In recent years, videoconferencing in general and especially in the context of the Corona pandemic has become more widespread than ever before. It has been shown that many aspects of interpersonal communication are lost and at the same time a significantly increased cognitive load arises for the users. In MULTIPARTIES, novel, interactive technologies for the realization of collaborative telepresence systems in augmented reality (AR) will be developed: Using realistic augmented reality avatars with expressive gestures and facial expressions in combination with spatialAudio, MULTIPARTIES creates a shared communication space. This gives participants the impression of being together in one place (telepresence and co-presence). MULTIPARTIES also enables the intuitive use of body language and selective acoustic perception and communication. Among other things, the project will overcome the major limitations of previous systems with regard to interpersonal communication. The success of MULTIPARTIES can be measured both by user-centered evaluation of the technologies and by comparison with other systems.