Section 4: Optional Equipment4-32 Section 4: Optional Equipment Aspila EX HardwarePOWER FAILURE TELEPHONESPower Failure (Figure 4-36)The system allows connection for basic telephone service during a power failure. The power failureoperation occurs during a commercial power failure, and is not affected by PCB failure. Power FailureTransfer 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 CircuitsRJ61 Cable ConnectorRJ61 Cable Connector - CN13, SLT Interface for Power FailurePin No. Connection1 -2 -3 Circuit 2 - Tip4 Circuit 1 - Ring5 Circuit 1 - Tip6 Circuit 2 - Ring7 -8 -CÔNG TY VIỄN THÔNG VIỆT PROChuyên phân phối tổng đài NEChttp://vietpro.com.vn
