Glossary, Acronyms, and Abbreviations - IIUSA

Link Cost - See routing cost.
Link ID - Links are identified through the Operator Interface by
indicating the nodes connected by a link. For example, the link
between Nodes 5 and 7 is referred to as N5N7 or N7N5.
LINT - line interface number
LIP - large internet packet
LIPS - logistics information processing system
LIRCM - large (aircraft) infrared countermeasures
Listed Directory Number - See LDN
LITE - Lightweight Integrated Telecommunications Equipment
LITINT - literature intelligence
LIU - LAN interface unit
LIU - line interface unit
LIWA - land information warfare activity
LKG - Loop Key Generator
LKGI - loop key generator interfaces
LKM - local key manager
ll - numbers
LLC - logical link control
LLCSC - lower level computer software component
LLDT - load local descriptor table
LLLTV - low light level television
LLP - lower layer protocol
LM - loop modem
LMD - loop group multiplexer and demultiplexer
LMDS - Local Multi-point Distribution Service
LMF - language media format
LMI - (Local Management Interface) - A protocol used for controlling
the connection between the User and the Network.
LMR - land mobile radio
LMRDFS - lightweight man-transportable radio direction finding
system
LMS - lightweight modular shelter
LMSS - land mobile satellite system
LMST - lightweight multiband satellite terminal
LMSW - load machine status word
LMU - local management unit
LN - link node
LNA - local network attachment
LNA - low noise amplifier
LNE - Late Net Entry
LNO - Liaison Officer
LNP - Local Number Portability
LNS - leader node switch
LNX - flood search numbering plan prefix
LNX+XXXX - format for a MSE user's telephone number
LO - low
LOAC - Laws of Armed Conflict
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Load - Unit - A measure of the processing capability of each
processor (PPM and PLM) module.
LOC - lines of code
LOC - local
Local Access and Transport Area - See LATA.
Local Exchange Carrier - See LEC and CLEC.
Local Loop - A diagnostic technique that loops data out to local
cable and terminal equipment to isolate failures.
Local UI - A user Interface application resident on the same machine
as SSIMP-LR Main.
LOCE - Linked Operations Intelligence Capability-Europe
LOCIS - Library of Congress Information System
LOCK - logical coprocessor kernel
LOF - lowest operating frequency
log - logistics
LOGAIS - logistics automated information system
Logical Slots - A measure of the bandwidth amount required for the
operation of a specific module. Each shelf in a node can support a
specific number of logical slots.
LOI - loss-of-input
LOICE - Link Operations Intelligence Center-Europe
Long Distance - 1. If your local Telco is a former Bell Operating
Company then any call outside of your LATA or any Interstate call
is considered long distance and is handled by an IEC 2. If your
local phone company is an independent then only interstate and
inter-phone company calls are considered long distance. The
above is true regardless of whether you are referring to a
dedicated line or a dial up call 3. However, under the current state
of deregulation, toll calls within a LATA may now be covered by
the IEC, and in some cases RBOCs are being permitted to handle
InterLATA calls.
LOOP - MUX loop multiplexer
Loop - 1. A diagnostic technique that loops data out or in to the
equipment to isolate failures. 2. The telephone circuit from the CO
to the customer's premises. Generally refers to a copper cable
circuit.
Loop Qualification - Process of actually measuring the loss on a
prospective ISDN line to see if it can be used for ISDN service .
The actual loss on the line determines whether ISDN service can
be offered without a repeater. Generally ISDN is available up to
18,000 feet from the serving Central Office. It may not be
available within this range, or may be available further from the
CO. Only a loop qualification can tell for sure. Not all Telcos will
extend ISDN lines with Repeaters.
Loop Start Line - A plain old telephone line. The telephone terminal
signals the "off hook" condition by allowing DC current to flow.
See Ground Start Trunk. See also Glare.
Loop Start Trunk - A plain old telephone line connected to a PBX
switch. See Loop Start Line. The PBX signals the "off hook"
condition by allowing DC current to flow. Ground Start Trunks are
generally preferred for use on PBXs to prevent glare. See Ground
Start Trunk. See also Glare.
Loop Timing - Loop timing indicates that the transmit and receive
frame bits are synchronized. When the operator selects the Loop
Timing parameter, the voice card obtains it’s transmit and
receive clock from the incoming bit stream.
Loop-in - A transmission capability in which the received signal is
returned (looped in) to the network.
Loop-out - A transmission capability in which the received signal is
returned (looped out) to the physical interface. In the SDMS port 0
bundle context, the meaning of loop-out is straightforward. In the
subrate port context, it is confusing because DSMS ports have no