An operator wearing earphone was sitting in the telephone exchange.

戴耳机的接线员正坐在总机室里。

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As regards economy, early studies offered significant advantages since a substantial quantity of interface equipment in the telephone exchange could be eliminated.

至于经济性，早期的研究表明，由于数字业务可以省掉电话交换中大量的接口设备，因而具有重要的优势。

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The number of telephone lines connecting the subscriber's terminal equipment to the public switched network and which have a dedicated port in the telephone exchange equipment.

连接用户终端设备和公用交换网并具有一个电话交换设备专用端口的电话线数。

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Staff walked out at BT's Riverside Place building in Belfast and the telephone exchange in Enniskillen.

BBC: BT workers go on strike

When there were telephone exchanges, the mind was like a telephone exchange, and, in the same period, since the nickelodeon reigned, moving pictures were making us dumb.

NEWYORKER: The Information

It is housed in a former telephone exchange, Hermes House, in the Castel, and was inaugurated as a museum in 1976.

BBC: Guernsey's Telephone Museum prepares for final season