Each Basic set has ten addresses. The Set devices themselves occupy two addresses per door station and one per indoor station. All other addresses are available for extensions. The video shows some application examples.
Inside: eight Basic indoor stations, up to four in parallel call
Outside: four door stations, of which one is from the set and three Vario, Classic or Steel
Telephone: landline telephone as an indoor call station via the DoorCom Analog (DCA 650) interface
Switching: control of additional switching functions via the bus switching unit (BSE 650)