Patent ID: 7522584

Claim:
A method for changing between a packet-oriented PTT session and a circuit-oriented telephone connection as two selectable communication connections between at least one first radio communication appliance and at least one second radio communication appliance in a radio communication system, the method comprising: selecting and setting up a first of the two communication connections by at least one of the at least one radio communication appliance and at least one control unit in a radio network in the radio communication system; and changing from the first communication connection, which has already been set up, to a second of the two communication connections under control of at least one of the radio communication appliance which is connected to the first communication connection and a first control unit in the radio network in the radio communication system which is connected to the first communication connection by activating the second communication connection while the first communication connection still exists, wherein the first communication connection is cleared down and terminated after the second communication connection has been established.