9200用的是ht9200与isd1100,它们的语音输出都是通过一个电阻及电容后并在一起送到一个三极管进行放大的。...A20:Anitya,你的方法我试了一下,还是拨不通,自动拨号时可以听得到微弱的拨号音,但电话一点反映也没有,看来只有用-9200 with the ht9200 with isd1100. their voice output through a resistor and capacitor to together and after a triode amplification. ... A20 : Anitya, your approach I tried it, or the allocation of the passageway, Automatic dialing can hear faint dial tone, but the phone did not reflect the point, it seems Only