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A domestic single British telephone line installation will have a single master socket or line box in the premises, which is provided by BT or another service provider: this socket is the demarcation point between the customer-owned and maintained on-premises wiring, and the telephone network.
A typical volume of Bell System Practices from the 1970s. The Bell System Practices (BSPs) is a compilation of technical publications which describes the best methods of engineering, constructing, installing, and maintaining the telephone plant of the Bell System under direction of AT&T and Bell Telephone Laboratories. [1]
Two cordless telephones 3 VTech cordless landline phones A Panasonic KX-TG2226B 2.4GHz cordless phone with answering machine. A cordless telephone or portable telephone has a portable telephone handset that connects by radio to a base station connected to the public telephone network. The operational range is limited, usually to the same ...
1-5-7-1 is a family of calling features in the United Kingdom, for residential and business telephone lines and for mobile telephones, that are provided by BT Group and several other telephone service providers. The family is named after the telephone number 1571, the special service number that is used to access it.
1981: BT introduces the British Telephone Sockets system. 1982: FCC approved AT&T proposal for AMPS and allocated frequencies in the 824-894 MHz band. 1982: Caller ID patented by Carolyn Doughty, Bell Labs; 1983: last manual telephone switchboard in Maine is retired; 1984: AT&T completes the divestiture of its local operating companies.
KX100 telephone box with 1991 branding. The KX series of telephone boxes in the United Kingdom was introduced by BT (British Telecom) in 1985. Following the privatisation of BT in 1984, the company decided to create a newly designed and improved take on the British telephone box, which at this point consisted of only red telephone boxes which BT had recently acquired, the most common being the ...
Telephone House, 2-4 Temple Avenue, London. (The building was taken over by the GPO in 1912 and continued to house BT's archives and other offices into the 1990s). In 1899 it commissioned Telephone House in London's Temple Lane. The building still bears the company's NT logo and some cherubs holding what appear to be old style telephone handsets.
Manual service is telephone service in which a human telephone operator routes calls as instructed by a subscriber with a telephone set that does not have a dial. Dial service is when an exchange routes calls by interpreting subscriber-dialed digits. A telephone switch is the switching equipment of an exchange.