OfficeServ 7200-S
INSTALLATION
TECHNICAL MANUAL
PART 3 MAY 2010
3.7
A small battery is added to the MP20S card that is called the RTC (real-time clock). The
purpose of the battery is to maintain the time, date and day of week information in memory
during system powered off conditions. This insures that the time and date in the display
keyset is always up to date even after powering off or rebooting.
Figure 3.8 Real Time Clock Battery (RTC)
RTC Battery
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