Yealink SIP-T53W IP phone Black 8 lines LCD Wi-Fi

Packet loss concealment (PLC): Yes | Speed dialling: Yes | Call forwarding: Yes | Microphone mute: Yes | Number of VoIP accounts: 12 | Supported network protocols: FTP/TFTP/HTTP/HTTPS | Caller ID: Yes | Ethernet LAN interface type: Gigabit Ethernet | Ethernet LAN: Yes | Call waiting: Yes | Automatic gain control: Yes | Redialing: Yes | Number of handles included: 1 pc(s) | Device lock: Yes | Phonebook capacity: 1000 entries | Voice codecs: G.729B | Voice codecs: OPUS | RJ-9 ports quantity: 2 | Voice codecs: G.726 | Width: 212 mm | Wall mountable: Yes | Call transfer: Yes | Depth: 210.6 mm | Call history: Yes | Short Message Service (SMS): Yes | Product type: IP mobile phone | Voice codecs: iLBC | Answering machine: Yes | Voice codecs: G.722 | Voice activity detection: Yes | Integrated voicemail: Yes | Lines quantity: 8 lines | Call park: Yes | Voice codecs: G.729A | Wi-Fi: Yes | Backlight display: Yes | Voice codecs: G.723.1 | Mounting: Desk/Wall | Touchscreen: No | Bluetooth version: 4.2 | Height: 174.5 mm | Handset type: Wired handset | Volume control: Buttons | Phonebook sharing: Yes | Conference call: Yes | Dual-Tone Multi-Frequency (DTMF) modes: In-band | Number of DECT wireless handsets: 4 | Speakerphone: Yes | Dual-Tone Multi-Frequency (DTMF) modes: SIP info | Call hold: Yes | Dual-Tone Multi-Frequency (DTMF) modes: Out-of band | Adaptive jitter buffers: Yes | Do not disturb function: Yes | Anonymous call: Yes | Comfort noise generation (CNG): Yes | Call pick up: Yes | Anonymous call rejection: Yes | DECT connectable: Yes | Number of programmable keys: 8 | Keypad illumination: Yes | Full duplex: Yes | Call return: Yes | Warnings: Follow instructions for correct installation and use. | Warnings: Do not open the appliance, risk of electric shock. | Networking standards: IEEE 802.1x | AC adapter input voltage: 100 - 240 V | Networking standards: IEEE 802.3af | Bluetooth: Yes | Display diagonal: 9.4 cm (3.7") | Networking standards: IEEE 802.1p | Cables included: LAN (RJ-45) | USB 2.0 ports quantity: 1 | Power consumption (typical): 2.3 W | AC adapter output voltage: 5 V | Storage temperature (T-T): -30 - 70 °C | Quality of Service (QoS) support: Yes | AC adapter output current: 1.2 A | Display resolution: 360 x 160 pixels | Security algorithms: SIPS | DC-in jack: Yes | Security algorithms: AES | Security algorithms: HTTPS | Wi-Fi standards: 802.11a | Display: LCD | Product colour: Grey | Operating temperature (T-T): 0 - 40 °C | Quick start guide: Yes | Wi-Fi standards: 802.11g | Wi-Fi standards: Wi-Fi 4 (802.11n) | Operating relative humidity (H-H): 10 - 95% | Ethernet LAN (RJ-45) ports: 2 | Front camera: No | Power over Ethernet (PoE): Yes