Not a good idea. This is what will happen if you connect a cord or wire to the 1st set of lugs in that terminal. First time it rains or someone steps on the end and smashes it into the soil, the ends of that cord or wire will get wet, and put a short and or grounds on the tip and ring of that line. The customer will call telco repair, a tech will get dispatched. If that is the serving terminal (If you already see drop wires attached to those lugs), then the tech will disconnect the offending wire and report a wire tap to their supervisor who will report it to telco security. If it is not the serving terminal, some dumb tech will just change the cable pair because they are too lazy to look for the cause of the trouble and leave those lugs dead. There are other ways!