Sterling gave the reader the fact surrounding the AT&T long distance telephone switching system crash on January 15, 1990. Roughly 60,000 customers lost service for approximately nine hours and 70 million calls went uncompleted! What happen to the contingency plan? The crashes in the early 90's occurred with no physical reasoning. There was no apparent damage, but the problem spread and spread. There was station after station across the United States that collapsed like dominoes, until half of AT&T network went amuck and the other half was put to the test. The AT&T software engineers knew what caused the cr
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