00745nam a2200229Ia 4500003000400000005001700004008004100021020001800062020001500080040000800095082002100103100003000124245005200154250000900206260005400215300004100269500001800310501002400328650004500352650003100397856008700428OSt20191213150325.0190311s9999    xx            000 0 und d  a9788120307131  a8120307135  cAEF  222a621.382bVIS1 aViswanathan, Thiagarajan. 0aTelecommunication switching system and networks  a32th  aNew Delhi :bPHI Learning Private limited;c2009.  axx, 583 p. :bill., Diagrams;c21 cm  aInclude index  aAuthor Introduction  aTelecommunication -- Switching systems.   aTelecommunication systems.  uhttps://drive.google.com/file/d/13iYicduYpt9DT9S5elkxM6eA2z45vmJz/view?usp=sharing