> Has anyone successfully had a SIP phone fail over from Asterisk Server A to Server B using DNS SRV?
Definitely we have been doing this for quite a while. > If so, which phone worked for you? I'm assuming you set up your DNS SRV records so that the IP > addresses of A and B are associated with the same name, and both servers have equal priority and equal >weight. We have this working great with both Polycom and Sipura devices. We have servers of different priority (i.e. - primary then failover). The name is the same. > In order to make calls through B after A goes down, do you have to wait as long as the registration > retry interval? Or can you make calls through B as soon as you pick up the phone and dial, because the > INVITE message through A fails, and the phone re-sends the INVITE through B? The way we have it working A is a higher priority than B, so every phone will register to A unless it is down (or the phone is having connectivity issues and points itself to B automatically). In this case when A goes down each phone will automatically failover to B when the next call is placed. There is still an issue of inbound calls, but most carriers will provide a mechanism to fail calls over as well (if the server is truly down). The regisration retry interval (to the best of my knowledge) is how long the phone will wait before attempting to re-register with servers of a higher priority after failing over. We tend to set this as a pretty low number because we want things to get back to the primary as soon as possible (since our carriers will fail back immediately for any new call coming in once the server is back up). -Steve _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users