Playing Default Ringback tone, instead of the country ringbacktone

I noticed on my PBX, that when someone places an international call on my system, they right away get a ringback tone which is a default one for all calls. What I would like is the ability to only hear the correct ringback tone of the destination country, and only hear the ringback tone when the destination phone is actually ringing.

how to setup this option in FreePBX?

Thanks in advance.