Agilent GSM basic -pdf-93页

Agilent GSM basic RMP9y$~3pU  
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GSM History $,27pkwHeW  
1981Analogue cellular introduced Y; ).+si  
Franco-German study of digital pan-European cellular system O!&,5Dy  
1987MoUsigned by over 18 countries Y)|N"f;  
1989GSM was moved into the ETSI organization XP
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GSM name changed to Global System for Mobile communications. {5j66QFoo  
1990DCS1800 (e .. :50b8  
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