1、 ETSI TS 101 548 V2.1.1 (2016-09) Access, Terminals, Transmission and Multiplexing (ATTM); European Requirements for Reverse Powering of Remote Access Equipment TECHNICAL SPECIFICATION ETSI ETSI TS 101 548 V2.1.1 (2016-09)2 Reference RTS/ATTM-0630 Keywords ADSL2plus, VDSL2 ETSI 650 Route des Luciole
2、s 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/standards
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6、Notification No part may be reproduced 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 copyr
7、ight and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2016. 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 re
8、gistered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 101 548 V2.1.1 (2016-09)3 Contents Intellectual Property Rights 6g3Foreword . 6g3Modal verbs terminology 6g3Introduction 6g3
9、1 Scope 7g32 References 7g32.1 Normative references . 7g32.2 Informative references 8g33 Definitions, symbols and abbreviations . 8g33.1 Definitions 8g33.2 Symbols 9g33.3 Abbreviations . 9g34 Introduction to Reverse Power Feed 11g35 Reverse Power Feed Architecture 12g35.1 Basics of RPF . 12g35.2 Rev
10、erse Power Feed and POTS Co-Existence . 12g35.2.1 Overview 12g35.2.2 POTS Adapters . 13g35.2.2.1 General 13g35.2.2.2 POTS Adapter - E (POTSA-E) . 13g35.2.2.3 POTS Adapter - C (POTSA-C) . 13g35.2.2.4 POTS Adapter - D (POTSA-D) 13g35.3 Reverse Power Feed Architecture without POTS on the same pair (RPF
11、A-NOP). 14g35.4 Reverse Power Feed Architecture with Baseband POTS from the Exchange (RPFA-EXP) 15g35.5 Reverse Power Feed Architecture with Baseband POTS from the Exchange Sharing the in-premises Wiring (RPFA-EXPSW) 17g35.6 Reverse Power Feed Architecture with Derived POTS (RPFA-DRP) . 18g35.7 Reve
12、rse Power Feed Architecture with Derived POTS Sharing the in-premises Wiring (RPFA-DRPSW) 19g35.8 Reverse Power Feed Architecture without POTS and with Broadband Bypass (RPFA-NOPBB) . 20g36 Reverse Power Feed Start-Up Protocol 21g36.1 Introduction 21g36.1.1 General 21g36.1.2 Start-up in presence of
13、MELT signature . 23g36.2 Metallic Detection based Start-Up (MDSU) Protocol 24g36.2.1 Signature detection . 24g36.2.2 DPU classification using MDSU protocol 27g36.2.3 Start-up Sequence diagram . 29g36.2.4 Start-up flow chart 29g36.2.5 POTS RCR Protocol (PRP) - Optional extension of MDSU 31g36.2.5.1 P
14、RP definition . 31g36.2.5.2 PRP electrical specifications . 37g36.2.5.2.1 PSE electrical specification for PRP 37g36.2.5.2.2 DPU electrical specification for PRP 38g36.2.5.3 Interoperability between “PRP capable“ and “non PRP capable devices“ 38g36.3 RPF Dying Gasp and Indication Primitives . 39g36.
15、4 RPF Operations and Maintenance 40g37 Reverse Power Feed Characteristics 41g37.1 Safety Aspects 41g37.1.1 Background . 41g37.1.2 Unintended consequences . 41g37.2 RPF Range Options and Classes 41g37.3 Electrical reference model 43g3ETSI ETSI TS 101 548 V2.1.1 (2016-09)4 7.4 Zero touch DPU . 45g37.5
16、 PSE and DPU PE electrical specification . 49g37.5.1 PSE electrical specification. 49g37.5.1.1 PSE electrical specification on interface U-R2P . 49g37.5.2 DPU electrical specification . 50g37.5.2.1 Reach Resistance definition 50g37.5.2.2 DPU electrical specification at U-O interface . 51g37.6 Micro-
17、interruption requirements 52g37.6.1 PSE micro-interruption requirements . 52g37.6.2 DPU micro-interruption specification . 52g38 Power Splitter Characteristics 53g38.1 General . 53g38.2 Power Splitter class definition 54g38.3 Description of Power Splitter Use Cases 55g38.3.1 General 55g38.3.2 DPU -
18、case 1: No POTS service sharing the loop wiring. 55g38.3.3 DPU - case 2: With POTS service from the exchange. . 55g38.3.4 DPU - case 3: With a Derived POTS service sharing the wiring. . 56g38.3.5 CPE - case 1: No POTS service sharing the loop wiring. . 57g38.3.6 CPE - case 2: With POTS service from
19、the exchange. . 57g38.3.7 CPE - case 3: With a derived POTS service sharing the wiring. 58g38.4 Power Splitter Requirements 59g38.4.1 General 59g38.4.2 DSL Insertion Loss . 59g38.4.3 DSL Impedance Conversion . 60g38.4.4 DSL-Band Noise Attenuation . 61g38.4.5 DSL Port DC Isolation Resistance 61g38.4.
20、6 POTS Measurement Procedure . 61g38.4.7 POTS Insertion Loss . 62g38.4.8 POTS Impedance Conversion . 63g38.4.9 POTS-band longitudinal Balance . 64g38.4.10 POTS-band Noise Attenuation . 65g38.4.11 POTS DC Isolation Resistance . 65g38.4.12 Tolerance to DC Feed . 65g38.4.13 Tolerance to Ringing 66g38.4
21、.14 Power Drain 67g39 POTS Adapter Characteristics 68g39.1 Introduction 68g39.2 Description of POTS Adapters Use Cases . 69g39.2.1 General 69g39.2.2 DPU - case 1: No POTS service sharing the loop wiring . 69g39.2.3 DPU - case 2: With a POTS service from the exchange - Adapter-E . 69g39.2.4 DPU - cas
22、e 3: With a derived POTS service sharing the wiring . 70g39.2.5 CPE - case 1: No POTS service sharing the loop wiring 70g39.2.6 CPE - case 2: With a POTS service from the exchange - Adapter-C . 70g39.2.7 CPE - case 2: With a POTS service from the exchange - Adapter-D . 70g39.2.8 CPE - case 3: With d
23、erived POTS sharing the wiring - Adapter-D 71g39.2.9 CPE - case 3: With derived POTS sharing the wiring - Adapter-E 72g39.3 POTS Adapter Requirements . 72g39.3.1 General 72g39.3.2 DSL Insertion Loss . 72g39.3.3 DSL Impedance Conversion . 73g39.3.4 DSL-band Noise Generation . 73g39.3.5 POTS Measureme
24、nt Procedure . 73g39.3.6 POTS Insertion Loss . 75g39.3.7 POTS Impedance Conversion . 76g39.3.8 POTS-band longitudinal Balance . 77g39.3.9 Signalling Channel Noise . 78g39.3.10 POTS DC Isolation Resistance . 78g39.3.11 Ringing Detection . 79g3ETSI ETSI TS 101 548 V2.1.1 (2016-09)5 9.3.12 Ringing Gene
25、ration . 80g39.3.13 DC Feed Detection 80g39.3.14 DC Feed Generation . 81g39.3.15 Hook Switch . 81g39.3.16 Hook State Detection 81g39.3.17 Bypass Mode 82g39.3.18 Power Drain 82g39.4 Out of Band Signalling Channel . 83g3Annex A (informative): Reverse power backup systems 84g3A.1 Case 1 battery backup
26、in the CPE 84g3A.2 Case 2 battery backup in the DPU and CPE . 84g3Annex B (normative): General POTS requirements 85g3Annex C (informative): RPF Noise Limits For Common Mode. 86g3C.1 Introduction 86g3C.2 Derivation . 86g3C.3 Cable Balance Model and Common Mode PSD Construction. 86g3C.4 Measurement En
27、vironment 86g3Annex D (informative): Out-of-Band Signalling Channel 88g3Annex E (normative): PRP PSE low level flow charts 90g3E.1 General . 90g3E.2 Perform MDSU 91g3E.3 POTS RCR MDSU Error Handler . 92g3E.4 PSE Reverse Power Active 93g3E.5 Perform POTS RCR . 94g3E.6 Send PRP Trigger . 95g3E.7 Set I
28、nitial State . 96g3E.8 Send Enable Trigger to POTS Adapter 97g3Annex F (informative): Timing for Dying Gasp Signalling 98g3Annex G (informative): Long Range RPF Classification 99g3Annex H (informative): Bibliography . 100g3Annex I (informative): Change History 101g3History 102g3ETSI ETSI TS 101 548
29、V2.1.1 (2016-09)6 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 found in ETSI SR 000 314: “Int
30、ellectual 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 (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, inc
31、luding 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. Foreword This Technical Specification (TS)
32、has been produced by ETSI Technical Committee Access, Terminals, Transmission and Multiplexing (ATTM). Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause
33、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 various Operators consider the deployment of fibre-fed remote nodes that contain xDSL DSLAM equipment, it is
34、 necessary to consider the means of powering such remotely located equipment. One such method, known as “reverse power feed“, transmits the power from the customer premises to the fibre-fed remote node using the distribution-side copper network. The present document defines a reverse power feed tran
35、smission standard which allows Operators to source suitably compliant equipment for inclusion in their networks. The reverse power feed methodology can be used to power a remote node hosting any metallic transmission system (e.g. G.fast i.4, VDSL2 i.3, etc.). ETSI ETSI TS 101 548 V2.1.1 (2016-09)7 1
36、 Scope The present document defines architectures and specifications for reverse powering of remote network nodes from one or multiple CPEs. The architectures describe how to combine reverse power feed with the data only, VoIP and POTS line services. Start-up protocols are defined to ensure proper i
37、nteraction between the line services and the reverse power system. Operations and maintenance requirements for managing the reverse power feed and power combining within the remote network node are specified. The present document also identifies power splitter and POTS Adapter requirements. 2 Refere
38、nces 2.1 Normative 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 version applies. For non-specific references, the latest version of the referenced document (including any
39、 amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at https:/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 validi
40、ty. The following referenced documents are necessary for the application of the present document. 1 ETSI ES 202 971: “Access and Terminals (AT); Public Switched Telephone Network (PSTN); Harmonized specification of physical and electrical characteristics of a 2-wire analogue interface for short line
41、 interface“. 2 CENELEC EN 60950-1: “Information Technology Equipment - Safety, Part 1: General requirements (IEC 60950-1:2005 + Cor.:2006 + A1:2009, modified)“. 3 ETSI ES 203 021: “Access and Terminals (AT); Harmonized basic attachment requirements for Terminals for connection to analogue interfaces
42、 of the Telephone Networks; Update of the technical contents of TBR 021, EN 301 437, TBR 015, TBR 017“. 4 Broadband Forum: “TR-301 Architecture and Requirements for Fiber to the Distribution Point“, Issue 1. 5 Broadband Forum: “TR-286 Testing of Metallic Line Testing (MELT) functionality on xDSL Por
43、ts“. 6 IEC 61000-4-11: “Testing and measuring techniques - Voltage dips, short interruptions and voltage variations immunity tests“. 7 ETSI TS 101 952-1: “Access network xDSL splitters for European deployment; Part 1: Generic specification of xDSL over POTS splitters“. ETSI ETSI TS 101 548 V2.1.1 (2
44、016-09)8 2.2 Informative 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 version applies. For non-specific references, the latest version of the referenced document (includi
45、ng any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are not necessary for the application of the present document but they assist the user with regard
46、to a particular subject area. i.1 Void. i.2 NICC ND 1645 (V1.1.2) (2011-06): “NGA Telephony; Architecture and requirements“. NOTE: Available at http:/www.niccstandards.org.uk/files/current/ND1645v1.1.2.pdf?type=pdf. i.3 Recommendation ITU-T G.993.2: “Very high speed digital subscriber line transceiv
47、ers 2 (VDSL2)“. i.4 Recommendation ITU-T G.9700: “Fast access to subscriber terminals (G.fast) - Power spectral density specification“. i.5 Recommendation ITU-T G.9701: “Fast access to subscriber terminals (G.fast) - Physical layer specification“. i.6 ETSI TS 101 271 (V1.2.1): “Access, Terminals, Tr
48、ansmission and Multiplexing (ATTM);Access transmission systems on metallic access cables; Very High Speed digital subscriber line system (VDSL2) Recommendation ITU-T G.993.2 modified“. i.7 Recommendation ITU-T G.998.4, Annex E: “Low Power Mode operation with ITU-T G.993.2 and G.993.5“. i.8 Recommend
49、ation ITU-T G.9701, Amendment 1 (2014): “Support of Low power operation and all functionality necessary to allow transceivers to be deployed as part of reverse powered (and possibly battery operated) network equipment“. i.9 Recommendation ITU-T G.992.5: “Asymmetric digital subscriber line 2 transceivers (ADSL2)- Extended bandwidth ADSL2 (ADSL2plus)“. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: bypass mode: operational state of the POTS adapt
