How many phone jacks are turned on at the house/apartment?
Usually German houses/apartments are equipped with only one phone jack. For more phone jacks, you may request a technician to re-wire your house. You will be required to pay an additional for the technician service call. It is possible that the previous tenant has already installed additional outlets in the residence which you can use. Before you make a commitment, please consider that TKS offers a few alternatives. TKS offers a variety of hardware solutions that could be exactly what you need. You could possibly purchase one Base-Phone station with one or more wireless Satellite phones to cover your needs.