To use VOIP services, you need a broadband Internet connection. You then convert your voice calls to digital Internet packets, which are reassembled on the other end to the person you call. So why do you need to pay a VOIP provider for service? Basically, if all you want to do is call other people who have the same Internet phone service, you don't have to. You can use a downloadable free service like Skype and use your computer as the phone.