| Term | Description |
MAC | MAC - Media Access Control; the lower sublayer of the OSI system
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MAN | MAN - Metropolitan Area Network
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MAP | MAP - Mobile Application Part
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Mbit/s | Mbit/s - Megabit: a unit of data transmission speed equal to one million bits per second
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MCPA | MCPA - Multi Carrier Power Amplifier
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MeXe | 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
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MFSK | MFSK - Multiple Frequency Shift Keying
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MHz | MHz - Megahertz; a unit of frequency equal to one million Hertz
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MMI | MMI - Man Machine Interface
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MMS | MMS - Multimedia Messaging Service. A further extension of SMS and EMS. MMS is designed to make use of newer and quicker mobile transmission methods such as GPRS, HSCSD, EDGE and UMTS, involving the attachment of multimedia extensions to messages, such as video and sound.
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MMSK | MMSK - Modified Minimum Shift Keying
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MNO | MNO - Mobile Network Operator
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Modulation | 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
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MoU | MoU - Memorandum of Understanding - see GSM MoU
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MPEG | 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
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MS | MS - Mobile Station
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MSC | MSC - Mobile Switching Centre; the switching centre of a mobile phone network, the MSC has interfaces to the BSCs, HLR, VLR and other MSCs
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MSISDN | MSISDN - Mobile Station International ISDN Number
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MSK | MSK - Minimum Shift Keying; Another term for FFSK
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Multiplexing | 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)
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MVPN | MVPN - Mobile Virtual Private Network
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