[Freeswitch-users] how do I get more out of destination_number?

I have two E1 PRI lines connected to FS (via Sangoma A102). When I dial the numbers, FS does not pick up the full phone number in the destination_number: for one of the lines, the last 8 digits come through, and for another line (a toll free number) only the first three digits (800). How do I get the full called number? Thanks, Neil