SDX Software in the ETSI-TISPAN Architecture
Figure 23 shows the SDX software in the ETSI-TISPAN architecture.
The SAE provides the A-RACF functionality, and the SDX software provides a northbound Rq interface from the A-RACS to the SPDF. This interface is equivalent to the Rq interface defined in the ETSI-TISPAN release 1 architecture. It is a DIAMETER protocol-based interface that allows the SDX software to integrate with services found on the application layer of IMS.
The SDX software uses its COPS and BEEP interfaces as the Re interface to Juniper Networks routers.