Thank You for the additions !
AFAIK, Failover for VOIP.MS can be done manually by the customer by changing the setups in the web portal and customer's ATA, and apparently also manually by DNS 'A' reassignment of individual server locations' traffic by the company if required, such as during the recent Sandystorm which hit NYC, and they have a diesel generator and UPS backup at least in the NYC data centre.
= = = = = = = = =
CallWithUs (link added Nov 3)
CWU is apparently based in Florida, but servers are :
»
Re: WHO is UP-DOWN during Sandy= = = = = = = = =
ANVEO is apparently based in Philadelphia, PA - SIP Servers are in Dallas TX USA, Montreal Canada, and Nuremberg Germany.
Automatic Failover is done by DNS SRV - You choose your Primary SIP Server both in your ATA (server names) as well as in their portal in a tab called 'Geo POP', which is found when you go : Phone Numbers > Manage Phone Numbers > Edit (configurable for each phone number)
Not sure of their power protections, but if the DNS SRV is enabled at your device and it functions as stated, then that is a large part of a working solution.
The most recently revised device setup screenshot on their website is for PAP2T, which shows the DNS SRV settings, and a link back to a DSLR thread for explanation.
Anveo has just added (Oct 30th) a STATUS UPDATE BAR inside of their portal, including a link to a further page for more details.
Thanks Arne, for the extra info immediately below.