A method for commissioning an elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) to a communication network of an elevator system, the method, performed by a control device, comprises: receiving a system configuration data at least providing a network topology of the communication network and definitions of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6), the definitions of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) in the system configuration data at least defining a location of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) in a building the elevator system is operative and a communication port of a switching device (SD1, SD2) the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) is communicatively connected to, inquiring, in accordance with the network topology of the communication network, a network address of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) from the switching device (SD1, SD2), an inquiry is performed on a communication port basis for the switching device (SD1, SD2), associating the location of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) in the building as defined in the system configuration file with the network address of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6), received through the inquiry, based on the communication port of the switching device (SD1, SD2) serving the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6), and commissioning the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) by transmitting a configuration data of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) to the network address of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) received through an association. receiving a system configuration data at least providing a network topology of the communication network and definitions of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6), the definitions of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) in the system configuration data at least defining a location of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) in a building the elevator system is operative and a communication port of a switching device (SD1, SD2) the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) is communicatively connected to, inquiring, in accordance with the network topology of the communication network, a network address of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) from the switching device (SD1, SD2), an inquiry is performed on a communication port basis for the switching device (SD1, SD2), associating the location of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) in the building as defined in the system configuration file with the network address of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6), received through the inquiry, based on the communication port of the switching device (SD1, SD2) serving the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6), and commissioning the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) by transmitting a configuration data of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) to the network address of the elevator signalization device (ESD1, ESD2, ESD3, ESD4, ESD5, ESD6) received through an association.