Glossary

M

MAN
Metropolitan area network (aka metro)
Margin management
Complementary to all other areas of revenue assurance, margin management entails the processing of usage records, billing, inventory and invoice data in order to identify revenue and cost opportunities.
Mbps
Megabits per second
MEF
Metro Ethernet Forum
Mesh network
A mesh network is a resilient, wide area network (WAN) topology in which devices are connected with many redundant interconnections between network nodes. In a true mesh topology, there are multiple paths connecting multiple sites where every node has a connection to every other node in the network. Switching between nodes in the event of local or regional failure provides for redundancy so that data can be transmitted/delivered with high reliability. If one node can no longer operate, the others can still communicate with each other, directly or through one or more intermediate nodes. In practice, carrier networks may use only a partial mesh network topology because cost considerations. For wireless communications such as cellular or Wifi, mesh networks take the form of multi-hop systems in which devices assist each other in transmitting packets through the network, especially in adverse conditions and over wide geographic areas. Some WAN architectures, such as the internet, employ mesh routing, creating a virtual global mesh network.   
MGIF
Mobile Games Interoperability Forum
MMOFPS
Massive multiplayer online first person shooter
MMORPG
Massively multiplayer online role-playing game is a genre of online computer role playing games in which a large number of players interact with one another in a virtual world.
MMOSG
Massively multiplayer online social gaming
MMPOG
Massively multiplayer online gaming
MMR
Meet-me room: a place within a co-location centre or carrier hotel where multiple telcos can physically connect to one another and exchange data without incurring local loop fees. Services provided include voice, data and IP circuits. To interconnect, companies order a patch to the MMR which is then implemented by the co-location service provider.
MMS
Multimedia messaging service
MNE
Multiple network environment
MNO
Mobile network operator
MNP
Mobile number portability
MOU
Minutes of use
MPD
Minutes per drop
MPEG
Moving Picture Experts Group
MPLS
Multi-protocol label switching: IETF standard that adds routing and priority to packets transmitted across IP, ATM and Frame Relay networks allowing low and predictable delay for time-critical traffic such as VoIP.
MPoP
Minimum point of presence
MSC
Mobile switching centre
MSO
Multi-system operator
MSPP
Multi-service provisioning platform
MTU
Multi-tenant unit
MUX
Multiplexer: equipment that allows two or more signals to pass over one communication circuit.
MVIC
MPLS VPN inter-provider connection
MVNO
Mobile virtual network operator