Here at work we have a phone-based paging system, where reception can page you at your desk, and you can talk back without having to pick up the phone. In that way, it's better than disturbing the whole office, and it saves people running around trying to find someone. On the flip side, it's worse and more intrusive than the telephone. At least when the phone rings, you have the option whether to pick up or not. With the paging system, you're just automatically on the phone, because I say so, and you don't get to make the decision.
Mokalus of Borg
PS - Can you imagine living in a world where all phones worked like that?
PPS - I don't want to try.