Nortel Meridian M5209 Display Phone NT4X36 (Ash/Refurbished)Key Features: Large hinged display Supports multiple appearance directory numbers On hook dialing allows monitoring of call progress through the phone's speaker until the other party answers Ring again, call forward, message waiting, hold, release, volume control keys Calling and called name display 9 programmable line feature keys Compatible with Meridian M536 and M518 add on modules for line feature expansion