Mitel Superset 4150 Speaker Display Phone (9132-150-100, Light Grey, Refurbished)Mitel Superset 4150 Speaker Display Phone (9132 150 100) The Mitel Superset 4150 (Part #9132 150 100) is a dependable digital desk phone designed for Mitel business communication systems. Featuring a clear LCD display, programmable feature keys, and speakerphone capability, it is ideal for office professionals and moderate call handling environments. Part of the Mitel Superset series, this phone delivers reliable performance and intuitive operation,