000			00621nam a2200229Ia 4500
001			20852
005			20250221151650.0
008			250214s9999||||xx |||||||||||||| ||und||
020			_a70483906
100			_aAli, Syed Riffat
245		0	_aDigital switching systems: system reliability and analysis
260			_aNew Delhi
260			_bTata McGraw-Hill
260			_c1998
300			_axv, 219p.
500			_aIncludes index
650			_aCommunication systems -- Digital telephones
650			_aDigital telephones
650			_aElectronics and Communication
650			_aSwitching systems
942			_cBK
999			_c36824 _d36824