It was initially used as a telephone operation center, and later, was turned into the west hall of Kyoto Telegraph and Telephone building of Nippon Telegraph and Telephone Public Corporation, Nippon Telegraph and Telephone Corporation, and then the Nippon Telegraph and Telephone West Corporation.
建設当初は電話交換オペレーションセンターとして使用され、のちに日本電信電話公社、日本電信電話、西日本電信電話の京都電電ビル西館となった。