[VOIPSEC] RE: Call Detail Records for VOIP Calls

[Diana Cionoiu]

Hello,

We had the CDR problem recently and we start to look on what CDR should 
actualy be.
Our special problem was that Yate is also a PBX and we must implement CDR 
for stuff like transfers and conferences, and combinations between those.
In fact the problems seems to be that the telephony systems (call it 
gateway, PBX whatever) know about channels, and the billing is made based 
on calls not on channel. 

In the end the best solutions seems to be compatibility with Cisco 
systems, which consider each open channel a call leg (think especialy for 
VoIP calls, where the channel is created for each call). So we actualy 
send out of the system, via a database, or a file or whatever (Yate is 
very flexibile so is never sure what you have outside), as acurate as 
possibile and then we let the billing application to do his job. Normaly 
billing application should be to define by certain rules what a "call" 
means, and based on that information to calculate how much a "call" costs.
Gateway is the most simple case, you have 2 "call legs" which are defining 
a "call", but think that if you have a calling card platform you will 
probably want to bill only the voip call but for the one who generate the 
call.
How can you do all those combinations if you don't give out the call legs?

Diana


> At 03:50 PM 4/12/2005, Mark Teicher wrote:
> >Has anyone dealt with configuration of Call Detail Records for VOIP calls?
> >What is the logging requirements for Sarbanes-Oxley regarding how CDR 
> >records are to be kept and what format??
> 
> How is this any different than CDR from the company PBX?
> 
> >Can call detail records be split into incoming and outgoing calls based on 
> >trunk groups routing voice traffic and then re-assembled for investigative 
> >reasons?
> >What about parsing through call detail records for unusual calling 
> >patterns or duration based calls ??
> >
> >
> >
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> Robert Moskowitz
> Senior Technical Director
> ICSA Labs, a division of Cybertrust, Inc.
> W:      248-968-9809
> F:      248-968-2824
> E:      rgm at icsalabs.com
> 
> There's no limit to what can be accomplished
> if it doesn't matter who gets the credit
> 
> 
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