Hello All,
I have a question about SDP Negotiation.
Caller A ======== INVITE ===========> Callee B
Caller A sends codecs for example 0 and 1 supported by
A to B. B sends its codec in 200 OK for example both 0
and 1.
Now A sends media stream with codec 0 to B.
After some time, if A wants to change the codec to 1
can A do so without RE-INVITE? or if B wants to change
the codec to 1 can B do so without RE-INVITE?
In short both user agent can switch to any codec in
codec list got through sdp negotiation without sending
a new invitation - Is this correct ?,if yes,then how
can a UA inform that it will not be able to support a
codec in a codec list got negotiated , in middle of
session )
Thanks in Advance
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