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z A device can act as a server to synchronize the clock of other devices only after its clock has been
synchronized. If the clock of a server has a stratum level higher than or equal to that of a client’s
clock, the client will not synchronize its clock to the server’s.
z The synchronization process takes a period of time. Therefore, the clock status may be
unsynchronized after your configuration. In this case, you can click Refresh to view the clock
status and system time later on.