Power Failure Telephone
DSX-80/160 Hardware Manual
Optional Equipment
◆
63
Optional
Equipment
Power Failure Telephone
Power Failure Cut-Through
When AC power fails, the system can automatically cut through to a Power Failure Telephone connection.
Each COIU Card has two power failure cut-though connections.
To install Power Failure Cut-Through:
1.
Locate an available 8-pin jack in a line or station block.
- Local codes may prevent you from using a connector on a line block for optional equipment.
2.
For the 8-pin jack chosen, locate the
fi
rst two circuits in the block. If your jack is the
fi
rst jack in the
block, for example:
- The
fi
rst power failure circuit is the
WHT/BLU
-
BLU/WHT
pair.
- The second power failure circuit is the
WHT/ORN
-
ORN/WHT
pair.
3.
Install a modular jack for each Power Failure Telephone within 6 feet of the telephone’s location.
4.
For each Power Failure Telephone, run one-pair of 24 AWG station cable from the appropriate circuit on
the block to the telephone’s modular jack.
5.
Terminate the station cable leads to the
RED
and
GRN
lugs in the modular jack.
6.
Install bridging clips as required.
7.
Plug the 8-pin connector into the power failure jack on the COIU PCB.
To test the Power Failure Telephone:
1.
Connect the power failure telephone.
2.
Power down the system.
3.
At the Power Failure Telephone, lift the handset.
- You should hear dial tone on the line you connected.
4.
Place a test call.
Figure 48: Connecting a Power Failure Telephone
1093096 - 28
BLK
YEL
GRN
RED
To Power
Failure
Telephone
connector on
COIU PCB
Power Failure
Telephone 1
Station
Block
8-Pin
Connector
BLU-WHT
WHT-BLU
625
Modular
Jack
BLK
YEL
GRN
RED
Power Failure
Telephone 2
BLU-WHT
WHT-BLU
625
Modular
Jack
25 Pair
Installation Cable
