Method for spare switching of a train of data signals

摘要

The switching state of a change-over device has previously been controlled by a so-called event device. This has the disadvantage that a failure of an event device can result in faulty control of the change-over device. To avoid this, the change-over signal output by the event device to the change-over device is of such a type that the change-over device can carry out the switching to standby automatically when the event device fails.