Another question which I couldnt find an answer to in the spec.
Can a BYE be sent by a UAC immediately after an INVITE (without getting a
response to the INVITE?). Or is a BYE to be sent only after getting some
sort of reponse to the INVITE (thus enforcing the 3-phase-ness of
an invitation).
Also I think the 3-phase-ness of invitation is compromised when it
is said that a UAC on receiving a 200 OK to an INVITE may ACK or send a
BYE if it no longer wishes to talk to the UAS..
Thus the above looks like:
UAC --INVITE--> UAS
UAC <--200 OK-- UAS
UAC--BYE----> UAS (instead of an ACK)
UAC <--200OK(bye)-- UAS
(I am following RFC 2543)
Thus now it become 4 phase!!!
what is the current bis # ??
Vijay
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