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Creating local trunk / connect to inside SBC

Posted by neebsTech on Wed, 10/07/2020


Possible that I'm being dumb here but trying to set up a trunk to the inside interface and IP of our SBC from thirdlane on the local network. Thirdlane tries to use it's outside/public address to connect when I make an outbound call. This obviously fails. The local interface of Thirdlane and inside of SBC are on the same network (192.168.20.x/24) and can see each other.

An inbound call ITSP - SBC - Thirdlane routes ok and rings through although we've one way audio. (possible this is part of the same problem)

Is it possible or how can I can get the trunk to use the inside/local interface to route to SBC?

Kind Regards,