| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for collecting the data of vending machines for efficiently collecting the sales data of vending machines, without imposing excessive management load on a center device, in a system in which vending machines are grouped. SOLUTION: In a method for collecting data of grouped vending machines via a public telephone network by a center device, a table (a) in which vending machines are made correspond to telephone numbers for obtaining the data of the vending machines is held in the center device, and the table is sorted by using the telephone numbers as keys (b), and then the telephone numbers are successively called, and the data of each vending machine corresponding to the same telephone number as the called telephone number are collected with one time of calling. Thus, speech cost and speech time required for collecting data can be reduced.
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