Telephone Models
T31PT33GT46UT54WT57W
Physical Line Key Buttons24101029
Total Programmable Keys212 (4 page view)27 (3 page view)27 (3 page view)29
Maximum Line Monitoring Keys*1112626288
Supports SidecarNoNoYes, EXP43Yes, EXP50Yes, EXP50
Ethernet10/10010/100/100010/100/100010/100/100010/100/1000
WiFi EnabledNoNoWiFi adapter,
sold separately
YesYes
DisplayGrayscaleColorColorColorColor
Headset ConnectionRJ-9RJ-9RJ-9 or USB
(or Bluetooth,
adapter sold
separately)
RJ-9, USB,
or Bluetooth
(built-in)
RJ-9, USB,
or Bluetooth
(built-in)
USB Ports00211
USB On-Demand Call RecordingNoNoYes, with compatible
2.0 USB flash drive
(16GB 2.0 USB flash
drive is available from
POPP and stores up to
500 audio .wav files)
Yes, with compatible
2.0 USB flash drive
(16GB 2.0 USB flash
drive is available from
POPP and stores up to
500 audio .wav files)
Yes, with compatible
2.0 USB flash drive
(16GB 2.0 USB flash
drive is available from
POPP and stores up to
500 audio .wav files)
DirectoryAuto-PopulatedAuto-PopulatedAuto-PopulatedAuto-PopulatedAuto-Populated
Warranty1 Year1 Year1 Year1 Year1 Year
Optional AccessoriesPhone Power Supply
Wall Mount Brackets
Phone Power Supply
Wall Mount Brackets
Phone Power Supply
Wall Mount Brackets
USB Bluetooth Adapter
USB WiFi Adapter
Phone Power Supply
Wall Mount Brackets
Phone Power Supply
Wall Mount Brackets