I think it needs to the in the sip stack. I think using ip tables might have an unintended consequence of blocking other legitimate traffic that is sip based like mwi, registrations and perhaps resource list stuff.
Putting this in the sip stack also means it needs to be determined whether or not the call mission control plug in monitors every type of call ( internal, external, service/ivr ). Or any vpn connected remote users other difficult to classify connections this might prove to be very difficult indeed. On Jul 24, 2012 9:41 PM, "Mark Dutton" <[email protected]> wrote: > > > I think it would have to be in the sip stack so option 1. > > Thinking about typical deployments. Home phones coming in > via the SBC, site to site links, etc. These all could be > measured via the SBC, but then what about private WAN/VPN? > They will use direct media connections. The proxy is the > only common component that can track the calls. > > Could the sipxproxy maintain the call list and arbitrate? > Even though it is essentially stateless, every call should > have a BYE to end it and if not, a session TIMER could clear > down stale calls. Perhaps it could be mandatory to use the > session timer if admission control is enabled, or a > configurable timer that clears out calls that have gone over > a long period, say 4 hours from the last INVITE/REINVITE. > > Just thinking aloud. > > Sorry if this is the wrong forum for these comments. I am > evaluating open source PBX options. We have been installing > commercial IP PBX products (Zultys, Shoretel) for years. I > set out evaluating the Asterisk distis, but I came back to > sipX after looking at it several times in the past and I was > blown away by how good it is. Just need to do the due > diligence before we commit and I am eagerly following the > 4.6 development. > -- > Regards > > Mark Dutton > > _______________________________________________ > sipx-users mailing list > [email protected] > List Archive: http://list.sipfoundry.org/archive/sipx-users/ > -- LAN/Telephony/Security and Control Systems Helpdesk: Telephone: 434.984.8426 sip: [email protected] Helpdesk Customers: http://myhelp.myitdepartment.net Blog: http://blog.myitdepartment.net
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