The Mitel BB424 Button Box provides and additional 24 programmable buttons for your Mitel 485G IP Phone. Buttons can be used as a busy-lamp field to monitor other users and for one-touch transfers. They can also be programmed with more advanced features. Using four available page buttons, you can access up to 96 total programmable buttons on each BB424.
NOTE: Certified Refurbished units may have Mitel or ShoreTel logo.