See also:

Activating HDC
Press the button; the LED above the button lights up. ...

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. ...

Destination guidance with traffic bulletins
Semi-dynamic destination guidance When traffic bulletin reception is switched on, semi-dynamic destination guidance is active. The destination guidance system takes the available traffic informa ...