The present disclosure relates to a medical system (1), comprising a plurality of devices (10, 20, 30) forming nodes of a network, wherein each device (10, 20, 30) of said plurality of devices is configured to communicate with another device in a wireless fashion by receiving a message from another device in the network or by transmitting a message to another device in the network, and wherein a priority is assigned to each device (10, 20, 30), wherein as long as no other transmission of a message is ongoing in the network, each device (10, 20, 30) is configured to initiate a transmission of a message by transmitting a start signal (SI, S2, S3), wherein the higher the priority of the respective device (10, 20, 30), the higher the duration (D1, D2, D3) of the start signal (SI, S2, S3) allocated to the respective device (10, 20, 30), and wherein in case several devices in the network simultaneously initiate a transmission of a message by transmitting a start signal, a permission to transmit a message is automatically granted to the device in the network with the highest priority. Furthermore, the present disclosure relates to a method of communicating in a medical system/network.