A telephone has a built-in answering device comprising an outgoing message store and a control system programmable by pushbuttons for controlling the operational condition and sequence of the answering device. The advantages are compactness and ease of operation....http://www.google.fr/patents/US4359607?utm_source=gb-gplus-shareBrevet US4359607 - Telephone answering apparatus with solid state and dynamic tape storage
Telephone answering apparatus with solid state and dynamic tape storage
