[comp.dcom.fax] Need any information about Fax technology

tsai@Veritas.COM (Cary Tsai) (06/15/91)

Hi there:
I (indeed my friend) look for any information about Fax technology.
For example, what is 'group 3' meant ? what is Fax's format ? How does
Fax machine talk with another Fax ? 
Is any book, magazine, or article I can access ?
Your information and help would be appreciated.