Panasonic KX-NS500AG Service Manual page 190

7.11 Utility—UM - System Maintenance
7.11 Utility—UM - System Maintenance
Programme settings for Unified Messaging (UM) system maintenance.
System Maintenance Mode
Specifies whether to enable or disable System Maintenance Mode.
System Maintenance Start Time
Specifies the System Maintenance start time.
After specifying the settings on this screen, click OK.
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