2020BS EN 50159:2010+A1:2020 Railway applications. Communication, signalling and processing systems. Safety-related communication in transmission systems
2010BS EN 50159:2010 Railway applications. Communication, signalling and processing systems. Safety-related communication in transmission systems
2001BS EN 50159-2:2001 Railway applications. Communication, signalling and processing systems. Part 2: Safety related communication in open transmission systems