Dial tone

Hello,

how could I set up Freepbx to have a continuous tone when I pick up the phone and then having a dialtone only when dialing a 0 to place an outside call?

This is the default Asterisk behaviour, I recall, but since I installed Freepbx I get the Italian dial tone as soon as I pick up the phone, without any need to dial 0.

Thanks
Rgds
Stefano