I will attach a full SIP conversation to this e-mail, but here is the summary of what seems to be happening.
I place a call from my phone here, behind NAT. This contacts a SER server with nathelper/rtpproxy out on the 'net, which then forwards the requests to Masergy (www.masergy.com), who provide us with LD VoIP service. Everything proceeds fine until the "OK" reply from Masergy signalling the call has been answered. Here's the transaction there:
Masergy port 29436 -> SER port 5060 "OK" SER port 5060 -> My Phone port 5060 "OK" My Phone port 5060 -> SER port 5060 "ACK" SER port 5060 -> Masergy port 29436 "ACK"
Masergy never receives that last packet.
However, my phone receives all of the information it needs to establish the RTP connection. It does so, and the call appears to be working fine. Meanwhile, Masergy's SIP server continues to resend "SIP/2.0 200 OK" messages (still from port 29436) every few seconds, waiting for a reply. After ~35 seconds of not hearing back, it assumes the worst and sends a "BYE", tearing down a call that was going swell, as far as the two humans involved were concerned.
I've spoken with the relevant tech at Masergy, and their determination is that our SIP proxy should be sending all SIP traffic to port 5060, regardless of what they may be transmitting from.
I just built the very latest CVS version of SER (0.8.99-dev8), and am seeing the same behavior. Is this a protocol violation on either side? (Transmitting to a non-5060 port, or not listening for a reply on a port that was just transmitted from). Is there a way to force SER to always use 5060? (Which itself probably breaks protocol for some cases, which we aren't currently dealing with).
Thank you for any info.
Jeremy
There are several issues: 1. Your termination provider uses asymetric signaling: it sends packets from port 29436, but assumes to receive packets at port 5060. This is fine, no violation. If you take a look at the Contact: header in the 183 and 200 response from Masergy, you can see that it announces port 5060 to receive SIP messages.
2. You are using rewrite_contact in your ser.cfg. This is necessary to rewrite the Contact: header. This works only if the SIP UAs support symmetric signaling. As Masergy does not support symetric signaling you must not do 'rewrite_contact' on messages from Masergy.
Solution: use rewrite_contact only on messages which come from your clients, not on messages from Masergy.
regards, klaus
Jeremy M. Dolan wrote:
I will attach a full SIP conversation to this e-mail, but here is the summary of what seems to be happening.
I place a call from my phone here, behind NAT. This contacts a SER server with nathelper/rtpproxy out on the 'net, which then forwards the requests to Masergy (www.masergy.com), who provide us with LD VoIP service. Everything proceeds fine until the "OK" reply from Masergy signalling the call has been answered. Here's the transaction there:
Masergy port 29436 -> SER port 5060 "OK" SER port 5060 -> My Phone port 5060 "OK" My Phone port 5060 -> SER port 5060 "ACK" SER port 5060 -> Masergy port 29436 "ACK"
Masergy never receives that last packet.
However, my phone receives all of the information it needs to establish the RTP connection. It does so, and the call appears to be working fine. Meanwhile, Masergy's SIP server continues to resend "SIP/2.0 200 OK" messages (still from port 29436) every few seconds, waiting for a reply. After ~35 seconds of not hearing back, it assumes the worst and sends a "BYE", tearing down a call that was going swell, as far as the two humans involved were concerned.
I've spoken with the relevant tech at Masergy, and their determination is that our SIP proxy should be sending all SIP traffic to port 5060, regardless of what they may be transmitting from.
I just built the very latest CVS version of SER (0.8.99-dev8), and am seeing the same behavior. Is this a protocol violation on either side? (Transmitting to a non-5060 port, or not listening for a reply on a port that was just transmitted from). Is there a way to force SER to always use 5060? (Which itself probably breaks protocol for some cases, which we aren't currently dealing with).
Thank you for any info.
Jeremy
This trace was created with ngrep: ./ngrep -W byline -t -v 'Unauthorized|REGISTER' port 5060 > output
Phone numbers and IP addresses have been changed to protect the guilty: 192.168.0.10 = my phone's IP (1918 address) 1.1.1.1 = my firewall's IP (where SER would see my traffic coming from) 2.2.2.2 = SER server's IP 8.8.8.8 = Masergy's SIP signalling server 9.9.9.9 = (one of) Masergy's RTP media servers (seen only in SDP packets) 4445555555 = SIP phone's phone number 6667777777 = PSTN phone number being called
interface: eth0 (2.2.2.0/255.255.255.128) filter: ip and ( port 5060 ) don't match: Unauthorized|REGISTER ############# U 2004/10/07 10:42:31.500815 1.1.1.1:5060 -> 2.2.2.2:5060 INVITE sip:6667777777@2.2.2.2;user=phone SIP/2.0. Via: SIP/2.0/UDP 192.168.0.10:5060;branch=z9hG4bK4057b0b1. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:20 GMT. CSeq: 101 INVITE. User-Agent: CSCO/6. Contact: sip:4445555555@192.168.0.10:5060. Expires: 180. Content-Type: application/sdp. Content-Length: 249. Accept: application/sdp. . v=0. o=Cisco-SIPUA 27241 24599 IN IP4 192.168.0.10. s=SIP Call. c=IN IP4 192.168.0.10. t=0 0. m=audio 25432 RTP/AVP 0 8 18 101. a=rtpmap:0 PCMU/8000. a=rtpmap:8 PCMA/8000. a=rtpmap:18 G729/8000. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15.
# U 2004/10/07 10:42:31.510470 2.2.2.2:5060 -> 1.1.1.1:5060 SIP/2.0 100 trying -- your call is important to us. Via: SIP/2.0/UDP 192.168.0.10:5060;branch=z9hG4bK4057b0b1;rport=5060;received=1.1.1.1. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Server: Sip EXpress router (0.8.99-dev8 (i386/linux)). Content-Length: 0. Warning: 392 2.2.2.2:5060 "Noisy feedback tells: pid=12364 req_src_ip=1.1.1.1 req_src_port=5060 in_uri=sip:6667777777@64.47.100.23;user=phone out_uri=sip:17732719830@8.8.8.8:5060;user=phone via_cnt==1". .
# U 2004/10/07 10:42:31.510621 2.2.2.2:5060 -> 8.8.8.8:5060 INVITE sip:16667777777@8.8.8.8:5060;user=phone SIP/2.0. Max-Forwards: 10. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKc4b2.5492f2f6.0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:20 GMT. CSeq: 101 INVITE. User-Agent: CSCO/6. Contact: sip:4445555555@1.1.1.1:5060. Expires: 180. Content-Type: application/sdp. Content-Length: 266. Accept: application/sdp. . v=0. o=Cisco-SIPUA 27241 24599 IN IP4 192.168.0.10. s=SIP Call. c=IN IP4 2.2.2.2. t=0 0. m=audio 35018 RTP/AVP 0 8 18 101. a=rtpmap:0 PCMU/8000. a=rtpmap:8 PCMA/8000. a=rtpmap:18 G729/8000. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=nortpproxy:yes.
# U 2004/10/07 10:42:31.568787 8.8.8.8:29430 -> 2.2.2.2:5060 SIP/2.0 100 Trying. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKc4b2.5492f2f6.0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Content-Length: 0. .
# U 2004/10/07 10:42:31.687397 2.2.2.2:5060 -> 1.1.1.1:5060 .... # U 2004/10/07 10:42:31.835105 8.8.8.8:29430 -> 2.2.2.2:5060 SIP/2.0 183 Session Progress. To: sip:6667777777@2.2.2.2;user=phone. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:5060. Content-Type: application/sdp. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKc4b2.5492f2f6.0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Content-Length: 157. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 9.9.9.9. t=0 0. m=audio 6376 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv.
# U 2004/10/07 10:42:31.835856 2.2.2.2:5060 -> 1.1.1.1:5060 SIP/2.0 183 Session Progress. To: sip:6667777777@2.2.2.2;user=phone. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:29430. Content-Type: application/sdp. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Content-Length: 178. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 2.2.2.2. t=0 0. m=audio 35020 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv. a=nortpproxy:yes.
# U 2004/10/07 10:42:36.335312 8.8.8.8:29436 -> 2.2.2.2:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:5060. Content-Type: application/sdp. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKc4b2.5492f2f6.0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 157. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 9.9.9.9. t=0 0. m=audio 6376 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv.
# U 2004/10/07 10:42:36.336250 2.2.2.2:5060 -> 1.1.1.1:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:29436. Content-Type: application/sdp. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 178. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 2.2.2.2. t=0 0. m=audio 35020 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv. a=nortpproxy:yes.
# U 2004/10/07 10:42:36.518975 1.1.1.1:5060 -> 2.2.2.2:5060 ACK sip:2.2.2.2:5060;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on SIP/2.0. Via: SIP/2.0/UDP 192.168.0.10:5060;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Route: sip:16667777777@8.8.8.8:29436. Content-Length: 0. .
# U 2004/10/07 10:42:36.520741 2.2.2.2:5060 -> 8.8.8.8:29436 ACK sip:16667777777@8.8.8.8:29436 SIP/2.0. Max-Forwards: 10. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Via: SIP/2.0/UDP 2.2.2.2;branch=0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Content-Length: 0. .
# U 2004/10/07 10:42:36.840296 8.8.8.8:29436 -> 2.2.2.2:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:5060. Content-Type: application/sdp. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKc4b2.5492f2f6.0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 157. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 9.9.9.9. t=0 0. m=audio 6376 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv.
# U 2004/10/07 10:42:36.841030 2.2.2.2:5060 -> 1.1.1.1:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:29436. Content-Type: application/sdp. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 178. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 2.2.2.2. t=0 0. m=audio 35020 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv. a=nortpproxy:yes.
# U 2004/10/07 10:42:36.933976 1.1.1.1:5060 -> 2.2.2.2:5060 ACK sip:2.2.2.2:5060;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on SIP/2.0. Via: SIP/2.0/UDP 192.168.0.10:5060;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Route: sip:16667777777@8.8.8.8:29436. Content-Length: 0. .
# U 2004/10/07 10:42:36.934396 2.2.2.2:5060 -> 8.8.8.8:29436 ACK sip:16667777777@8.8.8.8:29436 SIP/2.0. Max-Forwards: 10. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Via: SIP/2.0/UDP 2.2.2.2;branch=0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Content-Length: 0. .
# U 2004/10/07 10:42:37.840199 8.8.8.8:29436 -> 2.2.2.2:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:5060. Content-Type: application/sdp. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKc4b2.5492f2f6.0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 157. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 9.9.9.9. t=0 0. m=audio 6376 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv.
# U 2004/10/07 10:42:37.840989 2.2.2.2:5060 -> 1.1.1.1:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:29436. Content-Type: application/sdp. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 178. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 2.2.2.2. t=0 0. m=audio 35020 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv. a=nortpproxy:yes.
# U 2004/10/07 10:42:37.933918 1.1.1.1:5060 -> 2.2.2.2:5060 ACK sip:2.2.2.2:5060;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on SIP/2.0. Via: SIP/2.0/UDP 192.168.0.10:5060;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Route: sip:16667777777@8.8.8.8:29436. Content-Length: 0. .
# U 2004/10/07 10:42:37.934311 2.2.2.2:5060 -> 8.8.8.8:29436 ACK sip:16667777777@8.8.8.8:29436 SIP/2.0. Max-Forwards: 10. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Via: SIP/2.0/UDP 2.2.2.2;branch=0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Content-Length: 0. .
################# U 2004/10/07 10:42:39.850082 8.8.8.8:29438 -> 2.2.2.2:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:5060. Content-Type: application/sdp. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKc4b2.5492f2f6.0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 157. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 9.9.9.9. t=0 0. m=audio 6376 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv.
# U 2004/10/07 10:42:39.850789 2.2.2.2:5060 -> 1.1.1.1:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:29438. Content-Type: application/sdp. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 178. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 2.2.2.2. t=0 0. m=audio 35020 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv. a=nortpproxy:yes.
# U 2004/10/07 10:42:39.938775 1.1.1.1:5060 -> 2.2.2.2:5060 ACK sip:2.2.2.2:5060;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on SIP/2.0. Via: SIP/2.0/UDP 192.168.0.10:5060;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Route: sip:16667777777@8.8.8.8:29436. Content-Length: 0. .
# U 2004/10/07 10:42:39.939154 2.2.2.2:5060 -> 8.8.8.8:29436 ACK sip:16667777777@8.8.8.8:29436 SIP/2.0. Max-Forwards: 10. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Via: SIP/2.0/UDP 2.2.2.2;branch=0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Content-Length: 0. .
##### U 2004/10/07 10:42:41.787396 2.2.2.2:5060 -> 1.1.1.1:5060 .... ##### U 2004/10/07 10:42:43.850035 8.8.8.8:29440 -> 2.2.2.2:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:5060. Content-Type: application/sdp. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKc4b2.5492f2f6.0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 157. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 9.9.9.9. t=0 0. m=audio 6376 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv.
# U 2004/10/07 10:42:43.850934 2.2.2.2:5060 -> 1.1.1.1:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:29440. Content-Type: application/sdp. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 178. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 2.2.2.2. t=0 0. m=audio 35020 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv. a=nortpproxy:yes.
# U 2004/10/07 10:42:43.948604 1.1.1.1:5060 -> 2.2.2.2:5060 ACK sip:2.2.2.2:5060;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on SIP/2.0. Via: SIP/2.0/UDP 192.168.0.10:5060;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Route: sip:16667777777@8.8.8.8:29436. Content-Length: 0. .
# U 2004/10/07 10:42:43.949012 2.2.2.2:5060 -> 8.8.8.8:29436 ACK sip:16667777777@8.8.8.8:29436 SIP/2.0. Max-Forwards: 10. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Via: SIP/2.0/UDP 2.2.2.2;branch=0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Content-Length: 0. .
######### U 2004/10/07 10:42:47.859666 8.8.8.8:29442 -> 2.2.2.2:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:5060. Content-Type: application/sdp. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKc4b2.5492f2f6.0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 157. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 9.9.9.9. t=0 0. m=audio 6376 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv.
# U 2004/10/07 10:42:47.860529 2.2.2.2:5060 -> 1.1.1.1:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:29442. Content-Type: application/sdp. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 178. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 2.2.2.2. t=0 0. m=audio 35020 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv. a=nortpproxy:yes.
# U 2004/10/07 10:42:47.953324 1.1.1.1:5060 -> 2.2.2.2:5060 ACK sip:2.2.2.2:5060;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on SIP/2.0. Via: SIP/2.0/UDP 192.168.0.10:5060;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Route: sip:16667777777@8.8.8.8:29436. Content-Length: 0. .
# U 2004/10/07 10:42:47.953722 2.2.2.2:5060 -> 8.8.8.8:29436 ACK sip:16667777777@8.8.8.8:29436 SIP/2.0. Max-Forwards: 10. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Via: SIP/2.0/UDP 2.2.2.2;branch=0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Content-Length: 0. .
# U 2004/10/07 10:42:51.869469 8.8.8.8:29444 -> 2.2.2.2:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:5060. Content-Type: application/sdp. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKc4b2.5492f2f6.0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 157. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 9.9.9.9. t=0 0. m=audio 6376 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv.
# U 2004/10/07 10:42:51.870300 2.2.2.2:5060 -> 1.1.1.1:5060 SIP/2.0 200 OK. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 101 INVITE. Contact: sip:16667777777@8.8.8.8:29444. Content-Type: application/sdp. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK4057b0b1. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Content-Length: 178. . v=0. o=esv1.dfwi.masergy.net 1234 16934 IN IP4 9.9.9.9. s=sip call. c=IN IP4 2.2.2.2. t=0 0. m=audio 35020 RTP/AVP 0. a=rtpmap:0 PCMU/8000. a=sendrecv. a=nortpproxy:yes.
# U 2004/10/07 10:42:51.887443 2.2.2.2:5060 -> 1.1.1.1:5060 .... # U 2004/10/07 10:42:51.964233 1.1.1.1:5060 -> 2.2.2.2:5060 ACK sip:2.2.2.2:5060;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on SIP/2.0. Via: SIP/2.0/UDP 192.168.0.10:5060;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Route: sip:16667777777@8.8.8.8:29436. Content-Length: 0. .
# U 2004/10/07 10:42:51.964630 2.2.2.2:5060 -> 8.8.8.8:29436 ACK sip:16667777777@8.8.8.8:29436 SIP/2.0. Max-Forwards: 10. Record-Route: sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on. Via: SIP/2.0/UDP 2.2.2.2;branch=0. Via: SIP/2.0/UDP 192.168.0.10:5060;rport=5060;received=1.1.1.1;branch=z9hG4bK3d28987e. From: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. To: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:46:25 GMT. CSeq: 101 ACK. User-Agent: CSCO/6. Content-Length: 0. .
# U 2004/10/07 10:43:01.987391 2.2.2.2:5060 -> 1.1.1.1:5060 .... ##################### U 2004/10/07 10:43:11.832964 8.8.8.8:29451 -> 2.2.2.2:5060 BYE sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on SIP/2.0. Max-Forwards: 68. Route: sip:4445555555@1.1.1.1:5060. To: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. From: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 2 BYE. Via: SIP/2.0/UDP 8.8.8.8:5060. Contact: sip:16667777777@8.8.8.8:5060. Content-Length: 0. .
# U 2004/10/07 10:43:11.833608 2.2.2.2:5060 -> 1.1.1.1:5060 BYE sip:4445555555@1.1.1.1:5060 SIP/2.0. Record-Route: sip:2.2.2.2;ftag=3306152785-310961;lr=on. Max-Forwards: 16. To: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. From: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 2 BYE. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKdac.d168c652.0. Via: SIP/2.0/UDP 8.8.8.8:5060;rport=29451. Contact: sip:16667777777@8.8.8.8:29451. Content-Length: 0. .
# U 2004/10/07 10:43:11.957265 1.1.1.1:5060 -> 2.2.2.2:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bKdac.d168c652.0,SIP/2.0/UDP 8.8.8.8:5060;rport=29451. From: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. To: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:47:00 GMT. CSeq: 2 BYE. Server: CSCO/6. Content-Length: 0. RTP-RxStat: Dur=40,Pkt=1986,Oct=317760,LatePkt=0,LostPkt=0,AvgJit=0. RTP-TxStat: Dur=40,Pkt=1992,Oct=318720. .
# U 2004/10/07 10:43:11.957523 2.2.2.2:5060 -> 8.8.8.8:29451 SIP/2.0 200 OK. Via: SIP/2.0/UDP 8.8.8.8:5060;rport=29451. From: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. To: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:47:00 GMT. CSeq: 2 BYE. Server: CSCO/6. Content-Length: 0. RTP-RxStat: Dur=40,Pkt=1986,Oct=317760,LatePkt=0,LostPkt=0,AvgJit=0. RTP-TxStat: Dur=40,Pkt=1992,Oct=318720. .
# U 2004/10/07 10:43:12.087422 2.2.2.2:5060 -> 1.1.1.1:5060 .... # U 2004/10/07 10:43:12.336993 8.8.8.8:29451 -> 2.2.2.2:5060 BYE sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on SIP/2.0. Max-Forwards: 68. Route: sip:4445555555@1.1.1.1:5060. To: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. From: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 2 BYE. Via: SIP/2.0/UDP 8.8.8.8:5060. Contact: sip:16667777777@8.8.8.8:5060. Content-Length: 0. .
# U 2004/10/07 10:43:12.337450 2.2.2.2:5060 -> 8.8.8.8:29451 SIP/2.0 200 OK. Via: SIP/2.0/UDP 8.8.8.8:5060;rport=29451. From: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. To: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:47:00 GMT. CSeq: 2 BYE. Server: CSCO/6. Content-Length: 0. RTP-RxStat: Dur=40,Pkt=1986,Oct=317760,LatePkt=0,LostPkt=0,AvgJit=0. RTP-TxStat: Dur=40,Pkt=1992,Oct=318720. .
# U 2004/10/07 10:43:13.341806 8.8.8.8:29452 -> 2.2.2.2:5060 BYE sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on SIP/2.0. Max-Forwards: 68. Route: sip:4445555555@1.1.1.1:5060. To: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. From: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 2 BYE. Via: SIP/2.0/UDP 8.8.8.8:5060. Contact: sip:16667777777@8.8.8.8:5060. Content-Length: 0. .
# U 2004/10/07 10:43:13.342319 2.2.2.2:5060 -> 8.8.8.8:29451 SIP/2.0 200 OK. Via: SIP/2.0/UDP 8.8.8.8:5060;rport=29451. From: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. To: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:47:00 GMT. CSeq: 2 BYE. Server: CSCO/6. Content-Length: 0. RTP-RxStat: Dur=40,Pkt=1986,Oct=317760,LatePkt=0,LostPkt=0,AvgJit=0. RTP-TxStat: Dur=40,Pkt=1992,Oct=318720. .
##### U 2004/10/07 10:43:15.351780 8.8.8.8:29453 -> 2.2.2.2:5060 BYE sip:2.2.2.2;ftag=000f902b48ef00092bde0f52-44bd25ec;lr=on SIP/2.0. Max-Forwards: 68. Route: sip:4445555555@1.1.1.1:5060. To: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. From: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. CSeq: 2 BYE. Via: SIP/2.0/UDP 8.8.8.8:5060. Contact: sip:16667777777@8.8.8.8:5060. Content-Length: 0. .
# U 2004/10/07 10:43:15.352338 2.2.2.2:5060 -> 8.8.8.8:29451 SIP/2.0 200 OK. Via: SIP/2.0/UDP 8.8.8.8:5060;rport=29451. From: sip:6667777777@2.2.2.2;user=phone;tag=3306152785-310961. To: "User" sip:4445555555@2.2.2.2;tag=000f902b48ef00092bde0f52-44bd25ec. Call-ID: 000f902b-48ef000b-389b653d-796379fe@192.168.0.10. Date: Thu, 07 Oct 2004 15:47:00 GMT. CSeq: 2 BYE. Server: CSCO/6. Content-Length: 0. RTP-RxStat: Dur=40,Pkt=1986,Oct=317760,LatePkt=0,LostPkt=0,AvgJit=0. RTP-TxStat: Dur=40,Pkt=1992,Oct=318720. .
########exit 138 received, 0 dropped
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