LAN (Local Area Network): A communications network that serves users within a confined geographical area like a building or a campus.
LCD (Liquid Crystal Display): LCD televisions use liquid crystals that act as shutters to produce a picture on a television screen.
Letterbox mode: A method of viewing a widescreen programme in full on a non-widescreen TV with a 4:3 ratio. This is achieved by adding black lines to the top and bottom of the picture. Programmes shot in the 16:9 widescreen format are often
Last Mile: The last non-fibre part of the connection between the operator’s central office and the customer. The last mile is made up of copper twisted pair, coaxial cable or wireless access.
Linear Channel: A broadcast service transmitting a regular schedule. Eg, BBC One, RTL4, CNN, Discovery Channel, etc
LMDS (Local Multipoint Distribution Service): A new, high-capacity, two-way, wireless, fixed voice and data communication service. It requires line of sight between the transmitter and receiving antenna that can be up 6 kilometres apart depending on weather conditions. LMDS offers a bandwidth of up to 1.5 Gbps downstream to users and 200 Mbps upstream from the user.
Local Loop: The lines between a customer and the NOC of the telephone or cable company.?