The service allows you having a number which not necessarily conforms to your physical location. The service allows having the number of any USA state and you can make and receive calls. The 911 service will also be available from this number.
IDC projected over 9 billion minutes of voice traffic to travel over worldwide packet networks in 2000, exceeding 135 billion minutes in 2004. Service revenue is projected at 1.6 billion in 2000 and 18.7 billion in 2004.