December 31, 2015, Beijing, China – Kyland’s Aquam8512A-1U & Aquam8012A-1U series EN50155 switches have been successfully deployed in the Passenger Information System (PIS system) in the city of Wuhan, Hubei, China on the Wuhan Subway Line 6. The longest subway line under construction until 2017, the Wuhan Subway Line 6 is 35.95km long starting from the Zhuankou Development Zone to the Dongxihu District. The entire line is underground and runs under the Han River. The network carries a wide range of data including, video, voice and other communications supporting ring redundancy with millisecond recovery time. Onboard switches are under constant vibration and need to meet EMC requirements for the rail transportation industry.  80 Aquam8512A-1U and 160 Aquam8012A-1U were deployed on the Wuhan Subway Line 6. The Gigabit EN50155 layer 3 and layer 2 switches include 2 Gigabit uplinks and 8 10/100Base-TX M12 ports supporting simultaneous wire-speed forwarding packet forwarding delay of less than 5 microseconds. 1M switching buffer ensures zero packet loss of the concurrent video traffic. The switches support IGMP, GMRP multicast functions optimizing bandwidth usage, 802.1p, DSCP service quality, and CCTV real time video. The Aquam8512A-1U and Aquam8012A-1U with a wide power supply range from 40 to 160VDC support DRP (IEC62439-6) high performance redundant protocol and a recovery time of less than 20ms adhering to EN50155 and EN50121 rail industry standards. 

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