Mitel Superset 4125 Backlit Display Phone (Charcoal/Refurbished)The Mitel Superset 4125, combined with the Mitel Superset TAPI software passes call processing information, such as caller ID, or call log information, from the SX 2000 telephone system to the PC. It also allows access to electronic database information and features that are dependent on the TAPI compliant applications that a user may have on the PC. The multi line SUPERSET 4125 is the ideal solution for professional and management staff, and call