Number One Electronic Switching System
id:
number-one-electronic-switching-system-254-13587636
title:
Number One Electronic Switching System
text:
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 wire spring relays which in turn were controlled by a central processing unit (CPU). The 1AESS central office switch was a plug compatible, high
brand slug:
wiki
category slug:
encyclopedia
description:
Defunct telecommunications node in the United States; part of the Bell System
original url:
https://en.wikipedia.org/wiki/Number_One_Electronic_Switching_System
date created:
date modified:
2023-06-12T05:34:52Z
main entity:
{"identifier":"Q751464","url":"https://www.wikidata.org/entity/Q751464"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/7/7e/1A_Frames.JPG","width":1224,"height":1632}
fields total:
13
integrity:
15