The "Engineering Design Specifications for Long-distance Optical Cable Wavelength Division Multiplexing (WDM) Transmission Systems" (hereinafter referred to as "this specification") is applicable to the engineering design of new single-fiber unidirectional long-distance WDM transmission systems carrying SDH signals at rates below 10Gbit/s. For reconstruction and expansion of single-fiber unidirectional and single-fiber bidirectional long-distance WDM transmission system projects, refer to relevant specifications.
2006YD/T 5092-2005 Specifications of Engineering Design for Long-Distance Optical Fiber Cable Wavelength Division Multiplexing Transmission System
2000YD/T 5092-2000 Interim Provisions of Engineering Design for the Long-Distance Optical Fiber Cable Wavelength Division Multiplexing Transmission System
YD/T 5092-2005 Specifications of Engineering Design for Long-Distance Optical Fiber Cable Wavelength Division Multiplexing Transmission System was changed to YD 5092-2014 Design Specification for Wavelength Division Multiplexing(WDM) Optical Fiber Transmission Engnieering.