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British telephone sockets were introduced in their current plug and socket form on 19 November 1981 by British Telecom to allow subscribers to connect their own telephones. The connectors are specified in British Standard BS 6312 .
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For example, telephone cables in the UK typically have a BS 6312 (UK standard) plug at the wall end and a 6P4C or 6P2C modular connector at the telephone end: this latter may be wired as per the RJ11 standard (with pins 3 and 4), or it may be wired with pins 2 and 5, as a straight-through cable from the BT plug (which uses pins 2 and 5 for the ...
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List of the mainly electro mechanical switching systems from Hasler AG Bern, which were used in public telephone network in Switzerland for many decades. Hasler AG finally merged into Ascom in 1987. HS 25 (modified from the Ericsson OL-100 system with double relays and 25-point selector (Ericsson license), mainly used for small villages and ...
[2] [3] The British telephone sockets were introduced on 19 November 1981. On 19 July 1982, the government announced its desire to privatise BT, which happened in late 1984. By 1982, 15 million British homes had a phone, with 5 out of 6 only having one phone. Adding an extra phone without the new sockets was heavy work.
Telecommunications in the United Kingdom have evolved from the early days of the telegraph to modern fibre broadband and high-speed 5G networks. History Company logo on porch of 17 & 19 Newhall Street, Birmingham (former Central exchange) National Telephone Company (NTC) was a British telephone company from 1881 until 1911, which brought together smaller local companies in the early years of ...
However, the omission of Marconi from BT's 21CN supplier list, and the shift in focus from telephony to broadband, led to much of the System X estate being maintained. The switched telephone network (both PSTN and ISDN) is due to be turned off on 31 January 2027, after customers are moved to voice over IP services. [4] [5]