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Knowledge document #239
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Using a headset with FRITZ!Fon

Pin 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 right side.

Standard headsets for mobile telephones with an earphone impedance of 32 Ohms and a microphone impedance in the range of 800-2200 ohms (+/- tolerance) are suitable. You can use stereo or mono headsets with the assignment shown on the right, although playback is always in mono. The mechanical protection of the plug should not exceed 7 mm to ensure good contact.

The headset is ready for use as soon as you have calibrated it with the wizard via "Menu > Settings > Audio > Setup headset > OK".

To our knowledge, iPhone headsets do not work with a FRITZ!Fon.