The Vonage Internet Digital Phone Service Adapter is a reconditioned device that allows users to connect their traditional phone lines to the internet for enhanced communication capabilities. With two lines and a 3.5mm jack connector, this black adapter is perfect for homes or small offices looking to switch to a digital phone service. The VDV21RB-VD model was manufactured in 2002 in China and offers an Ethernet interface for easy setup and connectivity. This adapter is ideal for those looking to streamline their phone system and take advantage of VoIP technology. Unused