Panasonic KX-TD500 - Proprietary Telephones

2.9 Auxiliary Connection for Power Failure Transfer
2-70 Installation
Power Failure Transfer connects a specific Single Line and Proprietary telephones to selected
trunks in the event of system power failure.
Refer to“Power Failure Transfer” in the Features Guide for further information.
The Auxiliary Connection (see the illustration below) is required to implement this feature.
[Notes]
• The KX-TD500 System switches the current connection to the Auxiliary Connection automatically
when the power supply dies.
• While DC power is provided by the backup batteries when the AC power fails, the KX-TD500 System
does not switch the current connection to the Auxiliary Connection.
Insert the modular plugs of connection cords (6-conductor wiring) to the modular jacks of
Central Office Line cards (ELCOT) and Extension cards (DHLC, ESLC).
[Note]
• DLC card (Extension card) is not available for Power Failure Transfer.
Modular Jack 1
Modular Jack 2
Modular Jack 3
T3T2T1 R1R2R3
Tn : Tip
R
n : Ring
(Modular plug)
1) Connection
Central Office Line card
(ELCOT)
Extension card
(DHLC, ESLC)