Patent ID: 8887235

Claim:
A method, comprising: receiving by an IP network node, from an Internet Protocol (IP) device associated with a user, a request for services provided by a cellular core network including one of GSM and UMTS network, the IP device foreign to the cellular core network, and the IP network node including a direct interface to the cellular core network; transmitting, to a wireless mobile device by the IP network node, a request to generate authentication information using subscriber identification information stored at the wireless mobile device, the wireless mobile device native to the cellular core network, different from the IP device; receiving by the IP network node, from the wireless mobile device, the requested authentication information assigned to the wireless mobile device; and presenting by the IP network node, through the direct interface, the IP device foreign to the cellular core network as a mobile device native to the cellular core network using the authentication information received directly from the wireless mobile device, so that the IP device may access foreign services provided by the cellular core network.