Paul Kyzivat wrote: > The problem here is that you have a device that is trying to charge, but > controls nothing to enforce its charging. If it wants to charge, then it > ought to have something (e.g. the media stream) that it can "turn off" > when the call terminates. Then there won't be fraud. > > If the proxy doesn't control the media path, then *what* is it charging > for? If it is providing no services after the call is set up, then it > should only charge for call setup, not call duration. > > I realize many deployed systems do this anyway - its just popular to > charge for things that cost you nothing - its a good way to make money.
The reasoning about media path is not really true. The hypotetical proxy could charge for providing reliable termination service with failover, add-on features and so on. But I agree with one of the previous statements - proxy is simply the wrong entity for doing reliable accounting, one needs to use B2BUA for that. Having control over media is good, but is not required. Usually termination side is secure/reliable enough so that the B2BUA can rely on it to cut off the session on BYE. Regards, -- Maksym Sobolyev Sippy Software, Inc. Internet Telephony (VoIP) Experts T/F: +1-646-651-1110 Web: http://www.sippysoft.com MSN: sa...@sippysoft.com Skype: SippySoft _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
