NEC SL1000 - InMail - Listening to Messages; Listen via Voice Mail Key; Listen via Voice Guidance

2.1.4 IP4WW-Battery Box
Connected to each KSU power supply, the external backup
battery provides DC power in case a loss of AC power
occurs. An optional (locally procured), external battery
source can be used to provide power during a power failure.
• Connect this box to the power supply at each KSU.
• Wall/floor-mountable
• One KSU can be mounted on the Battery box.
• Backup duration is approximately one hour.
2.2 Trunk/Extension/ISDN Expansion Interface Cards
2.2.1 IP4WW-408E-A1
This 408E card is installed in the 1632M KSU or 1632ME
EXP and provides a total of four analog trunk and eight
hybrid extension ports.
• Install this card to the expansion card slot at Main/
Expansion KSU
• Enables to connect the DSS console to hybrid Ext. port
No.8
• 1 power failure transfer circuit
2.2.2 IP4WW-008E-A1
This 008E card is installed in the 1632M KSU or 1632ME
EXP and provides a total of eight hybrid extension ports. The
ISDN BRI daughter board (2BRDB) can be mounted on this
board.
• Install this card to the expansion card slot at Main/
Expansion KSU
• Enables to connect the DSS console to hybrid extension
port No.8
• One ISDN BRI daughter board connection
ISSUE 3.0 SL1000
Hardware Manual 1-5