| 摘要 |
PROBLEM TO BE SOLVED: To improve voice quality by periodically collecting a data communication situation from each voice data relay device, processing collected information, deciding a preservation band to be used for voice stream relay among the voice data relay devices and simultaneously announcing decided preservation band information to each voice data relay device. SOLUTION: A management server device obtains days of week information at present, retrieves information of the applying time band of the applying day of the week in a traffic management table 1209, comparing a data communication band relayed by an access server device with the obtained band and updates a band value in the applying time band of the traffic management table 1209. Furthermore, relay start and end times and the usage band included in relay information and IP address information of relay destination voice data relay device are obtained and stored temporarily. After the execution of a series of processings, the preservation band value in the applying time band of the applying day of the week is calculated and updated, and then a series of processings are repeated until communication management end is indicated.
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