[OpenSER-Users] [OT?] voip-to-voip rating using cdrtool

Apologies if this is off-topic here, but this seemed like a good friendly place to ask. Apologies for being so naïve also...

Question is, how can I get cdrtool to rate voip-to-voip calls when destination is non-numeric? As in, say, sip:holmes@example.com calls sip:watson@example.com. How do I get cdrtool to match *@example.com or *@example2.com? (FWIW, I'm just trying to see how this works... no plan of rolling out this Evil Scheme into a real world deployment.)

While cdrtool has decent documentation, I wish this was a little more easy on me. Has anyone read/reviewed this book yet?

http://www.packtpub.com/building-telephony-systems-with-openser/book

I'm specifically interested in the "Billing with Freeradius and CDRTool" part.

Thanks, Sajith.