System Basics Introduction
Page 218 7210 SAS M, T, X, R6 Basic System Configuration Guide
OK Failed A A
OK OK A A
Failed Failed holdover holdover
OK Failed A A
Failed Failed holdover holdover
Failed OK B B
Failed Failed holdover holdover
OK OK A or B A
Table 19: Revertive, non-Revertive Timing Reference Switching Operation
Status of
Reference A
Status of
Reference B
Active Reference
Non-revertive Case
Active Reference
Revertive Case