[VOIPSEC] RE: Call Detail Records for VOIP Calls

[Will Parton]

 It's been quite a while since I was working on VoIP billing but you might
want to take a look at http://www.ipdr.org/. Two or three years ago IPDR
was having reasonable traction amongst equipment suppliers looking to
reflect VoIP call features in billing streams.

Regards
Will

 
_____________________
Will Parton
Invocom Ltd
will.parton at invocom.com
 



-----Original Message-----
From: Voipsec-bounces at voipsa.org [mailto:Voipsec-bounces at voipsa.org] On
Behalf Of Geoff Devine
Sent: 18 April 2005 02:24
To: Voipsec at voipsa.org
Subject: [VOIPSEC] RE: Call Detail Records for VOIP Calls

North American VoIP billing tends to conform to the GR-1100 format spit out
by any Class 5 office.  Back Office billing systems understand it and there
are a lot of operators who outsource billing to third parties that would
charge extra if billing records were delivered in some other format.

For voice over cable, the CableLabs PacketCable architecture has all core
elements (soft switches, media gateway controllers, media gateways, and
CMTSs) report events to a record keeping server (RKS) using RADIUS and
home-brew objects added to RADIUS messages to both debug the system and
generate billing records.  Somewhere in the magic behind the RKS,
GR-1100-style billing records get kicked out.  In practice, pretty much all
soft switches kick out GR-1100 billing records and there many deployments
don't actually use an RKS.

GR-1100 lets you embed extra data in the call record.  What many vendors do
is log voice quality statistics as collected at the two endpoints of the
call.  It gives operators a handle on packet loss, delay, and jitter
attributes.

I imagine that most VoIP PBX implementations use a more PBX-like CDR format.
There are dozens of permutations but most look something like the old AT&T
Dimension PBX CDR record.  I haven't dealt with PBX billing record formats
in quite a while but it's unlikely that anybody is going to re-invent the
wheel.  Pretty much all CDR systems kick out a record when the call starts,
when the call ends, whenever the user invokes a feature, and periodically
when the call has been up for a long period of time.  In the dark ages, this
went out an RS-232 serial port but interconnect these days is more likely to
use telnet or FTP.

Geoff

----------------------------------------------------------------------
From: Robert Moskowitz <rgm at icsalabs.com>
Subject: Re: [VOIPSEC] RE: Call Detail Records for VOIP Calls
To: Mark Teicher <mht3 at earthlink.net>,voipsec at voipsa.org
Message-ID: <6.2.1.2.2.20050415173120.0385cbd0 at localhost>
Content-Type: text/plain; charset="us-ascii"; format=flowed

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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