ISO/IEC 11801:1995

ISOAEC
INTERNATIONAL
STANDARD .
First edition
1995-05-3 1
Corrected and reprinted
1995-07-l 5
Information technology -
Generic cabling for customer premises
Technologies de /‘information -
Cab/age g&Grique des locaux d’utiiisateurs

ISOAEC 11801:1995(E)
Contents
. . .
VIII
Foreword
~mmmmmmmmmmmmmmmmmmmmmmmammmmmmmmmm~~mmmmmmmmm~~mmmmmmmmmmmmmmmmmmmmmm~mmmmmmmm~mmmmommmmmm~mmmm~mmmm~mmmmmm~9~~*~~~m~mmm~~m~mmmamm~mmmmmm~mm~
1 Scope mmm*mm****m*mm***m***m*aaaaammmammmaaaaaaaaamammmmmmama*****mm**************************m****mm************************m**************mm****
mmmmomommmmmmommmmmmmmmmmmmmmmmommmmmmmmmmmmmmmmmmmmmmmm~mmm~mmmm8~mmmmm~mmmmmmmmmmmmmmmmmmaemmmmmmmmmmmmmmmmmmmmm
2 Normative references
3 Definitions and abbreviations mmmaaa*mmmmamaaaaammmaaaaaamamm********mm******mmm*mm*mm******m**********mmm*****m**m*********m**maa
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
3.1 Definitions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Abbreviations
4 Conformance mm8mmmmmmmmmmmmmmmmmmmmmmmmmwom*mmmmmmmmmmmmammmommommommmmmmmmmmmmm~mmmmmomommmmmmmmmmmmmmmmmmmmmmmmmmmmmmommmmmmmmmmmmmmmmmmmm
mmmmmmmmmmmwmm~mmmmmmmmmmmmmmmmmmmmmmmammmmommmmmmmmmmmmmmmmmmmmmommmmmmmmmmmmmmmmm
5 Structure of the generic cabling system
5.1 Structure .
51.1 Functional elements .
...................................................................................................
51.2 Cabling subsystems
.....................................................................
51.3 Campus backbone cabling subsystem
.....................................................................
5.1.4 Building backbone cabling subsystem
IO
...................................................................................
5.1.5 Horizontal cabling subsystem
5.1.6 Work area cabling .
5.2 Overall structure .
...........................................................................................................
5.3 Location of distributors
...............................................................................
5.4 Interfaces to the generic cabling system
...........................................................................................
5.4.1 Public network interface
5.5 Dimensioning and configuring .
........................................................................................................
5.5.1 Floor distributor
................................. 15
5.5.2 Preferred cable types for pre-cabling and recommended use
.....................................................................................
5.5.3 Telecommunications outlets
................................................
5.5.4 Telecommunications closets and equipment rooms
5.5.5 Building entrance facilities .
5.6 Electromagnetic compatibility .
5.7 Earthing and bonding .
6 Implementation mmmmmmm0mmmmmmmmmmmmmmommommmmmmmommmmmmmmmmmmmwmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmommmmmmmmmmmmmmmmmmommmmmmmmmmmmmmmmmmmm
6.1 Horizontal cabling .
.................................................................................................
6.1.1 Horizontal distances
6.1.2 Choosing cable types .
6.1.3 Configuring TOs .
6.2 Backbone cabling .
6.2.1 Physical topology .
...............................................................................................
6.2.2 Choosing cable types
.....................................................................................
6.2.3 Backbone cabling distances
@ ISO/lEC 1995
All rights reserved. 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.
lSO/lEC Copyright Office 0 Case Postale 131 0 CH-1211 Genbe 20 l Switmland
Printed in Switzerland
ii
ISOAEC 11801:1995(E)
Link specifications
7 **m*****aa*~.~aaammaaaaaaaaaaaaa*aa88888aaaam**m*****mmaamaa8****mm**aa**aamam************************************* 23
7.1 Classification of applications and links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.1 Application classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.*=. 24
.
7.1.2 Link classification ,.*=*=~. 24’
7.2 Balanced cabling links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-.
7.2.1 Characteristic impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.2 Return loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.3 Attenuation *. 26
7.2.4 Near-end crosstalk loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.2.5 Attenuation to crosstalk loss ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.2.6 DC resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.7 Propagation delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.8 Longitudinal to differential conversion loss (balance)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.2.9 Transfer impedance of shield . 29
7.3 Optical fibre links . 30
7.3.1 Optical attenuation . 30
7.3.2 Multimode modal bandwidth . 31
7.3.3 Return loss . 31
7.3.4 Propagation delay . 31
8 Cable requirements
mmmmmmaammmmmmammammmmmomm*mamaaa*maaa*mmmm*m*mmmomommm*mm*mm**m*mm*m*m*****m*momm******m****m**o***m*m***o****m**m 32
8.1 General requirements for 100 Sz and 120 Sz balanced cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. 33
8.1 .l Additional requirements for 100 f2 balanced
cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.1.2 Additional requirements for 120 a balanced cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2 General requirements for 150 Sz balanced cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.3 Additional crosstalk considerations for balanced cables
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.3.1 Power summation
. . . . . . . . . . . . . . . . . . . . . . .~.~. 39
8.3.2 Hybrid and multi-unit cables and cables connected to multiple TOs.
...................... 39
8.4 Multimode optical fibre cables . 40
8.5 Singlemode optical fibre cables
............................................................................................. 40
Connecting hardware requirements maa*aamm*m*m*m****m*m*mm*mm*mmm~**mmmmmm**m****mmmmmm******mmmmmm*mm*******mmmmmm***m*** 41
9.1 General requirements .
9.1.1 Location .
9.1.2 Design .
9.1.3 Operating environment
............................................................................................. 42
9.1.4 Mounting
................................................................................................................... 42
9.1.5 Cross-connect jumpers and patch cords
.................................................................. 42
9.1.6 Installation practices . 43
9.1.7 Marking and wlour coding .
9.2 Connecting hardware for 100 In and 120 Sz cabling .
9.2.1 General requirements .
9.2.2 Performance marking .
9.2.3 Mechanical characteristics .
9.2.4 Electrical characteristics . 45
9.2.5 Telecommunications outlet requirements . 46
9.2.6 Installation practices .
9.3 Connecting hardware for 150 Sz cabling . 47
9.3.1 General requirements . 47
9.3.2 Performance marking . 47

ISOIIEC 11801:1995(E)
.......................................................................................
9.3.3 Mechanical characteristics
...........................................................................................
9.3.4 Electrical characteristics
.................................................................
9.3.5 Telecommunications outlet requirements
.................................................................................................
9.3.6 Installation practices
.........................................................................................
9.4 Optical fibre connecting hardware
...............................................................................................
9.4.1 General requirements
....................................................................................... 49
9.4.2 Marking and wlour coding
..................................................................... 49
9.4.3 Mechanical and optical characteristics
................................................................. 50
9.4.4 Telecommunications outlet requirements
..................................................................
9.4.5 Cross-connect jumpers and patch cords
..........................................................................................
9.4.6 Optical fibre connectivity
10 mmmmaaaaaa*mmaammmmammmm*****m*mmmmm*aaaammama*a*****m**m*mmmmm******mm*m***mm*m**mm*m*m***m*m**m*m***m*********m*mm
Shielding practices
.....................................................................................................................................
10.1 EMC
............................................................................................................................
10.2 Grounding
mmmmmm*mmm*mmmmm*mmm*mmm*mm*m*mmammmmmmmmmmmmmaaaaam*aaamm*mma*m*mmmmmmm**mm*m*mmmmmmmmmmmmmm*mm*mm*mm*m*mm*mm*m**m*mmmmmmm
11 Administration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .~.
11 .l Scope of administration
11.2 Identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11.3 Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11.3.1 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Annexes
A m***emmmmo**mmmmmmm*mmmmmmmmmamommmm**mm****m************mm***m****mmmmmme*mmmmm*mmmm*mmm****m*m*mmmmmmmmm*mm***mm**mmmmm
Test procedures
.......................................................................................................
A.1 Link performance testing
.................................................................................
A.1 .l Testing balanced cabling links
.............................................................................
A.l.2 Testing optical fibre cabling links
A.l.3 Link tests .
......................................
A.2 Transmission testing of connecting hardware for balanced cabling
A.2.1 Purpose and scope .
A.2.2 Applicability .
A.2.3 Test parameters .
......................... 61
A.2.4 Transmission testing of connecting hardware for balanced cables
............... .64
A.3 Termination procedure and setup verification for modular jack and plug testing.
................................................................................................
A.3.1 Test plug termination
..............................................................................
A.3.2 Balun and test plug qualification
.......................................................................
A.3.3 Typical TO measurement procedure
l m*m*mm*m*************mmm***m*mm*m*m*mmm*
B Reliability testing of connecting hardware for balanced cabling
B. 1 Introduction .
8.2 Contact resistance measurement .
..............................................................................................................
B.3 Insulation resistance
...............................................................................................................................
8.4 Durability
B.5 Vibration .
B.6 Stress relaxation .
B.7 Thermal shock .
...................................................................................................
B.8 Humidity/temperature cycle
...................................................................................................................
B.9 Corrosion testing
l ****mmm*m***mm*****a*aaaaaamaaaamaa 73
C Requirements for flexible 100 Q 120 n and 150 Sz balanced cables
C. 1 General requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iv
lSO/IEC 11801:1995(E)
C.2 Additional requirements for 150 Sn flexible cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D
Topology ********m****m*mm***mmmmm**am**ammmmmmmmmaaamamammmmmmmmm8mmmaaaam**a*********m**************a*mm*mmm*****m*0m*mm**mm**mmmm******aaaa 75
D. 1 Common topologies .
D. 1.1 Network topology
..................................................................................................... 75
0.2 Configurations . 76
0.3 Application of the structured framework . 77
E Acronyms for balanced cables mmmmmmmmmaaaammmama******a*amamaa*mmmm*a***aammmmm**a****mmammm*am*mammmmm*mmmmmmmmmm*ammmmmmmma 79
F Tutorial on link performance mamamamaamaaaaaamaaa*****mmmm*m*a*mamaam*a*mmaaaaa***m***mmmm****am**mmm*******m*a**m**maa*****m*mmm
F. 1 Balanced cable transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
F. 1.1 Link parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
F.1.2 Link parameter values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
F.2 Optical cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
G Supported applications mmmmm*mommmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmammmmmm*mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
H Fibre optic connectivity planning guide
mmmmmammmmmmmmmmmmmmmmma*mammmmm***mmmmmmmmmmmmmmmammmmmmmmmmmmmmmmmmmmmmmmmmmmamm 86
H. 1 Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. 86
H.2 General recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
H.3 Connectivity options at the TO . 87
H-3.1 Duplex SC connectivity configuration .
H-3.2 Simplex BFOC/2,5 connectivity configuration .
H.3.3 Simplex BFOC/2,5-to-Duplex SC (hybrid) connectivity configuration
...................... 88
J Bibliographical references
mmmmmmmmmmm*mmmmmmmmmmmmmmmmommmmmmmmm*mmmmmmmmmommmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm 89
V
ISOAEC 11801:1995(E)
Figures
l- Structure of generic cabling .
2- Inter-relationship of functional elements .
39 .
Example of the generic cabling system
................................................................................
4- Typical accommodation of functional elements
..............................................................................................
5- Potential interfaces to generic cabling
....................................................................................................................
6- Maximum cable lengths
........................................................................................................
7a - Horizontal link model - copper
......................................................................................................
7b - Horizontal cabling model - fibre
................................................................................
7 - Horizontal cabling models for copper and fibre
..........................................................................................
8 - Typical horizontal and work area cabling
9 - Backbone star topology .
. 10 - Maximum backbone distances .
11 - Example of a system showing the location of cabling interfaces and the extent of
associated links .
................................................................... 46
12 - Eight position jack pin and pair grouping assignments
A. 1 - Measurement configuration .
A.2 - Calibration configuration .
A.3 - Calibration .
......................................................................................................................................
A.4 - Test setup
A.5 - Balun and test lead attenuation measurement .
.....................................................................................
A.6 - Attenuation measurement using resistors
........................................................................
A.7 - Balanced test leads and jacket prior to untwisting
...............................................................
A.8 - Balanced test leads and jacket prior to plug termination
A.9 - Completed test plug .
measurement 67
A. 10 - Test plug qualification .
........................................................................................ 68
A.1 1 - Typical TO NEXT measurement setup
8.1 - Reliability test programme .
D-1 - Common topologies .
................................................... 76
0.2 - Acwmodating star cabling topology in a bus pathway topology
0.3 - Star cabling topology .
......................................................... 76
0.4 - Ring system topology realised from a star cabling topology
D.5 - Bus system topology realised from a star cabling topology .
...........................................................................
D-6 - Example of voice services over generic cabling
D.7 - Inter-relationship of functional elements in an installation with diversity for protection
against failure .
E-1 - Cable types .
............................................................................................ 87
H.1 - Duplex SC connectivity configuration
...............................................................................
H.2 - Simplex BFOC/2,5 connectivity configuration
........................................... 88
H.3 - Simplex BFOC/2,5-to-Duplex SC (hybrid) connectivity configuration
vi
Tables
...............................................................................................
1 - Recommended media for pre-cabling
...................................... 25
2 - Channel lengths achievable with different categories and types of cabling
.................................................................................
3 - Minimum return loss at each cabling interface
............................................................................................................
4 - Maximum attenuation values
......................................................................................................................... 27
5 - Minimum NEXT loss
6 - Minimum ACR values .
7 - Maximum d.c. loop resistance .
8 - Maximum propagation delay .
9 - Longitudinal to differential conversion loss .
subsystems .
10 - Attenuation of fibre optic cabling
..................................................................
11 - Wavelength windows for multimode fibre optic cabling
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12 - Wavelenth windows for singlemode fibre optic cabling
.................................................................................................. 31
13 - Minimum optical modal bandwidth
14 - Minimum optical return loss .
.................................................. 33
15 - Mechanical characteristics of 100 Sz and 120 Sz balanced cables
16 - Electrical characteristics of 100 SL and 120 Sz balanced cables .
....................................................... 35
17 - Additional electrical characteristics of 100 Sz balanced cables
18 - Alternative limits for attenuation and NEXT loss .
19 - Additional electrical characteristics of 120 f2 balanced cables .
20 - Mechanical characteristics of 150 a balanced cables .
....................................................................... 38
21 - Electrical characteristics of 150 f2 balanced cables
22 - Cable transmission performance parameters .
23 - Mechanical characteristics of connecting hardware intended for use with 100 a or 120
a cabling .
24 - Electrical characteristics of connecting hardware intended for use with 100 a or
120 n cabling 45
........................................................................................................................................
25 - Mechanical characteristics of connecting hardware intended for use with 150 Ln cabling . . . . . . . . . . . . . 47
26 - Electrical characteristics of connecting hardware intended for use with 150 n cabling . . . . . . . . . . . . . . . . . 48
27 - Mechanical and optical characteristics of optical fibre connecting hardware .
A. 1 - Parameters for testing cabling links .
A.2 - Test balun performance characteristics (1 - 100 MHz) .
A.3 - Test plug NEXT loss requirements . 66
...................................................... 73
C.l - Different mechanical characteristics for 150 Q flexible cables
C.2 - Different electrical characteristics for 150 Q flexible cables .
E.l - Naming of balanced cables .
G.1 - Supported applications .
G.4 - Application standards and balanced cabling .
G.5 - Application standards and optical fibre cabling .
vii
lSO/IEC 11801:1995(E)
Foreword
IS0 (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialised system for worldwide standardization. National bodies that are
members of IS0 or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical activity.
IS0 and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and nongovernmental, in liaison with IS0 and IEC, also take part in the
work.
In the field of information technology, IS0 and IEC have established a joint technical committee,
ISOAEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to
national bodies for voting. Publication as an International Standard requires approval by at least 75% of
the national bodies casting a vote.
International Standard lSO/IEC 11801 was prepared by the Joint Technical Committee
ISOIIEC JTC l/SC 25, Interconnection of Information Technology Equipment.
This International Standard has taken into account requirements specified in application standards
listed in annex G. It refers to International Standards.for components and test methods whenever an
appropriate International Standard was available.
Annexes A, B and C form an integral part of this International Standard.
Annexes D, E, F, G, H and J are for information only.
. . .
VIII
Introduction
Wrthin customer premises, the importance of the cabling infrastructure is similar to that of other
.
fundamental building utilities such- as heating, lighting and mains power. As with other utilities,
interruptions to service can have serious impact. Poor quality of service due to lack of design foresight,
use of inappropriate components, incorrect installation, poor administration or inadequate support can
threaten an organisation’s effectiveness.
Historically, the cabling within a premises comprised both application specific and multipurpose
networks. Appropriate use of this International Standard will enable a controlled migration to generic
cabling. Certain circumstances may warrant the introduction of application specific cabling; these
instances should be minimised.
This International Standard provides:
a) users with an application independent generic cabling system and an open market for cabling
components;
b) users with a flexible cabling scheme such that modifications are both easy and economical;
c) building professionals (for example, architects) with guidance allowing the accommodation of
cabling before specific requirements are known; that is, in the initial planning either for
construction or refurbishment;
d) industry and applications standardisation bodies with a cabling system which supports current
products and provides a basis for future product development.
This International Standard specifies a multi-vendor cabling, and is related to:
a) International Standards for cabling components developed by committees of the IEC; for
example, copper cables IECITC 46’) , copper connectors lEC/TC 48, optical fibre cables and
connectors lEC/TC 86;
b) applications developed by the sub-committees of ISOAEC JTC l*) and study groups of ITU-T?
for example, IANs: ISOAEC JTC l/SC 6 and SC 25/M/G 44); ISDN: ITU-T SG 135);
C) planning and installation guides for the implementation and use of generic cabling systems;
The applications listed in annex G have been analysed to determine the requirements for a generic
cabling system. These requirements, together with statistics concerning premises geography from
different countries and the model described in 6.1.1, have been used to develop the requirements for
cabling components and to stipulate their arrangement into cabling systems. As a result, generic
cabling defined within this International Standard is targeted at, but not limited to, the general office
environment.
It is anticipated that the generic cabling system defined by this International Standard will have a life
expectancy in excess of 10 years.
1) International Electrotechnical Commission - Technical Committee 46
2) International Organization for Standardization/International Electrotechnical Commission - Joint Technical Committee 1
3) International Telecommunication Union - Telecommunications
Group 4
4) SubcoMmittee 25 -Working
6) Study Group 13
ix
ISO/IEC 14 801 :I 995(E)
lSO/IEC 11801:1995(E)
INTERNATIONAL STANDARD
Information technology -
.
Generic cabling for customer premises
I
Scope
International Standard lSO/IEC 11801 specifies generic cabling for use within commercial premises,
which may comprise single or multiple buildings on a campus.
The International Standard is optimised for premises having a geographical span of up to 3 000 m, with
up to 1 000 000 ti of office space, and a population between 50 and 50 000 persons. It is
recommended that the principles of this International Standard be applied to installations that do not fall
within this range.
Cabling defined by this International Standard supports a wide range of services including voice, data,
text, image and video.
This International Standard specifies:
a) the structure and minimum configuration for generic cabling’) ,
b) implementation requirements,
c) performance requirements for individual cabling links and
d) conformance requirements and verification procedures.
Although safety (electrical, fire, etc.) and Electromagnetic Compatibility (EMC) requirements are
outside the scope of this International Standard, and may be covered by other standards and
regulations, information given in this International Standard may be of assistance in meeting these
requirements.
1) Cables and cords used to connect application specific equipment to the generic cabling system are outside of the scope of
this International Standard. Since they have significant effect on the transmksion characteristics of the channel,
assumptions and guidance are provided on their performance and length.
l lSO/IEC 11801:1995(E)
2 Normative references
The following normative documents contain provisions that, through reference in this text, constitute .
provisions of lSO/IEC 11801. At the time of publication, the editions indicated were valid. All normative
documents are subject to revision, and parties to agreements based on this International Standard are
encouraged to investigate the possibility of applying the most recent editions of the normative
documents indicated below. Members of IEC and IS0 maintain registers of currently valid International
Standards.
IEC 68-1:1988, Basic environmental testing procedures - Environmental testing - Part 1:
General and guidance
IEC 68-2-2: 1974, Basic environmental testing procedures - Part 2: Tests - Tests B: Dry heat
IEC 68-26: 1982, Basic environmental testing procedures - Part 2: Tests - Tests Fc and
guidance: Vibration (sinusoidal)
IEC 6802-14:1984, Basic environmental testing procedures - Part 2: Tests - Test N: Change of
temperature
I EC 68-2-38: 1974, Basic environmental testing procedures - Part 2: Tests - Test Z/AD:
Composite temperature/humidity cyclic test
IEC 68-2-60 l-i-D: 1990, Basic environmental testing procedures - Part 2: Tests - Test Ke: Corrosion
tests in artificial atmosphere at very low concentration of polluting gas(es)
[Technical Trend Document]
IEC 96-1:1986, Radio-frequency cables - Part 1: General requirements and measuring
methods
IEC 1890l:l986, Low-frequency cables and wires with p.v.c. insulation and p.v.c. sheath -
Part 1: General test and measuring methods
I EC 227-2: 1979,
Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V - Part 2: Test methods
IEC 51201:1994, Electromechanical components for electronic equipment; basic testing
procedures and measuring methods - Part 1: General
IEC 51202:1985, Electromechanical components for electronic equipment; basic testing
procedures and measuring methods - Part 2: General examination, electrical
continuity and contact resistance tests, insulation tests and voltage stress
tests
Amendment 1 (1988)
IEC 60307:1990, Connectors for frequencies below 3 MHz for use with printed boards - Part 7:
Detail specification for connectors, 8 way, including fixed and free connectors
with wmmon mating features
IEC 70801:1981, Low-frequency cables with polyolefin insulation and moisture barrier .
polyolefin sheath - Part 1: General design details and requirements
Optical fibres - Part 1: Generic specification
IEC 79301:1992,
Part 2: Product specifications
IEC 79302:1992, Optical fibres -
IEC 79401:1993, Optical fibre cables - Part 1: Generic specification
IEC 79402:1989, Optical fibre cables - Part 2: Product specifications
IEC 80708:1992,
Rectangular connectors for frequencies below 3 MHz - Part 8: Detailed
specification for connectors, four signal contacts and earthing contacts for
cable screen
IEC 81 l-1-1:1993, Common test methods for insulating and sheathing materials of electric
cables - Part 1: Methods for general application - Section 1: Measurement
of thickness and overall dimensions - Tests for determining the mechanical
properties
IEC 87401:1993,
Connectors for optical fibres and cables - Part I: Generic specification
IEC 874-10: 1992, Connectors for optical fibres and cables - Part IO: Sectional specification for
fibre optic connector - Type BFOC/2,5
IEC 874014:1993, Connectors for optical fibres and cables - Part 14: Sectional specification for
fibre optic connector - Type SC
IEC 10730tl994,
Splices for optical fibres and cables - Part 1: Generic specification -
Hardware and accessories
IEC 11560t1994,
Multiwre and symmetrical pair/quad cables for digital communications - Part
1: Generic specification
ISOA EC 8802-5: 1992, Information technology - Local and metropolitan area networks - Part 5:
Token ring access method and physical layer specifications
CISPR 22: 1993, Limits and methods of measurement of radio disturbance characteristics of
information technology equipment.
IT&T Rec. G. 117: 1988,
Transmission aspects of unbalance about earth (definitions and methods)
ITU-T Rec. G.650: 1993, Transmission media characteristics. Definition and test methods for the
relevant parameters of single-mode fibres
ITU-T Rec. G.651: 1993, Characteristics of a 50/125 pm multimode graded index optical fibre cable
ITU-T Rec. G.652: 1993,
Characteristics of a single-mode optical fibre cable
ITU-T Rec. 0.9: 1988,
Measuring arrangements to assess the degree of unba
...