File:Bac multiplexeur 2!(8) 34Mbs SAT 3G.jpg

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Français : Multiplexeur PDH 16 x E1 = E3.

Organisé en poutres (colonnes verticales) et en bacs (groupement de 6 cartes).

Chaque bac est constitué de 6 cartes. La première, la seconde, la quatrième et la cinquième multiplexent 5 liens MIC E1 (2048kbit/s) et un lien E2 (8Mbit/s). Les liens MIC E1 (2048kbit/s) sont reliés métalliquement à une réglette sur un répartiteur numérique. Un lien MIC est constitué de deux paires de fils métalliques pour les deux sens de transmission (émission et réception).

La troisième carte multiplexent les 4 E2 (8Mbit/s) de ces 4 cartes voisines pour former un E3 (34Mbit/s) dont la continuité métallique entre l'équipement et le répartiteur HD sera assuré par une paire de câbles coaxiales (pour les deux sens de transmission : émission et réception). Notons que les liens E2 (8Mbit/s) sont directement multiplexés en E3 (34Mbit/s) dans le châssis par cette troisième carte. On multiplexe donc directement 16 E1 en un E3.

La sixième carte est simplement pour les alarmes.
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Author NVRB

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