Ringdown
id:
ringdown-200-10747569
title:
Ringdown
text:
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, and is 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 tele
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Ringdown
date created:
date modified:
2024-02-25T09:08:49Z
main entity:
{"identifier":"Q7334841","url":"https://www.wikidata.org/entity/Q7334841"}
image:
fields total:
13
integrity:
13