Battery Backup - System Memory - NEC SL1000 Features And Specifications Manual

ISSUE 2.0
Description
The battery on the CPU retains the Clock/Calendar when the CPU 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 Nonvolatile Memory and can be
erased only by performing a First Initialization.
For additional storage time and the database can be copied to the Compact Flash card on the CPU.
Conditions
• The battery on the CPU 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 CPU battery every three years.
• During normal operation, the battery is continually recharged using a built-in charging circuit from
the CPU.
• Battery backup on the CPU does not protect the following:
- Callback
- Off-line Status (for programming system or station assignments)
- Repeat Redial
- Trunk Queuing/Camp-On
Default Settings
None
The battery must be installed on the CPU prior to programming a customer database.
System Availability
Terminals
Not applicable
Required Component(s)
None
Related Features
Battery Backup - System Power
Features and Specifications Manual

Battery Backup - System Memory

SL1000/SL1100
B
1-55