The Diameter Solution Suite (DSS) can be deployed in the EPC to act as a DRA and DEA at the same time. All elements connect to the DRE and all Diameter traffic passes through the DSS. The DSS examines the Diameter messages and performs load balancing and binding across the multiple instances of the HSS and H-PCRF. The DSS is deployed at the edge of the home and visited PLMN and optionally in a geographic redundant configuration for disaster recovery.
