→ Ext. No. / Floating Ext. No. (for SDN) (KX-TDA100/KX-TDA200/KX-TDA600 only)
→ Optional Parameter (Ringing Tone Type Number) (for Loop CO, Single CO, Group CO, ICD Group,
SDN)
Feature Manual References
3.1.19 COS (Class of Service)
9.1.2 ICD Group Features—Group Call Distribution
10.1.1 LED Indication
21.1 Capacity of System Resources
Operating Manual References
1.3.6 Call Hold
1.3.49 PDN (Primary Directory Number)/SDN (Secondary Directory Number) Extension (KX-TDA100/
KX-TDA200/KX-TDA600 only)
1.3.72 Walking COS
13.1.8 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) (® 1.1.4 Automatic Callback
Busy (Camp-on)) and Call Park (® 3.1.5 Call Park).
13.1.9 Power Failure Transfer
Description
If the power supply to the PBX fails, specific single line telephones (SLTs) are automatically connected to
specific CO line (Power Failure Connections). The PBX will switch from the current connections to the 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
[General]
•Only CO line calls can be made during a power failure. All other features do not work.

[KX-TDA600]

•The analog CO line cards, extension cards, and the number of PFT ports (ports which can be used for
Power Failure Connections) are as follows:
CO Line Cards: ELCOT16 (4 PFT ports)
218 Feature Manual Document Version 2008-11
13.1.9 Power Failure Transfer