| Système de surveillance, de test et d'assistance à la maintenance des installations extérieures à fibres optiques |
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La maintenance revêt une grande importance pour la mise en place et la fiabilisation des installations extérieures à fibres optiques. Pour faire face à l'augmentation du trafic, on installe des câbles à fibres optiques à haute capacité. Ainsi, on utilise maintenant couramment des câbles comportant plus de 100 fibres, de sorte qu'un même câble est utilisé par de nombreux systèmes de transmission. Il faut des niveaux minimaux de maintenance et de test pour offrir une fiabilité élevée et grande rapidité de réaction.Après l'installation du câble, certaines fonctions (surveillance et contrôle de la fibre, etc.) doivent être exécutées sans perturber la transmission des signaux de données. En surveillant les fibres éteintes (c'est-à-dire, celles qui n'acheminent pas de trafic), on obtient une indication sur l'état des fibres en service car toute dégradation ou rupture dans un câble affecte toutes les fibres de la même façon. Toutefois, une fiabilité plus grande est obtenue en contrôlant les fibres acheminant du trafic. L'identification des fibres revêt également une grande importance pour le contrôle des réseaux à fibres car parfois il faut choisir entre plusieurs fibres d'un câble, même si celui-ci comporte de nombreuses fibres en service. |
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| Citation: |
https://handle.itu.int/11.1002/1000/5156 |
| Series title: |
L series: Environment and ICTs, climate change, e-waste, energy efficiency; construction, installation and protection of cables and other elements of outside plant
L.300-L.399: Maintenance and operation
L.300-L.329: Optical fibre cable maintenance |
| Approval date: |
2000-10-06 |
| Approval process: | WTSA |
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Status: |
In force |
| Observation: | Former ITU-T L.40 renumbered as ITU-T L.302 on 2016-02-15 without further modification and without being republished. |
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Maintenance responsibility: |
ITU-T Study Group 15 |
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Further details: |
Patent statement(s)
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ITU-T Supplement
|
Title
|
Status
|
Summary
|
Table of contents
|
Download
|
|
L Suppl. 4 (04/2016)
|
Guidelines for developing a sustainable e-waste management system
|
In force
|
here
|
here
|
here
|
|
L Suppl. 5 (12/2014)
|
Life-cycle management of ICT goods
|
In force
|
here
|
here
|
here
|
|
L Suppl. 20 (10/2015)
|
Green public ICT procurement
|
In force
|
here
|
here
|
here
|
|
L Suppl. 21 (04/2016)
|
Implementation guidance for small- and medium-sized enterprises on information and communication technology supply chain due diligence concerning conflict minerals
|
In force
|
here
|
here
|
here
|
|
L Suppl. 27 (10/2016)
|
Supplement on success stories on e-waste management
|
In force
|
here
|
here
|
here
|
|
L Suppl. 28 (10/2016)
|
Circular economy in information and communication technology; definition of approaches, concepts and metrics
|
In force
|
here
|
here
|
here
|
|
L Suppl. 32 (10/2016)
|
Supplement for eco-specifications and rating criteria for mobile phones eco-rating programmes
|
In force
|
here
|
here
|
here
|
|
L Suppl. 33 (10/2016)
|
Assessment of energy consumption of information and communication technology services
|
In force
|
here
|
here
|
here
|
|
L Suppl. 35 (06/2017)
|
Framework of disaster management for network resilience and recovery
|
In force
|
here
|
here
|
here
|
|
L Suppl. 41 (05/2021)
|
Requirements on energy efficiency measurement models and the role of artificial intelligence and big data
|
In force
|
here
|
here
|
here
|
|
L Suppl. 42 (05/2021)
|
Guidelines on the environmental efficiency of machine learning processes in supply chain management
|
In force
|
here
|
here
|
here
|
|
L Suppl. 43 (05/2021)
|
Smart energy saving of 5G base stations: Traffic forecasting and strategy optimization of 5G wireless network energy consumption based on artificial intelligence and other emerging technologies
|
In force
|
here
|
here
|
here
|
|
L Suppl. 46 (12/2021)
|
Definitions and recent trends in circular cities
|
In force
|
here
|
here
|
here
|
|
L Suppl. 47 (07/2022)
|
Examples of resource saving within the information and communication technology sector
|
In force
|
here
|
here
|
here
|
|
L Suppl. 49 (07/2022)
|
Overview on adaptation to climate change for information and communication technology networks
|
In force
|
here
|
here
|
here
|
|
L Suppl. 52 (10/2022)
|
Computer processing, data management and energy perspective
|
In force
|
here
|
here
|
here
|
|
L Suppl. 53 (10/2022)
|
Guidelines on the implementation of environmental efficiency criteria for artificial intelligence and other emerging technologies
|
In force
|
here
|
here
|
here
|
|
L Suppl. 54 (10/2022)
|
Guidance for assessing the greenhouse gas emissions consequences of the financial effects generated by information and communication technology
|
In force
|
here
|
here
|
here
|
|
L Suppl. 55 (10/2022)
|
Environmental efficiency and impacts on United Nations Sustainable Development Goals of data centres and cloud computing
|
In force
|
here
|
here
|
here
|
|
L Suppl. 56 (10/2022)
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Guidelines for connecting cities and communities with the Sustainable Development Goals
|
In force
|
here
|
here
|
here
|
| Title |
Approved on |
Download |
|
Guide on the use of ITU-T L-series Recommendations related to optical technologies for outside plant
|
2022
|
here
|
|
Guide on the use of ITU-T L-series Recommendations related to optical technologies for outside plant
|
2020
|
here
|
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Partnering for solutions: ICTs in Smart Water Management
|
2014
|
here
|
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Resilient pathways: the adaptation of the ICT sector to climate change
|
2014
|
here
|
|
Greening ICT Supply Chains – Survey on Conflict Minerals Due Diligence Initiatives
|
2012
|
here
|
|
Review of Mobile Handset Eco-Rating Schemes
|
2012
|
here
|
|
Boosting Energy Efficiency through Smart Grids
|
2012
|
here
|
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