3. You can now increase the microphone volume with PLUS or decrease
the volume with MINUS.
4. To confirm, after approx. 15 seconds a low signal tone sounds in the
background. The settings are then automatically saved.
Phone setup with system software 9.xx and higher:
Settings are no longer required for using the headset on the phone. After
correctly adapting the phone plug, a headset symbol should now appear
in the "phone display". Should the headset symbol not appear, please
check the following settings:
Menu > Settings > Phone > Phone plug > Activate/select headset.
Phone setup with system software below 9.xx:
Important: The "Force Headset" function must not be activated on the
phone, as otherwise it will not be possible to accept external calls.
Menu > Settings > Phone > Phone plug > Force headset OFF
Menu> Settings> Phone> Socket > Activate headset
Dial tone signal / phone setup:
Important: The dial tone signal in the headset is only transmitted if one
of the following call tones has been selected on your phone Standard /