Hardware:• Backlit display – 3.5” diagonal, 4 rows by24 characters with adjustable display angle• Ergonomic hearing aid compatible handset– supporting TTD acoustic coupler• 16 line appearance/feature key buttons– with dual LED’s (red, green)• 2-way speakerphone**• Message waiting indicator• Dual position flip stand• Four-way navigation cluster button• Three contextual softkey buttons• Volume button – (separate volume levels inthe handset, headset, speaker, and ringer)• Message button• Telephony application button – to returnto main telephone screen• Avaya Menu button – (options andsettings access)• Contacts button• Call log button• Redial button• Speaker button• Mute button• Headset button• Hold button• Conference button• Transfer button• Drop button• Ethernet (10/100) line interface witha secondary 10/100 port for collocatedlaptop or PC• Module interface – for 32 buttonexpansion module• PoE 802.3af class 2 device, alsosupports a local power supply• Headset interface• Wall mount kit available• Optional Gigabit Adapter for Gigabitconnectivity to a PC