Routing Overview

This section provides an overview of routing SIP and H.323 sessions when using the Oracle® Enterprise Session Border Controller. The Oracle® Enterprise Session Border Controller chooses the next hop through the network for each SIP and H.323 session based on information received from routing policies and constraints. Routing policies can be as simple as routing all traffic to a proxy or routing all traffic from one network to another. Routing policies can also be more detailed, using constraints to manage the volume and rate of traffic that can be routed to a specific network. For example, you can manage volume and rate of traffic to enable theOracle® Enterprise Session Border Controller to load balance and route around softswitch failures.

When a call request arrives at the Oracle® Enterprise Session Border Controller, a decision making process then occurs to determine whether the message is coming from a session agent. If so, the Oracle® Enterprise Session Border Controller checks whether that session agent is authorized to make the call. Local policy is then checked to determine where to send the message on to.