4線式回線 - List of Manufacturers, Suppliers, Companies and Products

4線式回線 Product List

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搬送端局等の分岐点に設置して、４線式電話回線の分岐回線を構成し、多数の４線式電話機端末を分岐接続するため使用する装置です。

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4線式回線

4線式回線 - List of Manufacturers, Suppliers, Companies and Products | IPROS