The HP Poly CCX EM60 Expansion Module is specifically designed to complement the Poly CCX 505 Desk Phone, significantly boosting its functionality. This expansion module allows users to manage large call volumes efficiently, making it an essential accessory for busy office environments. With its compatibility for data networking and optical networks, the CCX EM60 ensures reliable communication and seamless connectivity. Whether you're in a conference room or at your desk, this module enhances your phone's capabilities, providing a professional communication experience.