Core Features:Linux 6.1 versionTEE hardware encryption solutionDual system functionUnified firmware for T7X series T73U, T73W, T74U, T74W, T77W, T85W, and T87WUp to 16 SIP accountsSupports PoESupports USB headsets and EHSSupports colorscreen expansion modulesStand with 2 adjustable anglesWall mountableHandset with hall switch