[Serusers] Call limiting ?

[Klaus Darilion]

Jiri Kuthan wrote:
> You can write a ser script to implement session timer, we have indeed done that.

Does that really work? Do you send reINVITEs from the SIP proxy? 
Wouldn't then you have to change the CSeq of requests sent by the clients?

regards
klaus

> That still does not give you access to call state. You would have to write 
> own module which keeps it and hope that session timer will provide needed reliability
> (which may not be always the case).
> 
> -jiri
> 
> At 12:26 01/08/2006, Alexandre Snarskii wrote:
> 
>> Hi!
>>
>> As far as I know, SER does not have functionality of limiting
>> number of calls on per-user basis. It was discussed years ago,
>> and the reason for that was "We don't have ability to know is call
>> still alive" 
>> (http://lists.iptel.org/pipermail/serusers/2004-November/013035.html)
>>
>> But, in April 2005, RFC 4028 (Session Timers in SIP) appeared, and
>> it (at least theoretically) can be utilised to achieve knowlege of active 
>> dialogs, and, as result - on number of active calls. 
>>
>> And this RFC looks like supported on Cisco gateways: 
>>
>> U X.X.X.X:59104 -> X.X.X.X:5060
>> INVITE sip:aaaaaaa at X.X.X.X:5060 SIP/2.0.
>> Supported: 100rel,timer,replaces.
>>                  ^^^^^
>> Min-SE:  1800.
>> ^^^^^^^^^^^^^^
>> User-Agent: Cisco-SIPGateway/IOS-12.x.
>>
>> Question: is this RFC/functionality planned to be supported in SER ? 
>> If not - are there any good intro on "How to write SER module by yourself" ? :) 
>>
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> 
> --
> Jiri Kuthan            http://iptel.org/~jiri/ 
> 
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