[SIPForum-discussion] The missed Call with PRACK terminated using BYE or Cancel

[Murali ZTE]

Hello Guys,

I have one query regarding PRACK for the following scenario  my SIP client sending BYE message instead of Cancel.Is it right behavior? because the session is not established for the initial INVITE.or its behaving correctly because of PRACK.Could anyone explain this behaviour ?

UAC-------INVITE-------------->UAS
UAC<-----1xx------------------>UAS
UAC<-----180(Rseq)----------UAS
UAC--------PRACK(Rack)--->UAS
UAC<-----200 OK(PRACK)--UAS
UAC-------- BYE-------------->UAS


Thanks and Regards
Murali

 		 	   		  
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