The phone is still in the car and is in perfect condition. It works. Problem is that AT&T's new cellular service, what they call "M Life" in all the ads, is based on the GSM, or general service messaging, standard, whereas the Timeport phone from Motorola is a TDMA, or time division multiplex, standard.

The car shouldn't care what type encoding the phone uses for sending and receiving signals--the car should care about the control interface bulit into the phone. So what's needed is a phone that uses the GSM standard but can be controlled by the Mercedes interface.

So that's my lecture on cell technology. Wrong website! But you'd think I was discussing advanced mathematics when I try to ask this simple question to my dealer (doesn't get it), Mercedes (doesn't answer) or Motorola or AT&T (fuhgettaboutit). If anyone here has tried this, let me know!

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John C
1987 560SL 109,000 miles
2001 E320 103,000 miles
2007 E350 32,000 miles