Providers provide calling plans:

Broadband doesn't just offer high-speed internet connection. Broadband is used for cable tv and more recently as a phone service called VoIp (Voice over Internet Protocol.) Now broadband phone companies have been created that offer you the ability to make calls using the same technology for internet access. You make the calls right from your computer. The main advantage of this service is when it comes to making long distance calls. It follows closely with the principles of net surfing. After all, you wouldn't pay long distance fees when you're surfing on international sites. However, be prepared, as the government gets more immersed in the internet, new fees could start popping up.