Conditions• This PBX performs PING as follows:• Test packet length: 56 bytes• Ping attempts: 5• Time out length: 1 second• Ping interval time: 1 secondPC Programming Manual References2.6.18 Utility—Ping13.1.10 Power Failure RestartDescriptionWhen the electricity is turned back on, the PBX restarts, loads its stored data automatically, and logs the eventas 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 nomemory loss except the memories of Automatic Callback Busy (Camp-on) (® 1.1.4 Automatic CallbackBusy (Camp-on)) and Call Park (® 3.1.7 Call Park).13.1.11 Power Failure TransferDescriptionIf the power supply to the PBX fails, specific single line telephones (SLTs) are automatically connected tospecific CO lines (Power Failure Connections). The PBX will switch from the current connections to the PowerFailure 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 CO line calls can be made during a power failure. All other features do not work.• The analog CO line cards, extension cards, and the number of PFT ports (ports which can be used forPower Failure Connections) are as follows:CO Line Card: LCOT4 (1 PFT ports)Extension Card: DHLC4 (1 PFT ports)NoteThrough system programming, it is possible to allow CO line calls that are established during a powerfailure to be maintained even when the power returns and the connection is switched back to the normalconfiguration from the Power Failure Connection. However, if no special programming is performed,the connection will be dropped when power returns.Document Version 2009-12 Feature Manual 21313.1.11 Power Failure Transfer
