Because it works over the phone line, and many people usually use it to double as a phone.
The telephone predated the fax machine by many decades.
Make sure that you have separate phone line for you fax machine and separate for your telephone. If not, even normal calls will make your fax machine rings.
fax machine ;)
Yes, most fax machines require a telephone line as well as a connection to the phone network to send and receive faxes. While there are some fax machines that can fax over an IP connection, this is still the standard method for connecting a fax machine.
Make sure that you have separate phone line for you fax machine and separate for your telephone. If not, even normal calls will make your fax machine rings.
Telecommunication over telephone networks.
computer
In general, you dial a fax number on a fax machine exactly the same way you would dial the same telephone number on an ordinary landline telephone at the same location.
A GSM fax is a fax machine (fascimile machine), which is a device that's used to send an image from one fax machine to another. A telephone is a device used to send an audio signal between one telephone and another.
There is appears to be no meaning to the term "fax diffain". If the question is about "fax definition", then the definition of fax is a machine that scans a document, transmits it over a telephone line where it is received by a fax machine on the other end to print a facsimile (copy) of the document out.
Fax machines are used to send paper documents to another fax machine user via a telephone line.
A fax machine is used to send documents instantly to another fax machine through a standard telephone line. Most fax machines can also be used to make copies of documents, and some can also be used as a computer printer and scanner.