Your desk phone's been underpowered for a while. Twelve lines on one device, crystal-clear Opus audio, and two USB ports to bolt on a headset or Bluetooth adapter without hunting for dongles. The T43U replaces the T42S and keeps the same clean Yealink look your team already knows.
Runs off PoE, so no extra power brick cluttering the desk. Mount it on the wall or use the two-angle stand. If you're rolling out a fleet, the unified firmware across the T42U/T43U/T46U/T48U range means one template, one config file, less admin.
Need a colour display later? The EXP43 expansion slot's there. No need to swap the whole unit
| brand | Yealink |
| model | SIP-T43U |
| line_count | 12 |
| screen_size_inches | 3.7 |
| screen_resolution | 360x160 |
| screen_type | Backlit LCD (monochrome) |
| codec | Opus wideband |
| audio_technology | Optima HD Voice |
| usb_ports | 2 |
| poe | 1 |
| wifi_support | Via WF40/WF50 adapter |
| bluetooth_support | Via BT40/BT41 adapter |
| usb_headset | 1 |
| ehs_support | 1 |
| wall_mountable | 1 |
| stand_angles | 2 |
| expansion_module | EXP43 |
| dual_firmware_images | 1 |
| unified_firmware_range | T42U/T43U/T46U/T48U |
| replaces_model | T42S |
| category | VoIP Devices & Accessories |
