Functions > Speed Dialling > Automatic Speed Dialling Pick-up

Automatic Speed Dialling Pick-up
If automatic speed dialling pickup is enabled, pressing a speed dialling key while the telephone is in the idle state automatically picks up a call (when using a headset) or switches the telephone to hands-free calling.
 
Proceed as follows:
Using COMfortel Set (page Settings/functions > User settings, check box Automatic off-hook for speed dialling)
Using the telephone (menu settings > user settings > speed dial.key)

COMfortel 1600 - Firmware V2.2 - COMfortel Set V3.16 - Advanced Information V10 02/2019