Female jack and connection box providing a high capacity data line connection

The invention relates to an inserting opening, comprising is provided with a data cables plug slot-shaped body (1); the data cable comprises multiple wires; And comprises multiple electric conduction's contact pieces (3), which holds the leads of element (1) and stretches to the contact with an inserting and application. To the invention, a reducing disturbing effect, wherein the crosstalk, the is comprising a correcting circuit (13) compensation printed circuit board (2), which is a clamping element (1) and fixed on the contact pieces (3). The invention also relates to a such inserting opening junction box.