Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Ringdown> ?p ?o. }
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- Ringdown abstract "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.".
- Ringdown thumbnail Jimmy_Carter_Library_and_Museum_99.JPG?width=300.
- Ringdown wikiPageExternalLink index.php?main_page=product_info&products_id=20.
- Ringdown wikiPageExternalLink configuring-plar-on-cucm-v6-1.
- Ringdown wikiPageID "41669".
- Ringdown wikiPageRevisionID "583591738".
- Ringdown hasPhotoCollection Ringdown.
- Ringdown subject Category:Communication_circuits.
- Ringdown subject Category:Telephony_equipment.
- Ringdown type Artifact100021939.
- Ringdown type Circuit103033362.
- Ringdown type CommunicationCircuits.
- Ringdown type Device103183080.
- Ringdown type ElectricalDevice103269401.
- Ringdown type Instrumentality103575240.
- Ringdown type Object100002684.
- Ringdown type PhysicalEntity100001930.
- Ringdown type Whole100003553.
- Ringdown comment "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.".
- Ringdown label "Ringdown".
- Ringdown sameAs m.0bfyk.
- Ringdown sameAs Q7334841.
- Ringdown sameAs Q7334841.
- Ringdown sameAs Ringdown.
- Ringdown wasDerivedFrom Ringdown?oldid=583591738.
- Ringdown depiction Jimmy_Carter_Library_and_Museum_99.JPG.
- Ringdown isPrimaryTopicOf Ringdown.
