Aspects of the present invention relates to a communications module for a door station, comprising a connection interface for communications with at least one door station in accordance with a door station communication protocol, a network interface for communications via a network in accordance with a network communication protocol, and a controller coupling the network interface and the connection interface, wherein the controller is configured to set or change the door station communications protocol of the connection interface. Further aspects of the present invention relate to a method of operating a communications module of a door station.