[Users] Routing Examples

I'm having a terrible time trying to get failure routes to work. Can someone point me to some USEFUL examples please? The examples that come with OpenSER are trivial. They all use append_branch("sip:user@domain") which in the real world is barely useful. I need to try sending messages to a specified host with the current user's URI. For example, is this the correct usage for trying to connect in sequence to multple destinations? rewritehostport("192.168.10.7:5060"); append_branch(); t_on_failure("2"); t_relay(); failure_route[2] { rewritehostport("192.168.10.7:5060"); append_branch(); t_relay(); } The second route is never tried. In general, what should I be doing here? Which is correct? rewritehostport(ip-addr) append_branch() t_relay() or maybe... append_branch(ip-addr) t_relay() or maybe... append_branch(ip-addr1) append_branch(ip-addr2) t_relay() Do you get my point? The docs are really bad and don't cover exactly how this stuff is supposed to be implemented! if I do a google search on this stuff, I get almost no matches. There's no books either. I'm out of ideas. I'm just trying to connect to multiple destinations in sequence....