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
Registered fax Registered fax The technical process called as a whole hereinafter "registered fax" (« fax recommandé » in French) consists in sending an electronic document by fax where both the content is certified and the delivery to the recipient is guaranteed. <br> It serves the purpose of creating legal evidence that unalterable information has been shared between the sender and the receiver of the registered fax. The functional principle is as follows: - After the document to be sent is converted into a multiple page image in fax format, this image is time stamped.<br> - A final page is added to