Instead of installing separate lines for a computer and a telephone system, Shelby City Schools of Ohio is saving big bucks using internet protocol (IP) telephony, which uses the district's high-speed computer network to send and receive phone calls.

"I believe an IP phone system puts the power of the phone system into the hands of the district," said Keith Rittenhouse, the district's director of technology services.

IP telephony, which is sometimes called "voice over the internet" or "voice over IP," transmits sound the same way data is transmitted over the internet. Internet protocols send data in small,

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