On Fri, 26 Oct 2007 18:08:14 +0200, Phil D'Amore <[EMAIL PROTECTED]> wrote:
> Richard: Hi, > In the cases where it doesn't work, can you confirm that the Contact > URI in the 200 actually contains a public address as it leaves your > network? What you're describing makes me think it's not, and it looks > like the following to me: > > GW sends 200 with private address in Contact. This private address > leaks out of your network. This private address happens to fall > within the range of your customer's private network. It doesn't seem to be that. Both the gateway and the proxy have public IPs and no private ones. > The ALG sees this, and notices the RURI contains a private address > from it's own local network. It PATs this address (hence the port > 2021, it just picks the next port, since 2020 was already used by your > PAP2T). The ACK now contains the offending address in the RURI. When > your openser instance gets it, it just relays it like it was told to > do based on loose routing, and the call drops.> > The thing about those ALGs is that they will rewrite *anything* that > matches the access list associated with the nat pool address, even if > it has nothing to do with any real IP traffic flowing through the > thing. Ok. Interesting to know how it does that. In this case it doesn't seem to be that that is triggering the re-write though. I pasted the whole call trace at the end of this email, in case anyone sees anything suspicious. Thanks for thinking this through with me, and for any tips on how I could detect and re-write these errors. Richard. Trace: 1.2.3.201 = Openser proxy 1.2.3.204 = Cisco gateway 81.1.2.218 = User agent IP. U 81.1.2.218:2020 -> 1.2.3.201:5060 INVITE sip:[EMAIL PROTECTED] SIP/2.0. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-21460b8b. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>. Call-ID: [EMAIL PROTECTED] CSeq: 101 INVITE. Max-Forwards: 70. Contact: %5 <sip:[EMAIL PROTECTED]:2020>. Expires: 240. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 252. Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER. Supported: x-sipura. Content-Type: application/sdp. . v=0. o=- 18539 18539 IN IP4 192.168.1.6. s=-. c=IN IP4 81.1.2.218. t=0 0. m=audio 16468 RTP/AVP 4 100 101. a=rtpmap:4 G723/8000. a=rtpmap:100 NSE/8000. a=fmtp:100 192-193. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=sendrecv. U 1.2.3.201:5060 -> 81.1.2.218:2020 SIP/2.0 407 Proxy Authentication Required. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-21460b8b. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=9df88149756df0cbffcc8c4447862715.8d93. Call-ID: [EMAIL PROTECTED] CSeq: 101 INVITE. Proxy-Authenticate: Digest realm="sip.example.com", nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4". Server: OpenSer (1.1.0-notls (i386/linux)). Content-Length: 0. Warning: 392 1.2.3.201:5060 "Noisy feedback tells: pid=15647 req_src_ip=81.1.2.218 req_src_port=2020 in_uri=sip:[EMAIL PROTECTED] out_uri=sip:[EMAIL PROTECTED] via_cnt==1". . U 81.1.2.218:2020 -> 1.2.3.201:5060 ACK sip:[EMAIL PROTECTED] SIP/2.0. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-21460b8b. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=9df88149756df0cbffcc8c4447862715.8d93. Call-ID: [EMAIL PROTECTED] CSeq: 101 ACK. Max-Forwards: 70. Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 81.1.2.218:2020 -> 1.2.3.201:5060 INVITE sip:[EMAIL PROTECTED] SIP/2.0. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>. Call-ID: [EMAIL PROTECTED] CSeq: 102 INVITE. Max-Forwards: 70. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]",algorithm=MD5,response="e038a957ab555bc5a6734800164115b6". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. Expires: 240. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 252. Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER. Supported: x-sipura. Content-Type: application/sdp. . v=0. o=- 18539 18539 IN IP4 192.168.1.6. s=-. c=IN IP4 81.1.2.218. t=0 0. m=audio 16468 RTP/AVP 4 100 101. a=rtpmap:4 G723/8000. a=rtpmap:100 NSE/8000. a=fmtp:100 192-193. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=sendrecv. U 1.2.3.201:5060 -> 81.1.2.218:2020 SIP/2.0 100 trying -- your call is important to us. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>. Call-ID: [EMAIL PROTECTED] CSeq: 102 INVITE. Server: OpenSer (1.1.0-notls (i386/linux)). Content-Length: 0. Warning: 392 1.2.3.201:5060 "Noisy feedback tells: pid=15676 req_src_ip=81.1.2.218 req_src_port=2020 in_uri=sip:[EMAIL PROTECTED] out_uri=sip:[EMAIL PROTECTED] via_cnt==1". . U 1.2.3.201:5060 -> 1.2.3.204:5060 INVITE sip:[EMAIL PROTECTED] SIP/2.0. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.0. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>. Call-ID: [EMAIL PROTECTED] CSeq: 102 INVITE. Max-Forwards: 69. Contact: %5 <sip:[EMAIL PROTECTED]:2020>. Expires: 240. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 252. Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER. Supported: x-sipura. Content-Type: application/sdp. . v=0. o=- 18539 18539 IN IP4 192.168.1.6. s=-. c=IN IP4 1.2.3.201. t=0 0. m=audio 61504 RTP/AVP 4 100 101. a=rtpmap:4 G723/8000. a=rtpmap:100 NSE/8000. a=fmtp:100 192-193. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=sendrecv. U 1.2.3.204:51431 -> 1.2.3.201:5060 SIP/2.0 100 Trying. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.0,SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow-Events: telephone-event. Content-Length: 0. . U 1.2.3.204:51431 -> 1.2.3.201:5060 SIP/2.0 183 Session Progress. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.0,SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Disposition: session;handling=required. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.204. t=0 0. m=audio 17204 RTP/AVP 4 101. c=IN IP4 1.2.3.204. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 1.2.3.201:5060 -> 81.1.2.218:2020 SIP/2.0 183 Session Progress. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Disposition: session;handling=required. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.201. t=0 0. m=audio 61504 RTP/AVP 4 101. c=IN IP4 1.2.3.201. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 1.2.3.204:51431 -> 1.2.3.201:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.0,SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.204. t=0 0. m=audio 17204 RTP/AVP 4 101. c=IN IP4 1.2.3.204. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 1.2.3.201:5060 -> 81.1.2.218:2020 SIP/2.0 200 OK. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.201. t=0 0. m=audio 61504 RTP/AVP 4 101. c=IN IP4 1.2.3.201. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 81.1.2.218:2020 -> 1.2.3.201:5060 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 70. Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.201:5060 -> 81.1.2.218:2021 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.2. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 69. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.204:51431 -> 1.2.3.201:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.0,SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.204. t=0 0. m=audio 17204 RTP/AVP 4 101. c=IN IP4 1.2.3.204. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 1.2.3.201:5060 -> 81.1.2.218:2020 SIP/2.0 200 OK. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.201. t=0 0. m=audio 61504 RTP/AVP 4 101. c=IN IP4 1.2.3.201. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 81.1.2.218:2020 -> 1.2.3.201:5060 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 70. Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.201:5060 -> 81.1.2.218:2021 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.2. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 69. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.204:51431 -> 1.2.3.201:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.0,SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.204. t=0 0. m=audio 17204 RTP/AVP 4 101. c=IN IP4 1.2.3.204. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 1.2.3.201:5060 -> 81.1.2.218:2020 SIP/2.0 200 OK. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.201. t=0 0. m=audio 61504 RTP/AVP 4 101. c=IN IP4 1.2.3.201. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 81.1.2.218:2020 -> 1.2.3.201:5060 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 70. Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.201:5060 -> 81.1.2.218:2021 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.2. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 69. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.204:51431 -> 1.2.3.201:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.0,SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.204. t=0 0. m=audio 17204 RTP/AVP 4 101. c=IN IP4 1.2.3.204. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 1.2.3.201:5060 -> 81.1.2.218:2020 SIP/2.0 200 OK. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.201. t=0 0. m=audio 61504 RTP/AVP 4 101. c=IN IP4 1.2.3.201. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 81.1.2.218:2020 -> 1.2.3.201:5060 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 70. Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.201:5060 -> 81.1.2.218:2021 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.2. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 69. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.204:51431 -> 1.2.3.201:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.0,SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.204. t=0 0. m=audio 17204 RTP/AVP 4 101. c=IN IP4 1.2.3.204. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 1.2.3.201:5060 -> 81.1.2.218:2020 SIP/2.0 200 OK. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.201. t=0 0. m=audio 61504 RTP/AVP 4 101. c=IN IP4 1.2.3.201. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 81.1.2.218:2020 -> 1.2.3.201:5060 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 70. Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.201:5060 -> 81.1.2.218:2021 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.2. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 69. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.204:51431 -> 1.2.3.201:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.0,SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.204. t=0 0. m=audio 17204 RTP/AVP 4 101. c=IN IP4 1.2.3.204. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 1.2.3.201:5060 -> 81.1.2.218:2020 SIP/2.0 200 OK. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.201. t=0 0. m=audio 61504 RTP/AVP 4 101. c=IN IP4 1.2.3.201. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 81.1.2.218:2020 -> 1.2.3.201:5060 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 70. Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.201:5060 -> 81.1.2.218:2021 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.2. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 69. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.204:51431 -> 1.2.3.201:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.0,SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.204. t=0 0. m=audio 17204 RTP/AVP 4 101. c=IN IP4 1.2.3.204. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 1.2.3.201:5060 -> 81.1.2.218:2020 SIP/2.0 200 OK. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-13d1535f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] Server: Cisco-SIPGateway/IOS-12.x. CSeq: 102 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:[EMAIL PROTECTED]:5060>. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Content-Type: application/sdp. Content-Length: 294. . v=0. o=CiscoSystemsSIP-GW-UserAgent 1869 2060 IN IP4 1.2.3.204. s=SIP Call. c=IN IP4 1.2.3.201. t=0 0. m=audio 61504 RTP/AVP 4 101. c=IN IP4 1.2.3.201. a=rtpmap:4 G723/8000. a=fmtp:4 annexa=no. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:30. a=direction:passive. U 81.1.2.218:2020 -> 1.2.3.201:5060 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 70. Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.201:5060 -> 81.1.2.218:2021 ACK sip:[EMAIL PROTECTED]:2021 SIP/2.0. Record-Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKf233.b0309086.2. Via: SIP/2.0/UDP 81.1.2.218:2020;branch=z9hG4bK-a8d9ae6f. From: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. To: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 102 ACK. Max-Forwards: 69. Proxy-Authorization: Digest username="101000000",realm="sip.example.com",nonce="4721d74d797d2fcdae92fc29db4798914ddb90a4",uri="sip:[EMAIL PROTECTED]:2021",algorithm=MD5,response="d0a6ac0edaabb7fca6ef3ff448c7c4e1". Contact: %5 <sip:[EMAIL PROTECTED]:2020>. User-Agent: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.204:51431 -> 1.2.3.201:5060 BYE sip:[EMAIL PROTECTED]:2020 SIP/2.0. Via: SIP/2.0/UDP 1.2.3.204:5060;branch=z9hG4bKD3B675E. From: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. To: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] User-Agent: Cisco-SIPGateway/IOS-12.x. Max-Forwards: 70. Route: <sip:1.2.3.201;lr=on;ftag=32750c901739579ao0>. Timestamp: 1193399881. CSeq: 101 BYE. Content-Length: 0. . U 1.2.3.201:5060 -> 81.1.2.218:2020 BYE sip:[EMAIL PROTECTED]:2020 SIP/2.0. Record-Route: <sip:1.2.3.201;lr=on;ftag=F48836B0-608>. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bK2333.35ada747.0. Via: SIP/2.0/UDP 1.2.3.204:5060;branch=z9hG4bKD3B675E. From: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. To: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. Date: Fri, 26 Oct 2007 11:57:22 GMT. Call-ID: [EMAIL PROTECTED] User-Agent: Cisco-SIPGateway/IOS-12.x. Max-Forwards: 69. Timestamp: 1193399881. CSeq: 101 BYE. Content-Length: 0. . U 81.1.2.218:2020 -> 1.2.3.201:5060 SIP/2.0 200 OK. To: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. From: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 101 BYE. Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bK2333.35ada747.0. Via: SIP/2.0/UDP 1.2.3.204:5060;branch=z9hG4bKD3B675E. Record-Route: <sip:1.2.3.201;lr=on;ftag=F48836B0-608>. Timestamp: 1193399881. Server: Linksys/PAP2T-3.1.15(LS). Content-Length: 0. . U 1.2.3.201:5060 -> 1.2.3.204:5060 SIP/2.0 200 OK. To: %5 <sip:[EMAIL PROTECTED]>;tag=32750c901739579ao0. From: <sip:[EMAIL PROTECTED]>;tag=F48836B0-608. Call-ID: [EMAIL PROTECTED] CSeq: 101 BYE. Via: SIP/2.0/UDP 1.2.3.204:5060;branch=z9hG4bKD3B675E. Record-Route: <sip:1.2.3.201;lr=on;ftag=F48836B0-608>. Timestamp: 1193399881. Server: Linksys/PAP2T-3.1.15(LS). 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