ETSI TR 103 279-2014 End to End Network Architectures (E2NA) Location of Transcoders for voice and video communications (V1 1 1)《端到端网络架构 (E2NA) 语音和视频通讯用转码器的位置 (V1 1 1)》.pdf
《ETSI TR 103 279-2014 End to End Network Architectures (E2NA) Location of Transcoders for voice and video communications (V1 1 1)《端到端网络架构 (E2NA) 语音和视频通讯用转码器的位置 (V1 1 1)》.pdf》由会员分享,可在线阅读,更多相关《ETSI TR 103 279-2014 End to End Network Architectures (E2NA) Location of Transcoders for voice and video communications (V1 1 1)《端到端网络架构 (E2NA) 语音和视频通讯用转码器的位置 (V1 1 1)》.pdf(11页珍藏版)》请在麦多课文档分享上搜索。
1、 ETSI TR 103 279 V1.1.1 (2014-08) End to End Network Architectures (E2NA); Location of Transcoders for voice and video communications TECHNICAL REPORT ETSI ETSI TR 103 279 V1.1.1 (2014-08) 2Reference DTR/E2NA-00006-Loc-Transcoders Keywords codec, interconnection, transcoding ETSI 650 Route des Lucio
2、les 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 The present document can be downloaded from: http:/www.etsi.org The pre
3、sent document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such vers
4、ions and/or in print, the only prevailing document is the print of the Portable Document Format (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 c
5、urrent status of this and other ETSI documents 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 repro
6、duced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restrictio
7、n extend to reproduction in all media. European Telecommunications Standards Institute 2014. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its M
8、embers and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TR 103 279 V1.1.1 (2014-08) 3Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs terminology 4g3Introduction 4g31 Scope 5g32 References 5g32.1 No
9、rmative references . 5g32.2 Informative references 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 6g34 Background 6g35 Review of standards and technical specifications 6g35.1 Interconnection between service provider networks 6g35.1.1 Interconnection between circuit-sw
10、itched networks . 6g35.1.1.1 Direct interconnection between fixed service provider networks . 6g35.1.1.2 Direct interconnection between mobile service provider networks 7g35.1.1.3 Direct interconnection between a fixed and a mobile service provider network . 7g35.1.1.4 Non-direct interconnection bet
11、ween service provider networks . 7g35.1.2 Interconnection between a circuit-switched service provider network and an IP-based service provider network . 7g35.1.2.1 Direct interconnection between fixed service provider networks . 7g35.1.2.2 Direct interconnection between mobile service provider netwo
12、rks 7g35.1.2.3 Direct interconnection between a fixed and a mobile service provider network . 7g35.1.2.4 Non-direct interconnection between service provider networks . 7g35.1.3 Interconnection between IP-based service provider networks 8g35.1.3.1 Direct interconnection . 8g35.1.3.2 Non-direct interc
13、onnection 8g35.2 Location of transcoders inside networks 8g35.2.1 Circuit-switched service provider networks . 8g35.2.1.1 Fixed networks 8g35.2.1.2 Mobile Networks. 8g35.2.2 VoIP service provider networks 9g35.2.2.1 IMS . 9g35.2.2.2 Other networks 9g36 Gap Analysis 9g37 Recommendations 9g37.1 Guidan
14、ce for service providers . 9g37.2 Suggested additions to existing standards 10g3History 11g3ETSI ETSI TR 103 279 V1.1.1 (2014-08) 4Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essentia
15、l IPRs, if any, is publicly available for ETSI members and non-members, and can be found 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 ar
16、e available on the ETSI Web server (http:/ipr.etsi.org). Pursuant to 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) whic
17、h are, or may be, or may become, essential to the present document. Foreword This Technical Report (TR) has been produced by ETSI Project End-to-End Network Architectures (E2NA). Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “may not“, “need“, “
18、need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Introduction As the number of
19、 voice and video codecs available on the market place increases, resorting to transcoding functions becomes unavoidable. There seems to be little guidance on where to implement and invoke these functions within and between networks. Which network (e.g. the originating, transit or terminating network
20、, the fixed or the mobile network) should be responsible for transcoding and which entity inside this network (e.g. home gateway, edge gateway, border gateway, trunking gateway, specialized media gateway in the core network, etc.) should perform transcoding are typical questions that have to be answ
21、ered to ensure successful call setup procedures with optimal end-to-end quality of experience. ETSI ETSI TR 103 279 V1.1.1 (2014-08) 51 Scope The present document provides a review of standardization activities on the location of transcoders for voice and video communications inside and across netwo
22、rks. It identifies issues that are not addressed in current standards and provides recommendations to fill these gaps. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited vers
23、ion applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks include
24、d in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are necessary for the application of the present document. Not applicable. 2.2 Informative references The following referenced documents
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