Yealink SIP-T53 IP phone Grey 8 lines LCD

Networking standards: IEEE 802.1p | Networking standards: IEEE 802.1x | AC adapter input voltage: 100 - 240 V | Display diagonal: 9.4 cm (3.7") | Networking standards: IEEE 802.3af | DC-in jack: Yes | Bluetooth: No | Quick start guide: Yes | Security algorithms: AES | Product colour: Grey | Display resolution: 360 x 160 pixels | AC adapter output voltage: 5 V | AC adapter output current: 1.2 A | Wall mountable: Yes | Wi-Fi: No | Operating relative humidity (H-H): 10 - 95% | Voice codecs: G.729B | Voice codecs: OPUS | Voice codecs: G.729ab | Ethernet LAN (RJ-45) ports: 2 | Voice codecs: G.711u | Voice codecs: G.723.1 | Operating temperature (T-T): 0 - 40 °C | Supported network protocols: FTP/TFTP/HTTP/HTTPS | Front camera: No | Voice codecs: iLBC | Voice codecs: G.729A | Voice codecs: G.722 | Power over Ethernet (PoE): Yes | Voice codecs: G.711a | Voice codecs: G.726 | Display: LCD | Ethernet LAN: Yes | Touchscreen: No | Depth: 210.6 mm | Width: 212 mm | Security algorithms: SIPS | Height: 174.5 mm | Cables included: LAN (RJ-45) | Product type: IP Phone | Full duplex: Yes | Quality of Service (QoS) support: Yes | Mounting: Desk/Wall | Security algorithms: HTTPS | Stand included: Yes | USB 2.0 ports quantity: 1 | Power consumption (typical): 2.3 W | Ethernet LAN interface type: Gigabit Ethernet | Automatic gain control: Yes | Microphone mute: Yes | Integrated voicemail: Yes | Anonymous call rejection: Yes | Emergency call: Yes | Hot desking: Yes | Handset type: Wired handset | Number of programmable keys: 8 | Dual-Tone Multi-Frequency (DTMF) modes: Out-of band | Dual-Tone Multi-Frequency (DTMF) modes: In-band | Call park: Yes | Call transfer: Yes | Comfort noise generation (CNG): Yes | RJ-9 ports quantity: 2 | Number of VoIP accounts: 12 | Call return: Yes | Packet loss concealment (PLC): Yes | Adaptive jitter buffers: Yes | Call waiting: Yes | Call history: Yes | Phonebook sharing: Yes | Device lock: Yes | Anonymous call: Yes | Speed dialling: Yes | Number of handles included: 1 pc(s) | Power consumption (Power over Ethernet (PoE)): 3.1 W | Volume control: Buttons | Direct call: Yes | Answering machine: Yes | Phonebook capacity: 1000 entries | Dual-Tone Multi-Frequency (DTMF) modes: SIP info | Ethernet cable: Yes | Call pick up: Yes | Do not disturb function: Yes | Conference call: Yes | Lines quantity: 8 lines | Speakerphone: Yes | Short Message Service (SMS): Yes | Handset: Yes | Call hold: Yes | Redialing: Yes | Backlight display: Yes | Caller ID: Yes | Voice activity detection: Yes | Call forwarding: Yes