On Sun, 09 Dec 2007 09:47:10 -0500, BAR wrote:


Do any of you remember the nation wide telephone problem that occured on
e day in '89? I don't know the specifics of the problem but a bug in SS7
caused all of the major switches across the country on AT&T's network
started shutting down and would not restart. Took a software change to
fix the problem. I believe that the outage lasted about 10 or 12 hours.

I mentioned it earlier in the thread.

The site outage took 12 hours - the results in resetting the system
took 28 hours in total to get everything back on line.

Another cascade failure. $5 relay part and havoc ruled the day.