Battery Backup - System Memory - NEC Electra Elite IPK II System User Manual

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Electra Elite IPK II
Description
The battery on the CPUII( )-U10 ETU retains the Clock/Calendar and Last Number Redial (LNR) buffers
for each station when the CPUII( )-U10 ETU encounters a power loss. With a fully charged battery, the
settings are retained for approximately three years.
The system programmed memory (Customer Database) is stored in Non-Volatile Memory and can be
erased only by performing a First Initialization.
For additional storage time, the database and Caller ID History can be copied to the Compact Flash card on
the CPUII( )-U10 ETU.
Conditions
The battery on the CPUII( )-U10 ETU should be removed during long term storage but must
be installed (protection against loss of power) just before ETU installation to provide battery
backup for System Memory.
When fully charged, the battery retains System Memory for approximately three years.
You should replace the CPUII( )-U10 ETU battery every three years.
During normal operation, the battery is continually recharged using a built-in charging
circuit from the CPUII( )-U10 ETU.
To prevent losing Caller ID History, save the database before storing the CPUII( )-U10
ETU.
Battery backup on the CPUII( )-U10 ETU does not protect the following:
Callback
Off-line Status (for programming system or station assignments)
Repeat Redial
Trunk Queuing/Camp-On
Caller ID History
Default Settings
None
 The battery must be installed on the CPUII( )-U10 ETU prior to programming a customer database.
Battery Backup – System Memory
Battery Backup – System Memory
Document Revision 4C
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