Acronym

Description

L

Radiance (or spectral radiance)

L&T

Line and Trunk

L5

Long haul coaxial carrier system

LA

Listed Address

LABS

LATA-wide Business Services

LAD

LATA Architecture Database

LADC

Local Area Data Channel

LADS

LATA Architecture Database System

LADS

Local Area Data Service

LADT

Local Area Data Transport

LALR

Lookahead LR (Left-to-Right, Rightmost)

LAMA

Local Automatic Message Accounting

LAN

Local Area Network

LAP

Link Access Procedure

LAPB

Link Access Protocol B (or Link Access Procedure for the B channel)

LAPD

Link Access Protocol D (or Link Access Procedure for the D channel)

LARC

Livermore Automatic Research Computer

LASS

Local Area Signaling Service

LATA

Local Access and Transport Area (regional calling area)

LaTS

Langley Research Center Telecommunications System

LAW

Legal Department

LBA

Linear Bounded Automaton

L-band

390 MHz to 1550 MHz

LBO

Line Build-Out network

LBR

Large Business Remote

LBS

Load Balance System

LC

Last Completed

LC

Loop Closure

L-carrier

A family of coaxial cable transmission systems

LCB

Line Control Block

LCC

Line Class Code

LCC

Link Control Card (Northern Telecom Inc.)

LCD

Liquid Crystal Display

LCDM

Logarithmic Companded Delta Modulation

LCDR

Local Call Detail Recording

LCE

Line Concentrating Equipment

LCGN

Logical Channel Group Number

LC-I

Line Concentrator-Identifier system

LCM

Line Concentrating Module

LCN

Logical Channel Number

LCN

Logical Channel Number

LCP

Life Cycle Plan

LCP

Linked Call Processing

LCR

Least Cost Routing

LCR

Line Concentration Ratio

LCR

Least Cost Routing

LDA

Local Distribution Area

LDIS

LEC Data Integration System

LDIT

Local Digit Interpreter Table

LDM

Limited Distance Modem

LDN

Listed Directory Number

LDN

Local Distribution Network

LDS

Labor Distribution (UTI)

LDS

Local Digital Switch(ing)

LDS

Logical Data Store (IS)

LDSU

Local Digital Service Unit

LDSU1

Local Digital Service Unit - Model 1

LDSU2

Local Digital Service Unit - Model 2

LDV

Local Distribution Vendor

LEAS

LATA Equal Access System

LEC

Local Exchange Carrier

LED

Light Emitting Diode

LEN

Line Equipment Number

LF

Line Feed

LF

Low Frequency (below 3 MHz)

LFU

Least Frequently Used

LG

Location Group

LG

Logic Ground

LGC

Line Group Controller

LGE

Line Group Equipment

LI

Line Interface

LIFO

Last In-First Out

LIM

Line Interface Module

LINC

Laboratory Instrument Computer

LISP

List Processing

LIT

Line Insulation Test

LIU

Link Interface Unit

LLC

Line Load Control

LLC

Logical Line Control

LLC

Lower Level Compatibility

LLF

Line Link Frame

LLL

Low Level Logic

LLN

Line Link Network

LM

Line Module

LMC

LAN Maintenance (or Management) Center

LMC

Line Module Controller

LME

Line Module Equipment

LMF

Language Media Format

LMI

Local Management Interface

LMOS

Loop Maintenance Operations System

LMU

Line Monitoring Unit

LMU

Line Monitoring Unit

LNA

Launch Numerical Aperture

LNA

Low Noise Amplifier

LNI

Line Interface (cabinet or frame)

LNNMS

LattisNet Network Management System

LO

Line Occupancy

LOA

Leave of Absence (HR)

LOB

Line of Business

Locap

Low-capacity, low-loss paired cable

LOD

Line Hunt Overflow to a Directory number

LOE

Level of Effort

LOE

Level of Effort

LOGUTIL

Output reporting system

LOI

Letter Of Intent

LOR

Line Hunt Overflow to a Route

LOS

Loss of Signal

LP

Linear Programming

LP

Local Processor

LP mode

Linearly Polarized mode

LPC

Linear Predictive Coding

LPCDF

Low Profile Conventional Distributing Frame

LPN

Local Packet Network

LQA

Link Quality Analysis

LRC

Local Record Cache

LRC

Longitudinal Redundancy Check(ing)

LRU

Least Recently Used

LRU

Line Replacement Unit

LS

Least Squares

LSA

Labor Surplus Area

LSB

Least significant bit (or byte)

LSBRS

Large Scale Business Recovery Services

LSC

Line Screening Code

LSD

Line Sharing Device

LSDU

Low Speed Data Unit

LSF

Line Switch Frame

LSI

Large Scale Integration (ed) (circuit)

LSI

Loop Start Incoming

LSO

Loop Start Outgoing

LSR

Loop Signaling Repeater

LSSGR

Local Switching System General Requirements

LSTTL

Low-Power Schottky Transistor-Transistor Logic

LSU

Lone Signal Unit

LT

Logic Theorist

LTC

Line Test Center

LTC

Line Trunk Controller

LTC

Local Test Cabinet

LTD

Local Telephone Division (UTI)

LTD

Local Test Desk

LTD

Long Term Disability (HR)

LTE

Lightwave Terminating Equipment

LTE

Line Terminating Equipment

LTF

Lightwave Terminating Frame (MX3C/FT3C)

LTMA

Lightwave Terminating Multiplex Assembly

LTOP

Lease to Ownership Plan

LTP

Line Test Position

LTP

Line Trunk Peripheral

LTP

Logical Test Port

LTPU

Logical Test Port Unit

LTRS

Letters shift

LTS

Loop Test Subsystem (or Loop Testing System)

LTTS

Line and Trunk Test Station

LTU

Line Terminating Unit

LTU

Line Test Unit

LTWS

Line and Trunk Work Station

LU

Line Unit

LU1

Line Unit 1

LU2

Line Unit 2

LU3

Line Unit 3

LWOP

Lease With Option To Purchase

LXN

Local Exchange Network