Question 5/6
Copper cables, networks and fiber-optic connection hardware for broadband access
(Continuation of Question 3/ 6)
1 Motivation
Along with rapid evolution of technologies and application services, there are now great transitions in the area of access networks.
One of the main changes is the increased deployment of FTTx networks, which employs shortened copper loop lengths so that very high-speed data transmission up to tens of Mbit/s is possible. Secondly, the introduction of new technologies like SHDSL and VDSL, which use the expanded signal frequency over up to tens of MHz, need to have outside plant requirements defined. These changes make loop configurations complex and require special treatments regarding newly introduced techniques and systems located remotely, for example street cabinets or telephone poles. Therefore, in addition to the requirements and criteria on copper networks addressed through the earlier recommendation L.19, additional modifications need to be considered. Moreover, to ensure the integrity of services carried over metallic access network, already installed or to be installed, test and maintenance methods should be addressed.
2 Question
Study items to be considered include, but are not limited to:
- What requirements on copper loop are needed to be developed to accommodate various access technologies (for example,
VDSL, SHDSL, etc)?
- What are needed as new recommendations to be developed for planning, performance and construction of copper networks, including indoor and structured cabling, for broadband access on FTTx or any other topologies?
- What test and maintenance methods will be used on copper cable pairs for high-speed transmission?
An up-to-date status of work under this Question is contained in the SG 6 Work Program (http://www.itu.int/itudoc/itu-t/com6/index.asp).
3 Tasks
Tasks include, but are not limited to:
- Maintenance and enhancement of the existing Recommendation L.19
2007
- Developing the copper loop requirements, including indoor and structured cabling, for various access technologies
2007
- Recommendation for design, construction, and installation of new copper networks for
broadband access (including copper networks connected to optical fiber networks)
2007
- Test, acceptance and maintenance methods of copper subscriber pairs,
indoor network and structured cabling
2008
4 Relationships
-
Recommendations: ITU-T L.19
- Study Groups:
- ITU-T SG5 on EMC aspects
- ITU-T SG15 on xDSL techniques and access network architecture
- Standardisation bodies , fora and consortia:
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