（单词翻译:单击）
MAAP
maintenance & administration panels
MACSTAR
multiple access customer station rearrangement
MAC
media access control or moves, adds, and changes
Main Cross-Connects
In a premises1 distribution system, main cross-connects are the cross connects located in an equipment room.
MAN
metropolitan2 area network
MCU
mobile control unit
Media
See transmission medium; yielded media; unguided media.
Message Telecommunications Service (MTS)
MTS is a non-private-line intrastate and interstate long-distance that uses in whole or in part the public switched telephone network (PSTN).
MFJ
Modification of Final Judgment
MFOTS
Military Fiber-Optic Transmission System
MF
multiple frequency
MHS
message handling system
MIB
management information base
MIC
Material Identification Code
