On Tue, Feb 07, 2017 at 05:08:51PM -0500, Alex Balashov wrote:
Synchronising knowledge of "calls" among Kamailio installations is not an especially challenging technical problem, but nor does it provide the redundancy outcomes you may hope for. Kamailio will happily pass in-dialog requests and their replies statelessly anyway, based on fundamental SIP message properties. It doesn't check whether they correspond to a dialog it knows about.
I should add that RTPEngine can synchronise RTP flow state via Redis, and this is used in production today. So if the goal is fairly seamless RTP failover, that's a solved problem in FOSS land. Freeswitch has a 'recover' facility that does something similar for dialog+media flow state. -- Alex -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 (direct) / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/