Canon imageRUNNER 2520, User Manual, Page: 21 / 582

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Super G3
Super G3 is a phrase used to describe the new generation of
fax machines that use ITU-T V.34 standard 33.6 Kbps*
modems. Super G3 High Speed Fax machines allow
transmission times of approximately 3 seconds* per page
which results in reduced telephone line charges.
* Approximately 3 seconds per page fax transmission time
based on CCITT/ITU-T No.1 Chart, (JBIG, Standard Mode) at
33.6 Kbps modem speed. The PSTN (Public Switched
Telephone Network) currently supports 28.8 Kbps modem
speeds or slower, depending on telephone line conditions.