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How to Make Phone Calls Without a Telephone

Internet telephone service is well on its way into the mainstream.

Companies like Vonage, using a technology called voice over Internet protocol, or VoIP, offer cheap long-distance rates and features not found with conventional phone service. Cable giants, too, are taking Internet phones to the masses.
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William L. Brown

Now a subset of VoIP services, called PC-to-phone service, is gaining momentum. With these services, users can make calls to and receive calls from regular phones on their PC’s as long they have a broadband connection, VoIP software downloaded from the Web and a headset.

One advantage of such services is the ability to make calls through an Internet-connected laptop when cellular service is unreliable. Many people also prefer the convenience of talking while working on a PC; the services can operate while you are doing other tasks on the computer. Another advantage is price. PC-to-phone VoIP rates are less expensive than conventional phone calls and in many cases cheaper than phone-to-phone VoIP services, which route calls through broadband modems to regular phones.

By THOMAS J. FITZGERALD

Full Story: http://www.nytimes.com/2005/09/01/technology/circuits/01basics.html?adxnnl=1&adxnnlx=1125593450-HIlp3njm740LGuknPTSbCQ

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