2 SIP lines, SIP hotspot 1000 phonebook entries, caller ID, hold, transfer 2.3" black and white screen with backlight HD sound on speaker and handset Opus codec: supports multiple audio applications including IP communications, conferencing, etc. Handling a 6-party conference Wireless headset EHS support Stand at two angles: 45 or 50 degrees Compatible with major IP PBXs: Asterisk, Broadsoft, 3CX, Metaswitch, Elastix, Avaya, etc. Two Fast Ethernet ports, PoE integrated