OLE@csli.stanford.edu (Ole J. Jacobsen) (02/24/90)
The book "Introduction to Telephone Switching" by Bruce E. Briley of Bell Labs, published by Addison-Wesley, ISBN 0-201-11246-9 has (amongst other things) a very comprehensive overview of the various generations of switches from Step-by-Step and Panel via Crossbar and the whole family of ESSs (1-5). (It also contains an amusing "typo"; the photograph of a Crossbar Switch Bay on page 45 is flipped 90 degrees so the racks appear *horizontal*. Now here in Earthquake land this may not be so uncommon, but...) Ole