Development of unlicensed radio transmitting devices has already led to a wave of new consumer technologies, including Wi-Fi and other innovations like digital cordless phones and in-home video distribution systems that have generated billions of dollars of economic growth.

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But as you go down, take the mobile communications market -- you have digital cellular phones, cordless, pagers, all sorts of PDAs.

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It communicates with a base station over a data communication link based on the DECT (digital enhanced cordless telecommunications) standard, the same technology used by many of today's cordless home and office phones.

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