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Phoneword. Many telephone keypads have letters with the numbers, from which words can be formed. Phonewords are mnemonic phrases represented as alphanumeric equivalents of a telephone number. [1] In many countries, the digits on the telephone keypad also have letters assigned. By replacing the digits of a telephone number with the corresponding ...
An old rotary dial telephone. AT&T push button telephone made by Western Electric, model 2500 DMG black, 1980. A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice ...
A telephone number serves as an address for switching telephone calls using a system of destination code routing. [1] Telephone numbers are entered or dialed by a calling party on the originating telephone set, which transmits the sequence of digits in the process of signaling to a telephone exchange.
The number of simultaneous listeners is limited because there is no amplification of the signal. A sound-powered telephone circuit can be as simple as two handsets connected together with a pair of wires, which is defined as the "talk" portion of the circuit. Talk circuits can be realized over a pair of wires that are 50 km (30 miles) long.
To operate a blue box, the user placed a long-distance telephone call, often to a number that was in the target area. Usually, this initial call would be to a 1-800 number or some other non-supervising telephone number such as directory assistance. Using a toll-free number ensured that the phone being used for access would not be billed.
Talking Telephone Numbers is a British game show that aired on ITV from 28 February 1994 to 29 December 1997 and was hosted by Phillip Schofield and initially Emma Forbes, who was later replaced by Claudia Winkleman. The show's format featured variety acts which were used to generate numbers. Viewers had the chance to win up to £25,000 if the ...
In the mathematics of chess, the telephone numbers count the number of ways to place n rooks on an n × n chessboard in such a way that no two rooks attack each other (the so-called eight rooks puzzle ), and in such a way that the configuration of the rooks is symmetric under a diagonal reflection of the board. Via the Pólya enumeration ...
The Chatter Telephone is a pull toy for toddlers 12 to 36 months of age. Introduced in 1961 by the Fisher-Price company as the "Talk Back Phone" for infants and children, which was updated to the name Chatter Telephone in 1962, is a roll along pull toy. It has a smiling face, and when the toy is pulled, it makes a chattering sound and the eyes ...