How do I perform numeric encoding of the Video door entry system?

Each video door entry unit is identified the DigiBUS system with a numerical code of 4 or 8 digits. To do this you need to lift the cover of the D-key, briefly press the R button located below the D-key, and then press and hold the B button for at least 5 seconds. At this point red LED of the Video door entry unit lights up, confirming that the device is ready to be encoded. Make a call from the outdoor station with the desired numerical code (if you have a plate with an alphanumerical keypad, just type in the code and send it to the device by pressing the "C" button on the plate), the programming is confirmed when the red LED on the Vimar monitor turns off and an acoustic signal is emitted from the plate.