That depends what exactly you want to do,
since u have only 1 zone and 1 tech prefix, when GK is doing the call routing will ignore tech prefix, but GW do still send it, so make sure u strip it.
ie CME 1#
CCM-Trunk 1#
if you use only 1 zone, make sure u configure zone prefix properly.
zone prefix gk 2...
zone prefix gk 3...
since you are using only one zone, make sure u specify correctly to which gw u send the call (tip use gw-default priority) command