Fault Recovery/Diagnostics; Power Failure Transfer; Power Failure Restart - Panasonic KX-TAW848 Features Manual

2.4 Fault Recovery/Diagnostics

2.4 Fault Recovery/Diagnostics
2.4.1

Power Failure Transfer

Description
If the power supply to the PBX fails, specific single line telephones (SLTs) are automatically
connected to specific CO lines (Power Failure Connections). The PBX will switch from the
current connections to Power Failure Connections, and all existing conversations will be
disconnected.
Only CO line conversations handled by Power Failure Connections can be made during a
power failure.
Conditions
• Only ports 1 and 2 of the preinstalled LCOT4 card and ports 1 and 2 of the preinstalled
hybrid ports can be used for Power Failure Connections.
Note
When power is restored to the PBX and the Main Board is recovering, Power Failure
Connections remain established so that any existing conversations can be maintained.
• Only CO line conversations are possible during a power failure. All other features will not
work.
Installation Manual References
Installation Manual
2.10.1 Power Failure Connections
2.4.2

Power Failure Restart

Description
When the electricity is turned back on, the PBX restarts, loads its stored data automatically,
and logs the event as a System Restart in the error log.
Conditions
• In the event of a power failure, PBX memory is protected by a factory-installed lithium
battery. There is no memory loss except the memories of Automatic Callback Busy
(Camp-on) (
Park).
196 Feature Guide
1.7.1 Automatic Callback Busy (Camp-on)) and Call Park ( 1.12.2 Call