The BYE is sent by the other party and that's why Contact is different in INVITE and BYE. Is the original INVITE is generated by gateway or proxy, because the IP in SDP and VIA IP is same. If the call is ended prematurely on gateway side and possibly the other party is trying to end the call this problem may happen. But unless we have complete call flow it will be unable to predict what went wrong.
Cheers, Anil This email contains material that is confidential. The content of this email is for the sole use of the intended recipient(s). Any review or distribution by persons other than the intended recipient(s) without the express permission of NetScreen Technologies, Inc. is strictly prohibited. If you are not the intended recipient, please contact the sender and delete/destroy all copies of this email and any related attachments. NetScreen does not guarantee the accuracy or completeness of third party materials or information. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Charles Eckel Sent: Wednesday, September 01, 2004 1:10 PM To: jenning zhang Cc: [EMAIL PROTECTED] Subject: Re: [Sip-implementors] BYE message problem The BYE is ok and should be forward by the Proxy based on the Route header to 24.226.0.126:5060. My guess is that the 481 is being sent by 24.226.0.126, not the proxy. The possible reasons for this are numerous, but it hard to identify what the problem is without the complete call flow. Cheers, Charles jenning zhang wrote: > Hi there, > > Could some tell me what is problem with my BYE message, the proxy always > returns "481 Call Leg/Transaction Does Not Exist " > > >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>> > > INVITE sip:[EMAIL PROTECTED]:5060;user=phone;transport=udp SIP/2.0 > Via: SIP/2.0/UDP > sip2.4ztech.com:5060;branch=eb2ba54e-361b5d59-15d5b31d-4fb80d8-1 > Record-Route: > <sip:[EMAIL PROTECTED]:5060;mad dr=sip2.4ztech.com;transport=udp> > > Via: SIP/2.0/UDP 24.226.0.126:5060;received=24.226.0.126 > From: <sip:[EMAIL PROTECTED]>;tag=9F8236D4-1F2E > To: <sip:[EMAIL PROTECTED]> > Date: Mon, 30 Aug 2004 23:16:40 GMT > Call-ID: [EMAIL PROTECTED] > Supported: timer,100rel > Min-SE: 1800 > Cisco-Guid: 2076193368-4195422680-3218703037-761164568 > User-Agent: Cisco-SIPGateway/IOS-12.x > Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, > SUBSCRIBE, NOTIFY, INFO > CSeq: 101 INVITE > Max-Forwards: 5 > Remote-Party-ID: > <sip:[EMAIL PROTECTED]>;party=calling;screen=yes;privacy=off > Timestamp: 1093907800 > Contact: <sip:[EMAIL PROTECTED]:5060> > Expires: 180 > Allow-Events: telephone-event > Content-Type: application/sdp > Content-Length: 247 > > v=0 > o=CiscoSystemsSIP-GW-UserAgent 7721 7097 IN IP4 24.226.0.126 > s=SIP Call > c=IN IP4 24.226.0.126 > t=0 0 > m=audio 18240 RTP/AVP 0 101 > c=IN IP4 24.226.0.126 > a=rtpmap:0 PCMU/8000 > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-16 > a=ptime:20 > . > . > . > . > . > > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< <<<<<<<<<<<<<<<<<<<<<< > > BYE > sip:[EMAIL PROTECTED]:5060;tran sport=udp > > SIP/2.0 > Via: SIP/2.0/UDP 24.226.1.217:5060;branch=z9hG4bK4133B6A7 > From: <sip:[EMAIL PROTECTED]>;tag=9F8236D4-1F2E > To: <sip:[EMAIL PROTECTED]>;tag=A3F462D1-3G5E > Contact: <sip:[EMAIL PROTECTED]> > Route: <sip:[EMAIL PROTECTED]:5060> > Call-ID: [EMAIL PROTECTED] > CSeq: 102 BYE > Content-Length: 0 > > > >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>> > > SIP/2.0 100 Trying > Via: SIP/2.0/UDP > 24.226.1.217:5060;received=24.226.1.217;branch=z9hG4bK4133B6A7 > Call-ID: [EMAIL PROTECTED] > From: <sip:[EMAIL PROTECTED]>;tag=9F8236D4-1F2E > To: <sip:[EMAIL PROTECTED]>;tag=A3F462D1-3G5E > CSeq: 102 BYE > Content-Length: 0 > > >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>> > > SIP/2.0 481 Call Leg/Transaction Does Not Exist > Via: SIP/2.0/UDP > 24.226.1.217:5060;received=24.226.1.217;branch=z9hG4bK4133B6A7 > From: <sip:[EMAIL PROTECTED]>;tag=9F8236D4-1F2E > To: <sip:[EMAIL PROTECTED]>;tag=A3F462D1-3G5E > Call-ID: [EMAIL PROTECTED] > CSeq: 102 BYE > Content-Length: 0 > > > > Thank you very much > > > Jenning Zhang > > > _______________________________________________ > Sip-implementors mailing list > [EMAIL PROTECTED] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
