1、 ETSI TS 101 388 V1.4.1 (2007-08)Technical Specification Access Terminals Transmission and Multiplexing (ATTM);Access transmission systems on metallic access cables;Asymmetric Digital Subscriber Line (ADSL) -European specific requirementsITU-T Recommendation G.992.1 modifiedETSI ETSI TS 101 388 V1.4
2、.1 (2007-08) 2 Reference RTS/ATTM-06007 Keywords access, ADSL, basic, endorsement, interaction, interworking, IP, ISDN, transmission 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 bu
3、t 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 The present document may be made available in more than one electronic version or in print. In any case of existing or perceived
4、difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the 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 awa
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6、tp:/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 restriction extend to reproduction in all media. European Telecommunications Standards Institute 2007. All rights reserved. DECTT
7、M, 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 for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organiz
8、ational Partners. ETSI ETSI TS 101 388 V1.4.1 (2007-08) 3 Contents Intellectual Property Rights6 Foreword.6 1 Scope 7 2 References 7 3 Definitions and abbreviations.8 3.1 Definitions8 3.2 Abbreviations .9 4 Configuration of ADSL9 4.1 Methods for configuring ADSL over POTS.9 4.1.1 EC ADSL over POTS.9
9、 4.1.2 FDD ADSL over POTS 10 4.2 Methods for configuring ADSL over ISDN .10 4.2.1 EC ADSL over ISDN .10 4.2.1.1 Downstream transmit spectral mask .10 4.2.1.2 Upstream transmit spectral mask 11 4.2.2 FDD ADSL over ISDN.12 4.2.2.1 Downstream transmit spectral mask .12 4.2.2.2 Upstream transmit spectra
10、l mask 12 4.3 Aggregate transmit power 13 5 Transmission performance objectives and test methods 13 5.1 Test procedures 14 5.1.1 Test set-up definition 14 5.1.2 Noise injection network15 5.1.2.1 Differential mode injection .15 5.1.2.2 Common mode injection.15 5.1.3 Signal and noise level definitions
11、 .16 5.1.4 Noise levels calibration.16 5.1.4.1 Differential mode noise calibration.16 5.1.4.2 Common mode noise calibration.17 5.1.5 Startup training procedure 17 5.2 Test loops .17 5.2.1 Background information.17 5.2.2 Test loop topology 18 5.2.3 Test loop accuracy 19 5.3 Impairment generators19 5.
12、3.1 Functional description.19 5.3.2 Cable cross-talk models 21 5.3.3 Individual impairment generators.21 5.3.3.1 Equivalent NEXT disturbance generator G1.xx .22 5.3.3.2 Equivalent FEXT disturbance generator G2.xx22 5.3.3.3 Background noise generator G3 .22 5.3.3.4 White noise generator G4.22 5.3.3.5
13、 Broadcast RF noise generator G5.22 5.3.3.6 Amateur RF noise generator G6.23 5.3.3.7 Impulse noise generator G723 5.3.3.8 Line sharing noise generator G8.24 5.3.4 Profiles of the individual impairment generators24 5.3.4.1 Frequency domain profiles of generators G1 and G2 .24 5.3.4.1.1 Frequency doma
14、in profiles for EC ADSL over POTS 25 5.3.4.1.2 Frequency domain profiles for EC ADSL over ISDN.26 5.3.4.1.3 Frequency domain profiles for FDD ADSL over POTS .26 5.3.4.1.4 Frequency domain profiles for FDD ADSL over ISDN27 5.3.4.2 Time domain profiles of generator G1-G428 ETSI ETSI TS 101 388 V1.4.1
15、(2007-08) 4 5.4 Transmission performance tests .30 5.4.1 Bit error ratio requirements.30 5.4.1.1 Control of transmit power in opposing direction 30 5.4.2 Measuring noise margin30 5.4.2.1 Measuring cross-talk noise margin .30 5.4.2.2 Measuring impulse noise margin 30 5.4.3 Test sequences 31 5.4.4 Mic
16、ro-interruptions.32 5.5 Performance objectives 32 5.5.1 Performance objectives for EC ADSL over ISDN .33 5.5.2 Performance objectives for EC ADSL over POTS.37 5.5.3 Performance objectives for FDD ADSL over ISDN.41 5.5.4 Performance objectives for FDD ADSL over POTS 45 6 ADSL splitter .49 6.1 Impact
17、on existing baseband services.49 Annex A (normative): Distributed cable coefficients for the test loop cables.51 Annex B (informative): Transmission of cable sections57 B.1 Definition of transmission function and insertion loss.57 B.2 Derivation of s-parameters from primary cable parameters.58 Annex
18、 C (informative): ADSL over ISDN configuration of T1.413 based modems.59 C.1 Introduction 59 C.2 ATU-C59 C.2.1 Used frequency band 59 C.2.2 Nominal aggregate power level59 C.2.3 Pilot frequency .59 C.2.4 Transmit spectral mask.59 C.3 ATU-R60 C.3.1 ATU-R transmitter reference models .60 C.3.2 Used fr
19、equency band 60 C.3.3 Nominal aggregate power level60 C.3.4 Maximum number of data sub-carriers 61 C.3.5 Pilot frequency .61 C.3.6 Nyquist frequency 61 C.3.7 Modulation by the inverse discrete fourier transform 61 C.3.8 Synchronization symbol .61 C.3.9 Cyclic prefix.62 C.3.10 Transmit spectral mask.
20、62 C.4 Initialization .62 C.4.1 C-Activate 62 C.4.2 C-ACT2m.62 C.4.3 C-ACT2e 62 C.4.4 R-Acknowledgment63 C.4.5 R-ACT-REQ.63 C.4.6 R-ACK1m 63 C.4.7 R-ACK1e63 C.4.8 R-ACK2m 63 C.4.9 R-ACK2e63 C.4.10 C-REVEILLE.63 C.4.11 C-PILOT1.63 C.4.12 R-REVERB1 64 C.4.13 R-MEDLEY .64 C.4.14 C-MSGS2.64 C.4.15 R-MSG
21、S2.64 C.4.16 C-ECT and R-ECT .64 C.4.17 Power Cut-back 65 ETSI ETSI TS 101 388 V1.4.1 (2007-08) 5 C.4.18 C-B 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 (ht
22、tp:/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 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 m
23、ay become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Access Terminals Transmission and Multiplexing (ATTM). The present document, in conjunction with ITU-T Recommendation G.992.1 2 provides the European specifications
24、for ADSL. ETSI ETSI TS 101 388 V1.4.1 (2007-08) 7 1 Scope The present document specifies European requirements for ADSL. The definition of new line codes and/or transmission systems is outside the scope of the present document. The present document endorses ITU-T Recommendation G.992.1 2, the conten
25、ts of which apply together with the addition of the modifications being covered herein. In particular the aspects covered by the present document are related to: 1) Methods to allow the simultaneous delivery of ADSL and ISDN-BA services 1 on the single pair. For example the techniques and redefiniti
26、on of the ADSL signals/parameters as defined in ITU-T Recommendation G.992.1 2 to allow ISDN-BA base band signals to occupy frequencies below ADSL (from here onwards referred as out-of-band transport). 2) Performance Objectives and Test methods for ADSL over POTS/ISDN-BA. 3) TS 102 080 1 backward co
27、mpatibility. 4) Power feeding for the transported ISDN-BA. 5) Latency. 6) ISDN-BA splitter characteristics. 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
28、 of publication and/or edition number or version 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 a
29、t http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 1 ETSI TS 102 080 (V1.4.1): “Transmission and Multiplexing (TM); Integrated Services Digital Network (ISDN) basic rate access; D
30、igital transmission system on metallic local lines“. 2 ITU-T Recommendation G.992.1 (1999): “Asymmetrical digital subscriber line (ADSL) transceivers“. 3 ETSI TS 101 388 (V1.1.1): “Transmission and Multiplexing (TM); Access transmission systems on metallic access cables; Asymetric Digital Subscriber
31、 Line (ADSL) - Coexistence of ADSL and ISDN-BA on the same pair ANSI T1.413 - 1998, modified“. 4 ITU-T Recommendation G.996.1 (2001): “Test procedures for digital subscriber line (DSL) transceivers“. 5 ANSI T1.413: “Network to Customer Installation Interfaces - Asymmetric Digital Subscriber Line (AD
32、SL) Metallic Interface“. 6 ETSI TS 101 952-1-1: “Access network xDSL transmission filters; Part 1: ADSL splitters for European deployment; Sub-part 1: Generic specification of the low pass part of DSL over POTS splitters including dedicated annexes for specific xDSL variants“. ETSI ETSI TS 101 388 V
33、1.4.1 (2007-08) 8 7 ETSI TS 101 952-1-2: “Access network xDSL transmission filters; Part 1: ADSL splitters for European deployment; Sub-part 2: Specification of the high pass part of ADSL/POTS splitters“. 8 ETSI TS 101 952-1-3: “Access network xDSL transmission filters; Part 1: ADSL splitters for Eu
34、ropean deployment; Sub-part 3: Specification of ADSL/ISDN splitters“. 9 ITU-T Recommendation G.992.2: “Splitterless asymmetric digital subscriber line (ADSL) transceivers“. 10 DSL Forum, TR-100, “ADSL2/ADSL2plus Performance test plan“, 2007. NOTE: Available from http:/www.dslforum.org/techwork/trepo
35、rts.shtml 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: characteristic impedance (Z0): property of homogeneous cables that is cable dependent NOTE: This impedance value can be observed as input impedance, when the
36、 other end of the cable is terminated with a load having the same impedance Z0. design impedance (RV): target input and output impedance of the ADSL modem NOTE: This is 100 for ADSL modems. downstream: high speed digital data channel(s) in the direction of ALT towards ANT (network to customer premis
37、es) EC ADSL over ISDN: refers to ADSL systems, using overlapped spectra, configured to allow delivery of ISDN-BA or POTS on the same pair NOTE: EC ADSL over ISDN systems are configured as described in annex B of ITU-T Recommendation G.992.1 2. EC ADSL over POTS: refers to ADSL systems, using overlap
38、ped spectra, configured to allow delivery of POTS on the same pair NOTE: EC ADSL over POTS systems are configured as described for overlapped PSD masks in annex A of ITU-T Recommendation G.992.1 2. electrical length: insertion loss for a loop at a given test frequency fT, normalized to the reference
39、 impedance of 135 FDD ADSL over ISDN: refers to ADSL systems, using reduced NEXT spectra, configured to allow delivery of ISDN-BA or POTS on the same pair NOTE: FDD ADSL over ISDN systems are configured as described in annex B of ITU-T Recommendation G.992.1 2, but using the downstream PSD mask desc
40、ribed in clause 4.2.2.1. FDD ADSL over POTS: refers to ADSL systems, using reduced NEXT spectra, configured to allow delivery of POTS on the same pair NOTE: FDD ADSL over POTS systems are configured as described in annex A of ITU-T Recommendation G.992.1 2. reference impedance (RN): chosen impedance
41、 used for specifying transmission and reflection characteristics of cables and test loops NOTE: ETSI has normalized this value at 135 for a wide range of xDSL performance and conformance tests, including ADSL tests. This value is considered as being a reasonable average of characteristic impedances
42、(Z0) observed for a wide range of commonly used European distribution cables. ETSI ETSI TS 101 388 V1.4.1 (2007-08) 9 upstream: high speed digital data channel(s) in the direction of ANT towards ALT (customer premises to network) 3.2 Abbreviations For the purposes of the present document, the follow
43、ing abbreviations apply: 2B1Q Baseband linecode for ISDN-BA (4-PAM) 4B3T Alternative ISDN-BA baseband linecode with wider frequency spectrum than 2B1Q ADL All Digital Loop ADSL Asymmetric Digital Subscriber Line ALT ADSL Line Termination ANT ADSL Network Termination ATM Asynchronous Transfer Mode AT
44、U-C ADSL Terminal Unit-Central office ATU-R ADSL Terminal Unit-Remote AWGN Additive White Gaussian Noise BER Bit Error Ratio DC Dedicated Control DSL Digital Subscriber Line EC Echo Cancelled FDD Frequency Division Duplexing/Duplexed FEXT Far-End Cross-Talk IDFT Inverse Discrete Fourier Transform IS
45、DN Integrated Services Digital Network ISDN-BA Integrated Service Digital Network Basic Rate Access LT Line Termination LTU Line Termination Unit LW Long Wave MW Medium WaveNEXT Near-End Cross-Talk NT N etwork TerminationNTU Network Termination Unit POTS Plain Old Telephone Service PRU Pseudo-Random
46、 Upstream PSD Power Spectral Density (single sided) RF Radio Frame RFI Radio Frequency Interface SDSL Symmetric Digital Subscriber Line STM Synchronous Transfer Mode SW Short Wave VSDSL Very high speed Digital Subscriber Line 4 Configuration of ADSL 4.1 Methods for configuring ADSL over POTS The met
47、hods for configuring ADSL over POTS are as described in ITU-T Recommendation G.992.1 2. Additional constraints on ADSL over POTS operation are specified in clauses 4.1.1 and 4.1.2. 4.1.1 EC ADSL over POTS EC ADSL over POTS shall comply with the requirements in annex A of ITU-T Recommendation G.992.1
48、 2. The upstream transmission shall comply with the transmit spectral mask in clause A.2.4 of ITU-T Recommendation G.992.1 2 (reproduced in clause D.3). The downstream transmission shall comply with the transmit spectral mask in clause A.1.2 of ITU-T Recommendation G.992.1 2 (reproduced in clause D.
49、1). ETSI ETSI TS 101 388 V1.4.1 (2007-08) 104.1.2 FDD ADSL over POTS FDD ADSL over POTS shall comply with the requirements in annex A of ITU-T Recommendation G.992.1 2. The upstream transmission shall comply with the transmit spectral mask in clause A.2.4 of ITU-T Recommendation G.992.1 2 (reproduced in clause D.3). The downstream transmission shall comply with the transmit spectral mask in clause A.1.3 of ITU-T Recommendation G.992.1 2 (reproduced in clause D.2). 4.2 Methods for configuring AD
