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. ...

Following the initial pairing
The mobile phone is detected/connected in the vehicle within a short period of time when the engine is running or the ignition is switched on. The phone book entries of the telephone ...

Hands-free system
General information Calls that are being made on the hands-free system can be continued on the mobile phone and vice versa. From the mobile phone to the handsfree system Calls that were begun ...