LINESMAN TECHNINIAN COPPER TEST AND REPAIR KIT: LINE2 NETWORK INTERFACE DEVICE "NID" SERVING AREA INTERFACE "SAL" BOX TEST AND TROUBLE SHOOT COPPER LINES WITH ACCURATE CONNECTIONS. ALL YOUR TEST CONNECTORS AT YOUR FINGER TIPS PATENTED COMPONENTS. REDUCE TRUCK ROLLS AND REPEAT REPAIRS. INCREASE PRODUCTIVITY QUALITY AND PAIR ACCESS BY HAVING ALL THE TOOLS.