M MAX_CID M MBSFNAreaRelatedCells M MGW M MME M ManagementScope M Mandatory M Marking M More M mandatory M mod M1 Module 1 M2 Module 2 M3 Module 3 MA Message Account MA Multi-Access MAA MBMS-Aware Application MAA Multimedia-Auth-Answer MAA Multimedia-Authentication-Answer MABR Modify Access Bearers Request MABR Multicast adaptive bit rate MAC Medium Acces Control MAC Medium Access Control MAC Message Authentication Code MAEC Metadata Assisted EVS Codec MAG Mobile Access Gateway MAG Mobile Anchor Gateway MAII Measurement assistance information indicator MAIO mobile allocation index offset MAP Mobile Application Part MAR Mobile Autonomous Reporting MAR Multi-Access Rules MAR Multimedia-Auth-Request MAR Multimedia-Authentication-Request MASC MIMO Average Spherical Coverage MASS Maritime Autonomous Surface Ships MAURI MAC address usage restriction indication MBA Management Based Activation MBMS Multimedia Broadcast Multicast Service MBNO Mobile Broadcast Network Operator MBNO Mobile Broadcast/Multicast Network Operator MBR Maximum Bit Rate MBS Maximum Burst Size MBS Metropolitan Beacon System MBS Metropolitan Beacon Systems MBS Mid Band Segment MBS Middle band segment MBSFN Multi-Broadcast Single Frequency Network MBT Minimum Buffer Time MC Mission Critical MC Multi Call MC Multi-call MCC Mobile Competence Centre MCC Mobile Country Code MCEF Memory Capacity Exceeded Flag MCI Malicious Call Identification MCI mass casualty incident MCL Maximum Coupling Loss MCL Minimum Coupling Loss MCL maximal coupling loss MCL maximum coupling loss MCM Multi-connection mode MCO Mobility Call Origination MCOT Maximum Channel Occupancy Time MCPTT Mission Critical Push To Talk MCPTT Mission Critical Push-To-Talk MCR Minimum Cell Rate MCS Mission Critical Services MD MBS decision MD mediation device MDA Multi-Dimensional Audio MDAS Management Data Analytics Service MDBV Maximum Data Burst Volume MDBVI Maximum data burst volume indicator MDCR Minimum Desired Cell Rate MDD Multi-Dimensional-Descriptor MDDUI Modem Detection During User Interaction MDN Mobile Directory Number MDR Miss detection rate MDSR Modified Dual Symbol Rate ME Managed Element ME Mobile Equipment MEA MCPTT emergency alert MEA MCVideo emergency alert MEC Mobile Edge Computing MEG MCPTT emergency group MEG Mean Effective Gain MEGC MCPTT emergency group call MEI Mobile Equipment Identifier MEI Mobile Equipment Identity MEL Multos Executable Language MEO Medium Earth Orbiting MEO Medium-Earth Orbit MEO Medium-Earth Orbiting MEPC MCPTT emergency private call MEPP MCPTT emergency private priority MES MCPTT emergency state MF Management Function MF Master File MF Multi-Frequency MFAF Messaging Framework Adaptor Function MFB Maximum Flow Bitrate MFBR Maximum Flow Bit Rate MFBRI Maximum flow bit rate indicator MFH Media Frame Handler MFS Multipath Fading Simulator MGC Media Gateway Controller MGCF Media Gateway Control Function MGCF Media Gateway Controller Function MGRP measurement gap repetition period MHA Minimum Handler Availability MI MIMO Indication MI Managed indicator MI Misleading Information MIB MASTER INFORMATION BLOCK MIB Management Information Base MIB Master Information Block MICO Mobile Initiated Connection Only MID Mobility Incall Delivery MIDP Mobile Information Device Profile MIHF Media Independent Handover Function MIL Maximum isotropic loss MIM Management Information Model MIM Multiple Interferers Margin MIM Multiple interference margin MIME Multipurpose Internet Mail Extensions MIMO Multiple Input Multiple Output MIS Management Information System MITM Man-In-The-Middle MK Master Key MKI Master Key Identifier MKI Master Key Index ML Machine Learning ML Maximum Likelihood MLB Mobility Load Balancing MLD Maximum Loudness Difference MLD Multicast Listener Discovery MLLW Mean Lower Low Water MLP Mobile Location Protocol MM Mobility Management MM media Messaging MMC Meet-Me Conference MMCC Multi-Media Call Control MME Mobile Management Entity MME Mobility Management Entity MMF mobility management function MMI Man Machine Interface MMI Man-Machine Interface MMM Multi Media Messaging MMS MM Messaging Services MMS Multimedia Message Service MMS Multimedia Messaging Service MMSE Minimum Mean Square Error MMSNA Multimedia Messaging Service Network Architecture MN Middle Node MNC Matra Nortel Communications MNC Mobile Network Code MNC Mobile Network Codes MNC Mobile network code MNM Machine Network Management MNO Mobile Network Operator MNO Mobile Network Operators MNP Mobile Number Portability MNRU Modulated Noise Reference Unit MNUA MWI Notifier User Agent MO Managed Object MO Management Object MO Management Objects MO Manegement Object MO Master Operator MO Mobile Originated MO Mobile Originating MO mobile originated MOC Managed Object Class MOCN Multi-Operator Core Network MOI Managed Object Instance MOMT Mobile Originated Mobile Terminated MONA Media Oriented Negotiation Acceleration MONP MCPTT Off-Network Protocol MOS Mean Opinion Score MOS Mean Opinion Scores MOTD Multilateration Observed Time Difference MP mobile profile MPAC Multi-Probe Anechoic Chamber MPC Media Preconfigured Channel MPCC Multi-Party Call Control MPD Media Presentation Description MPEA MCPTT private emergency alert MPEG Moving Picture Experts Group MPR Maximum Power Reduction MPS Multimedia Priority Service MPS Multimedia Priority Services MPU Mobility Pattern update MR Medium Range MR mixed reality MRB Media Resource Broker MRCP Maritime Radio Communication Plan MRF Media Resource Function MRFC Media Resource Function Controller MRFC Multimedia Resource Function Controller MRFP Media Resource Function Processor MRFP Media Resource Function Protocol MRFP Multimedia Resource Function Processor MRFP Multimedia Resource Function Processors MRO Mobility Robustness Optimisation MRO Mobility Robustness Optimization MRP Multiple Reuse Planning MRT Maximum ratio transmission MRW Move Receiving Window MS Media Server MS Mobile Service MS Mobile State MS Mobile Station MS Mobile Stations MS Modulation Scheme MS mobile station MS-BSS Mobile Station -Base Station System MS-SGSN Mobile Station -Serving GPRS Support Node MSAI MBS service area indication MSC Mobile Switching Centre MSC Modem Status Command MSC mobile switching centre MSC-BSS Mobile Switching Centre -Base Station system MSCML Media Server Control Markup Language MSD Maximum Sensitivity Degradation MSE Media Source Extensions MSE mobility state estimation MSI MCH scheduling information MSI maritime safety information MSIN Mobile Subscriber Identification Number MSK Master Session Key MSN Multiple Subscriber Number MSP Multiple Subscriber Profile MSR Multi-Standard Radio MSRD Mobile Station Receive Diversity MSRN Mobile Station Roaming Number MSRP Message Session Relay Protocol MSS MBS System Simulator MSS Mobile Satellite Service MSS Mobile Satellite Services MST Mobile Service Transport MSUA MWI Subscriber User Agent MSVQ multi-stage vector quantization MSW Maritime single window MT Maximum Throughput MT Mobile Terminal MT Mobile Terminated MT Mobile Terminating MT Mobile Termination MT Mobile-Termination MT Modem Type MT mobile terminated MT mobile terminating MT mobile-terminated MTA Multilateration Timing Advance MTAR Multiple terminal address registration MTBF Mean time between failures MTC Machine Type Communication MTC Machine-Type Communication MTC Machine-Type Communications MTC Machine-type-communication MTI Message type indicator MTLF Model Training Logical Function MTP Message Transfer Part MTP2 Message Transfer Part 2 MTP3 Message Transfer Part 3 MTRF Mobile Terminating Roaming Forwarding MTU Maximum Transfer Unit MTU Maximum transmission unit MU Mark up MU multi-user MUA Modify-Uecontext-Answer MUI Multiple UEs Indicator MUR Modify-Uecontext-Request MVC Multiview Video Coding MVNO mobile virtual network operator MW Messages-Waiting MWC Multi-Way Calling MWD Messages Waiting Data MWD Messages-Waiting-Data MWI Message Waiting Indication MWI Messages-Waiting-Indication MWT Max Wait Time MWUS MTC wake-up signal