6424D M Digital Telephone (Gray)

Features 2 line x 24 character LCD 24 programmable call appearance/feature buttons Navigation keys for menu, next, previous, and exit Fixed feature buttons include conference, transfer, hold, speaker, mute, and redial Built-in 2-way speakerphone 8 personal ring options 4 soft keys for menu functions 12 soft key default features with access to 18 alternative soft key features Equipped with an integrated headset jack Adjunct port for 100A analog interface module Compatibility The 6424D M Telephone is compatible with Definity R6.1 or higher and Avaya IP Office. It requires an available station port on a TN2181, TN2224/B/CP, IP403/406, IP400 Digital Station 16, or IP400 Digital Station 30. Includes  Refurbished Library Avaya Definity 6400 Series User Guide.pdf