Arsen, there is no readily-made solution with rtpproxy unfortunately for that. Some time around 1.0 times circa 2007-2009, somebody submitted a very rough patch to implement master/hot-standby scenario, but the patch was not production-ready back then and the contributor was not available to refine it further, so it ended up stashed somewhere on the branch in git. I'd be happy to say we are working on that, but our resources are limited and priority is to get features like SRTP, trans-coding and video support. As always, pull requests/patches are welcome. With 2.x code is much more modular, so it should be easier to get something like that working.