Using a headset with FRITZ!FonPin assignment 3.5 mm jack plug (stereo) Pin assignment 3.5 mm jack plug (mono) With your FRITZ!Fon, you can not only make hands-free calls using the "hands-free calling" function, you can also use a headset. The telephone has a socket for 3.5 mm jack plugs on its side. If the headset is plugged in or unplugged during a call, the call may be disconnected. With wired...
> https://en.avm.de/service/knowledge-base/dok/FRITZ-Fon-X6/239_Using-a-headset-with-FRITZ-Fon/
FRITZ!Fon does not turn onThe FRITZ!Fon does not turn on anymore. When you try to turn the telephone on, the message key and end call key light up red, but the display remains black and the telephone does not work.Simply proceed as described below. After each measure, check whether the problem is solved.1 Charging the rechargeable battery Plug in the charging station. Make sure that both plugs on...
> https://en.avm.de/service/knowledge-base/dok/FRITZ-Fon-X6/3325_FRITZ-Fon-does-not-turn-on/
Display is defectiveThe display of the FRITZ!Fon is defective: The display remains dark, white, or scrolls constantly. It is inverted or mirrored, top and bottom or right and left are reversed. It has annoying lines on it or it has an entire line of defective pixels.Simply proceed as described below. After each measure, check whether the problem is solved.1 Restarting the FRITZ!Box Unplug the...
> https://en.avm.de/service/knowledge-base/dok/FRITZ-Fon-X6/322_Display-is-defective/