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Line Identification Services (Caller ID)
Service allowing subscribers to view or block
the telephone numbers of callers.
MIDI
Musical Instrument Digital Interface. A file format
to save digitized musical instrumental data. The
original meaning of MIDI, or Music Instrument
Digital Interface is a protocol to exchange data
between a computer and electric instruments.
MMS (Multimedia Message Service)
A message service for the handset environment,
standardized by the WAP Forum and the 3rd
Generation Partnership
Program (3GPP). For phone users, MMS is
similar to Short Message Service (SMS)-it
provides automatic, immediatedelivery of
user-created content from phone to phone. The
message addressing used is primarily phone
numbers, thus the traffic goes from phone to
phone. MMS also provides support for e-mail
addressing, so that messages can also be sent
by email. In addition to the text content of SMS,
MMS messages can contain still images, voice
or audio clips, and later also video clips and
presentation information.
MP3
Moving Picture Experts Group Layer-3 Audio. A
file format to provide high-quality audio whose
quality is equal to that of CD. MP3 is a digital
audio standard developed by MPEG, or Moving
Picture Experts Group and is widely used for
digital audio files.
MPEG4
Motion Picture Experts Group 4. A digital video
standard developed by MPEG, or Moving
Picture Experts Group. MPEG4 compresses
video data so that a large video file can be
transmitted, and saved more easily. MPEG4 is
suitable especially for mobile environment.
Multimedia
Multimedia means media that include various
media data such as voice, character string,
image, and video data. Currently, the meaning
of multimedia includes services provided
through multimedia.