I stumbled onto this amazing software by accident and it is much more powerful than I would need. I would like to setup a way for people to call each other from pc to pc (but if they could use a regular phone instead of speaking inot a mic that would be a great). I would like a piece of software running like an instant messenger and you just pick a name out of the list and it dials them. My understanding is this works by dialing their IP. Since IP’s change would my instant-messenger-like software need to update a database with everyone’s IP each time each user connected ?
This is a school project. A broad explanation would be mighty appreciated.