SIST EN 50173-2:2008
Information technology - Generic cabling systems -- Part 2: Office premises
Information technology - Generic cabling systems -- Part 2: Office premises
This European Standard specifies generic cabling that supports a wide range of communications services for use within office premises, or office areas within other types of premises, that comprise single or multiple buildings on a campus. The requirements of this standard may be applied to other premises that are not explicitly specified within other parts of the EN 50173 series of standards. It covers balanced cabling and optical fibre cabling. This European Standard is based upon and references the requirements of EN 50173-1. This European Standard contains additional requirements that are appropriate to office premises in which the maximum distance over which communications services have to be distributed is 2 000 m. The principles of this European Standard may also be applied to installations that do not fall within this range.
Informationstechnik - Anwendungsneutrale Kommunikationskabelanlagen -- Teil 2: Bürogebäude
Diese Europäische Norm legt eine anwendungsneutrale Kommunikationsverkabelung fest, die eine Fülle von Kommunikationsdiensten innerhalb von Bürostandorten oder von Bürobereichen innerhalb anderer Standorte mit einem oder mehreren Gebäuden unterstützt. Die Anforderungen dieser Norm dürfen auch auf Standorte angewandt werden, für die es in den anderen Normen der Reihe EN 50173 keine ausdrücklichen Festlegungen gibt. Sie behandelt Verkabelungen mit symmetrischen Kupferkabeln und Lichtwellenleiter-kabeln.
Diese Europäische Norm beruht auf den Anforderungen von EN 50173-1 und nimmt auf diese Bezug. Diese Europäische Norm enthält zusätzliche Anforderungen für Bürostandorte, bei denen die größte Entfernung, über die informationstechnische Dienste verteilt werden sollen, 2 000 m beträgt. Die Verfahren dieser Euro-päischen Norm dürfen auch auf Installationen angewandt werden, die nicht in diese Größenordnung fallen.
Ergänzend zu den Anforderungen von EN 50173-1 legt diese Europäische Norm fest:
a) eine erweiterte Struktur und die Konfiguration einer anwendungsneutralen Kommunikationskabelanlage für Bürostandorte, die eine breite Palette von Diensten einschließlich Sprache, Daten, Text, Stand- und Bewegtbild unterstützt;
b) Wahlmöglichkeiten für die Ausführung.
Anforderungen an Sicherheit (elektrische Sicherheit und Schutz vor Zerstörung, optische Leistung, Feuer usw.) und elektromagnetische Verträglichkeit (EMV) gehören nicht zum Anwendungsbereich dieser Europä-ischen Norm und werden von anderen Normen und Vorschriften behandelt. Jedoch kann die in dieser Euro-päischen Norm gegebene Information bei der Einhaltung dieser Normen und Vorschriften hilfreich sein
Technologies de l'information - Systèmes de câblage générique -- Partie 2: Locaux du secteur tertiaire
La présente norme européenne spécifie le câblage générique qui prend en charge une large palette de services de communications à utiliser pour des locaux du secteur tertiaire, ou des zones tertiaires à l’intérieur d’autres types de bâtiments, qui comprennent un seul ou plusieurs bâtiments sur un campus. Les exigences indiquées dans la présente norme peuvent s’appliquer aussi à d’autres locaux qui ne sont pas explicitement mentionnés dans les autres parties de série de normes EN 50173. Elle couvre les câblages en cuivre à paires symétriques et les câblages en fibres optiques.
La présente norme européenne est fondée sur les exigences de la EN 50173-1 et cite ces dernières en référence. La présente norme européenne contient les exigences additionnelles qui sont appropriées aux locaux du secteur tertiaire dans lesquels la distance maximale sur laquelle les services de communications doivent être distribués est de 2 000 m. Les principes de la présente norme européenne peuvent également être appliqués aux installations qui n’entrent pas dans cette catégorie.
Outre les exigences de la EN 50173-1, la présente norme européenne spécifie:
a) une structure et une configuration de câblage générique dans les locaux du secteur tertiaire étendues pour prendre en charge une large gamme de services vocaux, de données, de texte, d’image et vidéo;
b) les options de mise en œuvre;
Les exigences de sécurité (sécurité électrique et protection, puissance optique, feu etc.) et de compatibilité électromagnétique (CEM) ne font pas partie du domaine d'application de la présente norme européenne et sont couvertes par d'autres normes et réglementations. Cependant, les informations données dans la présente norme européenne peuvent aider à satisfaire à ces normes et réglementations.
Informacijska tehnologija - Univerzalni sistemi pokabljenja - 2. del: Pisarne
Ta evropski standard določa univerzalno polaganje kablov, ki podpira širok razpon komunikacijskih storitev za uporabo v pisarnah ali pisarniških prostorih v drugih vrstah prostorov, ki so sestavljeni iz ene ali več stavb na kampusu. Zahteve tega standarda lahko veljajo za druge prostore, ki niso izrecno določeni v drugih delih serije standardov EN 50173. Zajema uravnoteženo polaganje kablov in polaganje optičnih kablov. Ta evropski standard temelji na sklicih in zahtevah EN 50173-1. Ta evropski standard vsebuje dodatne zahteve, ki so primerne za pisarne, v katerih je največja razdalja, na kateri je treba distribuirati komunikacijske storitve, 2000 m. Načela tega mednarodnega standarda prav tako lahko veljajo za postavitve, ki niso v tem razponu.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50173-2:2008
01-januar-2008
1DGRPHãþD
SIST EN 50173-1:2003
Informacijska tehnologija - Univerzalni sistemi pokabljenja - 2. del: Pisarne
Information technology - Generic cabling systems - Part 2: Office premises
Informationstechnik - Anwendungsneutrale Kommunikationskabelanlagen - Teil 2:
Bürogebäude
Technologies de l'information - Systemes de câblage générique - Partie 2: Locaux du
secteur tertiaire
Ta slovenski standard je istoveten z: EN 50173-2:2007
ICS:
33.040.50 Vodi, zveze in tokokrogi Lines, connections and
circuits
35.110 Omreževanje Networking
SIST EN 50173-2:2008 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN 50173-2
NORME EUROPÉENNE
May 2007
EUROPÄISCHE NORM
ICS 33.040.50 Partially supersedes EN 50173-1:2002
English version
Information technology -
Generic cabling systems -
Part 2: Office premises
Technologies de l'information - Informationstechnik -
Systèmes de câblage générique - Anwendungsneutrale
Partie 2: Locaux du secteur tertiaire Kommunikationskabelanlagen -
Teil 2: Bürogebäude
This European Standard was approved by CENELEC on 2007-04-11. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50173-2:2007 E
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EN 50173-2:2007 – 2 –
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 215, Electrotechnical
aspects of telecommunication equipment.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50173-2 on
2007-04-11.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-05-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-05-01
The previous editions of European Standards EN 50173:1995 and EN 50173-1:2002 have been developed to
enable the application-independent cabling to support ICT applications in office premises. Their basic
principles, however, are applicable to other types of applications and in other types of premises.
TC 215 has decided to establish relevant European Standards which address the specific requirements of
these premises. In order to point out the commonalities of these cabling design standards, these EN are
published as individual parts of the series EN 50173, thus also acknowledging that standards users recognize
the designation “EN 50173” as a synonym for generic cabling design.
At the time of publication of this European Standard, series EN 50173 comprises the following standards:
EN 50173-1 Information technology – Generic cabling systems – Part 1: General requirements
EN 50173-2 Information technology – Generic cabling systems – Part 2: Office premises
EN 50173-3 Information technology – Generic cabling systems – Part 3: Industrial premises
EN 50173-4 Information technology – Generic cabling systems – Part 4: Homes
EN 50173-5 Information technology – Generic cabling systems – Part 5: Data centres
This European Standard, EN 50173-2, together with EN 50173-1:2007 supersedes, EN 50173-1:2002. It is
an editorial revision of EN 50173-1:2002 and contains those specifications of EN 50173-1:2002, which are
relevant to generic cabling systems to be operated in office premises, referencing the general requirements of
EN 50173-1:2007.
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- 3 - EN 50173-2:2007
Contents
Introduction . 5
1 Scope and conformance . 8
1.1 Scope .8
1.2 Conformance .8
2 Normative references . 9
3 Definitions and abbreviations . 9
3.1 Definitions.9
3.2 Abbreviations .10
4 Structure of the generic cabling system in office premises . 10
4.1 General.10
4.2 Functional elements.11
4.3 General structure and hierarchy.11
4.4 Cabling subsystems.12
4.5 Accommodation of functional elements.13
4.6 Interfaces.14
4.7 Dimensioning and configuring.14
5 Channel performance in office premises . 18
5.1 General.18
5.2 Environmental performance .19
5.3 Transmission performance.19
6 Reference implementations in office premises . 21
6.1 General.21
6.2 Balanced cabling.21
6.3 Optical fibre cabling .24
7 Cable requirements in office premises. 26
7.1 General.26
7.2 Balanced cables .26
7.3 Optical fibre cables .26
8 Connecting hardware requirements in office premises . 27
8.1 General requirements .27
8.2 Connecting hardware for balanced cabling .27
8.3 Connecting hardware for optical fibre cabling.27
---------------------- Page: 4 ----------------------
EN 50173-2:2007 – 4 –
9 Requirements for cords and jumpers in office premises. 27
9.1 Jumpers.27
9.2 Balanced cords .28
9.3 Optical fibre cords.28
Annex A (normative) Link performance limits . 29
Bibliography . 30
Figures
Figure 1 - Schematic relationship between the EN 50173 series and other relevant standards .6
Figure 2 - Structure of generic cabling.11
Figure 3 - Hierarchical structure of generic cabling.12
Figure 4 - Structures for centralised generic cabling.12
Figure 5 - Accommodation of functional elements .13
Figure 6 - Test and equipment interfaces .14
Figure 7 - Example of a generic cabling system with combined BD and FD.15
Figure 8 - Connection of functional elements providing redundancy .16
Figure 9 - Example of a horizontal channel.18
Figure 10 - Example of a system showing the location of cabling interfaces .19
Figure 11 - Horizontal cabling models .23
Figure 12 - Combined optical fibre backbone/horizontal channels .25
Figure A.1 - Link options.29
Tables
Table 1 - Contextual relationship between EN 50173 series and other standards relevant for information
technology cabling systems.7
Table 2 - Maximum channel lengths for reference implementations .15
Table 3 - Horizontal channel equations.24
Table 4 - Optical fibre channel equations.26
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- 5 - EN 50173-2:2007
Introduction
The importance of the information technology cabling infrastructure is similar to that of other utilities such as
heating, lighting and electricity supplies. As with other utilities, interruptions to service can have serious
impact. Poor quality of service due to lack of planning, use of inappropriate components, incorrect installation,
poor administration or inadequate support can threaten an organisation's effectiveness.
Historically, the cabling within premises comprised both application-specific and multipurpose networks.
Standards within the EN 50173 series have enabled a controlled migration to generic cabling (with an
associated reduction in the use of application-specific cabling) and supported the development of high data
rate applications based upon defined cabling models.
This European Standard, EN 50173-2, has been prepared to reflect the demands of generic cabling within
office premises and 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; i.e., in the initial planning either for construction or refurbishment;
d) industry and standardisation bodies with a cabling system which supports current products and provides a
basis for future product development and applications standardisation.
This European Standard specifies multi-vendor cabling, and is related to:
- the associated standard covering general requirements for generic cabling within premises (EN 50173-1);
- standards for cabling components developed by Technical Committees of CENELEC and/or IEC;
- standards for the quality assurance and installation of information technology cabling (series EN 50174)
and testing of installed cabling (EN 50346);
- applications developed by the technical bodies of IEC (including the subcommittees of ISO/IEC JTC 1)
and study groups of ITU-T.
The applications listed in EN 50173-1:2007, Annex F, 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 models described in Clause 6, 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 European Standard is targeted at, but not limited to, office premises.
It is anticipated that the generic cabling system meeting the minimum requirements of this European
Standard will have a life expectancy in excess of ten years.
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EN 50173-2:2007 – 6 –
Figure 1 and Table 1 show the schematic and contextual relationships between the standards produced by
TC 215 for information technology cabling, namely:
1) this and other parts of the EN 50173 series;
2) application dependent cabling design (e.g. EN 50098 series);
3) installation (EN 50174 series);
4) testing of installed cabling (EN 50346);
5) equipotential bonding requirements (EN 50310).
ENEN 500 50098-98-1:1: CCuuststomomerer pr prememiisseses EENN 50173-50173-2:2: I Innffoorrmmatatiion ton teecchnolhnology -ogy -
cablcabliing fng foorr i innffoorrmmatatiion on tteecchhnnoollogy -ogy - GGenereneriicc c cablabliing ng -- OOffffiicce pre prememiisseses
IISSDDNN basi basicc accesaccesss
ENEN 50173-50173-3:3: I Innffoorrmmatatiion ton teechnolchnologyogy - -
EENN 50098-50098-2:2: C Cuuststomomerer pr prememiisses es GGenereneriicc cabl cabliing ng -- IIndustndustrriiaall prprememiisseses
ENEN 50173- 50173-1:1: I Innffoorrmmatatiion on tteechnolchnologyogy --
cablcabliing fng foorr i innffoorrmmatatiion on tteechnolchnology -ogy -
ENEN 50173- 50173-4:4: IInnffoorrmmatatiion ton teechnolchnology ogy -- GGenereneriicc cabl cabliing ng -- GGenereneralal r requiequirreemmententss
2048 2048 kbikbitt//ss I ISSDDNN pr priimmararyy ac access and cess and
GGenereneriicc c cablabliing -ng - HHomomeses
lleaseased led liine netne netwwoorrkk i inntteerrffacacee
ENEN 50173- 50173-5:5: IInnffoorrmmatatiion ton teechnolchnology ogy --
GGenereneriicc cabl cabliing -ng - DDatata a centcentrreess
ENEN 50174- 50174-1:1: IInnffoorrmmaattiion ton teechchnolnology ogy --
CCablabliing ing innssttalalllaattiion on -- SSpecpeciiffiiccatatiion and on and
qualqualiittyy assur assuranceance
EENN 50174-50174-2:2: I Innffoorrmmatatiion ton teecchnolhnology -ogy - ENEN 50310: 50310: Appl Appliiccatatiion ofon of eqequiuipotpotententiiaall
CCablabliing ing innssttalalllaattiion on -- IInstnstaallllatatiion on bondibonding and ng and eareartthhiinngg iin buin buillddiings wngs wiitthh
plplannianning anng and prd practactiicesces iinnsiside de buibuillddiingsngs iinnffoorrmmatatiion ton teechnolchnology ogy equiequipmpmentent
EENN 50174-50174-3:3: I Innffoorrmmatatiion ton teecchnolhnology -ogy -
CCablabliing ing innssttalalllaattiion on -- IInstnstaallllatatiion on
plplannianning anng and prd practactiicesces outoutsiside de buibuillddiingsngs
ENEN 50346:50346: I Innffoorrmmatatiion ton teechnolchnologyogy - -
CCablabliing ing innssttalalllaattiion on --
TestTestiing ofng of i innststalallled ed cablcabliinngg
NOTE For the purposes of the standards in the EN 50173 and EN 50174 series the term “information technology” includes ICT, BCT
and CCCB applications.
Figure 1 - Schematic relationship between the EN 50173 series and other relevant standards
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- 7 - EN 50173-2:2007
Table 1 - Contextual relationship between EN 50173 series and other standards relevant for information
technology cabling systems
Building design Generic cabling Specification phase Installation phase Operation phase
phase design phase
EN 50310 EN 50173 series EN 50174-1 EN 50174-1
except
EN 50173-4
4: Structure
5.2: Common bonding 4 Requirements for 5: Requirements for
network (CBN) within installers premises owners
5: Channel
a building
performance 5: Requirements for
6.3: AC distribution premises owners
7: Cable requirements
system and bonding
of the protective
8: Connecting
conductor (TN-S)
hardware
requirements
9: Requirements for
cords and jumpers
A: Link performance
limits
Planning phase
and
EN 50173-4 EN 50174-2 EN 50174-2
4 and 5: Structure
5: Requirements for 4: Requirements for
planning installations installers of
6: Channel
of information information
performance
technology cabling technology cabling
8: Cable requirements
6: Segregation of 6: Segregation of
metallic information metallic information
9: Connecting
technology and mains technology and mains
hardware
power cabling power cabling
requirements
7: Additional
10: Requirements for
considerations
cords and jumpers
A: Link performance
limits
and and
EN 50174-3 EN 50174-3
and and
(for equipotential (for equipotential
bonding) bonding)
EN 50310 EN 50310
5.2: Common bonding 5.2: Common bonding
network (CBN) within network (CBN) within
a building a building
6.3: AC distribution 6.3: AC distribution
system and bonding system and bonding
of the protective of the protective
conductor (TN-S) conductor (TN-S)
and
EN 50346
4: General
requirements
5: Test parameters for
balanced cabling
6: Test parameters for
optical fibre cabling
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EN 50173-2:2007 – 8 –
1 Scope and conformance
1.1 Scope
This European Standard specifies generic cabling that supports a wide range of communications services for
use within office premises, or office areas within other types of premises, that comprise single or multiple
buildings on a campus. The requirements of this standard may be applied to other premises that are not
explicitly specified within other parts of the EN 50173 series of standards. It covers balanced cabling and
optical fibre cabling.
This European Standard is based upon and references the requirements of EN 50173-1. This European
Standard contains additional requirements that are appropriate to office premises in which the maximum
distance over which communications services have to be distributed is 2 000 m. The principles of this
European Standard may also be applied to installations that do not fall within this range.
In addition to the requirements of EN 50173-1, this European Standard specifies:
a) an extended structure and configuration for generic cabling within office premises in support of a wide
range of services including voice, data, text, image and video;
b) implementation options;
Safety (electrical safety and protection, optical power, fire, etc.) and electromagnetic compatibility (EMC)
requirements are outside the scope of this European Standard and are covered by other standards and
regulations. However, information given in this international Standard may be of assistance in meeting these
standards and regulations.
1.2 Conformance
For a cabling system to conform to this European Standard:
a) the structure and configuration shall conform to the requirements of Clause 4;
b) the interfaces to the cabling at the telecommunications outlet shall conform to the requirements of
Clause 8 with respect to mating interfaces and performance;
c) connecting hardware at other places in the cabling structure shall meet the performance requirements
specified in Clause 8;
d) the performance of channels shall conform to the requirements of Clause 5. This shall be achieved by
one of the following:
- a channel design and implementation ensuring that the prescribed channel performance Class of
Clause 5 is met;
- attachment of appropriate components to a link design meeting the prescribed performance Class of
Annex A. Channel performance shall be assured where a channel is created by adding more than
one cord to either end of a link meeting the requirements of Annex A;
- using the reference implementations of Clause 6 and compatible cabling components conforming to
the requirements of Clauses 7, 8 and 9, based upon a statistical approach of performance modelling.
e) local regulations concerning safety shall be met.
In addition the following requirements of the EN 50174 series of standards shall be met:
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- 9 - EN 50173-2:2007
f) installation specification and quality planning to address:
- the test parameters to be measured;
- the sampling levels to be applied;
- the treatment of channels or links which fail to meet requirements or for which test results lie within
the relevant measurement accuracy;
g) administration;
h) installation.
Test methods to verify conformance with the channel and link requirements of Clause 5 and Annex A
respectively are specified in EN 50346. Neither this standard nor EN 50174-1 specify the test and sampling
levels to be adopted.
Specifications marked "ffs" (for further study) in EN 50173-1:2007 are preliminary and are not required for
conformance to this European Standard.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 50173-1:2007, Information technology – Generic cabling systems – Part 1: General requirements
EN 50174-1, Information technology – Cabling installation – Part 1: Specification and quality assurance
EN 50174-2, Information technology – Cabling installation – Part 2: Installation planning and practices inside
buildings
EN 50174-3, Information technology – Cabling installation – Part 3: Installation planning and practices outside
buildings
EN 61076-3-106:2006, Connectors for electronic equipment - Product requirements - Part 3-106: Rectangular
connectors - Detail specification for protective housings for use with 8-way shielded and unshielded con-
nectors for industrial environments incorporating the IEC 60603-7 series interface (IEC 61076-3-106:2006)
IEC 60874-19-1, Connectors for optical fibres and cables – Part 19-1: Fibre optic patch cord connector type
SC-PC (floating duplex) standard terminated on multimode fibre type A1a, A1b – Detail specification
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this European Standard the following definitions apply in addition to those of EN 50173-1.
3.1.1
consolidation point
connection point in the horizontal cabling subsystem between a floor distributor and a telecommunications
outlet
3.1.2
consolidation point cable
CP cable
cable connecting a consolidation point to a telecommunications outlet
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EN 50173-2:2007 – 10 –
3.1.3
consolidation point link
CP link
transmission path between a consolidation point and the interface at the other end of the horizontal cable
including the connecting hardware at each end
3.1.4
horizontal cable
cable connecting the floor distributor to the telecommunications outlet(s) or consolidation point(s)
3.1.5
individual work area
minimum building space which would be reserved for an occupant
3.1.6
telecommunications outlet
fixed connecting device where the horizontal cabling terminates
NOTE The telecommunications outlet provides the interface to the work area cabling
3.1.7
terminal equipment
equipment (e.g. telephone handset) that provides user access to an application at a telecommunications
outlet
3.1.8
work area
building space where the occupants interact with terminal equipment
3.1.9
work area cord
cord connecting the telecommunications outlet to the terminal equipment
3.2 Abbreviations
For the purposes of this European Standard the following abbreviations apply in addition to those of
EN 50173-1.
BEF Building Entrance Facility
CP Consolidation Point
MUTO Multi User Telecommunications Outlet
OE EQP Opto-electronic equipment
S
Splice
TE Terminal Equipment
TO Telecommunications Outlet
4 Structure of the generic cabling system in office premises
4.1 General
This clause identifies the functional elements of generic cabling, describes how they are connected together
to form subsystems and identifies the interfaces at which application-specific components are connected.
Channels, created by connecting application-specific cabling components to the generic cabling, are used to
support applications (see EN 50173-1:2007, Annex F).
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- 11 - EN 50173-2:2007
In general, all functional elements, subsystems and interfaces from the campus distributor to the floor
distributor as described in EN 50173-1 are applicable.
4.2 Functional elements
In addition to the distributors specified in EN 50173-1 this standard specifies the following functional elements
and interfaces of generic cabling:
a) horizontal cable;
b) consolidation point (CP);
c) consolidation point cable (CP cable);
d) multi-user TO assembly (MUTO assembly);
e) telecommunications outlet (TO).
Groups of these functional elements are connected together to form cabling subsystems (see 4.3).
4.3 General structure and hierarchy
Generic cabling systems contain up to three types of cabling subsystems: campus backbone, building
backbone and horizontal cabling. The cabling subsystems are connected together to create a generic cabling
system with a structure as shown in Figure 2. The composition of the cabling subsystems is described in
4.4.1, 4.4.2 and 4.4.3. The functional elements of the cabling subsystems are interconnected to form a basic
hierarchical topology as shown in Figure 3.
Where the functions of distributors are combined (see 4.7.1) the cabling subsystem(s) linking them are not
required.
Connections between cabling subsystems are either active, requiring application-specific equipment, or
passive. Connection to application-specific equipment adopts either an interconnect or a cross-connect
approach (see EN 50173-1). Passive connections between cabling subsystems adopt either a cross-connect
approach, by way of either patch cords or jumpers, or an interconnect approach.
CD BD FD CP TO TE
Campus Horizontal cabling subsystem
Building Work
backbone
backbone area cabling
cabling
cabling
subsystem
subsystem
Generic cabling system
Figure 2 - Structure of generic cabling
Centralised cabling structures as shown in Figure 4 combine backbone
...
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