YD/T 1471-2006.Service Technical Requirements for Layer 2 Virtual Private Network (VPN) Based on IP. 1范围 YD/T 1471规定了在IP网络上开放二层VPN业务的技术要求和方法，包括业务类型、参考

YD/T 1470-2006.Technical Requirements of Telephony Routing over IP (TRIP). 1范围 YD/T 1470规定了IP电话路由协议(TRIP )的技术要求，包括协议基本操作、协议消息格式、协议字段属性、协议报文处理和协议有限状态机等

YD/T 1532-2006.Test Specification for IAD Based on Softswitch. 1范围 YD/T 1532规定了基于软交换的综合接人设备(IAD)的基本功能测试、协议测试、接口测试、语音业务测试、数据业务测试、性能测试、OAM测试、硬件项目测试和环境测试

YD/T 1531-2006.Test Method for Access Network Equipment - Passive Optical Network Based on Ethernet(EPON). 1范围 YD/T 1531规定了传输速率为千兆比的基于以太网方式的的无源光网络( EP

YD/T 1530-2006.Technical Requirements For Access Network Extended bandwidth 2nd-generation Asymmetric Digital Subscriber Line (ADSL2+). 1范围 YD/T 1530规

YD/T 1460.3-2006.Telecommunication microduct optical fibre cables and fibre units for installation by blowing Part 3:Microducts,microduct bundles and

YD/T 1474-2006.Technical Requirements of Multi-sesvice Transport Platform (MSTP) Based on SDH - Embed'ded with MPl.S Functian. 1范围 YD/T 1474规定了基于SDH的M

YD/T 1473-2006.Technical Requirements of V5.2 User Adaptation Layer. 1范围 YD/T 1473主要规定了V5.2用户适配层协议V5UA在SS/MGC(软交换/媒体网关控制器)和SG(信令网关)之间的实体功能分配、客户机服务器模式、

YD/T 1472-2006.Technical Requirements for the Adaptation L ayer of ISDN Signalling Interworking with IP. 1范围 YD/T 1472规定了ISDN Q.921用户适配层协议(IUA)所提供的业务、

YD/T 1456.1-2006.The Test Method of 900/1 800MHz TDMA Digital Cellular Mobile Telecommunication Network Equipment Service Switching Point(SSP)( CAMEL3