00413nam a22001217a 4500100003000000245005100030260003000081300001200111700004100123942001100164999001700175952009900192  aHussain, Ishfaquea86EL66  aTechnical Report on Digital Telephone Exchange  aNawabshah:bQUEST,c1990.  a152p. ;  aDepartment of Electrical Engineering  cTHESIS  c55858d55855  00104070aQUESTCLbRESEARCHd2016-11-22l0pP/21-44r2016-11-22 00:00:00w2016-11-22yTHESIS