M
MAC
Media Access Control; the lower sublayer of the OSI system
MAN
Metropolitan Area Network
MAP
Mobile Application Part
Mbit/s
Megabit: a unit of data transmission speed equal to one million bits per second
MHz
Megahertz; a unit of frequency equal to one million Hertz
MCPA
Multi Carrier Power Amplifier
MeXe
Mobile Execution Environment; likely to be based on Java, MeXe enables WAP-enabled devices to offer a wider range of features with greater security and flexibility, as well as greater control of telephony features
MFSK
Multiple Frequency Shift Keying
MMI
Man Machine Interface
MMS
Multimedia Messaging Service; an evolution of SMS, MMS goes beyond text messaging offering various kinds of multimedia content including images, audio and video clips
MMSK
Modified Minimum Shift Keying
MNO
Mobile Network Operator
Modulation
The process of imposing an information signal on a carrier. This can be done by changing the amplitude (AM), the frequency (FM) or the phase, or any combination of these
MoU
Memorandum of Understanding-
see GSM MoU
MPEG
Motion Picture Experts Group; MPEG4 is a technology for compressing voice and video so that the information can be transmitted over normally difficult links such as mobile radio
MS
Mobile Station
MSC
Mobile Switching Centre; the switching centre of a mobile phone network, the MSC has interfaces to the BSCs, HLR, VLR and other MSCs
MSISDN
Mobile Station International ISDN Number
MSK
Minimum Shift Keying; Another term for FFSK
Multiplexing
A telecommunications technique where several channels can be combined to share the same transmission medium. The most common forms are Time Division Multiplexing (TDM) and Frequency Division Multiplexing (FDM)
MVPN
Mobile Virtual Private Network
