Service Context
A service context is a service type of a service specific to a certain service type. Each service context can be rated differently.
When a service is created, it includes an empty default service context type in which you define fallback values for the rating settings, aggregation settings, quota settings, authorized quantities, and Diameter final unit information (FUI) categories. The settings within each category are treated as a unit. The default service context type serves as a fallback. During rating, a custom service context type is selected to rate a session. If the custom context type does not have any parameters in a particular category, all the parameters in the corresponding category of the default service context type are used. You can also specify a PreRating generator and a PostRating generator in the default service context.