A user device that has a user identity for which the registration has significance across the entire key management infrastructure (KMI) (i.e., the identity’s registration data is maintained in a database at the primary services node (PRSN) level of the system, rather than only at an MGC) and for which a product can be generated and wrapped by a product source node (PSN) for distribution to the specific device.
Sources:
CNSSI 4009-2015