Panel switch
id:
panel-switch-204-7854601
title:
Panel switch
text:
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
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Panel_switch
date created:
2005-09-14T16:47:04Z
date modified:
2024-09-10T00:28:14Z
main entity:
{"identifier":"Q17156811","url":"https://www.wikidata.org/entity/Q17156811"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/8/8d/Panel_Switch_District_Selector.jpg","width":4032,"height":3024}
fields total:
13
integrity:
15