Définition de «SDH»

Contents
SDH
Angl : Synchronous Digital Hierarchy.
Fr : hiérarchie numérique synchrone.

Cœur d’une architecture de transmission destinée aux infrastructures de réseaux publics de télécommunication, à base de fibre optique.
Contrairement à la PDH, la hiérarchie numérique synchrone offre la possibilité d'insérer ou d'extraire des voies sans opérations de multiplexage/démultiplexage. La topologie de SDH peut être maillée, mais est le plus souvent constituée d'un double anneau.
Consulter la page sur SDH.

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Document created the 19/03/2002, last modified the 01/08/2024
Source of the printed document:https://www.gaudry.be/en/glossaire/sdh

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