Thanks D&J. I was hoping that would work since I have a bunch of unused phone cable. Wombat, to answer your question, I want to install connection panels in about 3 places around my layout so that you can "walk" with your train and connect the throttles in different locations. My layout is in a 10x12 room so it is not huge, but there is a center peninsula with a backdrop divider so if you are in one section, you cant really see the other section. I figure that normally it will just be me operating, but I could accommodate up to 3 operators and having these extra plug ins along with the main Digitrax Zephyer control, that would give us more flexability.