Panasonic KX-TDE600 Installation Manual page 220

3.12.1 Connection of Peripherals
An ON condition of circuit DR (DSR) indicates the printer or the PC is ready. Circuit DR (DSR) ON does
not indicate that communication has been established with the printer or the PC.
•
Request To Send (RTS):...(output)
This lead is held ON whenever DR (DSR) is ON.
•
Clear To Send (CTS):...(input)
An ON condition of circuit CS (CTS) indicates that the printer or the PC is ready to receive data from the
unit. The unit does not attempt to transfer data or receive data when circuit CS (CTS) is OFF.
•
Frame Ground (FG)
Connects to the unit frame and the earth ground conductor of the AC power cord.
220 Installation Manual