If you've never heard about VoIP then get ready to reconsider the requirements for long-distance phone calls. VoIP (voice over Internet Protocol) is a service that converts an analog signal, the voice on the phone, into digital data that can be transmitted over the Internet.
Whether can be this service useful? Certainly – yes. VoIP gateway can turn a standard internet connection in an instrument for free telephone communication through the Internet. Using an analog gateway allows you to bypass a phone company, hence, not to pay for international calls, connect easily to the Internet and communicate with family and friends according to the most favorable tariffs.
VoIP is a revolutionary technology that has the potential to transform the world telephone system completely.