ETSI TS 101 573 V1.1.1 (2012-09)

Access, Terminals, Transmission and Multiplexing (ATTM); General engineering of optical building cabling

DTS/ATTM-02017

General Information

• Status: Published
• Publication Date: 06-Sep-2012
• Technical Committee: ATTM AT2 - Infrastructure, Physical Networks & Communication Systems
• Current Stage: 12 - Completion
• Due Date: 12-Sep-2012
• Completion Date: 07-Sep-2012

Standards Content (Sample)

Technical Specification
Access, Terminals, Transmission and Multiplexing (ATTM);
General engineering of optical building cabling

2 ETSI TS 101 573 V1.1.1 (2012-09)

Reference
DTS/ATTM-02017
Keywords
cable, intelligent homes & buildings, optical
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3 ETSI TS 101 573 V1.1.1 (2012-09)
Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction . 4
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 7
4 Shared building cabling . 8
4.1 Single fibre architecture (one fibre for each customer, shared among different operators). 8
4.2 Multi-fibres architecture (more than one fibre for each customer, dedicated to single operators or shared
among them) . 8
5 Distribution point . 8
6 Indoor cabling . 10
6.1 Riser cable . 10
6.2 Drop cable . 11
6.3 Floor Distributor . 11
6.3.1 Floor Distributor box . 11
6.3.2 Floor Distributor Breakout box . 11
6.3.3 Floor Distributor System . 11
7 Optical termination . 13
7.1 Optical External Network Testing Interface (optical ENTI) . 13
8 Optical budget and return loss . 14
9 Fibres . 14
10 Connections, connectors and cords . 14
History . 16

ETSI
4 ETSI TS 101 573 V1.1.1 (2012-09)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://ipr.etsi.org).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Access, Terminals, Transmission
and Multiplexing (ATTM).
Introduction
The present document is effective when the optical cabling in a building is shared between multiple optical access
operators.
Figure 1 shows a schematic representation of what could exist in a building with multiple operators' FTTH access
networks, in two distinct situations:
a) without shared cabling by using or not using a building distribution point (see figure 1);
b) With shared cabling between the building distribution point and the ENTI (see figure 2).

Figure 1: Individual building cabling for each operator
Many cables and boxes could be installed in common parts in this assumption which can cause permanent disturbance
for inhabitants. Besides, saturation of infrastructures could be reached with a strong impact on reliability of existing and
new cables and on maintenance issues.
A challenge for operators in that case could be to try to provide the condition for optical cabling sharing inside the
building, as shown in figure 2.
ETSI
5 ETSI TS 101 573 V1.1.1 (2012-09)

Figure 2: Shared optical building cabling for all operators
(when multiple "optical access networks" are deployed)
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6 ETSI TS 101 573 V1.1.1 (2012-09)
1 Scope
The present document specifies the optical cabling in a building when it is shared between multiple optical access
operators.
The proposed building cabling allows access to each operator to optical fibres in the building for multi-dwelling units
(MDU). The main goal of the concept is to be able to share the optical building cabling among different optical access
operators.
The present document details the different architectures of a shared optical cabling and each element of the building
cabling.
These elements are the distribution point, the indoor building cabling and the optical termination at the customer
premises.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] CENELEC/IEC EN 60794-2 series: "Optical fibre cables - Part 2: Indoor optical fibre cables".
[2] CENELEC EN 50399: "Common test methods for cables under fire conditions - Heat release and
smoke production measurement on cables during flame spread test - Test apparatus, procedures,
results".
[3] CENELEC/IEC EN 60794-2-20: "Optical fibre cables - Part 2-20: Indoor cables - Family
specification for multi-fibre optical distribution cables".
[4] ITU-T Recommendation L.87 (2010): "Optical fibre cables for drop applications".
[5] ETSI TS 102 873: "Access, Terminals, Transmission and Multiplexing (ATTM); Optical External
Network Testing Interface".
[6] CENELEC/IEC EN 61755-1: "Fibre optic connector optical interfaces - Part 1: Optical interfaces
for single mode non-dispersion shifted fibres - General and guidance".
[7] CENELEC/IEC EN 60793-2-50: "Optical fibres - Part 2-50: Product specifications - Sectional
specification for class B singlemode fibres".
[8] CENELEC/IEC EN 61754-4: "Fibre optic connector interfaces - Part 4: Type SC connector
family".
[9] CENELEC/IEC EN 61754-20: "Fibre optic interconnecting devices and passive components -
Fibre optic connector interfaces - Part 20: Type LC connector family".
[10] CENELEC/IEC EN 61754 series: "Fibre optic connector interfaces".
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7 ETSI TS 101 573 V1.1.1 (2012-09)
2.2 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
Not applicable.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
building operator: operator who installs and is responsible for the maintenance of the vertical and/or horizontal
cabling in the building and gives an access to it to the other operators
building optical line: optical line between the distribution point at the building basement and the customer outlet
customer outlet: allows the connection of fibre(s) from a cable to the ONT
dedicated fibre: fibre dedicated for only one operator, which is available permanently for this operator
NOTE: The fibre may be part of an indoor cable or of a blowing-based microducts.
distribution point: point that allows the connection of the outdoor cable (feeder and / or drop) to the indoor (in-house
or building) cable
NOTE: The type of connection may be a fusion splice or other optical connection.
drop cable: individual cable which links up the distribution point to the optical external network testing interface
(ENTI)
NOTE: This cable can be composed by one or more fibres.
floor distributor: if exists, is situated on one floor and distributes fibres or indoor cables on one or across the floor(s)
to each customer/ individual apartments
outdoor drop cable: outdoor cable that comes into the building, ending at the distribution point
optical External Network Testing Interface (ENTI): physical point at which a subscriber is provided with access to
an optical communications network
NOTE: This is actually the optical connector adapter in the customer outlet.
shared fibre: fibre shared between several operators, which is available temporarily or permanently for one operator.
vertical cabling: part of the building cabling between the distribution point and the floor distributor (when it exists.) or
the ENTI
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
APC Angled Physical Contact
ENTI External Network Testing Interface
FTTH Fibre To The Home
LC Lucent Connector
MDU Multi Dwelling Unit
ONT Optical Network Termination
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8 ETSI TS 101 573 V1.1.1 (2012-09)
PON Passive Optical Network
SC Subscriber connector
UPC Ultra Physical Contact
4 Shared building cabling
The building operator or building owner may take the initiative in cabling a building. They should expect to give the
access to telecom operators to the optical building lines with a distribution point at the building basement. The number
of operators should be limited by a maximum, for practical deployment reasons and based on the real needs of the
market.
The "building operator" deploying the building optical cabling could be in charge of the installation and/or maintenance
of this sharing point. Usually this is the first operator who comes in.
The shared building cabling combined with the distribution point should support both Point to Point and Point to
Multipoint access network topologies. So, a Point to Point cabling shall be used by all telecom operators between the
building basement and customer outlets or External Network Testing Interfaces (ENTI).
4.1 Single fibre architecture (one fibre for each customer,
shared among different operators)
Choice could be made to deploy only one fibre per customer in the vertical part of the building and to share it between
the different operators. This choice could be made by the building operator or by the owner of the building, depending
on free room in the vertical shaft or may be subject of co-operation contracts between operators.
Telecom operators could have access to shared fibres at the distribution point. Each fibre is temporarily assigned to one
operator when needed to give access to its services for customers.
The single fibre dedicated to the customer could be contained in a single fibre drop cable or in a multi-fibres riser cable
(see clause 6).
4.2 Multi-fibres architecture (more than one fibre for each
customer, dedicated to single operators or shared among
them)
Choice could be also made to deploy a multi-fibres architecture based on the installation of minimum 2 fibres per
apartmen
...