M (Mega) One Million (e.g., Mbps)
ma milliamp
MAC Media Access Control
MAC Moves, Adds, Changes
MAE Metropolitan Area Exchange
MAN Metropolitan Area Network
MAPI Messaging Applications Programming Interface (Microsft Corp.)
MAS Multiple Address System
MATV Metropolitan Antenna Television
MAU Multistation Access Unit
MB Megabyte (1,000,000 bytes)
MCA Micro Channel Architecture (IBM Corp.)
MCU Multipoint Control Unit
MD Mediation Device
MDF Main Distribution Frame
MDI Medium Dependent Interface
MDS Multipoint Distribution Service
MEO Middle-earth-orbit
MF Mediation Function
MES Master Earth Station
MF Medium Frequency (300 KHz to 3 MHz)
MHz megahertz (millions of cycles per second)
MIB Management Information Base
MIC Management Integration Consortium
MIF Management Information Format
MII Media Independent Interface
MIME Multipurpose Internet Mail Extensions
MIN Mobile Identification Number
MIPS Millions of Instructions Per Second
MIS Management Information Services
MISR Multiprotocol Integrated Switch-Routing
MJU Multipoint Junction Unit
MM Mobility Manager
MMDS Multichannel, Multipoint Distribution Service
MMITS Modular Multifunction Information Transfer System
MO Magneto-Optical Modem Modulation/demodulation
MOSPF Multicast Open Shortest Path First
MPEG Moving Pictures Experts Group
MPOA Multi-Protocol O ver ATM
MPPP Multilink Point to Point Protocol
MRI Magnetic Resonance Imaging
ms millisecond (thousandths of a second)
MS Mobile Station
MSC Mobile Switching Center
MSF Multiservice Switching Forum
MSN Microsoft Network
MSRN Mobile Station Roaming Number
MSS Mobile Satellite Service
MTA Message Transfer Agent
MTA Multimedia Terminal Adapter
MTBF Mean Time Between Failure
MTBSO Mean Time Between Service Outages
MTP Message Transfer Part
MTSO Mobile Telephone Switching Office
MTTR Mean Time To Restore
MVC Multicast Virtual Circuit
MVDS Microwave Video Distribution System
MVPRP Multi-Vendor Problem Resolution Process
mW milliwatt
