WHAT IS IT?
An Internet phone service uses the Internet, instead of old-fashioned phone lines, to send voice. In most cases, you just plug your current telephone into a small box that your Internet phone company provides to you. The box, in turn, plugs into your broadband connection. Just as with regular telephone service, you pick [...]

Internet Voice, also known as Voice over Internet Protocol (VoIP), is a technology that allows you to make telephone calls using a broadband Internet connection instead of a regular (or analog) phone line. Some services using VoIP may only allow you to call other people using the same service, but others may allow you to [...]

For those who have never heard about the potential of VoIP, be prepared to radically change the way you think about your current long-distance calling plan. VoIP (Voice over Internet Protocol) is very simply, a method for taking ordinary analog audio signals and turning them into digital signals that can be sent over the Internet.
So [...]

VoIP (Voice over Internet Protocol) is simply the transmission of voice traffic over IP-based networks.
The Internet Protocol (IP) was originally designed for data networking. The success of IP in becoming a world standard for data networking has led to its adaption to voice networking.
The Economics of VoIP
VoIP has become popular largely because of the cost [...]