switchhook
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Telephone — The telephone (from the el. τῆλε, tēle , far and φωνή, phōnē , voice ) is a telecommunications device that is used to transmit and receive sound (most commonly speech), usually two people conversing but occasionally three or more. It is one of… … Wikipedia
GPO telephones — The United Kingdom s General Post Office (GPO) had a number of telephones that were provided by them for connection to their exchanges. Until 1982 the GPO had a monopoly on the provision of all telephones within the UK and so the range was… … Wikipedia
Off-hook — In telephony, the term off hook has the following meanings: The condition that exists when a telephone or other user instrument is in use, i.e., during dialing or communicating. Note: off hook originally referred to the condition that prevailed… … Wikipedia
On-hook — In telephony, the term on hook has the following meanings: The condition that exists when a telephone or other user instrument is not in use, i.e., when idle waiting for a call. Note: on hook originally referred to the storage of an idle… … Wikipedia
Trimline telephone — The Western Electric Trimline telephone is a variety of telephone set designed by Henry Dreyfuss Associates for the Bell System (AT T). It was built by the Bell System s manufacturing arm, Western Electric. The idea behind the Trimline telephone… … Wikipedia
Model 500 telephone — Western Electric model 500 set made in 1951 By 1975, the Model 500 layout … Wikipedia
Hook flash — (sometimes labeled flash ) is a button on a telephone that simulates quickly hanging up then picking up again (a quick off hook/on hook/off hook cycle). This action can signal the telephone exchange to do something. A common use of hook flash is… … Wikipedia
Centrex — This article is about the type of telephone exchange. For the British police training agency, see Centrex (police training agency). For the Gazprom related group of companies, see Centrex Europe Energy Gas AG. Typical standard phone used with… … Wikipedia
Telephone hook — A telephone hook or switchhook is the cradle where a telephone handset resides. It takes its name from old wooden wall telephones, where the mouthpiece was usually mounted on the telephone box and the receiver was separate, on a cable. When the… … Wikipedia
Design Line telephone — Design Line is a brand that AT T has used on several of its telephones, also known as Deco Tel. Contents 1 Pre divestiture Design Line 2 Post divestiture design line 3 Gallery 4 … Wikipedia
