The DRA was introduced by the 3GPP to address the increased Diameter signalling traffic and growing complexity of 4G LTE wireless core networks. The roles the DRA plays are listed below

 

    • Relay Agent Functions
    • Proxy Agent Functions
    • Re-director Agent Functions
    • Mediation Agent Functions
    • Translation Agent Functions
    • Congestion & Admission Control of Diameter Messages
    • Diameter Firewall/Topology Hiding Functions