1、 ETSI TS 181 001 V1.1.1 (2006-03)Technical Specification Telecommunications and Internet converged Services andProtocols for Advanced Networking (TISPAN);Videotelephony over NGN;Stage 1 service descriptionETSI ETSI TS 181 001 V1.1.1 (2006-03) 2 Reference DTS/TISPAN-01001-NGN-R1 Keywords telephony, v
2、ideo ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present document
3、can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, t
4、he reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI do
5、cuments is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written p
6、ermission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2006. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand the TIPHON logo are Tra
7、de Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 3 Contents Intellectual Property Rights5 Foreword.5 Introduction 5 1 Sco
8、pe 6 2 References 6 3 Definitions and abbreviations.6 3.1 Definitions6 3.2 Abbreviations .7 4 Service description .7 5 Procedures 7 5.1 General service requirements .7 5.2 Registration, provisioning, activation, invocation and withdrawal 8 5.3 Charging and accounting8 6 Quality of service requiremen
9、ts .8 6.1 General .8 6.2 Video quality8 6.3 Audio quality8 7 Interworking considerations.9 7.1 General .9 7.2 Interworking with emulation services 9 8 Interactions with PSTN/ISDN simulation services 9 8.1 General .9 8.2 Mandatory services.9 8.2.1 Originating Identification Presentation (OIP).9 8.2.2
10、 Originating Identification Restriction (OIR).9 8.2.3 Terminating Identification Presentation (TIP)9 8.2.4 Terminating Identification Restriction (TIR)9 8.2.5 Malicious Communication Identification (MCID) .9 8.2.6 Anonymous Communication Rejection (ACR) 9 8.3 Recommended Services .10 8.3.1 Communica
11、tion DIVersion (CDIV) .10 8.3.2 Communication Waiting (CW).10 8.3.3 Communication HOLD (HOLD)10 8.3.4 Communication Baring (CB)10 8.3.5 Communication Completion on Busy Subscriber (CCBS).10 8.3.6 Message Waiting Indication (MWI) .10 8.4 Optional services 10 8.4.1 CONFerence (CONF).10 8.4.2 Advice of
12、 Charge (AoC).10 8.4.3 Explicit Communication Transfer (ECT) .11 8.4.4 Reverse charging 11 Annex A (informative): Guidelines .12 A.1 Terminal requirements .12 A.1.1 Service options .12 A.1.2 Communication set-up .12 A.1.2.1 Communication setup in audio mode .13 A.1.2.2 Communication setup in mute mo
13、de 13 A.1.2.3 Communication setup in video-audio mode .13 A.1.3 Communication release 13 ETSI ETSI TS 181 001 V1.1.1 (2006-03) 4 A.2 Change of communication mode14 A.2.1 Mute .14 A.2.2 Frozen.14 A.2.3 Audio/video14 A.2.4 External source.14 A.2.5 Synchronization14 A.2.6 Other.14 A.3 Use cases 15 Hist
14、ory 16 ETSI ETSI TS 181 001 V1.1.1 (2006-03) 5 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be f
15、ound in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to
16、 the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document.
17、Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN). The present document describes the requirements for NGN videotelephony of TISPAN NGN Release 1. Introduction TIS
18、PAN NGN bases the provision of real-time communication services on the 3GPP specified IMS. This is a flexible tool that can provide a wide range of service interactions between terminals and networks. Videotelephony provides a specific use of the generic capabilities of the IMS. The present document
19、 provides requirements to investigate the capabilities of the IMS to provide Videotelephony, and may be used for a “gap analysis“ of the features and capabilities provided by the IMS. The specific services and interactions described in the present document are based on other service specifications.
20、The IMS is an inherently multimedia service control platform, and should be able to provide all of these services. The interactions between the user and the terminal and the terminal and the network are not provided. The services and capabilities provided by a TISPAN NGN are described in TS 181 005
21、2. The requirements for services, described in the present document, also take account of the interactions required between interconnected networks - both between NGN and the interconnection of NGN with legacy networks. The aim of the present document is to assist network operators and service provi
22、ders to deploy NGN multimedia services. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 6 1 Scope The present document defines the requirements for a videotelephony service which may be supported by a TISPAN NGN. These requirements form the basis for the definition of network capabilities. The present documen
23、t provides interoperability service requirements for interconnection between existing networks and a TISPAN NGN, and between TISPAN NGN. The present document only provides requirements for IP multimedia based networks. Services provided by a TISPAN NGN to support legacy terminals and interfaces (PST
24、N/ISDN emulation) are defined in existing PSTN/ISDN documents. Requirements for PSTN/ISDN emulation are out of scope of the present document and are described in other documents. The applicability of PSTN/ISDN simulation services to the videotelephony service requirements are defined in the present
25、document. The requirements in the present document are described from the user point of view. The requirements do not take into account capabilities of existing protocols defined for the IMS. The evolution or modifications to these protocols are beyond the scope of the present document. NOTE: The pr
26、esent document uses the term “NGN“ only in the context of TISPAN. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication and/or edition number or v
27、ersion number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. 1 ETSI
28、TS 181 002: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Multimedia Telephony with PSTN/ISDN simulation services“. 2 ETSI TS 181 005: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Services an
29、d Capabilities Requirements“. 3 ETSI TR 180 000: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); NGN Terminology“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions given i
30、n TR 180 000 3 apply: originating party; terminating party. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 7 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: ACR Anonymous Communication Rejection AoC Advice of Charge CB Communication session Barring CCBS Communic
31、ation Completion on Busy Subscriber CDIV Communication DIVersion CIF Common Intermediate Format CONF CONFerence CW Communication Waiting ECT Explicit Communication Transfer HOLD communication HOLD IMS IP Multimedia Subsystem IP Internet Protocol ISDN Intergrated Services Digital Network MCID Malicio
32、us Communication IDentification MWI Message Waiting Indication NGN Next Generation Network OIP Originating Identification Presentation OIR Originating Identification Restriction PCM Pulse Coded Modulation PIP PIcture and Picture PSTN Public Swithched Telephone Network QCIF Quarter Common Intermediat
33、e Format RTP Real-time Transport Protocol SMS Short Message Service TIP Terminating Identification Presentation TIR Terminating Identification Restriction 4 Service description Videotelephony is a real time conversational service using video media and audio or other types of media. The service is as
34、sumed to be applicable only to dedicated terminal equipment with video capabilities. The videotelephony service may be considered as a specific instance of an IP multimedia service, or as part of the Multimedia Telephony with PSTN/ISDN Simulation Services. 5 Procedures 5.1 General service requiremen
35、ts The videotelephony service shall conform to the requirements in TS 181 005 2, clause 5.2.1. In particular, the following capabilities described in TS 181 005 2 shall be applicable to this service: Handling of an incoming session (by the terminating entity). Presentation of session originator iden
36、tity. Negotiation of an incoming session. Accepting or rejecting an incoming session. Handling of an ongoing session. User modification of media in an ongoing session. Presentation of identity of connected-to party of a session. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 8 Ending a session. Capability Ne
37、gotiation. Redirecting of IP Multimedia sessions. Regulatory service requirements. Lawful Intercept requirements. Emergency service requirements. NOTE: Emergency Service support for video may be limited. Malicious Communication Identity service requirements (MCID). Anonymous Communications Rejection
38、 service requirements (ACR). 5.2 Registration, provisioning, activation, invocation and withdrawal The requirements for Registration/Log-out, provisioning, activation, invocation and withdrawal shall be as described in TS 181 005 2. 5.3 Charging and accounting The requirements for charging and accou
39、nting shall be as described in TS 181 005 2. 6 Quality of service requirements 6.1 General The quality of service requirements shall be as described in TS 181 005 2. The following parameters may also be taken into account: Overall Delay, Delay Variation, Differential Delay between sound and image, S
40、ound Quality, Image Quality, Echo Cancellation, Sensitivity to Packet Loss, etc. 6.2 Video quality Four profiles are defined in table 1. Other enhancement or additional functions may be added. Table 1: Video quality profile Profile Description A Basic Videotelephony: PCM or equivalent telephony audi
41、o, QCIF or CIF video with limited movements capability. B Enhanced Videotelephony: wideband audio, CIF video. The service should be usable for sign language and lip-reading and should provide adequate representation of the fluid movements of a person displayed in head and shoulders view. Facial expr
42、essions shall be clearly recognized. C Television Broadcasting quality. D High Definition Television quality. 6.3 Audio quality Videotelephony does not place any additional requirements for audio quality. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 9 7 Interworking considerations 7.1 General An NGN shall
43、support the interoperability of the videotelephony service with non NGN network services and vice versa. This includes interworking the audio component to the PSTN/ISDN and vice versa. The video component shall only be interworked if video is supported in the non NGN network. The scope of this inter
44、working may result in a limited service capability. 7.2 Interworking with emulation services An NGN shall support the interoperability of the Multimedia Telephony with PSTN/ISDN Simulation Services with the services provided by the NGN PSTN/ISDN Emulation subsystems where both are deployed. The scop
45、e of this interworking may result in the same limited service capability as interworking with an existing PSTN/ISDN network. 8 Interactions with PSTN/ISDN simulation services 8.1 General A network operator may choose to offer the PSTN/ISDN simulation services as described in TS 181 002 1 in conjunct
46、ion with this videotelephony service as part of an NGN deployment scenario. The following clauses detail the use of PSTN/ISDN simulation services with this videotelephony service for this scenario. 8.2 Mandatory services 8.2.1 Originating Identification Presentation (OIP) The principles of the corre
47、sponding PSTN/ISDN simulation service defined in TS 181 002 1 shall apply. 8.2.2 Originating Identification Restriction (OIR) The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 1 shall apply. 8.2.3 Terminating Identification Presentation (TIP) The principles of th
48、e corresponding PSTN/ISDN simulation service defined in TS 181 002 1 shall apply. 8.2.4 Terminating Identification Restriction (TIR) The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 1 shall apply. 8.2.5 Malicious Communication Identification (MCID) The principle
49、s of the corresponding PSTN/ISDN simulation service defined in TS 181 002 1 shall apply. 8.2.6 Anonymous Communication Rejection (ACR) The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 1 shall apply. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 108.3 Recommended Services 8.3.1 Communication DIVersion (CDIV) In addition to the principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 1 the following shall also apply: User A requests a communication w
