*Hi ,*
*Can any one tell me what will be the codec can be sent on 200OK in below ?* *Is this the one that support by UE or the Supported codec by Proxy ?* *UA Proxy *>>* -----------------------------------------> *>>* (INVITE SDP: codecs 0 18 101) *>>>>* <------------------------------------------ *>>* (200 OK SDP: codecs 0 101) *>>>>* --------------------------------------------> *>>* ACK (no SDP) *>>>>>>* <------------------------------------------- *>>* (re-INVITE no SDP) *>>>>* ----------------------------------------------> *>> * (200 OK SDP: codecs ?????)* *As per RFC,**RFC 6337 section 5.2.5: *>>* "When the new offer is sent in response to an offerless (re-)INVITE, it *>* should be constructed according to the General Principle for Constructing *>* Offers and Answers (Section 5.1 ): all codecs the UA is currently willing *>* and able to use should be included, not just the ones that were negotiated *>* by previous offer/answer exchanges. The same is true for media types -- *>* so if UA A initially offered audio and video to UA B, and they end up with *>* only audio, and UA B sends an offerless (re-)INVITE to UA A, A's resulting *>* offer should most likely re-attempt video, by reusing the zeroed "m=" line *> * used previously."* *SO I didn't able to understand this "* *all codecs the UA is currently willing > and able to use should be included, not just the ones that were negotiated > by previous offer/answer exchanges."* BR/// Rakesh Kumar Mohanty _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
