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- Panel_switch abstract "The panel switching system was an early type of automatic telephone exchange, first put into urban service by the Bell System in the 1920s and removed during the 1970s. The Panel and Rotary systems were developed in parallel by Western Electric Labs (later called Bell Labs) in the U.S. and International Western Electric in Belgium before World War I, and had many features in common, though the Rotary system was used in Europe. 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 non-dial telephones. The next installation was in the Waverly C.O. June 12th. of the same year, also in Newark, NJ.The Panel Machine Switching System (M.S.S.) 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, any of which had 100 terminals among which it could select, arranged in groups. Pulses were sent back from the selector to a Register which had received the dialled digits, rather than forward as in the SXS system, hence the signaling was called "Revertive Pulse".".
- Panel_switch thumbnail Panel_switch_district_selector_frame.jpg?width=300.
- Panel_switch wikiPageExternalLink ?page_id=12.
- Panel_switch wikiPageExternalLink panel%201.shtml.
- Panel_switch wikiPageExternalLink Telephone_Cables.
- Panel_switch wikiPageExternalLink set-72157602826941455.
- 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 wikiPageID "2678240".
- Panel_switch wikiPageRevisionID "600521985".
- Panel_switch hasPhotoCollection Panel_switch.
- Panel_switch subject Category:Bell_System.
- Panel_switch subject Category:History_of_the_telephone.
- Panel_switch subject Category:Telephone_exchanges.
- Panel_switch type Central102994858.
- Panel_switch type GeographicPoint108578706.
- Panel_switch type Location100027167.
- Panel_switch type Object100002684.
- Panel_switch type PhysicalEntity100001930.
- Panel_switch type Point108620061.
- Panel_switch type TelephoneExchanges.
- Panel_switch type Workplace104602044.
- Panel_switch type YagoGeoEntity.
- Panel_switch type YagoLegalActorGeo.
- Panel_switch type YagoPermanentlyLocatedEntity.
- Panel_switch comment "The panel switching system was an early type of automatic telephone exchange, first put into urban service by the Bell System in the 1920s and removed during the 1970s. The Panel and Rotary systems were developed in parallel by Western Electric Labs (later called Bell Labs) in the U.S. and International Western Electric in Belgium before World War I, and had many features in common, though the Rotary system was used in Europe.".
- Panel_switch label "Panel switch".
- Panel_switch sameAs m.07xcv5.
- Panel_switch sameAs Q17156811.
- Panel_switch sameAs Q17156811.
- Panel_switch sameAs Panel_switch.
- Panel_switch wasDerivedFrom Panel_switch?oldid=600521985.
- Panel_switch depiction Panel_switch_district_selector_frame.jpg.
- Panel_switch isPrimaryTopicOf Panel_switch.