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Number One Electronic Switching System

The Number One Electronic Switching System (1ESS) was the first large-scale stored program control (SPC) telephone exchange or electronic switching system in the Bell System. It was manufactured by Western Electric and first placed into service in Succasunna, New Jersey, in May 1965. The switching fabric was composed of a reed relay matrix controlled by…

1ESS computer, Switching fabric & 1AESS

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Overview

Switching fabric

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1ESS computer

1AESS

Other electronic switching systems

Advanced semantic analysis

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Map overview Semantic statistics

Number One Electronic Switching System

Nodes78
Edges77
Triples10
Avg. degree1.97
Density0.025641
Components1

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Number One Electronic Switching System

Top relations

related to Other electronic switching systems · 8
Number One Electronic Switching System → Data Features, Electronic Switching System Arranged, ESS ADF, It, No, Number One Electronic Switching, System, The No

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Important terminology

trunk junctor could switch line links switches one 1aess switching system fabric 1ess grids would control used memory four call

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
the timinginstance ofto handle simple but time-consuming tasks0.80text
counting of Dial Pulsesinstance ofto handle simple but time-consuming tasks0.80text
Number One Electronic Switching Systemrelated to Other electronic switching systemsThe No0.60section
Number One Electronic Switching Systemrelated to Other electronic switching systemsElectronic Switching System Arranged0.60section
Number One Electronic Switching Systemrelated to Other electronic switching systemsData Features0.60section
Number One Electronic Switching Systemrelated to Other electronic switching systemsNo0.60section
Number One Electronic Switching Systemrelated to Other electronic switching systemsESS ADF0.60section
Number One Electronic Switching Systemrelated to Other electronic switching systemsNumber One Electronic Switching0.60section
Number One Electronic Switching Systemrelated to Other electronic switching systemsSystem0.60section
Number One Electronic Switching Systemrelated to Other electronic switching systemsIt0.60section

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