Crossbar Switches Crossbar switches are an important general architecture for fast switches. 2 x 2 Crossbar Switches A general N x N crossbar switch. - ppt download
Telephone crossbar switch, Swedish Ericsson, 1921 | Science Museum Group Collection
Crossbar switching – IP Files
Crossbar Switch - an overview | ScienceDirect Topics
The Communications Museum Trust - eMuseum - Telephone Switching - How calls get from A to B Part 7