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 purp ...

Switching between letters and numbers
Depending on the menu, you can switch between entering letters and numbers: ...

Voice operation
Vehicles equipped with the voice activation system: operation Vehicles not equipped with the voice activation system: depending on the equipment, the mobile phone can be voice operated as descri ...