| 摘要 |
PROBLEM TO BE SOLVED: To constitute a communication circuit on the same floor and obtain an optimum small-scale cell communication system by connecting nodes, each having terminals for reception and transmission and one repeater terminal, in a ring shape by a cable consisting of three communication lines. SOLUTION: Nodes 11, 12, 13... are each provided with two reception terminals and transmission terminals each and one repeater terminal; and the reception terminals of each node are connected to transmission terminals of right and left adjacent nodes, the transmission terminals are connected to the reception terminals, and the repeater terminal is connected by one communication line. Namely, the nodes 11, 12, 13... are connected to the right and left adjacent nodes in a ring shape by one cables 21, 22, 23 having three communication lines to constitute the communication circuit of the cell communication system. Consequently, the system can be wired easily in a short time, and a node can easily be added. Further, the nodes can be standardized, so the cost for manufacture is reducible.
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