000 00396nam a2200133Ia 4500
008 130729s9999 xx 000 0 und d
020 _a9788120307131
082 _a621.385
_bVIS
100 _aViswanathan, T.
245 _aTelecommunication Switching Systems & Networking
260 _aNew Delhi
_b PHI
_c2010
650 _aElectronic Communication Engineering
_bTelecommunication
942 _2ddc
_cBK
999 _c1581
_d1581