Data group paging service

The Invention relates to methods for establishing a data connection with a group call service between multiple group members as users of a mobile communication network. In a first method functions of an IP Multimedia be Subsystem, IMS, used with a Session Initiation Protocol, SIP, controlled data connection between a transmitter terminal and a prepared or more receivers is, each user in addition to a group call service identity, VGCS ID, an IMS group identity, IMS group ID, is allocated by means of which the user to a Application Server in the IMS is routed, which a data group call service between the users unwinds. In a second method, each user is using a group call service identity, VGCS ID, and an IP address of a service node via GPRS to the service node routed, which acts as a relay and a data group call service unwinds between users.