1、 International Telecommunication Union ITU-T Y.2211TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (10/2007) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Next Generation Networks Service aspects: Service capabilities and service architecture IMS
2、-based real-time conversational multimedia services over NGN ITU-T Recommendation Y.2211 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS AVAILABLE Y.1Y.99 GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.199 Services, applicati
3、ons and middleware Y.200Y.299 Network aspects Y.300Y.399 Interfaces and protocols Y.400Y.499 Numbering, addressing and naming Y.500Y.599 Operation, administration and maintenance Y.600Y.699 Security Y.700Y.799 Performances Y.800Y.899 Available Y.900Y.999 INTERNET PROTOCOL ASPECTS General Y.1000Y.109
4、9 Services and applications Y.1100Y.1199 Architecture, access, network capabilities and resource management Y.1200Y.1299 Transport Y.1300Y.1399 Interworking Y.1400Y.1499 Quality of service and network performance Y.1500Y.1599 Signalling Y.1600Y.1699 Operation, administration and maintenance Y.1700Y.
5、1799 Charging Y.1800Y.1899 Available Y.1900Y.1999 NEXT GENERATION NETWORKS Frameworks and functional architecture models Y.2000Y.2099 Quality of Service and performance Y.2100Y.2199 Service aspects: Service capabilities and service architecture Y.2200Y.2249 Service aspects: Interoperability of servi
6、ces and networks in NGN Y.2250Y.2299 Numbering, naming and addressing Y.2300Y.2399 Network management Y.2400Y.2499 Network control architectures and protocols Y.2500Y.2599 Available Y.2600Y.2699 Security Y.2700Y.2799 Generalized mobility Y.2800Y.2899 Available Y.2900Y.2999 For further details, pleas
7、e refer to the list of ITU-T Recommendations. ITU-T Rec. Y.2211 (10/2007) i ITU-T Recommendation Y.2211 IMS-based real-time conversational multimedia services over NGN Summary NGN release 1 makes provision for a category of services which are referred to as real-time conversational multimedia servic
8、es, as shown in Supplement 1 to the ITU-T Y.2000-series Recommendations. These include PSTN/ISDN simulation services and other services. When these real-time conversational multimedia services are provided by using an IMS-based service environment, the implementations will use SIP protocol between t
9、he application/service support functions and the service control functions within the service stratum of the NGN architecture. IMS-based NGNs which meet these service requirements will be capable of supporting real-time conversational multimedia services with enhanced service features, as well as al
10、lowing for enhanced implementation scenarios. This Recommendation defines the service requirements, service features, service architecture and implementation scenarios of IMS-based real-time conversational multimedia services. Source ITU-T Recommendation Y.2211 was approved on 7 October 2007 by ITU-
11、T Study Group 13 (2005-2008) under the ITU-T Recommendation A.8 procedure. Keywords Implementation scenarios, IMS, real-time conversational multimedia services, service feature. ii ITU-T Rec. Y.2211 (10/2007) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized
12、agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (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 v
13、iew to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four 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 Recommend
14、ations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for concis
15、eness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compliance with the Recommendatio
16、n is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INT
17、ELLECTUAL PROPERTY RIGHTS ITU draws attention to 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,
18、whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had/had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementer
19、s are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2008 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written perm
20、ission of ITU. ITU-T Rec. Y.2211 (10/2007) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation. 1 4 Abbreviations and acronyms 2 5 Conventions 4 6 General requirements for IMS-based real-time conversational multimedia ser
21、vices. 5 7 IMS-based real-time conversational multimedia services architecture details. 5 8 Service features for IMS-based real-time conversational multimedia services 6 9 PSTN/ISDN simulation services 9 9.1 Introduction 9 9.2 General . 10 9.3 Interworking considerations . 10 9.4 Originating identif
22、ication presentation (OIP). 11 9.5 Originating identification restriction (OIR) 12 9.6 Terminating identification presentation (TIP) 13 9.7 Terminating identification restriction (TIR). 13 9.8 Malicious communication identification (MCID) 13 9.9 Anonymous communication rejection (ACR) 14 9.10 Commun
23、ication diversion (CDIV). 16 9.11 Communication hold (HOLD) . 21 9.12 Communication barring (CB). 21 9.13 Completion of communication to busy subscriber (CCBS) . 22 9.14 Communication waiting (CW) . 23 9.15 Message waiting indication (MWI) 24 9.16 Conference (CONF) . 24 9.17 Advice of charge (AOC) 2
24、5 9.18 Explicit communication transfer (ECT) . 26 9.19 Reverse charging (RC) . 27 9.20 Use of authorization option in relation to PSTN/ISDN simulation services 27 10 Universal personal telecommunication (UPT) . 28 11 Customized ring-back tone (CRBT). 28 12 Customized ringing tone (CRT) . 29 13 Addit
25、ional services and service features. 29 14 Security consideration 29 iv ITU-T Rec. Y.2211 (10/2007) Page Appendix I Multimedia conference (MultiCONF) . 30 Appendix II IP Centrex. 31 Appendix III Mappings between IMS-based real-time conversational multimedia services and service features. 32 Appendix
26、 IV Implementation scenarios for IMS-based real-time conversational multimedia services 36 IV.1 Customized announcement. 36 IV.2 Group communication 38 IV.3 Customized routing 39 IV.4 Click-to-dial 41 IV.5 User profile management . 41 IV.6 Customized background music. 41 IV.7 Ring pattern 42 IV.8 Pe
27、rsonal identifier. 44 IV.9 Unsuccessful communication notification . 45 IV.10 Originating communication screening . 46 IV.11 Terminating communication screening 47 IV.13 Customized ringing 48 Appendix V Table of service interactions between pairs of PSTN/ISDN simulation services . 50 Bibliography. 5
28、3 ITU-T Rec. Y.2211 (10/2007) 1 ITU-T Recommendation Y.2211 IMS-based real-time conversational multimedia services over NGN 1 Scope This Recommendation defines the service requirements, service features, service architecture and implementation scenarios of IMS-based real-time conversational multimed
29、ia services. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subje
30、ct to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document w
31、ithin this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T M.3050.1 ITU-T Recommendation M.3050.1 (2007), Enhanced Telecom Operations Map (eTOM) The business process framework. ITU-T Q.1290 ITU-T Recommendation Q.1290 (1998), Glossary of terms used i
32、n the definition of intelligent network. ITU-T Y.2012 ITU-T Recommendation Y.2012 (2006), Functional requirements and architecture of the NGN release 1. ITU-T Y.2021 ITU-T Recommendation Y.2021 (2006), IMS for Next Generation Networks. ITU-T Y.2201 ITU-T Recommendation Y.2201 (2007), NGN release 1 r
33、equirements. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 customer ITU-T M.3050.1: The customer buys products and services from the enterprise or receives free offers or services. A customer may be a person or a business. 3.1.2 servi
34、ce feature ITU-T Q.1290: A reusable part of one or more service capabilities forming all or part of a service. 3.1.3 subscriber ITU-T M.3050.1: The person or organization responsible for concluding contracts for the services subscribed to and for paying for these services. 3.2 Terms defined in this
35、Recommendation This Recommendation defines the following terms: 3.2.1 IMS-based real-time conversational multimedia services: Multimedia services provided in real time by using an IMS-based service environment. NOTE These services may involve two or several parties using various media resources and
36、are usually bidirectional. 3.2.2 served user: The user who subscribes to and, possibly, invokes a service. 2 ITU-T Rec. Y.2211 (10/2007) 3.2.3 service: A selection from the portfolio of offerings made available by a service provider, characterized by one or more service features, which the user may
37、subscribe to and be optionally charged for. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: 3PCC Third Party Communication Control AC Authorization Code ACB Automatic Communication Back ACR Anonymous Communication Rejection AGC-FE Access Gateway Contro
38、l Functional Entity AOC Advice of Charge AOC-D Advice of Charge: Charging information during the communication AOC-E Advice of Charge: Charging information at the end of the communication AOC-S Advice of Charge: Charging information at communication set-up time AS-FE Application Server Functional En
39、tity BGC-FE Breakout Gateway Control Functional Entity CA Customized Announcement CB Communication Barring CBM Customized Background Music CCBS Completion of Communication to Busy Subscriber CD Communication Deflection CDIST Communication DISTribution CDIV Communication DIVersion CDIVN Communication
40、 DIVersion Notification CF Communication Forwarding CFB Communication Forwarding Busy CFNL Communication Forwarding on Not Logged in CFNR Communication Forwarding No Reply CFNRc Communication Forwarding on subscriber Not Reachable CFU Communication Forwarding Unconditional CL Communication Logging C
41、LI Calling Line Identification CLIP Calling Line Identification Presentation CLIR Calling Line Identification Restriction COLP COnnected Line identification Presentation COLR COnnected Line identification Restriction CONF CONFerence ITU-T Rec. Y.2211 (10/2007) 3 CR Customized Routing CRBT Customized
42、 Ring-Back Tone CRG Customized Ringing CTD Click-To-Dial CW Communication Waiting DMTQ Destination-associated Message Type Query ECT Explicit Communication Transfer FE Functional Entity FMD Follow-Me Diversion GC Group Communication GSM Global System for Mobile communications HOLD Communication HOLD
43、 ICB Incoming Communication Barring IMS IP Multimedia Subsystem ISDN Integrated Services Digital Network MCID Malicious Communication IDentification MGC-FE Media Gateway Control Functional Entity MPC Multi-Party Communication MRC-FE Media Resource Control Functional Entity MRP-FE Media Resource Proc
44、essing Functional Entity MW Message Waiting MWI MW Indication NR No Reply OCB Outgoing Communication Barring OCS Originating Communication Screening OFLC Off-Line Charging OIP Originating Identification Presentation OIR Originating Identification Restriction ONLC On-Line Charging P-CSC-FE Proxy Call
45、 Session Control Functional Entity PI Personal Identifier PSTN Public Switched Telecommunication Network QoS Quality of Service RC Reverse Charging RP Ring Pattern SC Split Charging S-CSC-FE Serving Call Session Control Functional Entity 4 ITU-T Rec. Y.2211 (10/2007) SIP Session Initiation Protocol
46、SUP-FE Service User Profile Functional Entity TCS Terminating Communication Screening TIP Terminating Identification Presentation TIR Terminating Identification Restriction UCN Unsuccessful Communication Notification UE User Equipment UIPR User Identification Presentation and Restriction UMTS Univer
47、sal Mobile Telecommunication System UPM User Profile Management UPT Universal Personal Telecommunication URL Uniform Resource Locator 5 Conventions This Recommendation deals with a transition to the NGN. As a result, terms that were used in the PSTN have to be transformed to apply to the new environ
48、ment. Additionally, some terms have been ingrained over time and in some instances a number of terms have the same meaning. For readability, sometimes one term is given preference and hence is used over the others. Specifically: the terms “end user“, “party“ and “user“ are used interchangeably depen
49、ding on context, the terms “served user“ and “subscriber“ are used interchangeably depending on context, the PSTN/ISDN term “call“ is replaced in most instances with the term “communication“ when used in the context of NGN, in this Recommendation, when the term “real-time service“ is used, it is intended that it applies to at least the voice, video and text media types. In some instances there is a need to talk about users who originate communication, users who receive communication, and users who have subscribed to s
