This item is the external Microphone Kit for the Polycom Soundstation IP 7000 conference phone. Polycom develops, manufactures and markets a full range of high-quality, easy-to-use and affordable voice and video communication endpoints, video management software, web conferencing software, multi-network gateways, and multipoint conferencing and network access solutions. Polycom part number 2200-40040-001 is the Microphone kit for the Polycom Soundstation 7000 EX conference phone.