ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación descargar pdf (Pagina 25)

Cenélec and ETSI. This international standard is not aimed at limiting the deploy-

ment of wired networks but at limiting their interfering emissions.

After five years of trying to find a consensus, and noticing that it is almost

impossible to define wired network radiation limits, it was decided to abandon the

idea of publishing an international standard for this network, focusing instead on

the international standard of the product.

In the meantime, in April 2006 the commission published a recommendation

defining a legal framework at the request of the entire PLC community. This text

recommends that member countries remove any barrier to the deployment of PLC

networks; in return, the installers, equipment manufacturers, and Internet access

providers undertake to comply with the requirements of the EMC directive and to

use any remote mitigation method in the event of confirmed disturbance over a

given frequency.

Extracts from the European Recommendation of April 6, 2005

1. Member States should apply the following conditions and principles to the provi-

sion of publicly available broadband powerline communication systems.

2. Without prejudice to the provisions of points 3 to 5, Member States should remove

any unjustified regulatory obstacles, in particular from utility companies, on the de-

ployment of broadband powerline communication systems and the provision of

electronic communications services over such systems.

3. Until standards to be used for gaining presumption of conformity for powerline

communications systems have been harmonized under Directive 89/336/EEC,

Member States should consider as compliant with that Directive a powerline com-

munications system which is:

•

made up of equipment compliant with the Directive and used for its intended

purpose.

•

installed and operated according to good engineering practices designed to meet

the essential requirements of the Directive.

The documentation on good engineering practices should be held at the disposal

of the competent national authorities for inspection purposes throughout the time

the system is in operation.

4. Where it is found that a powerline communications system is causing harmful in-

terference that cannot be resolved by the parties concerned, the competent au-

thorities of the Member State should request evidence of compliance of the system

and, where appropriate, initiate an assessment.

5. If the assessment leads to an identification of non-compliance of the powerline

communications system, the competent authorities should impose proportionate,

non-discriminatory and transparent enforcement measures to ensure compliance.

6. If there is compliance of the powerline communication system but nevertheless the

interference remains, the competent authorities of the Member State should con-

sider taking special measures in accordance with Article 6 of the Directive

89/336/EEC in a proportionate, non-discriminatory and transparent manner.

7. Member States should report to the Communications Committee on a regular ba-

sis on the deployment and operations of powerline communication systems in

their territory. Such reports should include any relevant data about disturbance lev

els (including measurement data, related injected signal levels and other data use

ful for the drafting of a harmonized European standard, interference problems and

6 Introduction

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