[SPAM] Re: [Serusers] SER RADIUS Accounting and B2BUA

[Samuel Osorio Calvo]

Does SER support Session Timers??????????

Samuel.



Unclassified.
>>> Jiri Kuthan <jiri at iptel.org> 03/07/05 01:40PM >>>
At 11:06 PM 3/6/2005, Alistair Cunningham wrote:
>Matt,
>
>Because SER handles SIP messages, not RTP streams, it cannot 100%
accurately record CDRs. For instance, if the BYE message is lost because
a client crashed, SER has no way of knowing when the call ended or how
much it cost.

It can be fairly accurate. You just need to provision the network
carefuly and use advanced
features such as session timer.

> A BTBUA gets round this problem by having the RTP packets come to it,
so if a client crashes, the RTP stream stops and the BTBUA knows the
call has finished. The disadvantage of a BTBUA is that it adds latency
and doesn't scale well, because it needs to handle all the RTP traffic.

Indeed. That's the pain. That's why B2BUA with media relay is  to be
used as rarely as possible.

-jiri 

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