1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T I.112TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Appendix I(02/2002) SERIES I: INTEGRATED SERVICES DIGITAL NETWORK General structure Terminology Vocabulary of terms for ISDNs Appendix I: General telecommunication terminology and definitions ITU-T Reco
2、mmendation I.112 Appendix I ITU-T I-SERIES RECOMMENDATIONS INTEGRATED SERVICES DIGITAL NETWORK GENERAL STRUCTURE Terminology I.110I.119 Description of ISDNs I.120I.129 General modelling methods I.130I.139 Telecommunication network and service attributes I.140I.149 General description of asynchronous
3、 transfer mode I.150I.199 SERVICE CAPABILITIES Scope I.200I.209 General aspects of services in ISDN I.210I.219 Common aspects of services in the ISDN I.220I.229 Bearer services supported by an ISDN I.230I.239 Teleservices supported by an ISDN I.240I.249 Supplementary services in ISDN I.250I.299 OVER
4、ALL NETWORK ASPECTS AND FUNCTIONS Network functional principles I.310I.319 Reference models I.320I.329 Numbering, addressing and routing I.330I.339 Connection types I.340I.349 Performance objectives I.350I.359 Protocol layer requirements I.360I.369 General network requirements and functions I.370I.3
5、99 ISDN USER-NETWORK INTERFACES Application of I-series Recommendations to ISDN user-network interfaces I.420I.429 Layer 1 Recommendations I.430I.439 Layer 2 Recommendations I.440I.449 Layer 3 Recommendations I.450I.459 Multiplexing, rate adaption and support of existing interfaces I.460I.469 Aspect
6、s of ISDN affecting terminal requirements I.470I.499 INTERNETWORK INTERFACES I.500I.599 MAINTENANCE PRINCIPLES I.600I.699 B-ISDN EQUIPMENT ASPECTS ATM equipment I.730I.739 Transport functions I.740I.749 Management of ATM equipment I.750I.759 Multiplexing aspects I.760I.769 For further details, pleas
7、e refer to the list of ITU-T Recommendations. ITU-T Rec. I.112/Appendix I (02/2002) i ITU-T Recommendation I.112 Vocabulary of terms for ISDNs Appendix I General telecommunication terminology and definitions Source Appendix I to ITU-T Recommendation I.112 was prepared by ITU-T Study Group 13 (2001-2
8、004) and approved under the WTSA Resolution 1 procedure on 1 February 2002. ii ITU-T Rec. I.112/Appendix I (02/2002) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector
9、(ITU-T) is a permanent organ of ITU. 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 Assembly (WTSA), which meets every fo
10、ur years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, th
11、e 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 ITU draws attention t
12、o the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outsi
13、de of the Recommendation development process. As of the date of approval of this Recommendation, 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 lat
14、est information and are therefore strongly urged to consult the TSB patent database. ITU 2002 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 microfilm, without permission in writing from
15、 ITU. ITU-T Rec. I.112/Appendix I (02/2002) 1 ITU-T Recommendation I.112 Vocabulary of terms for ISDNs Appendix I General telecommunication terminology and definitions A related set of telecommunication terminology and definitions is provided in American National Standard T1.523-2001, Telecom Glossa
16、ry 2000. T1.523-2001 is a Web-based, hyperlinked, search-engine equipped telecommunications terminology standard developed by Committee T1 (Telecommunications). T1.523-2001 provides hyperlinked definitions for more than 8000 telecommunication terms. The definitions are supplemented with clickable gr
17、aphics and a hyperlinked acronym list. The standard uses audio and video clips to enhance selected narrative definitions. Its Web presentation is designed to accommodate access for the disabled. The standard can currently be viewed at the following URL: http:/www.atis.org/tg2k/ In case of difference
18、s or conflicts in the definitions from the reference cited in this appendix and definitions in ITU-T Recommendations, the latter definitions apply. Printed in Switzerland Geneva, 2002 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series B Means of expression: definitions
19、, symbols, classification Series C General telecommunication statistics Series D General tariff principles Series E Overall network operation, telephone service, service operation and human factors Series F Non-telephone telecommunication services Series G Transmission systems and media, digital sys
20、tems and networks Series H Audiovisual and multimedia systems Series I Integrated services digital network Series J Cable networks and transmission of television, sound programme and other multimedia signals Series K Protection against interference Series L Construction, installation and protection
21、of cables and other elements of outside plant Series M TMN and network maintenance: international transmission systems, telephone circuits, telegraphy, facsimile and leased circuits Series N Maintenance: international sound programme and television transmission circuits Series O Specifications of me
22、asuring equipment Series P Telephone transmission quality, telephone installations, local line networks Series Q Switching and signalling Series R Telegraph transmission Series S Telegraph services terminal equipment Series T Terminals for telematic services Series U Telegraph switching Series V Data communication over the telephone network Series X Data networks and open system communications Series Y Global information infrastructure and Internet protocol aspects Series Z Languages and general software aspects for telecommunication systems *22198*
