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Dedicated Leased Lines – PPP This lesson covers circuit switching connections; specifically dedicated leased lines. These are actual physical line cables that allow for a dedicated connection from one point to another. Dedicated leased lines are also known as point to point connectivity and allow us to use multiplexing, which allow multiple streams of data to be sent over one line and each line has two sending cables and two receiving cables. There are American standards as well as European for dedicated lease lines.