Summary

This Recommendation describes the Forward Error Correction (FEC) functions that have higher‑correction ability than RS(255,239) code defined in ITU-T Rec. G.975 for the high bit-rate DWDM submarine cable systems. In Appendix I, super FEC schemes, which have higher-correction ability than RS(255,239) code, are also described. The use of this super FEC function in submarine terminal transmission equipments (TTEs) should not be considered as mandatory.