A Service Class Specification defines a group of one or more SOP Classes related to a specific function that is to be accomplished by communicating Application Entities. A Service Class Specification also defines rules that allow implementations to state some pre-defined level of conformance to one or more SOP Classes. Applications may conform to network SOP Classes as a Service Class User (SCU), Service Class Provider (SCP), User Agent or Origin Server, and to media exchange SOP Classes as a File Set Creator (FSC), File Set Reader (FSR), or File Set Updater (FSU).

Service Class Specifications are defined in this Part of the DICOM Standard.