Hello, I also have to give you the spirit again because for a long time VF and their Twin-Card bothers me! The problem is that I have a K800 and just the car phone of Mercedes (believe code 354). If both phones are on and I turn off the phone then I am no longer able to reach for several hours on the car phone. Sometimes it is enough if I call someone with the car phone that it then works. Then I have to turn it off so that it can re-select and it I’m so excited again today that I called the customer service of my telephone provider again and there they told me it’s on the car phone and an old telephone standard?!?!!?!?!!!!!!!!!!!!!!!! I just want every phone to ring when it’s on and when one is turned off not the other one is silent for hours. Have the week now also spoken to my workshop and I was asked to It is said that I need a different telephone control unit and partly new cabling only to have a telephone a la Nokia 6310i. To do this, I have the uncertainty whether this will work as I hoped and at a price of at least €800. But you didn’t know directly about the strange log-in behavior of the Mercedes/Nokia fixed-mount telephone. I hope someone can show me a possibility here. Ega l what main thing I have 2 phones with a number that, when they are on, both ring. In the past there was an extra number for the “pink giant” at the Twin-Card for a Sim which was by a number higher than the actual phone number. But I think I deleted that everywhere without replacement because that was absolutely great. Well, see how the topic will end! Vllt. “MESSE” we get a new mobile hardware for the phone contract mfg Freddykl