[Asterisk-Users] Authentication

[Isianto Istiadi]

Dear all,
I have a question regarding the configuration of *. I have 3 port FXS, and 2 
port FXO. I have 4 users that use analog phone connected to FXS (I have 3 
phones). I need to limit the user's capability (user A can call 
International, user B can call long distance, etc). I want to implement the 
password say to call , he/she needs to puch 9(for outgoing call)2-4 digits 
password,then the digits. I need the password to see who is calling, and to 
limit his/her capability.

Is it possible to do it with *, if I can do it can you give me the sample 
conf. I read about authentication applications, but is it the correct one?