Discernment of program controlled telephone signaling tone and control circuit

The utility model provides a discernment of program controlled telephone signaling tone and control circuit, includes voice recognition circuit U1 and rather than the control circuit U2 who is connected, voice recognition circuit U1 includes electric capacity C46 and C47, resistance R51~R54, diode D13~D15, control circuit U2 includes control chip U7, signal mode select switch S1, resistance R55~R63, electric capacity C48, diode D16~D19, relay K2, triode Q6 summation potential ware RP5, signal output node A is connected with control chip U7's 15 feet, a set of normally open switch that relay K2is passed through at the urgent button C1's of program controlled telephone both ends is not connected with ground. This circuit possesses the input interface and the control output interface of audio frequency, possesses the audio detection circuit simultaneously, can realize the relay control function to audio output. 种程控电话信号音识别及控制电路，包括语音识别电路U1和与其相连接的控制电路U2，语音识别电路U1包括电容C46和C47、电阻R51～R54、二极管D13～D15；所述控制电路U2包括控制芯片U7、信号模式