Enumerations

Enumerations, commonly called enums, are a data type that represents a collection of predefined, constant values. They provide a way to group related constants, making the code more readable, maintainable, and less error-prone by ensuring only valid values are used.
In the context within SIP servlets, enums are used to define key routing behaviors and parameters. They encapsulate specific, unchanging values that guide how routing and proxying decisions are made in SIP applications. These enums help standardize interactions with the SIP container, ensuring clear communication and precise control over routing logic.

Enums in Proxying and Routing:

• SipApplicationRoutingDirective: Represents the routing directive, guiding how SIP requests should be processed, routed, or forwarded.
• SipApplicationRoutingRegionType: Identifies the type of routing region, such as ORIGINATING, TERMINATING, or NEUTRAL, classifying the logical context of the request.
• SipRouteModifier: Defines the route modification behavior, instructing the SIP container on how to manage the routing path, such as whether to include, modify, or bypass specific routes.
• SipTargetedRequestType: Categorizes targeted requests, enabling the container to handle specialized request types like ENCODED_URI, JOIN, or REPLACES, which specify targeted applications or contexts.