Can freepbx run on PROXY MODE?

can freepbx run on PROXY MODE ???

you may want be a little more clear what you are asking.

here is the diagram…

ip phone or client orig call (ip address) ---->> call to freepbx (ip address) ----> trunk(provider)

currentlly on my provider side the detail showing on there log or cdr are my freepbx ip address…

i need the ip address of the client wich is the origination of the call will appear on the cdr or log of my provider…