Panasonic KX-TDA100 Features Manual page 173

Flexible CO (Trunk)
Flexible DSS (Direct Station
Selection)
PF (Programmable Feature)
Conditions
• Certain buttons are equipped with a light to show line or feature status.
Button
Used to make or receive a trunk call or can be reassigned to
a different trunk or to another feature button.
Used to access an extension with one-touch. Every button
is programmed to correspond to an extension. DSS buttons
can also be reassigned to other features.
Used to access a preprogrammed feature with one-touch.
(no default)
1.19 Proprietary Telephone (PT) Features
Usage
Feature Guide 173