Summary - G.709.5 (2024) Amd. 1 (08/2024) -

Recommendation ITU-T G.709.5 specifies 100G, 200G, 400G and 800G flexible optical transport network (FlexO) short-reach interfaces. This Recommendation specifies the structure using forward error correction (FEC) code with a coding gain suitable for short-reach applications, and references common elements from Recommendation ITU-T G.709.1.
Amendment 1 to Recommendation ITUT G.709.5 adds a new FOIC1.2-RS optical short reach interface.