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ITU-T X.722 AMD 2 Addition of the NO-MODIFY syntax element and guidelines extension
ITU-T X.722 AMD 3 Guidelines for the use of Z in formalizing the behaviour of managed objects
ITU-T X.749 Information technology - Open Systems Interconnection - Systems Management: Management domain and management policy management function
ITU-T H.231 Multipoint control units for audiovisual systems using digital channels up to 1920 kbit/s