| 摘要 |
PURPOSE:To provide a wiring mode in which the number of branch connection points for subscriber wiring can be sufficiently increased and also, the number of core connecting parts on a transmission line up to a subscriber can be remarkably limited to be reduced by providing a short span cable along a long span cable in parallel, and placing plural branch wiring parts connected to the subscriber of optical communication, etc., at the short span cable. CONSTITUTION:The long span cable 1 and the short span cable 2 are housed in parallel in a tunnel, etc. Plural manholes 7 through which a person comes in and goes out are placed at the tunnel, etc. Cable coupling parts 3 which connect the long span cable 1 to the short span cable 2 are placed at the position of the manholes 7. Also, the branch wiring parts 6 are placed at the manholes 7 located among those cable coupling parts 3. Therefore, wiring from a station 4 to the subscriber 5 is performed up to the cable coupling part 3 nearby passing the long span cable 1, and is performed up to a branch wiring part 6 for subscriber passing the short span cable 2, which reduces the wiring to the subscriber 5. |
