How does a fax machine receive a document?
The system of coding and decoding of the data is the same in all the fax machines so that a message sent from one part of the world can be received at the other part of the world. When the signals (incoming) sent from a fax machine reach the telephone receiver of an-other fax machine, they are separated from the carrier wave and fed into the printer. The electrical signal tells where all the white, gray and black spots are on the original document and the printer recreates the document in horizontal chains of dots built up into lines.
