Multiplexer, protection switch unit, telecommunications...

H - Electricity – 04 – J

Patent

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Details

H04J 3/02 (2006.01) H03K 17/62 (2006.01) H04J 3/04 (2006.01) H04J 3/10 (2006.01) H04J 3/14 (2006.01)

Patent

CA 2220966

There is provided a multiplexer which in a multiplexing process selects an output signal from a plurality of input signals, a protection switch unit which includes one such demultiplexer and a telecommunications network which includes one such protection switch unit, the multiplexer has an output (OUT+, OUT-) and at least two inputs (IN1+, IN1-, IN2+, IN2-) where two input signals corresponding to the inputs are received. A first connection point (IN1+, IN2+) in each input is connected to a first transmission line (TLINE_1) via a respective first controllable signal forwarding device (Q1, Q2). An externally controllable switch means (S2, S1) is also connected to each output for forwarding a signal or at least a part thereof delivered to said input to a first transmission line (TLINE_1). The first transmission line (TLINE_1) is connected to a first connection point (OUT+) in the output, where a signal of good quality is obtained.

L'invention concerne primo un multiplexeur qui sert, au cours d'un processus de multiplexage, à sélectionner un signal de sortie parmi plusieurs signaux d'entrée, secundo une unité de commutation de secours qui comporte ledit démultiplexeur et tertio un réseau de télécommunications comportant ladite unité de commutation de secours, ledit multiplexeur ayant une sortie (OUT+, OUT-) et au moins deux entrées (IN+, IN-, IN2+, IN2-) qui reçoivent chacun un signal d'entrée respectif. Un premier point de connexion (IN1+, IN2+) au niveau de chaque entrée est relié à une première ligne de transmissions (TLINE_1) par l'intermédiaire d'un premier dispositif manoeuvrable d'acheminement des signaux (Q1, Q2). Un organe de commutation à commande externe (S2, S1) est également relié à chaque sortie pour l'acheminement d'un signal ou au moins d'une partie de signal reçu au niveau de ladite entrée vers une première ligne de transmission (TLINE_1). Cette première ligne de transmission (TLINE_1) est reliée à un premier point de connexion (OUT+) de la sortie, où l'on obtient un signal de bonne qualité.

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