Summary

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 ITU‑T G.709.5 adds a new FOIC1.2-RS optical short reach interface.

Corrigendum 1 makes the following changes:

· Clause 13.5.2. Corrects a typographical error in the NOTE.

· Clause 14.5.2. Aligns the lane skew tolerance requirement with the IEEE 802.3df value.

· Figure 13-5. Corrects a typographical error in the text label beside the FEC encode #1.