Provide users across the enterprise fast and full access to the rich functionality of Mitel Networks' PBX telephone systems.

Superset 4000 series digital business telephones support intuitive, user-friendly access to the advanced communications functionality and features of Mitel Networks' PBX business communications systems. They range from an affordable, single line digital set to sophisticated display sets with full support for computer telephony integration (CTI) applications.

The Superset 4000 series features sleek good looks and ease of use that make them a flexible, welcome addition in any business environment – from the backroom, to the corner office, to the front desk, and the customer interaction center. Their context-sensitive softkey/display combination – technology pioneered by Mitel Networks almost a decade ago – reduces user uncertainty and error, supporting efficient call processing, feature access, and personal preferences programming by displaying only those prompts appropriate to the function in progress. Their SuperKey and multiple personal keys support user programming for simplified feature access and speed dialing.