Redundant Common Bus Resources and Processor Self-Diagnosis and Recovery Methods for Exchangers

摘要

The present invention performs self-diagnostic tests on memory, data lines, and message input / output hardware in an initial state in a redundant common bus resource and a self-diagnosis and recovery method of a processor of an electronic exchanger in an initial state, An initial state self diagnosis and recovery step of outputting information for automatic restoration; A self-diagnosis test and recovery of the possibility of occupying the redundant bus resources in the loading state after the self-diagnosis and recovery of the initial state, the normal state of the occupied bus, and the transition to the normal loading state, Diagnostic and recovery steps, a fatal error during on-line program execution during on-line state after the self-diagnosis and recovery of the loading status, normal operation of the bus periodically, transmission / reception path of the processor redundancy information, And an online status self-diagnosis and recovery step for performing testing and recovery. Therefore, the maintenance time is saved by allowing easy access to the location where the failure occurs, and it is possible to increase the work efficiency and efficiently manage the redundant resources by excluding the access for the manual return by the operator, In the case of hardware, it is possible to improve the reliability of the software using the software, and it is possible to easily determine the problematic portion in the software and hardware matching.