AudioCodes' 450HD IP Phone is a high-end, executive phone model delivering high-definition enterprise voice within Skype for Business unified communications environments. The main feature differentiating this model from the other IP phone models in AudioCodes' 400HD IP Phones Series is its large (800 x 400), graphical, high-resolution, 5-inch color touch (TFT) screen with an intuitive touch-oriented user interface design. This touch screen user interface enables up to eight Function Keys with multi-lingual support. The phone supports Gigabit Ethernet (GbE or 1 GigE). The phone also features support for two USB headsets and an expansion module is in the roadmap. Skype for Business certification is pending