Service Context Type Properties
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 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 specific 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.
Note: The PreRating generator and PostRating generator can only be changed on the default
service context and are inherited by all custom context type definitions.