The invention relates to a data transmission module for use in a connector with a modularly configurable supporting frame, said data transmission module being designed for transmitting electrotechnical signals using at least one data cable. The data transmission module also comprises a housing and an insulating body which can be inserted into the housing, the insulating body accommodating at least two contact elements which are each connected to at least one wire of the data cable, and the insulating body accommodating at least one contact carrier which accommodates at least the two contact elements of the data cable.