1、INTERNATIONAL STANDARD ISO/IEC 11801 Second edition 2002-09 Information technology Generic cabling for customer premises Reference number ISO/IEC 11801:2002(E)INTERNATIONAL STANDARD ISO/IEC 11801 Second edition 2002-09 Information technology Generic cabling for customer premises PRICE CODE ISO/IEC 2
2、002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. ISO/IEC Copyright Office Case postale 56 CH-12
3、11 Genve 20 Switzerland For price, see current catalogueXB 2 11801 ISO/IEC:2002(E) CONTENTS FOREWORD .10 INTRODUCTION .11 1 Scope .13 2 Normative references13 3 Definitions, abbreviations and symbols .17 3.1 Definitions .17 3.2 Abbreviations.23 3.3 Symbols 24 3.3.1 Variables .24 3.3.2 Indices.25 4 C
4、onformance 25 5 Structure of the generic cabling system 26 5.1 General .26 5.2 Functional elements.26 5.3 Cabling subsystems.27 5.3.1 General27 5.3.2 Campus backbone cabling subsystem27 5.3.3 Building backbone cabling subsystem28 5.3.4 Horizontal cabling subsystem.28 5.3.5 Design objectives.28 5.4 I
5、nterconnection of subsystems.29 5.4.1 General29 5.4.2 Centralised cabling architecture.30 5.5 Accommodation of functional elements30 5.6 Interfaces 30 5.6.1 Equipment interfaces and test interfaces30 5.6.2 Channel and permanent link 32 5.6.3 External network interface32 5.7 Dimensioning and configur
6、ing32 5.7.1 Distributors 32 5.7.2 Cables .34 5.7.3 Work area cords and equipment cords .34 5.7.4 Patch cords and jumpers .34 5.7.5 Telecommunications outlet (TO) 35 5.7.6 Consolidation point 36 5.7.7 Telecommunications rooms and equipment rooms .36 5.7.8 Building entrance facilities .36 5.7.9 Extern
7、al services cabling .36 6 Performance of balanced cabling37 6.1 General .37 6.2 Layout .38 6.3 Classification of balanced cabling39 6.4 Balanced cabling performance.39 6.4.1 General3911801 ISO/IEC:2002(E) 3 6.4.2 Return loss 39 6.4.3 Insertion loss/attenuation.40 6.4.4 NEXT.41 6.4.5 Attenuation to c
8、rosstalk ratio (ACR) .44 6.4.6 ELFEXT.45 6.4.7 Direct current (d.c.) loop resistance .47 6.4.8 Direct current (d.c.) resistance unbalance48 6.4.9 Current carrying capacity.48 6.4.10 Operating voltage 48 6.4.11 Power capacity 48 6.4.12 Propagation delay48 6.4.13 Delay skew 49 6.4.14 Unbalance attenua
9、tion .49 6.4.15 Coupling attenuation50 7 Reference implementations for balanced cabling 50 7.1 General .50 7.2 Balanced cabling .50 7.2.1 General50 7.2.2 Horizontal cabling 50 7.2.3 Backbone cabling.54 8 Performance of optical fibre cabling55 8.1 General .55 8.2 Component choice.55 8.3 Channel atten
10、uation.56 8.4 Channel topology.56 8.5 Propagation delay58 9 Cable requirements.58 9.1 General .58 9.2 Balanced cables 58 9.2.1 Basic performance requirements58 9.2.2 Additional requirements .59 9.2.3 Additional performance requirements for flexible cables.60 9.3 Additional crosstalk considerations f
11、or cable sharing in balanced cables .60 9.3.1 General60 9.3.2 Power summation in backbone cables60 9.3.3 Hybrid, multi-unit and cables connected to more than one TO60 9.4 Optical fibre cables61 9.4.1 Optical fibre types61 9.4.2 Generic performance requirements 61 9.4.3 Multimode optical fibre cable6
12、1 9.4.4 Single-mode optical fibre cables 62 10 Connecting hardware requirements.62 10.1 General requirements 62 10.1.1 Applicability .62 10.1.2 Location.63 10.1.3 Design .63 10.1.4 Operating environment.63 10.1.5 Mounting63 4 11801 ISO/IEC:2002(E) 10.1.6 Installation practices 63 10.1.7 Marking and
13、colour coding .64 10.2 Connecting hardware for balanced cabling 64 10.2.1 General requirements 64 10.2.2 Performance marking.64 10.2.3 Mechanical characteristics.64 10.2.4 Electrical characteristics 66 10.2.5 Telecommunications outlet requirements .72 10.2.6 Design considerations for installation.73
14、 10.3 Optical fibre connecting hardware74 10.3.1 General requirements 74 10.3.2 Marking and colour coding .74 10.3.3 Mechanical and optical characteristics .74 10.3.4 Telecommunications outlet requirements .75 10.3.5 Connection schemes for optical fibre cabling .75 11 Screening practices 77 11.1 Gen
15、eral .77 11.2 Electromagnetic performance 77 11.3 Earthing.78 12 Administration.78 13 Balanced cords.78 13.1 Introduction .78 13.2 Insertion loss.78 13.3 Return loss 79 13.4 NEXT.79 Annex A (normative) Balanced permanent link and CP link performance82 A.1 General 82 A.2 Performance.82 A.2.1 General8
16、2 A.2.2 Return loss 83 A.2.3 Insertion loss/attenuation.84 A.2.4 NEXT.85 A.2.5 Attenuation to crosstalk ratio (ACR) .88 A.2.6 ELFEXT.89 A.2.7 Direct current (d.c.) loop resistance .92 A.2.8 Direct current (d.c.) resistance unbalance93 A.2.9 Propagation delay93 A.2.10 Delay skew 94 Annex B (normative
17、) Test procedures 96 B.1 General 96 B.2 Channel and link performance testing .96 B.2.1 Testing balanced cabling channels, permanent links and CP links .96 B.2.2 Testing optical fibre cabling channels 96 B.2.3 Channel and link test schedules.96 B.3 Transmission testing of cords for balanced cabling .
18、97 B.4 Transmission testing of components for cabling98 B.4.1 Transmission testing of copper cables for balanced cabling.9811801 ISO/IEC:2002(E) 5 B.4.2 Transmission testing of connecting hardware for balanced cabling 98 B.4.3 Transmission testing of cables for optical cabling.98 B.4.4 Transmission
19、testing of connectors for optical cabling98 Annex C (normative) Mechanical and environmental performance testing of connecting hardware for balanced cabling 99 C.1 Introduction.99 C.2 Test requirements.99 C.2.1 General99 C.2.2 Initial test measurements .99 C.2.3 Environmental and mechanical performa
20、nce100 Annex D (informative) Electromagnetic characteristics 104 Annex E (informative) Acronyms for balanced cables 105 Annex F (informative) Supported applications 107 F.1 Supported applications for balanced cabling .107 F.2 Supported applications for optical fibre cabling .109 Annex G (informative
21、) Channel and permanent link models for balanced cabling .113 G.1 General 113 G.2 Insertion loss 113 G.2.1 Insertion loss of the channel configuration .113 G.2.2 Insertion loss of the permanent link configurations.114 G.2.3 Assumptions for insertion loss .114 G.3 NEXT115 G.3.1 NEXT of the channel co
22、nfiguration.115 G.3.2 NEXT of the permanent link configurations 115 G.3.3 Assumptions for NEXT.116 G.4 ELFEXT119 G.4.1 ELFEXT of the channel configuration.119 G.4.2 ELFEXT for the permanent link configurations .119 G.4.3 Assumptions for ELFEXT .120 G.5 Return loss .120 G.5.1 Return loss of the chann
23、el and permanent link configurations120 G.5.2 Assumptions for the return loss circuit analysis method .121 Annex H (informative) Class F channel and permanent link with two connections.124 Annex I (informative) Significant changes to balanced cabling requirements with respect to earlier editions of
24、this International Standard125 I.1 General 125 I.2 References .125 I.3 Structural elements.125 I.4 Product designation125 I.5 Component requirements125 I.6 Installed cabling requirements 126 Bibliography132 6 11801 ISO/IEC:2002(E) Figure 1 Structure of generic cabling27 Figure 2 Hierarchical structu
25、re of generic cabling.29 Figure 3 Structures for centralised generic cabling.29 Figure 4 Accommodation of functional elements.30 Figure 5 Interconnect models .31 Figure 6 Cross-connect models31 Figure 7 Equipment and test interfaces 31 Figure 8 Example of a generic cabling system with combined BD an
26、d FD.33 Figure 9 Inter-relationship of functional elements in an installation with redundancy.34 Figure 10 Channel, permanent link and CP link of a balanced cabling37 Figure 11 Example of a system showing the location of cabling interfaces and extent of associated channels 38 Figure 12 Horizontal ca
27、bling models.52 Figure 13 Backbone cabling model.54 Figure 14 Combined backbone/horizontal channels57 Figure 15 Eight-position outlet pin and pair grouping assignments (front view of connector).73 Figure 16 Duplex SC connectivity configuration76 Figure 17 Optical fibre patch cord 77 Figure A.1 Link
28、options 82 Figure E.1 Cable naming schema105 Figure E.2 Cable types.106 Figure G.1 Example of computation of NEXT with higher precision.116 Figure H.1 Two connection channel and permanent link.124 Figure I.1 Horizontal cabling model 127 Figure I.2 Backbone cabling model.12711801 ISO/IEC:2002(E) 7 Ta
29、ble 1 Maximum channel lengths .32 Table 2 Return loss for channel40 Table 3 Informative return loss values for channel at key frequencies 40 Table 4 Insertion loss for channel.41 Table 5 Informative insertion loss values for channel at key frequencies 41 Table 6 NEXT for channel 42 Table 7 Informati
30、ve NEXT values for channel at key frequencies42 Table 8 PS NEXT for channel.43 Table 9 Informative PS NEXT values for channel at key frequencies 43 Table 10 Informative ACR values for channel at key frequencies44 Table 11 Informative PS ACR values for channel at key frequencies45 Table 12 ELFEXT for
31、 channel.46 Table 13 Informative ELFEXT values for channel at key frequencies46 Table 14 PS ELFEXT for channel.47 Table 15 Informative PS ELFEXT values for channel at key frequencies 47 Table 16 Direct current (d.c.) loop resistance for channel.47 Table 17 Propagation delay for channel .48 Table 18
32、Informative propagation delay values for channel at key frequencies .49 Table 19 Delay skew for channel49 Table 20 Unbalance attenuation for channel.50 Table 21 Horizontal link length equations .53 Table 22 Backbone link length equations .55 Table 23 Channel attenuation.56 Table 24 Basic requirement
33、s of balanced cables58 Table 25 Mechanical characteristics of balanced cables.59 Table 26 Optical fibre cable attenuation .61 Table 27 Multimode optical fibre modal bandwidth62 Table 28 Mechanical characteristics of connecting hardware for use with balanced cabling.65 Table 29 Electrical characteris
34、tics of telecommunications outlets intended for use with balanced cabling 67 Table 30 Return loss 68 Table 31 Insertion loss .68 Table 32 Near end crosstalk (NEXT) 68 Table 33 Power sum near end crosstalk (PS NEXT).69 Table 34 Far end crosstalk (FEXT).69 Table 35 Power sum far end crosstalk (PS FEXT
35、 .70 Table 36 Input to output resistance 70 Table 37 Input to output resistance unbalance .70 Table 38 Current carrying capacity.71 Table 39 Propagation delay71 Table 40 Delay skew71 8 11801 ISO/IEC:2002(E) Table 41 Transverse conversion loss (TCL) f.f.s.71 Table 42 Transfer impedance (screened conn
36、ectors only)72 Table 43 Insulation resistance72 Table 44 Voltage proof.72 Table 45 Matrix of backward compatible mated modular connector performance73 Table 46 Mechanical and optical characteristics of optical fibre connecting hardware.75 Table 47 Minimum return loss for balanced cords.79 Table 48 I
37、nformative values of return loss at key frequencies for Category 5, 6 and 7 cords.79 Table 49 Informative values of NEXT at key frequencies for Category 5, 6 and 7 cords.81 Table A.1 Return loss for permanent link or CP link83 Table A.2 Informative return loss values for permanent link with maximum
38、implementation at key frequencies 83 Table A.3 Insertion loss for permanent link or CP link 84 Table A.4 Informative insertion loss values for permanent link with maximum implementation at key frequencies 85 Table A.5 NEXT for permanent link or CP link 86 Table A.6 Informative NEXT values for perman
39、ent link with maximum implementation at key frequencies.86 Table A.7 PS NEXT for permanent link or CP link.87 Table A.8 Informative PS NEXT values for permanent link with maximum implementation at key frequencies 88 Table A.9 Informative ACR values for permanent link with maximum implementation at k
40、ey frequencies.89 Table A.10 Informative PS ACR values for permanent link with maximum implementation at key frequencies 89 Table A.11 ELFEXT for permanent link or CP link 90 Table A.12 Informative ELFEXT values for permanent link with maximum implementation at key frequencies 91 Table A.13 PS ELFEX
41、T for permanent link or CP link.92 Table A.14 Informative PS ELFEXT values for permanent link with maximum implementation at key frequencies 92 Table A.15 Direct current (d.c.) loop resistance for permanent link or CP link.93 Table A.16 Informative d.c. loop resistance for permanent link with maximu
42、m implementation93 Table A.17 Propagation delay for permanent link or CP link .94 Table A.18 Informative propagation delay values for permanent link with maximum implementation at key frequencies 94 Table A.19 Delay skew for permanent link or CP link95 Table A.20 Informative delay skew for permanent
43、 link with maximum implementation 95 Table B.1 Cabling characteristics of copper and optical fibre cabling for acceptance, compliance and reference testing97 Table C.1 Group P .100 Table C.2 Group A .101 Table C.3 Group B .102 Table C.4 Group C .10311801 ISO/IEC:2002(E) 9 Table C.5 Group D .103 Tabl
44、e F.1 Applications using balanced cabling .108 Table F.2 Modular connector pin assignment for applications.109 Table F.3 Supported applications using optical fibre cabling.110 Table F.4 Maximum channel lengths supported by optical fibre applications for multimode fibre .111 Table F.5 Maximum channel
45、 length supported by optical fibre applications for single- mode fibres.112 Table G.1 Insertion loss deviation. .114 Table H.1 ACR and PS ACR values for 2 connection class F channels and permanent links at key frequencies .124 Table I.1 Principal transmission performance requirements of 150 connecti
46、ng hardware.126 Table I.2 Minimum return loss limits for links, permanent links and channels for the different cabling classes128 Table I.3 Maximum attenuation limits for links, permanent links and channels for the different cabling classes128 Table I.4 Minimum NEXT limits for links, permanent links
47、 and channels for the different cabling classes129 Table I.5 Minimum ACR limits for links, permanent links and channels for the different cabling classes129 Table I.6 Maximum propagation delay limits for links, permanent links and channels for the different cabling classes.130 Table I.7 Maximum d.c.
48、 loop resistance limits for links, permanent links and channels for the different cabling classes.130 Table I.8 Minimum unbalance attenuation (LCL/LCTL) limits for links, permanent links and channels for the different cabling classes .130 Table I.9 Minimum PS NEXT, PS ACR, ELFEXT and PS ELFEXT limit
49、s for permanent links and channels for the different cabling classes131 Table I.10 Maximum delay skew limits for permanent links and channels for the different cabling classes131 10 11801 ISO/IEC:2002(E) INFORMATION TECHNOLOGY GENERIC CABLING FOR CUSTOMER PREMISES FOREWORD 1) ISO (International Organi
