Technology Industry
Industry: Email Alert RSS FeedNew phone system creates digital 'wireless city.' (new wireless digital phone system of Quitaque, Texas) (R & D News)
R & D, May, 1993
Quitaque, Texas, population 500, gained a place in the record books when a new phone system made it the world's first digital "wireless city."
The transformation involved changing from a rural switch-and-wired phone installation to Ultraphone digital wireless technology supplied by InterDigital Communications Corp., key patents for technologies such as Time Division Multiple Access (TDMA) and Broadband-Code Division Multiple Access, which is the proposed standard for cellular phones. The company's customer base includes five of the seven "baby Bells," as well as many foreign telecommunications organizations.
The system installed in Texas is a TDMA/Frequency Division Multiple Access design, says Mark Lenno, engineering vice president at InterDigital. The...
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