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