Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Panel_switch> ?p ?o }
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- Panel_switch abstract "The Panel switching system was an early type of automatic telephone exchange for primarily urban service, first introduced in the Bell System in the 1920s and replaced by modern systems during the 1970s. It was developed by Western Electric Labs, later called Bell Labs, in the U.S. in parallel with the Rotary system at International Western Electric in Belgium before World War I which was used in Europe. Both systems had many features in common.The first Panel exchange was installed at the Mulberry Central Office in Newark, New Jersey. It was placed in service on January 16, 1915. It was a semi-automatic system using telephones without a dial. Operators answered calls and keyed the station number into the panel switch. The next installation was in the Waverly central office on June 12 of the same year, also in Newark.The Panel Machine Switching System was named for its tall panels covered with 500 rows of terminals. Each panel had an electric motor to drive its, usually sixty, selectors by electromagnetically controlled clutches. The selector was similar in effect to a stepping switch though it moved continuously rather than in steps. Each selector had five brushes, each of which could select from 100 terminals arranged in groups. Pulses were sent back from the selector to a register, which had received the dialed digits, rather than forward as in the Strowger switch step-by-step (SXS) system, hence the signaling was called revertive pulsing.".
- Panel_switch thumbnail Panel_switch_district_selector_frame.jpg?width=300.
- Panel_switch wikiPageExternalLink ?page_id=12.
- Panel_switch wikiPageExternalLink 4672056486.
- Panel_switch wikiPageExternalLink 72157602826941455.
- Panel_switch wikiPageExternalLink oldphone.mp3.
- Panel_switch wikiPageExternalLink switches_survey_chapter_5.html.
- Panel_switch wikiPageExternalLink phonetrips.
- Panel_switch wikiPageExternalLink watch?v=4TFhU99Ihtg.
- Panel_switch wikiPageID "2678240".
- Panel_switch wikiPageLength "14311".
- Panel_switch wikiPageOutDegree "52".
- Panel_switch wikiPageRevisionID "665521786".
- Panel_switch wikiPageWikiLink 1ESS_switch.
- Panel_switch wikiPageWikiLink 1XB_switch.
- Panel_switch wikiPageWikiLink 5XB_switch.
- Panel_switch wikiPageWikiLink Automatic_message_accounting.
- Panel_switch wikiPageWikiLink Automatic_number_identification.
- Panel_switch wikiPageWikiLink Baud.
- Panel_switch wikiPageWikiLink Bell_Labs.
- Panel_switch wikiPageWikiLink Bell_System.
- Panel_switch wikiPageWikiLink Calling_party.
- Panel_switch wikiPageWikiLink Category:Bell_System.
- Panel_switch wikiPageWikiLink Category:History_of_the_telephone.
- Panel_switch wikiPageWikiLink Category:Telephone_exchange_equipment.
- Panel_switch wikiPageWikiLink Class-4_telephone_switch.
- Panel_switch wikiPageWikiLink Common_control.
- Panel_switch wikiPageWikiLink Cord_circuit.
- Panel_switch wikiPageWikiLink Direct_Distance_Dialing.
- Panel_switch wikiPageWikiLink Direct_distance_dialing.
- Panel_switch wikiPageWikiLink Director_telephone_system.
- Panel_switch wikiPageWikiLink File:Panel_Sender_Alarm_Prime_and_Make_Busy_panel.jpg.
- Panel_switch wikiPageWikiLink Flat_rate.
- Panel_switch wikiPageWikiLink Line_signaling.
- Panel_switch wikiPageWikiLink Line_signalling.
- Panel_switch wikiPageWikiLink Metering_pulse.
- Panel_switch wikiPageWikiLink Multi-frequency.
- Panel_switch wikiPageWikiLink Multi-frequency_signaling.
- Panel_switch wikiPageWikiLink Newark,_New_Jersey.
- Panel_switch wikiPageWikiLink Number_Five_Crossbar_Switching_System.
- Panel_switch wikiPageWikiLink Number_One_Crossbar_Switching_System.
- Panel_switch wikiPageWikiLink Off-hook.
- Panel_switch wikiPageWikiLink On-hook.
- Panel_switch wikiPageWikiLink Panel_Call_Indicator.
- Panel_switch wikiPageWikiLink Panel_call_indicator.
- Panel_switch wikiPageWikiLink Payphone.
- Panel_switch wikiPageWikiLink Phone_connector_(audio).
- Panel_switch wikiPageWikiLink Photographic_film.
- Panel_switch wikiPageWikiLink Pulse_dialing.
- Panel_switch wikiPageWikiLink Register_signaling.
- Panel_switch wikiPageWikiLink Reorder_tone.
- Panel_switch wikiPageWikiLink Rotary_dial.
- Panel_switch wikiPageWikiLink Rotary_system.
- Panel_switch wikiPageWikiLink Sender.
- Panel_switch wikiPageWikiLink Stepping_switch.
- Panel_switch wikiPageWikiLink Strowger_switch.
- Panel_switch wikiPageWikiLink Switchboard_operator.
- Panel_switch wikiPageWikiLink Tandem_switch.
- Panel_switch wikiPageWikiLink Telephone_dial.
- Panel_switch wikiPageWikiLink Telephone_exchange.
- Panel_switch wikiPageWikiLink Telephone_line.
- Panel_switch wikiPageWikiLink Telephone_number.
- Panel_switch wikiPageWikiLink Telephone_switchboard.
- Panel_switch wikiPageWikiLink Timeout_(computing).
- Panel_switch wikiPageWikiLink Timeout_(telecommunication).
- Panel_switch wikiPageWikiLink Tip_and_ring.
- Panel_switch wikiPageWikiLink File:Panel_GCO_Line_Finder_Brushes.jpg.
- Panel_switch wikiPageWikiLink File:Panel_Office_Typical_OGT-colourbalance-2.jpg.
- Panel_switch wikiPageWikiLink File:Panel_switch_district_selector_frame.jpg.
- Panel_switch wikiPageWikiLink File:Sdr_Relays_Closeup_With_Hand.jpg.
- Panel_switch wikiPageWikiLinkText "Panel switch".
- Panel_switch wikiPageWikiLinkText "Panel system".
- Panel_switch wikiPageWikiLinkText "Panel".
- Panel_switch wikiPageWikiLinkText "earlier systems".
- Panel_switch wikiPageWikiLinkText "other exchange types".
- Panel_switch wikiPageWikiLinkText "panel switch".
- Panel_switch wikiPageWikiLinkText "panel type".
- Panel_switch wikiPageWikiLinkText "panel".
- Panel_switch hasPhotoCollection Panel_switch.
- Panel_switch wikiPageUsesTemplate Template:Reflist.
- Panel_switch wikiPageUsesTemplate Template:Telephone_Switches.
- Panel_switch subject Category:Bell_System.
- Panel_switch subject Category:History_of_the_telephone.
- Panel_switch subject Category:Telephone_exchange_equipment.
- Panel_switch hypernym Type.
- Panel_switch type Company.
- Panel_switch type Company.
- Panel_switch type Exchange.
- Panel_switch type Switch.
- Panel_switch comment "The Panel switching system was an early type of automatic telephone exchange for primarily urban service, first introduced in the Bell System in the 1920s and replaced by modern systems during the 1970s. It was developed by Western Electric Labs, later called Bell Labs, in the U.S. in parallel with the Rotary system at International Western Electric in Belgium before World War I which was used in Europe.".
- Panel_switch label "Panel switch".
- Panel_switch sameAs m.07xcv5.
- Panel_switch sameAs Q17156811.
- Panel_switch sameAs Q17156811.
- Panel_switch wasDerivedFrom Panel_switch?oldid=665521786.
- Panel_switch depiction Panel_switch_district_selector_frame.jpg.
- Panel_switch isPrimaryTopicOf Panel_switch.