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The dual mode USDC/AMPS system was standardized as ____________(a) IS-54(b) IS-136(c) PSTN(d) GSMThe question was asked at a job interview.The above asked question is from United States Digital Cellular (IS-54 and IS-136) topic in section Wireless Systems and Standards of Wireless/Mobile

Answer»

Right choice is (a) IS-54

To explain I would say: The dual mode USDC/AMPS SYSTEM was standardized as INTERIM Standard 54 (IS 54). It was standardized by Electron Industries Association and Telecommunication Industry Association (EIA/TIA) in 1990. It was LATER upgraded to IS-136.



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