[Kamailio-Users] Accounting: How to avoid a fraudulent BYE with lower CSeq?

Iñaki Baz Castillo ibc at aliax.net
Sat Dec 20 18:53:38 CET 2008

El Sábado, 20 de Diciembre de 2008, Juha Heinanen escribió:
> Iñaki Baz Castillo writes:
>  > - The gateway knows exactly *nothing* about it, the call continues (but
>  > from now it's free).
>  >
>  > Annoying?
> it is only if you try to do accounting in the proxy.  if you do
> accounting in the gateway, the call continues, but is not free.
> lots of effort has gone to implement reliable accounting of sip calls in
> the proxy.  i personally don't think that it is a good idea, because it
> greatly complicates proxy implementation and may force proxying of media
> even if it would not otherwise be needed.

What about doing the accounting in a B2BUA (just SIP signalling, no media)?
At least a B2BUA is fully dialog stateful (it really knows about CSeq values 
and so).

Iñaki Baz Castillo

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