Abstract: A module plug includes a circuit board mounted in a mounting space on a casing to hold a front terminal rack and a rear terminal rack and a plurality of terminals in terminal holes on the front terminal rack and the rear terminal rack, a top cover covered on the casing and fastened to the rear terminal rack to hold a signal line, permitting the electrical wires of the signal line to be respectively forced into contact with the terminals on the rear terminal rack, the circuit board being convenient for the installation of an interference prevention circuit to prevent the terminals from interfering with one another.

Abstract: A telephone plug module including a plug body, and insert inserted into the plug body to carry a telephone line permitting the conductors to be respectively fastened to respective contact metal strips in respective grooves on the plug body, wherein the plug body has a downward locating hole on the inside, a vertical stop wall and a back flange and a beveled tail on the outside; the insert has a retaining block fitted into the downward locating hole to prevent backward movement of the insert relative to the plug body, and a vertical stop wall stopped against the vertical stop wall of the plug body, and two curved projecting strips stopped against the back flange and bevel tail of the plug body.