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#telephone_switchboard

Telephone switchboard

Device used to connect telephone circuits to establish calls between users

A telephone switchboard is a device used to connect circuits of telephones to establish telephone calls between users or other switchboards. The switchboard is an essential component of a manual telephone exchange, and is operated by switchboard operators who use electrical cords or switches to establish the connections.

Thu 5th

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Telephone switchboard Switchboard operator Telephone exchange Switchboard Telephone number History of the telephone in the United States History of the telephone Hello Girls Field telephone Rotary dial
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