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Tele-Communication (Telecom) Terms Glossary and Dictionary
TAT-12/13
TAT-12 is former AT&T's 12th and 13th transatlantic telephone cables in a ring structure which has been in operation since 1996, initially carrying 2x5 Gbit/s. This was the first TAT cable to use a ring structure, involving two stretches of cable across the ocean floor, which explains why two numbers (12 and 13) were used. All later cables also use a ring structure, but only use one number, TAT-14 etc.
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