[Freeswitch-users] RFC4904 Trunkgroup Identity

I am new to freeswitch as far as testing it, but have been on the user-list for a long time. I have searched through my archive of emails as well as searched on google for any answer that I can find on this. I am looking for the configuration options for RFC4904, trunk-group identity. This is where you can set Freeswitch up to send unscreened calls through your trunkgroup using the tgrp and trunk-context that is in the registration for every outbound call. Any help would be appreciated.