In the digium phones module > network there’s an advanced setting section that includes an alternate sip registration address/port.
According to the tool tip it’s for a secondary sip registration and port which should make the phone register twice with the PBX allowing for phone calls to continue even if the main registration port goes down.
We have two WAN connetions at our location, a primary with a static IP that has a site to site VPN with the PBX and a wireless connection that does not have static IP or a configured VPN.
The primary registration address for the phones (as configured in the digium phones module) is the vpn ip of the pbx. the secondary is it’s external static IP.
This doesn’t seem to work however. Anyone have any experience with making this work? Am I misunderstanding the purpose of this setting or does it simply not work?