This specification is applicable to the new construction of local trunking and access lines, as well as the acceptance of expansion, reconstruction and other communication line projects, and may also be implemented by reference.
YD/T 5138-2005 history
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/T 5138-2005 Acceptance Specification for Local communication Line Project was changed to YD 5121-2010 Acceptance Specifications for Telecommunication Cable Line Engineering.