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ITU-R F.764-1 Minimum requirements for HF radio systems using a packet transmission protocol
ITU-T J.51 General principles and user requirements for the digital transmission of high quality sound programmes
ITU-T J.91 Technical methods for ensuring privacy in long-distance international television transmission
ITU-T E.453 Facsimile image quality as corrupted by transmission-induced scan line errors
ITU-R P.310-9 Definitions of terms relating to propagation in non-ionized media
ITU-R P.1060-0 Propagation factors affecting frequency sharing in HF terrestrial systems
ITU-R P.844-1 Ionospheric factors affecting frequency sharing in the VHF and UHF bands (30 MHz-3 GHz)
ITU-T J.21 Performance characteristics of 15 kHz type sound-programme circuits - Circuits for high quality monophonic and stereophonic transmissions
ITU-T X.200 Information technology - Open Systems Interconnection - Basic Reference Model: The basic model
ITU-T X.216 Information technology - Open Systems Interconnection - Presentation service definition
ITU-T X.226 Information technology - Open Systems Interconnection - Connection-oriented Presentation protocol: Protocol specification
ITU-T X.234 Information technology - Protocol for providing the OSI connectionless-mode transport service