The present document defines the principal purpose and use of different naming, numbering, addressing and
identification resources (i.e. Identifiers (ID)) within the digital cellular telecommunications system and the 3GPP
IDs that are covered by this specification includes both public IDs, private IDs and IDs that are assigned to MSs/UEs.
Many of the IDs are used temporary in the networks and are allocated and assigned by the operators and some other IDs
are allocated and assigned on either global, regional and national level by an administrator. See ITU‑T