A quota
plan describes a subscriber's basic, recurring service. Plans include policy characteristics such as time and volume limits. These characteristics can be computed automatically or through policy rules. Policy actions grant plans, based on a subscriber's tier or entitlement.
A basic quota refers to the quota associated with a plan and is used to handle recurring, periodic quotas typical of post-paid mobile data plans. The controls on a basic quota can be overridden by passes, rollovers, and top-ups.