Interruption Device for a Data Communication Line

Interruption device for a communication line, the communication line comprising first and second cables each comprising a first group of wire(s) for the transmission of computer data, the first cable further comprising a second group of wire(s) independent of said computer data, the interruption device comprising:

• a box provided with first, second, and third input/output sockets with which the first and second cables and a third cable, respectively, can be connected,
• one or more interrupters, each connected between the first and second input/output sockets inside the box and actuable from outside the box, this/these interrupter(s) serving to connect/disconnect the wire(s) of the first group of the first cable respectively with/from the wire(s) of the first group of the second cable, and
• transmission means not comprising an interrupter and each connected between the first and third input/output sockets inside the box, these transmission means serving to connect the wire(s) of the second group of the first cable respectively with one or more wire(s) of the third cable.

Method of interrupting a transmission of computer data in a communication line comprising first and second cables in series each comprising a first group of wire(s) carrying said computer data and a second group of wire(s) independent of said computer data, according to which method one physically interrupts the link defined by the first group of wire(s) without interrupting the link defined by the second group of wire(s), by means of an interruption device connected between the first and second cables.