Abstract: A telephone charge integrating and displaying device adapted for carrying out a new simplified charge system for telephone calls wherein all telephone charges are classified into, for example, only four block areas, (1) a local telephone call area, (2) a long distace telephone call area, (3) an international telephone call area reached by ordinary means, and (4) a telephone call area reached by space satellite or the like. The device is installed at each subscriber's telephone and the integrating operation, which is started when the handset is hooked off and is stopped when it is hooked on, is switched to a predetermined integration rate simply by dialing predetermined codes specified in accordance with each bloc area mentioned above.

Abstract: A calling party's telephone number displaying device in which, while the telephone set of a subscriber is ringing in response to calling signals from a telephone exchange office, the telephone number of a calling party and information are displayed on digital display units at high speed before lifting the handset. Accordingly, the subscriber can determine whether or not he should answer the call before picking up the handset. Thus, his privacy can be protected from a variety of telephone troubles such as wrong number and nuisance calls. The display is maintained as it is even if the handset is put back after the talk but it will be cleared automatically upon reception of the next call to display the telephone number of the next calling party. When the subscriber picks up the handset to make a call, the internal circuit is automatically changed to display a telephone number dialed by him.

Abstract: In an automatic telephone answering device, answering messages or signals recorded on a memorizing element are transmitted with a pause interval therebetween so as to allow a calling party to talk. An actuator is provided in a blank portion of the tape to energize a timer circuit for operating a loudspeaker for only 3 to 4 seconds to reproduce the voice of the calling party, so that a called party hearing the voice can recognize who the calling party is without picking up the hand-set of the telephone set.