... JOHN SMITH (55 5 )55 5-1234 JANE JONES (55 5 )55 5-4321 ALICE WALTER (55 5 )55 5-7890 800 -55 5 -55 55 pin 123 456 Backout Plan: None *** BOTTOM OF DATA *** Figure 17.1 Sample change-freeze, or network quiet ... misprogrammed server The SAs had done their best to debug the problem using their knowledge of their part of the system, yet the problem remained unsolved Suddenly, one of the senior SAs with ... changes they will make, the systems and services affected, the reasons for the change, the risks, the test procedure, the back-out plan, how long the change will take to implement, and how long the...