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)