ISO/IEC 21990
Information technology; Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol; Short message service
Informationstechnik - Telekommunikation und Informationsaustausch zwischen Systemen - Private diensteintegrierende Netze - Zeichengabe zwischen Telekommunikationsanlagen - 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