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 The middle range model features 24 flexible buttons for easy operation.       - 4 SIP accounts
      - 6 line display for features and for CID/dialled number*1
      - HD Voice (G.722)
      - 500 entry phonebook
      - 3-way conference call support
      - Compatible with Asterisk, Broadsoft and CommuniGate Pro
      - 2 x 10/100M ports, PoE
      - Low standby power consumption
      - XML Application Interface
      - 24*2 Feature keys / BLF keys
      - Electronic hook switch (Plantronics)
      - Plug and Play configuration
      - Ergonomic recessed button
      - Cable concealing back
      - Long handset cords
      - Non-slip rubber feet
      - Changeable angle stand
      - Wall mounting
                               | Display |                                 | LCD Display |              Monochrome Graphical |                                 | LCD Size |              242 x 109 pixels – 6 lines |                                 | LCD Contrast |              6 levels |                                 | LCD Backlight |              On/Auto/Off |                                 | Install Options |                                 | Desk Mount Tilt |              Yes – 2 positions |                                 | Wall Mount |              KX-A433 (optional) |                                 | Power Adaptor |              KX-A239 (optional) |                                 | Audio Features |                                 | Handset, Speaker, Headset Volume |              8 levels (includes echo cancellation and distortion prevention) |                                 | Ringtones |              32 |                                 | Ringer Volume |              6 levels + Off |                                 | Headset Port |              2.5 mm |                                 | Electronic Hook Switch Control Port*1 |              3.5 mm |                                 | Audio Codec |              G.711a-law / G.711µ-law / G.722 (wideband) / G.729a / G.726 (32K) |                                 | HD Voice |              Yes |                                 | Speaker Phone |              Yes |                                 | Keys |                                 | Programmable Keys |              24 |                                 | Software Features |                                 | Phone Book (Entries) |              500 |                                 | Call Log Entries |              30 incoming calls + 30 outgoing calls |                                 | Conferencing |              3 parties (within terminal – multi-party dependent on server) |                                 | XML |              Yes |                                 | Music on Hold |              Supplied by Host Service (PBX / SIP Server) |                                 | IP Features |                                 | SIP Accounts |              4 |                                 | SIP Compatibility |              RFC 3261 Standard SIP Server, Asterisk, Broadsoft, CommuniGate Pro, Panasonic IP PBX |                                 | IP Version |              IPv4 |                                 | DHCP Client |              Yes |                                 | DNS |              Yes |                                 | HTTP |              Yes |                                 | HTTPS |              Yes |                                 | SNTP Client |              Yes |                                 | VLAN (802.1q) |              Yes |                                 | QoS (DiffServ) |              Yes |                                 | Configuration |                                 | Plug & Play Configuration |              Server based configuration, TR-069 |                                 | Manual Configuration |              Internal web Configurator, Local (LCD based) network configuration |                                 | Interface |                                 | Ethernet Ports |              2 |                                 | Ethernet Interface |              10/100 Mbps |                                 | PoE (Power over Ethernet) |              Yes |                                 | Power Consumption |              PoE              Standby: 1.8 W (ECO mode off), 1.3 W (ECO mode on)              Talking: 2 W (ECO mode off), 1.5 W (ECO mode on)              Max: 6 W                            AC Adaptor              Standby: 1.6 W (ECO mode off), 1 W (ECO mode on)              Talking: 2 W (ECO mode off), 1.5 W (ECO mode on)              Max: 6 W  |                                 | Operating Environment |              0 °C - 40 °C (32 °F - 104 °F) |                                 Dimensions              (Width x Depth x Height; handset on cradle, stand attached) |              High position:              267 mm x 170 mm x 180 mm              Low position:              267 mm x 187 mm x 155 mm |                                 Weight              (with handset,handset cord and stand) |              1120 g |                   
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