Avaya Definity 6424D+M Digital Telephone (700276132) is an executives phone with all the features capabilities to run your business. The Definity 6424D+M provides a 2 line by 24 character LCD that shows Called Party/Calling Party ID (where available), date/time and call timer to see the length of your call. The Defintiy 6424 telephone also provides 24 programmable Call Appearance/Feature buttons, plus four Navigator keys for Menu, Next, Previous, and Exit. Definity 6424D+M telephone comes with a built in 2 way speakerphone, and eight personal ring options. Includes a Message Waiting Light, Internal Self Test to minimize the need for assistance and Group Listening so others can participate in listening without interrupting the call.