Access Keys, Skip To Content.

Residential | Small Business | Enterprise | Wireless Español | Other Languages

Home | About Us | Find a Store | Contact Us Search

Milestones in AT&T Network History

History of AT&T
A Brief History
Milestones in AT&T History
Inventing the Telephone
History of the AT&T Network
History of AT&T and Television
AT&T History Links

(Photo of a test from the control room of the first 4ESS switch.)

AT&T emloyees run tests from the control room of the first 4ESS switch, Chicago, 1975.

Terms of Use
Privacy Policy
Contact Us

© 2008 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies.

Hosted by AT&T.