ETSI GSM 08 06-1999 Digital Cellular Telecommunications System (Phase 2+) Signalling Transport Mechanism Specification for the Base Station System - Mobile-Services Switching Centr_1.pdf

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ITU-R RAPPORT M 766-2 FRENCH-1990 Feasibility of frequency sharing between the GPS and other services《全球定位系统和其他服务之间的频率共享的可行性》.pdf

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