Display-Graphical display, 2 lines monochrome (not tiltable) Keys -Keypad 3 fixed function keys with red LEDs 8 freely programmable keys with red LEDs (upgradable with Key Module) Key labeling with paper strips Control keys +/-3 navigation keys. Acoustics-Hands free talking (full duplex) Wall-mountable OpenScape / HiPath Support OpenStage T TDM phones can be used with: HiPath 3000, HiPath 4000, OpenScape Business X1/X3/X5/X8 Octopus F200/F400/F650 & Octopus F X3/X5/X8