To keep it simple. Run a cat5 with A or B jacks on each end. Plug in a patch cable from your jack to the telco smart jack, it should be tagged or on a card in the unit with your companies name and the circuit number.(this is also the number the phone company usues) This is all telco to that jack. On the other end you will need a crossover or patch depending on the equipment. But at the end jack you have put in, you have extended the demarc from the telco to the equipment and they will need the same cord as if they were plugged directly into smartjk. You are just making one long cord. PS a $60 set of data wire testers will make you look like a pro and save you alot of trouble. .Practice with a patch cord. That's what a good wire will look like.