The outage began Wednesday (28 August) afternoon after a problem with a major backbone router in the Chicago area, and lasted about two hours and 55 minutes, according to Sarah Eder, a spokeswoman for AT&T Broadband. By approximately 3:30pm Pacific time, the service had been restored.
The problem began by affecting customers on the former network of Tele-Communications on which AT&T provides services in Seattle, Salt Lake City, Denver, Chicago, Dallas, the San Francisco Bay Area and Portland, Oregon, Eder said. The problem later spread to some customers on the former MediaOne Group network.
AT&T Broadband has about 1.8 million customers nationwide, Eder said. She could not estimate how many customers were affected by the outage. AT&T Broadband provides Internet services primarily to consumers but does not provide cable Internet customers with an alternative method of accessing the Internet, Eder said. The outage affected only Internet services, she added. AT&T also provides television and telephone service via cable to some customers.