Access Border Functions

The Oracle Communications Unified Session Manager is deployed as the access point between the core IMS network and UEs to deliver the functions defined in the TISPAN architecture as the P-CSCF, and A-BGF. These two functions can not be separated. The Oracle Communications Unified Session Manager performs the following functions as the Access Oracle Communications Unified Session Manager:

• P-CSCF functions
• Access Border Gateway Functions (A-BGF)
• Resource and Admission Control Functions (RACF)