CDMA AN-AAA (access network authentication, authorization and accounting server ))

AN-AAA (Access Network-authentication, accounting, authorization server) access network authentication, authorization and accounting server, the current use of RADIUS server. AN-AAA authentication for EV-DO users, complete the authentication function of EV-DO user terminal identity legitimacy, that is, an-level authentication. At the same time, AN-AAA to complete the EV-DO user terminal account management function.

N and CDMA 1X network is different, in the CDMA 2000 EV-DO network, EV-DO user access network identity authentication will not pass HLR, but through the AN-AAA of EV-DO user identity authentication.

Nan and AN-AAA use the extended RADIUS protocol defined by PP2, this interface is called the A12 interface, used for an-level authentication

Nev-Do user terminal access network, an user's CHAP authentication information through the access-Request Message to the AN-AAA, The AN-AAA to determine the identity of the user terminal is legal, with access to the EV-DO network permissions, access-accept is returned; otherwise, access-reject is returned. Supports switching between pdsns of Mobile IP addresses.