CAN/CSA-ISO/IEC 21989:04 (R2022) :
Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Short message service (Adopted ISO/IEC 21989:2002, first edition, 2002-07-01)
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Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network -
Specification, functional model and information flows - Short message service (Adopted ISO/IEC 21989:2002, first edition, 2002-07-01)
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