Patent ID: 6522151
Filing Date: 2003-02-18
Classification: H01R

Abstract:
A method of connecting a digital communication system to a data line, said method comprising:supplying a digital communication system having a data line isolation transformer and an external data port having at least first, second, and third contact points, one side of said transformer being electrically connected across said first and second contact points of said external port, neither of said first and second contact points being electrically connected to ground within said system, said third contact point being electrically connected to ground within said system; electrically connecting a jack, having at least first, second, and third contact points corresponding to said first, second, and third contact points of said external data port, to either a balanced data line pair or an unbalanced shielded signal conductor data line, wherein said jack is connected to said balanced data line pair by electrically connecting one wire of said data line pair to said first contact point of said jack and the other wire of said data line pair to said second contact point of said jack, and said jack is connected to said unbalanced shielded signal conductor data line by electrically connecting the signal conductor of said unbalanced data line to said first contact point of said jack and the shield of said unbalanced data line to said second and third contact points of said jack; and mechanically connecting said jack to said external data port, thereby electrically connecting corresponding contact points of said jack and said external data port.