A technology that transforms a normal copper telephone line into a high-speed digital line. This technology gives you always-on access to telephone services and the Internet at the same time. An ADSL line has a higher downstream speed (into the end user) than upstream speed (away from the end user).
A technology that enables all types of information (data, voice and video in any combination) to be transported by a single network.
A very high speed 'always-on' service connection allowing large amounts of information to be conveyed quickly, such as data, graphics files or video.
A family of technologies generically referred to as DSL, or xDSL, capable of transforming ordinary phone lines into high-speed digital lines. This is used for services such as fast Internet access and video-on-demand. ADSL (Asymmetric DSL), HDSL (High data rate DSL) and VDSL (Very high data rate DSL) are all variants of xDSL.
Equipment at an exchange to operate DSL services.
The protocol used for routing and carriage of messages across the Internet.
A network, usually based on public telephone network, which provides digital links to customers at a maximum bandwidth of 128Kbit/s.
Companies which provide telecommunications services over fixed or mobile networks, or services with a telecommunication service component, to the public at large but do not own or operate telecommunications networks.
A network within a building that connects a group of computers, printers and servers, primarily for the sharing of resources and exchange of information (e.g. e-mail).
A fixed unswitched communication link between two points.
So called 3rd generation mobile communications system which will provide enhanced range of multimedia services (eg video, highspeed internet access).
The generic name for the transport of voice traffic using Internet Protocol (IP) technology. The VoIP traffic can be carried on a private managed network or the public Internet (see Internet telephony) or a combination of both.
