I think it's legal for UAC to BYE the dialog, As per RFC4028
9. UAS Behavior The UAS MUST set the value of the refresher parameter in the Session-Expires header field in the 2xx response. Without refresher parameter, UAC might think it's a bad request. So just end the call. -Rockson -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Govardhana Sankanna Nagendraprasad Sent: Thursday, October 09, 2008 1:49 PM To: [email protected] Subject: [Sip-implementors] UAC's behavior upon receiving 200 OK for INVITEwithout Refresher Hi All, I have a query in Session timer functionality, UAC sends an invite without Session-Expires Header but supports timer, upon receiving a 200 OK response to this with Session-Expires header without refresher parameter, what should be the behavior of UAC. Whether UAC should establish the Call by sending ACK or establish and terminate immediately or UAC should Ignore such responses as refresher parameter is mandatry in the 200 ok response. Regards, Govardhan ________________________________ "DISCLAIMER: This message is proprietary to Aricent and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error,please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. Aricent accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus." _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
