[OpenSIPS-Users] some idea

[Josip Djuricic]

well it has to be according to etsi ts standards, but that part I can 
do, the problem is there is around 1400simultaneous calls in our network 
and its growing, cps is rather low for now, but it will grow, now I need 
to intercept only few calls, but I need to then forward it to something 
smart (like b2bua or something similar) to extract needed iri 
information and forward them to voice gw to convert them to isdn.

Is OrecX source available, or perhaps is it already able to do this 
(forward required targeted traffic to mediagw or b2bua instead of 
recording it? )

Best regards,

Josip

Alex Balashov wrote:
> Well, I have no idea if your government has certain standards for 
> interception technology and interfaces as the US does with CALEA.
>
> But if it's simply the broad goal of providing call interception, I 
> suggest using port mirroring and some open-source recording tool like 
> OrecX (there's also a commercial version), which collates SIP and RTP 
> by watching the headers.  It scales fairly well, especially if the use 
> case will not involve attempting to record a very large amount of 
> simultaneous calls.
>
> There are other, more OpenSER-native approaches involving media 
> proxies as well.
>
> -- Alex
>
> josip.djuricic at voljatel.hr wrote:
>
>> Hi there tnx for quick response.
>>
>> The main idea is to provide intercepting functions to the government, 
>> since
>> they press really hard on us, and passive probes are way to expensive we
>> thought about trying to build our own...now that would equire a lot of
>> work, the most hard part would probably be state machine, and connecting
>> sip and rtp together.
>>
>> So if you have any idea on how to acomplish that I and I think many 
>> others
>> faced with same challenge would be very gratefull.
>>
>> Best regards,
>>
>> Josip
>>
>> On Fri, 7 Aug 2009 12:59:52 -0400, Alex Balashov
>> <abalashov at evaristesys.com>
>> wrote:
>>> It's certainly possible.  But you'd do well to tell us what you're  
>>> trying to accomplish to get the best advice.
>
>