| Facsimile (fax) transmission involves machines designed to transmit graphical information via normal telephone lines. After a special fax number is dialed and the phone connection established, documents are fed through the machine, which takes approximately one to six minutes to scan and convert the information into electrical impulses. The impulses are carried across phone lines and a receiving machine changes the impulses back to text, making a copy, or facsimile, of the document in the sending machine. Particularly in time-sensitive business transactions, fax communication has become a popular alternative to express mail because it is faster and generally less expensive. |
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