19” cabinet for sharing access to services integrated in the suspended ceiling. The convergence of technologies towards IP requires buildings to evolve their network infrastructure. The ISO 11801-6 standard relative to generic cabling of user premises, in support of distributed services, accompanies this change. Pre-cabling such as we imagine, evolves to become pre-cabling which is shared more and more, which extends the installation life and facilitates changes within the building throughout its life. The CEILING BOX is thus the service concentration point, which means the pre-cabling of the building is modular and upgradeable. It can be discretely installed in connected buildings in suspended ceilings, in pace of one of the tiles and thus facilitate post-cabling actions. MODULAR and EVOLVING building solutions