Mitel Superset 4015

The Mitel Superset 4015 is an affordable multi-line digital display business telephone providing user-programmable access to features/functionality of Mitel SX-200 and Mitel SX-2000 PBX business telephone systems.
7 programmable keys with LED indicators
20 character display showing caller ID, call status, and programming options
Compatible with Mitel SX-200 – Mitel Lightware 17 or higher Mitel SX-2000 – Mitel Lightware 29 or higher