[Freeswitch-users] prepaid solutions

[reza a]

Freeswitch users,
Does anyone use freeswitch for prepaid applications? Do you have a walk through on setting up an environment like this? I'd like to play with freeswitch a bit, I know there alot of modules out there but I'm wondering what's the best cohesive set of modules/admin tools to use for a prepaid style applications.
Thanks a lot