Digium EXP150 Expansion Module for D65The Digium EXP150 Expansion Module is designed for Digium D65 IP phones, providing an additional 20 programmable keys to streamline your call management. Its sidecar configuration is ideal for receptionists, administrators, and power users who need quick access to additional lines or features. With its robust construction and seamless integration, the EXP150 boosts productivity in busy office environments.