[VoiceOps] Billing of Forwarded Calls

Alex Balashov abalashov at evaristesys.com
Wed Nov 11 17:33:18 EST 2009

Lee Riemer wrote:

> I agree.  Shouldn't be too hard if you're sniffing the line, say on a 
> wi-fi connection.  Listen for INVITEs, pull dialog info, spoof CANCELs.  
> Nice little DOS attack.

Of course.

But if I had to speculate as to the reason why BYEs, for example, are 
not commonly challenged by ITSP edge equipment, it would be because the 
concept of potentially forbidding someone to hang up their own call - 
however improbable the set of circumstances in that might arise - 
appears perverse, prima facie.

Alex Balashov - Principal
Evariste Systems
Web     : http://www.evaristesys.com/
Tel     : (+1) (678) 954-0670
Direct  : (+1) (678) 954-0671

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