Failover-Backup options for S4B CCE on Prem


We are looking into what options we have for a failover process more in the lines of if my ISP goes down.  While digging through my INI file, on my CCE on prem S4B server, my DMZ IPv4 address might be holding me back with making this an easy proces.


We currently have one AudioCodes appliance running my CCE on prem servers connecting to physical PRI's from a local vendor in my area.  We have two different ISP Circuits in my building provided by two different vendors.  Is there a good way to cut back and forth between the two circuits if my primary circuit should go down?

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I've asked a couple engineers at MS and it appears like they do not have a supported solution to achieve this. I guess back to the chalkboard with this one.