I'm looking for some guidance on setting up an extension (associated with a physical port) properly and being able to transfer calls in an AGI script. I started out my home brew system with just an fxo port attached to the PSTN. Now, I've added a fxs port and I'd like to hang a phone off of it (TDM411). My current extensions.conf looks like this: exten => s,1,Wait,1 exten => s,2,Answer (and so on) and it works just fine picking up an incoming call and launching into my AGI script. But I'd like to expand the system to be able to transfer calls between the fxo and fxs ports in an AGI script. Basically, a very simply PBX. So, an incoming call on the fxo could be sent to the fxs. And an outbound call when the phone on the fxs port is picked up, would be able to "dial 9" to get out. Thanks in advance, Roy