The HFC-E1 is an E1 controller chipset for PCI bus, produced by ChipCologne.
ChipCologne offers a HFC-E1 Evaluation Board, which is used by our project.
Other HFC-E1 cards should theoretically work, too - although this has not
been tested. The card has to support 120Ohms NT mode.
We set the Jumper and termination configuration as follows: * 120 Ohms Termination * 1: off * 2: on * TE Mode Config A (Pin1/2: Rx, Pin 4/5: Tx) * All JP6 and JP1 jumpers between pins 1 and 2 (left)