Trunk failover - backup

Experts,

Is there any way to do failover of trunks, if one VOIP provider trunk fails - another one is used? Do I need any specific FreePbx license for that? I have two voip providers so when one fails I would like to use it another one. Thank you,

Configure your outbound route(s) with the trunks in the order you want to try them
https://wiki.freepbx.org/display/FPG/Outbound+Routes+Module+User+Guide#OutboundRoutesModuleUserGuide-TrunkSequenceforMatchedRoutes.1

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Lorne, I didn’t find this actually has any effect - I’m guessing it should!!
Any way to troubleshoot it? I guess at some point it’s been shown to work?

I’ve not ever been in a situation where I had to test this exhaustively, but failover to trunk #2 will depend on the SIP response code from trunk #1 when the call fails. There’s also a config option to toggle that will force a failover if the trunk returns busy.