Panasonic KX-HDV230B SIP Phone -  Corded SIP Phone - 6 SIP accounts - 132x64 pixel 2.3" graphical LCD display - 160x384 pixel 5" graphical self-labeling LCD with flexible function keys - Voice Codecs: G.722 (wideband HD), G.711a-law, G.711-law, G.729a - Up to 500 phonebook entries - Flexible Function Keys: 12 - Expand up to 224 keys with expansion module (HDV20B) - 3-way conference call support - Compatible with Broadsoft UC one - 2 10/100/1000Mbps Gigabit Ethernet ports - Low standby power consumption - XML application interface - Plug and play configuration - Changeable angle stand - Wall-mount adapter included - Headset Port: RJ9 - Full duplex speakerphone - Acoustic echo cancellation - IPv4/IPv6 - Power Source: PoE 802.3af or optional AC adapter (A422)