The Ooma Linx Remote Phone Jack is a wireless accessory designed for use with Ooma Telo or Office Wi-Fi systems. With a sleek black design and easy setup, this unit allows for secure and Wi-Fi friendly connectivity. It provides a single phone line jack interface for DSL/Phone connections, and features pass-through mode for fax machines and other devices. The Ooma Linx Remote Phone Jack is a versatile option for expanding your home or office networking capabilities.