00830nam a2200253 a 4500 139 139 12178 BD-DhUAP 20210112093200.0 200116r20081992ii a 001 0 eng d 9788120307131 MUU BD-DhUAP BD-DhUAP Eng 621.382 VIS 23 Viswanathan, Thiagarajan. Telecommunication switching systems and networks / Thiagarajan Viswanathan. New Delhi : Prentice Hall of India, c1992 [Reprinted 2009]. xx, 583 pages : illustrations ; 24 cm. Includes index. Telecommunication Switching systems. Telecommunication systems. Data transmission systems. ddc BK 0 0 ddc 0 0 UAPCL UAPCL General Stacks 2020-01-16 621.382 VIS 3010012178 2020-01-16 1 2020-01-16 BK