ITU-T G.108-1999 E模型的应用:规划指南 Application of the E-Model: A Planning Guide Series G: Transmission Systems and Media, Digital Syste

pdf标准 ITU-T G.108-1999 E模型的应用:规划指南 Application of the E-Model: A Planning Guide Series G: Transmission Systems and Media, Digital Syste

142 页 0 下载 0 浏览 0 评论 0 收藏 3.0分
温馨提示:当前标准最多只能预览 10 页,若标准超出了 10 页,请下载原标准以浏览全部内容。
ITU-T G.108-1999 E模型的应用:规划指南 Application of the E-Model: A Planning Guide Series G: Transmission Systems and Media, Digital Syste 第 1 页 ITU-T G.108-1999 E模型的应用:规划指南 Application of the E-Model: A Planning Guide Series G: Transmission Systems and Media, Digital Syste 第 2 页 ITU-T G.108-1999 E模型的应用:规划指南 Application of the E-Model: A Planning Guide Series G: Transmission Systems and Media, Digital Syste 第 3 页 ITU-T G.108-1999 E模型的应用:规划指南 Application of the E-Model: A Planning Guide Series G: Transmission Systems and Media, Digital Syste 第 4 页 ITU-T G.108-1999 E模型的应用:规划指南 Application of the E-Model: A Planning Guide Series G: Transmission Systems and Media, Digital Syste 第 5 页
下载标准到电脑,方便使用
还有 5 页未阅读,继续阅读
本标准由 5zbz2018-09-16 14:51:02上传分享

国外分类,ITU,ITU-T(电信标准分局),itu,模型,应用,规划,指南,application,of,the,model,planning,guide,series,transmission,systems,and,media,digital,syste

INTERNATIONAL TELECOMMUNICATION UNION G.108 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (09/99) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS International telephone connections and circuits – General definitions Application of the E-model: A planning guide ITU-T Recommendation G.108 (Previously CCITT Recommendation) ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100–G.199 General definitions G.100–G.109 General Recommendations on the transmission quality for an entire international telephone connection G.110–G.119 General characteristics of national systems forming part of international connections G.120–G.129 General characteristics of the 4-wire chain formed by the international circuits and national extension circuits G.130–G.139 General characteristics of the 4-wire chain of international circuits; international transit G.140–G.149 General characteristics of international telephone circuits and national extension circuits G.150–G.159 Apparatus associated with long-distance telephone circuits G.160–G.169 Transmission plan aspects of special circuits and connections using the international telephone connection network G.170–G.179 Protection and restoration of transmission systems G.180–G.189 Software tools for transmission systems G.190–G.199 INTERNATIONAL ANALOGUE CARRIER SYSTEM GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIERTRANSMISSION SYSTEMS G.200–G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES G.300–G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400–G.449 COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450–G.499 TESTING EQUIPMENTS TRANSMISSION MEDIA CHARACTERISTICS G.600-G.699 DIGITAL TRANSMISSION SYSTEMS TERMINAL EQUIPMENTS G.700–G.799 DIGITAL NETWORKS G.800–G.899 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900–G.999 For further details, please refer to ITU-T List of Recommendations. ITU-T RECOMMENDATION G.108 APPLICATION OF THE E-MODEL: A PLANNING GUIDE Summary The intent of this Recommendation is to demonstrate how the E-Model (described in Recommendation G.107 [3]) can be used in end-to-end transmission planning for a wide range of networks – local, national, multinational and transcontinental. Source ITU-T Recommendation G.108 was prepared by ITU-T Study Group 12 (1997-2000) and was approved under the WTSC Resolution No. 1 procedure on 30 September 1999. Keywords E-Model, end-to-end, interconnection, Internet, network, PBX, planning, quality, speech, terminal, transmission. Recommendation G.108 (09/99) i FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1. In some areas of information technology which fall within ITU-T’s purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. The ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, the ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. ã ITU 2000 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microf

给标准打分
您好可以输入 255 个字符
本站的中文名字叫什么( 答案:找标准 )
评论列表
  • 暂时还没有评论,期待您的金玉良言