The English version of IEC 61375 Part 3-4 delves into the intricacies of the Ethernet train backbone system. This standard document provides a detailed framework for the implementation and operation of Ethernet networks tailored to the unique requirements of train communication systems. Covering essential aspects such as network architecture, communication protocols, and data exchange mechanisms, it serves as a comprehensive guide for ensuring the seamless performance of Ethernet train backbones. Adherence to these standards is pivotal for establishing a robust and dependable connectivity infrastructure in the railway industry.