This specification is the basis for SDH long-distance optical cable transmission system engineering quality inspection, inspection, on-site acceptance, preliminary inspection, and final inspection of the project. It is suitable for new construction projects, expansion and reconstruction projects of SDH long-distance optical cable transmission system, and can be implemented as a reference.
YD/T 5044-2005 history
2014YD 5044-2014 Acceptance Specification for Synchronous Digital Hierarchy (SDH) Optical Fiber Transmission System Engineering
1997YD 5044-1997 Provisional Standards for Check and Accept SDH Equipments Installation of Optical Fibre Cable Transmission Project
YD/T 5044-2005 Acceptance Specification for SDH Long-Haul Transmission Systemof Optical Fibre Project was changed to YD 5044-2014 Acceptance Specification for Synchronous Digital Hierarchy (SDH) Optical Fiber Transmission System Engineering.