So I've always liked those 'push to talk' phones (like Nextel has). I mean, its really cool to be able to just push a button and talk to someone, walkie-talkie style.
But I've been curious as to how they actually work from a technical perspective? The wikipedia page makes it sound like its a seperate connection protocol of some sort (e.g. not a normal cellular call), but it isn't exactly clear.
Does anybody know?