The Cisco Voice Interface Card (VIC) is a specialized module that provides advanced voice communication capabilities for Cisco routers. This card is compatible with the Cisco 4451-X Integrated Services Router and is designed to optimize voice traffic, ensuring high-quality communication. With its compact design and user-friendly controls, the VIC offers maximum usability and efficiency, making it an essential component for businesses looking to enhance their voice communication systems. The card is refurbished and comes with a 90-day limited warranty, ensuring reliability and performance.