A method for operating a digital interface arrangement and a digital interface arrangement for exchanging data between at least one digital control unit operating in the baseband of a communication terminal and at least one radio transmitter/radio receiver device of said communication terminal. The baseband control unit is connected to a first number of data paths that can be used in parallel for exchanging data via a first interface device while each radio transmitter/radio receiver device is connected to at least some of the data paths that can be used in parallel for exchanging data via one respective second interface device. If at least two groups are provided, the first interface device and second interface device transmit data in a substantially simultaneous manner on the data paths contained in said groups by means of a multiplexing method.