AUTOMATIC RETRIEVING SYSTEM OF MESSAGE OF SOUND STORING SYSTEM

摘要

PURPOSE:To retrieve automatically a message by means of an existing interface, by retrieving automatically the presence or absence of the message with transmission/reception of a code signal using periodically a signal within a band between a sound storing device. CONSTITUTION:A control part 14 of an adaptor leads a subscriber line into a DC loop control circuit 15 if the subscriber line is not in busy. At the same time, the part 14 feeds an originating control to the circuit 15 and then transmits the own telephone number and the service code signal necessary for automatic retrieval when connection is finished at an exchange 8. A sound storing device 1 receives these signals at an intra-band signal transmitting/receiving part 4 and trnsmit them to a common control part 5. The part 5 performs an automatic retrieving control of a message in response to a receiving code. If a subscriber under execution of an automatic retrieval is equal to an incoming subscriber in a message storing mode, the part 5 transmits a signal showing the presence of a message. This signal is received by an intra-band signal transmitting/receiving circuit 13. Then the result of reception is sent to a control part 14, and the part 14 lights a lamp 11.