PROBLEM TO BE SOLVED: To provide a subscriber information storage, a subscriber information storing method and a subscriber information storage program efficiently storing processing amount and the number of subscribers.SOLUTION: With respect to service processing amount and subscriber information amount which may be a limitation condition of the resources for subscriber information storage, the service processing amount is further sorted into a day shift band and other than day shift band based on the service characteristics. With respect to three resource limitations including a service processing amount (day shift band), a service processing amount (other than day shift band) and a subscriber information amount, the services are sequentially subjected to a series of grouping processing.SELECTED DRAWING: Figure 1
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