ISO/IEC 21989
Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Short message service
Informationstechnik - Telekommunikation und Informationsaustausch zwischen Systemen - Private diensteintegrierende Netze; Beschreibung, Funktionsverteilung und Informationsaustausch; Kurznachrichtendienst
Responsible national committee
NA 043-04-17 AA - Cards and security devices for personal identification
Responsible international committee
ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems