…In urban centers, underground cables are often laid through tunnels or conduits, but at the ends they are raised above ground and run as overhead cables on utility poles to each subscriber's home. The subscriber cable from the telephone exchange to the connection terminal box where this wiring connection is made is called a feeder cable, and the cable beyond that is called a distribution cable. When there are multiple telephone exchanges in the same city area, they are connected to each other using relay cables for inter-exchange relay. … *Some of the terminology that refers to "feeder cable" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…都市中心部ではとう(洞)道や管路内を通した地下ケーブルが多いが,末端部では地上に立ち上げ,電柱を用いた架空ケーブルとして各加入者宅に配線する。電話局からこの配線接続を行う接続端子箱までの加入者ケーブルを饋(き)線ケーブル,その先を配線ケーブルという。同一市内区域に複数の電話局がある場合には局間中継用の中継ケーブルを用いて相互に接続される。… ※「饋線ケーブル」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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