That's correct, you can use the setting "Send call to the destination in the Request -URI"
Check also DID management, where you can assign the DID number to the extension.
https://doc.vodia.com/docs/did-management
if the call does not connect then we need a log file.
https://doc.vodia.com/docs/admin-logging, we need Log call messages activated in the logging.
Who's the SIP trunk provider?