[Asterisk-biz] CDR mediation

[alex at pilosoft.com]

On Mon, 16 May 2005, Chris Ochs wrote:

> I'm curious how CDR mediation is done if you are connecting to someone
> like L3/XO/Qwest via SIP.  Do upstream proxies pass the BYE messages
> back down the proxy chain so you get a full CDR?  Or is there some sort
> of API you query that gives you call records straight from a SBC?
You get the BYE messages. Obviously, how else would you know to signal the 
caller that the call needs to be terminated.

To my knowledge there isn't any API.

> We are adding some (hopefully) useful voip billing functionality to our
> payment gateway, and are trying to get a better understanding of how CDR
> records are typically collected by larger providers.  I've gleaned a
> little information from reading up on SIP and looking at the SER docs,
> but a lot is still fuzzy.