1. A direct equalization communications system, comprising: an isolation switch connected to a receiving path, an amplifier connected to said isolation switch, a slicer connected to said amplifier, a received data detection circuit connected to said slicer, a filter coefficient calculation circuit connected to said slicer and a known training sequence providing circuit, a programmable filter circuit connected to said filter coefficient calculation circuit for equalizing data to be transmitted, a dual port switch having one port connected to said programmable filter circuit and having a second port connected to a circuit for providing a transmit training sequence, a D/A circuit connected to said dual port switch, and a line driver connected to said D/A circuit, said isolation switch and a transmission path.