Abstract: An insulation displacement contact terminal block for providing electrical contact with a bundle of twisted pair wires having at least two differentially driven wire-pairs, a first wire-pair diverging from a second wire-pair at a diverging point of the bundle, and a first wire of each wire-pair untwisting from a second wire of that wire-pair at an untwisting point, the terminal block comprising a first contact-pair and a second contact-pair. The first contact-pair comprising first and second insulation displacement contacts for electrical connection with respective first and second wires of the first wire-pair. The second contact-pair comprising first and second insulation displacement contacts for electrical connection with respective first and second wires of the second wire-pair. The first and second insulation displacement contacts of each contact-pair are substantially equidistant from the untwisting point and are proximate to the untwisting point.