SIST EN 50411-6-1:2022
(Main)Fibre management systems and protective housings to be used in optical fibre communication systems - Product specifications - Part 6-1: Unprotected microduct for category S and A
Fibre management systems and protective housings to be used in optical fibre communication systems - Product specifications - Part 6-1: Unprotected microduct for category S and A
1.1 Product definition
This document contains the initial, start of life dimensional, mechanical and environmental performance requirements which an unprotected microduct are expected to meet.
1.2 Operating environment
The tests selected combined with the severities and duration are representative of an outside plant for subterranean and/or aerial environment defined by:
— ETS 300 019 class 8.1 - underground locations (without earthquake requirement);
— EN IEC 61753 1 - category A (aerial environment) and category S (subterranean environment).
1.3 Quality assurance
Compliance with this document does not guarantee the manufacturing consistency of the product. This is expected to be maintained using a recognized quality assurance programme.
1.4 Allowed product types
This document covers all European Standards on optical fibre unprotected microducts. This includes, but is not limited to, EN 60794 5, Optical fibre cables - Part 5: Sectional specification - Microduct cabling for installation by blowing.
1.5 Allowed microduct connector types
This microduct standard allows the use of all European Standard microduct connectors, including: straight, reducer/enlarger stem, reducer/enlarger, close down, liquid block, liquid block with barb end, and end stop connectors. This includes EN 50411 2 8, Fibre organizers and closures to be used in optical fibre communication systems - Product specifications - Part 2-8: Microduct connectors, for air blown optical fibres, Type 1.
LWL-Spleißkassetten und -Muffen für die Anwendung in LWL-Kommunikationssystemen - Produktnormen - Teil 6-1: Ungeschützte Mikrorohre für die Kategorien S und A
Systèmes de gestion des fibres et boîtiers de protection destinés à être utilisés dans les systèmes de communication par fibres optiques - Spécifications de produits - Partie 6-1 : Microconduits non protégés pour les catégories S et A
1.1 Définition du produit
Le présent document contient les exigences de performances initiales, dimensionnelles, mécaniques et environnementales, de début de vie, attendues d’un microconduit non protégé.
1.2 Environnement de fonctionnement
Les essais sélectionnés, leurs sévérités et leurs durées sont représentatifs d’un site extérieur dans un environnement souterrain et/ou aérien défini par:
— la classe 8.1 de l’ETS 300 019 - environnement souterrain (sans exigences concernant les tremblements de terre);
— la catégorie A (environnement aérien) et la catégorie S (environnement sous-terrain) de l’EN IEC 61753 1.
1.3 Assurance de la qualité
La conformité au présent document ne garantit pas la cohérence de fabrication du produit. Il est attendu qu’elle soit suivie au moyen d’un programme reconnu d’assurance de la qualité.
1.4 Types de produits autorisés
Le présent document vient en complément de toutes les Normes européennes portant sur les microconduits non protégés pour fibres optiques. Il complète notamment, sans y être limité, l’EN 60794 5, Câbles à fibres optiques - Partie 5: Spécification intermédiaire - Câblage en micro-conduits pour installation par soufflage.
1.5 Types de connecteurs de microconduits autorisés
La présente norme sur les microconduits permet de compléter toutes les Normes européennes sur les connecteurs de microconduits, y compris: les connecteurs droits, avec réduction/agrandissement, à réducteurs/agrandisseurs, à fermeture, à blocage par liquide, à blocage par liquide à extrémité cannelée et à butée. Elle complète l’EN 50411 2 8, Organiseurs et boîtiers de fibres à utiliser dans les systèmes de communication par fibres optiques – Spécifications de produits – Partie 2-8: Connecteurs en microconduits de Type 1, destinés aux fibres optiques soufflées à l’air comprimé.
Sistemi za upravljanje z optičnimi vlakni in zaščitna ohišja za optične komunikacijske sisteme - Specifikacije izdelka - 6-1. del: Nezaščiteni mikrokanal kategorij S in A
1.1 Opredelitev izdelka
Ta dokument vsebuje začetne dimenzijske, mehanske in okoljske zahteve, ki naj bi jih na začetku svoje življenjske dobe izpolnjeval nezaščiteni mikrokanal.
1.2 Delovno okolje
Izbrani preskusi skupaj z zahtevnostjo in trajanjem so reprezentativni za zunanji obrat za podzemna in/ali nadzemna okolja, kot so določena v standardu:
– ETS 300 019, razred 8.1 – podzemne lokacije (brez zahteve pri potresu);
– EN IEC 61753-1 – kategorija A (nadzemno okolje) in kategorija S (podzemno okolje).
1.3 Zagotavljanje kakovosti
Skladnost s tem dokumentom ne zagotavlja doslednosti izdelave izdelka. Pričakuje se, da naj bi to vzdrževali v okviru priznanega programa za zagotavljanje kakovosti.
1.4 Dovoljene vrste izdelkov
Ta dokument zajema vse evropske standarde o nezaščitenih mikrokanalih iz optičnih vlaken. To vključuje, vendar ni omejeno na, standard EN 60794-5, Optični kabli – 5. del: Področna specifikacija – Okablenje mikrokanalov za montažo z vpihovanjem.
1.5 Dovoljene vrste konektorjev za mikrokanale
Ta standard za mikrokanale omogoča uporabo vseh evropskih standardnih konektorjev za mikrokanale, vključno z: ravnimi, stebli reduktorjev/povečevalnikov, reduktorji/povečevalniki, zaprtimi, tekočimi bloki, tekočimi bloki s koničastim koncem in končnimi konektorji. To vključuje EN 50411-2-8, Delilniki za optična vlakna in kabelske spojnice za optične komunikacijske sisteme – Specifikacije izdelka – 2–8. del: Konektorji mikrokanalov z zračnim vpihovanjem optičnih vlaken, tip 1.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50411-6-1:2022
01-junij-2022
Nadomešča:
SIST EN 50411-6-1:2011
Sistemi za upravljanje z optičnimi vlakni in zaščitna ohišja za optične
komunikacijske sisteme - Specifikacije izdelka - 6-1. del: Nezaščiteni mikrokanal
kategorij S in A
Fibre management systems and protective housings to be used in optical fibre
communication systems - Product specifications - Part 6-1: Unprotected microduct for
category S and A
LWL-Spleißkassetten und -Muffen für die Anwendung in LWL-Kommunikationssystemen
- Produktnormen - Teil 6-1: Ungeschützte Mikrorohre für die Kategorien S und A
Systèmes de gestion des fibres et boîtiers de protection destinés à être utilisés dans les
systèmes de communication par fibres optiques - Spécifications de produits - Partie 6-1 :
Microconduits non protégés pour les catégories S et A
Ta slovenski standard je istoveten z: EN 50411-6-1:2022
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
SIST EN 50411-6-1:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN 50411-6-1:2022
---------------------- Page: 2 ----------------------
SIST EN 50411-6-1:2022
EUROPEAN STANDARD EN 50411-6-1
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2022
ICS 33.180.20 Supersedes EN 50411-6-1:2011 and all of its
amendments and corrigenda (if any)
English Version
Fibre management systems and protective housings to be used
in optical fibre communication systems - Product specifications -
Part 6-1: Unprotected microduct for category S and A
Systèmes de gestion des fibres et boîtiers de protection LWL-Spleißkassetten und -Muffen für die Anwendung in
destinés à être utilisés dans les systèmes de LWL-Kommunikationssystemen - Produktnormen - Teil 6-1:
communication par fibres optiques - Spécifications de Ungeschützte Mikrorohre für die Kategorien S und A
produits - Partie 6-1 : Microconduits non protégés pour les
catégories S et A
This European Standard was approved by CENELEC on 2022-03-14. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50411-6-1:2022 E
---------------------- Page: 3 ----------------------
SIST EN 50411-6-1:2022
EN 50411-6-1:2022 (E)
Contents Page
European foreword .3
1 Scope .4
1.1 Product definition .4
1.2 Operating environment .4
1.3 Quality assurance .4
1.4 Allowed product types .4
1.5 Allowed microduct connector types .4
2 Normative references .4
3 Terms and definitions .5
4 Description .6
4.1 Unprotected microduct .6
4.2 Microduct functions .6
5 Variants .7
6 Dimensions of unprotected microduct .8
6.1 Outer and inner diameters .8
6.2 Unprotected microduct ovality .9
7 Materials .9
8 Tests . 10
8.1 Dimensional and marking requirements . 10
8.2 Performance requirements . 10
Annex A (normative) Sample size and product sourcing requirements . 13
Annex B (normative) Methods to determine microduct dimensions . 14
Annex C (normative) Test methods – High pressure resistance. 16
Bibliography . 17
Figures
Figure 1 — Cross section of typical unprotected microduct .6
Figure B.1 — Outer diameter measurement with snap gauge . 14
Figure B.2 — Inner diameter measurement with plug gauge . 14
Figure B.3 — Inner diameter measurement with plug gauge . 15
2
---------------------- Page: 4 ----------------------
SIST EN 50411-6-1:2022
EN 50411-6-1:2022 (E)
European foreword
This document (EN 50411-6-1:2022) has been prepared by CLC/TC 86BXA “Fibre optic interconnect,
passive and connectorised components”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2023-03-14
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2023-03-14
conflicting with this document have to be
withdrawn
This document will supersede EN 50411-6-1:2011 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
EN 50411-6-1:2021 includes the following significant technical changes with respect to
EN 50411-6-1:2011:
— updated reference of cable tests EN 60794-1-21;
— more variants with different nominal outer and inner diameter added that are available on the
market;
— updated the tests and test severities according to the new edition EN IEC 61753-1:2018.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
3
---------------------- Page: 5 ----------------------
SIST EN 50411-6-1:2022
EN 50411-6-1:2022 (E)
1 Scope
1.1 Product definition
This document contains the initial, start of life dimensional, mechanical and environmental performance
requirements which an unprotected microduct are expected to meet.
1.2 Operating environment
The tests selected combined with the severities and duration are representative of an outside plant for
subterranean and/or aerial environment defined by:
— ETS 300 019 class 8.1 - underground locations (without earthquake requirement);
— EN IEC 61753-1 - category A (aerial environment) and category S (subterranean environment).
1.3 Quality assurance
Compliance with this document does not guarantee the manufacturing consistency of the product. This
is expected to be maintained using a recognized quality assurance programme.
1.4 Allowed product types
This document covers all European Standards on optical fibre unprotected microducts. This includes,
but is not limited to, EN 60794-5, Optical fibre cables - Part 5: Sectional specification - Microduct cabling
for installation by blowing.
1.5 Allowed microduct connector types
This microduct standard allows the use of all European Standard microduct connectors, including:
straight, reducer/enlarger stem, reducer/enlarger, close down, liquid block, liquid block with barb end,
and end stop connectors. This includes EN 50411-2-8, Fibre organizers and closures to be used in
optical fibre communication systems - Product specifications - Part 2-8: Microduct connectors, for air
blown optical fibres, Type 1.
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.
EN 590, Automotive fuels - Diesel - Requirements and test methods
EN 60068-2-2, Environmental testing - Part 2-2: Tests - Test B: Dry heat (IEC 60068-2-2)
EN 60794-1-21, Optical fibre cables - Part 1-21: Generic specification - Basic optical cable test
procedures - Mechanical tests methods (IEC 60794-1-21)
EN 61300-1, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 1: General and guidance
EN 61300-2-34, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-34: Tests - Resistance to solvents and contaminating fluids of
interconnecting components and closures (IEC 61300-2-34)
EN 61300-3-1, Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-1: Examinations and measurements - Visual examination
(IEC 61300-3-1)
ISO 291, Plastics — Standard atmospheres for conditioning and testing
4
---------------------- Page: 6 ----------------------
SIST EN 50411-6-1:2022
EN 50411-6-1:2022 (E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
unprotected microduct
small, flexible, lightweight tube with an outer diameter typically less than or equal to 16 mm
Note 1 to entry: Unprotected microducts are designed to be contained within a loose or tight outer layer to
form a protected microduct.
3.2
protected microduct
one or more microducts surrounded by a protective sheath and/or protected by a duct/sub-duct
Note 1 to entry: Alternatively a microduct may be regarded as protected if it has a sufficient wall thickness.
3.3
microduct optical fibre cable
optical fibre cable suitable for installation by blowing into a microduct
3.4
microduct fibre unit
fibre unit that is suitable for installation by blowing into a microduct
Note 1 to entry: It differs from a microduct optical fibre cable in that it provides less protection to the fibres that
it contains.
3.5
burst pressure
point at which the microduct fails to contain p
...
SLOVENSKI STANDARD
oSIST prEN 50411-6-1:2021
01-april-2021
Sistemi za upravljanje z optičnimi vlakni in zaščitna ohišja za optične
komunikacijske sisteme - Specifikacije izdelka - 6-1. del: Nezaščiteni mikrokanal
kategorij S in A
Fibre management systems and protective housings to be used in optical fibre
communication systems - Product specifications - Part 6-1: Unprotected microduct for
category S and A
Systèmes de gestion des fibres et boîtiers de protection destinés à être utilisés dans les
systèmes de communication par fibres optiques - Spécifications de produits - Partie 6-1 :
Microconduits non protégés pour les catégories S et A
Ta slovenski standard je istoveten z: prEN 50411-6-1
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
oSIST prEN 50411-6-1:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN 50411-6-1:2021
---------------------- Page: 2 ----------------------
oSIST prEN 50411-6-1:2021
EUROPEAN STANDARD DRAFT
prEN 50411-6-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2021
ICS Will supersede EN 50411-6-1:2011 and all of its
amendments and corrigenda (if any)
English Version
Fibre management systems and protective housings to be used
in optical fibre communication systems - Product specifications -
Part 6-1: Unprotected microduct for category S and A
Systèmes de gestion des fibres et boîtiers de protection To be completed
destinés à être utilisés dans les systèmes de
communication par fibres optiques - Spécifications de
produits - Partie 6-1 : Microconduits non protégés pour les
catégories S et A
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2021-04-23.
It has been drawn up by CLC/TC 86BXA.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CENELEC 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 CEN-CENELEC Management Centre has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 68684 Ref. No. prEN 50411-6-1 E
---------------------- Page: 3 ----------------------
oSIST prEN 50411-6-1:2021
prEN 50411-6-1:2021 (E)
1 Contents Page
2 European foreword .3
3 1 Scope .4
4 1.1 Product definition .4
5 1.2 Operating environment .4
6 1.3 Quality assurance .4
7 1.4 Allowed product types .4
8 1.5 Allowed microduct connector types .4
9 2 Normative references .4
10 3 Terms and definitions .5
11 4 Description .6
12 4.1 Unprotected microduct .6
13 4.2 Microduct functions .6
14 5 Variants .7
15 6 Dimensions of unprotected microduct .8
16 6.1 Outer and inner diameters .8
17 6.2 Unprotected microduct ovality .9
18 7 Materials .9
19 8 Tests .9
20 8.1 Dimensional and marking requirements .9
21 8.2 Performance requirements . 10
22 Annex A (normative) Sample size and product sourcing requirements . 13
23 Annex B (normative) Methods to determine microduct dimensions . 14
24 B.1 Outer Dimensions . 14
25 B.2 Inner dimensions . 14
26 Annex C (normative) Test methods – High pressure resistance – safety . 16
27 C.1 Objective. 16
28 C.2 General . 16
29 C.3 Samples. 16
30 C.4 Procedure . 16
31 C.5 Requirements . 16
32 Bibliography . 17
2
---------------------- Page: 4 ----------------------
oSIST prEN 50411-6-1:2021
prEN 50411-6-1:2021 (E)
33 European foreword
34 This document (prEN 50411-6-1:2021) has been prepared by CLC/TC 86BXA “Fibre optic interconnect,
35 passive and connectorised components”.
36 This document is currently submitted to the Enquiry.
37 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 12 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
38 This document will supersede EN 50411-6-1:2011 and all of its amendments and corrigenda (if any).
39 prEN 50411-6-1:2021 includes the following significant technical changes with respect to
40 EN 50411-6-1:2011:
41 — updated reference of cable tests EN 60794-1-21;
42 — more variants with different nominal outer and inner diameter added that are available on the
43 market;
44 — updated the tests and test severities according to the new edition EN IEC 61753-1:2018.
3
---------------------- Page: 5 ----------------------
oSIST prEN 50411-6-1:2021
prEN 50411-6-1:2021 (E)
45 1 Scope
46 1.1 Product definition
47 This document contains the initial, start of life dimensional, mechanical and environmental performance
48 requirements which an unprotected microduct are expected to meet.
49 1.2 Operating environment
50 The tests selected combined with the severities and duration are representative of an outside plant for
51 subterranean and/or aerial environment defined by:
52 — ETS 300 019 class 8.1 - underground locations (without earthquake requirement);
53 — EN IEC 61753-1 - category A (aerial environment) and category S (subterranean environment).
54 1.3 Quality assurance
55 Compliance with this document does not guarantee the manufacturing consistency of the product. This
56 is expected to be maintained using a recognized quality assurance programme.
57 1.4 Allowed product types
58 This document covers all European Standards on optical fibre unprotected microducts. This includes,
59 but is not limited to, EN 60794-5, Optical fibre cables - Part 5: Sectional specification - Microduct cabling
60 for installation by blowing.
61 1.5 Allowed microduct connector types
62 This microduct standard allows the use of all European Standard microduct connectors, including:
63 straight, reducer/enlarger stem, reducer/enlarger, close down, liquid block, liquid block with barb end,
64 and end stop connectors. This includes EN 50411-2-8, Fibre organizers and closures to be used in
65 optical fibre communication systems - Product specifications - Part 2-8: Microduct connectors, for air
66 blown optical fibres, Type 1.
67 2 Normative references
68 The following documents are referred to in the text in such a way that some or all of their content
69 constitutes requirements of this document. For dated references, only the edition cited applies. For
70 undated references, the latest edition of the referenced document (including any amendments) applies.
71 EN 590, Automotive fuels - Diesel - Requirements and test methods
72 EN 60068-2-2, Environmental testing - Part 2-2: Tests - Test B: Dry heat (IEC 60068-2-2)
73 EN 60794-1-21, Optical fibre cables - Part 1-21: Generic specification - Basic optical cable test
74 procedures - Mechanical tests methods (IEC 60794-1-21)
75 EN 61300-2-34, Fibre optic interconnecting devices and passive components - Basic test and
76 measurement procedures - Part 2-34: Tests - Resistance to solvents and contaminating fluids of
77 interconnecting components and closures (IEC 61300-2-34)
78 EN 61300-3-1, Fibre optic interconnecting devices and passive components - Basic test and
79 measurement procedures - Part 3-1: Examinations and measurements - Visual examination
80 (IEC 61300-3-1)
4
---------------------- Page: 6 ----------------------
oSIST prEN 50411-6-1:2021
prEN 50411-6-1:2021 (E)
81 3 Terms and definitions
82 For the purposes of this document, the following terms and definitions apply.
83 ISO and IEC maintain terminological databases for use in standardization at the following addresses:
84 — IEC Electropedia: available at http://www.electropedia.org/
85 — ISO Online browsing platform: available at https://www.iso.org/obp
86 3.1
87 unprotected microduct
88 small, flexible, lightweight tube with an outer diameter typically less than or equal to 16 mm
89 Note 1 to entry: Unprotected microducts are designed to be contained within a loose or tight outer layer to
90 form a protected microduct.
91 3.2
92 protected microduct
93 one or more microducts surrounded by a protective sheath and/or protected by a duct/sub-duct
94 Note 1 to entry: Alternatively a microduct may be regarded as protected if it has a sufficient wall thickness.
95 3.3
96 microduct optical fibre cable
97 optical fibre cable suitable for installation by blowing into a microduct
98 3.4
99 microduct fibre unit
100 fibre unit that is suitable for installation by blowing into a microduct
101 Note 1 to entry: It differs from a microduct optical fibre
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.