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B.E. Ossfeldt, ELLEMTEL Development Company
AXE is a stored program controlled (SPC) telephone exchange system. Its control system typically comprises 100 000 IC packages with MTBF = 200 h. The application allows the control system to contribute to the system outage with only a few minutes per year. An ordinary telephone technician is able to maintain the system, mainly during normal working hours.
Index Terms:
self checking, Concurrent diagnosis diagnostic programs, diagnostics performance evaluation, fault-tolerant computing, intermittent fault, maintainability, maintenance software, physical fault insertion
Citation:
B.E. Ossfeldt, I. Jonsson, "Recovery and Diagnostics in the Central Control of the AXE Switching System," IEEE Transactions on Computers, vol. 29, no. 6, pp. 482-491, June 1980, doi:10.1109/TC.1980.1675607
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