00327nam a2200133Ia 4500008004100000020001500041041001200056082001100068100001900079245005100098260002500149300000800174650001100182221030s9999    xx            000 0 und d  a8120307135  aEnglish  a105.23  aT. Viswanathan 0aTelecommunication Switching Systems & Networks  bPHIaNew Delhic2006  a583  aBB ECE