YD 5019-1996.Temporary Specifications of Engineering Design for Synchronous Digital Hierarchy (SDH) Microwave Relay Telecommunication System.1总则1.0.1YD 5019适用于我国新建的...
YD 5041-1997.Interim Provisions on Engineering Design for Service Network for Fax Store and Forward.1总则1.0.1 为了加强对传真存储转发设备安装工程的技术管理，使...
YD/T 1596-2007.Technical Specification and Testing Methods for Repeater Used in 2GHz cdma2000 Digital Cellular Mobile Communication Network.1范围YD/T 1596规定了2GHz cdma2000数字...
YD/T 1547-2007.Technical Specification for 2GHz WCDMA Digital Cellular Mobile Communication Network User Equipment (Phase I).1范围YD/T 1547主要规定了第三代移动通信WCDM...
YD/T 1512-2007.Testing Methods for 2GHz TD-SCDMA/WCDMA CS Video Telephony Service Terminal.1范围YD/T 1512规定了2GHzTD-SCDMA/WCDMA数字蜂窝移动通信网电路域可视电话业...
YD/T 1511-2007.Technical Specification for 2GHz TD-SCDMA/WCDMA CS Video Telephony Service.1范围YD/T 1511规定了TD-SCDMA/WCDMA数字蜂窝移动通信网电路域可视电话业务...
YD/T 1510-2007.Testing Methods for Nc interface between MSC Servers of 2GHz TD-SCDMA/WCDMA Mobile Communication Network (Phase I).1.范围YD/T 1510规定了2GHz TD-SCDMAWCDMA移动软...
YD 5026-1996.Installation and design standard for cabling duct in the transmission room of long haul telecommunication.1总则1.0.1《长途通信传输机房铁架、槽道安装设计...
YD 5002-1994.Design Standard for Fire Protection of Posts Communications Building.1总则1.0.1为了保障邮电建筑中邮电设备、 邮件以及人身的安全,在设计中贯彻...
YD 5021-1996.Provisional Standards of SDH Engineering Design for Long-Distance Optical Fibre Cable Transmission Project.1总则1.0.1适用于新建及改、 扩建SDH长途光缆传输...
