The Change Daily System Maintenance Time option provides the screen facsimile below which contains a submenu of options.

PARTNER Messaging is factory set to restart itself each day at 3:00 am. This Scheduled System Restart is designed to allow PARTNER Messaging to perform system and diagnostic checks to ensure system and data integrity. The Scheduled System Restart eliminates the need for you to manually perform several diagnostic audits and ensures that PARTNER Messaging diagnostics are performed on a regular basis.
PARTNER Messaging keeps a time record of the last Scheduled or Manual System Restart. If the last system restart occurred within the last 23 hours, PARTNER Messaging cancels Scheduled System Restart.
A Scheduled System Restart is initiated only if PARTNER Messaging is idle, i.e., all of the voice messaging ports are "on-hook." If any voice messaging ports are busy, the system cancels the Scheduled System Restart then checks for an idle status every ten minutes for a one-hour period. If PARTNER Messaging is not idle at the start of the ten-minute interval during this one-hour period, the Scheduled System Restart is canceled until the next day at the scheduled time.
While a system restart is in progress, all voice messaging ports are busied-out and all event data is written to the Event Log before PARTNER Messaging shuts down. When the system restart is complete, PARTNER Messaging refreshes the Message Waiting Lights and logs the voice messaging ports into the PARTNER Messaging Hunt Group so that PARTNER Messaging can respond to calls.
Changing the Daily System Maintenance Time
Click below for other options from the Service Technician Options Menu:
System Configuration Options
Mailbox Report
Critical Event Report
Restart Messaging System
Display Permanent Trouble Log
Enter Notes in Permanent Trouble Log
Log Off and Exit