TAPI (1.4 )控件的特性如下：打外线电话，接听或拒绝内线电话。呼叫ID检测，DTMF音频，从电话记录或向电话回放WAV文件。-TAPI (1.4) controls the characteristics are as follows: get an outside line, or refuse to answer phones inside. Call ID detection, DTMF audio, from phone to phone records or WAV file playback.