Page Comparison

...

Initially you have one SIP Server that might fail:

Image RemovedImage Added

Now you add a backup SIP Server that should be used in case that SIP-Server failed. We name it SIP-Failover-Server: 

Image RemovedImage Added

Next Step is to edit the main SIP-Server Account Settings and go to "more" and then define the SIP-Failover-Server as  
the "Failover-Account" via the Dropdown. Also specify the Failover-Timeout after which the failed call should be re-
routed to the SIP-Failover-Server.

Image RemovedImage Added

Implementing ISDN Fallback with SIP Failover

...

1.) Add a "fallback" SIP Entry with the IP Address of berofix itself

Image RemovedImage Added

2.) modify the primary SIP Peer and configure the failover_proxy=fallback, also add a failover_prefix=fallback (in "more")

Image RemovedImage Added

3.) create a SIP-ISDN Dialplan Entry with the Settings:
    FromID = .* (or local IP Address of berofix)
    ToID = ISDN-FALLBACK-GROUP
    Destination = fallback(.*)
    NewDestination = \1

Image RemovedImage Added

The Dialplan Entry should have a higher priority then the primary SIP Peer Entries.

...