2.4 Fault Recovery/Diagnostics312 Feature Guide2.4 Fault Recovery/Diagnostics2.4.1 Power Failure Transfer (KX-TDA30/KX-TDA100/KX-TDA200 only)DescriptionWhen the power supply to the PBX fails, specific SLTs and/or ISDN terminal devices areautomatically connected to specific trunks (Power Failure Connections). The PBX will switchfrom normal operation to the Power Failure Connections, and all existing conversations will bedisconnected.Only the trunks handled by Power Failure Connections can be used during a power failure.Conditions[General]• Only trunk calls can be made during a power failure. All other features do not work.• DC Power SourceIf the DC power is available from backup batteries, even if the AC power fails, the PBX willremain fully operational.[KX-TDA100/KX-TDA200]• The analogue trunk cards and extension cards and the number of ports which can be usedfor Power Failure Connections are as follows:Trunk Cards: LCOT16 (four ports), LCOT8 (two ports), and LCOT4 (two ports)Extension Cards: MSLC16 (four ports), SLC16 (four ports), DHLC8 (two ports) and SLC8(two ports).To each trunk card, connect only one extension card.NotePower Failure Connections between analogue trunk cards and extension cards should bedone as per system programming so that conversation is maintained when the power isrestored and the MPR is recovering.• The BRI8 (one port) and BRI4 (one port) cards can also be used for Power FailureConnections. For details about Power Failure Connections, refer to the Installation Manual.[KX-TDA30]• Ports 1 and 2 of the LCOT card installed in the least slot number and ports 1 and 2 of theSuper Hybrid ports can be used for Power Failure Connections.NoteThe Power Failure Connections between the LCOT card and Super Hybrid ports areautomatically kept so that the conversation is maintained when the power is restored andthe Main Board is recovering.
