[Freeswitch-users] Running LUA script asynchronously?

Hi, I would like to add a small functionality to our PBX: when someone calls an emergency number, in parallel to the call, an Email will be sent to our security personel, and a call will be initiated to the security center telling them that extension XXX called an emergency number. I would like this process to run in parallel to the original call. How can I do it? - I prefer calling a LUA script from the dialplan, but it will stall the user's call; can it be run in parallel? - If not, I'll probably use ESL. What is the best event filter string to get informed only about call initiation? Thanks! __Yehavi: