Device for initializing public telephone charges

H - Electricity – 04 – M

Patent

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379/74

H04M 17/02 (2006.01) H04M 15/30 (2006.01)

Patent

CA 1273140

A B R E G E La présente invention concerne un dispositif d'initialisation de la taxation téléphonique pour un poste téléphonique public. Le dispositif d'initialisation comprend essentiellement un circuit de brouillage (42) qui est inséré sur la ligne (26) lorsque le combiné est décroché et qui n'est inhibé que lorsque l'usager a actionné un bouton poussoir (20), et un circuit d'inhibition du microphone (42) qui est inséré lorsque l'usager compose le numéro appelé et qui inhibe en même temps que le circuit (42). La taxation commence lorsque le bouton (20) est actionné. Fig. 1

551985

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