NEC UNIVERGE SV8100 System Hardware Manual page 120

Issue No. 1.5
6.7
3 - 24
6.6.5 External Paging (Audio)
Output Power: –10 dBm Signal Level
Output Impedance: 600
Relay Contact Rating: 500 mA, 24 Vdc
6.6.6 External Tone Ringer/Night Chime Output
Output Level: –10 dBm
Output Impedance: 600
Relay Contact Rating: 500 mA, 24 Vdc
6.6.7 SMDR Output
Female Connector (LAN) Standard DB-9 (straight)
6.6.8 PC Connection
Female Connector (LAN) Standard DB-9 (straight)
6.6.9 Relay Contact
All Relay Contact Ratings: 100 mA, 48Vdc
Battery Backup
The SV8300 system has battery backup functions for system backup and for
memory backup.
6.7.1 System Backup (Optional)
During a power failure, the system is backed up using a rechargeable
battery. This battery backup supports all system operations for
approximately 30 minutes.
6.7.2 Memory Backup
The CPU Blade battery retains the Clock/Calender and Last Number
redial (LNR) buffers for each station when the CPU Blade 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. After power is restored, the system Blade returns
to normal operation.
UNIVERGE SV8100/SV8300
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SV8300 System Specifications