COMMUNICATION TRANSMISSION LINE INSIDE AND OUTSIDE BUILDING, AND METHOD FOR LAYING EXTERNAL COMMUNICATION CABLE

摘要

PROBLEM TO BE SOLVED: To provide a communication transmission line inside and outside a building permitting to lay an optical cable within a short period of time at low costs for residents in the building by reducing the number of supports of vertical wiring path without performing a large scale of work such as drilling into building floors, and to provide a method for laying an external communication cable.;SOLUTION: In the communication transmission line inside and outside the building for connecting the external communication cable 3 to a distribution panel 11 prepared on each floor, a distributor connecting cable 7 for connecting an external communication cable connector 8 prepared in a hoistway wall 32 in contact with the ceiling 52 of each floor or in the ceiling 52 to a distributor 11 in a same floor, and an external communication crossing cable 5 located in the hoistway 30 for connecting between each external communication cable connector 8 are installed. The external communication cable connector 8 is prepared on the hoistway wall 32 in contact with the floor of each story, inside a joint box 55 prepared above the floor, on the hoistway wall 32 in contact with a raised floor of each story, or inside the raised floor part.;COPYRIGHT: (C)2007,JPO&INPIT