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10/5/2009
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Latency - See delay
The lawful interception of information transferred over telecommunications network has a role in helping law enforcement agencies to combat criminal activity. Lawful interception in each country is based on national legislation in that country. In Europe lawful interception standards are set by ETSI to facilitate the economic realisation of lawful interception that complies with the various national and international conventions and legislation.
Another name for a private line or private circuit, i.e. a circuit that is leased, or rented, from an operating company to provide facilities exclusive to that customer.
LEO computer
LEO was the first data processing computer, as distinct from those designed for codebreaking or scientific work, and was developed by J. Lyons, a British catering company best known at the time for its teashops. LEO (standing for Lyons Electronic Office) had its first run of the world's first business application, a bakery production valuation system, in November 1951. The system became a weekly processing job and Lyons soon moved on to other business applications. LEO was built by Lyons from developments at Cambridge University and a company called Leo Computers was formed. This first merged with English Electric in 1963 and ultimately led to the formation of ICL, a company that went through several changes of ownership before absorption by Fujitsu.
An operating system based on an open-source version of UNIX.
A network used over short distances to serve multiple data devices connected to it. It is typically used by one company to interconnect all its computing equipment in a single building, or maybe on a campus. Part or all of the LAN may use wirelss and be known as a wireless LAN (WLAN). Nowadays a LAN, particularly a WLAN, is common in a house as part of a home network. Although a variety of technologies have been deployed in LANs over the years the dominant technology is Ethernet. When connection is made to the outside world the connection beyond the LAN is referred to as a wide area network (WAN), or if limited to a city, a metrpolitan area network (MAN).
An older term once used in the UK for the copper pairs in the access network.
A location based service is an application that is dependent on a certain location. Two broad categories can be defined: the first is user-requested where the user is retrieving the position once and uses it on subsequent requests for location dependent information (such as "where am I?" and "where is the nearest...?"). The second is triggered information that relies on a condition set up in advance so that when fulfilled retrieves the position of a given device, such as passing between cells in a cellular network or where a call to an emergency service triggers an automatic location request from the mobile network. Aee An overview of location-based services. BT Technology Journal Vol 21 No 1.
LonWorks
See home networks.
Short for local loop, it is another name for local lines or the access network.
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