A CANCEL request sent from my Asterisk UA (10.1.21.44) to FS (b-lab-1) while the call is still ringing does not work.
Why is this request resulting in a 481? I appreciate the help - I'm still just starting to learn SIP & FS. The CANCEL request and 481 response appear as follows on my FS console: recv 362 bytes from udp/[10.1.21.44]:5060 at 13:30:23.291616: ------------------------------------------------------------------------ CANCEL sip:70...@b-pbx-lab-1.mynet.net<sip%3a70...@b-pbx-lab-1.mynet.net>SIP/2.0 Via: SIP/2.0/UDP 10.1.21.44:5060;branch=z9hG4bK6f7f35ab;rport From: "Steve" <sip:70...@10.1.21.44 <sip%3a70...@10.1.21.44> >;tag=as7f6965ea To: <sip:70...@b-lab-1.mynet.net <sip%3a70...@b-lab-1.mynet.net>> Call-ID: 237598fd102b739a03b4a4047bf69...@10.1.21.44 CSeq: 103 CANCEL User-Agent: Asterisk PBX Max-Forwards: 70 Content-Length: 0 ------------------------------------------------------------------------ send 327 bytes to udp/[10.1.21.44]:5060 at 13:30:23.292235: ------------------------------------------------------------------------ SIP/2.0 481 Call/Transaction Does Not Exist Via: SIP/2.0/UDP 10.1.21.44:5060;branch=z9hG4bK6f7f35ab;rport=5060 From: "Steve" <sip:70...@10.1.21.44 <sip%3a70...@10.1.21.44> >;tag=as7f6965ea To: <sip:70...@b-lab-1.mynet.net <sip%3a70...@b-lab-1.mynet.net> >;tag=71m745HKHKyjc Call-ID: 237598fd102b739a03b4a4047bf69...@10.1.21.44 CSeq: 103 CANCEL Content-Length: 0 -------------------------------------- Thanks. - SW
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