Panasonic KX-T336 System Reference Manual page 1249

60.00 Polarity Reversal Detection (PRD)
Description
When an R-LCOT card (KX-T96183) is installed, reversal of CO line polarity
is monitored at each port by default.
The PRD command is used to deactivate this monitoring function, or to
activate this monitoring function when it has been deactivated.
This command is not valid when an R-LCOT card (KX-T96183) is not
installed in the system.
Input Format
Mode
P R D
Index Number
Index Number
Four-digit number (1011 to 3158)
Input Value for Item Number
Assigning Items
Polarity Reversal Detection
Programming
To enter the Dumb Programming mode
1. Press CTRL key and V key simultaneously when Main Menu screen
is displayed at VT programming mode.
2. At the Dumb programming initial prompt (; > ), type:
( ↵ )
; > PRG
The screen displays the programming prompt (PRG>) as follows:
; PRG>
Index Number CR
(Y or N)
Y: Detects reversal of CO line polarity.
N: Does not detect reversal of CO line polarity.
(Default=Y)
10-C-100
(30393)
Explanation
Physical number of the CO line port
Input Value