Mitel Superset 4001 Digital Telephone

The Mitel Superset 4001 telephone is a digital single line telephone. The Mitel 4001 has speed calling. The Superset 4001 enables users to set up a conference call. The Mitel Superset 4001 has the ability to transfer calls. The Mitel 4001 has a hold button. This phone is usable only with a Mitel SX-200/SX-2000 system with software revision LW 17/29 or greater; it will not work with an analog phone line. 7 programmable keys Line-powered