CDMA2000 Wireless Data Services 
Understanding Simple IP and Mobile IP ▀  
Cisco ASR 5000 Series Product Overview ▄  
Figure 74.  Simple IP Call Flow 
 
Table 52.  Simple IP Call Flow Description 
Mobile Node (MN) secures a traffic channel over the airlink with the RAN through the BSC/PCF. 
The PCF and PDSN establish the R-P interface for the session. 
The PDSN and MN negotiate Link Control Protocol (LCP). 
Upon successful LCP negotiation, the MN sends a PPP Authentication Request message to the PDSN. 
The PDSN sends an Access Request message to the RADIUS AAA server.