CAN/CSA-ISO/IEC 21990:04 (R2022) :
Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Short message service (Adopted ISO/IEC 21990:2002, first edition, 2002-07-15)
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SKU: 2701904
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Download a list of included itemsCAN/CSA-ISO/IEC 21990:04 (R2022)
Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Short message service (Adopted ISO/IEC 21990:2002, first edition, 2002-07-15)
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