Six-line x 16-character alphanumeric display Eight, menu-driven, context-sensitive softkeys 16 programmable multi-function keys with LED indicators 10 hard function keys: Mute, Speaker, Volume Up / Down, Directory (New!), Feature (Special), Redial, Hold, Transfer, Message Support for optional PKM 12 and PKM 48 modules Support for enhanced desktop applications: UC Express and UC Advanced Hands-free operation (half-duplex) Dedicated headset jack Speed Calling (System / Station) Intercom Calling Voice mail notification - large message waiting lamp Message handling (View / Reply) Call Logging (up to 20 entries) Store up to 10 Station (personal) Speed Dial numbers Hearing Aid Compatible handset Wall mountable