V-phone simplifies Internet calling

It's a top feature of Internet phone service that few bother with: the ability to use it anywhere, making and taking calls from the same number at the same low price, even if you're halfway around the world.
The buzz kill to this dreamy capability is that you usually need either to haul along an adapter to hook up a regular phone to the Internet or install software on any computer you want to call from, a requirement that usually limits you to your own laptop.
Removing that hurdle is the premise behind the V-Phone, Vonage Holdings Corp.'s key-chain device that plugs into any USB port on any Windows-based computer to provide instant Internet calling to and from your number. - Read more