[Freeswitch-users] Bsuy, Wait, Callback - lua script..?

Hi, I'm looking to implement a callback functionality. I get an incoming invite which has the user who is making the call and his destination. I'm supposed to 486 that and then after 2 second call them back, and connect the call. Should I do a hangup hook to a lua script which sleeps 2 seconds and does an originate? or zombie exec? And if I do the originate within the lua script, won't that leave the lua script running for the whole calls? What's the best way.. or even just a good way to do this - I don't expect more than 10 simultaneous calls as of now on this particular method. Thanks, -Avi