Linux time is the system time displayed on the Server Date/Time web page or displayed by executing the Linux date command. This time is the local time based on the Time Zone selected on the Server Date/Time web page. This is the time used by the system logs and CDR records.

Communication Manager time is the time used by Communication Manager features. If the multilocation feature is not used, this time should be the same as the Linux time. If the multilocation feature is used, the time will depend on the Communication Manager daylight saving rule assigned to a location. Features that used the Communication Manager time based on location include the time-of-day displayed by phones, time-of-day routing for AAR/ARS, and the time-of-day for scheduling Auto Wakeup calls.

Whenever a server’s time zone is changed, or whenever a server’s daylight saving time rules change, that server must be rebooted.