Samsung FX 505 manual Maintenance and Troubleshooting c o n t i n u ed, How a Fax Works

Maintenance and Troubleshooting c o n t i n u ed

How a Fax Works

Facsimile is a system of sending printed or other graphic information from one location to another by producing a copy or “facsimile” of that information at the remote location. A fax unit transmits audio tones over the same telephone lines you use for person-to-person conversation.

The facsimile process involves three basic steps :

1.Reading and converting the document into electronic signals (audio tones).

2.Sending, or transmitting, the signals through a telephone system to another fax unit.

3.Converting the received signals into a

“ f a c s i m i l e ” o f the	transmitted
document.

This is a simplified explanation of the actual facsimile process. Although all fax units operate by this same basic process, specific operating procedures differ from unit to unit.

About Facsimile Compatibility

The CCITT (Consultative Committee for International Telephone and Telegraph), which sets worldwide standards for data

communication, classifies facsimile devices into three groups. The grouping is based on how a fax unit sends information, in what form, and at which speed.

To simplify, you can think of fax units as being grouped by speed: Group 1 includes 6-minute units, Group 2 includes 3-minute units, and Group 3 includes sub-minute units. These speeds refer to the amount of time it takes a fax unit to send or receive a standard business letter over the telephone lines.

Your FX505 is compatible with CClTT G3 mode units.