Authentication, Authorization, and Accounting (AAA)

The AAA server is another new component associated with CDMA2000
deployment. The AAA provides, as its names implies, authentication, authorization,
and accounting functions for the packet data network associated
with CDMA2000 and utilizes the Remote Access Dial-In User Service
(RADIUS) protocol.
The AAA server, as shown in Figure 7-2, communicates with the PSDN
via IP and performs the following major functions in its role in a
CDMA2000 network:
■ Authentication associated with PPP and mobile IP connections
■ Authorization (service profile and security key distribution and
management)
■ Accounting