Basic Call Features1. Press the mute key , then the mute key glows green, and the LCD display2. To disable the mute function, press again.DNDWhen you use the DND feature, the phone is to reject all incoming calls automatically and youcan see the mute icon shown on the Top of the LCD on idle page.To enable DND feature1. Press the DND soft key when the phone is idle, and then shown on the LCD.To disable DND feature1. Press the DND soft key again, and then there is no on the LCD.Key as SendTo configure Key as Send1. Press Menu →Features → Key as Send492. Press and or press key to select the enable choice.