The Mitel 5448 programmable key module provides additional key options to select Mitel IP phones. The Mitel 5448 works with the Mitel IP 5224, 5235, and 5324 phones and add 48 programmable keys that can be used as line appearances, call appearances, extensions, or other key features. The additional Mitel 5448 can be programmed through the attached phone or through the web based GUI.
