1 Scope
2 References
3 Definitions
4 Abbreviations and acronyms
5 Conventions
6 Limitations and important notes
7 Recommended MOS terminology for audio
7.1 MOS related to listening-only situations
7.2 MOS related to conversational situations
7.3 MOS related to talking situations
7.4 Relationship between some audio MOS qualifiers
8 Recommended MOS terminology for video
8.1 MOS-VQS
8.2 MOS-VQO
8.3 MOS-VQE
8.4 Relationship between some video MOS qualifiers
9 Recommended MOS terminology for audiovisual services
9.1 MOS-AVQS
9.2 MOS-AVQO
9.3 MOS-AVQE
9.4 Relationship between some audiovisual MOS qualifiers