DE-CIX operates one of the world’s largest Internet exchanges in Frankfurt am Main. A quiet environment is essential for concentrated work here. However, a large office environment with lots of people and technology often creates a problematic acoustic atmosphere. With the help of HOFA modules, all offices, meeting rooms and corridors have been acoustically optimized. There is now optimum speech intelligibility for stress-free meetings, as well as comprehensive sound absorption and insulation for a working environment without acoustic disturbance factors.