Pictures from
the Museum of Communications
Pictures taken at the Museum of
Communications in Seattle, Washington in May 2005.
AT&T
Crash of 1990
An excerpt from a magazine with details of the "crash" of the AT&T
long distance network in 1990.
Morris, IL Electronic Switch Experiment
A technical history for the first "electronic" switching system
field trial experiment in Morris, IL from 1958 to 1962.
North Pittsburgh Telephone Company
Unofficial History
An unofficial technological history of the North Pittsburgh
Telephone Company in Gibsonia, PA (suburban Pittsburgh) to
the present.
Old Bell System Operator Routing Codes
A historical listing of old routing codes that Bell System (AT&T
Long Lines) operators used to use that performed special functions
within the toll network.
Old Number 4 Crossbar Toll Tandem List
An extensive historical listing of Bell System Number 4 Crossbar
(#4XB) toll tandem systems from the 1940s to the 1980s.
Other Telephone System Technical History
Technological history on various telephone company systems from the
webmaster's personal perspective over the last 30 years.
History of AT&T
A technical history of AT&T, including videos of the development of
the vacuum tube, first transcontinental telephone call, expansion of
the toll network in the early days, the first coaxial cable, and
microwave relay systems.
History of 911
A technical history into the 911 emergency system used in most of
the United States and Canada.
Telecomwriting.Com's Telephone History Series
Tom Farley at Telecomwriting.com has made an EXTENSIVE telephone
history section that covers the history of the telephone from a
United States point of view from 1830 through 1984.
Telecomwriting.Com's Radio Telephone /
Cellular Telephone History
An extensive history on the history of cellular and early forms of
mobile radio-based telephone systems.
