See also:

Adjustable level of each mode
*: For type A and B audio, AUX volume can be adjusted only when an AUX audio product is connected. ...

MODE button
Models without Hands-free system Models with Hands-free system The “MODE” button is used to select the desired audio mode. Each time it is pressed, the mode changes to the next one in the following ...

Turning on/off the Hands-free mode
Turning on/off the Hands-free mode 1) OFF hook switch 2) ON hook switch 3) Talk switch To turn on the Hands-free mode, press the OFF hook switch . To turn off the Hands-free mode, press the ON hoo ...