1、 ETSI TR 102 390 V1.1.1 (2005-03)Technical Report Transmission and Multiplexing (TM);Access networks;Requirements for the support of Voice over DSLETSI ETSI TR 102 390 V1.1.1 (2005-03) 2 Reference DTR/TM-06021 Keywords access, network, transmission, xDSL, VoDSL ETSI 650 Route des Lucioles F-06921 So
2、phia 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 can be downloaded from: http:/www.etsi.org
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5、rg/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 permission. The copyright and the foregoing
6、restriction extend to reproduction in all media. European Telecommunications Standards Institute 2005. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand the TIPHON logo are Trade Marks currently being registered by ETSI
7、 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 TR 102 390 V1.1.1 (2005-03) 3 Contents Intellectual Property Rights5 Foreword.5 1 Scope 6 2 References (replaces clause 2/1)6 3 Definitions7 4
8、Abbreviations .7 5 VoDSL Reference Model (replaces clause 5/1) 8 5.1 VoDSL Reference Model Functional Block Definitions (replaces all of clause 5.1/1) .9 5.1.1 Core Network9 5.1.2 Access Network (AN).9 5.1.3 Network Termination 1 (NT1)9 5.1.4 Network Termination 2 (NT2)9 5.1.4.1 B-NT2 .9 5.1.4.2 N-N
9、T2.9 5.1.5 Terminal Adapter (TA).9 5.1.6 User Terminal .10 5.1.7 Access Network Management 10 5.2 VoDSL Reference Model Interface Definitions (replaces all of clause 5.2/1) 10 5.2.1 Interfaces at the V Reference Point 10 5.2.2 Interfaces at the U Reference Point 10 5.2.3 Interfaces at the TNand TB R
10、eference Points 10 5.2.4 Interfaces at the S Reference Point .10 5.2.5 Interfaces at the R Reference Point.10 5.2.6 Interfaces at the Q Reference Point 10 5.3 VoDSL IWF Reference Model.10 5.4 General VoDSL Service Model10 6 General Requirements for VoDSL.11 6.1 General DSL Requirements (supplements
11、clause 6.1/1)11 6.2 General System Requirements .11 6.2.1 Multi-Line Capability .11 6.2.2 Over-subscription .11 6.2.3 Dynamic Bandwidth Allocation for Voice (supplements clause 6.2.3/111 6.2.4 Voice Quality (replaces clause 6.2.4/1)12 6.2.5 Service Feature Transparency.12 6.2.6 Continuous Availabili
12、ty12 6.2.7 Performance12 6.2.8 Management .12 6.2.9 Network Security12 6.2.10 Network Compatibility .12 6.2.11 Reliability .12 6.2.12 Jitter and Wander13 6.2.13 Lifeline Voice Service 13 6.3 General Service Requirements (supplements clause 6.3/1) .13 6.3.1 VoDSL Bearer Requirements .14 6.3.2 VoDSL S
13、ignalling Requirements .14 6.3.3 Class 5 Services 14 6.3.4 Class 4 Services 14 7 VoDSL Management14 7.1 VoDSL Management Functions .14 7.2 VoDSL Management Architecture.15 Annex A: Voice over Asynchronous Transfer Mode (VoATM) (supplements Annex A/1)16 ETSI ETSI TR 102 390 V1.1.1 (2005-03) 4 Annex B
14、: Voice over Synchronous Transfer Mode (VoSTM) .17 B.1 Interfaces for CVoDSL 17 B.2 Channelized Voice over ADSL17 B.3 Channelized Voice over SDSL.17 B.3.1 POTS over SDSL .18 B.3.2 ISDN over SDSL18 B.3.3 ETSI V5.1/V5.2 transported over SDSL20 B.3.4 Lifeline Voice Service over SDSL using Dynamic Rate
15、Repartitioning23 B.3.4.1 Lifeline ISDN Example 24 B.3.4.2 Lifeline POTS Example26 B.4 Channelized Voice over VDSL27 Annex C: Voice over Internet Protocol (VoIP)28 History 30 ETSI ETSI TR 102 390 V1.1.1 (2005-03) 5 Intellectual Property Rights IPRs essential or potentially essential to the present do
16、cument 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 found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect
17、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 the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the exi
18、stence 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. Foreword This Technical Report (TR) has been produced by ETSI Technical Committee Transmission and Multiplexing (TM). The present doc
19、ument is modelled after the DSL Forums requirements for Voice over DSL, TR-039 1 (Technical Report 039), and is intended to supplement it by providing information about Voice-over-DSL (VoDSL) applications and architectures specific to European networks. The document structure has been maintained fro
20、m TR-039 1, to allow easy comparison of contents. Since much of the information in TR-039 1 is applicable to European networks, much of the present document consists of pointers; however, much information is new, and either supplements existing sections of TR-039 1 or requires new sections entirely.
21、 ETSI ETSI TR 102 390 V1.1.1 (2005-03) 6 1 Scope The present document specifies, from a European perspective, general AN functional requirements, in terms of transport means for signalling and voice channels, timing/synchronization, delay and BER performances, distribution of the relevant functions
22、over AN elements and management, for in-band support of Voice and NB data communications over DSL systems. It is structured in the form of a supplement to the DSL Forums TR-039 1. 2 References (replaces clause 2/1) For the purposes of this Technical Report (TR), the following references apply: 1 DSL
23、 Forum TR-039 (Version 1.1 - March 2001): “Requirements for Voice over DSL“. 2 ITU-T Recommendation I.411 (1993): “ISDN user-network interfaces - Reference configurations“. 3 ITU-T Recommendation G.995.1 (2001): “Overview of Digital Subscriber Line (DSL) Recommendations“. 4 ATM Forum af-tm-0150.000
24、(July 2000): “Addendum to Traffic Management v4.1 optional minimum desired cell rate indication for UBR“. 5 ANSI T1.508: “Network Performance - Loss Plan for Evolving Digital Networks“. 6 ITU-T Recommendation G.114 (2003): “One-way transmission time“. 7 ITU-T Recommendation G.131: “Talk echo and its
25、 control“. 8 ITU-T Recommendation G.165: “Echo cancellers“. 9 ITU-T Recommendation G.168: “Digital network echo cancellers“. 10 ITU-T Recommendation G.992.1: “Asymmetric digital subscriber line (ADSL) transceivers“. 11 ITU-T Recommendation G.992.2: “Splitterless asymmetric digital subscriber line (A
26、DSL) transceivers“. 12 ITU-T Recommendation G.107 (2003): “The E-model, a computational model for use in transmission planning“. 13 ETSI EN 300 347-1: “V Interfaces at the digital Local Exchange (LE); V5.2 Interface for the support of Access Network (AN); Part 1: V5.2 Interface Specification“. 14 IT
27、U-T Recommendation G.960 (1993): “Access digital section for ISDN basic rate access“. 15 IEEE Draft P802.3ah/D3.3: “Draft amendment to - Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carri
28、er sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks“. 16 ETSI TS 101 388: “Transmission and Multiplexing (TM); Access transmission syste
29、ms on metallic access cables; Asymmetric Digital Subscriber Line (ADSL) - European specific requirements ITU-T Recommendation G.992.1 modified“. 17 ETSI TS 101 524: “Transmission and Multiplexing (TM); Access transmission system on metallic access cables; Symmetric single pair high bitrate Digital S
30、ubscriber Line (SDSL)“. 18 ETSI TS 101 270-2: “Transmission and Multiplexing (TM); Access transmission systems on metallic access cables; Very High Speed Digital Subscriber Line (VDSL); Part 2: Transceiver specification“. 19 ITU-T Recommendation G.711: “Pulse Code Modulation (PCM) of voice frequenci
31、es“. ETSI ETSI TR 102 390 V1.1.1 (2005-03) 7 20 ITU-T Recommendation G.726: “40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM)“. 21 ETSI ETS 300 297: “Integrated Services Digital Network (ISDN); Access digital section for ISDN basic access“. 22 ETSI EN 300 324-1: “V interface
32、s at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Part 1: V5.1 interface specification“. 3 Definitions For the purposes of the present document, the terms and definitions given in TR-039 1 apply. 4 Abbreviations For the purposes of the present document, the
33、 abbreviations given in TR-039 1 and the following apply: AAL2 ATM Adaptation Layer 2 AAL5 ATM Adaptation Layer 5 ABR Available Bit Rate ADPCM Adaptive Differential Pulse-Code Modulation AN Access Network BA Basic rate Access BCC Bearer Channel Connection BER Bit-Error Rate B-NT2 Broadband - NT2 CAC
34、 Connection Admission Control CBR Constant Bit Rate CLR Cell-Loss Ratio CTD Cell-Transfer Delay CVoDSL Channelized Voice over DSL DRR Dynamic Rate RepartitioningDS Digital Section EFaddr Envelope Function address EFM Ethernet in the First Mile EN European Norm eoc embedded operations channel FCS Fra
35、me Check Sequence FE Function Element GFR Guaranteed Frame Rate HDLC High-level Data Link Control IEEE Institute of Electrical and Electronic Engineers IOM-2 ISDN-Oriented Modular interface revision 2 NOTE: IOM-2 is a registered trademark of SIEMENS AG. This information is given for the convenience
36、of users of the present document and does not constitute an endorsement by ETSI of the product named. Equivalent products may be used if they can be shown to lead to the same results. IP Internet Protocol ISDN BA ISDN Basic rate Access LAPD Link Access Protocol for ISDN D channel LAPV5 Link Access P
37、rotocol for V5 interface LAPV5-DL LAPV5 Data Link sublayer LAPV5-EF LAPV5 Envelope Function sublayer LE Local Exchange LFA Loss of Frame Alignment LOS Loss Of Signal LTU Line Termination Unit MPH communication between Management and PHysical layer ETSI ETSI TR 102 390 V1.1.1 (2005-03) 8 MPH-AI MPH-A
38、ctivation Indication MPH-AR MPH-Activation Request MPH-AWI MPH-AWake Indication MPH-DI MPH-Deactivated Indication MPH-DSAI MPH-Digital Section partial Activation Indication nrt-VBR Near-Realtime Variable Bit Rate N-ISDN Narrowband Integrated Services Digital Network N-NT2 Narrowband NT2 NT1 Network
39、Termination 1 NT1/2 NT1 integrated with NT2 NT2 Network Termination 2 NTU Network Termination Unit OSI Open Systems Interconnection PCM Pulse-Code Modulation PH communication between data-link layer and PHysical layer PHY PHYsical layer PMD Physical Medium-Dependent PMS Physical Medium-Specific PMS-
40、TC Physical Medium-Specific Transmission Convergence PTM Packet Transfer Mode rt-VBR Real-Time Variable Bit Rate RTP Real-time Transfer Protocol SDSL Symmetric single pair high bit rate Digital Subscriber Line STM Synchronous Transfer Mode TA Terminal Adapter TC Transmission Convergence TPS Transmis
41、sion Protocol-Specific TPS-TC Transmission Protocol-Specific - Transmission Convergence TS Technical Specification UBR Unspecified Bit Rate V5DLaddr V5 Data Link address VDSL Very high bitrate Digital Subscriber Line VoATM Voice over ATM VoDSL Voice over DSL VoIP Voice over Internet Protocol VoSTM V
42、oice over Synchronous Transfer Mode xDSL collective term referring to any of the various types of DSL technologies 5 VoDSL Reference Model (replaces clause 5/1) Figure 1 depicts the reference configuration for a generic DSL system. R S TNU V QN-NT2NT1 TA Access Network Management Core Network Access
43、 Network User Terminal B-NT2 TBFigure 1: Reference configuration for DSL This reference configuration is based on the reference configuration used for the N-ISDN in ITU-T Recommendation I.411 2 and is also given in ITU-T Recommendation G.995.1 3, and identifies the reference points in the context of
44、 access network. ETSI ETSI TR 102 390 V1.1.1 (2005-03) 9 NOTE: The reference configuration in figure 1 shows the functional groupings, which may or may not correspond to physical groupings. Physical groupings may comprise of one or more functional groupings. One or more of the elements in the refere
45、nce configuration may be null or could be merged in different scenarios. At the functional interfaces there are reference points, although existence of a physical interface is not implied. There may be more than one interface specification for each of these reference points. The exact interpretation
46、 at these reference points will depend upon the local network architecture and regulatory environment. 5.1 VoDSL Reference Model Functional Block Definitions (replaces all of clause 5.1/1) 5.1.1 Core Network The Core Network is part of the Public Switched Telephone Network, which transports telephon
47、y services between subscribers. Where needed, the Core Network translates between the signalling and bearer methods used by existing telephony equipment and signalling and bearer methods used by the Access Network. 5.1.2 Access Network (AN) The Access Network provides concentration for multiple NT1
48、devices, each with its own U reference point, to the Core Network, at the V reference point. In the case of VoDSL, this device is often referred to as a DSL Access Multiplexer (DSLAM). The reference architecture does not preclude the support of multiple services transported over DSL (e.g. VoSTM and
49、VoATM in parallel). 5.1.3 Network Termination 1 (NT1) The NT1 provides physical termination to the line from the Access Network (indicated at the U reference point), and provides service presentation to a customer at a logical or physical interface (indicated at the T reference point). The NT1 might not terminate the transport protocol from the Access Network (e.g. ATM) for user traffic. The NT1 may implement transport protocol functions such as rate adaptation required to support differe
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