001: 2457
003: Starlibrary PMS 4.5
005: 20180420
020: ^a0-07-001069-2
066: ^asy.D
072: ^adigital telphone systems
082: ^a621
100: ^asyeedr. ali
240: ^aDigital Switching Systems: systems reliability and analysis
245: ^a ^b systems reliability and analysis
260: ^c1998
650: ^a systems analysis