Fax July 1996. A major breakthrough in the development of the modern facsimile system was the result of digital technology, where the analog signal from scanners was digitized and then compressed, resulting in the ability to transmit high rates of data across standard phone lines. The first digital fax machine was the Dacom Rapidfax first sold in late 1960s, which incorporated digital data compression technology developed by Lockheed for transmission of images from satellites. Group 3 and 4 faxes are digital formats, and take advantage of digital compression methods to greatly reduce transmission times. Fax Over IP (FoIP) can transmit and
Internet fax and because of this, has started to replace the traditional fax machine. Reception: A fax is sent via the Public Switched Telephone Network (PSTN) to the fax server, which receives the fax and converts it into PDF or TIFF format, according to the instructions of the user. The processed file is then transmitted to the Web server, which sends it as an email containing the fax as an attached file, and sometimes sends a message reporting delivery to a mobile phone. Sending: The user connects to the supplier Web site, specifies the receiving fax number, and uploads the document to