Mobile radio connection establishing method for mobile terminal, involves establishing mobile radio connection directly at visitor network without intermediate connection of home network of respective mobile terminal such as smart phone

摘要

The method involves sending two messages with invitations to two mobile terminals (200, 300), respectively, to select a global system for mobile communication (GSM)-visitor network (100). The pre-determined visitor network is selected as the visitor network with the respective terminal, where the terminals can be mobile telephone, smart phone and personal digital assistant (PDA) with mobile telephone functions. A mobile radio connection is established directly at the visitor network without an intermediate connection of a respective home network of the respective terminal.