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PoE switches for rail applications

PoE switches for rail applications To meet the growing demand for communication networks on-board railway rolling stock, Westermo has introduced two compact and rugged Power-over-Ethernet (PoE) switches that support video, LCDs and wireless LAN access points. The new devices further enhance Westermo's innovative IP Train concept, which delivers a complete Ethernet switch and routing solution to provide a robust network infrastructure for the creation of intelligent trains.

The Viper-112-P8 and Viper-212-P8 twelve-port (8 PoE and 4 standard Ethernet) managed switches, support the IEEE 802.3at 'plug-and-play' PoE communications standard. Specifically designed to meet the full requirements of the on-board rail vehicle market, the Viper switches deliver improved levels of reliability and simplified network design, installation and maintenance. On-board rolling stock applications present one of the toughest environments for any electronic device.

The Viper series is designed and manufactured to exceed the EN 50155 on-board railway standard for electronic equipment, which encompasses not only EMC requirements, but also shock, vibration, extended temperature range and humidity. The switches have also been designed to achieve the highest mean time between failures of up to 448 000 hours (MIL-C217F2), ensuring the extremely long-term and reliable field operation that is expected within the railway industry.

The Viper switches' WeOS operating system provides an extensive suite of IP networking standards allowing resilient and flexible networks to be created. The operating system is able to detect any rail car position changes, rotations and additions, and then compensate for such changes in the network without any manual reconfiguration. To ease installation and maintenance, Viper switches and any connecting devices can be configured with identical IP addresses in each carriage. This simplifies the overall IP plan and standardises configurations.
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