Cell Phone
 

I recently purchased a white 1993 300e with 91,000 miles. Wonderful car with lots of power and decent fuel mileage. The car has an integrated Mercedes cell phone. My question is can the phone be configured to turn on when the ignition switch is on, then turn off when the ignition is off? Currently, the phone power switch must be depressed to turn the phone on and off, irrespective of ignition switch position. Assuming this is by design, can the phone be set to operate with the ignition? Thanks in advance...