Radio system.

(57) Summary book invention relates to a wireless system equipped with the fixed-wireless-access network which has a base station (BS) and a mobile radio station (MS). Each move station monitors continuously the message transmitted by the base station by a control channel, in order to be able to perform a call setup instancy in the state where the call is not sent out. According to the present invention, the user can choose normal operation mode and another operational mode about a move station (MS). In normal operation mode, the message of a control channel is supervised continuously. In another operational mode, the move station can stop the surveillance of a control channel in a suitable instant between the unattended time known by the radio network. In a radio network, the inside of the unattended time does not carry out the trial which sends a message to the move station.