Comments inline Regards Ajit
-----Original Message----- From: Anshuman Rawat [mailto:[EMAIL PROTECTED] Sent: Friday, December 23, 2005 2:36 PM To: Ajit Kumar; priya pandit; [email protected] Subject: RE: [Sip-implementors] Multiple 2xx responses See inline. Regards, Anshuman 2. Though an ACK is sent back to all, which one should be considered finally ? -> their will be only one ACK response from UAC that will the server transaction to transition itself from completed to confirmed state, rest of all ACK's will be absorbed by UAS having no effect of server transaction state. [ASR] I think the above explanation might be incorrect. Section 13.1 in 3261 states that - "A 2xx response to an INVITE establishes a session, and it also creates a dialog between the UA that issued the INVITE and the UA that generated the 2xx response. Therefore, when multiple 2xx responses are received from different remote UAs (because the INVITE forked), each 2xx establishes a different dialog. All these dialogs are part of the same call." -> [ajit] I am here not talking about forked response I am talking about the retransmission of ACK from a particular UAC to a particular UAS. What you have said is true in case of forked request and the ACK generated by UAC will also be meant for different UAS. This explanation should also answer the original question. 3.Can all of them contain SDPs (pbly answer SDPs)? -> each of the 200Ok response can or need not have the SDP, if one retransmission has SDP answer than all will have. Remember answer can also be sent in 1xx provisional response like 180 ringing. [ASR] I think that it still has to send SDP in 200 OK even if the answer has been sent by a provisional response. Can some 3rd person confirm? [ajit] ya 200ok must carry the SDP even if 180 carries SDP. I was not clear though. Sorry. Regards, Priya. _______________________________________________ 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 ********************** Legal Disclaimer **************************** "This email may contain confidential and privileged material for the sole use of the intended recipient. Any unauthorized review, use or distribution by others is strictly prohibited. If you have received the message in error, please advise the sender by reply email and delete the message. Thank you." ********************************************************************** _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
