KS X ISO/IEC 9314-4:2001 Information technology-Fibre distributed data interface(FDDI)-Part 4:Single-mode fibre physical layer medium dependent(SMF-PMD)
2001KS X ISO/IEC 9314-4:2001 Information technology-Fibre distributed data interface(FDDI)-Part 4:Single-mode fibre physical layer medium dependent(SMF-PMD)