Abstract: The invention relates to a cam segment with an assembly device for the assembly of cam sections. To facilitate the production and assembly, the assembly device comprises a receiving plate or at least one spacing disc fitted on a receiving plate, such that in the assembly surfaces of the cam sections and of the receiving plate and/or of the spacing disc, which are made by stamping and/or punching and/or fine blanking, recesses are formed in such a manner and/or locating pins protruding into said recesses are formed such that the position of the cam sections on the cam segment are clearly established by the locating pins and recesses.

Abstract: A voice-controlled hands-free facility contains a microphone, an internal and an external loudspeaker, and two series combinations of an input amplifier (EV), a variable attenuator (DR), and an output amplifier (AV), one for the send path and one for the receive path, and is controlled by a voice control unit (SS) connected to the output (E) of the input amplifier (EV), to the output (D) of the variable attenuator (DR), and, by a line (L), to an input of the variable attenuator (DR).To permit the hands-free facility to be switched from a single-part mode of operation to a two-part mode, the output (E) of the input amplifier (EV) in the send path and/or the receive path is connected to the output (A) of the output amplifiers (AV) through a bypass device (BP) and a switching unit (T).