Polycom SoundPoint IP 550 PoE (2200-12550-025) The Polycom SoundPoint IP 550 is a four-line SIP phone that delivers calls of unprecedented richness and clarity and supports a comprehensive range of cutting-edge features. New: This product is eligible for 2 Year Platinum Protection! SoundPoint IP 550 Features Unparalleled sound quality - Features Polycom's revolutionary HD Voice technology which brings a life-like richness and clarity to every call. Comprehensive Cutting-Edge Feature Set - Four lines Backlit high-resolution graphical display Shared call/bridged line appearance BLF presence text messaging and buddy lists Integrated XHTML micro-browser for productivity increasing Web-based applications Efficient installation and provisioning Remote zero-touch provisioning with support of a variety of servers Integrated IEEE 802.3af Power over Ethernet (PoE) support w/dual-port Ethernet switch Broad interoperability - Certified to support a rich set of features with a variety of leading SIP-based IP PBX and Softswitch platforms by Broadsoft Sylantro Interactive Intelligence/Vonexus Digium and other Polycom partners. Also interoperates with Microsoft Live Communications Server for telephony and presence. Choice of power options - Built-in auto-sensing IEEE 802.3af Power over Ethernet. Can also be powered by universal power supply (not included - see drop down option above).