33.040.20 传输系统 标准查询与下载

IEC 62037-5:2021 RLV 无源射频和微波器件互调电平测量第5部分:滤波器中无源互调的测量

Passive RF and microwave devices, intermodulation level measurement - Part 5: Measurement of passive intermodulation in filters

IEC 62037-1:2021 RLV 无源射频和微波器件互调电平测量第1部分:一般要求和测量方法

Passive RF and microwave devices, intermodulation level measurement - Part 1: General requirements and measuring methods

ITU-T G.9804.2-2021 高速无源光网络 通用传输会聚层规范

Higher speed passive optical networks - Common transmission convergence layer specification

ITU-T G.9802.1-2021 波分复用无源光网络（WDM PON）：一般要求

Wavelength division multiplexed passive optical networks (WDM PON): General requirements

ITU-T G.9804.1 AMD 1-2021 高速无源光网络 要求；修正案 1

Higher speed passive optical networks - Requirements; Amendment 1

GSO IEC 60728-101:2021 用于电视信号、声音信号和交互服务的有线网络 第101部分：仅加载数字频道的前向路径的系统性能

IEC 60728-101:2016 is applicable to any cable network (including individual receiving systems) distributing only digital channels having in the forward path a coaxial cable output and primarily intended for television and sound signals operating between about 30 MHz and 3 000 MHz. This standard specifies the basic methods of measurement of the operational characteristics of a cable network having coaxial cable outputs in order to assess the performance of these systems and their performance limits.

Cable networks for television signals, sound signals and interactive services - Part 101: System performance of forward paths loaded with digital channels only

GSO IEC 61935-2:2021 平衡和同轴信息技术布线测试规范 第2部分：ISO/IEC 11801 及相关标准中指定的电线

IEC 61935-2:2010 provides methods to ensure compatibility of balanced cords to be used in cabling according to ISO/IEC 11801 and provides test methods and associated requirements to demonstrate the performance and reliability of these balanced cords during their operational lifetime. This International Standard may also be used for providing test methods for assessing the behaviour of other balanced cords. This third edition cancels and replaces the second edition published in 2005. It differs from the second edition in that it covers category 6A to category 7A cords as defined in ISO/IEC 11801.

Specification for the testing of balanced and coaxial information technology cabling - Part 2: Cords as specified in ISO/IEC 11801 and related standards

T/CCSA 320-2021 移动通信终端支持增强现实的技术要求

本标准规定了移动通信终端通过VST(Video See Through)方式支持增强现实的功能和性能要求，包括技术架构、业务流程、硬件要求、功能要求、性能要求和功耗要求。

Technical Requirements of Augmented Reality for Mobile Device

T/CCSA 318-2021 移动智能终端用户体验 软件稳定性技术要求和测试方法

本文件规定了移动智能终端软件稳定性相关的缺陷严重级别分类及缺陷定义；规定了移动智能终端用户体验软件稳定性技术要求和测试方法。

User Experience of Smart Terminal-Technical Requirement and Test Methods for Stability Performance

T/CCSA 319-2021 移动智能终端用户体验 流畅性技术要求和测试方法

本标准规定了移动智能终端用户体验流畅性技术要求和测试方法。包括预置应用响应时间、系统响应时间和滑动流畅性能。

User Experience of Smart Terminal-Technical Requirement and Test Methods for Fluency Performance

ITU-T K.20-2021 安装在电信中心的电信设备对过电压和过电流的抵抗力

Resistibility of telecommunication equipment installed in a telecommunication centre to overvoltages and overcurrents

ITU-T P.57-2021 人工耳

Artificial ears

ITU-T G.709.3/Y.1331.3 Erratum 1-2021 灵活的OTN长距离接口；勘误表 1

Flexible OTN long-reach interfaces; Erratum 1

ITU-T P.808-2021 用众包方法对语音质量进行主观评价

Subjective evaluation of speech quality with a crowdsourcing approach

YD/T 2484-2021 分组增强型光传送网（OTN）设备技术要求

Packet enhanced optical transport network (OTN) equipment technical requirements

ITU-T G.7703-2021 自动交换光网络的架构

Architecture for the automatically switched optical network

ITU-T G.709.4/Y.1331.4 Corrigendum 1-2021 OTU25和OTU50短距离接口；勘误表 1

OTU25 and OTU50 short-reach interfaces; Corrigendum 1

ITU-T K Supplement 24-2021 ITU-T K.20 设置安装在电信中心的电信设备抗雷击能力要求的基本原理

ITU-T K.20 - Rationale for setting resistibility requirements of telecommunication equipment installed in a telecommunication centre against lightning

ITU-T G.989.3-2021 40G 无源光网络（NG-PON2）：传输汇聚层规范

40-Gigabit-capable passive optical networks (NG-PON2): Transmission convergence layer specification

ITU-T G.9806 AMD 2-2021 更高速度的双向、单光纤、点对点光接入系统（HS-PtP）；修正案 2

Higher speed bidirectional, single fibre, point-to-point optical access system (HS-PtP); Amendment 2