.Supports 2 SIP accounts and 4 multi-purpose line keys .Swappable faceplate to allow for easy logo customization .HD audio supporting all major codecs, including wideband codecs G.722 and OpusUp to 16 digital BLF Keys .Enterprise-level protection including secure boot, dual firmware images, and encrypted data storage .Dual switched auto-sensing 10/100/1000 Mbps Gigabit Ethernet ports with integrated PoE