About: Panel switch

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The Panel Machine Switching System is a type of automatic telephone exchange for urban service that was used in the Bell System in the United States for seven decades. The first semi-mechanical types of this design were installed in 1915 in Newark, New Jersey, and the last were retired in the same city in 1983.

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rdf:type	yago:WikicatTelephoneExchanges yago:Central102994858 yago:GeographicPoint108578706 yago:Location100027167 yago:Object100002684 yago:PhysicalEntity100001930 yago:Point108620061 yago:Workplace104602044 yago:YagoGeoEntity yago:YagoLegalActorGeo yago:YagoPermanentlyLocatedEntity
rdfs:label	Panel switch (en)
rdfs:comment	The Panel Machine Switching System is a type of automatic telephone exchange for urban service that was used in the Bell System in the United States for seven decades. The first semi-mechanical types of this design were installed in 1915 in Newark, New Jersey, and the last were retired in the same city in 1983. (en)
foaf:depiction
dcterms:subject	History of the telephone Bell System Telephone exchange equipment
Wikipage page ID	50350318 (xsd:integer)
Wikipage revision ID	1104176240 (xsd:integer)
Link from a Wikipage to another Wikipage	Metering pulse Belgium Bell System Horsepower Paterson, New Jersey Payphone Number One Crossbar Switching System History of the telephone Switchboard operator Telephone number Reorder tone On-hook Cord circuit Bell System Common control Party line (telephony) Strowger Automatic Telephone Exchange Company Strowger switch Telephone switchboard Line signaling Local loop AT&T Almon Brown Strowger Telephone exchange equipment Direct distance dialing Telephone exchange Pulse dialing Relay Automatic message accounting Automatic number identification Busy signal Phone connector (audio) Photographic plate Panel Call Indicator Telephone dial Newark, New Jersey Multi-frequency Rotary system Sender Flat rate Multi-frequency signaling Off-hook Western Electric Company
Link from a Wikipage to an external page	http://www.wideweb.com/phonetrips http://www.telephonetribute.com/switches_survey_chapter_5.html https://web.archive.org/web/20110725232815/http:/www.phworld.org/sounds/vintage/misc/oldphone.mp3 https://www.flickr.com/photos/9479603@N02/4672056486/ https://www.flickr.com/photos/9479603@N02/albums/72157602826941455 https://www.youtube.com/watch%3Fv=4TFhU99Ihtg
sameAs	Panel switch Panel switch Panel switch
dbp:wikiPageUsesTemplate	dbt:Reflist dbt:Telephone_Switches
thumbnail	wiki-commons:Special:FilePath/Panel_Switch_District_Selector.jpg?width=300
has abstract	The Panel Machine Switching System is a type of automatic telephone exchange for urban service that was used in the Bell System in the United States for seven decades. The first semi-mechanical types of this design were installed in 1915 in Newark, New Jersey, and the last were retired in the same city in 1983. The Panel switch was named for its tall panels which consisted of layered strips of terminals. Between each strip was placed an insulating layer, which kept each metal strip electrically isolated from the ones above and below. These terminals were arranged in banks, five of which occupied an average selector frame. Each bank contained 100 sets of terminals, for a total of 500 sets of terminals per frame. At the bottom, the frame had two electric motors to drive sixty selectors up and down by electromagnetically controlled clutches. As calls were completed through the system, selectors moved vertically over the sets of terminals until they reached the desired location, at which point the selector stopped its upward travel, and selections progressed to the next frame, until finally, the called subscriber's line was reached. (en)
gold:hypernym	Type
prov:wasDerivedFrom	wikipedia-en:Panel_switch?oldid=1104176240&ns=0
page length (characters) of wiki page	29279 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Panel_switch
is Link from a Wikipage to another Wikipage of	Electromechanics Bell Laboratories Building (Manhattan) Number Five Crossbar Switching System Number One Crossbar Switching System Timeline of the telephone Connections Museum Crossbar switch 1975 New York Telephone exchange fire Common control Panel

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