By the end of the year, Union Public Schools of Tulsa, Okla., will be one of the first public school systems in the country to use a fully integrated microwave network. The wireless network will enable the district to provide cost-effective voice, video, and data transmissions to and from its 15 school buildings while saving thousands of dollars in leased line charges.

The microwave network uses ultrahigh-frequency (18 and 23 GHz) digital radio signals to transmit information from point to point over short (5- to 10-mile) hops via line of sight. Microwave's 45 Mbps--about 30 times faster than a T1 line--offers...

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