It took Vonage three years and ton of cash to get to the million customer mark. Time Warner Cable hit the milestone in half that much time, and is now the second (US) company with a million VoIP subscribers.
Digital Phone was officially launched in May 2003 to customers in Portland, ME. By the end of 2004, the Company had successfully rolled out Digital Phone to all of its divisions, across 27 states. Having achieved its unprecedented goal of fully deploying phone service within 18 months, Time Warner Cable has turned its focus to rapidly signing up new phone customers.
Pretty sure not many of them know that their digital phone connections are actually VoIP. If Comcast follows the same adoption curve, Vonage and Bells, better watch out!