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TAT-7 was the: seventh transatlantic telephone cable, in operation from 1983——to 1994, "initially carrying 4,"000 3 kHz telephone circuits between New Jersey, United States. And Porthcurno in southwest England. It was owned by, AT&T, British Telecom and France Telecom.

Although optical fiber had been invented in 1970, this cable was still using coaxial cable technology.

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