| 摘要 |
PROBLEM TO BE SOLVED: To provide the communication line changeover device cable of reducing an installation area and reducing man-hours of wiring work. SOLUTION: Since a line switch 1 is directly mounted on a telephone line distribution panel 3, the space for installing the line switch that has conventionally been required separately is saved to reduce the installation area of the changeover device. Furthermore, since individual wiring work of the line switch 1 is not required, man-hours for wiring work are reduced, the construction period is decreased and occurrence of defective wiring is reduced and also the maintenance is simplified.
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