Glossary, Acronyms, and Abbreviations - IIUSA

m - meters
M
M-Frame - Basic frame structure in DS3 datastream. Every M-Frame
is divided into seven subframes of 680 timeslots. Each subframe
is then divided into eight blocks of 85 time slots, the first of which
is a control bit. The remaining bits are available for information
bits. The control bits include X-bits, F-bits, M-bits, P-bits, and Cbits.
The total number of time slots is 4760 with 4704 time slots
reserved for data.
M&FI - Maintenance and Fault Isolation
M/C - multichannel
M/S - maintenance/supervisor
M13 - Multiplexer for T1 to subrated asynchronous T3 datastreams.
MA - master
mA - milliamperes
MA - master
MAA - Metropolitan Area Acquisition (GSA/FTS)
MAC - mandatory access control
MAC - message authentication code
MAC - (Media Access Control) - MAC is a 6-byte hardware address
(set when manufactured) that is unique to each PSM.
MACA - multiple access collision avoidance (protocol)
MACCS - Marine air command and control system
MACG - marine air control group
MACSAT - multiple access commercial satellite
MAE - Metropolitan Area Exchanges (Internet)
MAFET - microwave and analog front end technology
MAGIC - multidimensional application and gigabit internetwork
consortium
MAGIIC - Mobile Ground Imagery Interpretation Center
MAGIS - Marine Air-Ground Intelligence System
MAGR - miniaturized airborne GPS receiver
MAGTF - Marine Air Ground Task Force
MAIS - major automated information systems
MAISRC - Major Automated Information Systems Review Council
MAJCOM - major command
MaJIWC - Maritime Joint Information Warfare Center
MALD - miniature air-launched decoy
MAMA - man-machine
MAMS - Military Airspace Management Systems
MAN - Metropolitan Area Network
man - manual
MANT - maintenance
MANTIS - manpack tactical intelligence system
MAP - manufacturing automation (applications) protocols
MAP-D - multi-application processor for DEFINITY
MAPI - messaging application programming interface
Mapping - In network operations, the logical association of one set
of values, such as addresses on one network, with quantities or
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values of another set, such as devices on another network (for
example, name-address mapping, internetwork-route mapping,
protocol-to-protocol mapping).
MAPSE - Minimal Ada Programming Support Environment
MARC - multitechnology automated reader card
MARCEMP - manual relay center modernization program
MARFOR - Marine Forces
MARFORPAC - MARFOR Pacific
MARIS - Maritime Information Systems Project
MARKS - The Modern Army Recordkeeping System
MARS - military affiliated (amateur) radio system
MARTI - microprocessor and radio telephone interconnection
MAS - multiple award schedule
MASC - Modeling, Analysis, and Simulation Center
MASINT - measurement and signature intelligence
MAST - Mobile Ashore Support Terminal
MAST CENT MAST central
MAST EUR MAST Europe
MAST PAC MAST Pacific
Master Clock - The source of time signals (or the signals
themselves) that all nodes use for synchronization.
Master/Slave Glare Resolution - Provides a single path of
continuity for data and signaling between end points in a glare
situation, where the node with the lower node number is termed
the "master" and its call goes through. The node with the higher
number is termed the "slave" and its call fails. The slave drops its
call and hooks up the incoming call in a glare situation, and the
master refuses the incoming call. Also see glare.
Matrix Switch - A device that allows a number of channels,
connected via serial interfaces (typically RS-232C), to connect,
under operator control, to designated remote or local analog
circuits, as well as to other serial interfaces.
MATT - multi-mission advanced tactical terminal
MATTS - Mobile Air Transportable Telecommunications System
MAU - media (medium) access unit
MAU - multistation access unit
MAWS - missile approach warning system
MAX - maximum
MAXI - Modular Architecture for the Exchange of Information
(Intelligence)
MB - megabyte
Mb - megabit
MBA - multibeam antenna
MBB - multiband beacon
MBC - memory bus controller
MBC - mortar ballistics computer
MBDL - missile battery data link
MBMR - multiband multimode radio
MBONE - multicast backbone
Mbps - megabits per second
MBps - megabytes per second
MBR - master boot record