VoIP is popular because it works like your phone. However, VoIP is based on the Internet to transmit and receive audio data in the process of converting the voice of the digital audio data. That means it will receive and transmit digital audio data with greater clarity at a rate much faster.

Who uses the Internet to transmit and receive digital data, VoIP calls to land much cheaper than phone calls. With the phone, a five-minute call can cost a lot of money. Internet calls from the same period, costs a fraction of fixed costs. Some VoIP providers even offer free telephone number for long distance and overseas call.

In addition to free calls, VoIP providers usually draw the phone functions, such as three-way call, caller ID, audio, video, call waiting and call the package. Telephone companies also offer these services, but with an extra charge.