000			00389nam a2200157Ia 4500
008			230312s9999||||xx |||||||||||||| ||und||
020			_a0-07-048390-3
082			_a621.387 _bALI-D
100			_aAli;Syed.R
245		0	_aDigital Switching Systems
260			_bMcGraw Hill _aIndia _c1998
300			_a219
546			_aEng.
650			_aComputer _vDigital Switching Systems
942			_cBK
999			_c8305 _d8305