GB 4943-2001 Safety of information technology equipment
IEEE 1588-2008 Precision clock synchronization protocol for networked measurement and control systems*, 2023-12-09 Update
YD/T 1011-1999 Technology requirement and test method of stand alone synchronization equipment in digital synchronization network
YD/T 1012-1999 Node clock set of digital synchronization network and its timing feature
YD/T 1082-2000 Technical requirements for the protection against overvoltages and overcurrents and the suitability in basic environment on access network equipment
YD/T 1595.2-2007 Requirements and Measurement Methods of Electromagnetic Compatibility for 2GHz WCDMA Digital Cellular Mobile communication System.Part 2: Base Station and Ancillary Equipment
YD/T 1552-2009 history
2009YD/T 1552-2009 2GHz WCDMA Digital Cellular Mobile Telecommunication Network Technical Specification of RAN Equipment(Phase 3)
2007YD/T 1552-2007 Technical Specification for 2GHz WCDMA Digital Cellular Mobile Communication Network RAN Equipment (Phase Ⅰ)