6408 Digital Telephone Features 8 programmable call appearance/feature buttons Fixed feature buttons include conference, transfer, hold, speaker, mute, and redial Built-in 2-way speakerphone 8 personal ring options Compatibility The 6408 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
