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

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@2.6.7.9 SIP/2.0. Via: SIP/2.0/UDP 8.21.8.24:5060;branch=z9hG4bK69c359bd;rport. From: "19195551212" <sip:19195551212@8.21.8.24>;tag=as6869d7f8. To: <sip:1001@2.6.7.9>. Contact: <sip:19195551212@8.21.8.24>. Call-ID: 41d92a2106bd8b50595d335717906399(a)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@8.21.8.24>;tag=as6869d7f8. To: <sip:1001@2.6.7.9>. Call-ID: 41d92a2106bd8b50595d335717906399(a)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@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@8.21.8.24>;tag=as6869d7f8. To: <sip:1001@2.6.7.9>. Contact: <sip:19195551212@8.21.8.24>. Call-ID: 41d92a2106bd8b50595d335717906399(a)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(a)8.21.8.24. CSeq: 102 INVITE. From: <sip:19195551212@8.21.8.24>;tag=as6869d7f8. To: "ericp"<sip:1001@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(a)8.21.8.24. CSeq: 102 INVITE. From: <sip:19195551212@8.21.8.24>;tag=as6869d7f8. Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>. To: "ericp"<sip:1001@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(a)8.21.8.24. CSeq: 102 INVITE. From: <sip:19195551212@8.21.8.24>;tag=as6869d7f8. Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>. To: "ericp"<sip:1001@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(a)8.21.8.24. Content-Type: application/sdp. CSeq: 102 INVITE. From: <sip:19195551212@8.21.8.24>;tag=as6869d7f8. Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>. To: "ericp"<sip:1001@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(a)8.21.8.24. Content-Type: application/sdp. CSeq: 102 INVITE. From: <sip:19195551212@8.21.8.24>;tag=as6869d7f8. Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>. To: "ericp"<sip:1001@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(a)8.21.8.24. Content-Type: application/sdp. CSeq: 102 INVITE. From: <sip:19195551212@8.21.8.24>;tag=as6869d7f8. Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>. To: "ericp"<sip:1001@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(a)8.21.8.24. Content-Type: application/sdp. CSeq: 102 INVITE. From: <sip:19195551212@8.21.8.24>;tag=as6869d7f8. Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>. To: "ericp"<sip:1001@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(a)8.21.8.24. Content-Type: application/sdp. CSeq: 102 INVITE. From: <sip:19195551212@8.21.8.24>;tag=as6869d7f8. Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>. To: "ericp"<sip:1001@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(a)8.21.8.24. Content-Type: application/sdp. CSeq: 102 INVITE. From: <sip:19195551212@8.21.8.24>;tag=as6869d7f8. Record-Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>. To: "ericp"<sip:1001@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@8.21.8.24 SIP/2.0. Content-Length: 0. Contact: <sip:192.168.2.3:5060>. Call-ID: 41d92a2106bd8b50595d335717906399(a)8.21.8.24. Max-Forwards: 70. CSeq: 1 BYE. From: <sip:1001@2.6.7.9>;tag=35794812523426. Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>. To: <sip:19195551212@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@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(a)8.21.8.24. Max-Forwards: 69. CSeq: 1 BYE. From: <sip:1001@2.6.7.9>;tag=35794812523426. To: <sip:19195551212@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@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(a)8.21.8.24. Max-Forwards: 69. CSeq: 1 BYE. From: <sip:1001@2.6.7.9>;tag=35794812523426. To: <sip:19195551212@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@8.21.8.24 SIP/2.0. Content-Length: 0. Contact: <sip:192.168.2.3:5060>. Call-ID: 41d92a2106bd8b50595d335717906399(a)8.21.8.24. Max-Forwards: 70. CSeq: 1 BYE. From: <sip:1001@2.6.7.9>;tag=35794812523426. Route: <sip:192.168.2.10;lr=on;ftag=as6869d7f8>. To: <sip:19195551212@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@2.6.7.9>;tag=35794812523426. To: <sip:19195551212@8.21.8.24>;tag=as6869d7f8. Call-ID: 41d92a2106bd8b50595d335717906399(a)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@2.6.7.9>;tag=35794812523426. To: <sip:19195551212@8.21.8.24>;tag=as6869d7f8. Call-ID: 41d92a2106bd8b50595d335717906399(a)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