TELEPHONE AUTOMATIC RECORDING, LEFTING MESSAGE INTERFACE

The utility model relates to a telephone automatic recording and leaving message interface device, which has the functions when the device is spliced with a telephone line and a recorder. The device is characterized in that after switches K < 1 > and K < 2 > are closed, a ringing signal...

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Bibliographic Details
Main Author GUAN PEIHONG
Format Patent
LanguageEnglish
Published 29.01.1992
Edition5
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
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Summary:The utility model relates to a telephone automatic recording and leaving message interface device, which has the functions when the device is spliced with a telephone line and a recorder. The device is characterized in that after switches K < 1 > and K < 2 > are closed, a ringing signal of a telephone through a control relay J < 1 > triggers an audio signal generator and starts an automatic delay circuit to delay a control relay J < 2 >; the contact point of J < 2 > can cut off a ringing loop at the same time with dispatching an off-hook signal and communicating with the power supply. As soon as delay time is over, the contact point of J < 2 > comes back to initial state and meanwhile dispatches an on-hook signal to cut off the power supply of the recorder, and then waits for next talk. The device can automatically record and play sound by only switching K < 3 > and K ; moreover, recording and playing are proceeded at will and used with convenience.
Bibliography:Application Number: CN1991216344U