NEC Aterm IT42 ISDN Terminal Adapter (2 units) + S-point unit (built-in) + DSU separation unit (built-in) Accessories ・Connection cable (10m) ・Aterm IT42 Instruction Manual ・Quick Connection Guide ・S-point unit Instruction Manual ・DSU separation unit Instruction Manual ・CD disc (2) This is a used item. It was in use until July 2025. It was working without any problems until then. Please understand and purchase. If you are interested in this product, please feel free to contact us. Thank you.