The invention relates to an arrangement for remote controlling a mobile radio telephone (1) in a motor vehicle with a standard hands-free device (2), which is installed as an independent item of equipment in the vehicle, contains a microphone and a loudspeaker and which is connected to the radio telephone (1). According to the invention, the radio telephone (1) is connected via an independent central interface module (5) to an input unit (3) and to an output unit (4) of another electronic item of equipment installed in the vehicle. The interface module (5) communicates via standardized interfaces (6) with the radio telephone (1) and with the input unit (3) and with the output unit (4) and contains a communications management unit (7) for converting the data formats between the radio telephone (1) and the input unit (3) and the output unit (4).