The Avaya 5410 is a programmable phone designed for the Avaya IP Office phone system. This digital telephone is designed for users who are in need of a standard deskphone. The Avaya 5410 features a five line, graphical 4-grayscale display. The Avaya 5410 has eleven fixed feature keys and twelve programmable buttons that can be used for lines, extensions, and many other features. The Avaya 5410 also has a message waiting indicator light (a.k.a. "MWI") that flashes, alerting you anytime a new voicemail has arrived. A couple final features that are important to point out about the Avaya 5410 include an integrated headset jack and speakerphone.