NEC DTR-1-1 Single-Line Phone (780020, Black, Refurbished)NEC DTR 1 1 Single Line Phone The NEC DTR 1 1 (Part #780020) is a simple and reliable single line digital phone designed for NEC communication systems. Built for basic call handling, it is ideal for environments that require dependable communication without advanced features. With its compact, no frills design, the DTR 1 1 is commonly used in lobbies, break rooms, warehouses, and general purpose areas where simplicity and durability are key. This