User's Manual

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● TCP — Transmission Control Protocol. A core protocol for transmitting and receiving information over
the Internet.
● TCP/IP — Transmission Control Protocol/Internet Protocol. The set of communications protocols used
for the Internet and other similar networks.
● Telnet — Telecommunication Network. A network protocol used on the Internet or on local area
networks.
● TFTP — Trivial File Transfer Protocol. A file transfer protocol with a subset of FTP functionality.
● UA — User Agent. Any device or software used to access a web page. A user agent might be a web
browser, a smart phone, or a screen reader.
● UDP — User Datagram Protocol. A simple transport protocol used to transfer information on the
Internet.
● UI — User Interface. The part of a software application or hardware device that a user sees and
interacts with.
● UMTS — Universal Mobile Telecommunications Service. A third-generation broadband, packet-based
transmission of text, digitized voice, video and multimedia at data rates up to 2 Mbps. UMTS offers
a consistent set of services to mobile users all over the world. UMTS is based on the GSM standard.
Until UMTS is fully implemented, users can use multi-mode devices that switch to currently available
technology.
● USB — Universal Serial Bus. A connection type for computing device peripherals such as a printer,
mobile modem, etc. USB connectors may be used for data transfer or charging.
● USB Port Types — The USB ports on computers and hubs have a rectangular Type A socket, and
peripheral devices have a cable with a Type A plug. Peripherals that do not have an attached cable
have a square Type B socket on the device and a separate cable with a Type A and Type B plug. Ports
and connectors are available in different sizes (for example, standard, mini, and micro).
● USSD — Unstructured Supplementary Service Data. A service found in HSPA/GSM networks that
allows the user to retrieve information or implement certain types of call services.
● VNC — Virtual Network Computing. A graphical desktop sharing system that uses the RFB protocol to
remotely control another computer.
● VPN — Virtual Private Network. A secure private network that runs over the public Internet.
Commonly used to connect to an office network from elsewhere.
● VPN Passthrough — A feature that allows a client to connect to a VPN server.
● WAN — Wide Area Network. A public network that extends beyond architectural, geographical, or
political boundaries (unlike a LAN, which is usually a private network located within a room, building,
or other limited area).
● WCDMA — Wideband Code-Division Multiple Access. A 3G mobile wireless technology that promises
much higher data speeds to mobile and portable wireless devices. Another name for UMTS.
● WEP — Wired Equivalent Privacy. An IEEE standard security protocol for 802.11 networks. Superseded
by WPA and WPA2.
● Wi-Fi (R) — Any system that uses the 802.11 standard developed and released in 1997 by the IEEE.