Device that allows to regenerate the Duox signal in both directions, isolate sections of the installation, as well as extend distances and terminal capacity. Input and outputs are isolated, against short circuits, load and signal reflections. It generates an additional call channel between the panel and the house when it is used to isolate an individual block or house, so that it is possible to simultaneously hold a conversation in each BI or house that has it. It has 1 Entrance and 1 Exit. The sections on both sides require their own power set (“filter + source”): the 1-output regenerator amplifies the data, but does not let the power through.