Yealink SIP-T53 IP phone Grey 8 lines LCD

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