If you’ve never heard of VoIP, get ready to change the way you think about long-distance phone calls. VoIP, or Voice over Internet Protocol, is a method for taking analog audio signals, like the kind you hear when you talk on the phone, and turning them into digital data that can be transmitted over the Internet.
How is this useful? VoIP can turn a standard Internet connection into a way to place free phone calls. The practical upshot of this is that by using some of the free VoIP software that is available to make Internet phone calls, you’re bypassing the phone company (and its charges) entirely.
VoIP is a revolutionary technology that has the potential to completely rework the world’s phone systems. VoIP providers like Energia have already been around for a while and are growing steadily. Major carriers like Telkom,Neotel,MTN,VodaCom etc are already setting up VoIP calling plans in several markets around the world.
Above all else, VoIP is basically a clever “reinvention of the wheel.” The interesting thing about VoIP is that there is not just one way to place a call.