WiFi phones getting with the program

The AP is waking up and noticing that making free/cheap Voice over IP phone calls from WiFi hotspots could be the next big thing — or at least that they could be if more than a couple of WiFi phones were actually on the market — and has a decent overview of recent developments, like discount long distance provider IDT's planned Voice over WiFi network, a mobile version of Skype's free VoIP software that works on wireless Pocket PCs, Vocera's WiFi communicator badges, and Dartmouth's free campuswide Voice over WiFi network. Curiously, no mention of Vonage's plans for a WiFi phone or the simple fact that making calls this way is really not much cheaper and considerably less convenient than just carrying a cellphone.