000 00298nam a2200121Ia 4500
008 241124s9999 xx 000 0 und d
100 _aViswanathan
245 0 _aTelecommunication Switching Systems and Networks
260 _bPrentice Hall of India
260 _c2002
300 _a583
942 _cBK
999 _c2610
_d2610