The SIP-T44U IP phone is a feature-rich business tool for excellent communication and enhanced functionality. The T44U, equipped with a Hall Switch, ensures quieter operation and a more peaceful environment. It is a 12-line IP phone that comes with a 2.8-inch color display with backlighting and EXP43 support. With Yealink's Optima HD Voice technology, the T44U delivers outstanding audio quality and crystal-clear voice communication. Note: The power supply is not included.