Telephone capable of selectively accepting callers and enabling partial recognition of callers

摘要

A telephone set capable of selectively accepting callers and enabling partial recognitions of callers is disclosed, and the telephone set includes: tip and ring terminals; a first analogue switch connected to said tip terminal; a first bridge diode connected to the first analogue switch and the ring terminal; a wave rectifying circuit connected to the first bridge diode; a microprocessor connected to the wave rectifying circuit and the first analogue switch; an EEPROM connected to the microprocessor; a hook switch connected to the microprocessor; a selecting switch connected to the microprocessor; a second bridge diode connected to the tip and ring terminals; a hybrid IC circuit connected to the second bridge diode; a DTMF decoder connected to the hybrid IC circuit and the microprocessor; a power supply means for supplying the required power to the internal circuits; and a second analogue switch and a microphone.