All,
consider the following scenario:
Client A and Client B are in a stable call (SDP is offered in the
INVITE and
is
ANSWERed in the 200OK)
Client A holds Client B by sending a re-INVITE (IP address set to
0.0.0.0)
(I realize this method of holding a session
is no longer recommended)
Now, when Client A reverts back to B, what should client B's
behaviour be when
(a) Client A sends a re-INVITE with SDP - offer SDP (new or same as
earlier) and expect an
answer in the 200OK)
(b) Client A sends an re-INVITE - with NO SDP - i.e wait for the
offer in 200OK and send an
answer in the ACK.
I realize, in general, this is how OFFER/ANSWER model works!! Not
counting the Outstanding
Offers case, are there any restrictions or limitations to this model.
Specifically, can I do either (a) or (b), when applied to situation
described above viz., when a
session is held and is being retrieved.
Appreciate your commments
Murali
--- Begin Message ---
Hello all,
Firstly thanks to Bert for getting back on my earlier queries.
I have some more doubts regarding the use of B2BUA as a service
execution controller.
>Since a B2BUA cannot *route* the signaling messages (since it is a UA
and not a proxy), does it have to be configured with some outbound
proxy?
>Can a B2BUA record-route? If not, how does it remain in the signaling
path between the end points for the entire duration of the call?
>If the service logic is going to be built on top of a B2BUA, does the
end-point have to be configured with this B2BUA?
Thanks,
Tanmay Z.
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