TAT-1 opens with 36 telephone circuits
The first transatlantic telephone cable entered service between Gallanach Bay near Oban and Clarenville in Newfoundland, and was inaugurated at a ceremony in London. Its capacity was 36 simultaneous telephone circuits — the entire live voice capacity between two continents. A minority of sources give 26 September; the majority give 25 September, and this pack records the discrepancy rather than resolving it.
Historical — it happened, and the record is settled.
Subjects
- TAT-1 · infrastructure · North Atlantic · not located
- The submarine optical repeater · technology · not located
Evidence
Partly verified — Core facts are sourced; some optional detail is deliberately absent.
IEEE Milestones: the first submarine transatlantic telephone cable (TAT-1), 1956, and the transatlantic fibre-optic submarine cable (TAT-8), 1988
Supports the TAT-1 route (Gallanach Bay near Oban to Clarenville, Newfoundland), its 36 telephone circuits and its 25 September 1956 inauguration, and the TAT-8 route, its 280 Mbit/s on two working fibre pairs, its roughly 40,000 circuits and its entry into service on 14 December 1988. V55 verification basis: retrieved by search, not opened. One retrieved source gives 26 rather than 25 September 1956 for TAT-1 entering service, and this pack records that discrepancy instead of resolving it.
IEEE / Engineering and Technology History Wiki · Partly verified
IEEE Milestone records for TAT-1 (1956) and TAT-8 (1988), ethw.org
Recorded on TAT-1
- TAT-1 opens with 36 telephone circuits
- The erbium-doped fibre amplifier is demonstrated
- TAT-8, the first transoceanic fibre cable, enters service
Related
Related because they share a subject in the Atlas — never because the text looks similar.