M42 通信线路设备 标准查询与下载

ANSI/UL 497A-2004 通信线路的二级保护器

The requirements cover secondary protectors for use in single- or multiple-pair-type communications circuits used in the protected side of telecommunications networks that have an operating rms voltage to ground less than 150 volts and installed or used in accordance with the National Electrical Code, NFPA 70.

Standard for Safety for Secondary Protectors for Communications Circuits (Proposal dated June 27, 2008)

ANSI/UL 497C-2004 同轴通信电路用保护器

The requirements cover protectors for use on coaxial cable circuits consisting of single or multiple air gap arresters, gas tube arresters, or solid-state arresters, with or without fuses or other current-limiting devices.

Standard for Safety for Protectors for Coaxial Communications Circuits (Proposal dated June 27, 2008)

ANSI/UL 1863-2004 通信用安全标准.电路附件

To address and resolve the comments received in response to UL's Subject 1863 proposal bulletin dated 5/19/03, proposing revisions to the 3rd Edition of UL 1863, and balloting the body of the standard for ANSI approval.

Standard for Safety for Communications - Circuit Accessories (Proposal Dated June 6, 2008)

ITU-T G.108 AMD 1 SPANISH-2003 E模型的应用:规划指南.1号修正案:1号新附录:发话人回声和绝对延迟的相互关系和相互作用.系列G:传输系统和媒体数字系统和网络.国际电话连接和电路.一般定义

This appendix is intended to provide guidance on the relationship between and interaction of talker echo and absolute delay by means of graphs which result from calculations with the E-model as contained in ITU-T Rec. G.107 (03/2003).

Application of the E-model: A planning guide Amendment 1: New Appendix I: The relationship between and interaction of talker echo and absolute delay SERIES G: TRANSMISSION SYSTEMS AND MEDIA DIGITAL SYSTEMS AND NETWORKS International telephone connections

YD/T 838.4-2003 数字通信用对绞/星绞对称电缆.第四部分:主干对绞电缆

Multicore and symmetrical pair/quad cables for digital communications Part 4:Riser cables

YD/T 838.3-2003 数字通信用对绞/星绞对称电缆.第三部分:工作区对绞电缆

Multicore and symmetrical pair/quad cables for digital communications Part 3:Work area wiring

YD/T 838.2-2003 数字通信用对绞/星绞对称电缆.第二部分:水平对绞电缆

Multicore and symmetrical pair/quad cables for digital communications Part 2:Horizontal floor wiring

YD/T 838.1-2003 数字通信用对绞/星绞对称电缆.第一部分:总则

Multicore and symmetrical pair/quad cables for digital communications Part 1:Generic specification

ITU-T H.611 FRENCH-2003 全业务超高速数字用户环路(VDSL)操作,管理维护和配置方面.系列H:视听和多媒体系统.宽带和三合一的多媒体业务.超高速数字用户环路(VDSL))上的宽带多媒体业务.16号研究组

This Recommendation addresses service provisioning, service assurance, network build and data management requirements for services on an end-to-end Full-Service VDSL platform. It defines operational requirements from an operator perspective that enable the provisioning of bundled services in a reliable way with minimal user intervention and at a cost compatible with mass market deployment. It also gives functional requirements for the Element Management System and the management interfaces of the platform.

Full-Service VDSL Operations Administration Maintenance& Provision aspects SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Broadband and triple-play multimedia services Broadband multimedia services over VDSL Study Group 16

ITU-T H.610 SPANISH-2003 全业务超高速数字用户环路(VDSL).系统结构和用户驻地设备.系列H:视听和多媒体系统.宽带和三合一的多媒体业务.超高速数字用户环路(VDSL)上的宽带多媒体业务.16号研究组

This Recommendation specifies the systemarchitecture (SA) and customer premises equipment (CPE) architecture for the delivery of video, data and voice services across a VDSL access network to an in-home environment, known as a Full Service VDSL network. The Recommendation specifies the SA and CPE architecture at a high level, independent of the underlying broadband physical layer transport mechanism. VDSL is referenced throughout the Recommendation as the physical layer technology; however, the architectural specifications contained herein could be equally applicable to CPE and Access Networks employing other broadband physical layer technologies.

Full service VDSL System architecture and customer premises equipment SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Broadband and triple-play multimedia services Broadband multimedia services over VDSL Study Group 16

ITU-T H.610 FRENCH-2003 全业务超高速数字用户环路(VDSL).系统结构和用户驻地设备.系列H:视听和多媒体系统.宽带和三合一的多媒体业务.超高速数字用户环路(VDSL)上的宽带多媒体业务.16号研究组

This Recommendation specifies the systemarchitecture (SA) and customer premises equipment (CPE) architecture for the delivery of video, data and voice services across a VDSL access network to an in-home environment, known as a Full Service VDSL network. The Recommendation specifies the SA and CPE architecture at a high level, independent of the underlying broadband physical layer transport mechanism. VDSL is referenced throughout the Recommendation as the physical layer technology; however, the architectural specifications contained herein could be equally applicable to CPE and Access Networks employing other broadband physical layer technologies.

Full service VDSL System architecture and customer premises equipment SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Broadband and triple-play multimedia services Broadband multimedia services over VDSL Study Group 16

ITU-T H.611 SPANISH-2003 全业务超高速数字用户环路(VDSL)操作,管理维护和配置方面.系列H:视听和多媒体系统.宽带和三合一的多媒体业务.超高速数字用户环路(VDSL))上的宽带多媒体业务.16号研究组

This Recommendation addresses service provisioning, service assurance, network build and data management requirements for services on an end-to-end Full-Service VDSL platform. It defines operational requirements from an operator perspective that enable the provisioning of bundled services in a reliable way with minimal user intervention and at a cost compatible with mass market deployment. It also gives functional requirements for the Element Management System and the management interfaces of the platform.

Full-Service VDSL Operations Administration Maintenance& Provision aspects SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Broadband and triple-play multimedia services Broadband multimedia services over VDSL Study Group 16

ITU-T M.3017 SPANISH-2003 混合电路/分组网络的综合管理框架.系列G:电信管理网和网络维护.国际传输系统.电话电路.传真电报和租用电路.电信管理网络

This recommendation describes the environment in which integrated management of Hybrid Circuit/Packet Networks (including ATM-, IP-, and Ethernet-based networks) must operate.

Framework for the integrated management of hybrid circuit/packet networks SERIES M: TMN AND NETWORK MAINTENANCE: INTERNATIONAL TRANSMISSION SYSTEMS TELEPHONE CIRCUITS TELEGRAPHY FACSIMILE AND LEASED CIRCUITS Telecommunications management network Study Gro

ITU-T M.3017 FRENCH-2003 混合电路/分组网络的综合管理框架.系列G:电信管理网和网络维护.国际传输系统.电话电路.传真电报和租用电路.电信管理网络

This recommendation describes the environment in which integrated management of Hybrid Circuit/Packet Networks (including ATM-, IP-, and Ethernet-based networks) must operate.

Framework for the integrated management of hybrid circuit/packet networks SERIES M: TMN AND NETWORK MAINTENANCE: INTERNATIONAL TRANSMISSION SYSTEMS TELEPHONE CIRCUITS TELEGRAPHY FACSIMILE AND LEASED CIRCUITS Telecommunications management network Study Gro

YD/T 1254-2003 接入网技术要求—基于时分双工的以太数字用户线系统 (TDD-EDSL):可变长度帧传送模式

本标准规定了基于时分双工方式采用可变长度帧传送模式的以太数字用户线系统的接口、功能、性 能、网管和协议等要求。 本标准适用运行于接人网现有钢线设施和用户驻地布线系统中混合线规的金属双绞线上的采用时分双 工技术，在一对双绞线上支持分组数据业务和话带业务运行的设备。

Access network technical specification —TDD based Ethernet Digital Subscriber Line system (TDD-EDSL):variable length frame transmission mode

TIA-873.003-2003 CDMA2000扩频系统的IP网－IP多媒体子系统－IP多媒体呼叫模式－进程2

TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in se

All-IP Core Network Multimedia Domain ?IP Multimedia Subsystem ?IP Multimedia Call Model: Stage 2

ITU-T P.380-2003 听筒的电声测量

This Recommendation provides testing methods for headsets using the Head And Torso Simulator. The Recommendation addresses the following topics: selection of artificial ears, classification of headsets, positioning of headsets on HATS, test repeatability

Electro-acoustic measurements on headsets Study Group 12

ITU-T Q.50.2 FRENCH-2002 互联网协议(IP)网上的国际交换中心(ISC)和包括压缩/解压缩控制在内的数字电路倍增设备(DCME)之间的信令.系列Q:交换和信令.国际自动和半自动操作.电路倍增设备的电路信令

This Recommendation describes a signalling interface between an International Switching Centre (ISC) and a Digital Circuit Multiplication Equipment (DCME) with a built-in device controller that allows a per call control of various functions in the DCME in real time. It is based on the interface described in ITU-T Rec. Q.50 [1]. In addition to the functions described in [1] that can be controlled by the switch, the compression/decompression function in the DCME can also be controlled over an IP network.

Signalling between International Switching Centres (ISC) and Digital Circuit Multiplication Equipment (DCME) including the control of compression/decompression over an IP network

ITU-T Q.50.2 SPANISH-2002 互联网协议(IP)网上的国际交换中心(ISC)和包括压缩/解压缩控制在内的数字电路倍增设备(DCME)之间的信令.系列Q:交换和信令.国际自动和半自动操作.电路倍增设备的电路信令

This Recommendation describes a signalling interface between an International Switching Centre (ISC) and a Digital Circuit Multiplication Equipment (DCME) with a built-in device controller that allows a per call control of various functions in the DCME in real time. It is based on the interface described in ITU-T Rec.Q.50 [1]. In addition to the functions described in [1] that can be controlled by the switch, the compression/decompression function in the DCME can also be controlled over an IP network.

Signalling between International Switching Centres (ISC) and Digital Circuit Multiplication Equipment (DCME) including the control of compression/decompression over an IP network

YD/T 1174-2001 通信电缆--局用同轴电缆

Telecommunication Cable -- Central Office Coaxial Cable