Ensure seamless communication at work with the Radius 150 corded telephone, equipped with features like on-hook dialling, a built-in Hi-Lo switch and a headset socket, allowing you to make calls with added convenience. Its incoming ringer LED indicator notifies you instantly when you receive calls, while its RJ-11 headset port with volume control function enables effortless communication. Headset port; 13 Memories (three one touch, ten two touch); On hook dialling.