1、 Rec. ITU-R V.662-3 1 RECOMMENDATION ITU-R V.662-3 TERMS AND DEFINITIONS (1986-1990-1993-2000) Rec. ITU-R V.662-3 The ITU Radiocommunication Assembly, considering a) that it is desirable to have, in addition to specific terminology texts produced by Study Groups, definitions of the general technical
2、 terms used in Radiocommunication Sector texts; b) that the Radiocommunication Sector has cooperated with the International Electrotechnical Commission (IEC) in the production of the International Electrotechnical Vocabulary (IEV), recommends 1 that administrations and recognized private operating a
3、gencies who are members of the Radiocommunication Sector, as well as the Radiocommunication Bureau, should use as far as possible, technical terms in the field of telecom-munications with the meaning given in the IEV, the plan of which is given in Appendix 1 to this Recommendation; 2 that general te
4、rms common to several Study Groups should be used with the meaning given in Appendix 2 to this Recommendation, which is generally close to the meaning given in the IEV but adapted for Radiocommunication Sector needs. NOTE 1 The definitions given in the IEV Chapters, like those included in Appendix 2
5、, are of a general nature; their purpose is that all Study Groups should use general terms with the same meaning. In certain cases they may be slightly different from more complete definitions prepared, or being prepared, by some Study Groups for their specific needs, but they are not in contradicti
6、on with the latter. These definitions do not replace definitions contained in Recommendations of the ITU Sectors (or in the Radio Regulations (RR), the International Telecommunication Regulations or the ITU Convention or Constitution) which are to be used in their respective fields of application. I
7、t should be noted that a database of terms and abbreviations called SANCHO has been developed in ITU-T. 2 Rec. ITU-R V.662-3 APPENDIX 1 “Telecommunications” Parts of the International Electrotechnical Vocabulary (IEV) The IEV is International Standard IEC 60050; it comprises a great number of parts
8、(formerly chapters), published in separate fascicles. Parts of the 700 series deal with telecommunications. The 700 series parts are as follows: Parts and Sections Status in 2000 701 Telecommunications, channels and networks 1 Forms of telecommunications 2 Channels, circuits and networks 3 Use and o
9、peration of circuits and networks Published in 1988 702 Oscillations, signals and related devices 1 Frequencies 2 Oscillations and waves 3 Pulses 4 Signals; general terms 5 Discrete signals and digital signals; coding 6 Modulation and demodulation 7 Noise and interference 8 Transmission characterist
10、ics and performance; distortion 9 RLinear and non-linear networks and devices Published in 1992 704 Transmission 01 to 08 General aspects of transmission 09 to 12 Analogue transmission 13 to 15 Time division multiplexing 16 to 21 Digital transmission 22 to 26 Pulse code modulation Published in 1993
11、705 Radio waves propagation 1 Essential characteristics of electromagnetic fields and waves 2 Radiation, paths and velocity of electromagnetic waves 3 Electromagnetic properties of propagation media 4 Phenomena related to boundaries of propagation media 5 Tropospheric propagation and effects of the
12、ground 6 Terrestrial ionized media 7 Effects of the ionosphere on radio wave propagation 8 Influence of propagation on radiocommunications Published in 1995 Rec. ITU-R V.662-3 3 Parts and Sections Status in 2000 712 Antennas 1 Basic terms for antennas and antennas assemblies 2 Electrical or radiatin
13、g characteristics of antenna 3 Types of antennas defined by their electrical or radiating characteristics 4 Antennas and antenna elements consisting mainly of radiating conductors 5 Antennas and antenna elements consisting mainly of radiating surfaces and apertures 6 Devices associated with antennas
14、 Published in 1992 713 Radiocommunications: transmitters, receivers, networks and operation 1 Basic terms 2 Radio links and stations 3 Mobile radiocommunications 4 Radiodetermination and radionavigation 5 Other types of radiocommunication 6 Frequencies and channels 7 Modulation and signal processing
15、 8 Transmitters and transceivers 9 Transmission characteristics 10 Radio reception and receivers 11 Radio-frequency noise and interference 12 Radio-frequency networks and operation Published in 1998 714 Switching and signalling in telecommunications 01 General terms 02 to 05 Switching functions and
16、techniques 06 to 14 Switching functions and techniques 15 and 16 Control functions and techniques 17 to 20 Equipment and hardware 21 to 24 Executive software Published in 1992 715 Telecommunication networks, teletraffic and operation 1 Basic terms 2 Resources 3 Calls 4 Times and delays 5 Traffic 6 C
17、ircuit groups 7 Traffic engineering 8 Networks 9 Circuit switched networks 10 Message switched networks 11 Packet switched networks Published in 1996 716 Integrated services digital networks (ISDN) Part 1 General aspects 1 General terms 2 Services 3 Networks 4 Access Published in 1995 4 Rec. ITU-R V
18、.662-3 Parts and Sections Status in 2000 721 Telegraphy, facsimile and data communication 01 Forms of telecommunications using discrete signals 02 to 08 Discrete signals and transmission using discrete signals 09 to 12 Telegraphy and data communication 13 to 15 Facsimile 16 to 19 Telegraph and data
19、networks, switching, operation and sources Published in 1991 722 Telephony 1 General terms 2 Telephone set components 3 Telephone set feeding and signalling 4 Telephone set types 5 Telephone set accessories 6 Telephone networks 7 Telephone exchanges 8 Private telephone systems 10 Telephone calls des
20、cription 12 Local line networks 13 Telephone station usage 15 Transmission performance 16 Measuring apparatus 17 Telephonometry Published in 1992 723 Broadcasting: sound, television, data 1 General terms 2 Common sound/television broadcasting terms 3 Sound broadcasting 4 Television: General terms 5
21、Television: Picture analysis and display video signals 6 Picture quality and impairment 7 Equipment devices used in television 8 Specific terms for colour television systems 9 Cable distribution system 10 Digital television 11 Three-dimensional/stereoscopic television Published in 1997 (Sections 1 t
22、o 9) Published in 1999 (Sections 10 and 11) 725 Space radiocommunications 1 Satellites, spacecraft and orbits 2 Space radiocommunication systems 3 Antennas and beams 4 Transmission Second edition published in 1994 726 Transmission lines and waveguides 01 Transmission line, waveguide and cavity reson
23、ator configurations 02 to 07 Propagation in transmission lines and waveguides 08 to 10 Waveguide connections 11 to 15 Waveguide components 16 to 18 Non-reciprocal effects and devices 19 to 21 Measurements on transmission lines Published in 1982 Rec. ITU-R V.662-3 5 APPENDIX 2 General Terminology of
24、Telecommunications (Terms common to the Radiocommunication Sector and the Telecommunication Standardization Sector) In order to assure that telecommunication terms employed by the ITU Sectors have the same meaning, the general terms used in the texts of different Study Groups together with their def
25、initions, have been collected together. The terms and definitions in this Appendix have been arranged according to subject as follows: 1 Forms of telecommunications. 2 Channels, circuits and networks. 3 Use and operation of circuits and networks. 4 Frequencies and bandwidths. 5 Oscillations and wave
26、s. Administrations and Study Groups are invited to comment on these terms and definitions, and particularly, to forward to CCV their proposals for revision or for alternative applications, accompanied by appropriate justifications. When examining these definitions, it should be borne in mind that Re
27、commendation ITU-R V.573 on radiocom-munication vocabulary contains terms relating more specifically to the Radiocommunication Sector. Parts and Sections Status in 2000 731 Optical fibre communication 1 General concepts 2 Fibre construction and optical characteristics 3 Propagation characteristics 4
28、 Cables 5 Connectors and couplers etc. 6 Optical sources and detectors 7 Measurement techniques 8 Systems Published in 1991 161* Electromagnetic compatibility 1 Basic concepts 2 Waveforms 3 Interference control related terms 4 Measurements 5 Equipment classification 6 Receiver and transmitter terms
29、7 Power control and network impedances 8 Voltage changes and flicker Published in 1990 Amendment 1 published in 1997 Amendment 2 published in 1998 191 Reliability, maintainability and quality of service 1 Dependability Common terms 2 Quality of service in telecommunications 3 Reliability and quality
30、 of service in electric power systems Published in 1990 (Parts 1 and 2) Amendment 1 (Amendment to Part 1 and new Part 3) published in 1999 * Representatives of the ITU-R participated in the Working Group.6 Rec. ITU-R V.662-3 The following Notes should also be taken into account: NOTE 1 Definitions o
31、f “forms of telecommunication” have been produced to be used by ITU Sectors Study Groups. These definitions of “forms of telecommunication” are of a general nature and are not in contradiction with definitions of services presently specified by the ITU Sectors. Definitions of services are produced b
32、y the Study Group responsible for these services (mainly Telecommunication Standardization Study Groups 1 and 2 for telecommunication services and Radiocommunication Study Groups 10 and 11 for broadcasting services). NOTE 2 A number of terms in the Recommendation appear also in Article S1 of the RR
33、with a different definition. These terms are identified by (RR . . ., MOD). Modifications are proposed for two reasons: some RR definitions only take into account regulatory aspects, while the proposed definitions are of a technical nature; some RR definitions give rise to difficulties of interpreta
34、tion, in these cases the proposed modifications or additions may be useful later for draft revisions of the RR. For regulatory applications, only the terms and definitions in the RR may be used. NOTE 3 Terms and definitions relating to the quality of service have not been included in this Recommenda
35、tion because they usually have rather specific applications. However, the introduction to ITU-T Recommendation E.800 which contains some general information on all services, is given in Annex 1 to this Appendix. 1 Forms of telecommunications 1.01 information; information; informacin Intelligence or
36、knowledge capable of being represented in forms suitable for communication, storage or processing. NOTE Information may be represented for example by signs, symbols, pictures or sounds. 1.02 signal; signal; seal A physical phenomenon one or more of whose characteristics may vary to represent informa
37、tion. NOTE The physical phenomenon may be for instance an electromagnetic wave or acoustic wave and the characteristic may be an electric field, a voltage or a sound pressure. 1.03 transmission; transmission; transmisin The transfer of information from one point to one or more other points by means
38、of signals. NOTE 1 Transmission can be effected directly or indirectly, with or without intermediate storage. NOTE 2 The use of the English word “transmission” in the sense of “emission” in radiocommunication and of “sending” is deprecated. 1.04 sending (in telecommunication), transmission (deprecat
39、ed in this sense); mission (en tlcommu-nication); emisin (en telecomunicacin) The production of a signal at an input port of a transmission line or into a transmission medium. NOTE In French the term “mission” has other meanings in radiocommunications, as given in Recommen-dation ITU-R V.573. 1.05 c
40、ommunication; communication; comunicacin Information transfer according to agreed conventions. NOTE In French and Spanish the corresponding terms “communication” and “comunicacin” have additional specific meanings in telecommunications (see 3.05 and 3.02). Rec. ITU-R V.662-3 7 1.06 telecommunication
41、; tlcommunication; telecomunicacin Communication by wire, radio, optical or other electromagnetic systems. NOTE The following definition is given in the Constitution of the International Telecommunication Union (Geneva, 1992) (CS 1012) (and RR No. S1.3): Any transmission, emission or reception of si
42、gns, signals, writings, images and sounds or intelligence of any nature by wire, radio, optical or other electromagnetic systems. 1.07 telephony; tlphonie; telefona A form of telecommunication primarily intended for the exchange of information in the form of speech. NOTE This is the definition given
43、 in the Constitution of the International Telecommunication Union (Geneva, 1992) (CS 1017) (RR No. S1.123). 1.08 telegraphy; tlgraphie; telegrafa A form of telecommunication in which the transmitted information is intended to be recorded on arrival as a graphic document; the transmitted information
44、may sometimes be presented in an alternative form or may be stored for subsequent use. NOTE 1 A graphic document records information in a permanent form and is capable of being filed and consulted; for example, it may take the form of written or printed matter or of a fixed image. NOTE 2 This is the
45、 definition given in the Constitution of the International Telecommunication Union (Geneva, 1992) (CS 1016) (RR Nos. S1.117 and S1.117.1). NOTE 3 Telegraph does not include television or videography. 1.09 telex (service); (service) tlex; (servicio) tlex A telegraph service enabling subscribers to co
46、mmunicate directly and temporarily with each other by means of start-stop apparatus and telecommunication circuits of the public telecommunication network. 1.10 facsimile; tlcopie; facsmil, fax A form of telecommunication for the reproduction at a distance of graphic documents in the form of other g
47、raphic documents geometrically similar to the original. 1.11 telewriting; tlcriture; teleescritura A form of telecommunication for the purpose of transmitting graphical information as it is being manually written or drawn and for simultaneously generating a reproduction at the distant terminal eithe
48、r on a screen or in some other form. NOTE In cases where the reproduction at the receiving end is in the form of a graphic document, the term “tlautographie” can be employed in French. 1.12 data; donnes; datos Information represented in a manner suitable for automatic processing. 1.13 data communication, data transmission (deprecated in this sense); communication de donnes, transmission de donnes (deprecated in this sense); comunicacin de datos, transmisin de datos (deprecated in this sense) A form of telecommunication intended for the tra
