What is the meaning of internal fax Macao fax

Fax is the content of our usual speaking telephone into text and then the text into electrical signals, to the other side of the fax machine, and then into the text of a form. The main thing is that fax is convenient and intuitive. Internal fax is a fax between all departments within the system. For example, in a county below all levels of government between the fax belongs to the internal fax.