[Asterisk-Users] How do I do this ?

[PHP Mechanic]

I wish to initate calls from a web interface, by clicking on a link and then 
connecting to the automatic outgoing call by picking up an analogue phone.

I've got one fxs and one fxo and I wish to automate the call using a call 
file (which I can do now). How can I pick up a handset and connect to this
call I've made when it's ringing?

Can someone point me as to how I may be able to do this.