[asterisk-users] AA50 Failover

[Brent Torrenga]

>Set the primary unit to pick up on, say, 2 rings and the secondary unit 
>to pick up on 4.
>If the primary fails, it won't pick up the line and the secondary takes 
>over.
>
>You could try having your phones register to both but I'm not sure how 
>that would work
>
>regards,
>
>Drew

That's exactly how I have things setup.  Phones register to both servers.
The backup server doesn't do much - only answers incoming calls if the ring
goes on for too long.  Keep in mind that you may want to configure the
backup server to not use the lines for placing outbound calls - maybe setup
a SIP trunk for that.  Otherwise, when the primary server comes back up, the
two will be talking over each other trying to use the same lines.

--Brent