With a redundant structure, the DTS devices are equipped to communicate with each other and to carry out a permanent time comparison. This adjustment is necessary in order to compensate for technically unavoidable differences in the quartz drift of the two devices by means of software trimming. If one did not carry out this adjustment, the theoretically possible failure of the DCF / GPS synchronization and “free running mode” (in practice not perceived in part immediately) would run the risk of a defect in the first time server and the subsequent switchover A corresponding time jump occurs on DTS time server No. 2 in the network. However, such leaps in time are generally undesirable in IT networks, since they cause an undefined state and instability. In order not to be dependent on the IT network itself,