scope:

Telemeeting systems can be realized in numerous ways, ranging from telephone conference bridges over audiovisual computer-based solutions to high-end telepresence systems and extended reality (XR) meetings. The solutions can differ in various aspects such as required devices with different form factors and setup complexity, used transmission technology and communication modality, including collaboration and management features, etc.

For a proper quality assessment of telemeeting systems, a structured method to characterize these different types of systems is required. On the one hand, this will facilitate precise comparison of telemeeting systems and their quality. On the other hand, this will help to avoid misinterpretation of assessment results, which may arise due to comparing results of different telemeeting systems that are too different in their character.

For that reason, this Recommendation provides a taxonomy for characterizing telemeeting systems, focussing on those aspects that are crucial for quality of experience (QoE) assessment. The present Recommendation builds on existing definitions as given in [ITU-T P.10], [ITU-T G.1000] and [ITU-T P.1301]. Moreover, the present Recommendation outlines how such a characterization can be used for choosing appropriate QoE assessment methods by referring to relevant ITU-T Recommendations such as [ITU-T G.1011], [ITU-T P.1301] and [ITU-T P.1310].