[Users] logging voip calls

[Klaus Darilion]

Christoph Fürstaller wrote:
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> Hi Daniel,
> 
> If I record INVITE and BYE then the SER becomes sessions-stateful (as
> mentioned) in the docs. There is also mentioned, that this is very bad
> for performance.

Just because you use record_route and account the INVITE and BYE 
requests does not make (open)ser call stateful (or dialog-stateful in 
SIP terms). E.g. if the BYE request will never be sent (e.g. both 
clients crashes) openser will not care about it. Thus you do not get a 
BYE CDR in your accounting table.

> Is it better to do the accounting on the RTP Proxy? Is this what the
> docs say? Or did I missunderstod something?

Doing accounting on a node which stays within the media session (e.g. a 
gateway, RTP proxy, B2BUA ...) is much more accurate. Thus, using the 
logs from the RTP proxy is much more accurate and prevents you from 
"dead" session as the RTP proxy will drop down the session after some 
time of inactivity and will terminate the session in the logs (CDR). 
Nevertheless this requires to proxy each call which will lead to more 
traffic on your RTP proxy and usually bigger round-trip-times.

regards
klaus

> 
> chris...
> 
> Daniel-Constantin Mierla wrote:
>> if you use the acc module to account the SIP messages, then you get
>> records for INVITE and BYE which are the start and the end of a call.
>> For more details see the acc module:
>>
>> http://openser.org/docs/modules/1.1.x/acc.html
>>
>> Cheers,
>> Daniel
>>
>>
>> On 05/09/2006 11:52 AM, Giuseppe Parlato wrote:
>>
>>> is it possible to check how long was a VoIP call, directly through ser
>>> or some ser tool?
>>>  
>>> thanks
>>> Giuseppe
>>>  
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