YD 1268-2003.The safety specification and test method for lithium batteries and charger. 1范围 YD 1268规定了移动通信手持机锂电池的安全性能要求，包括正常使用及可能发生误操作时的安全性要求和试验方法。 Y

YD/T 1270-2003.Contactless compensatory A?C voltage stabilizer. 1范围 YD/T 1270规定了无触点补偿式交流稳压器的技术要求、试验方法、检验规则和标志、包装、运输、贮存。 YD/T 1270适用于采用低压电器及电子器件组成的无触点补

YD/T 1271-2003.Ring generator for telecommunication equipment. 1范围 YD/T 1271规定通信用模块式铃流信号发生器的技术要求、试验方法、检验规则和包装贮运。 YD/T 1271适用于通信用模块式铃流信号发生器(以下简称铃流模块)。

YD/T 1273-2003.Technical specification for terminal equipment of optical Wavelength Division Multiplexing (WDM) - 16x10Gb/s and 32x10Gb/s parts. 1范園 Y

YD/T 1274-2003.Technical specification for optical Wavelength Divison Multiplexing (WDM) system - 160x10Gb/s and 80x10Gb/s part. 1范围 YD/T 1274规定了以10Gb

YD/T 1283-2003.900/1800MHz TDMA digital cellular mobile communication network equipment test requirements for Unstructured Supplement Service Data(USS

YD/T 1283-2003.900/1800MHz TDMA digital cellular mobile communication network equipment test requirements for Unstructured Supplement Service Data(USS

YD/T 1284-2003.The technical requirement for quality of communication for inter - public telecom network - call completion rate and post dailling dela

YD/T 1286-2003.Technical specification of supplement services for IP telephony. 1范围 YD/T 1286给出了15种IP电话网上可开展的补充业务的描述、计费方式和业务流程，并以呼叫前转为例给出多种实现方案。 2规范性引

YD/T 1285-2003.The test method for quality of communication for inter - public telecom network - call complete ratio and post - dialling delay for tel