Panasonic KX-NS500 - PFT in KX-NS520 (Installed by Default)

4.3.8 PFT in KX-NS520 (installed by default)
Function
When the power supply to the Expansion Unit fails, power failure transfer (PFT) will switch from the current
connection
to the Power Failure Connection. Refer to "5.6.2 Power Failure Transfer" in the Feature Guide for
further information.
The detail information about this card, refer to "4.12 Power Failure Connections".
Pin Assignments
For PFT port
No. Signal Name Function
81
1 TA Tip port 1
2 RA Ring port 1
3 Reserved –
4 Reserved –
5 Reserved –
6 Reserved –
7 TB Tip port 2
8 RB Ring port 2
134 Installation Manual
4.3.8 PFT in KX-NS520 (installed by default)