Communication switch project described DVS20 is aimed at guiding the flow of data between different manufacturers video SFP modules. The main task of capturing the signal switch is in one of the twenty occupied ports, and the conversion of the optical signal into an electrical signal and Dotični brought into the matrix, where it may either automatically or manually via the user-friendly interface SW distribution of the signal or signals to other available ports. Control of the matrix will be implemented through local communication I2C to PIC microcontroller.