000 00297nam a2200121Ia 4500
008 200701s2008 xx 000 0 eng d
100 _aVISWANATHN
245 0 _aTELECOMUNICATION SWITCHING SYSTEMS AND NETWORKS
250 _a2nd
260 _bPHI NEW DELHI
_c2008
300 _a450
942 _2ddc
_cGE
999 _c3205
_d3205