To surely execute charging corresponding to transmitted data with simple constitution by periodically transmitting data on a transmission situation which is sampled/measured to a center connected to a communication network and judging charged amounts for the respective users of a sub-network from data.
In traffic measuring devices 15, 19, 24 and 33 in LAN segments 10, 20 and 30, traffic measurement is individually executed by sampling. Traffic data which the traffic measuring devices 15-33 accumulate are periodically transmitted to a traffic measuring device (addition part) 16 connected to a network. A TCP/IP communication network meter rate charging device 17 stores traffic data that the traffic measuring device (addition part) 16 supplies and adds up origination source addresses and incoming destination addresses, which are shown by traffic data. Then, charged amounts for the respective users of a sub-network are judged from data.
MATSUI SACHIKO
SATO EKUO
YAMAMOTO TAKESHI
OZAWA MAKOTO
MIZUNO TAKAMI
MATSUNAGA YASUHIKO
TANAKA KEISUKE
NIPPON TELEGRAPH & TELEPHONE
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