The high performance Mitel 5235 IP Phone, Dark Grey (Dual Mode) 50004310 is a large high contrast monochrome, graphic, backlit, touch display (340 x 240 pixels). It has 24 programmable self-labeling touch screen keys (line appearances, speed dials, feature access) presented in either two pages of 12 keys or three pages of eight keys. 

Features: 

• Eight fixed function keys: Speaker, Volume / Contrast Up / Down Speaker, Microphone, Message, Hold, Transfer / Conference, Cancel
• Full duplex handsfree, Support for SIP and MiNET protocols, Contacts database with contacts,Peripherals and modules support: Line Interface Module, IP Conference Unit, Wireless LAN Stand, Gigabit Ethernet Stand
• My Phone: Customizable Idle Screen Softkeys, Layout, and Personal Keys
• Peripherals support for Programmable Key Modules (PKMs), Line Interface Modules, IP Conference Units
• Dual port
• Compression support (G.711, G.729)
• Intuitive GUI for expansive feature set access
• XML support for customization of applications
• Call History, Visual Voice Mail (with voice mail softkeys), Conferencing, Personal / Corporate Directory
• Built-in stylus
• Dedicated headset jack
• Speed calling
• Call hold (Place / Retrieve)
• Call transfer
• Automatic Call Distribution (ACD) agent and supervisor support
• Wall mountable
• Two-position, 35 degree tilting stand for better viewing angle
• Multiple powering options (802.3 af compliant)