John Todd wrote:
Perhaps if all you're talking about is a load balancing system for RTP which doesn't terminate or transcode, then possibly RTP failover is "easier".
Logic would suggest that SIP-only failover is highly desirable, as it is orders of magnitude easier to implement. As I mentioned, this is harder to do with B2BUAs, which need session/dialog/transaction endpoint state. Proxies, on the other hand, do not keep state machines for the former two, and thus are a relatively thin interoperability layer from a state perspective.
And I can see how that could be done - it's fairly complex, but not implausible. So I suppose I'm wrong in saying it's that difficult in reference to the original question, which was (I believe) for a really simple load balancing solution for RTP.
The original question was about a HA SIP load-balancing. No mention of RTP was made. -- Alex Balashov - Principal Evariste Systems Web : http://www.evaristesys.com/ Tel : (+1) (678) 954-0670 Direct : (+1) (678) 954-0671