Power Failure Telephone
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Optional Equipment
DSX-40 Hardware Manual
Power Failure Telephone
Power Failure Cut-Through
When AC power fails, the system can automatically cut through to a Power Failure Telephone connection.
Analog stations 25 and 26 (extensions 324 and 325) are the permanent power failure extensions. When
power fails:
❥
Analog extension 324 (station 25) automatically cuts through to line 1.
❥
Analog extension 325 (station 26) automatically cuts through to line 2.
For more on connecting extensions, see
Connecting Extensions and Lines
(page 28).
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.
- Place a test call.
