D305 SIP Desk Phone with HD Audio and Sensor Hook Switch Digital Signal Processor DSP enhanced audio quality Sensor hook switch Number of SIP Accounts 4 Up to 4 simultaneous calls XML browser Call lists for dialed, received, missed calls Local directory with 1000 entries Multiple language support DTMF in band / out of band / SIP INFO Interoperable with all major IP PBX platforms LCD Display 4 line backlit Context Sensitive Keys 4 Function Keys with LEDs 5 Desk or wall mounting Integrated 2 port 10/100 Mbps Ethernet switch RJ45 PoE 802.3af, Class 1 Power supply not included Music on hold Multicast paging 3 way conferencing Audio Codecs G.711 a law/u law, G.726, G.723AB, GSM 6.10, G.722 wideband SIP protocol RFC3261 VPN support Transport layer security TLS Optional US power supply 5V DC adapter, part number 4326 Handset 4P4C connector Headset 4P4C connector Add Snom EHS adapter for wireless headset EHS capability part number 2362 Package Includes phone, footstand, handset with cord, Ethernet cable, quick start guide