Train control and management systems (TCMS)

TCMS handle vital control and management of multiple subsystems inside the train/consist and serve as the interface to the train driver, staff, and wayside services. In recent years, the need for a fast and reliable Ethernet network capable of handling a high bandwidth in public transit has increased significantly. As TCMS are crucial for operating the vehicles in traffic, it becomes vital to ensure that they always work and have communication with all other systems inside the train. The critical operational and safety-related services inside TCMS place high demands on the data communications network. Also, the difficult operational conditions on-board trains create a unique set of requirements and challenges. Westermo has developed robust data communications products specifically for solving common challenges for applications, such as inter-consist communication, communication with cloud services, and redundant communications paths within the TCMS in public transit.


Westermo provides products and solutions for most networking applications within the rail industry. Our extensive product range and deep understanding of rail applications ensures that we can offer the best solution for your needs.

 Train control and management applications 

IEC 61375 compliant redundant train wide gigabit Ethernet backbone

The Westermo Viper TBN family offers IEC 61375 compliant automatic network inauguration, with gigabit Ethernet backbone support for coupling multiple consist into an operational train. The Viper TBN family is operability tested with other vendor switches compliant to IEC 61375.

  • Fully EN50155 compliant
  • Redundant Gigabit Ethernet backbone links
  • IEC 61375 compliant with Railway NAT (1-1 NAT)

IEC 61375 is a standardization initiative for critical inter-consist communication to allow coupling of different manufacturers consists together. The result shall be an automatically inaugurated network configuration that allows end devices trainwide communication capabilities. The Westermo Viper TBN is developed according the IEC 61375 requirement and support an Ethernet Backbone configuration with R-NAT (Railway NAT) between all consist forming the train. It supports both multiple consist and backbone network configurations to allow operational (TCMS) and multimedia (CCTV/PIS) to share the same operational train view.

The Viper TBN is controlled from TCMS using communication according Train Real-time Data Protocol (TRDP)

Kenny Nania

Sales, Westermo North America

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