["The AudioCodes native Microsoft Teams C455HD IP phone is a feature-rich, top-of-the-range phone equipped with the latest technology to ensure a seamless Microsoft Teams experience at all times. The C455HD features a large, intuitive 5\" color touchscreen for exceptional ease of use, while stunning HD sound quality ensures every conversation is productive - or even more so. This device is also available as the C455HD-DBW along with a 5\" color touch expansion module that brings real life to your Microsoft Teams meetings and features dual-band Wi-Fi or Bluetooth for wireless headset use. AudioCodes IP Phones can be offered as part of our Managed IP Phone solutions, which treat the IP phone as an IT-managed entity and provide unique and complete lifecycle management of end-user desktop devices", "Native support for Microsoft Teams", "Graphic color TFT screen (5\" 1280 x 720) with multilingual support", "A 5\" (12.7 cm; 480 x 854) vertical color touchscreen expansion module to increase productivity and accommodate up to 50 contacts with one-click speed dialing (C455HD DBW)", "Touchscreen user interface with up to 8 programmable buttons", "8 telephone lines, 8 simultaneous calls per line", "GbE support", "Firmware upgrade via USB stick", "High voice quality", "Full duplex speakerphone", "Solid security mechanisms", "PoE or external power supply", "Out-of-the-box support for global redirect servers", "Multilingual user interface", "Central management with the AudioCodes One Voice Operations Center (OVOC) Device Manager"]