Title :
Fault diagnosis for space-division digital switching network in large-scale SPC telephone switching systems
Author_Institution :
Beijing Univ. of Posts & Telecommun., China
Abstract :
A practical fault diagnosis algorithm for the space-division digital switching network of SPC switching systems is proposed. Its main idea is to sensitize multiple faults to the output of parity checkers in the network using a very short test code sequence. Its advantages over other algorithms are lower diagnosis time, higher fault covering rate and no fault dictionary. The fault types include both stuck-at and bridging faults. Functional faults are also detected
Keywords :
electronic switching systems; fault location; telephone switching equipment; bridging faults; fault covering rate; fault diagnosis algorithm; functional faults; large-scale SPC telephone switching systems; multiple fault sensitization; parity checkers; short test code sequence; space-division digital switching network; stuck-at faults; Counting circuits; Fault detection; Fault diagnosis; Intelligent networks; Large-scale systems; Road transportation; Switching systems; Telecommunication switching; Telephony; Testing;
Conference_Titel :
Circuits and Systems, 1991. Conference Proceedings, China., 1991 International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/CICCAS.1991.184404
