BigBlueButton is an OpenSource software and is licensed under a LGPL license.
Virtual classrooms using BigBlueButton have a rich feature set, such as desktop sharing and presentation of files (e.g. Microsoft Office documents, Open Office documents, PDF documents), markers or notes directly in the document (e.g. pointer, zoom function and marker function), chat with all participants and private chats, recordings etc.
Access to the application is via your course in StudIP with the "Meetings" module activated.
Microsoft Teams is a component of the Office365 Education Program and is therefore available to the university free of charge. With Teams we have a professional collaboration software for teaching, in which we can hold online lectures or meetings with up to 250 participants per meeting in the first step.
The University of Wismar provides a central video conferencing and streaming service for all of its members. It offers the possibility to communicate via audio and video independent of location and without the installation of any software. Up to 23 people can currently use this service to meet online in a video conference via an encrypted, stable connection. External guests without a university account can easily be invited.