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ITU-T Q.81.8 Stage 2 description for number identification supplementary services : Sub-addressing (SUB)
ITU-T Q.953.1 Stage 3 description for call completion supplementary services using DSS 1, Section 1: Call waiting
ITU-T D.7 Concept and implementation of 'one-stop shopping' for international private leased telecommunication circuits
ITU-T D.35 General charging principles in the international public message handling services and associated applications
ITU-T K.29 Coordinated protection schemes for telecommunication cables below ground
ITU-T D.94 Charging, billing and accounting principles for international aeronautical mobile service, and international aeronautical mobile-satellite service
ITU-T X.736 Information technology - Open Systems Interconnection - Systems Management: Security alarm reporting function
ITU-T X.722 Information technology - Open Systems Interconnection - Structure of management information: Guidelines for the definition of managed objects
ITU-T X.730 Information technology - Open Systems Interconnection - Systems Management: Object management function
ITU-T X.731 Information technology - Open Systems Interconnection - Systems management: State management function
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