Michael Powel, Chair of FCC, says: "VoIP is greatest communications innovation since the telephone." The "Bells", cable TV, internet, and wireless phones are all converging in VoIP.
The company which has "real VoIP" is Vonage.
the thing to watch for is "session initiated protocol".
AT&T CallVantage always had superior features, including a unified private Web page that lists all incoming and outgoing calls, showing people's actual names, and including any messages they left for instant playback. But it also had the steepest price: $40 a month, which wasn't all that much of an advantage over all-you-can-call plans from regular phone companies.
But AT&T has drastically dropped its price a full 25 percent over the past months, now down to $30 a month and triggered a ripple-down effect. Vonage dropped its own charges from $30 to $25, and Broadvox Direct's price plummeted from $30 to an incredible $20 a month.