Hi Sam,

I think to send a "487 Request Terminated" is a SHOULD and not a MUST.

Greeting

Markus

sam n <[EMAIL PROTECTED]> schrieb am 31.08.04 03:42:20:
> 
> Hello,
> 
> I need to cancel an INVITE that was just sent, and am trying the
> method indicated in RFC 3261. Below is a small log of the SIP messages
> sent/received.
> 
> 
> <send INVITE>
> 
> INVITE sip:[EMAIL PROTECTED] SIP/2.0
> Call-ID: [EMAIL PROTECTED]
> CSeq: 590812 INVITE
> From: <sip:[EMAIL PROTECTED]>;tag=1508783231-1592972684
> To: "1001" <sip:[EMAIL PROTECTED]>
> Via: SIP/2.0/UDP 192.168.0.16:1099
> Max-Forwards: 70
> Contact: "gernot" <sip:[EMAIL PROTECTED]:1099>
> User-Agent: C12 Phone
> Allow: ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,UPDATE,NOTIFY
> Content-Type: application/sdp
> Content-Length: 159
> 
> // sdp body
> 
> <receive TRYING>
> 
> SIP/2.0 100 Trying
> Via: SIP/2.0/UDP
> 192.168.0.16:1099;branch=z9hG4bK2a812a1942f6c5e7081b1c7505d45b8c
> From: <sip:[EMAIL PROTECTED]>;tag=1508783231-1592972684
> To: "1001" <sip:[EMAIL PROTECTED]>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 590812 INVITE
> Content-Length: 0
> 
> 
> <receive RINGING>
> 
> SIP/2.0 180 Ringing
> Via: SIP/2.0/UDP
> 192.168.0.16:1099;branch=z9hG4bK2a812a1942f6c5e7081b1c7505d45b8c
> From: <sip:[EMAIL PROTECTED]>;tag=1508783231-1592972684
> To: "1001" <sip:[EMAIL PROTECTED]>;tag=1229238695-1093914397502
> Call-ID: [EMAIL PROTECTED]
> CSeq: 590812 INVITE
> Allow: ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,UPDATE,NOTIFY
> Supported: 100rel
> Contact: <sip:192.168.0.170:5060>
> Remote-Party-ID: "Jill
> Tester"<sip:[EMAIL 
> PROTECTED];user=phone>;screen=yes;party=called;privacy=off;id-type=subscriber
> Content-Length: 0
> 
> 
> <send CANCEL>
> 
> CANCEL sip:[EMAIL PROTECTED] SIP/2.0
> Call-ID: [EMAIL PROTECTED]
> CSeq: 590812 CANCEL
> From: <sip:[EMAIL PROTECTED]>;tag=1508783231-1592972684
> To: "1001" <sip:[EMAIL PROTECTED]>
> Via: SIP/2.0/UDP 192.168.0.16:1099
> Max-Forwards: 70
> User-Agent: C12 Phone
> Contact: "gernot" <sip:[EMAIL PROTECTED]:1099>
> Content-Length: 0
> 
> <receive OK for CANCEL>
> 
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP
> 192.168.0.16:1099;branch=z9hG4bK4f4ef2cc44a8b287fda3dd08df6fdebd
> From: <sip:[EMAIL PROTECTED]>;tag=1508783231-1592972684
> To: "1001" <sip:[EMAIL PROTECTED]>
> Call-ID: [EMAIL PROTECTED]
> CSeq: 590812 CANCEL
> Content-Length: 0
> 
> However, after this, i do not receive a 487 Request Terminated
> response, and the remote user's phone proceeds to ring.
> 
> Could anyone kindly tell me where i'm going wrong.
> 
> Thanks in advance.
> 
> Regards,
> Sam
> _______________________________________________
> Sip-implementors mailing list
> [EMAIL PROTECTED]
> http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors


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