On 04/01/06, Alistair Cunningham <[EMAIL PROTECTED]> wrote: > Peter Bowyer wrote: > > I was thinking along the same lines, but for a dynamic setup it should > > be possible to have SER/OpenSER load balance REGISTER requests > > according to some strategy/metrics, and then forward INVITEs and other > > call-related traffic to the 'right' back-end server. > > > > Probably lots of reasons why this is too complicated, though.... > > One being that it must be the device that NAT phones register with that > delivers calls to them. Otherwise, the NAT device sees a packet coming > from an unknown IP address and drops it (for common types of NAT such as > restricted cone).
Yes, that's the sort of reason I was thinking of :-) I guess you could NAT the whole cluster behind a single IP with some fancy firewall/router rules.... > Since SER needs to deliver calls, it really needs to > be SER that accepts REGISTERs and holds the registration information. > The Asterisks then send calls from phones to the SER heartbeat address > for delivery. And if a lot of the calls are SIP-SIP, I guess - why bother Asterisk with them at all... > This is what we do in our ITSP in a box product. It gives us full > redundancy and failover with the registration capacity of SER and the > features of Asterisk. Sounds good. > For very large systems, it's possible to have SER redirect (with load > balancing) REGISTERs to a set of SERs so that NAT devices know about the > machines their phones are registered on, but this takes great care to > get right in all cases. Yeah - I knew this was harder than it looked :-) Peter -- Peter Bowyer Email: [EMAIL PROTECTED] Tel: +44 1296 768003 VoIP: sip:[EMAIL PROTECTED] VoIP: [EMAIL PROTECTED] FWD: **275*5048707000 VoipTalk: **473*5048707000 _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users