1、 - STDaITU-T RECflN F.700-ENGL 2000 m 48b2591 Ob83240 8b2 INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU F.700 (I 112000) SERIES F: NON-TELEPHONE TELECOMMUNICATION S E RVI CES Au d iovisu a I services Framework Recommendation for multimedia services ITU-T
2、 Recommendation F.700 (Formerly CCITT Recommendation) STD-ITU-T RECMN F.700-ENGL ZOO0 D 48b2593 Ob83243 7T9 D ITU-T F-SERIES RECOMMENDATIONS NON-TELEPHONE TELECOMMUNICATION SERVICES TELEGRAPH SERVICE Operating methods for the international public telegram service The gentex network Message switching
3、 The international telemessage service The international telex service Statistics and publications on international telegraph services Scheduled and leased communication services Phototelegraph service Mobile services and multidestination satellite services MOBILE SERVICE F .l-F.19 F.20-F.29 F.30-F.
4、39 F .40-F.58 F.59-F.89 F .90-F .99 F. 1 00-F. 1 O4 F. 105-F.l O9 F.110-F.159 TELEMATIC SERVICES Public facsimile service Teletex service Videotex service General provisions for telematic services MESSAGE HANDLING SERVICES DIRECTORY SERVICES DOCUMENT COMMUNICATION Document communication Programming
5、communication interfaces DATA TRANSMISSION SERVICES AUDIOVISUAL SERWCES ISDN SERVICES F. 160-F. 199 F.200-F .299 F .300-F .349 F.350-F.399 F.400-F.499 F .500-F 549 F.550-F.579 F.580-F.599 F.600-F.699 F.800-F .849 UNIVERSAL PERSONAL TELECOMMUNICATION HUMAN FACTORS F. 850-F .899 F .900-F .999 For furt
6、her details, please refer to ITU-T List of Recommendations. Summary This Recommendation provides a methodology for constructing multimedia services which is timely and responsive to the needs of both the End-User and Service Provider. This methodology is based on a modular approach using a set of ne
7、twork independent building blocks or other communications capabilities being developed within ITU-T. The methodology is intended for use in developing a series of General Service Recommendations which combine the required modular elements in order to build generic services. Source ITU-T Recommendati
8、on F.700 was revised by ITU-T Study Group 16 (2001-2004) and was approved under the WTSC Resolution No. 1 procedure on 17 November 2000. Recommendation F.700 (11/2000) i FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications.
9、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 Telecommunicat
10、ion 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 Res
11、olution No. i. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. I NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication adminis
12、tration 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 a
13、pplicability 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
14、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. O ITU 2000 All rights reserved. No pari of this publication may be reproduced or utilized in any form or by an
15、y means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. 11 Recommendation F.700 (11/2000) STD-ITU-T RECMN F.7OO-ENGL 2000 48625711 Ob83244 408 1 1.1 1.2 1.3 1.4 1.5 1.6 2 2.1 2.2 2.3 2.4 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 CONTENTS Introduction
16、. Scope . Definitions Multimedia service development methodology 1.3.1 Communication capabilities 1.3.2 Multimedia service recommendations . Multimedia services reference model . Functional model of the service platform . Application of the reference and functional models to the service description
17、. Communication Capabilities . Communication tasks 2.1.1 Method of describing communication tasks 2.1.2 Attribute considerations . 2.1.3 Provisional list of communication tasks 2.1.4 Description of generic communication tasks . Media components Middleware service elements. . Supplementary services .
18、 Service description process . Framework Service profiles . Quality of service Generic service descriptions . Derivation of specific services Elaboration of service description Intercommunication among service categories . Annex A . Media components descriptions A. 1 Media component audio A . 1.2 De
19、scription . A . 1.3 Quality aspects . A . 1.4 Intercommunication . A.2 Media component video A.2.1 Definition . A.2.2 Description . A . 1.1 Definition . Recommendation F.700 (11/20OO) Page 1 1 1 2 3 3 3 4 4 5 6 6 6 7 8 12 13 14 15 15 18 18 18 19 19 20 20 20 20 20 21 21 22 22 22 . 111 . STD-ITU-T REC
20、MN F.300-ENGL 2000 4862591i Ob83245 344 9 A.2.3 Quality aspects . A.2.4 Intercommunication . A.2.5 Description of the static aspects A.2.6 A.3 Media component text A.3.1 Definition . A.3.2 Description . A.3.3 Quality Aspects A.3.4 Intercommunication . A.4 Media component graphics . Description of th
21、e dynamic aspects . A.4.1 Definition . A.4.2 Description . A.4.3 Quality aspects . A.4.4 Intercommunication . A.4.5 Description of static aspects A.4.6 Description of dynamic aspects . Media component still pictures . A.5.1 Definition . A.5.2 Description . A.5.3 Quality aspects . A.5.4 Intercommunic
22、ation . A.5.5 Description of static aspects A.5.6 Description of dynamic aspects . A.6 Media component data A.6.1 Definition . A.6.2 Description . A.6.3 Quality aspects . A.6.4 Intercommunication . A.6.5 Description of static aspects A.6.6 Annex B - Communication tasks descriptions AS Description of
23、 dynamic aspects . B . 1 Communication task conversing . B . 1.1 Definition . B.1.2 Description . B . 1.3 Quality aspects . B . 1.4 Intercommunication . B . 1.5 Static aspects B.2 Communication task conferencing . B.2.1 Definition . Page 23 24 24 24 24 24 24 25 25 25 25 26 26 26 26 26 26 26 26 27 27
24、 27 27 27 27 28 28 28 28 28 29 29 29 29 29 29 30 30 30 iv Recommendation F.700 (11/2000) STD-ITU-T RECMN F-700-ENGL 2000 4862591 0683246 280 W B.2.2 Description . B.2.3 Quality aspects . B.2.4 Intercommunication . B.2.5 Description of the static aspects B.3 Communication task distributing . B.3.1 De
25、finition . B.3.2 Description . B.3.3 Quality aspects . B.3.4 Intercommunication . B.3.5 Static aspects B.4 Communication task sending B.4.1 Definition . B.4.2 Description . B.4.3 Quality aspects . B.4.4 Intercommunication . B.4.5 Static aspects B.5 Communication task receiving . B.5.1 Definition . B
26、.5.2 Description . B.5.3 Quality aspects . B.5.4 Intercommunication . B.5.5 Static aspects B.6 Communication task collecting B.6.1 Definition . B.6.2 Description . B.6.3 Quality aspects . B.6.4 Intercommunication . B.6.5 Static aspects Annex C . Middleware service elements descriptions Middleware se
27、rvice element Conversation Control . C . 1.1 Definition . C . 1.2 Descnption . C . 1.3 Control functions . C . 1.4 Implementation Middleware service element Conference ControE C.2.1 Definition . C.2.2 Descnption . C.2.3 Control functions . C.2.4 Implementation C . 1 C.2 Recommendation F.700 (1 1/200
28、0) Page 30 31 31 32 32 32 32 33 33 33 33 33 34 34 34 34 35 35 35 35 36 36 36 36 36 37 37 37 38 38 38 38 38 38 38 38 38 39 41 V Page Annex D . Glossary . Appendix I . Multimedia medical consultation . Prose description . Full multimedia support capability I . 1 1.2 Application scenario . Restricted m
29、ultimedia support capability 1.3 Implementation notes 1.3.1 Related applications . 1.3.2 Associated applications . 1.3.3 Securitylprivacy . 1.3.5 Performance trade-offs 1.2.1 1.2.2 . 1.3.4 Service flexibility . Appendix II . Harmonization of multimedia services and applications 42 44 44 44 44 45 46
30、46 46 46 46 46 47 vi Recommendation F.700 (1 1/2000) STD-ITU-T RECMN F.700-ENGL 2000 48b259L Ob83248 O53 = Recommendation F.700 FRAMEWORK RECOMMENDATION FOR MULTIMEDIA SERVICES (revised in 2000) 1 Introduction 1.1 Scope This Recommendation provides a methodology for constructing multimedia services
31、which is timely and responsive to the needs of both the End-User and Service Provider. This methodology is based on a modular approach using a set of network independent building blocks or other communications capabilities being developed within IT-T. The methodology described in this Recommendation
32、 is intended for use in developing a series of General Service Recommendations which combine the required modular elements in order to build generic services (e.g. for Multimedia Conferencing Service, Multimedia Distribution Service, etc.). These Recommendations provide functional descriptions of se
33、rvices that are independent from the networks that support them. Because different networks may have different performance and bring different constraints, a related series of network specific Recommendations describe the way the services are adapted on each particular network. The service descripti
34、ons are not intended to impose a particular and detailed way of offering the services, but to provide the minimum set of functions and performance parameters necessary for achieving a sufficient quality of service and for insuring communication between users served by different service providers. Ma
35、nufacturers and service providers are free to offer additional functions and enhanced quality of service. 1.2 Definitions Information in curly brackets indicates source of definitions when other than F.700. Additional information is contained in Annex D. 1.2.1 application: An application is a set of
36、 activities performed to respond to the needs of the users in a given situation for purposes such as business, education, personal communication or entertainment. It implies software and hardware utilization could be performed in a fully or partially automatic way and could be accessed locally or re
37、motely. In the last case, it requests use of telecommunication services. 1.2.2 communication task: A communication task is a functional entity of a multimedia service that performs communication features. It handles a set of media components in a synchronized way in order to convey and control compl
38、ex information types. 1.2.3 media component: Media components are those parts of a communication service which provide the communication capabilities related to a single information type. They provide the necessary functions for user information handling, such as information capture, presentation, s
39、torage, transfer and post-processing. As the information types differ considerably in their basic elements, the specific functions also differ from information type to information type. 1.2.4 medium (Plural Media) MHEG: A means by which information is perceived, expressed, stored or transmitted. The
40、 term is to be avoided in its stand-alone form. To be unambiguous it should only be used in expressions such as perception medium, representation medium, presentation medium, storage medium, transmission medium, etc. Recommendation F.700 (11/2000) 1 1.2.5 multimedia (MHEG): The term multimedia is an
41、 adjective and must be attached to a noun which provides the context. For example, multimedia service or application, multimedia terminal, multimedia network and multimedia presentation. 1.2.6 multimedia application: A multimedia application is an application that requests the handling of two or mor
42、e representation media (information types) simultaneously which constitute a common information space. Examples are cooperative document editing, long distance meetings, remote surveillance, medical document remote analysis and teletraining. 1.2.7 multimedia representation (MHEG): The property of ha
43、ndling several types of representation media. 1.2.8 multimedia service: Multimedia services are telecommunication services that handle two or more types of media in a synchronized way from the users point of view. A multimedia service may involve multiple parties, multiple connections, and the addit
44、ion or deletion of resources and users within a single communication session. 1.2.9 presentation MHEG: A state which is ready for human perception. 1.2.10 presentation medium: The means for presenting information to the user, commonly known as an output device, such as a screen, printer or loudspeak
45、er. NOTE - Presentation is not to be confused with the OS1 Presentation Layer. 1.2.1 1 representation: The process of reproducing information for human perception. 1.2.12 representation medium: The type of the information in its coded form, ready for transmission. Examples of representation media ar
46、e: Representation media Possible coded forms characters or text ASCII, EBCDIC graphics audio still picture moving picture (video) CEPT, NAPLPS or CAPTAIN videotex, CGM TSS, G.711, MIDI, future MPEGIAudio standard Fax Group 3, Group 4, JPEG standard ITU-T Recommendation H.261; H.262, H.263 or Sequenc
47、e ITU-R Recommendation BT.60 1 NOTE - The representation medium is defined independently of the direction of transmission (i.e. to or from the user or between equipment). Each representation medium may be used both for input or output. For example, character representation may be used both for text
48、display and for text input from a keyboard; graphics may be used both for graphic display and graphic input; audio or pictures may be used both for reproduction and for capture. 1.2.13 telecommunication service: A telecommunication service is a set of telecommunication capabilities that works in a c
49、omplementary and cooperative way in order to let users perform applications. 1.3 Multimedia service development methodology Multimedia services may be seen from different points of view. From the end users point of view, a multimedia telecommunication service is the combination of telecommunication capabilities required to support a particular multimedia application. Such a service is usually considered to be independent of the network(s) providing these capabilities. From the Network Providers point of view, a multimedia telecommunication service is a combination or set of comb
