Abstract: A method for maintaining a group call in a mobile radio system, and a mobile station in a mobile radio system, wherein the geographical area covered by the system is divided into radio cells. Each radio cell includes a base station. A group call is established between the mobile stations belonging to a group call group and residing within the areas of the radio cells forming a limited group call area. In order that the mobile station, upon changing radio cells, is able to select the base station within the area of which the group call is in progress, the respective base stations send one or a plurality of group call maintenance messages to the mobile stations involved in the group call. The group call maintenance message contains information concerning the base stations located within the areas of the radio cells forming the group call area, and the group call group identity.

Abstract: A method for use in a radio system that includes a subscriber database containing data informing of facilities activated for the subscriber, exchanges, base stations and subscriber stations. In order to keep the subscriber stations informed of the facilities activated therefor, the facility data for a given subscriber station are read from the subscriber data base of the radio system and the data are sent as a facility data message through a base station via a radio path to the subscriber station, the subscriber station receives the message containing the facility data and presents these data to the subscriber.