NEC ELECTRA ELITE IPK II, Features And Specifications Manual

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Electra Elite IPK II Document Revision 1
Battery Backup – System Memory 2 - 83
Battery Backup – System Memory
Description
A battery is provided on the CPUII( )-U( ) ETU for the Electra Elite IPK II system to retain System
Program Memory when power fails. When fully charged, the battery maintains backup power for
approximately seven years. System Data, Speed Dial Memories, and Clock/Calendar functions are
protected by the backup battery. After power is restored, the system returns to normal operation.
For additional storage time, the database and Caller ID History can be copied to the Compact Flash card on
the CPUII( )-U( ).
Conditions
The battery on the CPUII( )-U( ) 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 seven years.
During normal operation, the battery is continually recharged using a built-in charging
circuit from the CPUII( )-U( ) ETU.
Battery backup on the CPUII( )-U( ) ETU does not protect the following:
J Callback
J
Off-line Status (for programming system or station assignments)
J Repeat Redial
J
Trunk Queuing/Camp On
J Caller ID History
Default Settings
None
The battery must be installed on the CPUII( )-U( ) ETU prior to programming a customer’s database.