YD/T 1850-2009.2GHz TD-SCDMA Digital Cellular Mobile Telecommunication Network Test Method of HSUPA RAN. 1范围 YD/T 1850规定了TD-SCDMA在引入高速上行分组接入(HSUPA)功能后

YD/T 1248.3-2004.Short message service based on PSTN Technique requirements of short message centre. 1范围 YD/T 1248.3规定了短消息传送的处理流程，短消息中心(SMC)内传送短消息的各层协

YD/T 1248.2-2003.Short Message Service Based on PSTN Part 2 :Technical Requirements of Transmission Protocol between Short Message Terminal Equipment

YD/T 1248.1-2003.Short Message Service Based on PSTN Part 1 : Technical Requirements and Testing Methods of Short Message Terminal Equipment. 1范围 YD/T

YD/T 1247-2002.Technical condition of optical transmitter module for optical fiber analog transmission. 1范围 YD/T 1247规定了光纤模拟传输用光发射组件的技术要求、测试方法、检验规则、标志

YD/T 1246-2002.Test method of ATM switch equipment. 1范围 YD/T 1246规定了对ATM交换设备的测试方法，其范围涵盖了物理接口及物理层功能、ATM层一致性、整机能力、网管能力、AAL1与AAL5测试、帧中继与ATM互通测试、NNI信令测试及网

YD/T 1245-2002.Electronic commercial application level protocol under mobile environment(non shopping type). 1范围 YD/T 1245规定了在移动环境中实施非购物型电子商务应用层的协议，适用

YD/T 1244-2002.Requirement and measurement methods of electromagnetic compatibility for xDSL equipment. 1范围 YD/T 1244规定了xDSL系列设备的电磁兼容性要求及测量方法。 YD/T 12

YD/T 1243.3-2002.Technical specification for media gateway equipment - integrated access media gateway. 1范围 YD/T 1243.3规定了综合接入媒体网关设备的功能、接口、控制协议、信令、网管、

YD/T 1243.2-2002.Technical specification for media gateway - ATM trunk equipnent. 1范围 YD/T 1243.2规定了ATM中继媒体网关设备的功能、接口、控制协议、网管、性能指标、定时与同步、软件与硬件、供电以及环境等