The first standard for optical FEC, employed in both 2.5G and 10G networks, was the Reed-Solomon (RS) block code.
ມາດຕະຖານທໍາອິດສໍາລັບ FEC optical, ທີ່ໃຊ້ໃນເຄືອຂ່າຍ 2.5G ແລະ 10G, ແມ່ນລະຫັດບລັອກ Reed-Solomon (RS).