[SIPForum-discussion] Behaviour of B2BUA for BYE

[Gonzalo Gasca]

I have this scenario:

UA1 ---callid xyz --> B2BUA ‹callid abc--> UA2

UA1 starts a succesful call to UA2,
B2BUA is in charge of call routing
In this case UA1 is a cisco phone and UA2 is a Cisco SBC
B2BUA is CUCM

Once UA1 hangs up, it sends a BYE to B2BUA, then B2BUA will disconnect UA2
as well.
My question is:
In which moment should B2BUA should send SIP/2.0 200 OK for this BYE message
to UA1, is this associated to UA2 at some point? or should be independent
transactions? Should B2BUA ack BYE to UA1 as soon as its able to process it?

Thanks


--
Gonzalo Gasca
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