Packet-data-based area group communication

A method for establishing a group voice communication based on IP comprising several terminals (UT1, UT2) and at least one wireless access network (RAN) and a packet network data (GPRS) connected to it, to transmit IP data packets between terminals (UT1, UT2) and at least one server (PoC) controlling voice communication group in the specifications related to the site are set for a group voice communication, and group voice communication based on IP is established between at least two terminals, characterized by the fact that specifications relating to the space for the group voice communication to be established comprising a predetermined maximum distance from a point reference, set between the group members; requiring the activation of the group members location within an area of ​​activity by the maximum distance, in which, in response to location information of at least one terminal (UT2, UT3) determined in a start request from a first terminal for voice communication IP-based group indicating that the at least one terminal (UT2, UT3) is located within the area of ​​activity of the group voice communication, a group voice communication based on IP it is set (326-330) between the first terminal (UT1) and the at least one terminal (UT2, UT3).