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ringdown
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The answer RINGDOWN has 1 possible clue(s) in existing crosswords.
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The word RINGDOWN is NOT valid in any word game. (Sorry, you cannot play RINGDOWN in Scrabble, Words With Friends etc)
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Definitions of ringdown in various dictionaries:
RINGDOWN - In telephony, ringdown is a method of signaling an operator in which telephone ringing current is sent over the line to operate a lamp or cause the o...
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Possible Crossword Clues |
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Call room service, perhaps, to do something with curtain |
Last Seen in these Crosswords & Puzzles |
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Apr 7 2010 The Times - Cryptic |
Ringdown description |
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In telephony, ringdown is a method of signaling an operator in which telephone ringing current is sent over the line to operate a lamp or cause the operation of a self-locking relay known as a drop. * Ringdown is used in manual operation, as distinguished from automatic signaling by dialing a number. The signal consists of a continuous or pulsed alternating current (AC) signal transmitted over the line. It may be used with or without a telephone switchboard. The term originated in magneto telephone signaling in which cranking the magneto generator, either integrated into the telephone set or housed in a connected ringer box, would not only ring its bell but also cause a drop to fall down at the telephone exchange switchboard, marked with the number of the line to which the magneto telephone instrument was connected. * The last ringdown telephone exchange in the United States was located at Bryant Pond, Maine, had 400+ subscribers, and converted to dial service in October 1983.* |