Photo of KX-UT248X-B
Display LCD Display 4-level grayscale graphical
LCD Size 4.4 inch
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 (Full Duplex)
Keys Programmable Keys 24 (3 pages of 6 keys)*²
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 6
SIP Compatibility RFC 3261 Standard SIP Server, Asterisk, Broadsoft, CommuniGate Pro, Panasonic SIP 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 10/100/1000 Mbps
PoE (Power over Ethernet) Yes
Bluetooth 1 (Bluetooth wireless technology 2.0)
Power Consumption PoE
Stand-by: approx. 3.5 W (ECO mode off), 2.3 W (ECO mode on)
Talking: 4.1 W (ECO mode off), 2.5 W (ECO mode on)
Max: 7.5 W

AC Adaptor
Stand-by: 4.0 W (ECO mode off), 2.2 W (ECO mode on)
Talking: 4.5 W (ECO mode off), 2.7 W (ECO mode on)
Max: 7.5 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) 1130 g
NOTE *1 Plantronics headsets can be used with these units. Not all headsets are guaranteed to operate.
*2 Requires setting at least 2 flexible buttons as a DN button for calling or receiving the phone.