Class-4 telephone switch
id:
class-4-telephone-switch-318-11715215
title:
Class-4 telephone switch
text:
A class-4, or tandem, telephone switch is a U.S. telephone company central office telephone exchange used to interconnect local exchange carrier offices for long distance communications in the public switched telephone network. A class-4 switch does not connect directly to telephones; instead, it connects to other class-4 switches and to class-5 telephone switches. The telephones of service subscribers are wired to class-5 switches. When a call is placed to a telephone that is not on the same cl
brand slug:
wiki
category slug:
encyclopedia
description:
Type of U.S. central office telephone switch
original url:
https://en.wikipedia.org/wiki/Class-4_telephone_switch
date created:
date modified:
2024-04-24T00:18:13Z
main entity:
{"identifier":"Q5127906","url":"https://www.wikidata.org/entity/Q5127906"}
image:
fields total:
13
integrity:
14