Method of the method of a network of telecommunication optical ring as well as communication node, communication node has amplification and hub of the traffic of a network of telecommunication secured optical ring

摘要

The secure optical telecommunications traffic method has a traffic concentrator (1) and a communications node (N3) connected by an optical fibre (2). The concentrator transmits optical signals. The concentrator uses the same fibre in one direction whilst the network is in a state of normal transmission and in the opposite direction whilst in the emergency state.