A method of manufacturing a terminal block for a telecommunication cable is disclosed, which includes providing a preformed substrate member comprising an elongated podium member having a plurality of wire receiving slots on an outer edge of the podium member and a plurality of electrical connector slots positioned within the podium member, wherein the plurality of wire receiving slots are arranged in pairs having a first and a second wire receiving slot, which are configured to receive one wire each of a pair of insulated electrical wires, an electrical connector in each of the plurality of electrical connector slots, each electrical connector having a pair of electrical contacts extending therefrom, and at least one insulated electrical wire attached to a first end of each of the electrical contacts; placing the substrate member in a mold; and injecting a dielectric material by a force of greater than 1 g into the mold.