Abstract: In order to facilitate group communication using characteristics of a prearranged group but not involving all members of the pre-arranged group, a parameter indicating that the group communication is not intended to all members of the pre-arranged group is added by an inviting group member sending a request to a group server, and the group server, in response to the parameter, is configured to not to invite all members to the group communication.

Abstract: In order to facilitate group communication using characteristics of a prearranged group but not involving all members of the pre-arranged group, a parameter indicating that the group communication is not intended to all members of the pre-arranged group is added by an inviting group member sending a request to a group server, and the group server, in response to the parameter, is configured to not to invite all members to the group communication.

Abstract: In order to facilitate group communication using characteristics of a prearranged group but not involving all members of the pre-arranged group, a parameter indicating that the group communication is not intended to all members of the pre-arranged group is added by an inviting group member sending a request to a group server, and the group server, in response to the parameter, is configured to not to invite all members to the group communication.

Abstract: In order to facilitate group communication using characteristics of a pre-arranged group but not involving all members of the pre-arranged group, a parameter indicating that the group communication is not intended to all members of the pre-arranged group is added by an inviting group member sending a request to a group server, and the group server, in response to the parameter, is configured to not to invite all members to the group communication.

Abstract: In order to facilitate group communication using characteristics of a pre-arranged group but not involving all members of the pre-arranged group, a parameter indicating that the group communication is not intended to all members of the pre-arranged group is added by an inviting group member sending a request to a group server, and the group server, in response to the parameter, is configured to not to invite all members to the group communication.

Abstract: In order to facilitate group communication using characteristics of a pre-arranged group but not involving all members of the pre-arranged group, a parameter indicating that the group communication is not intended to all members of the pre-arranged group is added by an inviting group member sending a request to a group server, and the group server, in response to the parameter, is configured to not to invite all members to the group communication.

Abstract: A user terminal requesting a session establishment although the session already exists, is informed on the existing session in a response to the request. If the user terminal offered in the request one or more media types that were rejected, the response contains an indication of a reason for rejection.

Abstract: A communication system including a first and second user equipment in communication over a shared floor and a server means for managing the shared floor. According to the system, the server means is arranged to detect an anonymity request from the first user equipment and, responsive to the anonymity request, to prevent the second user equipment from identifying the first user equipment from user plane messages transmitted from the first user equipment to the second user equipment.

Abstract: A method enables obtaining parameters relating to a service provided in a communication system. The method comprises storing a first set of parameters relating to a service, the first set of parameters being valid when the service is controlled by a first network. The method further comprises determining whether a second set of parameters is needed, the second set of parameters relating to said service and being valid when said service is controlled by a second network. The method further comprises obtaining the second set of parameters, when needed. A communication device is configured to execute the method.

Abstract: A user terminal requesting a session establishment although the session already exists, is informed on the existing session in a response to the request. If the user terminal offered in the request one or more media types that were rejected, the response contains an indication of a reason for rejection.

Abstract: In order to facilitate group communication using characteristics of a pre-arranged group but not involving all members of the pre-arranged group, a parameter indicating that the group communication is not intended to all members of the pre-arranged group is added by an inviting group member sending a request to a group server, and the group server, in response to the parameter, is configured to not to invite all members to the group communication.

Abstract: A method of group communication in a system where clients need to request floor access from a controlling network element includes a controlling network element that determines a floor access control situation where number of floor access requests should be limited and sends a session-specific indication on the floor access control situation to the client. The indication includes a priority statement that the client compares to its own priority. If the assigned priority does not match with the priority statement, the client refrains from sending floor access request.

Abstract: A controller for controlling a multiparty session in a communication system and a method for is disclosed. The controller comprises a control function configured to host a multiparty session. The control function controls joining of parties to the multiparty session and also selects at least one communication parameter based on discovered capabilities of the parties to the multiparty session. After the selection, information regarding the selected at least one communication parameter is sent to at least one party of the multiparty session.

Abstract: A method enables obtaining parameters relating to a service provided in a communication system. The method comprises storing a first set of parameters relating to a service, the first set of parameters being valid when the service is controlled by a first network. The method further comprises determining whether a second set of parameters is needed, the second set of parameters relating to said service and being valid when said service is controlled by a second network. The method further comprises obtaining the second set of parameters, when needed. A communication device is configured to execute the method.

Abstract: A communication system including a first and second user equipment in communication over a shared floor and a server means for managing the shared floor. According to the system, the server means is arranged to detect an anonymity request from the first user equipment and, responsive to the anonymity request, to prevent the second user equipment from identifying the first user equipment from user plane messages transmitted from the first user equipment to the second user equipment.

Abstract: A method for allocating emergency speech items in a mobile communication system comprising a network infrastructure (BS), a first subscriber station (MS1) connected to it, and at least one other subscriber station (MS2, MS3), the method comprising maintaining a group call consisting of speech items between the first subscriber station (MS1) and at least one other subscriber station (MS2), transmitting an emergency speech item demand (101) from the first subscriber station (MS1), which is in an emergency, to the network infrastructure (BS), and transmitting an emergency speech item grant message (102) from the network infrastructure to the first subscriber station. The method further comprises transmitting, to the at least one other subscriber station (MS2, MS3), emergency speech item information (103) containing the identifier of the first subscriber station (MS1) and indicating that an emergency speech item has been allocated (102) to the first subscriber station.

Abstract: A call establishment in a mobile communication system comprising mobile stations that contain database in which are marked first calls of a first priority level, and a network infrastructure which the mobile stations communicate with. The process includes the steps of defining in tie database of the mobile station one or more force-controlled calls provided with a second priority level being higher than first priority level and directing the mobile station to one or more forced-controlled calls of the second priority according to the priority of the second call.

Abstract: A radio system and a method of transmitting data in a radio system, in which each base station has a radio channel operating as a call channel for signalling between the base station and mobile radio stations. User data can be transmitted on control channels among the actual control signalling, but the data transmission may block the control channel and prevent the normal operation of the control channel. The radio system includes for the user data transmission at least one radio channel operating like a control channel, but transmitting signalling that prevents the mobile stations from selecting the radio channel as a control channel.

Abstract: A call control method in a transmission trunking radio system, in which (i) M traffic channels are simultaneously allocated to at most N mobile stations for a call, N and M being positive integers and N>M; and (ii) a mobile station is commanded to go onto one of the M traffic channels during a call for the duration of the call transactions only and onto a control channel at other times. The number N of calls can be optimized by (iii) collecting data about collisions of call transactions of different calls on the M traffic channels, and (iv) automatically adjusting the maximum number N of simultaneously allowed calls in accordance with the collected data.

Abstract: A radio system, including a fixed radio network having base stations and mobile radio stations. Each mobile station with no ongoing call normally monitors messages transmitted by a base station on a control channel in order to enable a fast call set-up. The user may select for a mobile station a normal operating mode, in which messages on the control channel are monitored continuously, as well as an alternative operating mode, in which the mobile station may stop monitoring the control channel at suitable moments for a time of absence known by the radio network, during which time the radio network does not try to send messages to the mobile station.