Using a headset
Not only can you use the "hands-free calling" function to make hands-free calls with your FRITZ!Fon, you can also do so with a headset. The telephone has a socket for 3.5 mm jack plugs on its side.
Commercially available 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 below. The mechanical protection of the plug should not exceed 7 mm to ensure good contact.
Fig.: Assignment of the 3.5 mm jack (stereo)
Fig.: Assignment of the 3.5 mm jack (mono)
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