01214nam a2200253Ia 4500999000900000001000800009003000400017005001700021008004100038020001800079028003700097040002400134082001800158100002100176245002300197250000800220260005600228300000800284504037200292650001600664942001200680952013400692952013400826 c4d40000010OSt20180709111656.0170602s9999 xx 000 0 und d a9788126509294 q2016bAllied Informatics, Jaipur bEnglishaBSDUcBSDU a621.385 bBEL aBellamy, John C. 0a Digital Telephony a3rd bWiley India Pvt. Ltd. Indiaa New Delhic2014,c2000 a643 aBackground and Terminology. Why Digital? Voice Digitization. Digital Transmission and Multiplexing. Digital Switching. Digital Modulation and Radio Systems. Network Synchronization Control and Management. Fiber Optic Transmission Systems. Digital Mobile Telephony. Data and Asynchronous Transfer Mode Networks. Digital Subscriber Access. Traffic Analysis.  aElectronics 2ddccBK 00102ddc4070aBSDUbBSDUd2016-11-19g679.00l2o621.385 BELp000010r2020-02-12 00:00:00s2017-08-31v679.00w2017-06-02yBK 00102ddc4070aBSDUbBSDUd2016-11-19g679.00l2o621.385 BELp000011r2020-02-12 00:00:00s2017-08-31v679.00w2017-06-02yBK