SYSTEME AUTOMATIQUE POUR SERVICES SPECIAUX POUR ABONNES D'UN RESEAU TELEPHONIQUE

The system automatically makes special services available to telephone subscribers, in particular it produces printed telephone call bills on demand. When a bill for charges, for example, is requested by a subscriber (PA) who is connected to the telephone exchange (CT), the exchange connects his lin...

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Bibliographic Details
Main Author GEORGES ANDRE JEAN DEDRYVER, HANS GEORG REINHARD KIEFFER, ROGER COHEN ET LUCIEN ROBERT PIERRE BOUTY
Format Patent
LanguageFrench
Published 10.06.1983
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
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