Bellamy, John C.2018-10-312018-10-3120002000http://196.43.179.3:8080/xmlui/handle/123456789/8151.Background and Terminology; 2.Why Digital?; 3.Voice Digitization; 4.Digital Transmission and Multiplexing; 5.Digital switching; 6.Digital Modulation and Radio Systems; 7.Network Synchronization Control and Management; 8.Fiber Optic Transmission Systems ; 9.Digital Mobile Telephony; 10.Data and Asynchronous Transfer Mode Networks; 11.Digital Subscriber Access; 12.Traffic Analysisen-USBook