1 Scope
2 References
3 Definitions
3.1 Terms defined elsewhere
3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
5.1 Requirement terminology
5.2 Icons used
6 High-level QoE considerations for telepresence services
6.1 Telepresence system description
6.2 Use cases
7 Audio characteristics
7.1 Send and receive loudness ratings
7.2 Send and receive side frequency responses
7.3 Send and receive side distortion
7.4 Send and receive side noise
7.5 Directionality of audio (spatial characteristics)
7.6 Acoustic echo/double talk
7.7 Intelligibility of audio
8 Video characteristics
8.1 Actual size
8.2 Resolution (definition)
8.3 Image quality
8.4 Eye gaze
8.5 Spatial considerations for video
9 Display characteristics
9.1 Screen size
9.2 Aspect ratios
9.3 Continuity across borders
9.4 Colour space (4:2:2, 4:2:0, 4:4:4)
9.5 Colour fidelity
9.6 Mirrored image
10 Audiovisual characteristics
10.1 Absolute delay of audio and video streams
10.2 Lip sync
11 Room characteristics
11.1 Background noise
11.2 Reverberation
11.3 Lighting
11.4 Sound uniformity
11.5 Impact of seating arrangements
11.6 Temperature
11.7 Humidity
11.8 Audibility in local room
12 Other characteristics
12.1 Ease of use
Bibliography