MA Multiple Access

MAN Metropolitan Area Network

MAP Mobile Application Part (CCITT nº 7, same as SSAM)

MAPI Messaging Application Programming Interface

MAPMSISDN MAP Mobile Station ISDN

MAQ Modulation d'Amplitude en Quadrature

MARECS Marine Communications Satellite

MBA Multi-Beam Antenna

MCC Mobile Country Code (Identificatif du pays du mobile)

MCPN Micro-Cellular Personal Network

MCPN Mobile Customer Premises Network

MDMG Modulation à Déplacement Minimal avec filtrage Gaussien

MDPQ Modulation par Déplacement de Phase en Quadrature

MDTR Mobile Digital Trunked Radio

MF Medium Frequency

MF Modulation de Fréquence

MF Multi Frequency / Multi-Fréquence

MHS Message Handling System (or services) (CCITT standard, X 400)

MIA Modulation d'Impulsions en Amplitude

MIC Modulation par Impulsions et Codage

MID Message IDentification

MID Modulation d'Impulsions en Durée

MID Multiplexing IDentification

MIL Modulation d'Impulsions en Largeur

MILNET Military Network

MIP Modulation d'Impulsions en Position

MM Mobility Management

MNC Mobile Number Code, Mobile Network Code (Identificatif de l'opérateur)

MNAP Management Network Access Point

MNN Main Network Node

MNP Microcom Network Protocol

MODEM Modulator - Demodulator / Modulateur - Démodulateur

MOTE MObile Termination

MOTIS Messagerie Oriented Text Interchange Standard (ISO equivalent of MHS, X 400)

MP Modem Prêt

MPOA Multi Protocol Over ATM

MPT Ministry of Post and Telecommunications

MS Mobile Station

MSC Mobile Switching Center (GSM) (same as CCM)

MSCU Mobile Switching Centre Control Unit

MSIN Mobile Station (or Subscriber) Identification Number / Numéro d'identification d'abonné mobile (10 chiffres)

MSISDN Mobile Station International ISDN

MSK Minimal Shift Keying

MSP Management Services Provider

MSRN Mobile Station Routing (or Roaming) Number (same as ASMI)

MSS MAN Switching System

MST Multi Service Terminal

MSU Message Signal Unit

MTP Message Transfer Part (CCITT nº 7, same as SSTM)

MTU Maximum Transmission Unit

MUX Multiplexer