Maintenance and troubleshootina, Continued, How a fax works – Audiovox afx-35 User Manual

Page 31: About facsimile compatibility

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Maintenance and Troubleshootina

continued

5. If a ‘DOCUMENT JAM’ occurs, dampen the lint-

free cloth with water, and wipe the ADF rubber

and ADF roller clean as shown below.

N o t e : If you still have problems in feeding

documents automatically after cleaning the

rubber and the roller, you may have to
replace them. Contact your dealer.

6. Assemble the white roller in reverse order of

disassembling. Then close the cover.

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

the remote location. A fax unit transmits audio

ones over the same telephone lines you use for

conversation.

The facsimile process involves three basic steps:

1.

2.

Reading and converting the document into

electronic signals (audio tones).

Sending, or transmitting, the signals through a

telephone system, to another fax unit.

3. Converting the received signals into a “facsimile”

of 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

T h e CCITT ( C o n s u l t a t i v e C o m m i t t e e f o r

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 facsimile is compatible with CCITT G3 mode

units.

30

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