[SIPForum-discussion] P-Early-Media and Offer-Answer Relation

[ankur bansal]

Hi All ,

I have come across one sceanrio :

Invite sdp(O1)---------------------->
183 sdp V1(A1) <----------------------
200 sdp V2 <-----------------------------
ACK ------------------------------------->

Here Sdp coming in 183 and 200 is same but server sending diff versions for
both.
As offer answer is complete after 183 sdp ,how should we handle  200 sdp ?
  1. Assuming 200 sdp as new offer and send answer in ACK ?
  2. Ignore 200 sdp as offer answer already completed ?

Also note 183 is coming with P-Early-Media header .
Does P-Early-Media in 183 response gives us any flexibility regarding Offer
answer model or not ?


Thanks & regards
Ankur Bansal
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20130614/4f81bb0a/attachment-0002.html>