what does g3 mean on a fax
Best Answer: G3 is a transmission rate used by fax machines, which I believe runs at 33.6k bps. Not all Fax machines support the G3 standard. Your machine should negotiate the highest possible speed with a remote fax machine, but may have trouble. You could try setting your fax machine to a lower speed to send faxes with greater compatibility. G3 has nothing to do with data rate. It could be 9600 or 33.6k. Fax Group is an encoding format used for fax transmission. There are two types: Fax Group 3, also known as G3, and Fax Group 4, also known as G4. Fax Group 3 and 4 are two of the encoding formats for Tagged Image File Format ( TIFF ) files.