Freepbx Outbound calls

We have configured our freepbx server to work with a UMTS/GSM router. We configured trunk outbound and inbound routes on our server. We are able to call our local number (+226 XXXXXX) and we can contact our IVR with no problem.
Now we want to be able to call a external number using our freepbx server.
How can we proceed?

Make sure the Trunk has the correct outbound config, setup an outbound route, make sure it has the correct dial patterns.