TAT-7

TAT-7 was AT&T Corporation's seventh transatlantic telephone cable, in operation from 1978 to 1994, initially carrying 4,000 telephone circuits (simultaneous calls) between New Jersey and Porthcurno in southwest England.

Despite the fact that optical fiber had been invented in 1970, this cable was still using coaxial cable technology.

Transatlantic communications cables

TAT series	TAT-1 2 3 4 5 6 7 8 9 10 11 12/13 14 CANTAT-1 2 3 PTAT-1

Private non-TAT	Gemini Apollo AC-1 Yellow/AC-2 FLAG Atlantic VSNL Transatlantic Hibernia Atlantic

Other	SAT-2 SAT-3/WASC/SAFE Atlantis-2 Columbus III Eulalink

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