A fax (short for facsimile and sometimes also called telecopying) is the telephonic transmission of scanned-in printed material (text or images), usually to a telephone number associated with a printer or other output device. The original document is scanned by a fax machine, which treats the contents (text or images) as a single fixed graphic image, converting it into a “bitmap”. This is a digital form, whereby the information is transmitted as electrical signals through the telephone system. The receiving fax machine reconverts the coded image and prints a paper copy of the document.
However, now the Public Internet provides a newer and cheaper way to send and receive faxes. Using the Internet rather than the public telephone network or phone system to the fax point to transport messages. These services also provide the ability to broadcast a single fax to multiple addresses.
Internet fax, e-fax, or online fax is the general term which refers to the use of the Internet for faxes
And does not necessarily require the use of a fax machine. The term “Internet fax” encompasses “web fax” and “email fax,” along with VoIP fax (referring to the use of Voice over Internet Protocol to send and or receive a fax).
However, Internet fax should not be confused with IP fax.
IP fax and IP address relay
IP fax is frequently confused with Internet fax, though IP fax transmits data over an office intranet from a networked multifunctional device to the IP address of another. Taking advantage of an established LAN/WAN infrastructure, IP fax reduces or eliminates costly connection and transmission fees.