The Education and Information Centre if Szeged University is a conference centre that can be used for multiple purposes. The three largest lecture halls have a capacity of 700, 200 and 180 people. When selecting and installing the products used in the audiovisual systems it was a key factor that we should choose devices that can be used and handled easily. From the control centre belonging to the largest lecture hall, there is a chance to mix microphones and other audio sources, to control projections and even to transmit them to the video system covering the whole building. The installed devices are continuously expanded and modernised by the operators, so today the modern building operates interpretation and several mobile systems as well.