TAT-7TAT-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, and was the last copper cable to be laid across the Atlantic.[1] Although optical fiber had been invented in 1970, this cable was still using coaxial cable technology. References
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