[Freeswitch-users] Differentiating internal/external calls

Hi, Is it possible for me to have two sets of dialplans - one for incoming (to FS) and other for outgoing (from FS), in the same context? On receiving an incoming call, I want to run through only a subset of xmls, and give up on not hitting, and the same for outbound - is this feasible? Or any channel variable that would help me differentiate between a external call and internal call? Thanks!