Battery Backup; System Backup; Memory Backup - NEC Electra Elite IPK II System Hardware Manual

Document Revision 3
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5.7
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3 - 30
Nominal Low Group
Frequencies (Hz)

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.
Electra Elite IPK II
Nominal High Group
Frequencies (Hz)
1209 1336
697 1 2 3
770 4 5 6
852 7 8 9
941 0
#
System Specifications
1477