Graphical, backlit multilingual LCD (132 X 64) 4 soft keys AudioCodes Auto-provisioning Full SIP protocol support with extensive interoperability Integration with voice quality monitoring High voice quality Full duplex speaker phone Robust security mechanisms PoE Out of the box global redirection server support Multi-language user interface The 405HD IP phone is a cost-effective phone designed to offer the essential everyday features that the modern business environment demands.AudioCodes IP phones can be offered as part of our Managed IP Phones solution, which defines the IP phone as an IT-managed entity and delivers unique and complete lifecycle management of end-user desktop devices. Design Product colour Black Handset type Wired handset Product type IP Phone Performance Dual-Tone Multi-Frequency (DTMF) modes SIP info Phone features Call transfer Yes Full duplex Yes Message-waiting indicator (MWI) Yes Call park Yes Caller ID Yes Call waiting Yes Speed dialling Yes Call hold Yes Call