user data or a control element which supplies control data for example these control data may contain a provision message about a signalized rach channel to be used for a terminal which terminal has previously requested a signalized rach channel by means of a signaling sequence the switching block u201c sb u201d 26 following the control block 24 carries out the switching functions of for example channel coding interleaving channel multiplexing and when a cdma system is used also spreading the output signal of the block 26 is applied to an antenna 31 via a modulator u201c mod u201d 27 a digital analog converter u201c d a u201d 28 an intermediate frequency block u201c if u201d 29 and a high frequency block u201c hf u201d 30 all the elements 25 to 31 may be elements known from existing mobile radio systems a block circuit diagram of a receiver of a terminal is shown in fig5 this receiver includes as elements known from for example a gsm mobile radio system or a cdma system an antenna 32 a high frequency block u201c hf u201d 33 an intermediate frequency block u201c i f u201d 34 an analog digital converter u201c a d u201d 35 a demodulator u201c demod u201d 36 a switching block u201c sb u201d 37 having several functions and a channel access control block u201c cac u201d 38 which supplies control and user data to various sinks for example low frequency circuit for converting user data into speech data the block 37 is charged with.