Enjoy the full range of your phone with the ONN In-line Telephone Coupler. The in-line coupler connects two phone cords together to enhance reach. In addition to landline phones the convenient coupler is ideal for cords connected to answering machines modems fax machines caller ID displays and other devices. Expanding the range of your in-wall jacks is quick and easy. Matching jacks on either side of the coupler allow quick installation by connecting directly to standard phone plugs.