This telephone works with Bibus system, it is equipped with 3 buttons and a LED. One button is used to call the switchboard, another one to activate a special decoder and the last one to activate the automatic door opener.
The LED indicates the status of the open door, the power-on status and is also equipped with a call and mute setting also indicated by the LED.
It is configured for floor calls and repeat calls, it has 6 ring tones.
