2.9 Power Failure Connections
2.9.1 Power Failure Connections
| When the power supply to the PBX fails, power failure transfer will switch from the current connection to the Power Failure Connections. |
| Power Failure Connections connect a specific extension and an outside (CO) line in the event of power failure as follows: |
| Outside (CO) line 1—extension (T, R) jack 01 |
| Outside (CO) line 4—extension (T, R) jack 09 |
| Outside (CO) line 7—extension (T, R) jack 17 |
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Notes
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In the event of a power failure, system memory is protected by a factory-provided lithium battery. No system data will be lost, except for the Camp-on, Saved Number Redial, Last Number Redial, and Call Park data. |
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The current connection automatically switches to the Power Failure Connection when the power supply stops. |
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Proprietary telephones (PTs) cannot be used during a power failure. Therefore, we recommend connecting single line telephones (SLTs) in parallel with PTs to extension jacks 01, 09, and 17. |
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As long as DC power is provided by the backup batteries, the PBX will remain fully operational and the connection will not switch to the Power Failure Connections. |