Group 3



protocol, compression
(G3) The CCITT fax protocol which uses data compression and allows a variety of file types (e.g. electronic mail, pictures, PostScript) to be transmitted over analogue telephone lines.
The Group 3 protocol was published by CCITT in 1993. Full details of the protocol are available from ITU-T.
See also Group 4.
(1998-10-03)

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  • 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)

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  • Group agglutinin

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  • Group-annuity

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