Enhance your Cisco UC phone experience with this grayscale expansion module. Designed to work seamlessly with the CP-7915 model, this module offers additional programmable keys to increase efficiency and productivity. Its user-friendly interface and easy installation make it an ideal choice for any business looking to streamline their communication system. This expansion module is brand new and ready to be added to your network. Its compatibility with the CP-7915 model ensures that it has been tested and proven to work effectively. Invest in this expansion module and take your communication system to the next level.