Comments in line -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Andreas Byström Sent: Thursday, February 02, 2006 6:32 AM To: [email protected] Subject: [Sip-implementors] Offer/answer retransmission OK?
Hi I have two SDP questions: 1. Is it (according to RFCs) ok to send the SDP answer in a SIP response that is not reliable? I.e, is it ok to send SDP in 180 (that is not using PRACK) Kasturi>>>>Yes it is ok to send SDP (Answer) in 18x messages regardless of whether prack is supported. 2. If sent in 180 (as above) is it then ok to send the exact same response again in 200 OK? Kasturi>>>Yes it needs to be repeated in 200 ok. Is it allowed to respond to a offer in two different mesages (first 180 and then 200). Kasturi>>>Yes, but should be the same. Does it matter if 180 is reliable (say that PRACK is used for 180, still ok to send SDP answer in 200?) Kasturi>>>When PRACK is supported the offer/answer completes on the first Answer (18x). Subsequently if you include it in 200 ok, it can be treated as a new offer. Depends on whether the UAC is ready to receive it and treat it as an offer. If it treats it as an offer it can respond with answer in ACK. Kastur>>>Even when PRack is supported it is not mandatory to return answer in 18x and can always be sent in 200 ok. Regards, // Andreas _______________________________________________ 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
