I believe you can get the operators manual for the phone from MB. I had no idea that a 94 was this advanced, but if it's telling you all this stuff, I guess it does. It may not be an instant answer to all your questions, but the best thing, rather than me finding one and telling you how to work it, is to get the manual for it. I can try on Monday finding out what the document number is for the phone manual, or you can call 1 800 FOR MERCedes, and they should be able to help you out.....
Gilly