Patent ID: 8249021

Claim:
An apparatus for enabling communications between a CDMA (Code Division Multiple Access) packet data system and a GPRS (General Packet Radio Service) system, wherein a CDMA 2000 packet data native subscriber using Mobile IPv4 (Internet Protocol version 4) roams from a home CDMA 2000 packet data system to a visited GPRS system comprising a SGSN (Serving GPRS Support Node), comprising: means for coupling the home system to the visited system to enable communication between the home system and the visited system, wherein the home CDMA 2000 packet data system comprises a ANSI (American National Standards Institute)-41 home location register, an AAA (Authentication, Authorization, and Accounting) entity, and a home agent; and means for providing a distinct interface for each of the ANSI-41 home location register, the AAA entity, and the home agent.