Patent ID: 8539084

Claim:
A method for establishing a packet communication between a first server (S) connected to a packet network and a service entity (ES) within a radio communication network (RR), the method comprising: transmitting (E 3 -E 4 ; F 3 -F 4 ) an identifier (IdES) of the service entity (ES) from that entity to a second server (SO), determining (E 5 ; F 5 ) an address (AdS) of the first server (SS) as a function of the service entity identifier (IdES) received within the second server (SO) and transmitting (E 5 ; F 5 -F 7 ) the determined address of the first server (AdS) from the second server (SO) to a gateway (SGSN) connecting the radio communication network (RR) and the packet network (RP) and establishing, (E 5 ; F 7 ) by the gateway (SGSN), a communication between the service entity (ES) and the first server (SS) based on the determined address of the first server (AdS) and without a need for a subscriber identification module.