Matches in DBpedia 2015-10 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 wikiPageLength "6662".
- Ringdown wikiPageOutDegree "40".
- Ringdown wikiPageRevisionID "682021081".
- Ringdown wikiPageWikiLink 1A2.
- Ringdown wikiPageWikiLink 1A2_Key_Telephone_System.
- Ringdown wikiPageWikiLink Air_traffic_control.
- Ringdown wikiPageWikiLink Analog_telephone_adapter.
- Ringdown wikiPageWikiLink Bell_System.
- Ringdown wikiPageWikiLink Bryant_Pond,_Maine.
- Ringdown wikiPageWikiLink Business_telephone_system.
- Ringdown wikiPageWikiLink CUCM.
- Ringdown wikiPageWikiLink Call_Manager.
- Ringdown wikiPageWikiLink Calling_Party_Control.
- Ringdown wikiPageWikiLink Calling_party_control.
- Ringdown wikiPageWikiLink Category:Communication_circuits.
- Ringdown wikiPageWikiLink Category:Telephony_equipment.
- Ringdown wikiPageWikiLink Cisco.
- Ringdown wikiPageWikiLink Cisco_Systems.
- Ringdown wikiPageWikiLink Control_tower.
- Ringdown wikiPageWikiLink Courtesy_phone.
- Ringdown wikiPageWikiLink Courtesy_telephone.
- Ringdown wikiPageWikiLink Dedicated_line.
- Ringdown wikiPageWikiLink Dialing.
- Ringdown wikiPageWikiLink Dialling.
- Ringdown wikiPageWikiLink Hotline.
- Ringdown wikiPageWikiLink Independent_System_Operator.
- Ringdown wikiPageWikiLink Intercom.
- Ringdown wikiPageWikiLink Key_Telephone_Unit.
- Ringdown wikiPageWikiLink Key_telephone_system.
- Ringdown wikiPageWikiLink Non-dialable_point.
- Ringdown wikiPageWikiLink Off-hook.
- Ringdown wikiPageWikiLink On-hook.
- Ringdown wikiPageWikiLink Party_line_(telephony).
- Ringdown wikiPageWikiLink Private_branch_exchange.
- Ringdown wikiPageWikiLink Regional_transmission_organization.
- Ringdown wikiPageWikiLink Relay.
- Ringdown wikiPageWikiLink Session_Initiation_Protocol.
- Ringdown wikiPageWikiLink Signaling_(telecommunications).
- Ringdown wikiPageWikiLink Signalling_(telecommunication).
- Ringdown wikiPageWikiLink Switchboard_operator.
- Ringdown wikiPageWikiLink Telephone.
- Ringdown wikiPageWikiLink Telephone_exchange.
- Ringdown wikiPageWikiLink Telephone_line.
- Ringdown wikiPageWikiLink Telephone_magneto.
- Ringdown wikiPageWikiLink Telephone_switchboard.
- Ringdown wikiPageWikiLink Telephony.
- Ringdown wikiPageWikiLink Voice_over_IP.
- Ringdown wikiPageWikiLink Wire_spring_relay.
- Ringdown wikiPageWikiLink Woodstock,_Maine.
- Ringdown wikiPageWikiLink File:Jimmy_Carter_Library_and_Museum_99.JPG.
- Ringdown wikiPageWikiLinkText "Private line automatic ringdown".
- Ringdown wikiPageWikiLinkText "Ringdown".
- Ringdown wikiPageWikiLinkText "automatic ringdown circuit".
- Ringdown wikiPageWikiLinkText "magneto crank telephones".
- Ringdown wikiPageWikiLinkText "non-dialed connection".
- Ringdown wikiPageWikiLinkText "ringdown".
- Ringdown wikiPageWikiLinkText "secure line".
- Ringdown hasPhotoCollection Ringdown.
- Ringdown wikiPageUsesTemplate Template:Distinguish.
- Ringdown wikiPageUsesTemplate Template:FS1037C_MS188.
- Ringdown wikiPageUsesTemplate Template:Main.
- Ringdown wikiPageUsesTemplate Template:Redirect.
- Ringdown wikiPageUsesTemplate Template:Reflist.
- Ringdown wikiPageUsesTemplate Template:Telecommunications.
- Ringdown subject Category:Communication_circuits.
- Ringdown subject Category:Telephony_equipment.
- Ringdown hypernym Method.
- Ringdown type Article.
- Ringdown type Software.
- Ringdown type Article.
- Ringdown type Circuit.
- Ringdown type Source.
- Ringdown type Thing.
- 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 differentFrom Selective_calling.
- Ringdown sameAs m.0bfyk.
- Ringdown sameAs Q7334841.
- Ringdown sameAs Q7334841.
- Ringdown wasDerivedFrom Ringdown?oldid=682021081.
- Ringdown depiction Jimmy_Carter_Library_and_Museum_99.JPG.
- Ringdown isPrimaryTopicOf Ringdown.