Battery Backup - System Memory - NEC Xen IPK Features & Specifications Manual

Battery Backup -
System Memory
FEATURE
DESCRIPTION
SYSTEM
AVAILABILITY
OPERATING
PROCEDURES
SERVICE
CONDITIONS
Features and Specifications Manual
A battery is provided on the CPUI( )-U( ) ETU, to retain System Program
Memory if power fails. When fully charged, the battery maintains backup
power for approximately 21 days. System Data, Speed Dial Memories, and
Clock/Calendar are among the functions protected by the backup battery.
When power is restored, the system returns to normal operation.
Terminal Type
Not applicable.
Required Components
None.
Not applicable:
Restrictions
Battery backup on the CPUI( )-U( ) ETU Unit does not protect
the following:
1. Automatic Callback
2. Off-line Status (for programming system or station assignments)
3. Automatic Redial
4. Trunk Queuing
General
The battery connector on the CPUI( )-U( ) ETU Unit should be
disconnected during long term storage but must be connected
(protection against loss of power) at the time of installation to provide
battery backup for System Memory.
When fully charged, the battery retains System Memory for
approximately 21 days.
B-4
B4 – 121