VoIP

From NYTimes: “Sending voice telephone calls over the Internet remains largely a niche service for technophiles and for people seeking cheaper international communications — like users of prepaid phone cards, who may not even realize that their discount calls are bypassing the regular phone network. Yet the technology is showing signs of gradually expanding to a broader audience, a step that could eventually mean wide-reaching changes in the telecommunications industry, if early experiments by individuals and businesses are any indication.”