000			00594nam a22002177a 4500
003			Ost
005			20210219150406.0
008			210219b ||||| |||| 00| 0 eng d
020			_a9788120350830
040			_cBT-PhCST
050			_a23928-23929
082			_222 _a621.382 _bVIS
100			_aViswanathan, Thiagarajan.
245			_aTelecommunications switching systems and networks /
250			_a2nd ed.
260			_aDelhi : _bPHI Learning Pvt. Ltd., _c2020.
300			_axvii, 620 p. : _bill. ; _c24 cm.
500			_aIncludes index.
700			_aBhatnagar Manav.
942			_2ddc _cECE
999			_c8008 _d8008