Hi All,

I have a question concerning FS failover for high availability. My SIP provider offers the ability to route to a second server if the primary is down.  That is simple enough, but what about the phones?  The desktop devices are not registered with the back FS server.

The only idea I have so far would be to change the DNS addresses to the backup upon failure, but that can take a long time to propagate to the phones. 

How do other people handle this issue?

Thanks,

Sean