2014YD 5095-2014 Design Specification for Synchronous Digital Hierarchy (SDH) Optical Fiber Transmission System Project
2006YD/T 5024-2005 Design Specification for SDH Local Network Optical Fiber Cable Transmission Project
1996YD 5024-1996 SDH Optical Fiber Cable Trunk Transmission Project Designing Standard for Local Telephone Network
YD 5024-1996 SDH Optical Fiber Cable Trunk Transmission Project Designing Standard for Local Telephone Network was changed to YD/T 5024-2005 Design Specification for SDH Local Network Optical Fiber Cable Transmission Project.