An arrangement for controlling subscriber interface circuits

Details An arrangement for controlling subscriber interface circuits An arrangement for controlling subscriber interface circuits

H - Electricity

04

M

H04M 7/00 (2006.01) H04M 3/00 (2006.01) H04M 19/00 (2006.01) H04Q 1/28 (2006.01) H04Q 3/76 (2006.01)

Patent

CA 2259400

In an arrangement for controlling the operating mode of a subscriber line interface circuit (1, 2, 3) by means of mode control signals from a control circuit (5) which is connected to the subscriber line interface circuit (1, 2, 3), the subscriber line interface circuit (1, 2, 3) comprises at least one latch (L1, L2, L3) which is interconnected between the control circuit (5) and the subscriber line interface circuit (1, 2, 3). The latch (L1, L2, L3) is adapted to latch the mode control signals received from the control circuit (5) in response to latch enable signals received from the control circuit (5), and to apply those latched mode control signals to the subscriber line interface circuit (1, 2, 3) to control its operating mode.

Dans un dispositif permettant de commander le mode de fonctionnement d'un circuit d'interface (1, 2, 3) d'une ligne d'abonné au moyen de signaux de commande de mode provenant d'un circuit de commande (5) connecté au circuit d'interface (1, 2, 3) de la ligne d'abonné, ledit circuit d'interface comprend au moins un mécanisme de verrouillage (L1, L2, L3) interconnecté entre le circuit de commande (5) et le circuit d'interface (1, 2, 3). Le mécanisme de verrouillage (L1, L2, L3) est conçu pour verrouiller les signaux de commande de mode reçus du circuit de commande (5) en réponse aux signaux de validation du verrouillage reçus dudit circuit (5), et pour appliquer ces signaux de commande de mode verrouillés au circuit d'interface (1, 2, 3), de façon à commander son mode de fonctionnement.

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