Power Failure Telephones; Power Failure (Figure 4-54); Connector Pin-Outs On Coiu Pcb For Power Failure Circuits - NEC Aspire S Manual

POWER FAILURE TELEPHONES

Power Failure (Figure 4-54)

The system allows connection for basic telephone service during a power failure. The power failure opera-
tion occurs during a commercial power failure, and is not affected by PCB failure. Power Failure Transfer is
provided by connecting to the COIU PCB.
The 4COIU-S PCB provides 1 Power Failure Transfer circuit.
The CN5 connector provides connection to 4 analog trunk ports, which are polarity sensitive (tip to tip, ring
to ring). The power failure circuits, however, are not polarity sensitive. A maximum of 2 4COIU-S PCBs
per system is allowed.

Connector Pin-Outs on COIU PCB for Power Failure Circuits

Aspire S Hardware Manual
Section 4: Telephones and Optional Equipment
The CN5 and CN7 connectors are polarity sensitive (tip to tip, ring to ring).
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Section 4: Telephones and Optional Equipment ◆ 4-53
RJ61 Cable Connector - CN5
Pin No.
1
2
3
4
5
6
7
8
Connection
-
SLT Interface
Power Failure Circuit - Tip
Circuit 2 - Tip
Circuit 1 - Ring
Circuit 1 - Tip
Circuit 2 - Ring
SLT Interface
Power Failure Circuit - Ring
-
4