YD/T 1302-2004.National No.7 signalling system technical requirement - GSM mobile telephone user part (MTUP). 1范围 YD/T 1302规定了900/1800MHzTDMA数字蜂窝移动通信系

YD/T 1301-2004.Test method for access network - 26GHz Local Multi-point Distribution System (LMDS). 1范围 YD/T 1301规定了工作在26CHz频段的本地多点分配系统(LMDS)的检验方法，包括中

YD/T 1289.2-2003.Synchronous Digital Hierarchy (SDH) transport network management system technical specification part 2:Element Management System (EMS

YD/T 1299-2004.Technical requirements of SDH network performance - jitter and wander。 1范围 YD/T 1299规定了在SDH网络节点接口(NNI) 上能够控制的抖动和漂移的参数及相关指标。 YD/T 1299适用

YD/T 1297-2003.General technical requirements for P telephony media gateway controller. 1范围 YD/T 1297规定了IP电话媒体网关控制器在基于H.323协议的IP电话网中的位置、功能、通信接口、协议及其性能

YD/T 1296-2003.Technical specification for public P voice switch. 1范圈 YD/T 1296规定了公用IP语音交换机设备在功能、业务、接口、性能、信令、网管、计费、编号和寻址、同步、维护、电源、环境等方面的要求。 YD/T 1296适

YDT 1289.3-2003.Synchronous Digital Hierarchy (SDH) transport network management system technical specification part 3:Network M anagement System (NMS

YD/T 1272.5-2009.Optical Fiber Connector Part 5:type MPO. 1范围 YD/T 1272.5对MPO型光纤活动连接器进行定义和分类;规定了其接口的图形、配合面尺寸、光学性能指标要求、标准连接器指标要求、材料、环境及机械性能要求、测量和试验方法、质

YD/T 1289.1-2003.Synchronous Digital Hierarchy (SDH) transport network management system technical specification part 1: basic principle. 1范围 YD/T 128

YD/T 1279-2003.900/1800MHz TDMA Digital Celler Mobile Telecommunication network management interface technical specification - Interface definition ba