共找到 208 条与 数字通信设备 相关的标准,共 14 页
本标准规定了34368kbit/s采用正码速调整的三次群数字复用设备的技术要求和测试方法。 本标准适用于数字传输系统中使用的工作在34368kbit/s采用正码速调整的三次群数字复用设备。
Performance and test methods of the thirdorder digitalltiplex equipment operating at 3468 kbit/sand using poive justification
本标准规定了同轴电缆数字线路系统进网时必须具备与统一的基本性能和接口特性要求。 本标准主要适用于在0.7/2.9、1.2/4.4、2.6/9.5mm同轴电缆上传输2048kbit/s系列信号的数字线路系统。
Performance requirements for digital line systems on coaxial pair cables used in telecommunication network
本标准规定了对称电缆数字线路系统进网时必须具备与统一的基本性能和接口特性要求。 本标准主要适用于对称电缆线对上传输2048kbit/s系列信号的数字线路系统。
Performance requirements for digital line systems on symmetric pair cables used in telecommunication network
本标准规定了电缆数字段在电信网中使用时必须达到的基本性能和接口特性要求。这些要求是针对假设参考数字段提出的。 本标准适用于传输2048kbit/s系列信号的各种电缆数字线路系统组成的数字段。
Performance requirements for digital sections of metallic cables used in telecommunication network
本标准规定了60路PCM/ADPCM编码转换设备的接口特性、信令传输、定时同步、监测、维护运用以及其它实现60路编码转换设备所特有的技术要求。 本标准适用于公用网中使用的60路PCM/ADPCM编码转换设备。专用网中使用的60路PCM/ADPCM编码转换设备也应参照采用本标准。
Technical requirements for a 60-channel PCM/ADPCM transcoder equipment
复用转换设备(TMUX)是将频分复用信号转换为相应的PCM复用信号,并在相反传输方向完成反变换功能的设备,根据其模拟接口是对应FDM的基础超群还是基础基群可分为s型与P型两类。 本标准规定了60路复用转换设备的接口特性、通路性能、定时同步方式、信令变换要求及维护运用等方面的技术条件。 本标准适用于在公用网和专用网上运用的以各种方式实现的S型和P型60路复用转换设备。
Technical requirements for TDM/FDM 60-channel transmultiplexing equipment
本标准适用于在载波话路上固定安装的75波特、报路间隔180Hz调频音频电报机(以下简称电报机)。
Specification and measuring method of frequency-modulated voice-frequency telegraph set for a modulation rate of 75 Bauds with channels spaced at 180 Hz
本标准适用于普通磁石式电话机,可作为设计、生产、使用部门鉴定,仲裁产品质量的依据.本标准未包括的特殊要求,在产品技术条件中规定。
Technical requirements for magnet/ telephone
本标准适用于普通共电、自动电话机,可作为设计、生产、使用部门鉴定、仲裁产品质量的依据。
Technical requirements for common battery telephones and automatic telephones
LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); FDD repeater radio transmission and reception (V14.0.0; 3GPP TS 36.106 version 14.0.0 Release 14)
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Optimal media routeing within the IP Multimedia Subsystem (IMS); Stage 3 (V14.0.0; 3GPP TS 29.079 version 14.0.0 Release 14)
LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); FDD repeater conformance testing (V14.0.0; 3GPP TS 36.143 version 14.0.0 Release 14)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 3: Class D DSC (V1.2.1)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 5: Handheld VHF Class H DSC (V1.2.1)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 2: Class A/B DSC (V1.4.1)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 4: Class E DSC (V1.2.1)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 1: Common requirements (V1.4.2)
Technical characteristics and methods of measurement for equipment for generation@ transmission and reception of Digital Selective Calling (DSC) in the maritime MF@ MF/HF and/or VHF mobile service; Part 6: Class M DSC (V1.1.1)
IMT cellular networks; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU; Part 15: Evolved Universal Terrestrial Radio Access (E-UTRA FDD) Repeaters (V11.1.2)
IMT cellular networks; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU; Part 11: CDMA Direct Spread (UTRA FDD) Repeaters (V11.1.2)
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