System for transmitting time-critical analogue signals and digital signals between at least two transmission-side devices (110, 130) and at least two receiving-side devices (170, 190) via a data transmission network, comprising: at least one transmission-side protocol converter which can be connected to in each case at least two of the transmission-side devices (110, 130), wherein the transmission-side protocol converter is configured to receive analogue signals and digital signals from the at least two transmission-side devices (110, 130) and to generate data packets from the received analogue signals and digital signals, and at least one receiving-side protocol converter which can be connected to in each case at least two of the receiving-side devices (170, 190), wherein the receiving-side protocol converter is configured to convert the data packets generated by the transmission-side protocol converter into further analogue signals and further digital signals, wherein the transmission-side protocol converter is configured to transmit the data packets generated by the transmission-side protocol converter to the receiving-side protocol converter via the data transmission network, wherein a connection between the at least two transmission-side devices (110, 130) and the at least two receiving-side devices (170, 190) is designed to be flexible to the effect that the receiving-side protocol converter contains a receiving-side configuration unit which is configured in such a way that, while taking parameters of the at least two receiving-side devices (170, 190) into account, it defines which of the at least two receiving-side devices (170, 190) receives one of the further analogue signals and which of the at least two receiving-side devices (170, 190) receives one of the further digital signals, wherein the parameters comprise one or more of the following parameters: availability, range, type of modulation, and transmission/reception frequencies. at least one transmission-side protocol converter which can be connected to in each case at least two of the transmission-side devices (110, 130), wherein the transmission-side protocol converter is configured to receive analogue signals and digital signals from the at least two transmission-side devices (110, 130) and to generate data packets from the received analogue signals and digital signals, and at least one receiving-side protocol converter which can be connected to in each case at least two of the receiving-side devices (170, 190), wherein the receiving-side protocol converter is configured to convert the data packets generated by the transmission-side protocol converter into further analogue signals and further digital signals, wherein the transmission-side protocol converter is configured to transmit the data packets generated by the transmission-side protocol converter to the receiving-side protocol converter via the data transmission network, wherein a connection between the at least two transmission-side devices (110, 130) and the at least two receiving-side devices (170, 190) is designed to be flexible to the effect that the receiving-side protocol converter contains a receiving-side configuration unit which is configured in such a way that, while taking parameters of the at least two receiving-side devices (170, 190) into account, it defines which of the at least two receiving-side devices (170, 190) receives one of the further analogue signals and which of the at least two receiving-side devices (170, 190) receives one of the further digital signals, wherein the parameters comprise one or more of the following parameters: availability, range, type of modulation, and transmission/reception frequencies.