NEC ELECTRA ELITE IPK II - Battery Backup; System Backup; Memory Backup

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3 - 30 System Specifications
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Document Revision 3 Electra Elite IPK II
5.7 Battery Backup
The Electra Elite IPK II system has battery backup functions for system
backup and for memory backup.
5.7.1 System Backup
During power failure, the system is backed up using a rechargeable
battery. This battery backup supports all of the system operations for
approximately 30 minutes.
5.7.2 Memory Backup
The CPUII( )-U( ) ETU battery retains the Clock/Calendar and Last
Number Redial (LNR) buffers for each station when the CPUII( )-U( )
ETU encounters a power loss. With a fully charged battery, the
settings are retained for about three years. The system programmed
memory (Customer Database) is stored in non-volatile Memory and
can be erased only by a First Initialization.
1209 1336 1477
697 123
770 456
852 789
941
, 0 #
Nominal High Group
Frequencies (Hz)
Nominal Low Group
Frequencies (Hz)