What is fax?

Here's some information about fax, formatted in Markdown:

A fax (short for facsimile), also known as telecopying or telefax (the latter shorthand for telefacsimile), is the telecommunication of scanned printed material (both text and images), normally to a telephone number connected to a printer or other output device. The original document is scanned with a fax machine, which processes the contents (text or images) as a single fixed graphic image, converting it into a bitmap, and then transmits it through the telephone system in the form of audio-frequency tones. The receiving fax machine interprets the tones and reconstructs the image, printing a paper copy.

Here are some important subjects related to fax:

• Fax Machine: The device used to send and receive fax transmissions. It scans documents, converts them into a transmittable format, and prints received faxes.

• Fax Protocol: The standard communication protocol used for fax transmissions, such as ITU-T Group 3 fax.

• Fax over IP (FoIP): A technology that allows fax transmissions to be sent over the internet protocol (IP) network rather than traditional telephone lines.

• Electronic Fax: Digital faxing, which uses a computer or mobile device to send and receive faxes. This often involves scanning documents and using an online fax service.