000 00329nam a22001337a 4500
003 OSt
005 20240525121531.0
008 240525b |||||||| |||| 00| 0 eng d
100 _aViswanathan,Thiagara
245 _aTelecommunication Switching Systems and Networks
260 _aNew Delhi
_bPHI
300 _a583
942 _2ddc
_cTCB
999 _c7032
_d7032