Yealink 's SIP Phones continue to evolve, the SIP-T4 Series have been designed by pursuing ease of use in even the tiniest details, these new design include paper label free design, new foot stand allows two posi-tions for the device, non-slip rubber feet, ergonomic recessed buttons, etc. Perfect for executive users and busy professionals. With Yealink Optima HD voice , clarity at is best.
| Display Type | 4.3 in 480 x 272-pixel color TFT display with backlight |
|---|---|
| Ethernet Ports | Dual-port Gigabit Ethernet (2 x RJ45 10/100/1000 Mbps) |
| PoE Support | Supported |
| SIP Accounts | Up to 16 SIP accounts |
| Codec Support | G.711 (A-law/ยต-law), G.722, G.723.1, G.726, G.729AB, iLBC, AMR-NB (optional), AMR-WB (optional) |
| Handset Type | HD Handset (Yealink Optima HD Voice) |
| Speakerphone | Full-duplex hands-free speakerphone with AEC |
| USB Port | Built-in USB port for recording and Bluetooth headset support |
| Bluetooth Support | Supported via optional BT40 USB Bluetooth dongle |
| Wi-Fi Support | Supported via optional WF40 USB Wi-Fi dongle |
We accept product returns for 30 days for just about any reason. If you bought the wrong item, don't like the fit of a headset, or just changed your mind we'll take it back. If you want to return any phones or parts please use the original packing materials as the items much be returned in the same condition as they were when purchased. You would be responsible for the return shipping costs, safe packaging, and insurance.
Most phones will ship within 2 business days. We are closed on weekends and don't ship products on Saturday or Sunday. Priority shipments usually ship the same business day, if it must ship the same day please call after you place your order to make sure we can fulfill it the same day.