The IperCom interface with the lift control units is achieved by changing the status of one or more inputs of these control units through the 24 control relays. The interface allows the lift to reach the desired floors based on certain system events (call from an apartment, door opener code input, or key swipe). Its operation can be in floor mode or apartment mode. In the first mode, the apartments on the same floor share the same relay activation scheme. In the second, a different configuration can be associated with each individual apartment.