 0.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
Max-Forwards: 69.
CSeq: 1 BYE.
From: <sip:1001 at 2.6.7.9>;tag=35794812523426.
To: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
User-Agent: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP 192.168.2.10;branch=z9hG4bK3067.f0fdf201.0.
Via: SIP/2.0/UDP
192.168.2.3;rport=5060;branch=z9hG4bKc0a802030131c9b147b80e6900007d320000001
9.
P-hint: rr-enforced.
.

#
U 192.168.2.3:5060 -> 192.168.2.10:5060
BYE sip:19195551212 at 8.21.8.24 SIP/2.0.
Content-Length: 0.
Contact: <sip:192.168.2.3:5060>.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
Max-Forwards: 70.
CSeq: 1 BYE.
From: <sip:1001 at 2.6.7.9>;tag=35794812523426.
Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>.
To: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
User-Agent: SJphone/1.50.271d (SJ Labs).
Via: SIP/2.0/UDP
192.168.2.3;rport;branch=z9hG4bKc0a802030131c9b147b80e6900007d3200000019.
.

#
U 8.21.8.24:5060 -> 192.168.2.10:5060
SIP/2.0 481 Call leg/transaction does not exist.
Via: SIP/2.0/UDP
192.168.2.10;branch=z9hG4bK3067.f0fdf201.0;received=2.6.7.9.
Via: SIP/2.0/UDP
192.168.2.3;rport=5060;branch=z9hG4bKc0a802030131c9b147b80e6900007d320000001
9.
From: <sip:1001 at 2.6.7.9>;tag=35794812523426.
To: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
CSeq: 1 BYE.
User-Agent: Vox Callcontrol.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Content-Length: 0.
.

#
U 192.168.2.10:5060 -> 192.168.2.3:5060
SIP/2.0 481 Call leg/transaction does not exist.
Via: SIP/2.0/UDP
192.168.2.3;rport=5060;branch=z9hG4bKc0a802030131c9b147b80e6900007d320000001
9.
From: <sip:1001 at 2.6.7.9>;tag=35794812523426.
To: <sip:19195551212 at 8.21.8.24>;tag=as6869d7f8.
Call-ID: 41d92a2106bd8b50595d335717906399 at 8.21.8.24.
CSeq: 1 BYE.
User-Agent: Vox Callcontrol.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Content-Length: 0.
.

exit
18 received, 0 dropped

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