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编码方法的距离增...
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...
YD/T 1912-2009.Security Technical Requirements and Test Methods for Media Server Based on Softswitch.1范围YD/T 1912规定了软交换网络中媒体服务器设备在通信、可靠...
YD/T 1914-2009.Security Technical Requirements and Test Methods of Application Server Based on Softswitch.1范围YD/T 1914规定了软交换网络中应用服务器设备在业务、通...
YD/T 1927-2009.Technical Requirements for the Softswitch Services Access Control Device.1范围YD/T 1927规定了软交换业务接入控制设备的功能要求、协议要求、接口...
YD/T 1935-2009.Testing Methods for IMS based Group Management Service(Phase 1).1范围YD/T 1935规定了在数字蜂窝移动通信网XDM业务中，聚合代理、共享XDM服务器、...
YD/T 1938.1-2009.Test method for Session Initiation Protocol(SIP) Part 1: Basic Session Initiation Protocol.1范围YD/T 1938.1规定了基本的会话初始协议(SIP) 的测试方法...
YD/T 1969-2009.Intelligent Energy Saving System by Fresh Air for Telecommunication Stations/Sites.1范围YD/T 1969规定了通信局(站)用智能新风节能系统(简称新风系统...
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、...
YD/T 1970.2-2010.Maintenance Requirements of Power Supply for Telecommunication Stations/Sites Part 2: High-voltage/Low-voltage Power Conversion and Distribution System.1范围YD/T ...
