zhangjingyu 
1.connect an 8-pin mic plug to the handset as described above.
1.如上所述，将8针麦克风插头连接到手柄。

2.insert the connected 8-pin mic plug into the mic jack on the front panel.
2.将连接的8针麦克风插头插入前面板上的麦克风插孔。

3.when the handset is placed on a hanger as shown in figure 23,the received tone is heard from an internal or external speaker (the switch is activated).the handset speaker is cut off.
3.如图23所示，当手机放在挂架上时，接收到来自内部或外部扬声器的声音（开关被激活）。手柄扬声器被切断。

4.when the handset is removed from the hanger as shown in figure 24,the internal or external speaker is cut off(the sp switch is deactivated).the received tone is heard from the handset speaker.
4.如图24所示，当手柄从挂架上取下时，内部或外部扬声器被切断（sp开关被关闭）。从手柄扬声器听到接收到的声音。

5.when the ptt switch of the handset is pressed,the set enters the transmission mode.
5.当按下手柄的ptt开关时，装置进入传输模式。

6.speak over the handset microphone.
6.通过手持话筒讲话。

7.when the ptt switch is released the set enters the reception mode.
7.松开ptt开关后，装置进入接收模式。