Superset® 4001 Digital Telephone
Entry level, single-line, digital telephone provides user-friendly access to the features and functionality of Mitel Networks PBX communication systems.

Superset® 4015 Digital Telephone
Economical, multi-line, entry-level digital display telephone provides user-friendly access to the advanced features and functionality of Mitel Networks PBX communication systems.

Superset® 4025 Digital Telephone
Enhanced digital display telephone provides intuitive, user-friendly access to the advanced features and functionality of Mitel Networks PBX communication systems

Superset® 4150 Digital Telephone
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.