Patent ID: 7770216

Claim:
A method for transparent access authentication of subscribers connected to an authenticating network domain by a General Packet Radio Service GPRS core network or an Universal Mobile Telecommunication System UMTS network, comprising: receiving a context creation request from a subscriber; assigning an IP address to the context creation request; receiving a check-in ID from the subscriber; receiving a private identification PrivID from the subscriber, the PrivID being correlated with a pre-recorded ID of the subscriber and stored together in a subscriber database; comparing the check-in ID with the pre-recorded ID; authenticating the subscriber when the check-in ID matches the pre-recorded ID; providing a routing module ( 7 ) as a standard entry point for all messages and deciding, in the routing module ( 7 ), by evaluation of the PrivID, which network node will handle the message, wherein when a protocol other than Session Initiated Protocol SIP is found, the message is routed to a proxy server.