User Manual
Table Of Contents
- USER’S GUIDE MFC-7420/MFC-7820N
- APPROVAL INFORMATION
- Compilation and Publication Notice
- EC Declaration of Conformity
- Safety precautions
- Quick Reference Guide
- Table of Contents
- 1 Introduction
- 2 Getting started
- Initial setup
- General Setup
- Setting the Mode Timer
- Setting the Paper Type
- Setting the Paper Size
- Setting the Ring Volume
- Setting the Beeper Volume
- Setting the Speaker Volume
- Turning on Automatic Daylight Savings Time
- Toner Save
- Sleep Time
- Setting the LCD Contrast
- Security
- TX Lock (MFC-7420 only)
- Memory Security (MFC-7820N only)
- Setting Lock
- 3 Setup Send
- 4 Setup Receive
- 5 Quick-Dial numbers and dialling options
- 6 Remote Fax Options
- 7 Printing reports
- 8 Making copies
- 9 Software and Network Features
- 10 Important information
- 11 Troubleshooting and routine maintenance
- Appendix A
- Appendix B
- Glossary
- Specifications
- Index
- Remote Retrieval Access card
- brother UK/IRE/SAF
Chapter 1
1 - 13
About fax machines
Custom features
Do you have BT’s Call Minder on the
phone line?
If you have Call Minder on the phone line
where you will install your new machine,
there is a strong possibility that Call Minder
and the machine may conflict with each other
while receiving incoming calls.
Why should there be problems?
Since both the machine and Call Minder will
pick up the call, after the number of rings you
have set, each of them has the ability to keep
the other from receiving calls.
For example, if Call Minder is set to answer
after two rings and your machine is set to
answer after four, Call Minder will stop your
machine from receiving faxes.
If you set Call Minder and the Brother
machine to answer after the same number of
rings, there is no way of knowing which one
will answer first. It is important to remember
that neither Call Minder nor the machine can
pass the call back to the other after the call
has been answered.
How can you avoid possible
problems?
A very good way to avoid problems like the
one mentioned, is to get a second phone
number on your present phone line.
Many people with Call Minder choose an
alternative service, which is called “BT Call
Sign”, and they are very satisfied with it.
(See BT Call Sign on page A-1.)
Another way to avoid possible problems is to
replace Call Minder with an answering
machine. Your Brother machine is designed
to work with an answering machine or TAD
(telephone answering device).
(See Connecting an external telephone
answering device (TAD) on page A-4.)
Fax tones and handshake
When someone is sending a fax, the fax
machine sends fax calling tones (CNG
tones). These are quiet, intermittent beeps
every 4-seconds. You’ll hear them after you
dial and press Start and they will continue for
about 60 seconds after dialling. During that
time, the sending machine must begin the
“handshake” or connection with the receiving
machine.
Each time you use automatic procedures to
send a fax, you are sending CNG tones over
the phone line. You will soon learn to listen for
these quiet beeps each time you answer a
phone on your fax line, so you will know if you
are receiving a fax message.
The receiving fax responds with fax receiving
tones, which are loud, chirping sounds. A
receiving fax chirps for about 40 seconds
over the phone line, and the LCD shows
Receiving.
If your machine is set to the Fax Only mode,
it will answer every call automatically with fax
receiving tones. If the other person hangs up,
your machine will continue to send the
“chirps” for about 40 seconds, and the LCD
continues to show
Receiving. To cancel
receiving, press Stop/Exit.
The fax ‘handshake’ is the time in which the
sending machine’s CNG tones and the
receiving machine’s “chirps” overlap. This
must be for at least 2 to 4 seconds, so both
machines can understand how each is
sending and receiving the fax. The
handshake cannot begin until the call is
answered, and the CNG tones only last for
about 60 seconds after the number is dialled.
So it is important for the receiving machine to
answer the call in as few rings as possible.










