Nowadays, sound is one ofthe main disadvantages in offices in order to achieve a suitable environment for work. One of the actions that generates more discomfort are telephone calls. Therefore, solutions such as a phone booths are ideal in order to generate these calls privately and without disturbing the users around. In this project, a deep study about the alternatives for making a phone call and the needs of the users has been carried out. Finally, a product has been designed in order to make these mentioned phone calls as comfortable as possible and affecting the work environment minimally. In order to make it, an extensive study ofthe behaviour of sound, market research, interviews, questionnaires and the study of user profiles has been carried out. These techniques led to a change of objective in the project, leaving aside the concept of phone booth and betting on the concept of space divider. Afterwards, the necessary ideation and selection techniques were made to choose the most appropriate design, where several changes took place in the final concept. Finally, the conceptual design of the product was finished in detail; all prepared for future work in the manufacture of prototypes and sound-absorption tests.