The circuit concept allows using the board even on the programming track. Confirmation pulses from decoders are not limited the central unit can read them without any destruction. Non symmetric DCC is corrected. This allows using the diode trick for breaking according to Umelec on any central station including the popular I-Box.
The fast circuit also cuts spikes from the signal. So the circuit is also a Digital Signal Repair station as well. Of course it does not alter the information content, only the square shape is restored.