See also:

DTMF suffix dialing
DTMF suffix dialing can be used for gaining access to network services or for controlling devices, e.g., to make a remote inquiry of an answering machine. The DTMF code is needed for this purpose. ...

What to do if...
Only a black screen is visible. Switch on the system. There are no options available on the screen. Switch over between the display screens. Radio stations or TV channels are grayed out ...

Opening/closing the sliding visor
Press the switch in the desired direction to the resistance point and hold it there. The sliding visor moves while the switch is being held. Press the switch in the desired directio ...