Yealink SIP-T57W IP phone Grey LCD Wi-Fi

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