The following diagram gives examples of subclasses of AtomicProductSpecification that can be defined when it is required to specify particular relationships or attributes for specific ProductSpecification. <br/><i>In SID, only the specificities of NetworkProductSpec, UsageVolumeProductSpec and LoyaltyProductSpecification have been detailed for the moment.</i><br/>The NetworkProductSpec defines intangible products. It represents the common behavior and description of an installed network product that will be provisioned in the network and that enables usages, like a Mobile Line.<br/>A UsageVolumeProductSpec defines buckets of usage, such as 2 hours national calls. A UsageVolumeProductSpec requires one or many NetworkProductSpecs from which Usages will debit the bucket.<br/>A RatePlanProductSpec defines criteria to be used to gain special usage tariffs like the period (Ex: evenings and week-ends) or phone number (Ex: friends and family). The ProductOffering packaging a RatePlanProductSpec defines the Usages’ ProductOfferingPrice conditioned by the criteria. A RatePlanProductSpec requires a NetworkProductSpecs.<br/>The GoodsProductSpec corresponds to the specification of material goods.<br/>The LoyaltyProgramProdSpec defines the LoyaltyRules that have to be checked to identify the actions to apply. A dedicated guide book describes all what is related to Loyalty.<br/>The FieldOperationProductSpec is a ProductSpecification corresponding to the intervention of an employee (from the marketing operator or one of his Suppliers) such as “Internet installation at home”, “Internet training”…It requires an Appointment.<br/>A DirectoryProductSpec is a ProductSpecification corresponding to publication of information (like associated subscriber name and address) of a telecommunication line with its phone number in a telephone directory.<br/>A ShippingProductSpec defines the possible choices of configuration for the shipment of one or several GoodsProductSpecs like the place to ship, the delay…<br/>A ServiceLevelProductSpec is a type of ProductSpecification that defines KPI that have to be evaluated and the threshold that must be respected. These KPIs are described by a ServiceLevelSpec. Note: Service Level Spec ABE has to be updated according to Metric ABE.<br/>