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Panel switch

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.

History & Measurement

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Topics to explore

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Overview

History

Operational overview

Telephone numbering

Circuit features

Sender

Compatibility

Motor power

Advanced semantic analysis

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Map overview Semantic statistics

Panel switch

Nodes52
Edges51
Triples52
Avg. degree1.96
Density0.038462
Components1

How this topic connects Entity context

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Panel switch

Top relations

related to External links · 17
Panel switch → Archive Footage, Call, Communications, Evan Doorbell, IDF, MDF, MP3, Over, Panel, Panel Dial Office Photos, Panel Equipment, Power, Seattle Museum, Survey, Test Frames, Trips, Videos
related to Sender · 17
Panel switch → Additionally, By, District Brush, District Group, Final Brush, Final Tens, Final Units, Incoming Brush, Incoming Group, Office Brush, Office Group, Panel, Strowger, The, This, Thus, While
related to Motor power · 8
Panel switch → AC, DC, In, Motors, Strowger, The, Thus, With Panel
related to Signaling and control · 8
Panel switch → As, Each, In, Revertive Pulsing, RP, The, These, When
is a · 1
Panel switch → example of a power drive system

Important terminology Word statistics

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Important terminology

panel sender office system used line selector call telephone frame number called selectors digits final switching circuit central switch terminals

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Panel switchis aexample of a power drive system0.90text
Multi-frequency signaling.Panel was initially installed in cities where many stations still used manualinstance ofuntil later upgrades introduced newer signaling0.80text
Panel switchrelated to External linksCall0.60section
Panel switchrelated to External linksSeattle Museum0.60section
Panel switchrelated to External linksCommunications0.60section
Panel switchrelated to External linksArchive Footage0.60section
Panel switchrelated to External linksSurvey0.60section
Panel switchrelated to External linksTrips0.60section
Panel switchrelated to External linksEvan Doorbell0.60section
Panel switchrelated to External linksMP30.60section
Panel switchrelated to External linksPanel0.60section
Panel switchrelated to External linksPanel Dial Office Photos0.60section

Related concept clusters Concept neighborhoods

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    Min side: 3
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