| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wireless communication system capable of two-way communicating between a key station wireless communication device 20 and one or a plurality of substation wireless communication units 30 through a predetemined communication method, and making a network managing center 10 recognize speedily and specifically a faulty position for a communication disconnection of both the system caused by the fault occurred in the substation wireless communication unit 30. <P>SOLUTION: The substation wireless communication unit 30 composed of a wireless communiction system A has an alarm message transmission controller 37 for switching a transmission destination for transmitting information specifying a detected operating state in response to the faulty position of the substation wireless communication units 30. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
