A subscription is an object that represents an enrollment to a service. Each subscription provides access to a particular service for that subscriber. A subscriber can have multiple subscriptions to a service.
If the service provider uses the SRC directory to hold all their subscriber data, residential subscribers must subscribe to primary services—such as Broadband Remote Access Server (B-RAS) through Point-to-Point protocol (PPP) or B-RAS through Dynamic Host Configuration Protocol (DHCP)—before subscribing to a service.
Enterprise subscribers must subscribe to an access (that is, a leased line), either directly or in a site or subscriber folder that is subordinate to the enterprise. Without an access subscription, a service session cannot run in the network.