said by nokiatech:VOIP is Voice over IP. The method of transmission and the protocal being transmitted really have nothing to do with one another. They are doing pretty much the same thing that a company like Vonage does. The difference is the vast majority of call routing is done on their private cable network vs using the internet like Vonage does.
You are mostly correct. But unlike Vonage, CDV uses a separate frequency to exit the customers premises and does not use the same frequency as the internet piece. When you get a Comcast cable/voice modem it actually outputs 2 separate channels - one for voice and the other for all regular internet activities.
