| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To attain communication capable of avoiding a fault even when the fault occurs in a radio repeater on a trunk line. <P>SOLUTION: Each of repeaters R1 to Rn repeats the other repeaters R1 to Rn, master repeaters MR1 to MR3 and a mobile terminal MS, constitutes a group area for efficiently repeating respective repeaters, stores and previously recognizes the identification information of a repeater to be directly wirelessly connected to the repeater itself in order to construct two different trunk lines connecting the repeater itself and the other repeater. When a fault occurs in communication between the repeater itself and the directly wirelessly connected repeater in order to construct the 1st trunk line, the repeater concerned informs a center device of the fault information of the fault. The center device receiving the fault information autonomously switches the trunk line to be used and connects the repeater corresponding to the 2nd trunk line to construct the trunk line. <P>COPYRIGHT: (C)2003,JPO</p> |
