To tackle the design problem at hand, it was necessary to undertake a paradigm shift and abandon classical NRZ (non-return-to-zero) binary coding with relatively slim signal processing. Firstly, we moved to a higher level modulation format and thereby limited the transmission bandwidth, which is now well below the notch of conventional twisted pair cables. The choice for the modulation format was also made through the calculation of the so-called channel capacity of the chosen cable. (The channel capacity gives a theoretical maximum of achievable data rates; practical implementations are well below that number.) This calculation showed that binary coding at available transmit powers could not carry a 10 GBps data rate. It also showed which modulation complexity would yield optimal data rate performance on the channel. Secondly, the signal processing was moved into the digital domain to acquire more complex and powerful signal processing algorithms.