Patent ID: 7783033

Claim:
A connector plug for use in a first network, the connector plug adapted to be inserted in one or more telephony jacks connected serially in the first network and comprising: pins for contacting respective contact members of said jacks, the pins including a first pair of pins and a second pair of pins; conductors for connection to a third network or third equipment; and a switching unit which is connected between said first pair of pins, said second pair of pins and said conductors, the switching unit having one position, in which said first pair of pins is connected to said conductors and said second pair of pins is disconnected from said conductors, and the switching unit having another position, in which said first pair of pins is disconnected from said conductors and said second pair of pins is connected to said conductors, so that, when the connector plug is inserted in one of the serially-connected jacks, signals from and to subsequent jacks are routed through the connector plug and, in said one position of the switching unit, the subsequent jacks are then connected to the third network or third equipment.