| Product type | IP Phone |
| Product colour | Grey |
| Handset type | Wired handset |
| Mounting | Desk/Wall |
| Dual-Tone Multi-Frequency (DTMF) modes | In-band, Out-of band, SIP info |
| Caller ID | Yes |
| Phonebook capacity | 1000 entries |
| Number of VoIP accounts | 16 |
| Answering machine | Yes |
| Call waiting | Yes |
| Speed dialling | Yes |
| Call hold | Yes |
| Call forwarding | Yes |
| Conference call | Yes |
| Redialing | Yes |
| Do not disturb function | Yes |
| Call park | Yes |
| Call pick up | Yes |
| Anonymous call | Yes |
| Anonymous call rejection | Yes |
| Full duplex | Yes |
| Short Message Service (SMS) | Yes |
| Call return | Yes |
| Call transfer | Yes |
| Message-waiting indicator (MWI) | Yes |
| Call history | Yes |
| Integrated voicemail | Yes |
| Volume control | Buttons |
| Touchscreen | Yes |
| Display | LCD |
| Display diagonal | 17.8 cm (7") |
| Display resolution | 800 x 480 pixels |
| Front camera | No |
| Speakerphone | Yes |
| Microphone mute | Yes |
| Voice codecs | G.722, G.723.1, G.726, G.729A, G.729B, iLBC |
| Voice activity detection | Yes |
| Adaptive jitter buffers | Yes |
| Automatic gain control | Yes |
| Comfort noise generation (CNG) | Yes |
| Anti-clipping (ACLP) | Yes |
| Packet loss concealment (PLC) | Yes |
| Ethernet LAN | Yes |
| Wi-Fi | Yes |
| Bluetooth | Yes |
| Ethernet LAN interface type | Gigabit Ethernet |
| Wi-Fi standards | 802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) |
| Supported network protocols | FTP/TFTP/HTTP/HTTPS |
| Quality of Service (QoS) support | Yes |
| Security algorithms | AES, HTTPS, MD5, SRTP |
| Networking standards | IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af |
| USB 2.0 ports quantity | 1 |
| Ethernet LAN (RJ-45) ports | 2 |
| RJ-9 ports quantity | 2 |
| DC-in jack | Yes |
| Power over Ethernet (PoE) | Yes |
| AC adapter input voltage | 100 - 240 V |
| AC adapter output voltage | 5 V |
| AC adapter output current | 2 A |
| Operating temperature (T-T) | 0 - 40 °C |
| Operating relative humidity (H-H) | 10 - 95% |
| Width | 259.4 mm |
| Depth | 220 mm |
| Height | 211 mm |
| Number of handles included | 1 pc(s) |
| Quick start guide | Yes |
| Cables included | LAN (RJ-45) |
| Description |
| Yealink SIP-T57W. Product type: IP Phone, Product colour: Grey, Handset type: Wired handset. Dual-Tone Multi-Frequency (DTMF) modes: In-band, Out-of band, SIP info. Phonebook capacity: 1000 entries. Volume control: Buttons. Display: LCD, Display diagonal: 17.8 cm (7"), Display resolution: 800 x 480 pixels |
