Panasonic KX-TD500 System Reference Manual page 1367

--Operation Chart--
PITS station program-
ming mode
<STATUS 1>
PITS PGM No?
Dial "0 5"
• The current data
disappears on the display.
• The MEMORY button
indicator light goes out.
Press the MEMORY
button
PITS PGM No?
• The MEMORY button
indicator lights red.
To select "handset" :
Handset
Dial "1"
To select "headset" :
Headset
Dial "2"
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