Title

Yealink T57W Téléphone VoIP

The sub-category of the product.

The colour e.g. red, blue, green, black, white.

What size the mounting head of the product is, to couple it with a camera.

The number of lines in the phone.

The product contains an answering machine where you can leave messages if the phone is unanswered/engaged (busy).

The name and/or number of the caller comes up on screen when they ring the phone. You also send your caller ID when you call someone else unless you choose to deactivate it.

The number of names/numbers that can be stored in the phonebook of a phone.

A full-duplex system allows communication in both directions, and unlike half-duplex, allows this to happen simultaneously.

The description of display that can includes display type, resolution, size etc.

Size of the display for this product, measured diagonally, usually in inches.

Resolution of the display for the system

A screen of a laptop, smartphone, etc., that responds to touch so you can control the interface using your fingers.

Camera at the front of the product.

Device has a microphone and loudspeaker provided separately from those in the handset. This device allows multiple persons to participate in a conversation. The loudspeaker broadcasts the voice or voices of those on the other end of the telephone line, while the microphone captures all voices of those using the speakerphone.

An Ethernet LAN (Local Area Network) interface is present, for a wired conection via a cable.

The characteristics of the Ethernet LAN interface.

Popular technology that allows an electronic device to exchange data or connect to the internet wirelessly using radio waves.

The type of wireless local area network (LAN): ad-hoc (where units in a network communicate peer-to-peer) or Infrastructure (units communicate with each other via an access point). A LAN interconnects computers in a small area e.g. home, school or office.

Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers, and a wide variety of handheld devices including mobile phones. Because it uses radio-wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for emails or news updates, for example.

Network protocols tested as compatible with this product

Security algorithms are used to provide authentication, cipher key generation, integrity and radio link privacy to users on mobile networks. The security algorithms supported are the ones that can be used with this product.

The way in which the network is working, e.g. IEEE 802.11a, IEEE 802.11b, IEEE 802.11g.

Number of USB 2.0 ports (connecting interfaces) in the device. USB 2.0 was released in April 2000 (now called "Hi-Speed"), adding higher maximum signaling rate of 480 Mbit/s (effective throughput up to 35 MB/s or 280 Mbit/s), USB 2.0 ports are usually black.

Number of Ethernet LAN (RJ-45) ports (connecting interfaces) in the device. Ethernet LAN (RJ-45) ports allow a computer to connect to the ethernet.

The socket/plug where the DC electricity supply connects to the device.

The device supports Power over Ethernet (PoE), which is one of several standardized or ad-hoc systems which pass electrical power along with data on Ethernet cabling. This allows a single cable to provide both data connection and electrical power to devices such as wireless access points or IP cameras.

The minimum and maximum temperatures at which the product can be safely operated.

The measurement or extent of something from side to side.

The distance from the front to the back of something.

Height of the product

Instructions, either online, as a computer program or in paper form, to allow you to set up and start using the product quickly.

The amount of handles, which are the part by which a thing is held, carried or controlled.