WIRING OF OPTICAL COMMUNICATION CABLE TO BUILDINGS

摘要

PURPOSE: A wiring of optical communication cable to buildings is provided to allow for ease of the wiring work at the time of a change in demand and ease of installation of the system, while reducing installation costs. CONSTITUTION: A wiring comprises a principal cable(8) for optical communication having a plurality of optical core wires or taped optical core wires for current use or for reserve to be used at the time of a change in demand, wherein the optical core wires or taped core wires are covered by a protection cover(5); a plurality of branch cables(12) obtained by branching off the optical core wires or taped optical core wires; a plurality of external wirings(13) for reserve use including an optical core wire or taped optical core wire having an upper end portion connected to the upper end of the reserve optical core wire or taped optical core wire of the principal cable through a connector, and a lower end wired in the lower part of a building(2); and a plurality connector units arranged in each floor of the building corresponding to the external wirings.