| Feature | Details |
|---|---|
| Model | Yealink SIP-T31W |
| Series | T3 Series |
| Type | Wireless Desktop VoIP IP Phone |
| Display | 2.3-inch monochrome LCD display (132x64 pixels) |
| Audio Codecs | G.711, G.729, G.722, Opus, iLBC, AMR, and others |
| Wireless Connectivity | Wi-Fi 2.4 GHz and 5 GHz (dual-band support) |
| Ethernet Ports | 2 x 10/100/1000 Mbps Ethernet ports |
| Power Supply | PoE (Power over Ethernet), External Power Adapter (optional) |
| Number of Accounts | Up to 3 SIP accounts |
| HD Audio | HD voice technology, HD handset, HD speaker, and HD microphone |
| Audio Features | Full-duplex speakerphone, adjustable speaker volume |
| Caller ID | Yes |
| Call Features | Call Hold, Mute, Forward, Transfer, 3-way conferencing, etc. |
| USB Ports | 1 x USB port (for USB headset, Wi-Fi dongle, or USB recording) |
| Call History | Call History (received, missed, dialed) |
| Call Transfer | Blind transfer, Attended transfer, and Transfer to voicemail |
| Security | TLS, SRTP, HTTPS, SSH, OpenVPN, AES Encryption |
| Firmware Upgrade | Web-based management for easy firmware updates |
| Wall Mountable | Yes, the phone can be wall-mounted (wall mount kit sold separately) |
| Temperature Range | Operating: 0°C to 40°C (32°F to 104°F), Storage: -10°C to 50°C |
| Dimensions (LxWxH) | 187.5 x 174.5 x 144 mm (with stand) |
| Weight | 510g (with stand) |
| Environmental Certification | RoHS, CE, FCC, IC, and others |
| Feature | Details |
|---|---|
| Model | Yealink SIP-T31W |
| Series | T3 Series |
| Type | Wireless Desktop VoIP IP Phone |
| Display | 2.3-inch monochrome LCD display (132x64 pixels) |
| Audio Codecs | G.711, G.729, G.722, Opus, iLBC, AMR, and others |
| Wireless Connectivity | Wi-Fi 2.4 GHz and 5 GHz (dual-band support) |
| Ethernet Ports | 2 x 10/100/1000 Mbps Ethernet ports |
| Power Supply | PoE (Power over Ethernet), External Power Adapter (optional) |
| Number of Accounts | Up to 3 SIP accounts |
| HD Audio | HD voice technology, HD handset, HD speaker, and HD microphone |
| Audio Features | Full-duplex speakerphone, adjustable speaker volume |
| Caller ID | Yes |
| Call Features | Call Hold, Mute, Forward, Transfer, 3-way conferencing, etc. |
| USB Ports | 1 x USB port (for USB headset, Wi-Fi dongle, or USB recording) |
| Call History | Call History (received, missed, dialed) |
| Call Transfer | Blind transfer, Attended transfer, and Transfer to voicemail |
| Security | TLS, SRTP, HTTPS, SSH, OpenVPN, AES Encryption |
| Firmware Upgrade | Web-based management for easy firmware updates |
| Wall Mountable | Yes, the phone can be wall-mounted (wall mount kit sold separately) |
| Temperature Range | Operating: 0°C to 40°C (32°F to 104°F), Storage: -10°C to 50°C |
| Dimensions (LxWxH) | 187.5 x 174.5 x 144 mm (with stand) |
| Weight | 510g (with stand) |
| Environmental Certification | RoHS, CE, FCC, IC, and others |
