Elegant design Support for up to 12 SIP accounts Opus Codec Support USB 2.0 2.7" 192x64-pixel 4-level greyscale graphical LCD with backlight Local phone book with up to 300 entries (search/import/export features) Intuitive user interface with icons and soft keys 6 memory soft keys (3 pages up to 15 buttons) with dual-colour illuminated LEDs for line status information 3-way conference call PoE support or PSU (optional) Paperless label design Dual-port Gigabit Ethernet Integrated stand with 2 adjustable angles Certified compatible with 3CX RJ9 Headset port compatible with a range of corded headsets EHS headset support Wall mountable Hearing Aid Compatible (HAC) Lifetime Warranty The Yealink T42S is a feature-rich SIP phone with Gigabit Ethernet pass through, superb audio quality and a rich visual experience. Acting as a replacement for the T42GN, the T42S offers a better overall performance with a faster, more responsive interface, an all-new USB port and Opus Codec support. Boasting unparalleled functionality and expansibility, the T42S comes ready for future Bluetooth, Wi-Fi and USB recording features. Specifications