Telephone line
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A telephone line or telephone circuit is a single-user circuit on a telephone communication system. It is designed to reproduce speech of a quality that is understandable. It is the physical wire or o
Utility pole with electric lines (top) and telephone cables.
Cross section of telephone cable of 1,800 twisted pairs, 1922.
A newer telephone cable used to carry telephone lines from several customers
Copper conductor
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Copper has been used in electrical wiring since the invention of the electromagnet and the telegraph in the 1820s. The invention of the telephone in 1876 created further demand for copper wire as an e
Copper wires
Copper cable
Coaxial cable made from copper
F connectors attached to coaxial cables are used for TV aerial and satellite dish connections to a TV or set top box.