(LAN) Local Area Network: A data communications network that links together computers and peripherals to serve users within a confined area.
Last-mile connection point: The "last mile" is often confused with the "first mile." It all depends on perspective! The last mile, from a provider's view, is the final connection point from their network to the end user. Conversely, the "first mile" is how the end user depicts the connection from their home or business to the provider's network.
The term "mile" should be used loosely. Last mile connections can be measured in yards to multiple miles.
(LATA) Local Access Transport Area: The area in which Regional Bell Operating Companies were allowed to provide local telephone and exchange access services as a result of the divestiture of AT&T in 1984.
Layer-1: In networking, the first phase of the communications protocol of the open system interconnection (OSI) model, also referred to as the physical layer, which provides the transmission of bits over the network medium.
Layer 2: The second layer of the open system interconnection (OSI) model that contains the physical address of a client or server station, also called the data link layer.
Layer 3: The third layer of the open system interconnection (OSI) model, which contains the logical address of a client or server station.
Layer 4: Also known as the transport layer, it is the layer of the open system interconnection (OSI) model which provides end-to-end management of the communications session.
Layer 5: The fifth layer of the open system interconnection (OSI) model that initiates and manages the communications session.
(LCD) Liquid Crystal Display: An electro-optical display technology that uses rod-shape molecules that flow like liquid and bend light.
(LDAP) Lightweight Directory Application Protocol: A protocol that is implemented in querying directory databases.
Leased Access: Commercial channels made available by a cable operator to third parties for a fee, as required by the Cable Acts of 1984 and 1992.
(LEC) Local Exchange Carrier: Any authorized carrier that has been given permission by the state PUC to provide local voice-level telecommunications services within a predetermined area
(LEOS) Low Earth Orbit Satellite: Satellites that orbit the earth at lower altitudes.
(LID) Line Information Database: These databases contain all valid telephone and calling card numbers, and when a user places a calling card call, these databases can provide validation.
(LMDS) Local Multipoint Distribution Service: A wireless cable system that enables greater upstream bandwidth than most other wireless services from a fixed station for entertainment
video and CLEC services.
(LNP) Local Number Portability: A feature that allows customers to maintain their present telephone numbers when they change carriers for incoming calls.
(LO) Local Origination Programming: Material developed by an individual cable television system specifically for the community it serves.
Local Loop: The wire that connects a home or business to a telephone company’s central office.
Local-To-Local: The retransmission by DBS of local TV signals back into their local broadcast markets.
Long Distance: A call in the public switched telephone network that goes beyond the local calling area.
Loop: A pair of wires that connects the central office to the telephone set. The telephone set is the location of the telephone.