The ROMIE cabinets represent a smart solution for easing the access between the operator network and the internal network at the multi dwelling. They can be independently installed by different operators, starting from one secondary unit installed, part of the building, and a second unit, called primary, owned by one operator. Units can be coupled each other, so that several operators can be connected to the inner building network, while having visible their own structure. Cabinets have been designed to provide easy installation, to be craft-friendly and to have reduced visual impact.