00637nam a2200169Ia 4500008004100000020001800041041000800059082001700067100001700084245010800101250000600209260005100215300001300266650003900279999001900318952013000337210716s2010    xx            000 0 und d  a9788122430882  aeng  a621.382 DASA  aDas, Apurba.  aLine communication system: telecommunication switching approach.bTelecommunication switching approach.  a2  aNew DelhibNew Age International Pvt Ltdc2010  axvii,266  aCommunication Network Architecture  c192118d192118  001040708MCAaAIMITbAIMITeNew Book Houseg195.00l0o621.382 DASApMCA11626r2025-07-21 00:00:00v146.25w2021-07-16yBK