Automatic telephone answering appts. - has circuit testing whether message has been recorded on cassette for answering call before operational mode switch can be operated

摘要

The telephone answering appts. has at least one exchangeable cassette with a recording medium for recording and reproduction of a message prepared for answering a telephone call. An operational mode switch has a position controlling the message reproduction when a call comes in. A control circuit controls message reproduction and further functions of the appts. When a cassette is changed in the switch position for the message reproduction, a test circuit tests whether a message has been recorded in the cassette. Only after the message has been detected is the control circuit connected to the supply voltage and the appts. set into the operating state.