Purpose: a kind of statistical function design method is arranged to one change request data of management, the regularly input in once-through operation person's terminal and the input by once-through operation person, in the subsystem statistics block by a processor structure of ATM change-over switches, so that it can reduce a communication load, change request data is directly transmitted by a man-machine interface to operator terminal. Construction: a statistics design method includes the following steps: to input change request data by a man-machine interface (200), determine a paths of change request data (201), transmission change request data, it is periodically inputted, to one frequency information within a statistical time management block (202)/time management processor, change request data is transmitted by an operator and is input to multiple operator's request time management processors within statistical time management block (203), in a database (204), it manufactures frequency information/time management update processor and changes request data, notification error counts part, one processor load counts part, an and call statistics part of change request data (205), the transmission statistic result of operator terminal (206).
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