Group 4
<protocol, compression> (G4) The CCITT fax protocol which uses data
compression and allows a variety of file types (e-mail, pictures, PostScript,
etc.) to be transmitted over digital (ISDN) telephone lines.
The Group 4 protocol was published by CCITT in 1993. Full details of the
protocol are available from ITU-T.
See also Group 3.
(1998-09-10)
Nearby terms:
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Code Recording » group identifier » Group Separator
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