The present invention relates to a method for managing collection of errors in an exchange subprocessor, the method comprising: requesting a current time information from a system time manager and receiving time data when the subprocessor restarts, and then driving its own Real Time Clock (RTC); Storing the error occurring in the lower processor together with the time information as history data; Transmitting historical data stored in the step to the main processor at periodic request of the main processor or before restarting the subprocessor; And outputting historical data from the main processor to the operator terminal at the request of the operator. According to the method for managing error collection in a subprocessor according to the present invention, since a subprocessor may refer to an error generated in a subprocessor using history data of an error type stored with time information, the system may be monitored without monitoring the subprocessor. You can track the cause of problems that make them abnormal.
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