said by DSLR98004:
My understanding is that the backup server will only be operational if you also make the same server change on the VOIP.ms web site. In other words, I don't believe you can fully automate the server switch using only the Aastra side
Precisely. And that's the reason why failover should be done on their side and not on clients side...--
Keep it simple, it'll become complex by itself...