Abstract: An uplink group call channel is assigned to a second user who acts as the new speaker in order to switch the speaker function from a first user to the second user in an on-going group call within a mobile radio system. The mobile radio system has at least one main mobile exchange and at least one secondary mobile exchange, to each of which at least one base station system is connected. Once the uplink group call channel has been assigned, transmission of data, especially group application data, is initiated via a group call control message to at least one listening user of the group call, particularly the first user. The group call control message is generated by the second user and is transmitted to the main mobile exchange via the uplink group call channel.

Abstract: An uplink group call channel is assigned to a second user who acts as the new speaker in order to switch the speaker function from a first user to the second user in an on-going group call within a mobile radio system. The mobile radio system has at least one main mobile exchange and at least one secondary mobile exchange, to each of which at least one base station system is connected. Once the uplink group call channel has been assigned, transmission of data, especially group application data, is initiated via a group call control message to at least one listening user of the group call, particularly the first user. The group call control message is generated by the second user and is transmitted to the main mobile exchange via the uplink group call channel.

Abstract: The invention relates to a gas-insulated bus bar component comprising a grounded housing that is filled with protective gas and at least one bus bar conductor, which extends in the longitudinal direction of the housing and is supported on said housing by means of insulating bus bar supports. According to the invention, each bus bar conductor is connected to a disconnecting switch that is insulated by protective gas. The aim of the invention is to provide a component of this type, which can be simply connected to and disconnected from an air-insulated conductor, even when operational. To achieve this, the disconnecting switch is located in an outdoor bushing that is fixed to the housing.

Abstract: The invention relates to a gas-insulated bus bar component comprising a grounded housing that is filled with protective gas and at least one bus bar conductor, which extends in the longitudinal direction of the housing and is supported on said housing by means of insulating bus bar supports. According to the invention, each bus bar conductor is connected to a disconnecting switch that is insulated by protective gas. The aim of the invention is to provide a component of this type, which can be simply connected to and disconnected from an air-insulated conductor, even when operational. To achieve this, the disconnecting switch is located in an outdoor bushing that is fixed to the housing.