TELECOM Digest OnLine - Sorted: Re: Non-Bell ESS?

Re: Non-Bell ESS?

Diamond Dave (
Wed, 13 Jul 2005 19:30:14 -0400

On 12 Jul 2005 12:11:16 -0700, wrote:

> I found it in the archives. Here it is:

> WASHlNGTON - East Coast and West Coast, the pattern has been the
> same: At about 11 a.m., an entire region's telephone system collapses.

> For the past six days, solving the mystery of the failing phones has
> become an obsession for the nation's service-conscious telephone
> companies. Yet despite recurring similarities and clues in the
> half-dozen failures to date, which have struck Washington, Los
> Angeles, Pittsburgh and San Francisco. the detective work remains
> mired in unanswered questions.

This was the subsequent problem on the AT&T network that affected only
some 4ESS tandems in June 1991.

Here's an article you can read about all the "known" crashes in the
early 1990s, including the one mentioned above:

Dave Perrussel
Webmaster - Telephone World

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