A DALI System having - a DALI bus, - at least one DALI device (3a, 3b, 3c), and at least one signaling device, - an upper voltage value range being established for the bus voltage of the DALI bus for transmitting a high-level DALI signal via the DALI bus according to the DALI standard, and the bus voltage of the DALI bus being within the upper voltage value range in the idle state, - a lower voltage value range being established for the bus voltage of the DALI bus for transmitting a low-level DALI signal via the DALI bus according to the DALI standard, and - the at least one DALI device (3a, 3b, 3c) (Fig. 2: 10) being connected to the DALI bus as a bus participant, - the at least one signaling device being connected to the DALI bus, - the at least one DALI device (3a, 3b, 3c) being configured, in the connected state, to receive at least one DALI signal by detecting a reduction in the bus voltage of the DALI bus in the idle state to a voltage value within the lower voltage value range, - the at least one signaling device being configured to change the bus voltage of the DALI bus in the idle state to a predetermined voltage value, characterized in that the at least one signaling device is further configured, in the connected state, to transmit at least one signal via the DALI bus by changing the bus voltage to the predetermined voltage value within the upper voltage value range, the at least one DALI device (3a, 3b, 3c) also being configured to detect and evaluate the change in the bus voltage of the DALI bus in the idle state to the predetermined voltage value within the upper voltage value range: - the at least one device (3a, 3b, 3c) being configured, in the connected state, to receive the change in the bus voltage of the DALI bus in the idle state to the predetermined voltage value and in the reduction of the bus voltage of the DALI bus from the predetermined voltage value to the voltage value within the lower voltage value range as the at least one DALI signal. - a DALI bus, - at least one DALI device (3a, 3b, 3c), and at least one signaling device, - an upper voltage value range being established for the bus voltage of the DALI bus for transmitting a high-level DALI signal via the DALI bus according to the DALI standard, and the bus voltage of the DALI bus being within the upper voltage value range in the idle state, - a lower voltage value range being established for the bus voltage of the DALI bus for transmitting a low-level DALI signal via the DALI bus according to the DALI standard, and - the at least one DALI device (3a, 3b, 3c) (Fig. 2: 10) being connected to the DALI bus as a bus participant, - the at least one signaling device being connected to the DALI bus, - the at least one DALI device (3a, 3b, 3c) being configured, in the connected state, to receive at least one DALI signal by detecting a reduction in the bus voltage of the DALI bus in the idle state to a voltage value within the lower voltage value range, - the at least one signaling device being configured to change the bus voltage of the DALI bus in the idle state to a predetermined voltage value, - an upper voltage value range being established for the bus voltage of the DALI bus for transmitting a high-level DALI signal via the DALI bus according to the DALI standard, and the bus voltage of the DALI bus being within the upper voltage value range in the idle state, - a lower voltage value range being established for the bus voltage of the DALI bus for transmitting a low-level DALI signal via the DALI bus according to the DALI standard, and - the at least one DALI device (3a, 3b, 3c) (Fig. 2: 10) being connected to the DALI bus as a bus participant, - the at least one signaling device being connected to the DALI bus, - the at least one DALI device (3a, 3b, 3c) being configured, in the connected state, to receive at least one DALI signal by detecting a reduction in the bus voltage of the DALI bus in the idle state to a voltage value within the lower voltage value range, - the at least one signaling device being configured to change the bus voltage of the DALI bus in the idle state to a predetermined voltage value, characterized in that the at least one signaling device is further configured, in the connected state, to transmit at least one signal via the DALI bus by changing the bus voltage to the predetermined voltage value within the upper voltage value range, the at least one DALI device (3a, 3b, 3c) also being configured to detect and evaluate the change in the bus voltage of the DALI bus in the idle state to the predetermined voltage value within the upper voltage value range: - the at least one device (3a, 3b, 3c) being configured, in the connected state, to receive the change in the bus voltage of the DALI bus in the idle state to the predetermined voltage value and in the reduction of the bus voltage of the DALI bus from the predetermined voltage value to the voltage value within the lower voltage value range as the at least one DALI signal. - the at least one device (3a, 3b, 3c) being configured, in the connected state, to receive the change in the bus voltage of the DALI bus in the idle state to the predetermined voltage value and in the reduction of the bus voltage of the DALI bus from the predetermined voltage value to the voltage value within the lower voltage value range as the at least one DALI signal.