Through a software provided by the internet telephone company you use your internet connection to connect to them and they forward your call to your desired destination.
You can call toll-free numbers to USA for free. To call others, you have to setup and account, if you use your credit card you can have immediate activation and be on your war to great savings.
Call the US for only 3.9 cents from any where in the world, plus great deals on other destinations.
