ISO/IEC 11801-6:2017

ISO/IEC 11801-6
Edition 1.0 2017-11
INTERNATIONAL
STANDARD
Information technology – Generic cabling for customer premises –
Part 6: Distributed building services

ISO/IEC 11801-6 :2017-11(en)
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ISO/IEC 11801-6
Edition 1.0 2017-11
INTERNATIONAL
STANDARD
Information technology – Generic cabling for customer premises –

Part 6: Distributed building services

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.200 ISBN 978-2-8322-5036-5

– 2 – ISO/IEC 11801-6:2017 © ISO/IEC 2017
CONTENTS
FOREWORD . 5
INTRODUCTION . 6
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and abbreviated terms . 10
3.1 Terms and definitions . 10
3.2 Abbreviated terms . 11
4 Conformance . 11
5 Structure of the generic cabling system . 12
5.1 General . 12
5.2 Functional elements . 12
5.2.1 Stand-alone structure . 12
5.2.2 Overlay structure . 13
5.3 General structure and hierarchy . 13
5.3.1 Type A generic cabling . 13
5.3.2 Type B generic cabling . 14
5.4 Cabling subsystems . 15
5.4.1 Campus and building backbone cabling subsystem . 15
5.4.2 Service distribution cabling subsystem (Type A generic cabling) . 15
5.4.3 Service distribution cabling subsystem (Type B generic cabling) . 15
5.4.4 Design objectives . 16
5.5 Accommodation of functional elements . 16
5.5.1 General . 16
5.5.2 Accommodation of service outlets . 16
5.5.3 Accommodation of service concentration points . 17
5.6 Interfaces . 17
5.6.1 Equipment interfaces and test interfaces . 17
5.6.2 Channels and links . 18
5.7 Dimensioning and configuring . 19
5.7.1 General . 19
5.7.2 Type A generic cabling . 21
5.7.3 Type B generic cabling . 22
5.7.4 Service concentration point. 23
5.7.5 Connecting hardware . 23
5.7.6 Telecommunications rooms and equipment rooms . 23
5.8 Relevant building services . 23
6 Channel performance requirements . 23
6.1 General . 23
6.2 Environmental performance . 25
6.3 Transmission performance . 25
6.3.1 General . 25
6.3.2 Balanced cabling . 25
6.3.3 Optical fibre cabling . 26
7 Link performance requirements . 26
7.1 General . 26

7.2 Balanced cabling . 27
7.3 Optical fibre cabling . 27
8 Reference implementations . 27
8.1 General . 27
8.2 Balanced cabling . 27
8.2.1 General . 27
8.2.2 Service distribution cabling (Type A generic cabling) . 28
8.2.3 Service distribution cabling (Type B generic cabling) . 31
8.2.4 Campus and building backbone cabling . 31
8.3 Optical fibre cabling . 31
8.3.1 Service distribution cabling (Type A generic cabling) . 31
8.3.2 Service distribution cabling (Type B generic cabling) . 32
8.3.3 Campus and building backbone cabling . 32
9 Cable requirements . 32
9.1 General . 32
9.2 Balanced cables . 32
9.3 Optical fibre cables . 32
10 Connecting hardware requirements . 32
10.1 General requirements . 32
10.2 Connecting hardware for balanced cabling . 32
10.2.1 General requirements . 32
10.2.2 Electrical, mechanical and environmental performance . 32
10.3 Connecting hardware for optical fibre cabling . 33
11 Cords . 33
11.1 Jumpers . 33
11.2 Balanced cords . 33
11.3 Optical fibre cords . 33
Annex A (informative) Services and applications . 34
A.1 Overview. 34
A.2 Service sectors and services. 34
A.2.1 Access control . 34
A.2.2 Burglar alarms . 35
A.2.3 Asset management . 35
A.2.4 Audio-visual . 35
A.2.5 Building information systems . 35
A.2.6 Building well-being and structural sensor systems . 35
A.2.7 Energy management . 35
A.2.8 Environmental control . 36
A.2.9 Fixed information technology services . 36
A.2.10 Personal well-being . 36
A.2.11 Shared information technology services . 36
A.3 Service concentration point grid density . 38
A.4 Cabling provision to service concentration points . 39
Annex B (informative) Overlay . 40
B.1 General . 40
B.2 Functional elements . 40
B.2.1 Type A generic cabling . 40
B.2.2 Type B generic cabling . 40

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B.3 General structure and hierarchy . 40
B.3.1 Type A generic cabling . 40
B.3.2 Type B generic cabling . 40
Annex C (informative) Optical fibre within the Type B service distribution cabling
subsystem . 41
C.1 Overview. 41
C.2 Implementation recommendations . 41
C.2.1 Channel performance . 41
C.2.2 Reference implementation . 41
C.2.3 Cables . 42
C.2.4 Connecting hardware . 42
C.2.5 Cords . 42
Bibliography . 43

Figure 1 – Relationships between the generic cabling documents produced by
ISO/IEC JTC 1/SC 25 . 7
Figure 2 – Structure of Type A generic cabling. 13
Figure 3 – Hierarchical structure of Type A generic cabling . 14
Figure 4 – Structure of Type B generic cabling. 14
Figure 5 – Hierarchical structure of Type B generic cabling . 15
Figure 6 – Accommodation of functional elements . 16
Figure 7 – Cabling without the use of an SO . 17
Figure 8 – Accommodation of TEs (Type B generic cabling) . 17
Figure 9 – Test and equipment interfaces (Type A generic cabling) . 18
Figure 10 – Test and equipment interfaces (Type B generic cabling). 18
Figure 11 – Example of a Type A generic cabling system with combined BD and SD . 20
Figure 12 – Connection of functional elements providing redundancy for Type A
generic cabling . 20
Figure 13 –Transmission performance of a service distribution channel . 24
Figure 14 – Example of a system showing the location of cabling interfaces . 25
Figure 15 – Link options. 27
Figure 16 – Service distribution cabling models . 29
Figure A.1 – Wireless application coverage area grid . 38
Figure C.1 – Combined optical fibre backbone and service distribution channels . 42

Table 1 – Maximum channel lengths for Type A reference implementations . 21
Table 2 – Maximum channel lengths for Type B reference implementations . 22
Table 3 – Service distribution channel length formulae in metres . 30
Table A.1 – Supported wireless applications . 37
Table A.2 – Recommended SCP grid dimensions . 39
Table A.3 – Estimated SOs per SCP . 39

INFORMATION TECHNOLOGY –
GENERIC CABLING FOR CUSTOMER PREMISES –

Part 6: Distributed building services
FOREWORD
1) ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO 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. ISO and IEC technical
committees collaborate in fields of mutual interest. Other international organizations, governmental and non-
governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology,
ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
2) The formal decisions or agreements of IEC and ISO on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested IEC National Committees and ISO member bodies.
3) IEC, ISO and ISO/IEC publications have the form of recommendations for international use and are accepted
by IEC National Committees and ISO member bodies in that sense. While all reasonable efforts are made to
ensure that the technical content of IEC, ISO and ISO/IEC publications is accurate, IEC or ISO cannot be held
responsible for the way in which they are used or for any misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees and ISO member bodies undertake to
apply IEC, ISO and ISO/IEC publications transparently to the maximum extent possible in their national and
regional publications. Any divergence between any ISO, IEC or ISO/IEC publication and the corresponding
national or regional publication should be clearly indicated in the latter.
5) ISO and IEC do not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. ISO or IEC are not responsible
for any services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or ISO or its directors, employees, servants or agents including individual
experts and members of their technical committees and IEC National Committees or ISO member bodies for
any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or
for costs (including legal fees) and expenses arising out of the publication of, use of, or reliance upon, this
ISO/IEC publication or any other IEC, ISO or ISO/IEC publications.
8) Attention is drawn to the normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this ISO/IEC publication may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
International Standard ISO/IEC 11801-6 was prepared by subcommittee 25: Interconnection
of information technology equipment, of ISO/IEC joint technical committee 1: Information
technology.
ISO/IEC 11801-6 is to be read in conjunction with ISO/IEC 11801-1, which was created to
consolidate general requirements for generic cabling into a single standard which allows the
other standards in the ISO/IEC 11801 series to have a common reference.
This International Standard has been approved by vote of the member bodies, and the voting
results can be obtained from the address given on the second title page.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the ISO/IEC 11801 series, published under the general title Information
technology – Generic cabling for customer premises, can be found on the IEC website.
The contents of the corrigendum of April 2018 have been included in this copy.

– 6 – ISO/IEC 11801-6:2017 © ISO/IEC 2017
INTRODUCTION
The importance of cabling infrastructure is similar to that of other fundamental utilities such as
water and energy supply and interruptions to the services provided over that infrastructure
can have a serious impact. A lack of design foresight, the use of inappropriate components,
incorrect installation, poor administration or inadequate support can threaten quality of service
and have commercial consequence for all types of users.
This document specifies generic cabling for distributed building services and can be used
alone or in conjunction with all the premises-specific standards of the ISO/IEC 11801 series.
It has been prepared to reflect the increasing use of generic cabling in support of non-user
specific services and the sharing of information between such services, many of which require
the use of remote powered devices. The distribution of these services is implemented either
as a stand-alone structure and configuration or as an overlay provided to locations other than
those specified by premises-specific standards in the ISO/IEC 11801 series.
This document is not intended to replace the application of other premises-specific standards
in the ISO/IEC 11801 series but has been prepared in recognition of the fact that, although
certain functional elements of distributed building services cabling can be co-located with
those of other generic cabling infrastructures, they can be
a) specified, installed and operated by different entities than those responsible for other
generic cabling infrastructures that are installed within the premises,
b) specified and installed at a different time than other generic cabling infrastructures that
are installed within the premises.
Figure 1 shows the schematic and contextual relationships between the standards relating to
information technology cabling produced by ISO/IEC JTC 1/SC 25, namely the ISO/IEC 11801
series of standards for generic cabling design, standards for the installation, operation and
administration of generic cabling and for testing of installed generic cabling.

Figure 1 – Relationships between the generic cabling
documents produced by ISO/IEC JTC 1/SC 25
The generic cabling specified by this document provides users with
a) an application independent system capable of supporting a wide range of applications in a
range of installation and operating environments,
b) a flexible scheme such that modifications are both easy and economical,
c) a multi-vendor supply chain within an open market for cabling components.
In addition, this document provides
d) relevant industry professionals with guidance allowing the accommodation of cabling
before specific requirements are known, i.e. in the initial planning either for construction or
refurbishment and for further deployment as the requirements of areas are defined,
e) industry and standardization bodies with a cabling system which supports current products
and provides a basis for future product development and applications standardization.
Applications addressed in this document include, but are not limited to those applications in
ISO/IEC 11801:2017, Annex E, as used to support the following services:
1) telecommunications, e.g. wireless access points, distributed antenna systems;
2) energy management, e.g. lighting, power distribution, incoming utility metering;
3) environmental control, e.g. temperature, humidity;
4) personnel management, e.g. access control, cameras, passive infra-red (PIR) detectors,
time and attendance monitoring, electronic signage, audio-visual projectors;

– 8 – ISO/IEC 11801-6:2017 © ISO/IEC 2017
5) personal information and alarms, e.g. paging, patient monitoring, nurse call, infant
security;
6) intelligent building systems;
7) communications between devices (i.e. “internet of things”).
Physical layer requirements for the applications listed in ISO/IEC 11801-1:2017, Annex E
have been analysed to determine their compatibility with the cabling performance specified in
this document and, 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, this document
• specifies a structure for generic cabling supporting a wide variety of applications including,
but not restricted to, the applications in ISO/IEC 11801-1:2017, Annex E,
• adopts balanced cabling channel and link Classes E , F and F , specified in
A A
ISO/IEC 11801-1:2017,
• adopts optical fibre cabling channel and link requirements as specified in
ISO/IEC 11801-1,
• adopts component requirements, specified in ISO/IEC 11801-1, and specifies cabling
implementations that ensure performance of permanent links and of channels that meet or
exceed the requirements of a specified group (e.g. Class) of applications.
Life expectancy of generic cabling systems can vary depending on environmental conditions,
supported applications, aging of materials used in cables, and other factors such as access to
pathways (campus pathways are more difficult to access than building pathways). With
appropriate choice of components, generic cabling systems meeting the requirements of this
document are expected to have a life expectancy of at least ten years.
This document has taken into account requirements specified in application standards listed
in ISO/IEC 11801-1:2017, Annex E. It refers to International Standards for components and
test methods whenever appropriate International Standards are available.

INFORMATION TECHNOLOGY –
GENERIC CABLING FOR CUSTOMER PREMISES –

Part 6: Distributed building services

1 Scope
This part of ISO/IEC 11801 specifies generic cabling within premises that comprise single or
multiple buildings on a campus. It covers balanced cabling and optical fibre cabling.
This document has been prepared to reflect the increasing use of generic cabling in support
of non-user specific services and the sharing of information between such services that can
also incorporate the supply of power, including
1) telecommunications, e.g. wireless access points, distributed antenna systems,
2) energy management, e.g. lighting, power distribution, incoming utility metering,
3) environmental control, e.g. temperature, humidity,
4) personnel management, e.g. access control, cameras, PIR detectors, time and attendance
monitoring, electronic signage, audio-visual projectors,
5) personal information and alarms, e.g. paging, patient monitoring, nurse call, infant
security,
6) intelligent building systems.
This document specifies directly or via reference to ISO/IEC 11801-1
a) the structure and configuration for generic cabling for distributed building services,
b) the interfaces at the service outlet (SO),
c) the performance requirements for cabling links and channels,
d) the implementation requirements and options,
e) the performance requirements for cabling components,
f) the conformance requirements and verification procedures.
Safety (e.g. electrical safety and protection, fire) and electromagnetic compatibility (EMC)
requirements are outside the scope of this document, and are covered by other standards and
by regulations. However, information given by this document can be of assistance.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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.
ISO/IEC 11801-1:2017, Information technology – Generic cabling for customer premises –
Part 1: General requirements
ISO/IEC 14763-2, Information technology – Implementation and operation of customer
premises cabling – Part 2: Planning and installation
ISO/IEC 30129, Information technology – Telecommunications bonding networks for buildings
and other structures
– 10 – ISO/IEC 11801-6:2017 © ISO/IEC 2017
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 11801-1,
ISO/IEC 14763-2 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
building service
non-user specific service within premises including, but not restricted to, building automation,
security, access control, building management, wireless access points, information displays
and alarm systems
3.1.2
distributed building service
building service provided to locations additional to those specified in premises-specific
standards in the ISO/IEC 11801 series
3.1.3
network conversion interface
passive or active device allowing the attachment of cabling of different network topologies to a
service concentration point
3.1.4
service area
area in a room or facility where non-user specific equipment is placed and connected to the
same service concentration point or groups of service outlets
3.1.5
service area cord
cord connecting the service outlet to the terminal equipment
3.1.6
service concentration point
connection point in the Type A generic cabling between a service distributor and a service
outlet or a connection point offering connections to terminal equipment at the end of Type B
generic cabling
3.1.7
service concentration point cable
cable between a service concentration point and a service outlet
3.1.8
service distribution cable
cable connecting the service distributor to the service outlet(s) of Type A cabling or service
concentration point(s) of Type A or Type B cabling
3.1.9
service outlet
fixed connecting device where the service distribution cabling terminates
3.1.10
Type A generic cabling
service distribution cabling between the service distributor and the service outlet

3.1.11
Type B generic cabling
service distribution cabling between the service distributor and the service concentration point
when a service outlet is not used
3.2 Abbreviated terms
For the purposes of this document, the abbreviated terms given in ISO/IEC 11801-1 and the
following apply.
DAS distributed antenna system
HVAC heating, ventilation and air conditioning
MIMO multiple input, multiple output
NFC near field communication
OE EQP opto-electronic equipment
PIR passive infrared
PP patch panel
RFID radio-frequency identification
SCP service concentration point
SD service distributor
SO service outlet
WAP wireless access point
4 Conformance
For a cabling system to conform to this document the following applies.
a) The configuration and structure shall conform to the requirements outlined in Clause 5.
b) Channels shall meet the requirements specified in Clause 6 when subjected to
environment conditions, local to the channels (see NOTE below), as defined by the
applicable environmental Class(es) of Clause 6.
This shall be achieved by one of the following:
1) a channel design and implementation ensuring that the prescribed channel
performance of Clause 6 is met;
2) attachment of appropriate components to a permanent link or service concentration
point (SCP) link design meeting the prescribed performance class of Clause 7.
Channel performance shall be ensured where a channel is created by adding more
than one cord to either end of a link meeting the requirements of Clause 7;
3) for E environments, using the reference implementations of Clause 8 and compatible
cabling components conforming to the requirements of Clauses 9, 10 and 11, this is
based upon a statistical approach of performance modelling.
c) The interfaces to the cabling at the SO shall conform to the requirements of Clause 10
with respect to mating interfaces and performance when subjected to environment
conditions, local to the connecting hardware (see NOTE below), as defined by the
applicable environmental Class(es) of Clause 6.
d) Connecting hardware at other places in the cabling structure shall meet the performance
requirements specified in Clause 10 when subjected to environment conditions, local to
the connecting hardware (see NOTE below), as defined by the applicable environmental
Class(es) of Clause 6,
e) The requirements of ISO/IEC 14763-2 and ISO/IEC 30129 shall be met.
This document does not specify which tests and sampling levels should be adopted. Test
methods to assess conformance with the channel and link requirements of Clause 6 and
Clause 7, respectively, are specified in ISO/IEC 11801-1. The test parameters to be
measured, the sampling levels and the treatment of measured results to be applied for

– 12 – ISO/IEC 11801-6:2017 © ISO/IEC 2017
particular installations shall be defined in the installation specifications and quality plan for
that installation prepared in accordance with ISO/IEC 14763-2.
In the absence of the channel, the conformance of the link shall be used to verify
conformance with this document.
Specifications marked "ffs" are preliminary specifications, and are not required for
conformance to this document.
NOTE The applicable environment classification of ISO/IEC 11801-1:2017, 6.2.1, local to the cabling or cabling
component(s), is that of the environment immediately adjacent to the cabling or cabling component(s).
5 Structure of the generic cabling system
5.1 General
Clause 5 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
ISO/IEC 11801-1).
5.2 Functional elements
5.2.1 Stand-alone structure
In addition to the functional elements specified in ISO/IEC 11801-1, this document specifies
two implementations of generic cabling for distributed building services. This document
enables
– Type A generic cabling to the SO,
– Type B generic cabling to the SCP, thereby providing the opportunity for
• application-specific cabling to be installed between the SCP and terminal equipment,
• application-specific equipment to be connected at the SCP.
The specification of application-specific cabling and equipment that CAN be connected to the
SCP is outside the scope of this document.
Type A generic cabling uses the following functional elements and interfaces:
a) service distributor (SD) – equivalent to distributor 1 in ISO/IEC 11801-1;
b) service distribution cable – equivalent to fixed cable (cable Z) within cabling subsystem 1
in ISO/IEC 11801-1;
c) service concentration point (SCP) – equivalent to consolidation point in ISO/IEC 11801-1;
d) service concentration point cable (SCP cable) – equivalent to cable Y in ISO/IEC 11801-1;
e) service outlet (SO) – equivalent to TE outlet in ISO/IEC 11801-1.
Type B generic cabling uses the following functional elements and interfaces:
1) service distributor (SD) – equivalent to distributor 1 in ISO/IEC 11801-1;
2) service distribution cable – equivalent to fixed cable (cable Z) within cabling subsystem 1
in ISO/IEC 11801-1;
3) service concentration point (SCP) – equivalent to consolidation point in ISO/IEC 11801-1.
Groups of these functional elements are connected together to form cabling subsystems (see
5.3).
An SCP can support both Type A and Type B generic cabling.

5.2.2 Overlay structure
The structure of Type A and Type B generic cabling in association with generic cabling of
other standards in the ISO/IEC 11801 series is described in Annex B.
The use of cabling in accordance with this document may supplement the connections to
terminal equipment (TE) in the premises-specific standards and may affect the number of
such connections (e.g. TO of ISO/IEC 11801-2) provided.
5.3 General structure and hierarchy
5.3.1 Type A generic cabling
Type A generic cabling systems contain up to three cabling subsystems: campus backbone,
building backbone and service distribution 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 5.4.1 and 5.4.2. The functional
elements of the cabling subsystems are interconnected to form a hierarchical star topology as
shown in Figure 3.
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 ISO/IEC 11801-1). Passive connections
between cabling subsystems adopt either a cross-connect approach, by way of either patch
cords or jumpers, or an interconnect approach.
NOTE “Active” equipment can include powered (e.g. network switches) or non-powered devices (e.g. optical fibre
splitters). “Passive” equipment consists of connecting hardware (e.g. patch panels).
The SO shall use connecting hardware in accordance with Clause 10.
IEC
Figure 2 – Structure of Type A generic cabling

– 14 – ISO/IEC 11801-6:2017 © ISO/IEC 2017
IEC
Figure 3 – Hierarchical structure of Type A generic cabling
5.3.2 Type B generic cabling
Type B generic cabling systems contain up to three cabling subsystems: campus backbone,
building backbone and service distribution cabling. The cabling subsystems are connected
together to create a generic cabling system with a structure as shown in Figure 4. The
composition of the cabling subsystems is described in 5.4.1 and 5.4.3. The functional
elements of the cabling subsystems are interconnected to form a hierarchical star topology as
shown in Figure 5.
IEC
Figure 4 – Structure of Type B generic cabling

IEC
Figure 5 – Hierarchical structure of Type B generic cabling
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 ISO/IEC 11801-1). Passive connections
between cabling subsystems adopt either a cross-connect approach, by way of either patch
cords or jumpers, or an interconnect approach.
5.4 Cabling subsystems
5.4.1 Campus and building backbone cabling subsystem
See ISO/IEC 11801-1:2017, 5.3.2.
5.4.2 Service distribution cabling subsystem (Type A generic cabling)
The service distribution cabling subsystem extends from an SD to the SO(s) connected to it.
The subsystem includes
a) the service distribution cables,
b) the mechanical termination of the service distribution cables at the SO and the SD
together with associated patch cords and/or jumpers at the SD,
c) SCP(s) optional),
d) the SCP cable(s).
Although service area and equipment cords are used to connect terminal and transmission
equipment, respectively, to the cabling subsystem, they are not considered part of the cabling
subsystem because they can be application-specific. Service distribution cables shall be
continuous from the SD to the SO(s) unless an SCP is installed (see 5.7.4).
5.4.3 Service distribution cabling subsystem (Type B generic cabling)
The service distribution cabling subsystem extends from an SD to the SCP(s) connected to it.
The subsystem includes
a) the service distribution cables,
b) the mechanical termination of the service distribution cables at the SCP and the SD
together with associated patch cords and/or jumpers at the SD,
c) SCP(s).
– 16 – ISO/IEC 11801-6:2017 © ISO/IEC 2017
Although equipment cords are used to connect transmission equipment to the cabling
subsystem, they are not considered part of the cabling subsystem because they can be
application-specific. Service distribution cables shall be continuous from the service
distributor to the SCP(s).
5.4.4 Design objectives
5.4.4.1 Service distribution cabling
Service distribution cabling should be designed to support the broadest set of existing and
emerging applications within the environmental conditions defined in Clause 6 and therefore
provide the longest operational life. This will minimize oper
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