| 摘要 |
The low frequency (LF) signal output (2) of the mobile telephone (1) is coupled to a LF signal input of the car radio (3) or the navigation system. The mobile telephone circuit output (6) is coupled to a circuit input (7) of the car radio for signaling of a call connection .The circuit input of the radio is connected to an LF source switch (5) for switching the LF signal input (4) of the mobile telephone. The switching input is coupled to the second control (9), which is set to a middle position when a call connection has been signaled.
|
