Canon imageCLASS D660 imageCLASS D680 Fax Guide - Page 3
Kbps modem speed. The Public Switched Telephone Network PSTN currently supports 28.8 Kbps
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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 time of approximately 3 seconds* per page which results in reduced telephone line charges. * Approximately 3 seconds per page fax transmission time based on ITU-T No. 1 Chart (Standard Mode) at 33.6 Kbps modem speed. The Public Switched Telephone Network (PSTN) currently supports 28.8 Kbps modem speeds or lower, depending on telephone line conditions. ii
![](/manual_guide/products/canon-imageclass-d660-imageclass-d680-fax-guide-caad66e/3.png)
ii
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
time of approximately 3 seconds* per page which results in reduced telephone line charges.
* Approximately 3 seconds per page fax transmission time based on ITU-T No. 1 Chart (Standard Mode) at
33.6 Kbps modem speed. The Public Switched Telephone Network (PSTN) currently supports 28.8 Kbps
modem speeds or lower, depending on telephone line conditions.