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Battery Backup - System Memory
Description
The battery on the CPU retains the Clock/Calendar and Last Number Redial (LNR) buffers for each
station 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 (protec-
tion 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
Guide to Feature Programming
Program
Number
Program Name
Default
90-03-01
Save Data
not assigned
ISSUE 1.0
SL1000
B
Battery Backup - System Memory
1-48
Содержание SL1000
Страница 1: ...Features and Specifications Manual A50 031169 001 ISSUE 1 0 January 2011 ...
Страница 41: ...Operation None ISSUE 1 0 SL1000 A Features and Specifications Manual 1 33 ...
Страница 57: ...Operation None ISSUE 1 0 SL1000 B Features and Specifications Manual 1 49 ...
Страница 95: ...Operation None ISSUE 1 0 SL1000 C Features and Specifications Manual 1 87 ...
Страница 154: ...Operation None ISSUE 1 0 SL1000 D Data Line Security 1 146 ...
Страница 279: ...Figure 1 20 Cascade Message Notification Flow Chart 1 ISSUE 1 0 SL1000 I Features and Specifications Manual 1 271 ...
Страница 280: ...Figure 1 21 Cascade Message Notification Flow Chart 2 ISSUE 1 0 SL1000 I InMail Cascade Message Notification 1 272 ...
Страница 324: ...Operation LCR Operation Flow Diagram ISSUE 1 0 SL1000 L LCR Least Cost Routing 1 316 ...
Страница 325: ...LCR Dial LCR Dial Editing ISSUE 1 0 SL1000 L Features and Specifications Manual 1 317 ...
Страница 326: ...LCR Cost Centre Code ISSUE 1 0 SL1000 L LCR Least Cost Routing 1 318 ...
Страница 586: ...Memo ISSUE 1 0 SL1000 Features Availability by Software Revision 3 6 ...
Страница 587: ...Memo ISSUE 1 0 SL1000 Features and Specifications Manual 3 7 ...
Страница 588: ...Features and Specifications Manual NEC Corporation ISSUE 1 0 ...