YDC 003-2001.General Technical Requirements for Softwsitch. 1范围 YDC 003性技术文件规定了软交换在网络中的位置、网络框架结构、功能、...
YD通讯标准
YD通讯标准
YD通讯标准
YDC 004-2002 固定电话用户选择不同长途网络对交换机的技术要求
YDC 004-2002.Technical Specification of SPC for Fixed Telephone Subscribers to Select different long...
YD通讯标准
YD/T 5138-2005 本地通信线路工程验收规范
YD/T 5138-2005.Acceptance Specifications for Local Communication Line Project. 1总则 1.0.1 YD/T 5138适用...
YD通讯标准
YD/T 5144-2007 自动交换光网络(ASON)工程设计暂行规定
YD/T 5144-2007.Provisional Specifications of Engineering Design for Automatically Switched Optical N...
YD通讯标准
YD 5148-2007 架空光(电)缆通信杆路工程设计规范
YD 5148-2007.Design Specifications for Pole Line of Optical(Copper) Cable Communication Engineering....
YD通讯标准
YD/T 5151-2007 光缆进线室设计规定
YD/T 5151-2007.Design Specification of Optical Fiber Cable in the Leading in Room. 1总则 1.0.1YD/T 515...
YD通讯标准
YD/T 5152-2007 光缆进线室验收规定
YD/T 5152-2007.Acceptance Specification of Optical Fiber Cable in the Leading in Room. 1总则 1.0.1YD/T...
YD通讯标准
YD 5123-2005 长途通信光缆线路工程施工监理
YD 5123-2005.Provisional Specification of Engineering Supervisionfor Long Haul Optical Fiber Cable L...
YD通讯标准
YD 5125-2005 通信设备安装工程施工监理
YD 5125-2005.Provisional Supervision Speeification of Installation Engincering for Conmunication Equ...
YD通讯标准
YD 5126-2005 通信电源设备安装工程施工监理暂行规定
YD 5126-2005.Provisional supervision Specification of installation Engineering for Telecommunication...
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