| CPC H01R 25/14 (2013.01) [F21V 21/005 (2013.01); F21S 8/038 (2013.01)] | 15 Claims |

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1. A support rail system (10) comprising:
at least one support rail (100) for fastening luminaires (200) and further components (300) to the support rail (100),
contactable electrical lines (120) running within the support rail (100), wherein the electrical lines (120) comprise both a main power supply line (130) and other lines (180), and wherein the other lines (180) comprise one or more of a light communication line (140) for transmitting light communication signals, in particular digital addressable lighting interface (DALI) signals, a low voltage supply line (150), in particular a safety extra low voltage (SELV) line, a non-continuously used supply line (160), in particular an emergency power supply line, a switched supply line, and a different data line, in particular an audio signal line,
a data connection (171) for transferring further data signals (D), and
a data transceiver (20) for modulating the further data signals (D) onto at least one of the other lines (180) such that this at least one other line is a line (181) used to transmit the further data signals (D).
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