Modular connectors based on the format of 80x80mm. This is a system to share modules 45x22, 45x45mm 5mm and so obtain a junction box as 80x80mm. Compatible with recessed boxes and 80x80mm wide variety of interchangeable modules. Surface box for the system of interchangeable modules. Interchangeable modules related to UTP RJ45 connectors and RJ11 phone.