it would've been better to just start a new thread since this one was long dead, but that's beside the point now.
Yes but by adding a reply that brings this topic to the top of the list so others can read the post and provide input, such as decoder did (thank you sir)... I don't know exactly how I want to go about doing something like this, it all depends on convenience, and of course I'll need to learn more about the intercom system at my school first.
if you want to use the intercom, you have to figure out how. most places I know of, it's connected to the phone system in some fashion and is accessed via an extension number. In simple cases like this, you can just dial to the extension and use the intercom like that. ask around and see what you can dig up, so then you have some info to start from.