摘要 |
PURPOSE:To inform charge corresponding to information transmitted until then when a fault occurs in a packet switching device on one side by holding respective content of charge data estimation counters for up and down lines of the packet switching device equally to that of an opposite counter until end from start of call. CONSTITUTION:When the fault 101 in the packet switching device 11 is detected in performing communication, a remaining packet switching device 12 informs the fact that it performs the processing of a charge data information packet 102 for the device 11 based on the content 3a of the charge data estimation counter 11a for up line of the device 11 received just before from the device 11 to a network managing device 15. Also, when the fault is detected in the device 12, a remaining device 11 receives the content of the charge data estimation counter 12a for down line of the device 12 from the device 12 just before. And it informs the content as a charge data information packet to the network managing device 15 based on the content instead of the device 11. Consequently, the device on the other side informs charge information instead of the device on one side even when the fault occurs in the device on one side and the charge information is extinguished, therefore, the charge is performed corresponding to an information quantity transmitted until then.
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