Ever since Comcast has been offering their Comcast Digital Voice service, they've been marketing the fact that this service travels over Comcast connections and not the public Internet. As shown above, there's this eMTA (embedded Multimedia Terminal Adapter) that the installer comes to your home and sets up - after which your calls travel over Comcast's private broadband network.
And NOT the (tsk) public Internet, dreaded that be.
Yet in recent days and weeks, they've been making that point much more emphatically.
Just watched a tv spot with the specific line: "Comcast is *not* Internet phone. Underscore not (I would actually have underscored the word "not" but didn't because you might think it was a link).
So we have to ask oourselves why the ramp up on Comcast's part distinguishing their Digital Voice from the (tsk, tsk) "Internet phone" world?
Well, plainly, Comcast is after potential new users who have either heard tales of unreliability about services such as Vonage and Skype- but who trust Comcast enough to try their digital phone service. And of course, "save money" with triple-play. It's not really saving money but Comcast likes you to think it is.
Comcast is also after existing VoIP subscribers who are less than delighted. Maybe Comcast is already their broadband and cable television provider, so why not close the circle and sign up for Comcast Digital Voice as well?