Telephone Switching Systems of North America – Main Page
Jan 18, 2021 · An overview, background and history on the different types of electronic (analog) and digital telephone switching systems that are used on the North American telephone network. Automatic Electric Modern Switching Systems. Details on Automatic Electric electronic & digital switching systems.
Overview & Background on Electronic & Digital Switching Systems
Jan 17, 2021 · An overview and historical background on the different types of electronic (analog) and digital telephone switching systems that are used on the North American telephone network.
Step-by-Step Telephone Switching Systems
Jan 18, 2021 · Information on the first automated switching system – the Step-by-Step (Strowger) telephone switching systems and its variants. Overview & History on Step by Step Switching Systems. The Step by Step switching system was invented in 1888 and patented in 1891 by Almon Strowger, an undertaker in Kansas City, MO USA.
Western Electric/Lucent Modern Telephone Switching Systems
Jun 19, 2023 · Information and pictures on modern Western Electric (later Lucent Technologies, Alcatel-Lucent, and now Nokia) electronic and digital central office switching systems.
Telephone Switch Timeline
Sep 14, 2022 · A timeline of the development & history of telephone switching systems (and other things such as corporate mergers) from the past to the present.
Packet Softswitches – The Next Generation - Telephone World
Mar 25, 2021 · Overview & Discussion on Softswitches (carrier grade packet switching), the next generation of telephone switching systems in the Public Switched Telephone Network.
Automatic Electric Modern Switching Systems - Telephone World
Jan 18, 2021 · Information and pictures on modern Automatic Electric / AGES electronic and digital central office switching systems.
Northern Telecom/Nortel Digital Central Office Switches
May 31, 2021 · Information and pictures on modern Nortel (Northern Telecom / Northern Electric) electronic and digital central office switching systems. Northern Telecom (formerly Northern Electric, later Nortel) originally licensed telephone switch …
Western Electric Panel Telephone Switching Systems
Jan 18, 2021 · The Panel switch was the first telephone switch to use a concept of “store and forward” by use of a device called a “sender” which can store a number and then act upon the dialed number to route the call the best way possible.
Western Electric Crossbar Telephone Switching Systems
Jan 18, 2021 · Information on the Western Electric series of crossbar telephone switching systems. Overview. Crossbar telephone switching systems were developed by LM Ericsson of Sweden in the 1930s. Ericsson switches were very popular in …