2010YD 5121-2010 Acceptance Specifications for Telecommunication Cable Line Engineering
2006YD/T 5138-2005 Acceptance Specification for Local communication Line Project
1997YD 5051-1997 Acceptance standard for local Nnetwork Communication lines engineering
YD 5051-1997 Acceptance standard for local Nnetwork Communication lines engineering was changed to YD/T 5138-2005 Acceptance Specification for Local communication Line Project.