YD/T 1954-2009.Characteristics of a Bending Loss Insensitive Single Mode Optical Fibre for the Access Network. 1范围 YD/T 1954规定了B6类接入网用弯曲损耗不敏感单模光纤的几何、光

YD/T 1950-2009.Technical Requirements for Access network - ADSL line Transceiver (ATU-C) In-band Management. 1范围 YD/T 1950规定了局侧不对称数字用户线(ADSL) 线路收发器(AT

YD/T 1949.2-2009.Technical requirements for access network - Gigabit-capable passive optical network (GPON) Part 2: Physical media dependent (PMD) lay

YD/T 1948.3-2010.Technical requirement of ethernet over transport networks Part 3: Ethernet services framework. 范围 YD/T 1948.3规定了以太网业务框架来描述一系列以太网业务的属性

YD/T 1941-2009.Content Switch Test Method. 1范围 YD/T 1941主要规定了具有内容交换功能的以太网交换机设备的测试方法，包括接口特性测试、TCP/IP协议测试、路由协议测试、内容交换功能测试、网络管理功能测试、可靠性测试、操作管理测试、安全性功能测试、

YD/T 1948.2-2009.Technical Requirement of Ethernet over Transport Part 2:Ethernet UNI and Ethernet NNI. 1范围 YD/T 1948.2规定了以太网用户网络接口(UNI)和网络节点接口(NNI)，包

YD/T 1947-2009.Technical Requirement of Physical Layer for Extended Reach Ethernet based on 2D-PAM3 and 4D-PAM5. 1范围 YD/T 1947规定了基于2D-PAM3和4D-PAM5编码方法

YD/T 1945-2009.Test Method of BGP/MPLS VPN. 1范围 YD/T 1945规定了对基于边界网关协议/多协议标记交换的虚拟专用网(BGP/MPLS VPN)进行测试的项目和内容，包括网络功能和业务测试、服务质量测试、性能测试、安全测试及管理测试等。 YD/T 1

YD/T 1943-2009.Technique Requirement for Layer 3 Provider Provisioned Virtual Private Network Service. 1范围 YD/T 1943从客户和运营商的不同角度出发，规定了运营商提供三层虚拟专用网业务的技

YD/T 1970.3-2010.Maintenance requirements of power supply for telecommunication stations/sites Part 3: DC power system. 1范围 YD/T 1970.3规定了通信局(站)直流系统(以

YD/T 1970.2-2010.Maintenance Requirements of Power Supply for Telecommunication Stations/Sites Part 2: High-voltage/Low-voltage Power Conversion and D

YD/T 1970.1-2009.Maintenance Requirements of Power Supply for Telecommunication Stations/Sites Part 1: General Rules. 1范围 YD/T 1970.1规定了通信局(站)电源系统结构组成