A network infrastructure device of an apparatus in one example comprises a receive interface and a transmit interface for a communication channel. The network infrastructure device is configured to pass a data stream for the communication channel from the receive interface, through a set of signal processing blocks, and to the transmit interface. The network infrastructure device is configured to analyze the data stream for an occurrence of a predetermined data pattern. The network infrastructure device is configured to automatically add and/or remove one or more signal processing blocks from the set of signal processing blocks upon the occurrence of the predetermined data pattern.