Product Catalog: Mitel Networks: Previous Model Archive: Digital Phones and Peripherals Products Mitel Superset 4001 (Mitel Networks) Entry level, single-line, digital telephone provides user-friendly access to the features and functionality of Mitel Networks PBX communication systems. View Details Mitel Superset 4150 (Mitel Networks) Advanced digital touch-screen display telephone supports automatic call distribution (ACD) and provides intuitive access to the advanced features and functionality of Mitel Networks PBX communication systems. View Details Superset 4000 Headsets (Mitel Networks) Ergonomic headsets that plug directly into Superset 4000 telephones enabling users to enjoy increased mobility at the desktop. View Details Superset 5000/ 5200 IP Desktop Headsets (Mitel Networks) Ergonomic headsets that plug directly into Superset 4000 telephones enabling users to enjoy increased mobility at the desktop. View Details