The connection box is used as a connection or extension of commercially available shielded or unshielded twisted pair installation cables (CAT 5e, CAT 6, CAT 7) for damaged cables, cable extensions & cable replacements. Thus, the cables segments of structured cabling do not need to be installed new. This reduces the changing time & costs to a minimum. 6 incoming & 6 outgoing 8-wire cable can be connected without substantial impairment of the transmission characteristics & limitation of the maximum link lengths fixed. The installation is done with the help of a LSA-punch down tool.