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Who developed the first US cellular telephone system called AMPS?(a) Motorola(b) Ericsson(c) AT & T Bell Laboratories(d) ETSIThis question was addressed to me in unit test.My question comes from AMPS and ETACS topic in portion Wireless Systems and Standards of Wireless/Mobile

Answer»

The correct answer is (c) AT & T BELL Laboratories

Best explanation: In the late 1970S, AT & T Bell Laboratories developed the first US cellular telephone system CALLED the Advanced Mobile Phone System (AMPS). In 1983, a total of 40 MHz of spectrum in the 800 MHz band was located by the Federal Communication COMMISSION for AMPS.



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