We are unable to test the item fully. This Panasonic KX-TDA0172 DLC16 16-Port Digital Station Card is a great addition to any phone switching system. With its advanced features, it is perfect for businesses and industries in need of a reliable communication system. The card has been refurbished, ensuring that it meets the highest quality standards. The card is designed for use with the Panasonic KX-TDA0172 phone system and is a type of DLC16 card. It is compatible with a variety of phone models and is ideal for use in offices, businesses, and other settings. Get your hands on this top-of-the-line phone switching system today and experience the ultimate in communication technology.