RCA White Inline Phone Cord Coupler is designed to seamlessly connect two phone cords together, providing extended length for your telephone or fax modem lines. Featuring 4-wire telephone jacks, it is compatible with all 2 or 4 wire systems, ensuring versatile use. This coupler allows the use of a standard phone connector, making it an i solution for extending your phone connections without hassle. Model Number: TP262WHR