Diameter is the key signaling protocol in modern IP-based telecom networks, supporting:

• policy control,
• charging,
• authentication,
• authorization,
• accounting (AAA).

With the growth of LTE networks and IMS deployments, Diameter traffic volumes increase significantly, creating challenges related to scalability, routing and interoperability.

The DRA/DEA (Diameter Routing / Edge Agent) provides a single centralized connection point for all network elements using the Diameter protocol, enabling efficient service management in 3G, LTE and IMS networks.

The system performs centralized routing, traffic management and dynamic capacity control, allowing LTE and IMS networks to scale efficiently while reducing complexity in interconnections and redundancy.