Abstract: A transmission system for transmitting communications data from at least one data source to a plurality of terminals via a distributor, includes terminals connected in series in a terminal chain, via an input port and an output port. The first and last terminals in the chain are directly interconnected with a shunt connection in such a way that the communications data in the chain of terminals is transmitted from terminal to terminal, between the first and the last terminals of the chain if all the terminals are interconnected, and, if the connection between the terminals in the terminal chain is interrupted, the communications data from the first terminal of the chain of terminals is transmitted in the terminal chain up to the inactive terminal and the communications data from the last terminal is transmitted in the terminal chain up to the inactive terminal.

Abstract: The invention relates to a transmission system for the transmission of communications data from at least one data source (1) to a plurality of terminals (2.1, 2.2, . . . , 2.n) in a passenger aircraft via a distributor (3b) that is connected to the data source (1). The terminals are connected in series to a chain of terminals (6), via an input port (4) and an output port (5). According to the invention, in order to make the transmission system fault-tolerant, the first (2.1) and the last (2.n) terminals in the chain (6) are directly interconnected with a shunt connection (7) in such a way that the communications data in the chain of terminals (6) is transmitted from terminal to terminal, between the first (2.1) and the last terminals (2.n) of the chain if all the terminals are interconnected, and, if the connection between the terminals in the terminal chain (6) is interrupted, the communications data from the first terminal (2.