| 摘要 |
PURPOSE: An automatic telephone connecting device having a telephone bell sound conversion function is provided to control a bell sound of an existing telephone to produce a necessary amount of sound, preventing a telephone bell from ringing in the existing telephone by controlling a telephone line, then to selectively ring a bell in other device, thereby variously changing the bell sound. CONSTITUTION: A local connection connector(1) transmits a local signal to an automatic telephone connecting device. A telephone bell sensor(2) senses a telephone bell, and transmits a detection signal. A telephone line environment detector(3) informs a user whether a call is ongoing or terminated. A telephone line connection controller(4) controls a connection between a local line and a telephone. A telephone environment detector(5) informs the user whether to make the call. A telephone connection connector(6) connects the telephone with the automatic telephone connecting device. A power unit(7) supplies power to the device. A CPU(8) produces various bell sounds to a speaker(11). A key button(9) is used to set various functions in the device. A bell sound amplifier(10) amplifies the produced bell sounds. The speaker(11) converts an electrical signal into a voice signal.
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