Mitel 5212 IP System Telephone - Refurbished2 line 20 character backlit display with contrast control Support for SIP or MiNET protocols Handsfree Speakerphone 12 programmable multi function keys with dual color LED indicators 8 fixed function keys: Hold, Superkey for feature access, fixed Message, Transfer Conference, Redial, Cancel, Speaker, Microphone Dedicated headset jack Dual Port Note: The Mitel 5212 IP Telephone is compatible with the Mitel Networks 3300 Intergrated Communications