Section 4: Optional Equipment
4-32 Section 4: Optional Equipment Aspila EX Hardware
POWER FAILURE TELEPHONES
Power Failure (Figure 4-36)
The system allows connection for basic telephone service during a power failure. The power failure
operation occurs during a commercial power failure, and is not affected by PCB failure. Power Failure
Transfer is provided by connecting PSTN lines to either the COIU-LS1 or COIU-LG1 PCB.
The 4COIU-LS1 or 4COIU-LG PCB provides 1 Power Failure Transfer circuit or using the 8COIU-
LS1 or 8COIU-LG1 PCB, 2 circuits are provided.
The CN3 and CN5 connectors each provide connection to 4 analogue trunk ports. A maximum of 16 4/
8COIU-LS1 PCBs per system is allowed.
! Important !
• When connecting the RJ61 cables to the COIU PCB, note the position of the Power Failure con-
nector. Do not confuse this connector as the trunk connector.
Connector Pin-Outs on COIU PCB for Power Failure Circuits
RJ61 Cable Connector
RJ61 Cable Connector - CN13, SLT Interface for Power Failure
Pin No. Connection
1-
2-
3 Circuit 2 - Tip
4 Circuit 1 - Ring
5 Circuit 1 - Tip
6 Circuit 2 - Ring
7-
8-
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