Hello,

In the SIP sdp offer/answer scenario suppose  A sends INVITE without SDP to B.
B then replies with all the codecs it supports (say 0,8,4,18).
Then is it proper for A to reply in ACK with all codecs (say 0,8,18,4) ?

A-----------INVITE(no sdp)----------> B
A<------------100 trying--------------B
A<------------180ringing-------------B
A<-----------200Ok(0,8,4,18)--------B
A-----------ACK(0,8,18,4)----------->B

Thanks in advance,
Roshan.


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