1 Scope
2 References
3 Definitions
3.1 Terms defined elsewhere
3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
6 Existing Recommendations concerning the subjective quality evaluation in
case of pure transmission delay
6.1 Audio delay
6.2 Video delay
6.3 Synchronization between audio and video
7 Conversation features
7.1 Two-party and multi-party conversations
7.2 Two analysis techniques
7.3 Conversation analysis and turn-taking
7.4 Conversation structure and styles
7.5 Backchannels and other behaviours during conversations
7.6 Conversation surface structure analysis
8 The impact of delay
8.1 Turn-taking with delay
8.2 Conversation surface structure and delays
8.3 Multiparty and two-party conversations with delay
8.4 Other side-impacts of delay
9 Factors influencing the impact of pure delay
9.1 Audiovisual telemeetings
9.2 User expectations
9.3 Asymmetric delay between participants and co-location
9.4 Interpersonal influences
10 Testing methods
10.1 General comments
10.2 Conversational-opinion tests
10.3 Group interaction tests
10.4 Communication system effectiveness tests
10.5 Micro-feature tests
11 Areas for further research regarding the impact of delay
Annex A – Suggestions for free-conversation tasks
A.1 'Holiday' task
A.2 Role-playing games
A.3 "Who am I?" Celebrity Name-Guessing Task
A.4 Navigation tasks
A.5 Story with missing parts
A.6 Building blocks task – variation
A.7 Survival task – variations
Annex B – Suggestions for delay-critical tasks
B.1 Information exchange tasks
B.2 Random number verification task timed
Bibliography