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Power Failure Connections - Panasonic KX-TDA100 Installation Manual

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2.13 Power Failure Connections

2.13.1 Power Failure Connections
When the power supply to the PBX fails, power failure transfer (PFT) will switch from the current connection
to the Power Failure Connection. Refer to "2.4.1 Power Failure Transfer" in the Feature Guide for further
information.
Note
While DC power is provided by the backup batteries, the PBX will remain fully operational and the
connection will not switch to the Power Failure Connection.
Using Analogue Trunk Card and Extension Card
Power Failure Connection connects a specific SLT and a trunk in the event of power failure. The following
analogue trunk and extension cards can be used for Power Failure Connections:
Analogue trunk cards: LCOT16 (4 PFT ports), LCOT8 (2 PFT ports), and LCOT4 (2 PFT ports)
Extension cards: MSLC16 (4 PFT ports), CSLC16 (4 PFT ports), SLC16 (4 PFT ports), DHLC8 (2 PFT
ports) and SLC8 (2 PFT ports)
To 1 analogue trunk card, connect only 1 extension card.
Note
By programming the PBX, a trunk conversation established during power failure can be maintained even
when the power returns and the connection is switched back to the normal configuration from the Power
Failure Connection. However, if no special programming is performed, the connection will be dropped when
power returns.
Trunk Card
(e.g., LCOT8)
Accessories and User-supplied Items
Accessories (included): none
User-supplied (not included): RJ11 connectors
RJ11 Connector Pin Assignments for Analogue Trunk Card
PFT Ports 1 and 2
RJ11
R2
R1
T1
T2
To trunk
T2
T1
R1
R2
Extension Card
(e.g., SLC8)
To SLT
2.13.1 Power Failure Connections
Installation Manual
245

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